Heat sealing device for packaging

Abstract

The utility model relates to a heat sealing device for packaging, which comprises a heat sealing component and a centralizing component, the heat sealing component comprises a fixed heat sealing piece and a movable heat sealing piece, the fixed heat sealing piece comprises a fixed block and a first electric heating block, the first electric heating block is externally connected with a power supply for heating, and the movable heat sealing piece comprises a movable block and a second electric heating block. The movable block moves in the direction close to or away from the fixed block, the second electric heating block is externally connected with a power source to emit heat, and the opposite sides of the first electric heating block and the second electric heating block are fixedly connected with the fixed block and the movable block correspondingly; the centralizing moving plate moves in the direction close to or away from the centralizing fixing plate, and the second driving piece is connected with the centralizing moving plate. A packaging bag is placed at the position between the centralizing fixed plate and the centralizing movable plate, the centralizing movable plate moves in the direction close to the centralizing fixed plate so that the packaging bag can be fixed conveniently, the packaging bag can be effectively prevented from inclining, and normal operation of the heat sealing process is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging, in particular to a heat sealing device for packaging. Background Art

[0002] The product needs to be stored in a sealed state to ensure product quality. Specifically, after the product is bagged, a heat sealing device is required to seal the bag.

[0003] For example, the utility model patent with application number CN201921579652.X proposes a plastic bag packaging sealing and heat sealing machine with a vacuum device, in which one of the two sealing heat sealers is fixedly connected to the sealing operating table, and the other sealing heat sealer is movably connected to the sealing operating table, and any of the sealing heat sealers is composed of a sealing heat sealing block, a sealing heat sealing sheet and a second heat conducting device, the sealing heat sealing sheet is located on one side of the sealing heat sealing block, and the sealing heat sealing sheet is fixedly connected to the sealing heat sealing block.

[0004] However, the packaging bag is easy to fall over during the heat sealing process, which affects the heat sealing process. Utility Model Content

[0005] In view of this, it is necessary to provide a packaging heat sealing device to solve the problem that the packaging bag is easy to tip over during the heat sealing process, thereby affecting the heat sealing process.

[0006] The utility model provides a packaging heat sealing device, comprising a heat sealing component and a straightening component, the heat sealing component comprising a fixed heat sealing part and a movable heat sealing part, the fixed heat sealing part comprising a fixed block and a first electric heating block, the first electric heating block is connected to an external power supply for heating, the movable heat sealing part comprises a movable block and a second electric heating block, the movable block moves in a direction approaching or away from the fixed block, the second electric heating block is connected to an external power supply for heating, the first electric heating block and the second electric heating block are fixedly connected to the fixed block and the movable block on opposite sides thereof, respectively, the straightening component comprises a straightening fixed plate, a straightening movable plate and a second driving component located directly below the heat sealing component, the straightening movable plate moves in a direction approaching or away from the straightening fixed plate, the second driving component is connected to the straightening movable plate for driving the straightening movable plate to move, and a straightening gap for limiting a packaging bag is formed between the straightening fixed plate and the straightening movable plate.

[0007] Furthermore, a plurality of protrusions and a plurality of recesses arranged alternately are formed on opposite sides of the first electric heating block and the second electric heating block, and the plurality of protrusions on the first electric heating block can be sequentially inserted into the plurality of recesses on the second electric heating block, and the plurality of protrusions on the second electric heating block can be sequentially inserted into the plurality of recesses on the first electric heating block.

[0008] Furthermore, the plurality of protrusions and the plurality of recesses are staggeredly connected to form a tooth-shaped structure, and the width of the tooth-shaped structure is greater than the width of the bag opening of the packaging bag.

[0009] Furthermore, the raised portion is a V-shaped pointed end structure, and the recessed portion is a V-shaped concave structure.

[0010] Furthermore, the raised portion is an arc-shaped outwardly convex structure, and the recessed portion is an arc-shaped inwardly concave structure.

[0011] Furthermore, it also includes a positioning component, which includes a pressure block and a spring. The pressure block is arranged between the fixed block and the movable block and is located on the side pointed by the line between the multiple protrusions or the recessed parts. The pressure block is connected to the movable block via the spring to fix the bag opening of the packaging bag.

[0012] Furthermore, the number of the pressing blocks and the number of the springs are both two, and the two pressing blocks are arranged in parallel to the extension direction of the protruding portion or the recessed portion to fix the two sides of the bag opening of the packaging bag.

