A copper bar insulation heat-shrink sleeve cutting tool

Abstract

The application discloses a copper bar insulation heat-shrinkable sleeve cutting tool, which comprises a handheld device and a cutting device; the cutting device comprises a connecting rod assembly, a first reset spring, a movable plate, a first blade and a second blade; one end of the connecting rod assembly is connected with the handheld device, the other end of the connecting rod assembly is connected with the first blade and the second blade respectively, the first blade and the second blade are located on the same plane, and the first blade and the second blade have a cutting gap for the insulation heat-shrinkable sleeve to pass through; the first reset spring is sleeved on the connecting rod assembly, the movable plate is connected with one end of the first reset spring close to the handheld device, and the movable plate can slide relative to the connecting rod assembly in the direction close to or away from the cutting gap through the first reset spring. The application can conveniently and stably complete smooth cutting of the heat-shrinkable sleeve.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cutting devices, in particular to a copper bar insulation heat-shrink sleeve cutting tool. BACKGROUND

[0002] At present, the low-voltage side of a transformer is generally narrow, and three-phase copper bars are relatively close to each other. In order to prevent the occurrence of foreign object bridging and other accidents, copper bars generally adopt the insulation heat-shrink method, that is, an insulation heat-shrink sleeve is wrapped outside the copper bar. The existence of the heat-shrink sleeve reduces the probability of accidents, but causes inconvenience to some operations. For example, when a grounding wire needs to be hung on the copper bar, in order to ensure that the grounding wire clamp has sufficient contact area with the copper bar, part of the heat-shrink sleeve needs to be cut. After the grounding wire clamp is removed, the heat-shrink sleeve needs to be buckled back to the original position, so a tool is needed to cut the heat-shrink sleeve on three sides and leave one side uncut.

[0003] The traditional method is to directly cut the heat-shrink sleeve with a paper cutter or other props. However, in actual operation, the heat-shrink sleeve cut by this method is difficult to be neat, especially when cutting at a special position such as the side of the copper bar close to the switch cabinet, the operation is inconvenient due to the limited operation space and other factors, and it is difficult to achieve fast and smooth cutting. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a copper bar insulation heat-shrink sleeve cutting tool to conveniently and stably complete smooth cutting of the heat-shrink sleeve.

[0005] In order to solve the above technical problems, the technical scheme adopted by the present application is as follows:

[0006] A copper bar insulation heat-shrink sleeve cutting tool, comprising a handheld device and a cutting device;

[0007] The cutting device comprises a connecting rod assembly, a first reset spring, a movable plate, a first blade and a second blade;

[0008] One end of the connecting rod assembly is connected to the handheld device, and the other end of the connecting rod assembly is connected to the first blade and the second blade respectively, the first blade and the second blade are located on the same plane, and the first blade and the second blade have a cutting gap for the insulation heat-shrink sleeve to pass through;

[0009] The first reset spring is sleeved on the connecting rod assembly, the movable plate is connected to one end of the first reset spring close to the handheld device, and the movable plate can slide relative to the connecting rod assembly in the direction close to or away from the cutting gap through the first reset spring.

[0010] The application has the beneficial effects that the copper bar insulation heat shrink sleeve cutting tool is composed of a handheld device and a cutting device, in use, the handheld cutting tool is close to the insulation heat shrink sleeve on the copper bar, the insulation heat shrink sleeve on the copper bar is opposite to the cutting gap, the first blade and the second blade cut the two opposite surfaces respectively, the side of the insulation heat shrink sleeve adjacent to the cut surface is abutted on the movable plate, the movable plate pushes the movable plate while passing through the cutting gap, the movable plate is always abutted on the insulation heat shrink sleeve under the action of the first return spring, the cutting tool is not easy to shake, the cutting trace deviation is avoided, uniform and smooth cutting is realized, and the smooth cutting of the heat shrink sleeve is completed conveniently and stably after the uncut side of the insulation heat shrink sleeve is cut. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a perspective view of a copper bar insulation heat shrink sleeve cutting tool related to the application;

