An extruder for producing foam rubber thermal insulation cotton

Abstract

The present invention relates to the technical field of thermal insulation cotton production, and in particular to an extruder for producing foam rubber thermal insulation cotton, comprising a base and an extruder, the extruder being connected to the base, and also comprising a winding mechanism and a cooling mechanism, the material output end of the extruder being sequentially provided with a cooling mechanism and a winding mechanism, the cooling mechanism cooling the thermal insulation cotton produced by the extruder, and the winding mechanism comprising a winding unit and a discharging unit. Alternative material rollers are provided, the first power motor can drive the lower material roller to rotate to rewind the thermal insulation cotton, when the thermal insulation cotton is rewound to a sufficient amount, the thermal insulation cotton pushes the contact roller to move downward, and then drives the spline shaft to move downward through the control rod, the first gear ring and the second gear ring are meshed to drive the worm to rotate, the worm drives the worm wheel to drive the rotating wheel to rotate, thereby realizing the position interchange of the material rollers, and the wound material roller is led out by the guide bracket to realize the effect of automatic discharging, and the idle material roller will move to the bottom of the rotating wheel to wind the thermal insulation cotton.

Description

Technical Field

[0001] The invention relates to the technical field of thermal insulation cotton production, in particular to an extruder for producing foam rubber thermal insulation cotton. Background Art

[0002] The foam rubber insulation cotton extruder is a kind of equipment specially used for producing foam rubber insulation materials. Its core function is to mix the rubber and its additives, and then pass through the extruder, die head and heating oven under high pressure and high temperature conditions to complete the cross-linking and chemical foaming process, and finally form foam rubber insulation cotton with excellent thermal insulation performance. This type of equipment has significant differences from ordinary rubber extruders in screw design, manufacturing and extrusion process, and pays special attention to the full plasticization and foaming effect of the material during the extrusion process.

[0003] However, in the production process of foam rubber insulation cotton, the winding link is also crucial. Traditional winding mechanisms often only use powered winding rollers for operation. Although this method can achieve continuous winding of the insulation cotton, as the insulation cotton gradually thickens and weighs, its removal process becomes extremely difficult. Specifically, when the insulation cotton is wound on the winding roller to a certain thickness, the tight structure formed inside it significantly increases the overall weight and volume. In addition, the softness and elasticity of the insulation cotton make the staff often face greater resistance and challenges when trying to take it out. In addition, when the insulation cotton reaches a certain thickness, its internal tension increases, which may cause jamming or breakage during the winding process, causing production stagnation, seriously affecting production efficiency and continuity.

[0004] Therefore, the problem of removing the thermal insulation cotton produced by the extruder after winding needs to be solved urgently. Summary of the invention

[0005] In order to overcome the shortcomings of the existing foam rubber thermal insulation cotton production process, in which the method of using a conventional winding roller to wind the thermal insulation cotton is inconvenient for material removal and there is a risk of production stagnation, the present invention provides an extruder for the production of foam rubber thermal insulation cotton.

[0006] An extruder for producing foam rubber thermal insulation cotton comprises a base, an extruder, the extruder is connected to the base, and also comprises a winding mechanism and a cooling mechanism. The cooling mechanism and the winding mechanism are sequentially arranged at the material output end of the extruder, and the cooling mechanism cools the thermal insulation cotton output by the extruder. The winding mechanism comprises a winding unit and a discharging unit. The winding unit comprises a mounting frame, a rotating wheel, a material roller, a guide bracket, a spline shaft and a transmission assembly. The mounting frame is fixedly connected to the base, and the rotating wheel is rotatably connected to the upper end of the mounting frame. The material roller is connected to the periphery of the rotating wheel by sliding engagement. The guide bracket is fixedly connected to the base and limits and guides the material roller. The output end of the first power motor fixed to the base is connected to the spline shaft, and a transmission gear is arranged at the end of the material roller. The spline shaft transmits the transmission gear through the transmission assembly to drive the material roller to rotate and rewind the thermal insulation cotton. The discharging unit comprises a fixed sleeve, a lifting bracket, a connecting rod ... The worm gear is connected with the guide wheel of the lifting bracket to move upward, and the guide wheel is connected with the guide wheel to move upward, and the worm gear ...