[0013] Furthermore, a mounting groove is formed on the moving block, the spring is built into the mounting groove, and the pressing block can be moved to a position built into the mounting groove.

[0014] Furthermore, a groove is formed on the fixed block, the raised portion and the recessed portion on the fixed block are built into the groove, and the raised portion and the groove on the movable block can be moved into the groove.

[0015] Furthermore, it also includes a sensing component, which includes a pressure sensor and the power supply, the pressure sensor is built into a circular hole formed on the fixed block and is arranged opposite to the pressure block, the power supply is installed on the side of the fixed block away from the movable block, the power supply is electrically connected to the pressure sensor, the power supply is connected to the first electric heating block and the second electric heating block, and the power supply controls the action of the first electric heating block and the second electric heating block through the pressure value detected by the pressure sensor.

[0016] Compared with the prior art, the packaging bag is placed between the straightening fixed plate and the straightening movable plate, and the movable heat sealing part moves in the direction close to the fixed heat sealing part to achieve heat sealing of the bag opening of the packaging bag. At the same time, the straightening movable plate moves in the direction close to the straightening fixed plate to fix the packaging bag therebetween, which can effectively prevent the packaging bag from tilting and ensure the normal progress of the heat sealing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the overall structure of the heat sealing device for packaging provided in an embodiment of the utility model;

[0018] Figure 2 A schematic diagram of the structure of the abutment between the pressure block and the pressure sensor in the packaging heat sealing device provided by the embodiment of the utility model;

[0019] Figure 3 A schematic diagram of the structure of the abutment between the first electric heating block and the second electric heating block in the packaging heat sealing device provided by an embodiment of the utility model;

[0020] Figure 4 A schematic diagram of the arrangement of the protrusions and recesses on a fixing block in a packaging heat sealing device provided in an embodiment of the utility model;

[0021] Figure 5 A schematic diagram of the arrangement of raised portions and recessed portions on a moving block in a packaging heat sealing device provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0023] like Figure 1-3 As shown, the utility model provides a packaging heat sealing device, including a heat sealing assembly 100 and a straightening assembly 200, a fixed heat sealing member 110 and a movable heat sealing member 120, the fixed heat sealing member 110 includes a fixed block 111 and a first electric heating block 112, the first electric heating block 112 is connected to an external power source 520 for heating, the movable heat sealing member 120 includes a movable block 121 and a second electric heating block 122, the movable block 121 moves in a direction close to or away from the fixed block 111, the second electric heating block 122 is connected to an external power source 520 for heating, the first electric heating block 112 and the second electric heating block 122 are connected to an external power source 520 for heating, The opposite sides of the electric heating block 122 are fixedly connected to the fixed block 111 and the movable block 121 respectively. The straightening assembly 200 includes a straightening fixed plate 210, a straightening movable plate 220 and a second driving member 230 located directly below the heat sealing assembly 100. The straightening movable plate 220 moves in a direction approaching or away from the straightening fixed plate 210. The second driving member 230 is connected to the straightening movable plate 220 to drive the straightening movable plate 220 to move. A straightening gap for limiting the packaging bag is formed between the straightening fixed plate 210 and the straightening movable plate 220.

[0024] During implementation, the packaging bag is placed between the straightening fixed plate 210 and the straightening movable plate 220, and the movable heat sealing element 120 moves in a direction close to the fixed heat sealing element 110 to achieve heat sealing of the bag opening of the packaging bag. At the same time, the straightening movable plate 220 moves in a direction close to the straightening fixed plate 210 to fix the packaging bag therebetween, which can effectively prevent the packaging bag from tilting and ensure the normal progress of the heat sealing process.

[0025] The fixed heat seal 110 in this embodiment is in contact with one side of the bag opening, and the movable heat seal 120 can be moved to a position in contact with the other side of the bag opening, thereby achieving the heat sealing function of the bag opening.

[0026] In one embodiment, a plurality of protrusions and a plurality of recesses arranged alternately are formed on opposite sides of the first electric heating block 112 and the second electric heating block 122. The plurality of protrusions on the first electric heating block 112 can be sequentially inserted into the plurality of recesses on the second electric heating block 122, and the plurality of protrusions on the second electric heating block 122 can be sequentially inserted into the plurality of recesses on the first electric heating block 112.

