Imitation handmade encrusting machine

Abstract

The invention discloses an imitation handmade encrusting machine. Relates to the technical field of encrusting tools and comprises a workbench, universal wheels facilitating movement of the workbench and a supporting seat facilitating supporting of the workbench, a shell is installed on one side of the top face of the workbench, and a material fixing assembly is arranged in the shell; a stuffing wrapping assembly is arranged on the front end face of the workbench, and a stirring and discharging assembly is arranged at the upper end of the workbench; through cooperation of the stirring shaft and the spiral blades, quantitative feeding of stuffing is facilitated, the quality of each product is guaranteed, and the stability of the product quality is improved; through cooperation of the conveying belt, the visual sensor and the displacement sensor, rapid quantitative discharging and rapid movement to a stuffing wrapping area are facilitated, and the working efficiency is improved; through the cooperation of the moving frame and the conveying belt, the falling height of wrappers wrapped with stuffing can be conveniently reduced, the situation that the wrappers wrapped with the stuffing fall from a high place heavily and consequently the wrappers are broken is avoided, and the situation that wrapped products are stacked is also avoided; and the original manual taste of the food can be ensured while high-efficiency food production is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of stuffing tools, and particularly to a manual imitation stuffing machine. Background Art

[0002] With the improvement of people's living standards and the acceleration of the pace of life, the demand for various stuffed foods is increasing continuously; taking steamed buns and dumplings as examples, as traditional delicacies, they are deeply loved by consumers. Whether it is for daily family meals, restaurant operations, or as convenient breakfast foods, the market demand is very strong; The existing stuffing machines generally consist of a conveyor belt for transporting dough and stuffing, and a cutter head that can wrap the dough around the stuffing. In the operation of the existing stuffing machines, workers are required to place the stuffing on the dough and then place the dough with the stuffing on the conveyor belt. The conveyor belt transports the dough with the stuffing to the wrapping area. This process still requires manual operation, and when workers place the stuffing on the dough, the quality of the stuffing may be uneven; in addition, after the existing stuffing machine finishes stuffing the dough, the stuffed dough is directly discharged, and the stuffed dough and the stuffing will fall heavily from a height, which may cause the dough to rupture, seriously affecting the consistency and quality stability of the products; therefore, improvement measures need to be taken according to the above problems; while ensuring high-efficiency food production, it can also ensure the original manual taste of the food. Summary of the Invention

[0003] The purpose of the present invention is to solve the deficiencies existing in the prior art, and a manual imitation stuffing machine is proposed.

[0004] To achieve the above purpose, the present invention adopts the following technical scheme: a manual imitation stuffing machine, including a workbench, universal wheels for facilitating the movement of the workbench, and a support base for facilitating the support of the workbench. One side of the upper end of the workbench is provided with a control console, and one side of the top surface of the workbench is provided with a housing. A material positioning component is arranged inside the housing; a stuffing component is arranged on the front end surface of the workbench, and a stirring and feeding component is arranged on the upper end of the workbench.

[0005] Preferably, the stuffing component includes a transmission roller group arranged on one side of the front end of the workbench. A part of the transmission rollers of the transmission roller group is rotatably connected to the workbench. A chute is opened on one side of the front end surface of the workbench. A moving seat is slidably connected in the chute. The other part of the transmission rollers is connected to the moving seat. A conveyor belt is sleeved outside the transmission roller group. A vision sensor is installed on the top surface of the rear end of the moving seat, and a displacement sensor is installed on one side of the front end of the top surface of the moving seat.

[0006] Preferably, a first motor and a second motor are installed inside the workbench. The first motor is connected to one of the transmission rollers in the transmission roller group through a coupling. An output wheel of the second motor is sleeved with a belt, the other end of the belt is sleeved with an auxiliary wheel, and the lower end of the belt is connected to the moving seat.

[0007] Preferably, the stirring and feeding assembly includes a support frame installed on the other side of the top surface of the workbench. A gantry is installed on the top surface of the support frame, and a feeding hopper is installed inside the support frame. A third motor is installed in the middle of the top surface of the gantry. The output shaft of the third motor penetrates through the gantry, and the output shaft of the third motor is connected to a stirring shaft through a coupling. A spiral blade is installed at the lower end of the stirring shaft, and the spiral blade is placed in the feeding port of the feeding hopper.

