Special pliers for removing burrs generated after copper wire cold welding

Abstract

The invention discloses a special plier for removing burrs generated after copper wire cold welding, which comprises a plier head and two plier handles, the plier head comprises a first plier mouth and a second plier mouth which are pivoted together through a first pin shaft and are matched with each other, and the end parts of the two plier handles are respectively connected with a first connecting piece and a second connecting piece; the first connecting piece and the second connecting piece are rotatably connected through a first pin shaft to form a connector, the tail of the plier head is connected with an inserting groove formed in the connector in a matched mode, and an elastic piece is arranged between the pivoted rear sections of the first plier mouth and the second plier mouth. The opening and closing movement of the clamp handle drives the pivoted rear section of the clamp head to synchronously perform opening and closing movement through the connector; a first through groove and a second through groove which are transversely arranged in parallel at intervals are formed in the inner side face of the first clamp mouth and the inner side face of the second clamp mouth respectively, the second through groove is located behind the first through groove, a plurality of point-shaped protruding structures are arranged on the inner side wall of the first through groove, a frosted structure is arranged in the second through groove, and the outer side surfaces of the first clamp mouth and the second clamp mouth are subjected to roughening treatment.

Description

Technical Field

[0001] The invention relates to a special pliers for removing burrs generated after cold welding of copper wires. Background Art

[0002] At present, in the process of producing photovoltaic welding strips, the raw copper wires need to be connected by cold welding so that they can be produced continuously. There are a lot of burrs after two sections of copper wires are welded using a cold welding machine. In the current technical field, there are many areas for improvement in the removal of burrs after cold welding of copper wires. The existing technology mainly relies on manual grinding with files and sandpaper to deal with the burr problem of copper wire joints after cold welding.

[0003] However, this method has significant defects. On the one hand, from the perspective of efficiency, when operated manually, each joint must go through multiple grinding processes. This process is extremely cumbersome, resulting in a long processing time for a single joint. This manual mode cannot achieve batch processing, which greatly limits production efficiency and becomes a bottleneck in the entire production process. On the other hand, from a quality perspective, due to differences in the ability of different operators to control grinding force, angle, and flatness, the quality of the processed joints varies. Some joints may have problems with incomplete burr removal or damage to the dimensional accuracy of the copper wire due to excessive grinding, which has a serious negative impact on the performance and quality stability of subsequent products. Summary of the invention

[0004] The purpose of the present invention is to solve the above deficiencies in the prior art and provide a special pliers for removing burrs generated after cold welding of copper wires.

[0005] A special pliers for removing burrs generated after cold welding of copper wires, comprising a pliers head and two pliers handles, the pliers head comprising a first pliers mouth and a second pliers mouth which are pivotally connected together by a first pin shaft and cooperate with each other, the ends of the two pliers handles are respectively connected with a first connecting piece and a second connecting piece, the first connecting piece and the second connecting piece are rotatably connected by a first pin shaft and form a connecting head, the tail of the pliers head is cooperated and connected with a plug-in slot provided inside the connecting head, an elastic member is provided between the pivotal rear section of the first pliers mouth and the second pliers mouth, when the elastic member is in a naturally extended state, the tail width of the pliers head is greater than the maximum width of the plug-in slot; when the elastic member is in a compressed state, the tail width of the pliers head is less than the minimum width of the plug-in slot, and the opening and closing movement of the pliers handle drives the pivotal rear section of the pliers head to synchronously open and close the movement through the connecting head;

[0006] The inner sides of the first and second pliers jaws are provided with a first and a second through groove which are arranged in parallel and spaced apart from each other laterally. The second through groove is located behind the first through groove. The inner side wall of the first through groove is provided with a plurality of dot-shaped protrusion structures. A frosted structure is provided in the second through groove. The outer surfaces of the first and second pliers jaws are roughened.