[0027] The bag mouth of the packaging bag is placed between the first electric heating block 112 and the second electric heating block 122, and the movable block 121 is moved in a direction close to the fixed block 111 until the packaging bag is clamped between the first electric heating block 112 and the second electric heating block 122. By setting a plurality of staggered raised portions and a plurality of recessed portions, the portion of the packaging bag between the first electric heating block 112 and the second electric heating block 122 is wavy, and the wavy portion of the packaging bag has a plurality of bending portions, and the bending directions of two adjacent bending portions are different. The portion of the packaging bag between the two adjacent bending portions will be pulled in different directions, which can effectively avoid the formation of wrinkles. The first electric heating block 112 and the second electric heating block 122 are energized, and the first electric heating block 112 and the second electric heating block 122 generate heat to achieve heat sealing of the bag mouth, thereby effectively improving the sealing of the packaging bag after heat sealing.

[0028] The heat sealing device can be applied to a frame N of a packaging machine, the fixed block 111 is fixedly connected to the frame N, and the moving block 121 is slidably connected to the frame N in a direction approaching or moving away from the fixed block 111. It can be understood that the moving block 121 can be connected to the output end of the first driving member 131 installed on the frame N, and the output end of the first driving member 131 drives the moving block 121 to move.

[0029] It should be noted that the plurality of raised portions and the plurality of recessed portions are staggered and connected to form a tooth-shaped structure, and the width of the tooth-shaped structure is greater than the width of the bag opening of the packaging bag.

[0030] In one embodiment, the protrusion is a V-shaped tip structure, and the recess is a V-shaped concave structure.

[0031] In another embodiment, the raised portion is an arc-shaped outwardly convex structure, and the recessed portion is an arc-shaped inwardly concave structure.

[0032] The straightening assembly 200 in this embodiment includes a straightening fixed plate 210, a straightening movable plate 220 and a second driving member 230 located directly below the heat sealing assembly 100. The straightening movable plate 220 moves in a direction approaching or away from the straightening fixed plate 210. The second driving member 230 is connected to the straightening movable plate 220 to drive the straightening movable plate 220 to move. A straightening gap for limiting the packaging bag is formed between the straightening fixed plate 210 and the straightening movable plate 220.

[0033] This embodiment also includes two chucks 300, and the two chucks 300 each include a fixed clamp block 310 and a movable clamp block 320 installed on the vacuum packaging machine M. The movable clamp block 320 is slidably connected to the vacuum packaging machine M in a direction approaching or moving away from the fixed clamp block 310. The two chucks 300 are used to clamp the two sides of the bag opening.

[0034] This embodiment also includes a positioning component 400, which includes a pressure block 410 and a spring 420. The pressure block 410 is arranged between the fixed block 111 and the movable block 121, and is located on the side pointed by the line between the multiple protrusions or recessed parts. The pressure block 410 is connected to the movable block 121 via the spring 420 to fix the bag opening of the packaging bag.

[0035] It is understandable that the positioning assembly 400 can replace the clamp 300. Specifically, the number of the pressing block 410 and the number of the spring 420 are both two, and the two pressing blocks 410 are arranged along the extension direction parallel to the protrusion or the recessed portion to fix the two sides of the bag opening of the packaging bag. When the moving block 121 moves close to the fixed block 111, the two pressing blocks 410 can press the two sides of the bag opening of the packaging bag, so that the vacuum packaging machine M can perform vacuum processing on the packaging bag.

[0036] To prevent the protrusion on the fixed block 111 from being unable to move into the recess on the movable block 121 , in one embodiment, a mounting groove 123 is formed on the movable block 121 , the spring 420 is built into the mounting groove 123 , and the pressing block 410 can move to a position built into the mounting groove 123 .

[0037] In one embodiment, a groove 113 is formed on the fixed block 111 , the protrusion and the recess on the fixed block 111 are built into the groove 113 , and the protrusion and the groove 113 on the movable block 121 can move into the groove 113 .

[0038] like Figure 4-5As shown, the present embodiment also includes a sensing component 500, which includes a pressure sensor 510 and a power supply 520. The pressure sensor 510 is built into a circular hole formed on the fixed block 111 and is arranged opposite to the pressure block 410. The power supply 520 is installed on a side of the fixed block 111 away from the movable block 121. The power supply 520 is electrically connected to the pressure sensor 510. The power supply 520 is connected to the first electric heating block 112 and the second electric heating block 122. The power supply 520 controls the operation of the first electric heating block 112 and the second electric heating block 122 through the pressure value detected by the pressure sensor 510.

