Terminal inner hole shaping device

Abstract

The utility model relates to the technical field of repairing devices, in particular to a terminal inner hole shaping device which comprises a first power assembly, a repairing shaft, a base and a top seat. An accommodating hole is formed in the base and is used for accommodating a terminal; the top seat and the base are opposite at intervals along a first direction; the repairing shaft is provided with a first end and a second end in the first direction, the first end is mounted on the top seat, the second end is opposite to the accommodating hole, and the diameter of the second end is equal to the maximum aperture of a reed in the terminal, so that the second end can be inserted into the reed in the terminal and is in interference fit with the middle part of the reed; the first power assembly is used for driving the top seat to gradually approach the base along the first direction, so that the repairing shaft is inserted into the jack of the terminal. According to the utility model, through the interference fit of the repairing shaft and the reed, the repairing work can be completed at one time.

Description

Technical Field

[0001] The utility model belongs to the technical field of terminal repair and shaping equipment, and in particular relates to a terminal inner hole shaping device. Background Art

[0002] The terminal usually includes a terminal body and a reed. The terminal body is provided with a socket, and the reed is arranged in the socket. The reed is a cylindrical structure with openings at both ends, but the cross-sectional area of ​​the reed increases from the middle to the two ends. When the external terminal is inserted into the socket of the terminal, the external terminal enters the reed and contacts the middle of the reed. Generally speaking, the diameter of the external terminal is slightly larger than the aperture in the middle of the reed but smaller than the aperture at the end of the reed.

[0003] When the spring is crimped onto the terminal body, the spring is easily squeezed and deformed by the crimping equipment, causing the middle cross-section of the spring to become smaller. The middle of the spring is not a round hole, causing the external terminal to be unable to be inserted into the terminal or to fit too tightly after insertion and be difficult to pull out. At this time, the deformed spring needs to be corrected.

[0004] At present, when the spring sheet is deformed, the wiring terminal is generally clamped by a tool, and a power part such as a cylinder is used to drive the external terminal to be repeatedly inserted into the spring sheet to expand the hole diameter in the middle of the spring sheet. It can be seen that the existing wiring terminal repair method is relatively troublesome to operate. Utility Model Content

[0005] The technical problem to be solved by the utility model is: to provide a terminal inner hole repairing device in view of the problem that the existing wiring terminal repairing method is relatively troublesome to operate.

[0006] In order to solve the above technical problems, the embodiment of the utility model provides a terminal inner hole repairing device.

[0007] It comprises a first power assembly, a repair shaft, a base and a top seat, wherein the base is provided with a receiving hole for placing the terminal, and the top seat and the base are spaced and opposite to each other along a first direction;

[0008] The repair shaft has a first end and a second end in the first direction, the first end is mounted on the top seat, and the second end is directly opposite to the receiving hole, so that the second end is suitable for inserting into the reed in the terminal and having an interference fit with the middle part of the reed;

[0009] The first power assembly is used to drive the top seat to gradually approach the base along the first direction so that the repair shaft is inserted into the insertion hole of the terminal.

[0010] Optionally, it further comprises a reset plate and a reset spring, wherein the reset plate is provided with a first through hole, and the first through hole is used for the repair shaft to pass through; the repair shaft is a circular shaft, and the first through hole is a circular hole;

[0011] The reset plate and the top seat are spaced apart and opposite to each other along the first direction, the reset spring is arranged between the reset plate and the top seat, the reset spring is retracted along the first direction, and when the reset spring is in a natural state, the second end is located in the first through hole.

[0012] Optionally, it further comprises a guide bolt, wherein the guide bolt comprises a nut, a smooth section and a threaded section sequentially connected along the first direction;

[0013] A second through hole and a third through hole are sequentially arranged on the top seat along the first direction, the second through hole and the third through hole are circular holes, the aperture of the second through hole is larger than the aperture of the third through hole, and a threaded hole is arranged on the reset plate, and the threaded hole is directly opposite to the third through hole;

[0014] The nut is placed in the second through hole, the depth of the second through hole is greater than the thickness of the nut in the first direction, the smooth section is penetrated in the third through hole, the length of the smooth section in the first direction is greater than the depth of the third through hole, so that the smooth section can extend out of the third through hole, and the threaded section is placed in the threaded hole and is threadedly connected to the threaded hole;

[0015] When the reset spring is in a natural state, there is a gap between the reset plate and the top seat, the nut abuts against the bottom wall of the second through hole, and one end of the smooth section away from the nut extends out of the third through hole and into the gap between the reset plate and the top seat;

[0016] When the reset spring is in a compressed state, the reset plate and the facing sides of the top seat abut against each other, the nut gradually approaches the opening of the second through hole, and the end of the smooth section away from the reset plate extends out of the third through hole and into the second through hole.

