CN220537454U

CN220537454U - Feeding equipment

Info

Publication number: CN220537454U
Application number: CN202321385392.9U
Authority: CN
Inventors: 俞小飞
Original assignee: Shenzhen Helitai Technology Group Co ltd
Current assignee: Shenzhen Helitai Technology Group Co ltd
Priority date: 2023-06-01
Filing date: 2023-06-01
Publication date: 2024-02-27
Anticipated expiration: 2033-06-01

Abstract

The utility model discloses a feeding device which comprises a lifting mechanism, a first reflux device and a first conveying mechanism, wherein the first reflux device is arranged on the lifting mechanism; the lifting mechanism comprises a first end and a second end, the first end and the second end are used for conveying and lifting a workpiece placed at the first end to the second end in a first direction, the first end of the first conveying mechanism is arranged below the second end of the lifting mechanism and used for receiving the workpiece conveyed by the lifting mechanism and conveying the workpiece in a second direction, the first backflow device is arranged at the other end of the first conveying mechanism and used for conveying the workpiece conveyed by the first conveying mechanism to the first end of the lifting mechanism, and the lifting mechanism, the first conveying mechanism and the first backflow device are sequentially abutted to form a workpiece circulation runner. According to the technical scheme, the feeding equipment does not need to be manually involved in the process of transferring and reflowing materials, so that the labor cost is saved.

Description

Feeding equipment

Technical Field

The utility model relates to the technical field of feeding equipment, in particular to feeding equipment.

Background

Before the cream leaves the factory, the cream needs to be filled in a cream bottle, and as the cream is a paste with certain fluidity, a sealing gasket is needed to be additionally arranged between a cream bottle opening and a bottle cover before the sealing process is carried out on the cream bottle body filled with the cream, so that the cream is prevented from leaking in the transportation process. The sealing gasket is mostly divided into a front side and a back side, namely, a side contacted with the cream, and is usually a smooth side, so that the cream is not easy to adhere to the sealing gasket.

At present, mechanical arms are adopted for assembly aiming at the bottleneck sealing gaskets in most assembly schemes; firstly, a plurality of sealing gaskets are placed on a conveyor belt by a worker, then the conveyor belt conveys the sealing gaskets into a working area of the mechanical arm, under the cooperation of a vision system, the mechanical arm absorbs the front face of the sealing gaskets and places the back face of the sealing gaskets on a bottle mouth so as to carry out the next capping procedure, wherein the sealing gaskets with the back faces towards the mechanical arm are conveyed into a material frame to be collected so as to be convenient for the worker to transport, and the sealing gaskets are put in again.

However, the scheme has the following defects that the inverted sealing gaskets are inevitably arranged in the production process, and the quantity of the inverted sealing gaskets can be greatly increased along with the production requirement, so that the material frames can be fully loaded or even overflowed in a short time, and the labor is required to frequently participate in transportation, so that the labor cost is increased.

Disclosure of Invention

The utility model mainly aims to provide feeding equipment, and aims to solve the technical problem that the feeding equipment in the prior art needs to frequently participate in material backflow transportation manually, so that the labor cost is increased.

In order to achieve the above object, the feeding device provided by the present utility model includes:

the lifting mechanism comprises a first end and a second end and is used for conveying the workpiece placed at the first end towards a first direction and lifting the workpiece to the second end for throwing;

one end of the first conveying mechanism is arranged below the second end of the lifting mechanism and is used for receiving the workpiece conveyed from the lifting mechanism and then conveying the workpiece in a second direction;

the first reflux device is arranged at the other end of the first conveying mechanism and is used for conveying the workpiece conveyed by the first conveying mechanism to the first end of the lifting mechanism, and the lifting mechanism, the first conveying mechanism and the first reflux device are sequentially abutted to form a workpiece circulating runner.

In some embodiments, the feeding device further comprises:

the second reflux device is arranged at the second end of the lifting mechanism, the upstream end of the second reflux device is connected with the second end of the lifting mechanism, the downstream end of the second reflux device is positioned above one end of the first conveying mechanism, and the second reflux device is used for receiving the workpieces conveyed by the lifting mechanism and then throwing the workpieces into one end of the first conveying mechanism.

