Refrigerator door seal magnetic strip winding machine

Abstract

The application discloses a refrigerator door seal magnetic strip winding machine and belongs to the technical field of refrigerator door seal magnetic strip winding machines. The refrigerator door seal magnetic strip winding machine comprises a mounting frame, a winding drum is rotatably arranged on the mounting frame, and further comprises a first driving assembly for driving the winding drum to rotate; a first connecting plate is fixedly connected on one side of the mounting frame through bolts, and fixed plates are fixedly connected on the first connecting plate in a symmetrical mode; one end of a tensioning arm is rotatably arranged on a third connecting plate, the third guide wheel is attached to the magnetic strip, the tensioning arm is forced by the tightness degree of the magnetic strip, the pressure value of the pressure sensor is changed, the rotation speed of the first motor and the second motor is adjusted according to the pressure value received by the controller, and then the winding speed can be adjusted in real time according to the tightness degree of the magnetic strip, the disorder or breakage of the magnetic strip in the winding process is effectively avoided, and the convenience of the magnetic strip winding is improved.

Description

Technical Field

[0001] This invention relates to the technical field of refrigerator door seal magnetic strip winding machines, and more particularly to a refrigerator door seal magnetic strip winding machine. Background Technology

[0002] The production of refrigerator door seal magnetic strips requires the use of various supporting equipment within a large production line for integrated control and production of the magnetic strip products. The specific manufacturing process involves: first, the raw material—magnetic particles—is poured into an extruder to extrude long strip-shaped semi-finished magnetic strips. Then, the semi-finished magnetic strips are rapidly cooled using water-cooling equipment. Next, a cannon-type air-blowing dehumidifier is used to blow away surface water stains from the water-cooled magnetic strips to remove surface dryness. Finally, the strips are magnetized and then wound up.

[0003] When winding and wrapping the magnetic strip for refrigerator door seals, the winding roller rotates to wind and wrap the magnetic strip. However, in the existing winding process, the magnetic strip is continuously extruded by the extruder. When the winding speed of the extruder and the winding roller are not matched, it is easy for the strip to become loose or over-tightened before winding, resulting in messy winding or breakage, which seriously affects the winding effect and normal winding. To address this, we propose a refrigerator door seal magnetic strip winding machine. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that during the winding process, when the magnetic strip is continuously extruded by the extruder, and the winding speed of the extruder and the winding roller are not matched, it is easy for it to become loose or over-tightened before winding, resulting in messy winding or breakage, which seriously affects the winding effect and normal winding.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A refrigerator door seal magnetic strip winding machine includes a mounting frame with a take-up drum rotatably mounted on the mounting frame. It further includes: a first drive assembly for driving the take-up drum to rotate; a first connecting plate bolted to one side of the mounting frame, with fixed plates symmetrically fixed to the first connecting plate; a guide rod symmetrically fixed between the two fixed plates; a slider slidably connected to the guide rod; a reciprocating screw rotatably connected between the two fixed plates; and a slider threaded onto the reciprocating screw; a second drive assembly for driving the reciprocating screw to rotate; and a second connecting plate bolted to the slider. The plate is provided with a first guide wheel; a third connecting plate is fixedly connected to the second connecting plate by bolts, the third connecting plate is provided with a tension arm, one end of the tension arm is rotatably connected to the third connecting plate, the other end of the tension arm is rotatably connected to the third guide wheel, a fixing block is fixedly connected to the third connecting plate, a tension spring is fixedly connected to the fixing block, and the end of the tension spring away from the fixing block is fixedly connected to one side of the tension arm; a pressure sensor is fixedly connected to the third connecting plate, the pressure sensor is located above the tension arm, and the detection end of the pressure sensor faces the tension arm; a fourth guide wheel is rotatably connected to the third connecting plate.

[0007] To facilitate the installation and disassembly of the winding drum, preferably, a first rotating shaft is rotatably connected to one side of the mounting frame, and a second rotating shaft is rotatably and slidably connected to the other side of the mounting frame. A fixing plate is fixedly connected to both the first and second rotating shafts. An installation plate is bolted to the fixing plate. Insertion blocks are symmetrically fixedly connected to the installation plate. Limiting plates are fixedly connected to both ends of the winding drum. The limiting plates have insertion slots corresponding to the insertion blocks.

