Cooling device of pillow packaging machine

Abstract

The utility model discloses a pillow packaging machine cooling device which comprises two cooling plates arranged side by side, and a heat sealing gap allowing a packaging film to penetrate through is formed between the two cooling plates. A snakelike flow channel is arranged in the cooling plate, and two ends of the snakelike flow channel are respectively connected with a water inlet pipe and a water outlet pipe. Cooling water can be continuously provided for the S-shaped flow channel in the cooling plate through the water inlet pipe and the water outlet pipe, so that continuous cooling of the cooling plate is achieved, and the problem of thermal shrinkage deformation of a packaging film of a product transported above the cooling plate due to temperature rise of the cooling plate is solved. Meanwhile, according to the scheme, the flow channels arranged in the cooling plate are arranged to be snake-shaped, through the snake-shaped circuitous form, the circulation cross sectional area of the snake-shaped flow channels can be conveniently reduced, and the snake-shaped flow channels can be filled with cooling water. Meanwhile, the circulation path of cooling water in the snake-shaped flow channel can be prolonged, the heat dissipation area is increased, and the heat dissipation efficiency is improved.

Description

Technical Field

[0001] This application relates to the technical field of packaging equipment, and more particularly to a cooling device for a pillow bag machine. Background Technology

[0002] Currently, pillow packaging machines (also known as pillow bag machines) are automatic packaging equipment suitable for pharmaceuticals, food, daily necessities, or similar items. Their operation involves the following steps: product feeding and pushing, film feeding and conveying, item entry into the packaging film and its conveying, sealing and cutting. In existing pillow bag machines, the sealing and cutting mechanism has a slit in the middle of the conveyor belt above the heat-sealing device that allows the packaging film to extend downwards. During sealing, the product with the packaging film is conveyed on the conveyor belt, and both sides of the packaging film extend downwards from the slit into the heat-sealing device. The heat-sealing device then heat-seals and cuts the packaging film, thus achieving continuous automatic heat sealing.

[0003] However, due to the excessively high temperature of the heat sealing device, the temperature of the conveyor belt at the top will rise after prolonged operation, which will cause the packaging film of the product at the top to deform due to heat melting. Utility Model Content

[0004] The purpose of this utility model embodiment is to provide a pillowcase machine cooling device that can solve the above-mentioned problems existing in the prior art.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] A pillowcase cooling device includes two cooling plates arranged side by side, with a heat-sealed gap between the two cooling plates allowing the packaging film to pass through; the cooling plates have serpentine flow channels, with an inlet pipe and an outlet pipe respectively connected to the two ends of the serpentine flow channels.

[0007] Optionally, the flow area of ​​the serpentine channel is no more than three times the area of ​​the inlet pipe.

[0008] Optionally, the total flow area of ​​the serpentine channel is not less than 40% of the upper surface area of ​​the cooling plate.

[0009] Optionally, the cooling plate includes a top plate, a middle plate, and a bottom plate. A serpentine channel is formed on the middle plate. The top plate and the bottom plate are respectively connected to the upper and lower sides of the middle plate, thereby enclosing and forming the serpentine flow channel.

[0010] Optionally, the intermediate plate and the top plate, and the bottom plate and the intermediate plate are sealed together by welding or gluing.

[0011] Optionally, the outer edge of the intermediate plate and the edge of the serpentine groove are filled with solder or adhesive between them and the top plate to achieve a sealed connection between the intermediate plate and the top plate.

[0012] Optionally, the base plate is provided with a plurality of connection holes, and the connection holes and the space between the outer edge of the base plate and the intermediate plate are filled with solder or adhesive to achieve a sealed connection between the base plate and the intermediate plate.

[0013] Optionally, on the side of the cooling plate near the heat-sealing gap, the edge of the top plate extends beyond the edges of the intermediate plate and the bottom plate by a certain distance.

[0014] Optionally, the base plate is provided with an inlet and an outlet at the two ends of the serpentine flow channel, respectively, with the inlet pipe connected to the inlet and the outlet pipe connected to the outlet.

[0015] Optionally, the bottom plate and / or the top plate are provided with expansion grooves corresponding to the positions of the water inlet and the water outlet.

