Vacuum suction device of dispensing machine

Abstract

The present invention discloses a vacuum suction device for a dispensing machine, which is mounted on a vacuum chamber body. An air extraction port and an air inlet are formed on the outer surface of one side of the vacuum chamber body. A first flange is embedded in the air extraction port, and a second flange is embedded in the air inlet. At least one vacuum pressure sensor is mounted on the vacuum chamber body. When a first cylinder pulls the first flange away from the air extraction port, air is extracted from the vacuum chamber body. When the air pressure in the vacuum chamber body exceeds a preset value, the first cylinder pushes the first flange into the air extraction port. The present invention can not only improve the sealing performance of the first flange against the air extraction port during long-term use, but also prevent impact caused by excessive contraction during the opening of the first flange, thereby extending the service life of the mechanism.

Description

Technical Field

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

[0002] A vacuum dispensing machine is a device that dispenses glue in a vacuum environment. As an important component of the machine, the vacuum chamber mainly uses the force of negative pressure to first remove the air in the vacuum box during the infusion process, and then infuse the product. This can quickly penetrate the glue into the product. The bubbles generated by the infusion impact and the contact between the glue and the product can also be quickly removed under the action of negative pressure, thereby ensuring the high performance of the product.

[0003] In existing technologies, when a chamber is evacuated, the large pressure differential between the chamber and the outside air pressure, coupled with the time delay associated with valve closing, can lead to unstable vacuum levels within the chamber. Furthermore, the large internal and external pressure differential creates a suction force that demands a high output power from the valve's closing mechanism. This high kinetic energy of the valve's opening and closing mechanism can impact the chamber, reducing its service life. Summary of the Invention

[0004] The purpose of the present invention is to provide a vacuum suction device for a dispensing machine, which can not only improve the sealing performance of the first flange to the exhaust port during long-term use, but also prevent impact caused by excessive contraction during the opening of the first flange, thereby extending the service life of the mechanism.

[0005] To achieve the above-mentioned object, the technical solution adopted by the present invention is as follows: a vacuum suction device of a dispensing machine is installed on a vacuum chamber body, an outer surface of one side of the vacuum chamber body is provided with an air extraction port and an air inlet, the air extraction port and the air inlet 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 is embedded in the air extraction port, and a second flange is embedded in the air inlet, the end face of each of the first flange and the second flange is in surface contact with the end face of the corresponding flange portion, and the other end of each of the first flange and the second flange is connected to the piston rod of the corresponding first cylinder and the second cylinder;

[0006] 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;

[0007] An elastic member is mounted on the first core shaft, one end of the elastic member close to the first flange contacts the outer flange portion located on the end of the first core shaft, and the other end of the elastic member is squeezed and connected to the shell of the first cylinder. At least one vacuum pressure sensor is installed on the vacuum chamber body. When the first cylinder pulls the first flange away from the air extraction port, air is extracted from the vacuum chamber body. When the air pressure in the vacuum chamber body is greater than a preset value, the first cylinder pushes the first flange into the air extraction port.

[0008] A pad is provided between the first cylinder and the connecting seat, and the other end of the elastic member is squeezed and connected to the pad. A second through hole is provided in the center of the pad for the piston rod of the first cylinder and the first core shaft to pass through. An air outlet hole connected to the second through hole is provided on the outer end surface of the pad. The inner diameter of the second through hole near the end of the elastic member is smaller than the inner diameter of the second through hole near the end of the first cylinder.

[0009] The further improved scheme in the above technical scheme is as follows:

[0010] 1. In the above solution, the cushion block includes a main body portion close to the first cylinder and a protruding portion embedded in the air extraction port.

[0011] 2. In the above solution, a screw passes through the first cylinder and the pad in sequence and connects to the connecting seat, thereby installing the first cylinder and the pad on the connecting seat.

[0012] 3. In the above solution, a support base for mounting the second cylinder is installed on the air inlet.

