Gas-assisted core-pulling ejection mechanism of large furniture injection mold

Abstract

The utility model relates to the technical field of molds, in particular to a gas-assisted core-pulling ejection mechanism of a large furniture injection mold, which comprises an upper mold frame and a lower mold frame, a pneumatic core-pulling ejection structure is connected onto the lower mold frame, and positioning structures are connected onto the side walls of the upper mold frame and the lower mold frame. The pneumatic core-pulling ejection structure comprises two groups of backward pushing air cylinders, two groups of forward pushing air cylinders and two groups of reset air cylinders, and the two groups of backward pushing air cylinders are symmetrically connected to the side wall of the lower mold frame through bolts. By means of the design that a rear pushing air cylinder, a front pushing air cylinder and a reset air cylinder in the pneumatic core-pulling ejection structure enable the large furniture to be subjected to rapid mold splitting and ejection through a transmission structure, mold splitting work of the large furniture can be rapidly conducted, and the device is more convenient to use; therefore, the problem that large furniture cannot be quickly split and ejected is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a gas-assisted core-pulling ejection mechanism for a large-scale furniture injection mold. Background Art

[0002] The current injection mold is not convenient for mold separation and ejection during use, which makes it inconvenient to demold the device during use. At the same time, the injection mold is not very precise when closing the mold, which affects the quality of the product. In view of the above problems, it is necessary to provide a gas-assisted core-pulling ejection mechanism for large furniture injection molds. Utility Model Content

[0003] The utility model aims to provide a gas-assisted core-pulling ejection mechanism for a large-scale furniture injection mold to solve the problems raised in the above-mentioned background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A gas-assisted core-pulling ejection mechanism for a large furniture injection mold comprises an upper mold frame and a lower mold frame, the lower mold frame is connected to a pneumatic core-pulling ejection structure, and the side walls of the upper mold frame and the lower mold frame are connected to positioning structures;

[0006] The pneumatic core-pulling ejection structure comprises two groups of rear-pushing cylinders, a front-pushing cylinder and two groups of reset cylinders, the two groups of rear-pushing cylinders are symmetrically connected to the side wall of the lower mold frame by bolts, the driving end of the rear-pushing cylinder is connected to a rear movable connecting plate, the rear movable connecting plate is symmetrically connected to a rear axis core rod, the front-pushing cylinder is connected to a front movable connecting plate, the front movable connecting plate is connected to the side wall of the lower mold frame, the front movable connecting plate is symmetrically connected to a front axis core rod, the driving end of the front-pushing cylinder is connected to a double-layer ejector plate, the side wall of the double-layer ejector plate is connected to an ejector cylinder, and the other side of the double-layer ejector plate is connected to multiple groups of ejectors, the two groups of reset cylinders are symmetrically connected to the side wall of the lower mold frame by bolts, the driving end of the reset cylinder is connected to a guide block, and an oblique chamfer is provided on the side wall of the rear movable connecting plate and corresponding to the guide block;

[0007] The positioning structure includes a fixed connection seat, which is connected to the side wall of the lower mold frame, a limiting guide column is connected to the end surface of the fixed connection seat, the limiting guide column is connected to the limiting connection seat, and the limiting connection seat is connected to the side wall of the upper mold frame.

[0008] As a preferred solution of the utility model, a slide groove is provided on the side wall of the lower mold frame and corresponds to the rear movable connecting plate, wherein the rear movable connecting plate and the slide groove are connected in a sliding manner.

[0009] As a preferred solution of the utility model, a connecting hole is arranged on the side wall of the lower mold frame and corresponds to the front axle core rod, wherein the front axle core rod and the connecting hole are connected in a sliding manner.

[0010] As a preferred solution of the utility model, a connecting hole is arranged on the lower mold frame and corresponds to the rear axle core rod, wherein the rear axle core rod and the connecting hole are connected in a sliding manner.

