Front mold core-pulling mechanism

Abstract

The utility model 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 a pushing inclined plane, a clamping groove is formed in the pushing 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 utility model relates to a front mould core-pulling mechanism.

BACKGROUND TECHNIQUE

[0002] More and more plastic products appear in daily life, with the rapid development of the plastic industry and the continuous improvement of general and engineering plastics in strength quality and the like. The plastic products are all processed through injection moulds, and when the front mould core-pulling is designed, the shovels cannot be designed, the sliders cannot bear the pressure and will retreat, and the core-pulling inserts also retreat, causing that the products cannot be well injected or the qualified rate of the products is low during injection.

[0003] The utility model discloses to solve the technical problem that the core-pulling insert retreats during injection, causing that the qualified rate of the products is low.

SUMMARY OF THE INVENTION

[0004] The utility model discloses to overcome the insufficient of prior art, provide a simple structure, low in cost, manufacturing time long and short, core-pulling insert does not retreat during injection, can effectively improve the front mould core-pulling mechanism of product qualified rate.

[0005] The utility model discloses to overcome the insufficient of prior art, provide a simple structure, low in cost, manufacturing time long and short, core-pulling insert does not retreat during injection, can effectively improve the front mould core-pulling mechanism of product qualified rate.

[0006] A front mould core-pulling mechanism, characterized in that it comprises a base, the base is provided with a sliding seat capable of sliding horizontally on the base, one end of the sliding seat is connected with a driving device, the sliding seat is provided with a pushing and ejecting inclined surface, the pushing and ejecting inclined surface is provided with a clamping groove, the sliding seat is provided with a limiting seat, the limiting seat is movably connected with a core-pulling insert, the core-pulling insert is provided with a clamping block matched with the clamping groove at the bottom, 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.

[0007] The front mould core-pulling mechanism as described above is characterized in that the first limiting structure comprises limiting grooves arranged on both sides of the sliding seat, and limiting steps arranged on both sides of the lower end of the core-pulling insert and capable of being clamped into the limiting grooves.

[0008] The front mould core-pulling mechanism as described above is characterized in that the second limiting structure comprises transverse grooves arranged on both sides of the base, and transverse convex strips arranged on both sides of the sliding seat and matched with the transverse grooves.

[0009] The front mould core-pulling mechanism as described above is characterized in that the base is provided with an avoiding groove, the front end of the driving device is connected with a connecting rod, the front end of the connecting rod is connected with a transmission block, the rear end of the sliding seat is provided with vertical grooves on both sides, and the transmission block is clamped into the pair of vertical grooves on both sides.

[0010] A front mold core-pulling mechanism as described above, characterized in that the sliding seat is in the shape of ∪, comprising a left wall, a right wall and a bottom wall, the limiting grooves are arranged on the inner sides of the left wall and the right wall, and the transverse convex strips are arranged on the outer sides of the left wall and the right wall.

[0011] A front mold core-pulling mechanism as described above, characterized in that the clamping groove is in the shape of a wave, and the clamping block is also in the shape of a wave.

[0012] The present utility model has the advantages of:

[0013] During injection molding, the force of the driving device is added to the cooperation of the clamping groove of the sliding seat and the clamping block of the core-pulling insert, so that the injection pressure is borne and dispersed, the core-pulling insert cannot be reversed, the product qualification rate can be effectively improved, the structure is simple, the cost is low, and the manufacturing time is long. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a perspective view of the present utility model;

[0015] Figure 2 is another perspective view of the present utility model from another direction;

[0016] Figure 3 is an exploded view of the structure of the present utility model;

[0017] Figure 4 is a structural view of the core-pulling insert of the present utility model;

[0018] Figure 5 is a structural view of the sliding seat of the present utility model. DETAILED DESCRIPTION

[0019] The present utility model will be further described below in combination with the drawings:

