TWM625968U - Vacuum feeding device and injection molding machine including the same - Google Patents

Abstract

This creation provides a vacuum feeding device, which is suitable for an injection molding machine. The vacuum feeding device includes an air extraction module and a feeding module. Wherein, the air extraction module includes a first cavity, one side of the first cavity is provided with a communication port, and the communication port is provided with a sieving element, and the other side of the first cavity is provided with an exhaust port, and the exhaust port is provided with an exhaust port. The port is provided with an air extraction unit, and one end of the first cavity is connected to the feeding port of the injection molding machine. Moreover, the feeding module is connected to the communication port of the air extraction module. With the above configuration, when the rubber material enters the first cavity through the sieving element, it will form a thin strip, so that the bubbles inside the rubber material are closer to the surface of the rubber material, and the air extraction unit makes the first cavity in a near-vacuum state. , and then the bubbles on the surface of the rubber compound are broken, thereby effectively removing the air in the rubber compound, thereby improving the quality of the finished product.

Description

Vacuum feeding device and injection molding machine including the same

The present invention relates to a vacuum feeding device, and particularly to a vacuum feeding device and an injection molding machine including the same.

A conventional injection molding machine generally includes a machine body, a feed pipe provided on the machine body, a feed port provided on the feed pipe, and a screw provided in the feed pipe. The screw can rotate around its own axis, and convey the rubber material along the axis direction, while raising the temperature of the rubber material to melt it.

However, since the rubber material may contain air or absorb moisture from the environment, the melting process of the rubber material will cause the water to evaporate and turn into water vapor. If air or water vapor is injected into the mold with the rubber material, the interior of the finished product will Therefore, it will contain pores, which will affect the quality of the finished product. Therefore, before pouring the rubber material into the feeding port, the rubber material is usually rolled repeatedly by means of a mixing device, so as to discharge the internal air. During the rolling process, the rubber material gradually heats up, so that the internal moisture can gradually increase. It is converted into water vapor and discharged with the air, and then the rubber material is poured into the feeding port for use. However, the above steps not only increase the equipment cost, but also the steps in the manufacturing process are relatively complicated.

Therefore, how to design a vacuum feeding device for an injection molding machine to effectively remove the air and moisture in the rubber material, so as to solve the technical problems of the prior art, is an important subject studied by the creator of this creation.

In view of this, the creator has accumulated many years of research and practical experience in related fields to create a vacuum feeding device and an injection molding machine including the same to improve the problems described in the prior art.

In order to solve the above-mentioned problems in the prior art, the present invention provides a vacuum feeding device, which is suitable for an injection molding machine. The vacuum feeding device includes an air extraction module and a feeding module. Wherein, the air extraction module includes a first cavity, one side of the first cavity is provided with a communication port, and the communication port is provided with a sieving element, and the other side of the first cavity is provided with an exhaust port, and the exhaust port is provided with an exhaust port. The port is provided with an air extraction unit, and one end of the first cavity is connected to the feeding port of the injection molding machine. In addition, the feed module is connected to the communication port.

Preferably, a first pushing unit is provided at the other end of the first cavity relative to the feeding port, and the first pushing unit includes a closed piston or a screw.

Preferably, the air extraction module includes a first fixing element and a second fixing element, the first fixing element is fixedly connected with the first cavity to clamp the screening element, and the second fixing element is detachably arranged on the feeding mold. between the group and the first fixing element, wherein the second fixing element has a first abutting surface, a second abutting surface and a third abutting surface, the first abutting surface and the third abutting surface are arranged opposite to each other, and the second The abutting surface is arranged between the first abutting surface and the third abutting surface, the first abutting surface abuts the feeding module, the second abutting surface abuts the screening element, and the third abutting surface abuts by the first fixing element.

Preferably, the sieving element is a sieve plate with a plurality of holes.

Preferably, the feeding module includes a second cavity, one side of the second cavity is provided with a feeding port, and one end of the second cavity is provided with a second pushing unit, and the second pushing unit includes a closed piston. or screw.

Preferably, the first cavity is provided with a viewing window opening, and the viewing window opening is provided with a viewing window.

