Protective cover processing die and processing technology

Abstract

The application relates to a protective cover processing die and a processing technology. The protective cover processing die comprises a female die, a male die and a forming punch, the female die is provided with a forming groove, and the female die is further provided with a material removing block; the processing technology comprises the following steps: placing a workpiece in the forming groove, extruding the workpiece by using the forming punch, forming protrusions and grooves, moving a sliding block to push the material removing block to push the formed workpiece out of the forming groove, cutting off the excess part on the workpiece to obtain the protective cover, placing the workpiece in the forming groove, and then extruding the workpiece in the forming groove by using the forming punch, so that the protrusions and the grooves are integrally formed on the workpiece, the excess part on the workpiece is removed subsequently, and the protective cover is prepared, compared with directly integrally forming the protective cover, the situation that the forming punch takes out part of the workpiece when passing through the workpiece is reduced, the surface of the workpiece is more smooth, the quality is better, the whole processing technology steps are simple, the processing efficiency of the protective cover is improved, and the processing precision is high.

Description

Technical Field

[0001] This application relates to the field of mold processing, and in particular to a protective cover mold and processing technology. Background Technology

[0002] A protective cover, primarily used for the connection between the steering wheel and the steering column, such as Figure 1 and Figure 2 As shown, the device includes a cover 1, on which a through hole 11 is provided. The through hole 11 axially penetrates the cover 1. Several protrusions 2 are fixed circumferentially on the inner wall of the through hole 11, and several grooves 3 are also provided circumferentially on the inner wall of the through hole 11. The grooves 3 are located on one side of the protrusions 2 along the axial direction of the cover 1. A transition surface 4 is also provided on the inner wall of the through hole 11. The transition surface 4 is located between the protrusions 2 and the grooves 3 and is provided along the inner circumferential wall of the through hole 11. The transition surface 4 is inclined outward toward the direction close to the protrusions 2.

[0003] In related technologies, the protective cover is usually made by machining on a circular workpiece. Due to the large number of protrusions and grooves, the protective cover has high requirements for machining accuracy. However, the usual machining methods are difficult to meet the requirements for machining accuracy of the protective cover, and the operation steps are many and the processing efficiency is low, which needs to be improved. Summary of the Invention

[0004] To improve the low efficiency and precision of protective covers produced by machining, this application provides a protective cover machining mold and machining process.

[0005] Firstly, this application provides a protective cover processing mold, which adopts the following technical solution: A protective cover processing mold includes a die, a punch, and a forming punch disposed on the punch. The die has a forming groove for placing a workpiece, and the forming punch is used to extrude the workpiece in the forming groove. The inner wall of the bottom of the forming groove has an extension hole for the forming punch to extend into. The die also has a stripper block located in the extension hole and spaced apart from the inner wall of the extension hole. The stripper block has an axially formed through hole for the forming punch to extend into, and the inner wall of the through hole and the forming punch in the through hole are spaced apart.

[0006] By adopting the above technical solution, the workpiece is placed in the forming groove, and then the forming punch is used to squeeze the workpiece in the forming groove, causing the workpiece to deform and adhere to the surface of the forming punch. This allows for the integral forming of protrusions and grooves on the workpiece. Some parts of the workpiece enter the gap between the ejector block and the inner wall of the extension hole, as well as the gap between the inner wall of the through hole and the forming punch, forming excess parts. Subsequently, the formed workpiece is removed, and the excess parts on the workpiece are removed to obtain the protective cover. Compared with directly forming the protective cover in one piece, this reduces the situation where the forming punch brings out parts of the workpiece when it passes through the workpiece, resulting in a smoother workpiece surface and better quality. The entire processing steps are simple, improving the processing efficiency of the protective cover and achieving high processing accuracy.

[0007] Preferably, the die includes a die body and a pressure block disposed on the die body, the forming groove is disposed on the die body, the pressure block is located below the die body, a slider is axially slidably connected to the pressure block, the slider and the ejector block are fixedly connected, and when the slider abuts against the die body, the upper end of the ejector block is located in the forming groove.