[0020] A front mold core-pulling mechanism comprises a base 1, the base 1 is provided with a sliding seat 2 that can slide horizontally on the base, one end of the sliding seat 2 is connected with a driving device 3, the sliding seat 2 is provided with a pushing and lifting inclined surface 21, the front side of the pushing and lifting inclined surface 21 is lower and the high side is higher, the pushing and lifting inclined surface 21 is provided with a clamping groove 22, the sliding seat 2 is provided with a limiting seat 4, the limiting seat 4 is movably inserted with a core-pulling insert 5, the core-pulling insert 5 is provided with a clamping block 51 that cooperates with the clamping groove 22, a first limiting structure 6 is arranged between the lower end of the core-pulling insert 5 and the sliding seat 2, and a second limiting structure 7 is arranged between the sliding seat 2 and the base 1. During injection molding, the force of the driving device 3 is added to the cooperation of the clamping groove 22 of the sliding seat 2 and the clamping block 51 of the core-pulling insert 5, so that the injection pressure is borne and dispersed, the core-pulling insert 5 cannot be reversed, the product qualification rate can be effectively improved, the structure is simple, the cost is low, and the manufacturing time is long. After the injection molding is completed and the mold is opened, the driving device 3 pulls the sliding seat 2 to retreat, the core-pulling insert 5 moves downward to realize the core-pulling action.

[0021] The driving device 3 is an oil cylinder or a steam cylinder.

[0022] The first limiting structure 6 comprises a limiting groove 61 arranged on both sides of the sliding seat 2, and a limiting step 62 arranged on both sides of the lower end of the core pulling insert 5 and clamped into the limiting groove 61.

[0023] The second limiting structure 7 comprises a horizontal groove 71 arranged on both sides of the base 1 and a horizontal protrusion 72 arranged on both sides of the sliding seat 2 and matched with the horizontal groove 71.

[0024] The base 1 comprises a rear support 11 for fixing the driving device 3, and a pair of supports 12 arranged on the front side of the rear support 11, and the horizontal groove 71 is arranged on the inner side of the pair of supports 12.

[0025] The front end of the rear support 11 is provided with an avoiding groove 13, the front end of the driving device 3 is connected with a connecting rod 31, the front end of the connecting rod 31 is connected with 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 avoiding groove 13, the rear end of the sliding seat 2 is provided with a pair of vertical grooves 23 on both sides, and the two sides of the transmission block 32 are clamped into the pair of vertical grooves 23.

[0026] The sliding seat 2 is in the shape of ∪, which 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 horizontal protrusion 72 is arranged on the outer side of the left wall 201 and the right wall 202.

[0027] The limiting seat 4 is provided with a limiting seat hole 41 through which the core pulling insert 5 passes, the limiting seat hole 41 is an inclined hole, and the inclined direction of the limiting seat hole 41 is opposite to the inclined direction of the pushing top inclined surface 21 of the sliding seat 2.

[0028] The clamping groove is in the shape of wave, and the clamping block is also in the shape of wave.

Claims

1. A front mold core-pulling mechanism, characterized in that... It includes a base (1), a sliding seat (2) that can slide horizontally on the base (1), a drive device (3) connected to one end of the sliding seat (2), a push-up slope (21) on the sliding seat (21), a slot (22) on the push-up slope (21), a limiting seat (4) on the sliding seat (2), a core-pulling insert (5) movably inserted on the limiting seat (4), a locking block (51) that cooperates with the slot (22) at the bottom of the core-pulling insert (5), a first limiting structure (6) between the lower end of the core-pulling insert (5) and the sliding seat (2), and a second limiting structure (7) between the sliding seat (2) and the base (1).

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

3. The front mold core-pulling mechanism according to claim 1, characterized in that... The second limiting structure (7) includes transverse grooves (71) on both sides of the base (1) and transverse protrusions (72) that cooperate with the transverse grooves (71) 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 a clearance groove (13), the front end of the drive 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 the rear ends of the sliding seat (2) are provided with vertical grooves (23) on both sides, and the two sides of the transmission block (32) are inserted into the pair of vertical grooves (23).

5. A front mold core-pulling mechanism according to claim 1, characterized in that... The sliding seat (2) is U-shaped and includes a left wall (201), a right wall (202) and a bottom wall (203). The limiting groove (61) is located on the inner side of the left wall (201) and the right wall (202), and the transverse protrusion (72) is located 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 slot is wavy, and the card block is also wavy.

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