In order to achieve the above object, the present invention further provides an injection molding machine, which includes the above-mentioned vacuum feeding device and a feeding module. Among them, the feeding module includes a third cavity, the third cavity One side of the body is provided with a feeding port communicating with the air extraction module, and one end of the third cavity is provided with a third pushing unit.

Preferably, the third pushing unit includes a closed piston or a screw.

To sum up, after the rubber material is put into the feeding module from the feeding port, the rubber material will enter the air extraction module through the sieving element through the pushing and extrusion of the second pushing unit, so that the rubber material will pass through the air extraction module. The plurality of holes on the sieving element are formed into thin strips, thereby increasing the surface area of the rubber material, and allowing air bubbles or moisture inside the rubber material to be closer to the surface of the rubber material. In addition, the air extraction unit continuously extracts the gas in the first cavity from the exhaust port, so that the first cavity is in a near-vacuum state. When the rubber material enters the first cavity through the sieving element, due to the The low air pressure will cause the bubbles close to the surface of the rubber material to burst and the air and moisture contained in them to escape, and the low pressure environment in the first cavity also reduces the boiling point of water, so that the moisture in the rubber material is converted into water vapor, And water vapor is extracted with the air through the exhaust port. With the above configuration, the vacuum feeding device of the present invention can effectively remove the air and moisture in the rubber material before sending the rubber material to the injection molding machine for injection molding, thereby improving the quality of the finished product of the subsequent injection molding machine.

In addition, the sieving element of the vacuum feeding device of this creation is a detachable sieve plate. The operator can replace the sieve plate with different opening designs according to the different physical properties of different types of rubber materials, so as to achieve the best degassing. effect and feed rate. In addition, the exhaust module can be provided with a transparent window to facilitate the operator to directly observe the feeding situation of the rubber material, so as to facilitate the adjustment of the degassing effect and the feeding rate.

1: Vacuum feeding device

10: Air extraction module

11: The first cavity

111: Connecting port

12: Sieve element

112: exhaust port

113: Window opening

13: The first pushing unit

131: The first push element

132: First drive element

14: The first fixing element

15: Second fixing element

16: Windows

20: Feeding module

21: Second cavity

211: Feeding port

212: Connection channel

22: The second pushing unit

221: Second push element

222: Second drive element

30: Feeding module

31: The third cavity

311: Feeding port

32: The third pusher unit

321: The third pusher element

322: Third drive element

In order to illustrate the technical solution of the present creation more clearly, the drawings required in the embodiments will be briefly introduced below; Figure 1 is a schematic diagram of the vacuum feeding device according to the first embodiment of the present invention; Figure 2 is a schematic diagram of the vacuum feeding device according to the second embodiment of the present invention; Figure 3 is a part of part A in Figure 2 Enlarged view; Fig. 4 is a schematic diagram of the feeding module of the injection molding machine connected to the vacuum feeding device according to the second embodiment of the present invention; and Fig. 5 is the vacuum feeding device according to the third embodiment of the present invention. Schematic.

In order to help the examiners to understand the technical features, content and advantages of this creation and the effects that can be achieved, this creation is hereby combined with the accompanying drawings, and is described in detail as follows in the form of embodiment. The subject matter is only for illustration and auxiliary description, and may not necessarily be the real proportion and precise configuration after the implementation of this creation. Therefore, the proportion and configuration relationship of the attached drawings should not be interpreted or limited to the scope of rights of this creation in actual implementation. Together first to describe.

It will be understood that although the terms "first", "second", etc. may be used in the present compositions to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections You should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer and/or section from another element, component, region, layer and/or section. Thus, "first element", "first feature", "first region", "first layer" and/or "first portion" discussed below may be referred to as "second element", "second feature" , "Second Area", "Second Floor" and/or "Second Part" without departing from the spirit and teachings of this creation.

Additionally, the terms "comprising" and/or "comprising" refer to the presence of stated features, regions, integers, steps, operations, elements and/or components, but do not exclude one or more other features, regions, integers, steps, operations , elements, components and/or the presence or addition of combinations thereof.

