Side punch die assembly and workpiece sidewall bulge press apparatus using same

Abstract

The utility model discloses a kind of side punch protruding die assembly and workpiece side wall bulge stamping device using it, at least include: positioning sheath, it at least includes positioning column, hollow sliding cavity in positioning column is arranged, and at least one through hole being communicated with hollow sliding cavity is arranged on the side wall of positioning column;Top rod, it includes part and hollow sliding cavity sliding fit's rod body, and at least one limit slot of concave shape being formed on the side wall of rod body;Limit slot and through hole one-to-one correspondence;Limit slot at least includes two recesses of different degrees of recess that distribute along the relative sliding direction of positioning sheath and rod body;Side punch, it is located in limit slot and through hole simultaneously, and side punch is adapted to partially pass through through hole to extend to the outside of positioning column.

Description

Technical Field

[0001] This utility model relates to the field of stamping technology, and in particular to a side punch assembly and a workpiece sidewall punching device using the same. Background Technology

[0002] The principle of stamping embossing process is to use a punch press and a press to place a metal sheet between a punch and a die. By applying pressure, the metal sheet is plastically deformed, thereby forming a raised shape on the sheet. The design of the punch and die determines the shape and size of the embossing.

[0003] For example, the housing of an automotive sensor in automotive parts requires at least one outwardly protruding bulge to be formed on its side wall through side punching. From the perspective of the punch press, the principle of side punching bulges is similar to that of side punching holes, the difference being whether it is necessary to penetrate the side wall of the workpiece. Therefore, theoretically, a punch press capable of forming side punching holes can also be used to realize side punching bulges.

[0004] Based on the above, CN211101079U discloses an apparatus for punching the sidewalls of automotive airbag housings. This apparatus uses inclined grooves corresponding to those in a guide cover and a support column to engage with a side-punching punch. The side-punching punch slides back and forth within the guide cover, and as the guide cover moves up and down relative to the lower die base, the side-punching punch moves along the inclined grooves to perform punching operations on the workpiece sidewalls. Practical use has revealed that while this technical solution can meet the requirements for side-punching of workpieces, it suffers from several drawbacks. Firstly, the design of precisely fitted inclined grooves in the guide cover and support column results in structural complexity and high equipment costs. Secondly, the design of the inclined grooves requires a certain dimensional space for reliable implementation. Therefore, this technical solution is more suitable for workpieces with relatively large internal diameters. For example, the housing of an automotive sensor is small in size, and its internal space cannot accommodate a guide cover with an inclined groove and a side-punching punch. Therefore, the disclosed technology is not applicable to the side-punching requirements of smaller workpieces.

[0005] In summary, for side stamping requirements of small workpieces, it is necessary to design side punch components with simplified structure and small footprint. Utility Model Content

[0006] The primary objective of this invention is to provide a side punch assembly to address the technical problem of meeting the requirements for side punching of small workpieces.

[0007] The second objective of this invention is to provide a workpiece sidewall embossing device to solve the technical problem of meeting the requirements for side embossing of small workpieces.

[0008] The side punch assembly of this utility model is implemented as follows: A side punch assembly includes at least: a positioning sleeve, which includes at least a positioning post, a hollow sliding cavity disposed in the positioning post, and at least one through hole disposed on the side wall of the positioning post and communicating with the hollow sliding cavity. The top rod includes a rod body that partially slides with the hollow sliding cavity, and at least one limiting groove formed in the concave shape on the side wall of the rod body; the limiting groove corresponds one-to-one with the through hole; the limiting groove includes at least two grooves with different degrees of concavity distributed along the relative sliding direction of the positioning sleeve and the rod body; A side punch, which is located in both the limiting groove and the through hole, and the side punch is adapted to extend partially through the through hole to the outside of the positioning post.

[0009] In an optional embodiment of this utility model, the side punch is a spherical structure; and the limiting groove is an arc-shaped groove adapted to the outer surface of the spherical structure.

[0010] In an optional embodiment of this utility model, the inner diameter of the side end of the through hole facing away from the limiting groove is smaller than the ball diameter of the side punch.

[0011] In an optional embodiment of this utility model, the through hole is a frustum-shaped hole with a gradually decreasing inner diameter from the hollow sliding cavity toward the outside of the positioning post.