[0008] By adopting the above technical solution, setting pressure blocks and sliders, after the workpiece is formed, the moving slider drives the ejector block to push the workpiece in the forming groove to separate from the inner wall of the forming groove, reducing the situation where the workpiece is stuck or adhered to the mold body, making ejection more convenient.

[0009] By limiting the height of the die cavity with pressure blocks, and through the cooperation between the pressure blocks and the die body, the die body abuts against the slider, limiting the ejection distance of the workpiece. This ensures that after the workpiece leaves the inner wall of the forming groove, it is still abutted against by the inner wall of the forming groove to limit the workpiece. This reduces the possibility of the workpiece falling onto the die body and causing surface defects after the ejection block pushes the workpiece completely away from the die body.

[0010] Preferably, the inner wall of the bottom of the forming groove is separated from the upper end of the ejector block.

[0011] By adopting the above technical solution, when the upper end of the ejector block is flush with the inner wall of the bottom of the forming groove, the ejector block and the workpiece are easily separated, which can cause unevenness on the surface of the workpiece. Even after removing the excess part of the workpiece, this unevenness may still exist on the surface of the workpiece. By limiting the position of the upper end of the ejector block, the surface defects such as unevenness caused by the separation of the ejector block and the workpiece can be removed by cutting, thereby improving the flatness of the workpiece surface and thus improving the quality of the workpiece.

[0012] Preferably, when the forming punch abuts against the inner wall of the bottom of the forming groove, the lower end of the forming punch is located inside the through hole.

[0013] By adopting the above technical solution, when the forming punch extrudes the workpiece, the situation of the forming punch hitting the slider and causing damage to the slider is reduced. At the same time, the situation of the slider getting stuck on the forming punch and causing insufficient contact between the surface of the forming punch and the workpiece is also reduced, thus reducing the impact on the workpiece processing.

[0014] Preferably, the mold body is provided with a guide plate, the guide plate is provided with a guide hole, the guide hole corresponds to the forming groove, and the forming punch passes through the guide hole.

[0015] By adopting the above technical solution, a guide plate and a guide hole are set. The guide hole abuts against the forming punch, thereby limiting the forming punch and guiding it so that the forming punch can enter the forming groove during processing. This reduces the possibility of the forming punch deviating and further improves the processing accuracy of the workpiece.

[0016] Preferably, the guide plate includes a plate body and a guide rod disposed on the plate body, the guide hole is disposed on the plate body, the guide rod slides axially on the die, the pressure block is provided with an elastic element, the elastic element abuts against the guide rod, so that the plate body abuts against the forming punch.

[0017] By adopting the above technical solution, during the movement of the forming punch, the forming punch is guided by the guide rod, which facilitates the forming punch entering the forming groove. After the workpiece is formed, the forming punch is moved away from the workpiece in the forming groove. At this time, the elastic element pushes the guide rod to move the plate away from the die, so that the workpiece to be processed can be placed in the forming groove for processing after the formed workpiece is removed.

[0018] Preferably, it further includes a punch sleeve, which is located on the side of the guide plate near the punch and sleeved on the outside of the forming punch. The guide plate abuts against the forming punch by pressing against the punch sleeve.

[0019] By adopting the above technical solution and setting a punch sleeve, which is pressed against the guide plate, the wear between the forming punch and the guide plate is reduced when the forming punch moves.

[0020] Preferably, the guide rod is provided with a step, the step is located on the side of the mold body near the pressure block, and the step is used to abut against the mold body.

[0021] By adopting the above technical solution and setting steps, the steps abut against the mold body, limiting the movement range of the guide rod, reducing the possibility of the guide rod sliding off the die under the action of the elastic element, and improving the stability of the guide rod sliding on the die.

[0022] Preferably, the punch is provided with a pad, which is located on the side of the forming punch away from the die.

