Automatic feeding device for thermoplastic SMC material production

Abstract

The invention relates to an automatic feeding device for thermoplastic SMC (sheet molding compound) material production, which is applied to the technical field of pneumatic transmission equipment and comprises a discharging module, a receiving module, a discharging pipeline, a receiving pipeline, an assembly pipe, a telescopic cylinder, a telescopic column, a straight through hole and a receiving hole. When the assembly pipe communicates with the straight through hole, the thermoplastic SMC particles in the discharging pipeline directly penetrate through the assembly pipe through the straight through hole to be conveyed to the next material receiving pipeline, and when the assembly pipe communicates with the material receiving hole, the thermoplastic SMC particles in the discharging pipeline are conveyed into the material receiving pipeline, so that the material receiving module receives the thermoplastic SMC particles. And the assembling pipes selectively communicate with the straight through holes and the material receiving holes, so that the requirement of the discharging module for supplying the thermoplastic SMC particles to the multiple material receiving modules is met, and the production and feeding efficiency of the thermoplastic SMC particles is effectively improved.

Description

Technical Field

[0001] The present invention relates to an automatic feeding device, in particular to an automatic feeding device for producing thermoplastic SMC materials, which is applied in the technical field of pneumatic transmission equipment. Background Art

[0002] Thermoplastic SMC plastic is in white granular form and is made into plastic by adding various additives. Under certain temperature conditions, the plastic can soften or melt into any shape and the shape remains unchanged after cooling.

[0003] Chinese patent CN217555259U discloses "An auxiliary feeding device for thermoplastic polymer materials". Using a driving mechanism, the driving motor will drive the clockwise rotation of the spiral feeding piece through the feeding rod. The rotating spiral feeding piece can transport the thermoplastic plastic particles inside the feeding box from the feeding pipe upward and drop them into the inside of the discharge box, and then transport them to the inside of the processing box through the discharge pipe, thereby completing the feeding of the inside of the processing box. Not only is the feeding efficiency high, but it is also time-saving and labor-saving and more convenient. Chinese patent CN116354117A discloses "A pneumatic conveying system". Through the setting of the expansion pad, during the process of conveying the material, the material will hit the expansion pad, and the expansion pad has a certain buffering effect, which can protect the inner wall of the bent pipe; at the same time, the air cavity is intermittently evacuated and inflated by the inflatable component, which can prevent the material from adhering to the expansion pad and causing the bent pipe to be blocked.

[0004] When adding existing thermoplastic SMC particles into processing equipment, they are generally manually delivered to the interior of the processing equipment using containers. This is not only troublesome and laborious but also has low loading efficiency. Therefore, it is necessary to use automated loading equipment to assist in adding thermoplastic SMC particles into the processing equipment. Thermoplastic SMC particles are light in weight and have the same size and shape, which are particularly suitable for pneumatic conveying of materials. However, the existing pneumatic conveying pipelines are fixed and can mostly only perform one-to-one transmission. In order to be able to feed multiple processing equipment, the pneumatic conveying pipelines need to be branched accordingly. The branching of the pipelines is likely to affect the pneumatic balance, and the flow rate of the thermoplastic SMC particles transported by each branch is prone to fluctuation, making it difficult to achieve uniform feeding to the processing equipment, thereby affecting the production and loading efficiency of the thermoplastic SMC particles. Summary of the Invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the existing pneumatic conveying feeding device is inconvenient to feed materials to multiple processing equipment, which affects the production and feeding efficiency of thermoplastic SMC particles.

[0006] To solve the above problems, the present invention provides an automatic feeding device for thermoplastic SMC material production, comprising a discharge module and a plurality of receiving modules, wherein the output end of the discharge module is fixedly connected to a discharge pipeline, and the input end of the receiving module is fixedly connected to a receiving pipeline, and the discharge pipeline and the receiving pipeline are connected through a gating module; The gating module includes an assembly tube, and the end of the discharge pipeline away from the discharge module is equidistantly connected to the assembly tube. The middle of the assembly tube is fixedly connected with a telescopic cylinder, and the assembly tube is connected to the inside of the telescopic cylinder. The end of the receiving pipeline away from the receiving module is fixedly connected with a telescopic column, the telescopic column is plugged into the telescopic cylinder, and the top and bottom of the telescopic column are respectively provided with a straight-through hole and a receiving hole, one end of the straight-through hole and the receiving hole are connected to the inside of the assembly tube, and the other end of the receiving hole is connected to the receiving pipeline.

