CN113878806B

CN113878806B - Demolding device of plastic mold

Info

Publication number: CN113878806B
Application number: CN202111177343.1A
Authority: CN
Inventors: 邹龙云
Original assignee: Shenzhen Baotian Feida Mould Co ltd
Current assignee: Shenzhen Baotian Feida Mould Co ltd
Priority date: 2021-10-09
Filing date: 2021-10-09
Publication date: 2023-04-28
Anticipated expiration: 2041-10-09
Also published as: CN113878806A

Abstract

The invention relates to the field of plastic mold demolding treatment, in particular to a demolding device of a plastic mold, which comprises a bracket, a lower mold and an upper film pressing plate, wherein the lower mold is rotatably arranged in the bracket, the upper film pressing plate and the lower mold are arranged in a matching manner, and a portal frame is fixedly arranged at the top of the bracket; the lower mould is hollow groove structure setting, and the annular equidistant array in bottom surface has eight groups gas pockets in the lower mould, and the lower mould bottom is provided with the shrouding, the annular equidistant array in shrouding upper surface has eight groups of blocks, the blocks and gas pockets match and set up, annular equidistant array has six first springs between lower mould and the shrouding, every group be provided with two sets of electro-magnet that match in the first spring respectively, set up the lower mould into convertible structure, utilize the motor to drive its upset, can realize 360 rotation of scope, after the shaping, with the opening of lower mould down to set up movable receiving tray in the lower mould below, directly catch forming die and remove out the device, save the manual work, raise the efficiency.

Description

Demolding device of plastic mold

Technical Field

The invention belongs to the field of plastic mould production, and particularly relates to a demoulding device of a plastic mould.

Background

A plastic mold is a short term for a combination mold for compression molding, extrusion molding, injection, blow molding, and low foaming molding. The coordination change of the male die, the female die and the auxiliary forming system can process a series of plastic parts with different shapes and different sizes. In the processing process of plastic parts, an ejection demolding device is one of the vital equipment, a movable mold is arranged on a movable mold plate of an injection molding machine, a fixed mold is arranged on a fixed mold plate of the injection molding machine, a pouring system and a cavity are formed by closing the movable mold and the fixed mold during injection molding, and the movable mold and the fixed mold are separated during mold opening so as to take out plastic products.

The existing injection mold is generally difficult to demould, workers are often required to finish some operations, the operation is dangerous, manpower is wasted, and production efficiency is reduced; and the existing injection mold is ejected out of the mold after the mold is formed, so that the surface of the mold after injection molding is easily scratched, and the mold is damaged, thereby influencing the quality of the mold and reducing the practicability of the injection mold.

Disclosure of Invention

The invention provides a demolding device for a plastic mold, which comprises a bracket, a lower mold and an upper film pressing plate, wherein the lower mold is rotatably installed in the bracket, the upper film pressing plate and the lower mold are arranged in a matched mode, a lifting adjusting component is arranged between the upper film pressing plate and the bracket, a portal frame is fixedly installed at the top of the bracket, two groups of first air cylinders are symmetrically arranged at the top of the portal frame, and piston rod ends of the first air cylinders are fixedly connected with the upper surface of the upper film pressing plate;

the lower die is in a hollow groove structure, eight groups of air holes are annularly and equidistantly arranged on the bottom surface in the lower die, a sealing plate is arranged at the bottom of the lower die, eight groups of blocking blocks are annularly and equidistantly arranged on the upper surface of the sealing plate, the blocking blocks and the air holes are arranged in a matching manner, six groups of first springs are annularly and equidistantly arranged between the lower die and the sealing plate, and two groups of matched electromagnets are respectively arranged in each group of first springs;

the high-pressure air pipe is symmetrically arranged in the bracket in a sliding manner, one end of the high-pressure air pipe extending to the bracket is fixedly communicated with a nozzle, the nozzle is matched with the air hole, the other end of the high-pressure air pipe is fixedly communicated with an external air compressor, two groups of second air cylinders are fixedly arranged on the outer wall of the bracket, a connecting sleeve is arranged on the surface of the high-pressure air pipe, and the connecting sleeve is fixedly arranged at the telescopic rod end of the second air cylinders;

the bottom in the bracket is slidably provided with a receiving tray.

Further, the support comprises a bottom plate and two groups of vertical plates, and the two groups of vertical plates are symmetrically arranged on two sides of the upper surface of the bottom plate.

Further, the two sides of the outer wall of the lower die are symmetrically provided with supporting shafts, one ends of the supporting shafts are respectively and fixedly provided with a first rotating shaft and a second rotating shaft, and the first rotating shaft and the second rotating shaft are respectively and rotatably arranged in the two groups of vertical plates through deep groove ball bearings.

