CN216466005U - Secondary demoulding mechanism for plastic mould - Google Patents

Abstract

The utility model discloses a secondary demolding mechanism of a plastic mold, which comprises a primary demolding assembly and a secondary demolding assembly: the primary demoulding assembly comprises a first sliding block and a second sliding block, wherein an insert pin is arranged on the second sliding block, and the insert pin penetrates through the third sliding block and extends into the rubber piece; the secondary demolding assembly comprises an unlocking block, a floating positioning block and a limiting screw, the unlocking block can push the floating positioning block to leave the third sliding block, and the limiting screw can pull the third sliding block to strip the rubber part. The utility model can realize that the insert pin firstly withdraws from the rubber piece under the condition that the rubber piece is kept still; the unlocking block, the floating positioning block matched with the unlocking block and the limiting screw matched with the step hole in the second sliding block are matched, so that the third sliding block can be pulled to move in a delayed manner, and secondary demolding is realized; through applying secondary demoulding structure, can avoid or reduce to glue and take place to warp under the condition that the piece loses the support simultaneously in a plurality of directions, improve the fashioned yields of mould.

Description

Secondary demoulding mechanism for plastic mould

Technical Field

The utility model relates to the technical field of plastic molds, in particular to a secondary demolding mechanism for a plastic mold.

Background

The demoulding mechanism is an important component of the plastic mould, and the structure of the demoulding mechanism directly influences the dimensional accuracy and the appearance quality of a product. Most of conventional demolding mechanisms are used for one-time demolding, but if the transverse dimension and the longitudinal dimension of a product are different greatly, for example, a plastic part with a large-diameter disc product and a long hole column in the center is formed, the disc surface is easily deformed or damaged by pulling, the hole column is easily elongated by the conventional demolding mode, the molding quality of the plastic part is unstable, and the production yield is influenced.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems in the prior art, the utility model provides the mould release device which can withdraw the insert pin from the rubber piece firstly and pull the slide block to move in a delayed manner, so that secondary demoulding is realized, deformation of the rubber piece under the condition of losing support in multiple directions can be avoided or reduced, and the yield of mould forming is improved.

In order to solve the technical problems, the utility model adopts a technical scheme as follows:

a secondary demoulding mechanism of a mould, the moulded rubber part is arranged on the fixed mould of the mould; the demolding mechanism includes:

the driving device is arranged beside the fixed die in the X direction;

the primary demoulding assembly comprises a first sliding block which can slide relative to the fixed die, and the first sliding block is in transmission connection with the driving device through a transmission part; a second sliding block matched with the first sliding block is arranged at the X-direction side of the first sliding block, the second sliding block is detachably and fixedly connected with the first sliding block, and more than one insert pin extending along the X-direction is arranged on the second sliding block; a third sliding block is arranged on the X-direction side of the second sliding block, the third sliding block is movably connected with the first sliding block through more than one limiting screw, and the rubber piece is abutted against the side wall of the third sliding block; each insert pin sequentially penetrates through the second sliding block and the third sliding block and extends into the rubber piece; the driving device can drive the first sliding block to slide on the fixed die along the X direction so as to synchronously drive the second sliding block and the insert pins to synchronously move and enable the insert pins to be separated from the rubber piece;

the secondary demolding assembly comprises an unlocking block which is detachably and fixedly connected with the first sliding block and extends along the X direction; the lower end of the unlocking block is provided with a floating positioning block, the side wall of the upper part of the floating positioning block abuts against the third sliding block, the lower end part of the floating positioning block is connected with more than one elastic piece extending along the Z direction, and each elastic piece is arranged on the fixed die; the unlocking block can move along the X direction under the driving of the first sliding block so as to force the floating positioning block to extrude the elastic piece and move along the Z direction, so that the upper part of the floating positioning block leaves the third sliding block, and the third sliding block moves along the X direction under the driving of the limiting screw so as to be separated from the rubber piece.

