Screw mold sleeve piece

Abstract

The utility model discloses a screw mould sleeve piece, which relates to the technical field of screw mould sleeve pieces, and comprises an upper sleeve piece, a step-shaped slotted hole is arranged at the lower end of the upper sleeve piece, a gasket is arranged in the slotted hole, a loosening pad is arranged on the lower bottom surface of the gasket, a rubber pad is arranged at the lower end of the loosening pad, and the loosening pad is a thread-line-shaped single-layer gasket. Through the arrangement of the upper sleeve piece, the positions of the backing rings on the lower portion can be better limited, the situation that normal stress of the sleeve pieces is affected due to scattered distribution of the backing rings is avoided, through the arrangement of the loosening pad, loosening of the stress sleeve pieces can be compensated, the sleeve pieces are prevented from loosening, and through the arrangement of the fastening thread grooves and the fastening thread protruding strips, the fastening effect is good. By means of the structure, all the backing rings can be better limited, deviation of all the backing rings is avoided, meanwhile, the disassembling difficulty of all the backing rings is reduced, and through the arrangement of the anti-skid protruding points on the top face of the upper sleeving piece, the sleeving piece can be better attached to the upper sleeving piece, and the sleeving pieces are prevented from loosening.

Description

Technical Field

[0001] The utility model relates to the technical field of screw mold sleeves, in particular to a screw mold sleeve. Background Art

[0002] With the development of enterprises, the construction industry has also developed rapidly, and screws and other connecting parts have been widely used. At present, the production of hexagon socket screws and other connecting parts is mainly produced by molds; among them, the sleeve is one of the commonly used cold forging molds in the screw production industry. It is mainly preformed on the head of the screw, and its size control accuracy must meet the national standards for screw products;

[0003] Most of the existing sleeves are single-layer stepped structures. The single-layer stepped sleeves are easy to wear, and the cylindrical head is prone to have a small taper at the top and a large bottom during the pressing process, which makes it unable to meet the national standards for screw products, resulting in a high scrap rate, low production efficiency, and product quality cannot be strictly guaranteed; therefore, the present application designs a screw mold sleeve to solve the above problems. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and provides a screw mold set.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a screw mold sleeve, including an upper sleeve, the lower end of the upper sleeve is provided with a stepped slot hole, a gasket is installed in the slot hole, the lower bottom surface of the gasket is provided with a relaxation pad, the lower end of the relaxation pad is provided with a rubber pad, and the relaxation pad is a single-layer gasket in the shape of a thread.

[0006] Preferably, a fastening thread groove is provided on the inner side wall of the upper sleeve, and a fastening thread convex strip is provided on the upper outer side of the rubber pad, and the fastening thread groove is meshingly connected with the fastening thread convex strip.

[0007] Preferably, a plurality of first anti-skid grooves are equidistantly formed on the lower bottom surface of the gasket in the circumferential direction, and a plurality of anti-skid convex strips are equidistantly formed on the top surface of the rubber pad in the circumferential direction.

[0008] Preferably, the top surface of the upper cover is provided with a plurality of protruding anti-slip bumps.

[0009] Preferably, the hole through which the upper sleeve passes is chamfered.

[0010] Preferably, a plurality of second anti-slip grooves are equidistantly formed on the bottom surface of the rubber pad in the circumferential direction.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: in the utility model, through the setting of the upper sleeve, the position of each gasket ring at the lower part can be better limited, and the scattered distribution of each gasket ring can be avoided to affect the normal stress of the sleeve; through the setting of the relaxation pad, the relaxation of the stress sleeve can be compensated to avoid the sleeve from loosening; through the setting of the fastening thread groove and the fastening thread convex strip, each gasket ring can be better limited to avoid the displacement of each gasket ring, and the difficulty of disassembling each gasket ring can be reduced; through the setting of the first anti-skid groove and the anti-skid convex strip, the gasket and the rubber pad can be fixed to each other when they are pressed against each other to avoid the gasket and the rubber pad from slipping; through the setting of the anti-skid convex point on the top surface of the upper sleeve, the sleeve can be better fitted with the upper sleeve and the sleeve can be prevented from loosening; through the setting of the chamfer on the upper sleeve, the sleeve can be better installed and fixed, thereby improving the sealing performance of the sleeve head and the thread, thereby avoiding liquid or gas leakage; through the setting of the second anti-skid groove, the gasket can be better prevented from loosening, so that the sleeve is fixed more tightly and not easy to loosen. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0013] Figure 1 This is a schematic diagram of the overall three-dimensional structure proposed by the utility model;

[0014] Figure 2 This is a schematic diagram of the three-dimensional structure of the upper set of plates proposed by the utility model;

[0015] Figure 3 This is a schematic diagram of the three-dimensional structure of the anti-slip mat proposed by the utility model;

[0016] Figure 4 This is a three-dimensional structural diagram of the installation relationship between the upper sleeve and the gasket proposed by the utility model;

[0017] Figure 5 This is a schematic diagram of the three-dimensional structure of the rubber pad proposed by the utility model.