[0012] Figure 2 It is a front view of a copper bar insulation heat shrink sleeve cutting tool (without copper bar) related to the application;

[0013] Figure 3 It is Figure 1 It is an enlarged schematic view of structure A;

[0014] Figure 4 It is an installation schematic view of a third blade of a copper bar insulation heat shrink sleeve cutting tool related to the embodiment of the application;

[0015] Figure 5 It is a right view of a copper bar insulation heat shrink sleeve cutting tool related to the application;

[0016] Figure 6 It is a bottom view of a copper bar insulation heat shrink sleeve cutting tool related to the application.

[0017] REFERENCE SIGNS:

[0018] 1, handheld device; 2, connecting rod assembly; 3, first return spring; 4, movable plate; 5, first blade; 6, second blade; 7, cutting gap; 8, third blade; 9, displacement control; 10, sliding groove; 11, handle; 12, mounting plate; 13, second limiting plate; 14, limiting groove; 15, copper bar; 16, clamping rod; 17, fourth return spring;

[0019] 21, first connecting rod; 22, second connecting rod; 23, first limiting rod; 24, second limiting rod; 25, third return spring;

[0020] 91. Push-pull handle; 92. Mounting base; 93. First limit plate; 94. Adjustable connector; 95. Second return spring;

[0021] 941. Adjustment section; 942. Threaded rod. Detailed Implementation

[0022] To explain in detail the technical content, objectives, and effects of the present invention, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0023] The existing method of using props such as paper cutters to directly cut heat shrink sleeves is difficult to achieve a smooth cut of insulating heat shrink sleeves. In addition, the cutting process often requires constant adjustment of the cutting direction of the paper cutter. It is difficult to start when facing special positions such as the copper busbar 15 on the inner side of the switch cabinet. The repeated cutting operation can also easily cause the operator's hand to get tired, making the cutting inconvenient.

[0024] Based on this, the present invention proposes a cutting tool for copper busbar insulating heat shrink sleeves, combined with Figures 1 to 6 As shown, the device includes a handheld device 1 and a cutting device. The cutting device includes a connecting rod assembly 2, a first return spring 3, a movable plate 4, a first blade 5, and a second blade 6. One end of the connecting rod assembly 2 is connected to the handheld device, and the other end of the connecting rod assembly 2 is connected to the first blade 5 and the second blade 6 respectively. The first blade 5 and the second blade 6 are located on the same plane, and there is a cutting gap 7 between the first blade 5 and the second blade 6 for an insulating heat shrink sleeve to pass through. The first return spring 3 is sleeved on the connecting rod assembly 2, and the movable plate 4 is connected to the end of the first return spring 3 near the handheld device 1, and can slide relative to the connecting rod assembly 2 towards or away from the cutting gap 7 through the first return spring 3.

[0025] In some embodiments, such as Figure 2 As shown, the first blade 5 and the second blade 6 can be circular blades of the same diameter, and are arranged one above the other on the connecting rod assembly 2; a cutting gap 7 is formed between the first blade 5 and the second blade 6; during cutting, the handheld device 1 is operated so that the copper busbar 15 with the insulating heat shrink sleeve passes through the entire cutting gap 7 relative to the connecting rod assembly 2, so that the first blade 5 and the second blade 6 can cut the upper and lower surfaces of the insulating heat shrink sleeve respectively; during the cutting process, the copper busbar 15 with the insulating heat shrink sleeve also pushes the movable plate 4 to move and causes the first return spring 3 to be stretched; the continuously stretched first return spring 3 generates an increasing force on the movable plate 4 to resist the copper busbar 15, which, together with the limiting of the first blade 5 and the second blade 6 in the vertical direction, allows the entire tool to remain stable during the cutting process. To further improve stability, a through hole is provided on the movable plate 4, through which the connecting rod assembly 2 passes.