[0007] In the automatic feeding device for thermoplastic SMC material production, the telescopic column telescopically moves within the telescopic cylinder, and the assembly pipe selectively connects with the straight-through hole and the receiving hole, so that multiple receiving modules can orderly receive the thermoplastic SMC particles transmitted by wind.

[0008] As a further improvement of the present application, the assembly pipe and the telescopic cylinder are arranged in an inclined cross-arrangement, and the crossing angle between the assembly pipe and the telescopic cylinder is less than 60°. The smaller crossing angle makes it easier for the receiving hole to be connected to the assembly pipe, and the bending angle of the receiving hole is small, which facilitates the pneumatic transmission of thermoplastic SMC particles.

[0009] As a further improvement of the present application, the bottom end of the telescopic cylinder is fixedly connected to an electric push rod, the output end of the electric push rod is fixedly connected to the bottom end of the telescopic column, and the electric push rod is used to mobilize the telescopic column to achieve automatic telescopic adjustment of the telescopic column in the telescopic cylinder.

[0010] As a further improvement of the present application, a ventilation port is provided at the top of the telescopic cylinder, and a filter plug is inserted into the interior of the ventilation port. The telescopic cylinder is connected to the outside world through the ventilation port, which facilitates the automatic telescopic movement of the telescopic column in the telescopic cylinder.

[0011] As a further improvement of the present application, an air-assisting module is fixedly connected to the outside of the top of the telescopic cylinder, and an air-assisting duct is fixedly connected to the air outlet end of the air-assisting module. The air-assisting duct passes through the filter plug, and the filter plug is made of sponge material. An air-assisting hole No. 1 connected to the straight-through hole is provided at the top of the telescopic column, and the end of the air-assisting duct away from the air-assisting module is plugged into the No. 1 air-assisting hole. The air-assisting module transmits air to the straight-through hole through the air-assisting duct, effectively improving the pneumatic transmission capacity of the discharge pipeline and facilitating the long-distance transmission of thermoplastic SMC particles.

[0012] As a further improvement of the present application, the outer sleeve of the telescopic column is provided with a thermal expansion sealing sleeve, and the wind-assisting module includes a hot air unit and a cold air unit. When the wind-assisting module enables the hot air unit to supply air to the straight-through hole, the thermal expansion sealing sleeve expands due to heat, thereby effectively improving the sealing effect of the telescopic column in the telescopic tube and effectively reducing air leakage. Before the telescopic column is about to perform telescopic movement, the wind-assisting module switches to the cold air unit to supply air. After the thermal expansion sealing sleeve shrinks, the telescopic column is easier to perform telescopic movement.

[0013] As a further improvement of the present application, through holes are provided on the surface of the thermal expansion sealing sleeve corresponding to the straight-through hole and the material receiving hole. The thermal expansion sealing sleeve is made of one of silicone rubber, fluororubber, butyl rubber and polyurethane rubber, so that the thermal expansion sealing sleeve is arranged at the position of the straight-through hole and the material receiving hole, effectively improving the sealing connection effect between the straight-through hole and the material receiving hole and the assembly pipe.

[0014] As a further improvement of the present application, a No. 2 air-assisting hole is opened between the straight-through hole and the material receiving hole. The end of the air-assisting pipe away from the air-assisting module is plugged into the No. 2 air-assisting hole. When the assembly pipe is connected to the material receiving hole, the air-assisting pipe is plugged into the No. 2 air-assisting hole to realize air supply to the material receiving hole, thereby effectively improving the pneumatic transmission effect of the material receiving pipeline.

[0015] As a further improvement of the present application, a closing sleeve is fixedly connected to the interior of the No. 2 air-assisting hole, and the closing sleeve is made of one of silicone rubber, fluororubber, butyl rubber and polyurethane rubber. When the air-assisting duct is separated from the No. 2 air-assisting hole, the closing sleeve uses its own elasticity to close the No. 2 air-assisting hole, effectively reducing the influence of the No. 2 air-assisting hole on the straight-through hole.

[0016] As a further improvement of the present application, a clamping plate is fixedly connected to the top inner wall of the material receiving hole. The clamping plate is arranged in a V shape and is fixedly connected to the outside of the conical end of the closing sleeve. The clamping plate is made of spring steel sheet. The conical end of the closing sleeve is clamped by the clamping plate, thereby further effectively improving the sealing effect of the closing sleeve.