Further, the first rotating shaft one end transmission is connected with the upset drive assembly, upset drive assembly includes first motor, first synchronous pulley and second synchronous pulley, first synchronous pulley fixed mounting is in the output axle head of first motor, first motor fixed mounting is in one side riser top, second synchronous pulley fixed mounting is in first rotating shaft surface, first synchronous pulley and second synchronous pulley transmission are connected.

Further, the lifting adjusting assembly comprises a transition plate, two groups of screw rods and an elastic connecting column, the transition plate is fixedly connected with the two groups of vertical plates through the elastic connecting column, a threaded sleeve is connected to the surface of the screw rods in a threaded manner, the threaded sleeve is rotatably installed in the transition plate through a linear bearing, and the bottom end of the screw rod is rotatably installed in the upper film pressing plate through a deep groove ball bearing.

Further, the lifting driving assembly is in transmission connection with the screw rod, the lifting driving assembly comprises a second motor, a first sprocket and a second sprocket, the first sprocket is fixedly arranged at the output shaft end of the second motor, the second motor is fixedly arranged on the upper surface of the transition plate, the second sprocket is fixedly arranged on the surface of the outer ring of the screw sleeve, and the first sprocket is in transmission connection with the second sprocket.

Further, the elastic connecting column comprises a hollow upright column, a sliding support column and a second spring, wherein the top of the sliding support column is fixedly connected to the lower surface of the transition plate, the sliding support column is fixedly arranged at the top of the upright plate, the sliding support column is slidably arranged in the hollow upright column, and the second spring is fixedly arranged between the hollow upright column and the sliding support column.

Further, the outer diameter of the receiving tray is larger than the opening size of the lower die, and the outer diameter of the receiving tray is not larger than the vertical distance between the two sets of vertical plates.

Further, a group of linear guide rails and a group of electric sliding tables are fixedly arranged on the upper surface of the bottom plate, third springs are fixedly arranged on moving blocks of the linear guide rails and the electric sliding tables, and the material receiving disc is fixedly arranged at the tops of the third springs.

The beneficial effects of the invention are as follows:

according to the invention, the lower die is arranged into a turnover structure, the turnover structure is driven by the motor, 360-degree rotation can be realized, after forming, the opening of the lower die faces downwards, and a movable receiving tray is arranged below the lower die, so that the forming die is directly received and moved out of the device, labor is saved, and efficiency is improved;

according to the invention, the bottom of the lower die is provided with the opening-closing type sealing plate, a group of electromagnets which are matched with each other are arranged between the lower die and the sealing plate, the electromagnets are started to enable the sealing plate to be attached to the lower die, at the moment, the blocking piece is pushed into the air holes, the bottom surface of the lower die is flat and forms a closed bottom, the normal forming operation of the plastic die can be realized, when the die is removed, the electromagnets are powered off, the sealing plate and the lower die are separated, the air holes are opened, the high-pressure air pipe is matched for carrying out high-pressure blowing on the plastic die in the lower die, the die is assisted to remove the die, and high-pressure air is uniformly supplied in the air holes, so that the die is prevented from being damaged by a conventional stripping means.

In addition, the upper film pressing plate is provided with two-stage lifting, the cylinder and the first motor drive the screw rod to rotate so as to realize the movement of the upper film pressing plate, and the arrangement has the advantages that the upper and lower spaces of the demolding device are saved through the arrangement of the screw rod, but the practicability of various molds with different specifications can be realized, and the lifting accuracy of the cylinder is utilized through the arrangement of the cylinder.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 shows a schematic perspective view of an embodiment of the present invention;

FIG. 2 shows a schematic diagram of a front view of an embodiment of the present invention;

FIG. 3 shows a schematic top view of an embodiment of the present invention;

FIG. 4 is an enlarged schematic view of the portion A of FIG. 1 according to an embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view showing a closed state of a lower die and a closing plate according to an embodiment of the present invention;

fig. 6 shows a schematic cross-sectional view of an elastic connection column according to an embodiment of the present invention.

