Clamping jaw forming die

Abstract

The utility model provides a clamping jaw forming die. The clamping jaw forming die comprises a first side plate and a second side plate, the second side plate is matched with the first side plate and is opposite to the first side plate, so that a containing cavity and an opening part which are connected with each other are defined by the second side plate and the first side plate; the third side plate is installed in the containing cavity through the opening part, and a side face forming face used for forming the first rear side face of the clamping jaw is arranged on the third side plate; at least one of the first side plate and the second side plate is provided with an inclined face used for forming the ligament adjacent side face of the clamping jaw and / or a boss used for forming an upper groove of the clamping jaw, and therefore the problem that in the prior art, after being produced in a mold, the clamping jaw of the self-tightening drill chuck needs to be machined again is solved.

Description

Technical Field

[0001] This utility model relates to the field of gripper manufacturing technology, and more specifically, to a gripper forming mold. Background Technology

[0002] In the field of self-tightening drill chuck manufacturing, the chuck jaws, as a key component, have always faced severe production challenges. Existing manufacturing processes typically involve multi-step machining, including complex grinding operations using milling machines and grinding machines. This manufacturing method is not only time-consuming and inefficient, but also demands extremely high levels of operator skill. Any minute machining error can lead to unstable jaw performance, affecting the clamping force and accuracy of the self-tightening drill chuck, thus increasing the difficulty of quality control and significantly driving up the cost of the finished product.

[0003] In recent years, powder metallurgy has been introduced as an alternative manufacturing method, which simplifies the production process of grippers by pressing metal powder into shape and then sintering it. However, this method also has its limitations:

[0004] First, the gripper semi-finished products produced using powder metallurgy have a low density, typically around 6.9 g / cm³. 3 Up to 7.4 g / cm 3 This results in insufficient hardness and strength of the grippers. Experiments have verified that a density below 7.5 g / cm³ is insufficient. 3 The chuck's jaws have a hardness that is difficult to reach the required 58HRC or higher, which affects the stability and durability of the drill chuck.

[0005] Secondly, the semi-finished grippers require further machining to achieve the final dimensional accuracy and surface quality. This not only increases production costs, but also makes it difficult to accurately shape complex gripper surface features such as deep grooves, shallow grooves, and sides at a certain angle to the bottom surface during the machining process. This can easily lead to machining defects, further affecting the quality and performance of the grippers. Utility Model Content

[0006] The main purpose of this utility model is to provide a jaw forming mold to solve the problem that the jaws of the self-tightening drill chuck in the prior art need to be machined again after being produced in the mold.

[0007] To achieve the above objectives, according to one aspect of the present invention, a gripper forming mold is provided, comprising: a first side plate; a second side plate, the second side plate cooperating with the first side plate and disposed opposite to the first side plate to jointly form a connected receiving cavity and an opening; a third side plate, the third side plate being installed in the receiving cavity through the opening, the third side plate being provided with a side forming surface for forming a first rear side surface of the gripper; wherein at least one of the first side plate and the second side plate is provided with a bevel for forming a ligament-adjacent side surface of the gripper and / or a boss for forming an upper groove of the gripper.

[0008] Furthermore, a first parting surface is provided on the side of the first side plate closest to the second side plate. The first parting surface includes a first contact surface, a second contact surface, and a third contact surface connected in sequence. The first and third contact surfaces are parallel to each other, and the distance between the first and third contact surfaces is greater than zero. The second contact surface is inclined to the first and third contact surfaces. A second parting surface is provided on the side of the second side plate closest to the first side plate. The second parting surface includes a fourth contact surface, a fifth contact surface, and a sixth contact surface connected in sequence. The fourth and sixth contact surfaces are parallel to each other, and the distance between the fourth and sixth contact surfaces is greater than zero. The fifth contact surface is inclined to the fourth and sixth contact surfaces. The first contact surface is in contact with the fourth contact surface, the second contact surface is in contact with the fifth contact surface, and the third contact surface is in contact with the sixth contact surface.

[0009] Further, a first groove is provided on the first side plate, the first groove being located on the second contact surface and the third contact surface; wherein, a first boss is provided in the first groove, the first boss being located at the bottom of the portion of the first groove located at the third contact surface, the first boss being used to form a first groove of the gripper; and / or the first groove includes a first inclined surface, the first inclined surface being located at the bottom of the portion of the first groove located at the second contact surface, the first inclined surface being used to form a first ligament proximal side of the gripper; and / or the first groove includes a first cavity bottom surface, the first cavity bottom surface being located at the bottom of the portion of the first groove located at the third contact surface, the first cavity bottom surface being used to form a first gripper side of the gripper; and / or the first groove includes a second cavity bottom surface, the second cavity bottom surface being located at the bottom of the portion of the first groove located at the third contact surface, the second cavity bottom surface being used to form a second gripper side of the gripper; and / or the first groove includes a first cavity side surface, the first cavity side surface being located on the side of the portion of the first groove located at the second contact surface close to the first contact surface, the first cavity side surface being used to form a gripper ligament of the gripper; and / or The first groove may include a second cavity side surface, which is disposed on the first side of the first groove and located away from the third side plate, and the second cavity side surface is used to form the top stepped surface of the gripper; and / or the first groove may include a third cavity side surface, which is disposed on the second side of the first groove and located away from the third side plate, and the third cavity side surface is used to form the bottom stepped surface of the gripper; and / or the first groove may include a fourth cavity side surface, which is disposed on the second side of the first groove near the third side plate, and the fourth cavity side surface is used to form the first rear side component of the second rear side surface of the gripper; and / or the first groove may include an eighth cavity side surface, which is disposed on the first side of the first groove near the third side plate, and the eighth cavity side surface is used to form the first top surface component of the gripper top surface of the gripper; and / or a third boss is provided in the first groove, which is disposed at the bottom of the portion of the first groove located at the third contact surface, and the third boss is used to form the third groove of the gripper.

