Vacuumizing heat-sealing equipment

Abstract

The utility model relates to the technical field of toy packaging, in particular to a vacuumizing heat-sealing device which comprises a moving frame, a heat-sealing clamping mechanism, a vacuum pumping mechanism and an edge stroking mechanism, and the edge stroking mechanism, the heat-sealing clamping mechanism and the vacuum pumping mechanism are all installed on the moving frame. The heat-sealing clamping mechanism comprises a pair of heat-sealing rods which can be opened and closed mutually to clamp and heat-seal a bag opening of a packaging bag, and the suction end of the vacuum air suction mechanism and the output end of the edge smoothing mechanism can be inserted into the area between the two heat-sealing rods. The output end of the edge smoothing mechanism can be opened in the length direction of the gap between the two heat sealing rods so as to smoothen the bag opening of the packaging bag. The vacuumizing and heat-sealing equipment can be used for vacuumizing and heat-sealing, and also can be used for smoothing a bag opening before heat-sealing, so that the heat-sealing quality is ensured.

Description

Technical Field

[0001] This utility model relates to the field of toy packaging technology, specifically to a vacuum heat sealing device. Background Technology

[0002] Currently, many packaged small toys in the toy manufacturing process, such as gashapon toys, small toy balls, and small injection-molded parts, are difficult to package individually for transportation due to their relatively small size. This would be cumbersome and costly. Since these small toys can be sold directly without additional packaging, manufacturers typically place them all in a single bag before packing them into a cardboard box. This provides waterproofing and dustproofing, enhancing protection. After being placed in the bag, the packaging is then vacuum-sealed and heat-sealed. Atmospheric pressure compresses all the toys together, effectively preventing excessive gaps between them and facilitating later transportation.

[0003] In addition to the traditional manual vacuuming and heat-sealing process for packaging bags, the industry now generally uses semi-automatic vacuum heat-sealing equipment to improve efficiency and ensure heat-sealing quality. For example, patent CN202411085935.4 – a sealing machine for ton bag packaging – describes a method where, with the bag opening fully open, the clamping frame rotates via a connecting rod, causing two sponges to press and seal the bag opening. At this point, the vacuum component removes the air from the bag. After the air is removed, the vacuum component gradually rises until it leaves the bag. The clamping frame, through the rotation of the connecting rod, continues to press against the control box until the heating resistance layers on both sides contact the bag opening, activating the heating resistance layers and completing a rapid thermoplastic seal. However, in the patent, the worker needs to smooth out the bag opening before it can be heat-sealed by the clamping frame. If the worker does not smooth out the bag opening, the overlapping area of ​​the bag opening may leak air during the normal heat-sealing process. If the heating time is increased to ensure the heat-sealing effect of the overlapping area, the bag opening in the normal area is prone to melting due to excessive heating time, and the heat-sealing effect cannot be guaranteed. Utility Model Content

[0004] In order to overcome one of the shortcomings of the existing technology, the purpose of this utility model is to provide a vacuum heat sealing device. In addition to vacuuming and heat sealing, this vacuum heat sealing device can also ensure that the bag opening is straightened before heat sealing to ensure the quality of heat sealing.

[0005] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0006] A vacuum heat-sealing device includes a movable frame, a heat-sealing clamping mechanism, a vacuum pumping mechanism, and an edge-straightening mechanism. The edge-straightening mechanism, the heat-sealing clamping mechanism, and the vacuum pumping mechanism are all mounted on the movable frame. The heat-sealing clamping mechanism includes a pair of heat-sealing rods that can open and close to clamp and heat-seal the bag opening of the packaging bag. The suction end of the vacuum pumping mechanism and the output end of the edge-straightening mechanism can both be inserted into the area between the two heat-sealing rods. The output end of the edge-straightening mechanism can be opened along the length of the gap between the two heat-sealing rods to smooth the bag opening of the packaging bag.

[0007] Furthermore, the movable frame is equipped with a lifting mechanism, and both the vacuum pumping mechanism and the edge-trimming mechanism are mounted on the lifting mechanism.

