Tool structure capable of preventing metal piece from being damaged

Abstract

The utility model discloses a tool structure for preventing a metal piece from being damaged. The tool structure comprises a lower die plate; the clamp is arranged in the lower die plate, and a positioning boss used for being matched with the metal piece in a clearance sleeving mode to form a clearance space is arranged in the middle of the clamp. The lower bottom plate is in surface contact with the bottom surface of the clamp and applies force upwards to abut against the metal piece, the pressing body applies force downwards to press the metal piece, the metal piece is in clearance fit with the positioning boss of the clamp in a sleeved mode to form a clearance space, and the metal piece expands in the clearance space after being heated and cannot be too tightly matched with the positioning boss. The problem that a vulcanized metal piece is difficult to take out due to too tight matching with a positioning boss of a clamp due to thermal expansion is solved.

Description

Technical Field

[0001] The utility model relates to a tooling structure for preventing metal parts from being damaged, and belongs to the technical field of mold tooling. Background Art

[0002] After the parts of the metal glue assembly are pressed, the metal part 11 and the fixture 12 are installed in the tooling mold 3 and vulcanized in the second stage. Figure 3 As shown, since the metal part 11 is in direct contact with the positioning boss 121 of the clamp 12, the vulcanized metal part 11 expands due to heat, resulting in an over-tight fit with the positioning boss 121 of the clamp 12, making it difficult to remove and causing damage. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a tooling structure for preventing metal parts from being damaged.

[0004] The utility model is realized through the following technical solutions.

[0005] The utility model provides a tooling structure for preventing metal parts from being damaged, comprising:

[0006] Next template;

[0007] A fixture installed in the lower template has a positioning boss in the middle of the fixture for fitting with the metal part gap to present a gap space.

[0008] A through hole is arranged in the lower template, an upward groove is arranged at the bottom of the through hole, and a clamp is installed in the groove.

[0009] A pressing body for pressing down the metal part is fixedly installed on the clamp by screws, and the pressing body is a part of the clamp; a lower bottom plate is installed on the lower template, and the lower bottom plate is in surface contact with the bottom surface of the clamp.

[0010] The top of the positioning boss is a step.

[0011] The lower template is installed with an upper template, and a tapered through hole is arranged in the middle of the upper template.

[0012] A positioning block is installed in the tapered through hole of the upper template through a tapered block, and the positioning block is provided with a positioning through hole for cooperating with the outer surface of the top of the metal part for positioning and installation.

[0013] The positioning block is fixedly connected to the conical block via pins or screws.

[0014] The lower template and the upper template are provided with a spaced opening.

[0015] The beneficial effects of the utility model are as follows: the lower bottom plate contacts the bottom surface of the clamp to apply force upward to the metal part, the pressure body applies force downward to press the metal part, the metal part and the positioning boss of the clamp are gap-fitted to form a gap space, and the metal part expands in the gap space after being heated without being too tightly fitted with the positioning boss, thus solving the problem that the metal part after vulcanization expands due to heat, resulting in too tight fit with the positioning boss of the clamp, making it difficult to remove and causing damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the main cross-section of the utility model;

[0017] Figure 2 yes Figure 1 A local enlarged schematic diagram of the middle A;

[0018] Figure 3 It is a schematic diagram of the main cross-section of the prior art;

[0019] In the figure: 3-tooling mold; 31-lower template; 32-upper template; 33-lower base plate; 12-clamp; 121-positioning boss; 122-pressing body; 123-gap space; 124-step; 321-positioning block; 322-conical block; 11-metal part. DETAILED DESCRIPTION

[0020] The technical solution of the utility model is further described below, but the scope of protection required is not limited to the description.

[0021] like Figure 1 to Figure 2 shown.

[0022] A tooling structure for preventing damage to metal parts in the present application includes:

[0023] The lower mold plate 31 , the upper mold plate 32 and the lower base plate 33 constitute the main components of the tooling die 3 .

