High-speed bag making device and bag making method thereof

Abstract

The invention discloses a high-speed bag making device and a bag making method thereof, and relates to the technical field of bag making production. The bag body is continuously transmitted, the heat-sealing cutter is used for periodically heat-sealing the bag body, the driving mechanism is used for driving the heat-sealing cutter to periodically ascend and descend, the heat-sealing cutter is provided with an electric heating rod, a heat conduction layer and a heat dissipation plate are arranged on the two side faces of the heat-sealing cutter, an outer cover is further fixedly installed, and the interior of the outer cover is divided into an air inlet cavity and a heat absorption cavity through a partition plate; the partition plate is provided with an air injection hole and a wide dispersion opening, radiating fins of the radiating plate extend into the heat absorption cavity, an inclined air outlet hole of a bottom plate of the outer cover faces a knife edge of the heat sealing knife piece, a sensing heating piece is installed at the side end of the outer cover, and the outer cover is connected with air supply equipment through an air pipe, an electric control valve and an external connection hose. Bag making is achieved through continuous links such as preheating debugging, precise feeding, heat sealing operation and air injection separation. The problem of film adhesion during heat sealing is effectively solved, the heat sealing strength effect is guaranteed, and the energy utilization efficiency of heat sealing bag making is improved.

Description

Technical Field

[0001] This invention relates to the field of bag manufacturing technology, and in particular to a high-speed bag making device and a bag making method thereof. Background Technology

[0002] In the packaging manufacturing industry, the high speed and efficiency of bag-making technology have become core trends in industry development. Especially in large-scale applications such as food, daily chemicals, and express packaging, the market places stringent demands on the production efficiency, finished product qualification rate, and energy utilization of bag-making equipment. Currently, mainstream high-speed bag-making devices mainly rely on heat-sealing blades to periodically heat-seal plastic films. However, in practical applications, many technical bottlenecks still exist, severely restricting the stability and efficiency of bag-making operations.

[0003] First, the problem of film adhesion during the heat-sealing process is difficult to solve. After the heat-sealing blade is heated to a high temperature by an electric heating rod, it comes into contact with the plastic film to complete the heat seal. However, because the film is in a molten state after heat sealing, it is extremely prone to sticking to the blade edge. Traditional bag-making equipment often uses mechanical scraping or natural cooling separation to address this problem. Mechanical scraping easily causes film damage and deformation of the heat-sealed edges, leading to an increased defect rate. Natural cooling separation requires a long cooling time, directly reducing the bag-making speed and failing to meet the demands of high-speed production.

[0004] In addition, existing technologies introduce airflow blowing to separate the adhesive film, but the airflow directly uses a normal temperature air source. Low temperature airflow contact with the heat-sealed film can easily cause the heat-sealed layer to shrink, thus damaging the heat-sealing strength.

[0005] In summary, effectively solving the technical problems of film adhesion and low-temperature air blowing separation leading to a decrease in heat sealing strength during the heat sealing process has become an urgent challenge to overcome. Summary of the Invention

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention provides a high-speed bag-making device, including a continuously driven bag body, a heat-sealing blade for periodically heat-sealing the bag body, and a drive mechanism for periodically lifting and lowering the heat-sealing blade. The heat-sealing blade is equipped with a heating rod for heating the heat-sealing blade, and heat-conducting layers are provided on both sides of the heat-sealing blade. A heat dissipation plate is also attached to the heat-conducting layers. An outer cover with openings facing the heat-sealing blade is fixedly installed on both sides of the heat-sealing blade. Inside the outer cover, there is a horizontal partition plate, an air inlet chamber above the partition plate, and a heat absorption chamber below the partition plate. The partition plate has multiple air injection holes evenly distributed and wide openings vertically communicating with the air injection holes. The heat dissipation plate has multiple heat dissipation fins extending into the heat absorption chamber.

[0007] The outer casing's bottom plate has multiple evenly spaced, angled air outlets that communicate with the heat absorption chamber. The air outlets face the cutting edge of the heat-sealing blade. Each side of the outer casing is independently equipped with a sensing and heating element, including a temperature sensing module for monitoring the temperature of the bottom area of ​​the heat absorption chamber and a heating module for heating the gas in that area. An air pipe is connected to the outside of the outer casing, communicating with its air inlet chamber. An electrically controlled valve is located upstream of the air pipe, and upstream of the valve is connected to the air supply equipment via an external flexible hose.