[0008] Furthermore, the edge-straightening mechanism includes a mounting frame, a horizontal rail mounted on the mounting frame, a pair of sliding blocks slidably mounted on the horizontal rail, and a smoothing tongue mounted on each sliding block. The mounting frame is mounted on the lifting end of the lifting mechanism. The horizontal rail is arranged parallel to the sides of the two heat-sealing rods that cooperate and clamp each other. Both smoothing tongues can be inserted into the gap between the two heat-sealing rods on their cooperating sides. A double-headed cylinder is provided on the mounting frame, and the two ends of the double-headed cylinder are respectively hinged to the two sliding blocks.

[0009] Furthermore, both of the flattening tongues have chamfered edges on the opposite side.

[0010] Furthermore, the vacuum pumping mechanism includes a vacuum pump, a suction hose connected to the vacuum pump, and a suction pipe installed at the lifting end of the lifting mechanism. One end of the suction pipe is connected to the corresponding end of the suction hose, and the vacuum pump is installed on the moving frame or lifting mechanism.

[0011] Furthermore, the suction end of the suction tube is flat.

[0012] Furthermore, the lifting mechanism includes a vertical rail, a lifting cylinder, and a sliding seat slidably mounted on the vertical rail. The vertical rail is mounted on the movable frame. The mounting end of the lifting cylinder is hinged to the movable frame, and the telescopic end of the lifting cylinder is hinged to the sliding seat. The vacuum pumping mechanism and the edge-trimming mechanism are both mounted on the sliding seat.

[0013] Furthermore, the heat-sealing clamping mechanism also includes a swing frame and an opening / closing cylinder. One side of the swing frame is hinged to the movable frame. One heat-sealing rod is installed on the swinging end of the swing frame, and the remaining heat-sealing rod is fixedly installed on the movable frame. The mounting end of the opening / closing cylinder is hinged to the movable frame, and the telescopic end of the opening / closing cylinder is hinged to the swinging end of the swing frame. The opening / closing cylinder can drive the corresponding heat-sealing rod to open and close relative to the other heat-sealing rod through the swing frame.

[0014] Furthermore, each of the two heat-sealing rods is provided with a heating element on one side where they cooperate with each other, and the heating element is covered with an anti-stick cloth.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This utility model discloses a vacuum heat-sealing device with a pair of heat-sealing rods that can open and close together. The two rods clamp and heat-seal the bag opening, making it simple and convenient. Both the suction end of the vacuum pumping mechanism and the output end of the edge-straightening mechanism can be inserted into the area between the two heat-sealing rods. This allows the two heat-sealing rods to be inserted into the bag opening before clamping it, ensuring proper vacuuming and smoothing of the bag opening after clamping. The edge-straightening mechanism can open and flatten the bag opening, ensuring the quality of the subsequent heat sealing by the two heat-sealing rods.

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure 2 ;

[0020] Figure 3 This is a partial structural schematic diagram of an embodiment of the present utility model;

[0021] Figure 4 This is a partial structural schematic diagram of the heat-sealing clamping mechanism in the open state in an embodiment of this utility model.

[0022] Explanation of icon numbers:

[0023] 10. Movable frame, 20. Heat sealing clamping mechanism, 21. Heat sealing rod, 22. Swing frame, 23. Opening and closing cylinder, 24. Heating element, 30. Vacuum pumping mechanism, 31. Vacuum pump, 32. Suction hose, 33. Suction pipe, 40. Edge smoothing mechanism, 41. Mounting frame, 42. Horizontal rail, 43. Sliding block, 44. Smoothing tongue, 45. Double-headed cylinder, 50. Lifting mechanism, 51. Vertical rail, 52. Lifting cylinder, 53. Sliding seat. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0025] Reference Figures 1 to 4 The vacuum heat sealing device shown includes a movable frame 10, a heat sealing clamping mechanism 20, a vacuum pumping mechanism 30, and an edge smoothing mechanism 40. The edge smoothing mechanism 40, the heat sealing clamping mechanism 20, and the vacuum pumping mechanism 30 are all mounted on the movable frame 10. The heat sealing clamping mechanism 20 includes a pair of heat sealing rods 21 that can open and close to each other to clamp and heat seal the bag opening of the packaging bag. The suction end of the vacuum pumping mechanism 30 and the output end of the edge smoothing mechanism 40 can both be inserted into the area between the two heat sealing rods 21. The output end of the edge smoothing mechanism 40 can be opened along the length of the gap between the two heat sealing rods 21 to smooth the bag opening of the packaging bag.

