• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A method for expanding an end of a pipe made of plastics having shape memory with the aid of an expander tool (1) having a tool head (2) comprising expansion means (3, 4) arranged to be insertable inside the end of the pipe. The method comprises steps of measuring the temperature of the pipe to be expanded, adjusting at least one of the expansion control parameters of the tool head (2) on the basis the measured temperature of the pipe, and expanding the end of the pipe utilizing the adjusted expansion control parameter of the tool head. The expander tool (1) comprises a temperature sensor (5) for measuring temperature of the pipe to be expanded and/or ambient temperature, and an electronic control unit (9) for adjusting at least one of the expansion control parameters of the tool head on the basis the measured temperature value.
    公开号:FI20175510A1
    申请号:FI20175510
    申请日:2017-06-05
    公开日:2018-12-06
    发明作者:Mika Savolainen；Jyri Laakso；Mika Uosukainen；Vesa Rotso
    申请人:Uponor Innovation Ab；
    IPC主号:
    专利说明:

    METHOD FOR EXPANDING AN END OF A PIPE AND EXPANDER TOOL
    FIELD OF THE INVENTION
    The present invention relates to a method for expanding an end of a pipe made of plastics having shape memory with the aid of an expander tool having a tool head comprising expansion means arranged to be insertable inside the end of the pipe. Further, the present invention relates to an expander tool.
    BACKGROUND OF THE INVENTION
    It is a known fact that pipes made of plastics having shape memory, such as pipes made of PE (polyethylene) , PEX (cross-linked polyethylene), PE-RT (Polethylene of Raised Temperature resistance), UHMWPE (Ultra-high-molecular-weight polyethylene) after being expanded have a shrinking speed which depends on the temperature of the pipe. In cold ambient temperature the temperature of the pipe is low and the shrinking speed is low whereby more force is needed to expand the pipe because the pipe is stiffer than in warm weather. When the ambient temperature is warm, the pipe is warm and less force is needed because the pipe is more elastic. In general, shape-memory polymers are polymeric smart materials that have the ability to return from a deformed state (temporary shape) to their original (permanent) shape. Despite of the ambient temperature, in usual installation conditions, the shape memory will return the part to the original shape. Heat or any other stimulus is not needed to cause the returning to the shape .
    In practice, the installer has needed to manually control the number of expansion cycles depending on the temperature of the environment. The problem is that the quality of the pipe joint (tightness) much depends on the skills of the installer. The installer may easily apply less or more expansion cycles than optimum in particular temperature conditions. US 9555577 discloses a device and procedure for expanding the end of a plastic pipe. The document discloses adjusting radial distance between spreading surfaces based on ambient temperature.
    OBJECTIVE OF THE INVENTION
    The objective of the invention is to alleviate the disadvantages mentioned above.
    In particular, it is an objective of the present invention to provide a method and expander tool which reduces the effect of varying skills of the installer on the quality of the pipe joint and thus improves the pipe joint quality. Further, the invention enables automatic adjustment of expansion control parameters in accordance with the temperature of the pipe to be expanded .
    SUMMARY OF THE INVENTION
    According to a first aspect, the present invention provides a method for expanding an end of a pipe made of plastics having shape memory with the aid of an expander tool having a tool head comprising expansion means arranged to be insertable inside the end of the pipe. According to the invention the method comprises steps of measuring the temperature of the pipe to be expanded; adjusting at least one of the expansion control parameters of the tool head on the basis the measured temperature of the pipe; and expanding the end of the pipe utilizing the adjusted expansion control parameter of the tool head.
    The technical effect of the invention is that temperature of the pipe to be expanded can optimally be taken into account in the expanding process as the shrinking speed of the expanded pipe depends on the temperature.
    In an embodiment of the method, the expansion control parameter to be adjusted is the number of expansion cycles, and/or the expansion time, and/or the dimension of the expansion diameter.
    In an embodiment of the method, the temperature of the pipe to be expanded is measured directly by contacting the pipe.
    In an embodiment of the method, the temperature of the pipe to be expanded is measured indirectly by measuring ambient temperature of a room wherein the pipe has been stored.
    In an embodiment of the method, the temperature of the pipe to be expanded is measured by a temperature sensor integrated in the tool head.