[0007] Furthermore, the first pin shaft is a hollow cylindrical structure, a through hole is provided at the center thereof, an outer circular retaining ring is provided at the end thereof, and a first pin shaft is respectively penetrated through the upper side wall and the lower side wall of the plug-in slot.

[0008] Furthermore, a second pin is provided between the pliers head and the plug-in slot, and the second pin passes through a through hole at the center of the first pin on the pliers head and the connector.

[0009] Furthermore, a limit stopper is provided in the insertion slot for limiting the insertion depth of the clamp head.

[0010] Furthermore, a limit assembly for limiting the opening and closing angles of the two clamp handles is provided on the connecting head, and the limit assembly includes a slot provided on the first connecting member and a protrusion provided on the second connecting member, and the slot and the protrusion cooperate with each other.

[0011] Furthermore, the elastic member is a spring, and the free length of the spring is greater than the maximum opening and closing distance between the tail of the first jaw and the tail of the second jaw.

[0012] Furthermore, the first jaw and the second jaw are both provided with protruding rods, and the two ends of the elastic member are respectively sleeved on the two protruding rods.

[0013] Furthermore, the outside of the two clamp handles is provided with an anti-slip sleeve

[0014] Furthermore, the anti-slip cover is provided with anti-slip grooves.

[0015] Beneficial effects: Compared with the prior art, the present invention has the following advantages:

[0016] The first jaw and the second jaw of the pliers head are pivotally connected together by the first pin shaft, and the two pliers handles are connected by the connecting head, so as to form a tool that can be opened and closed flexibly. This design enables the pliers head to accurately clamp and process the burrs after the cold welding of the copper wire.

[0017] The matching design of the tail of the pliers head and the insertion slot, as well as the setting of the elastic member (such as a spring), enables the pliers head to remain stable when opened and closed, and can adapt to different working requirements by compressing and releasing the elastic member. When the elastic member is in a naturally extended state, the width of the tail of the pliers head is greater than the maximum width of the insertion slot, ensuring the stability of the pliers head; when the elastic member is in a compressed state, the tail of the pliers head can smoothly enter the insertion slot, realizing the installation and removal of the pliers head.

[0018] The first through groove and the second through groove on the inner side of the first jaw and the second jaw, as well as the dot-shaped protrusion structure and the frosted structure, provide a variety of processing methods. The dot-shaped protrusion structure can be used to initially remove burrs, while the frosted structure can further polish the surface of the copper wire to make it smoother. In addition, the rough treatment on the outer side of the jaws also increases the friction between the jaws and the copper wire, improving work efficiency.

[0019] The hollow cylindrical structure and through-hole design of the first pin shaft allow the second pin shaft to pass through, further enhancing the stability of the pliers head. The limit stopper in the plug-in slot limits the plug-in depth of the pliers head, preventing the pliers head from falling off or being damaged during use.

[0020] The limit assembly (slot and bump) on the connector limits the opening and closing angle of the pliers handle, ensuring the safety of operation. The free length of the elastic member (spring) is greater than the maximum opening and closing distance between the tails of the pliers mouth, ensuring that the pliers mouth can be completely closed.

[0021] The protruding rod on the jaws and the sleeve design at both ends of the elastic member enable the elastic member to be stably fixed on the jaws. The anti-slip sleeve and anti-slip pattern design on the outside of the pliers handle improves the comfort and safety during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the main structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the assembly structure of the pliers head and the pliers handle of the present invention;

[0025] Figure 4 A schematic structural diagram of the pliers handle of the present invention from one viewing angle;

[0026] Figure 5 A structural schematic diagram of the pliers handle of the present invention from another viewing angle;

[0027] Figure 6 is a schematic structural diagram of a first connecting member of the present invention;

[0028] Figure 7 is a schematic structural diagram of a second connecting member of the present invention;

[0029] Figure 8 A schematic diagram of an assembly structure of an elastic member and a pliers head of the present invention;

[0030] Fig. 9 It is a schematic diagram of another assembly structure of the elastic member and the pliers head of the present invention;

