Plastic chair mould with integrated large-angle ejection mechanism

Abstract

The utility model provides a plastic chair mold with an integral large-angle ejection mechanism, which belongs to the technical field of molds. It includes an upper mold, a lower mold, and an intermediate mold that is obliquely arranged between the upper mold and the lower mold, and a plastic chair molding cavity is formed between the upper mold, the intermediate mold, and the lower mold. The plastic chair molding cavity composed of a back molding part, an armrest molding part, a seat molding part, a front leg molding part, and a rear leg molding part can be integrally injection molded to form a plastic chair product. The detachable side insert mechanism at the armrest molding part can be quickly replaced when damaged, which can improve the efficiency of maintenance and replacement. After the product is injection molded, the plastic chair product can be integrally ejected and demolded from the intermediate mold through the integral ejection mechanism.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds and relates to a plastic chair mold with an integral large-angle ejection mechanism. Background Art

[0002] Plastic chair molds are generally formed by injection molding. At present, the plastic chair mold is provided with side inserts and side core pulling mechanisms at the armrests of the plastic chair. However, the disassembly process of the side inserts and the side core pulling mechanisms in the prior art is relatively complicated, and the efficiency of repair and replacement after damage is low.

[0003] For example, a Chinese patent discloses a plastic chair mold ejection mechanism [application number: 200920113299.6], which includes a cavity, a movable mold and a core. The cavity is formed between the cavity, the movable mold and the core. A gate and a hot runner are formed in the cavity. A hot runner plate and a hot runner pressure plate are installed at the hot runner port. A positioning ring is arranged in the hot runner pressure plate. It is characterized in that an oil cylinder is installed in the core, an ejector block is installed in the cavity, an oil injection hole of the oil cylinder cooperates with the ejector block, a gate insert is installed in the core, the gate insert cooperates with the hot runner nozzle with an inclined surface, and the ejector block contacts the gate insert. Utility Model Content

[0004] The utility model aims to solve the above problems and provides a plastic chair mould with an integral large-angle ejection mechanism.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A plastic chair mold with an integral large-angle ejection mechanism comprises an upper template, a lower template and an intermediate template obliquely arranged between the upper template and the lower template, a plastic chair molding cavity is formed between the upper template, the intermediate template and the lower template, the plastic chair molding cavity comprises a back molding portion arranged between the upper template and the lower template, an armrest molding portion arranged on the lower template, a seat molding portion and a front leg molding portion arranged between the intermediate template and the lower template, and a rear leg molding portion arranged between the intermediate template and the upper template, a detachable side panel mechanism connected to the armrest molding portion is arranged on the intermediate template, and an integral ejection mechanism is arranged on the intermediate template.

[0007] In the above-mentioned plastic chair mold with an integral large-angle ejection mechanism, the detachable side panel mechanism includes a side panel that slides with the middle template through a sliding limit structure, the armrest forming portion is recessed inwardly and formed on the inner wall of the side panel, and also includes a detachable side core pulling assembly arranged on the middle template, and the side core pulling assembly is detachably connected to the side panel through a detachable connecting structure.

[0008] In the above-mentioned plastic chair mold with an integral large-angle ejection mechanism, the side core pulling assembly includes a linear drive fixed on a drive mounting seat, the drive mounting seat is detachably fixed to the middle template by a plurality of bolts, the linear drive is horizontally arranged and perpendicular to the side wall of the middle template, and the output shaft end of the linear drive is connected to the side insert by a detachable connecting structure.

[0009] In the above-mentioned plastic chair mold with an integral large-angle ejection mechanism, the detachable connection structure includes a connecting groove recessed inwardly on the outer wall of the side insert, and the output shaft end of the linear drive is inserted into the connecting groove and slidably cooperates with the connecting groove.

[0010] In the above-mentioned plastic chair mold with an integral large-angle ejection mechanism, the cross-sections of the connecting slide groove and the output shaft end of the linear drive are both T-shaped.

[0011] In the above-mentioned plastic chair mold with an integral large-angle ejection mechanism, both ends of the connecting slide groove penetrate the side inserts.