    In an embodiment of the method, the method comprises a step of recognizing the diameter of the pipe to be expanded and by adjusting the at least one of the expansion control parameters on the basis of the measured diameter of the pipe.
    In an embodiment of the method, the method comprises a step of heating the pipe by a heater included in the tool head.
    In an embodiment of the method, the method comprises a step of cooling the pipe by a cooler included in the tool head.
    In an embodiment of the method, the method comprises a step of manually adjusting the at least one of the expansion control parameters with an input device included in the expander tool.
    In an embodiment of the method, the method comprises a step of automatically adjusting the at least one of the expansion control parameters with an electronic control unit included in the expander tool.
    According to a second aspect, the present invention provides an expander tool for expanding an end of a pipe made of plastics having shape memory, the expander tool comprising a tool head which comprises expanding means arranged to be insertable inside the end of the pipe for expanding the end of the pipe. According to the invention the expander tool comprises a temperature sensor for measuring temperature of the pipe to be expanded and/or ambient temperature, and an electronic control unit for adjusting at least one of the expansion control parameters of the tool head on the basis the measured temperature value.
    In an embodiment of the expander tool, the electronic control unit is configured to adjust the expansion control parameter which is the number of expansion cycles and/or the expansion time and/or the dimension of the expansion diameter.
    In an embodiment of the expander tool, the temperature sensor is arranged to measure the temperature of the pipe to be expanded directly by making contact to the pipe .
    In an embodiment of the expander tool, the temperature sensor is arranged to measure the temperature of the pipe to be expanded indirectly by measuring ambient temperature of the room wherein the pipe has been stored.
    In an embodiment of the expander tool, the expander tool comprises a set of interchangeable and detachably attachable tool heads for different pipe diameters, and that each tool head comprises a temperature sensor .
    In an embodiment of the expander tool, the electronic control unit is arranged in the tool head.
    In an embodiment of the expander tool, the expander tool comprises an expander tool frame and the tool head comprises a head frame which is detachably attachable to the expander tool frame
    In an embodiment of the expander tool, the temperature sensor is arranged in the tool head.
    In an embodiment of the expander tool, the electronic control unit is arranged inside the expander tool frame
    In an embodiment of the expander tool, the tool head which is configured for expansion of a predetermined pipe diameter comprises an electronic identification means to identify said predetermined pipe dimension, and that the electronic control unit located in the expander tool is arranged to recognize the electronic identification means and adjust the at least one of the expansion parameters on the basis of the identified pipe dimension.
    In an embodiment of the expander tool, the expander tool comprises a heater and/or a cooler for heating and/or cooling the pipe to be expanded.
    In an embodiment of the expander tool, the heater and/or the cooler is arranged in the tool head.
    In an embodiment of the expander tool, the expander tool comprises an input device for manually adjusting the at least one of the expansion control parameters.
    In an embodiment of the expander tool, the tool head comprises a plurality of spreading elements forming said expanding means, the spreading elements being radially movable in relation to a center longitudinal axis of the tool head between a starting position, at which the spreading elements are close along said axis and are insertable into the end of the pipe, to an outwardly extended expansion position radially distanced from said axis so as to expand the end of the pipe, each of the spreading elements having an outer spreading surface configured to press against an interior surface of the end of the pipe.
    In an embodiment of the expander tool, the expander tool comprises a piston configured to spread the spreading elements from the starting position to the expansion position by moving along said axis from a retracted piston position to a fully extended piston position against interior surfaces of the spreading elements, and an actuator for moving the piston.
    In an embodiment of the expander tool, the temperature sensor is arranged to the spreading element to measure the temperature by making contact to the pipe.
    In an embodiment of the expander tool, the tool head comprises - a gripping member insertable into the pipe at a distance from the end of the pipe, the gripping member being transformable between a release position allowing its insertion into the pipe and a pressing position wherein the gripping member exerts a pressing force to the inner surface of pipe to hold the pipe firmly in relation to the tool head, a pull rod which is axially movable for transforming the gripping member between the release position and the pressing position, and a mandrel sleeve having a conical outer surface forming said expansion means, the mandrel sleeve being axially movable between a retracted position wherein the mandrel sleeve is at position out from the position of the end of the pipe, and an expansion position wherein the mandrel sleeve is pushed into the end of the pipe for expanding the end of the pipe .
