Clamp for extrusion tool and extrusion tool

Abstract

The utility model relates to a clamp for an extrusion tool and the extrusion tool comprising the clamp. The clamps include a first clamp and a second clamp, each of the first clamp and the second clamp including a body and a jaw portion extending in a longitudinal direction from the body. The jaw portion of the first clamp and the jaw portion of the second clamp define a first clamping surface and a second clamping surface facing each other, and a first groove and a second groove or a first protrusion and a second protrusion are respectively formed on the first clamping surface and the second clamping surface. According to the clamp disclosed by the utility model, a common electric extrusion tool can be conveniently and quickly refitted into a special tool suitable for tightening the snap ring at low cost, so that labor-saving and efficient snap ring tightening operation is realized.

Description

Technical Field

[0001] This utility model relates to electric auxiliary tools, and in particular to an electric compression tool and clamp for tightening clasps. Background Technology

[0002] The content in this section only provides background information related to this utility model and may not constitute prior art.

[0003] Snap rings are widely used to connect at least two objects together. For example, when connecting a plastic tube and a rubber tube, the rubber tube can be overlapped radially outside the plastic tube, and the snap ring is used to tighten the overlapping area of ​​the plastic and rubber tubes to secure the two tubes together. Currently, most tools on the market for tightening snap rings are hand tools, such as hand clamps. When using hand tools to tighten large-sized snap rings, the operation is relatively laborious, inefficient, and prone to deformation due to uneven force applied to both sides of the snap ring by the operator. Utility Model Content

[0004] One objective of this invention is to provide an electric compression tool that facilitates the tightening of retaining rings, thereby improving the efficiency of retaining ring tightening operations. Another objective of this invention is to expand the functionality of ordinary electric compression tools.

[0005] One aspect of this utility model provides a clamp for an extrusion tool, the clamp including a first clamp and a second clamp. Each of the first clamp and the second clamp includes a body and a jaw portion extending longitudinally from the body. The jaw portion of the first clamp and the jaw portion of the second clamp define a first clamping surface and a second clamping surface facing each other. A first groove and a second groove are respectively formed on the first clamping surface and the second clamping surface, or a first protrusion and a second protrusion are respectively formed on the first clamping surface and the second clamping surface.

[0006] In some embodiments, the body may be provided with fastener holes for receiving fasteners.

[0007] In some embodiments, a first step may be formed between the body and the jaws, where the jaws protrude relative to the body.

[0008] In some embodiments, each of the first clamp and the second clamp may further include a lateral positioning portion that extends from the body on one side of the first clamping surface or the second clamping surface, and forms a second step portion between the lateral positioning portion and the body, at which the lateral positioning portion protrudes relative to the body.

[0009] In some embodiments, a first groove and a second groove are formed on the first clamping surface and the second clamping surface, respectively, and each of the first groove and the second groove can extend to the distal end of the jaw portion.

[0010] In some embodiments, a first groove and a second groove are formed on the first clamping surface and the second clamping surface, respectively, and each of the first groove and the second groove can be configured such that the groove depth gradually increases from the distal end of the jaw portion toward the body in the longitudinal direction.

[0011] In some implementations, the first clamp and the second clamp can be symmetrical to each other.

[0012] Another aspect of this utility model provides a compression tool, which includes: a retainer; a working head including a first compression jaw and a second compression jaw, the first compression jaw and the second compression jaw being rotatably connected to the retainer; a driver; a transmission device, wherein the driver is connected to the working head via the transmission device to drive the first compression jaw and the second compression jaw to rotate; and a clamp according to the above aspect, wherein the first clamp is fixed to the first compression jaw and the second clamp is fixed to the second compression jaw.

[0013] In some embodiments, each of the first and second squeeze jaws may be provided with a mounting groove for receiving the clamp.

[0014] In some embodiments, each of the first and second clamping jaws may be provided with mounting holes for receiving fasteners to secure the clamp.

