Integrated vacuum dispensing machine

Abstract

The present invention discloses an integrated vacuum dispensing machine, the weighing mechanism of which includes a base mounted on a workbench, a movable carrier mounted on the upper portion of the base, and a material cup placed on the upper surface of the movable carrier. The two ends of the movable carrier correspond one-to-one with the two end surfaces of the base and are connected by a guide portion and a movable portion, so that the movable carrier can move up and down relative to the base. The movable portion is a protrusion provided at each end of the movable carrier, and the guide portion is a groove provided on each end surface of the base. The protrusions are each embedded in a corresponding groove and can move up and down within the groove. The lower surface of the movable carrier is connected to the bottom plate of the base by at least two second elastic members, and the second elastic members are respectively provided at each end of the movable carrier. The present invention realizes the weight measurement of liquid in a vacuum environment, solving the problem that electronic weighing equipment in a vacuum chamber is difficult to measure stably for a long time.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum cavity sealing, and in particular to an integrated vacuum dispensing machine. Background Art

[0002] With the increasing frequency of product updates and iterations, the importance of stable and efficient manufacturing equipment is self-evident. During the dispensing process, if the fluid in the mixing channel of a dispensing machine is not promptly removed before a reaction occurs, the mixing channel will become clogged or even scrapped. It is also easy for the newly reacted glue to be injected directly into the product without prompt detection, causing unnecessary trouble and loss. Therefore, it is necessary to promptly remove this residual glue.

[0003] With the increasing degree of automation, automatic glue discharge has become an inevitable choice. However, it still faces the following problems: the waste cup has a limited capacity. If it is not replaced in time after it is full, the glue will overflow from the waste cup and flow into the equipment. In severe cases, it may cause damage to equipment components and force the automatic production line to stop. Conventional electronic scales are easily damaged during the repeated rise and fall of air pressure. Summary of the Invention

[0004] The purpose of the present invention is to provide an integrated vacuum dispensing machine, which realizes the weight measurement of liquid in a vacuum environment and solves the problem that electronic weighing equipment in a vacuum chamber is difficult to measure stably for a long time.

[0005] To achieve the above object, the technical solution adopted by the present invention is: an integrated vacuum dispensing machine, comprising a vacuum chamber, a frame, a dispensing valve and a workbench, wherein the vacuum chamber is mounted on the frame, the dispensing valve and the workbench are both located in the vacuum chamber, and the dispensing valve is located directly above the workbench;

[0006] An air extraction port and two air inlet ports are provided on the outer surface of one side of the vacuum chamber body, and the air extraction port and the air inlet ports each have a radially inwardly extending flange portion on the inner wall close to one end of the interior of the vacuum chamber body, a first flange plate is embedded in the air extraction port, and a second flange plate is embedded in the air inlet port, and the end surface of one end of each of the first flange plate and the second flange plate is in surface contact with the end surface of the corresponding flange portion, and the other end of each of the first flange plate and the second flange plate is connected to the piston rod of the corresponding first cylinder and the second cylinder;

[0007] A connecting seat is installed on the air extraction port, one end surface of the connecting seat is connected to the vacuum chamber body, the first cylinder is installed on the other end surface of the connecting seat, the piston rod of the first cylinder is connected to the first flange via a first core shaft, a first through hole connected to the air extraction port is provided on the connecting seat along the direction of the first core shaft, the first core shaft is telescopically arranged in the first through hole, and an air extraction hole connected to the first through hole is further provided on the connecting seat, and the air extraction hole is used to be connected to the vacuum pump;

[0008] A first elastic member is mounted on the first core shaft, one end of the first elastic member close to the first flange contacts the outer flange portion at the end of the first core shaft, and the other end of the first elastic member is extruded and connected to the housing of the first cylinder;

[0009] The outer diameter ratio of the two second flanges respectively embedded in the two air inlets is 5:2-3. When the vacuum chamber body is in a pressure relief state, the second flange with a smaller outer diameter is pulled out from the corresponding air inlet by the second cylinder, and then the second flange with a larger outer diameter is pulled out from the corresponding air inlet.