[0024] A through hole is provided in the lower template 31, and an upward groove is provided at the bottom of the through hole. A clamp 12 is installed in the groove. A positioning boss 121 is integrally formed and fixed in the middle of the clamp 12 for fitting with the metal part 11. A pressing body 122 is fixed on the clamp 12 by screws to press the metal part 11 downward. The pressing body 122 is a part of the clamp 12.

[0025] The diameter of the positioning boss 121 is smaller than that of the metal part 11, so that the gap fit is formed to present a gap space 123. After the metal part 11 is heated, it expands in the gap space 123, and when the metal part 11 is separated from the positioning boss 121 of the fixture 12, the top of the positioning boss 121 is a step 124. After the metal part 11 expands, it contacts below the step 124 instead of contacting the step 124 at the top of the positioning boss 121, so that it is easy to separate later.

[0026] The lower template 31 is installed with the lower base plate 33 through the positioning pins, and the lower base plate 33 is in contact with the bottom surface of the clamp 12; the lower base plate 33 applies force upward to the clamp 12 to press the metal part 11, and the pressing body 122 applies force downward to press the metal part 11 to ensure that the metal part 11 is in a stable position.

[0027] The lower template 31 is installed with the upper template 32 through a positioning pin. A conical through hole is provided in the middle of the upper template 32. A positioning block 321 is installed in the conical through hole through a conical block 322. The positioning block 321 is fixedly connected to the conical block 322 by pins or screws. The positioning block 321 is provided with a positioning through hole for cooperating with the top outer surface of the metal part 11 for positioning and installation.

[0028] The lower mold plate 31 and the upper mold plate 32 are separated by a prying opening 34 to facilitate later mold opening.

[0029] The lower bottom plate 33 contacts the bottom surface of the fixture 12 and applies force upward to press the metal part 11, and the pressing body 122 applies force downward to press the metal part 11. The metal part 11 and the positioning boss 121 of the fixture 12 are fitted to form a gap space 123. During the second stage vulcanization, the metal part 11 expands in the gap space 123 after being heated and will not fit too tightly with the positioning boss 121. When the metal part 11 is quickly removed from the positioning boss 121, the inner surface will not be damaged, which solves the problem that the metal part 11 after vulcanization expands due to heat, which causes the positioning boss 121 of the fixture 12 to fit too tightly, making it difficult to remove and causing damage. At the same time, the lower bottom plate 33 installed with the lower template 31 supports the bottom surface of the fixture 12, avoiding the cumbersome situation in the prior art where the fixture 12 needs to be fixed and installed with the lower template 31 by screws.

Claims

1. A tooling structure for preventing damage to metal parts, characterized in that: include: Lower template (31); A fixture (12) installed in the lower template (31), wherein a positioning boss (121) is provided in the middle of the fixture (12) for being fitted with the metal part (11) to form a gap space (123); The lower template (31) is provided with a through hole, the bottom of the through hole is provided with an upward groove, and the fixture (12) is installed in the groove; A pressing body (122) for pressing the metal part (11) downward is fixedly mounted on the clamp (12), and the pressing body (122) is a part of the clamp (12); a lower base plate (33) is mounted on the lower template (31), and the lower base plate (33) is in surface contact with the bottom surface of the clamp (12).

2. The tooling structure for preventing damage to metal parts according to claim 1, characterized in that: The top of the positioning boss (121) is a step (124).

3. The tooling structure for preventing damage to metal parts according to claim 1, characterized in that: The lower template (31) is installed with an upper template (32), and a tapered through hole is provided in the middle of the upper template (32).

4. The tooling structure for preventing damage to metal parts as claimed in claim 3, characterized in that: A positioning block (321) is installed in the tapered through hole of the upper template (32) via a tapered block (322), and the positioning block (321) is provided with a positioning through hole for cooperating with the outer surface of the top of the metal part (11) for positioning and installing.

5. The tooling structure for preventing damage to metal parts as claimed in claim 4, characterized in that: The positioning block (321) and the conical block (322) are fixedly connected via pins or screws.

6. The tooling structure for preventing damage to metal parts as claimed in claim 3, characterized in that: The lower template (31) and the upper template (32) are provided with a spaced opening (34).

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