Automatic small barrel bottom cover stacking device

Abstract

The utility model discloses an automatic small barrel bottom cover stacking device, which belongs to the technical field of stacking devices and comprises a rack, a tray capable of moving up and down is arranged on the rack, a material blocking rod is arranged on the rear side of the rack, material pushing assemblies are arranged on the left side and the right side of the rack, and the two material pushing assemblies can move relatively. According to the small barrel bottom cover stacking device, the small barrel bottom covers punched on a punching machine can be automatically stacked in order, the small barrel bottom covers are not damaged due to collision after being automatically stacked, and the product quality is improved; meanwhile, the labor intensity of workers is relieved, manpower output is reduced, the production cost is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of stacking devices, and in particular relates to an automatic stacking device for bottom covers of small barrels. Background Art

[0002] Steel drums are one of the traditional containers and they play a very important role in traditional containers. Steel drums have evolved from the function of temporarily storing the contents to today's industrial packaging, sales packaging, transportation packaging, etc.; from production to circulation and consumption, they have become a consistent flow container and a means of long-term preservation of the contents. It can be said that steel drums have brought great changes and progress to human work and life.

[0003] At present, the bottom caps of small barrels below 100 liters in China are all produced by single-person single-machine stamping. After the bottom caps are stamped, they slide freely into the flat frame next to the punch press by gravity, and then they need to be picked up one by one from the flat frame manually and stacked on the pallet. This operation method has the following problems and disadvantages: (1) After the bottom caps fall into the flat frame, the bottom caps are in a mess. The operator needs to pick up the bottom caps one by one from the flat frame and stack them on the pallet. Stacking takes a lot of time and seriously affects production efficiency; (2) After the bottom caps fall freely into the flat frame, the bottom caps collide with each other, causing damage to the edge of the bottom cap and scratches on the surface of the bottom cap, which directly affects product quality; (3) Due to the use of manual stacking, the labor intensity of workers is increased, and the manpower output is increased, which greatly increases the production cost. Utility Model Content

[0004] The utility model aims to provide an automatic stacking device for the bottom covers of small barrels, which not only solves the stacking problem of the bottom covers of small barrels after being stamped, but also solves the problems of damage and scratches caused by collisions of the bottom covers of small barrels, and solves the problem of low production efficiency of bottom cover stamping while reducing the number of operators and the labor intensity of workers.

[0005] To achieve the purpose of the utility model, the technical solution adopted is: an automatic stacking device for the bottom covers of small barrels, including a frame, a tray which can move up and down is provided on the frame, a material blocking rod is provided on the rear side of the frame, and pusher assemblies are provided on the left and right sides of the frame, and the two pusher assemblies can move relative to each other.

[0006] Furthermore, a support base plate is installed on the top of the frame, a lifting mechanism is installed on the support base plate, and an output end of the lifting mechanism is connected to the tray.

[0007] Furthermore, the lifting mechanism includes a linear screw lift and a motor installed on the support base plate, the input end of the linear screw lift is connected to the output end of the motor, and the output end of the linear screw lift is connected to the tray.

[0008] Furthermore, there are two linear screw lifts, and the two linear screw lifts are symmetrically arranged around the center of the tray.

[0009] Furthermore, a clamping claw cylinder is installed on the top of the frame, and two pushing components are installed at both ends of the clamping claw cylinder respectively.

[0010] Furthermore, the pusher assembly includes at least one pusher rod.

[0011] Furthermore, the frame is provided with two symmetrically arranged roller tracks, and the tray is rotatably supported with rollers that are slidably matched with the roller tracks.

[0012] Furthermore, an inclined slide is installed on the frame, and the lower end of the slide is connected to the tray.

[0013] Furthermore, a photoelectric switch 1 corresponding to the slide is installed on the top of the rack, a photoelectric switch 2 for sensing the tray is installed on the upper end of the rack, and a photoelectric switch 3 for sensing the tray is installed on the lower end of the rack.

[0014] Furthermore, a positioning block is fixedly mounted on the tray to prevent the tray from excessively moving upward, and a proximity switch 1 adapted to the positioning block is mounted on the upper end of the frame, and a proximity switch 2 adapted to the positioning block is mounted on the lower end of the frame.