[0017] Optionally, a plurality of return springs are provided, and the plurality of return springs are arranged at intervals along the circumferential direction of the first through hole.

[0018] Optionally, a sliding hole is provided on the top seat, the repair shaft is passed through the sliding hole, the sliding hole is directly opposite to the first through hole, and when the facing surfaces of the reset plate and the top seat are in contact, the sliding hole is connected to the first through hole;

[0019] The terminal inner hole repair device further comprises a stripper and a stripper spring, the stripper is provided with a fourth through hole, the repair shaft is passed through the fourth through hole, the fourth through hole is a circular hole, and the aperture of the fourth through hole is smaller than the inner diameter of the stripper spring;

[0020] The material-removing spring can slide from the sliding hole into the first through hole or can slide from the first through hole into the sliding hole, and the material-removing spring is sleeved on the repair shaft.

[0021] Optionally, the material stripping member includes a sliding block and a material stripping block, the sliding block is arranged in the sliding hole, and the material stripping block is arranged on a side surface of the sliding block away from the top seat;

[0022] The fourth through hole includes a first sub-hole and a second sub-hole which are connected to each other, the first sub-hole is arranged on the slider, and the second sub-hole is arranged on the stripping block;

[0023] The first through hole comprises a first sliding hole and a second sliding hole which are connected to each other, the sliding hole and the second sliding hole are arranged on two opposite sides of the first sliding hole, the first sliding hole is used for the sliding block to slide, the second sliding hole is used for the stripping block to slide, and the first through hole is located on a side of the second sliding hole away from the first sliding hole;

[0024] A side surface of the stripping block away from the sliding block is used to overlap the surface of the socket on the terminal.

[0025] Optionally, the top seat includes a top plate and a seat plate arranged along the first direction, and the top plate and the seat plate are detachably connected;

[0026] The sliding hole includes a first sub-hole and a second sub-hole, the first sub-hole is arranged on the top plate, the second sub-hole is arranged on the base plate, the first sub-hole and the second sub-hole are opposite to and connected with each other, the depth of the first sub-hole is less than the thickness of the top plate along the first direction, the second sub-hole passes through the base plate along the first direction, and the second sub-hole is opposite to the first through hole;

[0027] The first end is fixed to the bottom wall of the first sub-hole.

[0028] Optionally, a first blind hole is provided on the top seat, and a second blind hole is provided on the reset plate, and an opening of the first blind hole is directly opposite to an opening of the second blind hole;

[0029] One end of the return spring is placed in the first blind hole, and the other end of the return spring is placed in the second blind hole. The sum of the depths of the first blind hole and the second blind hole is less than the length of the return spring in a natural state.

[0030] Optionally, it further includes at least two spaced-apart positioning posts, the positioning posts being fixed on the top seat, the reset plate being provided with a through hole, the base being provided with a positioning hole, the positioning post being passed through the through hole and being insertable into the positioning hole.

[0031] Optionally, the base includes a table top and a bottom plate arranged in sequence along the first direction, the base and the table top are detachably connected, and the accommodating hole is provided on the table top.

[0032] According to the terminal inner hole repairing device of the embodiment of the utility model, compared with the prior art which uses an external terminal to be repeatedly inserted into the socket, this embodiment drives the repair shaft to be inserted into the inner hole of the reed through the first power component and to have an interference fit with the reed, so that the repair can be performed in one time. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 An overall schematic diagram of a terminal inner hole repairing device provided by an embodiment of the utility model;

[0034] Figure 2 An exploded view of a terminal inner hole repairing device provided by an embodiment of the utility model;

[0035] Figure 3 A partial cross-sectional view of a terminal inner hole repairing device after explosion provided by an embodiment of the utility model;

[0036] Figure 4 A partial cross-sectional view of a terminal inner hole repair device provided by an embodiment of the utility model during repair;

[0037] Figure 5 A schematic diagram showing a gap between a top seat and a reset plate of a terminal inner hole repairing device provided by an embodiment of the utility model;

[0038] Figure 6 A schematic diagram of a top seat and a reset plate of a terminal inner hole repair device provided by an embodiment of the utility model being attached to each other;

[0039] Figure 7 An exploded view of a guide bolt of a terminal inner hole repairing device provided in one embodiment of the utility model;

[0040] Figure 8 It is an exploded schematic diagram of a wiring terminal in the prior art.