[0012] In an optional embodiment of this utility model, the limiting groove includes an upper groove and a lower groove sequentially distributed along the relative sliding direction of the positioning sleeve and the rod; the depth of the upper groove is greater than the depth of the lower groove; and When the positioning post slides downward relative to the rod, the positioning post drives the side punch to move downward so that the side punch moves from the upper groove to the lower groove. The side punch is also adapted to move along the through hole perpendicular to the direction of movement of the positioning post so that the side punch can partially extend to the outside of the positioning post.

[0013] The workpiece sidewall convex stamping device of this utility model is implemented as follows: A workpiece sidewall convex stamping device, comprising: The upper mold mechanism includes an upper mold base and an upper ejector for pushing the workpiece, which is disposed on the upper mold base; The lower die mechanism includes a lower die base located below the upper die base, and a side punch assembly disposed on the lower die base and adapted to punch a protrusion on the side wall of the workpiece from the inside of the workpiece; wherein the top of the positioning post is formed with a conforming head adapted to the inner cavity of the workpiece.

[0014] In an optional embodiment of this utility model, a support seat for supporting the workpiece from the bottom end is also sleeved on the outside of the positioning post of the side punch assembly.

[0015] In an optional embodiment of this utility model, the upper mold base is further provided with a push rod protruding from the upper mold base, and the lower mold base is provided with a discharge plate suitable for being pressed by the push rod. The unloading plate is provided with a through groove suitable for the conformal head and the support seat to pass through.

[0016] In an optional embodiment of this utility model, the upper mold mechanism further includes an upper forming die assembly; The upper forming die assembly includes at least one pair of die modules disposed on the outer circumferential side of the upper top part, and at least one pair of guide posts that are movably engaged with the at least one pair of die modules. Each of the recessed modules is provided with a wedge cavity, and each guide post is provided with a wedge head that slides in conjunction with the wedge cavity.

[0017] In an optional embodiment of this invention, each of the concave modules has an inclined limiting surface at the end corner of its end face facing the lower mold mechanism, away from the upper ejector; and The lower mold mechanism further includes at least one pair of lower forming columns disposed on the lower mold base and cooperating with at least one pair of recessed modules one-to-one; each of the lower forming columns has an inclined guide surface adapted to the inclined limiting surface formed at the end corner facing the upper mold mechanism. At least one pair of lower forming posts are located circumferentially outside the side punch assembly, and the inclined guide surface is formed at the side end corner of the lower forming post facing the side punch assembly.

[0018] In an optional embodiment of this utility model, the lower mold mechanism further includes a lower support seat adapted to move synchronously with the positioning sleeve and adapted to abut against the recessed module.

[0019] By adopting the above technical solution, this utility model has the following beneficial effects: The side punch assembly and the workpiece sidewall convex stamping device using it, through the cooperation of the positioning sleeve, the ejector rod, and the side punch, use the limiting groove on the ejector rod and the through hole on the positioning post of the positioning sleeve to match the movement trajectory of the side punch. When the positioning post slides downward relative to the rod body, the positioning post drives the side punch downward so that the side punch moves from the upper groove to the lower groove. At the same time, the side punch is also suitable for moving along the through hole perpendicular to the movement direction of the positioning post, so that the side punch can partially extend to the outside of the positioning post to realize the side punching convex process of the workpiece sidewall. The above-mentioned through hole and limiting groove method can simplify the overall structure of the side punch assembly. On the other hand, the movement trajectory of the side punch is realized by the longitudinal movement of the positioning post relative to the rod body, so the overall range of motion is small, thus it can be applied to the side punching needs of small-sized workpieces. Attached Figure Description