[0011] As a preferred solution of the utility model, a limiting hole is provided on the limiting connection seat and corresponds to the limiting guide pillar, wherein the matching mode of the limiting guide pillar and the limiting hole is a clearance match. Compared with the prior art, the beneficial effects of the utility model are:

[0012] In the utility model, a pneumatic core-pulling ejection structure is arranged in the gas-assisted core-pulling ejection mechanism of the large-scale furniture injection mold, so that the large-scale furniture can be quickly demolded and ejected by utilizing the rear push cylinder, the front push cylinder and the reset cylinder in the pneumatic core-pulling ejection structure through the transmission structure. Therefore, during the use of the gas-assisted core-pulling ejection mechanism of the large-scale furniture injection mold, the large-scale furniture can be quickly demolded, making the device more convenient when in use, thereby solving the problem that the large-scale furniture cannot be quickly demolded and ejected.

[0013] In the utility model, a positioning structure is provided in the gas-assisted core-pulling ejection mechanism of the large furniture injection mold, so that the fixed connection seat, the limiting guide column and the limiting connection seat in the positioning structure interact with each other, so that the design that the mold can be accurately positioned when the mold is closed is realized, so that during the use of the gas-assisted core-pulling ejection mechanism of the large furniture injection mold, the mold can be accurately positioned when the mold is closed, thereby improving the quality of the product and solving the problem that the mold cannot be accurately positioned when the mold is closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the front and side structures of the utility model;

[0015] Figure 2 This is a structural schematic diagram of the pneumatic core-pulling ejection structure of the utility model;

[0016] Figure 3 For this utility model Figure 2 Schematic diagram of some structures;

[0017] Figure 4 for Figure 3 A is a schematic diagram of the enlarged structure of the middle part;

[0018] Figure 5 It is a structural schematic diagram of the positioning structure of the utility model.

[0019] In the figure: 1. upper mold frame; 2. lower mold frame; 3. pneumatic core-pulling ejection structure; 4. positioning structure; 301. rear push cylinder; 302. front push cylinder; 303. reset cylinder; 304. rear movable connecting plate; 305. rear axle core rod; 306. front movable connecting plate; 307. front axle core rod; 308. double-layer ejector plate; 309. ejector cylinder; 310. ejector; 311. guide block; 312. oblique chamfer; 401. fixed connecting seat; 402. limit guide column; 403. limit connecting seat. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings, and several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0022] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this article includes any and all combinations of one or more related listed items.

[0024] For example, please refer to Figure 1-5 , the utility model provides a technical solution:

[0025] A gas-assisted core-pulling ejection mechanism for a large furniture injection mold comprises an upper mold frame 1 and a lower mold frame 2, a pneumatic core-pulling ejection structure 3 is connected to the lower mold frame 2, and a positioning structure 4 is connected to the side walls of the upper mold frame 1 and the lower mold frame 2;

