Self-locking type oil cylinder anti-retreating mechanism of plastic chair injection mold

Abstract

The utility model provides a self-locking type oil cylinder anti-retreating mechanism of a plastic chair injection mold, and belongs to the technical field of molds. The mold comprises an upper mold plate, a middle mold plate, a lower mold plate and a forming cavity formed among the upper mold plate, the middle mold plate and the lower mold plate, an oil cylinder lifting mechanism capable of driving the upper mold plate to ascend and descend in the vertical direction is arranged on the middle mold plate, and two side inserts are symmetrically arranged between the upper mold plate and the lower mold plate. The side insert is fixed on the lower die plate, and an oil cylinder anti-retreating assembly is arranged between the side insert and the upper die plate. The oil cylinder lifting mechanism can drive the upper mold plate to ascend and descend in the vertical direction to achieve mold closing and mold opening of the upper mold plate and the lower mold plate, and when injection molding is conducted through mold closing, the oil cylinder anti-retreating assembly can lock the upper mold plate so as to prevent an oil cylinder in the oil cylinder lifting mechanism from retreating.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mould technical field relates to a kind of self-locking type oil cylinder anti-retreating mechanism of plastic chair injection mould. BACKGROUND

[0002] Plastic chair injection mould is driven by oil cylinder to open mould and close mould, mould is closed in the state, when injection moulding, it is generally assisted by the oil pressure of oil cylinder to ensure the closing of upper mould and lower mould, but in the injection moulding process, because the pressure in cavity is too large when forming cavity injection moulding, oil cylinder is prone to retreat, thereby causing gap between upper mould and lower mould.

[0003] For example, a kind of interchangeable multi-purpose injection mould for processing plastic chair is disclosed in Chinese patent [application number: 201310162873.8], including fixed die plate and movable die plate, fixed die plate is fixed with fixed die, movable die plate is fixed with movable die and guide pillar, fixed block is fixed on the both sides of movable die, forming cavity is arranged on movable die, there is injection moulded plastic chair between forming cavity and fixed die, lifting oil cylinder is fixed on the both sides of forming cavity, lifting oil cylinder piston rod is connected with fixed block, ejection plate is arranged in front of forming cavity, ejection rod is fixed on one side of ejection plate, ejection bracket is fixed on the other side of ejection plate, ejection oil cylinder is fixed on ejection bracket, ejection oil cylinder piston rod is connected with forming cavity, ejection rod is driven by ejection oil cylinder, the head of ejection rod is in contact with injection moulded plastic chair, characterized in that chair back insert block is fixed on the back of movable die, blocking block is arranged on the both sides of movable die at armrest position, blocking block is driven by blocking oil cylinder piston rod, and blocking block is matched with glue inlet at movable die armrest. UTILITY MODEL CONTENTS

[0004] The utility model aims at the above problem, provide a kind of self-locking type oil cylinder anti-retreating mechanism of plastic chair injection mould.

[0005] To achieve the above object, the utility model adopts the following technical scheme:

[0006] A kind of self-locking type oil cylinder anti-retreating mechanism of plastic chair injection mould, including upper mould plate, intermediate die plate, lower mould plate and the forming cavity being arranged between upper mould plate, intermediate die plate and lower mould plate, the intermediate die plate is provided with the oil cylinder lifting mechanism that can drive upper mould plate to lift along vertical direction, the upper mould plate and lower mould plate are symmetrically provided with two side inserts between, the side insert is fixed on lower mould plate, and the oil cylinder anti-retreating assembly is arranged between side insert and upper mould plate.

[0007] In the self-locking oil cylinder anti-retreating mechanism of the plastic chair injection mold, the oil cylinder anti-retreating assembly comprises a fixed seat fixed on the outer side of the side insert block and a self-locking sliding block, the upper section of the self-locking sliding block can be inserted into the sliding block mounting groove on the side of the upper mold plate, the lower section of the self-locking sliding block is obliquely arranged and inserted into the fixed seat, the fixed seat is fixedly connected with an anti-retreating position oil cylinder, and the anti-retreating position oil cylinder is obliquely arranged and connected with the upper section of the self-locking sliding block.

[0008] In the self-locking oil cylinder anti-retreating mechanism of the plastic chair injection mold, the upper section of the self-locking sliding block is fixedly connected with a first connecting seat, the first connecting seat is obliquely provided with a first connecting sliding groove which is vertically arranged with the anti-retreating position oil cylinder, the cross section of the first connecting sliding groove is T-shaped, and the output shaft end of the anti-retreating position oil cylinder is fixedly connected with a first T-shaped connector which is in sliding connection with the first connecting sliding groove.