    In an embodiment of the expander tool, the tool head comprises a holding sleeve having an inner channel to receive the pipe for holding the pipe stationary against the pushing force of the mandrel sleeve during expansion of the end of the pipe from outside of the pipe .
    In an embodiment of the expander tool, the holding sleeve comprising mutually openable and closable holding sleeve parts to enable closing of the holding sleeve to a closed position around the tube for the expanding operation of the end of the tube, and for opening of the holding sleeve to an opened position for releasing the expanded end of the pipe.
    In an embodiment of the expander tool, the holding sleeve comprises a first holding sleeve part and a second holding sleeve part, and a lock device for locking the calibration sleeve parts in a closed position .
    In an embodiment of the expander tool, the first holding sleeve part comprises a first pivot arm which is pivoted to be turnable about a pivot hinge axle, and the second holding sleeve part comprises a second pivot arm which is pivoted to be turnable about the same pivot hinge axle as the first pivot arm.
    In an embodiment of the expander tool, the temperature sensor is arranged to the gripping member and/or to the mandrel sleeve and/or to the holding sleeve.
    It is to be understood that the aspects and embodiments of the invention described above may be used in any combination with each other. Several of the aspects and embodiments may be combined together to form a further embodiment of the invention.
    BRIEF DESCRIPTION OF THE DRAWINGS
    The accompanying drawings, which are included to provide a further understanding of the invention and constitute a part of this specification, illustrate embodiments of the invention and together with the description help to explain the principles of the invention. In the drawings:
    Figure 1 is an axonometric view of a first embodiment of the expander tool according to the invention, the tool head being at a starting position,
    Figure 2 is a partial cross-section of the expander tool of Figure 1,
    Figure 3 shows the expander tool of Figure 1 in an expansion position,
    Figure 4 is a partial cross-section of the expander tool of Figure 3,
    Figure 5 is an axonometric view of a second embodiment of the expander tool according to the invention, the holding sleeve being in an opened position,
    Figure 6 shows the expander tool of Figure 5 the holding sleeve being in a closed position,
    Figure 7 is a longitudinal cross-section of the expander tool of Figure 6 without a pipe,
    Figure 8 is the expander tool of Figure 7 with a pipe with a compression ring being inserted,
    Figure 9 shows the expander tool of Figure 7 without a pipe the gripping member being in pressing position and the mandrel sleeve being moved to the expansion position,
    Figure 10 shows the expander tool of Figure 7 with the pipe and the compression ring.
    DETAILED DESCRIPTION OF THE INVENTION
    Figures 1-4 show an expander tool 1 for expanding an end of a pipe made of plastics having shape memory. The expander tool 1 is designed and especially suitable to expand the end of the pipes used in plumbing applications. Such pipes include pipes having shape memory capacity, such as pipes made of PE (polyethylene) , PEX (cross-linked polyethylene), PE-RT (Polyethylene of Raised Temperature resistance), UHMWPE (Ultra-high-molecular-weight polyethylene) which, after being expanded, have a shrinking speed which depends on the temperature of the pipe. The expander tool 1 can also be used to expand SACP (Seamless alu- minium composite pipe) although it does not have the shape memory capacity. SACP pipe is built up from two concentric plastic layers with an intermediate seamless layer of aluminum and all these three layers are attached to each other by adhesive layers. The tool device is also suitable for expanding the ends of metal pipes, such as copper pipes. The expander tool 1 is preferably a handheld power tool having a handle H by which the operator can hold the expander tool by hand to perform the expansion operation.
    Further referring to Figures 1 to 4, the expander tool comprises a tool head 2 which comprises expanding means 3 arranged to be insertable inside the end of the pipe for expanding the end of the pipe. The expanding means 3 is formed of six spreading elements 13. The spreading elements 13 are radially movable in relation to a center longitudinal axis x of the tool head 2 between a starting position I (Figures 1 and 2) at which the spreading elements 13 are close along said axis x and are insertable into the end of the pipe, to an outwardly extended expansion position II (Figures 3 and 4) radially distanced from said axis x so as to expand the end of the pipe. Each of the spreading elements 13 have an outer spreading surface 14 configured to press against an interior surface of the end of the pipe. The expander tool 1 further comprises a piston 15 configured to spread the spreading elements 13 from the starting position I to the expansion position II by moving along said axis x from a retracted piston position III to a fully extended piston position IV against interior surfaces of the spreading elements 13, and an actuator 16 for moving the piston 15. The actuator 16 can be for example a hydraulic cylinder whereby the handle may contain equipment such as a rechargeable battery, a hydraulic pump to produce hydraulic pressure for the hydraulic cylinder, an electric motor for driving the hydraulic pump and an on-off switch, which can be operated by the operator to control the operation of the tool.