[0013] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0014] 1. The vacuum suction device of the dispensing machine of the present invention is characterized in that the piston rod of the cylinder is connected to the first flange by a core shaft, and a through hole connected to the air suction port is provided on the connecting seat along the direction of the core shaft, and the core shaft is telescopically arranged in the through hole, and an elastic member is mounted on the core shaft, and one end of the 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 elastic member is squeezed and connected to the shell of the cylinder. Through the setting of the 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 air suction 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.

[0015] 2. The vacuum suction device of the dispensing machine of the present invention is provided with a pad between the first cylinder and the connecting seat, the other end of the elastic member is squeezed and connected to the pad, and a second through hole is provided in the center of the pad for the piston rod of the first cylinder and the first core shaft to penetrate, and an air outlet hole connected to the second through hole is provided on the outer end face of the pad, which can ensure that the piston rod of the cylinder always maintains a constant driving force during long-term reciprocating motion and avoids the situation where the flange cannot be driven to seal the air suction port due to holding in the air; further, the inner diameter of the second through hole close to the end of the elastic member is smaller than the inner diameter close to the end of the first cylinder, which can make the assembly between the cylinder and the pad tighter and maintain smooth exhaust of the air outlet, further preventing the cylinder piston rod from moving poorly due to holding in the air, and ensuring the smooth and stable operation of the vacuum process during long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Attachment Figure 1 It is a structural schematic diagram of the vacuum suction device of the glue dispensing machine of the present invention;

[0017] Attachment Figure 2 Schematic diagram of the structure of the pad in the vacuum suction device of the dispensing machine of the present invention Figure 1 ;

[0018] Attachment Figure 3 Schematic diagram of the structure of the pad in the vacuum suction device of the dispensing machine of the present invention Figure 2 ;

[0019] Attachment Figure 4 It is a schematic cross-sectional structural diagram of the vacuum suction device of the glue dispensing machine of the present invention.

[0020] 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; 14. Elastic member; 15. Support washer; 16. Pad; 161. Main body; 162. Raised portion; 17. Second through hole; 18. Air outlet; 19. Vacuum pressure sensor. DETAILED DESCRIPTION

[0021] The present invention can be further understood through the specific embodiments given below, but they are not intended to limit the present invention.

[0022] Example 1: A vacuum suction device for a dispensing machine is installed on a vacuum chamber body 1, and an air extraction port 2 and an air inlet 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 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 3, and 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;

[0023] 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;

[0024] An elastic member 14 is mounted on the first core shaft 10. One end of the elastic member 14 close to the first flange 5 contacts the outer flange 101 located at the end of the first core shaft 10. The other end of the elastic member 14 is squeezed and connected to the housing of the first cylinder 7.

[0025] A cushion block 16 is provided between the first cylinder 7 and the connecting seat 9. The other end of the elastic member 14 is squeezed and connected to the cushion block 16. A second through hole 17 is provided in the center of the cushion block 16 for the piston rod of the first cylinder 7 and the first core shaft 10 to pass through. An air outlet 18 communicating with the second through hole 17 is provided on the outer end surface of the cushion block 16.

[0026] The inner diameter of the second through hole 17 at the end close to the elastic member 14 is smaller than the inner diameter of the second through hole 17 at the end close to the first cylinder 7 .

[0027] The elastic member 14 is a bellows-shaped elastic member.

[0028] A supporting washer 15 is provided between the housing of the first cylinder 7 and the elastic member 14 . The supporting washer 15 is sleeved on the first core shaft 10 and is in press contact with the end face of the elastic member 14 .

[0029] The support washer 15 is fixedly disposed in the air extraction port 2 .

[0030] A support base for mounting the second cylinder 8 is installed on the air inlet 3 .

[0031] Example 2: A vacuum suction device for a dispensing machine is installed on a vacuum chamber body 1, and an air extraction port 2 and an air inlet 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 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 3, and 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] An elastic member 14 is mounted on the first core shaft 10. One end of the elastic member 14 close to the first flange 5 contacts the outer flange 101 located at the end of the first core shaft 10. The other end of the elastic member 14 is squeezed and connected to the housing of the first cylinder 7.