[0009] In the self-locking oil cylinder anti-retreating mechanism of the plastic chair injection mold, the cross section of the lower section of the self-locking sliding block is T-shaped.

[0010] In the self-locking oil cylinder anti-retreating mechanism of the plastic chair injection mold, the oil cylinder lifting mechanism comprises lifting oil cylinders vertically fixed on the two sides of the middle mold plate, and the output shaft end of the lifting oil cylinder is connected with the upper mold plate through a detachable connecting structure.

[0011] In the self-locking oil cylinder anti-retreating mechanism of the plastic chair injection mold, the detachable connecting structure comprises a second connecting seat fixed on the upper mold plate, the second connecting seat is horizontally provided with a second connecting sliding groove, the cross section of the second connecting sliding groove is T-shaped, and the output shaft end of the lifting oil cylinder is fixedly connected with a second T-shaped connector which is in sliding connection with the second connecting sliding groove.

[0012] In the self-locking oil cylinder anti-retreating mechanism of the plastic chair injection mold, the middle mold plate is provided with an ejection cavity, the ejection cavity is provided with an ejection plate driven by an ejection oil cylinder, and the ejection plate is provided with a plurality of ejector rods connected with the forming cavity.

[0013] In the self-locking oil cylinder anti-retreating mechanism of the plastic chair injection mold, the first connecting seat is detachably connected with the upper section of the self-locking sliding block through a plurality of bolts.

[0014] In the self-locking oil cylinder anti-retreating mechanism of the plastic chair injection mold, the anti-retreating position oil cylinder is detachably fixed on the fixed seat through a plurality of bolts.

[0015] In the self-locking oil cylinder anti-retreating mechanism of the plastic chair injection mold, the lifting oil cylinder is detachably fixed on the middle mold plate through a plurality of bolts.

[0016] Compared with the prior art, the self-locking oil cylinder anti-retreating mechanism of the plastic chair injection mold has the following advantages:

[0017] 1、Oil cylinder lifting mechanism can drive the mold plate along the vertical direction to realize the mold and open mold, in the mold, the oil cylinder anti-retreat assembly can be locked to prevent the oil cylinder lifting mechanism in the oil cylinder retreat position.

[0018] 2、In the mold, the anti-retreat oil cylinder can drive the self-locking slider to move upward to enable the self-locking slider to be inserted into the slider mounting groove, and the self-locking slider cooperates with the fixed seat to lock the mold plate to prevent the oil cylinder lifting mechanism in the oil cylinder retreat position.

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

[0020] Figure 1 is the external structure diagram of the present application;

[0021] Figure 2 is the structure diagram of the upper mold plate;

[0022] Figure 3 is the structure diagram of the lower mold plate;

[0023] Figure 4 is the sectional view of the present application.

[0024] In the figure, the upper mold plate 1, the middle mold plate 2, the lower mold plate 3, the forming cavity 4, the oil cylinder lifting mechanism 5, the side insert block 6, the oil cylinder anti-retreat assembly 7, the fixed seat 8, the self-locking slider 9, the anti-retreat oil cylinder 10, the first connecting seat 11, the first connecting sliding groove 12, the first T-shaped joint 13, the lifting oil cylinder 14, the second connecting seat 15, the second connecting sliding groove 16, the second T-shaped joint 17, the ejection cavity 18, the ejection oil cylinder 19, the ejection plate 20, the ejector rod 21. DETAILED DESCRIPTION

[0025] As Figures 1-4 shown, a self-locking type oil cylinder anti-retreat mechanism of a plastic chair injection mold, comprising an upper mold plate 1, a middle mold plate 2, a lower mold plate 3 and a forming cavity 4 arranged between the upper mold plate 1, the middle mold plate 2 and the lower mold plate 3, the middle mold plate 2 is provided with an oil cylinder lifting mechanism 5 capable of driving the upper mold plate 1 to move vertically, the upper mold plate 1 and the lower mold plate 3 are symmetrically provided with two side insert blocks 6, the side insert blocks 6 are fixed on the lower mold plate 3, and the side insert blocks 6 and the upper mold plate 1 are provided with an oil cylinder anti-retreat assembly 7.

[0026] The oil cylinder lifting mechanism 5 can drive the upper mold plate to ascend and descend along the vertical direction to realize the closing and opening of the upper mold plate and the lower mold plate, and the oil cylinder anti-retreating assembly 7 can automatically lock the upper mold plate to prevent the oil cylinder in the oil cylinder lifting mechanism 5 from retreating when the closing is performed.

