Cold connection device

Abstract

The utility model discloses a cold connection device which comprises a main body, a cold connection mechanism and a trimming mechanism, the cold connection mechanism is arranged on the outer side of a wire rod and used for cold connection of the wire rod, the trimming mechanism comprises a trimming assembly and a friction assembly, and the trimming assembly is arranged on the main body, arranged on the outer side of the wire rod in a sleeving mode and used for trimming the wire rod subjected to cold connection; wherein the trimming assembly is provided with a trimming hole, the trimming hole penetrates through the trimming assembly in the wire extending direction, the friction assembly is contained in the trimming hole, the friction assembly is arranged on the outer side of the wire in a sleeving mode, and the wire can move relative to the friction assembly. The trimming mechanism is arranged on the cold connection device, trimming such as trimming, disordered wire removing, grinding and polishing can be conducted on the wire rod in real time after the wire rod is subjected to cold connection, trimming tools such as scissors, pliers and abrasive paper do not need to be additionally found or prepared in advance, the technological procedures of production and machining are reduced, the production efficiency is improved, and the production cost is reduced. The wire trimming device is slightly influenced by experience of an operator and a working state, and the wire trimming quality is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to copper aluminium and so on metal wire rod welding technical field, especially in kind of cold joint device. BACKGROUND

[0002] Cold pressure welding refers to the method that makes the metal to be welded produce plastic deformation under the help of pressure to realize solid-state welding. Through plastic deformation, the impurities such as oxide film on the interface of the connecting part are extruded, so that the pure metals are in close contact, intergranular bonding is achieved, and it is mainly used for welding metals with good plasticity, such as aluminum, copper and the like. When butt cold pressure welding is welded, the cold welding tongs are used to first put the cleaned workpiece into the clamp, so that the end part extends a certain length, and then clamps. When the movable clamp moves forward, pressure is applied according to the properties of the welded material and the size of the workpiece end face, and top forging is performed, so that the workpiece end face produces local plastic deformation, and part of the metal and impurities are extruded. Under the continuous action of the welding pressure, the atoms of the workpiece contact surface form intergranular bonding, so that the workpieces are tightly connected together to form a welded joint, and the cold pressure welding process is completed.

[0003] In the prior art, the metal wire rod is cold welded by using the cold pressure welding technology. After the wire rod is butt jointed, the impurities on the welded surface are extruded to form metal flash, and the wire rod extending out of the clamp by a certain length is extruded to form a tangled wire. These flash and tangled wire often need to be trimmed by using pliers or scissors and the like after the wire rod is taken out, and finally the wire rod needs to be polished with sandpaper to make it smooth and flat, so as to meet the use performance. In the prior art, additional tools are needed for trimming and polishing, and the process procedure is increased, which reduces the production efficiency, and the process quality is often greatly affected by the experience and working state of the operator. For example, the Chinese patent with publication number "CN207723724U" discloses a copper wire welding device of a power strip assembly machine. After the copper wire is welded by using the device, additional tools are needed for trimming and polishing the copper wire to make it smooth and flat. UTILITY MODEL CONTENTS

[0004] The main purpose of the utility model is to provide a cold joint device to solve the technical problems proposed in the background art.

[0005] To achieve the above-mentioned purpose, the utility model provides a cold joint device, which comprises a main body, a cold joint mechanism and a trimming mechanism. The cold joint mechanism is arranged on the outer side of the wire rod and is used for cold jointing the wire rod. The trimming mechanism comprises a trimming assembly and a friction assembly. The trimming assembly is arranged on the main body and is sleeved on the outer side of the wire rod and is used for trimming the wire rod after cold jointing. Wherein

[0006] The trimming assembly is provided with a trimming hole, the trimming hole penetrates through the trimming assembly along the extension direction of the wire rod, the friction assembly is accommodated in the trimming hole, and the friction assembly is sleeved on the outer side of the wire rod and the wire rod can move relative to the friction assembly.

[0007] In an optional embodiment, the trimming assembly includes a first trimming part and a second trimming part, the trimming hole includes a first half hole and a second half hole, the friction assembly includes a first friction block and a second friction block, the first half hole is formed on the first trimming part, the first friction block is accommodated in the first half hole, the second half hole is formed on the second trimming part, and the second friction block is accommodated in the second half hole, so that the closed wire is placed between the first friction block and the second friction block.