[0008] Preferably, the stuffing assembly includes a positioning plate installed on the front end face of the workbench. The positioning plate is located at one end of the conveyor belt; a guiding port is opened in the middle of the top surface of the positioning plate, and a cavity is opened inside the positioning plate. A driving gear is rotatably connected to one side inside the cavity, and a driven gear is rotatably connected to the bottom surface inside the cavity. A connecting gear is meshed and transmitted between two adjacent driven gears. The driving gear is meshed and transmitted with one of the driven gears. The upper ends of the connecting shafts of the driven gear and the driving gear penetrate through the workbench, and a cutter is installed at the upper end of the connecting shaft of the driven gear.

[0009] Preferably, a positioning frame is installed inside the workbench. A fourth motor is installed inside the positioning frame. The output shaft of the fourth motor is connected to a first connecting rod. The other end of the first connecting rod is movably hinged to a first connecting rod. The first connecting rod penetrates through the workbench, and the other end of the first connecting rod is movably hinged to a second connecting rod. The other end of the second connecting rod is connected to the connecting shaft of the driving gear.

[0010] Preferably, a moving frame is provided at the front end of the workbench. The rear end of the moving frame is slidably connected to the guide rail, and the lower end of the moving frame is movably hinged to a second connecting rod. The other end of the second connecting rod is movably hinged to a third connecting rod. The other end of the third connecting rod is connected to the output shaft of a fifth motor, and the fifth motor is installed inside the workbench.

[0011] Preferably, a sixth motor is installed at the lower end inside the moving frame, and a conveyor belt is installed at the upper end inside the moving frame. Transmission rollers are sleeved at both ends of the conveyor belt, and the transmission rollers are connected to the output wheel of the sixth motor through a chain belt.

[0012] Preferably, the material positioning assembly includes a fixing frame disposed inside the housing. An electric push rod is installed on the top surface of the fixing frame. The output shaft of the electric push rod penetrates through the fixing frame, and the output shaft of the electric push rod is connected to a lifting frame. A positioning cylinder is installed on the bottom surface of the lifting frame. The upper end of the positioning cylinder is connected to an air receiving pipe. The air receiving pipe is installed on the top surface of the lifting frame, and the air receiving pipe is externally connected to an air pump through a connecting pipe.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: Through the cooperation of the stirring shaft and the spiral blades, it is convenient to quantitatively discharge the filling, ensuring the quality of each product and improving the stability of the product quality; Through the cooperation of the conveyor belt, the vision sensor and the displacement sensor, it is convenient to quickly and quantitatively discharge the material and quickly move it to the stuffing area, improving the working efficiency; Through the cooperation of the moving frame and the conveyor belt, it is convenient to reduce the falling height of the dough wrapped with the filling, avoiding the rupture of the dough wrapped with the filling caused by falling from a high place, and also avoiding the stacking of the wrapped products, thus facilitating the complete discharge of the products; Through the cooperation of the cutter, the positioning cylinder and the air receiving pipe, it is convenient for the dough to completely wrap the filling, avoiding the situation of stuffing leakage and improving the yield of the products. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the present invention, and constitute a part of this application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 is a schematic three-dimensional structure diagram of the whole of the present invention; Figure 2 is a schematic connection diagram of the driving roller set and the conveyor belt of the present invention; Figure 3 is a schematic installation diagram of the first motor and the second motor of the present invention; Figure 4 is a schematic three-dimensional structure diagram of the stirring and discharging assembly of the present invention; Figure 5 is a schematic three-dimensional structure diagram of the stuffing assembly of the present invention; Figure 6 is a schematic internal structure diagram of the stuffing assembly of the present invention; Figure 7 is a schematic connection diagram of the moving frame and the conveyor belt of the present invention; Figure 8 is a schematic three-dimensional structure diagram of the material positioning assembly of the present invention; Sequence numbers in the figure: 1, workbench; 2, universal wheel; 3, support base; 4, control console; 5, housing; 6, drive roller set; 7, first motor; 8, conveyor belt; 9, moving seat; 10, belt; 11, second motor; 12, guide rail; 13, vision sensor; 14, displacement sensor; 15, support frame; 16, gantry; 17, hopper; 18, third motor; 19, stirring shaft; 20, spiral blade; 21, positioning plate; 22, positioning frame; 23, fourth motor; 24, first connecting rod; 25, first connecting bar; 26, second connecting rod; 27, driving gear; 28, driven gear; 29, connecting gear; 30, cutter; 31, moving frame; 32, fifth motor; 33, third connecting rod; 34, second connecting bar; 35, sixth motor; 36, conveyor belt; 37, fixing frame; 38, electric push rod; 39, lifting frame; 40, positioning cylinder; 41, air intake pipe. Specific implementation mode

