CN220499857U

CN220499857U - Die spotting machine

Info

Publication number: CN220499857U
Application number: CN202322203660.7U
Authority: CN
Inventors: 纪俊维
Original assignee: Juqiang Guangzhou Machinery Co ltd
Current assignee: Juqiang Guangzhou Machinery Co ltd
Priority date: 2023-08-15
Filing date: 2023-08-15
Publication date: 2024-02-20
Anticipated expiration: 2033-08-15

Abstract

The utility model discloses a die spotting machine which comprises a base, a lower pressing plate and an upper pressing plate, wherein the upper pressing plate is in sliding fit with the base, and the upper pressing plate is connected with the base through a die spotting driving assembly on a crank connecting rod; the lower pressing plate is positioned below the upper pressing plate. The die spotting machine provided by the utility model has the advantages that the die spotting precision is high, the pressure of the upper pressing plate on the upper die is uniform, the die spotting stability is improved, the service life is long, and the maintenance cost is low.

Description

Die spotting machine

Technical Field

The utility model relates to the field of mold closing and injection molding of rubber soles, in particular to a mold closing machine.

Background

The rubber or plastic sole is processed and molded, after the upper die and the lower die of the die are clamped, liquid materials are injected into the inner cavity of the die, and meanwhile, the clamping force of the die is kept, so that the upper die and the lower die are prevented from being stretched due to the lifting of the inner pressure of the die. After the materials are cooled and solidified, the upper die and the lower die are opened, and the injection molded sole can be obtained. The traditional die spotting machine is directly connected with a pressing plate through a hydraulic rod of a hydraulic cylinder, and the pressing plate is used for providing die spotting force for a die. However, when the hydraulic cylinder is pressurized, the hydraulic cylinder slightly contracts, and the precision is affected; the single hydraulic cylinder can bear smaller pressure, has short service life and high replacement cost, and has small application point range, so that the problem that the clamping force of the pressing plate acting on the die is easy to be uneven is solved, and the clamping stability is reduced.

Disclosure of Invention

The utility model aims to provide a die spotting machine which has high die spotting precision, uniform pressure on an upper die at each position of an upper pressing plate, long service life and low maintenance cost, and improves the die spotting stability.

In order to achieve the above purpose, the utility model provides a die spotting machine, which comprises a base, a lower pressing plate and an upper pressing plate, wherein the upper pressing plate is in sliding fit with the base, and the upper pressing plate is connected with the base through a crank connecting rod upper die spotting driving assembly; the lower pressing plate is positioned below the upper pressing plate.

As a further improvement of the utility model, the base comprises an upper base, a first guide rail and a lower base which are connected in sequence; the upper pressing plate is in sliding connection with the first guide rail; the die assembly driving assembly on the crank connecting rod comprises a first hydraulic cylinder arranged on the upper base, and a hydraulic rod of the first hydraulic cylinder is connected with a lifting block; the die assembly driving assembly on the crank connecting rod further comprises a first connecting rod, a crank and a second connecting rod; the lower end of the first connecting rod is hinged with the upper pressing plate, the upper end of the first connecting rod is hinged with the crank, the crank is also respectively hinged with the upper base and one end of the second connecting rod, and the other end of the second connecting rod is hinged with the edge of the lifting block.

As a further improvement of the utility model, the upper die assembly driving assembly of the crank connecting rod further comprises a second guide rail, the second guide rail is respectively in sliding fit with the upper base and the lifting block, and the second guide rail is connected with the upper pressing plate.

As a further improvement of the utility model, the number of the first guide rails is at least two, the first guide rails comprise threaded sections, and an upper pressing plate height adjusting mechanism is arranged between the threaded sections of the first guide rails and the upper base.

As a further improvement of the utility model, the height adjusting mechanism of the upper pressing plate comprises a motor, a chain and at least two first chain wheels, wherein the motor is arranged on the upper base, the middle part of each first chain wheel is in threaded fit with the thread section, and the second chain wheel and the first chain wheel at the output end of the motor are both matched with the chain; the first sprocket is rotatably connected with the upper base.

