Stamping die

Abstract

The utility model relates to a stamping die which comprises an upper die base, a lower die base, an upper die plate, a lower die plate and a punch, a cylindrical inserting portion is formed at the upper end of the punch, an inserting hole matched with the inserting portion and a sliding groove communicated with the inserting hole are formed in the upper die plate, and the sliding groove penetrates through the upper die plate towards the side face of the upper die plate. A slidable clamping sliding block is arranged in the sliding groove, a limiting block is fixedly connected to an end opening of the sliding groove, a clamping sliding rod penetrating through the limiting block is fixedly connected to the clamping sliding block, the clamping sliding rod is sleeved with a clamping spring located between the clamping sliding block and the limiting block, and a clamping ring groove is formed in the circumferential surface of the inserting part; a clamping protrusion matched with the clamping ring groove is formed on the face, facing the inserting hole, of the clamping sliding block, the inserting part is inserted into the inserting hole, the clamping protrusion is clamped into the clamping ring groove under the action of the clamping spring, and fixed connection of the punch and the upper die plate is achieved. According to the stamping die, the punch can be more conveniently disassembled and assembled, and the die is convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a stamping mold. Background Technology

[0002] The punch in a stamping die is used to punch and form the material. To facilitate the replacement of the punch, existing technologies, such as the utility model patent: a stamping die with a quick-change structure (publication number: CN222607734U), disclose a stamping die in which the punch is discharged from the die through a discharge hole opened on the upper die base, and the utility model patent: a stamping die with a replaceable stamping die head (publication number: CN217912495U), disclose a stamping die in which the punch is disassembled and assembled by removing and assembling screws connected to the upper die. In the above two types of stamping dies, the operation of disassembling and assembling the punch must be performed from the upper part of the upper die. However, since the upper die is connected and matched with the press, the space above the upper die will be interfered with by the press, making the operation of disassembling and replacing the punch inconvenient.

[0003] To address the aforementioned problems, this utility model provides improvements. Utility Model Content

[0004] This utility model proposes a stamping die that solves the above-mentioned problems existing in the use of the prior art.

[0005] The technical solution of this utility model is implemented as follows:

[0006] A stamping die includes an upper die base, a lower die base, an upper template, a lower template, and a punch. The upper and lower templates are fixedly connected to the upper and lower die bases, respectively. A cylindrical insertion portion is formed at the upper end of the punch. The upper template has an insertion hole matching the insertion portion and a sliding groove communicating with the insertion hole. The sliding groove extends through the side of the upper template. A slidable locking slider is provided in the sliding groove. A limit block is fixedly connected to the port of the sliding groove. A locking slide rod passing through the limit block is fixedly connected to the locking slider. A locking spring is sleeved on the locking slide rod between the locking slider and the limit block. A locking ring groove is formed on the circumferential surface of the insertion portion. A locking protrusion matching the locking ring groove is formed on the surface of the locking slider facing the insertion hole. The insertion portion is inserted into the insertion hole, and the locking protrusion is locked into the locking ring groove under the action of the locking spring, thereby achieving a fixed connection between the punch and the upper template.

[0007] Preferably, a limiting screw hole is provided on the outer side of the limiting block, the end of the snap-fit ​​slide rod is inserted into the limiting screw hole, and a limiting bolt that can abut against the end of the snap-fit ​​slide rod is screwed into the limiting screw hole.

[0008] Preferably, a limiting snap ring is provided on the portion of the snap-fit ​​slide rod located in the limiting screw hole.

[0009] Preferably, the insertion part is semi-cylindrical, and the snap-fit ​​groove is provided on the arc portion of the circumferential surface of the insertion part.

[0010] Preferably, the snap-fit ​​protrusion is an arc shape that matches the snap-fit ​​ring groove, and when the snap-fit ​​protrusion is snapped into the snap-fit ​​ring groove, the end face of the snap-fit ​​protrusion is in contact with the bottom of the snap-fit ​​ring groove.

[0011] Preferably, the lower inner corner of the snap-fit ​​protrusion is chamfered to form a first guide surface, and the upper corner of the insertion part is chamfered to form a second guide surface.

[0012] Preferably, an ejector spring is fixedly connected to the upper end of the insertion part, a first spring hole is provided on the bottom wall of the insertion hole and extends upward through the upper template, and a second spring hole is provided on the upper mold base and aligned with the first spring hole. When the insertion part is inserted into the insertion hole, the ejector spring is located in the first spring hole and the second spring hole and is in a compressed state.

[0013] Preferably, the upper template is composed of an upper plate, a middle plate and a lower plate that are fastened together by bolts, the sliding groove is disposed on the middle plate, the limiting block is fixedly connected to the middle plate, the first spring hole is disposed on the upper plate, and the insertion hole is composed of three parts disposed on the upper plate, the middle plate and the lower plate respectively and connected together.