[0041] The reference numerals in the specification are as follows: 100, terminal; 200, reed; 300, terminal body; 400, jack;

[0042] 1. Top seat; 11. Top plate; 12. Seat plate; 14. Second through hole; 15. Third through hole; 16. Sliding hole; 161. First sub-hole; 162. Second sub-hole; 18. First blind hole; 2. Base; 21. Table; 22. Bottom plate; 23. Accommodating hole; 24. Positioning hole; 3. Reset plate; 32. Threaded hole; 33. First through hole; 331. First sliding hole; 332. Second sliding hole; 34. Second blind hole; 35. Accommodating groove; 36. Perforation; 4. Reset spring; 5. Guide column; 6. Material removal spring; 7. Material removal part; 71. Sliding block; 72. Material removal block; 73. Fourth through hole; 8. Repair shaft; 9. Guide bolt; 81. First end; 82. Second end; 91. Nut; 92. Smooth section; 93. Threaded section. DETAILED DESCRIPTION

[0043] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0044] like Figures 1 to 4 As shown, an embodiment of the utility model provides a terminal inner hole repair device, including a first power assembly, a repair shaft 8, a base 2 and a top seat 1; the base 2 is provided with a receiving hole 23, and the receiving hole 23 is used to place the terminal 100; the top seat 1 and the base 2 are spaced and opposite to each other along the first direction. The repair shaft 8 has a first end 81 and a second end 82 in the first direction, the first end 81 is installed on the top seat 1, the second end 82 and the receiving hole 23 are opposite, and the diameter of the second end is equal to the maximum diameter of the end of the spring 200, so that the second end can be inserted into the spring 200 inside the terminal 100, and has an interference fit with the middle contraction part of the spring 200, and the first power assembly is used to drive the top seat 1 to gradually approach the base 2 along the first direction. The first direction in this embodiment is the vertical up and down direction.

[0045] The first power assembly in this embodiment is a press. The base 2 is placed on the workbench of the press. The terminal 100 is placed in the receiving hole 23, and the plug hole of the terminal 100 is set upward. The top seat 1 is placed on the base 2. It is confirmed that the repair shaft 8 and the plug hole of the terminal are facing each other. The press is started. The punching shaft of the press contacts the top seat 1 and drives the top seat 1 to press downward until the second end 82 enters the plug hole and enters the spring 200. The second end and the middle part of the spring 200 are interference fit. After that, the press moves upward and removes the terminal 100 from the repair shaft 8. The middle part of the spring 200 returns to a circular hole shape under the action of its own elastic force. In this embodiment, the press drives the repair shaft 8 to make an interference fit with the spring 200, and finally makes the spring 200 return to a circular hole shape. Compared with the prior art that uses the external terminal 100 to repeatedly insert the plug hole, this embodiment can be repaired once by interference fit between the repair shaft 8 and the spring 200, and the use of the press drive can greatly save manpower investment.

[0046] Reference Figures 2 to 4 As an example, the terminal inner hole repair device also includes a reset plate 3 and a reset spring 4. The reset plate 3 is provided with a first through hole 33, and the first through hole 33 is used for the repair shaft 8 to pass through. The reset plate 3 and the top seat 1 are spaced opposite to each other along a first direction, and the reset spring 4 is provided between the reset plate 3 and the top seat 1. The reset spring 4 is extended and retracted along the first direction. When the reset spring 4 is in a natural state, the second end 82 is located in the first through hole 33. The top seat 1 and the base 2 in this embodiment are separate, and the top seat 1 and the press are also separate. If the reset plate 3 is not provided, then before stamping, the top seat 1 and the base 2 are only in contact between the repair shaft 8 and the jack of the terminal 100, and the top seat 1 may shake. At this time, it is necessary to manually support the top seat 1 during stamping, which is more troublesome to operate.