[0016] The beneficial effects of this application are as follows: This solution provides a cooling device for a pillowcase machine, including two cooling plates arranged side by side. Each cooling plate has a serpentine flow channel. Cooling water is continuously supplied to the serpentine flow channel within the cooling plate through inlet and outlet pipes to achieve continuous cooling of the cooling plate and solve the problem of thermal shrinkage and deformation of the packaging film of the products transported above it due to increased cooling plate temperature. Simultaneously, the serpentine shape of the flow channel within the cooling plate facilitates a reduction in the cross-sectional area of ​​the flow channel, allowing it to be filled with cooling water. Furthermore, it extends the flow path of the cooling water within the serpentine flow channel, increasing the heat dissipation area and improving heat dissipation efficiency. Attached Figure Description

[0017] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the cooling device for the pillowcase machine described in the embodiments of this application;

[0019] Figure 2 This is a schematic diagram of the structure of the cooling plate described in the embodiment of this application (showing the internal hidden structure);

[0020] Figure 3 This is a schematic diagram of the structure of the top plate described in an embodiment of this application;

[0021] Figure 4 This is a schematic diagram of the structure of the intermediate plate described in the embodiment of this application;

[0022] Figure 5 This is a schematic diagram of the structure of the base plate described in the embodiment of this application.

[0023] In the picture:

[0024] 10. Cooling plate; 11. Serpentine flow channel; 12. Top plate; 121. Expansion groove; 122. Positioning hole; 13. Intermediate plate; 131. Serpentine through groove; 14. Bottom plate; 141. Water inlet; 142. Water outlet; 143. Connection hole; 20. Heat sealing gap; 31. Water inlet pipe; 32. Water outlet pipe. Detailed Implementation

[0025] To make the technical problems solved, the technical solutions adopted, and the technical effects achieved by this application clearer, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] like Figure 1-2 As shown, this embodiment provides a pillowcase machine cooling device, including two cooling plates 10 arranged side by side, with a heat-sealed gap 20 between the two cooling plates 10 that allows the packaging film to pass through; the cooling plate 10 has a serpentine flow channel 11, and the two ends of the serpentine flow channel 11 are respectively connected to an inlet pipe 31 and an outlet pipe 32.

[0029] In practical application, the cooling device of the pillow-wrapping machine in this embodiment is located above the heat-sealing device of the pillow-wrapping machine, and its front and rear ends are respectively connected to the conveyor belts that transport products. When the conveyor belts transport the product with packaging film to the cooling device, the two sides of the packaging film enter the heat-sealing device through the heat-sealing gap 20. The heat-sealing device heat-melts the two sides of the packaging film together, thereby realizing the automatic heat-sealing process. It should be noted that the cooling device of the pillow-wrapping machine in this solution does not follow the movement of its front and rear conveyor belts. When the product is completely pushed onto the stationary cooling device, the conveyor belt cannot directly move the product. However, the conveyor belt can move the product to be heat-sealed at the rear end of the product to the cooling device. The product at the rear pushes the product at the front to move to the next conveyor belt, thereby realizing the continuous pushing of products.

[0030] Regarding heat dissipation within the cooling plate 10, the inlet pipe 31 delivers cooling water to the serpentine flow channel 11. As the cooling water flows within the serpentine flow channel 11, it continuously carries away heat from the cooling plate 10, thus cooling it down. The cooling water that has undergone heat exchange within the serpentine flow channel 11 then flows out through the outlet pipe 32. The inlet pipe 31 and outlet pipe 32 can be connected to both ends of the refrigeration equipment. The cooling water cooled by the refrigeration equipment flows into the cooling plate 10 through the inlet pipe 31, while the cooling water in the cooling plate 10 flows back into the refrigeration equipment through the outlet pipe 32 for further cooling.

[0031] The pillowcase cooling device of this embodiment continuously supplies cooling water to the serpentine flow channel 11 within the cooling plate 10 via the inlet pipe 31 and the outlet pipe 32, thereby achieving continuous cooling of the cooling plate 10 and solving the problem of thermal shrinkage and deformation of the packaging film of the products transported above it due to the increased temperature of the cooling plate 10. Simultaneously, the flow channel within the cooling plate 10 is designed in a serpentine shape. This serpentine, meandering form facilitates a reduction in the cross-sectional area of ​​the serpentine flow channel 11, allowing it to be filled with cooling water. Furthermore, it extends the flow path of the cooling water within the serpentine flow channel 11, increasing the heat dissipation area and improving heat dissipation efficiency.

[0032] For the specific configuration of the serpentine flow channel 11 in the cooling plate 10, please refer to... Figure 2Preferably, both the inlet pipe 31 and the outlet pipe 32 are connected to the side of the cooling plate 10 away from the heat-sealing gap 20, thus avoiding the obstruction of the heat-sealing device below by the arrangement of the inlet pipe 31 and the outlet pipe 32. The serpentine flow channel 11 includes several straight sections and turning sections. The turning sections enable the flow channel to change direction, meeting the requirements of extending the length of the serpentine flow channel 11 and increasing the heat exchange area. Furthermore, the position of the heat-sealing device near the heat-sealing gap 20 is the main heat-generating part, and the temperature of the side of the cooling plate 10 near the heat-sealing gap 20 will be higher. Therefore, in this solution, the side of the cooling plate 10 near the heat-sealing gap 20 has a straight section arranged along the length direction of the heat-sealing gap 20. This straight section extends from one end of the cooling plate 10 to the other end, thereby ensuring effective heat dissipation of the side of the cooling plate 10 near the heat-sealing gap 20.

