CN113878806A

CN113878806A - Demoulding device of plastic mould

Info

Publication number: CN113878806A
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: 2022-01-04
Anticipated expiration: 2041-10-09
Also published as: CN113878806B

Abstract

The invention relates to the field of demoulding treatment of plastic moulds, in particular to a demoulding device of a plastic mould, which comprises a bracket, a lower mould and an upper film pressing plate, wherein the lower mould is rotatably arranged in the bracket; the lower mould is the setting of hollow groove structure, and the equidistant array of bottom surface annular has eight groups of gas pockets in the lower mould, and the lower mould bottom is provided with the shrouding, the equidistant array of shrouding upper surface annular has eight groups of sprue, sprue and gas pocket matching set up, the equidistant array of annular has six first springs of group, every group between lower mould and the shrouding be provided with two sets of assorted electro-magnets in the first spring respectively, set up the lower mould into convertible structure, utilize the motor to drive its upset, can realize 360 degrees rotations of scope, after the shaping, with the opening of lower mould down to set up portable take-up (stock) dish in the lower mould below, directly catch forming die and remove the device, save artifically, raise the efficiency.

Description

Demoulding device of plastic mould

Technical Field

The invention belongs to the field of plastic mold production, and particularly relates to a demolding device for a plastic mold.

Background

The plastic mold is a short name for a combined mold used 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 of the die can process a series of plastic parts with different shapes and sizes. In the process of processing plastic parts, an ejection demoulding device is one of vital equipment, a movable mould is arranged on a movable mould plate of an injection moulding machine, a fixed mould is arranged on a fixed mould plate of the injection moulding machine, the movable mould and the fixed mould are closed to form a pouring system and a cavity during injection moulding, and the movable mould and the fixed mould are separated to take out plastic products during mould opening.

The existing injection mold generally has the condition of difficult demolding, and workers are often required to complete some operations, so that the operation is dangerous, the manpower is wasted, and the production efficiency is reduced; and the existing injection mold ejects the mold to demold after the mold is formed, so that the surface of the mold after injection molding is easily scratched, the mold is damaged, the quality of the mold is influenced, and the practicability of the injection mold is reduced.

Disclosure of Invention

Aiming at the problems, the invention provides a demoulding device of a plastic mould, which comprises a support, a lower mould and an upper membrane pressing plate, wherein the lower mould is rotatably arranged in the support, the upper membrane pressing plate and the lower mould are arranged in a matching way, a lifting adjusting component is arranged between the upper membrane pressing plate and the support, a portal frame is fixedly arranged at the top of the support, two groups of first cylinders are symmetrically arranged at the top of the portal frame, and the piston rod ends of the first cylinders are fixedly connected with the upper surface of the upper membrane pressing plate;

the lower die is arranged in a hollow groove structure, eight groups of air holes are formed in an annular equidistant array on the inner bottom surface of the lower die, a sealing plate is arranged at the bottom of the lower die, eight groups of blocking blocks are arranged on the annular equidistant array on the upper surface of the sealing plate, the blocking blocks are arranged in a matched manner with the air holes, six groups of first springs are arranged in the annular equidistant array between the lower die and the sealing plate, and two groups of matched electromagnets are arranged in each group of first springs respectively;

the air compressor is characterized in that high-pressure air pipes are symmetrically and slidably arranged in the support, one end of each high-pressure air pipe extending into the support is fixedly communicated with a nozzle, the nozzles and air holes are arranged in a matched mode, the other end of each 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 support, connecting sleeves are arranged on the surfaces of the high-pressure air pipes, and the connecting sleeves are fixedly arranged at the telescopic rod ends of the second air cylinders;

and a material receiving disc is slidably arranged at the bottom in the bracket.

Furthermore, 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 support shafts are symmetrically arranged on two sides of the outer wall of the lower die, a first rotating shaft and a second rotating shaft are fixedly mounted at one end of each support shaft respectively, and the first rotating shaft and the second rotating shaft are rotatably mounted in the two groups of vertical plates through deep groove ball bearings respectively.

Furthermore, one end of the first rotating shaft is in transmission connection with a turnover driving assembly, the turnover driving assembly comprises a first motor, a first synchronous belt pulley and a second synchronous belt pulley, the first synchronous belt pulley is fixedly installed at the output shaft end of the first motor, the first motor is fixedly installed at the top of a side vertical plate, the second synchronous belt pulley is fixedly installed on the surface of the first rotating shaft, and the first synchronous belt pulley is in transmission connection with the second synchronous belt pulley.