[0008] To facilitate the fixing of the second rotating shaft, a mounting plate is fixedly connected to the mounting bracket, and a cylinder is fixedly connected to the mounting plate. The telescopic end of the cylinder is rotatably connected to one end of the second rotating shaft.

[0009] Furthermore, the first drive assembly includes a speed reducer and a first motor. The speed reducer is fixedly connected to the mounting bracket, and the output shaft of the speed reducer is fixedly connected to the first rotating shaft. The first motor is mounted on the speed reducer, and the output shaft of the first motor is fixedly connected to the input shaft of the speed reducer.

[0010] Furthermore, the second drive assembly includes a second motor, a connecting frame is fixedly connected to one side of the first connecting plate, the second motor is fixedly connected to the connecting frame, a first pulley is fixedly connected to the output end of the second motor, and a second pulley is fixedly connected to one end of the reciprocating screw. The first pulley and the second pulley are connected by a belt.

[0011] To further improve the dustproof effect of the reciprocating lead screw and guide rod, dustproof shrink cloth is fixedly connected to both of the fixed plates. The ends of the two dustproof shrink cloths away from the fixed plates are fixedly connected to the slider, and the guide rod and reciprocating lead screw are both inside the dustproof shrink cloth.

[0012] To further improve the guiding and limiting effect on the magnetic strip, an adjusting arm is fixedly connected to the second connecting plate by bolts, and a second guide wheel is rotatably connected to one end of the adjusting arm.

[0013] Compared with the prior art, the present invention provides a refrigerator door seal magnetic strip winding machine, which has the following beneficial effects:

[0014] 1. This refrigerator door seal magnetic strip winding machine uses a starting cylinder to retract its telescopic end, which pulls the second rotating shaft to slide on the mounting bracket during retraction, increasing the distance between the first and second rotating shafts. The winding drum is then lifted onto the mounting bracket, and the insertion slot on the limiting plate near the first rotating shaft is aligned with the insertion block on the mounting plate on the first rotating shaft. The insertion block enters the insertion slot. The cylinder is then activated, extending its telescopic end and pushing the mounting plate on the second rotating shaft closer to the limiting plate at the other end of the winding drum. This allows the insertion block on the mounting plate on the second rotating shaft to enter the insertion slot, facilitating the installation and removal of the winding drum.

[0015] 2. This refrigerator door seal magnetic strip winding machine works by repeatedly drawing air into the first sealing cylinder and then venting it by pulling the first push rods on both sides as the slider moves back and forth. During venting, the gas is discharged into the connecting pipe through the vent pipe and then into the second sealing cylinder, pushing the second push rod upward. The second push rod pushes the mounting block fixedly connected to it upward, which in turn pushes the first guide wheel upward. Since the magnetic strip is on the first guide wheel, the upward movement of the first guide wheel will have a tensioning effect on the magnetic strip, preventing it from loosening. At the same time, as the first sealing cylinder repeatedly fills the second sealing cylinder with air, excess gas will enter the exhaust pipe and be discharged through the exhaust hole again, thereby balancing the air pressure in the second sealing cylinder.

[0016] 3. This refrigerator door seal magnetic strip winding machine, when the tensioning arm moves upward, pulls the pull rope, which in turn pulls the sealing block. The sealing block stretches the elastic spring, and after the sealing block is pulled, more sets of vent holes are connected to the second sealing cylinder, increasing the amount of air vented in the second sealing cylinder. This reduces the force of the second push rod being pushed by the gas, causing the first guide wheel to move downward. When the first guide wheel moves downward, it further relaxes the magnetic strip, that is, reduces the tension on the magnetic strip, thus further relieving the tension of the magnetic strip and providing a certain buffer time for the adjustment of the first motor and the second motor, thereby improving the tensioning effect.