[0008] In an optional embodiment, the first trimming part is in sliding connection with the main body, and the cold connection device further includes an extrusion mechanism, the extrusion mechanism includes an extrusion block, a push rod, and a support block, the extrusion block is in sliding connection with the main body and in contact with the first trimming part, the support block is arranged on the main body and sleeved outside the push rod, the push rod is in contact with the extrusion block, and the push rod drives the extrusion block to extrude the first trimming part to tightly contact the second trimming part.

[0009] In an optional embodiment, the first trimming part is provided with a first inclined part inclined relative to the axis direction of the trimming hole, the extrusion block is provided with a second inclined part inclined relative to the axis direction of the trimming hole, the first inclined part is in sliding connection with the second inclined part, and the extrusion block drives the first trimming part to move so that the first trimming part moves relative to the second trimming part.

[0010] In an optional embodiment, the first trimming part is provided with a first connecting block, and the main body is provided with a first guide rail, the first connecting block being in sliding connection with the first guide rail.

[0011] In an optional embodiment, the first inclined part is provided with a second connecting block, and the second inclined part is provided with a second guide rail, the second connecting block being in sliding connection with the second guide rail.

[0012] In an optional embodiment, one end of the push rod away from the extrusion block is provided with a driving rod, and the driving rod is used to drive the push rod to push the extrusion block to extrude the first trimming part.

[0013] In an optional embodiment, a cold connection device further includes a first handle, a second handle, and a transmission mechanism, the first handle being in rotary connection with the main body, the second handle being connected with the main body, and the transmission mechanism being connected with the first handle and the cold connection mechanism and driving the cold connection mechanism to cold connect the wire.

[0014] In an optional embodiment, a cold connection device further includes a reset mechanism, the reset mechanism being connected with the first handle and the second handle and used to drive the first handle to reset.

[0015] In an alternative embodiment, the cold-joining mechanism includes a first pressing block, a second pressing block, a third pressing block, and a fourth pressing block arranged in a rectangular array on the main body, a first wire is arranged between the first pressing block and the second pressing block, a second wire is arranged between the third pressing block and the fourth pressing block, an axis of the first wire coincides with an axis of the second wire, the first pressing block and the second pressing block clamp the first wire, the third pressing block and the fourth pressing block clamp the second wire, and the first wire and the second wire are joined.

[0016] Compared with the prior art, the cold-joining device has the following technical effects:

[0017] The cold-joining device is provided with a trimming mechanism, so that the flash and tangled wire of the wire can be removed immediately after the wire is cold-joined, and the wire can be polished and polished, etc. The trimming tools such as scissors, pliers, and sandpaper do not need to be additionally found or prepared in advance, the process procedure of production and processing is reduced, and the production efficiency is improved. At the same time, compared with the trimming tools such as scissors and pliers, the trimming of the wire is too dependent on the experience and working state of the operator at the time, the cold-joining device is used to trim the wire, the operator only needs to put the wire to be trimmed into the trimming mechanism, and then a certain driving force is applied, which is little affected by the experience and working state of the operator. Compared with the traditional trimming process, the trimming quality of the wire of the cold-joining device is better. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative labor.

[0019] Figure 1 It is a structural schematic view of the cold-joining device of the present application;

[0020] Figure 2 It is another structural schematic view of the cold-joining device of the present application;

[0021] Figure 3 It is Figure 2 It is a structural schematic view of the trimming mechanism.

[0022] DESCRIPTION OF DRAWINGS

[0023]

[0024]

[0025] The purposes, functional features and advantages of the utility model will be further explained in combination with embodiments with reference to the drawings. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0027] It should be noted that all the directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directionality indications also change accordingly.

[0028] In addition, the description of "first", "second" and the like in the utility model is only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one feature. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of those skilled in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0029] Referring to Figures 1-3 The utility model provides a cold contact device 100.

