Automatic feeding device for stamping inner cover of electric cooker

Abstract

The invention discloses an electric cooker inner cover stamping automatic feeding device which comprises a discharging assembly, a storage device is fixedly mounted at the top of the discharging assembly, a plurality of inner cover material plates are placed in the storage device, a flattening device is fixedly mounted on one side of the discharging assembly, and a positioning device is fixedly mounted on one side of the flattening device. The device can discharge only one inner cover material plate at a time, the situation that multiple materials are mutually adsorbed, consequently, suction of a suction cup of automatic feeding equipment fails, and the feeding effect of the automatic feeding equipment is affected is avoided, the inner cover material plates are flattened through extrusion between a driving roller and a pressing roller, and the situation that the multiple inner cover material plates are stacked, consequently, the inner cover material plates at the bottom deform is avoided; the inner cover material plate is flattened before being fed, the stamping effect of the electric cooker inner cover is improved, the positioning wheels extrude the four positions of the inner cover material plate, the inner cover material plate is positioned at the top of the fixing table, automatic positioning is achieved, and the stamping precision of the device is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of stamping of inner lids of rice cookers. More specifically, the present invention relates to an automatic feeding device for stamping the inner lids of rice cookers. Background Art

[0002] A rice cooker is a household appliance used to simplify the traditional rice - cooking process. It automatically completes functions such as rice - cooking and heat - preservation through built - in heating elements and temperature control systems. The design of a rice cooker generally includes a housing, an inner pot, a heating plate, a temperature control device, and a heat - preservation layer. Among them, the inner lid of the rice cooker is an important component. It is usually connected to the upper lid and seals the inner pot during the cooking process. The inner lid of the rice cooker includes air vents. These holes allow steam to escape during cooking while maintaining an appropriate internal pressure, which helps in the uniform cooking and ripening of rice. The inner lids of some rice cookers are detachable, and such a design facilitates cleaning.

[0003] The inner lid of the rice cooker is formed by stamping equipment. In the prior art, mechanical automatic feeding or manual feeding is usually adopted. Mechanical automatic feeding adsorbs and transports materials to the stamping machine through a mechanical suction cup. Since the materials are thin plates, when multiple materials are stacked together, they will fit tightly, and a negative pressure will be formed between the materials. When the suction cup adsorbs the materials, it may cause the failure of material adsorption or take away multiple materials together. Although the adsorbed materials are separated by shaking, during the shaking process, sometimes the suction cup may also fail to adsorb or the materials may be deformed, which not only affects the efficiency of mechanical automatic feeding but also affects the stamping effect of the inner lid of the rice cooker. Summary of the Invention

[0004] In order to overcome the above - mentioned defects of the prior art, the present invention provides an automatic feeding device for stamping the inner lid of a rice cooker, which avoids the mutual adsorption of multiple materials, resulting in the failure of the suction cup of the automatic feeding device to adsorb and affecting the feeding effect of the automatic feeding device, and avoids the stacking of multiple inner lid material plates, resulting in the deformation of the bottom inner lid material plate, making the inner lid material plate flat before feeding, improving the stamping effect of the inner lid of the rice cooker, enabling the inner lid material plate to be accurately fed into the interior of the stamping equipment, automatically positioning, and improving the stamping accuracy of the device, so as to solve the problems raised in the above - mentioned background art.

[0005] To achieve the above object, the present invention provides the following technical solution: An automatic feeding device for stamping the inner lid of a rice cooker, including a blanking assembly, a storage device is fixedly installed at the top of the blanking assembly, a plurality of inner lid material plates are placed inside the storage device, a flattening device is fixedly installed on one side of the blanking assembly, and a positioning device is fixedly installed on one side of the flattening device;

[0006] The unloading assembly includes a bottom plate, support feet are fixedly installed on both sides of the bottom of the bottom plate, unloading cylinders are fixedly installed on both ends of one side of the bottom of the bottom plate, a telescopic rod is provided on one side of the unloading cylinder, a connecting frame is fixedly installed on one side of the telescopic rod, a pushing rod is fixedly installed on one side of the connecting frame, the top of the bottom plate is fixedly connected to the storage device, and the pushing rod is slidably installed between the bottom plate and the storage device.