[0026] When the cutting is completed, the operator can remove the cutting tool, so that the movable plate 4 is reset. In this way, the insulating heat-shrink sleeve is left with one side edge not cut; at this time, the operator can use a common small knife to cut any one side edge of the insulating heat-shrink sleeve.

[0027] In some embodiments, for the one side edge of the insulating heat-shrink sleeve not cut, the operator can also not use the small knife, but use the third blade 8 and the displacement control member 9 of the cutting device; the third blade 8 is arranged on the side of the movable plate 4 facing the cutting gap 7 through the displacement control member 9; the displacement control member 9 is used to move the third blade 8, and the third blade 8 is used to cut the side of the insulating heat-shrink sleeve of the copper bar 15 facing the movable plate 4. The third blade 8 corresponds to the position of the cutting gap 7, and when the copper bar 15 with the insulating heat-shrink sleeve pushes the movable plate 4, the side edge of the insulating heat-shrink sleeve has been inserted by the third blade 8, and is kept in the inserted state under the action of the first reset spring 3; at this time, the operator can move the third blade 8 through the displacement control member 9 to complete the cutting of the side edge of the insulating heat-shrink sleeve.

[0028] In some embodiments, the displacement control member 9 includes a push-pull handle 91 and a mounting seat 92; the movable plate 4 is provided with a sliding groove 10, the mounting seat 92 is slidingly arranged on the sliding groove 10, and the third blade 8 is arranged on the mounting seat 92; the push-pull handle 91 is connected with the mounting seat 92. The sliding groove 10 makes the movement of the mounting seat 92 and the third blade 8 more stable and easy to control. In addition, the displacement control member 9 further includes a first limiting plate 93 and a second reset spring 95; the first limiting plate 93 is located on one side of the sliding groove 10 in the length direction, and the push-pull handle 91 is slidingly arranged on the first limiting plate 93, and the sliding direction of the push-pull handle 91 is parallel to the sliding direction of the mounting seat 92. The first limiting plate 93 provides a support basis for the push-pull handle 91, and facilitates the operator to perform the push-pull operation. The second reset spring 95 is sleeved on the push-pull handle 91 and located between the mounting seat 92 and the first limiting plate 93; when the mounting seat 92 slides towards the first limiting plate 93, the two ends of the second reset spring 95 abut against the mounting seat 92 and the first limiting plate 93, respectively.

[0029] In some embodiments, the displacement control 9 is located on the side of the movable plate 4 facing the handheld device 1, i.e. on the same side of the handheld device 1 relative to the movable plate 4, so that the operator can operate the push-pull handle 91 on the displacement control 9 by fingers while holding the handheld device 1 with one hand, thereby moving the mounting seat 92 and the third blade 8 to complete the whole cutting process with one hand. Moreover, the cutting action of the third blade 8 can be performed after the first blade 5 and the second blade 6 complete their whole cutting process, or when the movable plate 4 is in contact with the copper bar 15 and the first return spring 3 is not elongated; in this case, the copper bar 15 is restricted by the first blade, the second blade 6 and the movable plate 4, and is not easy to shake, so that the cutting action of the third blade 8 can be stably completed.

[0030] In combination with Figure 1 and Figure 3 As a preferred arrangement, a sliding groove 10 is formed on the movable plate 4 and penetrates the front and back surfaces of the movable plate 4, and the mounting seat 92 is located at the initial position opposite to the cutting gap 7; the first limiting plate 93 is located on the side edge of the surface of the movable plate 4 away from the cutting gap 7, a hole is formed on the first limiting plate 93, and the push-pull handle 91 is arranged through the hole. In the pushing and pulling process, the operator moves the mounting seat 92 by the push-pull handle 91, the second return spring 95 sleeved on the push-pull handle 91 is clamped and contracted by the mounting seat 92 and the first limiting plate 93. When the operator's hand is released, the mounting seat 92 returns to the initial position under the action of the second return spring 95. The use of the second return spring 95 enables the third blade 8 to have an automatic return function, which facilitates the operator to perform the cutting operation.