In the figure: 1. a bracket; 101. a bottom plate; 102. a vertical plate; 2. a lower die; 201. air holes; 202. a support shaft; 203. a first rotating shaft; 204. a second rotating shaft; air holes; 3. a film pressing plate; 4. a lifting adjusting component; 401. a transition plate; 402. a screw rod; 403. an elastic connection column; 4031. a hollow upright; 4032. a sliding pillar; 4033. a second spring; 404. a screw sleeve; 5. a portal frame; 6. a first cylinder; 7. a sealing plate; 701. blocking; 702. a first spring; 703. an electromagnet; 8. a high pressure gas pipe; 801. a nozzle; 9. a second cylinder; 10. a flip drive assembly; 1001. a first motor; 1002. a first synchronous pulley; 1003. a second synchronous pulley; 11. a rotating plate; 1101. a second motor; 1102. a first sprocket; 1103. a second sprocket; 12. a receiving tray; 13. a linear guide rail; 14. an electric sliding table; 15. and a third spring.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

According to the attached drawings 1-6, a demolding device of a plastic mold is provided, which comprises a bracket 1, a lower mold 2 and an upper film pressing plate 3, wherein the lower mold 2 is rotatably installed in the bracket 1, the upper film pressing plate 3 and the lower mold 2 are arranged in a matched mode, a lifting adjusting component 4 is arranged between the upper film pressing plate 3 and the bracket 1, a portal frame 5 is fixedly installed at the top of the bracket 1, two groups of first air cylinders 6 are symmetrically arranged at the top of the portal frame 5, and the piston rod ends of the first air cylinders 6 are fixedly connected with the upper surface of the upper film pressing plate 3;

referring to four groups of lifting adjusting assemblies 4 arranged on the upper film pressing plate 3 and the bracket 1 shown in fig. 1, the distance between the upper film pressing plate 3 and the lower die 2 is conveniently adjusted according to different die forming requirements, and the upper film pressing plate 3 is arranged, so that not only can the simple planar plastic dies be pressed and formed, but also an upper die matched with the internal shape of the lower die 2 can be arranged at the bottom of the upper film pressing plate 3;

referring to fig. 1, fig. 2 and fig. 5, the lower die 2 is provided with a hollow groove structure, the hollow groove structure is provided with a die which is not needed by molding, the molding universality of the plastic die is improved, eight groups of air holes 201 are formed in the annular equidistant array of the bottom surface in the lower die 2, a sealing plate 7 is arranged at the bottom of the lower die 2, eight groups of blocking blocks 701 are formed in the annular equidistant array of the upper surface of the sealing plate 7, the blocking blocks 701 and the air holes 201 are matched, six groups of first springs 702 are arranged in the annular equidistant array between the lower die 2 and the sealing plate 7, two groups of matched m703 are respectively arranged in each group of first springs 702, when molding production is needed, an electromagnet 703 is started, so that the sealing plate 7 is attached to the lower die 2, at the moment, the blocking blocks 701 are pushed into the air holes 201, the bottom surface of the lower die 2 is flat, the closed bottom is formed, normal molding operation of the plastic die is guaranteed, the electromagnet 703 is powered off, the sealing plate 7 and the air holes 201 are opened.

Referring to fig. 1, 2 and 4, a high-pressure air pipe 8 is symmetrically and slidingly arranged in the bracket 1, one end of the high-pressure air pipe 8 extending into the bracket 1 is fixedly communicated with a nozzle 801, the nozzle 801 and the air hole 201 are matched and arranged, the other end of the high-pressure air pipe 8 is fixedly communicated with an external air compressor, two groups of second air cylinders 9 are fixedly arranged on the outer wall of the bracket 1, a connecting sleeve 802 is arranged on the surface of the high-pressure air pipe 8, the connecting sleeve 802 is fixedly arranged at the telescopic rod end of the second air cylinder 9, during demolding, a motor is started to drive a lower mold 2 to rotate, after an air hole 201 faces upwards, the second air cylinder 9 is started to drive the high-pressure air pipe 8 to move, the nozzle 801 is enabled to move to the upper side of the air hole 201, the air compressor is started to supply high-pressure air to assist demolding, and high-pressure air is uniformly supplied in the air hole 201, so that the mold is prevented from being damaged by a conventional demolding means;

preferably, the nozzle 801 may spray low-pressure or high-pressure gas during the mold processing process to cool the demolding device and the lower mold, and may be moved to achieve auxiliary demolding when the temperature of the lower mold reaches a desired temperature.

Referring to fig. 1 and 2, the bracket 1 includes a bottom plate 101 and two sets of vertical plates 102, the two sets of vertical plates 102 are symmetrically installed on two sides of the upper surface of the bottom plate 101, a receiving tray 12 is slidably installed in the bottom of the bracket 1, the outer diameter of the receiving tray 12 is larger than the opening size of the lower die 2, the outer diameter of the receiving tray 12 is not larger than the vertical distance between the two sets of vertical plates 102, a set of linear guide 13 and a set of electric sliding table 14 are fixedly installed on the upper surface of the bottom plate 101, a third spring 15 is fixedly installed on the moving blocks of the linear guide 13 and the electric sliding table 14, the receiving tray 12 is fixedly installed at the top of the third spring 15, after the demolding is successful, a plastic mold falls onto the receiving tray 12, the electric sliding table 14 is started, and the plastic mold is sent out of the bracket 1, and is convenient to take out.