[0047] In this embodiment, after the base 2 is placed on the workbench of the press, the top seat 1 is placed on the upper surface of the base 2, and the lower surface of the reset plate 3 can be directly placed on the upper surface of the base 2. When in a natural state, there is a gap between the reset plate 3 and the top seat 1. This gap prevents the repair shaft 8 from protruding from the lower surface of the repair plate. The reset plate 3 changes the "point contact" between the above-mentioned repair shaft 8 and the socket into a surface contact between the reset plate 3 and the base 2, and the stability performance is better.

[0048] During stamping, the top seat 1 gradually approaches the reset plate 3, reducing the gap between the reset plate 3 and the top seat 1 until they are completely fitted, and the repair shaft 8 gradually extends downward from the reset plate 3 until it enters the reed 200. After the stamping is completed, the reset spring 4 will push the top seat 1 upward to restore the gap between the top seat 1 and the reset plate 3, so that the repair shaft 8 gradually retracts into the reset plate 3. Optimally, the gap between the top seat 1 and the reset plate 3 is the depth of the repair shaft 8 entering the reed 200. At this time, when the top seat 1 and the reset plate 3 are completely fitted, the repair shaft 8 completely enters the reed 200.

[0049] Reference Figures 5 to 7 As an example, the terminal inner hole repair device also includes a guide bolt 9, which includes a nut 91, a smooth section 92 and a threaded section 93 connected in sequence along the first direction. The top seat 1 is provided with a second through hole 14 and a third through hole 15 in sequence along the first direction, the aperture of the second through hole 14 is larger than the aperture of the third through hole 15, and the reset plate 3 is provided with a threaded hole 32, which is directly opposite to the third through hole 15. The nut 91 is placed in the second through hole 14, the depth of the second through hole 14 is larger than the thickness of the nut 91 in the first direction, the smooth section 92 is penetrated in the third through hole 15, the length of the smooth section 92 in the first direction is larger than the depth of the third through hole 15, so that the smooth section 92 can extend out of the third through hole 15, and the threaded section 93 is placed in the threaded hole 32 and is threadedly connected with the threaded hole 32.

[0050] When the reset spring 4 is in a natural state so that there is a gap between the reset plate 3 and the top seat 1, the nut 91 abuts against the bottom wall of the second through hole 14, and the end of the smooth section 92 away from the nut 91 extends out of the third through hole 15 and into the gap between the reset plate 3 and the top seat 1.

[0051] When the reset spring 4 is in a compressed state so that the reset plate 3 and the top seat 1 abut against each other, the nut 91 gradually approaches the opening of the second through hole 14, and the end of the smooth section 92 away from the reset plate 3 extends out of the third through hole 15 and into the second through hole 14.

[0052] In short, in the process of the reset spring 4 lifting the top seat 1 or the top seat 1 compressing the reset spring 4, the guide bolt 9 serves to limit the sliding path of the top seat 1, so that the top seat 1 always keeps sliding along the first direction. The principle is also relatively simple. The threaded section 93 of the guide bolt 9 is fixed to the reset plate 3, and the smooth section 92 of the guide bolt 9 slides with the top seat 1, thereby limiting the sliding direction of the top seat 1.

[0053] As an example, a plurality of return springs 4 are provided, and the plurality of return springs 4 are spaced apart from each other. In this embodiment, there are four return springs 4, and the four return springs 4 are respectively provided at the four corners of the return plate 3, and the elastic force of the return springs 4 is evenly applied to the top seat 1 and the return plate 3.

[0054] Reference Figures 2 to 4As an example, the top seat 1 is provided with a sliding hole 16, the repair shaft 8 is penetrated through the sliding hole 16, the sliding hole 16 is opposite to the first through hole 33, and when the facing surfaces of the reset plate 3 and the top seat 1 are in contact, the sliding hole 16 is connected to the first through hole 33. The terminal inner hole repair device also includes a stripper 7 and a stripper spring 6, the stripper 7 is provided with a fourth through hole 73, the repair shaft 8 is penetrated through the fourth through hole 73, and the aperture of the fourth through hole 73 is smaller than the inner diameter of the stripper spring 6. The stripper spring 6 can slide from the sliding hole 16 into the first through hole 33 or can slide from the first through hole 33 into the sliding hole 16, and the stripper spring 6 is sleeved on the repair shaft 8.

