Core-pulling valve cover plate

Abstract

The utility model relates to the technical field of cover plates, in particular to a core-pulling valve cover plate which comprises a cover plate body, an upper elastic supporting plate and an anti-abrasion protection assembly. A sealing ring is arranged at the outer side end of the cover plate body; a cavity is formed in the cover plate body; the inner wall of the cavity is fixedly connected with a supporting reinforcing rib; the lower ends of the supporting reinforcing ribs are fixedly connected with inner base plates. And a plurality of fixed connecting blocks are annularly arranged at the lower end part of the inner base plate. Extrusion force is transmitted to the lower elastic supporting plate through the connecting pressure-bearing plate in the cover plate body, impact force is absorbed and buffered through elastic deformation generated by extrusion between the lower elastic supporting plate and the upper elastic supporting plate, and when the impact force is large, the impact column at the lower end of the fixed connecting block can extrude the elastic soft block on the lower portion, so that the impact force is reduced. The buffering effect can be further achieved through deformation of the elastic soft block, hard collision between the bottom cover plate and the valve element and other components is avoided, and the situation that the sealing performance is affected due to damage of the sealing face caused by long-term collision is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of cover plate especially relates to a core-pulling valve cover plate. BACKGROUND

[0002] Injection molding machine is widely used in the plastic processing industry, for producing various plastic products, such as household appliances, automobile parts, daily necessities, etc., and the core-pulling valve cover plate as an important part of injection molding machine mold, with the stable growth of injection molding machine market, its demand also remains stable accordingly.

[0003] The existing cover plate lacks elastic buffering structure at the bottom during use, which causes the sealing surface between the cover plate and the valve seat to be easily damaged by rigid impact, resulting in a decrease in sealing performance, and further possible medium leakage, affecting the normal use and working efficiency of the valve.

[0004] Therefore, the core-pulling valve cover plate is proposed to solve the problem of the existing cover plate lacking elastic buffering structure at the bottom, which causes the sealing surface to be damaged and affects the sealing performance. SUMMARY

[0005] In order to overcome the problem that the bottom of the cover plate lacks elastic buffering structure during use, which causes the sealing surface between the cover plate and the valve seat to be easily damaged by rigid impact, resulting in a decrease in sealing performance, and further possible medium leakage, affecting the normal use and working efficiency of the valve, therefore, a core-pulling valve cover plate is proposed.

[0006] The technical scheme of the utility model is as follows: a core-pulling valve cover plate, comprising a cover plate body, an upper elastic support plate and an anti-wear protection assembly; the outer side end of the cover plate body is provided with a sealing ring; the inside of the cover plate body is provided with a cavity; the inner wall of the cavity is fixedly connected with a support reinforcing rib; the lower end of the support reinforcing rib is fixedly connected with an inner backing plate; the lower end of the inner backing plate is annularly provided with a plurality of fixed connecting blocks.

[0007] As a preferred, the lower end of the fixed connecting block is fixedly connected with the upper elastic support plate; the lower end of the upper elastic support plate is hingedly connected with a lower elastic support plate; and the lower elastic support plate and the upper elastic support plate are symmetrically arranged.

[0008] As a preferred, the lower end of the lower elastic support plate is fixedly connected with a connecting pressure bearing plate; the lower end of the connecting pressure bearing plate is fixedly connected with a bottom cover plate; the upper end of the connecting pressure bearing plate is fixedly connected with an elastic soft block.

[0009] As a preferred, the lower end of the fixed connecting block is fixedly connected with an impact column; the lower end of the cover plate body is provided with a lower sealing gasket.

[0010] As a preferred, the anti-wear protection assembly comprises a containing groove, a pressure bearing spring, a sleeve seat and a sliding ball; a plurality of containing grooves are annularly formed in the side end outer wall of the cover plate body.

[0011] Preferably, a pressure spring is provided inside the accommodating groove; a side end portion of the pressure spring is fixedly connected to a ferrule seat.

[0012] Preferably, a damper is provided between the ferrule seat and the pressure spring; and a sliding ball is clamped inside the ferrule seat.

