Fixed mold side demolding structure of inverted mold

Abstract

The utility model relates to a fixed mold side demolding structure of an inverted mold, which comprises a movable mold seat, a fixed mold seat and an ejector plate, and a guide component and an elastic reset piece are arranged on the movable mold seat; a first pull rod for driving the ejector plate to move downwards is longitudinally and movably arranged on the movable mold base in a penetrating manner; a second pull rod opposite to the first pull rod is longitudinally and movably arranged on the fixed mold base in a penetrating manner; the upper end of the second pull rod is detachably connected with the lower end of the first pull rod; the first pull rod and the second pull rod are combined to form the linkage assembly, meanwhile, the first pull rod and the second pull rod have movable distances relative to the movable mold base and the fixed mold base correspondingly, after mold opening reaches the mold opening distance, the movable mold base continues to move upwards, the second pull rod pulls the first pull rod to stop moving upwards, and the first pull rod acts on the ejector plate; therefore, the purpose that driving force is applied from the fixed mold side to drive the ejector plate to act is achieved, the whole structure is very simple, cost is low, and the effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, and more specifically to a demoulding structure of a fixed mold side of an inverted mold. Background Art

[0002] When injecting some products with very high requirements on the surface of parts (such as automobile shells), flip molds are often used. The difference between flip molds and conventional injection molds is that the ejector plate is arranged on the top, and the product is ejected from top to bottom. In the existing mold structure, in order to provide power for the ejector plate, it is usually necessary to design a cylinder on the movable mold side to drive the ejector plate to eject, such as the Chinese patent, application number CN201820130447.4 flip mold and injection molding machine. This design will make the movable mold significantly heavier and the structure more complicated. A flip mold fixed mold side demolding structure that can drive the ejector plate from the fixed mold side is required. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a demoulding structure of the fixed mold side of an inverted mold in view of the above-mentioned defects of the prior art.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A demolding structure for the fixed mold side of an inverted mold is constructed, which includes a movable mold seat, a fixed mold seat and an ejector plate, wherein the movable mold seat is provided with a guide assembly for guiding the longitudinal movement of the ejector plate and an elastic reset member for resetting the ejector plate after movement; a first pull rod is longitudinally movably penetrated through the movable mold seat for driving the ejector plate to move downward; a second pull rod is longitudinally movably penetrated through the fixed mold seat and is directly opposite to the first pull rod, and the upper end of the second pull rod is detachably connected to the lower end of the first pull rod; when opening the mold, the first pull rod has a first movable distance relative to the movable mold seat, and the second pull rod has a second movable distance relative to the fixed mold seat, and the sum of the first movable distance and the second movable distance is the mold opening distance.

[0006] The utility model discloses a demolding structure for the fixed mold side of an inverted mold, wherein the movable mold seat is provided with a first movable hole cooperating with the first pull rod; the first pull rod includes a first rod body and a first limit block located at the upper end of the first rod body, and the outer diameter of the first limit block is larger than the outer diameter of the first rod body; the ejector plate is provided with a through hole cooperating with the first rod body.

[0007] The demoulding structure of the fixed mold side of the flip mold described in the utility model is characterized in that the upper end of the first movable hole is communicated with the upper surface of the movable mold seat.

[0008] The utility model describes a demolding structure on the fixed mold side of an inverted mold, wherein the fixed mold seat is provided with a second movable hole that cooperates with the second pull rod; the second pull rod includes a second rod shaft and a second limit block located at the lower end of the second rod shaft, and the outer diameter of the second limit block is larger than the outer diameter of the second rod shaft; the fixed mold seat is provided with a third movable hole that cooperates with the second rod shaft, and the third movable hole is connected to the second movable hole and the upper surface of the fixed mold seat.

[0009] The demoulding structure of the fixed mold side of the inverted mold described in the utility model is characterized in that the lower end of the second movable hole is communicated with the lower surface of the fixed mold seat.