[0018] Serial numbers in the figure: 1, upper sleeve; 2, washer; 3, rubber pad; 4, chamfer; 5, release pad; 6, fastening thread groove; 7, first anti-skid groove; 8, fastening thread convex strip; 9, second anti-skid groove. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] Example: See Figure 1-5 The utility model discloses a screw mold sleeve, comprising an upper sleeve 1, a stepped slot hole is formed at the lower end of the upper sleeve 1, a washer 2 is installed in the slot hole, a release pad 5 is provided on the lower bottom surface of the washer 2, a rubber pad 3 is provided at the lower end of the release pad 5, and the release pad 5 is a single-layer gasket in the shape of a thread line. Through the arrangement of the upper sleeve 1, the position of each gasket ring at the lower part can be better limited to avoid the scattered distribution of each gasket ring affecting the normal force of the sleeve. Through the arrangement of the release pad 5, the relaxation of the stress sleeve can be compensated to avoid the loosening of the sleeve; the inner side wall of the upper sleeve 1 is provided with a fastening thread groove 6, and the upper outer side of the rubber pad 3 is provided with a fastening thread convex strip 8, the fastening thread groove 6 is screwed and connected with the fastening thread convex strip 8, and through the arrangement of the fastening thread groove 6 and the fastening thread convex strip 8, each gasket ring can be better limited to avoid the displacement of each gasket ring and reduce the difficulty of splitting each gasket ring.

[0021] In the utility model, the lower bottom surface of the gasket 2 is circumferentially equidistantly provided with several first anti-skid grooves 7, and the top surface of the rubber pad 3 is circumferentially equidistantly provided with several anti-skid convex strips. Through the arrangement of the first anti-skid grooves 7 and the anti-skid convex strips, the gasket 2 and the rubber pad 3 can be fixed to each other when they are pressed against each other to prevent the gasket 2 and the rubber pad 3 from slipping; the top surface of the upper sleeve 1 is provided with several protruding anti-skid convex points. Through the arrangement of the anti-skid convex points on the top surface of the upper sleeve 1, the sleeve can be better fitted with the upper sleeve 1 and the sleeve can be prevented from loosening; the hole of the upper sleeve 1 through which the sleeve is penetrated is provided with a chamfer 4. Through the arrangement of the chamfer 4 on the upper sleeve 1, the sleeve can be better installed and fixed, thereby improving the sealing performance of the sleeve head and the thread, thereby preventing liquid or gas leakage; the bottom surface of the rubber pad 3 is circumferentially equidistantly provided with several second anti-skid grooves 9. Through the arrangement of the second anti-skid grooves 9, the gasket can be better prevented from loosening, so that the sleeve is fixed more tightly and not easy to loosen.

[0022] Working principle: When the utility model is used, first put the washer 2 into the T-shaped slot hole of the upper sleeve 1. The setting of the anti-slip convex points on the top surface of the upper sleeve 1 can better make the sleeve fit with the upper sleeve 1 and prevent the sleeve from loosening. Then put the relaxation pad 5 into contact with the upper top surface of the washer 2, and finally connect and fix the rubber pad 3 through the engagement of the fastening thread groove 6 and the fastening thread convex strip 8. The setting of the fastening thread groove 6 and the fastening thread convex strip 8 can better limit the position of each gasket ring and avoid the displacement of each gasket ring, while reducing the difficulty of disassembling each gasket ring. The multi-layer structure on the sleeve can better suppress the screws and increase the service life of the sleeve. Then place the sleeve in the position of the installation mold and then prepare the screws. At this point, the installation and use of the sleeve is completed.

[0023] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A screw mold set, comprising an upper set (1), characterized in that: The lower end of the upper sleeve (1) is provided with a stepped slot, a gasket (2) is installed in the slot, a relaxation pad (5) is provided on the lower bottom surface of the gasket (2), a rubber pad (3) is provided at the lower end of the relaxation pad (5), and the relaxation pad (5) is a single-layer gasket in the shape of a thread.

2. The screw mold set according to claim 1, characterized in that: The inner wall of the upper sleeve (1) is provided with a fastening thread groove (6), the upper outer side of the rubber pad (3) is provided with a fastening thread convex strip (8), and the fastening thread groove (6) is meshingly connected with the fastening thread convex strip (8).

3. The screw mold set according to claim 1, characterized in that: The lower bottom surface of the gasket (2) is provided with a plurality of first anti-skid grooves (7) at equal intervals in the circumferential direction, and the top surface of the rubber pad (3) is provided with a plurality of anti-skid convex strips at equal intervals in the circumferential direction.

4. The screw mold set according to claim 3, characterized in that: The top surface of the upper cover plate (1) is provided with a plurality of protruding anti-slip bumps.

5. The screw mold set according to claim 4, characterized in that: The hole through which the upper sleeve (1) is penetrated is provided with a chamfer (4).

6. The screw mold set according to claim 1, characterized in that: The bottom surface of the rubber pad (3) is provided with a plurality of second anti-slip grooves (9) at equal intervals in the circumferential direction.

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