Furthermore, 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, the surfaces of the screw rods are in threaded connection with threaded sleeves, the threaded sleeves are rotatably installed in the transition plate through linear bearings, and the bottom ends of the screw rods are rotatably installed in the upper membrane pressing plate through deep groove ball bearings.

Furthermore, a lifting driving assembly is connected between the screw rods in a transmission manner and comprises a second motor, a first chain wheel and a second chain wheel, the first chain wheel is fixedly installed at the output shaft end of the second motor, the second motor is fixedly installed on the upper surface of the transition plate, the second chain wheel is fixedly installed on the surface of the outer ring of the threaded sleeve, and the first chain wheel is in transmission connection with the second chain wheel.

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

Furthermore, the outer diameter of the material receiving disc is larger than the opening size of the lower die, and the outer diameter of the material receiving disc is not larger than the vertical distance between the two groups of vertical plates.

Further, a set of linear guide and a set of electronic slip table are fixedly mounted to the bottom plate upper surface, fixed mounting has the third spring on the movable block of linear guide and electronic slip table, take-up (stock) pan fixed mounting is in third spring top.

The invention has the beneficial effects that:

according to the invention, the lower die is arranged into a turnover structure, the lower die is driven to turn over by using the motor, the rotation within a range of 360 degrees can be realized, after the lower die is formed, the opening of the lower die is downward, the movable material receiving disc is arranged below the lower die, and the forming die is directly received and moved out of the device, so that the labor is saved and the efficiency is improved;

according to the invention, the bottom of the lower die is provided with the opening-closing type sealing plate, the group of electromagnets which are matched with each other is 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 plugging block is pushed into the air hole, the bottom surface of the lower die is flat and forms a closed bottom, the realization of the normal forming operation of the plastic die is ensured, when the plastic die is demolded, the electromagnets are powered off, the sealing plate and the lower die are separated, the air hole is opened, the plastic die in the lower die is blown at high pressure by matching with the high-pressure air pipe, the demolding is assisted, the high-pressure air is uniformly supplied in the air hole, and the damage to the die caused by the conventional demolding means is prevented.

In addition, the upper membrane pressing plate has two-stage lifting, the cylinder and the first motor drive the screw rod to rotate so as to realize the movement of the upper membrane pressing plate, and the arrangement has the advantages that the space above and below the demoulding device is saved through the arrangement of the screw rod, the practicability of moulds 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 will 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 in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

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

FIG. 2 illustrates a front view structural schematic diagram 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 part A of FIG. 1 according to an embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of a lower die and a closing plate in a closed position in accordance with an embodiment of the present invention;

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

In the figure: 1. a support; 101. a base 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 membrane pressing plate is arranged; 4. a lift adjustment assembly; 401. a transition plate; 402. a screw rod; 403. an elastic connecting column; 4031. a hollow upright post; 4032. a sliding support; 4033. a second spring; 404. a threaded sleeve; 5. a gantry; 6. a first cylinder; 7. closing the plate; 701. blocking; 702. a first spring; 703. an electromagnet; 8. a high-pressure air pipe; 801. a nozzle; 9. a second cylinder; 10. a turnover drive assembly; 1001. a first motor; 1002. a first timing pulley; 1003. a second timing pulley; 11. a rotating plate; 1101. a second motor; 1102. a first sprocket; 1103. a second sprocket; 12. a take-up pan; 13. a linear guide rail; 14. an electric sliding table; 15. and a third spring.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The demolding device for the plastic mold comprises a support 1, a lower mold 2 and an upper film pressing plate 3, wherein the lower mold 2 is rotatably installed in the support 1, the upper film pressing plate 3 and the lower mold 2 are arranged in a matching 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 installed 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 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 fig. 1, four sets of lifting adjusting assemblies 4 are arranged on an upper film pressing plate 3 and a support 1, so that the distance between the upper film pressing plate 3 and a lower die 2 can be adjusted conveniently according to different die forming requirements, the upper film pressing plate 3 is arranged, simple planar plastic dies can be pressed and formed, and an upper forming die matched with the inner shape of the lower die 2 can be arranged at the bottom of the upper film pressing plate 3;