[0010] Further, a second groove is provided on the second side plate, the second groove being located on the sixth contact surface; wherein, a second boss is provided in the second groove, the second boss being located at the bottom of the portion of the second groove located on the sixth contact surface, the second boss being used to form a second groove of the gripper; and / or a third boss is provided in the second groove, the third boss being located at the bottom of the portion of the second groove located on the sixth contact surface, the third boss being used to form a third groove of the gripper; and / or the second groove includes a second inclined surface, the second inclined surface being located at the bottom of the portion of the second groove located on the fifth contact surface, the second inclined surface being used to form a second ligament-side surface of the gripper; and / or the second groove includes a third cavity bottom surface, the third cavity bottom surface being located at the bottom of the portion of the second groove located on the sixth contact surface, the third cavity bottom surface being used to form a third gripper side surface of the gripper; and / or the second groove includes a fourth cavity bottom surface, the fourth cavity bottom surface being located at the bottom of the portion of the second groove located on the sixth contact surface, the fourth cavity bottom surface being used to form a fourth gripper side surface of the gripper; and / or the second groove includes a fourth cavity bottom surface, the fourth cavity bottom surface being located at the bottom of the portion of the second groove located on the sixth contact surface, the fourth cavity bottom surface being used to form a fourth gripper side surface of the gripper; and / or the second groove includes a third ... The second groove includes a fifth cavity side surface, which is disposed on the first side of the second groove and serves to form a second top surface component of the gripper top surface of the gripper; and / or the second groove includes a sixth cavity side surface, which is disposed on the second side of the second groove and serves to form a gripper bottom surface of the gripper; and / or the second groove includes a seventh cavity side surface, which is disposed near the third side plate of the second groove and serves to form a second rear side surface component of the second rear side surface of the gripper; and / or the second groove includes a first cavity side surface, which is disposed on the side of the portion of the second groove located at the second inclined surface near the fourth contact surface and serves to form a gripper ligament of the gripper; and / or the second groove includes a second cavity side surface, which is disposed on the second side of the second groove and serves to form a top step surface of the gripper; and / or the second groove includes a third cavity side surface, which is disposed on the third side of the second groove and serves to form a bottom step surface of the gripper.

[0011] Furthermore, the angle A between the first inclined surface and the first contact surface is an obtuse angle; and / or the first inclined surface is parallel to the second contact surface, and the distance between the first inclined surface and the second contact surface is L1, wherein 0mm≤L1≤0.2mm; and / or the bottom surface of the first cavity is parallel to the third contact surface, and the distance between the bottom surface of the first cavity and the third contact surface is L2, wherein 0mm≤L2≤0.2mm.

[0012] Furthermore, the angle between the extension direction of the second boss and the extension direction of the third boss is an acute angle; and / or the angle between the second inclined surface and the fourth contact surface is an obtuse angle.

[0013] Furthermore, the receiving cavity includes a side plate cavity segment and a gripper cavity segment connected sequentially in a direction away from the opening, a third side plate is located within the side plate cavity segment to form a gripper cavity together with the gripper cavity segment; and / or at least one of the first side plate and the second side plate is provided with an injection hole, the injection hole communicating with the receiving cavity; and / or the side molding surface is a plane or a curved surface; and / or the second side plate and the first side plate together form a plurality of receiving cavities spaced apart.

[0014] Furthermore, a third groove is provided on the third side plate, the side molding surface is the bottom surface of the third groove, and the third groove also includes: a first molding surface, the first molding surface is connected to the first end of the side molding surface, the first molding surface is used to form the third rear side component of the second rear side of the gripper; and / or a second molding surface, the second molding surface is connected to the second end of the side molding surface, the second molding surface is used to form the third top surface component of the gripper top surface of the gripper.

[0015] Furthermore, the gripper forming mold also includes a movable ejector pin, and at least one of the first side plate and the second side plate is provided with the ejector pin.

[0016] Furthermore, the number of push rods is multiple, including: multiple first push rods; multiple first push rod holes are spaced apart on the first side plate, with each first push rod corresponding to a first push rod, and each first push rod can be slidably inserted into the corresponding first push rod hole; and / or multiple second push rod holes are spaced apart on the second side plate, with each second push rod corresponding to a second push rod, and each second push rod can be slidably inserted into the corresponding second push rod hole.

[0017] Applying the technical solution of this utility model, the gripper forming mold of this utility model includes: a first side plate; a second side plate, which cooperates with the first side plate and is disposed opposite to the first side plate to jointly form a connected receiving cavity and an opening; a third side plate, which is installed in the receiving cavity through the opening, and the third side plate is provided with a side forming surface for forming a first rear side surface of the gripper; wherein, at least one of the first side plate and the second side plate is provided with a bevel for forming a ligament-adjacent side surface of the gripper and / or a boss for forming a groove on the gripper. As can be seen, this utility model, by setting a first side plate, a second side plate, and a third side plate, and setting a specific inclined surface and / or boss on at least one of the first and second side plates, and setting a side forming surface on the third side plate, can directly form the ligament-side surface and groove of the gripper during the powder metallurgy forming process. By precisely controlling the size and position of the inclined surface and boss, the forming work of the gripper can be completed in one forming operation, reducing the dependence on machining equipment such as milling machines and grinding machines, avoiding dimensional deviations and surface defects that may occur during subsequent machining, solving the problem that the gripper of the self-tightening drill chuck in the prior art still needs to be machined again after being produced in the mold, improving the quality consistency and reliability of the gripper products, simplifying the production process, reducing production costs, and greatly improving production efficiency. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0019] Figure 1 A perspective view of an embodiment of the gripper forming mold according to the present invention is shown;

[0020] Figure 2 A schematic diagram of the overall structure of the gripper forming mold according to the present invention is shown;

[0021] Figure 3 A schematic diagram of the structure of the first side plate, the second side plate, and the ejector pin of the gripper forming mold according to the present invention is shown.

[0022] Figure 4 A schematic diagram of the structure of the first side plate of the gripper forming mold according to the present invention in one direction is shown;

[0023] Figure 5 A schematic diagram of the structure of the first side plate of the gripper forming mold according to the present invention is shown in another direction;

[0024] Figure 6 It shows Figure 5 A cross-sectional view at point M of the first side panel shown;

[0025] Figure 7 A schematic diagram of the structure of the second side plate of the gripper forming mold according to the present invention in one direction is shown;

[0026] Figure 8 A schematic diagram of the structure of the second side plate of the gripper forming mold according to the present invention in another direction is shown;

[0027] Figure 9 A front view of the second side plate of the gripper forming mold according to the present invention is shown;

[0028] Figure 10 A schematic diagram of the structure of the third side plate of the gripper forming mold according to the present invention is shown;

[0029] Figure 11 A schematic diagram of the gripper structure of the gripper forming mold according to the present invention is shown in the first direction;

[0030] Figure 12 A schematic diagram of the gripper structure of the gripper forming mold according to the present invention in the second direction is shown;

[0031] Figure 13 A schematic diagram of the gripper structure of the gripper forming mold according to the present invention in a third direction is shown;

[0032] Figure 14 It shows Figure 13 A magnified view of part M of the gripper forming mold shown;

[0033] Figure 15 It shows Figure 13 A magnified view of point N in the gripper forming mold shown;

[0034] Figure 16 A schematic diagram of the jaws and ejector pins of the jaw forming mold according to the present invention is shown.

