A kind of hot-pressing device for soft package bag processing

Abstract

This utility model relates to the field of packaging bag production technology and discloses a hot pressing device for processing flexible packaging bags. It includes a base, a top plate fixedly connected to the base via a support rod, a lifting component fixedly connected to the top plate, and a mounting plate fixedly connected to the output end of the lifting component. A pressing plate is elastically connected to the bottom of the mounting plate, and an upper heating block is fixedly connected to the mounting plate, with the bottom end face of the pressing plate lower than the bottom end face of the upper heating block. A lower heating block corresponding to the upper heating block is fixedly connected to the base. The pressing plate of this utility model can press the area to be hot-pressed in advance, enabling the two films to adhere during the hot pressing process, reducing the occurrence of "misalignment" and "off-center sealing." Furthermore, after hot pressing, the pressing plate, under the action of elasticity, can push the film away from the upper heating block, reducing adhesion to the upper heating block and improving the hot pressing quality.

Description

Technical Field

[0001] This utility model relates to the field of packaging bag production technology, specifically a hot pressing device for processing flexible packaging bags. Background Technology

[0002] Flexible packaging bag processing is a systematic process integrating substrate lamination, printing, and bag making. Its core lies in achieving the functions of barrier properties, sealing, and aesthetics through the combination and precision processing of multiple layers of substrate. Bag making mainly involves unwinding, heat sealing, and cutting. Heat sealing is the core step in bag making; by heating and pressing the bag opening or edge of the bag body, multiple layers of film are fused together to form a strong seal. Simply put, flexible packaging bags are typically made of two films joined together, and the heat sealing device is used to achieve a sealed connection by pressing the edges of the films together.

[0003] The main structural components of the hot pressing device are: heating system: heating the heating components (heating plate / mold) using heating methods such as electric heating tubes, ceramic heaters or silicone heating plates; and pressurization system: commonly used methods include cylinders, hydraulic cylinders or servo motors to drive the heating components to apply pressure.

[0004] Existing heating plates make it inconvenient to press the upper and lower films together before hot pressing, which can easily lead to "misalignment" and "off-center sealing" phenomena, affecting the quality of hot pressing. Utility Model Content

[0005] This utility model provides a hot pressing device for processing flexible packaging bags. By setting a pressing plate, the hot pressing area is pressed before hot pressing, reducing the displacement and misalignment between the two films, and solving the problems of "misalignment" and "off-center sealing" mentioned in the background art, which affect the hot pressing quality.

[0006] This utility model provides the following technical solution:

[0007] A hot stamping device for processing flexible packaging bags includes a base, a top plate fixedly connected to the base via a support rod, a lifting component fixedly connected to the top plate, and a mounting plate fixedly connected to the output end of the lifting component. A pressing plate is elastically connected to the bottom of the mounting plate, an upper heating block is fixedly connected to the mounting plate, and the bottom end face of the pressing plate is lower than the bottom end face of the upper heating block. A lower heating block corresponding to the upper heating block is fixedly connected to the base.

[0008] As a preferred embodiment of this utility model, the mounting plate is provided with a second mounting groove, the upper heating block is fixedly connected in the second mounting groove, and the pressing plate is provided with a through groove that matches the upper heating block, with the bottom of the upper heating block extending into the through groove.

[0009] As a preferred embodiment of this utility model, at least two limiting rods are fixedly connected to the top of the pressing plate. One end of the limiting rod passing through the mounting plate is fixedly connected to a limiting plate, and a spring is sleeved on the limiting rod. The two ends of the spring abut against the pressing plate and the mounting plate, respectively.

[0010] As a preferred embodiment of this utility model, both the upper heating block and the lower heating block are U-shaped.

[0011] As a preferred embodiment of this utility model, both the upper heating block and the lower heating block are fixedly connected with electric heating wires, and the temperature of the lower heating block is lower than that of the upper heating block.

[0012] As a preferred embodiment of this utility model, the upper heating block and the lower heating block are made of stainless steel, and the heating surfaces of the upper heating block and the lower heating block are both fixedly connected with a Teflon coating.

[0013] As a preferred embodiment of this utility model, the lifting component includes a cylinder fixedly connected to the top plate, the output end of the cylinder being fixedly connected to the mounting plate, and a guide rod being fixedly connected to the top of the mounting plate, the guide rod being slidably connected to the top plate.

[0014] As a preferred embodiment of this utility model, the base has multiple legs fixedly connected to its bottom, and each leg has a fixed plate fixedly connected to its bottom.