[0020] Figure 1This is a schematic diagram of the upper die mechanism of the workpiece sidewall convex stamping device of this utility model; Figure 2 This is a schematic diagram of the lower die mechanism of the workpiece sidewall convex stamping device of this utility model; Figure 3 This is a schematic diagram of the workpiece side-wall convex embossing device applicable to the present invention for completing the side-punched convex embossing of the workpiece. Figure 4 This is a schematic diagram of the cooperation structure between the upper ejector and the concave module of the upper die mechanism of the workpiece sidewall convex stamping device of this utility model. Figure 5 This is a schematic diagram of the cooperation structure between the positioning sleeve, the lower forming column, and the lower support seat of the lower die mechanism of the workpiece sidewall convex stamping device of this utility model. Figure 6 This is a schematic diagram of the cooperation structure between the side punch and the ejector rod in the lower die mechanism of the workpiece sidewall convex punching device of this utility model. Figure 7 This is a schematic diagram of the upper and lower die mechanisms of the workpiece sidewall convex stamping device of this utility model in an open die state. Figures 8a-8e This is a schematic diagram of the upper and lower die mechanisms of the workpiece sidewall convex stamping device of this utility model, showing a gradually closing state.

[0021] In the diagram: Positioning pin 1, hollow sliding cavity 11, through hole 12, conforming head 13, rod body 21, upper groove 22, lower groove 23, side punch 3, upper top piece 4, adapter head 41, upper pad 51, upper liner 52, upper fixing plate 53, first upper connecting rod 54, push rod 55, lower fixing plate 61, lower pad 62, unloading plate 63, through groove 64, unloading rod 65, support seat 7, recessed module 81, clearance hole 811, inclined wedge cavity 82, guide pin 83, inclined wedge head 84, forming fixing block 85, second upper connecting rod 86, inclined limiting surface 87, lower forming pin 9, inclined guide surface 91, lower support seat 10, base body 20, workpiece 30, fixing piece 40, pad block 50, lower support rod 60. Detailed Implementation

[0022] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0023] Example 1: Please see Figure 2 , 3 As shown in Figures 5 and 6, this embodiment provides a side punch assembly, which includes at least: a positioning sleeve, an ejector pin, and a side punch 3 for use.

[0024] Specifically, the first part is the positioning sleeve, which includes at least a positioning post 1, a hollow sliding cavity 11 disposed in the positioning post 1, and at least one through hole 12 disposed on the side wall of the positioning post 1 and communicating with the hollow sliding cavity 11. The hollow sliding cavity 11 extends along the height direction of the positioning post 1, and an opening communicating with the hollow sliding cavity 11 is provided at the bottom end of the positioning post 1 (it should be noted that in this embodiment, the terms "top" and "bottom" specifically refer to the perspective of the device in its operating state). This embodiment, with reference to the accompanying drawings, illustrates a design with two through holes 12.

[0025] Secondly, there is the top rod, which includes a rod body 21 that partially slides into the hollow sliding cavity 11, and at least one concave limiting groove formed on the side wall of the rod body 21. Here, the rod body 21 is inserted into the hollow sliding cavity 11 through the opening at the bottom end of the positioning post 1, and at least a portion of the rod body 21 is located outside the hollow sliding cavity 11. In conjunction with the design of two through holes 12, two corresponding limiting grooves are designed.

[0026] It should be noted that when the rod 21 and the hollow sliding cavity 11 are assembled in place, the limiting groove and the through hole 12 correspond one-to-one. Furthermore, the limiting groove includes at least two sections with different degrees of indentation distributed along the relative sliding direction of the positioning sleeve and the rod 21. The depth of these grooves gradually decreases from the top to the bottom of the rod 21. Of course, the limiting groove does not need to extend from the top to the bottom of the rod 21. The specific dimensions of the limiting groove along the height of the rod 21 need to be determined in conjunction with the dimensions of the specific workpiece 30; this embodiment does not impose an absolute limitation on this.

[0027] Based on the above, this embodiment, in conjunction with the accompanying drawings, illustrates an optional implementation. The limiting groove includes an upper groove 22 and a lower groove 23 sequentially distributed along the relative sliding direction of the positioning sleeve and the rod 21. The recess depth of the upper groove 22 is greater than the recess depth of the lower groove 23. Here, in order to allow the side punch 3 to slide smoothly between the upper groove 22 and the lower groove 23, a smooth transition is formed between the upper groove 22 and the lower groove 23.

[0028] Furthermore, the side punch 3 is located in both the limiting groove and the through hole 12, and the side punch 3 is adapted to partially extend through the through hole 12 to the outside of the positioning post 1. When the push rod and the hollow sliding cavity 11 are assembled in place and the workpiece 30 is not side punched, part of the side punch 3 is located in the limiting groove and the other part is located in the through hole 12.