[0013] The beneficial effects of the present invention are as follows: during use of the cover plate, when the cover plate body is pressed down, the bottom cover plate at its bottom is squeezed, and then the squeezing force is transmitted to the lower elastic support plate through the internal connecting pressure plate, and the elastic deformation generated by the squeezing between the lower elastic support plate and the upper elastic support plate absorbs and buffers the impact force, thereby avoiding hard collision between the bottom cover plate and the valve core and other components, and when the impact force is large, the impact column at the lower end of the fixed connecting block will be squeezed toward the elastic soft block below, and the deformation of the elastic soft block can further play a buffering role. In the process of contact between the outer wall of the cover plate body and other components, the sliding ball inside the accommodating groove first contacts the surrounding components. When relative movement occurs or it is squeezed by external force, the sliding ball can roll in the ferrule seat, reducing friction with the inner wall of the valve seat. The pressure spring can automatically adjust the protrusion of the sliding ball according to the size of the external force, ensuring that the sliding ball always maintains a good contact state with the surrounding components, thereby effectively preventing the side end of the cover plate body from directly rubbing against other components to cause wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Shown is a schematic diagram of the three-dimensional structure of the cover plate of the present invention;

[0015] Figure 2 Shown is a schematic diagram of the three-dimensional structure of the inner pad of the cover plate of the present invention;

[0016] Figure 3 The utility model is shown Figure 2 A schematic diagram of the enlarged three-dimensional structure at point A in the middle;

[0017] Figure 4 Shown is a schematic diagram of the three-dimensional structure of the sliding ball of the cover plate of the present invention.

[0018] Explanation of the accompanying reference numerals: 1. Cover plate body; 2. Sealing ring; 201. Support reinforcement rib; 202. Inner pad; 203. Fixed connection block; 204. Upper elastic support plate; 205. Lower elastic support plate; 206. Connecting pressure plate; 207. Bottom cover plate; 208. Elastic soft block; 209. Impact column; 210. Lower sealing gasket; 101. Receiving groove; 102. Pressure spring; 103. Socket seat; 104. Sliding ball. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Please refer to Figures 1-4 The utility model provides an embodiment: a valve core pullout cover plate, including cover plate body 1, upper elastic support plate 204 and antiwear protection assembly, the outside end of cover plate body 1 is provided with sealing ring 2, the inside of cover plate body 1 is provided with cavity, the inner wall of cavity is fixedly connected with support stiffener 201, the lower end of support stiffener 201 is fixedly connected with inner backing plate 202, the lower end of inner backing plate 202 annularly is provided with a plurality of fixed connecting blocks 203, support stiffener 201 can strengthen the structural strength inside cover plate body 1, increase its service life.

[0021] Please refer to Figures 2-3 In this embodiment, the lower end of fixed connecting block 203 is fixedly connected with upper elastic support plate 204, the lower end of upper elastic support plate 204 is hingedly connected with lower elastic support plate 205, and lower elastic support plate 205 and upper elastic support plate 204 are symmetrically arranged, the lower end of lower elastic support plate 205 is fixedly connected with connecting pressure bearing plate 206, the lower end of connecting pressure bearing plate 206 is fixedly connected with bottom cover plate 207, the upper end of connecting pressure bearing plate 206 is fixedly connected with elastic soft block 208, the lower end of fixed connecting block 203 is fixedly connected with impact column 209, the lower end of cover plate body 1 is provided with lower sealing gasket 210, the elastic deformation generated between lower elastic support plate 205 and upper elastic support plate 204 is used to absorb and buffer impact force, avoid the hard collision between bottom cover plate 207 and valve core and other components, and when the impact force is larger, the impact column 209 at the lower end of fixed connecting block 203 will extrude the elastic soft block 208 downwards, and the deformation of elastic soft block 208 can further play a buffering role.

[0022] Please refer to Figure 4 In this embodiment, the antiwear protection assembly includes accommodating groove 101, pressure bearing spring 102, sleeve seat 103 and sliding ball 104, the side end outer wall of cover plate body 1 is annularly provided with a plurality of accommodating grooves 101, the inside of accommodating groove 101 is provided with pressure bearing spring 102, the side end of pressure bearing spring 102 is fixedly connected with sleeve seat 103, and a damper is arranged between sleeve seat 103 and pressure bearing spring 102, the inside of sleeve seat 103 is clamped with sliding ball 104, sliding ball 104 can roll in sleeve seat 103, reduce the friction with the periphery of valve seat inner wall, pressure bearing spring 102 can automatically adjust the protrusion degree of sliding ball 104 according to the size of external force, ensure that sliding ball 104 always maintains good contact state with surrounding components.

