Hot press sealing apparatus for sealable paper bag
Patent Information
- Application Number
- CN202522236682.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-23
- Publication Date
- 2026-10-20
- Estimated Expiration
- 2035-10-23
AI Technical Summary
[0004]但是，现有技术在使用中还存在不足：传统的热压封合条主要通过多个内六角螺栓固定在基座上，在对热压封合条进行更换时，需要依赖特定工具进行拆卸和安装，拆装过程繁琐、耗时长且操作费力，漫长的换型时间导致设备有效利用率降低，难以适应小批量、多批次订单的快速切换需求，增加了生产运营成本，降低了生产效率
本使用新型利用不同宽度的热压封合条与调节筒之间的相互配合，可以通过简单的转动调节筒快速的更换到不同宽度的热压封合条，从而实现对热压封合条的快速更换，以对不同封合宽度的纸袋进行封合，利用固定孔和活动杆之间的相互配合，可以在不使用特定工具的情况下，仅仅通过简单的上下移动活动杆，就可以实现对调节筒的松开和固定，操作过程简单便捷，节省时间且省力，提高了设备的有效利用率，可以适应小批量、多批次订单的快速切换需求，从而降低了生产运营成本，提高了生产效率。
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Figure CN224867987U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of paper bag heat sealing equipment, specifically a heat sealing equipment for sealable paper bags. Background Technology
[0002] In the paper bag manufacturing industry, to meet the varying requirements for sealing strength and cost of different sized paper bags, heat-sealing strips of different widths are needed for sealing operations. Small, lightweight bags have small bodies and light contents, resulting in less stress on the seal; a narrower sealing width is sufficient, saving hot melt adhesive and energy. Large, heavy-duty bags, on the other hand, have large bodies and heavy contents, resulting in significant peeling and shearing forces on the seal; a wider sealing width is required to provide sufficient bonding area and ensure the bag does not break during handling, stacking, and transportation. Insufficient width is one of the main causes of bag bursting. A wider seal means consuming more hot melt adhesive and energy to heat and seal a wider area, resulting in higher costs.
[0003] Because the factory serves numerous customers, orders cover paper bags of different sizes and load capacities. It is very common for a production line to switch between producing small, lightweight bags with narrow seals and large, heavy-duty bags with wide seals on the same day. Therefore, it is necessary to change the width of the heat-sealing strip to seal the paper bags.
[0004] However, existing technologies still have shortcomings in use: traditional hot-press sealing strips are mainly fixed to the base by multiple hexagonal bolts. When replacing the hot-press sealing strip, it is necessary to rely on specific tools for disassembly and installation. The disassembly and installation process is cumbersome, time-consuming and laborious. The long changeover time leads to a decrease in the effective utilization rate of the equipment, making it difficult to adapt to the rapid switching needs of small batch and multiple batch orders, increasing production and operating costs and reducing production efficiency. Utility Model Content
[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide a heat-sealing device for sealing paper bags. It can quickly switch between heat-sealing strips of different widths without the need to use tools to disassemble the heat-sealing strip, which can effectively solve the problems in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a heat-sealing device for sealable paper bags, comprising a heat-sealing worktable and a support frame mounted on the heat-sealing worktable, characterized in that: a lifting assembly is provided on the support frame, the lifting assembly is provided with a temperature controller and a mounting rod, and the mounting rod is horizontally positioned, with mounting discs at both ends of the mounting rod, and an adjusting cylinder rotatably mounted on the mounting discs, the adjusting cylinder having several mounting slots evenly spaced at equal angles, each mounting slot containing a heat-conducting sheet, and heat-sealing strips of different widths respectively mounted on the outer sides of the heat-conducting sheets, with a temperature sensor mounted on the side of each heat-sealing strip, the output end of the temperature sensor being electrically connected to the input end of the temperature controller, a fixing assembly being provided at one end of the outer side of the adjusting cylinder, and a heating assembly that frictionally engages with the heat-conducting sheets being mounted inside the adjusting cylinder, the heating assembly being fixed on the mounting rod.The regulating cylinder is made of heat-insulating material. During use, when the heated paper bag has