CN213860437U

CN213860437U - Forming die of plastic spherical shell

Info

Publication number: CN213860437U
Application number: CN202022372699.8U
Authority: CN
Inventors: 杨振辉
Original assignee: Fujian Huian Huiteng Glass&plastic Co ltd
Current assignee: Fujian Huian Huiteng Glass&plastic Co ltd
Priority date: 2020-10-22
Filing date: 2020-10-22
Publication date: 2021-08-03
Anticipated expiration: 2030-10-22

Abstract

The utility model provides a forming die of plastics spherical shell, move, form the die cavity after the quiet template merges, be provided with the sprue with the die cavity intercommunication on the movable mould board, back push rod one end sets up on the movable mould board, the other end stretches into in the first push pedal after running through the intermediate lamella, intermediate lamella and movable mould board interval arrangement just can remove to the movable mould board, the bulge is aimed at to the other end on first push pedal to spherical shell push rod one end setting, sprue is aimed at to the other end on the second push pedal to mouth of a river material push rod one end setting, actuating mechanism is used for driving the action of first push pedal, first spring assembly sets up between intermediate lamella and movable mould board, second spring assembly places between first push pedal and intermediate lamella, sideboard and second push pedal interval arrangement, third spring assembly sets up between sideboard and second push pedal. The utility model discloses make mouth of a river material and plastics spherical shell successively drop, save mouth of a river material and pick up the process, avoid makeing mistakes and influence subsequent handling, and save man-hour.

Description

Forming die of plastic spherical shell

Technical Field

The utility model relates to a forming die of plastics spherical shell.

Background

The traditional Chinese medicine pills are usually packaged by using plastic spherical shells, and the plastic spherical shells are produced by adopting an injection mold. An injection mold is a tool for producing plastic products and also a tool for giving the plastic products complete structure and precise dimensions. The injection mold is provided with a material injection port for conveying materials to the mold cavity, waste materials (namely, water gap materials) can be remained at the material injection port after the plastic spherical shell is molded, and the plastic spherical shell and the water gap materials need to be taken off during demolding. In the prior art, the plastic spherical shell and the nozzle material drop off simultaneously, but the plastic spherical shell and the nozzle material are mixed together, a plurality of subsequent procedures for picking out the nozzle material are needed, the picking-out is usually carried out by using manpower or a mechanical arm, the manual picking-out is easy to make mistakes, once the mistakes are made, the serious adverse effect is caused to the subsequent procedures, and the cost is too high by using the mechanical arm.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the not enough of prior art, provide a forming die of plastics spherical shell, make mouth of a river material and plastics spherical shell successively drop, save mouth of a river material and pick up the process, avoid makeing mistakes and influence subsequent handling, and save man-hour.

The utility model discloses a following technical scheme realizes:

a plastic spherical shell forming die comprises a static die plate, a movable die plate and a demoulding mechanism, wherein the demoulding mechanism comprises a middle plate, a first push plate, a second push plate, a side plate, a first spring group, a second spring group, a third spring group, a rear push rod, a spherical shell push rod, a water gap material push rod and a driving mechanism, a hollow convex part is arranged on the movable die plate, the top of the convex part can be pushed outwards, the movable die plate and the static die plate are combined to form a die cavity, a filling port communicated with the die cavity is arranged on the movable die plate, one end of the rear push rod is arranged on the movable die plate, the other end of the rear push rod penetrates through the middle plate and then extends into the first push plate, the middle plate and the movable die plate are arranged at intervals and can move towards the movable die plate, one end of the spherical shell push rod is arranged on the first push plate, the other end of the spherical shell push rod is aligned with the convex part, one end of the water gap material push rod is arranged on the second push plate, the other end of the filling port is aligned with the filling port, the driving mechanism is used for driving the first push plate to move, the first spring group is arranged between the middle plate and the movable template, the second spring group is arranged between the first push plate and the middle plate, the side plates and the second push plate are arranged at intervals, and the third spring group is arranged between the side plates and the second push plate.

Further, actuating mechanism includes hydro-cylinder or cylinder, all be provided with the first hole of stepping down that supplies actuating mechanism to pass on sideboard and the second push pedal.

Furthermore, first push pedal is including the first riser and the second riser of closely arranging, and second riser and intermediate lamella interval arrangement offer the first through-hole that supplies the second spring group to pass on the second riser, are provided with the first recess of placing the second spring on the second riser.

Furthermore, the other end of the spherical shell push rod sequentially penetrates through the second push plate and the middle plate, extends into the movable template and is aligned with the protruding part; and the other end of the water gap material push rod penetrates through the middle plate, extends into the movable template and is aligned with the injection port.

Further, the injection port is communicated with the die cavity through a flow passage.

