Die structure for in-die bending

Abstract

The utility model provides an in-die bending die structure which comprises an upper die and a lower die, the upper die is provided with a slotting tool and a stamping tool, the stamping tool is arranged on the left side of the slotting tool, the lower die sequentially comprises a lower die base, a lower die partition plate and a lower die plate from bottom to top, an installation groove is formed in the lower die plate, a first pressing block is installed on one side in the installation groove, and a second pressing block is installed on the other side in the installation groove. A sliding block assembly is arranged on the right side of the first pressing block, slides in the mounting groove and is elastically connected with the first pressing block, a second pressing block is mounted above the sliding block assembly, the top of the right side of the first pressing block is a first bending part, and a second bending part protruding towards the first pressing block is arranged on the left side of the second pressing block; and the stamping knife is arranged above the position between the first bending part and the second bending part. The device is compact in structure and layout, the second pressing block does transverse movement while the slotting tool is pressed downwards, it is ensured that the turned edge of the edge of a product can be bent and formed at a time, and the production efficiency and quality of the product are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping dies, in particular to an in-die bending die structure. Background Art

[0002] A stamping die is a special process equipment used to process metal or non-metal into parts or semi-finished products in cold stamping. During the stamping process of the shielding shell, due to the needs of the product installation structure, there is a flanged bending part on its side. However, due to the small size of the product and the small flange angle, ordinary bending machines cannot bend it into shape in one go. After bending, manual and other auxiliary tools must be used for fine-tuning to achieve the set bending angle, which leads to low production efficiency and affects the overall assembly efficiency and quality of the product. Utility Model Content

[0003] The utility model aims to provide a mold structure for in-mold bending to solve the technical problems in the background technology.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions:

[0005] A mold structure for in-mold bending, comprising an upper mold and a lower mold, the upper mold is equipped with a plunger and a punch, the punch is on the left side of the plunger, the lower mold is composed of a lower mold base, a lower mold spacer and a lower mold plate from bottom to top, an installation groove is provided in the lower mold plate, a first pressure block is installed on one side of the installation groove, a slider assembly is provided on the right side of the first pressure block, the slider assembly slides in the installation groove, the slider assembly is elastically connected to the first pressure block, a second pressure block is installed above the slider assembly, the second pressure block is plugged and installed with the slider assembly, a slot is provided on the right side of the slider assembly to match the position of the plunger, the top right side of the first pressure block is a first bending portion, the left side of the second pressure block is provided with a second bending portion protruding toward the first pressure block, and the punch is above the first bending portion and the second bending portion.

[0006] The upper die comprises, from top to bottom, an upper die base, an upper die spacer plate, an upper die plate and a stripper plate; the insert knife is mounted on the upper die spacer plate and passes through the stripper plate; the punch knife is mounted in the stripper plate and its bottom end passes through the stripper plate; the bottom of the punch knife is a positioning block of a downwardly protruding structure; the longitudinal cross-section of the positioning block is an inverted conical structure; the tip of the positioning block is located between the first bending portion and the second bending portion.

[0007] The insert knife includes a knife handle and a knife head, the knife head is below the knife handle, the top end of the knife handle is installed with the upper mold spacer, and the knife head is composed of a first limiting part and a second limiting part from bottom to top, the width of the first limiting part is smaller than the width of the second limiting part, the bottom of the first limiting part is provided with an arc surface, and the second limiting part is provided with a first inclined surface on the side close to the slider assembly.

[0008] The slider assembly includes a base and a mounting seat, the mounting seat is fixed above the base, a compression spring is provided between the mounting seat and the first pressure block, the second pressure block is plugged into the top of the mounting seat, the right side of the mounting seat is a slot, and the top of the right side of the mounting seat is provided with a second inclined surface in contact with the first inclined surface.

[0009] A limiting strip is provided at the lower right side of the second pressing block, and a concave limiting groove is provided above the mounting seat. The top of the limiting strip extends to the right end surface of the second pressing block to form a step portion, and the structure of the limiting groove matches the structure of the limiting strip.