[0014] In summary, the beneficial effects of this utility model are as follows: by pulling the snap-fit ​​sliding rod to drive the snap-fit ​​slider, the snap-fit ​​protrusion can be disassembled from the snap-fit ​​ring groove, thus realizing the separation of the punch from the upper template. By inserting the insertion part into the insertion hole, the snap-fit ​​protrusion can be snapped into the snap-fit ​​ring groove under the action of the snap-fit ​​spring, thus realizing the installation of the punch on the upper template. The operation is very convenient. Moreover, the operating surface of pulling the snap-fit ​​sliding rod is located on the side of the upper template, that is, the operator can operate while standing on one side of the mold, which provides a larger operating space, making the disassembly and assembly of the punch more convenient and facilitating the use of the mold. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2This is an exploded view of the present invention;

[0018] Figure 3 This is a cross-sectional schematic diagram of the present invention;

[0019] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0020] Figure 5 This is a schematic diagram of the punch and the snap-fit ​​slider in this utility model.

[0021] In the diagram: 1. Upper mold base; 11. Second spring hole; 2. Lower mold base; 3. Upper template; 31. Insertion hole; 32. Sliding groove; 33. First spring hole; 34. Upper plate; 35. Middle plate; 36. Lower plate; 4. Lower template; 5. Punch; 51. Insertion part; 52. Snap-fit ​​ring groove; 53. Second guide surface; 54. Ejection spring; 6. Snap-fit ​​slider; 61. Snap-fit ​​protrusion; 62. First guide surface; 7. Limiting block; 71. Limiting screw hole; 8. Snap-fit ​​slide rod; 81. Limiting snap ring; 9. Snap-fit ​​spring; 10. Limiting bolt. Detailed Implementation

[0022] The following will refer to the appendix in the embodiments of this utility model. Figure 1-5 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] As shown in the figure, a stamping die includes an upper die base 1, a lower die base 2, an upper template 3, a lower template 4, and a punch 5. The upper template 3 and the lower template 4 are respectively fixedly connected to the upper die base 1 and the lower die base 2. The upper end of the punch 5 has a cylindrical insertion part 51. The upper template 3 has an insertion hole 31 that matches the insertion part 51 and a sliding groove 32 that communicates with the insertion hole 31. The sliding groove 32 passes through the side of the upper template 3. A slidable locking slider 6 is provided in the sliding groove 32. The port of the sliding groove 32 is fixedly connected to... A limiting block 7 is connected to the locking slider 6, and a locking slide rod 8 passing through the limiting block 7 is fixedly connected to the locking slider 6. A locking spring 9 located between the locking slider 6 and the limiting block 7 is sleeved on the locking slide rod 8. A locking ring groove 52 is opened on the circumferential surface of the insertion part 51. A locking protrusion 61 matching the locking ring groove 52 is formed on the surface of the locking slider 6 facing the insertion hole 31. The insertion part 51 is inserted into the insertion hole 31, and the locking protrusion 61 is locked into the locking ring groove 52 under the action of the locking spring 9, so as to realize the fixed connection between the punch 5 and the upper template 3.

[0024] In the above structure, when disassembling the punch 5, the snap-fit ​​slide rod 8 is pulled outward through the portion passing through the limiting block 7. The snap-fit ​​slide rod 8 drives the snap-fit ​​slider 6 to slide away from the insertion hole 31 within the sliding groove 32, causing the snap-fit ​​protrusion 61 to exit the snap-fit ​​ring groove 52. After the snap-fit ​​protrusion 61 has completely exited the snap-fit ​​ring groove 52, the insertion part 51 can slide longitudinally within the insertion hole 31. By holding the punch 5 and pulling the insertion part 51 downward, the insertion part 51 can be removed. Pull the insert part 51 out of the insert hole 31 to separate the punch 5 from the upper template 3. When installing the punch 5, pull the snap-fit ​​slide rod 8 to drive the snap-fit ​​protrusion 61 out of the insert hole 31. Align the insert part 51 with the insert hole 31 and insert it into the insert hole 31. When the insert part 51 abuts against the bottom wall of the insert hole 31, the snap-fit ​​annular groove 52 aligns with the snap-fit ​​protrusion 61. After releasing the snap-fit ​​slide rod 8, the snap-fit ​​slider 6 engages in the snap-fit ​​mechanism. Under the restoring force of the spring 9, it slides towards the snap ring groove 52 in the sliding groove 32, causing the snap protrusion 61 to snap into the snap ring groove 52. The engagement of the snap protrusion 61 and the snap ring groove 52 limits the longitudinal displacement of the insertion part 51 and the upper template 3, thus realizing the installation of the punch 5 on the upper template 3. The detachable punch 5 facilitates the replacement of the punch 5 during mold use. Moreover, when performing the disassembly and assembly of the punch 5, the operating surface of pulling the snap sliding rod 8 is located on the side of the upper template 3, which means that the operator can operate while standing on one side of the mold, providing a larger operating space and making the disassembly and assembly of the punch 5 more convenient and easier to use. The limiting block 7 is fixedly connected to the upper template 3 at the port of the sliding groove 32 by bolts, facilitating the assembly of the limiting block 7 and the snap sliding block 6, snap sliding rod 8 and snap spring 9 in the sliding groove 32.