[0055] In this embodiment, as the press is pressed downward, the stripper 7 enters the first through hole 33 from the sliding hole 16 and contacts the terminal 100 first, abutting against the upper end of the terminal 100. Then, as the press continues to press downward, the stripper spring 6 is compressed and contracts, and the repair shaft 8 gradually passes through the fourth through hole 73 of the stripper 7 and enters the terminal 100. After the stamping is completed, the press is separated from the top seat 1, the reset spring 4 drives the top seat 1 to move upward, the repair shaft 8 moves upward, and the stripper spring 6 returns from the contracted state to the natural state, driving the stripper 7 to move downward, so that the stripper 7 pushes the terminal 100 away from the repair shaft 8.

[0056] As an example, the stripping member 7 includes a slider 71 and a stripping block 72, the slider 71 is arranged in the sliding hole 16, and the stripping block 72 is arranged on a side surface of the slider 71 away from the top seat 1. The fourth through hole 73 includes a first sub-hole 731 and a second sub-hole 732 that are connected to each other, the first sub-hole 731 is arranged on the slider 71, and the second sub-hole 732 is arranged on the stripping block 72. The first through hole 33 includes a first sliding hole 331 and a second sliding hole 332 that are connected to each other, the sliding hole 16 and the second sliding hole 332 are arranged on opposite sides of the first sliding hole 331, the first sliding hole 331 is used for the slider 71 to slide, the second sliding hole 332 is used for the stripping block 72 to slide, and a side surface of the stripping block 72 away from the slider 71 is used to overlap on the surface of the plug hole of the terminal 100, and the second sliding hole 332 is opposite to the accommodating hole.

[0057] In this embodiment, the first through hole 33 further includes a receiving groove 35 provided on the surface of the reset plate 3 close to the base 2, the receiving groove 35 is connected to the second sliding hole 332, and the receiving groove 35 is used to receive the upper end of the terminal 100, and the terminal 100 is stably disposed between the top seat 1 and the base 2 through the receiving groove 35 and the receiving hole 23 of the base 2. Of course, in other embodiments, the receiving groove 35 may not be provided, and the whole formed by the first sliding hole 331 and the second sliding hole 332 directly passes through the reset plate 3.

[0058] In this embodiment, because the terminal 100 is small in size, it is not necessary to completely abut the entire slider 71. It is only necessary to set a material stripping block 72 on the lower surface of the slider 71 to achieve abutment with the terminal 100, and the first sliding hole 331 and the second sliding hole 332 form a stepped hole, which can limit the sliding path of the slider 71. If only the slider 71 is set without the material stripping block 72, the first through hole 33 needs to be set as a through hole shape. In this case, the slider 71 is easy to slide out of the first through hole 33, and the slider 71 needs to be manually inserted into the first through hole 33, which is troublesome.

[0059] Reference Figure 1 and Figure 3 As an example, the top seat 1 includes a top plate 11 and a seat plate 12 arranged along a first direction, and the top plate 11 and the seat plate 12 are detachably connected. The sliding hole 16 includes a first sub-hole 161 and a second sub-hole 162, the first sub-hole 161 is arranged on the top plate 11, and the second sub-hole 162 is arranged on the seat plate 12, the first sub-hole 161 and the second sub-hole 162 are opposite and connected, the depth of the first sub-hole 161 is less than the thickness of the top plate 11 along the first direction, the second sub-hole 162 penetrates the seat plate 12 along the first direction, and the second sub-hole 162 is opposite to the first through hole 33. The first end 81 is fixed to the bottom wall of the first sub-hole 161.

[0060] In this embodiment, along the first direction, the first sub-hole 161 , the second sub-hole 162 , the first sub-hole 731 , the second sub-hole 732 , the first sliding hole 331 , the second sliding hole 332 , the receiving groove 35 , and the receiving hole 23 are arranged in sequence.

