Heat treatment packaging bag sealing machine

By designing a heat treatment packaging bag sealing machine including a conveying mechanism and a sealing mechanism, the problem of insufficient sealing speed, quality and adaptability in the prior art is solved, and efficient and excellent quality sealing treatment is achieved, and packaging of different sizes is adapted to bag.

CN222496883UActive Publication Date: 2025-02-18SHANGHAI FANGXING PACKAGING MASCH CO LTD
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Patent Information

Application Number
CN202421385192.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-18
Publication Date
2025-02-18
Estimated Expiration
2034-06-18

AI Technical Summary

Technical Problem

The existing heat treatment packaging bag sealing machines have limitations in terms of sealing speed, sealing quality, and packaging bag size adaptability, especially the problem of adjustment difficulties in sealing packaging bags of different sizes.

Method used

A heat treatment packaging bag sealing machine including a conveying mechanism and a sealing mechanism is designed. The conveying mechanism drives the first threaded rod to rotate through the first driving motor, driving the moving block to realize the conveying of the packaging bag; the sealing mechanism uses heat treatment to achieve the sealing through the combination of the sealing frame, the sealing moving plate, the sealing strip and the power supply module, and then the sealing mechanism uses heat treatment to achieve the sealing and through The lifting and clamping components are suitable for packaging bags of different sizes.

Benefits of technology

It realizes efficient and high-quality packaging bag sealing, which can adapt to packaging bags of different sizes, improves sealing efficiency and quality, and reduces cost losses.

✦ Generated by Eureka AI based on patent content.

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    Figure CN222496883U_ABST
Patent Text Reader

Abstract

The utility model discloses a heat treatment packaging bag sealing machine which comprises a base, a conveying mechanism and a sealing mechanism. The conveying mechanism comprises a moving block, a first threaded rod and a first driving motor, the first driving motor drives the first threaded rod to rotate so as to drive the moving block to move along the moving groove, and a packaging bag to be sealed is placed at the upper end of the moving block and moves to a sealing mechanism operation area in the middle of the base along with the moving block; the sealing mechanism comprises a sealing frame, sealing moving plates, a sealing strip and a power module, the power module provides electricity for a heating wire arranged in the sealing strip to achieve heating of the heating wire, and meanwhile a driving assembly arranged at the upper end of the sealing frame drives the sealing moving plates on the two sides to get close to each other; and then the packaging bag is sealed through heat treatment, the sealing efficiency is improved, sealing and pressing are conducted through the threaded rod, the sealing quality is better guaranteed, and the cost loss is reduced.
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Description

Technical Field

[0001] The utility model relates to the technical field of packaging equipment, in particular to a heat treatment packaging bag sealing machine. Background Art

[0002] With the rapid development of my country's economy, the packaging industry is increasingly widely used in various fields, especially heat treatment packaging bag sealing machines. In many industries such as food, medicine, and daily chemicals, the packaging quality of products is directly related to the storage, transportation, and use safety of products, so the requirements for packaging and sealing technology are getting higher and higher.

[0003] At present, the main heat treatment packaging bag sealing machines on the market include high-frequency sealing, constant temperature hot pressure sealing and impulse sealing. High-frequency sealing uses high frequency to bond the bubble shells together to form double bubble shell packaging; constant temperature hot pressure sealing is to select appropriate heat sealing materials and heat sealing parameters when the heat seal of the packaging bag is most likely to leak, reduce the scrap rate of the production line, and improve the overall barrier performance of the packaging; impulse sealing uses a special resistance wire to directly or indirectly press on the sealing of the packaging container, instantly energize and heat it to make it sealed.