[0010] Compared with the prior art, the in-mold bending mold structure of the present application has a compact structural layout. The punch, the first pressure block and the second pressure block cooperate to form forces in three directions to adjust the bending angle of the product side. While the punch is pressing down, the second pressure block moves horizontally to ensure that the edge flange of the product can be bent and formed in one time, effectively improving the production efficiency and quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 : A schematic diagram of the structure of this application;

[0012] Figure 2 : Slider assembly and second pressing block installation structure diagram;

[0013] Figure 3 : A three-dimensional structural diagram of the second pressing block;

[0014] Figure 4 : Schematic diagram of the mounting base structure;

[0015] Figure 5 : Schematic diagram of the insert blade structure;

[0016] Figure 6 : Schematic diagram of the application usage status;

[0017] Figure 7 : Figure 6 A magnified image of point A;

[0018] Figure 8 : Schematic diagram of the deformation state of the product processed in this application. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] Specific embodiment 1: Please refer to Figures 1 to 5 In the embodiment of the utility model, a mold structure for in-mold bending includes an upper mold 1 and a lower mold 8. The upper mold 1 is equipped with a plunger 6 and a punch 7. The punch 7 is on the left side of the plunger 6. The lower mold 8 is composed of a lower mold base 9, a lower mold spacer 10 and a lower mold plate 11 from bottom to top. The lower mold plate 11 is provided with a mounting groove 1101. A first pressing block 12 is installed on one side of the mounting groove 1101. A slider assembly 13 is provided on the right side of the first pressing block 12. The slider assembly 13 slides in the mounting groove 1101. The slider assembly 13 and the first pressing block 12 are elastically connected, a second pressure block 14 is installed above the slider assembly 13, the second pressure block 14 is plugged and installed with the slider assembly 13, a slot 1303 is provided on the right side of the slider assembly 13 to match the position of the inserting knife 6, the top of the right side of the first pressure block 12 is a first bending portion 16011201, and the left side of the second pressure block 14 is provided with a second bending portion 16011401 protruding toward the first pressure block 12, and the punching knife 7 is above the first bending portion 16011201 and the second bending portion 16011401.

[0021] The upper mold 1 comprises, from top to bottom, an upper mold base 2, an upper mold spacer plate 3, an upper mold plate 4 and a stripper plate 5; a plunger 6 is mounted on the upper mold spacer plate 3 and passes through the stripper plate 5; a punching knife 7 is mounted in the stripper plate 5 and its bottom end passes through the stripper plate 5; a positioning block 701 having a downwardly protruding structure at the bottom of the punching knife 7 has a longitudinal cross-section of an inverted conical structure; the tip of the positioning block 701 is positioned between the first bending portion 16011201 and the second bending portion 16011401; the tip structure of the positioning block 701 is against the edge of the bending portion 1601 of the product 16, so that the bending adjustment angle of the product 16 is more accurate.

[0022] The insert knife 6 includes a handle 601 and a knife head 602. The knife head 602 is below the handle 601. The top of the handle 601 is installed with the upper mold spacer 3. The knife head 602 is composed of a first limiting portion 602-1 and a second limiting portion 602-2 from bottom to top. The width of the first limiting portion 602-1 is smaller than the width of the second limiting portion 602-2. The bottom of the first limiting portion 602-1 is provided with an arc surface 602-1-1 to facilitate its sliding into the slot 1303. The second limiting portion 602-2 is provided with a first inclined surface 602-2-1 on one side close to the slider assembly 13. The bottom of the knife head 602 is below the positioning block 701.

[0023] The slider assembly 13 includes a base 1301 and a mounting seat 1302. The mounting seat 1302 is fixed on the top of the base 1301. A compression spring 15 is provided between the mounting seat 1302 and the first pressure block 12. The second pressure block 14 is plugged into the top of the mounting seat 1302. The right side of the mounting seat 1302 is a slot 1303. The top right side of the mounting seat 1302 is provided with a second inclined surface 1302-2 that contacts the first inclined surface 602-2-1. The cooperation between the first inclined surface 602-2-1 and the second inclined surface 1302-2 allows the second pressure block 14 to gradually slide toward the first pressure block 12.