[0034] A cushion block 16 is provided between the first cylinder 7 and the connecting seat 9. The other end of the elastic member 14 is squeezed and connected to the cushion block 16. A second through hole 17 is provided in the center of the cushion block 16 for the piston rod of the first cylinder 7 and the first core shaft 10 to pass through. An air outlet 18 communicating with the second through hole 17 is provided on the outer end surface of the cushion block 16.

[0035] The inner diameter of the second through hole 17 at the end close to the elastic member 14 is smaller than the inner diameter of the second through hole 17 at the end close to the first cylinder 7 .

[0036] The cushion block 16 includes a main body 161 close to the first cylinder 7 and a protruding portion 162 embedded in the air extraction port 2 .

[0037] A screw passes through the first cylinder 7 and the pad 16 in sequence and connects to the connecting seat 9 , thereby installing the first cylinder 7 and the pad 16 on the connecting seat 9 .

[0038] At least one vacuum pressure sensor 19 is installed on the vacuum chamber body 1 .

[0039] Working principle:

[0040] 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;

[0041] The second cylinder drives the second flange to expand and contract to control the opening and closing of the intake passage and the pressure change in the vacuum chamber.

[0042] 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;

[0043] 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;

[0044] Pull the second flange away from the air inlet and adjust the air pressure in the vacuum chamber until it reaches the preset value;

[0045] When the operation inside the vacuum chamber is completed, pull the second flange away from the air inlet to release the pressure.

[0046] 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;

[0047] In addition, it can ensure that the piston rod of the cylinder always maintains a constant driving force during the long-term reciprocating motion, avoiding the situation where the flange cannot be driven to seal the exhaust port due to holding the air;

[0048] Furthermore, it can not only make the assembly between the cylinder and the gasket tighter, but also maintain smooth exhaust of the air outlet, further preventing the cylinder piston rod from moving poorly due to holding the air, and ensure smooth and stable operation of the vacuum process during long-term use.

[0049] 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. A vacuum suction device for a dispensing machine, characterized in that: It is installed on a vacuum chamber body (1), and an air extraction port (2) and an air inlet (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 face of each of the first flange (5) and the second flange (6) is in surface contact with the end face of the corresponding flange portion (4); 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); 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; An elastic member (14) is mounted on the first core shaft (10), and one end of the 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 elastic member (14) is squeezed and connected to the shell of the first cylinder (7). At least one vacuum pressure sensor (19) is installed on the vacuum chamber (1). When the first cylinder (7) pulls the first flange (5) away from the air extraction port (2), air is extracted from the vacuum chamber (1). When the air pressure in the vacuum chamber (1) is greater than a preset value, the first cylinder (7) pushes the first flange (5) into the air extraction port (2); A cushion block (16) is provided between the first cylinder (7) and the connecting seat (9), and the other end of the elastic member (14) is squeezed and connected to the cushion block (16). A second through hole (17) is provided in the center of the cushion block (16) for the piston rod of the first cylinder (7) and the first core shaft (10) to pass through. An air outlet hole (18) communicating with the second through hole (17) is provided on the outer end surface of the cushion block (16), and the inner diameter of the second through hole (17) near the end of the elastic member (14) is smaller than the inner diameter of the second through hole (17) near the end of the first cylinder (7).

2. The vacuum suction device of the dispensing machine according to claim 1, characterized in that: The cushion block (16) comprises a main body (161) close to the first cylinder (7) and a raised portion (162) embedded in the air extraction port (2).

3. The vacuum suction device of the dispensing machine according to claim 1, characterized in that: A screw passes through the first cylinder (7) and the pad (16) in sequence and is connected to the connecting seat (9), thereby installing the first cylinder (7) and the pad (16) on the connecting seat (9).

4. The vacuum suction device of the dispensing machine according to claim 1, characterized in that: A support base for mounting a second cylinder (8) is mounted on the air inlet (3).

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