Automatic blank positioning die

Abstract

An automatic blank positioning mold comprises an upper mold base and a lower mold base which are vertically and correspondingly arranged, a lower base plate is installed on the upper surface of the lower mold base, a lower mold plate is installed on the upper surface of the lower base plate, a fixed positioning block is installed on one side of the lower mold plate, a plate groove is formed in the other side of the lower mold plate, and a sliding positioning block is movably installed in an inner cavity of the plate groove. A spring is arranged on the side, away from the fixed positioning block, of the sliding positioning block and located between the sliding positioning block and the side wall of the inner cavity of the plate groove. A blank is placed on the upper surface of the lower die plate and located between the fixed positioning block and the sliding positioning block. According to the utility model, the defects in the prior art are overcome, and the gapless clamping and positioning effect on the blank can be realized, so that the production size precision of the blank can be greatly improved, and the rejection rate of products is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the field of machinery, in particular to stamping processing technology, and specifically relates to an automatic positioning blank die. Background Art

[0002] Stamping is a pressure processing method that applies pressure to materials using a die installed on a press at room temperature to cause separation or plastic deformation, thereby obtaining the required parts; during the stamping process, the product will move relative to the die base with the impact, resulting in the punched shape deviating from the expected shape. Therefore, it is necessary to fix the product to prevent displacement during the stamping process.

[0003] In the prior art, the lower die base of the stamping machine is not convenient for positioning operations. Especially when dealing with precision bending products, when the product blank is positioned through the existing fixed positioning blocks on the lower die base, there is usually a certain gap between the blank and the fixed positioning blocks. The existing gap will cause the dimensional fluctuations of precision products to exceed the tolerance range, resulting in product scrapping. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides an automatic positioning blank die, which overcomes the deficiencies of the prior art, can achieve a gapless clamping and positioning effect on the blank, thereby greatly improving the production dimensional accuracy of the blank, and effectively reducing the product scrap rate.

[0005] To achieve the above objectives, the utility model is realized through the following technical solutions:

[0006] An automatic positioning blank die, including an upper die base and a lower die base arranged corresponding to each other up and down. A lower backing plate is installed on the upper surface of the lower die base, a lower template is installed on the upper surface of the lower backing plate, a fixed positioning block is installed on one side of the lower template, a plate groove is opened on the other side of the lower template, a sliding positioning block is movably installed in the inner cavity of the plate groove, a spring is arranged on the side of the sliding positioning block away from the fixed positioning block, and both ends of the spring are abutted against the side wall of the sliding positioning block and the inner cavity side wall of the plate groove respectively;

[0007] The upper surface of the lower template is used for placing the blank, and the blank is located between the fixed positioning block and the sliding positioning block.

[0008] Preferably, a fixed positioning block installation groove is arranged on one side of the lower template, the lower section of the fixed positioning block is installed in the fixed positioning block installation groove, a bolt hole with an upper end opening is vertically opened in the fixed positioning block, a bolt is installed in the bolt hole, and the stud end of the bolt passes through the lower template and is connected to the lower backing plate.

[0009] Preferably, a lower support plate is connected to the lower die base through lower foot pads.

[0010] Preferably, a bolt installation groove is formed on the lower surface of the lower die base. A fixing bolt is installed in the bolt installation groove. The stud end of the fixing bolt sequentially passes through the lower die base and the lower backing plate and is threadedly connected to the lower template.

[0011] Preferably, an outer guide post is arranged above the lower die base, and a guide sleeve for cooperating with the outer guide post is arranged below the upper die base. A buffer spring is arranged on the outer surface of the outer guide post. A steel ball bushing is arranged at the contact part between the outer guide post and the guide sleeve. The upper end of the buffer spring abuts against the lower surface of the steel ball bushing.

[0012] The utility model provides an automatic positioning blank mold, which has the following beneficial effects: by arranging a plate groove and a spring on the lower template, the sliding positioning block is elastically forced by the spring and slides towards the fixed positioning block, so that the blank can be clamped and positioned without clearance through the cooperation between the sliding positioning block and the fixed positioning block, thereby greatly improving the production dimension accuracy of the blank. Subsequently, the rejection rate of the product is effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the drawings required for the description of the prior art will be briefly introduced below.

[0014] Figure 1 Structure schematic diagram of the present utility model;

[0015] Figure 2 Partial structure schematic diagram of the present utility model;

[0016] Explanation of the reference numerals in the drawings:

[0017] 1. Upper die base; 2. Lower die base; 3. Lower backing plate; 4. Lower template; 5. Fixed positioning block; 6. Plate groove; 7. Sliding positioning block; 8. Spring; 9. Blank; 10. Lower foot pad; 11. Lower support plate; 12. Bolt installation groove; 13. Fixing bolt; 14. Bolt; 15. Outer guide post; 16. Guide sleeve; 17. Buffer spring; 18. Steel ball bushing. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the technical solutions in the present utility model will be clearly and completely described below with reference to the drawings in the present utility model.

[0019] Example 1, as Figures 1 to 2As shown in the figure, an automatic positioning blank mold includes an upper die base 1 and a lower die base 2 which are arranged corresponding to each other up and down. A lower backing plate 3 is installed on the upper surface of the lower die base 2, a lower template 4 is installed on the upper surface of the lower backing plate 3, a fixed positioning block 5 is installed on one side of the lower template 4, a plate groove 6 is formed on the other side of the lower template 4, a sliding positioning block 7 is movably installed in the inner cavity of the plate groove 6, a spring 8 is arranged on the side of the sliding positioning block 7 away from the fixed positioning block 5, and both ends of the spring 8 are abutted against the side wall of the sliding positioning block 7 and the inner cavity side wall of the plate groove 6 respectively;

[0020] The upper surface of the lower template 4 is used to place the blank 9, and the blank 9 is located between the fixed positioning block 5 and the sliding positioning block 7.