[0015] The beneficial effects of the utility model are:

[0016] The utility model can not only make the bottom covers of the small barrels that have been punched on the punching machine to be automatically stacked neatly, but also the bottom covers of the small barrels are not damaged by collision after the automatic stacking, thereby improving the product quality; at the same time, it reduces the labor intensity of workers, reduces the manpower output, reduces the production cost, and improves the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings illustrate exemplary embodiments of the present invention and are used to explain the principles of the present invention together with the description. These drawings are included to provide a further understanding of the present invention, and the drawings are included in and constitute a part of this specification.

[0018] Figure 1 This is a front view of the automatic stacking device for bottom covers of small barrels provided by the utility model;

[0019] Figure 2 It is a side view of the automatic stacking device for bottom covers of small barrels provided by the utility model;

[0020] Figure 3 It is a top view of the automatic stacking device for bottom covers of small barrels provided by the utility model.

[0021] Markings and corresponding parts names in the attached drawings:

[0022] 1. Frame, 2. Linear screw lift, 3. Motor, 4. Connecting shaft, 5. Support seat plate, 6. Fixed plate, 7. Pallet, 8. Slide, 9. Stop rod, 10. Gripper cylinder, 11. Cylinder fixing frame, 12. Push rod, 13. Roller track, 14. Roller, 15. Positioning block, 16. Photoelectric switch 1, 17. Photoelectric switch 2, 18. Photoelectric switch 3, 19. Proximity switch 1, 20. Proximity switch 2, 21. Solenoid reversing valve. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with the accompanying drawings and implementations. It is to be understood that the specific implementations described herein are only used to explain the relevant content, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention are shown in the accompanying drawings.

[0024] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] like Figure 1 , Figure 2 , Figure 3 As shown, the utility model provides an automatic stacking device for bottom covers of small barrels, comprising a frame 1, which is in a frame structure. A tray 7 for storing the bottom covers of small barrels is arranged on the frame 1, and the tray 7 can move up and down on the frame 1. As more bottom covers of small barrels are stored on the tray 7, the height of the tray 7 becomes lower. In order to prevent the bottom covers of small barrels from falling directly from the tray 7 after falling on the tray 7, a blocking rod 9 and a pushing assembly are further provided on the frame 1. There are two pushing assemblies, and the side where the bottom covers of small barrels enter the upper part of the tray 7 is the front side of the frame 1. Then, the blocking rod 9 is located at the rear side of the tray 7, and the two blocking assemblies are respectively located on the left and right sides of the tray 7, and the two pushing assemblies can move relative to each other, so as to adjust the distance between the two pushing assemblies.

[0026] Before the bottom cover of the small barrel falls on the tray 7, the two pushing assemblies move relative to each other so that the width between the two pushing assemblies is greater than the diameter of the bottom cover of the small barrel; when the bottom cover of the small barrel after punching by the punch press falls on the tray 7 from the front side of the frame 1, at the moment when the bottom cover of the small barrel falls on the tray 7, the blocking rod 9 limits the small barrel bottom cover to continue to move in the direction of the punch press, so that the bottom cover of the small barrel will not move out from the rear side of the tray 7; at the same time, the two pushing assemblies move relative to each other so that the two pushing assemblies gradually move closer, and the two pushing assemblies respectively limit the left and right sides of the tray 7 so that the bottom cover of the small barrel will not move out from the left and right sides of the tray 7, thereby making the bottom cover of the small barrel that falls on the tray 7 stay on the tray 7 stably; repeat this, when the bottom covers of the small barrel are continuously stacked on the tray 7 to a certain height, generally set to 3 to 4 bottom covers, the tray 7 drops a height to facilitate the stacking of the bottom covers of the small barrels that are successively input on the tray 7.

[0027] As a further option of this embodiment, a support base plate 5 is installed on the top of the frame 1, a fixing plate 6 is also installed on the support base plate 5, a lifting mechanism is installed on the fixing plate 6, the output end of the lifting mechanism extends vertically downward, and the output end of the lifting mechanism passes through the fixing plate 6 and the support base plate 5 and is connected to the tray 7. The tray 7 is driven by the lifting mechanism to realize automatic up and down movement.