[0012] In the above-mentioned plastic chair mold with an integral large-angle ejection mechanism, the sliding limiting structure includes two parallel L-shaped sliders, the L-shaped sliders are arranged parallel to the linear drive, and the side panel is recessed inwardly with an L-shaped slide groove corresponding to the L-shaped slider, and the L-shaped slider is inserted into the L-shaped slide groove.

[0013] In the above-mentioned plastic chair mold with an integral large-angle ejection mechanism, the L-shaped sliding block is detachably fixed to the middle mold plate by a plurality of bolts.

[0014] In the above-mentioned plastic chair mold with an integral large-angle ejection mechanism, the integral ejection mechanism includes an ejection cavity arranged in the middle template, a top plate is arranged in the ejection cavity, a plurality of ejector rods connected to the seat forming part are fixedly connected to the top plate, an inclined ejector driver is fixedly connected to the outer end surface of the middle template, the ejector driver is arranged parallel to the ejector rod and the output shaft end of the ejector driver is fixedly connected to the top plate.

[0015] In the above-mentioned plastic chair mold with an integral large-angle ejection mechanism, vertically arranged lifting drives are fixedly connected to both sides of the middle template, and the output shaft end of the lifting drive is fixedly connected to the upper template through an adapter.

[0016] Compared with the existing technology, the advantages of the utility model are:

[0017] 1. The plastic chair molding cavity composed of the back molding part, the armrest molding part, the seat molding part, the front leg molding part and the rear leg molding part can be integrally injection molded to form a plastic chair product. The detachable side panel mechanism at the armrest molding part can be quickly replaced when damaged, which can improve the efficiency of maintenance and replacement. After the product is injection molded, the plastic chair product can be integrally ejected from the middle template through the integral ejection mechanism.

[0018] 2. The side panels and side core pull-out assemblies that constitute the detachable side panel mechanism can be quickly disassembled. Secondly, the side panels and the middle template, as well as the side core pull-out assembly and the middle template are also detachably connected, which can facilitate the overall disassembly and replacement of the detachable side panel mechanism or the independent disassembly and replacement of each component in the detachable side panel mechanism.

[0019] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the external structure of the utility model;

[0021] Figure 2 It is a cross-sectional view of the utility model;

[0022] Figure 3 It is a schematic diagram of the structure of the middle template and the lower template;

[0023] Figure 4 It is a schematic diagram of the structure at the middle template;

[0024] Figure 5 It is a partial structural diagram of the integral ejection mechanism.

[0025] In the figure, an upper template 1, a lower template 2, a middle template 3, a plastic chair molding cavity 4, a chair back molding part 5, an armrest molding part 6, a chair seat molding part 7, a front chair leg molding part 8, a rear chair leg molding part 9, a detachable side panel mechanism 10, an integral ejection mechanism 11, a side panel 12, a driver mounting seat 13, a linear driver 14, a connecting slide 15, an L-shaped slider 16, an L-shaped slide 17, an ejection cavity 18, a top plate 19, a ejector rod 20, an ejection driver 21, and a lifting driver 22. DETAILED DESCRIPTION

[0026] like Figure 1-Figure 5As shown, a plastic chair mold with an integral large-angle ejection mechanism includes an upper template 1, a lower template 2 and an intermediate template 3 obliquely arranged between the upper template 1 and the lower template 2, a plastic chair molding cavity 4 is formed between the upper template 1, the intermediate template 3 and the lower template 2, the plastic chair molding cavity 4 includes a backrest molding portion 5 arranged between the upper template 1 and the lower template 2, an armrest molding portion 6 arranged on the lower template 2, a seat molding portion 7 and a front leg molding portion 8 arranged between the intermediate template 3 and the lower template 2, and a rear leg molding portion 9 arranged between the intermediate template 3 and the upper template 1, a detachable side panel mechanism 10 connected to the armrest molding portion 6 is arranged on the intermediate template 3, and an integral ejection mechanism 11 is arranged on the intermediate template 3.