[0023] By adopting the above technical solution, a pad is set to shorten the length of the forming punch, thereby reducing material consumption of the forming punch.

[0024] Secondly, this application provides a processing technology for a protective cover processing mold, which adopts the following technical solution: A processing technology for a protective cover processing mold includes the following steps: placing the workpiece in a forming groove, using a forming punch to squeeze the workpiece and extend it into an extension hole to form a protrusion and a groove, moving a slider to push the ejector block to push the formed workpiece out of the forming groove, and removing the excess part on the workpiece to obtain a protective cover.

[0025] By adopting the above technical solution, the grooves and protrusions on the protective cover are integrally formed by cold extrusion, and the excess extruded part on the formed workpiece is removed, so that the protective cover can be produced. The steps are simple, the processing efficiency is high, and the processing accuracy can meet the usage requirements of the protective cover.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. Place the workpiece in the forming groove, and then use the forming punch to squeeze the workpiece in the forming groove to integrally form the protrusion and groove on the workpiece. Afterwards, remove the formed workpiece and remove the excess part to obtain the protective cover. Compared with directly integrally forming the protective cover, it reduces the situation where the forming punch brings out part of the workpiece when it passes through the workpiece, making the workpiece surface smoother and the quality better. The entire processing steps are simple, which improves the processing efficiency of the protective cover and the processing accuracy is high. 2. By setting pressure blocks and sliders, the ejection distance of the workpiece is limited. After the workpiece is formed, the slider moves to drive the ejection block to push the workpiece in the forming groove to separate from the inner wall of the forming groove, reducing the situation of the workpiece sticking to the die and making ejection more convenient. 3. By limiting the position of the upper end of the ejector block, surface defects such as unevenness caused by the separation of the ejector block and the workpiece can be eliminated by cutting, thereby improving the flatness of the workpiece surface and thus improving the quality of the workpiece. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall protective cover. Figure 2 This is a cross-sectional view of the protective cover; Figure 3 This is a cross-sectional view of the protective cover processing mold according to an embodiment of this application; Figure 4 This is a partial structural diagram of the protective cover processing mold according to an embodiment of this application, mainly showing the structure of the forming punch; Figure 5 The enlarged view of section A mainly shows the structure of the ejector block; Figure 6 This is an exploded view of a portion of the protective cover processing mold according to an embodiment of this application, mainly showing the structure of the limiting block, the limiting groove, and the slot; Figure 7 This is a schematic diagram of the semi-finished product after the workpiece has been extruded by a forming punch.

[0028] Explanation of reference numerals in the attached drawings: 1. Cover body; 11. Perforation; 2. Raised strip; 3. Groove; 4. Transition surface; 5. Die; 51. Die body; 52. Pressure block; 521. Receiving hole; 6. Punch; 7. Forming punch; 8. Punch sleeve; 9. Forming groove; 91. Extension hole; 10. Unloading block; 101. Abutting part; 102. Connecting part; 103. Sliding part; 104. Connecting spring; 12. Through hole; 13. Annular groove; 14. Channel; 15. Slider; 16. Push rod; 161. Rotating part; 162. Driving part; 17. Guide plate; 171. Plate body; 172. Guide rod; 1721. Step; 18. Elastic element; 19. Pad block; 20. Limiting block; 201. Limiting groove; 2011. Slot; 21. Guide hole; 22. Workpiece; 23. Semi-finished product. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0030] A protective shield, see Figure 1 and Figure 2 The device includes a cover 1, on which a through hole 11 is provided. The through hole 11 axially penetrates the cover 1. Several protrusions 2 are fixed circumferentially on the inner wall of the through hole 11, and several grooves 3 are also provided circumferentially on the inner wall of the through hole 11. The grooves 3 are located on one side of the protrusions 2 along the axial direction of the cover 1. A transition surface 4 is also provided on the inner wall of the through hole 11. The transition surface 4 is located between the protrusions 2 and the grooves 3 and is provided along the inner circumferential wall of the through hole 11. The transition surface 4 is inclined outward toward the direction close to the protrusions 2.