[0024] A limiting strip 1402 is provided at the lower right side of the second pressing block 14, and an inwardly concave limiting groove 1302-1 is provided above the mounting seat 1302. The top of the limiting strip 1402 extends to the right end face of the second pressing block 14 to form a step portion 1403. The structure of the limiting groove 1302-1 matches the structure of the limiting strip 1402. The installation structure of the second pressing block 14 and the mounting seat 1302 is simple and fast, and can be quickly assembled. At the same time, the step portion 1403 structure of the limiting strip 1402 allows it to be firmly fixed in the mounting seat 1302.

[0025] How it works: See Figures 6 to 8 , the upper mold 1 moves downward, and the blade head 602 of the insert knife 6 is first inserted into the slot 1303, pushing the slider assembly 13 to squeeze the compression spring 15 and move toward the first pressure block 12. As the upper mold 1 continues to be pressed downward, the second pressure block 14 also drives the bending portion 1601 of the product 16 to be pressed toward the first pressure block 12. At the same time, the positioning block 701 of the punching knife 7 also rests on the top of the flanging position of the product 16 to prevent the bending portion 1601 of the product 16 from tilting upward. The first pressure block 12, the second pressure block 14 and the punching knife 7 form forces in three directions to process the bending portion 1601 of the product 16.

[0026] Compared with the prior art, the in-mold bending mold structure of the present application has a compact structural layout. The punch, the first pressure block and the second pressure block cooperate to form forces in three directions to adjust the bending angle of the product side. While the punch is pressing down, the second pressure block moves horizontally to ensure that the edge flange of the product can be bent and formed in one time, effectively improving the production efficiency and quality of the product.

[0027] It is obvious to those skilled in the art that the present invention is not limited to the details of the foregoing exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A mold structure for in-mold bending, characterized in that: The invention comprises an upper die and a lower die, wherein the upper die is provided with an inserting knife and a punching knife, the punching knife is on the left side of the inserting knife, and the lower die is composed of a lower die seat, a lower die spacer plate and a lower die plate from bottom to top in sequence, and an installation groove is provided in the lower die plate, a first pressing block is installed on one side of the installation groove, a slider assembly is provided on the right side of the first pressing block, the slider assembly slides in the installation groove, the slider assembly is elastically connected to the first pressing block, a second pressing block is installed above the slider assembly, the second pressing block is plugged and installed with the slider assembly, a slot is provided on the right side of the slider assembly to match the inserting knife position, the top right side of the first pressing block is a first bending portion, a second bending portion protruding toward the first pressing block is provided on the left side of the second pressing block, and the punching knife is above the first bending portion and the second bending portion.

2. The mold structure for in-mold bending according to claim 1, characterized in that: The upper die comprises, from top to bottom, an upper die base, an upper die spacer plate, an upper die plate and a stripper plate; the insert knife is mounted on the upper die spacer plate and passes through the stripper plate; the punch knife is mounted in the stripper plate and its bottom end passes through the stripper plate; the bottom of the punch knife is a positioning block of a downwardly protruding structure; the longitudinal cross-section of the positioning block is an inverted conical structure; the tip of the positioning block is located between the first bending portion and the second bending portion.

3. The mold structure for in-mold bending according to claim 2, characterized in that: The insert knife includes a knife handle and a knife head, the knife head is below the knife handle, the top end of the knife handle is installed with the upper mold spacer, and the knife head is composed of a first limiting part and a second limiting part from bottom to top, the width of the first limiting part is smaller than the width of the second limiting part, the bottom of the first limiting part is provided with an arc surface, and the second limiting part is provided with a first inclined surface on the side close to the slider assembly.

4. The mold structure for in-mold bending according to claim 3, characterized in that: The slider assembly includes a base and a mounting seat, the mounting seat is fixed above the base, a compression spring is provided between the mounting seat and the first pressure block, the second pressure block is plugged into the top of the mounting seat, the right side of the mounting seat is a slot, and the top of the right side of the mounting seat is provided with a second inclined surface in contact with the first inclined surface.

5. The mold structure for in-mold bending according to claim 4, characterized in that: A limiting strip is provided at the lower right side of the second pressing block, and a concave limiting groove is provided above the mounting seat. The top of the limiting strip extends to the right end surface of the second pressing block to form a step portion, and the structure of the limiting groove matches the structure of the limiting strip.

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