[0031] In combination with Figure 3 and Figure 4 As a preferred arrangement, the adjustable connecting piece 94 is composed of an adjusting part 941 and a threaded rod 942; a threaded through hole is formed on the mounting seat 92 and penetrates the whole mounting seat 92; the through hole direction of the threaded through hole is close to or away from the cutting gap 7, the threaded rod 942 is threadedly connected with the threaded through hole; one end of the threaded rod 942 is connected with the adjusting part 941, and the other end is connected with the third blade 8 through a bearing. The operator can adjust the position of the third blade 8 by rotating the adjusting part 941.

[0032] As shown in Figure 4As shown, the third blade 8 is designed as a spring blade with a clamping function, specifically consisting of two upper and lower clamping rods 16 and a fourth return spring 17 in the middle. By rotating the adjustment part 941, the entire third blade 8 is moved to the left, causing the two clamping rods 16 to converge towards the middle, and the fourth spring 17 to be compressed, thereby reducing the cutting edge of the third blade 8 for clamping and inserting the insulating heat shrink sleeve on the copper busbar 15; conversely, by rotating the adjustment part 941 in the opposite direction, the entire third blade 8 is moved to the right, causing the two clamping rods 16 to expand outward, and the fourth return spring 17 to return to its original position, thereby expanding the cutting edge of the third blade 8 for releasing the copper busbar 15; when the copper busbar 15 with the insulating heat shrink sleeve is about to abut the movable plate 4, by rotating the adjustment part 941, the cutting edge of the third blade 8 is reduced, causing the third blade 8 to clamp and insert into the side of the insulating heat shrink sleeve.

[0033] In some embodiments, the connecting rod assembly 2 includes a first connecting rod 21 and a second connecting rod 22; the first connecting rod 21 and the second connecting rod 22 are arranged along a first straight line direction on the handheld device 1 and are parallel to each other; a first blade 5 is disposed on the end of the first connecting rod 21 away from the handheld device 1, and a second blade 6 is disposed on the end of the second connecting rod 22 away from the handheld device 1; a first return spring 3 is sleeved on both the first connecting rod 21 and the second connecting rod 22. There are two first connecting rods 21 and they are arranged along a second straight line direction perpendicular to the first straight line direction on the handheld device 1; there are two second connecting rods 22 and they correspond one-to-one with the first connecting rods 21; there is a one-to-one correspondence between the first connecting rod 21 and the first blade 5, and between the second connecting rod 22 and the second blade 6.

[0034] like Figure 2 As shown, in a preferred configuration, a mounting plane is provided on the handheld device 1, on which two first connecting rods 21 and two second connecting rods 22 are arranged. The spacing between the two first connecting rods 21 and the two second connecting rods 22 is the same. During cutting, the insulating heat shrink sleeve on a copper busbar 15 can be cut simultaneously to obtain a section of insulating heat shrink sleeve. In other embodiments, the fixing of the first connecting rod 21 or the second connecting rod 22 on the mounting plane of the handheld device 1 can be changed to a design that allows it to move relative to the second connecting rod 22 or the first connecting rod 21, thereby increasing the spacing between the first connecting rod 21 and the second connecting rod 22, so as to obtain an insulating heat shrink sleeve adapted to the expected cutting length during cutting. It should be noted that the change in the spacing between the first connecting rod 21 and the second connecting rod 22 is limited by the length of the slide groove 10, and is generally less than the length of the slide groove 10, so that the third blade 8 can complete its cutting of the side of the insulating heat shrink sleeve.