[0015] Compared with the prior art, this utility model provides a hot stamping device for processing flexible packaging bags, which has the following beneficial effects:

[0016] 1. In this hot pressing device for processing flexible packaging bags, when the lifting component slides the mounting plate and the upper heating block downwards for hot pressing, the pressing plate can press the area to be hot pressed first, and then the upper heating block continues to press down for heat sealing. This can make the two films adhere together during the hot pressing process, reducing the occurrence of "misalignment" and "off-center sealing". After the hot pressing is completed, the pressing plate can push the film away from the upper heating block under the action of elasticity, reducing adhesion to the upper heating block and improving the hot pressing quality.

[0017] 2. In this hot stamping device for processing flexible packaging bags, by designing the upper heating block as a U-shaped structure, three sides of the packaging bag can be hot stamped simultaneously, effectively improving the hot stamping efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0020] Figure 1 This is a three-dimensional illustration of the present utility model. Figure 1 ;

[0021] Figure 2 This is a three-dimensional illustration of the present utility model. Figure 2 ;

[0022] Figure 3 This is a partial sectional view of the present invention;

[0023] Figure 4 This is a three-dimensional schematic diagram of the pressing plate of this utility model.

[0024] In the diagram: 1. Base; 101. Fixing plate; 102. First mounting slot; 103. Top plate; 2. Mounting plate; 201. Guide rod; 202. Second mounting slot; 3. Pressing plate; 301. Through slot; 302. Limiting rod; 4. Upper heating block; 5. Lower heating block. Detailed Implementation

[0025] To make the utility model's objectives, features, and advantages more apparent and understandable, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below 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 scope of protection of the present utility model.

[0026] In the description of this utility model, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component centrally located at the same time.

[0027] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0028] Reference Figures 1-4 A heat sealing device for processing flexible packaging bags includes a base 1. Multiple support legs, preferably four, are fixedly connected to the bottom of the base 1. A fixing plate 101 is fixedly connected to the bottom of the support legs, and the fixing plate 101 has four circumferentially distributed through holes for easy fixing of the base 1 to a machine platform, improving stability. A top plate 103 is fixedly connected to the top of the base 1 via a support rod. A lifting component is fixedly connected to the top plate 103. A mounting plate 2 is fixedly connected to the output end of the lifting component. A pressing plate 3 is elastically connected to the bottom of the mounting plate 2, and an upper heating block 4 is fixedly connected to the mounting plate 2. The bottom end face of the pressing plate 3 is lower than the bottom end face of the upper heating block 4, meaning the clamping surface of the pressing plate 3 is lower than the bottom heating surface of the upper heating block 4. A lower heating block 5, corresponding to the upper heating block 4, is fixedly connected to the base 1. Both the upper heating block 4 and the lower heating block 5 have a mesh pattern fixedly connected to their heating surfaces, effectively improving the heat sealing quality. Here, a first mounting groove 102 is provided on the base 1. An ear plate is fixedly connected to the bottom of the lower heating block 5. The ear plate is fixed in the first mounting groove 102 by screws. The heating surface of the top of the lower heating block 5 is flush with the top end face of the base 1. Electric heating wires are fixedly connected in both the upper heating block 4 and the lower heating block 5. Power supply and temperature control are achieved through an external power supply and temperature control device (PID temperature controller + thermocouple real-time monitoring). For single or intermittent hot pressing, it is preferable to keep the temperature of the lower heating block 5 lower than that of the upper heating block 4 by 5-10 degrees Celsius. This can reduce the packaging bag from sticking to the lower heating block 5. In other embodiments, when the automatic unwinding mechanism and the cutting mechanism are used to continuously hot press the film, the electric heating wire in the lower heating block 5 does not work, which can avoid adhesion during the film movement.

[0029] When in use, the lifting component slides the mounting plate 2 and the upper heating block 4 downwards for hot pressing. The pressing plate 3 can press the area to be hot pressed first, and then the upper heating block 4 continues to press down for heat sealing. This can make the two films adhere together during the hot pressing process, reducing the occurrence of "misalignment" and "off-center sealing". After the hot pressing is completed, the pressing plate 3 can push the film off the upper heating block 4 under the action of elasticity, reducing adhesion to the upper heating block 4 and improving the hot pressing quality.

[0030] Reference Figure 1 , Figure 2 and Figure 4 A second mounting groove 202 is provided on the mounting plate 2, and the upper heating block 4 is fixedly connected in the second mounting groove 202. Here, the upper heating block 4 is fixed in the second mounting groove 202 with screws, which is convenient for installation and removal, reliable for fixing, and convenient for subsequent maintenance and replacement. A through groove 301 matching the upper heating block 4 is provided on the pressing plate 3, and the bottom of the upper heating block 4 extends into the through groove 301. When descending, the pressing plate 3 first abuts against the film, and then the upper heating block 4 can continue to descend along the through groove 301 and abut against the film to achieve heat pressing of the film.