Unless otherwise defined, all terms (including technical and scientific terms) used in this creation have the same meaning as commonly understood by one of ordinary skill in the art to which this creation belongs. It is to be understood that terms such as those defined in commonly used dictionaries should be construed as having definitions consistent with their meanings in the context of the related art and the present creation, and are not to be construed as idealized or overly formal meaning, unless expressly defined as such herein.

The present creation will be further described in detail below in conjunction with the accompanying drawings. These drawings are all simplified schematic diagrams, and only illustrate the basic structure of the present invention in a schematic manner, and therefore are not intended to limit the present invention.

Please refer to FIG. 1. FIG. 1 is a schematic diagram of a vacuum feeding device according to a first embodiment of the present invention.

As shown in FIG. 1 , the first embodiment of the present invention provides a vacuum feeding device 1 , which is suitable for an injection molding machine. The vacuum feeding device 1 includes an air extraction module 10 and a feeding module 20 . The air extraction module 10 includes a first cavity 11 , one side of the first cavity 11 is provided with a communication port 111 , and the communication port 111 is provided with a screening element 12 , and the other side of the first cavity 11 is provided with a communication port 111 . The exhaust port 112 is provided with a suction unit (not shown in the figure), and one end of the first cavity 11 is connected to the feeding port 311 of the feeding module 30 of the injection molding machine. The other end of the cavity 11 is provided with a first pushing unit 13 . In addition, the feeding module 20 is connected to the communication port 111 of the air extraction module 10 through a connecting channel 212 , and includes a second cavity 21 , a feeding port 211 is disposed on one side of the second cavity 21 , and One end of the two cavities 21 is provided with a second pushing unit 22 . In addition, the feeding module 30 of the injection molding machine includes a third cavity 31 . The third cavity 31 is provided with a feeding port 311 for connecting with the air extraction module 10 , and one end of the third cavity 31 is provided with a third cavity 31 . Pushing unit 32.

In addition, the air extraction module 10 of the vacuum feeding device 1 of the present invention is detachable. When the air extraction function is not required, the air extraction module 10 can be removed, and a connecting piece, such as a connecting pipe or The connecting block is used to connect the connecting channel 212 of the feeding module 20 of the vacuum feeding device 1 and the injection molding The feeding port 311 of the feeding module 30 of the machine can feed the injection molding machine. Moreover, the vacuum feeding device 1 of the present invention can be directly installed on the old injection molding machine for use.

Further, the sieve element 12 disposed at the communication port 111 of the air extraction module 10 is a sieve plate with a plurality of holes. Since the vacuum feeding device 1 of the present invention can input different kinds of rubber materials, and different kinds of rubber materials have different physical properties, the screening elements 12 with the same hole design may reduce the feeding rate of the rubber materials, or Makes the degassing effect unsatisfactory. Therefore, the operator can remove the air extraction module 10 and replace the sieve plate with different hole designs, such as the size, number, shape and arrangement of holes, according to different types of plastic masterbatches used. sieve element 12, and reinstall the air extraction module 10 after the replacement of the sieve element 12, so as to achieve the best degassing effect and feeding rate.

In this embodiment, the first pushing unit 13 includes a first pushing element 131 and a first driving element 132 , wherein the first pushing element 131 is a closed piston and is used to drive the closed piston to act as a first driving element 132 is a hydraulic cylinder. In addition, the second pushing unit 22 includes a second pushing element 221 and a second driving element 222, wherein the second pushing element 221 is also a closed piston, and the second driving element 222 for driving the closed piston to act is also a Hydraulic Cylinder. In addition, the third stacking unit 32 includes a third pushing element 321 and a third driving element 322, wherein the third pushing element 321 is a screw, and the third driving element 322 for driving the screw is an electric motor, but This creation is not limited to this. In other embodiments, the first pushing element, the second pushing element and the third pushing element can choose to use a closed piston or a screw according to the needs of the user, and can choose to use other types of power sources, such as pneumatic cylinders and Air motors, etc., are used as the first driving element, the second driving element and the third driving element. In addition, in other embodiments, the air extraction module may not be provided with the first pushing unit, and the rubber material may be conveyed only through the action of the second pushing unit of the feeding module.