[0029] It should be noted that the shape of the specific side punch 3 is determined in conjunction with the shape of the convex bulge that the specific workpiece 30 needs to be side-punched, and this embodiment does not impose an absolute limitation on this. This embodiment, with reference to the accompanying drawings, illustrates the case where the side punch 3 adopts a spherical structure, and the corresponding limiting groove is an arc-shaped groove that adapts to the outer surface of the spherical structure.

[0030] In this case, it is necessary to explain that the inner diameter of the side end of the through hole 12 facing away from the limiting groove is smaller than the ball diameter of the side punch 3, thereby preventing the side punch 3 from rolling out of the positioning post 1 through the through hole 12. Based on this structure, in a specific optional embodiment, the through hole 12 is a frustum-shaped hole with a gradually decreasing inner diameter from the hollow sliding cavity 11 towards the outside of the positioning post 1. This design can improve the smoothness of the side punch 3 rolling in the channel formed between the limiting groove and the through hole 12.

[0031] In summary, for the side punch assembly of this embodiment, the workpiece 30 is sleeved on the outer layer of the positioning post 1. When the positioning post 1 slides downward relative to the rod 21, the positioning post 1 drives the side punch 3 downward so that the side punch 3 moves from the upper groove 22 to the lower groove 23. The side punch 3 is adapted to move along the through hole 12 perpendicular to the movement direction of the positioning post 1, so that the side punch 3 can partially extend to the outside of the positioning post 1 to realize the side punching process of the workpiece 30. The movement trajectory of the side punch 3 is realized by the longitudinal movement of the positioning post 1 relative to the rod 21. Therefore, the overall range of motion is small, and it can be applied to the side punching needs of small-sized workpieces 30.

[0032] Example 2: Please see Figure 1 As shown in Figure 8, based on the side punch assembly of Embodiment 1, this embodiment provides a workpiece sidewall punching device, including: an upper die mechanism and a lower die mechanism located below the upper die mechanism.

[0033] In general, the upper mold mechanism includes an upper mold base and an upper ejector 4 mounted on the upper mold base for pushing the workpiece 30. In this embodiment, the upper mold base includes an upper pad 51, an upper liner 52, and an upper fixing plate 53 arranged sequentially from top to bottom. It is understood that the upper ejector 4 has an adapter head 41 formed at its end facing the workpiece 30, conformally fitting the workpiece 30. The upper ejector 4 slides with the upper liner 52 and the upper fixing plate 53 via, for example, but not limited to, a first upper connecting rod 54. One end of the upper connecting rod passes through the upper fixing plate 53, allowing the adapter head 41 to extend out from the side of the upper fixing plate 53 facing away from the upper liner 52, facilitating the pushing action on the workpiece 30. It is understood that the first upper connecting rod 54 may have an elastic element designed at its end facing away from the upper ejector 4 to meet the reset requirement of the upper ejector after the workpiece 30 has completed the side stamping operation. Secondly, the lower die mechanism includes a lower die base located below the upper die base, and a side punching die assembly of Embodiment 1, which is provided on the lower die base and is suitable for punching a protrusion onto the side wall of the workpiece 30 from the inside of the workpiece 30; wherein the top of the positioning post 1 is formed with a conforming head 13 adapted to the inner cavity of the workpiece 30. In this embodiment, the lower die base includes a lower fixing plate 61 and a lower pad plate 62 arranged sequentially from top to bottom.

[0034] Based on the above, it should be noted that in this embodiment, the positioning sleeve and the lower fixing plate 61 slide together, so that the positioning sleeve slides relative to the lower fixing plate 61 synchronously when it moves relative to the push rod. The end of the push rod extending outside the hollow sliding cavity 11 is fixed in the lower pad 62. Here, the push rod is fixed in the lower pad 62 by, for example, but not limited to, the cooperation between the fixing member 40 and the pad 50.

[0035] Based on the above structure, it should also be noted that the positioning post 1 of the side punch assembly in this embodiment is also sleeved with a support seat 7 for supporting the workpiece 30 from the bottom end of the workpiece 30.