[0008] As a preferred technical solution of the bag making device of the present invention: the heat sealing knife is provided with a transverse through-type heating rod groove, and the electric heating rod is installed at the position of the heating rod groove.

[0009] As a preferred embodiment of the bag-making device of the present invention: a sealing ring is clamped between the outer cover and the side of the heat-sealing blade, the size of the sealing ring being larger than the size of the heat-conducting layer. First mounting holes are provided on both sides of the outer cover, and second mounting holes are provided on the sealing ring. Threaded blind holes are provided on the side of the heat-sealing blade. The first mounting holes, second mounting holes, and threaded blind holes are aligned and fastened with screws. Edge mounting holes for installing a sensing heating element are provided on the side of the outer cover.

[0010] As a preferred technical solution of the bag making device of the present invention: the heat-conducting layer is made of heat-conducting silicone grease or heat-conducting silicone, and the specifications and dimensions of the heat-conducting layer are matched with the specifications and dimensions of the opening of the outer cover facing the heat-sealing knife.

[0011] As a preferred technical solution of the bag making device of the present invention: the air inlet cavity and the heat absorption cavity of the outer cover are both sprayed with heat insulation coating, and a rubber pad is installed in the heat absorption cavity directly opposite the inner wall of the heat dissipation plate, and the rubber pad abuts against the heat dissipation fins.

[0012] As a preferred technical solution of the bag making device of the present invention: the top of the outer cover is provided with an air nozzle that communicates with the air inlet chamber, and the end of the air pipe is connected to the air nozzle.

[0013] As a preferred technical solution of the bag making device of the present invention: the dispersing wide opening is a frustoconical hole, the top diameter of the dispersing wide opening is the same as the diameter of the air injection hole, and the bottom diameter of the dispersing wide opening is larger than its top diameter.

[0014] This invention provides a bag-making method, comprising the following: Step 1: Preheating and debugging of the device: Start the electric heating rod to heat the heat sealing blade to the preset heat sealing temperature, simultaneously start the gas supply equipment and maintain the preset gas pressure through the external hose to reserve gas source, and turn on the temperature sensing module to monitor the gas temperature at the bottom of the heat absorption chamber in real time.

[0015] Step 2, Precise Bag Feeding: Start the conveyor mechanism to drive the bag to move at a constant speed, so that the heat-sealing position of the bag is precisely aligned with the cutting edge of the heat-sealing blade, completing the initial positioning of the heat-sealing operation.

[0016] Step 3: Heat sealing with heat sealing blade: The drive mechanism drives the heat sealing blade to descend periodically. After the blade contacts the bag body, the heat transferred by the heating rod completes the heat sealing of the bag film. At the same time, the heat from the heat sealing blade is transferred to the heat dissipation plate through the heat conduction layer, and then introduced into the heat absorption chamber for temporary storage through the heat dissipation fins.

[0017] Step 4: Jet command triggering: After heat sealing is completed, the control system issues an ascent command. The electronic control valve receives the signal and opens the air passage. External gas enters the outer casing air inlet chamber through the air pipe, starting the jet separation process.

[0018] Step 5: Uniform gas distribution: The gas in the intake chamber is evenly diffused to all areas of the heat absorption chamber through the air injection holes and the wide dispersion opening of the partition plate, and completes heat exchange with the heat stored in the chamber.

[0019] Step 6, Gas Temperature Control: The temperature sensing module continuously monitors the gas temperature at the bottom of the heat absorption chamber. If the preset value is not reached, the heating module immediately replenishes the gas in that area to ensure that the airflow temperature matches the heat sealing temperature.

[0020] Step 7, Angled Air Separation: Temperature-controlled gas is sprayed from the angled air outlet towards the blade. The high-speed airflow separates the easily sticky film of the bag after heat sealing without affecting the heat sealing effect.