[0010] In the demoulding structure on the fixed mold side of the inverted mold described in the utility model, the outer diameter of the first rod shaft is equal to the outer diameter of the second rod shaft.

[0011] The demoulding structure of the fixed mold side of the inverted mold described in the utility model, wherein, one of the lower end of the first rod body and the upper end of the second rod body is provided with a connecting rod, and the other is provided with a connecting groove matched with the connecting rod.

[0012] In the demoulding structure of the fixed mold side of the inverted mold described in the utility model, the connecting rod and the connecting groove are connected by interference fit or by thread fit.

[0013] The beneficial effect of the utility model is that the first pull rod and the second pull rod are combined to form a linkage component, and at the same time, the first pull rod and the second pull rod have a movable spacing relative to the movable mold base and the fixed mold base respectively to avoid affecting the mold opening. When the mold opening reaches the mold opening distance, the movable mold base continues to move upward, and the second pull rod will pull the first pull rod to stop it from moving upward. The first pull rod acts on the ejector plate to make the ejector plate move downward relative to the movable mold base to eject the product, thereby achieving the purpose of applying a driving force from the fixed mold side to drive the ejector plate to move. The overall structure is very simple, easy to disassemble and assemble, low in cost, and good in effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work:

[0015] Figure 1 It is a schematic diagram of the demoulding structure of the fixed mold side of the inverted mold in a preferred embodiment of the utility model. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the following will be combined with the technical solution in the embodiments of the utility model for a clear and complete description. Obviously, the described embodiments are partial embodiments of the utility model, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] The demoulding structure of the fixed mold side of the inverted mold in the preferred embodiment of the utility model is as follows Figure 1 As shown, it comprises a movable die seat 1, a fixed die seat 2 and an ejector plate 3, the movable die seat 1 is provided with a guide assembly 10 for longitudinally moving and guiding the ejector plate 3 and an elastic reset member 11 for resetting the ejector plate after the movement; a first tie rod 4 for driving the ejector plate to move downward is longitudinally movably penetrated on the movable die seat 1; a second tie rod 5 for longitudinally movably penetrated on the fixed die seat 2 and directly opposite to the first tie rod 4, and the upper end of the second tie rod 5 is detachably connected to the lower end of the first tie rod 4; when opening the mold, the first tie rod 4 has a first moving distance relative to the movable die seat, and the second tie rod has a second moving distance relative to the fixed die seat, and the sum of the first moving distance and the second moving distance is the mold opening distance;

[0018] The first tie rod 4 and the second tie rod 5 are combined to form a linkage component. At the same time, the first tie rod 4 and the second tie rod 5 have a movable spacing relative to the movable mold base 1 and the fixed mold base 2 respectively to avoid affecting the mold opening. When the mold opening reaches the mold opening distance, the movable mold base 1 continues to move upward, and the second tie rod 5 will pull the first tie rod 4 to stop it from moving upward. The first tie rod 4 acts on the ejector plate 3, so that the ejector plate 3 moves downward relative to the movable mold base 1 to eject the product, thereby achieving the purpose of applying a driving force from the fixed mold side to drive the ejector plate to move. The overall structure is very simple, easy to disassemble and assemble, low cost, and good effect.

[0019] Preferably, the movable mold base 1 is provided with a first movable hole 12 that cooperates with the first pull rod 4; the first pull rod 4 includes a first rod body 40 and a first limit block 41 located at the upper end of the first rod body 40, and the outer diameter of the first limit block 41 is larger than the outer diameter of the first rod body 40; the ejector plate 3 is provided with a through hole 30 that cooperates with the first rod body 40; the upper end of the first movable hole 12 is connected to the upper surface of the movable mold base 1; when the mold is closed, the distance from the first limit block 41 to the ejector plate 3 is the first movable distance, the structure is simple, the assembly is very convenient, and it is easy to process; preferably, when the mold is closed, the upper end height of the first limit block 41 is lower than the upper surface height of the movable mold base 1, or the upper end of the first limit block 41 is flush with the upper surface of the movable mold base 1.