[0036] In addition, the upper mold base is provided with a push rod 55 protruding from the upper mold base, and the lower mold base is provided with a stripper plate 63 suitable for being pressed by the push rod 55; the stripper plate 63 is provided with a through groove 64 suitable for the conformal head 13 and the support seat 7 to pass through. The push rod 55 is in sliding fit with the upper pad plate 51, the upper liner plate 52 and the upper fixed plate 53, and one end of the push rod 55 extends out of the side of the upper fixed plate 53 facing the lower mold mechanism. The stripper plate 63 is connected to the lower die base via the stripper rod 65. The stripper rod 65 slides in conjunction with the lower pad plate 62 and the lower fixed plate 61, with one end of the stripper rod 65 extending from the side of the lower fixed plate 61 facing the upper die mechanism, thus connecting one end of the stripper rod 65 to the stripper plate 63. It can be understood that the end of the stripper rod 65 facing away from the stripper plate 63 can be designed with an elastic element to meet the reset requirement of the workpiece 30 after the side stamping operation. Similarly, the push rod 55 can also be designed with an elastic element at its end facing away from the stripper plate 63 to meet the reset requirement of the workpiece 30 after the side stamping operation.

[0037] For the workpiece sidewall punching device of this embodiment, the through hole 12 combined with the limiting groove can simplify the structure of the overall side punching die assembly. On the other hand, the movement trajectory of the side punch 3 is achieved by the longitudinal movement of the positioning pin 1 relative to the rod 21. Therefore, the overall range of motion is small, and it can be applied to the side punching needs of small workpieces 30.

[0038] Example 3: Please see Figure 1As shown in Figure 8, based on the workpiece sidewall convex stamping device of Embodiment 2, the upper die mechanism of the workpiece sidewall convex stamping device provided in this embodiment further includes an upper forming die assembly. The design of this upper forming die assembly creates a limit on the outer sidewall of the workpiece 30, preventing positional shifts and wobbling of the workpiece 30 during side stamping operations.

[0039] Referring to the accompanying drawings, in one embodiment, the upper forming die assembly includes at least one pair of die modules 81 disposed on the outer periphery of the upper top member, and at least one pair of guide posts 83 that are movably engaged with the at least one pair of die modules 81; each die module 81 is provided with a wedge cavity 82, and each guide post 83 is provided with a wedge head 84 that is slidably engaged with the wedge cavity 82. More specifically, the guide post 83 is fixed in the forming fixing block 85, and the inclined wedge head 84 of the guide post 83 extends out of the side end of the forming fixing block 85 facing the lower mold mechanism. The forming fixing block 85 is fixed in position by, for example, but not limited to, the second upper connecting rod 86. The forming fixing block 85 is fixed in the upper fixing plate 53, and the recessed module 81 is partially housed in the upper fixing plate 53, with the recessed module 81 partially extending out of the side end of the upper fixing block facing the lower mold mechanism. The recessed module 81 and the forming fixing block 85 are in sliding fit, and the relative sliding direction between the recessed module 81 and the forming fixing block 85 is perpendicular to the relative sliding direction between the positioning post 1 and the ejector rod. This allows the recessed module 81 to move relatively closer to and away from the outer wall of the workpiece 30. The inclined wedge head 84 on the guide post 83 and the inclined wedge cavity 82 in the recessed module 81 are used to limit the movement trajectory of the recessed module 81 and improve the accuracy of its movement.

[0040] It should be noted that the recessed module 81 is provided with a clearance hole 811 parallel to the relative sliding direction between the recessed module 81 and the forming fixing block 85. This ensures that when the recessed module 81 is close to the outer wall of the workpiece 30, it does not affect the operation of the side punch 3 punching the embossing of the outer wall of the workpiece 30.

[0041] Based on the above structure, it should also be noted that each concave module 81 has an inclined limiting surface 87 at the end corner of its end face facing the lower die mechanism away from the upper ejector 4. The lower die mechanism also includes at least one pair of lower forming pillars 9 disposed on the lower die base and cooperating with at least one pair of concave modules 81; each lower forming pillar 9 has an inclined guide surface 91 formed at the end corner of its end facing the upper die mechanism that is adapted to the inclined limiting surface 87; at least one pair of lower forming pillars 9 are located on the circumferential outer side of the side punch assembly, and the inclined guide surface 91 is formed at the side end corner of the lower forming pillar 9 facing the side punch assembly.