referring to fig. 1, 2 and 5, the lower mold 2 is configured in a hollow groove structure, the hollow groove structure is configured to be able to install a mold that does not pass through the molding requirement, so as to improve the molding universality of the plastic mold, the inner bottom surface of the lower mold 2 is annularly and equidistantly arrayed with eight groups of air holes 201, the bottom of the lower mold 2 is provided with a sealing plate 7, the upper surface of the sealing plate 7 is annularly and equidistantly arrayed with eight groups of plugs 701, the plugs 701 and the air holes 201 are arranged in a matching manner, the annular and equidistant array between the lower mold 2 and the sealing plate 7 is provided with six groups of first springs 702, two groups of matched m703 are respectively arranged in each group of the first springs 702, when the molding production is required, the electromagnet 703 is started to attach the sealing plate 7 to the lower mold 2, at this time, the plugs 701 are pushed into the air holes 201, so that the bottom surface of the lower mold 2 is flat and forms a closed bottom, thereby ensuring that the normal molding operation of the plastic mold can be realized, when demoulding, the electromagnet 703 is powered off, so that the sealing plate 7 and the lower die 2 are separated, and the air hole 201 is opened.

Referring to fig. 1, 2 and 4, the bracket 1 is symmetrically and slidably provided with a high pressure air pipe 8, one end of the high-pressure air pipe 8 extending into the support 1 is fixedly communicated with a nozzle 801, the nozzle 801 is matched with the air hole 201, 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 end of the telescopic rod of the second air cylinder 9, when demoulding, after the first motor 1001 of the starting motor drives the lower die 2 to rotate, the 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 moves above the air hole 201, the air compressor starts high-pressure air supply to assist demolding, the high-pressure air is uniformly supplied into the air hole 201, and the conventional demolding means is prevented from damaging the mold;

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

Referring to fig. 1 and 2, the support 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 material receiving tray 12 is installed at the bottom of the support 1 in a sliding manner, the outer diameter of the material receiving tray 12 is larger than the opening size of the lower die 2, the outer diameter of the material receiving tray 12 is not larger than the vertical distance between the two sets of vertical plates 102, a set of linear guide rails 13 and a set of electric sliding tables 14 are fixedly installed on the upper surface of the bottom plate 101, third springs 15 are fixedly installed on moving blocks of the linear guide rails 13 and the electric sliding tables 14, the material receiving tray 12 is fixedly installed at the tops of the third springs 15, and after demolding is successful, a plastic mold falls into the material receiving tray 12, the electric sliding tables 14 are started, and is sent out of the support 1, so as to be taken out conveniently.

Referring to fig. 1, 2 and 3, support shafts 202 are symmetrically arranged on two sides of an outer wall of a lower mold 2, a first rotating shaft 203 and a second rotating shaft 204 are respectively and fixedly installed at one end of each support shaft 202, the first rotating shaft 203 and the second rotating shaft 204 are respectively and 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 includes a first motor 1001, a first synchronous pulley 1002 and a second synchronous pulley 1003, the first synchronous pulley 1002 is fixedly installed at an output shaft end of the first motor 1001, the first motor 1001 is fixedly installed at the top of one 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 is in transmission connection with the second synchronous pulley 1003, after a plastic mold is molded, the turnover driving assembly 10 is started, after the lower die 2 is turned over, the opening of the lower die faces the material receiving disc 12, and certain auxiliary effect is improved for demoulding by using the self weight of the plastic die.

Referring to fig. 1, 2 and 6, the lifting adjusting assemblies 4 are provided with four sets, and the four sets of lifting adjusting assemblies 4 are symmetrically installed on the tops of two sets of vertical plates 102, the lifting adjusting assemblies 4 include a transition plate 401, two sets of screw rods 402 and an elastic connecting column 403, the transition plate 401 is fixedly connected with the two sets of vertical plates 102 through the elastic connecting column 403, the surface of the screw rod 402 is in threaded connection with a threaded sleeve 404, the threaded 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 membrane pressing plate 3 through a deep groove ball bearing, the elastic connecting column 403 includes a hollow upright 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 on the top of the vertical plate 102, the sliding support 4032 is slidably installed in the hollow upright 4031, and the second spring 4033 is fixedly installed between the hollow upright 4031 and the sliding support 4032, by utilizing the elastic sliding connection relationship between the hollow upright 4031 and the sliding support 4032, the transition plate 401 can be supported, and when the end of the telescopic rod of the first cylinder 6 is pressed down, the hollow upright 4031 moves down to the inner bottom of the sliding support 4032, so that the upper film pressing plate 3 cannot be molded by a plastic mold.