[0017] All parts of the device not described herein are the same as or can be implemented using existing technologies. This invention rotates one end of the tensioning arm on the third connecting plate, causing the third guide wheel to come into contact with the magnetic strip. The tension of the magnetic strip applies force to the tensioning arm, thereby changing the pressure value of the pressure sensor. After receiving the pressure value, the controller adjusts the rotation speed of the first and second motors accordingly. This allows for real-time adjustment of the winding speed based on the tension of the magnetic strip, effectively preventing the magnetic strip from becoming disordered or broken during winding and improving the convenience of magnetic strip winding. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a refrigerator door sealing magnetic strip winding machine proposed in this invention;

[0019] Figure 2 This invention provides a refrigerator door seal magnetic strip winding machine. Figure 1 A schematic diagram of the structure of A in the middle;

[0020] Figure 3 This is a partial top view of a refrigerator door sealing magnetic strip winding machine proposed in this invention;

[0021] Figure 4 This is a schematic diagram of the structure of a refrigerator door seal magnetic strip winding machine mounting bracket proposed in this invention;

[0022] Figure 5 This invention provides a refrigerator door seal magnetic strip winding machine. Figure 1 A schematic diagram of the structure of B in the middle.

[0023] In the diagram: 1. Mounting bracket; 10. Second rotating shaft; 11. First rotating shaft; 111. Fixed plate; 112. Mounting plate; 113. Insertion block; 114. Limiting plate; 115. Take-up drum; 116. Reducer; 117. First motor; 12. Mounting plate; 121. Cylinder; 13. First connecting plate; 14. Fixed plate; 141. Guide rod; 142. Reciprocating screw; 143. Slider; 144. Dustproof shrink cloth; 145. Second motor; 146. Connecting bracket; 147. First pulley; 148. Second pulley; 149. Belt; 5. Second connecting plate; 151. First guide wheel; 152. Adjusting arm; 153. Second guide wheel; 16. Third connecting plate; 161. Tensioning arm; 162. Third guide wheel; 163. Tension spring; 164. Pressure sensor; 165. Fixing block; 166. Fourth guide wheel; 2. First sealing cylinder; 21. First push rod; 22. Air inlet pipe; 23. Air outlet pipe; 3. Second sealing cylinder; 31. Second push rod; 32. Connecting pipe; 4. Exhaust pipe; 41. Mounting bracket; 42. Spring; 43. Sealing block; 44. Exhaust hole; 45. Pull rope. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0025] Example 1:

[0026] Reference Figure 1-5 A refrigerator door seal magnetic strip winding machine includes a mounting frame 1, on which a winding drum 115 is rotatably mounted. It also includes: a first drive assembly for driving the winding drum 115 to rotate; a first connecting plate 13 bolted to one side of the mounting frame 1, with symmetrically fixed plates 14 on the first connecting plate 13, and guide rods 141 symmetrically fixed between the two fixed plates 14, with sliders 143 slidably connected to the guide rods 141; a reciprocating screw 142 rotatably connected between the two fixed plates 14, with the slider 143 threaded onto the reciprocating screw 142; first sealing cylinders 2 fixedly connected to both sides of the first connecting plate 13, with a first push rod 21 slidably connected inside the first sealing cylinder 2, the end of the first push rod 21 away from the first sealing cylinder 2 fixedly connected to the slider 143; an air inlet pipe 22 and an air outlet pipe 23 fixedly connected to the bottom of the first sealing cylinder 2, each with a one-way valve; and a second drive assembly for driving the reciprocating screw. 142 Rotation; A second connecting plate 15 is fixedly connected to the slider 143 by bolts. A second sealing cylinder 3 is fixedly connected to the second connecting plate 15. A second push rod 31 is slidably connected to the second sealing cylinder 3. An installation block is fixedly connected to the top of the second push rod 31. A first guide wheel 151 is rotatably connected to the installation block. The installation block is slidably connected to the second connecting plate 15. A connecting pipe 32 is fixedly connected to the end of the second sealing cylinder 3. The end of the vent pipe 23 away from the first sealing cylinder 2 is fixedly connected to the connecting pipe 32. An exhaust pipe 4 is fixedly connected to the end of the second sealing cylinder 3. Six sets of exhaust holes 44 are equally spaced on the exhaust pipe 4. Each set of exhaust holes 44 has at least 4 holes around its circumference. An installation bracket 41 is fixedly connected to the end of the exhaust pipe 4 near the second sealing cylinder 3. A spring 42 is fixedly connected to the installation bracket 41. A sealing block 43 is fixedly connected to the spring 42. The sealing block 43 is slidably connected to the exhaust pipe 4. A pull rope 45 is fixedly connected to one end of the sealing block 43.