[0035] Figure 17 A schematic diagram showing the positions of the gripper and the first side plate of the gripper forming mold according to the present invention is provided.

[0036] Figure 18 A schematic diagram showing the positions of the gripper and the second side plate of the gripper forming mold according to the present invention is provided.

[0037] Figure 19 A schematic diagram showing the positions of the gripper and the third side plate of the gripper forming mold according to the present invention is provided.

[0038] Figure 20 A schematic diagram showing the positions of the gripper, the first side plate, and the third side plate of the gripper forming mold according to the present invention is provided.

[0039] Figure 21 A schematic diagram showing the positions of the gripper, the second side plate, and the third side plate of the gripper forming mold according to the present invention is shown.

[0040] The above figures include the following reference numerals:

[0041] 110. Receiving cavity; 111. Side plate cavity section; 112. Gripper cavity section; 120. Opening;

[0042] 1. First side plate; 11. First boss; 12. First inclined surface; 13. Bottom surface of the first cavity; 14. Bottom surface of the second cavity; 15. Side surface of the first cavity; 16. Side surface of the second cavity; 17. Side surface of the third cavity; 18. Injection hole; 19. Side surface of the fourth cavity; 101. First contact surface; 102. Second contact surface; 103. Third contact surface; 104. First groove; 10. Side surface of the eighth cavity;

[0043] 2. Second side plate; 21. Second boss; 22. Third boss; 23. Second inclined surface; 24. Bottom surface of the third cavity; 25. Bottom surface of the fourth cavity; 26. Side surface of the fifth cavity; 27. Side surface of the sixth cavity; 28. Push rod hole; 29. ​​Side surface of the seventh cavity; 201. Fourth contact surface; 202. Fifth contact surface; 203. Sixth contact surface; 204. Second groove;

[0044] 3. Third side profile; 31. Side forming surface; 32. First forming surface; 33. Second forming surface; 301. Third groove;

[0045] 4. Top rod;

[0046] 5. Grippers; 51. Gripper ligament; 52. Second ligament side surface; 53. First ligament side surface; 54. First gripper side surface; 55. Third gripper side surface; 56. Second gripper side surface; 57. Fourth gripper side surface; 58. First groove; 59. Second groove; 510. Third groove; 511. Gripper top surface; 5111. First top surface component; 5112. Second top surface component; 5113. Third top surface component; 512. Top surface step surface; 513. Gripper bottom surface; 514. Bottom surface step surface; 515. First rear side surface; 516. Second rear side surface; 5161. First rear side surface component; 5162. Second rear side surface component; 5163. Third rear side surface component. Detailed Implementation

[0047] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0048] like Figures 1 to 21 As shown, the gripper forming mold of this utility model includes: a first side plate 1; a second side plate 2, which cooperates with the first side plate 1 and is disposed opposite to the first side plate 1 to jointly form a connected receiving cavity 110 and an opening 120; a third side plate 3, which is installed in the receiving cavity 110 through the opening 120, and the third side plate 3 is provided with a side forming surface 31 for forming a first rear side surface 515 of the gripper 5; wherein, at least one of the first side plate 1 and the second side plate 2 is provided with a bevel for forming a ligament-adjacent side surface of the gripper 5 and / or a boss for forming an upper groove of the gripper 5. In this way, by setting a first side plate 1, a second side plate 2, and a third side plate 3, and setting specific inclined surfaces and / or bosses on at least one of the first side plate 1 and the second side plate 2, and setting a side forming surface 31 on the third side plate 3, the present invention can directly form the ligament-side surface and groove of the gripper 5 during the powder metallurgy forming process. By precisely controlling the size and position of the inclined surfaces and bosses, the forming work of the gripper 5 can be completed in one forming operation, reducing the dependence on machining equipment such as milling machines and grinding machines, avoiding dimensional deviations and surface defects that may occur during subsequent machining, solving the problem that the gripper of the self-tightening drill chuck in the prior art still needs to be machined again after being produced in the mold, improving the quality consistency and reliability of the gripper products, simplifying the production process, reducing production costs, and greatly improving production efficiency.

[0049] In at least one embodiment of the present invention, the first side plate 1 is fixed, while the second side plate 2 and the third side plate 3 are movably disposed relative to the first side plate 1 to contact or separate from the first side plate 1.

[0050] like Figure 4 As shown, a first parting surface is provided on the side of the first side plate 1 that is close to the second side plate 2. The first parting surface includes a first contact surface 101, a second contact surface 102 and a third contact surface 103 connected in sequence. The first contact surface 101 and the third contact surface 103 are parallel to each other and the distance between the first contact surface 101 and the third contact surface 103 is greater than zero. The second contact surface 102 is inclined to the first contact surface 101 and the third contact surface 103.

[0051] like Figure 6As shown, a second parting surface is provided on the side of the second side plate 2 that is close to the first side plate 1. The second parting surface includes a fourth contact surface 201, a fifth contact surface 202 and a sixth contact surface 203 connected in sequence. The fourth contact surface 201 and the sixth contact surface 203 are parallel to each other and the distance between the fourth contact surface 201 and the sixth contact surface 203 is greater than zero. The fifth contact surface 202 is inclined to the fourth contact surface 201 and the sixth contact surface 203.

[0052] like Figures 1 to 3 As shown, the first contact surface 101 is in contact with the fourth contact surface 201, the second contact surface 102 is in contact with the fifth contact surface 202, and the third contact surface 103 is in contact with the sixth contact surface 203.