As a further improvement of the utility model, a lower heating plate is connected above the lower pressing plate through a lower heat insulation plate, and an upper heating plate is connected below the upper pressing plate through an upper heat insulation plate; the lower heating plate and the upper heating plate are internally provided with an electric heating structure.

As a further improvement of the utility model, the utility model also comprises an exhaust connecting pipe connected with the upper pressing plate, one end of the exhaust connecting pipe is communicated with the vacuumizing hole of the upper heating plate, and the vacuumizing hole of the upper heating plate corresponds to a vacuumizing channel communicated with the inner cavity of the die.

Advantageous effects

Compared with the prior art, the die spotting machine has the advantages that:

1. the upper pressing plate is driven to move by the die closing driving assembly on the crank connecting rod which is linked with the first hydraulic cylinder, the connecting rods, the crank and the lifting block, so that the traditional mode of directly driving the upper pressing plate through the hydraulic cylinder is replaced. When the die is closed, the first hydraulic cylinder is pressurized, the crank is in an unbending state, and all the connecting parts are in hard connection, so that the first hydraulic cylinder can be prevented from slightly contracting, the die closing precision is not influenced by other factors, and the structural precision is ensured during part processing. In addition, the first connecting rods can be arranged in a plurality of positions and act on the upper pressing plate, so that the pressure on the upper die at each position of the upper pressing plate is more uniform, and the die assembly stability is improved. The crank connecting rod is mainly stressed, even if damaged, the replacement cost is lower, and the first hydraulic cylinder has long service life and low maintenance cost.

2. The second guide rail prevents the lifting block from tilting, and the first guide rail prevents the upper pressing plate from tilting, so that the pressure on the upper die is ensured to be more uniform everywhere.

3. When the molds with different heights are required to be clamped, the motor of the upper pressing plate height adjusting mechanism drives the chain to enable the thread sections of the first guide rails to rotate relative to the upper base so as to adjust the height of the upper base, so that the height of the upper pressing plate is adjusted, and the applicability is wide.

4. The lower heating plate and the upper heating plate are internally provided with an electric heating structure, so that after liquid materials enter the die, the die is heated through the upper heating plate and the lower heating plate, the materials are prevented from being solidified prematurely, the fluidity of the materials is ensured, and the materials can be filled in all parts of the inner cavity of the die.

5. The exhaust connecting pipe of the upper pressing plate is connected with the air pump, and the vacuum pumping channel can be used for vacuumizing the inner cavity of the die, so that the flow speed of materials in the inner cavity of the die is improved, and the materials can fill all parts of the inner cavity of the die.

The utility model will become more apparent from the following description taken in conjunction with the accompanying drawings which illustrate embodiments of the utility model.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a perspective view of a mold clamping machine;

FIG. 2 is a front view of the mold clamping machine;

FIG. 3 is a rear view of the clamping machine;

FIG. 4 is an enlarged view at A of FIG. 1;

FIG. 5 is one of the state diagrams of the clamp drive assembly on the crank link;

FIG. 6 is a second state diagram of the clamp drive assembly on the crank link.

Detailed Description

Embodiments of the present utility model will now be described with reference to the accompanying drawings.

Examples

The embodiment of the utility model is shown in fig. 1 to 6, and the die spotting machine comprises a base 1, a lower pressing plate 6 and an upper pressing plate 2, wherein the upper pressing plate 2 is in sliding fit with the base 1, and the upper pressing plate 2 is connected with the base 1 through a crank connecting rod upper die spotting driving assembly 3. The lower platen 6 is located below the upper platen 2. A lower die assembly driving device 7 is connected between the lower pressing plate 6 and the base 1. The lower mold closing driving device 7 is a third hydraulic cylinder.