    The expander tool 1 comprises an expander tool frame 10 and the tool head 2 comprises a head frame 11 which is detachably attachable to the expander tool frame 10.
    The expander tool 1 preferably comprises a set of interchangeable and detachably attachable tool heads 2 for different pipe diameters. The expander tool 1 comprises a temperature sensor 5 for measuring temperature of the pipe to be expanded and/or ambient temperature. The temperature sensor 5 may be arranged in the tool head 2. When the expander tool 1 comprises a set of interchangeable and detachably attachable tool heads 2 for different pipe diameters, then each tool head 2 comprises a temperature sensor 5.
    In the embodiment shown in Figures 1 to 4 the temperature sensor 5 is arranged to one or more spreading elements 13 to measure the temperature by making contact to the pipe. The temperature sensor 5 may also be arranged to measure the temperature of the pipe to be expanded indirectly by measuring ambient temperature of the room wherein the pipe has been stored. Referring to Figures 2 and 4, an electronic control unit 9 is arranged for adjusting at least one of the expansion control parameters of the tool head on the basis the measured temperature value. The expansion control parameter to be adjusted may be number of expansion cycles, and/or expansion time, and/or dimension of the expansion diameter. The electronic control unit 9 may be arranged inside an expander tool frame 10, as in Figures 2 and 4, or the electronic control unit 9 may be arranged in the tool head 2. The electronic control unit 9 is configured to adjust the expansion control parameter which is the number of expansion cycles and/or the expansion time and/or the dimension of the expansion diameter.
    The tool head 2 which is configured for expansion of a predetermined pipe diameter comprises an electronic identification means 12 (see Figure 2) to identify the predetermined pipe dimension. The electronic control unit 9 located in the expander tool 1 is arranged to recognize the electronic identification means 12 and adjust the at least one of the expansion parameters on the basis of the identified pipe dimension.
    As schematically illustrated in Figure 2, the expander tool 1 may also comprise a heater 6 and/or a cooler 7 for heating and/or cooling the pipe to be expanded. The heater 6 and/or the cooler 7 may be arranged in the tool head 2. The expander tool 1 may further comprise an input device 8 for manually adjusting the at least one of the expansion control parameters.
    Figures 5 to 10 show another embodiment of the tool head 2. The tool head 2 comprises a gripping member 17 which can be inserted into the pipe at a distance from the end of the pipe as shown in Figure 8. The gripping member 17 is transformable between a release position V shown in Figures 5, 7 and 8 and a pressing position VI shown in Figures 9 and 10. The release position V allows insertion of the gripping member 17 into the pipe. In the pressing position VI the gripping member 17 exerts a pressing force to the inner surface of pipe to hold the pipe firmly in relation to the tool head 2. The tool head 2 further comprises a pull rod 18 which is axially movable for transforming the gripping member 17 between the release position V and the pressing position VI. Further, the tool head 2 com- prises a mandrel sleeve 19. The mandrel sleeve 19 has a conical outer surface 20 forming the expansion means 4. The mandrel sleeve 19 is axially movable between a retracted position VII shown in Figures 5, 7 and 8 and an expansion position VIII shown in Figure 9 and 10. In the retracted position VIII the mandrel sleeve 19 is at a position out from the position of the end of the pipe. In the expansion position VIII the mandrel sleeve 19 is pushed into the end of the pipe for expanding the end of the pipe.
