A hot cutting machine for PE film processing

Abstract

The application belongs to the technical field of PE film processing, and discloses a hot cutting machine for PE film processing, which comprises a workbench, a rack fixedly installed at the middle of the top end of the workbench, support feet fixedly installed at the positions of the four corners of the bottom end of the workbench, an oil storage tank fixedly installed at the middle of the rack, and extension frames fixedly installed at the left and right sides of the oil storage tank. The application solves the problem of difficulty in cutting off the PE film caused by uneven temperature, and converts the downward pressure during cutting into the automatic lifting of the supporting plates through the conversion of the connecting rods. After the cutting is completed, the automatic lifting of the cutting knife is converted into the automatic lowering of the supporting plates. When the cutting knife is adhered to the PE film and the PE film is lifted upward, the downward pressure provided by the two supporting plates can remove the adhesion, effectively avoiding the problem that the traditional device needs manual assistance for removal, and the whole process is automatically completed without manual assistance to avoid the risk of scalding, and the hot cutting efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of PE film processing technology, specifically a hot cutting machine for PE film processing. Background Technology

[0002] PE protective film is the simplest structural polymer organic compound and the most widely used polymer material in the world today. PE protective film uses special polyethylene (PE) plastic film as its base material and is classified into high-density polyethylene, medium-density polyethylene, and low-density polyethylene protective films according to their density. The biggest advantage of PE protective film is that it protects products from contamination, corrosion, and scratches during production, processing, transportation, storage, and use, preserving their original smooth and glossy surface, thereby improving product quality and market competitiveness.

[0003] After processing, PE film is usually designed in rolls for easy transportation and storage. Larger rolls of PE film are often cut into smaller pieces using equipment to facilitate splitting. The main equipment used is a hot cutting machine. A conventional hot cutting machine mainly consists of a transport component and a cutting component. The transport component is mainly used for conveying the PE film, while the cutting component is used for cutting the PE film. Generally, a heated hot cutting blade is used to cut the PE film. Due to the high temperature of the hot cutting blade, the PE film is prone to sticking to the top of the hot cutting blade during the upward movement after cutting. This requires manual assistance to remove, which not only increases the risk of burns to operators but also affects cutting efficiency.

[0004] The cutting process of PE film mainly utilizes the cutting force provided by the downward movement of a hot cutting blade to cut the PE film. In existing technologies, the hot cutting blade is mainly moved up and down by means of a cylinder or motor. However, when using this method to move the hot cutting blade down, the working principle of the cylinder or motor limits the output power to be released to its maximum value instantly, requiring a certain acceleration time. This results in a slow downward speed of the hot cutting blade, leading to a slow cutting speed, which seriously affects the cut surface of the PE film and causes the edges of the PE film to curl, significantly impacting the cutting quality. Summary of the Invention

[0005] The purpose of this invention is to provide a hot cutting machine for PE film processing to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a hot cutting machine for PE film processing, comprising a worktable, a frame fixedly installed at the center of the top of the worktable, support feet fixedly installed at the four corners of the bottom of the worktable, an oil tank fixedly installed at the center of the frame, extension frames fixedly installed on the left and right sides of the oil tank, slots provided near the bottom of the two extension frames, a temporary storage tube fixedly installed at the bottom of the oil tank, a piston plate movably sleeved inside the temporary storage tube, a piston rod fixedly installed at the bottom of the piston plate, the bottom end of the piston rod penetrating the bottom end of the temporary storage tube and fixedly installed with a pressure plate, a hot cutting assembly fixedly installed at the bottom of the pressure plate, an anti-sticking component provided at the bottom of the hot cutting assembly, the anti-sticking component being located above the worktable, heat-conducting oil stored inside the oil tank, the hot cutting assembly comprising a three-way pipe, heating elements equally spaced inside the three-way pipe, heat-conducting oil also stored inside the three-way pipe, and one end of the anti-sticking component being movably engaged with the slot.

[0007] Before actual use, the device should be placed on a flat ground using the support feet at the bottom of the workbench. At the same time, the external conveyor should be used in conjunction with the workbench, that is, the external conveyor belt should be used to release the PE film so that it passes through the workbench at a uniform speed to achieve the transfer of the PE film. During the transfer process, the PE film should be kept from tilting or shifting to ensure the smooth hot cutting.