[0015] The clamp structure of this utility model is simple and easy to assemble and disassemble. It can quickly and cost-effectively modify ordinary electric extrusion tools into special tools suitable for tightening shackles, thereby achieving labor-saving and efficient shackle tightening operations. In addition, the electric extrusion tool equipped with this clamp can apply pressure evenly to both sides of the shackle to prevent the shackle from deforming due to uneven force. Attached Figure Description

[0016] The embodiments of the present invention will be described below by way of example only with reference to the accompanying drawings. In the drawings, the same features or parts are indicated by the same reference numerals, and the drawings are not necessarily drawn to scale. In the drawings:

[0017] Figure 1 A plan view of an extrusion tool according to one embodiment of the present disclosure is shown;

[0018] Figure 2 It shows Figure 1 A magnified view of the extrusion tool's working head before the extrusion begins;

[0019] Figure 3 It shows Figure 1 A magnified view of the extrusion tool's working head as it completes the extrusion process;

[0020] Figure 4 A perspective view of a clamp for an extrusion tool according to one embodiment of the present disclosure is shown;

[0021] Figure 5 and Figure 6 They respectively showed the same as Figure 4 A perspective view and a plan view of an exemplary retaining ring that fits the clamp in the image;

[0022] Figure 7 A perspective view of a clamp for an extrusion tool according to another embodiment of the present disclosure is shown. Detailed Implementation

[0023] The following description is exemplary in nature and is not intended to limit the invention, its application, or its uses. It should be understood that in all these figures, similar reference numerals indicate the same or similar parts and features. The figures only schematically illustrate the concept and principles of embodiments of the invention and do not necessarily show the specific dimensions and scale of each embodiment. Certain parts of specific figures may be depicted in an exaggerated manner to illustrate relevant details or structures of embodiments of the invention.

[0024] In the description of the embodiments of this utility model, the directional terms related to "upper" and "lower" are used to describe the upper and lower positions of the views shown in the accompanying drawings. In practical applications, the positional relationships of "upper" and "lower" used herein can be defined according to the actual situation, and these relationships can be reversed.

[0025] Figure 1 A plan view of an extrusion tool 1 according to one embodiment of the present disclosure is shown. Figure 2 It shows Figure 1 A magnified view of the working head 10 of the extrusion tool 1 before extrusion begins. Figure 3 It shows Figure 1 A magnified view of the working head 10 of the extrusion tool when the extrusion is completed.

[0026] like Figure 1 As shown, the extrusion tool 1 may generally include a working head 10, a retainer 20, a driver 30, a transmission device 40, and optionally a battery 50 and a housing 60. Figure 1In the diagram, the housing 60 is shown in dashed lines. The working head 10 includes a first extrusion jaw 11 and a second extrusion jaw 12. The first extrusion jaw 11 defines a first extrusion surface 111, and the second extrusion jaw 12 defines a second extrusion surface 121 facing the first extrusion surface 111. The first extrusion jaw 11 and the second extrusion jaw 12 are rotatably connected to the holder 20. More specifically, the first extrusion jaw 11 and the second extrusion jaw 12 are connected to the holder 20 via a first shaft 13 and a second shaft 14, respectively, such that the first extrusion jaw 11 and the second extrusion jaw 12 can rotate about the first shaft 13 and the second shaft 14, respectively. The first extrusion jaw 11 and the second extrusion jaw 12 preferably have a symmetrical structure and are arranged symmetrically with respect to the longitudinal axis L of the extrusion tool 1. The battery 50 is connected to the driver 30 to provide electrical power. Alternatively, the battery 50 can be omitted and an external power source or other power source can be used. When the operator starts the extrusion tool 1, the power of the driver 30 is output to the working head 10 via the transmission device 40, so as to drive the first extrusion jaw 11 and the second extrusion jaw 12 to rotate around the first axis 13 and the second axis 14 respectively. Figure 2 The opening position shown is rotated inwards to... Figure 3 The compression position is shown in the diagram. In the open position, the first compression surface 111 of the first compression jaw 11 and the second compression surface 121 of the second compression jaw 12 form a predetermined initial angle, such that the first free end 112 of the first compression jaw 11 and the second free end 122 of the second compression jaw 12 are spaced apart. In the compression position, the angle between the first compression surface 111 of the first compression jaw 11 and the second compression surface 121 of the second compression jaw 12 is less than the initial angle, and preferably the first compression surface 111 and the second compression surface 121 are parallel to each other, such that the first free end 112 of the first compression jaw 11 and the second free end 122 of the second compression jaw 12 are close to each other relative to the open position. The operator can also use the driver 30 or other reset device to move the first compression jaw 11 and the second compression jaw 12 around the first axis 13 and the second axis 14, respectively. Figure 3 The squeeze position shown rotates outwards back to... Figure 2 The open position is shown. The driver 30 may include, for example, an electric motor. The crimping tool 1 can have various uses, such as as wire crimping pliers. The basic structure and working principle of such electric crimping tools are known, for example, see Chinese invention patent with authorization publication number CN104540644B.