In some embodiments, the lifting mechanism further comprises:

the first conveying mechanism is used for receiving the materials conveyed by the first end and then conveying the materials towards the second end.

In some embodiments, the lifting mechanism further comprises:

the adjusting mechanism is arranged below the first conveying mechanism and used for adjusting the inclination angle of the first conveying mechanism.

In some embodiments, the adjustment mechanism comprises:

the two telescopic mechanisms are arranged below one end of the first conveying mechanism, the other one of the two telescopic mechanisms is arranged below the other end of the first conveying mechanism, and the two telescopic mechanisms are movably connected with the bottom of the first conveying mechanism and used for adjusting the inclination angle of the first conveying mechanism in the telescopic process.

In some embodiments, a plurality of feeding baffles are arranged at the first end of the lifting mechanism, the feeding baffles are enclosed to form a feeding bin which is open towards the workpiece conveying direction, and the feeding bin is used for accommodating the fed workpieces;

in some embodiments, the first conveying mechanism is provided with a plurality of raised strips, and the raised strips are uniformly and alternately distributed along the surface of the first conveying mechanism and are used for increasing the friction force between the first conveying mechanism and the workpiece.

In some embodiments, the first transfer mechanism comprises:

the conveying belt is arranged between the second reflux device and the first reflux device and is parallel to the second direction, and one end of the conveying belt is connected with the first reflux device;

and the material distributing device is arranged on the conveying belt and used for receiving the workpiece put in by the second reflow device, distributing the workpiece and then placing the workpiece on the conveying belt.

In some embodiments, the dispensing device comprises:

the inlet of the hopper is opposite to one end of the second backflow device and is used for receiving a workpiece, and an included angle is formed between the outlet of the hopper and the surface of the conveying belt.

The roll shaft is arranged at the outlet of the hopper and rotates so as to perform material distribution operation on the gaskets in the hopper.

In some embodiments, a first baffle is disposed on a side of the second reflow device away from the second end, a second baffle is disposed on a side of the first reflow device facing away from the first conveying mechanism, and the first baffle and the second baffle are both used for preventing the workpiece from sliding off.

According to the feeding device, a lifting mechanism is used for conveying and lifting a workpiece from a first end to a second end in a first direction, and a first conveying mechanism is arranged below the second end of the lifting mechanism and used for receiving the workpiece thrown in by the second end of the lifting mechanism, and the workpiece is conveyed to a preset area in a second direction after being received by the first conveying mechanism; when the workpiece which is not put in place exists, the workpiece is conveyed to the first reflow device under the action of the first conveying mechanism, and the workpiece is reflowed to the first end of the lifting mechanism after the conveying direction of the workpiece is changed under the action of the first reflow device so as to be put in next time to form the workpiece circulation reflow. Compared with the existing technical scheme that the reversed workpieces are collected and manually participated in transfer, the feeding equipment does not need to be manually participated in the transfer and backflow throwing process, and labor cost is greatly saved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the feeding device of the present utility model;

FIG. 2 is a schematic diagram of another overall structure of an embodiment of the loading apparatus of the present utility model;

FIG. 3 is an enlarged schematic view of FIG. 2 at A;

FIG. 4 is a side view of one embodiment of the loading apparatus of the present utility model;

fig. 5 is an enlarged schematic view at B in fig. 4.

The reference numerals in the figures are illustrated as follows:

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

It will also be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The utility model provides a feeding device which is mainly applied to feeding and reflow transferring of cream bottle opening pads.

Referring to fig. 1 and 2, in this embodiment, the feeding apparatus includes a lifting mechanism 100, a first conveying mechanism 200, and a first reflow apparatus 300, where:

the lifting mechanism 100 comprises a first end 101 and a second end 102, and is used for conveying and lifting the workpiece placed at the first end 101 to the second end 102 in a first direction E and then throwing. Of course, the lifting mechanism 100 may be disposed at an inclined angle with respect to the horizontal ground, and the first direction E forms an angle with the ground;

a first conveying mechanism 200, one end of which is disposed below the second end 102 of the lifting mechanism 100, and is configured to receive the workpiece conveyed from the lifting mechanism 100 and convey the workpiece in the second direction F; the work piece in this embodiment is referred to as a cream bottle mouth gasket, which is referred to as a gasket.

