CN210651726U

CN210651726U - Injection molding and stamping die

Info

Publication number: CN210651726U
Application number: CN201920867875.XU
Authority: CN
Inventors: 何菊明
Original assignee: Tianjin Hanba Electromechanical Equipment Co Ltd
Current assignee: Tianjin Hanba Electromechanical Equipment Co Ltd
Priority date: 2019-06-11
Filing date: 2019-06-11
Publication date: 2020-06-02
Anticipated expiration: 2029-06-11

Abstract

The utility model discloses an injection stamping die, including position circle, runner cover, cover half bedplate, fixed die plate, die, terrace die, movable mould board, bearing plate, cushion, movable mould bedplate, push pedal, thimble fixed plate, thimble release link, reset spring, drawing material pole, set up two subchannels and two die cavities of bilateral symmetry on the die, communicate through the side runner between subchannel outer end and the die cavity, the side runner both sides respectively are equipped with an automatic glue trimming device, and the automatic glue trimming device is installed in the accepting groove on the terrace die, automatic glue trimming device includes cutting off cutter, clamp plate, slider, guide arm, holds power spring, rotating turret and stay cord. The utility model discloses can carry out automatic cutout to the offside runner when dividing the mould, reduce workman's work load, improve work efficiency.

Description

Injection molding and stamping die

Technical Field

The utility model relates to the technical field of mold, especially, relate to an injection stamping die.

Background

The injection mold consists of a movable mold and a fixed mold, wherein the movable mold is arranged on a movable template of the injection molding machine, and the fixed mold is arranged on a fixed template of the injection molding machine. And when the mold is opened, the movable mold is separated from the fixed mold so as to take out the plastic product. The side gate, also called edge gate, and rectangular gate are the most used gate types, so they are also called common gates, and their cross-sectional shapes are generally processed into rectangles, so they are also called rectangular gates. Compared with a side gate, the side gate has a simple cross section and is convenient to process, the size of the gate can be finely processed, the surface roughness value is small, the structure of a mold can be simplified, the waste of a pouring system is reduced, the position of the gate can be flexibly selected according to the shape characteristics and mold filling requirements of a plastic part, such as a frame-shaped or annular plastic part, the gate can be arranged on the outer side and the inner side, therefore, the side gate is very wide in application, is particularly suitable for a two-plate type multi-cavity mold and is mainly used for casting and molding small and medium-sized plastic parts, the gate can be automatically broken after the mold is opened, the automatic operation is facilitated, the side gate is manually broken by using a shearing clamp, the labor is very laborious, the labor cost is high, and hands can be sore after workers work for a long time, and the production efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses solve the problem that above-mentioned prior art exists, provide an injection molding stamping die, can carry out automatic cutout to the offside runner when dividing the mould, reduce workman's work load, improve work efficiency.

The utility model provides a technical scheme that its technical problem adopted: an injection stamping die comprises a positioning ring, a sprue bush, a fixed die base plate, a fixed die plate, a female die, a male die, a movable die plate, a bearing plate, a cushion block, a movable die base plate, a push plate, an ejector pin fixing plate, an ejector pin reset rod, a reset spring and a material pulling rod, wherein the positioning ring is arranged at the middle position on the fixed die base plate, the sprue bush is arranged in the positioning ring, the fixed die plate is fixed below the fixed die base plate, a fixed die frame is arranged at the lower side of the fixed die plate, the female die is embedded in the fixed die frame, the lower end of the sprue bush extends to the lower surface of the female die, two bilaterally symmetrical branch runners and two cavities are arranged on the female die, the inner ends of the branch runners are communicated with a main runner in the sprue bush, the outer ends of the branch runners are communicated with the cavities through side gates, the movable die frame is, the core is matched with the cavity, a bearing plate is fixed below the movable mould plate, a cushion block is respectively arranged at the left side and the right side below the bearing plate, a push plate is arranged between the two cushion blocks, a thimble fixing plate is fixedly connected above the push plate, a plurality of thimbles, four thimble reset rods and a material pulling rod are fixed on the thimble fixing plate, the four thimble reset rods are positioned at the four corners of the thimble fixing plate, reset springs are arranged on the thimble reset rods, the upper ends of the thimble reset rods extend to the parting surface of the mould, the material pulling rod is positioned at the central position of the thimble fixing plate, the upper ends of the material pulling rods extend into a cold material cavity on the upper surface of the male mould, the cold material cavity is positioned below the main runner, the upper ends of the thimbles extend to the upper surface of the male mould, the thimbles are distributed below the core and the branch runner, a movable mould base plate is fixedly connected, the automatic glue shearing device is arranged in an accommodating groove in a male die and comprises a cutting knife, a pressing plate, a sliding block, a guide rod, a force storage spring, a rotating frame and a pull rope, wherein one end of the cutting knife is provided with a shearing edge, the other end of the cutting knife is fixed with the pressing plate, the pressing plate is positioned in the accommodating groove, a cutter reset spring is arranged between the pressing plate and the inner wall of the accommodating groove, the cutting knife is placed in a blade movable groove, the two ends of the blade movable groove are respectively connected with the accommodating groove and a side gate, the bottom of the accommodating groove is provided with the guide rod, the force storage spring and the sliding block used for knocking the pressing plate are arranged on the guide rod, the rotating frame is arranged at the top of the accommodating groove and comprises two rotating rods and one pull rod, the lower ends of the two rotating rods are respectively hinged to the inner walls on the two sides.

