CN114523630A - Automatic externally-cutting separating mechanism for sprue of plastic pipe fitting mold - Google Patents

Abstract

The automatic externally-cutting separating mechanism for the sprue of the plastic pipe fitting die comprises a fixed die compound plate and a movable die compound plate, wherein a fixed die frame and a fixed die insert are arranged below the fixed die compound plate, a die pin, the movable die frame and a movable die insert are arranged on the movable die compound plate, a V-shaped core subassembly and an interface core are arranged between the movable die insert and the fixed die insert, a die cavity is formed between the V-shaped core subassembly and the interface core as well as the movable die insert and the fixed die insert, a sprue bush is arranged on the fixed die compound plate, a runner is connected below the sprue bush and obliquely penetrates through the fixed die frame and the fixed die insert, a lateral runner groove is arranged between the runner and the die cavity, a plastic pipe fitting is injected in the die cavity, a sprue material handle is left in the runner groove, a cutter fixing seat is arranged on the movable die frame corresponding to the sprue material handle, a cutter is arranged on the corresponding fixed die frame, a cutter is slidably arranged on the cutter fixing seat, the cutter is driven by the power to cut the cutter to perform cutting action on the material handle, and a starting device is arranged on the outer wall of one side of an upper sprue and a lower top plate, the starting device controls the power work of the cutter.

Description

Automatic externally-cutting separating mechanism for sprue of plastic pipe fitting mold

Technical Field

The invention relates to an automatic externally-tangent separation mechanism for a plastic pipe fitting mold sprue, and belongs to the field of plastic molds.

Background

The plastic product, such as plastic pipe fittings, is produced by adopting a plastic mould, the types of the plastic pipe fittings are various, wherein one type of the plastic pipe fitting is a V-shaped pipe fitting, according to the analysis of the appearance and the characteristics of the product, the upper end of the pipe fitting is provided with two flaring ports, the lower end of the pipe fitting is provided with an interface, and meanwhile, the surface of the pipe fitting is required to be smooth, so that the traditional mould adopts a horizontal side-pouring structure during the design. After the pipe fitting shaping drawing of patterns, still need the manual work to shear the runner material handle from the pipe fitting body, it is time-consuming to take labor, and it is big to shear runner material handle intensity of labour, and is slow, can also cut the pipe fitting body sometimes, causes the pipe fitting to scrap, influences the production efficiency of whole pipe fitting.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides the automatic sprue circumscribed separating mechanism of the plastic pipe mould, which can automatically control the cutter to work when the mould is opened, separate the sprue material handle from the pipe fitting body, has high shearing precision and good quality and improves the production efficiency.

The invention discloses a technical scheme of an automatic externally-cutting separation mechanism for a plastic pipe fitting mold sprue, which comprises the following steps: including mould cover half compound plate and movable mould compound plate, install the cover half under the cover half compound plate and insert, install the cover half in the cover half frame, set up the moulding foot on the movable mould compound plate, be equipped with roof and roof down between the moulding foot, install the movable mould frame on the moulding foot, install the movable mould in the movable mould frame and insert, set up the core between movable mould insert and the cover half insert, the core includes V core subassembly and interface core, and V core subassembly and interface core insert and movable mould insert and constitute the die cavity between the cover half inserts, set up the runner cover on the cover half compound plate, connect the runner under the runner cover, the runner is put to run through cover half frame and cover half insert its characterized in that to one side: the side runner groove is arranged between the runner and the die cavity, the die cavity is filled with plastic pipes, a runner material handle is reserved in the runner groove, a cutter fixing seat is arranged on a movable die frame corresponding to the runner material handle, a clearance groove is arranged on a corresponding fixed die frame, a cutter is arranged on the cutter fixing seat in a sliding mode, the cutter is driven by cutter power to shear the runner material handle, a starting device is arranged on the outer wall of one side of an upper top plate and a lower top plate and comprises a pneumatic switch and a switch pressing plate, the switch pressing plate is arranged on the outer wall of one side of the upper top plate and the outer wall of one side of the lower top plate, the pneumatic switch is arranged on the outer wall of one side of a corresponding die pin, the switch pressing plate presses a contact rod of the pneumatic switch, an outer joint and an inner joint are arranged on the pneumatic switch, the outer joint is connected with an air source, and the inner joint is connected with a cutter cylinder.