[0004] However, the existing sealing machines still have certain limitations in terms of sealing speed, sealing quality, and adaptability to the size of packaging bags. At present, there is a problem of difficulty in adjusting the sealing process for packaging bags of different sizes. Therefore, it is of great practical significance to study a high-efficiency, high-quality, and widely adaptable heat treatment packaging bag sealing machine. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model discloses a heat treatment packaging bag sealing machine to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a heat treatment packaging bag sealing machine, comprising a base, a conveying mechanism located inside the base, and a sealing mechanism located in the middle of the base;

[0007] The conveying mechanism includes a moving block, a first threaded rod, and a first driving motor. A moving groove is provided on the upper end surface of the base, the moving block is located inside the moving groove, and the moving block moves smoothly inside the moving groove. The first threaded rod is located inside the moving groove, and two ends of the first threaded rod are respectively rotatably connected to two ends of the moving groove. The first driving motor is located on an outer wall of one side of the base, and an output end of the first driving motor is connected to one end of the first threaded rod. A first threaded hole is provided on the side wall of the moving block, and the first threaded hole cooperates with the first threaded hole. The first driving motor drives the first threaded rod to rotate, thereby driving the moving block to move along the moving groove. The packaging bag to be sealed is placed on the upper end of the moving block and follows the moving block to move to the sealing mechanism operation area in the middle of the base.

[0008] The sealing mechanism includes a sealing frame, a sealing movable plate, a sealing strip and a power module. Support columns are respectively provided on both sides of the base. The sealing frame is located between the support columns on both sides, and the two sides of the sealing frame are respectively connected to the inner wall surfaces of the support columns in a sliding manner. The sealing frame includes fixed plates symmetrically arranged on both sides, and the fixed plates are connected by symmetrically arranged connecting rods. The sealing movable plates are symmetrically arranged on both sides of the sealing frame, and circular holes are respectively arranged on both sides of the wall surface of the sealing movable plate, and the circular holes are respectively fitted with the connecting rods. The sealing movable plate moves smoothly on the connecting rods. The sealing strip is located at the lower end of the sealing movable plate near the inner wall surface, and the power module is located at the lower end of the sealing movable plate near the outer wall surface, and the two are connected by an arranged electric wire. The power module is used to provide electricity to the electric heating wire arranged inside the sealing strip, and a high-temperature cloth is arranged on the periphery to realize the heating of the electric heating wire. At the same time, the driving assembly arranged at the upper end of the sealing frame is used to drive the sealing movable plates on both sides to approach each other, so as to realize the sealing of the packaging bag through heat treatment.

[0009] Preferably, the driving assembly includes a second driving motor, a first bevel gear, a second bevel gear and a second threaded rod, a long plate is provided at the upper end of the sealing frame, the second driving motor is located on the middle upper surface of the long plate, and the lower end of the second driving motor extends to the lower end of the long plate and is connected to the first bevel gear, the second threaded rod is respectively located on both sides of the lower end of the long plate, and the outer end of the second threaded rod is rotatably connected to the inner wall of the fixed plate, and the inner end is respectively connected to the second bevel gear, the first bevel gear is respectively meshed with the second bevel gears on both sides, and a second threaded hole is provided on the middle wall of the sealing movable plate, and the sealing movable plates on both sides are respectively meshed with the second threaded rod through the second threaded hole, and then the first bevel gear and the second bevel gear are driven to rotate by the second driving motor, and the sealing movable plates are driven to squeeze each other when the packaging bag reaches the sealing area.

[0010] Preferably, the threads of the second threaded rods on both sides rotate in opposite directions.

[0011] Preferably, a lifting assembly is provided inside the support column, and the lifting assembly includes a lifting block, a third threaded rod and a third driving motor. A lifting groove is provided on the inner wall of the support column, and the lifting blocks are respectively located on the outer wall of the fixed plate, and the third threaded rod is vertically located in the lifting groove. The third driving motor is located on the upper end wall of the support column, and the output end of the third driving motor is connected to the upper end of the third threaded rod. The lifting block is inserted in the lifting groove, and a third threaded hole is provided on the wall of the lifting block. The third threaded rod is driven to rotate by the third driving motor, thereby driving the lifting block to move in the lifting groove, and driving the sealing frame to move along the support column, and then the lifting and lowering are adjusted according to the actual height of the packaging bag opening.

[0012] Preferably, a clamping assembly is provided on the upper end of the movable plate, and the clamping assembly includes a clamping plate, a sliding block and a spring. Sliding grooves are respectively provided on both sides of the upper end surface of the movable block. The clamping plates are respectively located on both sides of the upper end of the movable plate, and the sliding block is located at the lower end of the clamping plate. The sliding block moves smoothly in the sliding groove. The spring is located inside the sliding groove, and one end of the spring is connected to the outer wall of the sliding groove, and the other end is connected to the outer wall of the sliding block. The sliding block is pushed by the spring to move toward the inside of the movable block, thereby clamping and fixing the packaging bag placed in the middle position of the clamping plate.