Referring to fig. 1, fig. 2 and fig. 3, two sides of the outer wall of the lower die 2 are symmetrically provided with a supporting shaft 202, one end of the supporting shaft 202 is fixedly provided with a first rotating shaft 203 and a second rotating shaft 204 respectively, the first rotating shaft 203 and the second rotating shaft 204 are respectively rotatably installed in two sets of vertical plates 102 through deep groove ball bearings, one end of the first rotating shaft 203 is in transmission connection with a turnover driving assembly 10, the turnover driving assembly 10 comprises a first motor 1001, a first synchronous pulley 1002 and a second synchronous pulley 1003, the first synchronous pulley 1002 is fixedly installed at the output shaft end of the first motor 1001, the first motor 1001 is fixedly installed at the top of one side of the vertical plate 102, the second synchronous pulley 1003 is fixedly installed on the surface of the first rotating shaft 203, the first synchronous pulley 1002 and the second synchronous pulley 1003 are in transmission connection, after a plastic die is formed, the turnover driving assembly 10 is started, the lower die 2 is turned over, and an opening of the lower die faces to the material receiving disc 12, and the self weight of the plastic die is utilized to improve a certain auxiliary effect.

Referring to fig. 1, 2 and 6, the lifting adjusting assembly 4 is provided with four groups, the four groups of lifting adjusting assemblies 4 are symmetrically installed at the tops of the two groups of vertical plates 102, the lifting adjusting assembly 4 comprises a transition plate 401, two groups of screw rods 402 and an elastic connecting column 403, the transition plate 401 is fixedly connected with the two groups of vertical plates 102 through the elastic connecting column 403, a screw sleeve 404 is connected with the surface of the screw rod 402 in a threaded manner, the screw sleeve 404 is rotatably installed in the transition plate 401 through a linear bearing, the bottom end of the screw rod 402 is rotatably installed in the upper film pressing plate 3 through a deep groove ball bearing, the elastic connecting column 403 comprises a hollow upright column 4031, a sliding support 4032 and a second spring 4033, the top of the sliding support 4032 is fixedly connected to the lower surface of the transition plate 401, the sliding support 4032 is fixedly installed at the top of the vertical plate 102, the sliding support 4032 is slidably installed in the hollow upright 4031, the second spring 4033 is fixedly installed between the hollow upright 4031 and the sliding support 4032, the supporting of the transition plate 401 can be achieved by means of the elastic sliding connection relationship between the hollow upright 4031 and the sliding support 4032, and when the telescopic rod end of the first cylinder 6 is pressed down, the hollow upright 4031 moves down to the inner bottom of the sliding support 4032 in a following mode, and the upper film pressing plate 3 cannot be subjected to plastic die forming operation.

Referring to fig. 1 and 2, a lifting driving assembly 11 is drivingly connected between the screw rods 402, the lifting driving assembly 11 includes a second motor 1101, a first sprocket 1102 and a second sprocket 1103, the first sprocket 1102 is fixedly mounted at an output shaft end of the second motor 1101, the second motor 1101 is fixedly mounted on an upper surface of the transition plate 401, the second sprocket 1103 is fixedly mounted on an outer ring surface of the screw sleeve 404, the first sprocket 1102 is drivingly connected with the second sprocket 1103, and when the device is specifically used, the second motor 1101 is started to drive the two groups of screw rods 402 to rotate sequentially through the first sprocket 1102 and the second sprocket 1103, and in a rotating process, a space between the upper film pressing plate 3 and the lower film pressing plate 2 is changed.

Although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a shedder of plastic mould, includes support (1), lower mould (2) and upper film clamp plate (3), its characterized in that: the lower die (2) is rotatably arranged in the support (1), the upper film pressing plate (3) and the lower die (2) are arranged in a matched mode, a lifting adjusting assembly (4) is arranged between the upper film pressing plate (3) and the support (1), a portal frame (5) is fixedly arranged at the top of the support (1), two groups of first air cylinders (6) are symmetrically arranged at the top of the portal frame (5), and piston rod ends of the first air cylinders (6) are fixedly connected with the upper surface of the upper film pressing plate (3);