Further, the operator can adjust the output power of the first driving element 132 and the second driving element 222 during the feeding process, and then adjust the first pushing element 131 and the second pushing element 221 The conveying speed is high, so as to avoid the accumulation of too little or too much rubber material in the first cavity 11 , which will cause the blockage of the exhaust port 112 of the air extraction module 10 .

With the above configuration, the operator can input the rubber material from the feeding port 211 of the feeding module 20, and through the pushing and extrusion of the second pushing unit 22, the rubber material can enter the air extraction module through the sieving element 12. 10. When the rubber material passes through the plurality of holes on the sieve element 12, it will be formed into thin strips, thereby increasing the surface area of the rubber material, and allowing the air bubbles or moisture inside the rubber material to be closer to the surface of the rubber material. In addition, since the air extraction unit (not shown) continuously extracts the gas in the first cavity 11 from the exhaust port 112 , the first cavity 11 is in a near-vacuum state. When the rubber material passes through the sieving element 12 , the When entering the first cavity 11, due to the low air pressure in the first cavity 11, the air bubbles close to the surface of the rubber material will burst and the air contained in the rubber material will escape, and the low pressure environment in the first cavity 11 will The boiling point of water is also lowered, so that the moisture in the rubber material is converted into water vapor, and the water vapor is drawn out through the exhaust port 112 with the air. Therefore, the vacuum feeding device 1 of the present invention can effectively reduce the air and moisture in the rubber material before feeding the rubber material to the feeding port of the feeding module 30 of the injection molding machine, thereby improving the subsequent injection molding machine. The quality of the finished product.

Please refer to Fig. 2 to Fig. 4, Fig. 2 is a schematic diagram of a vacuum feeding device according to a second embodiment of the present invention; Fig. 3 is a partial enlarged view of part A in Fig. 2; and Fig. 4 is a A schematic diagram of the feeding module of the injection molding machine connected to the vacuum feeding device according to the second embodiment of the present invention.

As shown in FIG. 2 and FIG. 4 , the second embodiment of the present invention provides a vacuum feeding device 1 , which is suitable for an injection molding machine. The vacuum feeding device 1 also includes an air extraction module 10 and a feeding device. Module 20. The air extraction module 10 includes a first cavity 11 , one side of the first cavity 11 is provided with a communication port 111 , and the communication port 111 is provided with a screening element 12 , and the other side of the first cavity 11 is provided with a communication port 111 . The exhaust port 112 is provided with an air extraction unit (not shown in the figure), and one end of the first cavity 11 is connected to the feeding port 311 of the feeding module 30 of the injection molding machine. In addition, the feeding module 20 is connected to the communication port 111 of the air extraction module 10 through a connecting channel 212 , and the feeding module 20 includes a second cavity 21 , one side of the second cavity 21 . A feeding port 211 is provided, and one end of the second cavity 21 is provided with a second pushing unit 22 . In addition, the feeding module 30 of the injection molding machine includes a third cavity 31 . The third cavity 31 is provided with a feeding port 311 for connecting with the air extraction module 10 , and one end of the first cavity 11 is provided with a third cavity 31 . Pushing unit 32.

In this embodiment, the second pushing unit 22 includes a second pushing element 221 and a second driving element 222, wherein the second pushing element 221 is a closed piston and is used to drive the closed piston to act as a second driving element 222 is a hydraulic cylinder. In addition, the third pushing unit 32 includes a third pushing element 321 and a third driving element 322, wherein the third pushing element 321 is a screw, and the third driving element 322 for driving the screw is an electric motor, but This creation is not limited to this. In other embodiments, the second pushing element 221 and the third pushing element 321 can be closed pistons or screws, and other types of power sources, such as pneumatic cylinders and air motors, can be used as the second driving elements 222 and 321. The third drive element 322 . It is worth mentioning that, in this embodiment, the pumping module 10 is not provided with a pushing unit, so the vacuum feeding device 1 of the present invention only passes the action of the second pushing unit 22 of the feeding module 20 to Conveying rubber material.