[0013] Preferably, the inner side of the clamping plate is in an arc shape, which facilitates clamping and fixing of the packaging bag.

[0014] Preferably, a pre-clamping plate is provided at the upper end of the clamping plate, and insertion rods are respectively provided on both sides of the lower end of the pre-clamping plate, and the insertion rods are respectively inserted into the insertion holes provided on both sides of the upper end of the clamping plate. According to the height position of the upper opening of the packaging bag, the height of the pre-clamping plate is adjusted so that the opening of the packaging bag is pre-pressed neatly.

[0015] Preferably, universal wheels are respectively provided at the lower end of the base, and the sealing machine is moved as a whole via the universal wheels.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. In the utility model, a conveying mechanism and a sealing mechanism are provided, and the first driving motor in the conveying mechanism drives the first threaded rod to rotate, thereby driving the moving block to move along the moving groove, and the packaging bag to be sealed is placed on the upper end of the moving block, and follows the moving block to move to the sealing mechanism operation area in the middle of the base, and the first bevel gear and the second bevel gear are driven to rotate by the second driving motor provided at the upper end of the sealing frame, and the sealing moving plates are driven to approach each other when the packaging bag reaches the sealing area by the second threaded rods with opposite spiral directions on both sides, and the heated sealing strips are squeezed against each other, and then the packaging bag is sealed by heat treatment, thereby efficiently realizing the heat treatment sealing of the packaging bag to be sealed, thereby improving the heat treatment sealing efficiency, and the sealing is pressed by the threaded rod, which further ensures the sealing quality and reduces the cost loss.

[0018] 2. In the utility model, a lifting assembly is provided, and the third threaded rod is driven to rotate by the third driving motor in the lifting assembly, thereby driving the lifting block to move in the lifting slot, and driving the sealing frame to move along the supporting column, and then the lifting and lowering are adjusted according to the actual height of the packaging bag opening, so that the utility model can be applied to the sealing processing of packaging bags of different sizes and heights, and is more widely applicable.

[0019] 3. In the utility model, a clamping assembly is provided, and the spring in the clamping assembly pushes the sliding block to move inwardly of the moving block, thereby clamping and fixing the packaging bag placed in the middle position of the clamping plate, making the sealing operation process more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0021] In the attached picture:

[0022] Figure 1 It is a schematic diagram of the overall structure of the sealing machine of the utility model;

[0023] Figure 2 It is a structural schematic diagram of the sealing mechanism of the utility model;

[0024] Figure 3 This is a structural schematic diagram of the sealing movable plate of the utility model from one perspective;

[0025] Figure 4 It is a structural schematic diagram of the drive assembly of the utility model;

[0026] Figure 5 It is a structural schematic diagram of the conveying mechanism of the utility model;

[0027] Figure 6This is a structural schematic diagram of the mobile block of the utility model from one perspective;

[0028] Figure 7 It is a structural schematic diagram of the clamping assembly of the utility model;

[0029] Numbers in the figure: 1, base; 101, moving groove; 102, supporting column; 103, lifting groove; 201, moving block; 202, first threaded rod; 203, first driving motor; 204, first threaded hole; 301, sealing moving plate; 302, sealing strip; 303, power module; 304, fixing plate; 305, connecting rod; 306, round hole; 307, wire; 308, long plate; 309, second threaded hole; 401, second driving motor; 402, first bevel gear; 403, second bevel gear; 404, second threaded rod; 501, lifting block; 502, third threaded rod; 503, third driving motor; 504, third threaded hole; 601, clamping plate; 602, sliding block; 603, spring; 604, sliding groove; 605, pre-clamping plate; 606, plug rod; 607, socket; 7, universal wheel. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0031] Example: Figure 1 As shown, a heat treatment packaging bag sealing machine comprises a base 1, a conveying mechanism located inside the base 1 and a sealing mechanism located in the middle of the base 1, and universal wheels 7 are respectively provided at the lower end of the base 1, and the sealing machine is moved as a whole by the universal wheels 7;

