Tinplate sheet pushing device for can making production line

Abstract

The utility model relates to a tin sheet pushing device for a can production line, which comprises a rack, two retainer plates, a magnet vacuum mechanism and a rotary iron pushing mechanism, and the two retainer plates are mounted on the rack side by side in the left-right direction and are arranged in the front-back direction; the iron attraction vacuum mechanism can attract and transfer tinplate pieces to the top faces of the rear portions of the two material supporting plates. The rotary iron pushing mechanism is arranged on the front side of the iron attraction vacuum mechanism and comprises a first supporting seat, a rotating shaft, a rotating shaft driving motor and at least one rotating part, and the rotating shaft is rotatably installed on the first supporting seat and is in the left-right direction; an output shaft of the rotating shaft driving motor is connected with the rotating shaft; the rotating component is fixedly installed on the rotating shaft, at least one pushing claw is arranged on the rotating component, and the pushing claw corresponds to the position between the two material supporting plates. According to the tin sheet pushing device, the tin sheets can be pushed one by one, surface damage to the tin sheets can be effectively reduced, and the tin sheet pushing device is beneficial to improving the welding quality of a tank body.

Description

TECHNICAL FIELD

[0001] The utility model relates to metal container manufacturing technical field, concretely relates to a tinplate pushing device for can making production line. BACKGROUND

[0002] Metal packaging containers are widely used in the food industry, among which tinplate cans become one of the mainstream packaging forms due to their good sealing performance and mechanical strength. In the can making process, the conveying and positioning of tinplate sheets are important links before welding.

[0003] In the traditional can making production line, a straight-line iron pushing mechanism is usually used to realize the push of tinplate sheets one by one. The straight-line iron pushing mechanism usually uses a cam to drive a pushing claw to complete the linear conveying of tinplate sheets. The pushing claw directly contacts the edge of the tinplate sheet, and pushes the tinplate sheet along a straight-line path into the welding area. However, with the continuous improvement of the speed of the can making production line, the traditional straight-line iron pushing mechanism has the following technical problems in high-speed operation: when the straight-line iron pushing mechanism pushes at high speed, the high relative linear speed between the pushing claw and the edge of the tinplate sheet to be welded is generated due to high-speed sliding contact, which is easy to produce scratches or indentations on the side of the tinplate sheet to be welded. These surface scratches or indentations not only damage the tin layer or chrome plating layer protection on the surface of the tinplate sheet, but also expose the base material. In the subsequent welding process, due to the uneven surface or the existence of micro defects, it is easy to cause virtual welding, missed welding and other phenomena in the weld area, which significantly reduces the sealing performance of the can body. Moreover, in the subsequent resistance welding process, when the tinplate sheet with surface scratches contacts the electrode wheel (usually made of copper alloy), the rough scratches will accelerate the wear of the electrode wheel, shortening its service life. SUMMARY

[0004] The technical problem to be solved by the utility model is to provide a tinplate pushing device for can making production line, which can realize the push of tinplate sheets one by one, effectively reduce the surface damage, and improve the welding quality of the can body. The technical scheme adopted is as follows:

[0005] A tin sheet pushing device for can-making production line, comprising a rack and two material supporting plates, the two material supporting plates are installed side by side on the rack and arranged along the front-rear direction; characterized in that: the tin sheet pushing device further comprises a magnet suction vacuum mechanism and a rotary iron pushing mechanism, the magnet suction vacuum mechanism is installed on the rack, the magnet suction vacuum mechanism can adsorb and transfer the tin sheet to the rear top surface of the two material supporting plates; the rotary iron pushing mechanism is arranged on the front side of the magnet suction vacuum mechanism, the rotary iron pushing mechanism comprises a first support seat, a rotating shaft, a rotating shaft driving motor and at least one rotating part, the first support seat is installed on the rack, the rotating shaft is rotatably installed on the first support seat and has a left-right running direction; the rotating shaft driving motor is installed on the first support seat, the output shaft of the rotating shaft driving motor is connected with the rotating shaft; the rotating part is fixedly installed on the rotating shaft and located on the lower side of the two material supporting plates, at least one pushing claw is arranged on the rotating part, and the pushing claw is corresponding in position with the two material supporting plates.

[0006] The front and the rear respectively refer to: along the pushing direction of the tin sheet, the first one is the front, and the last one is the rear.

