Hot pack heat press sealing device

Abstract

The utility model provides a hot compress paste hot press sealing device relates to hot compress paste hot press sealing technical field, it includes compression assembly and lift adjusting assembly, compression assembly includes first mobile piece, rotating piece, second mobile piece, drive cylinder and moving piece, the lower part of moving piece middle part is equipped with compression adjusting mechanism, lift adjusting assembly includes first lifting frame, elastic telescopic mechanism and second lifting frame, first lifting frame is connected through elastic telescopic mechanism with the top of second lifting frame, the utility model sets up telescopic column, spring, the combination structure of nut cover and screw rod, the hot melt adhesive of non - woven bag bag four around is heated and is compressed, passes through the resilience characteristic of spring simultaneously, can carry out self - adaptive compensation to different thickness and hardness's hot compress paste, makes the upper and lower layer more level when pasting. Through the compression assembly in the pressing plate in extruding non - woven bag bag, makes non - woven bag bag sealed to the unit to be compressed on, has accurate, no wrinkle, sealed line even consistent advantage.

Description

Technical Field

[0001] This utility model relates to the field of patch manufacturing, specifically to a hot-press sealing device for heat-applied patches. Background Technology

[0002] Heating patches are a common type of heat-generating product widely used in medical rehabilitation, sports protection, and daily health care. They typically contain iron powder, activated carbon, vermiculite, inorganic salts, or other materials that can undergo an exothermic reaction under specific conditions. Through contact with air, heating patches can continuously and stably generate heat for a certain period, providing a warm stimulus to a localized area of ​​the body, thus soothing muscles, promoting blood circulation, and relieving pain. To ensure their effectiveness and safety, heating patches generally consist of a multi-layered structure, including the heating pad itself to carry the medication and heating material, a backing layer providing support and protection, and release paper to prevent sticking during storage and transportation.

[0003] The manufacturing process of heat therapy patches typically includes steps such as raw material feeding, coating or filling, film lamination, sealing, cutting, and packaging. Among these, the sealing process is particularly critical, directly determining the overall sealing performance and lifespan of the heat therapy patch. Poor sealing quality can easily lead to leakage of the internal heating material, causing a decline in product performance and potentially affecting user safety. Most existing heat therapy patch sealing processes rely on the action of a heated sealing blade and pressure to tightly bond the backing layer to the heat therapy patch through heat pressing, thus forming a continuous sealing line.

[0004] However, existing sealing devices still have certain limitations. First, the lack of effective tension control during material transfer makes them prone to wrinkling or loosening, causing misalignment between layers. Second, uneven sealing pressure and temperature control can lead to weak adhesion in some areas, resulting in leaks and leakage of heat-generating substances. Third, existing devices are mostly fixed structures, lacking adaptability to different thicknesses and materials, which can easily increase defect rates during mass production. Furthermore, some devices have slow temperature control response times, resulting in insufficient stability in the sealing process and making it difficult to guarantee consistent product quality under large-scale production conditions.

[0005] Therefore, providing a thermo-press sealing device that can effectively improve tension control, ensure material flatness and alignment, and achieve precise temperature and pressure control during the sealing process has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0006] To address the shortcomings of existing technologies, this invention aims to provide a heat-sealing device for heat-applied patches. This device utilizes a combination of a telescopic column, spring, nut sleeve, and screw in its lifting and adjusting assembly to heat and press the hot melt adhesive around the non-woven fabric bag. Simultaneously, the spring's rebound properties allow for adaptive compensation for heat-applied patches of varying thicknesses and hardness, resulting in a smoother fit between layers. The pressing assembly, with its pressure plate compressing the non-woven fabric bag, seals it onto the pressing unit. The grippers, support base, and base, along with the elasticity of the torsion spring, clamp and guide the edges of the heat-applied patch.