[0015] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0016] Embodiment 1: Refer to Figure 1-8, the manual-like stuffing machine in the present invention includes a workbench 1, universal wheels 2 facilitating the movement of the workbench 1, and a support base 3 facilitating the support of the workbench 1. A control console 4 is installed at the upper end of one side of the workbench 1, and a housing 5 is installed on one side of the top surface of the workbench 1. A material positioning assembly is provided inside the housing 5; a stuffing assembly is provided on the front end surface of the workbench 1, and a stirring and feeding assembly is provided at the upper end of the workbench 1; the movement and positioning of the workbench 1 are facilitated by the universal wheels 2 and the support base 3; the positioning of the stuffing is facilitated by the material positioning assembly for subsequent stuffing; the stuffing assembly facilitates wrapping the bun wrapper around the stuffing; the stirring and feeding assembly facilitates the uniform mixing of the stuffing and then facilitates the quantitative feeding; the stuffing assembly includes a transmission roller group 6 provided on one side of the front end of the workbench 1. A part of the transmission rollers in the transmission roller group 6 is rotatably connected to the workbench 1. A chute is provided on one side of the front end surface of the workbench 1, and a moving seat 9 is slidably connected in the chute. The other part of the transmission rollers is connected to the moving seat 9, and a transmission belt 8 is sleeved outside the transmission roller group 6. A visual sensor 13 is installed on the top surface of the rear end of the moving seat 9, and a displacement sensor 14 is installed on one side of the front end of the top surface of the moving seat 9; the movement of the transmission belt 8 is facilitated by the transmission roller group 6; the transmission of the bun wrapper is facilitated by the transmission belt 8; the movement of a part of the transmission rollers above the multiple cutters 30 is facilitated by the moving seat 9; the detection of whether the leather material reaches the designated position is facilitated by the visual sensor 13, so as to facilitate the correct placement of the stuffing directly above the leather material. The model of the visual sensor 13 is In-Sight2000; the detection of whether the transmission belt 8 reaches directly above the cutter 30 is facilitated by the displacement sensor 14, so as to facilitate the rapid retraction of the moving seat 9, and then the leather material and the stuffing fall on the positioning plate 21. The model of the displacement sensor 14 is SPNS09-5A; a first motor 7 and a second motor 11 are installed inside the workbench 1. The first motor 7 is connected to one of the transmission rollers in the transmission roller group 6 through a coupling. The output wheel of the second motor 11 is sleeved with a belt 10. The other end of the belt 10 is sleeved with an auxiliary wheel, and the lower end of the belt 10 is connected to the moving seat 9; the rotation of the transmission belt 8 is facilitated by the first motor 7; the movement of the belt 10 is facilitated by the second motor 11, and the movement of the moving seat 9 is facilitated by the belt 10.