[0031] Fig.10 It is a structural schematic diagram of the clamp head in the second embodiment;

[0032] In the figure, 1, pliers head, 2, pliers handle, 101, first pliers mouth, 102, second pliers mouth, 3, first connecting member, 4, second connecting member, 5, pin shaft, 6, plug-in slot, 7, elastic member, 8, limit baffle, 9, slot, 10, protrusion, 11, groove, 12, protruding rod, 13, anti-slip sleeve, 14, anti-slip pattern, 15, first through slot, 16, second through slot. DETAILED DESCRIPTION

[0033] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0034] Embodiment 1

[0035] like Figures 1 to 3 As shown, a pair of pliers with replaceable pliers heads comprises a pliers head 1 and two pliers handles 2. The two pliers handles are provided with anti-slip sleeves 13 on the outside, and anti-slip patterns 14 on the anti-slip sleeves are provided for easy hand-held use. The pliers head comprises a first pliers mouth 101 and a second pliers mouth 102 which are pivotally connected together and cooperate with each other, that is, the first pliers mouth and the second pliers mouth can be freely rotated through a first pin shaft, so as to realize the opening and closing of the pliers mouth. This structure is a conventional structure of a pliers head in the prior art, and will not be described here. The part different from the prior art is that a through hole is provided at the center of the first pin shaft, and the second pin shaft can be passed through to connect with the pliers handle later;

[0036] In this example, the first pin shaft is a hollow cylindrical structure with a through hole at the center and an outer circular retaining ring at the end. A first pin shaft is respectively passed through the upper side wall and the lower side wall of the plug-in slot.

[0037] In this example, a second pin is provided between the clamp head and the plug-in slot, and the second pin passes through a through hole at the center of the first pin on the clamp head and the connector.

[0038] Combination Figures 4 to 7 As shown, the ends of the two pliers handles are respectively connected with a first connecting member 3 and a second connecting member 4, the first connecting member and the second connecting member are rotatably connected through a first pin shaft and form a connecting head, the first pin shaft and the second pin shaft are riveted in a rivet manner, the tail of the pliers head is matched and connected with a plug-in slot 6 provided inside the connecting head, the upper side wall and the lower side wall of the plug-in slot are also respectively penetrated with a first pin shaft, the tail of the pliers head is plugged into the plug-in slot, the connection point of the first pliers mouth and the second pliers mouth coincides with the connection point of the pliers handle, and the second pin shaft passes through, so that the two are more tightly connected;

[0039] An elastic member 7 is provided between the pivotal rear sections of the first jaw and the second jaw. The width of the insertion slot will change with the opening and closing of the two jaw handles. When the elastic member is in a naturally extended state, the width of the tail of the jaw is greater than the maximum width of the insertion slot to prevent the jaw from falling out of the insertion slot; when the elastic member is in a compressed state, the width of the tail of the jaw is less than the minimum width of the insertion slot to facilitate the assembly of the jaw and the insertion slot. In order to achieve rapid assembly of the two, a limit stopper 8 is provided in the slot to limit the insertion depth of the jaw. When the tail of the jaw collides with the limit stopper, the pivotal joint of the first jaw and the second jaw corresponds to the riveting position of the first connector and the second connector, and the opening and closing movement of the jaw handle drives the pivotal rear section of the jaw to open and close synchronously through the connector, thereby enabling the pivotal front section of the first jaw and the second jaw to achieve opening and closing movement.

[0040] In this embodiment, the elastic member is a spring, and is a convex coil spring (an ordinary coil spring in the figure). When assembled between the first jaw and the second jaw, the elastic member is arc-shaped. The use of a convex coil spring can ensure its structural strength and avoid deformation and frequent replacement of the spring.