[0020] Preferably, the fixed mold base 2 is provided with a second movable hole 20 cooperating with the second pull rod 5; the second pull rod 5 includes a second rod shaft 50 and a second limit block 51 located at the lower end of the second rod shaft 50, and the outer diameter of the second limit block 51 is larger than the outer diameter of the second rod shaft 50; the fixed mold base 2 is provided with a third movable hole 21 cooperating with the second rod shaft 50, and the third movable hole 21 is connected with the second movable hole 20 and the upper surface of the fixed mold base 2; the lower end of the second movable hole 20 is connected with the lower surface of the fixed mold base 2.

[0021] Preferably, the outer diameter of the first shaft 40 is equal to the outer diameter of the second shaft 50, so that the first shaft 40 can partially enter the third movable hole 21 during mold opening, thereby ensuring the stability of mold opening.

[0022] Preferably, one of the lower end of the first shaft 40 and the upper end of the second shaft 50 is provided with a connecting rod 500, and the other is provided with a connecting groove 400 that cooperates with the connecting rod. The connecting rod 500 and the connecting groove 400 are connected by interference fit or by threaded fit; the structure is simple, easy to assemble and low cost.

[0023] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

Claims

1. A demoulding structure for the fixed mold side of an inverted mold, characterized in that: It includes a movable mold base, a fixed mold base and an ejector plate, wherein the movable mold base is provided with a guide assembly for guiding the longitudinal movement of the ejector plate and an elastic reset member for resetting the ejector plate after movement; a first pull rod is longitudinally movably penetrated through the movable mold base to drive the ejector plate to move downward; a second pull rod is longitudinally movably penetrated through the fixed mold base to face the first pull rod, and the upper end of the second pull rod is detachably connected to the lower end of the first pull rod; when opening the mold, the first pull rod has a first movable distance relative to the movable mold base, and the second pull rod has a second movable distance relative to the fixed mold base, and the sum of the first movable distance and the second movable distance is the mold opening distance.

2. The demoulding structure of the fixed mold side of the flip mold according to claim 1, characterized in that: The movable mold base is provided with a first movable hole that cooperates with the first pull rod; the first pull rod includes a first rod body and a first limit block located at the upper end of the first rod body, and the outer diameter of the first limit block is larger than the outer diameter of the first rod body; the ejector plate is provided with a through hole that cooperates with the first rod body.

3. The demoulding structure of the fixed mold side of the flip mold according to claim 2, characterized in that: The upper end of the first movable hole is communicated with the upper surface of the movable mold base.

4. The demoulding structure of the fixed mold side of the flip mold according to claim 2 or 3, characterized in that: The fixed mold seat is provided with a second movable hole cooperating with the second pull rod; the second pull rod includes a second rod shaft and a second limit block located at the lower end of the second rod shaft, and the outer diameter of the second limit block is larger than the outer diameter of the second rod shaft; the fixed mold seat is provided with a third movable hole cooperating with the second rod shaft, and the third movable hole is connected with the second movable hole and the upper surface of the fixed mold seat.

5. The demoulding structure of the fixed mold side of the flip mold according to claim 4, characterized in that: The lower end of the second movable hole is communicated with the lower surface of the fixed mold base.

6. The demoulding structure of the fixed mold side of the flip mold according to claim 4, characterized in that: An outer diameter of the first shaft is equal to an outer diameter of the second shaft.

7. The demoulding structure of the fixed mold side of the flip mold according to claim 4, characterized in that: One of the lower end of the first rod shaft and the upper end of the second rod shaft is provided with a connecting rod, and the other is provided with a connecting groove matched with the connecting rod.

8. The demoulding structure of the fixed mold side of the flip mold according to claim 7, characterized in that: The connecting rod is connected to the connecting groove by interference fit or by thread fit.

Images