Gas circuit connecting structure and vacuum sealer

Abstract

The utility model discloses a gas circuit connecting structure and a vacuum sealing machine, and belongs to the technical field of sealing machines, the gas circuit connecting structure comprises a gas distribution disc group, the gas distribution disc group comprises a first gas disc, the first gas disc comprises a first matching surface, and a plurality of gas distribution ports are uniformly arranged on the first matching surface around the axis at intervals; the second air disc comprises a second matching surface which is in sliding sealing fit with the first matching surface, and two communicating ports corresponding to the air distributing ports; when the disc body rotates around the axis, the first air disc rotates synchronously, and the air distribution ports are communicated with the first ports, the vacuum sources are communicated with the corresponding vacuum bins, so that the vacuum degree is generated in the vacuum bins, the disc body continues to rotate, the air distribution ports are separated from the first ports, communicated with the second ports, communicated with the atmosphere and release vacuum, and the next air distribution port is communicated with the first ports. The gas circuit connecting structure can meet the requirement for circulating gas distribution operation of the rotary vacuum sealer, and the working efficiency of the vacuum sealer is improved.

Description

Technical Field

[0001] This utility model relates to the field of intelligent packaging equipment technology, and in particular to an air circuit connection structure and a vacuum sealing machine. Background Technology

[0002] Vacuum sealing machines are devices used for sealing plastic food packaging bags. They generally include a vacuum chamber, which is equipped with a thermoplastic sealing device. When sealing plastic packaging bags, the packaging bag is placed in the vacuum chamber, the vacuum chamber is evacuated, and then the vacuumed plastic packaging bag is thermoplastic sealed. The vacuum chamber needs to be equipped with a vacuum pipeline connected to the vacuum generating equipment, and a thermoplastic sealing device.

[0003] To improve the working efficiency of sealing machines, a rotary vacuum sealing machine is provided, which includes two spaced-apart discs and multiple vacuum chambers arranged around the discs. The discs can rotate around an axis, driving the multiple vacuum chambers to rotate around the axis. During the rotation, the vacuum chambers can perform vacuuming, heat shrink sealing, vacuum breaking, and material unloading processes. When the rotary vacuum sealing machine is working, the vacuum chambers are in motion, so the arrangement of vacuum pipelines and cooling pipelines is inconvenient. Utility Model Content

[0004] The purpose of this invention is to solve the above-mentioned problems by providing an air circuit connection structure and a vacuum sealing machine.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: a gas path connection structure, including a gas distribution plate assembly, the gas distribution plate assembly comprising:

[0006] The first air plate includes a first mating surface perpendicular to the axis, and multiple air distribution ports are evenly spaced around the axis on the first mating surface.

[0007] The second gas plate rotates around the axis of the first gas plate and is in rotatable engagement with the first gas plate. It includes a second mating surface that slides and seals with the first mating surface. Around the circumference, the second mating surface is provided with two communication ports corresponding to the gas distribution ports. One communication port is used to communicate with the vacuum source, and the other is used to communicate with the atmosphere.

[0008] Furthermore, the connection port for communicating with the vacuum source is an arc-shaped port coaxial with the axis of the first gas disk.

[0009] Furthermore, along the circumferential direction, on both sides of the communication port for communicating with the atmosphere, two second communication ports are also provided on the second mating surface, and a communication channel connecting the two second communication ports is provided inside the second air plate.

[0010] Furthermore, a third connection port is provided between the first end of the arc-shaped opening and the second connection port near the first end. The third connection port is used to connect with the vacuum source, and the first end is the end of the arc-shaped opening away from the connection port used to connect with the atmosphere.

[0011] Furthermore, the second air plate includes a first plate and a second plate that are detachably and fixedly connected. The first plate has two first grooves and a connecting groove connecting the two first grooves on one side near the second plate. The second plate has two first through holes that are connected to the first grooves.

[0012] Furthermore, a vacuum connection pipe is provided on the outer peripheral surface of the first air plate, which corresponds to and communicates with multiple air distribution ports one by one.

[0013] Furthermore, the first air plate is provided with a central hole coaxial with the axis, and an annular groove is coaxially provided on the inner circumferential surface of the central hole. The first air plate is provided with multiple diversion ports communicating with the annular groove.