[0008] As a further technical solution of the present invention, a first reset spring located inside the temporary storage tube is movably sleeved above the outer side of the piston rod, and a second reset spring located below the temporary storage tube is movably sleeved below the outer side of the piston rod. The upper and lower ends of the first reset spring are fixedly connected to the bottom end of the piston plate and the bottom end of the inner cavity of the temporary storage tube, respectively. The upper and lower ends of the second reset spring are fixedly connected to the bottom end of the temporary storage tube and the top end of the pressure plate, respectively.

[0009] As a further technical solution of the present invention, an oil supply pipe is fixedly connected to the left side of the oil storage tank, and an oil return pipe is fixedly connected to the right end of the oil storage tank. Both the oil supply pipe and the oil return pipe are located near the bottom of the oil storage tank. A one-way valve is installed inside both the oil supply pipe and the oil return pipe. The other ends of the oil supply pipe and the oil return pipe are respectively connected to the left and right sides of the temporary storage pipe near the bottom.

[0010] As a further technical solution of the present invention, the one-way valve inside the oil delivery pipe and the one-way valve located inside the return oil pipe are respectively directed to open inward and close outward, and open outward and close inward.

[0011] Before the PE membrane is heat-cut, the one-way valve inside the oil supply pipe can be opened and the one-way valve inside the return oil pipe can be closed. At this time, the heat transfer oil inside the oil storage tank can be injected into the bottom of the temporary storage pipe through the oil supply pipe. As the heat transfer oil is injected, the piston plate is pressured and rises. At this time, the first return spring is stretched and the second return spring is compressed. When the piston plate moves to the position limit, the one-way valve of the oil supply pipe is closed to wait for the PE membrane to be heat-cut.

[0012] As a further technical solution of the present invention, the hot cutting assembly also includes a cutting blade located below the three-way pipe. The cutting blade has an oil storage cavity inside. The left and right ends of the three-way pipe are fixedly connected to a second branch pipe, and the other end of the second branch pipe is connected to the top end of the cutting blade.

[0013] As a further technical solution of the present invention, the middle part of the bottom end of the three-way pipe is fixedly connected to a first branch pipe, the other end of the first branch pipe is connected to the middle part of the top end of the cutting blade, and the cutting blade is in the shape of a trapezoid.

[0014] Meanwhile, before the hot cutting operation, the electric heating tube inside the three-way pipe can be turned on, which will heat the heat transfer oil inside the three-way pipe. When it is heated to the predetermined temperature, it can be transported into the oil storage chamber through the first and second branch pipes and fill the oil storage chamber, thereby increasing the temperature of the cutting blade and heating it evenly to meet the temperature requirements during hot cutting.

[0015] As a further technical solution of the present invention, the anti-stick component includes a movable frame, the top end of the movable frame is fixedly connected to the bottom end of the tee pipe, the bottom end of the movable frame is connected to the top end of the cutting blade, and a first fixing seat is fixedly installed at both the left and right ends of the movable frame.

[0016] As a further technical solution of the present invention, the end of the first fixed seat away from the movable frame is movably connected to a connecting rod via a rotating shaft, and the end of the connecting rod away from the first fixed seat is movably connected to a second fixed seat via a rotating shaft, and the second fixed seat is movably engaged with the slot.

[0017] As a further technical solution of the present invention, an extension seat is fixedly installed at the end of the second fixed seat away from the connecting rod, and a support plate is fixedly installed at the bottom end of each extension seat. When the hot cutting assembly is in the initial state, the bottom end of the hot cutting assembly and the bottom end of the support plate are on the same horizontal plane.

[0018] During hot cutting, the PE film to be cut moves to the bottom of the hot cutting assembly. At this time, the pressure plate can drive the hot cutting assembly to move downward. When the hot cutting assembly moves downward, the movable frame moves downward as well. At this time, the two connecting rods on the left and right rotate. Under the guidance of the slot, the second fixed seat drives the extension seat to move upward. At this time, the support plate moves upward. While the cutting blade moves downward, it uses its own temperature and downward pressure to quickly cut the PE film below. After the cutting is completed, the pressure plate rises and drives the hot cutting assembly to move upward. At this time, the movable frame moves upward. Under the action of the connecting rod, it drives the extension seat to move downward and finally drives the support plate to move upward, applying downward pressure to the cut PE film, releasing the adhesion between the PE film and the cutting blade, until the hot cutting assembly automatically resets and drives the anti-sticking component to reset, completing the cutting process.