[0027] The extrusion tool 1 can be used alone or with different accessories to expand its functionality. For example... Figure 1As shown, the first compression jaw 11 and the second compression jaw 12 of the working head 10 are respectively provided with a first mounting hole 113 and a second mounting hole 123 for attaching accessories. Furthermore, mounting grooves (not shown) for receiving accessories may also be provided on the first compression surface 111 of the first compression jaw 11 and the second compression surface 121 of the second compression jaw 12, respectively. Accessories can be positioned in the mounting grooves and secured within them by fasteners passing through the corresponding mounting holes. The mounting grooves may extend through the first free end 112 of the first compression jaw 11 and the second free end 122 of the second compression jaw 12, thereby allowing the end of the accessory to protrude from the first free end 112 of the first compression jaw 11 and the second free end 122 of the second compression jaw 12. Alternatively, the mounting grooves may be omitted, and the accessory may be attached to the outer surface of the first compression jaw 11 or the second compression jaw 12.

[0028] like Figure 2 and Figure 3 As shown, the working head 10 of the extrusion tool 1 can be fitted with a pair of clamps 70. Figure 2 and Figure 3 The working head 10 is shown semi-transparent to clearly show the clamps 70 arranged within the mounting slots of the first and second compression jaws 11 and 12. The clamps 70 include a first clamp 71 and a second clamp 72, which are attached to a first mounting hole 113 on the first compression jaw 11 and a second mounting hole 123 on the second compression jaw 12 via first fasteners 81 and 82, respectively. The first clamp 71 and the second clamp 72 preferably have a symmetrical structure to apply clamping force evenly. Alternatively, the clamps 70 can be secured to the working head 10 by any suitable means other than fasteners, for example, by a snap-fit ​​engagement.

[0029] The squeezing tool 1, equipped with clamp 70, can be used to tighten the retaining ring 9. Figure 4 A perspective view of fixture 70 is shown. Figure 5 and Figure 6 A perspective view and a plan view of an exemplary retaining ring 9 adapted to the clamp 70 are shown respectively.

[0030] like Figure 5 and Figure 6As shown, the retaining ring 9 has an open annular structure formed by winding an elongated sheet. The retaining ring has a first circumferential end 91 and a second circumferential end 92 separated from each other, the first circumferential end 91 and the second circumferential end 92 overlapping, with the first circumferential end 91 located radially inside the second circumferential end 92. Near the first circumferential end 91 of the retaining ring 9, a latch 94 protrudes radially outward from the outer peripheral surface 93 of the retaining ring 9, and near the second circumferential end 92 of the retaining ring 9, a groove 95 penetrating the outer peripheral surface 93 of the retaining ring 9 is provided. The latch 94 is received in the groove 95 and can slide within the groove 95, thereby forming an annular shape with an adjustable diameter. A plurality of radially outward protrusions 96 are provided on the outer peripheral surface 93 of the retaining ring 9. An operator can tighten the retaining ring 9 (i.e., reduce the diameter of the retaining ring 9) by clamping two protrusions 96 located near the first circumferential end 91 and the second circumferential end 92 of the retaining ring 9, respectively, and bringing these two protrusions 96 closer together. The latch 94 and protrusion 96 can be formed, for example, by stamping, such that the outer surfaces of the latch 94 and protrusion 96 protrude relative to the outer peripheral surface 93 of the retaining ring 9, and the inner surfaces of the latch 94 and protrusion 96 are recessed relative to the inner peripheral surface 97 of the retaining ring 9. In this embodiment, the protrusion 96 includes a first protrusion 961, a second protrusion 962, and a third protrusion 963, wherein the first protrusion 961 is located near the second circumferential end 92 of the retaining ring 9, the second protrusion 962 and the third protrusion 963 are located on the section of the retaining ring 9 radially inward of the second circumferential end 92, and the second protrusion 962 is located between the first protrusion 961 and the third protrusion 963. The operator can tighten the retaining ring 9 by clamping the two ends of the first protrusion 961 and the third protrusion 963 and bringing them closer together. When the retaining ring 9 is tightened until the second protrusion 962 is received in the inner recess of the first protrusion 961, the retaining ring 9 is locked.