[0053] The gripper forming mold of this utility model has a first parting surface and a second parting surface connected in sequence and partially having a specific inclination angle. The first contact surface 101 is in contact with the fourth contact surface 201, the second contact surface 102 is in contact with the fifth contact surface 202, and the third contact surface 103 is in contact with the sixth contact surface 203. This allows the first side plate 1 and the second side plate 2 to have a more stable contact when closed, ensuring the precise positioning of each part of the gripper 5 during the forming process, thereby improving the forming accuracy of the gripper 5.

[0054] In this way, the inclined design of the second contact surface 102 and the fifth contact surface 202 is beneficial to determining the relative position of the first side plate 1 and the second side plate 2 when in contact, so that the first side plate 1 and the second side plate 2 can be separated from the clamps more smoothly after forming, which improves the accuracy of the generated clamps 5 and reduces the demolding difficulties caused by the friction between the clamps 5 and the mold.

[0055] like Figure 4 As shown, a first groove 104 is provided on the first side plate 1, and the first groove 104 is located on the second contact surface 102 and the third contact surface 103.

[0056] like Figure 5 and Figure 11 As shown, a first boss 11 is provided in the first groove 104. The first boss 11 is located at the bottom of the portion of the first groove 104 located at the third contact surface 103. The first boss 11 is used to form the first groove 58 of the gripper 5.

[0057] like Figure 5 and Figure 11 As shown, the first groove 104 includes a first inclined surface 12, which is disposed at the bottom of the portion of the first groove 104 located at the second contact surface 102. The first inclined surface 12 is used to form the first ligament-adjacent side 53 of the gripper 5.

[0058] like Figure 5and Figure 11 As shown, the first groove 104 includes a first cavity bottom surface 13, which is disposed at the bottom of the portion of the first groove 104 located at the third contact surface 103. The first cavity bottom surface 13 is used to form the first gripper side surface 54 of the gripper 5.

[0059] like Figure 5 and Figure 11 As shown, the first groove 104 includes a second cavity bottom surface 14, which is disposed at the bottom of the portion of the first groove 104 located at the third contact surface 103. The second cavity bottom surface 14 is used to form the second gripper side surface 56 of the gripper 5.

[0060] like Figure 5 and Figure 11 As shown, the first groove 104 includes a first cavity side surface 15, which is disposed on the side of the portion of the first groove 104 located at the second contact surface 102 near the first contact surface 101. The first cavity side surface 15 is used to form the gripper ligament 51 of the gripper 5.

[0061] like Figure 5 and Figure 11 As shown, the first groove 104 includes a second cavity side surface 16, which is disposed on the first side of the first groove 104 and located at a position away from the third side plate 3 of the first groove 104. The second cavity side surface 16 is used to form the top step surface 512 of the gripper 5.

[0062] The gripper forming mold of this utility model, by setting the first boss 11, the first inclined surface 12, the first cavity bottom surface 13, the second cavity bottom surface 14, the first cavity side surface 15, the second cavity side surface 16, the third cavity side surface 17, and the fourth cavity side surface 19 in the first groove 104, can directly form the first groove 58, the first ligament adjacent side surface 53, the first gripper side surface 54, the second gripper side surface 56, the gripper ligament 51, the top step surface 512, the bottom step surface 514, and the first part of the second rear side surface 516 of the gripper 5 during the forming process, without the need for additional machining steps, thus simplifying the manufacturing process.

[0063] Furthermore, the structural design of the first groove 104 helps to control the distribution of materials during the molding process, ensuring the material density and strength of parts such as the first groove 58 and the side of the first gripper 54, avoiding the problem of unstable performance of the gripper 5 due to uneven material distribution; by precisely designing each surface and boss in the first groove 104, it can be ensured that every detail of the gripper 5 meets the design requirements, improving molding accuracy, reducing the dimensional deviation and surface defects of the finished product, thereby improving the overall performance of the gripper 5.

[0064] like Figure 5 and Figure 11As shown, the first groove 104 includes a third cavity side surface 17, which is disposed on the second side of the first groove 104 and located at a position away from the third side plate 3 of the first groove 104. The third cavity side surface 17 is used to form the bottom step surface 514 of the gripper 5.

[0065] like Figure 5 and Figure 13 As shown, the first groove 104 includes a fourth cavity side surface 19, which is located near the third side plate 3 and on the second side of the first groove 104. The fourth cavity side surface 19 is used to form the first rear side surface component 5161 of the second rear side surface 516 of the gripper 5.

[0066] like Figure 5 and Figure 13 As shown, the first groove 104 includes an eighth cavity side surface 10, which is located near the third side plate 3 and on the first side of the first groove 104. The eighth cavity side surface 10 is used to form the first top surface component 5111 of the gripper top surface 511 of the gripper 5.

[0067] like Figure 6 As shown, a second groove 204 is provided on the second side plate 2, and the second groove 204 is located on the sixth contact surface 203.

[0068] like Figure 8 , Figure 9 and Figure 12 As shown, a second boss 21 is provided in the second groove 204. The second boss 21 is located at the bottom of the portion of the second groove 204 located at the sixth contact surface 203. The second boss 21 is used to form the second groove 59 of the gripper 5.

[0069] like Figure 8 , Figure 9 and Figure 12 As shown, a third boss 22 is provided in the second groove 204. The third boss 22 is located at the bottom of the portion of the second groove 204 located at the sixth contact surface 203. The third boss 22 is used to form the third groove 510 of the gripper 5.

[0070] In an embodiment of the present invention not shown, the third boss 22 is symmetrically arranged in the first groove 104. The third boss 22 is located at the bottom of the portion of the first groove 104 located at the third contact surface 103. The third boss 22 is used to form the third groove 510 of the gripper 5.

[0071] like Figure 8 and Figure 12As shown, the second groove 204 includes a second inclined surface 23, which is disposed at the bottom of the portion of the second groove 204 located at the sixth contact surface 203. The second inclined surface 23 is used to form the second ligament-adjacent side surface 52 of the gripper 5.

[0072] like Figure 8 and Figure 12 As shown, the second groove 204 includes a third cavity bottom surface 24, which is disposed at the bottom of the portion of the second groove 204 located at the sixth contact surface 203. The third cavity bottom surface 24 is used to form the third gripper side surface 55 of the gripper 5.

[0073] like Figure 8 and Figure 12 As shown, the second groove 204 includes a fourth cavity bottom surface 25, which is disposed at the bottom of the portion of the second groove 204 located at the sixth contact surface 203. The fourth cavity bottom surface 25 is used to form the fourth gripper side surface 57 of the gripper 5.