[0019] By utilizing the high specific heat capacity of heat transfer oil, the cutting blade achieves uniform processing through heating the oil, avoiding the problem of difficulty in cutting PE film caused by uneven temperature. At the same time, the downward pressure during cutting is converted into the automatic rise of the support plate through the connecting rod. After cutting, the automatic rise of the cutting blade can be converted into the automatic descent of the support plate. That is, when the cutting blade is lifted up by the adhesion of PE film, the downward pressure provided by the two support plates can remove the adhesion, effectively avoiding the problem of manual assistance required by traditional devices. The entire process is completed automatically without manual assistance, avoiding the risk of burns to personnel and improving the efficiency of hot cutting.

[0020] During the hot cutting of the PE film, the heat transfer oil injected into the storage pipe through the oil supply pipe in the early stage can stretch the first return spring and compress the second return spring to achieve energy storage operation. During the hot cutting, the one-way valve inside the oil supply pipe can be closed and the one-way valve inside the return oil pipe can be opened. At this time, the heat transfer oil is introduced into the oil storage tank through the return oil pipe. The first and second return springs automatically reset and drive the piston plate to move downward, which in turn drives the piston rod and pressure plate to move downward, thus realizing the downward movement of the hot cutting assembly and completing the hot cutting process.

[0021] By injecting heat-conducting oil before the hot cutting operation, the first and second return springs can automatically store energy. During hot cutting, simply releasing the heat-conducting oil can quickly release the previously stored energy and apply it to the hot cutting component to achieve rapid descent. The energy source for the entire hot cutting operation ultimately comes from the pressure of the heat-conducting oil. Rapid cutting of the PE film can be achieved through short-term energy storage, effectively avoiding the problem of slow cutting speed caused by the use of cylinders or motors in traditional devices. This also effectively reduces the problem of uneven PE film cut surfaces caused by excessively slow cutting speed, significantly improving the hot cutting quality.

[0022] The beneficial effects of this invention are as follows:

[0023] 1. This invention utilizes the high specific heat capacity of heat transfer oil to achieve a uniform cutting process by heating the oil, avoiding the problem of difficulty in cutting PE film due to uneven temperature. Simultaneously, the downward pressure during cutting is converted into the automatic rise of the support plate via a connecting rod. After cutting, the automatic rise of the cutter is converted into the automatic descent of the support plate. That is, when the PE film is lifted upwards due to adhesion, the downward pressure provided by the two support plates removes the adhesion, effectively avoiding the need for manual assistance in traditional devices. The entire process is automated, eliminating the risk of burns and improving hot cutting efficiency.

[0024] 2. This invention enables the automatic energy storage of the first and second return springs by injecting heat-conducting oil before the hot cutting operation. During hot cutting, simply releasing the heat-conducting oil quickly releases the previously stored energy and applies it to the hot cutting assembly, allowing it to descend rapidly. The energy source for the entire hot cutting operation ultimately comes from the pressure of the heat-conducting oil. By storing energy briefly, the PE film can be cut quickly, effectively avoiding the problem of slow cutting speed caused by using cylinders or motors in traditional devices. This also effectively reduces the problem of uneven PE film cut surfaces caused by excessively slow cutting speeds, significantly improving the hot cutting quality. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the workbench in the hidden state of the present invention;

[0027] Figure 3 This is an exploded view of the structure of the extension frame and anti-stick component of the present invention;

[0028] Figure 4 This is a cross-sectional schematic diagram of the internal structure of the oil tank of the present invention;

[0029] Figure 5 This is a separate schematic diagram of the hot-cutting component structure of the present invention;

[0030] Figure 6 This is a cross-sectional schematic diagram of the internal structure of the hot-cutting component of the present invention;

[0031] Figure 7 This is a separate exploded view of the structure of the anti-stick component of the present invention.