[0031] In this embodiment, the first clamp 71 and the second clamp 72 are symmetrical; therefore, the structure of the clamp 70 will be described below primarily using the first clamp 71 as an example. It should be understood that the illustrations and descriptions of either the first clamp 71 or the second clamp 72 herein can be symmetrically applied to the other. For example... Figures 2 to 4 As shown, the first clamp 71 includes a body 711, which, in the assembled state, is received within a mounting groove in the first compression jaw 11. In this embodiment, for ease of manufacturing and installation, the body 711 is constructed to be generally elongated. The first clamp 71 also includes a first jaw portion 712 extending from the body 711 along the longitudinal direction of the first clamp 71. In the assembled state, the first jaw portion 712 extends from the first free end 112 of the first compression jaw 11 of the compression tool 1. Figure 4As best shown, the first jaw portion 712 defines a first clamping surface 713, which is opposite to the second clamping surface 723 of the second jaw portion 722 of the second clamp 72. A first groove 714 is formed on the first clamping surface 713 for receiving any of the protrusions 96 of the retaining ring 9. Preferably, the first groove 714 extends to the distal end 715 of the first jaw portion 712 to facilitate contact with and clamping of the protrusion 96 of the retaining ring 9. Preferably, the groove depth of the first groove 714 gradually increases in the longitudinal direction from the distal side to the proximal side (i.e., from the distal end 715 of the first jaw portion 712 towards the body 711), thereby preventing the protrusion 96 of the retaining ring 9 from dislodging from the first groove 714 during rotation of the first clamp 71 together with the first squeezing jaw 11 about the first axis 13. Symmetrical to the first groove 714, a second groove (not shown) for receiving any of the protrusions 96 of the clasp 9 is also formed on the second clamping surface 723 of the second jaw portion 722 of the second clamp.

[0032] like Figure 4 As shown in the optimal configuration, a first stepped portion 716 is formed between the body 711 and the first jaw portion 712 of the first clamp 71, and at the first stepped portion 716, the first jaw portion 712 protrudes relative to the body 711. Figures 1 to 3 As shown, the first stepped portion 716 can abut against the first free end 112 of the first extrusion jaw 11 of the extrusion tool 1 to position the first clamp 71 relative to the first extrusion jaw 11 in the longitudinal direction of the first clamp 71. The first clamp 71 may also include a lateral positioning portion 717 extending from the body 711 on one side of the first clamping surface 713, forming a second stepped portion 718 between the lateral positioning portion 717 and the body 711, at which the lateral positioning portion 717 protrudes relative to the body 711. Figure 2 and Figure 3 As shown, the second stepped portion 718 can abut against the first pressing surface 111 of the first pressing jaw 11 to position the first clamp 71 relative to the first pressing jaw 11 in the lateral direction. Figure 4 As shown in the optimal configuration, the body 711 of the first clamp 71 is provided with a fastener hole 719. (This is in conjunction with...) Figures 1 to 3 As shown, after the first clamp 71 is received in the mounting groove of the first compression jaw 11 and properly positioned by the first step 716 and the second step 718, the first fastener 81 passes through the first mounting hole 113 on the first compression jaw 11 and the fastener hole 719 on the first clamp 71 to fasten the first clamp 71 to the first compression jaw 11. The second clamp 72 also has a symmetrical positioning and fixing structure.