In order to further improve, the blade movable groove comprises last movable groove and lower movable groove, it sets up on the die to go up the movable groove, and the shearing edge is located the movable groove, goes up movable groove inner and side runner lateral wall intercommunication, goes up the movable groove outer end and is located the accepting groove top, the movable groove sets up on the terrace die down, lower movable groove inner not with side runner intercommunication, lower movable groove outer end intercommunication accepting groove, blade movable groove one end not all with side runner intercommunication, the volume of blade movable groove is filled to the reduction that can maximize like this, reduces shearing resistance, lower movable groove is as the spout of cut-off knife, makes the cut-off knife can the straight line direction motion cut off to the side runner.

Further perfection, the lower movable groove is in a step shape, the lower side of the cutting-off knife is correspondingly made into the step shape, the rigidity of the cutting-off knife is improved, and the cutting-off knife is not easy to break.

The linkage rod is arranged between the upper ends of the two rotating rods, the roller is fixed on the linkage rod and can assist the rotating rods to deflect, the upper ends of the rotating rods are in contact with the surface of the female die, friction force is reduced, and abrasion of the surface of the female die is avoided.

Further perfect, the guide rod left end is equipped with the guide rod seat, is equipped with two counter bores on the guide rod seat, is equipped with countersunk screw in the counter bore, and countersunk screw is connected with the screw of accepting the tank bottom surface, the pole hole of accepting the inslot wall is pegged graft to the guide rod right-hand member, and the pole hole is located blade activity groove below, and the guide rod seat has made things convenient for the dismouting of guide rod to change with setting up of pole hole.

Further perfection, the stay cord has two at least, is connected through the tether ring between stay cord and the slider, stay cord and the pull rod. The rope tying ring facilitates connection and replacement of the pull rope, limits the position of the pull rope and avoids slippage of the pull rope.

Further perfect, be provided with the notch around the accepting groove on the both sides inner wall, the notch is embedded to have protruding stopper that is used for blocking the clamp plate, and the distance when the cutting off cutter resets can be ensured to the stopper, and the distance is too big when avoiding the cutting off cutter to reset and causes the too much blade activity groove that fills of fused plastics, causes the excessive phenomenon of gluing, leads to the shearing resistance increase.

Further perfecting, the thimble sets up four at least on every core, and the thimble sets up one at least below every subchannel.

Further perfection, the cross section of the shearing blade is in an isosceles triangle shape, so that micro-filling plastics can be filled on two sides of the shearing blade to form a V-shaped groove, the shearing blade can be cut into the side gate side wall more easily, and deviation is not easy to occur.

Further perfect, be equipped with two spring mounting notches on the accepting groove, two spring mounting notches symmetric distribution are in blade activity groove both sides, place cutter reset spring in the spring mounting notch.

The utility model discloses profitable effect is: the utility model discloses

Drawings

Fig. 1 is a schematic view of the structure of the present invention;

fig. 2 is a schematic structural view taken along the direction a-a in fig. 1.

