Automatic sealing device for packaging bags

Abstract

The utility model provides a kind of automatic sealing device for packaging bag, it is related to packaging machinery technical field.The device includes fixed support, the driving device being set on support, two sealing components being symmetrically installed at the both ends of driving device, cutting assembly being equipped in one of sealing components, and heating block being set on two sealing components.Cutting groove is opened in heating block, and the cutting knife of cutting assembly can be inserted into opposite cutting groove in closing process, to realize the cutting of packaging bag.V-shaped protruding pressure block is equipped on pressure plate, can effectively hold packaging bag before sealing and cutting, to prevent sliding deviation.Two-way cylinder is used in driving device, and its two output ends are respectively connected with two side mounting plates, to realize synchronous opening and closing, to ensure that sealing pressure is uniform.Heating block surface is equipped with sealing line, to improve heat sealing strength.The device integrates heat sealing and cutting function, compact structure, coordinated action, accurate positioning, to effectively improve packaging efficiency and finished product qualification rate.

Description

Technical Field

[0001] This utility model relates to the field of packaging machinery technology, and in particular to an automatic sealing device for packaging bags. Background Technology

[0002] With the rapid development of automated packaging technology, the heat sealing and cutting processes of packaging bags have become crucial links in the production processes of industries such as food, pharmaceuticals, and daily necessities. Traditional packaging bag sealing devices typically use single-sided heating and unidirectional drive for heat sealing, while the cutting function relies on a separately set cutting mechanism, which suffers from problems such as dispersed structure, large space occupation, and asynchronous operation. In actual use, defects such as insecure sealing, cutting deviation, and packaging bag slippage leading to inaccurate sealing and cutting positions are prone to occur, affecting packaging quality and production efficiency. Utility Model Content

[0003] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide an automatic sealing device for packaging bags, which solves the problems of separation of sealing and cutting functions and asynchronous operation in the prior art.

[0004] To achieve the above and other related objectives, this utility model provides the following technical solution:

[0005] An automatic sealing device for packaging bags includes: a fixed bracket; a driving device disposed on the fixed bracket; two sealing components symmetrically disposed at both ends of the driving device, the driving device being capable of driving the two sealing components to move closer or further apart synchronously; a cutting component disposed on one of the sealing components; heating blocks symmetrically disposed on both sealing components, each heating block having a cutting groove, and a cutter disposed on the cutting component within the cutting groove; when the two sealing components are closed, the cutting component drives the cutter to cut the packaging bag located between the two heating blocks.

[0006] To achieve the above technical solution, the automatic sealing device for packaging bags of this utility model, in use, places the packaging bag to be sealed between two sealing components. After the drive device is started, it drives the sealing components on both sides to move closer synchronously, so that the two heating blocks clamp and heat the two sides of the packaging bag to achieve heat sealing. At the same time, the cutting component set on one of the sealing components is activated, driving the cutter on it to move along the direction of the cutting groove. When the two sealing components are completely closed, the cutter extends from the cutting groove of the heating block on this side and inserts into the corresponding cutting groove of the heating block on the opposite side, thereby cutting the packaging bag at the same time as heat sealing is completed. By symmetrically setting the cutting grooves on the two heating blocks and cooperating with the cutting component, the integrated operation of heat sealing and cutting is realized. It has the advantages of compact structure, coordinated action, synchronous sealing and cutting, and precise positioning, effectively improving packaging efficiency and sealing and cutting quality, while avoiding the problems of large space occupation and complex maintenance of traditional independent cutting mechanisms.

[0007] In one embodiment of the present invention, the sealing assembly includes a mounting plate, two mounting blocks symmetrically arranged on the mounting plate, a perforated plate arranged on the two mounting blocks, a pressure plate arranged on the perforated plate, and a heating block arranged on the pressure plate.

[0008] To achieve the above technical solution, the sealing assembly is fixed to the driving device via a mounting plate. Two mounting blocks are symmetrically arranged on the mounting plate for supporting and positioning subsequent structures. A perforated plate is placed between the two mounting blocks; its perforated design not only reduces the overall weight but also facilitates the layout and heat dissipation of internal wiring or air passages. A pressure plate is installed on the perforated plate to transmit pressure, uniformly distributing driving force during the sealing process. A heating block is located outside the pressure plate, directly contacting the packaging bag to achieve reliable sealing during heat pressing. This multi-layer modular structure design gives the sealing assembly good rigidity and thermal stability. Simultaneously, the clear division of labor among components and convenient assembly improve the maintainability and operational accuracy of the equipment, ensuring pressure uniformity and repeatability during the heat sealing process, thereby effectively improving sealing quality and overall machine reliability.