[0032] In the diagram: 1. Workbench; 2. Support leg; 3. Frame; 4. Oil tank; 5. Extension frame; 6. Slot; 7. Oil supply pipe; 8. Oil return pipe; 9. Temporary storage pipe; 10. Piston plate; 11. Piston rod; 12. First return spring; 13. Second return spring; 14. Pressure plate; 15. Hot cutting assembly; 151. T-connector; 152. Cutting knife; 153. Oil storage chamber; 154. Heating element; 155. First branch pipe; 156. Second branch pipe; 16. Anti-stick assembly; 161. Movable frame; 162. First fixed seat; 163. Second fixed seat; 164. Connecting rod; 165. Extension seat; 166. Support plate. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] like Figures 1 to 7 As shown in the embodiment of the present invention, a hot cutting machine for PE film processing includes a workbench 1. A frame 3 is fixedly installed at the center of the top of the workbench 1. Support feet 2 are fixedly installed at the four corners of the bottom of the workbench 1. An oil storage tank 4 is fixedly installed in the center of the frame 3. Extension racks 5 are fixedly installed on both the left and right sides of the oil storage tank 4. Slots 6 are provided near the bottom of the two extension racks 5. A temporary storage tube 9 is fixedly installed at the bottom of the oil storage tank 4. A piston plate 10 is movably sleeved inside the temporary storage tube 9. A piston plate 10 is fixedly installed at the bottom of the piston plate 10. The piston rod 11 has its bottom end passing through the bottom end of the temporary storage tube 9 and is fixedly mounted with a pressure plate 14. The bottom end of the pressure plate 14 is fixedly mounted with a heat-cutting assembly 15. The bottom end of the heat-cutting assembly 15 is provided with an anti-sticking assembly 16. The anti-sticking assembly 16 is located above the workbench 1. The oil tank 4 stores heat-conducting oil. The heat-cutting assembly 15 includes a three-way pipe 151. The three-way pipe 151 is equipped with heating elements 154 at equal intervals. The three-way pipe 151 also stores heat-conducting oil. One end of the anti-sticking assembly 16 is movably engaged with the slot 6.

[0035] Before actual use, the device should be placed on a flat ground using the support feet 2 at the bottom of the workbench 1. At the same time, the external conveying device should be used in conjunction with the workbench 1, that is, the external conveyor belt should be used to release the PE film so that it passes through the workbench 1 at a uniform speed to realize the transmission of the PE film. During the transmission process, the PE film should be kept from tilting or shifting to ensure the smooth hot cutting.

[0036] like Figure 2 and Figure 3 as well as Figure 4As shown, a first return spring 12 located inside the temporary storage tube 9 is movably sleeved on the upper side of the outer side of the piston rod 11, and a second return spring 13 located below the temporary storage tube 9 is movably sleeved on the lower side of the outer side of the piston rod 11. The upper and lower ends of the first return spring 12 are fixedly connected to the bottom end of the piston plate 10 and the bottom end of the inner cavity of the temporary storage tube 9, respectively. The upper and lower ends of the second return spring 13 are fixedly connected to the bottom end of the temporary storage tube 9 and the top end of the pressure plate 14, respectively. An oil supply pipe 7 is fixedly connected to the left side of the oil storage tank 4, and a return oil pipe 8 is fixedly connected to the right end of the oil storage tank 4. Both the oil supply pipe 7 and the return oil pipe 8 are located near the bottom end of the oil storage tank 4. A one-way valve is installed inside both the oil supply pipe 7 and the return oil pipe 8. The other ends of the oil supply pipe 7 and the return oil pipe 8 are connected to the left and right sides of the temporary storage tube 9 near the bottom end, respectively. The one-way valve inside the oil supply pipe 7 and the one-way valve inside the return oil pipe 8 are respectively open inward and closed outward, and open outward and closed inward.

[0037] Before the PE film is heat-cut, the one-way valve inside the oil supply pipe 7 can be opened and the one-way valve inside the return oil pipe 8 can be closed. At this time, the heat transfer oil inside the oil storage tank 4 can be injected into the bottom end of the temporary storage pipe 9 through the oil supply pipe 7. As the heat transfer oil injection increases, the piston plate 10 is subjected to pressure and rises. At this time, the first return spring 12 is stretched and the second return spring 13 is compressed. When the piston plate 10 moves to the position limit, the one-way valve of the oil supply pipe 7 is closed to wait for the PE film to be heat-cut.