[0017] In summary, the discharge module of the present invention performs pneumatic transmission of thermoplastic SMC particles through the discharge pipeline, the receiving module is connected with the discharge pipeline through the receiving pipeline, and telescopically moves in the telescopic cylinder through the telescopic column. When the assembly pipe is connected with the straight-through hole, the thermoplastic SMC particles in the discharge pipeline are directly transmitted through the assembly pipe through the straight-through hole to the next receiving pipeline. When the assembly pipe is connected with the receiving hole, the thermoplastic SMC particles in the discharge pipeline are transferred to the receiving pipeline, thereby realizing the receiving module receiving the thermoplastic SMC particles. The assembly pipe is selectively connected with the straight-through hole and the receiving hole, which facilitates the discharge module to supply the thermoplastic SMC particle needs of multiple receiving modules, effectively improving the production and feeding efficiency of thermoplastic SMC particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1This is an overall three-dimensional structural diagram of the first embodiment of the present application; Figure 2 This is a sectional perspective structural diagram of the assembly pipe and telescopic cylinder according to the first embodiment of the present application; Figure 3 This is a demonstration diagram of the telescopic column extending downward according to the first embodiment of the present application; Figure 4 This is a three-dimensional structural diagram of a telescopic column according to the first embodiment of the present application; Figure 5 This is an overall three-dimensional structural diagram of the second embodiment of the present application; Figure 6 This is a cross-sectional perspective structural diagram of the assembly pipe and telescopic cylinder according to the second embodiment of the present application; Figure 7 This is a three-dimensional structural diagram of a telescopic column and a thermal expansion sealing sleeve according to a second embodiment of the present application; Figure 8 This is an enlarged view of the second air-assisting hole and the sealing sleeve of the third embodiment of the present application; Figure 9 This is an enlarged bottom view of the clamping piece according to the third embodiment of the present application; Figure 10 This is a demonstration diagram of the third embodiment of the present application showing the air-assisting duct being plugged into the No. 2 air-assisting hole.

[0019] Description of the numbers in the figure: 1. Discharging module; 101. Receiving module; 102. Discharging pipeline; 103. Receiving pipeline; 2. Assembly pipe; 201. Telescopic cylinder; 202. Telescopic column; 203. Straight-through hole; 204. Receiving hole; 205. Electric push rod; 206. Air vent; 207. Filter plug; 3. Air-assisting module; 301. Air-assisting pipe; 302. No. 1 air-assisting hole; 303. Thermal expansion sealing sleeve; 304. Through hole; 305. No. 2 air-assisting hole; 306. Closing sleeve; 307. Clamping piece. DETAILED DESCRIPTION

[0020] The following describes three implementation methods of the present application in detail with reference to the accompanying drawings.

[0021] The first implementation method: Figure 1 FIG. 1 shows an automatic feeding device for thermoplastic SMC material production, comprising a discharge module 1 and a plurality of receiving modules 101. The output end of the discharge module 1 is fixedly connected to a discharge pipeline 102, and the input end of the receiving module 101 is fixedly connected to a receiving pipeline 103. The discharge pipeline 102 and the receiving pipeline 103 are connected via a gating module. The gating module includes an assembly pipe 2. The end of the discharge pipeline 102 away from the discharge module 1 is equidistantly connected to the assembly pipe 2. The discharge module 1 performs pneumatic transmission of thermoplastic SMC particles through the discharge pipeline 102. The receiving module 101 is connected to the discharge pipeline 102 through the receiving pipeline 103. The connection between the receiving pipeline 103 and the discharge pipeline 102 is controlled by the gating module, so that the discharge module 1 can supply the thermoplastic SMC particles required by multiple receiving modules 101, effectively improving the production and feeding efficiency of thermoplastic SMC particles. The specific connection control mode of the gating module can be determined according to the inventory of the thermoplastic SMC particles in the receiving module 101 (specifically, a weighing sensor can be used for monitoring, but the weighing sensor is not shown in the figure); To prevent the discharge module 1 from shutting down, the inventory of multiple receiving modules 101 is compared, and the gating module controls the receiving module 101 with the lowest inventory to connect the receiving pipeline 103 with the discharge pipeline 102. In the process of conveying thermoplastic SMC particles to the receiving module 101, the discharge module 1 always maintains the pneumatic conveying state of the thermoplastic SMC particles, minimizing the impact of the shutdown of the discharge module 1 on the transmission efficiency of the thermoplastic SMC particles. This facilitates the simultaneous production of thermoplastic SMC particles in multiple receiving modules 101, effectively improving the production and processing efficiency of the thermoplastic SMC particles.