[0042] This embodiment, in conjunction with the accompanying drawings, uses a pair of concave modules 81 and a pair of lower forming pillars 9 as an example for explanation. Through the cooperation of the inclined guide surface 91 and the inclined limiting surface 87, when the lower forming pillars 9 can form a resisting action on the side end face of the concave module 81 away from the upper top member 4, the pair of concave modules 81 are squeezed by the pair of lower forming pillars 9 and move relatively closer to the workpiece 30.

[0043] Based on the above, the lower mold mechanism of this embodiment also includes a lower support seat 10 adapted to move synchronously with the positioning sleeve and to abut against the recessed module 81. The positioning sleeve also includes a base 20 connected to the positioning post 1, and the circumferential dimension of the base 20 is larger than that of the positioning post 1 so that the base 20 and the positioning post 1 form a T-shape; based on this structure, the lower support seat 10 is connected to the base 20, thereby ensuring that the lower support seat 10 and the support seat 7 do not interfere with each other. It can be understood that the lower forming post 9 is connected to the lower fixing plate 61, and the unloading plate 63 is provided with a clearance channel suitable for the lower forming post 9 and the lower support seat 10 to pass through, so that the design of the lower forming post 9 will not affect the normal use of the unloading plate 63. It should be noted that the support seat 7, the lower support seat 10 and the positioning sleeve in this embodiment can all move synchronously, thereby enabling the three to achieve an integrated process during use. It is understandable that, for the base 20 here, one end of it facing away from the positioning post 1 is connected to the lower support rod 60, and the lower support rod 60 moves synchronously with the movement of the positioning sleeve. Therefore, an elastic element can be designed at the end of the lower support rod 60 facing away from the positioning sleeve to meet the reset requirement of the positioning sleeve after the side stamping operation is completed.

[0044] In summary, the specific stamping process of the workpiece sidewall convex stamping device in this embodiment is as follows: Workpiece 30 is placed on stripper plate 63, and conformal head 13 on positioning post 1 is located in through groove 64 of stripper plate 63. Upper mold mechanism presses down on lower mold mechanism, push rod 55 pushes stripper plate 63 to move workpiece 30 downward, so that workpiece 30 fits on conformal head 13 of positioning post 1; continue pressing down, upper pusher 4 presses down on workpiece 30, so that workpiece 30 can fit tightly on conformal head 13. Continue pressing down, concave module 81 slides relative to upper pusher 4, lower forming post 9 contacts concave module 81, continue to descend, a pair of lower forming posts 9 exert force on a pair of concave modules 81 towards workpiece 30, so that a pair of concave modules 81 gradually approach the outer wall of workpiece 30, until concave module 81 completely fits the outer wall of workpiece 30. Continuing downwards, the concave module 81 contacts the lower support seat 10, causing the workpiece 30, conformal head 13, side punch 3, positioning sleeve, and support seat 7 to move downwards together. During this process, the positioning post 1 drives the side punch 3 downwards so that when the side punch 3 moves from the upper groove 22 to the lower groove 23, the side punch 3 is adapted to move along the through hole 12 perpendicular to the movement direction of the positioning post 1, so that the side punch 3 can partially extend to the outside of the positioning post 1 to realize the side punching processing of the workpiece 30, completing the convex bulge forming. Then, the upper die mechanism moves upwards, and each component performs the opposite movement process to the downward movement of the upper die mechanism. When the stripper plate 63 moves upwards, it drives the workpiece 30, causing the workpiece 30 to disengage from the positioning sleeve, and the side punch 3 resets along the limiting groove. In this way, a complete side punching convex bulge 301 processing process of the workpiece 30 is completed.

[0045] The above specific embodiments further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above are only specific embodiments of this utility model and are not intended to limit this utility model. 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.

[0046] In the description of this utility model, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 of this utility model.