[0007] The tin sheet pushing device can be applied to the welding machine (for example, the circular device of the metal can resistance welding can body welding machine) of the can-making production line. When working, the magnet suction vacuum mechanism is used to adsorb and transfer the tin sheet to the rear top surface of the two material supporting plates one by one; the rotary iron pushing mechanism is used to move the tin sheet on the two material supporting plates from front to rear and push the tin sheet one by one to the iron feeding shaft of the welding machine. The rotating shaft driving motor drives the rotating shaft and each pushing claw on the rotating part to rotate at a uniform rotary speed, every time, one pushing claw on the rotating part rotates to between the two material supporting plates and pushes the tin sheet on the two material supporting plates to move forward by a distance; before the next pushing claw reaches between the two material supporting plates, the magnet suction vacuum mechanism adsorbs and transfers the next tin sheet to the rear top surface of the two material supporting plates. Since the rotary iron pushing mechanism realizes the pushing of the tin sheet one by one in a rotary manner, the moving line distance of the pushing claw is shortened every time, and the linear speed of the pushing claw is reduced by 1 / 3, thereby the physical damage to the tin plating layer on the tin sheet can be greatly reduced, the integrity of the tin plating layer surface is protected, on the one hand, the phenomenon of virtual welding, missed welding and the like in the welding area in the subsequent welding process can be avoided, which is beneficial to improving the welding quality of the can body and significantly improving the sealing performance of the can body, on the other hand, the wear of the electrode wheel in the subsequent resistance welding process can be reduced, and the service life of the electrode wheel is improved.

[0008] As a preferred scheme of the utility model, a plurality of pushing claws are arranged on the rotating part along the outer periphery of the rotating part in a uniform manner. By adopting this structure, the pushing of the tin sheet by the rotary iron pushing mechanism is more orderly.

[0009] As a further preferred scheme of the utility model, the number of the rotating parts is two, both of which are installed on the rotating shaft and arranged side by side; the number of the pushing claws on both rotating parts is the same and the positions are one-to-one corresponding. With this structure, the advancing of the rotating pushing iron mechanism to the sheet iron is more stable.

[0010] As a preferred scheme of the utility model, the iron suction vacuum mechanism comprises a second support base, a guide pipeline, an eccentric wheel, an eccentric wheel driving mechanism for driving the eccentric wheel to rotate, a connecting rod, a movable rod, a suction disc base and at least one vacuum suction disc, the second support base is installed on the rack, the guide pipeline and the eccentric wheel driving mechanism are both installed on the second support base, the guide pipeline is upwardly extending, the middle part of the movable rod is installed in the guide pipeline in a lifting manner, the lower end of the connecting rod is hinged to the eccentric part of the eccentric wheel, and the upper end of the connecting rod is hinged to the lower end of the movable rod; the suction disc base is installed on the upper end of the movable rod, and the vacuum suction disc is installed on the suction disc base and between the two material supporting plates. When working, the eccentric wheel is driven by the eccentric wheel driving mechanism to rotate, the movable rod, the suction disc base and the vacuum suction disc thereon are driven by the connecting rod to ascend along the guide pipeline to the upper limit position (at this time, the suction port of the vacuum suction disc is located higher than the top surfaces of the two material supporting plates), the sheet iron is adsorbed by the suction force generated by the vacuum suction disc, and then is released after descending to the top surfaces of the rear part of the two material supporting plates (at this time, the suction port of the vacuum suction disc is located flush with or slightly lower than the top surfaces of the two material supporting plates), so that the sheet iron is adsorbed and transferred to the top surfaces of the rear part of the two material supporting plates one by one.

[0011] As a further preferred scheme of the utility model, the eccentric wheel driving mechanism comprises an eccentric wheel shaft and an eccentric wheel driving motor, the eccentric wheel shaft is rotatably installed on the second support base, the eccentric wheel driving motor is installed on the second support base, and the output shaft of the eccentric wheel driving motor is in transmission connection with the eccentric wheel shaft; the eccentric wheel is fixedly installed on the eccentric wheel shaft. When working, the eccentric wheel shaft is continuously rotated by the eccentric wheel driving motor to drive the eccentric wheel to rotate eccentrically around the eccentric wheel shaft,