[0007] Specifically, this utility model provides a hot compress sealing device, which includes a pressing assembly and a lifting adjustment assembly. The pressing assembly includes a first movable member, a rotating member, a second movable member, a drive cylinder, and a moving member. The first end of the first movable member is rotatably connected to the top end of the moving member, the first end of the rotating member is rotatably connected to the second end of the first movable member, the first end of the second movable member is rotatably connected to the second end of the rotating member, the moving end of the drive cylinder is connected to the second end of the second movable member, the fixed end of the drive cylinder is rotatably connected to the top of the support frame via a bearing, the third end of the rotating member is rotatably connected to the middle of the rotating shaft, and both ends of the rotating shaft are fixedly connected to the support frame. The moving member is close to the support frame. One side of the moving part is slidably connected to the slide rail on the support frame via a slide table, and a pressing adjustment mechanism is provided in the lower middle part of the moving part; the lifting adjustment assembly includes a first lifting frame, an elastic telescopic mechanism, and a second lifting frame. The first lifting frame is connected to the top of the second lifting frame via the elastic telescopic mechanism. The elastic telescopic mechanism includes a first support, a telescopic column, a connecting seat, a nut sleeve, a screw, and a second support. The connecting seat is rotatably connected to the hinge end of the first support. A spring is sleeved on the telescopic column, and the two ends of the spring are respectively connected to the nut sleeve and the telescopic column. The two ends of the screw are respectively connected to the connecting seat and the telescopic column. The screw is threadedly connected to the inner cavity of the nut sleeve. The hinge end of the telescopic column is rotatably connected to the second support.

[0008] Preferably, a positioning component is also provided, which includes a gripper, a support base and a base. The two ends of the gripper are rotatably connected to the support base set on the base by a pin, and a torsion spring is provided at the connection between the gripper and the support base. The support frame of the pressing component is vertically fixed on the base of the positioning component.

[0009] Preferably, the pressing adjustment mechanism includes a cam, a pressure rod, and a guide seat. The cam shaft is rotatably connected to the guide seat. The pressure rod passes through the guide hole of the guide seat. A return spring is sleeved on the pressure rod. The two ends of the return spring are respectively connected to the boss on the pressure rod and the guide plate of the guide seat. The first end of the pressure rod abuts against the outer periphery of the cam, and the second end of the pressure rod is fixedly connected to the pressure plate.

[0010] Preferably, a pressure plate is provided at the bottom of the pressing and adjusting mechanism.

[0011] Preferably, the support plate has a positioning groove that matches the shape of the heat patch.

[0012] Preferably, the top of the first lifting frame is slidably connected to both ends of the moving part, and a locking element is provided at the slidable connection between the first lifting frame and the moving part.

[0013] Preferably, the bottom of the second lifting frame is equipped with a heater and a temperature sensor.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model adjusts the height of the first lifting frame through the lifting adjustment component, and an elastic telescopic mechanism is provided between the first lifting frame and the second lifting frame. It can adaptively adjust the tension according to various heat therapy patches and squeeze and seal them around the perimeter. Furthermore, the non-woven fabric bag is squeezed onto the pressing unit 24 by the pressure plate in the pressing component, which has the characteristics of accurate sealing position, no wrinkles, and uniform sealing line.

[0015] 2. This utility model achieves controllable adjustment of the sealing tension of the heat pack by incorporating a combination structure of a telescopic column, spring, nut sleeve, and screw in the lifting and adjusting assembly. When the heat pack passes through the sealing area, the linkage between the telescopic column and the screw maintains a stable tension, preventing wrinkling and stacking caused by uneven stretching or loosening of the heat pack during sealing. Furthermore, the spring's rebound properties allow for adaptive compensation for heat packs of different thicknesses and hardnesses, resulting in a smoother fit between upper and lower layers.