Furthermore, the middle parts of the four protruding parts which are arranged into a rectangle are provided with a feeding port which is respectively communicated with each die cavity through the four runners.

Furthermore, the die further comprises two ejector blocks which are arranged at intervals up and down, and the first push plate and the second push plate are slidably arranged between the two ejector blocks.

Furthermore, the mould still includes four horizontal poles, and horizontal pole one end setting is on quiet template and can be to the inside removal of quiet template, and the other end sets up on the intermediate lamella after passing the movable mould board.

Further, the bulge is the hemisphere, and the hemisphere top can be dismantled with the bottom and be connected, be provided with the concave recess that corresponds with each bulge respectively on the quiet template, the concave recess is the hemisphere that the radius is greater than the bulge.

The utility model discloses still realize through following technical scheme:

a demoulding method of a plastic spherical shell comprises the following steps:

A. during the forming process, under the action of thrust exerted by the outside, the movable template and the static template are combined, the distance between the middle plate and the movable template is shortened, the first spring group is compressed, the rear push rod pushes the first push plate and the second push plate backwards and is stacked together, and the third spring group is compressed;

B. when demoulding is started, under the action of pulling force applied by the outside, the movable template starts to be separated from the static template, meanwhile, the third spring group pushes the second push plate forwards, so that the nozzle material push rod is driven to move forwards to push out residual nozzle materials of the injection port, when the third spring group is completely reset, the nozzle materials are pushed out, and the middle plate is reset under the action of the first spring group;

C. after the nozzle material falls, the driving mechanism applies forward thrust to the first push plate, the first push plate drives the spherical shell push rod to move forward to push out the front end of the protruding part, so that the plastic spherical shell is demoulded, and at the moment, the second spring group is compressed;

D. and the pushing force applied by the driving mechanism is cancelled, and the first push plate is reset under the action of the second spring set.

The utility model discloses following beneficial effect has:

1. in the molding process, under the action of externally applied thrust (such as pressure applied to the plate by a press), the movable template and the static template are combined to form a mold cavity, the distance between the middle plate and the movable template is shortened, the first spring group is compressed, the first push plate and the second push plate are pushed backwards by the rear push rod and are stacked together, the third spring group is compressed, and injection molding materials are injected into the mold cavity through the injection port; when demoulding is started, under the action of pulling force applied by the outside, the movable template starts to be separated from the static template, meanwhile, the third spring group pushes the second push plate forwards, so that the nozzle material push rod is driven to move forwards to push out residual nozzle materials of the injection port, when the third spring group is completely reset, the nozzle materials are pushed out, and the middle plate is reset under the action of the first spring group; after the nozzle material falls, the driving mechanism applies forward thrust to the first push plate, the first push plate drives the spherical shell push rod to move forward to push out the front end of the protruding part, so that the plastic spherical shell is demoulded, and at the moment, the second spring group is compressed; thrust applied by the driving mechanism is cancelled, the first push plate resets under the action of the second spring group, in actual operation, when the movable template moves backwards to a certain point, the driving mechanism starts to apply force, so that the dropping time and the area of the plastic spherical shell are accurately controlled, the problem that the water gap material drops firstly can be solved, then the plastic spherical shell is demoulded, the water gap material and the plastic spherical shell drop in different areas respectively, the water gap material and the plastic spherical shell are separated completely, the process of picking the water gap material out is omitted, the problem that follow-up processes are influenced due to picking errors can be avoided, and working hours can be effectively saved.

Drawings

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

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view during molding of the present invention.

Fig. 3 is a schematic structural diagram of the movable die plate of the present invention.

Wherein, 1, a static template; 11. a recessed portion; 2. moving the template; 21. a projection; 22. a material injection port; 23. a third through hole; 31. a middle plate; 321. a first vertical plate; 332. a second vertical plate; 33. a second push plate; 34. a side plate; 35. a first spring; 36. a second spring; 37. a third spring; 38. a rear push rod; 39. a spherical shell push rod; 310. a nozzle material push rod; 4. a top block; 5. a cross bar; 6. the first hole of stepping down.