[0012] As a further preferred scheme of the utility model, the vacuum mechanism of the suction iron further comprises a vacuumizing device, the vacuumizing device is installed on the frame; the upper portion of the movable rod has an air passage pipe going up and down, the inner cavities of each vacuum chuck are communicated with the upper end of the air passage pipe; the pipe wall of the air passage pipe is provided with a vacuum air inlet and a vacuum breaking air inlet, the vacuum air inlet is communicated with the air outlet of the vacuumizing device, the position of the vacuum breaking air inlet is lower than the vacuum air inlet; when the suction port of the vacuum chuck is at the position higher than the top surfaces of the two material supporting plates, the vacuum air inlet is communicated with the air passage pipe, the vacuum breaking air inlet is not communicated with the air passage pipe; when the suction port of the vacuum chuck is at the position lower than the top surfaces of the two material supporting plates, the vacuum air inlet and the vacuum breaking air inlet are both communicated with the air passage pipe. When working, the eccentric wheel is driven to rotate by the eccentric wheel driving mechanism, the movable rod, the chuck seat and the vacuum chuck thereon are first driven to ascend to the upper limit position along the guide pipe by the connecting rod, at this time, the vacuum air inlet is communicated with the air passage pipe, the vacuum breaking air inlet is not communicated with the air passage pipe, the vacuumizing device is vacuumized through the vacuum air inlet, negative pressure is formed at the suction port of the vacuum chuck through the air passage pipe, the tinplate sheet is adsorbed, the movable rod, the chuck seat and the vacuum chuck are further driven to descend along the guide pipe, the tinplate sheet is moved to the top surface of the rear portion of the two material supporting plates; when the suction port of the vacuum chuck is at the position lower than the top surfaces of the two material supporting plates, the vacuum air inlet and the vacuum breaking air inlet are both communicated with the air passage pipe, external air can enter the air passage pipe through the vacuum breaking air inlet to break the vacuum, so that the vacuum chuck releases the tinplate sheet.

[0013] As a further preferred scheme of the utility model, the first support seat is installed on the frame through a first front and back position adjusting mechanism, the second support seat is installed on the frame through a second front and back position adjusting mechanism. When the tank type needs to be replaced, the position of the rotary tin pushing mechanism in the front and back direction can be adjusted through the first front and back position adjusting mechanism, the position of the vacuum mechanism of the suction iron in the front and back direction can be adjusted through the second front and back position adjusting mechanism, so as to adjust the relative position of the rotary tin pushing mechanism and the vacuum mechanism of the suction iron.

[0014] As a further preferred scheme of the utility model, the first front and back position adjusting mechanism includes first sliding groove, first sliding block, first adjusting screw rod and first handle, first sliding groove is installed on the rack and is front and back trend, first sliding block is installed in first sliding groove and is slidably connected with first sliding groove, first adjusting screw rod is rotatably installed on the rack and is parallel with first sliding groove, first sliding block is equipped with first screw hole that is engaged with first adjusting screw rod, first handle is fixedly installed on first adjusting screw rod, first support base is connected with first sliding block.

[0015] As a further preferred scheme of the utility model, the first front and back position adjusting mechanism includes first sliding groove, first sliding block, first adjusting screw rod and first handle, first sliding groove is installed on the rack and is front and back trend, first sliding block is installed in first sliding groove and is slidably connected with first sliding groove, first adjusting screw rod is rotatably installed on the rack and is parallel with first sliding groove, first sliding block is equipped with first screw hole that is engaged with first adjusting screw rod, first handle is fixedly installed on first adjusting screw rod, first support base is connected with first sliding block.

[0016] As a further preferred scheme of the utility model, the second front and back position adjusting mechanism includes second sliding groove, second sliding block, second adjusting screw rod and second handle, second sliding groove is installed on the rack and is front and back trend, second sliding block is installed in second sliding groove and is slidably connected with second sliding groove, second adjusting screw rod is rotatably installed on the rack and is parallel with second sliding groove, second sliding block is equipped with second screw hole that is engaged with second adjusting screw rod, second handle is fixedly installed on second adjusting screw rod, second support base is connected with second sliding block.

[0017] As a further preferred scheme of the utility model, the second front and back position adjusting mechanism includes second sliding groove, second sliding block, second adjusting screw rod and second handle, second sliding groove is installed on the rack and is front and back trend, second sliding block is installed in second sliding groove and is slidably connected with second sliding groove, second adjusting screw rod is rotatably installed on the rack and is parallel with second sliding groove, second sliding block is equipped with second screw hole that is engaged with second adjusting screw rod, second handle is fixedly installed on second adjusting screw rod, second support base is connected with second sliding block.