[0074] like Figure 8 and Figure 12 As shown, the second groove 204 includes a fifth cavity side surface 26, which is disposed on the first side of the second groove 204. The fifth cavity side surface 26 is used to form the second top surface component 5112 of the gripper top surface 511 of the gripper 5.

[0075] like Figure 7 and Figure 10 As shown, the second groove 204 includes a sixth cavity side surface 27, which is disposed on the second side of the second groove 204 and is used to form the gripper bottom surface 513 of the gripper 5.

[0076] like Figure 8 and Figure 13 As shown, the second groove 204 includes a seventh cavity side surface 29, which is located near the third side plate 3 of the second groove 204. The seventh cavity side surface 29 is used to form the second rear side surface component 5162 of the second rear side surface 516 of the gripper 5.

[0077] The second groove 204 of the gripper forming mold of this utility model, by setting the second boss 21 and the third boss 22, can directly form the second groove 59 and the third groove 510 of the gripper 5 during the forming process, avoiding the need for subsequent machining, reducing production complexity and improving production efficiency.

[0078] The second groove 204 of the gripper forming mold of this utility model forms the second ligament side 52, the third gripper side 55 and the fourth gripper side 57 of the gripper 5 by setting the second inclined surface 23, the third cavity bottom surface 24 and the fourth cavity bottom surface 25 respectively. This design ensures the precise forming of the two sides of the gripper 5 and reduces the time for subsequent finishing.

[0079] The second groove 204 of the gripper forming mold of this utility model forms the gripper top surface 511 and gripper bottom surface 513 of the gripper 5 by setting the fifth cavity side 26 and the sixth cavity side 27, so that the flatness of the top and bottom of the gripper 5 can be directly achieved during forming without additional processing steps.

[0080] The second groove 204 of the gripper forming mold of this utility model forms the second part of the second rear side 516 of the gripper 5 by setting the seventh cavity side 29, which ensures the complete forming of the rear side of the gripper 5, improves the forming efficiency and the overall structural stability of the gripper.

[0081] In an embodiment of this utility model (not shown), the first cavity side 15, the second cavity side 16, and the third cavity side 17 are all located in the second groove 204. The first cavity side 15 is disposed on the side of the second groove 204 near the fourth contact surface 201 at the portion located on the second inclined surface 23, and the first cavity side 15 is used to form the gripper ligament 51 of the gripper 5. The second cavity side 16 is disposed on the second side of the second groove 204, and the second cavity side 16 is used to form the top step surface 512 of the gripper 5. The third cavity side 17 is disposed on the third side of the second groove 204, and the third cavity side 17 is used to form the bottom step surface 514 of the gripper 5.

[0082] like Figure 6 As shown, the angle A between the first inclined surface 12 and the first contact surface 101 is an obtuse angle; and / or the first inclined surface 12 is parallel to the second contact surface 102, and the distance between the first inclined surface 12 and the second contact surface 102 is L1, where 0mm≤L1≤0.2mm; and / or the bottom surface 13 of the first cavity is parallel to the third contact surface 103, and the distance between the bottom surface 13 of the first cavity and the third contact surface 103 is L2, where 0mm≤L2≤0.2mm.

[0083] Preferably, the obtuse angle between the first inclined surface 12 and the first contact surface 101 is 120°.

[0084] Specifically, the distance L1 between the first inclined surface 12 and the second contact surface 102 is controlled between 0 mm and 0.2 mm, and the distance L2 between the bottom surface 13 of the first cavity and the third contact surface 103 is also limited to the range of 0 mm to 0.2 mm. This allows the parting line on the gripper 5 to be set close to one side of the gripper 5. This small distance setting ensures that when the gripper forming mold opens and closes, the first side plate 1 can be smoothly separated from the formed gripper 5, reducing the resistance during demolding and preventing damage to the gripper 5 during demolding. This design ensures that the contact and separation between the gripper 5 and the gripper forming mold are precise and controllable during the formation of the gripper 5, which helps to optimize the performance of the gripper 5, such as strength, hardness and toughness, making it more suitable for use.

[0085] Specifically, the angle between the extension direction of the second boss 21 and the extension direction of the third boss 22 is an acute angle; and / or the angle between the second inclined surface 23 and the fourth contact surface 201 is an obtuse angle.

[0086] Optionally, the first boss 11 and the first side plate 1 can be an integral structure or a separate assembly structure.

[0087] Optionally, the second boss 21 and the second side plate 2 can be an integral structure or a separate assembly structure.

[0088] Optionally, the third boss 22 and the second side plate 2 can be an integral structure or a separate assembly structure.

[0089] Preferably, the acute angle between the extending direction of the second boss 21 and the extending direction of the third boss 22 is 70°.

[0090] Preferably, the obtuse angle between the second inclined surface 23 and the fourth contact surface 201 is 120°.

[0091] In this way, the acute angle between the second protrusion 21 and the third protrusion 22 is designed so that the second groove 59 and the third groove 510 of the gripper 5 can be precisely formed according to the preset position and angle, ensuring the positional accuracy of the upper groove on the gripper 5, thereby ensuring the clamping force and stability of the gripper 5.

[0092] Optionally, the acute angle between the second boss 21 and the third boss 22 is 70°.

[0093] In addition, the obtuse angle formed between the second inclined surface 23 and the fourth contact surface 201 allows the second ligament-adjacent side surface 52 of the gripper 5 to be shaped according to a preset position and angle.

[0094] Preferably, the obtuse angle between the second inclined surface 23 and the fourth contact surface 201 is 120°.

[0095] like Figure 3As shown, the receiving cavity 110 includes a side plate cavity section 111 and a gripper cavity section 112 connected sequentially in a direction away from the opening 120. The third side plate 3 is located inside the side plate cavity section 111, so as to form a gripper cavity together with the gripper cavity section 112.

[0096] Optionally, at least one of the first side plate 1 and the second side plate 2 is provided with an injection hole 18, which communicates with the receiving cavity 110.

[0097] like Figure 2 As shown, an injection hole 18 is provided on the first side plate 1. One end of the injection hole 18 is connected to the receiving cavity 110, and the other end of the injection hole 18 extends to the side of the first side plate 1 away from the second side plate 2.