[0021] Step 8: Equipment Reset Preparation: After the heat-sealing knife rises and resets, the electric control valve closes the air circuit, the air supply equipment continues to maintain the preset air pressure, and the sensing heating element maintains temperature monitoring, waiting for the next round of operation instructions.

[0022] Step 9, Continuous Bag Making: Repeat the above steps to maintain the continuous operation mode of heat sealing and air jet separation, so as to meet the production needs of high-speed bag making.

[0023] Compared with existing technologies, the beneficial effects of this invention are: This invention uses an angled air outlet to blow a high-speed airflow that matches the heat-sealing temperature onto the cutting edge. This not only quickly separates the molten film but also avoids the shrinkage of the heat-sealing layer and the damage to the heat-sealing strength caused by low-temperature airflow, thus significantly reducing the defect rate of finished products and ensuring the stability of heat-sealing quality.

[0024] In this invention, excess heat from the heat-sealing blade during operation is transferred to the heat dissipation plate via the heat-conducting layer, and then introduced into the heat absorption cavity through the heat dissipation fins to preheat the airflow. Combined with the heat insulation coating, heat loss within the cavity is reduced. Only when the airflow temperature is below standard is a small amount of heat supplemented by the heating module, which reduces ineffective energy consumption and significantly improves the energy utilization efficiency of bag making operations. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the bag-making device of the present invention.

[0026] Figure 2 for Figure 1 A magnified structural diagram of part A in the middle.

[0027] Figure 3 for Figure 2 A magnified structural diagram of section B in the middle.

[0028] Figure 4 This is a schematic diagram of the structure of the outer cover and related components installed on the heat-sealing knife part in this invention.

[0029] Figure 5 This is a schematic diagram showing the disassembly structure of the relevant components on both sides of the heat-sealing blade in this invention.

[0030] Figure 6 for Figure 5 A magnified structural diagram of part C in the middle.

[0031] Figure 7 for Figure 5 A magnified structural diagram of part D in the middle.

[0032] The components are as follows: 1-Bag body; 2-Drive mechanism; 3-Heat sealing blade, 301-Blade edge, 302-Heating rod groove, 303-Threaded blind hole, 304-Heating rod; 4-Heat-conducting layer; 5-Heat dissipation plate, 501-Heat dissipation fins; 6-Outer cover, 601-Partition plate, 6011-Air injection hole, 6012-Dispersion wide opening, 602-Air inlet chamber, 603-Heat absorption chamber, 604-Heat insulation coating, 605-Angled air outlet, 606-Air inlet nozzle, 607-Side mounting hole, 608-Rubber pad, 609-First mounting hole; 7-Sealing ring, 701-Second mounting hole; 8-Sensing heating element, 801-Temperature sensing module, 802-Heating module; 9-Air pipe; 10-Electrically controlled valve; 11-External connecting hose; 12-Fasting screw. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0034] Example 1: The high-speed bag-making device of the present invention mainly consists of a bag body 1, a drive mechanism 2, a heat-sealing blade 3, a heat-conducting layer 4, a heat dissipation plate 5, an outer cover 6, a sealing ring 7, a sensing and heating element 8, an air pipe 9, an electric control valve 10, an external connecting hose 11, and fastening screws 12. The structure and function of each component are as follows: like Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6The heat-sealing blade 3 is the core component for periodically heat-sealing the bag body 1, and is driven by the drive mechanism 2 to achieve periodic lifting and lowering movements. The heat-sealing blade 3 has a horizontally penetrating heating rod groove 302, within which an electric heating rod 304 is installed. The electric heating rod 304 provides a heating source for the heat-sealing blade 3 and can monitor the temperature of the heat-sealing blade 3 in real time. The bottom of the heat-sealing blade 3 is the cutting edge 301, which is the working part that directly contacts the bag body 1 and completes the heat sealing. The side of the heat-sealing blade 3 has threaded blind holes 303 for use with fastening screws 12 to securely install the outer cover 6. Heat-conducting layers 4 are attached to both sides of the heat-sealing blade 3 to conduct heat from the heat-sealing blade 3 to the heat dissipation plate 5.