[0007] Furthermore, it also includes a passing slider, a transmission assembly is arranged on the passing slider, the passing slider is slidably connected in the guide bracket, a first elastic member is connected between the passing slider and the guide bracket, the passing slider is L-shaped, and the spline shaft passes through the bottom of the passing slider, the transmission assembly is specifically composed of a bevel gear set and a spur gear that mesh with each other, one of the bevel gears is rotatably connected to the bottom of the passing slider, and the bevel gear is slidably connected to the spline shaft through a spline, and the other bevel gear is rotatably connected to the side of the passing slider, and the spur gear is connected to the bevel gear rotatably connected to the side of the passing slider, and the spur gear can mesh with the transmission gear.

[0008] Furthermore, it also includes a reset unit, which includes a connecting rod, a slotted pry bar and a limit ring. The connecting rod slides longitudinally on the guide bracket, the spline shaft passes through the lower end of the connecting rod, the slotted pry bar is rotatably connected to the guide bracket, the slotted pry bar is rotatably connected to the upper end of the connecting rod, the first gear ring is rotatably connected to the limit ring, and the limit ring is slidably connected in the slotted pry bar.

[0009] Furthermore, the first toothed ring and the second toothed ring are respectively provided with magnetic blocks that can attract each other, and the magnetic force is greater than the elastic force of the second elastic member, thereby ensuring that when the contact roller is separated from the thermal insulation cotton wound by the material roller below, the first toothed ring and the second toothed ring can always remain in meshing state.

[0010] Furthermore, it also includes a cutter, which is fixed on the upper end of the lifting bracket.

[0011] Furthermore, it also includes a barrel, a stirring rod and a crank. The feed end of the extruder is provided with a barrel, a stirring rod is rotatably provided in the barrel, the crank is driven by the stirring rod, the crank is rotatably connected to the base, a transmission rod is arranged on the barrel, the crank transmits the transmission rod through a chain, and the transmission rod transmits the stirring rod through a bevel gear set.

[0012] Furthermore, the cooling mechanism includes a cooling bin, a fan and guide rollers. The cooling bin is fixed on the base. The fan is arranged on the side wall of the cooling bin. Four guide rollers arranged transversely are arranged in the cooling bin.

[0013] Furthermore, it also includes a second power motor, a screw, a limit bracket and a limit roller. The limit bracket is slidably connected in the cooling bin, and the limit bracket has a built-in limit roller. The three limit rollers and the guide roller are arranged in a staggered manner. The second power motor is fixed in the base. The output end of the second power motor is connected to the screw through a coupling. The screw is connected to the limit bracket through a thread. After the thermal insulation cotton is placed horizontally on the guide roller, the second power motor is started to drive the screw to rotate, and the screw drives the limit bracket to move downward. The limit roller presses the thermal insulation cotton downward, so that the thermal insulation cotton is bent and wound between the guide roller and the limit roller.

[0014] Through the above scheme, the beneficial effect achieved by the present invention is: an alternating material roller is provided, and the first power motor can drive the lower material roller to rotate to roll up the thermal insulation cotton. When the thermal insulation cotton is rolled up to a sufficient amount, the thermal insulation cotton pushes the contact roller to move downward, and then drives the spline shaft to move downward through the control rod, and the first gear ring and the second gear ring are engaged to drive the worm to rotate, and the worm drives the worm wheel to drive the rotating wheel to rotate, so as to realize the position interchange of the material rollers, and the material roller that has completed the winding is guided out by the guide bracket to realize the effect of automatic unloading, and the idle material roller will move to the bottom of the rotating wheel to wind the thermal insulation cotton, during which the worm is braked by the reset unit. Therefore, compared with the traditional production process, the present device realizes the effect of automatic winding and automatic unloading, and there is no need for staff to push out large-volume and heavy-weight material rollers, and the automatic winding effect without stopping the machine has also greatly improved the production efficiency of the industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0016] Figure 2It is a schematic diagram of the three-dimensional structure of the winding unit in the winding mechanism of the present invention from a first viewing angle.