    As best seen in Figures 5 and 6, the tool head 2 comprises a holding sleeve 21 having an inner channel 22 to receive the pipe for holding the pipe stationary against the pushing force of the mandrel sleeve 19 during expansion of the end of the pipe from outside of the pipe. The holding sleeve 21 comprising mutually openable and closable holding sleeve parts 21-1, 21-2 to enable closing of the holding sleeve 21 to a closed position IX shown in Figure 6 (and also in Figures 7 to 10) around the tube for the expanding operation of the end of the tube, and for opening of the holding sleeve 21 to an opened position X shown in Figure 5 for releasing the expanded end of the pipe. The holding sleeve 21 comprises a first holding sleeve part 21-1 and a second holding sleeve part 21-2, and a lock device 23 for locking the calibration sleeve parts in a closed position. The first holding sleeve part 21-1 comprises a first pivot arm 24 which is pivoted to be turnable about a pivot hinge axle 25. The second holding sleeve part 21-2 comprises a second pivot arm 26 which is pivoted to be turnable about the same pivot hinge axle 25 as the first pivot arm.
    Figure 10 schematically illustrates that the temperature sensor 5 may be arranged to the gripping member ΎΊ and/or to the mandrel sleeve 19 and/or to the holding sleeve 21.
    The expander tools shown in Figures 1-10 may be operated so that the temperature of the pipe to be expanded is measured with the temperature sensor 5. At least one of expansion control parameters of the tool head 2 is adjusted on the basis the measured temperature of the pipe. The end of the pipe is expanded by the tool head utilizing the adjusted expansion control parameter of the tool head. The expansion control parameter to be adjusted is number of expansion cycles, and/or expansion time, and/or dimension of the expansion diameter. The temperature of the pipe to be expanded is measured directly by contacting the pipe. Alternatively or additionally, the temperature of the pipe to be expanded may be measured indirectly by measuring ambient temperature of a room wherein the pipe has been stored. The temperature of the pipe to be expanded is measured by a temperature sensor 5 integrated in the tool head 2. The diameter of the pipe to be expanded may be recognized and the at least one of the expansion control parameters may be adjusted on the basis of the measured diameter of the pipe. The pipe may be heated by a heater 6 included in the tool head 2. The pipe may be cooled by a cooler 7 included in the tool head 2. The at least one of the expansion control parameters may be adjusted with an input device 8 included in the expander tool 1. The at least one of the expansion control parameters may be automatically adjusted with the electronic control unit 9 included in the expander tool 1.
    Although the invention has been the described in conjunction with a certain type of expander tool, it should be understood that the invention is not limited to any certain type of expander tool. While the pre sent inventions have been described in connection with a number of exemplary embodiments, and implementations, the present inventions are not so limited, but rather cover various modifications, and equivalent arrangements, which fall within the purview of prospective claims.
    权利要求:
    Claims (32)
    [1] 1. A method for expanding an end of a pipe made of plastics having shape memory with the aid of an expander tool (1) having a tool head (2) comprising expansion means (3, 4) arranged to be insertable inside the end of the pipe, characterized in that the method comprises steps of - measuring the temperature of the pipe to be expanded, adjusting at least one of the expansion control parameters of the tool head (2) on the basis the measured temperature of the pipe, and - expanding the end of the pipe utilizing the adjusted expansion control parameter of the tool head.
    [2] 2. A method according to claim 1, characterized in that the expansion control parameter to be adjusted is - number of expansion cycles, and/or - expansion time, and/or - dimension of the expansion diameter.
    [3] 3. A method according to claim 1 or 2, characterized in that the temperature of the pipe to be expanded is measured directly by contacting the pipe.
    [4] 4. A method according to any one of the claims 1 to 3, characterized in that the temperature of the pipe to be expanded is measured indirectly by measuring ambient temperature of a room wherein the pipe has been stored.
    [5] 5. A method according to any one of the claims 1 to 4, characterized in that the temperature of the pipe to be expanded is measured by a temperature sensor (5) integrated in the tool head (2).
    [6] 6. A method according to any one of the claims 1 to 5, characterized in that the method comprises a step of recognizing the diameter of the pipe to be expanded and by adjusting the at least one of the expansion control parameters on the basis of the measured diameter of the pipe.
    [7] 7. A method according to any one of the claims 1 to 6, characterized in that the method comprises a step of heating the pipe by a heater (6) included in the tool head (2).