[0035] like Figure 1 , Figure 6 The thermal conductive layer 4 is made of thermally conductive grease or thermally conductive silicone. Its specifications and dimensions are matched with the opening specifications and dimensions of the outer cover 6 facing the heat sealing blade 3. It is tightly attached between the two sides of the heat sealing blade 3 and the heat sink 5, so as to play a role in efficient heat conduction.

[0036] like Figure 6 , Figure 7 The heat sink 5 is attached to the heat conduction layer 4. The heat sink 5 is provided with multiple heat dissipation fins 501. The heat dissipation fins 501 are vertically distributed and extend into the heat absorption cavity 603 of the outer cover 6. This can greatly reduce the airflow resistance of the vertical flow and further transfer the heat conducted by the heat sealing blade 3 to the heat sink 5 to the gas in the heat absorption cavity 603.

[0037] like Figure 4 , Figure 5 , Figure 6 The outer cover 6 has an opening facing the heat-sealing blade 3 and is fixedly installed on both sides of the heat-sealing blade 3, serving as the core carrier for airflow circulation and heat storage. A sealing ring 7 is sandwiched between the outer cover 6 and the side of the heat-sealing blade 3. The size of the sealing ring 7 is larger than that of the heat-conducting layer 4, serving to seal and prevent air leakage. First mounting holes 609 are provided on both sides of the outer cover 6, and second mounting holes 701 are provided on the sealing ring 7. After the first mounting holes 609 and the second mounting holes 701 are aligned with the threaded blind holes 303 of the heat-sealing blade 3, the outer cover 6, the sealing ring 7, and the heat-sealing blade 3 are fixed by fastening screws 12. The outer cover 6 also has edge mounting holes 607 on its side for installing the sensing heating element 8.

[0038] like Figure 3 , Figure 6 , Figure 7The outer casing 6 has a horizontal partition plate 601 inside, dividing the interior of the outer casing 6 into an upper air intake chamber 602 and a lower heat absorption chamber 603. The partition plate 601 has multiple evenly spaced air injection holes 6011 and vertically penetrating dispersion openings 6012. The dispersion openings 6012 are frustoconical holes, with a top diameter the same as the air injection hole 6011 and a bottom diameter larger than the top diameter, which promotes gas flow in various areas of the heat absorption chamber 603. Both the air intake chamber 602 and the heat absorption chamber 603 have their walls coated with a heat-insulating coating 604 to reduce heat loss within the chambers. A rubber pad 608 is installed in the heat absorption chamber 603 directly opposite the inner wall of the heat sink 5. The rubber pad 608 abuts against the heat sink fins 501, ensuring close contact between the heat sink 5 and the heat-conducting layer 4, thus improving heat conduction efficiency.

[0039] like Figure 2 , Figure 3 , Figure 7 The outer cover 6 has multiple evenly spaced oblique air outlets 605 on its bottom plate, with the air outlets 605 facing the blade edge 301 on the bottom side of the heat-sealing blade 3. The top of the outer cover 6 has an air inlet 606 communicating with the air inlet chamber 602. The end of the air pipe 9 is connected to the air inlet 606, enabling the delivery of external gas to the air inlet chamber 602. The other end of the air pipe 9 is connected to an electric control valve 10, located upstream of the air pipe 9, used to control the opening and closing of the air path. Upstream of the valve 10, it is connected to an external connecting hose 11, which continuously maintains a preset air pressure on the external connecting hose 11.

[0040] like Figure 3 , Figure 4 , Figure 6 , Figure 7 The sensing and heating element 8 is independently installed at the edge mounting holes 607 on both sides of the outer cover 6, and includes a temperature sensing module 801 and a heating module 802. The temperature sensing module 801 is used to monitor the gas temperature at the bottom of the heat absorption chamber 603 (the area near the oblique gas outlet 605). If the temperature sensing module 801 detects that the gas temperature at the bottom of the heat absorption chamber 603 is not up to standard, the heating module 802 will heat the gas in that area to make the temperature of the ejected gas flow close to the heat sealing temperature.