[0009] In one embodiment of the present invention, the cutting assembly includes a cutter, guide rods disposed at both ends of the cutter, a guide sleeve disposed on the mounting plate and through which the guide rods pass, a connecting plate connected between the two guide rods, and a cutting cylinder disposed on the connecting plate and whose output end is fixed on the mounting plate.

[0010] To achieve the above technical solution, the cutting assembly forms a stable linear guide structure by setting guide rods at both ends of the cutter and sliding the guide rods through the guide sleeves on the mounting plate; the connecting plate is fixed between the two guide rods to form a linkage frame to ensure synchronous movement of the cutter; the cutting cylinder is set on the connecting plate, and its piston rod is fixed on the mounting plate. When the cylinder is activated, the cylinder body moves with the connecting plate, thereby driving the cutter to reciprocate along the direction of the guide rods to achieve the cutting operation of the packaging bag.

[0011] In one embodiment of the present invention, each of the two sealing components has a corresponding pressing block on its pressing plate, and the pressing block has a plurality of V-shaped protrusions.

[0012] To achieve the above technical solution, each of the two sealing components has a corresponding pressing block on its pressing plate, and the surface of the pressing block has several V-shaped protrusions. When the sealing components on both sides close for heat sealing under the action of the driving device, the V-shaped protrusions first contact and press against the edge of the packaging bag to be sealed, and use the local high pressure generated by the V-shaped tip to achieve effective clamping of the packaging bag, preventing it from shifting or sliding during heat sealing or subsequent cutting.

[0013] In one embodiment of the present invention, the heating block is provided with sealing patterns, and the cutting groove is formed in the middle of the heating block in a vertical direction.

[0014] To achieve the above technical solution, the working surface of the heating block is provided with sealing patterns. When the sealing components on both sides are closed, the sealing patterns on the two heating blocks press against each other, forming a corresponding textured sealing area on the surface of the packaging bag. This not only increases the heat-sealing contact area and improves heat conduction efficiency, but also significantly enhances the tensile strength and sealing reliability of the seal. Simultaneously, a vertical groove is formed in the middle of the heating block, serving as a guide channel for the cutting blade's movement, ensuring precise embedding of the blade during the closing process and achieving stable cutting of the packaging bag. This structure integrates the sealing patterns and the cutting groove onto the same heating block, resulting in a reasonable layout and high functional integration. It ensures the continuity and uniformity of the heat-sealing area while avoiding blade deviation or jamming during cutting, thus improving the sealing and cutting synchronization accuracy and equipment operational stability.

[0015] In one embodiment of the present invention, the driving device is a bidirectional cylinder, and the two output ends of the bidirectional cylinder are respectively connected to the mounting plates on both sides.

[0016] To achieve the above technical solution, the driving device adopts a bidirectional cylinder, whose two output ends are respectively connected to the mounting plates of the sealing components on both sides. When the cylinder is started, the piston extends or retracts synchronously to both ends, directly pushing the mounting plates on both sides to drive the sealing components to move closer or further away synchronously, thereby realizing the clamping, sealing and resetting action of the packaging bag.

[0017] As described above, the automatic sealing device for packaging bags of this utility model has the following beneficial effects: By combining a heating block, a knife groove, a cutting component, and a bidirectional drive structure, this utility model achieves synchronous heat sealing and precise cutting of packaging bags, and has the advantages of compact structure, coordinated action, synchronous sealing and cutting, and accurate positioning; by setting a V-shaped protrusion on the pressure block, the packaging bag is effectively clamped to prevent slippage, improving the consistency of sealing and cutting; the knife groove and the cutter work together to achieve stable guidance, ensuring neat cuts; the bidirectional cylinder drives the sealing components on both sides to move synchronously, with balanced force and smooth operation; the overall device has high integration, reliable operation, and convenient maintenance, significantly improving packaging efficiency and sealing quality. Attached Figure Description

[0018] Figure 1 The diagram shown is a structural schematic of this utility model.