    [8] 8. A method according to any one of the claims 1 to 7, characterized in that the method comprises a step of cooling the pipe by a cooler (7) included in the tool head (2).
    [9] 9. A method according to any one of the claims 1 to 8, characterized in that the method comprises a step of manually adjusting the at least one of the expansion control parameters with an input device (8) included in the expander tool (1).
    [10] 10. A method according to any one of the claims 1 to 9, characterized in that the method comprises a step of automatically adjusting the at least one of the expansion control parameters with an electronic control unit (9) included in the expander tool (1).
    [11] 11. An expander tool (1) for expanding an end of a pipe made of plastics having shape memory, the expander tool comprising a tool head (2) which comprises expanding means (3, 4) arranged to be insertable inside the end of the pipe for expanding the end of the pipe, characterized in that the expander tool (1) comprises - a temperature sensor (5) for measuring temperature of the pipe to be expanded and/or ambient temperature, and - an electronic control unit (9) for adjusting at least one of the expansion control parameters of the tool head on the basis the measured temperature value .
    [12] 12. An expander tool according to claim 11, characterized in that the electronic control unit (9) is configured to adjust the expansion control parameter which is the number of expansion cycles and/or the expansion time and/or the dimension of the expansion diameter.
    [13] 13. An expander tool according to claim 11 or 12, characterized in that the temperature sensor (5) is arranged to measure the temperature of the pipe to be expanded directly by making contact to the pipe.
    [14] 14. An expander tool according to any one of claims 11 to 13, characterized in that the temperature sensor (5) is arranged to measure the temperature of the pipe to be expanded indirectly by measuring ambient temperature of the room wherein the pipe has been stored.
    [15] 15. An expander tool according to any one of the claims 11 to 14, characterized in that the expander tool (1) comprises a set of interchangeable and detachably attachable tool heads (2) for different pipe diameters, and that each tool head (2) comprises a temperature sensor (5).
    [16] 16. An expander tool according to any one of claims 11 to 15, characterized in that the electronic control unit (9) is arranged in the tool head (2).
    [17] 17. An expander tool according to any one of claims 11 to 16, characterized in that the expander tool (1) comprises an expander tool frame (10) and the tool head (2) comprises a head frame (11) which is detachably attachable to the expander tool frame (10)
    [18] 18. An expander tool according to any one of claims 11 to 17, characterized in that the temperature sensor (5) is arranged in the tool head (2).
    [19] 19. An expander tool according to any one of claims 11 to 18, characterized in that the electronic control unit (9) is arranged inside the expander tool frame (10)
    [20] 20. An expander tool according to any one of claims 11 to 19, characterized in that the tool head (2) which is configured for expansion of a predetermined pipe diameter comprises an electronic identification means (12) to identify said predetermined pipe dimension, and that the electronic control unit (9) located in the expander tool (1) is arranged to recognize the electronic identification means and adjust the at least one of the expansion parameters on the basis of the identified pipe dimension.
    [21] 21. An expander tool according to any one of claims 11 to 20, characterized in that the expander tool (1) comprises a heater (6) and/or a cooler (7) for heating and/or cooling the pipe to be expanded.
    [22] 22. An expander tool according to 21, characterized in that the heater (6) and/or the cooler (7) is arranged in the tool head (2).
    [23] 23. An expander tool according to any one of claims 11 to 22, characterized in that the expander tool (1) comprises an input device (8) for manually adjusting the at least one of the expansion control parameters .
    [24] 24. An expander tool according to any one of claims 11 to 23, characterized in that the tool head (2) comprises a plurality of spreading elements (13) forming said expanding means (3) , the spreading elements (13) being radially movable in relation to a center longitudinal axis (x) of the tool head (2) between a starting position (I), at which the spreading elements (13) are close along said axis (x) and are insertable into the end of the pipe, to an outwardly extended expansion position (II) radially distanced from said axis (x) so as to expand the end of the pipe, each of the spreading elements (13) having an outer spreading surface (14) configured to press against an interior surface of the end of the pipe.
    [25] 25. An expander tool according to claim 24, characterized in that the expander tool (1) comprises a piston (15) configured to spread the spreading elements (13) from the starting position (I) to the expansion position (II) by moving along said axis (x) from a retracted piston position (III) to a fully extended piston position (IV) against interior surfaces of the spreading elements (13), and an actuator (16) for moving the piston (15).