a relatively wide sealing width, the external paper bag conveying equipment transports the paper bag with hot melt adhesive at the sealing point directly below one of the wider heat-sealing strips. The heat-sealing strip corresponds to the hot melt adhesive area of the paper bag. The temperature sensor on this heat-sealing strip can transmit the detected temperature data to the temperature controller in real time. The temperature controller can adjust the heating power of the resistance heating strip in real time based on the received temperature data to maintain the heat-sealing strip at a suitable heating temperature. The PLC controller controls the electric telescopic rod to extend downwards. The telescopic end of the electric telescopic rod drives the lifting frame to move downwards, and the lifting frame drives the mounting rod to move downwards. The mounting rod passes through the mounting disc... The adjusting cylinder moves downwards, and through the heat-conducting plate, it moves the heat-sealing strip downwards until it contacts the paper bag. The heat-sealing strip transfers heat to the paper bag, and the paper bag transfers heat to the hot melt adhesive until the hot melt adhesive melts and seals the paper bag. Because the contact area between the heat-sealing strip and the paper bag is large at this point, and the width of the hot melt adhesive is also relatively wide, the resistance heating strip needs a relatively large power to maintain the heat-sealing strip at a suitable heating temperature. When the paper bag to be heated has a narrow sealing width, the holding ball is pulled upwards. The holding ball moves the movable rod upwards, and the movable rod moves the limiting block upwards. The limiting block compresses the spring until the movable rod disengages from the fixing hole. The adjustable wheel, via a connecting column, drives the fixed ring to rotate. The fixed ring then drives the adjusting cylinder to rotate. The adjusting cylinder, through a heat-conducting plate, drives the narrower heat-sealing strip to rotate until it reaches a vertically downward position. At this point, rotation stops, the grip ball is released, and the movable rod, under the spring force, enters the upward-facing fixing hole to secure the adjusting cylinder. This allows for quick replacement of the heat-sealing strip without the need for specific tools. An external paper bag conveying device transports paper bags with hot melt adhesive at the seal to a position directly below one of the narrower heat-sealing strips. The heat-sealing strip aligns with the hot melt adhesive area of the paper bag. The PLC controller controls the electric telescopic rod to extend downwards. The telescopic end of the telescopic rod drives the lifting frame to move downwards, which in turn drives the mounting rod to move downwards. The mounting rod, through the mounting disc, drives the adjusting cylinder to move downwards. The adjusting cylinder, through the heat-conducting plate, drives the narrower heat-sealing strip downwards until it contacts the paper bag. The narrower heat-sealing strip transfers heat to the paper bag, which in turn transfers heat to the hot melt adhesive. Once the hot melt adhesive melts, the paper bag is sealed. Because the contact area between the heat-sealing strip and the paper bag is small at this point, and the width of the hot melt adhesive is also narrow, the resistance heating strip only requires a small amount of power to maintain the heat-sealing strip at a suitable heating temperature. Compared to a wider heat-sealing strip, this method saves more energy and reduces the factory's production costs.
[0007] Furthermore, the heating component is a resistance heating strip disposed below the mounting rod, and the resistance heating strip is provided with a heat insulation shell with an opening at the lower end. The input end of the resistance heating strip is electrically connected to the output end of the temperature controller. The heat insulation shell can reduce heat loss from the resistance heating strip.
[0008] Furthermore, a heat transfer strip is provided below the resistance heating strip, and the heat transfer strip makes frictional contact with the interior of the heat-conducting sheet. The heat transfer strip can better transfer the heat from the resistance heating strip to the heat-conducting sheet and the heat-sealing strip.
