Front mold core-pulling mechanism

Abstract

The invention discloses a front mold core-pulling mechanism which comprises a base, a sliding seat capable of sliding on the base in the horizontal direction is arranged on the base, one end of the sliding seat is connected with a driving device, the sliding seat is provided with an ejection inclined plane, a clamping groove is formed in the ejection inclined plane, a limiting seat is arranged on the sliding seat, and a core-pulling insert is movably inserted into the limiting seat. A clamping block matched with the clamping groove is arranged at the bottom of the core-pulling insert, a first limiting structure is arranged between the lower end of the core-pulling insert and the sliding seat, and a second limiting structure is arranged between the sliding seat and the base. During injection molding, the force of the driving device is matched with the clamping groove of the sliding seat and the clamping block of the core-pulling insert, so that the injection molding pressure is borne and dispersed, the core-pulling insert cannot retreat, the product percent of pass can be effectively improved, the structure is simple, the cost is low, and the manufacturing time is long.

Description

[Technical field]

[0001] The invention relates to a front mould core pulling mechanism. [Background technology]

[0002] There are more and more plastic products in our daily life. With the rapid development of the plastic industry and the continuous improvement of the strength and quality of general and engineering plastics, plastic products are all processed by injection molds. When designing the core pulling of the front mold, the shovel cannot be designed. The slider cannot withstand the pressure and will retreat. The core pulling insert will also retreat, resulting in the inability to inject good products or low product qualification rate.

[0003] The invention aims to solve the technical problem that the core-pulling insert will retreat during injection molding, resulting in a low qualified rate of products. [Summary of the invention]

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a front mold core pulling mechanism which has a simple structure, low cost, short manufacturing time, and can effectively improve the product qualification rate without the core pulling insert retreating during injection molding.

[0005] The object of the present invention is achieved in that:

[0006] A front mold core pulling mechanism, characterized in that it includes a base, a sliding seat which can slide horizontally on the base is provided on the base, a driving device is connected to one end of the sliding seat, the sliding seat is provided with a push-up inclined surface, a card slot is provided on the push-up inclined surface, a limit seat is provided on the sliding seat, a core pulling insert is movably inserted on the limit seat, a card block cooperating with the card slot is provided at the bottom of the core pulling insert, a first limit structure is provided between the lower end of the core pulling insert and the sliding seat, and a second limit structure is provided between the sliding seat and the base.

[0007] The front mold core pulling mechanism as described above is characterized in that the first limiting structure includes limiting grooves on both sides of the sliding seat, and limiting steps that are inserted into the limiting grooves are provided on both sides of the lower end of the core pulling insert.

[0008] The front mold core pulling mechanism as described above is characterized in that the second limiting structure includes transverse grooves on both sides of the base, and transverse convex strips matching the transverse grooves are provided on both sides of the sliding seat.

[0009] A front mold core pulling mechanism as described above is characterized in that the base is provided with an avoidance groove, the front end of the driving device is connected to a connecting rod, the front end of the connecting rod is connected to a transmission block, vertical grooves are provided on both sides of the rear end of the sliding seat, and the two sides of the transmission block are inserted into the pair of vertical grooves.

[0010] A front mold core pulling mechanism as described above is characterized in that the sliding seat is ∪-shaped, which includes a left wall, a right wall and a bottom wall, the limiting groove is arranged on the inner side of the left wall and the right wall, and the transverse convex strip is arranged on the outer side of the left wall and the right wall.

[0011] The front mold core pulling mechanism as described above is characterized in that the clamping groove is wavy and the clamping block is also wavy.

[0012] The beneficial effects of the present invention are:

[0013] During injection molding, the force of the driving device plus the groove of the sliding seat cooperates with the block of the core-pulling insert to withstand and disperse the injection pressure, so that the core-pulling insert will not retreat, which can effectively improve the product qualification rate, has a simple structure, low cost and short manufacturing time.

Brief Description of the Drawings

[0014] Figure 1 is a stereogram of the present invention;

[0015] Figure 2 It is a three-dimensional diagram of another direction of the present invention;

[0016] Figure 3 It is an exploded view of the structure of the present invention;

[0017] Figure 4 It is a structural diagram of the core-pulling insert of the present invention;

[0018] Figure 5 It is a structural diagram of a sliding seat of the present invention. [Specific implementation method]

[0019] The present invention will be further described below in conjunction with the accompanying drawings:

[0020] A front mold core pulling mechanism includes a base 1, a sliding seat 2 that can slide horizontally on the base is provided on the base 1, a driving device 3 is connected to one end of the sliding seat 2, the sliding seat 2 is provided with a push-up inclined surface 21, the front side of the push-up inclined surface 21 is low and the side side is high, a clamping groove 22 is provided on the push-up inclined surface 21, a limiting seat 4 is provided on the sliding seat 2, a core pulling insert 5 is movably inserted on the limiting seat 4, a clamping block 51 that cooperates with the clamping groove 22 is provided at the bottom of the core pulling insert 5, a first limiting structure 6 is provided between the lower end of the core pulling insert 5 and the sliding seat 2, and a second limiting structure 7 is provided between the sliding seat 2 and the base 1. During injection molding, the force of the driving device 3 plus the clamping groove 22 of the sliding seat 2 cooperates with the clamping block 51 of the core pulling insert 5 to bear and disperse the injection molding pressure, so that the core pulling insert 5 will not retreat, which can effectively improve the product qualification rate, simple structure, low cost, and short manufacturing time. After the injection molding is completed and the mold is opened, the driving device 3 pulls the sliding seat 2 backward, and the core-pulling insert 5 moves downward to realize the core-pulling action.