[0027] A third connecting plate 16 is bolted to the second connecting plate 15. A tensioning arm 161 is mounted on the third connecting plate 16, with one end rotatably connected to it. A pull rope 45, the end furthest from the sealing block 43, is fixedly connected to the end of an adjusting arm 152 furthest from its connection point with the third connecting plate 16. A third guide wheel 162 is rotatably connected to one end of the tensioning arm 161. A fixing block 165 is fixedly connected to the third connecting plate 16, and a tension spring 163 is fixedly connected to the fixing block 165. The tension spring 163 is furthest from the fixing block 165. One end is fixedly connected to one side of the tensioning arm 161; a pressure sensor 164 is fixedly connected to the third connecting plate 16, the pressure sensor 164 is located above the tensioning arm 161, and the detection end of the pressure sensor 164 faces the tensioning arm 161; a fourth guide wheel 166 is rotatably connected to the third connecting plate 16; a first rotating shaft 11 is rotatably connected to one side of the mounting bracket 1, and a second rotating shaft 10 is rotatably and slidably connected to the other side of the mounting bracket 1. A fixed plate 111 is fixedly connected to both the first rotating shaft 11 and the second rotating shaft 10, and bolts are used to connect the fixed plate 111 to the second rotating shaft 10. A mounting plate 112 is attached, and symmetrical plug-in blocks 113 are fixedly connected to the mounting plate 112. Limiting plates 114 are fixedly connected to both ends of the take-up drum 115, and the limiting plates 114 have plug-in slots corresponding to the plug-in blocks 113. A mounting plate 12 is fixedly connected to the mounting frame 1, and a cylinder 121 is fixedly connected to the mounting plate 12. The telescopic end of the cylinder 121 is rotatably connected to one end of the second rotating shaft 10. The first drive assembly includes a reducer 116 and a first motor 117. The reducer 116 is fixedly connected to the mounting frame 1, and the output shaft of the reducer 116... The first motor 117 is fixedly connected to the first rotating shaft 11, and is mounted on the reducer 116. The output shaft of the first motor 117 is fixedly connected to the input shaft of the reducer 116. The second drive assembly includes a second motor 145. A connecting frame 146 is fixedly connected to one side of the first connecting plate 13. The second motor 145 is fixedly connected to the connecting frame 146. A first pulley 147 is fixedly connected to the output end of the second motor 145. A second pulley 148 is fixedly connected to one end of the reciprocating screw 142. The first pulley 147 and the second pulley 148 are connected by a belt 149.

[0028] When using this device, the cylinder 121 is activated, causing the telescopic end of the cylinder 121 to retract. During the retraction, the second rotating shaft 10 is pulled to slide on the mounting frame 1, increasing the distance between the first rotating shaft 11 and the second rotating shaft 10. Then, the take-up drum 115 is lifted onto the mounting frame 1, and the insertion slot on the limiting plate 114 of the take-up drum 115 near the first rotating shaft 11 is aligned with the insertion block 113 on the mounting plate 112 on the first rotating shaft 11. The insertion block 113 enters the insertion slot. Then, the cylinder 121 is activated, causing the telescopic end of the cylinder 121 to extend, pushing the mounting plate 112 on the second rotating shaft 10 closer to the limiting plate 114 at the other end of the take-up drum 115. This causes the insertion block 113 on the mounting plate 112 on the second rotating shaft 10 to enter the insertion slot, thus completing the installation of the take-up drum 115.

[0029] Subsequently, by following the magnetic stripe sealing the refrigerator door... Figure 1 The winding method shown involves placing the magnetic strip on the fourth guide wheel 166, below the third guide wheel 162, and on the first guide wheel 151, and winding one end of the magnetic strip onto the take-up drum 115.

[0030] Then, the first motor 117 and the second motor 145 are started. When the first motor 117 drives the first rotating shaft 11 to rotate, it drives the take-up drum 115 to rotate on the mounting frame 1 to wind the magnetic strip. At the same time, the second motor 145 drives the reciprocating screw 142 to rotate through the belt 149, driving the slider 143 to reciprocate relative to the take-up drum 115. When the slider 143 reciprocates, it drives the magnetic strip to move relative to the mounting frame 1 through the second connecting plate 15 and the third connecting plate 16. When it shakes, the magnetic strip can be evenly wound on the take-up drum 115, avoiding messy winding of the magnetic strip.