[0061] As an example, the top seat 1 is provided with a first blind hole 18, and the reset plate 3 is provided with a second blind hole 34, and the opening of the first blind hole 18 is opposite to the opening of the second blind hole 34. One end of the reset spring 4 is placed in the first blind hole 18, and the other end of the reset spring 4 is placed in the second blind hole 34. The sum of the depths of the first blind hole 18 and the second blind hole 34 is less than the length of the reset spring 4 in the natural state. This arrangement can hide the reset spring 4 and also limit the expansion and contraction direction of the reset spring 4.

[0062] As an example, the terminal inner hole repair device also includes at least two spaced positioning columns, which are fixed on the top seat 1, a through hole 36 is provided on the reset plate 3, and a positioning hole 24 is provided on the base 2. The positioning column is passed through the through hole 36 and can be inserted into the positioning hole 24.

[0063] Reference Figure 2 As an example, the base 2 includes a table 21 and a bottom plate 22 arranged in sequence along a first direction, the base 2 and the table 21 are detachably connected, and the receiving hole 23 is provided on the table 21. The positioning hole 24 is provided on the table 21, and the positioning hole 24 penetrates the table 21 along the first direction.

[0064] The working principle of the terminal inner hole repairing device of the embodiment of the utility model is as follows:

[0065] Place the base 2 on the workbench, and quickly place the top seat 1 on the base 2 through the guide. Since the reset plate 3 fits the upper surface of the base 2, there is no need to support the top seat 1. Then start the press, and the press drives the top seat 1 to press down.

[0066] The top seat 1 moves downward with the press, and the stripping block 72 first contacts the upper end of the terminal 100. Then the reset spring 4 and the stripping spring 6 begin to shrink as the press continues to move downward. The repair shaft 8 passes through the reset plate 3 and enters the socket until the repair shaft 8 enters the spring leaf 200. At this time, the upper surface of the reset plate 3 and the lower surface of the top seat 1 are fitted. Then the punching axis of the press moves upward, the reset spring 4 lifts the top seat 1, and the repair shaft 8 moves upward with the top seat 1. The stripping spring 6 pushes the terminal 100 downward, so that the terminal 100 is separated from the repair shaft 8. Then the top seat 1 is removed and the terminal 100 in the base 2 is taken out.

[0067] In other embodiments, the top plate 11 and the seat plate 12 are integrally formed, the sliding hole 16 is provided on the top seat 1 , the repair shaft 8 is directly welded to the top seat 1 , and the guide column 5 is also directly welded to the top seat 1 .

[0068] In other embodiments, the first power assembly and the top seat 1 can be connected, and the base 2 is also connected to the first power assembly. Taking a press as an example, the base 2 is fixed on the workbench of the press, and the top seat 1 is fixed on the punching shaft of the press. In this embodiment, the reset plate 3 and the reset spring 4 may be included, or may not be included. In the working process, it is only necessary to place the terminal 100 in the inner hole and directly start the press, and the press drives the repair shaft 8 to move downward, without placing the top seat 1 on the base 2.

[0069] 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 and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A terminal inner hole shaping device, characterized in that: It comprises a first power assembly, a repair shaft, a base and a top seat, wherein the base is provided with a receiving hole for placing the terminal, and the top seat and the base are spaced and opposite to each other along a first direction; The repair shaft has a first end and a second end in the first direction, the first end is mounted on the top seat, and the second end is directly opposite to the receiving hole, so that the second end is suitable for inserting into the reed in the terminal and having an interference fit with the middle part of the reed; The first power assembly is used to drive the top seat to gradually approach the base along the first direction so that the repair shaft is inserted into the insertion hole of the terminal.

2. The terminal inner hole shaping device according to claim 1, characterized in that: It also includes a reset plate and a reset spring, wherein the reset plate is provided with a first through hole, and the first through hole is used for the repair shaft to pass through; the repair shaft is a circular shaft, and the first through hole is a circular hole, and the first through hole is directly opposite to the receiving hole; The reset plate and the top seat are spaced apart and opposite to each other along the first direction, the reset spring is arranged between the reset plate and the top seat, the reset spring is retracted along the first direction, and when the reset spring is in a natural state, the second end is located in the first through hole.