[0041] There are many ways to assemble the spring with the first jaw and the second jaw, such as setting a groove 11 and placing the two ends of the spring in the two grooves respectively; or setting a convex rod 12 and placing the two ends of the spring on the two convex rods respectively; or other assembling methods are used. In this embodiment, the groove assembly structure is used. Figure 8 and Fig. 9 As shown, the degree of freedom of the elastic member is greater than the maximum distance that can be opened and closed between the tail of the first jaw and the tail of the second jaw, so as to prevent the elastic member from falling off between the first jaw and the second jaw. When the opening and closing distance between the ends of the first jaw and the second jaw reaches the maximum, the outer sides of the two jaws collide with the outer sides of their pivot joints, limiting their opening and closing distance. In order to enhance the structural stability of the pliers head and the connector, a limit assembly for limiting the opening and closing angles of the two pliers handles is provided on the connector, and the limit assembly includes a slot 9 provided on the first connector and a protrusion 10 provided on the second connector, and the slot and the protrusion cooperate with each other.

[0042] The method of use of the present invention is as follows:

[0043] like Figures 1 to 9As shown, before use, select the corresponding pliers head 1 according to actual needs, press the pivoted rear sections of the first pliers mouth 101 and the second pliers mouth 102 (i.e., the tail of the pliers head) inward, and the spring 7 is compressed. At this time, the width of the tail of the pliers head 1 reaches the minimum; at the same time, slightly open the two pliers handles 2 to increase the width of the plug-in slot, insert the tail of the pliers head 1 into the plug-in slot 6, until the tail of the pliers head 1 contacts the limit baffle 8, and insert the second pin shaft. At this point, the assembly of the pliers head 1 and the pliers handle 2 is completed and can be used normally; similarly, when the pliers head 1 needs to be replaced, first pull out the second pin shaft, press the tail of the current pliers head 1 inward, slightly open the two pliers handles 2, and pull the pliers head 1 out of the plug-in slot 6.

[0044] Embodiment 2

[0045] like Fig.10 As shown, in order to better deal with the burrs of the copper wire after cold welding, the inner sides of the first pliers jaws and the second pliers jaws are provided with a first through groove 15 and a second through groove 16 which are arranged in parallel and spaced apart from each other. The second through groove 15 is located behind the first through groove 16. The inner side wall of the first through groove 15 is provided with a plurality of dot-shaped protrusion structures. A frosted structure is provided in the second through groove 16. The outer surfaces of the first pliers jaws and the second pliers jaws are roughened.

[0046] It should be noted that the clamp head is made of high-strength, wear-resistant metal material, and the jaws are specially processed with a smooth surface and appropriate hardness. The jaws are flat in shape, and the area and shape are adapted to the protruding burrs at the joint, accurately clamping the protruding burrs after cold welding while avoiding damage to the copper wire body.

[0047] When operating the special pliers, the pliers mouth can accurately clamp the burrs protruding after cold welding. Its reasonable clamping force design can not only provide a stable basis for subsequent operations, but also prevent the copper wire from being deformed due to excessive force, thus facilitating the second clamp to operate.

[0048] The dot-shaped protrusions in the first through groove are made of an alloy material that has both elasticity and hardness. Its surface is covered with a special wear-resistant coating with file-like textures, which can increase the friction with the burrs and reduce the wear on the copper wire surface. The first through groove is in the shape of a flat arc, and its area and shape are optimized according to the diameter and shape of the copper wire. It is in an arc shape that matches the outer contour of the copper wire and can fit the copper wire tightly.

[0049] After clamping the burr, the operator applies pressure through the handle to squeeze the joint and remaining burrs in the clamp through the dot-shaped protrusion structure in the first through slot. With its internal texture, the remaining small burrs can be further compressed during the squeezing process, and preliminary grinding can be achieved at the same time, paving the way for the final grinding of the second through slot.

[0050] The second through slot is the key to achieve fine grinding. The inside can be matched with sandpaper, and the external structure matches the joint contour, which can fully cover the grinding area. The grinding block is made of high-hardness material to ensure the grinding effect.