[0022] Figures 2 to 4 As shown, the middle part of the assembly pipe 2 is fixedly connected with a telescopic cylinder 201, and the assembly pipe 2 is connected to the inside of the telescopic cylinder 201. The assembly pipe 2 and the telescopic cylinder 201 are arranged in an inclined cross-arrangement, and the intersection angle of the assembly pipe 2 and the telescopic cylinder 201 is less than 60 degrees, so that when the receiving hole 204 is connected to the assembly pipe 2, the setting bending angle of the receiving hole 204 is also less than 60 degrees, which facilitates the smooth entry of the thermoplastic SMC particles and the transmission air into the receiving hole 204, and facilitates the pneumatic transmission of the thermoplastic SMC particles. The end of the receiving pipe 103 away from the receiving module 101 is fixedly connected with a telescopic column 202, the telescopic column 202 is plugged into the telescopic cylinder 201, and the top and bottom of the telescopic column 202 are respectively provided with straight-through holes 20 3 and the material receiving hole 204, one end of the straight-through hole 203 and the material receiving hole 204 are both connected to the interior of the assembly tube 2, and the other end of the material receiving hole 204 is connected to the material receiving pipeline 103. The bottom end of the telescopic cylinder 201 is fixedly connected to an electric push rod 205, and the output end of the electric push rod 205 is fixedly connected to the bottom end of the telescopic column 202. The electric push rod 205 is used to mobilize the telescopic column 202 to achieve automatic telescopic adjustment of the telescopic column 202 in the telescopic cylinder 201. The top of the telescopic cylinder 201 is provided with an air vent 206, and a filter plug 207 is inserted into the air vent 206. The telescopic cylinder 201 is connected to the outside world through the air vent 206, which facilitates the automatic telescopic movement of the telescopic column 202 in the telescopic cylinder 201; When the gating module controls the connection between the receiving pipeline 103 and the discharging pipeline 102, the electric push rod 205 is used to drive the telescopic column 202 to telescopically move in the telescopic cylinder 201. When the assembly pipe 2 is connected to the straight-through hole 203, the thermoplastic SMC particles in the discharging pipeline 102 are directly transferred through the straight-through hole 203 and the assembly pipe 2 to the next receiving pipeline 103. When the assembly pipe 2 is connected to the receiving hole 204, the thermoplastic SMC particles in the discharging pipeline 102 are sent to the receiving pipeline 103, thereby realizing that the receiving module 101 receives the thermoplastic SMC particles. Since the discharge pipe 102 is only connected to one of the receiving pipes 103 during the pneumatic conveying of the thermoplastic SMC particles, the pneumatic force for conveying the thermoplastic SMC particles is more concentrated. Compared with the traditional divided-pipe pneumatic conveying, the pneumatic force in the pipe is concentrated, which effectively increases the pneumatic conveying distance of the thermoplastic SMC particles.

[0023] The second implementation method: Compared with the first embodiment, the wind-assisting module 3 is mainly added. The specific new structure is as follows, and the remaining structures are consistent with the first embodiment.