[0038] like Figure 2 and Figure 3 as well as Figure 5 and Figure 6 As shown, the hot cutting assembly 15 also includes a cutting blade 152 located below the three-way pipe 151. The cutting blade 152 has an oil storage chamber 153 inside. The left and right ends of the three-way pipe 151 are fixedly connected to the second branch pipe 156. The other end of the second branch pipe 156 is connected to the top of the cutting blade 152. The middle part of the bottom end of the three-way pipe 151 is fixedly connected to the first branch pipe 155. The other end of the first branch pipe 155 is connected to the middle part of the top of the cutting blade 152. The cutting blade 152 is trapezoidal in shape.

[0039] Meanwhile, before the hot cutting operation, the heating element 154 inside the three-way pipe 151 can be turned on. At this time, the heat-conducting oil inside the three-way pipe 151 can be heated. When it is heated to the predetermined temperature, it can be transported into the oil storage chamber 153 through the first branch pipe 155 and the second branch pipe 156 and fill the oil storage chamber 153, thereby increasing the temperature of the cutting blade 152 and heating it evenly to meet the temperature requirements during hot cutting.

[0040] like Figure 2 and Figure 3 as well as Figure 7As shown, the anti-stick component 16 includes a movable frame 161. The top end of the movable frame 161 is fixedly connected to the bottom end of the three-way pipe 151, and the bottom end of the movable frame 161 is connected to the top end of the cutting blade 152. First fixed seats 162 are fixedly installed on both the left and right ends of the movable frame 161. A connecting rod 164 is movably connected to the end of the first fixed seat 162 away from the movable frame 161 through a rotating shaft. A second fixed seat 163 is movably connected to the end of the connecting rod 164 away from the first fixed seat 162 through a rotating shaft. The second fixed seat 163 is movably engaged with the slot 6. An extension seat 165 is fixedly installed on the end of the second fixed seat 163 away from the connecting rod 164. A support plate 166 is fixedly installed on the bottom end of the extension seat 165. When the hot cutting component 15 is in the initial state, the bottom end of the hot cutting component 15 and the bottom end of the support plate 166 are on the same horizontal plane.

[0041] Example 1:

[0042] During hot cutting, the PE film to be hot-cut moves to below the hot cutting assembly 15. At this time, the pressure plate 14 can drive the hot cutting assembly 15 to move downward. When the hot cutting assembly 15 moves downward, the movable frame 161 moves downward as well. At this time, the two connecting rods 164 on the left and right rotate. Under the guidance of the slot 6, the second fixed seat 163 drives the extension seat 165 to move upward. At this time, the support plate 166 moves upward. While the cutting blade 152 moves downward, it uses its own temperature and downward pressure to quickly cut the PE film below. After the cutting is completed, the pressure plate 14 rises and drives the hot cutting assembly 15 to move upward. At this time, the movable frame 161 moves upward as well. Under the action of the connecting rod 164, it drives the extension seat 165 to move downward and finally drives the support plate 166 to move upward, applying downward pressure to the cut PE film, releasing the adhesion between the PE film and the cutting blade 152, until the hot cutting assembly 15 automatically resets and drives the anti-sticking assembly 16 to reset, completing the cutting process.

[0043] By utilizing the high specific heat capacity of heat transfer oil, heating the oil achieves a uniform processing of the cutting blade 152, avoiding the problem of difficulty in cutting PE film due to uneven temperature. Simultaneously, the downward pressure during cutting is converted into the automatic rise of the support plate 166 via the connecting rod 164. After cutting, the automatic rise of the cutting blade 152 is converted into the automatic descent of the support plate 166. That is, when the cutting blade 152 is lifted upwards due to the adhesion of PE film, the downward pressure provided by the two support plates 166 can remove the adhesion, effectively avoiding the problem of manual assistance required by traditional devices. The entire process is automated, eliminating the risk of burns and improving hot cutting efficiency.