[0028] As a further option of this embodiment, the lifting mechanism includes a linear screw lift 2 and a motor 3. During installation, the linear screw lift 2 is installed on a fixed plate 6, and the input shaft in the linear screw lift 2 extends in a horizontal direction. The output shaft in the linear screw lift 2 passes through the fixed plate 6 and the support seat plate 5 and is rotatably connected to the tray 7. The motor 3 can be installed on the support seat plate 5 through a support seat, and the motor 3 can also be installed through an independent bracket; at the same time, the output end of the motor 3 is connected to the linear screw lift 2 through a coupling, so that the motor 3 drives the input shaft in the linear screw lift 2 to rotate when it rotates, and the input shaft in the linear screw lift 2 is the worm in the linear screw lift 2. The linear screw lift 2 drives the output shaft in the linear screw lift 2 through a turbine and worm transmission. The output shaft in the linear screw lift 2 moves up and down while rotating, thereby driving the tray 7 to move up and down, so that the height of the tray 7 can be adjusted. Here, the linear screw lift 2 can be selected as SWL2.5T linear screw lift 2, and the motor 3 can be selected as a 0.75KW motor.

[0029] As a further option in the present embodiment, in order to make the tray 7 more stable during the up and down movement, there are two linear screw lifts 2 in the utility model, and the output shafts of the two linear screw lifts 2 are located in the same vertical plane with the central axis of the tray 7, and the two linear screw lifts 2 are symmetrically arranged with the tray 7 as the center. In this case, when the two linear screw lifts 2 are installed, the input shafts in the two linear screw lifts 2 can be located in the same straight line, and then the connecting shaft 4 is used to connect the input shafts in the two linear screw lifts 2, and the output shaft of the motor 3 is connected to the input shaft in one of the linear screw lifts 2, so that one motor 3 can simultaneously drive the input shafts in the two linear screw lifts 2 to rotate. Of course, the number of linear screw lifts 2 in the utility model can also be four or six. In this case, the multiple linear screw lifts 2 are divided into two groups. The two groups of linear screw lifts 2 are symmetrically arranged around the center of the tray 7, and the multiple linear screw lifts 2 in each group are arranged at intervals along the width direction of the tray 7 or the length direction of the tray 7. At this time, the input shafts of the multiple linear screw lifts 2 in the same group are connected by a connecting shaft 4, and one of the connecting shafts 4 in one group of linear screw lifts 2 and one of the connecting shafts 4 in another group of linear screw lifts 2 can be connected by gear transmission or chain transmission.

[0030] As a further option in this embodiment, a clamping cylinder 10 is also installed on the top of the frame 1, and the two ends of the clamping cylinder 10 extend to the front side of the frame 1 and the rear side of the frame 1 respectively, and the middle of the clamping cylinder 10 and the middle of the tray 7 are on the same vertical plane, and two pusher assemblies are respectively installed at the two ends of the clamping cylinder 10. When the clamping cylinder 10 is extended, the clamping cylinder 10 pushes the two pusher assemblies to move to the outside of the frame 1, the spacing between the two pusher assemblies increases, and the bottom cover of the small barrel can be smoothly put on the tray 7; when the clamping cylinder 10 is retracted, the clamping cylinder 10 drives the two pusher assemblies to move to the middle of the frame 1, the spacing between the two pusher assemblies decreases, and the two pusher assemblies clamp and straighten the bottom cover of the small barrel dropped on the tray 7. Here, the clamping cylinder 10 can be a MHL2-20D cylinder. When the clamping cylinder 10 is installed, the two chambers of the clamping cylinder 10 are commonly equipped with an electromagnetic reversing valve 21, and the air inlet of the electromagnetic reversing valve 21 is connected to the air source.

[0031] In the present invention, the distance between the two material pushing components when the clamping cylinder 10 is extended and the distance between the two material pushing components when the clamping cylinder 10 is retracted can be adjusted according to the diameter of the bottom cover of the small barrel; similarly, the installation position of the blocking rod 9 on the frame 1 can also be adjusted according to the diameter of the bottom cover of the small barrel. For example, if the diameter of the bottom cover of the small barrel is small,

[0032] As a further option in this embodiment, the pusher assembly includes at least one pusher rod 12, which extends vertically. When there are multiple pusher rods 12 in the pusher assembly, the multiple pusher rods 12 are evenly spaced along the feeding direction of the barrel bottom cover, and the multiple pusher rods 12 can be fixedly connected by a connecting rod, and the output end of the clamping cylinder 10 can be fixedly connected to the connecting rod. In the utility model, when the tray 7 is in the initial position, the distance between the lower end of the pusher rod 12 and the upper surface of the tray 7 is less than the thickness of the barrel bottom cover, so as to avoid that the pusher assembly cannot effectively clamp and straighten the barrel bottom cover when the first barrel bottom cover enters the tray 7.