[0033] Combination Figures 1 to 6As shown, when using the extrusion tool 1 equipped with clamps 70 to tighten the retaining ring 9, the operator first puts the first extrusion jaw 11 and the second extrusion jaw 12 of the extrusion tool 1 in the open position (e.g., Figure 2 (As shown), and the first groove 714 of the first clamp 71 mounted on the first compression jaw 11 receives the end 961a of the first protrusion 961 of the retaining ring 9 near the outside of the compression tool 1, and the second groove (not shown) of the second clamp 72 mounted on the second compression jaw 12 receives the end 963a of the third protrusion 963 of the retaining ring 9 near the outside of the compression tool 1. Then, the operator activates the compression tool 1, causing the driver 30 to drive the first compression jaw 11 and the second compression jaw 12 to rotate inward from the open position to the compression position (as shown) via the transmission device 40 about the first axis 13 and the second axis 14, respectively. Figure 3 As shown), the first groove 714 of the first clamp 71 and the second groove of the second clamp 72 force the first protrusion 961 and the third protrusion 963 received therein closer together, thus reducing the diameter of the retaining ring 9. When the retaining ring 9 is tightened until the second protrusion 962 located between the first protrusion 961 and the third protrusion 963 is received in the inner recess of the first protrusion 961, the retaining ring 9 is locked. The extrusion tool 1 and clamp 70 according to the present invention are not limited to those... Figure 5 and Figure 6 The clasp 9 shown is not used together, but can be adapted to clasps of different shapes with protrusions on various peripheral surfaces.

[0034] Figure 7 A perspective view of a clamp 70' for an extrusion tool according to another embodiment of the present disclosure is shown. Figure 7 In this drawing, features that are the same as or similar to those in the clamp 70 of the aforementioned embodiments are indicated by the same reference numerals with apostrophes. For example... Figure 7 As shown, the clamp 70' includes a first clamp 71' and a second clamp 72' that cooperate with each other, and the first clamp 71' and the second clamp 72' preferably have a symmetrical structure. A first protrusion 714' protruding from the first clamping surface 713' is provided on the first clamping surface 712' defined by the first jaw portion 712' of the first clamp 71'. Correspondingly, a second protrusion 724' protruding from the second clamping surface 723' is provided on the second clamping surface 723' defined by the second jaw portion 722' of the second clamp 72'. Except for replacing the first groove 714 and the second groove in the clamp 70 of the foregoing embodiments with the first protrusion 714' and the second protrusion 724', other aspects of the clamp 70' according to this embodiment may be the same as or similar to those of the clamp 70 according to the foregoing embodiments, and will not be described again herein.

[0035] Similar to clamp 70, the first clamp 71' and the second clamp 72' of clamp 70' can be respectively mounted to Figures 1 to 3 The extrusion tool 1 shown has a first extrusion jaw 11 and a second extrusion jaw 12, and can be used for tightening. Figure 5 and Figure 6 The retaining ring 9 is shown. Specifically, when the first and second clamping jaws 11 and 12 of the clamping tool 1 are in the open position (e.g., Figure 2 When (as shown), the first protrusion 714' on the first clamp 71' of the clamp 70' can be engaged with the end 961a of the first protrusion 961 of the retaining ring 9 near the outer side of the pressing tool 1. In particular, the first protrusion 961 of the retaining ring 9 can be formed by stamping such that its outer surface protrudes relative to the outer peripheral surface 93 of the retaining ring 9 and its inner surface is recessed relative to the inner peripheral surface 97 of the retaining ring 9, thereby forming a bag-like structure with an opening at the end 961a. In this case, it is advantageous to at least partially receive the first protrusion 714' on the first clamp 71' of the clamp 70' into the opening at the end 961a of the first protrusion 961 of the retaining ring 9, thereby firmly fixing the first protrusion 714' on the first clamp 71' to the retaining ring 9 and preventing the first clamp 71' from disengaging from the retaining ring 9 during the tightening of the retaining ring 9. Similarly, the second protrusion 724' on the second clamp 72' of clamp 70' can be used to engage the end 963a of the third protrusion 963 of the retaining ring 9 near the outer side of the pressing tool 1. In cases where the third protrusion 963 is formed by stamping such that its outer surface protrudes relative to the outer peripheral surface 93 of the retaining ring 9 and its inner surface is recessed relative to the inner peripheral surface 97 of the retaining ring 9, thus forming a bag-like structure with an opening at the end 963a, it is preferable that the second protrusion 724' on the second clamp 72' is at least partially received within the opening at the end 963a of the third protrusion 963 of the retaining ring 9. Subsequently, the operator activates the pressing tool 1, causing the driver 30 to drive the first pressing jaw 11 and the second pressing jaw 12 to rotate inward from the open position to the pressing position (e.g., via the transmission device 40) about the first axis 13 and the second axis 14, respectively. Figure 3 As shown), the first protrusion 714' of the first clamp 71' and the second protrusion 724' of the second clamp 72' force the first protrusion 961 and the third protrusion 963 of the retaining ring 9 closer together, thus reducing the diameter of the retaining ring 9. When the retaining ring 9 is tightened until the second protrusion 962 located between the first protrusion 961 and the third protrusion 963 is received in the inner recess of the first protrusion 961, the retaining ring 9 is locked. The clamp 70' is not limited to... Figure 5 and Figure 6 The exemplary retaining ring 9 shown is used together, but can be adapted to retaining rings of different shapes with protrusions on various peripheral surfaces.