[0026] In this embodiment, reference Figure 1 , Figure 2 and Figure 4 The pneumatic core-pulling ejection structure 3 includes two groups of rear-pushing cylinders 301, a front-pushing cylinder 302 and two groups of reset cylinders 303. The two groups of rear-pushing cylinders 301 are symmetrically connected to the side wall of the lower mold frame 2 by bolts. The driving end of the rear-pushing cylinder 301 is connected to a rear movable connecting plate 304, and the rear movable connecting plate 304 is symmetrically connected to a rear shaft core rod 305. The front-pushing cylinder 302 is connected to a front movable connecting plate 306, which is connected to the side wall of the lower mold frame 2, and the front movable connecting plate 306 is symmetrically connected to a front shaft core rod 306. The core rod 307, the driving end of the forward push cylinder 302 is connected to a double-layer ejector plate 308, the side wall of the double-layer ejector plate 308 is connected to an ejector cylinder 309, the other side of the double-layer ejector plate 308 is connected to multiple groups of ejectors 310, two groups of reset cylinders 303 are symmetrically connected to the side wall of the lower mold frame 2 by bolts, the driving end of the reset cylinder 303 is connected to a guide block 311, and an oblique chamfer 312 is provided on the side wall of the rear moving connecting plate 304 and corresponding to the guide block 311, and the rear push cylinder 301 is started by the controller, The forward push cylinder 302 moves the driving ends of the rear push cylinder 301 and the forward push cylinder 302. At the same time, a slide groove is provided on the side wall of the lower mold frame 2 and opposite to the rear movable connecting plate 304, wherein the rear movable connecting plate 304 is connected to the slide groove in a sliding manner, and a connecting hole is provided on the side wall of the lower mold frame 2 and corresponding to the front axle core rod 307, wherein the connection mode of the front axle core rod 307 and the connecting hole is a sliding connection, and a connecting hole is provided on the lower mold frame 2 and corresponding to the rear axle core rod 305, wherein the rear axle core rod 305 and the connecting hole Under the condition that the connection mode is a sliding connection, the corresponding rear movable connecting plate 304, the front movable connecting plate 306, the rear shaft core rod 305 and the front shaft core rod 307 are moved, so as to realize the core pulling of the four legs of the chair. After the core pulling rod completes the core pulling, the ejector cylinder 309 is started by the controller, and then the double-layer ejector plate 308 and the ejector 310 are pushed to one side, and then the chair is ejected. Finally, the reset cylinder 303 is started by the controller, so as to control the movement of the guide block 311, and then help the rear core pulling rod to be fixed in place;

[0027] Further, a slide groove is provided on the side wall of the lower mold frame 2 and corresponds to the rear movable connecting plate 304, wherein the connection mode between the rear movable connecting plate 304 and the slide groove is a sliding connection, and a connecting hole is provided on the side wall of the lower mold frame 2 and corresponds to the front axle core rod 307, wherein the connection mode between the front axle core rod 307 and the connecting hole is a sliding connection, and a connecting hole is provided on the lower mold frame 2 and corresponds to the rear axle core rod 305, wherein the connection mode between the rear axle core rod 305 and the connecting hole is a sliding connection, so that the device is smoother during use;

[0028] In this embodiment, reference Figure 1 , Figure 2 ,and Figure 5 The positioning structure 4 includes a fixed connection seat 401, which is connected to the side wall of the lower mold frame 2, and a limited guide pillar 402 is connected to the end surface of the fixed connection seat 401, and a limited connection seat 403 is connected to the limited guide pillar 402. The limited connection seat 403 is connected to the side wall of the upper mold frame 1, and a limited hole is provided on the limited connection seat 403 and corresponding to the limited guide pillar 402, wherein the matching mode of the limited guide pillar 402 and the limited hole is a clearance match, so that the positioning can be accurately performed when the mold is closed, and the device is more accurate when used;

[0029] Furthermore, a limiting hole is provided on the limiting connection seat 403 and corresponds to the limiting guide post 402 , wherein the limiting guide post 402 and the limiting hole are matched in a clearance fit, so that the device can be used more smoothly.

[0030] The working process of the utility model is as follows: when using the gas-assisted core-pulling ejection mechanism of a large furniture injection mold, the rear push cylinder 301 and the front push cylinder 302 are started by the controller, so that the driving ends of the rear push cylinder 301 and the front push cylinder 302 move, and at the same time, a slide groove is provided on the side wall of the lower mold frame 2 and corresponds to the rear movable connecting plate 304, wherein the connection mode of the rear movable connecting plate 304 and the slide groove is a sliding connection, and a connecting hole is provided on the side wall of the lower mold frame 2 and corresponds to the front shaft core rod 307, wherein the connection mode of the front shaft core rod 307 and the connecting hole is a sliding connection, and the lower mold frame 2 and the rear shaft core rod 307 are connected to the connecting hole. 05 is provided with a connecting hole, wherein the connection mode between the rear axle core rod 305 and the connecting hole is a sliding connection, so that the corresponding rear movable connecting plate 304, the front movable connecting plate 306, the rear axle core rod 305 and the front axle core rod 307 move, thereby realizing the core pulling of the four legs of the chair. After the core pulling rod completes the core pulling, the ejector cylinder 309 is started by the controller, thereby pushing the double-layer ejector plate 308 and the ejector 310 to move to one side, and then ejecting the chair. Finally, the reset cylinder 303 is started by the controller, thereby controlling the movement of the guide block 311, and then helping the rear core pulling rod to be fixed in place;