[0032] like Figure 5 and Figure 6As shown, the conveying mechanism includes a moving block 201, a first threaded rod 202, and a first driving motor 203. The upper end surface of the base 1 is provided with a moving groove 101, the moving block 201 is located inside the moving groove 101, and the moving block 201 moves smoothly inside the moving groove 101, the first threaded rod 202 is located inside the moving groove 101, and the two ends of the first threaded rod 202 are respectively rotatably connected with the two ends of the moving groove 101, the first driving motor 203 is located on the outer wall of one side of the base 1, and the output end of the first driving motor 203 is connected with one end of the first threaded rod 202, the side wall of the moving block 201 is provided with a first threaded hole 204, the first threaded hole 204 and the first threaded hole 204 cooperate with each other, the first driving motor 203 drives the first threaded rod 202 to rotate, and then drives the moving block 201 to move along the moving groove 101, and the packaging bag to be sealed is placed on the upper end of the moving block 201, and follows the moving block 201 to move to the sealing mechanism operation area in the middle of the base 1;

[0033] like Figure 2-Figure 5As shown, the sealing mechanism includes a sealing frame, a sealing movable plate 301, a sealing strip 302 and a power module 303. Support columns 102 are respectively provided on both sides of the base 1. The sealing frame is located between the support columns 102 on both sides. A lifting component is provided inside the support column 102. The lifting component includes a lifting block 501, a third threaded rod 502 and a third drive motor 503. A lifting groove 103 is provided on the inner wall of the support column 102. The lifting block 501 is respectively located on the outer wall of the fixed plate 304. The third threaded rod 502 is vertically located in the lifting groove 1 03, the third driving motor 503 is located on the upper wall of the support column 102, and the output end of the third driving motor 503 is connected to the upper end of the third threaded rod 502, the lifting block 501 is inserted into the lifting slot 103, and the wall of the lifting block 501 is provided with a third threaded hole 504, the third driving motor 503 drives the third threaded rod 502 to rotate, thereby driving the lifting block 501 to move in the lifting slot 103, and driving the sealing frame to move along the support column 102, and then adjusting the lifting according to the actual height of the packaging bag opening;The two sides of the sealing frame are respectively connected to the inner wall of the support column 102 by sliding, the sealing frame includes fixed plates 304 symmetrically on both sides, and the fixed plates 304 are connected by symmetrically arranged connecting rods 305, the sealing movable plate 301 is symmetrically located on both sides of the sealing frame, and the two sides of the sealing movable plate 301 wall surface are respectively provided with circular holes 306, the circular holes 306 are respectively fitted with the connecting rods 305, the sealing movable plate 301 moves smoothly on the connecting rods 305, and the sealing strip 302 is located on the sealing movable plate 301. The lower end of the movable plate 301 is close to the inner wall, and the power module 303 is located on the wall of the lower end of the sealing movable plate 301 close to the outer wall, and the two are connected by a wire 307. The power module 303 provides electricity to the heating wire inside the sealing strip 302 to achieve the heating of the heating wire. At the same time, the driving component provided at the upper end of the sealing frame drives the sealing movable plates 301 on both sides to approach each other, and then the packaging bag is sealed by heat treatment. The driving component includes a second driving motor 401, a first bevel gear 402, a second bevel gear 403 and a second threaded rod 404, a long plate 308 is provided at the upper end of the sealing frame, the second drive motor 401 is located on the middle upper surface of the long plate 308, and the lower end of the second drive motor 401 extends to the lower end of the long plate 308 and is connected to the first bevel gear 402, the second threaded rod 404 is respectively located on both sides of the lower end of the long plate 308, the threads of the second threaded rod 404 on both sides rotate in opposite directions, and the outer end of the second threaded rod 404 rotates in phase with the inner wall surface of the fixed plate 304 The inner ends are connected to the second bevel gear 403 respectively, the first bevel gear 402 is meshed with the second bevel gears 403 on both sides respectively, the middle wall of the sealing movable plate 301 is provided with a second threaded hole 309, the sealing movable plates 301 on both sides are meshed with the second threaded rod 404 respectively through the second threaded hole 309, and then the first bevel gear 402 and the second bevel gear 403 are driven to rotate by the second driving motor 401, and the sealing movable plates 301 are driven to squeeze each other when the packaging bag reaches the sealing area. ;