[0016] 3. This utility model incorporates a positioning component that, through the cooperation of grippers, a support base, and a base, clamps and guides the edges of the heat-applied patch under the elastic action of a torsion spring. The grippers tighten upon rotation, ensuring alignment of the upper and lower bonding surfaces before sealing, effectively preventing poor sealing due to misalignment. Simultaneously, this structure ensures sufficient clamping force without damaging the material edges, resulting in a straighter sealing line, more reliable sealing, and reduced risk of leakage. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the hot compress and hot-press sealing device of this utility model; Figure 2 This is a side view of the heat-sealing device for heat-applied patches according to this utility model. Figure 3 This is a schematic diagram showing the coordination of the components in the hot-press sealing device for hot compresses of this utility model; Figure 4 This is a schematic diagram of the structure of the pressing component and the lifting adjustment component cooperating in the hot-press sealing device of the present invention; Figure 5 This is a schematic diagram of the elastic telescopic mechanism in the hot-press sealing device of the present invention. Figure 6 This is a front view schematic diagram of the elastic telescopic mechanism in the hot compress sealing device of this utility model.

[0018] Key reference numerals: 1. Pressing assembly; 11. First moving part; 12. Rotating part; 13. Second moving part; 14. Drive cylinder; 15. Moving part; 16. Support frame; 17. Rotating shaft; 18. Pressing adjustment mechanism; 19. Pressure plate; 2. Lifting adjustment assembly; 21. First lifting frame; 22. Elastic telescopic mechanism; 221. First support; 222. Telescopic column; 223. Spring; 224. Connecting seat; 225. Nut sleeve; 226. Screw; 227. Second support; 23. Second lifting frame; 24. Unit to be pressed; 25. Locking part; 3. Positioning assembly; 31. Gripper; 32. Support seat; 33. Base; 34. Support plate. Detailed Implementation

[0019] The embodiments of this utility model will now be described with reference to the accompanying drawings.

[0020] This utility model relates to a heat-sealing device for heat-applied patches, such as... Figure 1 and Figure 2 As shown, it includes a pressing component 1, a lifting and adjusting component 2, and a positioning component 3. The bottom of the first lifting frame 21 of the lifting and adjusting component 2 is slidably connected to the moving part 15 of the pressing component 1, and a locking part 25 is provided at the sliding point between the first lifting frame 21 and the moving part 15. The first lifting frame 21 is adjusted to a suitable height according to the thickness of the heat patch and locked and fixed on the first lifting frame 21 by the locking part 25.

[0021] like Figure 3 and Figure 4As shown, the pressing assembly 1 includes a first movable member 11, a rotating member 12, a second movable member 13, a drive cylinder 14, and a moving member 15. The first end of the first movable member 11 is rotatably connected to the top end of the moving member 15. The first end of the rotating member 12 is rotatably connected to the second end of the first movable member 11. The first end of the second movable member 13 is rotatably connected to the second end of the rotating member 12. The moving end of the drive cylinder 14 is connected to the second end of the second movable member 13. The fixed end of the drive cylinder 14 is rotatably connected to the top of the support frame 16 via a bearing. The third end of the rotating member 12 is rotatably connected to the middle of a rotating shaft 17. Both ends of the moving part 15 are fixedly connected to the support frame 16. The side of the moving part 15 near the support frame 16 is slidably connected to the slide rail on the support frame 16 via a slide table. A pressing adjustment mechanism 18 is provided in the lower middle part of the moving part 15. The support frame 16 of the pressing assembly 1 is vertically fixed on the base 33 of the positioning assembly 3. The positioning assembly 3 is also provided, which includes a gripper 31, a support seat 32 and a base 33. Both ends of the gripper 31 are rotatably connected to the support seat 32 on the base 33 via pins. A torsion spring is provided at the connection between the gripper 31 and the support seat 32. The support plate 34 has a positioning groove that matches the shape of the heat patch.

[0022] In a preferred embodiment, the pressing adjustment mechanism 18 includes a cam, a pressure rod, and a guide seat. The cam shaft is rotatably connected to the guide seat. The pressure rod passes through the guide hole of the guide seat, and a return spring is sleeved on the pressure rod. The two ends of the return spring are respectively connected to a boss on the pressure rod and a guide plate of the guide seat. The first end of the pressure rod abuts against the outer periphery of the cam, and the second end of the pressure rod is fixedly connected to the pressure plate 19. The pressing adjustment mechanism 18 has a pressure plate 19 at its bottom.