[0030] In the embodiments of the utility model, the cold contact device 100 includes a main body 1, a cold contact mechanism 2 and a finishing mechanism 3, the cold contact mechanism 2 is arranged outside the wire 200, and is used to cold contact the wire 200, the finishing mechanism includes a finishing assembly 31 and a friction assembly 33, the finishing assembly 31 is arranged on the main body 1 and is sleeved outside the wire 200, and is used to finish the wire 200 after cold contact, wherein the finishing assembly 31 is provided with a finishing hole 32, the finishing hole 32 penetrates through the finishing assembly 31 along the wire extension direction 200, the friction assembly 33 is accommodated in the finishing hole 32, the friction assembly 33 is sleeved outside the wire 200, the wire 200 contacts the friction assembly, and the wire 200 can move relative to the friction assembly 33.

[0031] Specifically, the wire 200 can be a metal wire, including a copper wire, an aluminum wire or a copper-clad aluminum wire, but not limited to, two ends of each of the two wires 200 or two ends of one wire 200 are installed on the cold connection mechanism, and the two ends of each of the two wires 200 or the two ends of one wire 200 are clamped to the left and right pressing blocks, respectively, so that the axis of the wire 200 is located on the same line and extends a certain length from the pressing block. The cold connection mechanism 2 applies pressure to make the extending part of the metal wire 200 to be connected to produce radial plastic deformation, and the impurities such as oxide film on the connecting part interface are extruded by plastic deformation to make the pure metal tightly contact, so as to achieve intergranular bonding and realize solid-state welding. After the wires 200 are connected, the impurities on the welded surface are extruded to form a metal flash, and the wire 200 extending a certain length from the pressing block is extruded to form a tangled wire, and the pure metal of the extending part of the wire 200 is tightly contacted to form a weld. The wire 200 after cold connection is passed through the trimming mechanism 3, and the flash and tangled wire at the joint of the wire 200 are cut off by the trimming mechanism 3, and then the trimmed part of the wire 200 is polished or polished to make the wire 200 smooth and flat, meeting the use requirements.

[0032] The trimming mechanism 3 is arranged on the cold connection device 100, so that the wire 200 can be trimmed immediately after cold connection, and the trimming tools such as scissors, pliers and sandpaper do not need to be additionally found or prepared in advance, the process procedure of production and processing is reduced, and the production efficiency is improved. At the same time, compared with the trimming tools such as scissors and pliers, the trimming of the wire 200 is too dependent on the experience and working state of the operator at that time, and the trimming of the wire 200 by the cold connection device 100 only needs the operator to put the wire 200 to be trimmed into the trimming mechanism 3 and then apply a certain driving force, which is little affected by the experience and working state of the operator. Compared with the traditional trimming process, the trimming quality of the wire 200 by the cold connection device 100 is better.

[0033] In an embodiment of the present application, the wire 200 to be trimmed can pass through the friction assembly 33, and the two ends of the wire 200 are pulled back and forth, so that the flash and tangled wire on the wire 200 are scraped off when the part to be trimmed on the wire 200 passes through the two ports of the trimming hole 32, and the part to be trimmed on the wire 200 is fully rubbed and polished with the friction assembly 33 in the trimming hole 32 until the part to be trimmed on the wire 200 is trimmed smooth and flat. It can be understood that the friction assembly 33 is detachable in the trimming hole 32, and the size of the friction assembly 33 can be adjusted according to the specific implementation to adapt to the trimming process of different sizes of wires 200, thereby improving the applicability of the cold connection device 100.

[0034] For some closed wire 200, such as a wire 200 of both ends of the cold joint into a closed coil, it cannot be like not closed wire 200 can pass through the trimming hole 32, in order to further improve the applicability of the cold joint device 100, the trimming hole 32 and the friction assembly 33 are designed to be open structure so that the closed wire 200 can also pass through it to be trimmed. In an embodiment of the present application, the trimming assembly 31 is provided with a first trimming part 311 and a second trimming part 312, the trimming hole 32 comprises a first half hole 321 and a second half hole 322, the friction assembly 33 comprises a first friction block 331 and a second friction block 332, the first half hole 321 is provided on the first trimming part 311, the first friction block 331 is accommodated in the first half hole 321, the second half hole 322 is provided on the second trimming part 312, and the second friction block 332 is accommodated in the second half hole 322. The first trimming part 311 and the second trimming part 312 are separated so that the first half hole 321 and the second half hole 322 are separated, the first friction block 331 and the second friction block 332 are separated, the closed wire 200 can pass through the gap between the first friction block 331 and the second friction block 332, and the first trimming part 311 and the second trimming part 312 are closed, so that the first half hole 321 and the second half hole 322 are closed, the first friction block 331 and the second friction block 332 are closed, the friction assembly 33 is sleeved outside the wire 200, the outer side of the wire 200 is in contact with the friction assembly 33, and the wire 200 can move relative to the friction assembly 33 to perform the trimming process on the wire 200.