As a further elaboration of the above technical solution:

in the above technical solution, the side wall of the first slide block is provided with more than one limiting hole and a plurality of first positioning holes, and each limiting hole is matched with one limiting screw; a second through hole is arranged at the bottom end part of the first sliding block right below the limiting hole, and the second through hole and the limiting hole are vertically intersected in the first sliding block; the bottom end portion of the first sliding block is provided with a first avoidance groove capable of avoiding the unlocking block.

In the above technical solution, the second slider is provided with more than one third through hole, a plurality of fourth through holes and more than one fifth through hole: each third through hole is matched with one limiting hole and one limiting screw, each fourth through hole is matched with one first positioning hole, and a positioning piece can sequentially penetrate through the fourth through hole and the first positioning hole so as to fix the second sliding block on the first sliding block; each fifth through hole can be matched with one insert pin; the bottom end of the second sliding block is provided with a second avoiding groove capable of avoiding the unlocking block.

In the above technical solution, each third through hole is a stepped hole; the aperture of the limiting hole is larger than or equal to the maximum aperture of the third through hole.

In the above technical scheme, each of the limit screws is a stepped screw, the top end portion of the stepped screw is matched with one of the limit holes, and the tail end portion of the stepped screw is in threaded connection with one of the third sliding blocks.

In the above technical solution, the unlocking block is provided with a sixth through hole adapted to the second through hole, and a positioning member can sequentially pass through the sixth through hole and the second through hole to fix the unlocking block on the first slider; the lower end of the unlocking block is provided with a clamping groove, and the length of the clamping groove is greater than or equal to the width of the floating positioning block.

In the above technical solution, the lower end of the unlocking block is further provided with a support plate, and the support plate is detachably and fixedly connected with the first sliding block; and a fourth avoidance groove capable of avoiding the floating positioning block is arranged on the supporting plate.

In the above technical solution, the third slider is provided with more than one seventh positioning hole and a plurality of eighth through holes: each seventh positioning hole is matched with one limiting screw; each eighth through hole is matched with one insert pin; a molding cavity for molding a rubber piece is arranged on the periphery of each eighth through hole on the side wall of the third sliding block; and a third avoiding groove capable of avoiding the unlocking block is formed at the bottom end part of the third sliding block.

In the above technical solution, the driving device is a cylinder or an oil hydraulic cylinder.

Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, the first sliding block and the second sliding block which can move synchronously are arranged, the insert pin is arranged on the second sliding block, and the rubber piece is molded on the outer side of the third sliding block, so that the insert pin can be firstly withdrawn from the rubber piece under the condition that the rubber piece is kept immovable; the unlocking block capable of synchronously moving with the first sliding block, the floating positioning block matched with the unlocking block and the limiting screw matched with the step hole in the second sliding block are arranged, so that the third sliding block can be pulled to move in a delayed manner, and secondary demolding is realized; through applying secondary demoulding structure, can avoid or reduce to glue and take place to warp under the condition that the piece loses the support simultaneously in a plurality of directions, improve the fashioned yields of mould.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of an exploded structure of the present invention;

FIG. 3 is a schematic structural diagram of a first slider in this embodiment;

FIG. 4 is a schematic structural diagram of a second slider in the present embodiment;

FIG. 5 is a schematic structural view of a limit screw in the present embodiment;

FIG. 6 is a schematic structural diagram of an unlocking block in the present embodiment;

fig. 7 is a schematic structural diagram of a third slider in the present embodiment.

In the figure: 100. a rubber part; 200. fixing a mold; 210. fixing a template; 220. fixing a mold core; 10. a drive device; 11. demoulding seats; 20. a first slider; 21. a limiting hole; 22. a first positioning hole; 23. a second through hole; 24. a first avoidance slot; 30. a second slider; 31. a third through hole; 32. a fourth via hole; 33. a fifth through hole; 34. a second avoidance slot; 40. inserting a needle; 50. a third slider; 51. a seventh positioning hole; 52. an eighth through hole; 53. forming a cavity; 54. a third avoidance slot; 60. a limit screw; 70. unlocking the block; 71. a sixth through hole; 72. a card slot; 80. a floating positioning block; 90. an elastic member; 1. and a support plate.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiments described by referring to the drawings are exemplary and intended to be used for explaining the present application and are not to be construed as limiting the present application. In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and encompass, for example, both fixed and removable connections or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate. In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

