High-precision die for forming small sealing ring

Abstract

The utility model relates to the technical field of forming dies, in particular to a high-precision die for forming small sealing rings, which comprises a forming structure. The forming structure comprises a self-edge-removing forming groove formed in the bottom of the die groove, a plurality of forming protruding blocks are arranged in the self-edge-removing forming groove, and a first sealing ring forming groove is formed in the center point of each forming protruding block. A plurality of protruding part forming grooves are formed in the bottom of the extrusion boss, the number and the positions of the protruding part forming grooves correspond to those of the forming protruding blocks, and a second sealing ring forming groove is formed in the center point of each protruding part forming groove. A product is formed into a specified shape through the die, so that in the subsequent punching process, the lower die positioning plate and the upper die positioning plate on the punching jig are used for pressing and positioning the protruding part, the groove part and the sealing ring on the self-disassembling edge, accurate positioning of the sealing ring is achieved, the sealing ring is located at the specified punching position, and the sealing effect is improved. The punching error is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of molding dies, in particular to a high-precision mold for molding a small sealing ring. Background Art

[0002] In the mechanical and electronic industries, sealing rings are widely used in various equipment to achieve the functions of sealing and protection. With the continuous development of technology, the requirements for the accuracy and size of sealing rings are getting higher and higher, especially for small sealing rings, which are small in size and difficult to process. Traditional processing methods are difficult to meet the requirements of high precision and high efficiency.

[0003] In the existing production process of small sealing rings, it is necessary to first process the small sealing rings into Fig. 9 The molded product shown in the figure is composed of a self-detachable edge and a plurality of sealing rings arranged on the self-detachable edge. However, due to the small size of the sealing ring (outer diameter of 1 mm), the sealing ring cannot be accurately positioned in the subsequent punching process of the existing molded product, resulting in deviation in the position of the punched sealing ring, which damages the sealing ring and the production efficiency is not high. Therefore, a high-precision mold for molding small sealing rings is provided to solve the above technical problems. Utility Model Content

[0004] The utility model aims to provide a high-precision mold for molding small sealing rings in view of the shortcomings of the prior art, so as to solve the technical problem that the sealing rings cannot be accurately positioned during the punching process of the existing molded products.

[0005] To achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A high-precision mold for molding a small sealing ring, comprising a lower mold plate and an upper mold plate used in conjunction therewith, the lower mold plate is provided with a mold groove, and the bottom of the upper mold plate is provided with an extrusion boss that can be embedded in the mold groove, and a plurality of molding structures for molding the product are provided at the bottom of the extrusion boss and the bottom of the mold groove;

[0007] The molding structure includes a self-demolition edge molding groove arranged at the bottom of the mold groove, a plurality of molding protrusions are arranged in the self-demolition edge molding groove, and a first sealing ring molding groove is arranged at the center point of the molding protrusion; a plurality of raised part molding grooves are arranged at the bottom of the extrusion boss, and the number and position of the raised part molding grooves correspond to the molding protrusions, and a second sealing ring molding groove is arranged at the center point of each raised part molding groove.

[0008] Furthermore, after the upper mold plate and the lower mold plate are molded together, a gap is formed between the top of the molding protrusion and the bottom of the extrusion boss.

[0009] Furthermore, a plurality of positioning grooves are provided on the lower template, and a plurality of positioning protrusions which can be embedded in the positioning grooves are provided on the upper template, and the number and positions of the positioning protrusions correspond to the positioning grooves.

[0010] Furthermore, the protrusion forming groove is annular.

[0011] Furthermore, a plurality of through-hole forming columns are arranged in the self-detaching edge forming groove.

[0012] Furthermore, the height of the through-hole forming column is consistent with the depth of the self-demolition edge forming groove.

[0013] The beneficial effects of the utility model are as follows: when in use, first pour the liquid silicone into the mold groove, then place the upper mold plate on the lower mold plate for mold closing, and embed the extrusion boss into the mold groove to extrude the liquid silicone. The self-detaching edge is formed under the action of the extrusion boss and the self-detaching edge forming groove, and the sealing ring is formed under the action of the first sealing ring forming groove and the second sealing ring forming groove. Under the action of the raised portion forming groove and the forming protrusion, the self-detaching edge after forming has a plurality of raised portions on the top and a plurality of groove portions on the bottom. The product is formed into a specified shape by the mold, so that in the subsequent punching process, the raised portions, groove portions and sealing ring on the self-detaching edge are pressed and positioned by the lower mold positioning plate and the upper mold positioning plate on the punching jig, thereby realizing precise positioning of the sealing ring, so that the sealing ring is in the specified punching position, reducing the punching error and improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0015] Figure 2 It is a structural schematic diagram of the utility model in which the upper template and the lower template are separated.

