Thick plate high-precision punching size guaranteeing structure

Abstract

The utility model provides a thick plate high-precision punching size guaranteeing structure. The thick plate high-precision punching size guaranteeing structure comprises an upper die assembly and a lower die assembly arranged under the upper die assembly. A stripper plate insert core is installed at the end, close to the lower die assembly, of the upper die assembly, and a first inclined face is arranged on the side, close to the product working procedure piece, of the stripper plate insert core. A side sliding block is arranged in the lower die assembly and corresponds to the stripper plate insert core, and the side sliding block is located between the stripper plate insert core and the product working procedure piece. When the upper die assembly moves towards the lower die assembly, the first inclined face makes contact with the second inclined face, and the side sliding block is pushed by the stripper plate insert core to move and press the side face of a product. According to the utility model, the stripper plate insert and the side sliding block are utilized to realize the effect of laterally pressing and positioning a product workpiece from the side surface, a thick steel plate is effectively and reliably positioned, the size from the center of a hole to the edge of the product workpiece during punching can be ensured, the positioning is automatically recovered after punching is finished, a part is conveniently taken out after punching is finished, a conical hole is avoided, and the production efficiency is improved. And the punching quality is effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of machine tool punching, in particular to the technical field of part side pressure positioning, and specifically is a high-precision punching size assurance structure for thick plates. Background Art

[0002] At present, the processing method for holes in thick steel plates is to use the method of drilling on CNC machine tools. In terms of technology, the product is first positioned on the machine tool, and then each hole is processed step by step. However, after long-term use, it is found that the processing efficiency is low. In addition, during processing, the thick steel plate is not firmly fixed when clamped, and the clamping force is uneven due to the thick steel plate, which will cause the workpiece to vibrate or deviate during the drilling process, and the inner hole is prone to form a taper, resulting in poor hole accuracy and finish. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a high-precision punching size assurance structure for thick plates to solve the difficulties of the prior art.

[0004] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides a high-precision punching size assurance structure for thick plates, comprising an upper die assembly and a lower die assembly arranged directly below the upper die assembly;

[0005] A stripper plate insert 9 is installed at one end of the upper mold assembly close to the lower mold assembly, and a first inclined surface 25 is provided on one side of the stripper plate insert 9 close to the product process part 24;

[0006] A side slider 14 is provided in the lower mold assembly corresponding to the stripper plate inlet 9, and the side slider 14 is provided between the stripper plate inlet 9 and the product process part 24, and a second inclined surface 26 is provided on the top of the side slider 14 close to the stripper plate inlet 9;

[0007] When the upper mold assembly moves toward the lower mold assembly, the first inclined surface 25 contacts the second inclined surface 26 , and the side slide block 14 moves toward the product process part 24 under the push of the stripper plate insert 9 and presses the side surface of the product process part 24 .

[0008] According to the preferred solution, the upper die assembly is provided with an upper die seat 1, an upper pad 4, an upper clamping plate 5 and a stripping plate 8 in sequence along the direction close to the lower die assembly;

[0009] The upper die base 1 is provided with a contour sleeve 2 and a nitrogen spring 3;

[0010] An upper clamping plate insert 6 is installed in the upper clamping plate 5, and a punching punch 7 is installed in the upper clamping plate insert 6;

[0011] A stripper plate insert 9 is installed on the stripper plate 8, and the bottom of the stripper plate insert 9 extends toward the direction of the lower mold assembly.

[0012] According to a preferred embodiment, the bottom of the nitrogen spring 3 is connected to the stripping plate 8 , and a plurality of nitrogen springs 3 are arranged on the stripping plate 8 .

[0013] According to the preferred solution, the lower mold assembly is provided with a lower mold plate 10, a lower pad 17, a lower mold base 18 and a lower pad 19 in sequence along the direction close to the upper mold assembly;

[0014] A lower die insert 12 is installed in the lower die plate 10 at a position corresponding to the punching punch 7, and a product process part 24 is placed on the lower die insert 12. Side sliders 14 and outer tube positions 11 are also installed on the lower die plate 10 on both sides of the lower die insert 12.