As shown in fig. 1-2, a secondary mold release mechanism for a mold, a molded plastic part 100 is arranged on a fixed mold 200 of the mold; the demolding mechanism includes:

a driving device 10 installed at an X-direction side of the fixed mold 200;

the primary demoulding assembly comprises a first sliding block 20 which can slide relative to the fixed mould 200, and the first sliding block 20 is in transmission connection with the driving device 10 through a transmission part; a second sliding block 30 matched with the first sliding block 20 is arranged at the X-direction side of the first sliding block 20, the second sliding block 30 is detachably and fixedly connected with the first sliding block 20, and more than one insert pin 40 extending along the X-direction is arranged on the second sliding block 30; a third sliding block 50 is arranged at the X-direction side of the second sliding block 30, the third sliding block 50 is movably connected with the first sliding block 10 through more than one limiting screw 60, and the rubber part 100 is abutted against the side wall of the third sliding block 50; each insert pin 40 sequentially passes through the second slider 30 and the third slider 50 and extends into the adhesive piece 100; the driving device 10 can drive the first slide block 20 to slide on the fixed die 200 along the X direction, so as to synchronously drive the second slide block 30 and the plurality of insert pins 40 to synchronously move, and the plurality of insert pins 40 are separated from the rubber piece 100;

the secondary demolding assembly comprises an unlocking block 70 which is detachably and fixedly connected with the first sliding block 20 and extends along the X direction; the lower end of the unlocking block 70 is provided with a floating positioning block 80, the upper side wall of the floating positioning block 80 is abutted against the third slider 50, the lower end part of the floating positioning block is connected with more than one elastic piece 90 extending along the Z direction, and each elastic piece 90 is arranged on the fixed die 200; the unlocking block 70 can move in the X direction under the driving of the first slider 20 to force the floating positioning block 80 to press the elastic member 90 and move in the Z direction, so that the upper portion of the floating positioning block is separated from the third slider 50, and the third slider 50 moves in the X direction under the driving of the limiting screw 60 to separate from the rubber member 100.

In this embodiment, the driving device 10 is installed on the demolding seat 11, the fixed mold 200 includes a fixed mold plate 210 and a fixed mold core 220, and the demolding seat 11 is detachably fixed on the X-direction side of the fixed mold core 220.

According to the utility model, the first sliding block 20 and the second sliding block 30 which can move synchronously are arranged, the insert pin 40 is arranged on the second sliding block 30, and the rubber piece 100 is molded on the outer side of the third sliding block 50, so that the insert pin 40 can be firstly withdrawn from the rubber piece 100 under the condition that the rubber piece 100 is kept still; the unlocking block 70 capable of synchronously moving with the first slider 20 and the floating positioning block 80 matched with the unlocking block 70 are arranged, and the limiting screw 60 matched with the step hole in the second slider 30 is matched, so that the third slider 50 can be pulled to move in a delayed manner, and secondary demolding is realized; through the secondary demoulding structure, the deformation of the rubber part 100 in multiple directions under the condition of losing support can be avoided or reduced, and the yield of the mould forming is improved.

Specifically, as shown in fig. 3, the side wall of the first sliding block 20 is provided with more than one limiting hole 21 and a plurality of first positioning holes 22, and each limiting hole 21 is matched with a limiting screw 60; a second through hole 23 is arranged right below a limiting hole 21 at the bottom end part of the first sliding block 20, and the second through hole 23 and the limiting hole 21 are vertically intersected in the first sliding block 20; the bottom end portion of the first slider 20 is provided with a first escape groove 24 that can escape the unlocking block 70.

Specifically, as shown in fig. 4, the second slider 30 is provided with more than one third through hole 31, a plurality of fourth through holes 32, and more than one fifth through hole 33: each third through hole 31 is matched with a limiting hole 21 and a limiting screw 60, each fourth through hole 32 is matched with a first positioning hole 22, and a positioning piece can sequentially penetrate through a fourth through hole 32 and a first positioning hole 22 so as to fix the second sliding block 30 on the first sliding block 20; each fifth through hole 33 can be matched with an insert pin 40; the bottom end portion of the second slider 30 is provided with a second escape groove 34 that can escape the unlocking block 70.