[0027] Specifically, the oil cylinder anti-retreating assembly 7 comprises a fixed seat 8 fixed to the outer side of the side insert block 6 and a self-locking sliding block 9, the upper section of the self-locking sliding block 9 can be inserted into the sliding block mounting groove in the side of the upper mold plate 1, the lower section of the self-locking sliding block 9 is obliquely arranged and inserted into the fixed seat 8, the fixed seat 8 is fixedly connected with the anti-retreating oil cylinder 10, the anti-retreating oil cylinder 10 is obliquely arranged and connected with the upper section of the self-locking sliding block 9.

[0028] Specifically, the upper section of the self-locking sliding block 9 is fixedly connected with a first connecting seat 11, the first connecting seat 11 is obliquely provided with a first connecting sliding groove 12 which is vertically arranged with the anti-retreating oil cylinder 10, the cross section of the first connecting sliding groove 12 is T-shaped, the output shaft end of the anti-retreating oil cylinder 10 is fixedly connected with a first T-shaped connector 13 which is slidingly connected with the first connecting sliding groove 12, and the cross section of the lower section of the self-locking sliding block 9 is T-shaped.

[0029] Specifically, the oil cylinder lifting mechanism 5 comprises lifting oil cylinders 14 which are vertically fixed on both sides of the middle mold plate 2, the output shaft end of the lifting oil cylinder 14 is connected with the upper mold plate 1 through a detachable connecting structure, the detachable connecting structure comprises a second connecting seat 15 fixed on the upper mold plate 1, the second connecting seat 15 is horizontally provided with a second connecting sliding groove 16, the cross section of the second connecting sliding groove 16 is T-shaped, and the output shaft end of the lifting oil cylinder 14 is fixedly connected with a second T-shaped connector 17 which is slidingly connected with the second connecting sliding groove 16.

[0030] Specifically, the middle mold plate 2 is provided with an ejection cavity 18, the ejection cavity 18 is provided with an ejection plate 20 driven by an ejection oil cylinder 19, and the ejection plate 20 is provided with a plurality of ejection rods 21 connected with the forming cavity 4.

[0031] Specifically, the first connecting seat 11 is detachably connected with the upper segment of the self-locking slider 9 through a plurality of bolts, the anti-back oil cylinder 10 is detachably fixed on the fixed seat 8 through a plurality of bolts, and the lifting oil cylinder 14 is detachably fixed on the middle mold plate 2 through a plurality of bolts.

[0032] The working principle of the utility model is: the oil cylinder lifting mechanism 5 can drive the upper mold plate to ascend and descend along the vertical direction to realize the closing and opening of the upper mold plate and the lower mold plate, when closing to inject, the oil cylinder anti-back assembly 7 can automatically lock the upper mold plate to prevent the oil cylinder in the oil cylinder lifting mechanism 5 from back-off;

[0033] After closing, the anti-back oil cylinder 10 can drive the self-locking slider 9 to move obliquely upwards so that the upper segment of the self-locking slider 9 is inserted into the slider installation groove, the self-locking slider cooperates with the fixed seat to lock the upper mold plate to prevent the oil cylinder in the oil cylinder lifting mechanism 5 from back-off, the anti-back oil cylinder can drive the self-locking slider to reciprocate along the inclined direction through the first connecting seat 11, and the first T-shaped joint 13 can slide in the first connecting sliding groove 12 to keep the connection between the anti-back oil cylinder and the self-locking slider during the movement of the self-locking slider;

[0034] The synchronous action of the two lifting oil cylinders can drive the upper mold plate to ascend and descend along the vertical direction, the lifting oil cylinder is connected with the second connecting seat 15 through the second T-shaped joint 17 and the second connecting sliding groove 16, so that the lifting oil cylinder can be conveniently disassembled, and after the product is injection molded, the ejection oil cylinder drives the ejection plate to move to eject the product through the ejector rod.

[0035] The specific embodiments described in the present document are merely illustrative of the spirit of the utility model. Those skilled in the art to which the utility model belongs can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the utility model or exceed the range defined by the appended claims.