[0033] To ensure that the serpentine flow channel 11 is filled with cooling water and to maximize the heat exchange area between the cooling water and the serpentine flow channel 11, in this design, the flow area of ​​the serpentine flow channel 11 is no more than three times the orifice area of ​​the inlet pipe 31. Specifically, after the cooling water enters the serpentine flow channel 11 through the inlet pipe 31, the flow velocity within the serpentine flow channel 11 will be relatively low due to the increased flow area. However, this design controls the flow area of ​​the serpentine flow channel 11 to within three times the orifice area of ​​the inlet pipe 31, and combined with the turbulence effect of the bends in the serpentine flow channel 11, it can basically guarantee that the cooling water can fill the serpentine flow channel 11.

[0034] Furthermore, the total flow area of ​​the serpentine channel 11 is not less than 40% of the upper surface area of ​​the cooling plate 10. By controlling the total flow area of ​​the serpentine channel 11 to be more than 40% of the upper surface area of ​​the cooling plate 10, it is ensured that the cooling water and the cooling plate 10 have a sufficiently large contact heat exchange area to meet the heat exchange requirements.

[0035] Reference Figure 2 The cooling plate 10 includes a top plate 12, a middle plate 13 and a bottom plate 14. A serpentine channel 131 is provided on the middle plate 13. The top plate 12 and the bottom plate 14 are respectively connected to the upper and lower sides of the middle plate 13, thereby forming the serpentine flow channel 11.

[0036] The cooling plate 10 in this design adopts a structure assembled from plates such as a top plate 12, a middle plate 13, and a bottom plate 14. A serpentine through groove 131 is opened on the middle plate 13, which is easy to process. After the plates are formed, they are spliced ​​together. Therefore, the cooling plate 10 in this design has the advantage of low processing difficulty.

[0037] Regarding the connection method of each plate, the middle plate 13 and the top plate 12, and the bottom plate 14 and the middle plate 13 are sealed and connected by welding or adhesive bonding.

[0038] Specifically, welding or adhesive bonding is used for connection, which not only meets the connection strength requirements but also seals the joints, ensuring the sealing performance of the device and preventing cooling water leakage.

[0039] Regarding the connection between the intermediate plate 13 and the top plate 12, the outer edge of the intermediate plate 13 and the edge of the serpentine groove 131 are filled with solder or adhesive between them and the top plate 12 to achieve a sealed connection between the intermediate plate 13 and the top plate 12.

[0040] In this way, by connecting and fixing the middle plate 13 to the top plate 12 at the inner and outer edges respectively, the connection area between the middle plate 13 and the top plate 12 can be increased, thereby improving the connection reliability; at the same time, a double sealing effect can be achieved, thereby improving the sealing performance.

[0041] Regarding the connection between the base plate 14 and the intermediate plate 13, refer to... Figure 5 The base plate 14 is provided with a plurality of connection holes 143. Solder or adhesive is filled in the connection holes 143 and between the outer edge of the base plate 14 and the intermediate plate 13 to achieve a sealed connection between the base plate 14 and the intermediate plate 13.

[0042] Similarly, the connection hole 143 can be filled with solder or adhesive to connect the base plate 14 and the intermediate plate 13 from the middle, thereby improving the reliability of the connection between the base plate 14 and the intermediate plate 13 and improving the sealing performance.

[0043] During the actual assembly, first install the middle plate 13 onto the top plate 12 and then reinforce it. After that, install the bottom plate 14 onto the middle plate 13 and reinforce it.

[0044] Reference Figure 2 On the side of the cooling plate 10 near the heat-sealing gap 20, the edge of the top plate 12 extends beyond the edges of the middle plate 13 and the bottom plate 14 by a certain distance.

[0045] Specifically, to prevent the sharp edges of the cooling plate 10 from cutting the product's packaging film, after assembling the various panels, the side of the cooling plate 10 near the heat-sealing gap 20 needs to be sanded. If the edges of the middle plate 13 and the bottom plate 14 are flush with the top plate 12, the solder or adhesive may be easily sanded away during the sanding process, leading to leakage. To overcome this problem, in this design, the sides of the middle plate 13 and the bottom plate 14 near the heat-sealing gap 20 are recessed relative to the top plate 12. When sanding the corners, only the edge of the top plate 12 needs to be sanded, avoiding the risk of the solder or adhesive connecting the panels being sanded away.