[0031] Meanwhile, as the slider 143 reciprocates, it repeatedly draws air into the first sealing cylinder 2 by pulling the first push rods 21 on both sides, and then exhausts the air. During exhaust, the air is discharged into the connecting pipe 32 through the air outlet pipe 23, and then into the second sealing cylinder 3, pushing the second push rod 31 to move upward. The second push rod 31 pushes the mounting block fixedly connected to it to move upward, and then pushes the first guide wheel 151 to move upward. Since the magnetic strip is on the first guide wheel 151, the first guide wheel 151 will have a tensioning effect on the magnetic strip after it moves upward, preventing it from loosening. At the same time, since the first sealing cylinder 2 repeatedly fills the second sealing cylinder 3 with air, the excess gas will enter the exhaust pipe 4 and be discharged through the exhaust hole 44, thereby balancing the air pressure in the second sealing cylinder 3 (when the magnetic strip is at the just right tension, the sealing block 43 is in the initial position, and the initial position is a set of exhaust holes 44 that make the second sealing cylinder 3 connected to the outside).

[0032] When the magnetic strip is located under the third guide wheel 162, the magnetic strip is in a taut state and is in close contact with the third guide wheel 162, which facilitates the smooth winding of the winding drum 115.

[0033] When the magnetic strip is too tight, it drives the third guide wheel 162 to move upward, causing the connection end between the tension arm 161 and the third connecting plate 16 to rotate. When the tension arm 161 rotates, it stretches the tension spring 163 and one side is in close contact with the pressure sensor 164. The pressure sensor 164, the first motor 117, and the second motor 145 are all electrically connected to the external controller. When the tension arm 161 is in close contact with the detection end of the pressure sensor 164, the pressure sensor 164 value will increase. The initial pressure value is set to 0. The alarm value is set by the controller. The change value of the pressure sensor 164 within 0-5 is a safe value. A value exceeding 5 is an alarm value.

[0034] As the magnetic strip tightens, the tensioning arm 161 is under pressure, and the magnetic strip will forcefully push the third guide wheel 162 to move upward, which increases the pressure of the tensioning arm 161 on the pressure sensor 164, causing the pressure sensor 164 value to increase. When the value exceeds the alarm value of 5, the controller will process the data and then control the first motor 117 and the second motor 145 to reduce the speed of the first rotating shaft 11 and the second motor 145, thereby slowing down the winding speed of the winding drum 115 on the magnetic strip and relieving the tension of the magnetic strip until the pressure sensor 164 value returns to 0, at which point the adjustment stops.

[0035] When the tensioning arm 161 moves upward, it pulls the pull rope 45, which pulls the sealing block 43. The sealing block 43 stretches the elastic spring 42. After the sealing block 43 is pulled, more sets of exhaust holes 44 are connected to the second sealing cylinder 3, which increases the exhaust volume in the second sealing cylinder 3. This reduces the force that pushes the second push rod 31 by the gas, causing the first guide wheel 151 to move downward. When the first guide wheel 151 moves downward, it will further relax the magnetic strip, that is, reduce the tension of the magnetic strip, and further relieve the tension of the magnetic strip. This provides a certain buffer time for the adjustment of the first motor 117 and the second motor 145, thereby improving the tensioning effect.

[0036] The device rotates one end of the tensioning arm 161 onto the third connecting plate 16, causing the third guide wheel 162 to contact the magnetic strip. The tension of the magnetic strip applies force to the tensioning arm 161, changing the pressure value of the pressure sensor 164. The controller then receives the pressure value and adjusts the rotation speed of the first motor 117 and the second motor 145 accordingly. This allows for real-time adjustment of the winding speed based on the tension of the magnetic strip, effectively preventing the magnetic strip from becoming tangled or breaking during winding and improving the ease of winding. Furthermore, by adjusting the exhaust volume of the second sealing cylinder 3, the tensioning effect is further enhanced when adjusting the magnetic strip.