[0039] When the pressing block 410 is in contact with the pressure sensor 510, the fixed block 111 is not in contact with the movable block 121, and the power supply 520 supplies power to the first electric heating block 112 and the second electric heating block 122, and the first electric heating block 112 and the second electric heating block 122 are in a preheating state; when the fixed block 111 continues to move until it is in contact with the movable block 121, the pressure detected by the pressure sensor 510 vertically reaches the threshold value, and the power supply 520 supplies power to the first electric heating block 112 and the second electric heating block 122, and the first electric heating block 112 and the second electric heating block 122 are in a heat-sealed state; when the fixed block 111 moves away from the movable block 121, the device pressing block 410 and the pressure sensor 510 are spaced apart, and the power supply 520 cuts off power to the first electric heating block 112 and the second electric heating block 122.

[0040] Compared with the prior art: the packaging bag is placed between the straightening fixed plate 210 and the straightening movable plate 220, and the movable heat sealing member 120 moves in a direction close to the fixed heat sealing member 110 to achieve heat sealing of the bag opening of the packaging bag. At the same time, the straightening movable plate 220 moves in a direction close to the straightening fixed plate 210 to fix the packaging bag therebetween, which can effectively prevent the packaging bag from tilting and ensure the normal progress of the heat sealing process.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A heat sealing device for packaging, characterized in that: A heat-sealing component, comprising a fixed heat-sealing component and a movable heat-sealing component, wherein the fixed heat-sealing component comprises a fixed block and a first electric heating block, wherein the first electric heating block is connected to an external power source for generating heat, and the movable heat-sealing component comprises a movable block and a second electric heating block, wherein the movable block moves in a direction approaching or away from the fixed block, wherein the second electric heating block is connected to an external power source for generating heat, and the first electric heating block and the second electric heating block are fixedly connected to the fixed block and the movable block on opposite sides thereof; The straightening assembly includes a straightening fixed plate, a straightening movable plate and a second driving member located directly below the heat sealing assembly. The straightening movable plate moves in a direction approaching or away from the straightening fixed plate. The second driving member is connected to the straightening movable plate to drive the straightening movable plate to move. A straightening gap for limiting the packaging bag is formed between the straightening fixed plate and the straightening movable plate.

2. The heat sealing device for packaging according to claim 1, characterized in that: A plurality of protrusions and a plurality of recesses arranged alternately are formed on opposite sides of the first electric heating block and the second electric heating block, and the plurality of protrusions on the first electric heating block can be sequentially inserted into the plurality of recesses on the second electric heating block, and the plurality of protrusions on the second electric heating block can be sequentially inserted into the plurality of recesses on the first electric heating block.

3. The heat sealing device for packaging according to claim 2, characterized in that: The plurality of protrusions and the plurality of recesses are staggered and connected to form a tooth-shaped structure, and the width of the tooth-shaped structure is greater than the width of the bag opening of the packaging bag.

4. The heat sealing device for packaging according to claim 2, characterized in that: The protrusion is a V-shaped tip structure, and the depression is a V-shaped concave structure.

5. The heat sealing device for packaging according to claim 2, characterized in that: The raised portion is an arc-shaped outwardly convex structure, and the recessed portion is an arc-shaped inwardly concave structure.

6. The heat sealing device for packaging according to claim 2, characterized in that: It also includes a positioning component, which includes a pressure block and a spring. The pressure block is arranged between the fixed block and the movable block and is located on the side pointed by the line between the plurality of protrusions or recessed portions. The pressure block is connected to the movable block via the spring to fix the bag opening of the packaging bag.

7. The heat sealing device for packaging according to claim 6, characterized in that: The number of the pressing blocks and the number of the springs are both two, and the two pressing blocks are arranged along an extension direction parallel to the protruding portion or the recessed portion to fix the two sides of the bag opening of the packaging bag.

8. The heat sealing device for packaging according to claim 6, characterized in that: The moving block is formed with a mounting groove, the spring is built in the mounting groove, and the pressing block can move to a position built in the mounting groove.

9. The heat sealing device for packaging according to claim 6, characterized in that: A groove is formed on the fixed block, the raised portion and the recessed portion on the fixed block are built into the groove, and the raised portion and the groove on the movable block can move into the groove.

10. The heat sealing device for packaging according to claim 6, characterized in that: It also includes a sensing component, which includes a pressure sensor and the power supply. The pressure sensor is built into a circular hole formed on the fixed block and is arranged opposite to the pressure block. The power supply is installed on a side of the fixed block away from the movable block. The power supply is electrically connected to the pressure sensor. The power supply is connected to the first electric heating block and the second electric heating block. The power supply controls the action of the first electric heating block and the second electric heating block through the pressure value detected by the pressure sensor.

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