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the winding unit in the winding mechanism of the present invention from a second viewing angle.

[0018] Figure 4 It is a schematic diagram of the three-dimensional structure of the discharging unit in the winding mechanism of the present invention.

[0019] Figure 5 It is a schematic diagram of the three-dimensional structure of the reset unit of the present invention.

[0020] Figure 6 For the present invention Figure 5 Detailed view of the three-dimensional structure at point A in the middle.

[0021] Figure 7 It is a schematic diagram of the three-dimensional structure of the barrel and the stirring rod of the present invention.

[0022] Figure 8 It is a schematic diagram of the three-dimensional structure of the cooling mechanism of the present invention.

[0023] In the accompanying drawings: 1-base, 2-extruder, 3-mounting frame, 4-rotator, 5-material roller, 6-guide bracket, 7-first power motor, 8-spline shaft, 801-first gear ring, 9-transmission assembly, 10-transmission gear, 11-pass slider, 1101-first elastic member, 12-fixed sleeve, 13-lifting bracket, 1301-second elastic member, 1302-cutter, 14-contact roller, 15-control rod, 16-fixed bracket, 17-worm, 1701-second gear ring, 18-worm gear, 19-connecting rod, 20-slotted pry bar, 21-limiting ring, 22-barrel, 23-stirring rod, 24-crank handle, 25-cooling bin, 26-fan, 27-guide roller, 28-second power motor, 29-screw, 30-limiting bracket, 31-limiting roller. DETAILED DESCRIPTION

[0024] Embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0025] Embodiment: An extruder for producing foam rubber thermal insulation cotton, such as Figure 1-Figure 8As shown, it includes a base 1 and an extruder 2, the extruder 2 is connected to the base 1, and also includes a winding mechanism and a cooling mechanism. The material output end of the extruder 2 is sequentially provided with a cooling mechanism and a winding mechanism, and the cooling mechanism cools the thermal insulation cotton produced by the extruder 2. The winding mechanism includes a winding unit and a discharging unit. The winding unit includes a mounting frame 3, a rotating wheel 4, a material roller 5, a guide bracket 6, a spline shaft 8 and a transmission assembly 9. The mounting frame 3 is fixed to the base 1, and the rotating wheel 4 is rotatably connected to the upper end of the mounting frame 3. The rotating wheel 4 is provided with symmetrical holes and slots. The two material rollers 5 slide The guide bracket 6 is fixed in the hole groove in an interlocking manner, and the material roller 5 is limitedly guided by the guide bracket 6 fixed to the base 1. The output end of the first power motor 7 fixed to the base 1 is connected with a spline shaft 8. It is worth noting that the output shaft of the first power motor 7 is connected with a sleeve with a spline inside, and the spline shaft 8 is slidably connected in the sleeve. A transmission gear 10 is provided at the end of the material roller 5. The spline shaft 8 drives the transmission gear 10 through the transmission assembly 9 to drive the material roller 5 to rotate and reel in the thermal insulation cotton. The discharging unit includes a fixed sleeve 12, a lifting bracket 13, a contact roller 14, a control rod 15, A fixed bracket 16, a worm 17 and a worm wheel 18, a fixed sleeve 12 is fixed to the base 1, a lifting bracket 13 is slidably connected to the fixed sleeve 12 and a second elastic member 1301 is connected between the two, a contact roller 14 capable of pressing the thermal insulation cotton wound by the material roller 5 is arranged on the upper end of the lifting bracket 13, and the contact roller 14 is located below the material roller 5, one end of the control rod 15 is rotatably connected to the spline shaft 8, and the other end is connected to the lifting bracket 13, a fixed bracket 16 is connected to the base 1, a worm 17 is rotatably connected to the fixed bracket 16, the spline shaft 8 passes through the worm 17, and the rotating The wheel 4 is axially fixed with a worm wheel 18 meshing with the worm 17, the upper end of the spline shaft 8 is provided with a first toothed ring 801, the upper end of the worm 17 is provided with a second toothed ring 1701, and after the material roller 5 is wound with the thermal insulation cotton, it pushes the lifting bracket 13 to move downward through the contact roller 14, and the lifting bracket 13 drives the spline shaft 8 to move synchronously through the control rod 15, and the first toothed ring 801 at the upper end of the spline shaft 8 is meshed with the second toothed ring 1701 to drive the worm 17 to rotate, and the worm 17 drives the rotating wheel 4 to rotate through the worm wheel 18, and under the limiting guiding action of the guide bracket 6, the material roller 5 slides out of the guide bracket 6.