[0014] Furthermore, the diversion port is located on the side opposite to the first mating surface, and the separation port is set one-to-one with multiple air distribution ports.

[0015] Furthermore, a linkage plate is provided on the side of the first air plate away from the second air plate, and a retaining spring is provided between the linkage plate and the end face of the first air plate.

[0016] Furthermore, this application also provides a vacuum sealing machine, including any of the above-described air passage connection structures, and further including two spaced discs and a plurality of vacuum chambers evenly arranged circumferentially between the two discs. The valve body assembly of the air passage connection structure is coaxially arranged with the discs, and the plurality of vacuum chambers are connected to a plurality of air distribution ports one by one.

[0017] Compared with the prior art, the gas connection structure and vacuum sealing machine disclosed in this utility model have the following advantages: When the disc body is driven to rotate around the axis, the first gas disc rotates synchronously. When the gas distribution port is connected to the first port, the vacuum source can be connected to the corresponding vacuum chamber, thereby generating a vacuum in the vacuum chamber. As the disc body continues to rotate, the gas distribution port is separated from the first port and connected to the second port, thereby connecting with the atmosphere, releasing the vacuum, and making it easy to open the vacuum chamber cover to take out the packaging inside. The next gas distribution port is connected to the first port, and so on, realizing the cyclic sealing operation. This gas connection structure can meet the cyclic gas distribution operation of the rotary vacuum sealing machine and improve the working efficiency of the vacuum sealing machine. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the gas connection structure of this utility model. Figure 1 .

[0019] Figure 2 This is a schematic diagram of the gas connection structure of this utility model. Figure 2 .

[0020] Figure 3 This is a schematic diagram of the structure of the first air disc in the air passage connection structure of this utility model. Figure 1 .

[0021] Figure 4 This is a schematic diagram of the structure of the first air disc in the air passage connection structure of this utility model. Figure 2 .

[0022] Figure 5 This is a schematic diagram of the structure of the second air disc in the air circuit connection structure of this utility model.

[0023] Figure 6 This is a schematic diagram of the first disc in the gas connection structure of this utility model.

[0024] Figure 7 This is a schematic diagram of the second disc in a gas connection structure of this utility model.

[0025] Figure 8 This is a schematic diagram of the axial structure of the second air disc in the air passage connection structure of this utility model.

[0026] Figure 9 This is a cross-sectional schematic diagram of the first air disc in an air passage connection structure of this utility model.

[0027] Figure 10 This is a schematic diagram of the structure of a vacuum sealing machine according to the present invention.

[0028] In the diagram: 1. Vacuum chamber; 13. Valve body assembly; 4. Central tube; 41. Gas distribution plate assembly; 410. First gas plate; 4101. First mating surface; 4102. Gas distribution port; 411. Second gas plate; 4110. First plate; 41100. First groove; 41101. Connecting groove; 4111. Second plate; 41110. First through hole; 41111. Arc-shaped hole; 41112. Second through hole; 41113. Third through hole; 4112. Second mating surface; 412. Vacuum connecting pipe; 4130. First port; 4131. Second port; 4132. Third port; 414. Conduit; 4140. Quick connector; 4141. Flow port; 4142. Annular groove; 42. Central stop gear; 43. Linkage plate; 44. Compression spring; 5. Plate body. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0030] Example 1

[0031] refer to Figures 1-5 The technical solution of this utility model is: a gas path connection structure, including a gas distribution plate assembly 41, the gas distribution plate assembly 41 including:

[0032] The first air plate 410 includes a first mating surface 4101 perpendicular to the axis, and a plurality of air distribution ports 4102 are evenly spaced around the axis on the first mating surface 4101.

[0033] The second air plate 411 rotates around the axis of the first air plate 410 and is in rotatable engagement with the first air plate 410. It includes a second mating surface 4112 that is in sliding and sealing engagement with the first mating surface 4101. Around the circumference, the second mating surface 4112 is provided with two communication ports corresponding to the air distribution port 4102. One communication port is used to communicate with the vacuum source, and the other is used to communicate with the atmosphere.