[0025] Furthermore, based on the above structure, a limiting screw hole 71 is provided on the outer surface of the limiting block 7. The end of the snap-fit ​​slide rod 8 passes through the limiting screw hole 71. A limiting bolt 10 that can abut against the end of the snap-fit ​​slide rod 8 is screwed into the limiting screw hole 71. When the snap-fit ​​protrusion 61 snaps into the snap-fit ​​ring groove 52 to install the punch 5 on the upper template 3, the limiting bolt 10 is screwed into the limiting screw hole 71 and pressed tightly against the end of the snap-fit ​​slide rod 8. The limiting bolt 10 limits the sliding of the snap-fit ​​slide rod 8 on the limiting block 7 and thus limits the sliding of the snap-fit ​​slider 6 in the sliding groove 32, so that the snap-fit ​​protrusion 61 is more stably kept in the snap-fit ​​ring groove 52, thereby strengthening the stability of the punch 5 installed on the upper template 3. When it is necessary to disassemble the punch 5, the limiting bolt 10 is unscrewed from the limiting screw hole 71, and pliers or other tools are inserted into the limiting screw hole 71 to clamp the snap-fit ​​slide rod 8 for operation.

[0026] In addition, based on the above structure, a limiting spring 81 is provided on the portion of the snap-fit ​​slide rod 8 located in the limiting screw hole 71. The limiting spring 81 restricts the sliding stroke of the snap-fit ​​slide rod 8 along with the snap-fit ​​slider 6 towards the insertion hole 31, so that the snap-fit ​​slider 6 will not be over-inserted into the insertion hole 31, reducing the stroke required to pull the snap-fit ​​slide rod 8 to drive the snap-fit ​​protrusion 61 out of the insertion hole 31 when installing the punch 5, thereby facilitating the disassembly and assembly of the punch 5.

[0027] Furthermore, based on the above structure, the insertion part 51 is semi-cylindrical, the snap-fit ​​groove 52 is provided on the arc portion of the circumferential surface of the insertion part 51, and the insertion hole 31 is semi-cylindrical to match the insertion part 51. By setting the insertion part 51 to a semi-cylindrical shape, the insertion part 51 has a plane that abuts against the inner wall of the insertion hole 31 after being inserted into the insertion hole 31, thereby limiting the rotation of the insertion part 51 in the insertion hole 31 and strengthening the stability of the punch 5 after it is installed on the upper template 3.

[0028] Furthermore, based on the above structure, the snap-fit ​​protrusion 61 is arc-shaped and matches the snap-fit ​​ring groove 52. When the snap-fit ​​protrusion 61 is snapped into the snap-fit ​​ring groove 52, the end face of the snap-fit ​​protrusion 61 fits against the bottom of the snap-fit ​​ring groove 52, making the snap-fit ​​fit between the snap-fit ​​protrusion 61 and the snap-fit ​​ring groove 52 tighter, strengthening the limiting effect on the insertion part 51, thereby strengthening the stability of the punch 5 after it is installed on the upper template 3.

[0029] Furthermore, based on the above structure, the lower inner corner of the snap-fit ​​protrusion 61 is chamfered to form a first guide surface 62, and the upper corner of the insertion part 51 is chamfered to form a second guide surface 53. With the limiting effect of the limiting clamp, when the snap-fit ​​sliding rod 8 is released and the insertion part 51 is inserted into the insertion hole 31, the first guide surface 62 and the second guide surface 53 are aligned. During the insertion of the insertion part 51 into the insertion hole 31, the first guide surface 62 and the second guide surface abut against each other, and through their cooperation, the snap-fit ​​protrusion 61 is pushed, causing the snap-fit ​​slider 6 to slide away from the insertion hole 31, allowing the insertion part 51 to be fully inserted into the insertion hole 31 to achieve the installation of the punch 5. This eliminates the need to operate the snap-fit ​​sliding rod 8 when installing the punch 5, further facilitating the installation and removal of the punch 5.