[0010] The workbench is provided with a weighing mechanism, which includes a base mounted on the workbench, a movable carrier mounted on the upper part of the base, and a material cup placed on the upper surface of the movable carrier. The two ends of the movable carrier correspond to the two end surfaces of the base one by one, and are connected by a guide part and a movable part, so that the movable carrier can move up and down relative to the base. The movable part is a convex part respectively provided at the two ends of the movable carrier, and the guide part is a groove part respectively provided on the two end surfaces of the base. The convex parts are respectively embedded in the corresponding groove parts and can move up and down in the groove parts.

[0011] The lower surface of the movable carrier is connected to the bottom plate of the base through at least two second elastic members, and the second elastic members are respectively arranged at both ends of the movable carrier. A sensing ridge is provided on the lower surface of at least one end of the movable carrier, and a first sensor for sensing the sensing ridge is installed on the base. The lower surface of the movable carrier has a first bending strip extending downward, and the bottom plate of the base has a second bending strip extending upward, and the first bending strip and the second bending strip are overlapped to form a limiting column for fitting the second elastic member.

[0012] The further improved scheme in the above technical scheme is as follows:

[0013] 1. In the above solution, a supporting washer is provided between the housing of the first cylinder and the first elastic member.

[0014] 2. In the above solution, the support washer is sleeved on the first core shaft and is in compression contact with the end surface of the first elastic member.

[0015] 3. In the above solution, an exhaust seat is installed on the exhaust hole.

[0016] 4. In the above solution, a second sensor is installed on one end of the movable carrier plate that can move up and down, and the second sensor is located outside the material cup.

[0017] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0018] 1. In the integrated vacuum dispensing machine of the present invention, the piston rod of the cylinder is connected to the first flange via a core shaft, a through hole connected to the exhaust port is provided on the connecting seat along the direction of the core shaft, the core shaft is telescopically arranged in the through hole, a first elastic member is sleeved on the core shaft, one end of the first elastic member close to the first flange contacts the outer flange portion located on the end of the core shaft, and the other end of the first elastic member is extruded and connected to the housing of the cylinder. Through the provision of the first elastic member, a superimposed force can be applied to the first flange when the first flange is closed, thereby improving the sealing performance of the first flange to the exhaust port during long-term use, and preventing impact due to excessive contraction during the opening of the first flange, thereby extending the service life of the mechanism.

[0019] 2. The integrated vacuum dispensing machine of the present invention has an outer diameter ratio of 5:2~3 between the two second flanges respectively embedded in the two air inlets. When the vacuum chamber is in a pressure relief state, the second flange with a smaller outer diameter is pulled out from the corresponding air inlet by the second cylinder, and then the second flange with a larger outer diameter is pulled out from the corresponding air inlet. Through the coordinated arrangement between the first flange and the two second flanges of different sizes, on the basis of achieving vacuuming of the vacuum chamber, the precise adjustment of the air pressure in the vacuum chamber is further achieved, and the pressure can be relieved step by step during the vacuum breaking process, which not only avoids the sudden change of air pressure in the vacuum chamber and damage to products or equipment components, but also avoids the situation where the second flange cannot be opened due to insufficient output power of the cylinder. It reduces the requirements for cylinder output power, reduces energy consumption, reduces impact load on the vacuum chamber, and extends the service life of the equipment.