[0047] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0048] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0049] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0050] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

Claims

1. A side punch assembly, characterized in that, At least including: The positioning sleeve includes at least a positioning post (1), a hollow sliding cavity disposed in the positioning post (1), and at least one through hole (12) disposed on the side wall of the positioning post (1) and communicating with the hollow sliding cavity (11). The top rod includes a rod body (21) that partially slides with the hollow sliding cavity (11), and at least one limiting groove formed in the concave shape on the side wall of the rod body (21); the limiting groove corresponds one-to-one with the through hole (12); the limiting groove includes at least two grooves with different degrees of concavity distributed along the relative sliding direction of the positioning sleeve and the rod body (21); Side punch (3), which is located in both the limiting groove and the through hole (12), and the side punch (3) is adapted to extend out to the outside of the positioning post (1) by partially passing through the through hole (12).

2. The side punch assembly according to claim 1, characterized in that, The side punch (3) adopts a spherical structure; and the limiting groove is an arc-shaped groove that adapts to the outer surface of the spherical structure.

3. The side punch assembly according to claim 2, characterized in that, The inner diameter of the side end of the through hole (12) facing away from the limiting groove is smaller than the ball diameter of the side punch (3).

4. The side punch assembly according to claim 2 or 3, characterized in that, The through hole (12) is a frustum-shaped hole with a gradually decreasing inner diameter from the hollow sliding cavity to the outside of the positioning post (1).

5. The side punch assembly according to any one of claims 1 to 2, characterized in that, The limiting groove includes an upper groove and a lower groove sequentially distributed along the relative sliding direction of the positioning sleeve and the rod (21); the depth of the upper groove is greater than the depth of the lower groove; and When the positioning post (1) slides downward relative to the rod (21), the positioning post (1) drives the side punch to move downward so that the side punch (3) moves from the upper groove to the lower groove. The side punch (3) is also adapted to move along the through hole (12) perpendicular to the direction of movement of the positioning post (1) so that the side punch (3) can partially extend to the outside of the positioning post (1).

6. A workpiece sidewall convex stamping device, characterized in that, include: The upper mold mechanism includes an upper mold base and an upper ejector (4) disposed on the upper mold base for pushing the workpiece (30). The lower die mechanism includes a lower die base located below the upper die base, and a side punch assembly as described in any one of claims 1 to 5 disposed on the lower die base and adapted to punch a protrusion on the side wall of the workpiece (30) from the inside of the workpiece (30); wherein the top end of the positioning post (1) is formed with a conforming head (13) adapted to the inner cavity of the workpiece (30).

7. The workpiece sidewall convex stamping device according to claim 6, characterized in that, The outer side of the positioning post (1) of the side punch assembly is also fitted with a support seat (7) for supporting the workpiece (30) from the bottom end of the workpiece (30).

8. The workpiece sidewall convex stamping device according to claim 7, characterized in that, The upper mold base is also provided with a push rod (55) protruding from the upper mold base, and the lower mold base is provided with a stripper plate (63) suitable for being pressed by the push rod (55). The unloading plate (63) is provided with a through groove (64) suitable for the conformal head (13) and the support seat (7) to pass through.

9. The workpiece sidewall convex stamping device according to any one of claims 6 to 8, characterized in that, The upper mold mechanism also includes an upper forming die assembly; The upper forming die assembly includes at least one pair of die modules (81) located on the outer periphery of the upper top part (4), and at least one pair of guide posts (83) that are in one-to-one active cooperation with the at least one pair of die modules (81). Each of the recessed modules (81) is provided with a wedge cavity (82), and each guide post (83) is provided with a wedge head (84) that slides with the wedge cavity (82).

10. The workpiece sidewall convex stamping device according to claim 9, characterized in that, Each of the recessed modules (81) has an inclined limiting surface (87) at the end corner of its end face facing the lower mold mechanism, away from the upper ejector (4); and The lower mold mechanism also includes at least one pair of lower forming columns (9) provided on the lower mold base and cooperating one-to-one with at least one pair of recessed modules (81); each of the lower forming columns (9) has an inclined guide surface (91) adapted to the inclined limiting surface (87) formed at the end corner facing the upper mold mechanism. At least one pair of lower forming posts (9) are located on the circumferential outer side of the side punch assembly, and the inclined guide surface (91) is formed at the side corner of the lower forming post (9) facing the side punch assembly.

11. The workpiece sidewall convex stamping device according to claim 9, characterized in that, The lower mold mechanism also includes a lower support seat (10) adapted to move synchronously with the positioning sleeve and adapted to abut against the recessed module (81).

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