[0026] like Figure 2 and Figure 3As shown, it also includes a passage slider 11, and a transmission component 9 is arranged on the passage slider 11. The passage slider 11 is slidably connected to the guide bracket 6. A first elastic member 1101 is connected between the passage slider 11 and the guide bracket 6. Because the passage slider 11 is L-shaped and the spline shaft 8 passes through the bottom of the passage slider 11, the transmission component 9 is specifically composed of a bevel gear group and a spur gear that mesh with each other, one of which is rotatably connected to the bottom of the passage slider 11, and the bevel gear is slidably connected to the spline shaft 8 through a spline, and the other bevel gear is rotatably connected to the side of the passage slider 11, and a spur gear is connected to the bevel gear rotatably connected to the side of the passage slider 11, and the spur gear can be meshed with the transmission gear 10. The passage slider 11 is provided to provide a space for the wheel 4 to drive the material roller 5 to rotate, and the first elastic member 1101 pushes the passage slider 11 to move and reset so that the transmission component 9 can transmit the transmission gear 10.

[0027] like Figure 4 , Figure 5 and Figure 6 As shown, a reset unit is also included, which includes a connecting rod 19, a slotted pry bar 20 and a limiting ring 21. The connecting rod 19 slides longitudinally on the guide bracket 6, and the spline shaft 8 passes through the lower end of the connecting rod 19. The slotted pry bar 20 is rotatably connected to the upper part of the guide bracket 6, and the slotted pry bar 20 is rotatably connected to the upper end of the connecting rod 19. The first gear ring 801 is rotatably connected to the limiting ring 21, and the limiting ring 21 is slidably connected in the slotted pry bar 20. Figure 4Taking the example as an example, after the lower material roller 5 is wound with a sufficient amount of thermal insulation cotton, the thermal insulation cotton pushes the lifting bracket 13 to move downward through the contact roller 14, and the lifting bracket 13 drives the spline shaft 8 to move downward synchronously through the control rod 15. The first toothed ring 801 at the upper end of the spline shaft 8 drives the slotted pry bar 20 to rotate counterclockwise through the limit ring 21, and the slotted pry bar 20 drives the connecting rod 19 to move upward, and the first toothed ring 801 at the upper end of the spline shaft 8 will be engaged with the second toothed ring 1701. The first toothed ring 801 and the second toothed ring 1701 are respectively provided with The magnetic blocks attract each other, and the magnetic force is greater than the elastic force of the second elastic member 1301, so as to ensure that when the contact roller 14 is separated from the thermal insulation cotton wound by the lower material roller 5, the first gear ring 801 and the second gear ring 1701 can always maintain a meshing state, and the first gear ring 801 can drive the worm 17 to rotate through the second gear ring 1701, and the worm 17 drives the rotating wheel 4 to rotate clockwise by meshing with the worm wheel 18, and the lower material roller 5 rotates with the rotating wheel 4 under the limiting guiding action of the guide bracket 6. When the material roller 5 moves to the separation state After leaving the limit position of the guide bracket 6, under the action of gravity, the material roller 5 is led out through the oblique track set on the left side of the guide bracket 6, thereby realizing the effect of automatic discharging, and the upper material roller 5 will continue to rotate clockwise with the rotating wheel 4 to the bottom of the rotating wheel 4. During this period, the transmission gear 10 at the end of the material roller 5 can push the transmission component 9, and then push the passage slider 11 to move downward. When the passage slider 11 moves downward, it contacts and pushes the connecting rod 19 to move downward synchronously. The connecting rod 19 thereby drives the slotted pry bar 20 to rotate clockwise, thereby driving the limit ring 2 1 moves upward, the limiting ring 21 drives the first gear ring 801 to disengage from the second gear ring 1701, the worm 17 stops rotating, and the rotating wheel 4 also stops rotating. At this time, the upper material roller 5 has rotated to the bottom, and is powered by the first power motor 7 through the spline shaft 8 and the transmission assembly 9 to rotate, so as to reel up the thermal insulation cotton, and the initial lower material roller 5 (which has completed reeling) slides out along the guide bracket 6 to complete the material discharge. The staff only needs to put another material roller 5 on the rotating wheel 4 again, and repeat the above actions to reel up the thermal insulation cotton.