[0007] In a preferred embodiment, the material storage device includes a material unloading base, four limit rods are fixedly installed on the top of the material unloading base, a material unloading port is opened inside the material unloading base, the limit rods are movably sleeved on the outer surface of the inner cover material plate, the inner cover material plate is movably sleeved inside the material unloading port, and a material unloading pipe is fixedly installed inside the material unloading base.

[0008] In a preferred embodiment, a movable groove is opened on one side of the feeding tube, a support frame is fixedly installed inside the feeding base, a rotating ring is rotatably installed on the top of the support frame, and arc-shaped racks are fixedly installed at four sides of the inner wall of the rotating ring, a fixed shaft is fixedly installed on one side of the arc-shaped rack inside the feeding tube, a rotating block is rotatably installed on the outer surface of the fixed shaft, a fixed gear is fixedly sleeved on the upper end of the rotating block, a closing plate is fixedly sleeved on the lower end of the rotating block, the closing plate is rotatably installed inside the feeding tube, the closing plate is rotatably installed below the support frame, the closing plate is rotatably installed inside the feeding port, a rotating rod is fixedly installed on one side of the rotating ring, and the rotating rod is rotatably installed inside the movable groove.

[0009] In a preferred embodiment, a discharge trough is formed between the unloading base and the bottom plate, the push rod is slidably installed inside the discharge trough, and the height of the discharge trough corresponds to the thickness of the inner cover material plate.

[0010] In a preferred embodiment, the flattening device includes a fixed frame, a limiting groove is provided at the upper end of the fixed frame, a movable block is slidably installed inside the limiting groove, a pressing roller is rotatably installed inside the movable block, an extrusion spring is provided at the upper end of the limiting groove, the bottom of the extrusion spring is fixedly installed on the top of the movable block, a rotating motor is fixedly installed on one side of the lower end of the fixed frame, a driving roller is fixedly installed on one side of the rotating motor, and the driving roller is rotatably installed below the pressing roller.

[0011] In a preferred embodiment, the fixing frame is fixedly mounted on one side of the bottom plate, and the position between the driving roller and the pressing roller corresponds to the position of one side of the discharge chute.

[0012] In a preferred embodiment, the positioning device includes a fixed table, a fixing plate is fixedly installed at the bottom end of the fixed table, positioning rails are fixedly installed on both sides of the bottom surface of the fixed table, a sliding rod is movably sleeved on the outer surface of the positioning rail, fixed racks are fixedly installed on both sides of the sliding rod, movable cylinders are fixedly installed on both sides inside the fixing plate, a connecting plate is fixedly installed at one end of the sliding rod, and one side of the movable cylinder is fixedly connected to the connecting plate.

[0013] In a preferred embodiment, two rotating shafts are rotatably installed on both sides inside the fixed table, rotating wheels are fixedly sleeved at the bottom of the two rotating shafts, the outer surface of the rotating wheel meshes with one side of the fixed rack, a support rod is fixedly sleeved on the outer surface of the upper end of the rotating shaft, and a positioning wheel is rotatably installed at one end of the support rod away from the rotating shaft.

[0014] Technical effects and advantages of the present invention:

[0015] 1. By setting the height of the discharge chute corresponding to the thickness of the inner cover material plate, the device can only discharge one inner cover material plate at a time, avoiding mutual adsorption of multiple materials, resulting in the failure of the suction cup of the automatic feeding device to adsorb and affecting the feeding effect of the automatic feeding device.

[0016] 2. After the blanking assembly of the present invention pushes out the inner cover material plate, it enters the inside of the pressing roller and the driving roller. Through the extrusion between the driving roller and the pressing roller, the inner cover material plate is flattened, avoiding the stacking of multiple inner cover material plates, resulting in the deformation of the bottom inner cover material plate, making the inner cover material plate flat before feeding, and improving the stamping effect of the inner cover of the rice cooker.

[0017] 3. The positioning wheel of the present invention squeezes the inner cover material plate at four places, positioning the inner cover material plate on the top of the fixed table, so that the position where the mechanical automatic feeding device adsorbs the inner cover material plate each time is the same, and the inner cover material plate can be accurately fed into the inside of the stamping device, automatically positioned, and improving the stamping accuracy of the device. Brief Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the structure of the storage device of the present invention.