[0037] Example 2:

[0038] Reference Figure 1-5A refrigerator door seal magnetic strip winding machine is basically the same as that in Embodiment 1, but further: a dustproof shrink cloth 144 is fixedly connected to both fixed plates 14, and the ends of the two dustproof shrink cloths 144 away from the fixed plates 14 are fixedly connected to the slider 143, and the guide rod 141 and the reciprocating screw 142 are both inside the dustproof shrink cloth 144.

[0039] When the slider 143 moves back and forth on the reciprocating lead screw 142, the dustproof shrink cloth 144 on both sides of the slider 143 can freely extend and retract, effectively preventing dust from the reciprocating lead screw 142 and the guide rod 141, while improving the protection of the reciprocating lead screw 142 and the guide rod 141 and extending their service life.

[0040] Example 3:

[0041] Reference Figure 1-5 A refrigerator door seal magnetic strip winding machine is basically the same as that in Embodiment 2, but further: an adjusting arm 152 is fixedly connected to the second connecting plate 15 by bolts, and a second guide wheel 153 is rotatably connected to one end of the adjusting arm 152;

[0042] One end of the adjusting arm 152 is fixed to the second connecting plate 15 by bolts. When the adjusting arm 152 is fixed by bolts, it cannot rotate. The magnetic strip rests on the second guide wheel 153, and the adjusting arm 152 extends toward the take-up drum 115. The adjusting arm 152 can reduce the distance difference between the first guide wheel 151 and the take-up drum 115. The second guide wheel 153 guides and limits the magnetic strip, preventing the magnetic strip from crossing too far from the first guide wheel 151 to the take-up drum 115, which would cause uneven winding during winding, thereby effectively improving the winding effect. At the same time, the angle between the adjusting arm 152 and the second connecting plate 15 can be adjusted by bolts, and the angle of the adjusting arm 152 can be adjusted according to the actual situation.

[0043] This invention utilizes a tensioning arm 161 that rotates on a third connecting plate 16, causing the third guide wheel 162 to contact the magnetic strip. The tension of the magnetic strip applies force to the tensioning arm 161, changing the pressure value of the pressure sensor 164. The controller then receives the pressure value and adjusts the rotation speed of the first motor 117 and the second motor 145 accordingly. This allows for real-time adjustment of the winding speed based on the tension of the magnetic strip, effectively preventing the magnetic strip from becoming tangled or breaking during winding and improving the ease of winding. Furthermore, by adjusting the exhaust volume of the second sealing cylinder 3, the tensioning effect is further enhanced when adjusting the magnetic strip.

[0044] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A refrigerator door seal magnetic strip winding machine, comprising a mounting bracket (1), characterized in that, The mounting frame (1) is rotatably mounted with a winding drum (115), and also includes: A first drive assembly is used to drive the take-up drum (115) to rotate; A first connecting plate (13) is fixedly connected to one side of the mounting bracket (1) by bolts. Fixing plates (14) are symmetrically fixedly connected to the first connecting plate (13). Guide rods (141) are symmetrically fixedly connected between the two fixing plates (14). A slider (143) is slidably connected to the guide rod (141). A reciprocating screw (142) is rotatably connected between the two fixing plates (14). The slider (143) is threadedly connected to the reciprocating screw (142). The second drive assembly is used to drive the reciprocating lead screw (142) to rotate; A second connecting plate (15) is fixedly connected to the slider (143) by bolts, and a first guide wheel (151) is provided on the second connecting plate (15). A third connecting plate (16) is fixedly connected to the second connecting plate (15) by bolts. A tensioning arm (161) is provided on the third connecting plate (16). One end of the tensioning arm (161) is rotatably connected to the third connecting plate (16). A third guide wheel (162) is rotatably connected to one end of the tensioning arm (161). A fixing block (165) is fixedly connected to the third connecting plate (16). A tension spring (163) is fixedly connected to the fixing block (165). The end of the tension spring (163) away from the fixing block (165) is fixedly connected to one side of the tensioning arm (161). A pressure sensor (164) is fixedly connected to the third connecting plate (16). The pressure sensor (164) is located above the tension arm (161), and the detection end of the pressure sensor (164) faces the tension arm (161). The fourth guide wheel (166) is rotatably connected to the third connecting plate (16); The first sealing cylinder (2) is fixedly connected to both sides of the first connecting plate (13). The first push rod (21) is slidably connected inside the first sealing cylinder (2). The end of the first push rod (21) away from the first sealing cylinder (2) is fixedly connected to the slider (143). The bottom of the first sealing cylinder (2) is fixedly connected to the air inlet pipe (22) and the air outlet pipe (23). The air inlet pipe (22) and the air outlet pipe (23) are both equipped with one-way valves. A second connecting plate (15) is fixedly connected to the slider (143) by bolts. A second sealing cylinder (3) is fixedly connected to the second connecting plate (15). A second push rod (31) is slidably connected in the second sealing cylinder (3). An installation block is fixedly connected to the top of the second push rod (31). A first guide wheel (151) is rotatably connected to the installation block. The installation block is slidably connected to the second connecting plate (15). A connecting pipe (32) is fixedly connected to the end of the second sealing cylinder (3). The end of the exhaust pipe (23) away from the first sealing cylinder (2) is fixedly connected to the connecting pipe (32). An exhaust pipe (4) is fixedly connected to the end of the second sealing cylinder (3). Six sets of exhaust pipes are evenly spaced on the exhaust pipe (4). Air holes (44), each group of air holes (44) has at least (4) holes around its circumference. An installation bracket (41) is fixedly connected to one end of the exhaust pipe (4) near the second sealing cylinder (3). A spring (42) is fixedly connected to the installation bracket (41). A sealing block (43) is fixedly connected to the spring (42). The sealing block (43) is slidably connected in the exhaust pipe (4). A pull rope (45) is fixedly connected to one end of the sealing block (43). When the tension arm (161) moves up and pulls the pull rope (45), the pull rope (45) pulls the sealing block (43), which increases the exhaust volume of the second sealing cylinder (3) and provides a buffer time for the adjustment of the first motor (117) and the second motor (145).