[0021] The driving device 3 of the present invention is an oil cylinder or a gas cylinder.

[0022] The first limiting structure 6 of the present invention includes limiting grooves 61 provided on both sides of the sliding seat 2, and limiting steps 62 inserted into the limiting grooves 61 provided on both sides of the lower end of the core-pulling insert 5. The limiting steps 62 and the core-pulling insert 5 are an integral structure.

[0023] The second position limiting structure 7 of the present invention includes transverse grooves 71 provided on both sides of the base 1, and transverse convex strips 72 matched with the transverse grooves 71 provided on both sides of the sliding seat 2. The transverse convex strips 72 and the sliding seat 2 are an integral structure.

[0024] The base 1 of the present invention comprises a rear bracket 11 for fixing the driving device 3 . A pair of supports 12 are provided on the front side of the rear bracket 11 , and the transverse groove 71 is provided on the inner side of the pair of supports 12 .

[0025] The front end of the rear bracket 11 of the present invention is provided with an avoidance groove 13, the front end of the driving device 3 is connected to a connecting rod 31, and the front end of the connecting rod 31 is connected to a transmission block 32. When the driving device 3 drives the connecting rod and the transmission block 32 to retreat backward, the transmission block 32 can retreat into the avoidance groove 13, and vertical grooves 23 are provided on both sides of the rear end of the sliding seat 2, and the two sides of the transmission block 32 are inserted into the pair of vertical grooves 23.

[0026] The sliding seat 2 of the present invention is ∪-shaped, and includes a left wall 201 , a right wall 202 and a bottom wall 203 . The limiting groove 61 is arranged on the inner side of the left wall 201 and the right wall 202 , and the transverse ridge 72 is arranged on the outer side of the left wall 201 and the right wall 202 .

[0027] The limiting seat 4 of the present invention is provided with a limiting seat hole 41 for the core-pulling insert 5 to pass through. The limiting seat hole 41 is an inclined hole, and its inclined direction is opposite to the inclined direction of the push-up inclined surface 21 of the sliding seat 2.

[0028] The card slot of the present invention is wavy in shape, and the card block is also wavy in shape.

Claims

1. A front mold core pulling mechanism, characterized in that The invention comprises a base (1), wherein a sliding seat (2) capable of sliding in a horizontal direction on the base is provided on the base (1), one end of the sliding seat (2) is connected to a driving device (3), the sliding seat (2) is provided with a push-up inclined surface (21), a clamping groove (22) is provided on the push-up inclined surface (21), a limiting seat (4) is provided on the sliding seat (2), a core-pulling insert (5) is movably inserted on the limiting seat (4), a clamping block (51) cooperating with the clamping groove (22) is provided at the bottom of the core-pulling insert (5), a first limiting structure (6) is provided between the lower end of the core-pulling insert (5) and the sliding seat (2), and a second limiting structure (7) is provided between the sliding seat (2) and the base (1).

2. A front mold core pulling mechanism according to claim 1, characterized in that The first limiting structure (6) comprises limiting grooves (61) provided on both sides of the sliding seat (3), and limiting steps (62) which are inserted into the limiting grooves (61) are provided on both sides of the lower end of the core-pulling insert (5).

3. A front mold core pulling mechanism according to claim 1, characterized in that The second limiting structure (7) comprises transverse grooves (71) provided on both sides of the base (1), and transverse convex strips (72) cooperating with the transverse grooves (71) provided on both sides of the sliding seat (2).

4. A front mold core pulling mechanism according to claim 1, characterized in that The base (1) is provided with an avoidance groove (13), the front end of the driving device (3) is connected to a connecting rod (31), the front end of the connecting rod (31) is connected to a transmission block (32), and vertical grooves (23) are provided on both sides of the rear end of the sliding seat (2), and the two sides of the transmission block (32) are inserted into the pair of vertical grooves (23).

5. The front mold core pulling mechanism according to claim 1, characterized in that The sliding seat (2) is ∪-shaped and comprises a left wall (201), a right wall (202) and a bottom wall (203); the limiting groove (61) is arranged on the inner side of the left wall (201) and the right wall (202); and the transverse convex strip (72) is arranged on the outer side of the left wall (201) and the right wall (202).

6. A front mold core pulling mechanism according to claim 1, characterized in that The card slot is wavy in shape, and the card block is also wavy in shape.

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