[0020] Figure 3 It is a schematic diagram of the internal structure of the blanking pipe of the present invention.

[0021] Figure 4 It is a schematic diagram of the sectional structure of the blanking assembly of the present invention.

[0022] Figure 5 It is a schematic diagram of the structure of the flattening device of the present invention.

[0023] Figure 6 Schematic top view of the positioning device of the present invention.

[0024] Figure 7 Schematic bottom view of the positioning device of the present invention.

[0025] Reference numerals: 1, blanking component; 2, material storage device; 3, flattening device; 4, positioning device; 5, inner cover material plate; 11, bottom plate; 12, support feet; 13, blanking cylinder; 14, telescopic rod; 15, connecting frame; 16, push rod; 17, discharge chute; 21, blanking base; 22, limiting rod; 23, blanking port; 24, blanking pipe; 25, movable groove; 26, support frame; 27, rotating ring; 28, arc-shaped rack; 29, rotating rod; 210, fixed shaft; 211, rotating block; 212, closing plate; 213, fixed gear; 31, fixed frame; 32, rotating motor; 33, driving roller; 34, extrusion spring; 35, movable block; 36, pressing roller; 41, fixed table; 42, rotating shaft; 43, support rod; 44, positioning wheel; 45, fixing plate; 46, movable cylinder; 47, positioning track; 48, sliding rod; 49, fixed rack; 410, rotating wheel; 411, connecting plate. Detailed implementation manners

[0026] 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] First embodiment

[0028] As Figures 1 to 4 In an embodiment of the present invention, by rotating the rotating rod 29, a plurality of inner cover material plates 5 inside the limiting rod 22 are discharged from the inside of the blanking port 23, and through the expansion and contraction of the support feet 12, the inner cover material plates 5 inside the discharge chute 17 are pushed through the push rod 16. By setting the height of the discharge chute 17 to correspond to the thickness of the inner cover material plate 5, the device can only discharge one inner cover material plate 5 at a time, avoiding the mutual adsorption of multiple materials, resulting in the adsorption failure of the suction cup of the automatic feeding device and affecting the feeding effect of the automatic feeding device.

[0029] An automatic feeding device for stamping the inner cover of an electric rice cooker includes a blanking component 1. A material storage device 2 is fixedly installed on the top of the blanking component 1. A plurality of inner cover material plates 5 are placed inside the material storage device 2. A flattening device 3 is fixedly installed on one side of the blanking component 1. A positioning device 4 is fixedly installed on one side of the flattening device 3;

[0030] As Figure 4 shown in the figure, the blanking assembly 1 includes a bottom plate 11. Support feet 12 are fixedly installed on both sides of the bottom of the bottom plate 11. Blanking cylinders 13 are fixedly installed at both ends of one side of the bottom of the bottom plate 11. A telescopic rod 14 is arranged on one side of the blanking cylinder 13. A connecting frame 15 is fixedly installed on one side of the telescopic rod 14. A push rod 16 is fixedly installed on one side of the connecting frame 15. The top of the bottom plate 11 is fixedly connected to the material storage device 2. The push rod 16 is slidably installed between the bottom plate 11 and the material storage device 2.

[0031] Among them, the material storage device 2 includes a blanking base 21. Four limiting rods 22 are fixedly installed on the top of the blanking base 21. A blanking port 23 is formed inside the blanking base 21. The limiting rods 22 are movably sleeved on the outer surface of the inner cover material plate 5. The inner cover material plate 5 is movably sleeved inside the blanking port 23. A blanking pipe 24 is fixedly installed inside the blanking base 21.