The first reflow apparatus 300 is disposed at the other end of the first conveying mechanism 200, and is used for conveying the workpiece conveyed by the first conveying mechanism 200 to the first end 101 of the lifting mechanism 100, and the lifting mechanism 100, the first conveying mechanism 200, and the first reflow apparatus 300 are sequentially abutted to form a workpiece circulation flow channel.

The first end 101 of the lifting mechanism can directly provide the sealing gasket for workers, and the first end 101 is connected with the end part of the first reflow device 300 in the conveying direction, so that the inverted sealing gasket conveyed by the first reflow device 300 can be directly received, and then the lifting mechanism can convey and lift the sealing gasket to the second end 102 to be put on the first conveying mechanism 200, so that the sealing gasket can be circularly reflowed.

In the use process of the feeding device of this embodiment, first, a worker may directly pour a large number of sealing gaskets into the first end 101 of the lifting mechanism 100, at this time, the lifting mechanism 100 starts to work, conveys and lifts the sealing gasket located at the first end 101 towards the first direction E, when the lifting mechanism 100 lifts the sealing gasket to the second end 102 and puts the sealing gasket onto one end of the first conveying mechanism 200, at this time, the first conveying mechanism 200 changes the conveying direction of the sealing gasket, that is, conveys the sealing gasket along the second direction F, and conveys the sealing gasket into the working range (e.g., the mechanical arm) of the grabbing device, so that the vision system can identify the sealing gasket being placed on the first conveying mechanism 200, and the mechanical arm can conveniently grab the sealing gasket onto the cream bottle mouth for assembly, so as to perform the next capping procedure.

After the front sealing gasket is grabbed by the manipulator, the first conveying mechanism 200 is positioned in the working area of the grabbing device, and a reverse sealing gasket is left, at this time, under the continuous conveying of the first conveying mechanism 200, the reverse sealing gasket is conveyed to the first reflux device 300 by the first conveying mechanism 200, the conveying direction of the sealing gasket is changed again by the first reflux device 300, and under the action of the first reflux device 300, the reverse sealing gasket is refluxed to the first end 101 of the lifting mechanism 100, so that the circulating reflux of the sealing gasket is completed once; the first end 101 of the lifting mechanism 100 receives the reflowed sealing gasket and then conveys and lifts the reflowed sealing gasket to the second end 102 again, and as the second end 102 of the lifting mechanism 100 and one end of the first conveying mechanism 200 have a height difference, the sealing gasket can be overturned in the process of throwing the sealing gasket, and when the sealing gasket is thrown onto the first conveying mechanism 200, the overturned sealing gasket is likely to be overturned and normally placed on the first conveying mechanism 200; if the overturning and the normal arrangement of the sealing gasket cannot be realized in the first backflow, the reversed sealing gasket can enter the next cycle.

In the feeding device of the embodiment, a lifting mechanism 100 is adopted to convey and lift a workpiece from a first end 101 to a second end 102 in a first direction E, and a first conveying mechanism 200 is arranged below the second end 102 of the lifting mechanism 100 and is used for receiving the workpiece put in by the second end 102 of the lifting mechanism 100, and after the first conveying mechanism 200 receives the workpiece, the workpiece is conveyed to a preset area in a second direction F; when there is a workpiece that is not put in place, the workpiece is conveyed to the first reflow device 300 under the action of the first conveying mechanism 200, and the workpiece is reflowed to the first end 101 of the lifting mechanism 100 after the conveying direction of the workpiece is changed under the action of the first reflow device 300, so that the workpiece is put in the next time to form the circulating reflow. Compared with the prior technical scheme that the reversed workpieces are collected and manually participated in transportation, the feeding equipment of the embodiment does not need manual participation in the transportation and backflow throwing process, and labor cost is greatly saved.