FIG. 3 is a schematic top view of the mold shown in FIG. 1 after being split in the direction I-I;

FIG. 4 is an enlarged view of the automatic glue-shearing device shown in FIG. 2;

FIG. 5 is an enlarged view of the structure of the cut-off return spring and the stopper in FIG. 4;

FIG. 6 is an enlarged view of the automatic glue-shearing device shown in FIG. 3;

description of reference numerals: 1. a positioning ring, 2, a sprue bush, 3, a fixed die base plate, 4, a fixed die plate, 5, a female die, 6, a male die, 7, a movable die plate, 8, a supporting plate, 9, a cushion block, 10, a movable die base plate, 11, a push plate, 12, an ejector pin fixing plate, 13, an ejector pin, 14, an ejector pin reset rod, 15, a reset spring, 16, a pulling rod, 17, a fixed die frame, 18, a branch runner, 19, a cavity, 20, a main runner, 21, a side sprue, 22, a movable die frame, 23, a core, 24, a parting surface, 25, a cold burden cave, 26, an ejector pin hole, 27, an automatic glue shearing device, 28, a containing groove, 29, a cutting knife, 30, a pressing plate, 31, a sliding block, 32, a guide rod, 33, a power storage spring, 34, a rotating frame, 35, a pull rope, 36, a blade, 37, a cutter reset spring, 38, a blade movable groove, 39, a rotating rod, 40, a pull rod, 41, an upper movable groove, 43. the device comprises a linkage rod, 44, rollers, 45, a guide rod seat, 46, counterbores, 47, spring mounting notches, 48, countersunk screws, 49, screw holes, 50, rod holes, 51, a tether ring, 52, notches, 53, limiting blocks, 54 and a plastic part.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

with reference to the accompanying drawings: the injection stamping die in the embodiment comprises a positioning ring 1, a sprue bush 2, a fixed die plate 3, a fixed die plate 4, a female die 5, a male die 6, a movable die plate 7, a supporting plate 8, a cushion block 9, a movable die plate 10, a push plate 11, an ejector pin fixing plate 12, an ejector pin 13, an ejector pin reset rod 14, a reset spring 15 and a material pulling rod 16, wherein the positioning ring 1 is arranged at the middle position on the fixed die plate 3, the sprue bush 2 is arranged in the positioning ring 1, the fixed die plate 4 is fixed below the fixed die plate 3, a fixed die frame 17 is arranged on the lower side of the fixed die plate 4, the female die 5 is embedded in the fixed die frame 17, the lower end of the sprue bush 2 extends to the lower surface of the female die 5, two bilaterally symmetrical branch runners 18 and two cavities 19 are arranged on the female die 5, the inner ends of the branch runners 18 are communicated with a main runner 20 in the sprue bush 2, and the, a movable mould frame 22 is arranged on the upper side of the movable mould plate 7, a male mould 6 is inlaid on the movable mould frame 22, two core cores 23 which are bilaterally symmetrical are arranged on the male mould 6, the core cores 23 are matched with the mould cavity 19, a support plate 8 is fixed below the movable mould plate, a cushion block 9 is respectively arranged on the left side and the right side below the support plate 8, a push plate 11 is arranged between the two cushion blocks 9, a thimble fixing plate 12 is fixedly connected on the push plate 11, a plurality of thimbles 13, four thimble reset rods 14 and a material pulling rod 16 are fixed on the thimble fixing plate 12, the four thimble reset rods 14 are positioned at the four corners of the thimble fixing plate 12, a reset spring 15 is arranged on the thimble reset rod 14, the upper end of the thimble reset rod 14 extends to a parting surface 24 of the mould, the material pulling rod 16 is positioned at the central position of the thimble fixing plate 12, the upper end of the material pulling rod 16 extends to a cold material, the upper end of the thimble 13 extends to the upper surface of the punch 6, the thimble 13 is distributed below the core 23 and the runner 18, the lower surface of the cushion block 9 is fixedly connected with a movable mould base plate 10, the movable mould base plate 10 is provided with a thimble hole 26, two sides of the side gate 21 are respectively provided with an automatic glue shearing device 27, the automatic glue shearing devices 27 are arranged in an accommodating groove 28 on the punch 6, each automatic glue shearing device 27 comprises a cutting knife 29, a pressing plate 30, a sliding block 31, a guide rod 32, a force storage spring 33, a rotating frame 34 and a pull rope 35, one end of the cutting knife 29 is provided with a cutting edge 36, the other end of the cutting knife 29 is fixed with the pressing plate 30, the pressing plate 30 is positioned in the accommodating groove 28, a cutter reset spring 37 is arranged between the pressing plate 30 and the inner wall of the accommodating groove 28, two ends of the blade movable groove 38 are respectively connected with the accommodating groove 28 and the side gate 21, the bottom, the guide rod 32 is provided with a power storage spring 33 and a sliding block 31 used for knocking the pressing plate, the top of the accommodating groove 28 is provided with a rotating frame 34, the rotating frame 34 comprises two rotating rods 39 and a pull rod 40, the lower ends of the two rotating rods 39 are respectively hinged on the inner walls of the two sides of the accommodating groove 28, the pull rod 40 is fixed between the upper parts of the two rotating rods 39, the pull rod 40 is connected with a pull rope 35, and the pull rope 35 is connected with the sliding block 31.