[0020] 3. The integrated vacuum dispensing machine of the present invention realizes the weight measurement of liquid in a vacuum environment through a simple and ingenious structural design, solves the problem that the electronic weighing equipment in the vacuum chamber is difficult to use, and avoids the situation where waste glue overflows during the operation of the dispensing machine and contaminates the workbench or even damages parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Attachment Figure 1 It is a structural schematic diagram of the integrated vacuum dispensing machine of the present invention;

[0022] Attachment Figure 2 This is a schematic diagram of the vacuum chamber and cylinder structure of the integrated vacuum dispensing machine of the present invention;

[0023] Attachment Figure 3 It is a partial cross-sectional structural schematic diagram of the integrated vacuum dispensing machine of the present invention;

[0024] Attachment Figure 4 This is a schematic structural diagram of the material cup module of the integrated vacuum dispensing machine of the present invention;

[0025] Attachment Figure 5 This is a structural schematic diagram of the movable carrier module of the integrated vacuum dispensing machine of the present invention;

[0026] Attachment Figure 6 This is a schematic diagram of the structure of the groove part and the convex part of the integrated vacuum dispensing machine of the present invention;

[0027] Attachment Figure 7 It is a schematic structural diagram of the sensing ridge and the second sensor of the present invention.

[0028] In the above drawings: 1. Vacuum chamber body; 2. Exhaust port; 3. Air inlet; 4. Flange portion; 5. First flange; 6. Second flange; 7. First cylinder; 8. Second cylinder; 9. Connecting seat; 10. First core shaft; 101. Outer flange portion; 11. First through hole; 12. Exhaust hole; 13. Exhaust seat; 14. First elastic member; 15. Support washer; 16. Frame; 17. Dispensing valve; 18. Workbench; 21. Base; 211. Second bending strip; 212. Groove portion; 22. Movable carrier plate; 221. First bending strip; 222. Outer convex portion; 23. Material cup; 24. Second elastic member; 25. Sensing convex strip; 26. First sensor; 27. Limiting column; 28. Second sensor; 29. ​​Guide portion; 30. Movable portion. DETAILED DESCRIPTION

[0029] In the description of this patent, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, for example, to mean a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection, an indirect connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this patent in specific circumstances.

[0030] Example 1: An integrated vacuum dispensing machine, comprising a vacuum chamber 1, a frame 16, a dispensing valve 17, and a workbench 18. The vacuum chamber 1 is mounted on the frame 16, the dispensing valve 17 and the workbench 18 are both located within the vacuum chamber 1, and the dispensing valve 17 is located directly above the workbench 18.

[0031] An air extraction port 2 and two air inlet ports 3 are provided on the outer surface of one side of the vacuum chamber body 1. The air extraction port 2 and the air inlet ports 3 each have a radially inwardly extending flange portion 4 on the inner wall near one end of the interior of the vacuum chamber body 1. A first flange 5 is embedded in the air extraction port 2, and a second flange 6 is embedded in the air inlet port 3. The end surface of one end of each of the first flange 5 and the second flange 6 is in surface contact with the end surface of the corresponding flange portion 4, and the other end of each of the first flange 5 and the second flange 6 is connected to the piston rod of the corresponding first cylinder 7 and the second cylinder 8;

[0032] A connecting seat 9 is installed on the air extraction port 2, one end surface of the connecting seat 9 is connected to the vacuum chamber body 1, and the first cylinder 7 is installed on the other end surface of the connecting seat 9. The piston rod of the first cylinder 7 is connected to the first flange 5 via a first core shaft 10. A first through hole 11 communicating with the air extraction port 2 is provided on the connecting seat 9 along the direction of the first core shaft 10. The first core shaft 10 is telescopically arranged in the first through hole 11. The connecting seat 9 also has an air extraction hole 12 communicating with the first through hole 11, and the air extraction hole 12 is used to connect to the vacuum pump;

[0033] A first elastic member 14 is mounted on the first core shaft 10. One end of the first elastic member 14, which is close to the first flange 5, contacts the outer flange 101 at the end of the first core shaft 10. The other end of the first elastic member 14 is extruded and connected to the housing of the first cylinder 7.