[0032] Among them, an activity groove 25 is formed on one side of the blanking pipe 24. A support frame 26 is fixedly installed inside the blanking base 21. A rotating ring 27 is rotatably installed on the top of the support frame 26. Four arc-shaped racks 28 are fixedly installed on the inner wall of the rotating ring 27. A fixed shaft 210 is fixedly installed on one side of the arc-shaped rack 28 inside the blanking pipe 24. A rotating block 211 is rotatably installed on the outer surface of the fixed shaft 210. A fixed gear 213 is fixedly sleeved on the upper end of the rotating block 211. A closing plate 212 is fixedly sleeved on the lower end of the rotating block 211. The closing plate 212 is rotatably installed inside the blanking pipe 24. The closing plate 212 is rotatably installed below the support frame 26. The closing plate 212 is rotatably installed inside the blanking port 23. A rotating rod 29 is fixedly installed on one side of the rotating ring 27. The rotating rod 29 is rotatably installed inside the activity groove 25.

[0033] The support frame 26 is fixedly installed inside the blanking pipe 24 and limits the rotating ring 27. By rotating the rotating rod 29, the rotating ring 27 will rotate inside the support frame 26, the arc-shaped rack 28 moves, causing the fixed gear 213 and the rotating block 211 to rotate, and further causing the closing plates 212 to approach each other, opening and closing the blanking port 23, and further enabling the inner cover material plate 5 inside the limiting rods 22 to be discharged from inside the blanking port 23.

[0034] As Figure 4 shown in the figure, a discharge groove 17 is formed between the blanking base 21 and the bottom plate 11. The push rod 16 is slidably installed inside the discharge groove 17. The height of the discharge groove 17 corresponds to the thickness of the inner cover material plate 5.

[0035] Since the height of the discharge chute 17 corresponds to the thickness of the inner cover material plate 5, the inner cover material plate 5 is discharged from the bottom of the blanking port 23. Only one piece can be discharged at a time, and through the push of the push rod 16, the inner cover material plate 5 is pushed out from the inside of the discharge chute 17.

[0036] Second Embodiment

[0037] As Figures 1 to 5 In an embodiment of the present invention, after the blanking assembly 1 pushes out the inner cover material plate 5, it enters the inside of the pressing roller 36 and the driving roller 33. Through the extrusion between the driving roller 33 and the pressing roller 36, the inner cover material plate 5 is flattened, avoiding the stacking of multiple inner cover material plates 5, which may cause the deformation of the inner cover material plate 5 at the bottom, making the inner cover material plate 5 flat before feeding, and improving the stamping effect of the inner cover of the rice cooker.

[0038] In the second embodiment, compared with the first embodiment, the further optimization lies in that the flattening device 3 includes a fixed frame 31. A limiting groove is opened at the upper end of the fixed frame 31. A movable block 35 is slidably installed inside the limiting groove. A pressing roller 36 is rotatably installed inside the movable block 35. A compression spring 34 is arranged at the upper end of the limiting groove. The bottom of the compression spring 34 is fixedly installed on the top of the movable block 35. A rotating motor 32 is fixedly installed on one side of the lower end of the fixed frame 31. A driving roller 33 is fixedly installed on one side of the rotating motor 32. The driving roller 33 is rotatably installed below the pressing roller 36.

[0039] Among them, the fixed frame 31 is fixedly installed on one side of the bottom plate 11. The position between the driving roller 33 and the pressing roller 36 corresponds to the position on one side of the discharge chute 17.

[0040] Third Embodiment

[0041] As Figures 1 to 7 In an embodiment of the present invention, when the inner cover material plate 5 is flattened by the flattening device 3 and enters the top of the fixed table 41, at this time, the movable cylinder 46 extends, causing the sliding rods 48 at both ends to move away from each other. The fixed rack 49 moves, the rotating wheel 410 rotates, the rotating shaft 42 rotates inside the fixed table 41, and the support rods 43 at both ends of the fixed table 41 rotate, so that the positioning wheels 44 squeeze the four places of the inner cover material plate 5, positioning the inner cover material plate 5 on the top of the fixed table 41, making the position where the mechanical automatic feeding device adsorbs the inner cover material plate 5 the same each time. The inner cover material plate 5 can be accurately fed into the inside of the stamping device, automatically positioned, and the stamping accuracy of the device is improved.