[0033] As a further option in this embodiment, in order to prevent the tray 7 from moving more smoothly in the process of up and down movement, a roller track 13 can be installed on the opposite sides of the frame 1, and the two roller tracks 13 are symmetrically arranged on the frame 1. At this time, the tray 7 can have two rollers 14 rotatably supported by the ear seat, and the two rollers 14 slide in cooperation with the two roller tracks 13 one by one. Through the sliding cooperation between the rollers 14 and the roller tracks 13, the tray 7 can be guided by the cooperation between the rollers 14 and the roller tracks 13 in the process of up and down movement, which not only makes the tray 7 move more smoothly in the process of up and down movement, but also effectively prevents the tray 7 from generating horizontal displacement in the process of up and down movement.

[0034] The roller 14 may be made of nylon, and the roller 14 may be in the shape of a V-shaped roller 14 , while the roller track 13 may be a roller track 13 with a V-shaped cross section.

[0035] Of course, in order to make the tray 7 more stable during the up and down movement, in addition to the sliding cooperation between the rollers 14 and 14, the cooperation between the guide shaft and the guide rod can also be adopted. Specifically, a vertically extending guide shaft can be installed on the frame 1, and a guide rod slidably mounted on the guide shaft can be installed on the tray 7. At this time, the tray 7 can also be guided during the up and down movement.

[0036] As a further option in this embodiment, the frame 1 is also equipped with an inclined slide 8, which is fixed to the frame 1 by bolts, so that the installation height of the slide 8 on the frame 1 and the inclination angle of the slide 8 on the frame 1 can be adjusted. When the utility model is used, the high end of the slide 8 docks with the discharge position on the punch press, and the low end of the slide 8 docks with the tray 7. The cross section of the slide 8 is U-shaped, which effectively prevents the bottom cover of the small barrel from falling from both sides of the slide 8 during the process of entering the tray 7 through the slide 8. The high end of the slide 8 can be trumpet-shaped, so that the bottom cover of the small barrel after being stamped by the punch press can accurately enter the slide 8; and the width of the low end of the slide 8 is adapted to the diameter of the bottom cover of the small barrel, so that the bottom cover of the small barrel entering the slide 8 can accurately fall on the tray 7.

[0037] As a further option in this embodiment, in order to conveniently monitor whether there is a keg bottom cover entering the tray 7 through the slide 8, the height of the tray 7, and the stacking situation on the tray 7, a photoelectric switch 16 is installed on the top of the frame 1, a photoelectric switch 2 17 is installed on the upper end of the frame 1, and a photoelectric switch 3 18 is installed on the lower end of the frame 1, wherein the photoelectric switch 16 is used to detect whether there is a keg bottom cover passing through the slide 8, and the photoelectric switch 2 17 and the photoelectric switch 3 18 are used to sense the tray 7, thereby monitoring the stacking situation of the keg bottom cover on the tray 7.

[0038] As a further option in this embodiment, a positioning block 15 is fixedly installed on the tray 7, a proximity switch 19 is installed at the upper end of the frame 1, and a proximity switch 20 is installed at the lower end of the frame 1. When the tray 7 is in the initial position, the proximity switch 19 senses the positioning block 15 on the tray 7, and when the tray 7 is in the lowest position, the proximity switch 20 senses the positioning block 15 on the tray 7.

[0039] The utility model is also equipped with a controller and an operation button, which are installed together on the electric control box. The controller can be Zhongda Youkong MM-12MR-280LED-FX-A. The start switch of the motor 3 and the input end of the electromagnetic reversing valve 21 are connected to the output end of the controller, and the output ends of the photoelectric switch 16, the photoelectric switch 21, the photoelectric switch 3, the proximity switch 19, the proximity switch 19 and the operation button are connected to the input end of the controller.