Specifically, each third through hole 31 is a stepped hole groove, and the aperture of the limiting hole 21 is greater than or equal to the maximum aperture of the third through hole 31.

Specifically, as shown in fig. 5, each of the limit screws 60 is a stepped screw, the tip end portion of which is matched with one of the limit holes 21, and the tip end portion of which is screwed with the third slider 50.

During operation, the stop screw 60 has a time-delay effect: when the first slide block 20 starts to move, the limit screw 60 keeps moving; when the third through hole 31 on the second slider 30 abuts against the step on the limit screw 60, the second slider 30 pushes the limit screw 60 to move, so as to drive the third slider 50 to slide, and secondary demolding is realized.

Specifically, as shown in fig. 6, a sixth through hole 71 adapted to the second through hole 23 is provided on the unlocking block 70, and a positioning member can sequentially pass through the sixth through hole 71 and the second through hole 23 to fix the unlocking block 70 on the first slider 20; the lower end of the unlocking block 70 is provided with a clamping groove 72, and the length of the clamping groove 72 is larger than or equal to the width of the floating positioning block 80.

Specifically, the lower end part of the unlocking block 70 is further provided with a support plate 1, and the support plate 1 is detachably and fixedly connected with the first sliding block 20; the supporting plate 1 is provided with a fourth avoiding groove which can avoid the floating positioning block 80.

Specifically, as shown in fig. 7, the third slider 50 is provided with at least one seventh positioning hole 51 and a plurality of eighth through holes 52: each seventh positioning hole 51 is matched with a limit screw 60; each eighth through hole 52 is adapted to an insert pin 40; a molding cavity 53 for molding the rubber part 100 is arranged on the side wall of the third slider 50 at the periphery of each eighth through hole 52; the bottom end portion of the third slider 50 is provided with a third escape groove 54 that can escape the unlocking block 70.

In the above technical solution, the driving device 10 is a cylinder or a hydraulic cylinder.

The working process of the utility model is as follows:

during the drawing of patterns, drive arrangement 10 drive first slider 20 is to removing along X, drives the subassembly and carries out two times of drawing of patterns in proper order:

primary demolding: the first slide block 20 drives the second slide block 30 to synchronously move, the second slide block 30 drives the insert pin 40 to synchronously move, and the insert pin 40 retreats from the rubber piece 100 to complete one-time demoulding; at this time, the lower side wall of the third slider 50 is abutted by the floating positioning block 80, the end of the limit screw 60 locking the third slider 50 slides in the limit hole 21, and the third slider 50 is in an unstressed state and remains immovable;

secondary demolding: the first slider 20 synchronously unlocks the block 70 and the support plate 1 to synchronously move along the X direction, the floating positioning block 80 clamped in the clamping groove 72 and the fourth avoidance groove is pressed down to move along the Z direction, and the upper end part of the floating positioning block leaves the third slider 50 so as to be freely movable; when the step of the third through hole 31 abuts against the limit screw 60, the second slider 30 pushes the limit screw 60 to move along the X direction, and the limit screw 60 pulls the third slider 50 to move, so that secondary demolding is realized.

The technical scope of the present invention is not limited to the above embodiments, and any modifications, equivalent variations and modifications made to the above embodiments according to the technical spirit of the present invention still fall within the technical scope of the present invention.