[0044] Example 2:

[0045] During the hot cutting of the PE film, the heat transfer oil injected into the temporary storage pipe 9 through the oil supply pipe 7 in the early stage can stretch the first return spring 12 and compress the second return spring 13 to achieve energy storage operation. During the hot cutting, the one-way valve inside the oil supply pipe 7 can be closed and the one-way valve inside the return oil pipe 8 can be opened. At this time, the heat transfer oil is introduced into the oil storage tank 4 through the return oil pipe 8. At this time, the first return spring 12 and the second return spring 13 automatically reset and drive the piston plate 10 to move downward, which in turn drives the piston rod 11 and the pressure plate 14 to move downward, and finally realizes the downward movement of the hot cutting assembly 15 to achieve the hot cutting process.

[0046] By injecting heat-conducting oil before the hot cutting operation, the first return spring 12 and the second return spring 13 can automatically store energy. During hot cutting, the heat-conducting oil only needs to be released to quickly release the energy stored in the early stage and apply it to the hot cutting component 15 to achieve the rapid descent of the hot cutting component 15. The energy source of the entire hot cutting operation still comes from the pressure of the heat-conducting oil. The PE film can be cut quickly through a short period of energy storage, which effectively avoids the problem of slow cutting speed caused by the use of cylinders or motors to provide power in traditional devices. It also effectively reduces the problem of uneven PE film cut surface caused by excessively slow cutting speed, and significantly improves the hot cutting quality.

[0047] Working principle and usage process:

[0048] Before the PE film is heat-cut, the one-way valve inside the oil supply pipe 7 can be opened and the one-way valve inside the return oil pipe 8 can be closed. At this time, the heat transfer oil inside the oil storage tank 4 can be injected into the bottom end of the temporary storage pipe 9 through the oil supply pipe 7. As the heat transfer oil is injected, the piston plate 10 is subjected to pressure and rises. At this time, the first return spring 12 is stretched and the second return spring 13 is compressed. When the piston plate 10 moves to the position limit, the one-way valve of the oil supply pipe 7 is closed to wait for the PE film to be heat-cut.

[0049] Meanwhile, before the hot cutting operation, the electric heating tube 154 inside the three-way pipe 151 can be turned on. At this time, the heat-conducting oil inside the three-way pipe 151 can be heated. When it is heated to the predetermined temperature, it can be transported into the oil storage chamber 153 through the first branch pipe 155 and the second branch pipe 156 and fill the oil storage chamber 153, thereby increasing the temperature of the cutting blade 152 and heating it evenly to meet the temperature requirements during hot cutting.

[0050] During the hot cutting of the PE film, the heat transfer oil injected into the storage pipe 9 through the oil supply pipe 7 in the early stage can stretch the first return spring 12 and compress the second return spring 13 to achieve energy storage operation. During the hot cutting, the one-way valve inside the oil supply pipe 7 can be closed and the one-way valve inside the return oil pipe 8 can be opened. At this time, the heat transfer oil is introduced into the oil storage tank 4 through the return oil pipe 8. At this time, the first return spring 12 and the second return spring 13 automatically reset and drive the piston plate 10 to move downward, which in turn drives the piston rod 11 and the pressure plate 14 to move downward, and finally realizes the downward movement of the hot cutting assembly 15 to achieve the hot cutting process.