[0019] Figure 2 The diagram shows the structure of the sealing assembly.

[0020] Figure 3 The diagram shows the structure of the mounting plate and cutting assembly.

[0021] Component designation explanation

[0022] 1. Fixed bracket; 2. Drive device; 3. Heating block; 4. Knife groove; 5. Cutter; 6. Mounting plate; 7. Mounting block; 8. Hollow plate; 9. Pressure plate; 10. Cutter; 11. Guide rod; 12. Guide sleeve; 13. Connecting plate; 14. Cutting cylinder; 15. Pressure block; 16. V-shaped protrusion; 17. Sealing pattern. Detailed Implementation

[0023] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. It should be noted that, unless otherwise specified, the following embodiments and features can be combined with each other.

[0024] Please see Figures 1 to 3 This utility model provides an automatic sealing device for packaging bags, comprising: a fixed bracket 1; a driving device 2 disposed on the fixed bracket 1; two sealing components symmetrically disposed at both ends of the driving device 2, the driving device 2 being able to drive the two sealing components to move closer or further away synchronously; a cutting component disposed on one of the sealing components; heating blocks 3 symmetrically disposed on both sealing components, the heating blocks 3 having a cutting groove 4, and the cutting component having a cutter 105 placed in the cutting groove 4; when the two sealing components are closed, the cutting component drives the cutter 105 to cut the packaging bag located between the two heating blocks 3.

[0025] In use, the automatic sealing device for packaging bags of this utility model places the packaging bag to be sealed between two sealing components. After the drive device 2 is started, it drives the sealing components on both sides to move closer synchronously, so that the two heating blocks 3 clamp and heat the two sides of the packaging bag to achieve heat sealing. At the same time, the cutting component set on one of the sealing components is activated, driving the cutter 105 on it to move along the direction of the groove 4. When the two sealing components are completely closed, the cutter 105 extends out of the groove 4 of the heating block 3 on this side and inserts into the corresponding groove 4 of the heating block 3 on the opposite side, thereby cutting the packaging bag at the same time as heat sealing is completed. By symmetrically setting the grooves 4 on the two heating blocks 3 and cooperating with the cutting component, the integrated operation of heat sealing and cutting is realized. It has the advantages of compact structure, coordinated action, synchronous sealing and cutting, and precise positioning, which effectively improves packaging efficiency and sealing and cutting quality, while avoiding the problems of large space occupation and complex maintenance of traditional independent cutter 105 mechanisms.

[0026] The sealing assembly includes a mounting plate 6, two mounting blocks 7 symmetrically arranged on the mounting plate 6, a perforated plate 8 on the two mounting blocks 7, a pressure plate 9 on the perforated plate 8, and a heating block 3 on the pressure plate 9. The sealing assembly is fixed to the drive device 2 via the mounting plate 6. The two mounting blocks 7, symmetrically arranged on the mounting plate 6, support and position subsequent structures. The perforated plate 8 is positioned between the two mounting blocks 7; its perforated design not only reduces overall weight but also facilitates the layout and heat dissipation of internal wiring or air passages. The pressure plate 9 is mounted on the perforated plate 8, transmitting pressure and evenly distributing driving force during the sealing process. The heating block 3 is located on the outside of the pressure plate 9, directly contacting the packaging bag to achieve reliable sealing during heat pressing. This multi-layered modular structure design gives the sealing assembly good rigidity and thermal stability. Simultaneously, the clear division of labor among components and convenient assembly improve the maintainability and operational accuracy of the equipment, ensuring pressure uniformity and repeatability during the heat sealing process, thereby effectively improving sealing quality and overall machine reliability.

[0027] The cutting assembly includes a cutter 105, guide rods 11 at both ends of the cutter 105, a guide sleeve 12 on the mounting plate 6 through which the guide rods 11 pass, a connecting plate 13 connecting the two guide rods 11, and a cutting cylinder 14 on the connecting plate 13 with its output end fixed on the mounting plate 6.