[0034] The outer diameter ratio of the two second flanges 6 respectively embedded in the two air inlets 3 is 5:2. When the vacuum chamber body 1 is in a pressure relief state, the second flange 6 with a smaller outer diameter is pulled out from the corresponding air inlet 3 by the second cylinder 8, and then the second flange 6 with a larger outer diameter is pulled out from the corresponding air inlet 3;

[0035] The workbench 18 is provided with a weighing mechanism, which includes a base 21 mounted on the workbench, a movable carrier plate 22 mounted on the upper portion of the base 21, and a material cup 23 placed on the upper surface of the movable carrier plate 22. The two ends of the movable carrier plate 22 correspond to the two end surfaces of the base 21 one by one, and are connected by a guide portion 29 and a movable portion 30, so that the movable carrier plate 22 can move up and down relative to the base 21.

[0036] The lower surface of the movable carrier 22 is connected to the bottom plate of the base 21 via at least two second elastic members 24 , which are respectively arranged at both ends of the movable carrier 22 . A sensing ridge 25 is provided on the lower surface of at least one end of the movable carrier 22 , and a first sensor 26 for sensing the sensing ridge 25 is installed on the base 21 .

[0037] A supporting washer 15 is provided between the housing of the first cylinder 7 and the first elastic member 14 . The supporting washer 15 is sleeved on the first core shaft 10 and is in press contact with the end surface of the first elastic member 14 .

[0038] An exhaust seat 13 is installed on the exhaust hole 12.

[0039] The second flange 6 and the piston rod of the second cylinder 8 are connected via a connecting block.

[0040] The lower surface of the movable carrier plate 22 has a first bending strip 221 extending downward, and the bottom plate of the base 21 has a second bending strip 211 extending upward. The first bending strip 221 and the second bending strip 211 overlap to form a limiting column 27 for fitting the second elastic member 24.

[0041] Example 2: An integrated vacuum dispensing machine, comprising a vacuum chamber 1, a frame 16, a dispensing valve 17, and a workbench 18. The vacuum chamber 1 is mounted on the frame 16, the dispensing valve 17 and the workbench 18 are both located within the vacuum chamber 1, and the dispensing valve 17 is located directly above the workbench 18.

[0042] An air extraction port 2 and two air inlet ports 3 are provided on the outer surface of one side of the vacuum chamber body 1. The air extraction port 2 and the air inlet ports 3 each have a radially inwardly extending flange portion 4 on the inner wall near one end of the interior of the vacuum chamber body 1. A first flange 5 is embedded in the air extraction port 2, and a second flange 6 is embedded in the air inlet port 3. The end surface of one end of each of the first flange 5 and the second flange 6 is in surface contact with the end surface of the corresponding flange portion 4, and the other end of each of the first flange 5 and the second flange 6 is connected to the piston rod of the corresponding first cylinder 7 and the second cylinder 8;

[0043] A connecting seat 9 is installed on the air extraction port 2, one end surface of the connecting seat 9 is connected to the vacuum chamber body 1, and the first cylinder 7 is installed on the other end surface of the connecting seat 9. The piston rod of the first cylinder 7 is connected to the first flange 5 via a first core shaft 10. A first through hole 11 communicating with the air extraction port 2 is provided on the connecting seat 9 along the direction of the first core shaft 10. The first core shaft 10 is telescopically arranged in the first through hole 11. The connecting seat 9 also has an air extraction hole 12 communicating with the first through hole 11, and the air extraction hole 12 is used to connect to the vacuum pump;

[0044] A first elastic member 14 is mounted on the first core shaft 10. One end of the first elastic member 14, which is close to the first flange 5, contacts the outer flange 101 at the end of the first core shaft 10. The other end of the first elastic member 14 is extruded and connected to the housing of the first cylinder 7.