[0027] In the utility model, the plastic chair molding cavity composed of the chair back molding part 5, the armrest molding part 6, the seat molding part 7, the front leg molding part 8 and the rear leg molding part 9 can be integrally injection molded to form a plastic chair product. The detachable side panel mechanism 10 at the armrest molding part can be quickly replaced when damaged, which can improve the efficiency of maintenance and replacement. After the product is injection molded, the plastic chair product can be integrally ejected from the middle template through the integral ejection mechanism 11.

[0028] Specifically, the detachable side panel mechanism 10 includes a side panel 12 that is slidably matched with the middle template 3 through a sliding limit structure, the handrail forming portion 6 is inwardly recessed and formed on the inner wall of the side panel 12, and also includes a detachable side core pull assembly arranged on the middle template 3, and the side core pull assembly is detachably connected to the side panel 12 through a detachable connection structure. The side panels 12 and the side core pull assembly that constitute the detachable side panel mechanism 10 can be quickly disassembled, and secondly, the detachable connection between the side panel and the middle template, and between the side core pull assembly and the middle template can facilitate the overall disassembly and replacement of the detachable side panel mechanism 10 or the independent disassembly and replacement of each component in the detachable side panel mechanism 10.

[0029] Specifically, the side core pulling assembly includes a linear drive 14 fixed on a drive mounting seat 13, the drive mounting seat 13 is detachably fixed to the middle template 3 by a plurality of bolts, the linear drive 14 is horizontally arranged and perpendicular to the side wall of the middle template 3, and the output shaft end of the linear drive 14 is connected to the side insert 12 by a detachable connection structure. The linear drive 14 can drive the side insert to approach or move away from the handrail forming part in the horizontal direction, the drive mounting seat 13 fixing the linear drive 14 is detachably fixed to the middle template 3 by a plurality of bolts, and the linear drive can be easily disassembled and replaced, and the output shaft end of the linear drive 14 is connected to the side insert 12 by a detachable connection structure, and the linear drive 14 and the side insert can be easily disassembled and replaced.

[0030] Those skilled in the art should understand that the linear drive may be an oil cylinder, an air cylinder or a linear motor, etc.

[0031] Specifically, the detachable connection structure includes a connecting groove 15 which is recessed inwardly and is arranged on the outer wall of the side insert 12. The output shaft end of the linear drive 14 is inserted into the connecting groove 15 and slidably cooperates with the connecting groove 15. The cross-sections of the connecting groove 15 and the output shaft end of the linear drive 14 are both T-shaped. The cross-sections of the output shaft end of the linear drive 14 and the connecting groove 15 are both T-shaped, which can realize the push-pull sliding of the linear drive on the side insert. Both ends of the connecting groove 15 pass through the side insert 12, so that the linear drive and the side insert can be disassembled by sliding, which is convenient for maintenance and replacement.

[0032] Specifically, the sliding limit structure includes two L-shaped sliders 16 arranged in parallel, the L-shaped sliders 16 are arranged in parallel with the linear drive 14, and the side panel block 12 is provided with an L-shaped slide groove 17 corresponding to the L-shaped slider 16, and the L-shaped slider 16 is inserted into the L-shaped slide groove 17. The L-shaped slider 16 cooperates with the L-shaped slide groove 17 to limit the side panel block when the side panel block moves; specifically, the outer end of the L-shaped slide groove 17 passes through the side panel block, so that the side panel block and the L-shaped slider can be disassembled by sliding, which is convenient for maintenance and replacement.

[0033] Preferably, the L-shaped slider 16 is detachably fixed to the middle template 3 by a plurality of bolts, so that the L-shaped slider 16 can be easily removed from the middle template.

[0034] Specifically, the integral ejection mechanism 11 includes an ejection cavity 18 disposed in the middle template 3, a top plate 19 is disposed in the ejection cavity 18, a plurality of ejector rods 20 connected to the seat forming part 7 are fixedly connected to the top plate 19, an inclined ejection driver 21 is fixedly connected to the outer end surface of the middle template 3, the ejection driver 21 is arranged parallel to the ejector rod 20, and the output shaft end of the ejection driver 21 is fixedly connected to the top plate 19. The ejection driver 21 can drive the top plate 19 to move toward or away from the seat forming part, and when the top plate moves toward the seat forming part, it can apply a thrust to the seat forming part of the product through the ejector rod, so that the product can be ejected from the middle template.