[0031] This application discloses a protective cover processing mold. See also... Figure 3 and Figure 4 The protective cover processing mold includes a concave mold 5, a punch 6, a forming punch 7 and a punch sleeve 8. The punch 6 is located above the concave mold 5 and is spaced apart from the concave mold 5. The forming punch 7 is axially inserted through the punch 6 and fixed on the punch 6, and the lower end of the forming punch 7 extends out of the punch 6.

[0032] See Figure 3 and Figure 5The die 5 includes a die body 51 and a pressure block 52. A forming groove 9 is provided on the upper end face of the die body 51. The forming groove 9 is used to place the workpiece 22. The forming punch 7 is used to extrude the workpiece 22 in the forming groove 9. An extension hole 91 is provided on the inner wall of the bottom of the forming groove 9. The extension hole 91 passes through the die 5 axially and allows the forming punch 7 to extend into it.

[0033] See Figure 3 and Figure 5 The pressure block 52 is located below the mold body 51 and is fixedly connected to the mold body 51. The upper end face of the pressure block 52 is provided with a receiving hole 521. The position of the receiving hole 521 corresponds to the position of the extension hole 91. The receiving hole 521 is connected to the extension hole 91, and the end of the extension hole 91 near the receiving hole 521 is located in the area enclosed by the receiving hole 521.

[0034] See Figure 3 and Figure 5 A ejector block 10 slides axially on the mold body 51. The ejector block 10 is located inside the extension hole 91, and the outer peripheral wall of the ejector block 10 is spaced apart from the inner wall of the extension hole 91. A through hole 12 is opened on the upper end face of the ejector block 10. The through hole 12 axially penetrates the ejector block 10 and allows the forming punch 7 to extend into it. The inner wall of the through hole 12 and the outer peripheral wall of the forming punch 7 inside the through hole 12 are spaced apart. When the forming punch 7 abuts against the inner wall of the bottom of the forming groove 9, the lower end of the forming punch 7 is located inside the through hole 12.

[0035] See Figure 3 and Figure 5 The ejector block 10 includes an abutment portion 101, a connecting portion 102, a sliding portion 103, and a connecting spring 104. The connecting portion 102 is located below the abutment portion 101 and is fixedly connected to the abutment portion 101. The connecting portion 102 and the abutment portion 101 are joined to form an annular groove 13. The annular groove 13 is arranged around the outer periphery of the connecting portion 102 and is located inside and communicates with the extension hole 91. The sliding portion 103 is arranged around the outer periphery of the connecting portion 102 and fits against the connecting portion 104. The upper end of the sliding part 103 extends into the annular groove 13, and the lower end of the sliding part 103 extends out of the annular groove 13 and into the receiving hole 521. The sliding part 103 is axially slidably connected to the connecting part 102. The connecting spring 104 is sleeved on the outside of the connecting part 102 and located in the annular groove 13. The connecting spring 104 is located between the abutting part 101 and the sliding part 103. The opposite ends of the connecting spring 104 are fixedly connected to the abutting part 101 and the sliding part 103, respectively.

[0036] See Figure 5 and Figure 6A limiting groove 201 is provided on the inner ring wall of the sliding part 103, and a limiting block 20 is fixed on the outer side wall of the connecting part 102. The limiting block 20 slides axially in the limiting groove 201. A slot 2011 is provided on the inner wall of the limiting groove 201 parallel to the sliding direction of the limiting block 20. The slot 2011 is located at the end of the limiting groove 201 near the punch. The slot 2011 is used for the limiting block 20 to be inserted. When the limiting block 20 is located in the slot 2011, the inner wall of the bottom of the forming groove 9 is separated from the upper end of the abutment part 101.

[0037] See Figure 5 The mold body 51 also has a channel 14, one end of which is connected to the molding cavity and the other end of which is connected to the annular groove 13.