[0026] Specifically, the heat-sealing clamping mechanism 20 and the vacuum extraction mechanism 30 can both adopt the corresponding structures in patent CN202411085935.4 - a sealing machine for ton bag packaging. In this application, the edge-straightening mechanism 40 primarily flattens the bag opening along the length of the two heat-sealing rods 21. Therefore, the edge-straightening mechanism 40 can achieve the aforementioned function using a cylinder-driven flattening block structure. Furthermore, the bottom of the movable frame 10 is equipped with casters and adjustable support feet. This structural design facilitates adaptation to different packaging environments and easy movement, improving usability.

[0027] This vacuum heat-sealing equipment is designed with a pair of heat-sealing rods 21 that can open and close together. The two heat-sealing rods 21 are used to clamp and heat-seal the bag opening, which is simple and convenient. The suction end of the vacuum pumping mechanism 30 and the output end of the edge-straightening mechanism 40 can both be inserted into the area between the two heat-sealing rods 21. This allows the two heat-sealing rods 21 to be inserted into the bag opening before clamping it, ensuring proper vacuuming and smoothing of the bag opening after clamping. The edge-straightening mechanism 40 can open and flatten the bag opening, ensuring the quality of the subsequent heat sealing by the two heat-sealing rods 21.

[0028] See Figures 1 to 2In one embodiment of this application, in order to facilitate clamping the bag opening of the packaging bag, the heat sealing clamping mechanism 20 further includes a swing frame 22 and an opening and closing cylinder 23. One side of the swing frame 22 is hinged to the movable frame 10. One heat sealing rod 21 is installed on the swinging end of the swing frame 22, and the remaining heat sealing rod 21 is fixedly installed on the movable frame 10. The mounting end of the opening and closing cylinder 23 is hinged to the movable frame 10. The telescopic end of the opening and closing cylinder 23 is hinged to the swinging end of the swing frame 22. The opening and closing cylinder 23 can drive the corresponding heat sealing rod 21 to open and close relative to the other heat sealing rod 21 through the swing frame 22. Since the suction end of the vacuum pumping mechanism 30 and the output end of the edge-straightening mechanism 40 both need to be inserted into the gap between the two heat-sealing rods 21 before they are clamped together, and can be pulled out after they are clamped together, the side of the two heat-sealing rods 21 that cooperates with each other in this application needs to have a certain elasticity so that the suction end of the vacuum pumping mechanism 30 and the output end of the edge-straightening mechanism 40 can be accommodated after clamping.

[0029] In this application, the heating of the two heat-sealing rods 21 can be achieved by heating the heating element alone or by heating the element externally with hot oil. In one embodiment of this application, in order to ensure that the two heat-sealing rods 21 do not heat the bag opening when the bag opening is smoothed out, an electric heating element 24 is provided on the side of the two heat-sealing rods 21 that cooperates with each other. The electric heating element 24 is covered with an anti-stick oil cloth. In addition to preventing the bag opening from directly contacting the electric heating element 24, the anti-stick oil cloth can also prevent the bag opening from being overheated and melted from sticking to the electric heating element 24.

[0030] See Figure 1 and Figure 3 Since both the vacuum pumping mechanism 30 and the edge-trimming mechanism 40 need to be raised and lowered, a lifting mechanism 50 is provided on the movable frame 10 in this application to reduce costs and facilitate control. Both the vacuum pumping mechanism 30 and the edge-trimming mechanism 40 are mounted on the lifting mechanism 50. Of course, in some embodiments, the vacuum pumping mechanism 30 and the edge-trimming mechanism 40 can be raised and lowered independently, which is designed according to actual usage requirements.