[0035] Those skilled in the art should understand that the ejection drive may be an oil cylinder, an air cylinder or a linear motor, etc.

[0036] Specifically, vertically arranged lifting drivers 22 are fixedly connected to both sides of the middle template 3, and the output shaft ends of the lifting drivers 22 are fixedly connected to the upper template 1 through the adapter. When the mold is opened, the upper template and the middle template can be moved upward synchronously to separate the upper template and the middle template from the lower template. After the upper template and the middle template are separated from the lower template, the two lifting drivers can drive the upper template to move vertically upward so that the upper template and the middle template can be separated.

[0037] Those skilled in the art should understand that the lifting drive may be an oil cylinder, an air cylinder or a linear motor, etc.

[0038] The working principle of the utility model is as follows: the plastic chair molding cavity composed of the back molding part 5, the armrest molding part 6, the seat molding part 7, the front leg molding part 8 and the rear leg molding part 9 can be integrally injection molded to form a plastic chair product; the detachable side insert mechanism 10 at the armrest molding part can be quickly replaced when damaged, which can improve the efficiency of maintenance and replacement; after the product is injection molded, the plastic chair product can be integrally ejected and demoulded from the middle template through the integral ejection mechanism 11;

[0039] The side inserts 12 and the side core pulling components that constitute the detachable side insert mechanism 10 can be quickly disassembled. Secondly, the side inserts and the middle template, and the side core pulling components and the middle template are also detachably connected, which can facilitate the overall disassembly and replacement of the detachable side insert mechanism 10 or the independent disassembly and replacement of each component in the detachable side insert mechanism 10. The linear drive 14 can drive the side insert to approach or move away from the handrail forming part in the horizontal direction. The drive mounting seat 13 that fixes the linear drive 14 is detachably fixed to the middle template 3 by a plurality of bolts, which can facilitate the disassembly and replacement of the linear drive. The output shaft end of the linear drive 14 is fixed by The detachable connection structure is connected to the side insert 12, which can facilitate the disassembly and replacement between the linear drive 14 and the side insert. The cross-sections of the output shaft end of the linear drive 14 and the connecting slide 15 are both T-shaped, which can realize the push-pull sliding of the linear drive on the side insert. The two ends of the connecting slide 15 pass through the side insert 12, which can make the linear drive and the side insert disassembled by sliding, which is convenient for maintenance and replacement. The L-shaped slider 16 cooperates with the L-shaped slide 17 to limit the side insert when the side insert moves; specifically, the outer end of the L-shaped slide 17 passes through the side insert, so that the side insert and the L-shaped slider can be disassembled by sliding, which is convenient for maintenance and replacement.

[0040] The ejection drive 21 can drive the top plate 19 to move toward or away from the seat molding part. When the top plate moves toward the seat molding part, it can apply a thrust to the seat molding part of the product through the ejector rod, so that the product can be ejected from the middle template. When the mold is opened, the upper template and the middle template can move upward synchronously to separate the upper template and the middle template from the lower template. After the upper template and the middle template are separated from the lower template, the upper template can be driven to move vertically upward by two lifting drives to separate the upper template and the middle template.