[0038] See Figure 3 and Figure 5 A slider 15 is axially slidably connected to the pressure block 52. The slider 15 is located inside the receiving hole 521 and is set in contact with the inner peripheral wall of the receiving hole 521. The slider 15 is rotatably connected to the pressure block 52. The rotation axis of the slider 15 is parallel to its sliding direction. The lower end of the slider 15 and the sliding part 103 are fixedly connected. When the slider 15 abuts against the mold body 51, the upper end of the abutting part 101 is located in the molding groove 9.

[0039] See Figure 3 and Figure 5 A push rod 16 is axially slidable on the pressure block 52. The push rod 16 is located on the side of the slider 15 away from the ejector block 10. The push rod 16 includes a rotating part 161 and a driving part 162. The rotating part 161 is fixedly connected to the lower end of the slider 15, and the lower end of the rotating part 161 extends downward out of the pressure block 52. The driving part 162 is located on the side of the rotating part 161 away from the slider 15, and the driving part 162 and the rotating part 161 are rotatably connected. The rotation axis of the driving part 162 and the rotating part 161 coincides with the rotation axis of the slider 15.

[0040] In actual use, when it is necessary to process workpiece 22, the rotating part 161 is rotated, which drives the slider 15 and the sliding part 103 to rotate, so that the limiting block 20 is inserted into the slot 2011. The inner wall of the slot 2011 abuts against the limiting block 20, suppressing the relative movement between the sliding part 103 and the connecting part 102, so that the forming punch 7 can squeeze the workpiece 22 in the forming groove 9.

[0041] After the workpiece 22 is formed, the rotating part 161 is rotated in the opposite direction, which drives the slider 15 and the sliding part 103 to rotate, so that the limiting block 20 disengages from the slot 2011. Then, an upward thrust can be applied to the push rod 16 by the cylinder. The push rod 16 pushes the slider 15 to move, which in turn drives the sliding part 103 to squeeze the connecting spring 104 and move upward. At this time, the volume of the annular groove 13 decreases, and the gas in the annular groove 13 is pushed into the forming groove 9 through the channel 14, so that the gas moves in the gap between the inner wall of the forming groove 9 and the workpiece 22, making the workpiece 22 loose and the mold body 51 loose. Then, the sliding part 103 drives the abutment part 101 to move upward through the connecting spring 104. The abutment part 101 pushes the workpiece 22 in the forming groove 9 to disengage from the inner wall of the forming groove 9, reducing the situation where the workpiece 22 is stuck or adhered to the mold body 51, making material removal more convenient.

[0042] By allowing gas to flow within the annular groove 13, channel 14, and forming groove 9, the adhesion force of the workpiece 22 to the mold body 51 is reduced, so that the subsequent abutment part 101 can push the workpiece 22 in the forming groove 9 to detach from the mold body 51. This reduces the possibility of excessive pushing force from the abutment part 101 on the workpiece 22, which could cause defects such as pits on the surface of the workpiece 22.

[0043] See Figure 3 and Figure 5 The punch sleeve 8 is located on the side of the punch 6 near the mold body 51 and is sleeved on the outside of the forming punch 7. The mold body 51 is provided with a guide plate 17, which includes a plate body 171 and two guide rods 172. The plate body 171 is located between the mold body 51 and the punch sleeve 8. A guide hole 21 is opened on the plate body 171. The position of the guide hole 21 corresponds to the position of the forming groove 9, and the guide hole 21 passes through the plate body 171 axially. The forming punch 7 passes through the guide hole 21.

[0044] See Figure 3 Two guide rods 172 are located on opposite sides of the forming groove 9, and both guide rods 172 slide axially on the mold body 51 and the pressure block 52. Both guide rods 172 are fixed to the plate body 171 by bolts. The plate body 171 slides on the die 5 through the cooperation of the guide rods 172 and the die 5. Each guide rod 172 is fixed with a step 1721. The step 1721 is located at the end of the guide rod 172 away from the punch 6 and on the side of the mold body 51 close to the pressure block 52. The step 1721 is used to abut against the mold body 51.