    [26] 26. An expander tool according to claim 24 or 25, characterized in that the temperature sensor (5) is arranged to the spreading element (13) to measure the temperature by mak§ing contact to the pipe.
    [27] 27. An expander tool according to any one of claims 11 to 23, characterized in that the tool head (2) comprises - a gripping member (17) insertable into the pipe at a distance from the end of the pipe, the gripping member being transformable between a release position (V) allowing its insertion into the pipe and a pressing position (VI) wherein the gripping member (17) exerts a pressing force to the inner surface of pipe to hold the pipe firmly in relation to the tool head, - a pull rod (18) which is axially movable for transforming the gripping member between the release position (V) and the pressing position (VI), - a mandrel sleeve (19) having a conical outer surface (20) forming said expansion means (4), the mandrel sleeve being axially movable between a retracted position (VII) wherein the mandrel sleeve is at position out from the position of the end of the pipe, and an expansion position (VIII) wherein the mandrel sleeve is pushed into the end of the pipe for expanding the end of the pipe.
    [28] 28. An expander tool according to claim 27, characterized in that the tool head (2) comprises a holding sleeve (21) having an inner channel (22) to receive the pipe for holding the pipe stationary against the pushing force of the mandrel sleeve (19) during expansion of the end of the pipe from outside of the pipe.
    [29] 29. An expander tool according to claim 28, char acterized in that the holding sleeve (21) comprising mutually openable and closable holding sleeve parts (21-1, 21-2) to enable closing of the holding sleeve to a closed position (IX) around the tube for the expanding operation of the end of the tube, and for opening of the holding sleeve to an opened position (X) for releasing the expanded end of the pipe.
    [30] 30. An expander tool according to claim 29, characterized in that the holding sleeve (21) comprises a first holding sleeve part (21-1) and a second holding sleeve part (21-2), and a lock device (23) for locking the calibration sleeve parts in a closed position .
    [31] 31. An expander tool according to claim 30, characterized in that the first holding sleeve part (21-1) comprises a first pivot arm (24) which is pivoted to be turnable about a pivot hinge axle (25) , and the second holding sleeve part (21-2) comprises a second pivot arm (26) which is pivoted to be turnable about the same pivot hinge axle (25) as the first pivot arm.
    [32] 32. An expander tool according to any one of 27 to 31, characterized in that the temperature sensor (5) is arranged to the gripping member (17) and/or to the mandrel sleeve (19) and/or to the holding sleeve (21) .
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    同族专利:
    公开号 | 公开日
    FI127715B|2018-12-31|
    WO2018224389A1|2018-12-13|
    CA3065835A1|2018-12-13|
    EP3634717A1|2020-04-15|
    US20200094306A1|2020-03-26|
    EA201992578A1|2020-04-09|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    PL1792704T3|2005-12-02|2009-08-31|Sica Spa|Method for socket-forming an end of a thermoplastic material tube, in particular of a polyolefinic material, tube for pressurised fluids|
    DK2420333T3|2010-08-16|2015-03-02|Uponor Innovation Ab|Tools and methods for expansion of a touching|
    DE102012100705A1|2011-02-28|2012-08-30|Rothenberger Ag|Apparatus and method for expanding the end of a plastic pipe|
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    FI20175510A|FI127715B|2017-06-05|2017-06-05|Method for expanding an end of a pipe and expander tool|FI20175510A| FI127715B|2017-06-05|2017-06-05|Method for expanding an end of a pipe and expander tool|
    EP18728623.2A| EP3634717A1|2017-06-05|2018-05-31|Method for expanding an end of a pipe and expander tool|
    US16/619,315| US20200094306A1|2017-06-05|2018-05-31|Method for expanding an end of a pipe and expander tool|
    PCT/EP2018/064356| WO2018224389A1|2017-06-05|2018-05-31|Method for expanding an end of a pipe and expander tool|
    EA201992578A| EA201992578A1|2017-06-05|2018-05-31|METHOD OF EXTENSION OF THE END OF A PIPE AND AN EXTENSION TOOL|
    CA3065835A| CA3065835A1|2017-06-05|2018-05-31|Method for expanding an end of a pipe and expander tool|
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