Detailed Description

As shown in fig. 1 to 3, the forming mold for the plastic spherical shell comprises a static mold plate 1, a dynamic mold plate 2, two top blocks 4, four cross bars 5 and a demolding mechanism. The movable template 2 is provided with a plurality of hollow hemispherical bulges 21, the movable template 2 is provided with a plurality of second through holes respectively corresponding to the bulges 21, the second through holes are communicated with the bulges 21, the tops and the bottoms of the bulges 21 are detachably connected, when a forming process is carried out, the tops and the bottoms are connected and combined together to form a hemisphere, and when demoulding is needed, the tops and the bottoms are separated and can be pushed outwards, so that the plastic spherical shell can be pushed out; the static template 1 is provided with a concave part 11 corresponding to each convex part 21, the concave part 11 is a hemisphere with a radius larger than the convex part 21, when the movable template 2 is combined with the static template 1, the convex part 21 is embedded into the concave part 11, a gap exists between the convex part 21 and the concave part 11, and the gap is a mold cavity. In order to convey raw materials into the mold cavity and improve the working efficiency, a plurality of injection ports 22 are further arranged on the movable mold plate 2, specifically, one injection port 22 is arranged in the middle of every four rectangular protruding portions 21, and when the movable mold plate 2 and the static mold plate 1 are combined, the injection ports 22 are respectively communicated with the mold cavity through four runners. The movable die plate 2 is also provided with fourth through holes respectively corresponding to the injection ports 22, and the fourth through holes are communicated with the injection ports 22. The specific structure of the detachable connection of the top and the bottom of the protruding portion 21 is the prior art. It is also known for the sprue 22 to communicate with the mold cavity via a runner.

The demoulding mechanism comprises a middle plate 31, a first push plate, a second push plate 33, a side plate 34, a first spring group, a second spring group, a third spring group, a rear push rod 38, a spherical shell push rod 39, a water gap material push rod 310 and a driving mechanism. Back push rod 38 one end sets up on movable mould board 2, the other end runs through in the first push pedal of stretching into behind intermediate lamella 31,

intermediate lamella

31 and 2 interval arrangements of movable mould board and can move to movable mould board 2, spherical shell push rod 39 one end sets up on first push pedal, the other end passes second push pedal 33 and intermediate lamella 31 back in proper order, extend to in the second through-hole of movable mould board 2 and aim at bulge 21, there is one section distance spherical shell push rod 39 this moment from bulge 21 top, during the drawing of patterns, spherical shell push rod 39 moves one section distance forward, can release bulge 21 top. One end of the nozzle material push rod 310 is arranged on the second push plate 33, and the other end of the nozzle material push rod 310 extends into the second through hole of the movable template 2 and is aligned with the injection port 22 after penetrating through the middle plate 31, at this time, the nozzle material push rod 310 has a certain distance from the injection port 22, and during demolding, the nozzle material push rod 310 moves forwards for a certain distance to enter the injection port 22, so that the nozzle material can be pushed out. The lengths of the nozzle material push rod 310 and the spherical shell push rod 39 are different, so that the spherical shell push rod 39 cannot push the plastic spherical shell in the process that the nozzle material push rod 310 pushes out the nozzle material. The driving mechanism is used for driving the first push plate to act, the first spring group is arranged between the middle plate 31 and the movable template 2 (two ends of the first spring group are respectively fixed on the middle plate 31 and the movable template 2), the second spring group is arranged between the first push plate and the middle plate 31, the side plate 34 and the second push plate 33 are arranged at intervals, and the third spring group is arranged between the side plate 34 and the second push plate 33 (two ends of the third spring group are respectively fixed on the side plate 34 and the second push plate 33). The two top blocks 4 are arranged between the side plate 34 and the middle plate 31 at intervals up and down, and the first push plate and the second push plate 33 are slidably arranged between the two top blocks 4. Four horizontal poles 5 set up respectively in the mould four corners, specifically, 1 four corners of quiet template all is provided with the protrusion piece, is provided with the second recess that extends to quiet in the mould on the protrusion piece, for matcing with

quiet template

1, and 2 four corners of movable mould board correspond the position and all are provided with corresponding concave yield, and the concave yield is provided with third through-

hole

23, and 5 one end settings of horizontal pole just can remove in the second recess, and 5 other ends of horizontal pole pass movable mould board 2 back settings on intermediate lamella 31.

The first push plate comprises a first vertical plate 321 and a second vertical plate 332 which are closely arranged, the second vertical plate 332 and the middle plate 31 are arranged at intervals, a first through hole for the second spring set to pass through is formed in the second vertical plate 332, a first groove for placing the second spring 36 is formed in the second vertical plate 332, and a second groove for placing the second spring 36 is formed in the middle plate 31. Since both ends of the second spring set are not fixedly connected to the second vertical plate 332 and the middle plate 31, the second spring set is not deformed although the first vertical plate 321 and the second vertical plate 332 are pushed backward by the rear push rod 38 in the molding process, and thus the second spring set does not affect the nozzle material push rod 310 in the demolding process.

In this embodiment, the driving mechanism is an oil cylinder, and the side plate 34 and the second push plate 33 are both provided with a first abdicating hole 6 for the driving mechanism to pass through. The driving mechanism passes through the relief holes on the side plate 34 and the second push plate 33 and then acts on the first vertical plate 321.