[0015] According to the preferred embodiment, a plurality of lower die inserts 12 for placing product process parts 24 are arranged in the lower die assembly, and the stripping plate insert 9 and the outer tube position 11 are arranged corresponding to the number of punching punches 7, and a side pressure structure is configured for each product process part 24 to be processed.

[0016] According to the preferred embodiment, the side of the stripper plate inlet 9 close to the product process part 24 is provided with a first inclined surface 25 and a first vertical surface 27 from the bottom upward;

[0017] The side of the side slide block 14 away from the product process part 24 is provided with a second inclined surface 26 and a second vertical surface 28 from the top downward;

[0018] When the upper mold assembly moves toward the lower mold assembly, the first inclined surface 25 and the second inclined surface 26 first contact and then move tangentially to push the side slider 14 toward the product process part 24, and then the first vertical surface 27 and the second vertical surface 28 contact and move up and down.

[0019] According to a preferred embodiment, one end of the side sliding block 14 away from the product process part 24 is also horizontally connected to a discharge screw 15 , and a spring 16 is also sleeved on the end of the discharge screw 15 located outside the lower template 10 .

[0020] According to a preferred embodiment, two ends of the spring 16 are respectively disposed between the screw head of the unloading screw 15 and the side wall of the lower template 10 .

[0021] According to the preferred embodiment, an inner limit 13 is installed on the side of the lower template 10, and the top of the inner limit 13 protrudes from the lower template 10;

[0022] When the stripping plate 8 reaches the bottom dead center, the top of the inner limit 13 abuts against the bottom of the stripping plate 8 .

[0023] According to the preferred embodiment, an inner guide post 20 is installed in the upper clamping plate 5, and the inner guide post 20 passes through the stripper plate 8 and the lower template 10 in sequence during the movement toward the lower mold assembly. An upper inner guide sleeve 21 and a lower inner guide sleeve 22 are respectively provided in the stripper plate 8 and the lower template 10 corresponding to the movement of the inner guide post 20;

[0024] An inner guide sleeve cushion block 23 is also installed at the bottom of the lower inner guide sleeve 22 in the lower template 10 .

[0025] The utility model utilizes the stripping plate insert and the side sliding block to realize the effect of side pressure positioning of the product process parts from the side. It is effective and reliable for positioning the thick steel plate, can ensure the size from the center of the hole to the edge of the product process part when punching, and the positioning automatically recovers after the punching is completed. It is easy to take out the parts after the punching is completed, and the occurrence of tapered holes is avoided, which effectively improves the punching quality.

[0026] The best embodiment of the present invention will be described in more detail below in conjunction with the accompanying drawings so that the features and advantages of the present invention can be easily understood. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The display is a schematic diagram of the structure of the utility model;

[0028] Figure 2 Shown is a top view of the utility model;

[0029] Figure 3 It shows an enlarged schematic diagram of the local structure of the stripper plate inlet and the side slider in the utility model;

[0030] Description of symbols

[0031] 1. Upper die seat; 2. Equal height sleeve; 3. Nitrogen spring; 4. Upper pad; 5. Upper clamping plate; 6. Upper clamping plate insert; 7. Punching punch; 8. Stripper plate; 9. Stripper plate insert; 10. Lower template; 11. Outer tube position; 12. Lower die insert; 13. Inner limiter; 14. Side slide block; 15. Unloading screw; 16. Spring; 17. Lower pad; 18. Lower die seat; 19. Lower pad; 20. Inner guide column; 21. Upper inner guide sleeve; 22. Lower inner guide sleeve; 23. Guide sleeve spacer; 24. Product process parts; 25. First inclined plane; 26. Second inclined plane; 27. First vertical plane; 28. Second vertical plane. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the technical solution of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described in conjunction with the drawings of the specific embodiments of the utility model. The same figure marks in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the described embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Compared with the embodiments shown in the drawings, feasible implementations within the scope of protection of the present invention may have fewer components, other components not shown in the drawings, different components, differently arranged components, or differently connected components, etc. In addition, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0034] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by persons with ordinary skills in the field to which the utility model belongs. The words "first", "second" and similar words used in the specification and claims of the utility model patent application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not necessarily indicate quantity restrictions. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0035] The utility model proposes a high-precision punching size assurance structure for thick plates, which is used in the punching positioning process. The utility model does not limit the type of thick steel plates, but the high-precision punching size assurance structure for thick plates is particularly suitable for the punching requirements of thick steel plates.