the lower die (2) is in a hollow groove structure, eight groups of air holes (201) are formed in the annular equidistant array of the inner bottom surface of the lower die (2), a sealing plate (7) is arranged at the bottom of the lower die (2), eight groups of blocking blocks (701) are formed in the annular equidistant array of the upper surface of the sealing plate (7), the blocking blocks (701) and the air holes (201) are arranged in a matched mode, six groups of first springs (702) are arranged in the annular equidistant array between the lower die (2) and the sealing plate (7), and two groups of matched electromagnets (703) are respectively arranged in each group of first springs (702);

the high-pressure air pipe (8) is symmetrically and slidingly arranged in the support (1), one end of the high-pressure air pipe (8) extending into the support (1) is fixedly communicated with a nozzle (801), the nozzle (801) and the air hole (201) are matched, the other end of the high-pressure air pipe (8) is fixedly communicated with an external air compressor, two groups of second air cylinders (9) are fixedly arranged on the outer wall of the support (1), a connecting sleeve (802) is arranged on the surface of the high-pressure air pipe (8), and the connecting sleeve (802) is fixedly arranged at the telescopic rod end of the second air cylinders (9);

a receiving tray (12) is slidably arranged at the inner bottom of the bracket (1); supporting shafts (202) are symmetrically arranged on two sides of the outer wall of the lower die (2), a first rotating shaft (203) and a second rotating shaft (204) are fixedly arranged at one end of each supporting shaft (202), and the first rotating shaft (203) and the second rotating shaft (204) are rotatably arranged in the two groups of vertical plates (102) through deep groove ball bearings respectively;

one end of the first rotating shaft (203) is in transmission connection with a turnover driving assembly (10), the turnover driving assembly (10) comprises a first motor (1001), a first synchronous pulley (1002) and a second synchronous pulley (1003), the first synchronous pulley (1002) is fixedly arranged at the output shaft end of the first motor (1001), the first motor (1001) is fixedly arranged at the top of a side vertical plate (102), the second synchronous pulley (1003) is fixedly arranged on the surface of the first rotating shaft (203), and the first synchronous pulley (1002) is in transmission connection with the second synchronous pulley (1003);

the outer diameter of the receiving tray (12) is larger than the opening size of the lower die (2), and the outer diameter of the receiving tray (12) is not larger than the vertical distance between the two groups of vertical plates (102);

the automatic feeding device is characterized in that a group of linear guide rails (13) and a group of electric sliding tables (14) are fixedly arranged on the upper surface of a bottom plate (101) of the support (1), third springs (15) are fixedly arranged on moving blocks of the linear guide rails (13) and the electric sliding tables (14), and the material receiving disc (12) is fixedly arranged at the tops of the third springs (15).

2. The demolding device for plastic molds according to claim 1, wherein: the bracket (1) comprises a bottom plate (101) and two groups of vertical plates (102), wherein the two groups of vertical plates (102) are symmetrically arranged on two sides of the upper surface of the bottom plate (101).

3. The demolding device for plastic molds according to claim 2, wherein: the lifting adjusting assembly (4) comprises a transition plate (401), two groups of screw rods (402) and an elastic connecting column (403), the transition plate (401) is fixedly connected with the two groups of vertical plates (102) through the elastic connecting column (403), screw sleeves (404) are connected to the surfaces of the screw rods (402) in a threaded mode, the screw sleeves (404) are rotatably installed in the transition plate (401) through linear bearings, and the bottom ends of the screw rods (402) are rotatably installed in an upper film pressing plate (3) through deep groove ball bearings.

4. A demolding device for plastic molds according to claim 3, wherein: the novel lifting device is characterized in that a lifting driving assembly (11) is connected between the screw rods (402) in a transmission mode, the lifting driving assembly (11) comprises a second motor (1101), a first sprocket (1102) and a second sprocket (1103), the first sprocket (1102) is fixedly mounted at the output shaft end of the second motor (1101), the second motor (1101) is fixedly mounted on the upper surface of the transition plate (401), the second sprocket (1103) is fixedly mounted on the outer ring surface of the screw sleeve (404), and the first sprocket (1102) is in transmission connection with the second sprocket (1103).

5. A demolding device for plastic molds according to claim 3, wherein: the elastic connection column (403) comprises a hollow upright column (4031), a sliding support column (4032) and a second spring (4033), wherein the top of the sliding support column (4032) is fixedly connected to the lower surface of the transition plate (401), the sliding support column (4032) is fixedly arranged at the top of the upright plate (102), the sliding support column (4032) is slidably arranged in the hollow upright column (4031), and the second spring (4033) is fixedly arranged between the hollow upright column (4031) and the sliding support column (4032).