[0009] Furthermore, the portion of the heat transfer strip that contacts the heat-conducting sheet is arc-shaped. The arc shape of the heat transfer strip increases the contact area with the heat-conducting sheet, thereby improving the heat transfer effect.
[0010] Furthermore, the lifting assembly comprises a PLC controller and an electric telescopic rod mounted on a support frame, with the telescopic end of the electric telescopic rod facing downwards. A lifting frame is mounted at the lower end of the electric telescopic rod, and a horizontal mounting rod is mounted on the lifting frame. The input end of the electric telescopic rod is electrically connected to the output end of the PLC controller. The telescopic end of the electric telescopic rod can drive the lifting frame to move up and down.
[0011] Furthermore, the fixing component is a fixing ring disposed on the outer side of one end of the adjusting cylinder. The fixing ring has several fixing holes evenly spaced at equal angles around its circumference, corresponding to the heat-sealing strip. A gripping ball is disposed above the lifting frame, and a movable rod is vertically disposed on the gripping ball, penetrating the lifting frame and engaging with the fixing holes. The gripping ball facilitates pulling the movable rod by hand, allowing the rod to be inserted into the fixing holes to secure the fixing ring.
[0012] Furthermore, a limit block is provided at the lower end of the movable rod, and an elastic element is provided on the portion of the movable rod between the limit block and the lifting frame. The elastic element prevents the movable rod from loosening due to non-human operation within the fixing hole.
[0013] Furthermore, the elastic element is a spring. The spring can be easily fitted onto the movable rod, thus better cooperating with the limiting block.
[0014] Furthermore, an adjusting wheel is provided on the outer side of the fixing ring via a connecting post, and anti-slip patterns are evenly distributed around the circumference of the adjusting wheel at equal angles. The anti-slip patterns on the adjusting wheel provide an anti-slip effect.
[0015] Furthermore, a heat insulation cover is provided around the outer perimeter of the hot-press sealing strip, and a through groove is provided on the heat insulation cover to cooperate with the temperature sensor, which passes through the through groove on the heat insulation cover. The heat insulation cover can further reduce the heat loss of the hot-press sealing strip, and the through groove on the heat insulation cover can not affect the contact between the temperature sensor and the hot-press sealing strip.
[0016] Based on the above technical solution, the beneficial effects achieved by the heat-sealing equipment for sealable paper bags of this utility model through practical application are as follows: This invention utilizes the interaction between heat-sealing strips of different widths and an adjusting cylinder. By simply rotating the adjusting cylinder, heat-sealing strips of varying widths can be quickly replaced, enabling rapid changing of the heat-sealing strip to seal paper bags of different widths. Furthermore, the interaction between the fixed hole and the movable rod allows for the loosening and fixing of the adjusting cylinder without the use of specific tools, simply by moving the movable rod up and down. The operation is simple and convenient, saving time and effort, improving the effective utilization rate of the equipment, and adapting to the rapid switching needs of small-batch, multi-batch orders. This reduces production and operating costs and increases production efficiency. Attached Figure Description
[0017] Figure 1 This is a front-view three-dimensional structural diagram of the present invention.
[0018] Figure 2 This utility model Figure 1 A magnified schematic diagram of the structure at point A in the middle.
[0019] Figure 3 This is a schematic diagram of the internal structure of the present invention after it has been cut open.
[0020] Figure 4 This is a three-dimensional structural diagram of the adjusting cylinder after removing other structures from the present invention.
[0021] Figure 5 This utility model Figure 4 A schematic diagram of the three-dimensional structure after removing the regulating cylinder.