[0028] like Figure 5 As shown, a cutter 1302 is also included, and the cutter 1302 is fixed to the upper end of the lifting bracket 13. In this embodiment, the cutter 1302 is a hot melt cutter with its own heat source. When the rotating wheel 4 drives the material roller 5 below that has completed winding to rotate clockwise to discharge the material, the cutter 1302 can cut the thermal insulation cotton.

[0029] like Figure 1 and Figure 7As shown, it also includes a barrel 22, a stirring rod 23 and a crank 24. The feed end of the extruder 2 is provided with a barrel 22, and a stirring rod 23 is rotatably provided in the barrel 22. The crank 24 is driven by the stirring rod 23, and the crank 24 is rotatably connected to the base 1, so that the staff can perform the rotation operation. A transmission rod is arranged on the barrel 22, and the crank 24 transmits the transmission rod through a chain, and the transmission rod transmits the stirring rod 23 through a bevel gear set. Therefore, after the staff puts the raw materials in the barrel 22, if the raw materials need to be stirred, the crank 24 can be rotated, and the crank 24 drives the transmission rod to rotate through the chain, and the transmission rod drives the stirring rod 23 through the bevel gear set to stir the raw materials. As an extension, a servo motor can be arranged in the barrel 22 to directly supply energy to the stirring rod 23.

[0030] like Figure 1 and Figure 8 As shown, the cooling mechanism includes a cooling bin 25, a fan 26 and a guide roller 27. The cooling bin 25 is fixed on the base 1. The fan 26 is provided on the side wall of the cooling bin 25. Four guide rollers 27 arranged laterally are provided in the cooling bin 25. The thermal insulation cotton produced by the extruder 2 is introduced into the cooling bin 25. The fan 26 instantly cools the thermal insulation cotton, and the guide rollers 27 support and conduct the thermal insulation cotton.

[0031] like Figure 1 and Figure 8 As shown, it also includes a second power motor 28, a screw 29, a limit bracket 30 and a limit roller 31. The limit bracket 30 is slidably connected in the cooling bin 25. The limit bracket 30 has a built-in limit roller 31. The three limit rollers 31 are arranged in a staggered manner with the guide roller 27. The second power motor 28 is fixed in the base 1. The output end of the second power motor 28 is connected to the screw 29 through a coupling. The screw 29 is connected to the limit bracket 30 through a thread. After the thermal insulation cotton is placed horizontally on the guide roller 27, the second power motor 28 is started to drive the screw 29 to rotate, and the screw 29 drives the limit bracket 30 to move downward. The limit roller 31 presses the thermal insulation cotton downward, so that the thermal insulation cotton is bent and wound between the guide roller 27 and the limit roller 31, so as to increase the length of the thermal insulation cotton in the cooling bin 25, thereby reducing the cooling water span and saving production space. In this embodiment, the first power motor 7 and the second power motor 28 are both servo motors.