[0023] When the cover plate body 1 is pressed down during work, the bottom cover plate 207 at the bottom is extruded, the extrusion force is transmitted to the lower elastic support plate 205 through the connecting pressure bearing plate 206, the lower elastic support plate 205 and the upper elastic support plate 204 are elastically deformed by mutual extrusion, so as to absorb and buffer the impact force, prevent the bottom cover plate 207 and the valve core and other components from hard collision, if the impact force is large, the impact column 209 at the lower end of the fixed connecting block 203 will extrude the elastic soft block 208, and further buffer by the deformation thereof, and when the outer wall of the cover plate body 1 contacts other components, the sliding ball 104 in the accommodating groove 101 first contacts the surrounding components, when relative motion occurs or is extruded by external force, the sliding ball 104 can roll in the sleeve seat 103, reducing the friction with the surrounding inner wall of the valve seat, the pressure spring 102 can automatically adjust the protrusion degree of the sliding ball 104 according to the size of the external force, ensuring that the sliding ball 104 is in good contact with the surrounding components, and effectively avoiding the direct friction between the side end of the cover plate body 1 and other components to generate wear.

[0024] Through the above steps, the problem that the existing cover plate bottom lacks elastic buffer structure, causing the sealing surface to be damaged and affecting the sealing performance is solved, the extrusion force is transmitted to the lower elastic support plate 205 through the connecting pressure bearing plate 206 in the cover plate body 1, the elastic deformation generated by the extrusion between the lower elastic support plate 205 and the upper elastic support plate 204 is used to absorb and buffer the impact force, avoiding the hard collision between the bottom cover plate 207 and the valve core and other components, and avoiding the damage of the sealing surface due to long-term collision to affect the sealing performance.

[0025] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by those skilled in the art without departing from the purpose of the utility model.

Claims

1. A core-pulling valve cover plate, comprising a cover plate body (1); characterized in that: The cover plate (1) further comprises an upper elastic support plate (204) and an anti-wear protection component; a sealing ring (2) is provided at the outer end of the cover plate body (1); a cavity is provided inside the cover plate body (1); a support reinforcement rib (201) is fixedly connected to the inner wall of the cavity; an inner pad (202) is fixedly connected to the lower end of the support reinforcement rib (201); and a plurality of fixed connection blocks (203) are provided in an annular manner at the lower end of the inner pad (202).

2. The core-pulling valve cover plate according to claim 1, characterized in that: The lower end of the fixed connection block (203) is fixedly connected to an upper elastic support plate (204); the lower end of the upper elastic support plate (204) is hingedly connected to a lower elastic support plate (205); and the lower elastic support plate (205) and the upper elastic support plate (204) are symmetrically arranged up and down.

3. The core-pulling valve cover plate according to claim 1, characterized in that: The lower end of the lower elastic support plate (205) is fixedly connected to a connecting pressure plate (206); the lower end of the connecting pressure plate (206) is fixedly connected to a bottom cover plate (207); and the upper end of the connecting pressure plate (206) is fixedly connected to an elastic soft block (208).

4. The core-pulling valve cover plate according to claim 3, characterized in that: The lower end of the fixed connection block (203) is fixedly connected to an impact column (209); and the lower end of the cover plate body (1) is provided with a lower sealing gasket (210).

5. The core-pulling valve cover plate according to claim 1, characterized in that: The anti-wear protection component comprises a receiving groove (101), a pressure-bearing spring (102), a sleeve seat (103) and a sliding ball (104); a plurality of receiving grooves (101) are annularly provided on the outer wall of the side end of the cover body (1).

6. The core-pulling valve cover plate according to claim 1, characterized in that: A pressure-bearing spring (102) is provided inside the accommodating groove (101); a side end portion of the pressure-bearing spring (102) is fixedly connected to a ferrule seat (103).

7. The core-pulling valve cover plate according to claim 6, characterized in that: A damper is provided between the ferrule seat (103) and the pressure-bearing spring (102); and a sliding ball (104) is clamped inside the ferrule seat (103).

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