[0018] Compared with the prior art, the utility model has the following advantages:

[0019] (1) The rotary iron pushing mechanism in the tinplate pushing device realizes the pushing of tinplate in a rotary way. The moving line distance of the pushing claw is shortened and the linear velocity of the pushing claw is reduced by 1 / 3 in each iron pushing process, so that the physical damage to the tin coating on the tinplate can be greatly reduced, the integrity of the tin coating surface is protected, the phenomenon of virtual welding and missing welding in the welding process can be avoided, the welding quality of the tank body is improved, the sealing performance of the tank body is improved, the qualified rate of the finished product is improved, and the service life of the electrode wheel is prolonged.

[0020] (2) The iron suction vacuum mechanism in the tinplate pushing device adopts a structure similar to a crank slider, drives the vacuum suction disc to move up and down repeatedly, and automatically switches to vacuum or broken vacuum during the up and down movement, realizes the adsorption and transfer of tinplate to the top surface of the rear of the two material supporting plates, and cooperates with the rotary iron pushing mechanism to push the tinplate, so that the working efficiency is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structure schematic view of the preferred embodiment of the utility model.

[0022] Figure 2 is Figure 1 the rear view.

[0023] Figure 3 is Figure 1 the perspective view (wherein the tinplate is not drawn). DETAILED DESCRIPTION

[0024] As Figures 1-3As shown, the tin sheet pushing device for the can production line comprises a rack 1, two material supporting plates 2, a suction iron vacuum mechanism 3 and a rotary iron pushing mechanism 4. The two material supporting plates 2 are installed side by side on the rack 1 and arranged in the front-rear direction. The suction iron vacuum mechanism 3 comprises a second support base 31, a guide pipe 32, an eccentric shaft 33, an eccentric wheel driving motor 34, an eccentric wheel 35, a connecting rod 36, a movable rod 37, a suction disc base 38 and a plurality of vacuum suction discs 39. The second support base 31 is installed on the rack 1. The eccentric shaft 33 is rotatably installed on the second support base 31 and arranged in the left-right direction. The eccentric wheel driving motor 34 and the guide pipe 32 are both installed on the second support base 31. The output shaft of the eccentric wheel driving motor 34 is in transmission connection with the eccentric shaft 33. The guide pipe 32 is arranged in the up-down direction. The middle part of the movable rod 37 is liftably installed in the guide pipe 32. The eccentric wheel 35 is fixedly installed on the eccentric shaft 33. The lower end of the connecting rod 36 is hingedly connected with the eccentric part of the eccentric wheel 35. The upper end of the connecting rod 36 is hingedly connected with the lower end of the movable rod 37. The suction disc base 38 is installed on the upper end of the movable rod 37. Each vacuum suction disc 39 is installed on the suction disc base 38 and arranged between the two material supporting plates 2. The rotary iron pushing mechanism 4 is arranged at the front side of the suction iron vacuum mechanism 3. The rotary iron pushing mechanism 4 comprises a first support base 41, a rotating shaft 42, a rotating shaft driving motor 43 and at least one rotating part 44. The first support base 41 is installed on the rack 1. The rotating shaft 42 is rotatably installed on the first support base 41 and arranged in the left-right direction. The rotating shaft driving motor 43 is installed on the first support base 41. The output shaft of the rotating shaft driving motor 43 is connected with the rotating shaft 42. The rotating part 44 is fixedly installed on the rotating shaft 42 and arranged at the lower side of the two material supporting plates 2. At least one pushing claw 45 is arranged on the rotating part 44 and corresponding to the position between the two material supporting plates 2.

[0025] In the embodiment, the number of the rotating parts 44 is two. The two rotating parts 44 are both installed on the rotating shaft 42 and arranged side by side in the left-right direction. A plurality of pushing claws 45 are arranged on each rotating part 44 and uniformly arranged along the outer periphery of the rotating part 44. The number of the pushing claws 45 on the two rotating parts 44 is the same and corresponding to each other. With the structure, the pushing of the tin sheet 60 by the rotary iron pushing mechanism 4 is more orderly and stable.