Claims (9)

1. The utility model provides a secondary demoulding mechanism of moulding which characterized in that: the molded rubber part is arranged on a fixed die of the mold; the demolding mechanism includes:

the driving device is arranged beside the fixed die in the X direction;

the primary demoulding assembly comprises a first sliding block which can slide relative to the fixed die, and the first sliding block is in transmission connection with the driving device through a transmission part; a second sliding block matched with the first sliding block is arranged at the X-direction side of the first sliding block, the second sliding block is detachably and fixedly connected with the first sliding block, and more than one insert pin extending along the X-direction is arranged on the second sliding block; a third sliding block is arranged on the X-direction side of the second sliding block, the third sliding block is movably connected with the first sliding block through more than one limiting screw, and the rubber piece is abutted against the side wall of the third sliding block; each insert pin sequentially penetrates through the second sliding block and the third sliding block and extends into the rubber piece; the driving device can drive the first sliding block to slide on the fixed die along the X direction so as to synchronously drive the second sliding block and the insert pins to synchronously move and enable the insert pins to be separated from the rubber piece;

the secondary demolding assembly comprises an unlocking block which is detachably and fixedly connected with the first sliding block and extends along the X direction; the lower end of the unlocking block is provided with a floating positioning block, the side wall of the upper part of the floating positioning block abuts against the third sliding block, the lower end part of the floating positioning block is connected with more than one elastic piece extending along the Z direction, and each elastic piece is arranged on the fixed die; the unlocking block can move along the X direction under the driving of the first sliding block so as to force the floating positioning block to extrude the elastic piece and move along the Z direction, so that the upper part of the floating positioning block leaves the third sliding block, and the third sliding block moves along the X direction under the driving of the limiting screw so as to be separated from the rubber piece.

2. The secondary demolding mechanism for the plastic mold as claimed in claim 1, wherein the side wall of the first sliding block is provided with more than one limiting hole and a plurality of first positioning holes, and each limiting hole is matched with one limiting screw; a second through hole is arranged at the bottom end part of the first sliding block right below the limiting hole, and the second through hole and the limiting hole are vertically intersected in the first sliding block; the bottom end portion of the first sliding block is provided with a first avoidance groove capable of avoiding the unlocking block.

3. The secondary demolding mechanism for the mold as claimed in claim 2, wherein the second slide block is provided with one or more third through holes, a plurality of fourth through holes and one or more fifth through holes: each third through hole is matched with one limiting hole and one limiting screw, each fourth through hole is matched with one first positioning hole, and a positioning piece can sequentially penetrate through the fourth through hole and the first positioning hole so as to fix the second sliding block on the first sliding block; each fifth through hole can be matched with one insert pin; the bottom end of the second sliding block is provided with a second avoiding groove capable of avoiding the unlocking block.

4. A secondary mould release mechanism for a mould as claimed in claim 3, wherein each third through-hole is a stepped hole; the aperture of the limiting hole is larger than or equal to the maximum aperture of the third through hole.

5. The secondary demolding mechanism for the plastic mold as claimed in claim 4, wherein each of the stop screws is a stepped screw, the tip end portion of the stepped screw is matched with one of the stop holes, and the tip end portion of the stepped screw is screwed with one of the third sliders.

6. The secondary demolding mechanism for the plastic mold as claimed in claim 2, wherein a sixth through hole matched with the second through hole is formed in the unlocking block, and a positioning member can sequentially pass through the sixth through hole and the second through hole to fix the unlocking block on the first sliding block; the lower end of the unlocking block is provided with a clamping groove, and the length of the clamping groove is greater than or equal to the width of the floating positioning block.

7. The secondary demolding mechanism for the mold as claimed in claim 6, wherein the lower end part of the unlocking block is further provided with a support plate, and the support plate is detachably and fixedly connected with the first slide block; and a fourth avoidance groove capable of avoiding the floating positioning block is arranged on the supporting plate.

8. The secondary demolding mechanism for the plastic mold as claimed in claim 1, wherein the third slide block is provided with more than one seventh positioning hole and a plurality of eighth through holes: each seventh positioning hole is matched with one limiting screw; each eighth through hole is matched with one insert pin; a molding cavity for molding a rubber piece is arranged on the periphery of each eighth through hole on the side wall of the third sliding block; and a third avoiding groove capable of avoiding the unlocking block is formed at the bottom end part of the third sliding block.

9. A secondary release mechanism for a mould as claimed in any one of claims 1 to 8, wherein the drive means is a pneumatic or hydraulic cylinder.

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