[0051] The method of use of the present invention is as follows:

[0052] like Figures 1 to 9 As shown, before use, select the corresponding pliers head 1 according to actual needs, press the pivoted rear sections of the first pliers mouth 101 and the second pliers mouth 102 (i.e., the tail of the pliers head) inward, and the spring 7 is compressed. At this time, the width of the tail of the pliers head 1 reaches the minimum; at the same time, slightly open the two pliers handles 2 to increase the width of the plug-in slot, insert the tail of the pliers head 1 into the plug-in slot 6, until the tail of the pliers head 1 contacts the limit baffle 8, and insert the second pin shaft. At this point, the assembly of the pliers head 1 and the pliers handle 2 is completed and can be used normally; similarly, when the pliers head 1 needs to be replaced, first pull out the second pin shaft, press the tail of the current pliers head 1 inward, slightly open the two pliers handles 2, and pull the pliers head 1 out of the plug-in slot 6.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A special pliers for removing burrs generated after cold welding of copper wire, characterized in that: The tool holder comprises a pliers head and two pliers handles, wherein the pliers head comprises a first pliers mouth and a second pliers mouth which are pivotally connected together and matched with each other through a first pin shaft, and the ends of the two pliers handles are respectively connected with a first connecting piece and a second connecting piece, and the first connecting piece and the second connecting piece are rotatably connected with each other through a first pin shaft to form a connecting head, and the tail of the pliers head is matched and connected with a plug-in slot provided inside the connecting head, and an elastic piece is provided between the pivotal rear sections of the first pliers mouth and the second pliers mouth, and when the elastic piece is in a naturally extended state, the tail width of the pliers head is greater than the maximum width of the plug-in slot; when the elastic piece is in a compressed state, the tail width of the pliers head is less than the minimum width of the plug-in slot, and the opening and closing movement of the pliers handle drives the pivotal rear section of the pliers head to synchronously open and close the movement through the connecting head; The inner sides of the first and second pliers jaws are provided with a first and a second through groove which are arranged in parallel and spaced apart from each other laterally. The second through groove is located behind the first through groove. The inner side wall of the first through groove is provided with a plurality of dot-shaped protrusion structures. A frosted structure is provided in the second through groove. The outer surfaces of the first and second pliers jaws are roughened.

2. The special pliers for removing burrs generated after cold welding of copper wire according to claim 1 are characterized in that: The first pin shaft is a hollow cylindrical structure, with a through hole at the center and an outer circular retaining ring at the end. A first pin shaft is respectively passed through the upper side wall and the lower side wall of the plug-in slot.

3. The special pliers for removing burrs generated after cold welding of copper wire according to claim 2, characterized in that: A second pin shaft is arranged between the clamp head and the plug-in slot, and the second pin shaft passes through a through hole at the center of the first pin shaft on the clamp head and the connector.

4. The special pliers for removing burrs generated after cold welding of copper wire according to claim 1, characterized in that: A limit stopper for limiting the insertion depth of the clamp head is arranged in the insertion slot.

5. The special pliers for removing burrs generated after cold welding of copper wire according to claim 1, characterized in that: The connecting head is provided with a limit assembly for limiting the opening and closing angles of the two clamp handles. The limit assembly includes a slot provided on the first connecting member and a protrusion provided on the second connecting member. The slot and the protrusion cooperate with each other.

6. The special pliers for removing burrs generated after cold welding of copper wire according to claim 1, characterized in that: The elastic member is a spring, and the free length of the spring is greater than the maximum opening and closing distance between the tail of the first jaw and the tail of the second jaw.

7. The special pliers for removing burrs generated after cold welding of copper wire according to claim 1, characterized in that: The first jaw and the second jaw are both provided with convex rods, and the two ends of the elastic member are respectively sleeved on the two convex rods.

8. The special pliers for removing burrs generated after cold welding of copper wire according to claim 1, characterized in that: The exteriors of the two clamp handles are provided with anti-slip covers.

9. The special pliers for removing burrs generated after cold welding of copper wire according to claim 9, characterized in that: The anti-slip cover is provided with anti-slip patterns.

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