[0026] In the embodiment, the iron suction vacuum mechanism 3 further comprises a vacuum pump (not shown in the figure) installed on the frame 1; the upper part of the movable rod 37 is internally provided with an up-and-down air passage 370, and the inner cavities of the vacuum suction cups 39 are in communication with the upper end of the air passage 370; the pipe wall of the guide passage 32 is provided with a vacuum air inlet 321 and a vacuum breaking air inlet 322, the vacuum air inlet 321 is in communication with the air outlet of the vacuum pump, and the vacuum breaking air inlet 322 is located lower than the vacuum air inlet 321; when the suction port of the vacuum suction cup 39 is located higher than the top surface of the two material supporting plates 2, the vacuum air inlet 321 is in communication with the air passage 370, and the vacuum breaking air inlet 322 is not in communication with the air passage 370; when the suction port of the vacuum suction cup 39 is located lower than the top surface of the two material supporting plates 2, the vacuum air inlet 321 and the vacuum breaking air inlet 322 are both in communication with the air passage 370. In operation, the eccentric wheel 35 is driven to rotate by the eccentric wheel driving mechanism, and the movable rod 37, the suction cup seat 38 and the vacuum suction cup 39 thereon are first driven to ascend along the guide passage 32 to the upper limit position, at this time, the vacuum air inlet 321 is in communication with the air passage 370, and the vacuum breaking air inlet 322 is not in communication with the air passage 370, the vacuum pump draws vacuum through the vacuum air inlet 321, and negative pressure is formed at the suction port of the vacuum suction cup 39 through the air passage 370, so as to realize the suction of the tinplate sheet 60, and then the movable rod 37, the suction cup seat 38 and the vacuum suction cup 39 are driven to descend along the guide passage 32, so as to move the tinplate sheet 60 to the top surface of the rear part of the two material supporting plates 2; when the suction port of the vacuum suction cup 39 is located lower than the top surface of the two material supporting plates 2, the vacuum air inlet 321 and the vacuum breaking air inlet 322 are both in communication with the air passage 370, so as to realize vacuum breaking, and release the tinplate sheet 60 from the vacuum suction cup 39.

[0027] In the embodiment, the first support base 41 is installed on the frame 1 through the first front-rear position adjusting mechanism 5, the first front-rear position adjusting mechanism 5 comprises two first sliding grooves 51, two first sliding blocks 52, a first adjusting screw 53, a first handle 54, a first scale 55 and a first mark block 56, the first sliding grooves 51 are installed on the frame 1 and are front-rear oriented, the two first sliding blocks 52 are respectively installed in the corresponding first sliding grooves 51 and are in sliding fit with the first sliding grooves 51, the first adjusting screw 53 is rotatably installed on the frame 1 and is parallel to the first sliding grooves 51, the first sliding block 52 is provided with the first screw hole engaged with the first adjusting screw 53, and the first handle 54 is fixedly installed on the first adjusting screw 53; the first support base 41 is installed on the two first sliding blocks 52; the first scale 55 is installed on the frame 1 and is arranged in the front-rear direction, and the first mark block 56 is installed on the first sliding block 52 and corresponds to the scale position on the first scale 55; the second support base 31 is installed on the frame 1 through the second front-rear position adjusting mechanism 6, the second front-rear position adjusting mechanism 6 comprises a second sliding groove 61, second sliding blocks (not shown in the figure), a second adjusting screw 63, a second handle 64, a second scale 65 and a second mark block (not shown in the figure), the second sliding groove 61 is installed on the frame 1 and is front-rear oriented, the two second sliding blocks are respectively installed in the corresponding second sliding grooves 61 and are in sliding fit with the second sliding grooves 61, the second adjusting screw 63 is rotatably installed on the frame 1 and is parallel to the second sliding grooves 61, the second sliding block is provided with the second screw hole engaged with the second adjusting screw 63, and the second handle 64 is fixedly installed on the second adjusting screw 63; the second support base 31 is installed on the two second sliding blocks; the second scale 65 is installed on the frame 1 and is arranged in the front-rear direction, and the second mark block is installed on the second sliding block and corresponds to the scale position on the second scale 65.

[0028] The working principle of the tin sheet pushing device is briefly described as follows:

[0029] The tin sheet pushing device is installed on the circular forming device of the metal can resistance welding can body welding machine.