[0041] Example 2: The bag-making method designed in this invention relies on the coordinated action of the heat-sealing blade and the airflow-assisted separation to achieve high-speed, non-sticky bag-making heat-sealing operation. The specific steps are as follows: Step 1: Equipment Preheating Preparation like Figure 5 , Figure 6 , Figure 7The heating rod 304 is installed in the heating rod groove 302 of the heat-sealing knife 3, and the heating rod 304 is activated to preheat the heat-sealing knife 3 until it reaches the preset bag-making heat-sealing temperature (the heat-sealing knife 3 also needs to be equipped with a temperature sensor to monitor the body temperature of the heat-sealing knife 3). At the same time, the external air supply equipment is activated, and the air supply equipment continuously maintains the preset air pressure through the external connecting hose 11 to reserve air source for subsequent air jet operation. The temperature sensing module 801 of the sensing heating element 8 is activated in advance to start real-time monitoring of the gas temperature in the bottom area of ​​the heat absorption chamber 603.

[0042] Step 2: Bag conveyor feeding like Figure 1 , Figure 2 The conveying mechanism of the bag making production line is started, so that the bag body 1 is continuously and uniformly transmitted to the working area below the heat sealing knife 3, ensuring that the heat sealing position of the bag body 1 is precisely aligned with the cutting edge 301 of the heat sealing knife 3, thus preparing for periodic heat sealing operations.

[0043] Step 3: Heat sealing of cutting tools like Figure 1 , Figure 5 , Figure 6 , Figure 7 The drive mechanism 2 receives instructions from the bag-making control system and drives the heat-sealing blade 3 to perform a periodic downward movement. After the blade 301 of the heat-sealing blade 3 contacts the heat-sealing position of the bag body 1, the heat transferred by the heating rod 304 completes the heat-sealing process of the film on the bag body 1. During this process, the heat of the heat-sealing blade 3 is quickly transferred to the heat dissipation plate 5 through the heat-conducting layers 4 (thermal conductive grease or thermal conductive silicone material) on both sides. The heat dissipation fins 501 on the heat dissipation plate 5 extend vertically into the heat absorption chamber 603. The vertically distributed structure of the heat dissipation fins 501 greatly reduces airflow resistance, and the heat is smoothly conducted into the heat absorption chamber 603 and temporarily stored. A sealing ring 7 is provided between the outer cover 6 and the side of the heat-sealing blade 3. The size of the sealing ring 7 is larger than that of the heat-conducting layer 4.

[0044] Step 4: Jet Separation Trigger like Figure 2 , Figure 3 , Figure 7 When the cutting edge 301 of the heat-sealing blade 3 reaches the lowest point of movement and completes the heat sealing, and the control system sends an upward command to the drive mechanism 2 for the heat-sealing blade 3, the electric control valve 10 receives the signal and opens. The gas stored in the external air supply equipment enters the air intake chamber 602 of the outer cover 6 through the external connecting hose 11, air pipe 9, and air inlet 606, and starts the jet separation process.

[0045] Step 5: Gas Diversion and Heat Pre-storage like Figure 3 , Figure 6 , Figure 7The gas entering the intake chamber 602 is evenly diffused into the heat absorption chamber 603 through the uniformly spaced air injection holes 6011 on the partition plate 601 and the vertically penetrating dispersion openings 6012 (conical hole structure, with a bottom diameter larger than the top diameter). The structural design of the dispersion openings 6012 promotes gas flow in all areas of the heat absorption chamber 603, ensuring uniform gas distribution. Simultaneously, the heat transferred from the heat-sealing blade 3 to the heat dissipation plate 5 is further transferred to the gas within the heat absorption chamber 603 through the heat dissipation fins 501. The intake chamber 602 also stores some of the heat conducted by the heat-sealing blade 3. The rubber pad 608 on the inner wall of the heat absorption chamber 603 abuts against the heat dissipation fins 501, ensuring close contact between the heat dissipation plate 5 and the heat-conducting layer 4, thus improving heat transfer efficiency.