[0036] In general, the high-precision punching size assurance structure for thick plates proposed in the utility model mainly includes an upper die assembly and a lower die assembly arranged directly below the upper die assembly. Figure 1 , which shows the arrangement relationship between the upper mold assembly and the lower mold assembly.

[0037] In order to achieve the purpose of ensuring the accuracy of punching holes on thick steel plates, and to solve the problem in the background technology that during processing, the thick steel plates are not firmly fixed when clamped, and the clamping force is uneven due to the thick steel plates, which will cause the workpiece to vibrate or deviate during the drilling process, and the inner hole is prone to form a taper, resulting in poor hole accuracy and smoothness. For this reason, in the technical solution provided in this embodiment, the stripping plate insert 9 and the side slider 14 are used to achieve the effect of side pressure positioning of the product process part 24 from the side, which is effective and reliable for positioning the thick steel plate, and can ensure the size from the center of the hole to the edge of the product process part 24 during punching, and the positioning is automatically restored after the punching is completed, which makes it easy to remove the parts after the punching is completed, avoids the occurrence of tapered holes, and effectively improves the punching quality.

[0038] like Figure 1 As shown, the upper die assembly is provided with an upper die base 1, an upper pad 4, an upper clamping plate 5 and a stripping plate 8 in sequence along the direction close to the lower die assembly; an equal height sleeve 2 and a nitrogen spring 3 are installed in the upper die base 1; an upper clamping plate insert 6 is installed in the upper clamping plate 5, and a punching punch 7 for punching thick steel plates is installed in the upper clamping plate insert 6; considering the rapid demolding of the product process part 24 after the punching is completed, for this purpose, the bottom of the nitrogen spring 3 is connected to the stripping plate 8, and a plurality of nitrogen springs 3 are arranged on the stripping plate 8.

[0039] Correspondingly, a lower mold plate 10, a lower pad 17, a lower mold base 18 and a lower pad 19 are sequentially arranged in the lower mold assembly along the direction close to the upper mold assembly. A lower mold insert 12 is installed in the lower mold plate 10 at a position corresponding to the punching punch 7, and a product process part 24 is placed on the lower mold insert 12. An outer tube position 11 is also installed on the lower mold plate 10 to limit the installation position of the product process part 24, thereby achieving a positioning effect.

[0040] As mentioned above, in order to press and position the side of the product process part 24, a stripper plate insert 9 is installed at one end of the upper mold assembly close to the lower mold assembly, and a side slider 14 is provided in the lower mold assembly corresponding to the stripper plate insert 9. The side slider 14 is pushed by the stripper plate insert 9 to move toward the product process part 24 and press the side of the product process part 24.

[0041] It should be specifically stated that, Figure 3 As shown, in the upper mold assembly, a stripper plate insert 9 is installed on the stripper plate 8, and the bottom of the stripper plate insert 9 is extended toward the lower mold assembly, and the side of the stripper plate insert 9 close to the product process part 24 is provided with a first inclined surface 25 and a first vertical surface 27 from the bottom upward;

[0042] Correspondingly, in the lower mold assembly, a side slider 14 is also installed on the lower mold plate 10, so that the lower mold insert 12 is located between the string 14 and the outer tube position 11, and the side slider 14 is arranged close to the stripper plate insert 9 located above. Specifically, the side of the side slider 14 away from the product process part 24 is provided with a second inclined surface 26 and a second vertical surface 28 from the top downward;

[0043] During use, when the upper mold assembly moves toward the lower mold assembly, the left and right positions of the stripper plate insert 9 remain stationary. As the upper mold assembly moves vertically downward, the first inclined surface 25 of the stripper plate insert 9 and the second inclined surface 26 of the side slider 14 first contact and then move tangentially to push the side slider 14 toward the product process part 24. Then, when the first vertical surface 27 and the second vertical surface 28 contact, they move up and down. After that, the side slider 14 no longer slides inward. At this time, the product process part 24 is accurately positioned.