The working principle is as follows: this stamping die moulds plastics is single die joint injection mould, two chambeies of a mould, and its work flow is: injecting, filling, maintaining pressure, opening the mold, pushing out, closing the mold and locking the mold; firstly, during mold closing, a female mold 5 and a male mold 6 are closed to construct two forming chambers, a rotating rod 39 on a rotating frame 34 is pressed into a containing groove 28 by the female mold 5, the rotating rod 39 deflects to drive a pull rod 40 to move left, the pull rod 40 pulls an upper sliding block 31 on a guide rod 32 away from a pressure plate 30 through a pull rope 35, a force storage spring 33 compresses, the pressure plate 30 drives a cutter 29 on a blade movable groove 38 to open under the action of a cutter return spring 37 after not being pressed by the sliding block, so that a side sprue 21 is conducted, secondly, an injection molding machine starts to inject glue, a plastic part 54 is molded, a mold opening is carried out, a parting surface 24 is opened, a material pulling rod 16 pulls out a casting system, the casting system and the plastic part are left on a movable mold, after the parting surface 24 is opened, because the rotating rod 39 is not pressed by the female mold 5 any more, the force storage spring 33 extends, the rotating rod 39 bounces again, the sliding block 31 moves and hits the pressure plate 30 under the elastic force, thirdly, after the movable mold retreats to a certain distance, the ejector rod on the injection molding machine extends into the ejector rod hole 26, the push plate 11 and the ejector pin fixing plate 12 are touched to push the ejector pin reset rod 14, the ejector pin 13 and the pulling rod 16, and the ejector pin 13 and the pulling rod 16 push the separated plastic part 54 and the casting system to fall from the male mold 6. According to the design scheme, the opening and closing movement of the parting surfaces 24 of the female die 5 and the male die 6 is used as a power source for opening and closing of the cutting knife 29, so that automatic glue shearing of the side sprue 21 is realized, the workload of workers is reduced, and the production efficiency is improved.

While the invention has been shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the appended claims.