[0031] In one embodiment of this application, to achieve lifting, the lifting mechanism 50 includes a vertical rail 51, a lifting cylinder 52, and a sliding seat 53 slidably mounted on the vertical rail 51. The vertical rail 51 is mounted on the movable frame 10. The mounting end of the lifting cylinder 52 is hinged to the movable frame 10, and the telescopic end of the lifting cylinder 52 is hinged to the sliding seat 53. The vacuum pumping mechanism 30 and the edge-straightening mechanism 40 are both mounted on the sliding seat 53. Two sets of lifting cylinders 52 are provided, respectively located at both ends of the sliding seat 53, and are controlled synchronously, i.e., using the same air supply system and connected to the same air supply pipeline.

[0032] See Figures 1 to 4 In one embodiment of this application, to better smooth or flatten the overlapping bag opening, the edge-smoothing mechanism 40 includes a mounting frame 41, a horizontal rail 42 mounted on the mounting frame 41, a pair of sliding blocks 43 slidably mounted on the horizontal rail 42, and a smoothing tongue 44 mounted on each sliding block 43. The mounting frame 41 is mounted on the lifting end of the lifting mechanism 50. The horizontal rail 42 is arranged parallel to the sides of the two heat-sealing rods 21 that cooperate and clamp each other. Both smoothing tongues 44 can be inserted into the gap between the two heat-sealing rods 21 on their cooperating sides. A double-headed cylinder 45 is provided on the mounting frame 41, and the two ends of the double-headed cylinder 45 are respectively hinged to the two sliding blocks 43. The design of using double-headed cylinders 45 can achieve synchronous action to a certain extent, which facilitates the synchronous smoothing of the bag opening. Of course, in some embodiments, two cylinders with opposite extension directions can also be designed, with each cylinder pushing one sliding block 43 independently. Such a structure can also achieve the purpose of opening and smoothing the bag opening. In addition, the aforementioned mounting bracket 41 is actually mounted on the sliding seat 53, which ensures that the entire edge-straightening mechanism 40 can be raised and lowered to adapt to the smoothing work of the bag opening.

[0033] Furthermore, in the above embodiments, in order to better smooth the bag opening, the edges of both smoothing tongues 44 facing away from each other are provided with chamfers. This design prevents the edges from tearing the bag opening due to wind force during the smoothing process.

[0034] See 1 to Figure 4In one embodiment of this application, to better extract air from the packaging bag, the vacuum extraction mechanism 30 includes a vacuum pump 31, a suction hose 32 connected to the vacuum pump 31, and a suction pipe 33 installed at the lifting end of the lifting mechanism 50. One end of the suction pipe 33 is connected to the corresponding end of the suction hose 32. The vacuum pump 31 is installed on the movable frame 10 or the lifting mechanism 50. In this application, the suction pipe 33 is actually installed on the sliding seat 53, so that it can follow the lifting mechanism 40 in lifting and lowering movements. In order to reduce the lifting weight of the lifting mechanism 50, the vacuum pump 31 is installed on the movable frame 10 in this application. In addition, in one embodiment, in order to facilitate the extraction of vacuum from the packaging bag without affecting the packaging bag held by the two heat-sealing rods 21, the suction end of the suction pipe 33 is flat, wherein the width direction of the flat end of the suction pipe 33 is consistent with the gap direction between the two heat-sealing rods 21, which can reduce the impact on the clamping between the two heat-sealing rods 21.

[0035] The usage of this application is as follows: The worker transfers the toy packaging bag to the working area of ​​the movable frame 10, then opens the bag opening. At this time, the lifting cylinder 52 is extended or retracted, gradually approaching the bag opening against the sliding seat 53. The suction tube 33 and two smoothing tongues 44 on the sliding seat 53 are inserted into the bag opening. Next, the worker controls the opening and closing cylinder 23 to drive the swing frame 22, causing the corresponding heat-sealing rod 21 to close relative to the other heat-sealing rod 21. At this time, the two heat-sealing rods 21 initially clamp the bag opening, while the two smoothing tongues 44 can still move relative to each other within the gap between the two heat-sealing rods 21. The worker controls the double-headed cylinder 45 to extend, causing the two smoothing tongues 44 to move in opposite directions and smooth the bag opening along the gap between the two heat-sealing rods 21, finally opening and flattening the bag opening. After the double-headed cylinder 45 extends to its limit, the bag opening is completely flattened, and the double-headed cylinder 45 stops working. During this process, the vacuum pump 31 also performs vacuuming. Once the vacuum level inside the packaging bag reaches the preset pressure value, the vacuum pump 31 stops operating. At this point, the lifting cylinder 52 resets, causing the suction tube 33 and the two flattening tongues 44 to be pulled out of the bag opening. The two heat-sealing rods 21 can then be pressed twice, or the heating element 24 can be directly activated for heat sealing. After the heating time reaches the preset time, the heating element 24 stops working, the opening and closing cylinder 23 resets, and the swing frame 22 drives the corresponding heat-sealing rod 21 to open relative to the other heat-sealing rod 21, completing the heat sealing operation.