[0044] On this basis, considering that the product process part 24 can be conveniently removed after the punching is completed, a structure that can automatically retract the side slider 14 is also installed, and the end of the side slider 14 away from the product process part 24 is also horizontally connected to a discharge screw 15, and the end of the discharge screw 15 located on the outer side of the lower template 10 is also sleeved with a spring 16. Since the two ends of the spring 16 are respectively arranged between the screw head of the discharge screw 15 and the side wall of the lower template 10, when the upper mold assembly moves upward away from the lower mold assembly, the discharge screw 15 drives the side slider 14 to return to its original state under the action of the spring 16, so that the side pressure of the product process part 24 disappears.

[0045] Preferably, Figure 1 As shown, a plurality of lower die inserts 12 for placing product process parts 24 can be arranged in the lower die assembly, and the stripping plate insert 9 and the outer tube position 11 are arranged corresponding to the number of punching punches 7. A side pressure structure is configured for each product process part 24 to be processed to ensure the punching accuracy on each product process part 24 and avoid the occurrence of unqualified tapered holes.

[0046] In addition, in order to assist the upper mold assembly and the lower mold assembly to always maintain the vertical direction during the up and down movement, an inner limit 13 is installed on the side of the lower mold plate 10, and the top of the inner limit 13 protrudes from the lower mold plate 10. When the stripper plate 8 reaches the lower dead point, the top of the inner limit 13 is against the bottom of the stripper plate 8; at the same time, an inner guide column 20 is installed in the upper clamping plate 5, and the inner guide column 20 passes through the stripper plate 8 and the lower mold plate 10 in sequence during the movement toward the lower mold assembly. The stripper plate 8 and the lower mold plate 10 are respectively provided with an upper inner guide sleeve 21 and a lower inner guide sleeve 22 corresponding to the movement of the inner guide sleeve 20; since the product process part 24 in the lower mold plate 10 in this embodiment is relatively high, in order to compensate for the size difference of the lower inner guide sleeve 22, an inner guide sleeve pad 23 is also installed at the bottom of the lower inner guide sleeve 22 in the lower mold plate 10.

[0047] In use, this embodiment includes the following process steps:

[0048] S1: During punching, the power device drives the punch press slide to lift the upper die assembly as a whole, so that the upper die assembly is separated from the lower die assembly;

[0049] S2: At this time, the product process part 24 is placed on the lower template 10, and the outer tube position 11 is used to complete the initial positioning of the part;

[0050] S3: The upper die assembly moves vertically downward under the action of the power device and the punch slide, and the inner guide pin 20 enters the inner guide sleeve 22 to complete the guidance of the die;

[0051] S4: The upper mold assembly continues to move downward as a whole, the stripper plate insert 9 first contacts the inclined surface of the side slide block 14, and pushes the side slide block 14 to slide inward to press the side of the product process part 24;

[0052] S5: Then the inner straight edge of the stripper plate insert 9 contacts the outer straight edge of the side slide block 14, after which the side slide block 14 no longer slides inward, and the product process part 24 is precisely positioned;

[0053] S6: Continue to move downward, the stripper plate 8 first contacts the upper surface of the product process part 24 and presses the material downward, and then the punching punch 7 enters the lower die insert 12, at which time the upper die reaches the lower dead point, and the product punching is completed;

[0054] S7: After the stamping is completed, the upper die moves upward under the action of the power device to gradually separate the upper die assembly from the lower die assembly, and the side slider 14 slides outward under the action of the spring 16. At the same time, the stripper plate 8 removes the part downward from the punching punch 7 under the action of the nitrogen spring 3. At this time, all components of the upper die assembly and the lower die assembly of the mold are restored to their initial positions, the parts are taken out, and the next stamping process can be carried out.