[0023] like Figure 5 and Figure 6 As shown, the lifting adjustment assembly 2 includes a first lifting frame 21, an elastic telescopic mechanism 22, and a second lifting frame 23. The top of the first lifting frame 21 is slidably connected to both ends of the moving part 15, and a locking part 25 is provided at the slidable connection between the first lifting frame 21 and the moving part 15. The first lifting frame 21 is connected to the top of the second lifting frame 23 through the elastic telescopic mechanism 22. The elastic telescopic mechanism 22 includes a first support 221, a telescopic column 222, a connecting seat 224, a nut sleeve 225, a screw 226, and a second support 227. The connecting seat 224 is rotatably connected to the hinge end of the first support 221. A spring 223 is sleeved on the telescopic column 222. The two ends of the spring 223 are respectively connected to the nut sleeve 225 and the telescopic column 222. The two ends of the screw 226 are respectively connected to the connecting seat 224 and the telescopic column 222. The screw 226 is threadedly connected to the inner cavity of the nut sleeve 225. The hinge end of the telescopic column 222 is rotatably connected to the second support 227. The support plate 34 is located directly below the second lifting frame 23. A heater and a temperature sensor are provided at the bottom of the second lifting frame 23.

[0024] The following description, in conjunction with embodiments, further illustrates the present invention's heat-sealing device for heat-applied patches: This utility model relates to a heat-sealing device for heat-applied patches. A vacuum membrane, a heating non-woven fabric bag, and a pressing unit 24 are stacked sequentially and precisely pressed together using a pressing assembly 1. The heating non-woven fabric bag contains iron powder, activated carbon, and salt. A lifting adjustment assembly 2 heats and presses the hot melt adhesive around the non-woven fabric bag, melting it and bonding it to the pressing unit 24. After cooling, a strong seal is formed. During the sealing process, the tension of the heat-applied patch can be controlled, ensuring accurate sealing, no wrinkles, and a uniform sealing line. In use, the vacuum membrane is torn open, allowing oxygen from the air to enter the patch through the heating non-woven fabric bag. Catalyzed by the salt, the iron powder inside the heating non-woven fabric bag undergoes an oxidation reaction, releasing heat. The activated carbon ensures even heat distribution.

[0025] First, the vacuum membrane, the heated nonwoven bag, and the pressing unit 24 are stacked together and placed in the middle of the support plate 34, so that the pressing unit 24 is directly below the pressure plate 19. The pressing assembly 1 presses the nonwoven bag onto the pressing unit 24 using the pressure plate 19. Specifically, the drive cylinder 14 drives the second movable member 13 to move, and the rotating member 12 rotates around the rotating shaft 17 under the drive of the second movable member 13. Then, the moving member 15, which is rotatably connected to the first movable member 11, moves vertically along the slide rail on the support frame 16, thereby causing the pressure plate 19, which is connected to the moving member 15, to move downwards vertically.

[0026] Then, the nonwoven bag is fixed onto the pressing unit 24 by the positioning component 3. The gripper 31 of the positioning component 3 rotates on the support base 32, causing the gripper 31 to tightly engage the pressing unit 24 under the action of the torsion spring. The spring 223 is adjusted to a suitable tension by the helical movement of the nut sleeve 225 on the screw 226. The lifting adjustment component 2 fixes the pressing unit 24 and heat-presses the nonwoven bag onto the pressing unit 24. The first lifting frame 21 is adjusted to a suitable height according to the thickness of the pressing unit 24 and locked in place by the locking member 25. The distance between the first lifting frame 21 and the second lifting frame 23 is adjusted by the elastic telescopic mechanism 22. The second lifting frame 23 presses against the sealing layer of the nonwoven bag, which is usually a hot melt adhesive coating or CPP layer, causing it to melt instantly to a viscous flow state. At the same time, the second lifting frame 23 applies uniform pressure and temperature, so that the melted sealing layer of the nonwoven bag is tightly bonded to the pressing unit 24. The molecules of the two diffuse and permeate each other.

[0027] Finally, the pressure plate 19 and the second lifting frame 23 move vertically upwards, and the non-woven bag cools naturally or is cooled more quickly by a cooling device. The molten sealing layer is re-solidified to form a strong, uniform and airtight sealing line, which can ensure that the heating material does not leak, while allowing air to slowly enter to trigger the heating reaction.