According to the automatic externally-tangent separation mechanism for the plastic pipe fitting mold sprue, the lateral runner groove is formed between the runner and the mold cavity, the sprue material handle is reserved in the runner groove and interferes with other parts in the mold during demolding, and a conventional demolding mode (the pipe fitting and the sprue handle are ejected together) is difficult to adopt, so that the sprue material handle needs to be sheared before ejection after mold opening, and therefore, in the mold opening process, a push rod of an injection molding machine drives an upper top plate and a lower top plate to eject upwards together, so that a switch pressing plate is separated from contact with a contact rod of a pneumatic switch, an inner joint is conducted, a cutter cylinder works, and a cutter is driven to cut the sprue material handle from the pipe fitting. The starting device has simple structure, can realize the automatic cutting of the cutter cylinder without the control of a computer (control system), and saves the cost. The fixed die frame is provided with the clearance groove, so that the shearing action is not blocked, the action is finished at one step, the tangent plane is smooth, the quality is good, and the production efficiency is high.

According to the automatic externally-cutting separation mechanism for the plastic pipe fitting mold sprue, the dovetail sliding groove is formed in the inner side wall of the cutter fixing seat, the cutter sliding block with the dovetail sliding block is arranged on the dovetail sliding groove, the cutter is fixed on the cutter sliding block, the cutter power is the cutter cylinder, the cutter cylinder is fixed on the cutter fixing seat, and the cylinder rod is connected with the cutter sliding block. During operation, cut the material handle runner by the cutter on the cutter cylinder drive cutter sliding block, slide by the cooperation of forked tail spout and forked tail slider, the action is in the same direction as smooth, cuts accurately, and the incision is smooth. The upper top plate and the lower top plate are connected with a material handle ejector rod, the material handle ejector rod is in contact with the movable die frame and the movable die insert and the sprue material handle, after die opening is carried out, the sheared sprue material handle is ejected out of the die by the material handle ejector rod, and automatic stripping is realized.

Drawings

FIG. 1 is a schematic view of the plastic pipe mold of the present invention;

FIG. 2 is a schematic structural view of an automatic gate external cutting and separating mechanism of the present invention;

FIG. 3 is a perspective view of the automatic gate circumscribing and separating mechanism of the plastic pipe mold of the present invention;

FIG. 4 is a schematic view of the cutter assembly of the present invention;

FIG. 5 is a schematic view showing the assembly relationship of the cutter with the runner groove and the clearance groove according to the present invention.

Detailed Description

The invention relates to an automatic external cutting and separating mechanism for a plastic pipe fitting mold sprue, which comprises a mold fixed mold compound plate 1 and a movable mold compound plate 2, wherein a fixed mold frame 3 is arranged below the fixed mold compound plate, a fixed mold insert 4 is arranged in the fixed mold frame, mold feet 5 are arranged on the movable mold compound plate, an upper top plate 16 and a lower top plate 17 are arranged between the mold feet, a movable mold frame 6 is arranged on the mold feet, a movable mold insert 7 is arranged in the movable mold frame, a core is arranged between the movable mold insert 7 and the fixed mold insert 4 and comprises a V-shaped core subassembly 8 and an interface core 9, a mold cavity is formed between the V-shaped core 8 and the interface core 9 and between the movable mold insert 7 and the fixed mold insert 4, a sprue bush 10 is arranged on the fixed mold compound plate, a sprue bush lower connecting runner 11 is arranged on the sprue bush, the runner obliquely penetrates through the fixed mold frame 3 and the fixed mold insert 4, a lateral runner groove 15 is arranged between the runner 11 and the mold cavity, a plastic pipe fitting 12 is injected in the mold cavity, a sprue material handle 13 is reserved in the runner groove 15, a cutter fixing seat 20 is arranged on a movable mold frame 6 corresponding to the sprue material handle 13, a clearance groove 31 is arranged on a corresponding fixed mold frame 3, a cutter 21 is arranged on the cutter fixing seat 20 in a sliding mode and is driven by cutter power to shear the sprue material handle 13, a starting device 01 is arranged on the outer wall of one side of an upper top plate 16 and a lower top plate 17, the starting device 01 comprises a pneumatic switch 26 and a switch pressing plate 27, the switch pressing plate 27 is arranged on the outer wall of one side of the upper top plate 16 and the lower top plate 17, the pneumatic switch 26 is arranged on the outer wall of one side of a corresponding mold pin 5, the switch pressing plate 27 presses a contact rod of the pneumatic switch, an outer joint 28 and an inner joint 29 are arranged on the pneumatic switch 26, the outer joint is connected with an air source, and the inner joint is connected with a cutter cylinder 25. Because the lateral runner groove 15 is arranged between the runner 11 and the die cavity, the runner material handle 13 is left in the runner groove 15, the runner material handle interferes with other parts in the die during demoulding, and the conventional demoulding mode (the pipe and the material handle are ejected together) is difficult to adopt, so that the runner material handle 13 needs to be sheared before ejection after mould opening, therefore, in the mould opening process, the upper top plate and the lower top plate are ejected upwards under the action of a push rod of an injection moulding machine, so that the switch press plate 27 is separated from contact with a contact rod of the pneumatic switch 26, the inner joint 29 is switched on, the cutter cylinder 25 works, and the cutter 21 is driven to cut the runner material handle 13 from the pipe 12. The starting device has simple structure, can realize the automatic cutting of the cutter cylinder without the control of a computer (control system), and saves the cost. The fixed die frame is provided with the clearance groove, so that the shearing action is not blocked, the action is finished at one step, the tangent plane is smooth, the quality is good, and the production efficiency is high. The starting device 01 is started to drive the cutter to work, the cutter 21 is driven to cut off the sprue material handle 13 and the pipe fitting 12, and due to the fact that the empty avoiding groove 31 is formed in the fixed die frame 3, the shearing action is not blocked, the action is finished at one step, the tangent plane is smooth, the quality is good, and the production efficiency is improved. The utility model discloses a cutter, including cutter fixing base 20, cutter slider 24, cutter cylinder 25, cutter fixing base 20, the last dovetail slide 22 that sets up of cutter fixing base 20 inside wall, the last cutter sliding block 24 that sets up of dovetail slide 23 of taking of dovetail slide, cutter 21 fixes on cutter sliding block 24, cutter power is cutter cylinder 25, and the cutter cylinder is fixed on cutter fixing base 20 to connect cutter sliding block 24 by the cylinder pole. During operation, cut the material handle runner by the cutter on the cutter cylinder drive cutter sliding block, slide by the cooperation of forked tail spout and forked tail slider, the action is in the same direction as smooth, cuts accurately, and the incision is smooth. The upper top plate 16 and the lower top plate 17 are connected with a material handle ejector rod 30, the material handle ejector rod 30 is in contact with the movable die frame and the movable die insert and the sprue material handle 13, after die opening is carried out, the sheared sprue material handle is ejected out of a rear die by the material handle ejector rod, and automatic material stripping is realized.