[0022] In the diagram: 1-Hot press workbench, 2-Support frame, 3-PLC controller, 4-Electric telescopic rod, 5-Lifting frame, 6-Temperature controller, 7-Mounting rod, 8-Hot press sealing strip, 9-Insulation cover, 10-Temperature sensor, 11-Mounting disc, 12-Adjusting cylinder, 13-Fixing ring, 14-Fixing hole, 15-Adjusting wheel, 16-Connecting column, 17-Anti-slip texture, 18-Holding ball, 19-Moving rod, 20-Spring, 21-Limiting block, 22-Heat insulation shell, 23-Resistance heating strip, 24-Heat transfer strip, 25-Mounting through groove, 26-Heat conduction plate. Detailed Implementation
[0023] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Please see Figure 1-5This embodiment provides a technical solution: a heat-sealing device for sealable paper bags, including a heat-sealing workbench 1 and a support frame 2 set on the heat-sealing workbench 1. The support frame 2 is characterized by a lifting assembly, which includes a temperature controller 6 and a mounting rod 7. The mounting rod 7 is horizontally positioned, with mounting discs 11 at both ends. An adjusting cylinder 12 is rotatably mounted on the mounting discs 11. The adjusting cylinder 12 has several evenly spaced mounting slots 25, each containing a heat-conducting sheet 26. Heat-sealing strips 8 of different widths are mounted on the outer sides of the heat-conducting sheets 26. A temperature sensor 10 is mounted on the side of each heat-conducting sheet 8, and the output of the temperature sensor 10 is electrically connected to the input of the temperature controller 6. A fixing assembly is located at one end of the adjusting cylinder 12, and a heating assembly that frictionally engages with the heat-conducting sheets 26 is located inside the adjusting cylinder 12 and is fixed to the mounting rod 7. The regulating cylinder 12 is made of heat-insulating material. Each heat-conducting sheet 26 has the same specifications and material. During use, when the paper bag being heated has a relatively wide sealing width, the external paper bag conveying equipment transports the paper bag with hot melt adhesive at the sealing point directly below one of the wider heat-sealing strips 8. The heat-sealing strip 8 corresponds to the hot melt adhesive area of the paper bag. The temperature sensor 10 on the heat-sealing strip 8 can transmit the detected temperature data to the temperature controller 6 in real time. The temperature controller 6 can adjust the heating power of the resistance heating strip 23 in real time based on the received temperature data to maintain the heat-sealing strip 8 at a suitable heating temperature. The PLC controller 3 controls the electric telescopic rod 4 to extend downwards. The telescopic end of the electric telescopic rod 4 drives the lifting frame 5 to move downwards. The lifting frame 5 drives the mounting rod 7 to move downwards. The mounting rod 7 drives the regulating cylinder 12 downwards via the mounting disc 11. The regulating cylinder 12 drives the heat-sealing strip 8 downwards via the heat-conducting sheet 26 until the heat-sealing strip 8 contacts the paper bag. The heat-sealing strip 8 then transfers heat to the paper bag, and the paper bag absorbs the heat. The heat is transferred to the hot melt adhesive until it melts and seals the paper bag. Because the contact area between the heat-sealing strip 8 and the paper bag is large at this point, and the hot melt adhesive is also wide, the resistance heating strip 23 requires significant power to maintain the heat-sealing strip 8 at a suitable heating temperature. When the paper bag to be heated has a narrow sealing width, the holding ball 18 is pulled upwards. The holding ball 18 moves the movable rod 19 upwards, which in turn moves the limiting block 21 upwards, compressing the spring 20. After the movable rod 19 disengages from the fixing hole 14, rotate the adjusting wheel 15. The adjusting wheel 15 drives the fixing ring 13 to rotate via the connecting column 16. The fixing ring 13 drives the adjusting cylinder 12 to rotate. The adjusting cylinder 12 drives the narrower heat-sealing strip 8 to rotate via the heat-conducting plate 26. After the narrower heat-sealing strip 8 rotates to the vertically downward position, stop rotating. Release the holding ball 18, and the movable