A vacuum heat sealing machine

Abstract

This utility model discloses a vacuum heat sealing machine, including a machine body, and further comprising: a through groove formed in the middle of the front end of the machine body; a sliding plate slidably arranged on the back of the through groove along the vertical direction of the machine body; a fixed clamping plate fixedly connected to the front end of the sliding plate and slidably engaged with the through groove, the fixed clamping plate having a groove for accommodating a heating strip; a movable clamping plate engaged with the groove and movable in a direction perpendicular to the groove; and a vacuuming assembly disposed at the upper end of the machine body. In this utility model, through a multi-degree-of-freedom electric adjustment structure, integrated control and spatial adaptability adjustment of the heat sealing clamping position, pressure, and vacuuming assembly movement are achieved, thereby improving the equipment's adaptability to packaging bags of different sizes.

Description

Technical Field

[0001] This utility model relates to the field of vacuum heat sealing machine technology, and in particular to a vacuum heat sealing machine. Background Technology

[0002] In a bag packaging machine, after the packaging bag is filled with material, it needs to pass through a heat-sealing mechanism to be vacuumed before being heat-sealed. For example, Chinese utility model patent CN222347445U discloses "a clamping, heat-sealing, and vacuuming integrated machine for nylon granule packaging bags, including a machine body and a first cylinder, a second cylinder, a movable clamping rod, a fixed clamping plate, a heating strip, a third cylinder, and a vacuuming flat tube mounted on the machine body; the first and second cylinders are respectively arranged in the front-back direction, the movable clamping rod and the fixed clamping plate are respectively arranged in the left-right direction, the cylinder rods of the first and second cylinders extend forward to drive the movable clamping rod to move back and forth, and the fixed clamping plate is located on the movable clamping rod." The heating strip is installed on the front side of the fixed clamping plate. Driven by the first and second cylinders, the movable clamping rod can move backward towards the fixed clamping plate to clamp and heat-seal the opening of the nylon granule packaging bag. The third cylinder is vertically positioned above the middle of the fixed clamping plate. The cylinder rod of the third cylinder extends downward and connects to the upper end of the vacuum tube. The vacuum tube is vertically positioned, and its lower end has a vacuum port. Driven by the third cylinder, the vacuum tube can extend downward into the nylon granule packaging bag to vacuum it.

[0003] However, the position and size of the heat-sealing structure in this technical solution are fixed, and the clamping heat-sealing area between the movable clamping rod and the fixed clamping plate is not adjustable. This means that it can only adapt to packaging bags within a specific width or size range. When it is necessary to package packaging bags of different specifications (especially those with different sealing position requirements), the equipment cannot automatically adjust the lateral spacing or height position of the heat-sealing components. It is necessary to manually replace the clamps, reposition the heating strip, or adjust the mechanical structure to achieve adaptation, which is cumbersome and time-consuming. Utility Model Content

[0004] The purpose of this utility model is to provide a vacuum heat sealing machine in order to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A vacuum heat sealing machine includes a machine body and further includes:

[0007] A through-slot is located in the middle of the front end of the machine body;

[0008] A sliding plate is vertically arranged on the back of the through groove along the machine body;

[0009] A fixed clamp is fixedly connected to the front end of the sliding plate and slidably engages with the through groove. The fixed clamp is provided with a groove to accommodate the heating strip.

[0010] The movable clamp, which mates with the groove, can move in a direction perpendicular to the groove;

[0011] The vacuum assembly is located at the top of the machine body.

[0012] As a further description of the above technical solution:

[0013] Also includes:

[0014] The tray is fixedly connected to the back of the sliding plate;

[0015] The first electric telescopic rod is fixedly installed on both sides of the support plate. The free end of the first electric telescopic rod passes through the sliding plate and the fixed clamping plate and is fixedly connected to the movable clamping plate.

[0016] As a further description of the above technical solution:

[0017] Also includes:

[0018] The third electric telescopic rod is fixedly installed at the bottom of the machine body, and the free end of the third electric telescopic rod is fixedly connected to the sliding plate;

[0019] The slide rails are fixedly connected to both sides of the machine body;

[0020] The slide block is fixedly connected to both sides of the sliding plate, and the slide block slides in conjunction with the slide rail.

[0021] As a further description of the above technical solution:

[0022] Also includes:

[0023] The bottom frame is fixedly connected to the bottom front side of the machine body;

[0024] The rollers are rotatably mounted on the base frame and arranged in a linear array along the length of the base frame.

[0025] As a further description of the above technical solution:

[0026] The vacuum pumping assembly includes:

[0027] The vacuum pump is fixedly mounted on the machine body;

[0028] The negative pressure tube is fixedly connected at one end to the output end of the vacuum pump.