[0034] For details, please refer to Figure 10 This is a schematic diagram of a vacuum sealing machine. The vacuum sealing machine includes two discs 5, with a central tube 4 coaxially positioned at the center of each disc 5. During operation, the central tube 4 is horizontally positioned, and the two discs 5 rotate around the axis of the central tube 4. Multiple vacuum chambers 1 are evenly spaced along the circumferential edge of each disc 5. The two ends of each vacuum chamber 1 are connected to the two discs 5 via support shafts. A valve assembly 13 communicating with the vacuum chamber 1 is mounted on the support shafts. Each vacuum chamber 1 also contains a heating element for thermoplastic sealing and a cooling pipe for cooling the heating element. The valve body assembly 13 is also equipped with a connection port for connecting to the cooling pipeline. The gas connection structure of this application includes a gas distribution plate assembly 41, which includes a first gas plate 410 and a second gas plate 411 coaxially arranged with the central pipe 4. In use, the first gas plate 410 is connected to the plate body 5 and can rotate synchronously with the plate body 5. The multiple gas distribution ports 4102 on the first gas plate 410 are connected to the valve body assemblies 13 of multiple vacuum chambers 1 one by one through vacuum tubes. The second gas plate 411 is connected to the frame of the vacuum sealing machine and does not rotate. (Refer to...) Figures 1-5 The second air plate 411 has a first port 4130 connected to the vacuum source and a second port 4131 connected to the atmosphere on the side opposite to the first air plate 410. The second mating surface 4112 has two connecting ports that are respectively connected to the first port 4130 and the second port 4131. During operation, when the plate body 5 is driven to rotate around the axis, the first air plate 410 rotates synchronously. When the air distribution port 4102 is connected to the first port 4130, the vacuum source can be connected to the corresponding vacuum chamber 1, thereby creating a vacuum in the vacuum chamber 1. As the plate body 5 continues to rotate, the air distribution port 4102 separates from the first port 4130 and connects to the second port 4131, thereby connecting to the atmosphere and releasing the vacuum, making it easy to open the cover of the vacuum chamber 1 and take out the packaging inside. Then the next air distribution port 4102 connects to the first port 4130, and so on, to realize the cyclic sealing operation. This air circuit connection structure can meet the cyclic air distribution operation of the rotary vacuum sealing machine and improve the working efficiency of the vacuum sealing machine.

[0035] Furthermore, as a specific implementation method, refer to Figure 5 The connection port for communicating with the vacuum source is an arc-shaped port coaxial with the axis of the first gas disk 410.

[0036] Specifically, by setting the connecting port connected to the first port 4130 as an arc-shaped port, when the first air plate 410 rotates with the plate body 5, the connection time between each air distribution port 4102 and the first port 4130 can be extended, increasing the connection time between the vacuum chamber 1 and the vacuum source, thereby ensuring that the vacuum chamber 1 has a sufficient vacuum degree, ensuring the vacuuming effect on the packaging bag in the vacuum chamber 1, improving the vacuuming quality of the vacuum sealing machine, and ensuring the packaging quality.

[0037] Furthermore, as a specific implementation method, refer to Figure 5 Along the circumferential direction, on both sides of the communication port for communicating with the atmosphere, two second communication ports are also provided on the second mating surface 4112, and a communication channel connecting the two second communication ports is provided in the second air plate 411. Specifically, as a specific implementation method, it can be understood that when the vacuum sealing machine is working, the vacuum chamber 1 rotates around the axis of the central tube 4 for circulation. Around the axis, there are vacuuming stations corresponding to the first port 4130 and vacuum breaking stations corresponding to the second port 4131. The vacuum chamber 1 needs to go through vacuuming, sealing and vacuum breaking. After vacuum breaking, the chamber cover is opened, and the sealed packaging bags inside are discharged. Then, packaging bags that need to be vacuum sealed are placed in the vacuum chamber 1 again, and then vacuuming is performed again through the vacuuming stations. This application can connect the vacuum chamber 1 that needs to be vacuum broken with the vacuum chamber 1 that needs to be vacuumed by setting two second connecting ports and connecting channels on both sides of the second port 4131. The vacuum in the vacuum chamber 1 that needs to be vacuum broken is used to balance the vacuum in the other vacuum chamber 1, so that the other vacuum chamber 1 has an initial vacuum, thereby achieving the effect of energy recovery and energy consumption reduction.