[0034] Among them, Figure 7As shown, a clamping assembly is provided at the upper end of the movable plate, and the clamping assembly includes a clamping plate 601, a sliding block 602 and a spring 603. The upper end surface of the movable block 201 is provided with sliding grooves 604 on both sides, and the clamping plates 601 are respectively located on both sides of the upper end of the movable plate. The inner side of the clamping plate 601 is in an arc shape, which is convenient for clamping and fixing the packaging bag and is not easy to slip. The sliding block 602 is located at the lower end of the clamping plate 601, and the sliding block 602 moves smoothly in the sliding groove 604. The spring 603 is located inside the sliding groove 604, and one end of the spring 603 is connected to the sliding groove The outer wall of 604 is connected, and the other end is connected to the outer wall of the sliding block 602. The sliding block 602 is pushed by the spring 603 to move inward of the moving block 201, so as to clamp and fix the packaging bag placed in the middle position of the clamping plate 601. A pre-clamping plate 605 is provided on the upper end of the clamping plate 601, and rods 606 are respectively provided on both sides of the lower end of the pre-clamping plate 605. The rods 606 are respectively inserted into the sockets 607 provided on both sides of the upper end of the clamping plate 601. According to the height position of the upper opening of the packaging bag, the height of the pre-clamping plate 605 is adjusted to make the opening of the packaging bag be pre-pressed.

[0035] When in use, first place the packaging bag to be sealed on the upper end of the moving block 201, then push the sliding block 602 to move inwardly of the moving block 201 through the spring 603, so as to clamp and fix the packaging bag placed in the middle position of the clamping plate 601, and adjust the height of the pre-clamping plate 605 according to the height position of the opening of the upper end of the packaging bag, so that the opening of the packaging bag is pre-pressed and aligned, and at this time, the first threaded rod 202 is driven to rotate by the first driving motor 203, thereby driving the moving block 201 to move along the moving groove 101, and the packaging bag to be sealed is placed on the upper end of the moving block 201, and moves with the moving block 201 to the sealing mechanism operation area in the middle of the base 1, and is clamped and fixed through the two The lifting assembly on the side adjusts the height of the sealing frame, and drives the third threaded rod 502 to rotate through the third driving motor 503, thereby driving the lifting block 501 to move in the lifting slot 103, and driving the sealing frame to move along the support column 102, and then the lifting and lowering are adjusted according to the actual height of the packaging bag opening. The first bevel gear 402 and the second bevel gear 403 are driven to rotate by the second driving motor 401 provided at the upper end of the sealing frame, and the sealing movable plate 301 is driven to approach each other when the packaging bag reaches the sealing area through the second threaded rod 404 with opposite spiral directions on both sides, and the heated sealing strips 302 are squeezed against each other, and then the packaging bag is sealed through heat treatment.

[0036] Finally, it should be noted that the above description is only a preferred example of the present utility model and is not intended to limit the present utility model. Although the present utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A heat treatment packaging bag sealing machine, characterized in that: It comprises a base, a conveying mechanism located inside the base, and a sealing mechanism located in the middle of the base; The conveying mechanism includes a moving block, a first threaded rod, and a first driving motor. A moving groove is provided on the upper end surface of the base, the moving block is located inside the moving groove, and the moving block moves smoothly inside the moving groove. The first threaded rod is located inside the moving groove, and two ends of the first threaded rod are respectively rotatably connected to two ends of the moving groove. The first driving motor is located on an outer wall of one side of the base, and an output end of the first driving motor is connected to one end of the first threaded rod. A first threaded hole is provided on the side wall of the moving block, and the first threaded hole cooperates with the first threaded hole. The first driving motor drives the first threaded rod to rotate, thereby driving the moving block to move along the moving groove. The packaging bag to be sealed is placed on the upper end of the moving block and follows the moving block to move to the sealing mechanism operation area in the middle of the base. The sealing mechanism includes a sealing frame, a sealing movable plate, a sealing strip and a power module. Support columns are respectively provided on both sides of the base. The sealing frame is located between the support columns on both sides, and the two sides of the sealing frame are respectively connected to the inner wall surfaces of the support columns in a sliding manner. The sealing frame includes fixed plates symmetrically provided on both sides, and the fixed plates are connected by symmetrically provided connecting rods. The sealing movable plates are symmetrically located on both sides of the sealing frame, and circular holes are respectively provided on both sides of the wall surface of the sealing movable plate, and the circular holes are respectively fitted with the connecting rods. The sealing movable plate moves smoothly on the connecting rods. The sealing strip is located at the lower end of the sealing movable plate near the inner wall surface, and the power module is located at the lower end of the sealing movable plate near the outer wall surface, and the two are connected by provided electric wires. The power module is used to provide electricity to the electric heating wire provided inside the sealing strip to realize the heating of the electric heating wire. At the same time, the driving assembly provided at the upper end of the sealing frame is used to drive the sealing movable plates on both sides to approach each other, so as to realize the sealing of the packaging bag through heat treatment.