[0098] In this way, the design of the injection hole 18 allows the molding material to be directly injected into the corresponding receiving cavity 110 without the need for a complex material guiding or dispensing system, which simplifies the molding process and improves production efficiency.

[0099] Optionally, the side forming surface 31 can be a plane or a curved surface.

[0100] The side forming surface 31 of the third side plate 3 of the gripper forming mold of this utility model can be a planar or curved surface design, which enhances the flexibility and adaptability of the gripper forming mold and can adapt to the forming needs of different grippers 5. Whether it is a straight gripper or a complex gripper with a curved profile, it can be achieved by adjusting the shape of the side forming surface 31 on the third side plate 3.

[0101] Specifically, the second side plate 2 and the first side plate 1 together form a plurality of spaced-apart cavities 110.

[0102] The gripper forming mold of this utility model can produce multiple grippers 5 at the same time by setting multiple receiving cavities 110, thereby improving production efficiency.

[0103] Preferably, the gripper forming mold of this utility model includes four receiving cavities 110.

[0104] like Figure 10 As shown, a third groove 301 is provided on the third side plate 3, and the side molding surface 31 is the bottom surface of the third groove 301. The third groove 301 also includes a first molding surface 32 and a second molding surface 33.

[0105] like Figure 10 and Figure 13As shown, the first forming surface 32 is connected to the first end of the side forming surface 31, and the first forming surface 32 is used to form the third rear side component 5163 of the second rear side surface 516 of the gripper 5; and / or the second forming surface 33 is connected to the second end of the side forming surface 31, and the second forming surface 33 is used to form the third top surface component 5113 of the gripper top surface 511 of the gripper 5. Specifically, the design of the third groove 301 allows for the forming of complex structures of the gripper 5, such as the third part of the second rear side surface 516 and a part of the gripper top surface 511, achieving precise integrated forming, reducing the need for subsequent machining, not only improving the forming accuracy of the gripper 5, but also reducing production costs and improving production efficiency.

[0106] Optionally, the gripper forming mold further includes a movable push rod 4, and the push rod 4 is provided on at least one of the first side plate 1 and the second side plate 2.

[0107] In an embodiment of the present invention not shown, the gripper forming mold includes a plurality of first ejector pins; a plurality of first ejector pin holes are provided at intervals on the first side plate 1, and the plurality of first ejector pin holes are provided in a one-to-one correspondence with the plurality of first ejector pins, and each first ejector pin can be slidably inserted into the corresponding first ejector pin hole.

[0108] like Figure 9 and Figure 16 As shown, the gripper forming mold also includes a second ejector pin, which is movably installed in the second ejector pin hole 28 on the second side plate 2.

[0109] Specifically, there are multiple second push rods, and multiple second push rod holes 28 are provided at intervals on the second side plate 2. The multiple second push rod holes 28 are provided in a one-to-one correspondence with the multiple second push rods, and each second push rod can be slidably inserted into the corresponding second push rod hole 28.

[0110] In this way, the use of the second ejector pin can significantly simplify the demolding process. The second ejector pin, guided by the second ejector pin hole 28, can accurately apply force from the second side plate 2 to the clamping claw 5, helping the clamping claw 5 to smoothly disengage from the second side plate 2 after molding, avoiding damage to the clamping claw 5 during demolding and improving the yield.

[0111] Specifically, the spaced arrangement of multiple second ejector pin holes 28 allows each second ejector pin to be evenly distributed at various positions on the second side plate of the clamping claw 5, thereby applying a more uniform force to the clamping claw 5 during demolding, reducing clamping claw defects caused by excessive or insufficient local demolding force, and improving the quality of the finished product.

[0112] The complex structural design of the gripper forming mold of this utility model is not only suitable for powder metallurgy processes, but also adaptable to other forming technologies, such as metal injection molding and injection molding, which enhances the flexibility and adaptability of the gripper forming mold and is suitable for different materials and forming requirements.

[0113] The mold of this utility model can ensure that the hardness and strength of the generated jaws meet the requirements for use, improve the stability and durability of the drill chuck, and at the same time reduce the performance problems caused by insufficient material density and hardness, ensuring high-precision forming of the key parts of the jaws.

[0114] One embodiment of the gripper 5 used in the gripper forming mold of this utility model specifically includes:

[0115] (1) The clamping ligament 51, the second ligament proximal side 52 and the first ligament proximal side 53 are arranged at a certain angle. The second ligament proximal side 52 and the first ligament proximal side 53 intersect on one side to form the clamping ligament 51. The other side of the second ligament proximal side 52 and the first ligament proximal side 53 are respectively connected to two parallel first clamping side 54 and third clamping side 55.

[0116] (2) First rear side 515 and second rear side 516. The first rear side 515 is located above the second rear side 516. The opposite sides of the first rear side 515 and the opposite sides of the second rear side 516 are connected to the first claw side 54 and the third claw side 55 respectively through the second claw side 56 and the fourth claw side 57. The second claw side 56 and the fourth claw side 57 are respectively set higher than the first claw side 54 and the third claw side 55. The first groove 58 and the second groove 59 are respectively inclinedly provided on the first claw side 54 and the third claw side 55. The first groove 58 and the second groove 59 are parallel to each other and are arranged opposite to each other. The third claw side 55 is also provided with a third groove 510 that communicates with the second groove 59 and is located at the lower end of the second groove 59.

[0117] (3) The top surface 511 and the bottom surface 513 of the gripper are parallel to each other and perpendicular to the gripper ligament 51. At least a portion of the top surface 511 of the gripper is connected to each side of the gripper 5 through the top step surface 512, and at least a portion of the bottom surface 513 of the gripper is connected to each side of the gripper 5 through the bottom step surface 514.

[0118] Optionally, the gripper ligament 51 can be a line or a surface; when the gripper ligament 51 is a line (not shown), it can be formed by the first side plate 1 and the second side plate 2 together; when the gripper ligament 51 is a surface (e.g. Figures 1 to 16 As shown, it can be formed from one of the first side plate 1 and the second side plate 2.

[0119] In another embodiment of the gripper 5 to which the gripper forming mold of this utility model is applied, a third groove 510 is also provided on the side 54 of the first gripper.