3. The terminal inner hole shaping device according to claim 2, characterized in that: Also included is a guide bolt, the guide bolt comprising a nut, a smooth section and a threaded section sequentially connected along the first direction; A second through hole and a third through hole are sequentially arranged on the top seat along the first direction, the second through hole and the third through hole are circular holes, the aperture of the second through hole is larger than the aperture of the third through hole, and a threaded hole is arranged on the reset plate, and the threaded hole is directly opposite to the third through hole; The nut is placed in the second through hole, the depth of the second through hole is greater than the thickness of the nut in the first direction, the smooth section is penetrated in the third through hole, the length of the smooth section in the first direction is greater than the depth of the third through hole, so that the smooth section can extend out of the third through hole, and the threaded section is placed in the threaded hole and is threadedly connected to the threaded hole; When the reset spring is in a natural state, there is a gap between the reset plate and the top seat, the nut abuts against the bottom wall of the second through hole, and one end of the smooth section away from the nut extends out of the third through hole and into the gap between the reset plate and the top seat; When the reset spring is in a compressed state, the reset plate and the facing sides of the top seat abut against each other, the nut gradually approaches the opening of the second through hole, and the end of the smooth section away from the reset plate extends out of the third through hole and into the second through hole.

4. The terminal inner hole shaping device according to claim 2, characterized in that: A plurality of return springs are provided, and the plurality of return springs are arranged at intervals along the circumferential direction of the first through hole.

5. The terminal inner hole shaping device according to claim 2, characterized in that: The top seat is provided with a sliding hole, the repair shaft is passed through the sliding hole, the sliding hole is directly opposite to the first through hole, and when the facing surfaces of the reset plate and the top seat are in contact, the sliding hole is connected to the first through hole; The terminal inner hole repair device further comprises a stripper and a stripper spring, the stripper is provided with a fourth through hole, the repair shaft is passed through the fourth through hole, the fourth through hole is a circular hole, and the aperture of the fourth through hole is smaller than the inner diameter of the stripper spring; The material-removing spring can slide from the sliding hole into the first through hole or can slide from the first through hole into the sliding hole, and the material-removing spring is sleeved on the repair shaft.

6. The terminal inner hole shaping device according to claim 5, characterized in that: The material stripping member comprises a sliding block and a material stripping block, wherein the sliding block is arranged in the sliding hole, and the material stripping block is arranged on a side surface of the sliding block away from the top seat; The fourth through hole includes a first sub-hole and a second sub-hole which are connected to each other, the first sub-hole is arranged on the slider, and the second sub-hole is arranged on the stripping block; The first through hole comprises a first sliding hole and a second sliding hole which are connected to each other, wherein the sliding hole and the second sliding hole are arranged on opposite sides of the first sliding hole, the first sliding hole is used for the sliding block to slide, the second sliding hole is used for the stripping block to slide, and the accommodating hole is located on a side of the second sliding hole away from the first sliding hole; A side surface of the stripping block away from the sliding block is used to overlap the surface of the socket on the terminal.

7. The terminal inner hole shaping device according to claim 5, characterized in that: The top seat comprises a top plate and a seat plate arranged along the first direction, and the top plate and the seat plate are detachably connected; The sliding hole includes a first sub-hole and a second sub-hole, the first sub-hole is arranged on the top plate, the second sub-hole is arranged on the base plate, the first sub-hole and the second sub-hole are opposite to and connected with each other, the depth of the first sub-hole is less than the thickness of the top plate along the first direction, the second sub-hole passes through the base plate along the first direction, and the second sub-hole is opposite to the first through hole; The first end is fixed to the bottom wall of the first sub-hole.

8. The terminal inner hole shaping device according to claim 2, characterized in that: A first blind hole is arranged on the top seat, and a second blind hole is arranged on the reset plate, wherein the opening of the first blind hole faces the opening of the second blind hole; One end of the return spring is placed in the first blind hole, and the other end of the return spring is placed in the second blind hole. The sum of the depths of the first blind hole and the second blind hole is less than the length of the return spring in a natural state.

9. The terminal inner hole shaping device according to claim 2, characterized in that: It also includes at least two spaced positioning posts, which are fixed on the top seat. The reset plate is provided with a through hole, and the base is provided with a positioning hole. The positioning post is passed through the through hole and can be inserted into the positioning hole.

10. The terminal inner hole shaping device according to claim 1, characterized in that: The base includes a table top and a bottom plate sequentially arranged along the first direction, the base and the table top are detachably connected, and the accommodating hole is arranged on the table top.

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