[0036] This invention provides a clamp that allows for the simple, quick, and low-cost conversion of electric crimping tools such as wire crimping pliers into specialized tools for tightening shackles. This clamp is easy to install and remove, significantly improving the flexibility and expanding the functionality of the crimping tool. Electric crimping tools equipped with this clamp allow operators to tighten shackles with less force, reducing operational difficulty and increasing efficiency. Furthermore, the electric crimping tool can apply pressure evenly to both sides of the shackle, thus helping to prevent deformation of the shackle due to uneven force.

[0037] Exemplary embodiments of the clamp and extrusion tool according to the present invention have been described in detail herein. However, it should be understood that the present invention is not limited to the specific embodiments described and shown above. Various modifications and variations can be made to the present invention by those skilled in the art without departing from its spirit and scope. All such modifications and variations fall within the scope of the present invention. Moreover, all components described herein can be replaced by other technically equivalent components.

Claims

1. A clamp for an extrusion tool, the clamp comprising a first clamp and a second clamp, characterized in that, Each of the first clamp and the second clamp includes: The subject; and The jaws extending longitudinally from the body, The jaws of the first clamp and the jaws of the second clamp define a first clamping surface and a second clamping surface that face each other. A first groove and a second groove are formed on the first clamping surface and the second clamping surface, respectively, or a first protrusion and a second protrusion are formed on the first clamping surface and the second clamping surface, respectively.

2. The clamp according to claim 1, characterized in that, The body is provided with fastener holes for receiving fasteners.

3. The clamp according to claim 1, characterized in that, A first stepped portion is formed between the body and the jaw portion, and at the first stepped portion, the jaw portion protrudes relative to the body.

4. The clamp according to any one of claims 1 to 3, characterized in that, Each of the first clamp and the second clamp further includes a lateral positioning portion extending from the body on one side of the first clamping surface or the second clamping surface, and forming a second step portion between the lateral positioning portion and the body, at which the lateral positioning portion protrudes relative to the body.

5. The clamp according to any one of claims 1 to 3, characterized in that, The first groove and the second groove are formed on the first clamping surface and the second clamping surface, respectively, and each of the first groove and the second groove extends to the distal end of the jaw portion.

6. The clamp according to any one of claims 1 to 3, characterized in that, The first groove and the second groove are formed on the first clamping surface and the second clamping surface, respectively, and each of the first groove and the second groove is configured such that the groove depth gradually increases from the distal end of the jaw portion toward the body along the longitudinal direction.

7. The clamp according to any one of claims 1 to 3, characterized in that, The first clamp and the second clamp are symmetrical to each other.

8. An extrusion tool, characterized in that, The extrusion tool includes: retaining components; The working head includes a first extrusion jaw and a second extrusion jaw, which are rotatably connected to the retaining member. drive; A transmission device, wherein the driver is connected to the working head via the transmission device to drive the first extrusion jaws and the second extrusion jaws to rotate; and The clamp according to any one of claims 1 to 7, wherein the first clamp is fixed to the first compression jaw, and the second clamp is fixed to the second compression jaw.

9. The extrusion tool according to claim 8, characterized in that, Each of the first and second compression jaws is provided with a mounting groove for receiving the clamp.

10. The extrusion tool according to claim 8 or 9, characterized in that, Each of the first and second clamping jaws is provided with a mounting hole for receiving a fastener to secure the clamp.

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