Optionally, the feeding device further includes a second reflow device 400, as shown in fig. 1, where the second reflow device 400 is disposed at the second end 102 of the lifting mechanism 100, an upstream of the second reflow device 400 is connected to the second end 102 of the lifting mechanism 100, a downstream end of the second reflow device 400 is located above one end of the first conveying mechanism 200, and the second reflow device 400 is configured to receive the workpiece conveyed by the lifting mechanism 100 and then deliver the workpiece to one end of the first conveying mechanism 200. The second reflow apparatus 400 may be a sloping plate gradually sloping from the second end 102 of the lifting mechanism 100 toward one end of the first conveying mechanism 200, and the sloping plate is configured to achieve the conveyance of the gasket and the change of the conveyance direction by using the height difference between the second end 102 of the lifting mechanism 100 and one end of the first conveying mechanism 200. Preferably, the second reflow apparatus 400 in this embodiment employs a member having slidability such as a conveyor belt, a roller shaft, or the like, and can more smoothly convey the gasket while changing the conveyance direction.

In the present embodiment, only the first conveying mechanism 200 is exemplified as being horizontally disposed (i.e., disposed in parallel with the second direction). Of course, in other embodiments, the first conveying mechanism 200 may be disposed obliquely, which is not particularly limited herein.

Referring to fig. 3, the lifting mechanism 100 in the present embodiment further includes:

the first conveying mechanism 103, the first end 101 and the second end 102 of the lifting mechanism 100 are respectively arranged at two ends of the first conveying mechanism 103, and the first conveying mechanism 103 is used for receiving the material conveyed by the first end 101 and then conveying the material towards the second end 102. The first conveying mechanism 103 as a component for conveying the gasket at the first end 101 of the lifting mechanism 100 to the second end 102 may specifically be a conveying belt, that is, conveying the workpiece in the first direction while lifting the workpiece to the second end 102, and of course, in other embodiments, the first conveying mechanism 103 may use a plurality of rollers, and a specific plurality of rollers are distributed side by side along the first direction, and conveying the gasket is achieved by linking the plurality of rollers.

In some embodiments, before or during the production process, the inclination angle of the first conveying mechanism 103 needs to be adjusted according to the actual situation to obtain a better lifting effect, as shown in fig. 4, in this embodiment, an adjusting mechanism 104 is disposed below the first conveying mechanism 103, so as to adjust the inclination angle of the first conveying mechanism 103. It should be noted that, the adjusting structure may be automatically lifted, specifically, the adjusting mechanism 104 may be driven by a screw, that is, the screw is erected below the first conveying mechanism 103, one end of the screw is rotationally connected with the motor, the middle of the screw is movably sleeved with the sliding table, two sides of the first conveying mechanism 103 are connected with the sliding table, and the screw is driven by the motor to rotate forward or reversely so as to lift or descend the first conveying mechanism 103.

In some embodiments, the adjusting mechanism 104 may be two telescopic mechanisms, one of the two telescopic mechanisms is disposed below one end of the first conveying mechanism 103, the other of the two telescopic mechanisms is disposed below the other end of the first conveying mechanism 103, and the two telescopic mechanisms are movably connected to the bottom of the first conveying mechanism 103 and are used for adjusting the inclination angle of the first conveying mechanism 103 in the telescopic process. In the present embodiment, only two telescopic mechanisms are provided as an example, but in other embodiments, three or four telescopic mechanisms may be used to adjust the tilt angle.

The telescopic mechanism can be adjusted by adopting a telescopic rod, and particularly can be adjusted in a cylinder driving mode, namely, the push rod of the cylinder is movably connected with the bottom of the first conveying mechanism 103, and the height and the angle of the first conveying mechanism 103 can be adjusted along with the expansion and the contraction of the cylinder. Thus, no matter before the preparation work is carried out in the processing production or during the processing, the staff can control the adjusting mechanism 104 to adjust the height and the angle of the first conveying mechanism 103 through the upper computer, which is quite convenient. Of course, in some embodiments, manual adjustment may be used, which is not particularly limited herein.