[0016] Figure 3 It is an enlarged view of part A of the utility model.

[0017] Figure 4 This is a structural schematic diagram from another perspective of the utility model in a state where the upper template and the lower template are separated.

[0018] Figure 5 It is an enlarged view of part B of the utility model.

[0019] Figure 6 It is a schematic diagram of the internal structure of the utility model after the upper template and the lower template are molded together.

[0020] Figure 7 It is a schematic diagram of the structure of the sealing ring of the utility model after molding.

[0021] Figure 8This is a schematic structural diagram of the sealing ring of the utility model after molding from another viewing angle.

[0022] Fig. 9 This is a schematic diagram of the structure of the existing product.

[0023] Reference numerals include:

[0024] 1. Lower template; 101, positioning groove; 2. Upper template; 201, positioning convex block; 3. Mold groove; 4. Extrusion boss; 5. Self-detaching edge forming groove; 6. Raised portion forming groove; 7. Forming convex block; 8. First sealing ring forming groove; 9. Second sealing ring forming groove; 10. Through hole forming column; 11. Self-detaching edge; 12. Sealing ring; 13. Raised portion; 14. Groove portion; 15. Through hole. DETAILED DESCRIPTION

[0025] The following is a detailed description of a high-precision mold for molding a small sealing ring of the utility model in conjunction with the accompanying drawings.

[0026] In the production process of small sealing rings, it is necessary to first process the small sealing rings into Figure 7-8 The molded product includes a self-detachable edge 11 and a plurality of sealing rings 12 with burrs arranged on the self-detachable edge 11; in order to improve the positioning effect of the molded product, a convex portion 13 is arranged on the circumference of each sealing ring 20 arranged on the self-detachable edge 11, and the convex portion 13 is placed on the top of the self-detachable edge 11, and a groove portion 14 is arranged on the circumference of each sealing ring 12, and the groove portion 14 is placed on the bottom of the self-detachable edge 11. In addition, a plurality of through holes 15 are also arranged on the self-detachable edge 11. Under the action of the convex portion 13, the groove portion 14 and the through holes 15, the self-detachable edge 11 and the plurality of sealing rings 12 can be fully positioned in the subsequent punching process.

[0027] like Figure 1 As shown, an embodiment of the utility model of a high-precision mold for molding a small sealing ring includes a lower template 1 and an upper template 2 used in conjunction with the lower template 1, wherein a plurality of positioning grooves 101 are provided on the lower template 1, and a plurality of positioning protrusions 201 that can be embedded in the positioning grooves 101 are provided on the upper template 2, and the number and positions of the positioning protrusions 201 correspond to the positioning grooves 101; when the upper template 2 and the lower template 1 are molded together, under the action of the positioning protrusions 201 and the positioning grooves 101, the accuracy of the mold is improved and the molding error of the product is reduced.

[0028] like Figure 2-5As shown, the lower template 1 is provided with a mold groove 3, and an extrusion boss 4 which can be embedded in the mold groove 3 is provided at the bottom of the upper template 2, and a plurality of molding structures for molding the product are provided at the bottom of the extrusion boss 4 and the bottom of the mold groove 3, and the extrusion boss 4 is used to extrude liquid silicone; first, the liquid silicone is poured into the mold groove 3, and then the upper template 2 is placed on the lower template 1, so that the upper template 2 and the lower template 1 are molded, and the extrusion boss 4 is embedded in the mold groove 3, and under the action of the molding structure, the liquid silicone poured into the mold groove 3 is extruded and molded; and multiple products can be extruded and molded at one time, thereby improving production efficiency.