[0035] In some embodiments, the connecting rod assembly 2 further comprises a first limiting rod 23, a second limiting rod 24 and a third return spring 25; one end of the first limiting rod 23 is connected to the end of the first connecting rod 21 away from the handheld device 1, and one end of the second limiting rod 24 is connected to the end of the second connecting rod 22 away from the handheld device 1; the other end of the first limiting rod 23 and the other end of the second limiting rod 24 are oppositely arranged, and one third return spring 25 is respectively sleeved on the first limiting rod 23 and the second limiting rod 24; the first blade 5 is arranged on the end of the third return spring 25 on the first limiting rod 23 away from the first limiting rod 23, and the second blade 6 is arranged on the end of the third return spring 25 on the second limiting rod 24 away from the second limiting rod 24. In this way, the first blade 5 and the second blade 6 are respectively fixed on the first limiting rod 23 or the second limiting rod 24 through a third return spring 25, so that the size of the cutting gap 7 can be adjusted within a certain range. When facing the copper bar 15 with an insulating heat shrink sleeve that is thicker than the minimum cutting gap 7, the first blade 5 and the second blade 6 will adaptively move and abut against the insulating heat shrink sleeve of the copper bar 15 through the force provided by the third return spring 25, so as to ensure good cutting effect.

[0036] In some embodiments, the cutting device further comprises a second limiting plate 13; the second limiting plate 13 is arranged on the side of the movable plate 4 facing the cutting gap 7; the second limiting plate 13 is provided with a limiting groove 14 for the edge of the copper bar 15 to abut against. As shown in Figure 1 and Figure 2 , the limiting groove 14 can limit the copper bar 15 upward and downward, avoiding the situation that the cutting tool swings upward and downward due to improper operation of the operator during the cutting process, so as to realize stable cutting.

[0037] In some embodiments, the handheld device 1 mainly comprises a handle 11 and a mounting plate 12, one side of the mounting plate 12 is used for installing the entire cutting device, and the other side is connected with the handle 11; the handle 11 is provided with stripes matched with human fingers, so as to facilitate the operator to hold the handheld device 1 tightly and stably.

[0038] In some embodiments, the first connecting rod 21 and the mounting plate 12, the second connecting rod 22 and the mounting plate 12, the first connecting rod 21 and the first limiting rod 23, and the second connecting rod 22 and the second limiting rod 24 are detachably connected, and are preferably bolted, so that the cutting tool is convenient to disassemble and maintain.

[0039] Please refer to Figure 1 and Figure 2 , embodiment one of the present application is:

[0040] The utility model provides a copper bar insulation heat shrink sleeve cutting tool, which comprises a handheld device 1 and a cutting device, wherein the cutting device comprises a connecting rod assembly 2, a first reset spring 3, a movable plate 4, a first blade 5 and a second blade 6; one end of the connecting rod assembly 2 is connected with the handheld device, the other end of the connecting rod assembly 2 is connected with the first blade 5 and the second blade 6 respectively, the first blade 5 and the second blade 6 are located on the same plane, and the first blade 5 and the second blade 6 have a cutting gap 7 for the insulation heat shrink sleeve to pass through; the first reset spring 3 is sleeved on the connecting rod assembly 2, the movable plate 4 is connected with one end of the first reset spring 3 close to the handheld device 1, and the movable plate 4 can slide relative to the connecting rod assembly 2 in the direction of approaching or moving away from the cutting gap 7 through the first reset spring 3.

[0041] In the embodiment, the cutting device further comprises a third blade 8 and a displacement control member 9; the third blade 8 is arranged on one side of the movable plate 4 facing the cutting gap 7 through the displacement control member 9; the displacement control member 9 is used for moving the third blade 8, and the third blade 8 is used for cutting one side of the insulation heat shrink sleeve of the copper bar 15 facing the movable plate 4.