[0051] During hot cutting, the PE film to be hot-cut moves to below the hot cutting assembly 15. At this time, the pressure plate 14 can drive the hot cutting assembly 15 to move downward. When the hot cutting assembly 15 moves downward, the movable frame 161 moves downward as well. At this time, the two connecting rods 164 on the left and right rotate. Under the guidance of the slot 6, the second fixed seat 163 drives the extension seat 165 to move upward. At this time, the support plate 166 moves upward. While the cutting blade 152 moves downward, it uses its own temperature and downward pressure to quickly cut the PE film below. After the cutting is completed, the pressure plate 14 rises and drives the hot cutting assembly 15 to move upward. At this time, the movable frame 161 moves upward as well. Under the action of the connecting rod 164, it drives the extension seat 165 to move downward and finally drives the support plate 166 to move upward, applying downward pressure to the cut PE film, releasing the adhesion between the PE film and the cutting blade 152, until the hot cutting assembly 15 automatically resets and drives the anti-sticking assembly 16 to reset, completing the cutting process.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hot cutting machine for processing PE film, comprising a worktable (1), characterized in that: A frame (3) is fixedly installed at the center of the top of the workbench (1). Support feet (2) are fixedly installed at the four corners of the bottom of the workbench (1). An oil tank (4) is fixedly installed in the center of the frame (3). Extension racks (5) are fixedly installed on both sides of the oil tank (4). Slots (6) are opened near the bottom of the two extension racks (5). A temporary storage tube (9) is fixedly installed at the bottom of the oil tank (4). A piston plate (10) is movably sleeved inside the temporary storage tube (9). A piston rod (11) is fixedly installed at the bottom of the piston plate (10). The bottom end of the temporary storage tube (9) is fixedly installed with a pressure plate (14). The bottom end of the pressure plate (14) is fixedly installed with a heat-cutting component (15). The bottom end of the heat-cutting component (15) is provided with an anti-stick component (16). The anti-stick component (16) is located above the workbench (1). The oil tank (4) stores heat-conducting oil. The heat-cutting component (15) includes a three-way pipe (151). The three-way pipe (151) is equipped with heating tubes (154) at equal intervals. The three-way pipe (151) also stores heat-conducting oil. One end of the anti-stick component (16) is movably connected to the slot (6). A first reset spring (12) located inside the temporary storage tube (9) is movably sleeved on the upper side of the outer side of the piston rod (11), and a second reset spring (13) located below the temporary storage tube (9) is movably sleeved on the lower side of the outer side of the piston rod (11). The upper and lower ends of the first reset spring (12) are fixedly connected to the bottom end of the piston plate (10) and the bottom end of the inner cavity of the temporary storage tube (9), respectively. The upper and lower ends of the second reset spring (13) are fixedly connected to the bottom end of the temporary storage tube (9) and the top end of the pressure plate (14), respectively. The left side of the oil storage tank (4) is fixedly connected to an oil supply pipe (7), and the right end of the oil storage tank (4) is fixedly connected to an oil return pipe (8). The oil supply pipe (7) and the oil return pipe (8) are both located near the bottom of the oil storage tank (4). A one-way valve is installed inside the oil supply pipe (7) and the oil return pipe (8). The other end of the oil supply pipe (7) and the oil return pipe (8) are respectively connected to the left and right sides of the temporary storage pipe (9) near the bottom.

2. The hot cutting machine for PE film processing according to claim 1, characterized in that: The one-way valve inside the oil supply pipe (7) and the one-way valve inside the return pipe (8) are respectively open inward and closed outward, and open outward and closed inward.

3. The hot cutting machine for PE film processing according to claim 1, characterized in that: The hot cutting assembly (15) also includes a cutting blade (152) located below the three-way pipe (151). The cutting blade (152) has an oil storage cavity (153) inside. The left and right ends of the three-way pipe (151) are fixedly connected to a second branch pipe (156). The other end of the second branch pipe (156) is connected to the top of the cutting blade (152).

4. The hot cutting machine for PE film processing according to claim 3, characterized in that: The bottom of the three-way pipe (151) is fixedly connected to the middle of the first branch pipe (155), and the other end of the first branch pipe (155) is connected to the middle of the top of the cutting blade (152). The cutting blade (152) is in the shape of an inverted trapezoid.

5. A hot-cutting machine for PE film processing according to claim 1, characterized in that: The anti-stick component (16) includes a movable frame (161), the top end of which is fixedly connected to the bottom end of a three-way pipe (151), the bottom end of which is connected to the top end of a cutting blade (152), and a first fixing seat (162) is fixedly installed on both the left and right ends of the movable frame (161).

6. A hot-cutting machine for PE film processing according to claim 5, characterized in that: The end of the first fixed seat (162) away from the movable frame (161) is movably connected to the connecting rod (164) via a rotating shaft. The end of the connecting rod (164) away from the first fixed seat (162) is movably connected to the second fixed seat (163) via a rotating shaft. The second fixed seat (163) is movably engaged with the slot (6).

7. A hot-cutting machine for PE film processing according to claim 6, characterized in that: An extension seat (165) is fixedly installed at the end of the second fixed seat (163) away from the connecting rod (164). A support plate (166) is fixedly installed at the bottom end of the extension seat (165). When the hot cutting assembly (15) is in the initial state, the bottom end of the hot cutting assembly (15) and the bottom end of the support plate (166) are on the same horizontal plane.

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