[0042] In the third embodiment, compared with the second embodiment, the further optimization lies in that the positioning device 4 includes a fixed table 41. A fixing plate 45 is fixedly installed at the bottom end of the fixed table 41. Positioning rails 47 are fixedly installed on both sides of the bottom surface of the fixed table 41. A sliding rod 48 is movably sleeved on the outer surface of the positioning rail 47. Fixed racks 49 are fixedly installed on both sides of the sliding rod 48. Moving cylinders 46 are fixedly installed on both sides inside the fixing plate 45. A connecting plate 411 is fixedly installed at one end of the sliding rod 48. One side of the moving cylinder 46 is fixedly connected to the connecting plate 411.

[0043] Wherein, two rotating shafts 42 are rotatably installed on both sides inside the fixed table 41. Rotating wheels 410 are fixedly sleeved at the bottoms of the two rotating shafts 42. The outer surface of the rotating wheel 410 meshes with one side of the fixed rack 49. A support rod 43 is fixedly sleeved on the outer surface of the upper end of the rotating shaft 42. A positioning wheel 44 is rotatably installed at one end of the support rod 43 away from the rotating shaft 42.

[0044] The support rod 43 rotates around the rotating shaft 42. The positioning wheels 44 approach each other from the four sides of the inner cover material plate 5, squeeze and position the inner cover material plate 5, so that the inner cover material plate 5 accurately stays on the top of the fixed table 41.

[0045] The working principle of the present invention: When in use, by rotating the rotating rod 29, the rotating ring 27 rotates inside the support frame 26. Through the meshing of the arc rack 28 and the fixed gear 213, the rotating block 211 rotates, and the closing plate 212 rotates into the inside of the blanking pipe 24, and the blanking port 23 unfolds. The inner cover material plate 5 falls from the inside of the blanking port 23 due to gravity to the top of the bottom plate 11. The blanking cylinder 13 controls the telescopic rod 14 to contract, and the connecting frame 15 makes the pushing rod 16 push the inner cover material plate 5 inside the discharge chute 17 to move, so that the inner cover material plate 5 is discharged from the inside of the discharge chute 17;

[0046] The inner cover material plate 5 is discharged from the inside of the discharge chute 17 and enters between the driving roller 33 and the pressing roller 36. The rotating motor 32 is started to drive the driving roller 33 and the pressing roller 36 to rotate, and the inner cover material plate 5 is flattened;

[0047] The flattened inner cover material plate 5 enters the top of the fixed table 41. Subsequently, the moving cylinder 46 contracts, and the sliding rod 48 moves to both sides on the outer surface of the positioning rail 47. Through the meshing of the fixed rack 49 and the rotating wheel 410, the rotating wheel 410 drives the two rotating shafts 42 on both sides of the sliding rod 48 to move towards each other, so that the two support rods 43 at both ends rotate, pushing the positioning wheels 44 to approach each other, limiting the inner cover material plate 5, so that the position where the mechanical automatic feeding device adsorbs the inner cover material plate 5 each time is the same, and the inner cover material plate 5 can be accurately fed into the inside of the stamping device.

[0048] Finally, the following points should be noted: In the accompanying drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are involved. For other structures, reference may be made to the general design. Without conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0049] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. An automatic feeding device for punching inner cover of an electric rice cooker, comprising a feeding assembly (1), characterized in that: A material storage device (2) is fixedly mounted on the top of the material discharge assembly (1), a plurality of inner cover material plates (5) are placed inside the material storage device (2), a flattening device (3) is fixedly mounted on one side of the material discharge assembly (1), and a positioning device (4) is fixedly mounted on one side of the flattening device (3); The material unloading assembly (1) comprises a bottom plate (11), support feet (12) are fixedly mounted on both sides of the bottom of the bottom plate (11), a material unloading cylinder (13) is fixedly mounted on both ends of one side of the bottom of the bottom plate (11), a telescopic rod (14) is provided on one side of the material unloading cylinder (13), a connecting frame (15) is fixedly mounted on one side of the telescopic rod (14), a pushing rod (16) is fixedly mounted on one side of the connecting frame (15), the top of the bottom plate (11) is fixedly connected to the material storage device (2), and the pushing rod (16) is slidably mounted between the bottom plate (11) and the material storage device (2).