[0036] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A vacuum heat sealing device, characterized in that, The device includes a movable frame, a heat-sealing clamping mechanism, a vacuum pumping mechanism, and an edge-straightening mechanism. The edge-straightening mechanism, the heat-sealing clamping mechanism, and the vacuum pumping mechanism are all mounted on the movable frame. The heat-sealing clamping mechanism includes a pair of heat-sealing rods that can open and close to clamp and heat-seal the bag opening of the packaging bag. The suction end of the vacuum pumping mechanism and the output end of the edge-straightening mechanism can both be inserted into the area between the two heat-sealing rods. The output end of the edge-straightening mechanism can be opened along the length of the gap between the two heat-sealing rods to smooth the bag opening of the packaging bag.

2. The vacuum heat sealing device according to claim 1, characterized in that: The mobile frame is equipped with a lifting mechanism, and the vacuum pumping mechanism and the edge-trimming mechanism are both installed on the lifting mechanism.

3. The vacuum heat sealing device according to claim 2, characterized in that: The edge-straightening mechanism includes a mounting frame, a horizontal rail mounted on the mounting frame, a pair of sliding blocks slidably mounted on the horizontal rail, and a smoothing tongue mounted on each sliding block. The mounting frame is mounted on the lifting end of the lifting mechanism. The horizontal rail is arranged parallel to the sides of the two heat-sealing rods that cooperate and clamp each other. Both smoothing tongues can be inserted into the gap between the two heat-sealing rods on their cooperating sides. A double-headed cylinder is provided on the mounting frame, and the two ends of the double-headed cylinder are respectively hinged to the two sliding blocks.

4. The vacuum heat sealing device according to claim 3, characterized in that: Both of the flattening tongues have chamfered edges on the opposite side.

5. The vacuum heat sealing device according to claim 2, characterized in that: The vacuum pumping mechanism includes a vacuum pump, a suction hose connected to the vacuum pump, and a suction pipe installed at the lifting end of the lifting mechanism. One end of the suction pipe is connected to the corresponding end of the suction hose, and the vacuum pump is installed on the moving frame or lifting mechanism.

6. The vacuum heat sealing device according to claim 5, characterized in that: The suction tube has a flat end.

7. A vacuum heat sealing device according to any one of claims 2-6, characterized in that: The lifting mechanism includes a vertical rail, a lifting cylinder, and a sliding seat slidably mounted on the vertical rail. The vertical rail is mounted on the movable frame. The mounting end of the lifting cylinder is hinged to the movable frame, and the telescopic end of the lifting cylinder is hinged to the sliding seat. The vacuum pumping mechanism and the edge-trimming mechanism are both mounted on the sliding seat.

8. A vacuum heat sealing device according to any one of claims 1-6, characterized in that: The heat-sealing clamping mechanism also includes a swing frame and an opening and closing cylinder. One side of the swing frame is hinged to the movable frame. One heat-sealing rod is installed on one swinging end of the swing frame, and the remaining heat-sealing rod is fixedly installed on the movable frame. The mounting end of the opening and closing cylinder is hinged to the movable frame, and the telescopic end of the opening and closing cylinder is hinged to one swinging end of the swing frame. The opening and closing cylinder can drive the corresponding heat-sealing rod to open and close relative to the other heat-sealing rod through the swing frame.

9. A vacuum heat sealing device according to claim 8, characterized in that: Each of the two heat-sealing rods has a heating element on one side where they cooperate, and the heating element is covered with an anti-stick cloth.

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