Referring to fig. 1 and 2, a lifting driving assembly 11 is connected between the screw rods 402 in a transmission manner, the lifting driving assembly 11 includes a second motor 1101, a first chain wheel 1102 and a second chain wheel 1103, the first chain wheel 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 chain wheel 1103 is fixedly mounted on an outer ring surface of the screw sleeve 404, the first chain wheel 1102 is in transmission connection with the second chain wheel 1103, when in use, the second motor 1101 is started to drive the two sets of screw rods 402 to rotate through the first chain wheel 1102 and the second chain wheel 1103 in sequence, and during the rotation process, a distance between the upper film pressing plate 3 and the lower mold 2 is changed.

Although the present 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 solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a shedder of plastic mould, include support (1), lower mould (2) and last membrane clamp plate (3), its characterized in that: the lower die (2) is rotatably installed 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 installed 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 the 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 arranged in a hollow groove structure, eight groups of air holes (201) are formed in an annular equidistant array on 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 an annular equidistant array on the upper surface of the sealing plate (7), the blocking blocks (701) are arranged in a matched mode with the air holes (201), six groups of first springs (702) are arranged in an annular equidistant array between the lower die (2) and the sealing plate (7), and two groups of matched electromagnets (703) are arranged in each group of first springs (702);

the air compressor is characterized in that high-pressure air pipes (8) are symmetrically and slidably arranged in the support (1), one ends of the high-pressure air pipes (8) extending into the support (1) are fixedly communicated with nozzles (801), the nozzles (801) and the air holes (201) are arranged in a matched mode, the other ends of the high-pressure air pipes (8) are 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 each high-pressure air pipe (8), and the connecting sleeve (802) is fixedly arranged at the telescopic rod end of each second air cylinder (9);

a receiving disc (12) is slidably mounted at the bottom in the support (1).

2. The apparatus for removing a plastic mold of claim 1, wherein: the support (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 apparatus for removing a plastic mold of claim 2, wherein: the supporting shafts (202) are symmetrically arranged on two sides of the outer wall of the lower die (2), one end of each supporting shaft (202) is fixedly provided with a first rotating shaft (203) and a second rotating shaft (204), and the first rotating shafts (203) and the second rotating shafts (204) are rotatably arranged in the two groups of vertical plates (102) through deep groove ball bearings respectively.

4. The apparatus for removing a plastic mold of claim 3, wherein: one end of the first rotating shaft (203) is in transmission connection with an overturning driving assembly (10), the overturning 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 a side vertical plate (102), the second synchronous pulley (1003) is fixedly installed 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).

5. The apparatus for removing a plastic mold of 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 two groups of vertical plates (102) through the elastic connecting column (403), the surface of each screw rod (402) is in threaded connection with a threaded sleeve (404), each threaded sleeve (404) is rotatably installed in the transition plate (401) through a linear bearing, and the bottom end of each screw rod (402) is rotatably installed in the upper membrane pressing plate (3) through a deep groove ball bearing.

6. The apparatus for removing a plastic mold of claim 5, wherein: the 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 chain wheel (1102) and a second chain wheel (1103), the first chain wheel (1102) is fixedly installed at the output shaft end of the second motor (1101), the second motor (1101) is fixedly installed on the upper surface of the transition plate (401), the second chain wheel (1103) is fixedly installed on the outer ring surface of the threaded sleeve (404), and the first chain wheel (1102) is in transmission connection with the second chain wheel (1103).

7. The apparatus for removing a plastic mold of claim 5, wherein: the elastic connecting column (403) comprises a hollow upright post (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 post (4031), and the second spring (4033) is fixedly installed between the hollow upright post (4031) and the sliding support (4032).

8. The apparatus for removing a plastic mold of claim 2, wherein: the outer diameter of the material receiving disc (12) is larger than the opening size of the lower die (2), and the outer diameter of the material receiving disc (12) is not larger than the vertical distance between the two groups of vertical plates (102).

9. The apparatus for removing a plastic mold of claim 2, wherein: fixed surface installs a set of linear guide (13) and a set of electronic slip table (14) on bottom plate (101), fixed mounting has third spring (15) on the movable block of linear guide (13) and electronic slip table (14), take-up (12) fixed mounting is in third spring (15) top.