[0028] This utility model's heat-sealing device for heat-applied patches utilizes a combination structure in the lifting and adjusting assembly 2, consisting of a telescopic column 222, a spring 223, a nut sleeve 225, and a screw 226, to heat and press the hot melt adhesive around the non-woven fabric bag. Simultaneously, the spring 223's rebound characteristic allows for adaptive compensation for heat-applied patches of varying thicknesses and hardness, resulting in a smoother fit between layers. The pressing assembly 1, with its pressure plate 19, simultaneously presses the non-woven fabric bag against the pressing unit 24, sealing it. The gripper 31, support seat 32, and base 33, along with the elastic action of the torsion spring, clamp and guide the edges of the heat-applied patch, providing advantages such as accurate sealing, no wrinkles, and a uniform sealing line.

[0029] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Any modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A heat-sealing device for heat-applied patches, characterized in that: It includes a pressing assembly and a lifting and adjusting assembly. The pressing assembly includes a first movable member, a rotating member, a second movable member, a drive cylinder, and a moving member. The first end of the first movable member is rotatably connected to the top end of the moving member. The first end of the rotating member is rotatably connected to the second end of the first movable member. The first end of the second movable member is rotatably connected to the second end of the rotating member. The moving end of the drive cylinder is connected to the second end of the second movable member. The fixed end of the drive cylinder is rotatably connected to the top of the support frame via a bearing. The third end of the rotating member is rotatably connected to the middle of the rotating shaft. Both ends of the rotating shaft are fixedly connected to the support frame. The side of the moving member closest to the support frame is slidably connected to the slide rail on the support frame via a slide table. A pressing adjustment mechanism is provided below the middle of the moving member. The lifting and adjusting assembly includes a first lifting frame, an elastic telescopic mechanism, and a second lifting frame. The first lifting frame is connected to the top of the second lifting frame via the elastic telescopic mechanism. The elastic telescopic mechanism includes a first support, a telescopic column, a connecting seat, a nut sleeve, a screw, and a second support. The connecting seat is rotatably connected to the hinged end of the first support. A spring is fitted on the telescopic column, and both ends of the spring are connected to the nut sleeve and the telescopic column, respectively. Both ends of the screw are connected to the connecting seat and the telescopic column, respectively. The screw is threadedly connected to the inner cavity of the nut sleeve. The hinged end of the telescopic column is rotatably connected to the second support.

2. The heat-sealing device for heat-applied patches according to claim 1, characterized in that: It also includes a positioning component, which includes a gripper, a support base and a base. The two ends of the gripper are rotatably connected to the support base set on the base by a pin, and a torsion spring is provided at the connection between the gripper and the support base. The support frame of the pressing component is vertically fixed on the base of the positioning component.

3. The heat-sealing device for heat-applied patches according to claim 1, characterized in that: The pressing adjustment mechanism includes a cam, a pressure rod, and a guide seat. The cam shaft is rotatably connected to the guide seat. The pressure rod passes through the guide hole of the guide seat. A return spring is sleeved on the pressure rod. The two ends of the return spring are respectively connected to the boss on the pressure rod and the guide plate of the guide seat. The first end of the pressure rod abuts against the outer periphery of the cam, and the second end of the pressure rod is fixedly connected to the pressure plate.

4. The heat-sealing device for heat-applied patches according to claim 1, characterized in that: The bottom of the pressing and adjusting mechanism is equipped with a pressure plate.

5. The heat-sealing device for heat-applied patches according to claim 1, characterized in that: The support plate has a positioning groove that matches the shape of the heat patch.

6. The heat-sealing device for heat-applied patches according to claim 1, characterized in that: The top of the first lifting frame is slidably connected to both ends of the moving part, and a locking element is provided at the slidable connection between the first lifting frame and the moving part.

7. The heat-sealing device for heat-applied patches according to claim 4, characterized in that: The second lifting frame is equipped with a heater and a temperature sensor at its bottom.

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