[0017] Embodiment 2: It is basically the same as the technical solution of Embodiment 1, except that, as Figure 4 , Figure 5 , Figure 6As shown in the figure, the stirring and feeding assembly includes a support frame 15 installed on the other side of the top surface of the workbench 1. A gantry 16 is installed on the top surface of the support frame 15, and a feeding hopper 17 is installed inside the support frame 15. In the middle of the top surface of the gantry 16, a third motor 18 is installed. The output shaft of the third motor 18 penetrates through the gantry 16, and the output shaft of the third motor 18 is connected with a stirring shaft 19 through a coupling. A spiral blade 20 is installed at the lower end of the stirring shaft 19, and the spiral blade 20 is placed in the feeding port of the feeding hopper 17. The support frame 15 facilitates the installation of the feeding hopper 17; the gantry 16 facilitates the installation of the third motor 18; the feeding hopper 17 facilitates the loading of the filling; the third motor 18 facilitates controlling the rotation of the stirring shaft 19; the stirring shaft 19 facilitates controlling the rotation of the spiral blade 20; the spiral blade 20 realizes the quantitative feeding of the filling. The stuffing assembly includes a positioning plate 21 installed on the front end surface of the workbench 1, and the positioning plate 21 is placed at one end of the conveyor belt 8. In the middle of the top surface of the positioning plate 21, a guiding port is opened, and a cavity is opened inside the positioning plate 21. On one side inside the cavity, a driving gear 27 is rotatably connected, and on the bottom surface inside the cavity, a driven gear 28 is rotatably connected. A connecting gear 29 is meshed and transmitted between two adjacent driven gears 28. The driving gear 27 is meshed and transmitted with one of the driven gears 28. The upper ends of the connecting shafts of the driven gear 28 and the driving gear 27 penetrate through the workbench 1, and a cutter 30 is installed at the upper end of the connecting shaft of the driven gear 28. The positioning plate 21 facilitates supporting the dough and the filling; the driving gear 27 facilitates driving the rotation of the driven gear 28, the connecting gear 29 facilitates controlling the rotation of other driven gears 28, and the driven gear 28 facilitates controlling the cutter 30 to perform the dough rolling operation on the dough. A positioning frame 22 is installed inside the workbench 1. A fourth motor 23 is installed inside the positioning frame 22. The output shaft of the fourth motor 23 is connected with a first connecting rod 24. The other end of the first connecting rod 24 is movably hinged with a first connecting rod 25. The first connecting rod 25 penetrates through the workbench 1, and the other end of the first connecting rod 25 is movably hinged with a second connecting rod 26. The other end of the second connecting rod 26 is connected with the connecting shaft of the driving gear 27. The positioning frame 22 facilitates the installation of the fourth motor 23, the fourth motor 23 and the first connecting rod 24 facilitate controlling the first connecting rod 25 to move back and forth; the first connecting rod 25 and the second connecting rod 26 facilitate controlling the rotation of the driving gear 27.

[0018] Embodiment 3: It is basically the same as the technical solution of Embodiment 1, except that, as Figure 7 、 Figure 8As shown in the figure, a moving frame 31 is provided at the front end of the workbench 1. The rear end of the moving frame 31 is slidably connected to the guide rail 12. And a second connecting rod 34 is movably hinged to the lower end of the moving frame 31. The other end of the second connecting rod 34 is movably hinged to a third connecting rod 33. The other end of the third connecting rod 33 is connected to the output shaft of a fifth motor 32. The fifth motor 32 is installed inside the workbench 1. The moving frame 31 facilitates the installation of the conveyor belt 36. By means of the second connecting rod 34, the third connecting rod 33 and the fifth motor 32, it is convenient to control the sliding of the moving frame 31 on the guide rail 12, so that the conveyor belt 36 moves up and down. A sixth motor 35 is installed at the lower end inside the moving frame 31. And a conveyor belt 36 is installed at the upper end inside the moving frame 31. Both ends of the conveyor belt 36 are sleeved with transmission rollers. The transmission rollers are connected to the output pulley of the sixth motor 35 through a chain belt. By means of the sixth motor 35 and the moving frame 31, it is convenient to control the rotation of the conveyor belt 36, and then the wrapped filling is smoothly placed on the conveyor belt 36 and discharged forward. The material positioning assembly includes a fixed frame 37 provided inside the housing 5. An electric push rod 38 is installed on the top surface of the fixed frame 37. The output shaft of the electric push rod 38 penetrates the fixed frame 37. And the output shaft of the electric push rod 38 is connected to a lifting frame 39. A positioning cylinder 40 is installed on the bottom surface of the lifting frame 39. The upper end of the positioning cylinder 40 is connected to an air receiving pipe 41. The air receiving pipe 41 is installed on the top surface of the lifting frame 39. And the air receiving pipe 41 is externally connected to an air pump through a connecting pipe. The fixed frame 37 facilitates the installation of the electric push rod 38. By means of the electric push rod 38, it is convenient to control the lifting of the lifting frame 39. By means of the lifting frame 39, it is convenient to install the positioning cylinder 40. By means of the positioning cylinder 40, it is convenient to position the periphery of the skin material. By externally connecting an air pump to the air receiving pipe 41, the gas is blown towards the skin material, causing the middle of the skin material to sink downward, thus facilitating subsequent stuffing.