[0021] Working principle:

[0022] When in use, first move the sliding positioning block 7 in the direction away from the fixed positioning block 5 to compress the spring 8, then place the blank 9 at the position between the fixed positioning block 5 and the sliding positioning block 7 on the upper surface of the lower template 4, and then release the sliding positioning block 7, so that the sliding positioning block 7 is subjected to the elastic force of the spring and slides in the direction of the fixed positioning block 5. Thus, the blank 9 can be clamped and positioned without clearance through the cooperation of the sliding positioning block 7 and the fixed positioning block 5, so as to greatly improve the production dimension accuracy of the blank 9. Subsequently, the rejection rate of the product is effectively reduced.

[0023] Embodiment 2, as a further preferred scheme of Embodiment 1, a fixed positioning block installation groove is arranged on one side of the lower template 4, the lower section of the fixed positioning block 5 is installed in the fixed positioning block installation groove, a bolt hole with an upper end opening is vertically formed in the fixed positioning block 5, a bolt 14 is installed in the bolt hole, and the stud end of the bolt 14 passes through the lower template 4 and is connected to the lower backing plate 3. By installing the fixed positioning block 5 in the fixed positioning block installation groove on one side of the lower template 4, the limiting effect on the position of the fixed positioning block 5 is realized, and then the mutual connection and fixation among the fixed positioning block 5, the lower template 4 and the lower backing plate 3 are realized through the bolt 14, so as to ensure the stability of the fixed positioning block 5 during use.

[0024] Embodiment 3, as a further preferred scheme of Embodiment 1, a lower support plate 11 is connected to the lower die base 2 through a lower foot 10. Through the combined action of the lower support plate 11 and the lower foot 10, the lower die base 2 is supported.

[0025] Example 4, as a further preferred solution of Example 1, a bolt installation groove 12 is formed on the lower surface of the lower die base 2. A fixing bolt 13 is installed in the bolt installation groove 12. The stud end of the fixing bolt 13 sequentially passes through the lower die base 2 and the lower backing plate 3 and is threadedly connected to the lower template 4. The fixing bolt 13 is used to connect and fix the lower die base 2, the lower backing plate 3 and the lower template 4 to ensure the stability of the entire mold during use. And when disassembly and maintenance are required, only the fixing bolt 13 needs to be removed, and then the disassembly and maintenance work of the lower backing plate 3 and the lower template 4 can be carried out.

[0026] Example 5, as a further preferred solution of Example 1, an outer guide post 15 is arranged above the lower die base 2, and a guide sleeve 16 cooperating with the outer guide post 15 is arranged below the upper die base 1. A buffer spring 17 is arranged on the outer surface of the outer guide post 15, and a steel ball bushing 18 is arranged at the contact part of the outer guide post 15 and the guide sleeve 16. The upper end of the buffer spring 17 abuts against the lower surface of the steel ball bushing 18. Through the guiding movement of the outer guide post 15 in the guide sleeve 16, when the lower die base 2 moves downward, a guiding movement effect can be achieved on the lower die base 2, so as to ensure the stability of the lower die base 2 when it is pressed downward. A certain buffer effect can be achieved through the buffer spring 17.

[0027] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An automatic blank positioning die, comprising an upper die base (1) and a lower die base (2) arranged correspondingly above and below, characterized in that: A lower pad (3) is installed on the upper surface of the lower die base (2), and a lower mold plate (4) is installed on the upper surface of the lower pad (3). A fixed positioning block (5) is installed on one side of the lower mold plate (4), and a plate groove (6) is opened on the other side of the lower mold plate (4). A sliding positioning block (7) is movably installed in the inner cavity of the plate groove (6), and a spring (8) is provided on the side of the sliding positioning block (7) away from the fixed positioning block (5), and the two ends of the spring (8) are respectively against the side of the sliding positioning block (7) and the side wall of the inner cavity of the plate groove (6).

2. The automatic blank positioning mold according to claim 1, characterized in that: A fixed positioning block installation groove is provided on one side of the lower template (4), and the lower section of the fixed positioning block (5) is installed in the fixed positioning block installation groove. The fixed positioning block (5) is vertically provided with a bolt hole with an upper end opening, and a bolt (14) is installed in the bolt hole. The stud end of the bolt (14) passes through the lower template (4) and is connected to the lower pad (3).

3. The automatic blank positioning mold according to claim 1, characterized in that: A lower supporting plate (11) is connected below the lower die base (2) via a lower pad (10).

4. The automatic blank positioning mold according to claim 1, characterized in that: The lower surface of the lower die base (2) is provided with a bolt installation groove (12), a fixing bolt (13) is installed in the bolt installation groove (12), and the stud end of the fixing bolt (13) passes through the lower die base (2) and the lower pad (3) in sequence and is threadedly connected to the lower mold plate (4).

5. The automatic blank positioning mold according to claim 1, characterized in that: An outer guide post (15) is arranged above the lower die seat (2), a guide sleeve (16) used in conjunction with the outer guide post (15) is arranged below the upper die seat (1), a buffer spring (17) is arranged on the outer surface of the outer guide post (15), a steel ball bushing (18) is arranged at the contact portion between the outer guide post (15) and the guide sleeve (16), and the upper end of the buffer spring (17) abuts against the lower surface of the steel ball bushing (18).

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