[0029] A vacuum tube is vertically and movably arranged between a fixed clamping plate and a movable clamping plate, with the other end of the vacuum tube being fixedly connected to the negative pressure tube.

[0030] As a further description of the above technical solution:

[0031] The vacuum pumping assembly also includes:

[0032] The second electric telescopic rod is fixedly installed on the machine body, and the free end of the second electric telescopic rod is fixedly connected to the top of the vacuum tube.

[0033] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0034] 1. In this utility model, the third electric telescopic rod drives the sliding plate to move up and down in the vertical direction, thereby driving the fixed clamping plate and the movable clamping plate to rise and fall as a whole. The heat sealing starting height can be dynamically adjusted according to the height of the packaging bag or the sealing position requirements, adapting to packaging bags of different lengths, solving the problem of fixed heat sealing position, and improving the versatility of the equipment.

[0035] 2. In this utility model, the slide rail is fixedly connected to both sides of the machine body, and the slide block is fixedly connected to both sides of the sliding plate. The slide block and the slide rail slide together to form a high-precision vertical guiding system, which ensures that the sliding plate is stable, without deflection or jamming during the lifting process, and improves the heat sealing alignment accuracy. Attached Figure Description

[0036] Figure 1 A three-dimensional structural schematic diagram of a vacuum heat sealing machine according to an embodiment of the present utility model is shown;

[0037] Figure 2 It shows Figure 1 Enlarged structural diagram at point A;

[0038] Figure 3 A schematic diagram of a partial internal structure of a vacuum heat sealing machine according to an embodiment of the present invention is shown;

[0039] Figure 4 It shows Figure 3 A magnified structural diagram at point B in the middle.

[0040] Legend:

[0041] 1. Machine body; 101. Through groove; 2. Roller shaft; 3. Sliding plate; 4. Fixed clamping plate; 5. Movable clamping plate; 6. First electric telescopic rod; 7. Vacuum flat tube; 8. Negative pressure pipe; 9. Second electric telescopic rod; 10. Base frame; 11. Vacuum pump; 12. Support plate; 13. Third electric telescopic rod; 14. Slide rail; 15. Slide seat. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0043] Please see Figure 1-4 This utility model provides a technical solution: a vacuum heat sealing machine, including a body 1, with a through groove 101 in the middle of the front end of the body 1. A sliding plate 3 is vertically slidably arranged on the back of the through groove 101 along the body 1. The sliding plate 3 is the main support platform for the heat sealing assembly, and its vertical position can be adjusted by an external drive mechanism, thereby driving the entire heat sealing unit to move up and down. The sealing position can be flexibly adjusted according to the height of the packaging bag, solving the problem of fixed heat sealing position and improving the versatility of the equipment. A fixing clamp 4 is fixedly connected to the front end of the sliding plate 3 and slides in cooperation with the through groove 101 to ensure... The movement is smooth. The fixed clamping plate 4 has a groove for accommodating the heating strip (not shown in the figure, but it is a standard configuration). The heating strip heats up after being energized to achieve heat sealing. The movable clamping plate 5 cooperates with the groove and can move along the direction perpendicular to the length of the groove (i.e., laterally) to achieve clamping / releasing action. It is used to clamp the opening of the packaging bag together with the fixed clamping plate 4 and complete the heat-melting seal with the heating strip. The bottom frame 10 is fixedly connected to the bottom side of the front end of the machine body 1. The roller shaft 2 is rotatably mounted on the bottom frame 10 and arranged in a linear array along the length of the bottom frame 10. The vacuum assembly is set at the upper end of the machine body 1.

[0044] Specifically, such as Figure 3 As shown, the pallet 12 is fixedly connected to the back of the sliding plate 3 to support the first electric telescopic rod 6 and enhance structural stability. The first electric telescopic rod 6 is fixedly installed on both sides of the pallet 12. The free end of the first electric telescopic rod 6 passes through the sliding plate 3 and the fixed clamping plate 4 and is fixedly connected to the movable clamping plate 5, driving the movable clamping plate 5 to move laterally, thereby realizing automatic clamping and release of the packaging bag opening, replacing the traditional cylinder, and has the advantages of high control precision and fast response.

[0045] Specifically, such as Figure 3 and Figure 4As shown, the third electric telescopic rod 13 is fixedly installed at the bottom of the machine body 1. The free end of the third electric telescopic rod 13 is fixedly connected to the sliding plate 3, driving the sliding plate 3 to move up and down in the vertical direction, thereby driving the fixed clamping plate 4 and the movable clamping plate 5 to rise and fall as a whole. The heat sealing starting height can be dynamically adjusted according to the height of the packaging bag or the sealing position requirements to adapt to packaging bags of different lengths. The slide rail 14 is fixedly connected to both sides of the machine body 1, and the slide seat 15 is fixedly connected to both sides of the sliding plate 3. The slide seat 15 and the slide rail 14 slide together to form a high-precision vertical guiding system, ensuring that the sliding plate is stable, without deflection or jamming during the lifting process, and improving the heat sealing alignment accuracy.