[0019] Working principle: In this embodiment, the present invention also proposes a method for using a manual stuffing machine imitating manual operation, including the following steps: Step 1, first connect the wires of all electrical equipment and power on, and then set it according to the type of stuffing required and through the console 4; Pour the stuffing into the blanking hopper 17, and then start the first motor 7. Control the rotation of the transmission roller group 6 through the first motor 7, so as to control the rotation of the conveyor belt 8. Then place the skin material on the conveyor belt 8. When the visual sensor 13 detects that the skin material reaches directly below the blanking hopper 17 during the transportation of the skin material by the conveyor belt 8, stop the first motor 7 and start the third motor 18. Control the rotation of the stirring shaft 19 and the spiral blade 20 through the third motor 18, so as to quantitatively discharge the stuffing in the blanking hopper 17 and drop it on the skin material directly below the blanking hopper 17. Step 2: Then stop the third motor 18 and start the first motor 7 and the second motor 11. Control the movement of the moving seat 9 through the second motor 11, and then control one end of the conveyor belt 8 to move directly above the positioning plate 21 equipped with multiple cutters 30. When the displacement sensor 14 detects that one end of the conveyor belt 8 is positioned directly above the positioning plate 21, then control the second motor 11 to rotate in the reverse direction, so as to control one end of the conveyor belt 8 to move away from the positioning plate 21. During this process, the leather material and the filling will fall onto the positioning plate 21. Then start the electric push rod 38, control the lifting of the lifting frame 39, and then control the lifting of the positioning cylinder 40, press the positioning cylinder 40 against the periphery of the leather material, start the air pump, blow gas towards the middle of the leather material through the air connection pipe 41, make the middle of the leather material sink downward, and then control the positioning cylinder 40 to rise; Step 3: Start the fourth motor 23, control the rotation of the first connecting rod 24 through the fourth motor 23, and through the first connecting rod 24, the first connecting rod 25 and the second connecting rod 26, make the connecting shaft of the driving gear 27 rotate, and then drive the driving gear 27 to rotate. Through the meshing transmission between the driving gear 27 and one of the driven gears 28, and then through the meshing transmission between the connecting gear 29 and the driven gear 28, control the rotation of all the driven gears 28, and then control the rotation of the cutters 30, so as to realize the operation of rolling the leather material by multiple cutters 30, and then realize the wrapping of the leather material around the filling; Then control the fourth motor 23 to rotate in the reverse direction and start the fifth motor 32. Through the reverse rotation of the fourth motor 23, control the cutters 30 to open outward, so that the wrapped filling falls off; Step 4: Before the wrapped filling falls, use the fifth motor 32, the third connecting rod 33 and the second connecting rod 34 to lift and lower the moving frame 31. Through the rising of the moving frame 31, reduce the falling distance of the wrapped filling, so that the wrapped filling can stably fall on the conveyor belt 36 without causing the leather material to crack; Then control the fifth motor 32 to rotate in the reverse direction and start the sixth motor 35, so as to control the lowering of the moving frame 31, and control the rotation of the conveyor belt 36 through the sixth motor 35, and then transport the wrapped filling out; Repeat the above steps to realize the operation of multiple stuffing and discharging; Finally, cut off the power supply of all electrical equipment.

[0020] As mentioned above, it is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. Handmade-like stuffing machine, including a workbench (1), universal wheels (2) facilitating the movement of the workbench (1), and a support base (3) facilitating the support of the workbench (1), characterized in that: One end of the upper side of the workbench (1) is provided with a control console (4), and one side of the top surface of the workbench (1) is provided with a housing (5). A blanking component is arranged inside the housing (5). A stuffing component is arranged on the front end surface of the workbench (1), and a stirring and blanking component is arranged above the workbench (1).