It is worth mentioning that, as shown in FIG. 3 , in this embodiment, the air extraction module 10 includes a connection channel 212 disposed between the connection channel 212 of the feeding module 20 and the communication port 111 of the air extraction module 10 . The first fixing element 14 and the second fixing element 15 . The first fixing element 14 is fixedly connected with the first cavity 11 so that the first fixing element 14 and the inner wall of the first cavity 11 are respectively clamped on both sides of the sieving element 12, and the second fixing element 15 It is detachably disposed between the connecting channel 212 of the feeding module 20 and the first fixing element 14 . Specifically, the second fixing element 15 has a first abutting surface, a second abutting surface and a third abutting surface, the first abutting surface and the third abutting surface are disposed opposite to each other, and the second abutting surface is disposed on the between the first abutting surface and the third abutting surface. In addition, the first abutting surface of the second fixing element 15 abuts against the opening periphery of the connecting channel 212 of the feeding module 20 , the second abutting surface of the second abutting surface abuts the screening element 12 , and the third abutting surface of the second abutting surface against the first fixing element 14 .

Since the vacuum feeding device 1 of the present invention can input rubber materials with different physical properties, only using the sieving element 12 with the same hole design may reduce the feeding rate of the rubber material. low, or cause unsatisfactory degassing effect. Therefore, it is necessary to replace the sieve plate with different hole design as the sieve element 12 according to the input rubber material, so as to achieve the best degassing effect and feeding rate.

With the above configuration, when the sieve element 12 with different hole designs needs to be replaced, compared with the first embodiment, the entire air extraction module 10 needs to be removed to replace the sieve element 12, and after the replacement is completed. Reinstalling the air extraction module 10, in this embodiment, only the second fixing element 15 needs to be removed to remove the sieve element 12, and the sieve plate with a different hole design can be replaced as the sieve element 12, and After the replacement of the sieve element 12 is completed, the second fixing element 15 only needs to be installed in the position for continued use, which is easy to operate and can greatly save the operation time of the operator.

In addition, the first cavity 11 of the air extraction module 10 of the vacuum feeding device 1 of the present invention is provided with a window opening 113 , and the window opening 113 is provided with a transparent window 16 . With the setting of the viewing window 16, the operator can immediately observe the feeding situation of the rubber material in the first cavity 11, so as to facilitate the adjustment of the degassing effect and the feeding rate.

Please refer to FIG. 5 , which is a schematic diagram of a vacuum feeding device according to a third embodiment of the present invention.

As shown in FIG. 5 , the third embodiment of the present invention further provides a vacuum feeding device 1 , which is suitable for an injection molding machine. The vacuum feeding device 1 also includes an air extraction module 10 and a feeding module 20 , and the air extraction module 10 is connected to the feeding port 311 of the feeding module 30 of the injection molding machine. In this embodiment, the air extraction module 10 and the feeding module 30 of the injection molding machine connected to the air extraction module 10 have the same structures as those described in the first embodiment, and are not repeated here.

Since the vacuum feeding device 1 of the present invention can input rubber materials with different physical properties, when a rubber material with higher hardness or viscosity is used, the pressure required to push the rubber material through the holes of the sieving element 12 is larger. Therefore, in this embodiment, the second pushing unit 22 of the feeding module 20 includes a second pushing element 221 and a second driving element 222, and the screw is used as the second pushing element 221 and is used for driving The second drive element 222 actuated by the screw is an electric motor. With the above configuration, The second pushing unit 22 can provide sufficient pressure to push the rubber material through the holes of the sieving element 12 , so that the rubber material can be smoothly transported to the air extraction module 10 and the feeding module 30 of the injection molding machine.