rod 19, under the elastic force of the spring 20, enters the fixing hole 14, which is now facing upward, to fix the adjusting cylinder 12.Therefore, the replacement of the heat-sealing strip 8 can be completed quickly without the need for specific tools. The external paper bag conveying equipment transports the paper bag with hot melt adhesive at the seal to directly below one of the narrower heat-sealing strips 8. The heat-sealing strip 8 corresponds to the hot melt adhesive area of the paper bag. The PLC controller 3 controls the electric telescopic rod 4 to extend downward. The telescopic end of the electric telescopic rod 4 drives the lifting frame 5 to move downward. The lifting frame 5 drives the mounting rod 7 to move downward. The mounting rod 7 drives the adjusting cylinder 12 to move downward through the mounting disc 11. The adjusting cylinder 12 moves downward through the heat-conducting plate 26. The narrower heat-sealing strip 8 moves downwards until it contacts the paper bag. The narrower strip transfers heat to the paper bag, which in turn transfers heat to the hot melt adhesive. The hot melt adhesive melts and seals the paper bag. Because the contact area between the heat-sealing strip 8 and the paper bag is small, and the hot melt adhesive is also narrow, the resistance heating strip 23 requires less power to maintain the heat-sealing strip 8 at a suitable heating temperature. This is more energy-efficient than using a wider heat-sealing strip 8, reducing factory production costs.
[0025] Furthermore, the heating component is a resistance heating strip 23 located below the mounting rod 7. The resistance heating strip 23 has a heat insulation shell 22 with an opening at the lower end. The input end of the resistance heating strip 23 is electrically connected to the output end of the temperature controller 6. The heat insulation shell 22 can reduce the heat loss of the resistance heating strip 23.
[0026] Furthermore, a heat transfer strip 24 is provided below the resistance heating strip 23, and the heat transfer strip 24 makes frictional contact with the interior of the heat-conducting sheet 26. The heat transfer strip 24 can better transfer the heat from the resistance heating strip 23 to the heat-conducting sheet 26 and the heat-sealing strip 8.
[0027] Furthermore, the portion of the heat transfer strip 24 that contacts the heat-conducting plate 26 is arc-shaped. The arc shape of the heat transfer strip 24 increases the contact area with the heat-conducting plate 26, thereby improving the heat transfer effect.
[0028] Furthermore, the lifting assembly consists of a PLC controller 3 and an electric telescopic rod 4 mounted on the support frame 2. The telescopic end of the electric telescopic rod 4 faces downwards, and a lifting frame 5 is mounted on the lower end of the electric telescopic rod 4. A mounting rod 7 is horizontally mounted on the lifting frame 5. The input end of the electric telescopic rod 4 is electrically connected to the output end of the PLC controller 3. The telescopic end of the electric telescopic rod 4 can drive the lifting frame 5 to move up and down.
[0029] Furthermore, the fixing component is a fixing ring 13 located on the outer side of one end of the adjusting cylinder 12. The fixing ring 13 has several fixing holes 14 evenly spaced at equal angles around its circumference, corresponding to the heat-sealing strip 8. A gripping ball 18 is positioned above the lifting frame 5, and a movable rod 19 is vertically mounted on the gripping ball 18, penetrating the lifting frame 5. The movable rod 19 engages with the fixing holes 14. The gripping ball 18 facilitates pulling the movable rod 19 by hand, allowing the movable rod 19 to be inserted into the fixing holes 14 to fix the fixing ring 13.
[0030] Furthermore, a limit block 21 is provided at the lower end of the movable rod 19, and an elastic element is provided on the portion of the movable rod 19 between the limit block 21 and the lifting frame 5. The elastic element prevents the movable rod 19 from loosening due to non-human operation within the fixing hole 14.
[0031] Furthermore, the elastic element is a spring 20. The spring 20 can be easily fitted onto the movable rod 19, thereby better cooperating with the limiting block 21.