[0055] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A high-precision punching size assurance structure for thick plates, characterized in that: It includes an upper mold assembly and a lower mold assembly arranged directly below the upper mold assembly; A stripper plate insert (9) is installed at one end of the upper die assembly close to the lower die assembly, and a first inclined surface (25) is provided on a side of the stripper plate insert (9) close to the product process part (24); A side slider (14) is provided in the lower mold assembly corresponding to the stripper plate inlet (9), the side slider (14) is arranged between the stripper plate inlet (9) and the product process part (24), and a second inclined surface (26) is provided on the top of the side of the side slider (14) close to the stripper plate inlet (9); When the upper mold assembly moves toward the lower mold assembly, the first inclined surface (25) contacts the second inclined surface (26), and the side slide block (14) moves toward the product process part (24) under the push of the stripper plate insert (9) and presses the side surface of the product process part (24).

2. The high-precision punching size assurance structure for thick plates according to claim 1 is characterized in that: The mold assembly is provided with an upper mold base (1), an upper pad (4), an upper clamping plate (5) and a stripping plate (8) in sequence along a direction close to the lower mold assembly; The upper die base (1) is provided with a contour sleeve (2) and a nitrogen spring (3); An upper clamping plate insert (6) is installed in the upper clamping plate (5), and a punching punch (7) is installed in the upper clamping plate insert (6); A stripping plate inlet (9) is installed on the stripping plate (8), and the bottom of the stripping plate inlet (9) is extended in the direction of the lower mold assembly.

3. The high-precision punching size assurance structure for thick plates according to claim 2 is characterized in that: The lower die assembly is provided with a lower die plate (10), a lower pad (17), a lower die seat (18) and a lower pad foot (19) in sequence along a direction close to the upper die assembly; A lower die insert (12) is installed in the lower die plate (10) at a position corresponding to the punching punch (7), a product process part (24) is placed on the lower die insert (12), and side slide blocks (14) and outer tube positions (11) are also installed on the lower die plate (10) on both sides of the lower die insert (12).

4. The high-precision punching size assurance structure for thick plates according to claim 3 is characterized in that: The side surface of the stripper plate inlet (9) close to the product process part (24) is provided with a first inclined surface (25) and a first vertical surface (27) from the bottom upward; A second inclined surface (26) and a second vertical surface (28) are provided on the side of the side slide block (14) away from the product process part (24) from the top downward; During the movement of the upper mold assembly toward the lower mold assembly, the first inclined surface (25) and the second inclined surface (26) first contact and then move tangentially to push the side slide block (14) toward the product process part (24), and the first vertical surface (27) and the second vertical surface (28) then contact and move up and down.

5. The high-precision punching size assurance structure for thick plates according to claim 4 is characterized in that: One end of the side sliding block (14) away from the product process part (24) is also horizontally connected to a discharge screw (15), and a spring (16) is sleeved on the end of the discharge screw (15) located outside the lower template (10).

6. The high-precision punching size assurance structure for thick plates according to claim 5 is characterized in that: An inner limiter (13) is installed on the side of the lower template (10), and the top of the inner limiter (13) protrudes from the lower template (10); When the stripping plate (8) reaches the lower dead center, the top of the inner limiter (13) abuts against the bottom of the stripping plate (8).

7. The high-precision punching size assurance structure for thick plates according to claim 6 is characterized in that: An inner guide post (20) is installed in the upper clamping plate (5), and the inner guide post (20) passes through the stripper plate (8) and the lower mold plate (10) in sequence during the movement toward the lower mold assembly. An upper inner guide sleeve (21) and a lower inner guide sleeve (22) are respectively provided in the stripper plate (8) and the lower mold plate (10) corresponding to the movement of the inner guide post (20); An inner guide sleeve cushion block (23) is also installed at the bottom of the lower inner guide sleeve (22) in the lower template (10).

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