[0024] Figures 5 to 7 The top of the telescopic cylinder 201 is fixedly connected to the air-assisting module 3, and the air outlet end of the air-assisting module 3 is fixedly connected to the air-assisting pipe 301, which passes through the filter plug 207. The filter plug 207 is made of sponge material. The top of the telescopic column 202 is provided with an air-assisting hole 302 connected to the straight hole 203. The end of the air-assisting pipe 301 away from the air-assisting module 3 is plugged into the air-assisting hole 302 (the air-assisting pipe 301 in this embodiment is made of a corrugated hose, and the air-assisting pipe 301 is extended and retracted in and out of the air vent 206 according to the expansion and contraction changes of the telescopic column 202). The air-assisting module 3 transmits air to the straight hole 203 through the air-assisting pipe 301, effectively improving the pneumatic transmission wind force of the discharge pipeline 102, which is convenient for the long-distance transmission of thermoplastic SMC particles. The outer sleeve of the telescopic column 202 is provided with a thermal expansion sealing sleeve 303. The utility model comprises a hot air unit and a cold air unit. When the air-assisting module 3 activates the hot air unit to supply air to the straight-through hole 203, the thermal expansion sealing sleeve 303 expands due to the heat, thereby effectively improving the sealing and bonding effect of the telescopic column 202 in the telescopic cylinder 201 and effectively reducing air leakage. Before the telescopic column 202 is about to perform telescopic movement, the air-assisting module 3 switches to the cold air unit to supply air. After the thermal expansion sealing sleeve 303 contracts, the telescopic column 202 is more likely to perform telescopic movement. Through holes 304 are provided on the surface of the thermal expansion sealing sleeve 303 corresponding to the straight-through hole 203 and the material receiving hole 204. The thermal expansion sealing sleeve 303 is made of one of silicone rubber, fluororubber, butyl rubber and polyurethane rubber, so that the thermal expansion sealing sleeve 303 is sleeved on the positions of the straight-through hole 203 and the material receiving hole 204, effectively improving the sealing connection effect between the straight-through hole 203 and the material receiving hole 204 and the assembly pipe 2. When the assembly pipe 2 is connected to the straight-through hole 203, the thermoplastic SMC particles in the discharge pipe 102 are directly transferred through the straight-through hole 203 and the assembly pipe 2 to the next receiving pipe 103. During this process, the air-assisting module 3 transmits air into the straight-through hole 203 through the air-assisting pipe 301, effectively enhancing the pneumatic transmission wind force of the discharge pipe 102, thereby effectively extending the transmission distance of the thermoplastic SMC particles, and facilitating the thermoplastic SMC particles to be transferred to the next receiving pipe 103 while maintaining sufficient air force; After the telescopic column 202 completes the telescopic position adjustment of the telescopic cylinder 201, the air-assisting module 3 activates the hot air unit to supply hot air to the straight-through hole 203. The supplied hot air causes the thermal expansion sealing sleeve 303 to expand due to heat. The expanded thermal expansion sealing sleeve 303 tightly fills the space between the telescopic column 202 and the telescopic cylinder 201, effectively improving the sealing and bonding effect of the telescopic column 202 and the telescopic cylinder 201, thereby effectively reducing air leakage. Before the telescopic column 202 is about to perform telescopic movement, the air-assisting module 3 switches to the cold air unit to supply air. The supplied cold air causes the thermal expansion sealing sleeve 303 to shrink, effectively reducing the tightness between the telescopic column 202 and the telescopic cylinder 201 (this process is short in time and has little effect on air leakage between the telescopic column 202 and the telescopic cylinder 201). The telescopic column 202 is easier to perform telescopic movement, effectively improving the telescopic adjustment efficiency of the telescopic column 202.

[0025] The third implementation method: Compared with the second embodiment, the second air-assisting hole 305 is mainly added. The specific newly added structure is as follows, and the remaining structures are consistent with the second embodiment.

[0026] Figures 8 to 10As shown, a second air-assisting hole 305 is opened between the straight hole 203 and the receiving hole 204, and the end of the air-assisting pipe 301 away from the air-assisting module 3 is plugged into the second air-assisting hole 305. When the assembly pipe 2 is connected to the receiving hole 204, the air-assisting pipe 301 is plugged into the second air-assisting hole 305 (the air-assisting pipe 301 in this embodiment is made of stainless steel pipe, and the air-assisting pipe 301 is fixed in the telescopic cylinder 201. When the telescopic column 202 moves telescopically, the air-assisting pipe 301 can pass through the first air-assisting hole 302 and then be plugged into the second air-assisting hole 305), realizing air supply to the receiving hole 204, effectively improving the pneumatic transmission effect of the receiving pipeline 103, and the internal fixed connection of the second air-assisting hole 305 There is a closing sleeve 306, which is made of one of silicone rubber, fluororubber, butyl rubber and polyurethane rubber. After the air-assisting pipe 301 is separated from the No. 2 air-assisting hole 305, the closing sleeve 306 uses its own elasticity to close the No. 2 air-assisting hole 305, effectively reducing the influence of the No. 2 air-assisting hole 305 on the straight-through hole 203. A clamping piece 307 is fixedly connected to the top inner wall of the receiving hole 204. The clamping piece 307 is set in a V shape and is fixedly connected to the tapered end of the closing sleeve 306. The clamping piece 307 is made of spring steel sheet. The tapered end of the closing sleeve 306 is clamped by the clamping piece 307, further effectively improving the sealing effect of the closing sleeve 306. When the assembly pipe 2 is connected to the material receiving hole 204, the discharge pipeline 102 is connected to the material receiving pipeline 103 for pneumatic transmission of the thermoplastic SMC particles. After the air-assisting pipe 301 passes through the No. 1 air-assisting hole 302, it is plugged into the No. 2 air-assisting hole 305 to realize air supply to the material receiving hole 204, effectively improving the pneumatic transmission effect of the material receiving pipeline 103. After the air-assisting pipe 301 is separated from the No. 2 air-assisting hole 305, the closing sleeve 306 uses its own elasticity to close the No. 2 air-assisting hole 305, and uses the clamping piece 307 to clamp the tapered end of the closing sleeve 306, further effectively improving the sealing effect of the closing sleeve 306 on the No. 2 air-assisting hole 305.