[0041] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0042] Although this article uses the upper template 1, lower template 2, middle template 3, plastic chair molding cavity 4, back molding part 5, armrest molding part 6, seat molding part 7, front leg molding part 8, rear leg molding part 9, detachable side panel mechanism 10, integral ejection mechanism 11, side panel 12, drive mounting seat 13, linear drive 14, connecting slide 15, L-shaped slider 16, L-shaped slide 17, ejection cavity 18, top plate 19, ejector rod 20, ejection drive 21, lifting drive 22, etc. more frequently, these terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A plastic chair mold with an integrated large-angle ejection mechanism, comprising an upper mold plate (1), a lower mold plate (2), and an intermediate mold plate (3) obliquely arranged between the upper mold plate (1) and the lower mold plate (2), characterized in that: A plastic chair molding cavity (4) is formed between the upper mold plate (1), the middle mold plate (3) and the lower mold plate (2). The plastic chair molding cavity (4) includes a back molding portion (5) arranged between the upper mold plate (1) and the lower mold plate (2), an armrest molding portion (6) arranged on the lower mold plate (2), a seat molding portion (7) and a front leg molding portion (8) arranged between the middle mold plate (3) and the lower mold plate (2), and a rear leg molding portion (9) arranged between the middle mold plate (3) and the upper mold plate (1). A detachable side panel mechanism (10) connected to the armrest molding portion (6) is arranged on the middle mold plate (3), and an integral ejection mechanism (11) is arranged on the middle mold plate (3).

2. The plastic chair mold with an integrated large-angle ejection mechanism according to claim 1, characterized in that: The detachable side panel block mechanism (10) includes a side panel block (12) that is slidably matched with the middle template (3) through a sliding limit structure, and the handrail forming portion (6) is inwardly recessed and formed on the inner wall of the side panel block (12), and also includes a detachable side core pulling assembly arranged on the middle template (3), and the side core pulling assembly is detachably connected to the side panel block (12) through a detachable connecting structure.

3. The plastic chair mold with an integrated large-angle ejection mechanism according to claim 2, characterized in that: The side core pulling assembly includes a linear drive (14) fixed on a drive mounting seat (13); the drive mounting seat (13) is detachably fixed to the middle template (3) by a plurality of bolts; the linear drive (14) is horizontally arranged and perpendicular to the side wall of the middle template (3); the output shaft end of the linear drive (14) is connected to the side insert (12) by a detachable connecting structure.

4. The plastic chair mold with an integrated large-angle ejection mechanism according to claim 3, characterized in that: The detachable connection structure comprises a connection slide groove (15) which is recessed inwardly and arranged on the outer wall of the side insert (12); the output shaft end of the linear drive (14) is inserted into the connection slide groove (15) and slidably cooperates with the connection slide groove (15).

5. The plastic chair mold with an integrated large-angle ejection mechanism according to claim 4, characterized in that: The cross sections of the connecting slide groove (15) and the output shaft end of the linear drive (14) are both T-shaped.

6. The plastic chair mold with an integrated large-angle ejection mechanism according to claim 5, characterized in that: Both ends of the connecting slide groove (15) penetrate the side insert block (12).

7. The plastic chair mold with an integrated large-angle ejection mechanism according to claim 3, characterized in that: The sliding limit structure comprises two L-shaped sliding blocks (16) arranged in parallel, wherein the L-shaped sliding blocks (16) are arranged in parallel with the linear drive (14), and an L-shaped sliding groove (17) corresponding to the L-shaped sliding blocks (16) is arranged inwardly on the side panel (12), and the L-shaped sliding block (16) is inserted into the L-shaped sliding groove (17).

8. The plastic chair mold with an integrated large-angle ejection mechanism according to claim 7, characterized in that: The L-shaped sliding block (16) is detachably fixed on the middle template (3) by means of a plurality of bolts.

9. The plastic chair mold with an integrated large-angle ejection mechanism according to claim 1, characterized in that: The integral ejection mechanism (11) comprises an ejection cavity (18) arranged in the middle template (3), a top plate (19) being arranged in the ejection cavity (18), a plurality of ejector rods (20) being fixedly connected to the top plate (19) and connected to the seat forming portion (7), an ejection driver (21) being fixedly connected to the outer end surface of the middle template (3), the ejection driver (21) being arranged parallel to the ejector rods (20), and an output shaft end of the ejection driver (21) being fixedly connected to the top plate (19).

10. The plastic chair mold with an integrated large-angle ejection mechanism according to claim 1, characterized in that: The two sides of the middle template (3) are also fixedly connected with vertically arranged lifting drivers (22), and the output shaft end of the lifting driver (22) is fixedly connected to the upper template (1) via an adapter seat.

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