[0031] When the mold is closed, a limiting hole is opened on the limiting connecting seat 403 and corresponds to the limiting guide column 402, wherein the limiting guide column 402 and the limiting hole are matched in a clearance fit condition, so that the mold can be accurately positioned when closed, making the device more accurate when used.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gas-assisted core-pulling ejection mechanism for a large furniture injection mold, comprising an upper mold frame (1) and a lower mold frame (2), characterized in that: The lower mold frame (2) is connected to a pneumatic core-pulling ejection structure (3), and the side walls of the upper mold frame (1) and the lower mold frame (2) are connected to a positioning structure (4); The pneumatic core-pulling ejection structure (3) comprises two groups of rear-pushing cylinders (301), a front-pushing cylinder (302) and two groups of reset cylinders (303). The two groups of rear-pushing cylinders (301) are symmetrically connected to the side wall of the lower mold frame (2) by bolts. The driving end of the rear-pushing cylinder (301) is connected to a rear movable connecting plate (304), and the rear movable connecting plate (304) is symmetrically connected to a rear shaft core rod (305). The front-pushing cylinder (302) is connected to a front movable connecting plate (306), and the front movable connecting plate (306) is connected to the side wall of the lower mold frame (2). The front movable connecting plate (306) is connected to the side wall of the lower mold frame (2). ) is symmetrically connected to a front shaft core rod (307), the driving end of the forward push cylinder (302) is connected to a double-layer ejector plate (308), the side wall of the double-layer ejector plate (308) is connected to an ejector cylinder (309), the other side of the double-layer ejector plate (308) is connected to multiple groups of ejectors (310), two groups of reset cylinders (303) are symmetrically connected to the side wall of the lower mold frame (2) by bolts, the driving end of the reset cylinder (303) is connected to a guide block (311), and an oblique chamfer (312) is provided on the side wall of the rear movable connecting plate (304) and corresponding to the guide block (311); The positioning structure (4) comprises a fixed connection seat (401), the fixed connection seat (401) is connected to the side wall of the lower mold frame (2), the end surface of the fixed connection seat (401) is connected to a limiting guide column (402), the limiting guide column (402) is connected to a limiting connection seat (403), and the limiting connection seat (403) is connected to the side wall of the upper mold frame (1).

2. The gas-assisted core-pulling ejection mechanism for a large furniture injection mold according to claim 1, characterized in that: A sliding groove is provided on the side wall of the lower mold frame (2) and corresponds to the rear movable connecting plate (304), wherein the rear movable connecting plate (304) is connected to the sliding groove in a sliding manner.

3. The gas-assisted core-pulling ejection mechanism for a large furniture injection mold according to claim 1, characterized in that: A connecting hole is provided on the side wall of the lower mold frame (2) and corresponds to the front axle core rod (307), wherein the front axle core rod (307) and the connecting hole are connected in a sliding manner.

4. The gas-assisted core-pulling ejection mechanism for a large furniture injection mold according to claim 1, characterized in that: A connecting hole is provided on the lower mold frame (2) and corresponds to the rear axle core rod (305), wherein the rear axle core rod (305) and the connecting hole are connected in a sliding manner.

5. The gas-assisted core-pulling ejection mechanism for a large furniture injection mold according to claim 1, characterized in that: A limiting hole is provided on the limiting connection seat (403) and corresponds to the limiting guide pillar (402), wherein the limiting guide pillar (402) and the limiting hole are matched in a clearance fit.

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