[0032] Furthermore, an adjusting wheel 15 is provided on the outer side of the fixing ring 13 via the connecting post 16, and anti-slip patterns 17 are evenly distributed around the circumference of the adjusting wheel 15 at equal angles. The anti-slip patterns 17 on the adjusting wheel 15 provide an anti-slip effect.
[0033] Furthermore, a heat insulation cover 9 is provided around the outer perimeter of the hot-press sealing strip 8, and a through groove is provided on the heat insulation cover 9 to cooperate with the temperature sensor 10. The temperature sensor 10 passes through the through groove on the heat insulation cover 9. The heat insulation cover 9 can further reduce the heat loss of the hot-press sealing strip 8, and the through groove on the heat insulation cover 9 can not affect the contact between the temperature sensor 10 and the hot-press sealing strip 8.
[0034] The working principle of the heat-sealing device for sealable paper bags provided by this utility model is as follows: In use, when the heated paper bag has a relatively wide sealing width, the external paper bag conveying equipment transports the paper bag with hot melt adhesive at the sealing point to directly below one of the wider hot-press sealing strips 8. The hot-press sealing strip 8 corresponds to the hot melt adhesive area of the paper bag. The temperature sensor 10 on the hot-press sealing strip 8 can transmit the detected temperature data to the temperature controller 6 in real time. The temperature controller 6 can adjust the heating power of the resistance heating strip 23 in real time based on the received temperature data to keep the hot-press sealing strip 8 at a suitable heating temperature. The PLC controller 3 controls the electric telescopic rod 4 to extend downwards. The telescopic end of the electric telescopic rod 4 drives the lifting frame 5 to move downwards. The lifting frame 5 drives the mounting rod 7 to move downwards. The mounting rod 7 drives the adjusting cylinder 12 through the mounting disc 11. Moving downwards, the adjusting cylinder 12, through the heat-conducting plate 26, drives the heat-sealing strip 8 downwards until it contacts the paper bag. The heat-sealing strip 8 transfers heat to the paper bag, and the paper bag transfers heat to the hot melt adhesive until the hot melt adhesive melts and seals the paper bag. Because the contact area between the heat-sealing strip 8 and the paper bag is large at this point, and the width of the hot melt adhesive is also relatively wide, the resistance heating strip 23 needs a large power to maintain the heat-sealing strip 8 at a suitable heating temperature. When the paper bag to be heated has a narrow sealing width, the holding ball 18 is pulled upwards. The holding ball 18 drives the movable rod 19 upwards, and the movable rod 19 drives the limiting block 21 upwards. The limiting block 21 compresses the spring 20 until the movable rod 19 exits through the fixing hole. After detaching from 14, rotate the adjusting wheel 15. The adjusting wheel 15 drives the fixing ring 13 to rotate via the connecting column 16. The fixing ring 13 drives the adjusting cylinder 12 to rotate. The adjusting cylinder 12 drives the narrower heat-sealing strip 8 to rotate via the heat-conducting plate 26 until the narrower heat-sealing strip 8 rotates to the vertically downward position. Then stop rotating, release the holding ball 18, and the movable rod 19 enters the fixing hole 14 with the opening facing upward under the action of the spring 20 to fix the adjusting cylinder 12. Thus, the heat-sealing strip 8 can be quickly replaced without the need for special tools. The external paper bag conveying equipment conveys the paper bag with hot melt adhesive at the seal to one of the narrower heat-sealing strips 8 directly below it, with the heat-sealing strip 8 facing the hot melt adhesive area of the paper bag. In response, the PLC controller 3 controls the electric telescopic rod 4 to extend downwards. The telescopic end of the electric telescopic rod 4 drives the lifting frame 5 to move downwards. The lifting frame 5 drives the mounting rod 7 to move downwards. The mounting rod 7 drives the adjusting cylinder 12 to move downwards via the mounting disc 11. The adjusting cylinder 12 drives the narrower heat-sealing strip 8 to move downwards via the heat-conducting plate 26 until the narrower heat-sealing strip 8 contacts the paper bag. The narrower heat-sealing strip 8 transfers heat to the paper bag, and the paper bag transfers heat to the hot melt adhesive until the hot melt adhesive melts and seals the paper bag. Because the contact area between the heat-sealing strip 8 and the paper bag is small at this time, and the width of the hot melt adhesive is also narrow, the resistance heating strip 23 only needs a small power to keep the heat-sealing strip 8 at a suitable heating temperature.Compared to wider heat-sealing strips, this method saves more energy and reduces factory production costs.