Claims (3)

1. An automatic external cutting and separating mechanism for a plastic pipe fitting mold sprue comprises a mold fixed mold compound plate (1) and a movable mold compound plate (2), a fixed mold frame (3) is arranged below the fixed mold compound plate, a fixed mold insert (4) is arranged in the fixed mold frame, mold feet (5) are arranged on the movable mold compound plate, an upper top plate (16) and a lower top plate (17) are arranged between the mold feet, a movable mold frame (6) is arranged on the mold feet, a movable mold insert (7) is arranged in the movable mold frame, a core is arranged between the movable mold insert (7) and the fixed mold insert (4), the core comprises a V-shaped core subassembly (8) and an interface core (9), a mold cavity is formed between the V-shaped core subassembly (8) and the interface core (9) and the movable mold insert (7) and the fixed mold insert (4), a sprue bush (10) is arranged on the fixed mold compound plate, a runner (11) is connected below the sprue bush, and obliquely penetrates through the fixed mold frame (3) and the fixed mold insert (4), the method is characterized in that: a lateral runner groove (15) is arranged between the runner (11) and the die cavity, a pipe fitting (12) is injected in the die cavity, a sprue material handle (13) is reserved in the runner groove (15), a cutter fixing seat (20) is arranged on a movable die frame (6) corresponding to the sprue material handle (13), a clearance groove (31) is arranged on a corresponding fixed die frame (3), a cutter (21) is arranged on the cutter fixing seat (20) in a sliding manner and driven by cutter power to shear the sprue material handle (13), a starting device (01) is arranged on the outer wall of one side of an upper top plate (16) and a lower top plate (17), the starting device (01) comprises a pneumatic switch (26) and a switch pressing plate (27), the switch pressing plate (27) is arranged on the outer wall of one side of the upper top plate (16) and the outer wall of one side of the lower top plate (17), the pneumatic switch (26) is arranged on the outer wall of one side of the corresponding die pin (5), and the contact rod of the switch pressing plate (27) presses the switch, the pneumatic switch (26) is provided with an outer joint (28) and an inner joint (29), the outer joint is connected with an air source, and the inner joint is connected with the cutter cylinder (25).

2. The automatic external cutting and separating mechanism for the plastic pipe fitting mold gate as claimed in claim 1, wherein a dovetail sliding groove (22) is formed in the inner side wall of the cutter fixing seat (20), a cutter sliding block (24) with a dovetail sliding block (23) is arranged on the dovetail sliding groove, the cutter (21) is fixed on the cutter sliding block (24), the cutter power is a cutter cylinder (25), the cutter cylinder is fixed on the cutter fixing seat (20), and the cutter sliding block (24) is connected by a cylinder rod.

3. The automatic gate external cutting and separating mechanism for the plastic pipe fittings die as claimed in claim 1, wherein the upper top plate (16) and the lower top plate (17) are connected with the material handle mandril (30), and the material handle mandril (30) is contacted with the movable die frame and the movable die insert and the gate material handle (13).

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