[0031] Reference Figure 1 , Figure 3 and Figure 4 At least two limiting rods 302 are fixedly connected to the top of the pressing plate 3, preferably four. A limiting plate is fixedly connected to one end of the limiting rod 302 that passes through the mounting plate 2, and a spring is sleeved on the limiting rod 302. The two ends of the spring abut against the pressing plate 3 and the mounting plate 2 respectively. In use, when the mounting plate 2 descends, the pressing plate 3 abuts against the film first under the action of the spring. As the upper heating block 4 continues to descend and abut against the film, the spring is compressed, thus pressing the film. After heat sealing is completed, the mounting plate 2 rises with the upper heating block 4. At this time, the spring extends, which allows the pressing plate 3 to continue pressing on the film, reducing the phenomenon of adhesion to the upper heating block 4.

[0032] Reference Figure 1 and Figure 2 Both the upper heating block 4 and the lower heating block 5 have a U-shaped structure, which can simultaneously heat three sides of the packaging bag, improving the heat-pressing effect.

[0033] Reference Figure 1 and Figure 2 The upper heating block 4 and the lower heating block 5 are made of stainless steel, and the heating surfaces of the upper heating block 4 and the lower heating block 5 are fixedly connected with Teflon coating, which has the effect of anti-slip and does not damage the film surface.

[0034] Reference Figure 1 and Figure 3The lifting component can be a hydraulic cylinder or an electric telescopic cylinder. Here, it is preferred that the lifting component is designed with a cylinder fixedly connected to the top plate 103, the output end of the cylinder is fixedly connected to the mounting plate 2, and a guide rod 201 is fixedly connected to the top of the mounting plate 2. The guide rod 201 is slidably connected to the top plate 103, and preferably two guide rods 201 are symmetrically arranged. In use, by starting the cylinder, the mounting plate 2 can be raised and lowered to achieve heat sealing. The guide rod 201 can ensure that the mounting plate 2 can be raised and lowered reliably, reduce the occurrence of deflection, and improve the heat sealing quality.

[0035] It should be noted that components not described in detail in this article are existing technologies.

[0036] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A hot stamping device for processing flexible packaging bags, comprising a base (1), characterized in that, The base (1) is fixedly connected to a top plate (103) via a support rod. A lifting component is fixedly connected to the top plate (103), and the base also includes a mounting plate (2) fixedly connected to the output end of the lifting component. Among them, the bottom of the mounting plate (2) is elastically connected to a pressing plate (3), the upper heating block (4) is fixedly connected to the mounting plate (2), and the bottom end face of the pressing plate (3) is lower than the bottom end face of the upper heating block (4). The base (1) is fixedly connected to a lower heating block (5) corresponding to the upper heating block (4).

2. The hot stamping device for processing flexible packaging bags according to claim 1, characterized in that, The mounting plate (2) has a second mounting groove (202), the upper heating block (4) is fixedly connected in the second mounting groove (202), and the pressing plate (3) has a through groove (301) matching the upper heating block (4), the bottom of the upper heating block (4) extends into the through groove (301).

3. The hot stamping device for processing flexible packaging bags according to claim 2, characterized in that, At least two limiting rods (302) are fixedly connected to the top of the pressing plate (3). One end of the limiting rod (302) passes through the mounting plate (2) and is fixedly connected to the limiting plate. A spring is sleeved on the limiting rod (302), and the two ends of the spring abut against the pressing plate (3) and the mounting plate (2) respectively.

4. The hot stamping device for processing flexible packaging bags according to claim 1, characterized in that, Both the upper heating block (4) and the lower heating block (5) have a U-shaped structure.

5. A hot stamping device for processing flexible packaging bags according to claim 1, characterized in that, Both the upper heating block (4) and the lower heating block (5) are fixedly connected with electric heating wires, and the temperature of the lower heating block (5) is lower than that of the upper heating block (4).

6. A hot stamping device for processing flexible packaging bags according to claim 1, characterized in that, The upper heating block (4) and the lower heating block (5) are made of stainless steel, and the heating surfaces of the upper heating block (4) and the lower heating block (5) are fixedly connected with Teflon coating.

7. The hot stamping device for processing flexible packaging bags according to claim 1, characterized in that, The lifting component includes a cylinder fixedly connected to the top plate (103), the output end of the cylinder being fixedly connected to the mounting plate (2), and a guide rod (201) being fixedly connected to the top of the mounting plate (2), the guide rod (201) being slidably connected to the top plate (103).

8. A hot stamping device for processing flexible packaging bags according to claim 1, characterized in that, The base (1) has multiple legs fixedly connected to its bottom, and a fixed plate (101) is fixedly connected to the bottom of each leg.

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