[0036] Although the upper mold plate 1, the middle mold plate 2, the lower mold plate 3, the forming cavity 4, the oil cylinder lifting mechanism 5, the side insert 6, the oil cylinder anti-back assembly 7, the fixed seat 8, the self-locking slider 9, the anti-back oil cylinder 10, the first connecting seat 11, the first connecting sliding groove 12, the first T-shaped joint 13, the lifting oil cylinder 14, the second connecting seat 15, the second connecting sliding groove 16, the second T-shaped joint 17, the ejection cavity 18, the ejection oil cylinder 19, the ejection plate 20 and the ejector rod 21 are used more frequently in the present document, the use of these terms is merely for the convenience of describing and explaining the essence of the utility model; it is contrary to the spirit of the utility model to interpret them as any kind of additional limitation.

Claims

1. A self-locking hydraulic cylinder anti-retraction mechanism for a plastic chair injection mold, comprising an upper template (1), a middle template (2), a lower template (3), and a molding cavity (4) disposed between the upper template (1), the middle template (2), and the lower template (3), characterized in that, The intermediate template (2) is provided with a hydraulic cylinder lifting mechanism (5) that can drive the upper template (1) to rise and fall in the vertical direction. Two side inserts (6) are symmetrically arranged between the upper template (1) and the lower template (3). The side inserts (6) are fixed on the lower template (3). A hydraulic cylinder anti-reverse assembly (7) is provided between the side inserts (6) and the upper template (1).

2. The self-locking hydraulic cylinder anti-reverse mechanism for plastic chair injection molds according to claim 1, characterized in that, The hydraulic cylinder anti-reverse assembly (7) includes a fixed seat (8) fixed on the outside of the side insert (6) and a self-locking slider (9). The upper section of the self-locking slider (9) can be inserted into the slider mounting groove on the side of the upper template (1). The lower section of the self-locking slider (9) is inclined and inserted into the fixed seat (8). An anti-reverse hydraulic cylinder (10) is fixedly connected to the fixed seat (8). The anti-reverse hydraulic cylinder (10) is inclined and connected to the upper section of the self-locking slider (9).

3. The self-locking hydraulic cylinder anti-reverse mechanism for plastic chair injection molds according to claim 2, characterized in that, The upper section of the self-locking slider (9) is fixedly connected to a No. 1 connecting seat (11). The No. 1 connecting seat (11) is inclinedly provided with a No. 1 connecting groove (12) that is perpendicular to the anti-retraction cylinder (10). The cross section of the No. 1 connecting groove (12) is T-shaped. The output shaft end of the anti-retraction cylinder (10) is fixedly connected to a No. 1 T-shaped connector (13) that is slidably connected to the No. 1 connecting groove (12).

4. The self-locking hydraulic cylinder anti-retraction mechanism for plastic chair injection molds according to claim 2, characterized in that, The cross-section of the lower section of the self-locking slider (9) is T-shaped.

5. The self-locking hydraulic cylinder anti-retraction mechanism for plastic chair injection molds according to claim 3, characterized in that, The hydraulic cylinder lifting mechanism (5) includes lifting cylinders (14) that are vertically fixed on both sides of the middle template (2). The output shaft end of the lifting cylinder (14) is connected to the upper template (1) through a detachable connection structure.

6. The self-locking hydraulic cylinder anti-reverse mechanism for plastic chair injection molds according to claim 5, characterized in that, The detachable connection structure includes a second connecting seat (15) fixed on the upper template (1), a second connecting groove (16) is horizontally provided on the second connecting seat (15), the cross section of the second connecting groove (16) is T-shaped, and the output shaft end of the lifting cylinder (14) is fixedly connected to a second T-shaped connector (17) that slides with the second connecting groove (16).

7. The self-locking hydraulic cylinder anti-reverse mechanism for plastic chair injection molds according to claim 1, characterized in that, The intermediate template (2) is provided with an ejection cavity (18), and the ejection cavity (18) is provided with an ejection plate (20) driven by an ejection cylinder (19). The ejection plate (20) is provided with several ejector rods (21) connected to the forming cavity (4).

8. The self-locking hydraulic cylinder anti-reverse mechanism for plastic chair injection molds according to claim 3, characterized in that, The first connecting seat (11) is detachably connected to the upper section of the self-locking slider (9) by several bolts.

9. The self-locking hydraulic cylinder anti-reverse mechanism for plastic chair injection molds according to claim 3, characterized in that, The anti-retraction cylinder (10) is detachably fixed to the fixed base (8) by several bolts.

10. The self-locking hydraulic cylinder anti-retraction mechanism for plastic chair injection molds according to claim 5, characterized in that, The lifting cylinder (14) is detachably fixed to the intermediate template (2) by several bolts.

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