[0046] Specifically, such as Figure 1 and Figure 3 As shown, the vacuum assembly includes: a vacuum pump 11 fixedly mounted on the machine body 1; one end of a negative pressure pipe 8 fixedly connected to the output end of the vacuum pump 11; a vacuum flat tube 7 vertically movably arranged between the fixed clamping plate 4 and the movable clamping plate 5; the other end of the vacuum flat tube 7 fixedly connected to the negative pressure pipe 8; and a vacuum port at the lower end of the vacuum flat tube 7, which can be inserted into the packaging bag for evacuation before or at the initial stage of clamping. The flat tube design facilitates arrangement in confined heat-sealing spaces, reducing interference with clamping actions. A second electric telescopic rod 9 is fixedly mounted on the machine body 1, and its free end is fixedly connected to the top of the vacuum flat tube 7, driving the vacuum flat tube 7 to move vertically up and down, controlling its insertion or withdrawal from the packaging bag. It automatically inserts into the bag before clamping, evacuates, withdraws before sealing, and completes heat sealing, with the entire process automated. The lifting and lowering of the vacuum flat tube 7 is independently controlled, allowing for precise coordination with the clamping and heat-sealing sequence, preventing it from being fused into the weld seam during sealing.

[0047] Working principle: In use, the sliding plate 3 is in the high position, the movable clamping plate 5 is open, the vacuum tube 7 is in the upper position, the packaging bag is placed in front of the fixed clamping plate 4, and the bag opening is aligned with the heat sealing area. The third electric telescopic rod 13 drives the sliding plate 3 to descend to the preset height to adapt to the current bag shape. The second electric telescopic rod 9 drives the vacuum tube 7 to move down and insert it into the packaging bag. The vacuum pump 11 starts and extracts the air from the bag through the negative pressure pipe 8 and the vacuum tube 7. The first electric telescopic rod 6 pushes the movable clamping plate 5 to move laterally and presses the bag opening tightly onto the heating strip. The heating strip heats up and completes the heat fusion seal. At the same time or slightly forward, the vacuum tube 7 is lifted up and withdraws from the bag opening to prevent it from being sealed into the weld. The movable clamping plate 5 is released, the sliding plate rises, and the equipment returns to the initial position to wait for the next cycle.

[0048] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A vacuum heat-sealing machine comprising a machine body (1), characterized in that, Also includes: A through slot (101) is provided at the middle of the front end of the body (1); The sliding plate (3) is vertically slidably arranged on the back of the through groove (101) along the body (1); A fixed clamp (4) is fixedly connected to the front end of the sliding plate (3) and slides in cooperation with the through groove (101). The fixed clamp (4) has a groove for accommodating the heating strip. The movable clamp (5) is fitted with the groove and can move in a direction perpendicular to the groove; The vacuum assembly is located at the upper end of the body (1).

2. A vacuum heat sealing machine according to claim 1, wherein Also includes: The tray (12) is fixedly connected to the back of the sliding plate (3); The first electric telescopic rod (6) is fixedly installed on both sides of the support plate (12). The free end of the first electric telescopic rod (6) passes through the sliding plate (3) and the fixed clamping plate (4) and is fixedly connected to the movable clamping plate (5).

3. A vacuum heat sealing machine according to claim 2, wherein Also includes: The third electric telescopic rod (13) is fixedly installed at the bottom of the machine body (1), and the free end of the third electric telescopic rod (13) is fixedly connected to the sliding plate (3); The slide rail (14) is fixedly connected to both sides of the body (1); The slide block (15) is fixedly connected to both sides of the sliding plate (3), and the slide block (15) slides in cooperation with the slide rail (14).

4. A vacuum heat sealing machine according to claim 3, characterized in that, Also includes: The bottom frame (10) is fixedly connected to the bottom front end of the body (1); The roller (2) is rotatably mounted on the base frame (10) and arranged in a linear array along the length of the base frame (10).

5. A vacuum heat sealing machine according to claim 4, characterized in that, The vacuum pumping assembly includes: A vacuum pump (11) is fixedly installed on the machine body (1); The negative pressure tube (8) is fixedly connected at one end to the output end of the vacuum pump (11); A vacuum tube (7) is vertically arranged between a fixed clamping plate (4) and a movable clamping plate (5), and the other end of the vacuum tube (7) is fixedly connected to the negative pressure tube (8).

6. A vacuum heat sealing machine according to claim 5, characterized in that, The vacuum pumping assembly also includes: The second electric telescopic rod (9) is fixedly installed on the body (1), and the free end of the second electric telescopic rod (9) is fixedly connected to the top of the vacuum tube (7).

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