[0038] Furthermore, as a specific implementation, a third connecting port is provided between the first end of the arc-shaped opening and the second connecting port near the first end. The third connecting port is used to connect with the vacuum source, and the first end is the end of the arc-shaped opening away from the connecting port used to connect with the atmosphere.

[0039] Specifically, by setting a third connection port, the vacuum chamber 1 can be connected to the first port 4130 before a rough vacuum is drawn, ensuring that the vacuum chamber 1 has a certain degree of vacuum before being connected to the first port 4130, thus ensuring the vacuum quality inside the vacuum chamber 1 and the vacuum quality of the inner packaging bag.

[0040] Furthermore, as a specific implementation, the second air plate 411 has the following specific structure: (Refer to...) Figures 5-8The second air plate 411 includes a first plate 4110 and a second plate 4111 that are detachably and fixedly connected. The first plate 4110 is provided with two first grooves 41100 and a connecting groove 41101 that connects the two first grooves 41100 on one side near the second plate 4111. The second plate 4111 is provided with two first through holes 41110 that are corresponding to and connected to the first grooves 41100.

[0041] Specifically, the second air plate 411 includes a first plate 4110 and a second plate 4111 that are detachably and fixedly connected. The first plate 4110 is provided with a first opening 4130, a second opening 4131, and a third opening 4132, and is also provided with two first grooves 41100 and an arc-shaped connecting groove 41101 connecting the two first grooves 41100. The second plate 4111 is provided with an arc-shaped hole 41111, a second through hole 41112, and a third through hole 41113 corresponding to the first opening 4130, the second opening 4131, and the third opening 4132, and is also provided with two first through holes 41111 corresponding to the two first grooves 41100. After the second plate 4111 is set on the first plate 4110, the second plate 4111 blocks the arc-shaped connecting groove 41101, thereby forming a connecting channel between the arc-shaped connecting groove 41101 and the second plate 4111. The position where the first through hole 41110 and the first groove 41100 connect is the second connecting port. One end of the arc-shaped hole 41111 is blocked by the first plate 4110 and connects with the first port 4130 to form a connecting port of the arc-shaped opening. The second through hole 41112 connects with the third port 4132 to form another connecting port. With this arrangement, the second air plate 411 is easy to process and manufacture.

[0042] Further, refer to Figures 1-4 As a specific implementation, a vacuum connecting pipe 412 is provided on the outer peripheral surface of the first air plate 410, which corresponds to and communicates with a plurality of air distribution ports 4102. Specifically, by providing a vacuum connecting pipe 412 corresponding to a plurality of air distribution ports 4102 on the outer peripheral surface of the first air plate 410, it is convenient to communicate with the vacuum chamber 1 through the vacuum connecting pipe 412, and the arrangement on the outer peripheral surface is structurally reasonable.

[0043] Furthermore, as a specific implementation method, refer to Figure 9The first air plate 410 has a central hole coaxial with the axis, and an annular groove 4142 is coaxially provided on the inner circumferential surface of the central hole. The first air plate 410 is provided with multiple branch ports 4141 communicating with the annular groove 4142. Specifically, both the first air plate 410 and the second air plate 411 are provided with a central hole that rotatably engages with the central tube 4. Both the first air plate 410 and the second air plate 411 are rotatably mounted on the central tube 4, and the inner circumferential surface of the first air plate 410 is sealed to the outer circumferential surface of the central tube 4. A conduit 414 is provided inside the central tube 4. One end of the conduit 414 extends out of the central tube 4 for communication with a cooling source, and the other end passes through the side wall of the central tube 4 for communication with the annular groove 4142. The second air plate 411 is also provided with multiple branch ports 4141, which are used to connect one-to-one with the pipes for cooling the heating elements in multiple vacuum chambers 1, thereby providing a cooling source for the vacuum chambers 1. The cooling source can be any one of cooling water, cooling oil, or cooling air.

[0044] Furthermore, as a preferred embodiment, refer to Figure 4 , Figure 9 The flow divider 4141 is located on the side opposite to the first mating surface 4101, and the flow divider is corresponding one-to-one with multiple air distribution ports 4102. Specifically, the structure is reasonable through the above arrangement.