[0029] Further, the molding structure includes a self-detachable edge molding groove 5 arranged at the bottom of the die groove 3, wherein a plurality of molding protrusions 7 for molding the groove portion 14 are arranged in the self-detachable edge molding groove 5, and a first sealing ring molding groove 8 is arranged at the center point of the molding protrusion 7; a plurality of annular raised portion molding grooves 6 are arranged at the bottom of the extrusion boss 4, and the number and position of the raised portion molding grooves 6 correspond to the molding protrusions 7, and a second sealing ring molding groove 9 is arranged at the center point of each raised portion molding groove 6. Figure 6 As shown, under the action of the extrusion boss 4 and the self-detachment edge forming groove 5, the self-detachment edge 11 is formed, under the action of the first sealing ring forming groove 8 and the second sealing ring forming groove 9, the sealing ring 12 is formed, and under the action of the convex portion forming groove 6 and the forming protrusion 7, the top of the self-detachment edge 11 after forming has a plurality of convex portions 13 (such as Figure 7 As shown), the bottom has a plurality of grooves 14 (as shown Figure 8 As shown); in addition, after the upper mold 2 and the lower mold 1 are molded together, there is a gap of 0.02mm between the top of the molding protrusion 7 and the bottom of the extrusion boss 4, so that the molded sealing ring 12 is connected to the molded self-detachable edge 11, so as to achieve the effect that the circumferential side of each sealing ring 12 is provided with a protrusion 13 and a groove 14. When performing the subsequent punching process, the self-detachable edge 11 can be directly placed at the designated punching position. In addition, a plurality of through-hole molding columns 10 are provided in the self-detachable edge molding groove 5, and the height of the through-hole molding columns 10 is consistent with the depth of the self-detachable edge molding groove 5. In the process of the extrusion boss 4 squeezing the liquid silicone to form the self-detachable edge 11, under the action of the through-hole molding columns 10, a plurality of through holes 15 (as shown) are provided on the molded self-detachable edge 11. Figure 5 In the subsequent punching process, the lower die positioning plate and the upper die positioning plate on the punching jig are used to press and position the raised portion 13, the groove portion 14 and the through hole 15 on the self-detaching edge 11, thereby realizing accurate positioning of the sealing ring 20, so that the sealing ring 20 is in the specified punching position, reducing the punching error and improving the production efficiency.

[0030] In summary, it can be seen that the utility model has the above-mentioned excellent characteristics, which can enhance the performance unprecedented in the prior art and become a product with great practical value.

[0031] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A high-precision mold for molding a small sealing ring, comprising a lower mold plate (1) and an upper mold plate (2) used in conjunction with the lower mold plate (1), wherein the lower mold plate (1) is provided with a mold groove (3), and the bottom of the upper mold plate (2) is provided with an extrusion boss (4) that can be embedded in the mold groove (3), characterized in that: A plurality of molding structures for molding the product are provided at the bottom of the extrusion boss (4) and the bottom of the die groove (3); The molding structure comprises a self-detachable edge molding groove (5) arranged at the bottom of the mold groove (3), a plurality of molding protrusions (7) are arranged in the self-detachable edge molding groove (5), and a first sealing ring molding groove (8) is arranged at the center point of the molding protrusion (7); a plurality of raised portion molding grooves (6) are arranged at the bottom of the extrusion boss (4), and the number and position of the raised portion molding grooves (6) correspond to the molding protrusions (7), and a second sealing ring molding groove (9) is arranged at the center point of each raised portion molding groove (6).

2. A high-precision mold for forming a small sealing ring according to claim 1, characterized in that: After the upper mold plate (2) and the lower mold plate (1) are molded together, a gap is formed between the top of the molding protrusion (7) and the bottom of the extrusion boss (4).

3. The high-precision mold for forming a small sealing ring according to claim 1, characterized in that: A plurality of positioning grooves (101) are provided on the lower template (1), and a plurality of positioning protrusions (201) that can be embedded in the positioning grooves (101) are provided on the upper template (2), and the number and positions of the positioning protrusions (201) correspond to the positioning grooves (101).

4. The high-precision mold for forming a small sealing ring according to claim 1, characterized in that: The protrusion forming groove (6) is annular.

5. The high-precision mold for forming a small sealing ring according to claim 1, characterized in that: A plurality of through-hole forming columns (10) are arranged in the self-detachable edge forming groove (5).

6. The high-precision mold for forming a small sealing ring according to claim 5, characterized in that: The height of the through-hole forming column (10) is consistent with the depth of the self-demolition edge forming groove (5).

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