[0040] When it is necessary to stack the bottom covers of the kegs, the bottom covers of the kegs formed by the punch press are driven by the punching material to fall onto the slide 8, and the bottom covers of the kegs automatically slide down along the conveying slide 8 onto the tray 7. When the bottom covers of the kegs fall onto the tray 7, the blocking rod 9 restricts the bottom covers of the kegs that have fallen onto the tray 7 from continuing to move forward. When the bottom covers of the kegs are moving along the slide 8 toward the tray 7, the photoelectric switch 16 senses that the bottom covers of the kegs have passed by, and the controller sends a signal, which is transmitted to the electromagnetic reversing valve 21. After receiving the signal, the electromagnetic reversing valve 21 opens with a delay of 0.15 seconds (the specific time can be adjusted according to demand). This 0.15 second time is the time it takes for the bottom covers of the kegs to slide onto the tray 7, and When the electromagnetic reversing valve 21 is opened, compressed gas enters the rod-type cavity of the gripper cylinder 10, and compressed gas is discharged from the rodless type cavity of the gripper cylinder 10, and the gripper cylinder 10 contracts. While the gripper cylinder 10 contracts, it drives the two groups of pushing assemblies to approach each other, so that the pushing assemblies located on both sides of the bottom cover of the bucket push the bottom cover; at this time, the bottom cover of the bucket is accurately positioned on the tray 7 under the action of the material blocking rod 9 and the pushing rod 12 in the pushing assembly. After the bottom cover of the bucket is accurately positioned on the tray 7, the electromagnetic reversing valve 21 controls the rod-type cavity of the gripper cylinder 10 to discharge gas, and the rodless type cavity of the gripper cylinder 10 to take in air, the cylinder shaft of the gripper cylinder 10 extends, and the pushing assemblies located on both sides of the bottom cover of the bucket are reset.

[0041] Similarly, the bottom covers of the small barrels are successively stamped and formed, and slide down from the slideway 8. Under the action of the blocking rod 9 and the push rod 12 in the push assembly, the cylinder shaft of the clamping claw cylinder 10 drives the push assembly to accurately stack the bottom covers of the small barrels at a fixed position on the tray 7. Repeat this step, and the bottom covers of the small barrels are neatly stacked on the tray 7. When the bottom covers of the small barrels are continuously stacked on the tray 7 to a certain height, generally set to 3 to 4 bottom covers of the small barrels, the photoelectric switch 17 sends a signal. After the controller receives the signal sent by the photoelectric switch 17, the controller sends a signal to the start switch of the motor 3. After receiving the signal, the start switch of the motor 3 starts to rotate, and the motor 3 drives the input shafts of the two linear screw lifts 2 to rotate. The rotation of the input shafts of the two linear screw lifts 2 respectively drives the two output shafts of the linear screw lift 2 to rotate. The output shaft of the linear screw lift 2 moves downward during the rotation process, thereby driving the tray 7 to move downward to a certain height to ensure that there is a certain space to meet the continuous stacking of the bottom covers of the small barrels. It should be noted that the running time of the motor 3 is controlled by the controller, so that the downward running distance of the tray 7 can be controlled.

[0042] During the downward movement of the tray 7, when the proximity switch 20 senses the limit block on the tray 7, the stacking height of the bottom cover of the keg has reached the limit position. At this time, the photoelectric switch 3 18 sends a signal. After the controller receives the signal sent by the photoelectric switch 3 18, the controller sends a signal to the start switch of the motor 3. After receiving the signal, the start switch of the motor 3 stops rotating. At this time, the operator turns the bottom cover of the keg off the tray 7 completely.

[0043] When all the bottom covers of the small barrels on the tray 7 are taken out, the staff operates the operation button to send a signal to the controller through the operation button. The controller sends a signal to the start switch of the motor 3. After receiving the signal, the start switch of the motor 3 starts to rotate in the opposite direction. The motor 3 drives the input shafts in the two linear screw lifts 2 to rotate in the opposite direction. The rotation of the input shafts in the two linear screw lifts 2 respectively drives the two output shafts in the linear screw lifts 2 to rotate in the opposite direction. The output shafts of the linear screw lifts 2 move upward during the rotation, thereby driving the tray 7 to move upward; when the tray 7 moves upward to the highest position, the proximity switch 19 senses the limit block on the tray 7, and the proximity switch 19 sends a signal. After the controller receives the signal sent by the proximity switch 19, the controller sends a signal to the start switch of the motor 3. After receiving the signal, the start switch of the motor 3 stops rotating, and the device restarts the next round of automatic stacking operation.