To sum up, after the rubber material is put into the feeding module from the feeding port, the rubber material will enter the air extraction module through the sieving element through the pushing and extrusion of the second pushing unit, so that the rubber material will pass through the air extraction module. The plurality of holes on the sieving element are formed into thin strips, thereby increasing the surface area of the rubber material, and allowing air bubbles or moisture inside the rubber material to be closer to the surface of the rubber material. In addition, because the gas extraction unit continuously extracts the gas in the first cavity from the exhaust port, so that the first cavity is in a near-vacuum state, when the rubber material enters the first cavity through the sieving element, the first cavity The low pressure of the rubber material will cause the bubbles close to the surface of the rubber material to burst and the air contained in it to escape, and the low pressure environment in the first cavity also reduces the boiling point of water, so that the moisture in the rubber material is converted into water vapor, and Water vapor is extracted with the air through the exhaust port. With the above configuration, the vacuum feeding device of the present invention can effectively remove the air and moisture in the rubber material before sending the rubber material to the injection molding machine for injection molding, thereby improving the quality of the finished product of the subsequent injection molding machine.

In addition, the sieving element of the vacuum feeding device of this creation is a detachable sieve plate. The operator can replace the sieve plate with different opening designs according to the different physical properties of different types of rubber materials, so as to achieve the best degassing. effect and feed rate. In addition, the sieving element can be fixed through the first fixing element and the second fixing element which is easy to disassemble. When the sieving element needs to be replaced, only the second fixing element needs to be removed for replacement, and after the replacement is completed, only The second fixing element can be re-installed to be positioned for continued use. The operation is simple and the operation time of the operator can be greatly reduced. In addition, the exhaust module of the vacuum feeding device of the present creation can be provided with a transparent window to facilitate the operator to directly observe the feeding situation of the rubber material, so as to facilitate the operator to adjust the degassing effect and the feeding rate.

The present invention has been described with reference to the exemplary embodiments. Those skilled in the art can understand that the present invention is not deviated from the concept and scope of the present invention as defined by the scope of the patent application. Under such circumstance, various changes in form and details and equivalent arrangements can be made, so the protection scope of this creation should be based on the principle defined by the scope of the appended patent application.

1: Vacuum feeding device

10: Air extraction module

11: The first cavity

11: Connecting port

12: Sieve element

112: exhaust port

13: The first pushing unit

131: The first push element

Claims (8)

A vacuum feeding device is suitable for an injection molding machine. The vacuum feeding device includes: an air extraction module, including a first cavity, one side of the first cavity is provided with a communication port, and the The communication port is provided with a sieve element, the other side of the first cavity is provided with an exhaust port, and the exhaust port is provided with an air extraction unit, wherein one end of the first cavity is connected to an inlet of the injection molding machine. a material port; and a material supply module, which is connected to the communication port. The vacuum feeding device according to claim 1, wherein the other end of the first cavity relative to the other end connected to the feeding port is provided with a first pushing unit, and the first pushing unit includes a closed piston or a screw. The vacuum feeding device according to claim 1, wherein the air extraction module comprises a first fixing element and a second fixing element, the first fixing element is fixedly connected with the first cavity to hold the sieve element, and the second fixing element is detachably disposed between the feeding module and the first fixing element, wherein the second fixing element has a first abutting surface, a second abutting surface and a first Three abutting surfaces, the first abutting surface and the third abutting surface are disposed opposite to each other, and the second abutting surface is disposed between the first abutting surface and the third abutting surface, the first abutting surface The abutting surface abuts the feeding module, the second abutting surface abuts the screening element, and the third abutting surface abuts the first fixing element. The vacuum feeding device according to claim 1, wherein the sieving element is a sieve plate with a plurality of holes. The vacuum feeding device according to claim 1, wherein the feeding module comprises a second cavity, a feeding port is provided on one side of the second cavity, and the second cavity is One end is provided with a second pushing unit, and the second pushing unit includes a closed piston or a screw. The vacuum feeding device according to claim 1, wherein the first cavity is provided with a viewing window opening, and a viewing window is provided on the viewing window opening. An injection molding machine, comprising: the vacuum feeding device according to any one of claim 1 to claim 6; and a feeding module, comprising a third cavity, a The side is provided with a feeding port which communicates with an air extraction module, and one end of the third cavity is provided with a third pushing unit. The injection molding machine according to claim 7, wherein the third pushing unit comprises a closed piston or a screw.

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