[0120] Specifically, the forming methods of the two side surfaces 511 (top surface of the gripper), 513 (bottom surface of the gripper), 52 (side surface of the second ligament), and 53 (side surface of the first ligament) are determined by different side plates depending on the parting line. The parting lines of the gripper 5 are mainly of the following two types:

[0121] (1) First type of parting line (not shown): The parting lines of the top surface 511 and bottom surface 513 of the gripper, the second ligament side surface 52 and the first ligament side surface 53 are on the geometric symmetry center line of each surface.

[0122] (2) The second type of fractal line (such as...) Figures 1 to 16 (As shown): The parting lines on the top surface 511 and bottom surface 513 of the gripper are located near the edges of the same side, such as the first ligament side surface 53 and the first gripper side surface 54, or the second ligament side surface 52 and the third gripper side surface 55.

[0123] The usage process of the gripper forming mold of this utility model is as follows:

[0124] (1) Install the gripper molding mold onto the injection molding machine. The first side plate 1, the second side plate 2 and the third side plate 3 are connected by shafts and bushings between the plates to ensure the mold closing accuracy.

[0125] (2) After mold closing, the preheated iron-based powder mixture is injected into the cavity through injection hole 18 under a certain pressure, so that the blank density of the formed gripper 5 reaches 7.5 g / cm³. 3 and above;

[0126] (3) After pressure holding and cooling, the clamping blank of the clamping claw 5 is formed. The second side plate 2 and the third side plate 3 are opened, and the clamping blank of the clamping claw 5 is removed from the cavity by the push rod 4.

[0127] (4) The pressed blank of the clamp 5 is sintered, heat-treated and polished to finally obtain the finished product of the clamp 5.

[0128] This eliminates the need for further machining, improving production efficiency and saving costs.

[0129] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0130] The gripper forming mold of this utility model includes: a first side plate 1; a second side plate 2, which cooperates with the first side plate 1 and is disposed opposite to the first side plate 1 to jointly form a connected receiving cavity 110 and an opening 120; a third side plate 3, which is installed in the receiving cavity 110 through the opening 120, and the third side plate 3 is provided with a side forming surface 31 for forming a first rear side surface 515 of the gripper 5; wherein, at least one of the first side plate 1 and the second side plate 2 is provided with a bevel for forming a ligament-adjacent side surface of the gripper 5 and / or a boss for forming an upper groove of the gripper 5. As can be seen, by setting a first side plate 1, a second side plate 2, and a third side plate 3, and setting specific inclined surfaces and / or bosses on at least one of the first side plate 1 and the second side plate 2, and setting a side forming surface 31 on the third side plate 3, the present invention can directly form the ligament-side surface and groove of the gripper 5 during the powder metallurgy forming process. By precisely controlling the size and position of the inclined surfaces and bosses, the forming work of the gripper 5 can be completed in one forming operation, reducing the dependence on machining equipment such as milling machines and grinding machines, avoiding dimensional deviations and surface defects that may occur during subsequent machining, solving the problem that the gripper of the self-tightening drill chuck in the prior art still needs to be machined again after being produced in the mold, improving the quality consistency and reliability of the gripper products, simplifying the production process, reducing production costs, and greatly improving production efficiency.

[0131] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0132] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0133] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0134] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0135] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0136] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A gripper forming mold, characterized in that, include: First side plate (1); The second side plate (2) cooperates with the first side plate (1) and is disposed opposite to the first side plate (1) to jointly form a connected receiving cavity (110) and an opening (120); The third side plate (3) is installed in the receiving cavity (110) through the opening (120). The third side plate (3) is provided with a side forming surface (31) for forming the first rear side surface (515) of the gripper (5). At least one of the first side plate (1) and the second side plate (2) is provided with a bevel for forming the ligament-adjacent side of the gripper (5) and / or a boss for forming a groove on the gripper (5).

2. The gripper forming mold according to claim 1, characterized in that, A first parting surface is provided on the side of the first side plate (1) near the second side plate (2). The first parting surface includes a first contact surface (101), a second contact surface (102), and a third contact surface (103) connected in sequence. The first contact surface (101) and the third contact surface (103) are parallel to each other. The distance between the first contact surface (101) and the third contact surface (103) is greater than zero. The second contact surface (102) is inclined to the first contact surface (101) and the third contact surface (103). The second side plate (2) is provided with a second parting surface on the side near the first side plate (1). The second parting surface includes a fourth contact surface (201), a fifth contact surface (202), and a sixth contact surface (203) connected in sequence. The fourth contact surface (201) and the sixth contact surface (203) are parallel to each other. The distance between the fourth contact surface (201) and the sixth contact surface (203) is greater than zero. The fifth contact surface (202) is inclined to the fourth contact surface (201) and the sixth contact surface (203). The first contact surface (101) is in contact with the fourth contact surface (201), the second contact surface (102) is in contact with the fifth contact surface (202), and the third contact surface (103) is in contact with the sixth contact surface (203).

3. The gripper forming mold according to claim 2, characterized in that, A first groove (104) is provided on the first side plate (1), and the first groove (104) is located on the second contact surface (102) and the third contact surface (103); wherein, A first boss (11) is provided inside the first groove (104). The first boss (11) is located at the bottom of the portion of the first groove (104) located at the third contact surface (103). The first boss (11) is used to form the first groove (58) of the gripper (5); and / or The first groove (104) includes a first inclined surface (12) disposed at the bottom of the portion of the first groove (104) located at the second contact surface (102), the first inclined surface (12) serving to form the first ligamentous proximal side (53) of the gripper (5); and / or The first groove (104) includes a first cavity bottom surface (13), which is disposed at the bottom of the portion of the first groove (104) located at the third contact surface (103), and the first cavity bottom surface (13) is used to form the first gripper side surface (54) of the gripper (5); and / or The first groove (104) includes a second cavity bottom surface (14), which is disposed at the bottom of the portion of the first groove (104) located at the third contact surface (103), and the second cavity bottom surface (14) is used to form the second gripper side surface (56) of the gripper (5); and / or The first groove (104) includes a first cavity side surface (15), which is disposed on the side of the first groove (104) near the first contact surface (101) at the portion located at the second contact surface (102). The first cavity side surface (15) is used to form the gripper ligament (51) of the gripper (5); and / or The first groove (104) includes a second cavity side surface (16), which is disposed on a first side of the first groove (104) and located on the first groove (104) away from the third side plate (3). The second cavity side surface (16) is used to form the top step surface (512) of the gripper (5); and / or The first groove (104) includes a third cavity side surface (17), which is disposed on the second side of the first groove (104) and located on the first groove (104) away from the third side profile (3). The third cavity side surface (17) is used to form the bottom step surface (514) of the gripper (5); and / or The first groove (104) includes a fourth cavity side surface (19), which is disposed on the first groove (104) near the third side plate (3) and located on the second side of the first groove (104). The fourth cavity side surface (19) is used to form the first rear side surface component (5161) of the second rear side surface (516) of the gripper (5); and / or The first groove (104) includes an eighth cavity side surface (10), which is disposed on the first side of the first groove (104) near the third side plate (3) and located on the first side of the first groove (104). The eighth cavity side surface (10) is used to form the first top surface component (5111) of the gripper top surface (511) of the gripper (5); and / or A third boss (22) is provided in the first groove (104). The third boss (22) is located at the bottom of the portion of the first groove (104) located at the third contact surface (103). The third boss (22) is used to form the third groove (510) of the gripper (5).