[0035] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A heat-sealing device for sealable paper bags, comprising a heat-sealing worktable and a support frame disposed on the heat-sealing worktable, characterized in that: A lifting assembly is provided on the support frame. The lifting assembly is equipped with a temperature controller and a mounting rod, which is horizontally positioned. Mounting discs are provided at both ends of the mounting rod. Adjusting cylinders are rotatably mounted on the mounting discs. Several mounting slots are evenly spaced at equal angles on the adjusting cylinders. Heat-conducting sheets are provided in each of the mounting slots. Hot-press sealing strips of different widths are provided on the outer sides of the heat-conducting sheets. Temperature sensors are provided on the sides of the hot-press sealing strips. The output end of the temperature sensors is electrically connected to the input end of the temperature controller. A fixing assembly is provided at one end of the outer side of the adjusting cylinder. A heating assembly that frictionally engages with the heat-conducting sheets is provided inside the adjusting cylinder and is fixed to the mounting rod.
2. The heat-sealing equipment for sealable paper bags according to claim 1, characterized in that: The heating component is a resistance heating strip located below the mounting rod. The resistance heating strip has a heat insulation shell with an opening at the lower end. The input end of the resistance heating strip is electrically connected to the output end of the temperature controller.
3. The heat-sealing equipment for sealable paper bags according to claim 2, characterized in that: A heat transfer strip is provided below the resistance heating strip, and the heat transfer strip is in frictional contact with the inside of the heat-conducting sheet.
4. The heat-sealing equipment for sealable paper bags according to claim 3, characterized in that: The portion of the heat transfer strip that contacts the heat-conducting sheet is arc-shaped.
5. The heat-sealing equipment for sealable paper bags according to claim 1, characterized in that: The lifting assembly consists of a PLC controller and an electric telescopic rod mounted on a support frame. The telescopic end of the electric telescopic rod faces downwards. A lifting frame is provided at the lower end of the electric telescopic rod, and a mounting rod is horizontally mounted on the lifting frame. The input end of the electric telescopic rod is electrically connected to the output end of the PLC controller.
6. The heat-sealing equipment for sealable paper bags according to claim 5, characterized in that: The fixing component is a fixing ring set on the outer side of one end of the adjusting cylinder. The fixing ring has a number of fixing holes at equal angles around its circumference that correspond to the hot-press sealing strip. A gripping ball is set above the lifting frame. A movable rod that penetrates the lifting frame is vertically set on the gripping ball, and the movable rod cooperates with the fixing holes.
7. The heat-sealing equipment for sealable paper bags according to claim 6, characterized in that: The lower end of the movable rod is provided with a limit block, and the part of the movable rod between the limit block and the lifting frame is provided with an elastic element.
8. The heat-sealing equipment for sealable paper bags according to claim 7, characterized in that: The elastic element is a spring.
9. The heat-sealing equipment for sealable paper bags according to claim 6, characterized in that: An adjusting wheel is provided on the outer side of the fixing ring via a connecting post, and anti-slip textures are evenly distributed around the circumference of the adjusting wheel at equal angles.
10. The heat-sealing equipment for sealable paper bags according to claim 1, characterized in that: A heat insulation cover is provided around the outer perimeter of the hot-press sealing strip, and a through groove is provided on the heat insulation cover to cooperate with the temperature sensor. The temperature sensor passes through the through groove on the heat insulation cover.