In the embodiment, the first spring set comprises two first springs 35, and the two first springs 35 are horizontally arranged in the middle of the movable die plate 2 and the middle plate 31 at intervals; the second spring group comprises four second springs 36, and the four second springs 36 are arranged at intervals at the upper part and the lower part of the middle plate 31 and the second vertical plate 332; the third spring group includes four third springs 37, and the four third springs 37 are spaced apart from each other at upper and lower portions of the second push plate 33 and the side plate 34.

The demolding method of the plastic spherical shell comprises the following steps:

A. in the forming process, under the action of a thrust force applied by the outside, the movable template 2 and the static template 1 are combined, the distance between the middle plate 31 and the movable template 2 is shortened, the first spring group is compressed, the rear push rod 38 pushes the first push plate and the second push plate 33 backwards and is stacked together, and the third spring group is compressed;

B. when demoulding is started, under the action of a pulling force applied by the outside, the movable template 2 starts to be separated from the static template 1, meanwhile, the third spring group pushes the second push plate 33 forwards, so that the nozzle material push rod 310 is driven to move forwards to push out the residual nozzle material of the injection port 22, when the third spring group is completely reset, the nozzle material is pushed out, and the intermediate plate 31 is reset under the action of the first spring group;

C. after the nozzle material falls, the driving mechanism applies forward thrust to the first push plate, the first push plate drives the spherical shell push rod 39 to move forward to push out the front end of the convex part 21, so that the plastic spherical shell is demoulded, and at the moment, the second spring group is compressed;

The above description is only a preferred embodiment of the present invention, and therefore the scope of the present invention should not be limited thereby, and all equivalent changes and modifications made within the scope of the claims and the specification should be considered within the scope of the present invention.

Claims

1. The utility model provides a forming die of plastics spherical shell which characterized in that: the demolding mechanism comprises a middle plate, a first push plate, a second push plate, a side plate, a first spring group, a second spring group, a third spring group, a rear push rod, a spherical shell push rod, a water gap material push rod and a driving mechanism, wherein the movable template is provided with a hollow protruding part, the top of the protruding part can be pushed outwards, the movable template and the static template are combined to form a mold cavity, the movable template is provided with a filling port communicated with the mold cavity, one end of the rear push rod is arranged on the movable template, the other end of the rear push rod penetrates through the middle plate and then extends into the first push plate, the middle plate and the movable template are arranged at intervals and can move towards the movable template, one end of the spherical shell push rod is arranged on the first push plate, the other end of the spherical shell push rod is aligned with the protruding part, one end of the water gap material push rod is arranged on the second push plate, the other end of the water gap material push rod is aligned with the filling port, the driving mechanism is used for driving the first push plate to move, the first spring group is arranged between the middle plate and the movable template, the second spring group is placed between the first push plate and the middle plate, the side plate and the second push plate are arranged at intervals, and the third spring group is arranged between the side plate and the second push plate.

2. The mold for molding a plastic spherical shell according to claim 1, wherein: the driving mechanism comprises an oil cylinder or an air cylinder, and first yielding holes for the driving mechanism to penetrate are formed in the side plate and the second push plate.

3. The mold for molding a plastic spherical shell according to claim 1, wherein: the first push plate comprises a first vertical plate and a second vertical plate which are closely arranged, the second vertical plate and the middle plate are arranged at intervals, a first through hole for the second spring set to pass through is formed in the second vertical plate, and a first groove for placing the second spring is formed in the second vertical plate.

4. A mold for molding a plastic spherical shell according to claim 1, 2 or 3, wherein: the other end of the spherical shell push rod sequentially penetrates through the second push plate and the middle plate, extends into the movable template and is aligned with the protruding part; and the other end of the water gap material push rod penetrates through the middle plate, extends into the movable template and is aligned with the injection port.

5. A mold for molding a plastic spherical shell according to claim 1, 2 or 3, wherein: the injection port is communicated with the die cavity through a runner.

6. The mold for molding a plastic spherical shell according to claim 5, wherein: and the middle parts of the four convex parts which are arranged into a rectangle are provided with a feeding port, and the feeding ports are respectively communicated with the die cavities through four runners.

7. A mold for molding a plastic spherical shell according to claim 1, 2 or 3, wherein: the die further comprises two ejector blocks which are arranged at intervals up and down, and the first push plate and the second push plate can be arranged between the two ejector blocks in a sliding mode.

8. A mold for molding a plastic spherical shell according to claim 1, 2 or 3, wherein: the mould also comprises four cross rods, one end of each cross rod is arranged on the static template and can move towards the inside of the static template, and the other end of each cross rod penetrates through the movable template and then is arranged on the middle plate.

9. A mold for molding a plastic spherical shell according to claim 1, 2 or 3, wherein: the convex part is the hemisphere, and the hemisphere top can be dismantled with the bottom and be connected, be provided with the concave recess that corresponds with each convex part respectively on the quiet template, the concave recess is the hemisphere that the radius is greater than the convex part.