[0030] Furthermore, based on the above structure, an ejector spring 54 is fixedly connected to the upper end of the insertion part 51. A first spring hole 33 is provided on the bottom wall of the insertion hole 31, which passes through the upper template 3. A second spring hole 11 is provided on the upper mold base 1, which is aligned with the first spring hole 33. When the insertion part 51 is inserted into the insertion hole 31, the ejector spring 54 is in a compressed state within the first spring hole 33 and the second spring hole 11. After the insertion part 51 is inserted into the insertion hole 31 to install the punch 5, the ejector spring 54 passes through the first spring hole 33 and the second spring hole 11 and remains within them. When the punch 5 is disassembled and the snap-fit ​​protrusion 61 is pulled out of the snap-fit ​​ring groove 52, the insertion part 51 is pulled out of the insertion hole 31 under the restoring force of the ejector spring 54, thus facilitating the disassembly of the punch 5.

[0031] Furthermore, based on the above structure, the upper template 3 is composed of an upper plate 34, a middle plate 35, and a lower plate 36 that are stacked and fastened together by bolts. The sliding groove 32 is provided on the middle plate 35, the limiting block 7 is fixedly connected to the middle plate 35, the first spring hole 33 is provided on the upper plate 34, and the insertion hole 31 is composed of three parts respectively provided on the upper plate 34, the middle plate 35, and the lower plate 36 that are connected together. The upper template 3 is divided into three parts that are stacked and fastened together by bolts, which makes it easier to process the sliding groove 32 and the insertion hole 31 during mold production, and reduces the difficulty of processing.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A stamping die, comprising an upper die base (1), a lower die base (2), an upper template (3), a lower template (4), and a punch (5), wherein the upper template (3) and the lower template (4) are respectively fixedly connected to the upper die base (1) and the lower die base (2), characterized in that: The upper end of the punch (5) has a cylindrical insertion part (51). The upper template (3) has an insertion hole (31) that matches the insertion part (51) and a sliding groove (32) that communicates with the insertion hole (31). The sliding groove (32) extends through the side of the upper template (3). A slidable snap-fit ​​slider (6) is provided in the sliding groove (32). A limit block (7) is fixedly connected to the port of the sliding groove (32). A snap-fit ​​sliding rod (8) that passes through the limit block (7) is fixedly connected to the snap-fit ​​slider (6). A snap-fit ​​spring (9) is fitted on the snap-fit ​​slider (8) between the snap-fit ​​slider (6) and the limiting block (7). A snap-fit ​​ring groove (52) is provided on the circumferential surface of the insertion part (51). A snap-fit ​​protrusion (61) matching the snap-fit ​​ring groove (52) is formed on the surface of the snap-fit ​​slider (6) facing the insertion hole (31). The insertion part (51) is inserted into the insertion hole (31). The snap-fit ​​protrusion (61) is snapped into the snap-fit ​​ring groove (52) under the action of the snap-fit ​​spring (9), thereby realizing the fixed connection between the punch (5) and the upper template (3).

2. The stamping die according to claim 1, characterized in that: The limiting block (7) has a limiting screw hole (71) on its outer side. The end of the snap-fit ​​slide rod (8) is inserted into the limiting screw hole (71). A limiting bolt (10) that can abut against the end of the snap-fit ​​slide rod (8) is screwed into the limiting screw hole (71).

3. The stamping die according to claim 2, characterized in that: The snap-fit ​​slide bar (8) is provided with a limit snap ring (81) on the part of the limit screw hole (71).

4. The stamping die according to claim 3, characterized in that: The plug part (51) is semi-cylindrical, and the snap-fit ​​groove (52) is provided on the arc portion of the circumferential surface of the plug part (51).

5. The stamping die according to claim 4, characterized in that: The snap-fit ​​protrusion (61) is an arc shape that matches the snap-fit ​​ring groove (52). When the snap-fit ​​protrusion (61) is snapped into the snap-fit ​​ring groove (52), the end face of the snap-fit ​​protrusion (61) is in contact with the bottom of the snap-fit ​​ring groove (52).

6. The stamping die according to claim 5, characterized in that: The lower inner corner of the snap-fit ​​protrusion (61) is chamfered to form a first guide surface (62), and the upper corner of the plug part (51) is chamfered to form a second guide surface (53).

7. The stamping die according to claim 6, characterized in that: The upper end of the plug-in part (51) is fixedly connected to an ejector spring (54). The bottom wall of the plug-in hole (31) is provided with a first spring hole (33) that passes through the upper template (3) upward. The upper mold base (1) is provided with a second spring hole (11) that is aligned with the first spring hole (33). When the plug-in part (51) is inserted into the plug-in hole (31), the ejector spring (54) is located in the first spring hole (33) and the second spring hole (11) and is in a compressed state.

8. The stamping die according to claim 7, characterized in that: The upper template (3) is composed of an upper plate (34), a middle plate (35) and a lower plate (36) connected by bolts. The sliding groove (32) is set on the middle plate (35). The limiting block (7) is fixedly connected to the middle plate (35). The first spring hole (33) is set on the upper plate (34). The insertion hole (31) is composed of three parts respectively set on the upper plate (34), the middle plate (35) and the lower plate (36) connected together.

Images