[0045] See Figure 3Several elastic elements 18 are also fixed on the pressure block 52. The number and position of the elastic elements 18 correspond one-to-one with the number and position of the guide rods 172. The elastic elements 18 are located below the corresponding guide rods 172 and are fixedly connected to the guide rods 172. The opposite ends of each elastic element 18 abut against the pressure block 52 and the corresponding guide rod 172, so that the corresponding guide rod 172 tends to approach the punch 6, and the plate 171 abuts against the forming punch 7 by abutting against the punch sleeve 8. In this embodiment, the elastic element 18 is a spring.

[0046] See Figure 3 A pad 19 is fixed on the punch 6, and the pad 19 is located on the side of the forming punch 7 away from the die 5.

[0047] The implementation principle of a protective cover processing mold in this application embodiment is as follows: The workpiece 22 is placed in the forming groove 9, and then the forming punch 7 is used to squeeze the workpiece 22 in the forming groove 9, so that the workpiece 22 is deformed and attached to the surface of the forming punch 7. The protrusion 2 and the groove 3 are integrally formed on the workpiece 22. Part of the workpiece 22 enters the gap between the ejector block 10 and the inner wall of the extension hole 91 and the gap between the inner wall of the through hole 12 and the forming punch 7 during the extrusion, forming an excess part. Subsequently, the formed workpiece 22 is taken out and the excess part on the workpiece 22 is removed to obtain the protective cover. Compared with directly integrally forming the protective cover, it reduces the situation where the forming punch 7 brings out part of the workpiece 22 when it passes through the workpiece 22, making the surface of the workpiece 22 smoother and the quality better. The entire processing steps are simple, improving the processing efficiency of the protective cover and the processing accuracy is high.

[0048] This application also discloses a processing technology for a protective cover processing mold, including the following steps: placing the workpiece 22 in the forming groove 9, using the forming punch 7 to squeeze the workpiece 22 and extend it into the extension hole 91, forming the protrusion 2 and the groove 3, and moving the slider 15 to push the ejector block 10 to eject the formed workpiece 22, i.e., the semi-finished product 23 (see...). Figure 7 It is pushed out from the forming groove 9, and the excess part on the workpiece 22 is removed to obtain a protective cover.

[0049] The implementation principle of the processing technology of a protective cover processing mold in this application embodiment is as follows: The protective cover can be manufactured by cold extrusion molding the groove 3 and the protrusion 2 on the protective cover, and by removing the excess extruded part on the molded workpiece 22. The process is simple, efficient, and the processing accuracy can meet the requirements of the protective cover.