[0042] In the embodiment, the process of cutting the insulation heat shrink sleeve by the copper bar insulation heat shrink sleeve cutting tool is as follows:

[0043] Firstly, an operator holds the cutting tool, aligns the cutting gap 7 with one side edge of the copper bar 15, pushes the cutting tool to the copper bar 15 so that the copper bar 15 passes through the whole cutting gap 7 and abuts against the movable plate 4; in the process, the first blade 5 and the second blade 6 cut the upper and lower sides of the insulation heat shrink sleeve on the copper bar 15 respectively, and the third blade 8 inserts the side of the insulation heat shrink sleeve;

[0044] Secondly, the operator continues to push the whole cutting tool until the first blade 5 and the second blade 6 completely cut through the insulation heat shrink sleeve on the whole copper bar 15;

[0045] Then, the operator moves the third blade 8 through the displacement control member 9 to complete the cutting of the side of the insulation heat shrink sleeve while keeping the copper bar 15 abutting against the movable plate 4;

[0046] Finally, the operator slowly pulls back the cutting tool to guide the copper bar 15 to exit the whole cutting tool from the cutting gap 7.

[0047] Please refer to Figure 3 and Figure 4 , the second embodiment of the utility model is as follows:

[0048] The application discloses a cutting tool for copper bar insulation heat shrink sleeve.

[0049] In the embodiment, the first limiting plate 93 is located on one side of the sliding groove 10 in the length direction, the push-pull handle 91 is slidably arranged on the first limiting plate 93, and the sliding direction of the push-pull handle 91 is parallel to the sliding direction of the mounting seat 92.

[0050] In the embodiment, the displacement control member 9 further comprises a second reset spring 95; the second reset spring 95 is sleeved on the push-pull handle 91 and located between the mounting seat 92 and the first limiting plate 93; when the mounting seat 92 slides towards the first limiting plate 93, the two ends of the second reset spring 95 abut against the mounting seat 92 and the first limiting plate 93, respectively.

[0051] Please refer to Figure 2 The third embodiment of the application is:

[0052] The application discloses a cutting tool for copper bar insulation heat shrink sleeve.

[0053] The first connecting rod 21 and the second connecting rod 22 are arranged in parallel to each other along a first straight line direction on the handheld device 1; the first connecting rod 21 and the second connecting rod 22 are both sleeved with a first reset spring 3. One end of the first limiting rod 23 is connected to an end of the first connecting rod 21 away from the handheld device 1, and one end of the second limiting rod 24 is connected to an end of the second connecting rod 22 away from the handheld device 1; the other end of the first limiting rod 23 and the other end of the second limiting rod 24 are arranged towards each other, and a third reset spring 25 is sleeved on each of the first limiting rod 23 and the second limiting rod 24; the first blade 5 is arranged on an end of the third reset spring 25 on the first limiting rod 23 away from the first limiting rod 23, and the second blade 6 is arranged on an end of the third reset spring 25 on the second limiting rod 24 away from the second limiting rod 24.

[0054] In the embodiment, the first connecting rod 21 is two and arranged in a second straight line direction perpendicular to the first straight line direction on the handheld device 1; the second connecting rod 22 is two and corresponds to the first connecting rod 21 one by one; the first connecting rod 21 and the first blade 5 are one by one corresponding, and the second connecting rod 22 and the second blade 6 are one by one corresponding.

[0055] In summary, the application provides a copper bar insulation heat shrink sleeve cutting tool, which is composed of a handheld device and a cutting device. When in use, the cutting tool is held and approached to the insulation heat shrink sleeve on the copper bar, so that the insulation heat shrink sleeve on the copper bar passes through the cutting gap. The first blade and the second blade cut the two opposite surfaces respectively. Meanwhile, the side adjacent to the cut surface of the insulation heat shrink sleeve abuts against the movable third blade on the movable plate. The cutting is completed by the first blade, the second blade and the third blade. The movable plate is pushed while passing through the cutting gap, and the movable plate can always abut against the insulation heat shrink sleeve under the action of the first return spring. The cutting tool is not easy to shake, and the cutting tool avoids the situation of cutting line deviation and the like. The smooth cutting of the heat shrink sleeve is conveniently and stably completed.