[0035] In an embodiment of the present application, the first trimming part 311 is slidingly connected with the main body 1, and the second trimming part 312 is fixedly connected on the main body 1. The first trimming part 311 can slide relative to the main body 1, so as to realize opening and closing of the trimming hole 32 and the friction assembly 33 for placing the closed wire 200. The cold connection device 100 further comprises an extrusion mechanism 4, which comprises an extrusion block 41, a push rod 42 and a supporting block 43. The extrusion block 41 is slidingly connected on the main body 1 and in contact with the first trimming part 311. The supporting block 43 is arranged on the main body 1 and sleeved on the outer side of the push rod 42. The push rod 42 is in contact with the extrusion block 41, and the push rod 42 pushes the extrusion block 41 to extrude the first trimming part 311. The extrusion mechanism 4 extrudes the first trimming part 311, so as to move the first trimming part 311 to the second trimming part 312 and tightly contact the second trimming part 312, thereby closing the first half hole 321 and the second half hole 322 into the trimming hole 32, and closing the first friction block 331 and the second friction block 332 into the friction assembly 33. The extrusion mechanism 4 releases the first trimming part 311, so as to move the first trimming part 311 away from the second trimming part 312 and release the second trimming part 312, thereby separating the trimming hole 32 into the first half hole 321 and the second half hole 322, and separating the friction assembly 33 into the first friction block 331 and the second friction block 332. In specific application, the push rod 42 can be a screw, and a threaded hole is arranged on the supporting block 43. The threaded hole is connected with the screw in cooperation to support the push rod 42 to push the extrusion block 41. The axis of the push rod 42 is perpendicular to the axis of the trimming hole 32. The push rod 42 pushes the extrusion block 41 to extrude the first trimming part 311 in the direction perpendicular to the axis of the trimming hole 32, so as to tightly contact the first trimming part 311 with the second trimming part 312. When the push rod 42 moves in the opposite direction, the push rod 42 releases the extrusion block 41, and the extrusion block 41 no longer extrudes the first trimming part 311. The first trimming part 311 can be manually pushed to separate the first trimming part 311 from the second trimming part 312.

[0036] Please refer to Figures 2-3, in order to further improve the applicability of the cold connection device 100, the structure layout design of the cold connection device 100 is optimized, and the axis of the push rod 42 can be arranged to be parallel to the axis of the trimming hole 32. In an embodiment of the utility model, the first trimming part 311 is provided with a first inclined part 313 inclined relative to the axis direction of the trimming hole 32 on the side away from the trimming hole 32, the extrusion block 41 is provided with a second inclined part 44 inclined relative to the axis direction of the trimming hole 32, and the first inclined part 313 is in sliding connection with the second inclined part 44. The extrusion block 41 drives the first trimming part 311 to move so that the first trimming part 311 moves relative to the second trimming part 312. When the push rod 42 pushes the extrusion block 41, the second inclined part 44 extrudes the first inclined part 313, so that the first trimming part 311 moves to the second trimming part 312, and the first trimming part 311 is tightly attached to the second trimming part 312. When the push rod 42 moves in the opposite direction, the push rod 42 releases the extrusion block 41, and the extrusion block 41 no longer extrudes the first trimming part 311. The first trimming part 311 can be manually pushed to separate the first trimming part 311 from the second trimming part 312.

[0037] In an embodiment of the utility model, the first trimming part 311 is provided with a first connecting block 314, the main body 1 is provided with a first guide rail 11, the first guide rail 11 is not parallel to the axis of the trimming hole 32, and the first connecting block 314 is in sliding connection with the first guide rail 11. Through the cooperation of the first connecting block 314 and the first guide rail 11, the first trimming part 311 can slide relative to the main body 1. The first guide rail 11 is not parallel to the axis of the trimming hole 32, and the first trimming part 311 can be away from or attached to the second trimming part 312, so as to realize the closing or separation of the trimming hole 32 and the friction assembly 33.