[0032] The working principle of the embodiment of the present invention is as follows: the staff puts the raw material in the barrel 22, and the crank 24 can drive the stirring rod 23 to rotate, the stirring rod 23 can stir the raw material in the barrel 22, the extruder 2 processes the raw material to produce thermal insulation cotton, the thermal insulation cotton is introduced into the cooling bin 25, the fan 26 instantly cools the thermal insulation cotton, and the guide roller 27 supports and conducts the thermal insulation cotton, the second power motor 28 is started to drive the screw 29 to rotate, the screw 29 drives the limit bracket 30 to move downward, and the limit roller 31 presses the thermal insulation cotton downward, so that the thermal insulation cotton is bent and wound between the guide roller 27 and the limit roller 31, so as to increase the length of the thermal insulation cotton in the cooling bin 25, saving production space. After the insulation cotton is cooled by the cooling mechanism, it enters the winding mechanism. The staff fixes the material roller 5 on the rotating wheel 4 by clamping, starts the first power motor 7 to drive the spline shaft 8 to rotate, and the spline shaft 8 drives the transmission gear 10 to rotate through the transmission assembly 9, thereby driving the lower material roller 5 to rotate. The material roller 5 will reel the insulation cotton. When the material roller 5 reels enough insulation cotton, the insulation cotton pushes the lifting bracket 13 to move downward through the contact roller 14. The lifting bracket 13 drives the spline shaft 8 to move downward synchronously through the control rod 15. The first tooth ring 801 at the upper end of the spline shaft 8 drives the slotted pry bar 20 to rotate counterclockwise through the limit ring 21, and the slotted pry bar 20 drives the connecting rod 19 to move upward. The first tooth ring 801 at the upper end of the spline shaft 8 will mesh with the second tooth ring 1701, thereby driving the worm 17 to rotate, and the worm 17 drives the runner 4 to rotate clockwise by meshing with the worm wheel 18. The lower material roller 5 rotates with the runner 4 under the limiting and guiding action of the guide bracket 6, and the cutter 1302 cuts the thermal insulation cotton. When the lower material roller 5 moves to the limit position of the guide bracket 6, the material roller 5 is guided out through the oblique track set on the left side of the guide bracket 6 under the action of gravity, thereby achieving the effect of automatic discharging, and the upper material roller 5 will continue to rotate clockwise with the runner 4 to the bottom of the runner 4. During this period, the transmission gear 10 at the end of the material roller 5 can push the transmission component 9, and then push The movable pass slider 11 moves downward, and when the pass slider 11 moves downward, it contacts and pushes the connecting rod 19 to move downward synchronously. The connecting rod 19 thereby drives the slotted pry bar 20 to rotate clockwise, and then drives the limit ring 21 to move upward. The limit ring 21 drives the first gear ring 801 to disengage from the second gear ring 1701, and the worm 17 stops rotating, and the rotating wheel 4 also stops rotating. At this time, the upper material roller 5 has rotated to the bottom, and is powered by the first power motor 7 through the spline shaft 8 and the transmission assembly 9 to rotate, so as to rewind the thermal insulation cotton. The initial lower material roller 5 slides out along the guide bracket 6 to complete the discharging. The staff only needs to put another material roller 5 on the top of the rotating wheel 4 again, and repeat the above actions to rewind the thermal insulation cotton.

[0033] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An extruder for producing foam rubber thermal insulation cotton, comprising a base (1) and an extruder (2), wherein the extruder (2) is connected to the base (1), and is characterized in that: The extruder (2) further comprises a winding mechanism and a cooling mechanism. The cooling mechanism and the winding mechanism are sequentially arranged at the material output end of the extruder (2). The cooling mechanism cools the thermal insulation cotton produced by the extruder (2). The winding mechanism comprises a winding unit and a discharging unit. The winding unit comprises a mounting frame (3), a rotating wheel (4), a material roller (5), a guide bracket (6), a spline shaft (8) and a transmission assembly (9). The mounting frame (3) is fixedly connected to the base (1). The rotating wheel (4) is rotatably connected to the upper end of the mounting frame (3). The material roller (5) is connected to the periphery of the rotating wheel (4) by means of a sliding engagement. The guide bracket (6) is fixedly connected to the base (1) and limits the position of the material roller (5). The output end of the first power motor (7) fixed to the base (1) is connected to the spline shaft (8). A transmission gear (10) is arranged at the end of the material roller (5). The spline shaft (8) transmits the transmission gear (10) through the transmission assembly (9) to drive the material roller (5) to rotate and rewind the thermal insulation cotton. The discharging unit The invention comprises a fixed sleeve (12), a lifting bracket (13), a contact roller (14), a control rod (15), a fixed bracket (16), a worm (17) and a worm wheel (18); the fixed sleeve (12) is fixed to the base (1); the lifting bracket (13) is slidably connected to the fixed sleeve (12) and a second elastic member (1301) is connected between the two; the upper end of the lifting bracket (13) is provided with a contact roller (14) capable of pressing the thermal insulation cotton wound by the material roller (5); One end of the control rod (15) is rotatably connected to the spline shaft (8), and the other end is connected to the lifting bracket (13); a fixed bracket (16) is connected to the base (1); a worm (17) is rotatably connected to the fixed bracket (16); the spline shaft (8) passes through the worm (17); a worm wheel (18) meshing with the worm (17) is axially fixed to the rotating wheel (4); a first toothed ring (801) is provided at the upper end of the spline shaft (8), and a second toothed ring (1701) is provided at the upper end of the worm (17).