[0045] Furthermore, as a specific implementation method, refer to Figures 1-9 A linkage plate 43 is provided on the side of the first air plate 410 away from the second air plate 411. A retaining spring 44 is provided between the linkage plate 43 and the end face of the first air plate 410. Specifically, in one particular embodiment, the central tube 4 is connected to the support frame and does not rotate. The plate body 5 and the first air plate 410 are rotatably engaged with the central tube 4. The linkage plate 43 is connected to the plate body 5 and rotates synchronously with the plate body 5. A spring 44 is provided between the linkage plate 43 and the first air plate 4110 to provide a clamping force to the first air plate 410, thereby ensuring that the first mating surface 4101 and the second mating surface 4112 are tightly fitted and ensuring airtightness.

[0046] Example 2

[0047] This application also provides a vacuum sealing machine, see reference. Figure 10 The gas connection structure includes any of the above-described gas path connection structures, and also includes two spaced discs 5 and a plurality of vacuum chambers 1 evenly arranged circumferentially between the two discs 5. The valve body assembly 13 of the gas path connection structure is coaxially arranged with the discs 5, and the plurality of vacuum chambers 1 are connected to the plurality of gas distribution ports 4102 in a one-to-one correspondence.

[0048] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A gas path connection structure, characterized in that, Including a gas distribution plate assembly (41), which includes: The first air plate (410) includes a first mating surface (4101) perpendicular to the axis, and a plurality of air distribution ports (4102) are evenly spaced around the axis on the first mating surface (4101). The second air plate (411) rotates around the axis of the first air plate (410) and is in rotatable engagement with the first air plate (410). It includes a second mating surface (4112) that is in sliding and sealing engagement with the first mating surface (4101). Around the circumference, the second mating surface (4112) is provided with two communication ports corresponding to the air distribution port (4102). One communication port is used to communicate with the vacuum source, and the other is used to communicate with the atmosphere.

2. The gas connection structure according to claim 1, characterized in that, The connection port for connecting to the vacuum source is an arc-shaped port coaxial with the axis of the first gas disk (410).

3. A gas path connection structure according to claim 1 or 2, characterized in that, Along the circumferential direction, on both sides of the communication port for communicating with the atmosphere, two second communication ports are also provided on the second mating surface (4112), and a communication channel connecting the two second communication ports is provided in the second air plate (411).

4. The gas connection structure according to claim 3, characterized in that, A third connection port is provided between the first end of the arc-shaped opening and the second connection port near the first end. The third connection port is used to connect with the vacuum source. The first end is the end of the arc-shaped opening away from the connection port used to connect with the atmosphere.

5. The gas connection structure according to claim 4, characterized in that, The second air plate (411) includes a first plate (4110) and a second plate (4111) that are detachably and fixedly connected. The first plate (4110) has two first grooves (41100) and a connecting groove (41101) connecting the two first grooves (41100) on one side near the second plate (4111). The second plate (4111) has two first through holes (41110) that are corresponding to and connected to the first grooves (41100).

6. The gas connection structure according to claim 1, characterized in that, The outer circumferential surface of the first air plate (410) is provided with a vacuum connecting pipe (412) that corresponds to and communicates with multiple air distribution ports (4102).

7. The gas connection structure according to claim 1, characterized in that, The first air plate (410) is provided with a central hole coaxial with the axis, and an annular groove (4142) is provided coaxially on the inner circumferential surface of the central hole. The first air plate (410) is provided with a plurality of diversion ports (4141) communicating with the annular groove (4142).

8. The gas connection structure according to claim 7, characterized in that, The flow divider (4141) is located on the side opposite to the first mating surface (4101), and the flow divider is set one-to-one with the multiple air distribution ports (4102).

9. The gas connection structure according to claim 1, characterized in that, A linkage plate (43) is provided on the side of the first air plate (410) away from the second air plate (411), and a retaining spring (44) is provided between the linkage plate (43) and the end face of the first air plate (410).

10. A vacuum sealing machine, characterized in that, The gas connection structure includes any one of claims 1-9, and further includes two spaced discs (5) and a plurality of vacuum chambers (1) uniformly arranged circumferentially between the two discs (5). The valve body assembly (13) of the gas connection structure is coaxially arranged with the discs (5), and the plurality of vacuum chambers (1) are connected to the plurality of gas distribution ports (4102) one by one.

Images