[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A protective cover processing mold, characterized in that: The assembly includes a die (5), a punch (6), and a forming punch (7) mounted on the punch (6). The die (5) has a forming groove (9) for placing a workpiece (22). The forming punch (7) is used to press the workpiece (22) into the forming groove (9). The inner wall of the bottom of the forming groove (9) has an extension hole (91) for the forming punch (7) to extend into. The die (5) also has a stripper block (10) located inside the extension hole (91) and spaced apart from the inner wall of the extension hole (91). The stripper block (10) has an axially openable through-hole. Hole (12), the through hole (12) is for the forming punch (7) to extend into, and the inner wall of the through hole (12) and the forming punch (7) inside the through hole (12) are spaced apart; the ejector block (10) includes an abutment part (101), a connecting part (102), a sliding part (103) and a connecting spring (104), the connecting part (102) is located below the abutment part (101) and is fixedly connected to the abutment part (101), and the connecting part (102) and the abutment part (101) are spliced ​​to form an annular groove (13), the annular groove (13) is arranged around the outer periphery of the connecting part (102), and the annular groove (13) is located in the extension hole (9 1) The sliding part (103) is arranged around the outer periphery of the connecting part (102) and fits the outer periphery of the connecting part (102). The upper end of the sliding part (103) extends into the annular groove (13), and the lower end of the sliding part (103) extends out of the annular groove (13). The sliding part (103) is axially slidably connected to the connecting part (102). The connecting spring (104) is sleeved on the outside of the connecting part (102) and located in the annular groove (13). The connecting spring (104) is located between the abutting part (101) and the sliding part (103). The opposite ends of the connecting spring (104) are respectively connected to the abutting part (101) and the sliding part (103). The sliding part (103) is fixedly connected; a limiting groove (201) is opened on the inner ring wall of the sliding part (103), and a limiting block (20) is fixed on the outer side wall of the connecting part (102). The limiting block (20) slides axially in the limiting groove (201). A slot (2011) is opened on the inner wall of the limiting groove (201) parallel to the sliding direction of the limiting block (20). The slot (2011) is located at the end of the limiting groove (201) near the punch. The slot (2011) is used for the limiting block (20) to be inserted. When the limiting block (20) is in the slot (2011), the inner wall of the bottom of the forming groove (9) and the upper end of the abutment part (101) are separated.

2. The protective cover processing mold according to claim 1, characterized in that: The die (5) includes a die body (51) and a pressure block (52) disposed on the die body (51). The forming groove (9) is disposed on the die body (51). The pressure block (52) is located below the die body (51). A slider (15) is axially slidably connected to the pressure block (52). The slider (15) and the ejector block (10) are fixedly connected. When the slider (15) abuts against the die body (51), the upper end of the ejector block (10) is located in the forming groove (9).

3. The protective cover processing mold according to claim 2, characterized in that: When the forming punch (7) abuts against the inner wall of the bottom of the forming groove (9), the lower end of the forming punch (7) is located in the through hole (12).

4. The protective cover processing mold according to claim 2, characterized in that: The mold body (51) is provided with a guide plate (17), and the guide plate (17) is provided with a guide hole (21). The guide hole (21) corresponds to the forming groove (9), and the forming punch (7) passes through the guide hole (21).

5. The protective cover processing mold according to claim 4, characterized in that: The guide plate (17) includes a plate body (171) and a guide rod (172) provided on the plate body (171). The guide hole (21) is provided on the plate body (171). The guide rod (172) slides axially on the die (5). The pressure block (52) is provided with an elastic element (18). The elastic element (18) abuts against the guide rod (172), so that the plate body (171) abuts against the forming punch (7).

6. The protective cover processing mold according to claim 5, characterized in that: It also includes a punch sleeve (8), which is located on the side of the guide plate (17) near the punch (6) and sleeved on the outside of the forming punch (7). The guide plate (17) abuts against the forming punch (7) by pressing against the punch sleeve (8).

7. The protective cover processing mold according to claim 6, characterized in that: The guide rod (172) is provided with a step (1721), which is located on the side of the mold (51) near the pressure block (52) and is used to abut against the mold (51).

8. The protective cover processing mold according to claim 2, characterized in that: The punch (6) is provided with a pad (19), which is located on the side of the forming punch (7) away from the die (5).

9. A processing method for processing a protective cover using a protective cover processing mold as described in any one of claims 2-8, the protective cover comprising a cover body (1), a through hole (11) being provided on the cover body (1), the through hole (11) axially penetrating the cover body (1), a plurality of protruding strips (2) being fixed circumferentially on the inner wall of the through hole (11), and a plurality of grooves (3) being provided circumferentially on the inner wall of the through hole (11), characterized in that, The process includes the following steps: placing the workpiece (22) in the forming groove (9), using the forming punch (7) to squeeze the workpiece (22) and insert it into the extension hole (91) to form the protrusion (2) and groove (3), moving the slider (15) to push the ejector block (10) to push the formed workpiece (22) out of the forming groove (9), and removing the excess part on the workpiece (22) to obtain the protective cover.

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