2. A refrigerator door seal magnetic strip winding machine according to claim 1, characterized in that, The mounting bracket (1) is rotatably connected to a first rotating shaft (11) on one side, and a second rotating shaft (10) is rotatably and slidably connected to the other side of the mounting bracket (1). A fixed plate (111) is fixedly connected to both the first rotating shaft (11) and the second rotating shaft (10). A mounting plate (112) is bolted to the fixed plate (111). A plug-in block (113) is symmetrically fixedly connected to the mounting plate (112). A limit plate (114) is fixedly connected to both ends of the winding drum (115). A plug-in slot corresponding to the plug-in block (113) is opened on the limit plate (114).

3. A refrigerator door seal magnetic strip winding machine according to claim 2, characterized in that, A mounting plate (12) is fixedly connected to the mounting bracket (1), and a cylinder (121) is fixedly connected to the mounting plate (12). The telescopic end of the cylinder (121) is rotatably connected to one end of the second rotating shaft (10).

4. A refrigerator door seal magnetic strip winding machine according to claim 3, characterized in that, The first drive assembly includes a speed reducer (116) and a first motor (117). The speed reducer (116) is fixedly connected to the mounting bracket (1). The output shaft of the speed reducer (116) is fixedly connected to the first rotating shaft (11). The first motor (117) is mounted on the speed reducer (116). The output shaft of the first motor (117) is fixedly connected to the input shaft of the speed reducer (116).

5. A refrigerator door seal magnetic strip winding machine according to claim 4, characterized in that, The second drive assembly includes a second motor (145), a connecting frame (146) is fixedly connected to one side of the first connecting plate (13), the second motor (145) is fixedly connected to the connecting frame (146), a first pulley (147) is fixedly connected to the output end of the second motor (145), a second pulley (148) is fixedly connected to one end of the reciprocating screw (142), and the first pulley (147) and the second pulley (148) are connected by a belt (149).

6. A refrigerator door seal magnetic strip winding machine according to claim 4, characterized in that, Dustproof shrink cloth (144) is fixedly connected to both of the fixed plates (14). The ends of the two dustproof shrink cloths (144) away from the fixed plates (14) are fixedly connected to the slider (143). The guide rod (141) and the reciprocating screw (142) are both inside the dustproof shrink cloth (144).

7. A refrigerator door seal magnetic strip winding machine according to claim 6, characterized in that, An adjusting arm (152) is fixedly connected to the second connecting plate (15) by bolts, and a second guide wheel (153) is rotatably connected to one end of the adjusting arm (152).

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