In another embodiment, the telescopic mechanism is only arranged below one of the first end 101 and the second end 102 of the first conveying mechanism 103, the other end of the first conveying mechanism 103 is rotatably installed, and the one end of the first conveying mechanism 103 is lifted or lowered to realize the adjustment of the inclination angle through the telescopic processing of the telescopic mechanism.

Due to the inclined arrangement of the first conveying mechanism 103, a loading bin 101a needs to be arranged at the first end 101 of the lifting mechanism 100 to prevent the dropped sealing gasket from falling out; specifically, the feeding bin 101a is disposed at the first end 101 in a plurality of enclosing manners, in this embodiment, preferably three feeding bins 101a are respectively enclosed above the first end 101 of the lifting mechanism to form a feeding bin, wherein one surface of the feeding bin facing the conveying direction of the first conveying mechanism 103 is an opening, and when the first conveying mechanism 103 starts to move towards the first direction E, workpieces in the feeding bin are conveyed to a preset position along with the first conveying mechanism 103; in this process, the first conveying mechanism 103 is disposed at a certain inclination angle, and needs to move in the first direction E, so that the workpiece itself has a weight, and therefore inertia is generated to slide, and at this time, the existence of the feeding bin 101a prevents the workpiece from falling out, and does not slide to the ground.

Referring to fig. 3, in the present embodiment, a plurality of protruding strips 103a are disposed on the first conveying mechanism 103, and the plurality of protruding strips 103a are uniformly and alternately distributed along the surface of the first conveying mechanism 103, so as to increase the friction between the first conveying mechanism 103 and the workpiece. It should be noted that, in the present embodiment, the length of the protruding strip 103a does not exceed the width of the first conveying mechanism 103, where the protruding strip 103a may be made of elastic materials, such as rubber, silica gel, etc., so that friction force can be increased during the process of conveying the sealing gasket by the first conveying mechanism 103, and the sealing gasket is prevented from sliding down due to its own weight and inertia.

Referring to fig. 4, in the present embodiment, the first conveying mechanism 200 includes:

the conveying belt 201 is arranged between the second reflux device 400 and the first reflux device 300 and is parallel to the second direction F, and one end of the conveying belt 201 is connected with the first reflux device 300;

the material distributing device 202 is arranged on the conveyer belt 201 and is used for receiving the workpiece put in by the second reflow device 400 and distributing the workpiece to the conveyer belt 201.

The conveying belt 201 is mainly used for receiving the sealing gasket put in by the second backflow device 400, specifically, a first backflow device 300 is arranged at the downstream of the conveying belt 201, the conveying belt 201 conveys the sealing gasket along a second direction F, the sealing gasket is conveyed to a preset area and then is used for a grabbing device to grab the sealing gasket which is arranged in front (the visual system is adopted for identification), and the reversed sealing gasket is continuously conveyed and put in the first backflow device 300;

optionally, the conveyor belt 201 is provided with a distributing device 202 for distributing the gasket put in by the second reflow device 400, specifically, the distributing device 202 is disposed below the second reflow device 400, and the distributing device 202 may adopt a hopper 202a to receive the gasket, and it should be noted that one end of the hopper 202a, which is close to the second conveyor belt, is a strip-shaped opening, as shown in fig. 5, and the strip-shaped opening is parallel to the surface of the conveyor belt 201, so that the gasket can be tiled on the surface of the conveyor belt 201.

In one embodiment, the hopper 202a has a vibration device mounted thereon; when the sealing washers received by the hopper 202a are more, the sealing washers may be stacked together to cause blockage, so that the stacking structure of the sealing washers in the hopper 202a is broken by vibration generated by the vibration device, so that the sealing washers can smoothly reach the strip-shaped opening, smoothly spread on the surface of the conveying belt 201, no manual participation is needed, and the working efficiency is improved.

In this embodiment, as shown in fig. 5, the material distributing device 202 further includes a roller 202b disposed at the outlet of the hopper 202a, and the roller 202b is rotated to perform the material distributing operation on the gasket in the hopper 202 a.