2. The hand-mimicking stuffing machine according to claim 1, wherein: The stuffing component includes a driving roller group (6) arranged on one side of the front end of the workbench (1). A part of the driving rollers of the driving roller group (6) is rotatably connected to the workbench (1). A chute is formed on one side of the front end surface of the workbench (1). A moving seat (9) is slidably connected in the chute. The other part of the driving rollers is connected to the moving seat (9). A transmission belt (8) is sleeved outside the driving roller group (6). A vision sensor (13) is installed on the top surface at the rear end of the moving seat (9), and a displacement sensor (14) is installed on one side of the front end of the top surface of the moving seat (9).

3. The hand-mimicking stuffing machine according to claim 2, wherein: A first motor (7) and a second motor (11) are installed inside the workbench (1). The first motor (7) is connected to one of the driving rollers in the driving roller group (6) through a coupling. An output wheel of the second motor (11) is sleeved with a belt (10). The other end of the belt (10) is sleeved with an auxiliary wheel, and the lower end of the belt (10) is connected to the moving seat (9).

4. The hand - imitating stuffing machine according to claim 1, wherein: The stirring and blanking component includes a support frame (15) installed on the other side of the top surface of the workbench (1). A gantry (16) is installed on the top surface of the support frame (15). A blanking hopper (17) is installed inside the support frame (15). A third motor (18) is installed in the middle of the top surface of the gantry (16). The output shaft of the third motor (18) penetrates through the gantry (16). The output shaft of the third motor (18) is connected to a stirring shaft (19) through a coupling. A spiral blade (20) is installed at the lower end of the stirring shaft (19). The spiral blade (20) is placed in the blanking port of the blanking hopper (17).

5. The hand - imitating stuffing machine according to claim 1, wherein: The stuffing component includes a positioning plate (21) installed on the front end surface of the workbench (1). The positioning plate (21) is placed at one end of the transmission belt (8). A guiding port is formed in the middle of the top surface of the positioning plate (21). A cavity is formed inside the positioning plate (21). A driving gear (27) is rotatably connected to one side inside the cavity. A driven gear (28) is rotatably connected to the bottom surface inside the cavity. A connecting gear (29) is meshed and transmitted between two adjacent driven gears (28). The driving gear (27) is meshed and transmitted with one of the driven gears (28). The connecting shafts of the driven gear (28) and the driving gear (27) penetrate through the workbench (1) upward. A cutter (30) is installed at the upper end of the connecting shaft of the driven gear (28).

6. The hand-mimicking stuffing machine according to claim 5, wherein: A positioning frame (22) is installed inside the workbench (1). A fourth motor (23) is installed inside the positioning frame (22). The output shaft of the fourth motor (23) is connected to a first connecting rod (24). The other end of the first connecting rod (24) is movably hinged to a first connecting rod (25). The first connecting rod (25) penetrates through the workbench (1), and the other end of the first connecting rod (25) is movably hinged to a second connecting rod (26). The other end of the second connecting rod (26) is connected to the connecting shaft of the driving gear (27).

7. The hand - imitating stuffing machine according to claim 1, wherein: A moving frame (31) is provided at the front end of the workbench (1). The rear end of the moving frame (31) is slidably connected to the guide rail (12). The lower end of the moving frame (31) is movably hinged to a second connecting rod (34). The other end of the second connecting rod (34) is movably hinged to a third connecting rod (33). The other end of the third connecting rod (33) is connected to the output shaft of a fifth motor (32). The fifth motor (32) is installed inside the workbench (1).

8. The hand-mimicking stuffing machine according to claim 7, wherein: A sixth motor (35) is installed at the lower end inside the moving frame (31). A conveyor belt (36) is installed at the upper end inside the moving frame (31). Both ends of the conveyor belt (36) are sleeved with transmission rollers. The transmission rollers are connected to the output pulley of the sixth motor (35) through a chain belt.

9. The hand-made dumpling stuffing machine according to claim 1, wherein: The material positioning assembly includes a fixed frame (37) provided inside the housing (5). An electric push rod (38) is installed on the top surface of the fixed frame (37). The output shaft of the electric push rod (38) penetrates through the fixed frame (37). The output shaft of the electric push rod (38) is connected to a lifting frame (39). A positioning cylinder (40) is installed on the bottom surface of the lifting frame (39). The upper end of the positioning cylinder (40) is connected to an air receiving pipe (41). The air receiving pipe (41) is installed on the top surface of the lifting frame (39). The air receiving pipe (41) is externally connected to an air pump through a connecting pipe.

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