[0038] In an embodiment of the utility model, the first inclined part 313 is provided with a second connecting block 315, the second inclined part 44 is provided with a second guide rail 45, and the second connecting block 315 is in sliding connection with the second guide rail 45. The cooperation of the second connecting block 315 and the second guide rail 45 can make the first inclined part 313 and the second inclined part 44 slide relative to each other, and the extrusion block 41 can extrude the first trimming part 311 to tightly attach to the second trimming part 312.

[0039] In an embodiment of the utility model, the end of the push rod 42 away from the extrusion block 41 is provided with a driving rod 46, which is used to more conveniently drive the push rod 42 to push the extrusion block 41 to extrude the first trimming part 311.

[0040] In an embodiment of the utility model, the cold connection device 100 further includes a first handle 5, a second handle 6, a transmission mechanism 7 and a reset mechanism 8, the first handle 5 is rotationally connected with the main body 1, the second handle 6 is fixedly connected with the main body 1, the transmission mechanism 7 is connected with the first handle 5 and the cold connection mechanism 2 and drives the cold connection mechanism 2 to cold connect the wire 200. The reset mechanism 8 is connected with the first handle 5 and the second handle 6, and is used for driving the first handle 5 to reset, and in specific application, the reset mechanism 8 can be a spring. Holding the first handle 5 and the second handle 6 with hands, continuously extruding the first handle 5, the first handle 5 drives the transmission mechanism 7, the transmission mechanism 7 drives the cold connection mechanism 2 to work again, and the wire 200 is cold connected.

[0041] In an embodiment of the utility model, the cold connection mechanism 2 includes a first pressing block 21, a second pressing block 22, a third pressing block 23 and a fourth pressing block 24 which are arranged in a rectangular array on the main body 1, the first wire 201 is arranged between the first pressing block 21 and the second pressing block 22, the second wire 202 is arranged between the third pressing block 23 and the fourth pressing block 24, and the axis of the first wire 201 coincides with the axis of the second wire 202. The transmission mechanism 7 is connected with the first pressing block 21, the second pressing block 22, the third pressing block 23 and the fourth pressing block 24 respectively, when the handle applies a driving force, the transmission mechanism 7 drives the first pressing block 21 and the second pressing block 22 to clamp the first wire 201, drives the third pressing block 23 and the fourth pressing block 24 to clamp the second wire 202, and then the axis of the first wire 201 coincides with the axis of the second wire 202, so that the first wire 201 and the second wire 202 axially face each other, and then the first pressing block 21 and the second pressing block 22, the third pressing block 23 and the fourth pressing block 24 are driven to move to each other, so as to extrude and butt joint the first wire 201 and the second wire 202. After the handle is continuously driven for five or six times, the wire 200 is cold connected, the cold connection mechanism 2 switch is opened, the wire 200 is released and taken out to carry out the next process.

[0042] In the specific application of the present application, when the handle applies a driving force, the transmission mechanism drives the first pressing block and the second pressing block to clamp the first wire, drives the third pressing block and the fourth pressing block to clamp the second wire, and then the axes of the first wire and the second wire coincide, and then the first pressing block and the second pressing block and the third pressing block and the fourth pressing block are driven to move away from each other, so as to extrude the cold connection wire. After the handle is continuously driven for five or six times, the wire cold connection is completed, and then the cold connection mechanism switch is opened to release and take out the wire for trimming. When the wire is an open wire, the wire is passed through the friction assembly, and the two ends of the wire are pulled back and forth, so that the part of the wire to be trimmed is fully rubbed and polished with the friction assembly in the trimming hole when passing through the two ports of the trimming hole, and the part of the wire to be trimmed is polished smooth and flat. When the wire is a closed wire, the push rod is driven in the opposite direction to release the extrusion block and the first trimming part, the first trimming part is manually pushed away from the second trimming part, the closed wire is placed between the first friction block and the second friction block, and then the push rod is driven in the positive direction to push the extrusion block to extrude the first trimming part, so that the first trimming part and the second trimming part are tightly attached. The friction assembly is sleeved outside the wire, and the wire can be trimmed immediately after being cold connected on the cold connection device. The trimming tool such as scissors, pliers and sandpaper does not need to be additionally found or prepared in advance, the process procedure of production and processing is reduced, and the production efficiency is improved. At the same time, compared with the trimming tool such as scissors and pliers, the wire trimming is too dependent on the experience and working state of the operator at the time, and the cold connection device is used for trimming the wire. Only the operator needs to put the wire to be trimmed into the trimming mechanism, and then a certain driving force is applied, which is little affected by the experience and working state of the operator. Compared with the traditional trimming process, the cold connection device of the present application has better wire trimming quality.