The base 1 includes an upper base 12, a first guide rail 13, and a lower base 11, which are sequentially connected. The upper platen 2 is slidably connected to the first rail 13. The crank-link upper mold clamping drive assembly 3 includes a first hydraulic cylinder 31 mounted on the upper base 12, and a lifting block 32 is connected to a hydraulic rod of the first hydraulic cylinder 31. The crank-link upper clamp drive assembly 3 further includes a first link 34, a crank 33, and a second link 35. The lower end of the first connecting rod 34 is hinged with the upper pressing plate 2, the upper end of the first connecting rod 34 is hinged with the crank 33, the crank 33 is also respectively hinged with the upper base 12 and one end of the second connecting rod 35, and the other end of the second connecting rod 35 is hinged with the edge of the lifting block 32.

The crank connecting rod upper die assembly driving assembly 3 further comprises a second guide rail 36, the second guide rail 36 is respectively in sliding fit with the upper base 12 and the lifting block 32, and the second guide rail 36 is connected with the upper pressing plate 2.

In this embodiment, the number of lifting blocks 32 is one, and the first connecting rod 34, the crank 33 and the second connecting rod 35 are two groups and symmetrically arranged on the left and right sides of the lifting blocks 32, so that the pressing force applied to the upper pressing plate 2 is more uniform.

The number of the first guide rails 13 is at least two, the first guide rails 13 comprise threaded sections 131, and an upper pressing plate height adjusting mechanism 8 is arranged between the threaded sections 131 of the first guide rails 13 and the upper base 12. In this embodiment, the number of the first guide rails 13 is four.

The upper pressing plate height adjusting mechanism 8 comprises a motor 82, a chain and four first chain wheels 81, the first chain wheels 81 are in one-to-one correspondence with the first guide rails 13, the motor 82 is arranged on the upper base 12, the middle part of each first chain wheel 81 is in threaded fit with the thread segments 131, and the second chain wheels and the first chain wheels 81 at the output end of the motor 82 are matched with the chain. The first sprocket 81 is rotatably coupled to the upper base 12. When the molds with different heights are required to be clamped, the motor 81 of the upper pressing plate height adjusting mechanism 8 drives a chain (not shown in the drawing) to rotate the first sprocket 81 relative to the thread segment 131 to adjust the height of the upper base 12 due to the action of the threads so as to adjust the height of the upper pressing plate 2.

The upper part of the lower pressing plate 6 is connected with a lower heating plate through a lower heat insulation plate, and the lower part of the upper pressing plate 2 is connected with an upper heating plate through an upper heat insulation plate. The lower heating plate and the upper heating plate are internally provided with an electric heating structure. The electrothermal structure can be an electrothermal tube. After the liquid material enters the die, the lower heating plate and the upper heating plate heat the die, so that the material entering the die is prevented from being solidified prematurely, the fluidity of the material is ensured, and the material can fill all parts of the inner cavity of the die.

The die spotting machine further comprises an exhaust connecting pipe 9 connected with the upper pressing plate 2, one end of the exhaust connecting pipe 9 is communicated with a vacuumizing hole of the upper heating plate, and the vacuumizing hole of the upper heating plate is contacted with a vacuumizing channel communicated with the inner cavity of the die. A vacuum-pumping channel is arranged between the top surface of the upper die and the inner cavity of the upper die (not shown in the figure), and the vacuum-pumping channel of the die is communicated with the vacuum-pumping hole of the upper heating plate. The exhaust connecting pipe 9 of the upper pressing plate 2 is connected with an air pump (not shown in the figure), and the vacuum can be pumped into the inner cavity of the die through the vacuum pumping channel, so that the flow speed of the material in the inner cavity of the die is improved, and the material can fill all parts of the inner cavity of the die. Simultaneously, the air in the material can be discharged, and the product is prevented from having a cavity.