2. The extruder for producing foam rubber thermal insulation cotton according to claim 1, characterized in that: It also includes a passage slider (11), the transmission assembly (9) is arranged on the passage slider (11), the passage slider (11) is slidably connected to the guide bracket (6), and a first elastic member (1101) is connected between the passage slider (11) and the guide bracket (6).

3. The extruder for producing foam rubber thermal insulation cotton according to claim 2, characterized in that: The transmission assembly (9) is composed of a bevel gear set and a spur gear that mesh with each other, wherein one bevel gear is rotatably connected to the bottom of the passage slider (11), and the bevel gear is slidably connected to the spline shaft (8) via a spline, and the other bevel gear is rotatably connected to the side of the passage slider (11), and the bevel gear rotatably connected to the side of the passage slider (11) is connected to the spur gear, and the spur gear can mesh with the transmission gear (10).

4. The extruder for producing foam rubber thermal insulation cotton according to claim 2, characterized in that: The invention also comprises a reset unit, which comprises a connecting rod (19), a slotted prying rod (20) and a limiting ring (21), wherein the connecting rod (19) slides longitudinally on the guide bracket (6), the spline shaft (8) passes through the lower end of the connecting rod (19), the slotted prying rod (20) is rotatably connected to the guide bracket (6), the slotted prying rod (20) is rotatably connected to the upper end of the connecting rod (19), the first gear ring (801) is rotatably connected to the limiting ring (21), and the limiting ring (21) is slidably connected in the slotted prying rod (20).

5. The extruder for producing foam rubber thermal insulation cotton according to claim 4, characterized in that: The first gear ring (801) and the second gear ring (1701) are respectively provided with magnetic blocks capable of attracting each other.

6. An extruder for producing foam rubber thermal insulation cotton according to claim 5, characterized in that: The magnetic force of the magnetic block is greater than the elastic force of the second elastic member (1301).

7. The extruder for producing foam rubber thermal insulation cotton according to claim 5, characterized in that: It also includes a cutter (1302), which is fixed to the upper end of the lifting bracket (13).

8. An extruder for producing foam rubber thermal insulation cotton according to claim 7, characterized in that: It also comprises a barrel (22), a stirring rod (23) and a crank (24); the barrel (22) is arranged at the feeding end of the extruder (2); a stirring rod (23) is rotatably arranged in the barrel (22); and the crank (24) drives the stirring rod (23).

9. An extruder for producing foam rubber thermal insulation cotton according to claim 8, characterized in that: The cooling mechanism comprises a cooling bin (25), a fan (26) and a guide roller (27); the cooling bin (25) is fixed on a base (1); a fan (26) is arranged on a side wall of the cooling bin (25); and guide rollers (27) arranged transversely are arranged in the cooling bin (25).

10. An extruder for producing foam rubber thermal insulation cotton according to claim 9, characterized in that: It also includes a second power motor (28), a screw (29), a limit bracket (30) and a limit roller (31), wherein the limit bracket (30) is slidably connected in the cooling bin (25), the limit bracket (30) has a built-in limit roller (31), the second power motor (28) is fixed in the base (1), the output end of the second power motor (28) is connected to the screw (29) via a coupling, and the screw (29) is connected to the limit bracket (30) via a thread.

Images