[0045] The outer diameter ratio of the two second flanges 6 respectively embedded in the two air inlets 3 is 5:3. When the vacuum chamber body 1 is in a pressure relief state, the second flange 6 with a smaller outer diameter is pulled out from the corresponding air inlet 3 by the second cylinder 8, and then the second flange 6 with a larger outer diameter is pulled out from the corresponding air inlet 3;

[0046] The workbench 18 is provided with a weighing mechanism, which includes a base 21 mounted on the workbench, a movable carrier plate 22 mounted on the upper portion of the base 21, and a material cup 23 placed on the upper surface of the movable carrier plate 22. The two ends of the movable carrier plate 22 correspond to the two end surfaces of the base 21 one by one, and are connected by a guide portion 29 and a movable portion 30, so that the movable carrier plate 22 can move up and down relative to the base 21.

[0047] The lower surface of the movable carrier 22 is connected to the bottom plate of the base 21 via at least two second elastic members 24 , which are respectively arranged at both ends of the movable carrier 22 . A sensing ridge 25 is provided on the lower surface of at least one end of the movable carrier 22 , and a first sensor 26 for sensing the sensing ridge 25 is installed on the base 21 .

[0048] The first elastic member 14 is a bellows-shaped elastic member.

[0049] The movable portion 30 is a protruding portion 222 provided at both ends of the movable carrier plate 22, and the guide portion 29 is a groove portion 212 provided on the two end surfaces of the base 21. The protruding portions 222 are each embedded in the corresponding groove portion 212 and can move up and down in the groove portion 212.

[0050] A second sensor 28 is mounted on one end of the movable carrier plate 22 that can move up and down. The second sensor 28 is located outside the material cup 23 .

[0051] Working principle:

[0052] The first cylinder drives the first flange to extend and retract to control the opening and closing of the air extraction passage, thereby controlling the vacuuming work in the vacuum chamber body;

[0053] The opening and closing of the intake air passage is controlled by driving the expansion and contraction of the second flange through two second cylinders, thereby controlling the air pressure change and slight air pressure change in the vacuum chamber respectively;

[0054] When the first cylinder pulls the first flange away from the air extraction port, the externally connected air pump starts working to extract air from the vacuum chamber;

[0055] When the air pressure in the vacuum chamber is greater than the preset value of the air pressure sensor installed thereon, the first cylinder pushes the first flange into the air extraction port;

[0056] Pull the second flange with a smaller outer diameter away from the air inlet and fine-tune the air pressure in the vacuum chamber until it reaches the preset value;

[0057] When the operation inside the vacuum chamber is completed, first pull the second flange with a smaller outer diameter away from the air inlet to slowly release the pressure. When the air pressure inside the vacuum chamber reaches the preset value, pull the second flange with a larger outer diameter away from the air inlet to completely release the pressure.

[0058] When this patent is adopted, the elastic member is provided to apply a superimposed force to the first flange when the first flange is closed, thereby improving the sealing performance of the first flange to the air extraction port during long-term use, and preventing the first flange from causing impact due to excessive contraction during opening, thereby extending the service life of the mechanism;

[0059] In addition, by coordinating the first flange with the two second flanges of different sizes, the vacuum chamber body can be evacuated and the air pressure in the vacuum chamber body can be precisely adjusted. The pressure can also be gradually released during the vacuum breaking process, thereby avoiding damage to products or equipment components caused by sudden changes in air pressure in the vacuum chamber body and preventing the second flange from being unable to be opened due to insufficient cylinder output power. This reduces the requirements for cylinder output power, saves energy, and reduces the impact load on the vacuum chamber body, thereby extending the service life of the equipment.

[0060] In addition, through its simple and ingenious structural design, it realizes the weight measurement of liquid in a vacuum environment, solves the problem of difficult use of electronic weighing equipment in the vacuum chamber, and avoids the overflow of waste glue during the operation of the dispensing machine, which contaminates the workbench and even damages parts.