[0056] The above description is only an embodiment of the application, and does not limit the patent scope of the application. Any equivalent transformation or direct or indirect application in the related technical field based on the content of the specification and drawings is also included in the patent protection scope of the application.

Claims

1. A copper bar insulation heat shrink sleeve cutting tool characterized by, The cutting device comprises a hand-held device and a cutting device; The cutting device comprises a connecting rod assembly, a first reset spring, a movable plate, a first blade and a second blade; One end of the connecting rod assembly is connected with the hand-held device, and the other end of the connecting rod assembly is connected with the first blade and the second blade respectively, the first blade and the second blade are located on the same plane, and the first blade and the second blade have a cutting gap for the insulation heat-shrink sleeve to pass through; The first reset spring is sleeved on the connecting rod assembly, the movable plate is connected with one end of the first reset spring close to the hand-held device, and the movable plate can slide relative to the connecting rod assembly in the direction close to or away from the cutting gap through the first reset spring; The cutting device further comprises a third blade and a displacement control member; The third blade is arranged on one side of the movable plate facing the cutting gap through the displacement control member; The displacement control member is used to move the third blade, and the third blade is used to cut one side of the copper bar insulation heat-shrink sleeve facing the movable plate; The displacement control member comprises a push-pull handle and a mounting seat; The movable plate is provided with a sliding groove, the mounting seat is slidingly arranged on the sliding groove, and the third blade is arranged on the mounting seat; The push-pull handle is connected with the mounting seat; The displacement control member further comprises an adjustable connecting member; The third blade is fixed to the mounting seat through the adjustable connecting member; The adjustable connecting member is used to adjust the distance from the third blade to one side of the mounting seat facing the cutting gap; The connecting rod assembly comprises a first connecting rod and a second connecting rod; The first connecting rod and the second connecting rod are arranged in parallel on the hand-held device along a first straight line direction; The first blade is arranged on one end of the first connecting rod away from the hand-held device, and the second blade is arranged on one end of the second connecting rod away from the hand-held device; The first connecting rod and the second connecting rod are both sleeved with one first reset spring; The first connecting rod is two and arranged in a second straight line direction perpendicular to the first straight line direction on the hand-held device; The second connecting rod is two and corresponds to the first connecting rod one by one; The first connecting rod and the first blade, and the second connecting rod and the second blade correspond one by one.

2. A copper bar insulation heat-shrink sleeve cutting tool according to claim 1, wherein, The displacement control member further comprises a first limiting plate; The first limiting plate is located on one side of the sliding groove in the length direction, and the push-pull handle is slidingly arranged on the first limiting plate, and the sliding direction of the push-pull handle is parallel to the sliding direction of the mounting seat.

3. A copper bar insulation heat-shrink sleeve cutting tool according to claim 2, wherein, The displacement control member further comprises a second reset spring; The second reset spring is sleeved on the push-pull handle and located between the mounting seat and the first limiting plate; When the mounting seat slides toward the first limiting plate, the two ends of the second reset spring abut against the mounting seat and the first limiting plate respectively.

4. A copper bar insulation heat-shrink sleeve cutting tool according to claim 1, wherein, The connecting rod assembly further comprises a first limiting rod, a second limiting rod and a third reset spring; One end of the first limiting rod is connected with one end of the first connecting rod away from the handheld device, and one end of the second limiting rod is connected with one end of the second connecting rod away from the handheld device; The other end of the first limiting rod and the other end of the second limiting rod are oppositely arranged, and one third return spring is respectively sleeved on the first limiting rod and the second limiting rod; The first blade is arranged on one end of the third return spring on the first limiting rod away from the first limiting rod, and the second blade is arranged on one end of the third return spring on the second limiting rod away from the second limiting rod.

5. A copper bar insulation heat-shrink sleeve cutting tool according to claim 1, wherein, The cutting device further comprises a second limiting plate; The second limiting plate is arranged on one side of the movable plate facing the cutting gap; The second limiting plate is provided with a limiting groove for the edge of the copper bar to abut against.

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