4. The gripper forming mold according to claim 2, characterized in that, A second groove (204) is provided on the second side plate (2), and the second groove (204) is located on the sixth contact surface (203); wherein, A second boss (21) is provided inside the second groove (204). The second boss (21) is located at the bottom of the portion of the second groove (204) located at the sixth contact surface (203). The second boss (21) is used to form the second groove (59) of the gripper (5); and / or A third boss (22) is provided inside the second groove (204). The third boss (22) is located at the bottom of the portion of the second groove (204) located at the sixth contact surface (203). The third boss (22) is used to form the third groove (510) of the gripper (5); and / or The second groove (204) includes a second inclined surface (23) disposed at the bottom of the portion of the second groove (204) located at the sixth contact surface (203), the second inclined surface (23) serving to form the second ligament proximal side (52) of the gripper (5); and / or The second groove (204) includes a third cavity bottom surface (24), which is disposed at the bottom of the portion of the second groove (204) located at the sixth contact surface (203), and the third cavity bottom surface (24) is used to form the third gripper side surface (55) of the gripper (5); and / or The second groove (204) includes a fourth cavity bottom surface (25), which is disposed at the bottom of the portion of the second groove (204) located at the sixth contact surface (203), and the fourth cavity bottom surface (25) is used to form the fourth gripper side surface (57) of the gripper (5); and / or The second groove (204) includes a fifth cavity side surface (26), which is disposed on a first side of the second groove (204) and serves to form a second top surface component (5112) of the gripper top surface (511) of the gripper (5); and / or The second groove (204) includes a sixth cavity side surface (27), which is disposed on the second side of the second groove (204) and is used to form the gripper bottom surface (513) of the gripper (5); and / or The second groove (204) includes a seventh cavity side surface (29), which is disposed on the second groove (204) near the third side plate (3). The seventh cavity side surface (29) is used to form the second rear side surface component (5162) of the second rear side surface (516) of the gripper (5); and / or The second groove (204) includes a first cavity side surface (15), which is disposed on the side of the second groove (204) near the fourth contact surface (201) at the portion located on the second inclined surface (23). The first cavity side surface (15) is used to form the gripper ligament (51) of the gripper (5); and / or The second groove (204) includes a second cavity side surface (16), which is disposed on a second side of the second groove (204) and is used to form the top step surface (512) of the gripper (5); and / or The second groove (204) includes a third cavity side surface (17), which is disposed on the third side of the second groove (204) and is used to form the bottom step surface (514) of the gripper (5).

5. The gripper forming mold according to claim 3, characterized in that, The angle A between the first inclined surface (12) and the first contact surface (101) is an obtuse angle; and / or The first inclined surface (12) is parallel to the second contact surface (102), and the distance between the first inclined surface (12) and the second contact surface (102) is L1, wherein 0 mm ≤ L1 ≤ 0.2 mm; and / or The bottom surface (13) of the first cavity is parallel to the third contact surface (103), and the distance between the bottom surface (13) of the first cavity and the third contact surface (103) is L2, wherein 0mm≤L2≤0.2mm.

6. The gripper forming mold according to claim 4, characterized in that, The angle between the extending direction of the second boss (21) and the extending direction of the third boss (22) is an acute angle; and / or The angle between the second inclined surface (23) and the fourth contact surface (201) is an obtuse angle.

7. The gripper forming mold according to claim 1, characterized in that, The receiving cavity (110) includes a side plate cavity segment (111) and a gripper cavity segment (112) connected sequentially in a direction away from the opening (120), the third side plate (3) being located within the side plate cavity segment (111) to form a gripper cavity together with the gripper cavity segment (112); and / or At least one of the first side plate (1) and the second side plate (2) is provided with an injection hole (18), the injection hole (18) communicating with the receiving cavity (110); and / or The side molding surface (31) is a plane or a curved surface; and / or The second side plate (2) and the first side plate (1) together form a plurality of spaced-apart cavities (110).

8. The gripper forming mold according to any one of claims 1 to 7, characterized in that, The third side plate (3) is provided with a third groove (301), the side molding surface (31) is the bottom surface of the third groove (301), and the third groove (301) further includes: A first molding surface (32) is connected to a first end of the side molding surface (31), and the first molding surface (32) is used to form a third rear side component (5163) of the second rear side surface (516) of the gripper (5); and / or The second molding surface (33) is connected to the second end of the side molding surface (31), and the second molding surface (33) is used to form the third top surface component (5113) of the gripper top surface (511) of the gripper (5).

9. The gripper forming mold according to any one of claims 1 to 7, characterized in that, The gripper forming mold also includes a movable push rod (4), and the push rod (4) is provided on at least one of the first side plate (1) and the second side plate (2).

10. The gripper forming mold according to claim 9, characterized in that, The number of the push rods (4) is multiple, and the multiple push rods (4) include: Multiple first push rods; multiple first push rod holes are spaced apart on the first side plate (1), and the multiple first push rod holes are arranged one-to-one with the multiple first push rods, and each first push rod can be slidably inserted into the corresponding first push rod hole; and / or Multiple second push rods; multiple second push rod holes (28) are provided at intervals on the second side plate (2), and the multiple second push rod holes (28) are provided one-to-one with the multiple second push rods, and each second push rod can be slidably inserted into the corresponding second push rod hole (28).

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