[0046] Step Six: Gas Temperature Control like Figure 3 , Figure 7 The temperature sensing module 801 of the heating element 8 continuously monitors the gas temperature at the bottom of the heat absorption chamber 603 (the area near the oblique air outlet 605). If the gas temperature is detected to be below the preset value that matches the heat sealing temperature, the heating module 802 immediately starts to heat the gas in the bottom area of ​​the heat absorption chamber 603. The walls of the air inlet chamber 602 and the heat absorption chamber 603 of the outer cover 6 are both coated with a heat insulation coating 604, which can effectively reduce heat loss in the chamber and maintain a stable gas temperature.

[0047] Step 7: Oblique jet separation like Figure 2 , Figure 3 After temperature regulation, the gas is ejected under pressure through the evenly spaced oblique air outlets 605 on the bottom plate of the outer cover 6. The air outlets 605 are directly aligned with the cutting edge 301 of the heat-sealing blade 3. The high-speed airflow then separates the film of the bag 1, which is about to stick together after heat sealing. The duration of a single air jet is determined by the rising speed of the heat-sealing blade 3. The higher the rising speed of the heat-sealing blade 3, the shorter the duration of a single air jet, ensuring that the airflow can fully complete the film separation action. Furthermore, because the airflow temperature is close to the heat-sealing temperature, it will not affect the heat-sealing effect of the bag 1.

[0048] Step 8: High-speed bag making in a continuous cycle like Figure 1 , Figure 2 , Figure 5 , Figure 6 After the heat-sealing blade 3 completes one lifting and lowering heat sealing and air separation cycle (air outlet 605 stops venting), the drive mechanism 2 drives the heat-sealing blade 3 to return to its initial position, awaiting the command for the next heat sealing cycle. During this process, the air supply equipment continuously provides a preset air pressure to the external connecting hose 11, and the sensing heating element 8 continuously monitors and regulates the gas temperature at the bottom of the heat absorption chamber 603, enabling the entire device to enter a continuous heat sealing-separation cycle operation mode, achieving the production requirements of high-speed bag making.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-speed bag making device, comprising a continuously driven bag body (1), a heat sealing cutter (3) for periodically heat sealing the bag body (1), and a driving mechanism (2) for driving the heat sealing cutter (3) to perform periodic lifting movement, the heat sealing cutter (3) is provided with an electric heating rod (304) for heating the heat sealing cutter (3), characterized in that: the heat sealing cutter (3) is provided with a heat conducting layer (4) on both sides, and a heat dissipation plate (5) is arranged at the position of the heat conducting layer (4); the heat sealing cutter (3) is fixedly installed with an outer cover (6) with an opening facing the heat sealing cutter (3) on both sides, the outer cover (6) is provided with a horizontal partition plate (601), an air inlet cavity (602) above the partition plate (601), and a heat absorption cavity (603) below the partition plate (601), the partition plate (601) is uniformly provided with a plurality of injection holes (6011) and a dispersion wide mouth (6012) vertically penetrating the injection holes (6011), and the heat dissipation plate (5) is provided with a plurality of heat dissipation fins (501) extending into the heat absorption cavity (603); the bottom plate of the outer cover (6) is uniformly provided with a plurality of inclined air outlet holes (605) communicating with the heat absorption cavity (603), and the air outlet direction of the inclined air outlet holes (605) is opposite to the position of the blade edge (301) on the bottom side of the heat sealing cutter (3); the outer cover (6) is independently provided with a sensing heating element (8) at both side ends, the sensing heating element (8) comprises a temperature sensing module (801) for monitoring the temperature of the bottom area of the heat absorption cavity (603) and a heating module (802) for heating the gas at the bottom area of the heat absorption cavity (603); the outer cover (6) is connected with an air pipe (9) communicating with the air inlet cavity (602) thereof, an electric control valve (10) is arranged on the upstream of the air pipe (9), and the electric control valve (10) is connected with a gas supply device through an outer connecting hose (11) on the upstream thereof.

2. The high-speed bag making device according to claim 1, characterized in that: the heat sealing cutter (3) is provided with a transversely penetrating heating rod groove (302), and the electric heating rod (304) is installed at the position of the heating rod groove (302).