The roller 202b is specifically rotatably disposed in the hopper 202a, the rotation shaft of the roller 202b extends out of the side wall of the hopper 202a, and in the running process of the feeding device of this embodiment, the roller 202b is driven to rotate in a belt wheel manner, and the sealing gasket entering the hopper 202a is continuously rotated by the roller 202b, so that the stacking condition is avoided, and the sealing gasket can quickly reach the outlet of the hopper 202a and be spread on the surface of the conveying belt 201, thereby improving the working efficiency.

Alternatively, the roller 202b is composed of a pair of wheel sets, specifically, two roller 202b are adopted to cooperate, wherein the diameter of one roller 202b is smaller than that of the other roller 202 b; in operation, the driving device drives the small diameter roller 202b, and the small diameter roller 202b drives the large diameter roller 202b to rotate, which is mainly used for increasing torque, so that the sealing gasket in the hopper 202a has enough kinetic energy to reach the strip-shaped outlet.

Referring to fig. 4, in the present embodiment, a first baffle 401 is disposed on a side of the second reflow apparatus 400 away from the second end 102, a second baffle 301 is disposed on a side of the first reflow apparatus 300 opposite to the first conveying mechanism 200, and the first baffle 401 and the second baffle 301 are both used for preventing the gasket from sliding down. It should be noted that, the heights of the first baffle 401 and the second baffle 301 are higher than the side wall of the first reflow apparatus; in some embodiments, the height of the first baffle 401 may be higher than the discharge end of the lifting mechanism 100, and the height of the second baffle 301 may be higher than one end of the first conveying mechanism 200 (i.e. one end where the sealing gasket is put in), so as to prevent the sealing from being thrown out due to inertia generated by the lifting mechanism 100 and the first conveying mechanism 200, thereby improving the reliability of feeding and returning.

The above description of the preferred embodiments of the present utility model should not be taken as limiting the scope of the utility model, but rather should be understood to cover all modifications, variations and adaptations of the present utility model using its general principles and the following detailed description and the accompanying drawings, or the direct/indirect application of the present utility model to other relevant arts and technologies.

Claims

1. Feeding equipment, characterized in that includes:

the lifting mechanism comprises a first end and a second end and is used for conveying and lifting the workpiece placed at the first end to the second end in a first direction E and then throwing the workpiece;

2. The feeding apparatus as set forth in claim 1, further comprising:

the second reflux device is arranged at the second end of the lifting mechanism, the upstream end of the second reflux device is in butt joint with the second end of the lifting mechanism, the downstream end of the second reflux device is positioned above one end of the first conveying mechanism, and the second reflux device is used for receiving the workpieces conveyed by the lifting mechanism and then throwing the workpieces into one end of the first conveying mechanism.

3. A loading apparatus as recited in claim 2, wherein said lifting mechanism further comprises:

4. A feeding apparatus according to claim 3, wherein the lifting mechanism further comprises:

5. The feeding apparatus as set forth in claim 4, wherein said adjusting mechanism comprises:

6. A feeding apparatus according to claim 3, wherein the lifting mechanism further comprises:

the feeding bin is arranged above the first end of the lifting mechanism, one surface of the feeding bin facing the conveying direction of the first conveying mechanism is provided with an opening, and the feeding bin is used for accommodating workpieces and providing the workpieces for the first conveying mechanism.

7. A feeding device according to claim 3, wherein the first conveying mechanism is provided with a plurality of protruding strips, and the protruding strips are uniformly and alternately distributed along the surface of the first conveying mechanism and are used for increasing the friction force between the first conveying mechanism and the workpiece.

8. A feeding apparatus according to claim 2, wherein said first conveying means comprises:

9. A feeding apparatus according to claim 8, wherein said distributing means comprises:

the inlet of the hopper is opposite to one end of the second reflux device and is used for receiving a workpiece, and an included angle is formed between the outlet of the hopper and the surface of the conveying belt;

10. The feeding device according to claim 2, wherein a first baffle is arranged on a side, away from the second end, of the second backflow device, a second baffle is arranged on a side, facing away from the first conveying mechanism, of the first backflow device, and the first baffle and the second baffle are both used for preventing workpieces from sliding off.