[0043] The above only describes the preferred embodiments of the present application, and does not limit the patent range of the present application. Any equivalent structural transformation or direct / indirect application in other related technical fields within the inventive concept of the present application and the contents of the present application are included in the patent protection range of the present application.

Claims

1. A cold-joining device, characterized by: The cold connection device comprises a main body, a cold connection mechanism and a trimming mechanism, the cold connection mechanism is arranged outside the wire for cold connection of the wire, the trimming mechanism comprises a trimming assembly and a friction assembly, the trimming assembly is arranged on the main body and sleeved outside the wire for trimming the cold connected wire; Wherein The trimming assembly is provided with a trimming hole, the trimming hole penetrates through the trimming assembly along the wire extension direction, the friction assembly is accommodated in the trimming hole, and the friction assembly is sleeved outside the wire and the wire can move relative to the friction assembly.

2. A cold joining device as claimed in claim 1, characterized in that The trimming assembly comprises a first trimming part and a second trimming part, the trimming hole comprises a first half hole and a second half hole, the friction assembly comprises a first friction block and a second friction block, the first half hole is arranged on the first trimming part, the first friction block is accommodated in the first half hole, the second half hole is arranged on the second trimming part, and the second friction block is accommodated in the second half hole, so that the closed type wire is placed between the first friction block and the second friction block.

3. A cold joining device as claimed in claim 2, characterized in that The first trimming part is in sliding connection with the main body, and the cold connection device further comprises an extrusion mechanism, the extrusion mechanism comprises an extrusion block, a push rod and a supporting block, the extrusion block is in sliding connection with the main body and in contact with the first trimming part, the supporting block is arranged on the main body and sleeved outside the push rod, the push rod is in contact with the extrusion block, and the push rod drives the extrusion block to extrude the first trimming part to tightly contact the second trimming part.

4. A cold joining device as claimed in claim 3, characterized in that The first trimming part is provided with a first inclined part inclined relative to the axis direction of the trimming hole, the extrusion block is provided with a second inclined part inclined relative to the axis direction of the trimming hole, the first inclined part is in sliding connection with the second inclined part, and the extrusion block drives the first trimming part to move so that the first trimming part moves relative to the second trimming part.

5. A cold joining device as claimed in claim 4, characterised in that The first trimming part is provided with a first connecting block, the main body is provided with a first guide rail, and the first connecting block is in sliding connection with the first guide rail.

6. A cold joining device as claimed in claim 5, characterised in that The first inclined part is provided with a second connecting block, the second inclined part is provided with a second guide rail, and the second connecting block is in sliding connection with the second guide rail.

7. A cold joining device as claimed in claim 6, characterised in that The end of the push rod away from the extrusion block is provided with a driving rod, and the driving rod is used to drive the push rod to push the extrusion block to extrude the first trimming part.

8. A cold joining device as claimed in claim 7, characterised in that Further comprising a first handle, a second handle and a transmission mechanism, the first handle is in rotary connection with the main body, the second handle is connected with the main body, and the transmission mechanism is connected with the first handle and the cold connection mechanism and drives the cold connection mechanism to cold connect the wire.

9. A cold joining device as claimed in claim 8, characterised in that Further comprising a reset mechanism, the reset mechanism is connected with the first handle and the second handle and is used to drive the first handle to reset.

10. A cold joining device as claimed in claim 9, characterized in that The cold connection mechanism includes a first pressing block, a second pressing block, a third pressing block, and a fourth pressing block arranged in a rectangular array on the main body, a first wire is arranged between the first pressing block and the second pressing block, a second wire is arranged between the third pressing block and the fourth pressing block, the axis of the first wire coincides with the axis of the second wire, the first pressing block and the second pressing block clamp the first wire, the third pressing block and the fourth pressing block clamp the second wire, and the first wire and the second wire are butt-jointed.

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