[0046] In addition, the front and rear ends of the top plate 12 extend beyond the edges of the middle plate 13 and the bottom plate 14 by a certain distance. At the same time, a positioning hole 122 is provided in the part of the top plate 12 that extends beyond the edge. The pillow bag machine cooling device of this solution can be fixed to the pillow bag machine through the positioning hole 122.

[0047] In some embodiments, the base plate 14 is provided with an inlet 141 and an outlet 142 at the two ends of the serpentine flow channel 11, respectively, the inlet pipe 31 is connected to the inlet 141, and the outlet pipe 32 is connected to the outlet 142.

[0048] Specifically, the inlet 141 and outlet 142 are set on the base plate 14, and the inlet pipe 31 and outlet pipe 32 can be set on one side of the base plate 14 to avoid the inlet pipe 31 and outlet pipe 32 from obstructing the conveying of products on the upper side.

[0049] Furthermore, the bottom plate 14 and / or the top plate 12 are provided with expansion grooves 121 at positions corresponding to the water inlet 141 and the water outlet 142.

[0050] Specifically, when cooling water enters the serpentine flow channel 11 through the inlet pipe 31, the low height of the serpentine flow channel 11 makes it difficult for the cooling water to quickly spread throughout the channel, resulting in a significant impact on the top plate 12 and hindering the flow of cooling water. This solution provides expansion grooves 121 at the corresponding positions of the inlet 141 and outlet 142, which increases the height of the serpentine flow channel 11 at the inlet 141 and outlet 142, thereby reducing the obstruction to the flow of cooling water, accelerating its flow, and reducing the impact on the top plate 12.

[0051] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and other orientations or positional relationships are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0052] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0053] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0054] The technical principles of this application have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this application without inventive effort, and these embodiments will all fall within the scope of protection of this application.

Claims

1. A cooling device for a pillowcase machine, characterized in that, It includes two cooling plates (10) arranged side by side, with a heat-sealed gap (20) between the two cooling plates (10) that allows the packaging film to pass through; the cooling plates (10) have a serpentine flow channel (11), and the two ends of the serpentine flow channel (11) are respectively connected to an inlet pipe (31) and an outlet pipe (32).

2. The pillowcase machine cooling device according to claim 1, characterized in that, The flow area of ​​the serpentine channel (11) is no more than three times the area of ​​the hole in the water inlet pipe (31).

3. The pillowcase machine cooling device according to claim 2, characterized in that, The total area of ​​the serpentine flow channel (11) is not less than 40% of the upper surface area of ​​the cooling plate (10).

4. The pillowcase machine cooling device according to claim 1, characterized in that, The cooling plate (10) includes a top plate (12), a middle plate (13) and a bottom plate (14). The middle plate (13) has a serpentine channel (131). The top plate (12) and the bottom plate (14) are respectively connected to the upper and lower sides of the middle plate (13) to form the serpentine flow channel (11).

5. The pillowcase machine cooling device according to claim 4, characterized in that, The intermediate plate (13) and the top plate (12), and the bottom plate (14) and the intermediate plate (13) are sealed together by welding or adhesive bonding.

6. The pillowcase machine cooling device according to claim 5, characterized in that, The outer edge of the intermediate plate (13) and the edge of the serpentine groove (131) are filled with solder or adhesive between them and the top plate (12) to achieve a sealed connection between the intermediate plate (13) and the top plate (12).

7. The pillowcase machine cooling device according to claim 5, characterized in that, The base plate (14) is provided with a plurality of connection holes (143), and the connection holes (143) and the space between the outer edge of the base plate (14) and the intermediate plate (13) are filled with solder or adhesive to achieve a sealed connection between the base plate (14) and the intermediate plate (13).

8. The pillowcase machine cooling device according to claim 5, characterized in that, On the side of the cooling plate (10) near the heat-sealing gap (20), the edge of the top plate (12) extends beyond the edges of the middle plate (13) and the bottom plate (14) by a certain distance.

9. The pillowcase machine cooling device according to claim 4, characterized in that, The base plate (14) is provided with an inlet (141) and an outlet (142) at the two ends of the serpentine channel (11), respectively. The inlet pipe (31) is connected to the inlet (141), and the outlet pipe (32) is connected to the outlet (142).

10. The pillowcase machine cooling device according to claim 9, characterized in that, The bottom plate (14) and / or the top plate (12) are provided with expansion grooves (121) at positions corresponding to the water inlet (141) and the water outlet (142).

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