2. The automatic feeding device for punching the inner cover of an electric rice cooker according to claim 1, characterized in that: The material storage device (2) comprises a material discharge base (21), four limiting rods (22) are fixedly installed on the top of the material discharge base (21), a material discharge opening (23) is opened inside the material discharge base (21), the limiting rods (22) are movably sleeved on the outer surface of the inner cover material plate (5), the inner cover material plate (5) is movably sleeved inside the material discharge opening (23), and a material discharge pipe (24) is fixedly installed inside the material discharge base (21).

3. The automatic feeding device for stamping the inner cover of an electric rice cooker according to claim 2, characterized in that: A movable groove (25) is provided on one side of the material discharge pipe (24); a support frame (26) is fixedly installed inside the material discharge base (21); a rotating ring (27) is rotatably installed on the top of the support frame (26); arc-shaped racks (28) are fixedly installed at four sides of the inner wall of the rotating ring (27); a fixed shaft (210) is fixedly installed on one side of the arc-shaped rack (28) inside the material discharge pipe (24); a rotating block (211) is rotatably installed on the outer surface of the fixed shaft (210); and the rotating block (211) is rotatably installed on the outer surface of the fixed shaft (210). The upper end of the rotating block (211) is fixedly sleeved with a fixed gear (213), the lower end of the rotating block (211) is fixedly sleeved with a closing plate (212), the closing plate (212) is rotatably mounted inside the discharge pipe (24), the closing plate (212) is rotatably mounted below the support frame (26), the closing plate (212) is rotatably mounted inside the discharge port (23), a rotating rod (29) is fixedly mounted on one side of the rotating ring (27), and the rotating rod (29) is rotatably mounted inside the movable groove (25).

4. The automatic feeding device for punching the inner cover of an electric rice cooker according to claim 3, characterized in that: A discharge trough (17) is formed between the unloading base (21) and the bottom plate (11), and the push rod (16) is slidably installed inside the discharge trough (17). The height of the discharge trough (17) corresponds to the thickness of the inner cover material plate (5).

5. The automatic feeding device for punching the inner cover of an electric rice cooker according to claim 4, characterized in that: The flattening device (3) comprises a fixed frame (31), the upper end of the fixed frame (31) is provided with a limiting groove, a movable block (35) is slidably installed inside the limiting groove, a pressing roller (36) is rotatably installed inside the movable block (35), an extrusion spring (34) is provided at the upper end of the limiting groove, the bottom of the extrusion spring (34) is fixedly installed on the top of the movable block (35), a rotating motor (32) is fixedly installed on one side of the lower end of the fixed frame (31), a driving roller (33) is fixedly installed on one side of the rotating motor (32), and the driving roller (33) is rotatably installed below the pressing roller (36).

6. The automatic feeding device for stamping the inner cover of an electric rice cooker according to claim 5, characterized in that: The fixing frame (31) is fixedly mounted on one side of the bottom plate (11), and the position between the driving roller (33) and the pressing roller (36) corresponds to the position on one side of the discharge trough (17).

7. The automatic feeding device for stamping the inner cover of an electric rice cooker according to claim 1, characterized in that: The positioning device (4) comprises a fixed platform (41), a fixed plate (45) is fixedly installed at the bottom end of the fixed platform (41), positioning rails (47) are fixedly installed on both sides of the bottom surface of the fixed platform (41), a sliding rod (48) is movably sleeved on the outer surface of the positioning rail (47), fixed racks (49) are fixedly installed on both sides of the sliding rod (48), and movable cylinders (46) are fixedly installed on both sides of the interior of the fixed plate (45), a connecting plate (411) is fixedly installed on one end of the sliding rod (48), and one side of the movable cylinder (46) is fixedly connected to the connecting plate (411).

8. The automatic feeding device for punching the inner cover of an electric rice cooker according to claim 7, characterized in that: Two rotating shafts (42) are rotatably mounted on both sides of the fixed platform (41), and rotating wheels (410) are fixedly sleeved at the bottoms of the two rotating shafts (42). The outer surface of the rotating wheel (410) is meshed with one side of the fixed rack (49), and a support rod (43) is fixedly sleeved on the outer surface of the upper end of the rotating shaft (42), and a positioning wheel (44) is rotatably mounted on one end of the support rod (43) away from the rotating shaft (42).

Images