[0030] When working, the iron suction vacuum mechanism 3 is used to adsorb and transfer the tinplate sheet 60 to the top surface of the rear of the two material supporting plates 2: the eccentric shaft 33 is continuously rotated by the eccentric wheel driving motor 34, driving the eccentric wheel 35 to rotate eccentrically around the eccentric shaft 33, driving the movable rod 37 and the suction disc seat 38 and the vacuum suction disc 39 thereon to rise to the upper limit position along the guide pipeline 32 (at this time, the suction port position of the vacuum suction disc 39 is higher than the position of the top surface of the two material supporting plates 2), and the tinplate sheet 60 is adsorbed by the suction force generated by the vacuum suction disc 39, and then is released after being lowered to the top surface of the rear of the two material supporting plates 2 (at this time, the suction port position of the vacuum suction disc 39 is flush with or slightly lower than the position of the top surface of the two material supporting plates 2), thereby realizing the adsorption and transfer of the tinplate sheet 60 to the top surface of the rear of the two material supporting plates 2 (at this time, the tinplate sheet 60 is placed on the top surface of the rear of the two material supporting plates 2). The rotary iron pushing mechanism 4 is used to move the tinplate sheet 60 from front to rear on the two material supporting plates 2 and push the tinplate sheet 60 to the iron feeding shaft of the welding machine. The rotation shaft driving motor 43 drives the rotation shaft 42 and each pushing claw 45 on the rotating part 44 to rotate at a uniform rotary speed, and every time a pushing claw 45 on the rotating part 44 rotates to between the two material supporting plates 2, it pushes the tinplate sheet 60 on the two material supporting plates 2 to move forward by a distance; before the next pushing claw 45 reaches between the two material supporting plates 2, the iron suction vacuum mechanism 3 adsorbs and transfers the next tinplate sheet 60 to the top surface of the rear of the two material supporting plates 2.

[0031] When it is necessary to replace the can type, the position of the rotary iron pushing mechanism 4 in the front-rear direction can be adjusted by the first front-rear position adjusting mechanism 5: by rotating the first handle 54 to drive the first adjusting screw 53 to rotate, the first adjusting screw 53 and the first screw hole on the first sliding block 52 are engaged, driving the first sliding block 52 and the first supporting seat 41 to translate forward or backward along the first sliding groove 51 by a certain distance (during the adjustment process, the position of the first supporting seat 41 can be quickly and accurately read by reading the mark position of the first mark block 56 on the scale of the first scale 55); the position of the iron suction vacuum mechanism 3 in the front-rear direction can be adjusted by the second front-rear position adjusting mechanism 6: by rotating the second handle 64 to drive the second adjusting screw 63 to rotate, the second adjusting screw 63 and the second screw hole on the second sliding block are engaged, driving the second sliding block and the second supporting seat 31 to translate forward or backward along the second sliding groove 61 by a certain distance (during the adjustment process, the position of the second supporting seat 31 can be quickly and accurately read by reading the mark position of the second mark block on the scale of the second scale 65), thereby adjusting the relative position of the rotary iron pushing mechanism 4 and the iron suction vacuum mechanism 3.

[0032] In addition, it should be noted that the specific embodiments described in the specification, the name of each part, etc. can be different, and any equivalent or simple change made in accordance with the structure, features and principles of the utility model patent concept is included in the protection scope of the utility model patent. The skilled in the art to which the present application belongs can make various modifications or supplements or use similar ways to replace the described specific embodiments, as long as it does not deviate from the structure of the utility model or beyond the scope defined in the claims, which shall belong to the protection scope of the utility model.

Claims

1. A tinplate feeding device for a can-making production line, comprising a frame and two material support plates, the two material support plates being installed side-by-side on the frame and arranged along the front-back direction; characterized in that: The tinplate sheet pushing device further includes a vacuum suction mechanism and a rotary pushing mechanism. The vacuum suction mechanism is mounted on the frame and can attract and transfer the tinplate sheet to the rear top surface of the two material support plates. The rotary pushing mechanism is located in front of the vacuum suction mechanism and includes a first support base, a rotating shaft, a rotating shaft drive motor, and at least one rotating component. The first support base is mounted on the frame, and the rotating shaft is rotatably mounted on the first support base and runs left and right. The rotating shaft drive motor is mounted on the first support base, and the output shaft of the rotating shaft drive motor is connected to the rotating shaft. The rotating component is fixedly mounted on the rotating shaft and located below the two material support plates. The rotating component is provided with at least one pusher claw, and the pusher claw is positioned corresponding to the two material support plates.

2. The tinplate sheet pushing device for a can-making production line according to claim 1, characterized in that: The rotating component is provided with a plurality of push claws evenly arranged along its outer circumference; the number of the rotating components is set to two, both of which are mounted on the rotating shaft and arranged side by side; the number of push claws on the two rotating components is the same and their positions correspond one-to-one.