[0061] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. An integrated vacuum dispensing machine, characterized by: It comprises a vacuum chamber (1), a frame (16), a dispensing valve (17) and a workbench (18), wherein the vacuum chamber (1) is mounted on the frame (16), the dispensing valve (17) and the workbench (18) are both located in the vacuum chamber (1), and the dispensing valve (17) is located directly above the workbench (18); An air extraction port (2) and two air inlets (3) are provided on the outer surface of one side of the vacuum chamber body (1); the air extraction port (2) and the air inlet (3) each have a flange portion (4) extending radially inward on the inner wall near one end of the interior of the vacuum chamber body (1); a first flange (5) is embedded in the air extraction port (2), and a second flange (6) is embedded in the air inlet (3); the end faces of one end of each of the first flange (5) and the second flange (6) are in surface contact with the end faces of the corresponding flange portion (4); the other ends of each of the first flange (5) and the second flange (6) are connected to the piston rods of the corresponding first cylinder (7) and the second cylinder (8); A connecting seat (9) is installed on the exhaust port (2), one end face of the connecting seat (9) is connected to the vacuum chamber body (1), the first cylinder (7) is installed on the other end face of the connecting seat (9), the piston rod of the first cylinder (7) is connected to the first flange (5) via a first core shaft (10), a first through hole (11) connected to the exhaust port (2) is provided on the connecting seat (9) along the direction of the first core shaft (10), the first core shaft (10) is telescopically arranged in the first through hole (11), and an exhaust hole (12) connected to the first through hole (11) is also provided on the connecting seat (9), and the exhaust hole (12) is used to be connected to the vacuum pump; A first elastic member (14) is mounted on the first core shaft (10), one end of the first elastic member (14) close to the first flange (5) contacts the outer flange portion (101) located at the end of the first core shaft (10), and the other end of the first elastic member (14) is extrusion-connected to the housing of the first cylinder (7); The outer diameter ratio of the two second flanges (6) respectively embedded in the two air inlets (3) is 5:2~3. When the vacuum chamber (1) is in a pressure relief state, the second flange (6) with a smaller outer diameter is pulled out from the corresponding air inlet (3) by the second cylinder (8), and then the second flange (6) with a larger outer diameter is pulled out from the corresponding air inlet (3); A weighing mechanism is provided on the workbench (18), and the weighing mechanism includes a base (21) installed on the workbench, a movable carrier (22) installed on the upper part of the base (21), and a material cup (23) placed on the upper surface of the movable carrier (22), the two ends of the movable carrier (22) correspond to the two end surfaces of the base (21) one by one, and are connected by a guide portion (29) and a movable portion (30), so that the movable carrier (22) can move up and down relative to the base (21), the movable portion (30) is a convex portion (222) respectively provided at the two ends of the movable carrier (22), the guide portion (29) is a groove portion (212) respectively provided on the two end surfaces of the base (21), and the convex portions (222) are respectively embedded in the corresponding groove portion (212) and can move up and down in the groove portion (212); The lower surface of the movable carrier (22) and the bottom plate of the base (21) are connected via at least two second elastic members (24), the second elastic members (24) being respectively arranged at both ends of the movable carrier (22), the lower surface of at least one end of the movable carrier (22) being provided with a sensing convex strip (25), the base (21) being provided with a first sensor (26) for sensing the sensing convex strip (25), the lower surface of the movable carrier (22) being provided with a first bending strip (221) extending downward, the bottom plate of the base (21) being provided with a second bending strip (211) extending upward, the first bending strip (221) and the second bending strip (211) being overlapped to form a limiting column (27) for fitting the second elastic member (24).

2. The integrated vacuum dispensing machine according to claim 1, characterized in that: A supporting washer (15) is provided between the housing of the first cylinder (7) and the first elastic member (14).

3. The integrated vacuum dispensing machine according to claim 2, characterized in that: The supporting washer (15) is sleeved on the first core shaft (10) and is in extrusion contact with the end surface of the first elastic member (14).

4. The integrated vacuum dispensing machine according to claim 1, characterized in that: An air extraction seat (13) is installed on the air extraction hole (12).

5. The integrated vacuum dispensing machine according to claim 1, characterized in that: A second sensor (28) is installed on one end of the movable carrier plate (22) that can move up and down. The second sensor (28) is located outside the material cup (23).

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