3. The high-speed bag making device according to claim 1, characterized in that: a sealing ring (7) is clamped between the outer cover (6) and the side surface of the heat sealing cutter (3), and the size of the sealing ring (7) is larger than that of the heat conducting layer (4); first mounting holes (609) are formed on both side ends of the outer cover (6), second mounting holes (701) are formed on the sealing ring (7), and threaded blind holes (303) are formed on the side surface of the heat sealing cutter (3), the first mounting holes (609), the second mounting holes (701), and the threaded blind holes (303) are aligned and mounted with fastening screws (12); side mounting holes (607) are formed on the side ends of the outer cover (6) for mounting the sensing heating element (8).

4. The high-speed bag making device according to claim 1, characterized in that: the heat conducting layer (4) is made of heat conducting silicone grease or heat conducting silica gel material, and the size of the heat conducting layer (4) is matched with the size of the opening of the outer cover (6) facing the heat sealing cutter (3). ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 5. The high-speed bag making device according to claim 1, characterized in that: The wall surface of the air inlet cavity (602) and the heat absorption cavity (603) of the outer cover (6) is sprayed with a heat insulation coating (604), and a rubber pad (608) is installed at the position of the inner wall of the heat absorption cavity (603) opposite to the heat dissipation plate (5), and the rubber pad (608) abuts against the heat dissipation fins (501).

6. The high-speed bag making device according to claim 1, characterized in that: The top of the outer cover (6) is provided with an air nozzle (606) in communication with the air inlet cavity (602), and the air pipe (9) is connected to the air nozzle (606) at the end.

7. The high-speed bag making device according to claim 1, characterized in that: The dispersion wide opening (6012) is a frustum hole, the top surface diameter size of the dispersion wide opening (6012) is the same as the diameter size of the air injection hole (6011), and the bottom surface diameter size of the dispersion wide opening (6012) is larger than the top surface diameter size.

8. A method of making a bag, characterized by, The high-speed bag making device according to any one of claims 1 to 7, comprising the following contents: Link one, start the electric heating rod (304) to heat the heat sealing cutter (3) to the preset heat sealing temperature, simultaneously start the gas supply equipment and maintain the preset air pressure through the outer connected hose (11) to reserve the gas source, the temperature sensing module (801) is opened and the gas temperature at the bottom of the heat absorption cavity (603) is monitored in real time; Link two, start the conveying mechanism to drive the bag body (1) to continuously and uniformly drive, so that the heat sealing position of the bag body (1) is accurately corresponding to the cutting edge (301) of the heat sealing cutter (3), and the pre-positioning of the heat sealing operation is completed; Link three, the driving mechanism (2) drives the heat sealing cutter (3) to periodically descend, after the cutting edge (301) contacts the bag body (1), the heat sealing of the bag body (1) is completed by relying on the heat transferred by the electric heating rod (304), at the same time, the heat of the heat sealing cutter (3) is transmitted to the heat dissipation plate (5) through the heat conduction layer (4), and then introduced into the heat absorption cavity (603) through the heat dissipation fins (501) for temporary storage; Link four, after the heat sealing is completed, the control system issues a rising instruction, the electric control valve (10) receives the signal and opens the gas path, the external gas enters the air inlet cavity (602) of the outer cover (6) through the air pipe (9), and the jet separation process is started; Link five, the gas in the air inlet cavity (602) is uniformly diffused to each area of the heat absorption cavity (603) through the air injection hole (6011) and the dispersion wide opening (6012) of the partition plate (601), and the heat exchange with the heat stored in the cavity is completed; Link six, the temperature sensing module (801) continuously monitors the gas temperature at the bottom of the heat absorption cavity (603), if the preset value is not reached, the heating module (802) immediately heats the gas in this area, so as to ensure that the gas flow temperature matches the heat sealing temperature; Link seven, the temperature controlled gas is sprayed from the oblique air outlet hole (605) to the cutting edge (301), and the high speed gas flow separates the film of the bag body (1) which is easy to adhere after heat sealing; Link eight, after the heat sealing cutter (3) is raised and reset, the electric control valve (10) closes the gas path, the gas supply equipment continuously maintains the preset air pressure, the sensing heating element (8) maintains temperature monitoring, and waits for the next operation instruction. Link nine, repeat the above links, so that the device to keep hot sealing and jet separation mode of continuous operation, to achieve high-speed production needs of bag.

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