[0044] The structure of this device:

[0045] 1. The slideway 8 for conveying the bottom cover of the keg is fastened on the frame 1 by bolts during installation, so that the slideway 8 can adjust its height and angle.

[0046] 2. The installation position of the push rod 12 on the frame 1 and the position between the two sets of material blocking components are adjustable. The position of the push rod 12 and the position between the two sets of material blocking components can be adjusted according to the size of the punched barrel bottom cover.

[0047] 3. When the linear screw lift 2 drives the tray 7 downward to the photoelectric switch 3 18, the motor 3 stops. When the photoelectric switch 3 18 is damaged or fails, the linear screw lift 2 drives the tray 7 downward to the proximity switch 20, and the power supply is automatically turned off to protect the device from failure.

[0048] 4. When the linear screw lift 2 drives the tray 7 to move up to the proximity switch 19, the motor 3 stops. When the proximity switch 19 is damaged or fails, the linear screw lift 2 drives the tray 7 to move up to the photoelectric switch 2 17, and the photoelectric switch 2 17 sends a signal, and the controller realizes automatic control, and the linear screw lift 2 drives the tray 7 to move downward to a certain height, so as to provide fault protection for the device.

[0049] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments / methods or examples. In addition, those skilled in the art may combine and combine the different embodiments / methods or examples described in this specification and the features of the different embodiments / methods or examples, unless they are contradictory.

[0050] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0051] Those skilled in the art should understand that the above embodiments are only for the purpose of clearly illustrating the present invention, and are not intended to limit the scope of the present invention. For those skilled in the art, other changes or modifications may be made based on the above disclosure, and these changes or modifications are still within the scope of the present invention.

Claims

1. An automatic stacking device for bottom covers of small barrels, characterized in that: The machine comprises a frame (1), a tray (7) which can move up and down is arranged on the frame (1), a material blocking rod (9) is arranged on the rear side of the frame (1), and material pushing assemblies are arranged on both the left and right sides of the frame (1), and the two material pushing assemblies can move relative to each other.

2. The automatic stacking device for bottom covers of small barrels according to claim 1 is characterized in that: A support base plate (5) is installed on the top of the frame (1), a lifting mechanism is installed on the support base plate (5), and an output end of the lifting mechanism is connected to a tray (7).

3. The automatic stacking device for bottom covers of small barrels according to claim 2 is characterized in that: The lifting mechanism comprises a linear screw lift (2) and a motor (3) mounted on a support base plate (5); the input end of the linear screw lift (2) is connected to the output end of the motor (3); and the output end of the linear screw lift (2) is connected to a tray (7).

4. The automatic stacking device for bottom covers of small barrels according to claim 3 is characterized in that: There are two linear screw lifts (2), and the two linear screw lifts (2) are symmetrically arranged around the center of the tray (7).

5. The automatic stacking device for bottom covers of small barrels according to claim 1 is characterized in that: A clamping cylinder (10) is also installed on the top of the frame (1), and two material pushing assemblies are respectively installed at two ends of the clamping cylinder (10).

6. The automatic stacking device for bottom covers of small barrels according to claim 5 is characterized in that: The pusher assembly comprises at least one pusher rod (12).

7. The automatic stacking device for bottom covers of small barrels according to claim 1, characterized in that: The frame (1) is also provided with two symmetrically arranged roller tracks (13), and the tray (7) is rotatably supported with rollers (14) that are slidably matched with the roller tracks (13).

8. The automatic stacking device for bottom covers of small barrels according to any one of claims 1 to 7, characterized in that: The frame (1) is also provided with an inclined slideway (8), the lower end of the slideway (8) being butted against the tray (7).

9. The automatic stacking device for bottom covers of small barrels according to claim 8, characterized in that: The top of the frame (1) is provided with a photoelectric switch 1 (16) corresponding to the slideway (8), the upper end of the frame (1) is provided with a photoelectric switch 2 (17) for sensing the tray (7), and the lower end of the frame (1) is provided with a photoelectric switch 3 (18) for sensing the tray (7).

10. The automatic stacking device for bottom covers of small barrels according to claim 9, characterized in that: A positioning block (15) is fixedly mounted on the tray (7) to prevent the tray (7) from excessively moving upwards, and a proximity switch (19) adapted to the positioning block (15) is mounted on the upper end of the frame (1), and a proximity switch (20) adapted to the positioning block (15) is mounted on the lower end of the frame (1).

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