[0027] In view of current actual needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. An automatic feeding device for the production of thermoplastic SMC materials, characterized by: It comprises a discharge module (1) and a plurality of receiving modules (101), wherein the output end of the discharge module (1) is fixedly connected to a discharge pipeline (102), the input end of the receiving module (101) is fixedly connected to a receiving pipeline (103), and the discharge pipeline (102) and the receiving pipeline (103) are connected via a gating module; The gating module comprises a group pipe (2), one end of the discharge pipe (102) away from the discharge module (1) is equidistantly connected to the group pipe (2), the middle of the group pipe (2) is fixedly connected to a telescopic cylinder (201), and the group pipe (2) is internally connected to the telescopic cylinder (201), and the receiving pipe (103) is fixedly connected to a telescopic column (202) at one end away from the receiving module (101), the telescopic column (202) is plugged into the telescopic cylinder (201), and the top and bottom of the telescopic column (202) are respectively provided with a straight-through hole (203) and a receiving hole (204), one end of each of the straight-through hole (203) and the receiving hole (204) is internally connected to the group pipe (2), and the other end of the receiving hole (204) is connected to the receiving pipe (103).

2. The automatic feeding device for thermoplastic SMC material production according to claim 1, characterized in that: The assembly pipe (2) and the telescopic cylinder (201) are arranged in an oblique and cross-arranged manner, and the crossing angle between the assembly pipe (2) and the telescopic cylinder (201) is less than 60°.

3. The automatic feeding device for thermoplastic SMC material production according to claim 1, characterized in that: The bottom end of the telescopic cylinder (201) is fixedly connected to an electric push rod (205), and the output end of the electric push rod (205) is fixedly connected to the bottom end of the telescopic column (202).

4. The automatic feeding device for thermoplastic SMC material production according to claim 1, characterized in that: A vent (206) is provided at the top end of the telescopic cylinder (201), and a filter plug (207) is inserted into the interior of the vent (206).

5. The automatic feeding device for thermoplastic SMC material production according to claim 4, characterized in that: The top of the telescopic cylinder (201) is fixedly connected to an air-assisting module (3) on the outside, and the air outlet end of the air-assisting module (3) is fixedly connected to an air-assisting pipe (301), and the air-assisting pipe (301) passes through the filter plug (207), and the filter plug (207) is made of sponge material. The top of the telescopic column (202) is provided with an air-assisting hole (302) connected to the straight-through hole (203), and the end of the air-assisting pipe (301) away from the air-assisting module (3) is plugged into the air-assisting hole (302).

6. The automatic feeding device for thermoplastic SMC material production according to claim 5, characterized in that: The outer sleeve of the telescopic column (202) is provided with a thermal expansion sealing sleeve (303), and the wind-assisting module (3) comprises a hot air unit and a cold air unit.

7. The automatic feeding device for thermoplastic SMC material production according to claim 6, characterized in that: Through holes (304) are provided on the surface of the thermal expansion sealing sleeve (303) corresponding to the straight through hole (203) and the material receiving hole (204). The thermal expansion sealing sleeve (303) is made of one of silicone rubber, fluororubber, butyl rubber and polyurethane rubber.

8. The automatic feeding device for thermoplastic SMC material production according to claim 5, characterized in that: A second air-assisting hole (305) is provided between the straight-through hole (203) and the material receiving hole (204), and one end of the air-assisting pipe (301) away from the air-assisting module (3) is plugged into the second air-assisting hole (305).

9. The automatic feeding device for thermoplastic SMC material production according to claim 8, characterized in that: A sealing sleeve (306) is fixedly connected to the interior of the second air-assisting hole (305), and the sealing sleeve (306) is made of one of silicone rubber, fluororubber, butyl rubber and polyurethane rubber.

10. The automatic feeding device for producing thermoplastic SMC materials according to claim 9, characterized in that: The closing sleeve (306) is arranged in a funnel shape, and a clamping piece (307) is fixedly connected to the top inner wall of the material receiving hole (204). The clamping piece (307) is arranged in a V shape and is fixedly connected to the outside of the tapered end of the closing sleeve (306). The clamping piece (307) is made of spring steel sheet.

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