[0028] The cutting assembly forms a stable linear guide structure by setting guide rods 11 at both ends of the cutter 105 and sliding the guide rods 11 through the guide sleeves 12 on the mounting plate 6. The connecting plate 13 is fixed between the two guide rods 11 to form a linkage frame to ensure that the cutter 105 moves synchronously. The cutting cylinder 14 is set on the connecting plate 13 and its piston rod is fixed on the mounting plate 6. When the cylinder is activated, the cylinder body moves with the connecting plate 13, thereby driving the cutter 105 to reciprocate along the direction of the guide rods 11 to realize the cutting operation of the packaging bag.

[0029] Each of the two sealing assemblies has a corresponding pressing block 15 on its pressing plate 9, and the pressing block 15 has several V-shaped protrusions 16. When the sealing assemblies on both sides close for heat sealing under the action of the driving device 2, the V-shaped protrusions 16 first contact and press against the edge of the packaging bag to be sealed, using the localized high pressure generated by the V-shaped tips to effectively seal the packaging bag, preventing it from shifting or sliding during heat sealing or subsequent cutting.

[0030] The heating block 3 is provided with sealing texture 17, and the cutting groove 4 is vertically formed in the middle of the heating block 3. The sealing texture 17 on the working surface of the heating block 3 allows the sealing assemblies on both sides to press together when closed, forming a corresponding textured sealing area on the surface of the packaging bag. This not only increases the heat-sealing contact area and improves heat conduction efficiency but also significantly enhances the tensile strength and sealing reliability of the seal. Simultaneously, the cutting groove 4, vertically formed in the middle of the heating block 3, serves as a guide channel for the movement of the cutter 105, ensuring precise embedding of the cutter 105 during the closing process and achieving stable cutting of the packaging bag. This structure integrates the sealing texture 17 and the cutting groove 4 onto the same heating block 3, resulting in a reasonable layout and high functional integration. It ensures the continuity and uniformity of the heat-sealing area while avoiding deviation or jamming of the cutter 105 during cutting, thus improving the sealing and cutting synchronization accuracy and equipment operational stability.

[0031] The driving device 2 is a bidirectional cylinder, and its two output ends are respectively connected to the mounting plates 6 on both sides. The driving device 2 uses a bidirectional cylinder, and its two output ends are respectively connected to the mounting plates 6 of the sealing components on both sides. When the cylinder is started, the piston extends or retracts synchronously to both ends, directly pushing the mounting plates 6 on both sides to drive the sealing components to move closer or further away synchronously, thereby realizing the clamping, sealing and resetting action of the packaging bag.

[0032] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit this utility model. All equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. An automatic sealing device for packaging bags, characterized in that, include: Fixed bracket; A drive device mounted on the fixed bracket; Two sealing components are symmetrically arranged at both ends of the driving device, and the driving device can drive the two sealing components to move closer or further away synchronously. A cutting component is provided on one of the sealing components; Both sealing components are symmetrically provided with heating blocks, each heating block having a cutting groove, and the cutting component is provided with a cutting blade placed in the cutting groove; When the two sealing assemblies are closed, the cutting assembly drives the cutter to cut the packaging bag located between the two heating blocks.

2. The automatic sealing device for packaging bags according to claim 1, characterized in that: The sealing assembly includes a mounting plate, two mounting blocks symmetrically arranged on the mounting plate, a perforated plate arranged on the two mounting blocks, a pressure plate arranged on the perforated plate, and a heating block arranged on the pressure plate.

3. The automatic sealing device for packaging bags according to claim 2, characterized in that: The cutting assembly includes a cutter, guide rods at both ends of the cutter, a guide sleeve on the mounting plate through which the guide rods pass, a connecting plate between the two guide rods, and a cutting cylinder on the connecting plate with its output end fixed to the mounting plate.

4. The automatic sealing device for packaging bags according to claim 2, characterized in that: Each of the two sealing components has a corresponding pressing block on its pressing plate, and the pressing block has several V-shaped protrusions.

5. The automatic sealing device for packaging bags according to claim 4, characterized in that: The heating block has sealing patterns, and the cutting groove is opened vertically in the middle of the heating block.

6. The automatic sealing device for packaging bags according to claim 2, characterized in that: The driving device is a bidirectional cylinder, and the two output ends of the bidirectional cylinder are respectively connected to the mounting plates on both sides.

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