Claims

1. The utility model provides an injection molding stamping die which characterized by: comprises a positioning ring (1), a sprue bush (2), a fixed die base plate (3), a fixed die plate (4), a female die (5), a male die (6), a movable die plate (7), a bearing plate (8), a cushion block (9), a movable die base plate (10), a push plate (11), an ejector fixing plate (12), an ejector (13), an ejector reset rod (14), a reset spring (15) and a material pulling rod (16), wherein the positioning ring (1) is arranged at the middle position on the fixed die base plate (3), the sprue bush (2) is arranged in the positioning ring (1), the fixed die plate (4) is fixed below the fixed die base plate (3), a fixed die frame (17) is arranged at the lower side of the fixed die plate (4), the female die (5) is embedded in the fixed die frame (17), the lower end of the sprue bush (2) extends to the lower surface of the female die (5), and two symmetrical sub-runners (18) and two cavities (19, the inner end of the sub-runner (18) is communicated with a main runner (20) in the sprue bush (2), the outer end of the sub-runner (18) is communicated with the cavity (19) through a side sprue (21), a movable mould frame (22) is arranged on the upper side of the movable mould plate (7), a male mould (6) is inlaid on the movable mould frame (22), two cores (23) which are bilaterally symmetrical are arranged on the male mould (6), the cores (23) are matched with the cavity (19), a support plate (8) is fixed below the movable mould plate, two cushion blocks (9) are respectively arranged on the left side and the right side below the support plate (8), a push plate (11) is arranged between the two cushion blocks (9), a thimble fixing plate (12) is fixedly connected on the push plate (11), a plurality of thimbles (13), four thimble reset rods (14) and a material pulling rod (16) are fixed on the thimble fixing plate (12), and the four thimble reset rods (14) are positioned at four, reset spring (15) is installed on thimble reset rod (14), and thimble reset rod (14) upper end extends to die joint (24) of mould, draw material pole (16) to be located the central point of thimble fixed plate (12) and put, draw material pole (16) upper end to extend to in cold burden cave (25) of terrace die (6) upper surface, cold burden cave (25) are located sprue (20) below, thimble (13) upper end extends to terrace die (6) upper surface, thimble (13) distribute in core (23) and subchannel (18) below, fixed connection movable mould bedplate (10) below cushion (9), ejector pin hole (26) have been seted up on movable mould bedplate (10), side runner (21) both sides respectively are equipped with an automatic adhesive-shearing device (27), and automatic adhesive-shearing device (27) are installed in accepting groove (28) on terrace die (6), automatic adhesive-shearing device (27) are including cutting off cutter (29), The cutting-off device comprises a pressing plate (30), a sliding block (31), a guide rod (32), a force accumulation spring (33), a rotating frame (34) and a pull rope (35), wherein a shearing edge (36) is arranged at one end of a cutting-off cutter (29), the pressing plate (30) is fixed at the other end of the cutting-off cutter, a cutter reset spring (37) is arranged between the pressing plate (30) and the inner wall of the accommodating groove (28), the cutting-off cutter (29) is placed in a cutter movable groove (38), the two ends of the cutter movable groove (38) are respectively connected with the accommodating groove (28) and a side gate (21), the guide rod (32) is arranged at the bottom of the accommodating groove (28), the force accumulation spring (33) and the sliding block (31) used for knocking the pressing plate are arranged on the guide rod (32), the rotating frame (34) is arranged at the top of the accommodating groove (28), the rotating frame (34) comprises two rotating rods (39) and one pull rod (40), and the lower ends of the two rotating rods (, a pull rod (40) is fixed between the upper parts of the two rotating rods (39), the pull rod (40) is connected with a pull rope (35), and the pull rope (35) is connected with a sliding block (31).

2. An injection stamping die as claimed in claim 1, wherein: blade movable slot (38) comprise last movable slot (41) and lower movable slot (42), go up movable slot (41) and offer on die (5), cut sword (36) and be located movable slot (41) in, go up movable slot (41) inner and side runner (21) lateral wall intercommunication, go up movable slot (41) outer end and be located accepting groove (28) top, lower movable slot (42) are seted up on terrace die (6), and lower movable slot (42) inner does not communicate with side runner (21), and lower movable slot (42) outer end communicates accepting groove (28).

3. An injection stamping die as claimed in claim 2, wherein: the lower movable groove (42) is in a step shape, and the lower side of the cutting knife (29) is correspondingly made into a step shape.

4. An injection stamping die as claimed in claim 1, wherein: a linkage rod (43) is arranged between the upper ends of the two rotating rods (39), and a roller (44) is fixed on the linkage rod (43).

5. An injection stamping die as claimed in claim 1, wherein: the left end of the guide rod (32) is provided with a guide rod seat (45), two counter bores (46) are formed in the guide rod seat (45), counter screws (48) are arranged in the counter bores (46), the counter screws (48) are connected with screw holes (49) in the bottom surfaces of the accommodating grooves (28), rod holes (50) in the inner walls of the accommodating grooves (28) are inserted into the right end of the guide rod (32), and the rod holes (50) are located below the blade movable grooves (38).

6. An injection stamping die as claimed in claim 1, wherein: the number of the pull ropes (35) is at least two, and the pull ropes (35) are connected with the sliding block (31) and the pull rod (40) through rope tying rings (51).

7. An injection stamping die as claimed in claim 1, wherein: notches (52) are formed in the inner walls of the front side and the rear side of the accommodating groove (28), and limiting blocks (53) protruding to clamp the pressing plate (30) are embedded in the notches (52).

8. An injection stamping die as claimed in claim 1, wherein: the ejector pins (13) are arranged on each mold core (23) in at least four numbers, and at least one ejector pin (13) is arranged below each branch runner (18).

9. An injection stamping die as claimed in claim 1, wherein: the cross section of the shearing blade (36) is in an isosceles triangle shape.

10. An injection stamping die as claimed in claim 1, wherein: two spring mounting notches (47) are formed in the accommodating groove (28), the two spring mounting notches (47) are symmetrically distributed on two sides of the blade movable groove (38), and a cutter reset spring (37) is placed in each spring mounting notch (47).