When the upper and lower molds of the mold are placed between the upper heating plate of the upper platen 2 and the lower heating plate of the lower platen 6, the upper heating plate is pressed above the upper mold, and the lower heating plate is supported on the bottom surface of the lower mold. The liquid material is injected into the cavity of the mold by a material injection gun (not shown) through a material injection channel arranged on one side wall of the mold. In the process of injecting liquid materials into the inner cavity of the die by the injection gun, the first hydraulic cylinder 31 of the die assembly driving assembly 3 on the crank connecting rod drives the lifting block 32 to move downwards, and the lifting block 32 drives the upper pressing plate 2 to move downwards relative to the upper base 12 through the second connecting rod 35, the crank 33 and the first connecting rod 34, so that the upper die is pressed downwards. In order to increase the mold clamping force, the upper mold and the lower mold are prevented from being opened by the internal materials, and the third hydraulic cylinder of the lower mold clamping driving device 7 drives the lower pressing plate 6 to jack up the lower mold.

The utility model has been described in connection with the preferred embodiments, but the utility model is not limited to the embodiments disclosed above, but it is intended to cover various modifications, equivalent combinations according to the essence of the utility model.

Claims

1. The die spotting machine comprises a base (1), a lower pressing plate (6) and an upper pressing plate (2), and is characterized in that the upper pressing plate (2) is in sliding fit with the base (1), and the upper pressing plate (2) is connected with the base (1) through a crank connecting rod upper die spotting driving assembly (3); the lower pressing plate (6) is positioned below the upper pressing plate (2); the base (1) comprises an upper base (12), a first guide rail (13) and a lower base (11) which are sequentially connected; the upper pressing plate (2) is in sliding connection with the first guide rail (13); the upper die assembly driving assembly (3) of the crank connecting rod comprises a first hydraulic cylinder (31) arranged on the upper base (12), and a hydraulic rod of the first hydraulic cylinder (31) is connected with a lifting block (32); the upper die assembly driving assembly (3) of the crank connecting rod also comprises a first connecting rod (34), a crank (33) and a second connecting rod (35); the lower end of the first connecting rod (34) is hinged with the upper pressing plate (2), the upper end of the first connecting rod (34) is hinged with the crank (33), the crank (33) is also respectively hinged with the upper base (12) and one end of the second connecting rod (35), and the other end of the second connecting rod (35) is hinged with the edge of the lifting block (32).

2. The die spotting machine according to claim 1, wherein the crank-link upper die spotting driving assembly (3) further comprises a second guide rail (36), the second guide rail (36) is slidably matched with the upper base (12) and the lifting block (32), and the second guide rail (36) is connected with the upper pressing plate (2).

3. The die spotting machine according to claim 1, wherein the number of the first guide rails (13) is at least two, the first guide rails (13) comprise thread segments (131), and an upper platen height adjusting mechanism (8) is provided between the thread segments (131) of the first guide rails (13) and the upper base (12).

4. A machine according to claim 3, characterized in that the upper platen height adjustment mechanism (8) comprises a motor (82), a chain and at least two first chain wheels (81), the motor (82) is mounted on the upper base (12), the middle part of the first chain wheels (81) is in threaded fit with the thread segments (131), and the second chain wheels and the first chain wheels (81) at the output end of the motor (82) are both in threaded fit with the chain; the first sprocket (81) is rotatably connected to the upper base (12).

5. The die spotting machine according to claim 1, characterized in that a lower heating plate is connected above the lower pressing plate (6) through a lower heat insulation plate, and an upper heating plate is connected below the upper pressing plate (2) through an upper heat insulation plate; the lower heating plate and the upper heating plate are internally provided with an electric heating structure.

6. The die spotting machine according to claim 5, further comprising an exhaust connection pipe (9) connected to the upper platen (2), wherein one end of the exhaust connection pipe (9) is communicated with a vacuum-pumping hole of the upper heating plate, and the vacuum-pumping hole of the upper heating plate corresponds to a vacuum-pumping channel communicated with the die cavity.