2. A heat treatment packaging bag sealing machine according to claim 1, characterized in that: The driving assembly includes a second driving motor, a first bevel gear, a second bevel gear and a second threaded rod. A long plate is provided at the upper end of the sealing frame. The second driving motor is located on the middle upper surface of the long plate, and the lower end of the second driving motor extends to the lower end of the long plate and is connected to the first bevel gear. The second threaded rod is respectively located on both sides of the lower end of the long plate, and the outer end of the second threaded rod is rotatably connected to the inner wall of the fixed plate, and the inner end is respectively connected to the second bevel gear. The first bevel gear is respectively meshed with the second bevel gears on both sides. A second threaded hole is provided on the middle wall of the sealing movable plate, and the sealing movable plates on both sides are respectively meshed with the second threaded rod through the second threaded hole, and then the first bevel gear and the second bevel gear are driven to rotate by the second driving motor, and the sealing movable plates are driven to squeeze each other when the packaging bag reaches the sealing area.

3. A heat treatment packaging bag sealing machine according to claim 2, characterized in that: The threads of the second threaded rods on both sides rotate in opposite directions.

4. The heat treatment packaging bag sealing machine according to claim 1, characterized in that: A lifting assembly is provided inside the support column, and the lifting assembly includes a lifting block, a third threaded rod and a third driving motor. A lifting groove is provided on the inner wall of the support column, and the lifting blocks are respectively located on the outer wall of the fixed plate, and the third threaded rod is vertically located in the lifting groove. The third driving motor is located on the upper end wall of the support column, and the output end of the third driving motor is connected to the upper end of the third threaded rod. The lifting block is inserted in the lifting groove, and a third threaded hole is provided on the wall of the lifting block. The third threaded rod is driven to rotate by the third driving motor, thereby driving the lifting block to move in the lifting groove, and driving the sealing frame to move along the support column, and then the lifting and lowering are adjusted according to the actual height of the packaging bag opening.

5. The heat treatment packaging bag sealing machine according to claim 1, characterized in that: A clamping assembly is provided at the upper end of the movable plate, and the clamping assembly includes a clamping plate, a sliding block and a spring. Sliding grooves are respectively provided on both sides of the upper end surface of the movable block. The clamping plates are respectively located on both sides of the upper end of the movable plate, and the sliding block is located at the lower end of the clamping plate. The sliding block moves smoothly in the sliding groove. The spring is located inside the sliding groove, and one end of the spring is connected to the outer wall of the sliding groove, and the other end is connected to the outer wall of the sliding block. The sliding block is pushed by the spring to move toward the inside of the movable block, thereby clamping and fixing the packaging bag placed in the middle position of the clamping plate.

6. The heat treatment packaging bag sealing machine according to claim 5, characterized in that: The inner side of the clamping plate is in an arc shape.

7. The heat treatment packaging bag sealing machine according to claim 6, characterized in that: A pre-clamping plate is provided at the upper end of the clamping plate, and insertion rods are respectively provided on both sides of the lower end of the pre-clamping plate. The insertion rods are respectively inserted into the insertion holes provided on both sides of the upper end of the clamping plate. According to the height position of the upper end opening of the packaging bag, the height of the pre-clamping plate is adjusted so that the opening of the packaging bag is pre-pressed neatly.

8. The heat treatment packaging bag sealing machine according to claim 1, characterized in that: Universal wheels are respectively arranged at the lower end of the base, and the sealing machine is moved as a whole via the universal wheels.