3. The tinplate sheet pushing device for a can-making production line according to claim 1, characterized in that: The magnetic vacuum mechanism includes a second support base, a guide pipe, an eccentric wheel, an eccentric wheel drive mechanism for driving the eccentric wheel to rotate, a connecting rod, a movable rod, a suction cup base, and at least one vacuum suction cup. The second support base is mounted on the frame. The guide pipe and the eccentric wheel drive mechanism are both mounted on the second support base. The guide pipe runs vertically. The middle part of the movable rod is vertically mounted in the guide pipe. The lower end of the connecting rod is hinged to the eccentric part of the eccentric wheel, and the upper end of the connecting rod is hinged to the lower end of the movable rod. The suction cup base is mounted on the upper end of the movable rod, and the vacuum suction cup is mounted on the suction cup base and positioned between the two material support plates.

4. The tinplate sheet pushing device for a can-making production line according to claim 3, characterized in that: The eccentric wheel drive mechanism includes an eccentric wheel shaft and an eccentric wheel drive motor. The eccentric wheel shaft is rotatably mounted on the second support base, and the eccentric wheel drive motor is mounted on the second support base. The output shaft of the eccentric wheel drive motor is connected to the eccentric wheel shaft for transmission. The eccentric wheel is fixedly mounted on the eccentric wheel shaft.

5. The tinplate sheet pushing device for a can-making production line according to claim 3, characterized in that: The magnetic vacuum mechanism also includes a vacuum pumping device, which is mounted on the frame. The upper part of the movable rod has a vertically oriented ventilation pipe, and the inner cavity of each vacuum suction cup is connected to the upper end of the ventilation pipe. The ventilation pipe wall is provided with a vacuum inlet and a vacuum-breaking inlet. The vacuum inlet is connected to the suction port of the vacuum pumping device, and the vacuum-breaking inlet is positioned lower than the vacuum inlet. When the suction port of the vacuum suction cup is above the top surface of the two material support plates, the vacuum inlet is connected to the ventilation pipe, while the vacuum-breaking inlet is not connected. When the suction port of the vacuum suction cup is below the top surface of the two material support plates, both the vacuum inlet and the vacuum-breaking inlet are connected to the ventilation pipe.

6. The tinplate sheet pushing device for a can-making production line according to claim 3, characterized in that: The first support base is mounted on the frame via a first front-to-back position adjustment mechanism, and the second support base is mounted on the frame via a second front-to-back position adjustment mechanism.

7. The tinplate sheet pushing device for a can-making production line according to claim 6, characterized in that: The first front-to-back position adjustment mechanism includes a first slide groove, a first slider, a first adjusting screw, and a first handle. The first slide groove is mounted on the frame and runs in a front-to-back direction. The first slider is mounted in the first slide groove and slides in cooperation with the first slide groove. The first adjusting screw is rotatably mounted on the frame and parallel to the first slide groove. The first slider has a first screw hole that meshes with the first adjusting screw. The first handle is fixedly mounted on the first adjusting screw. The first support base is connected to the first slider.

8. The tinplate sheet pushing device for a can-making production line according to claim 7, characterized in that: The first front-to-back position adjustment mechanism further includes a first scale and a first indicator block. The first scale is mounted on the frame and is arranged in the front-to-back direction. The first indicator block is mounted on the first slider and corresponds to the scale position on the first scale.

9. A tinplate sheet pushing device for a can-making production line according to claim 6, characterized in that: The second front-to-back position adjustment mechanism includes a second slide groove, a second slider, a second adjusting screw, and a second handle. The second slide groove is mounted on the frame and runs in a front-to-back direction. The second slider is mounted in the second slide groove and slides in cooperation with the second slide groove. The second adjusting screw is rotatably mounted on the frame and is parallel to the second slide groove. The second slider has a second screw hole that meshes with the second adjusting screw. The second handle is fixedly mounted on the second adjusting screw. The second support base is connected to the second slider.

10. A tinplate sheet pushing device for a can-making production line according to claim 9, characterized in that: The second front-to-back position adjustment mechanism also includes a second scale and a second marking block. The second scale is mounted on the frame and is arranged in the front-to-back direction. The second marking block is mounted on the second slider and corresponds to the scale position on the second scale.

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