CN110654846B

CN110654846B - Push plate baffle device

Info

Publication number: CN110654846B
Application number: CN201911027087.0A
Authority: CN
Inventors: 李青祝; 安晶; 周临震; 刘军; 吉静
Original assignee: Yancheng Feiyou Technology Co ltd
Current assignee: Yancheng Feiyou Technology Co ltd
Priority date: 2019-10-27
Filing date: 2019-10-27
Publication date: 2024-09-24
Anticipated expiration: 2039-10-27
Also published as: CN110654846A

Abstract

The invention discloses a push plate baffle device, which comprises a push plate mechanism (1) and a baffle mechanism (3), wherein the push plate mechanism (1) is arranged on a frame (4) through a linear motion pair (5), the push plate mechanism (1) can linearly move on the frame (4) along the arrangement direction of the linear motion pair (5) under the drive of external power, a buffer storage conveying frame (41) for receiving plates is arranged at the rear side of the tail end of the linear motion pair (5), the baffle mechanism (3) is arranged at one side of the buffer storage conveying frame (41) adjacent to the linear motion pair (5), and a blocking surface of the baffle mechanism (3) and a push plate surface of the push plate mechanism (1) are oppositely arranged. The push plate baffle device can push dozens of layers or even dozens of layers of plates at one time, effectively avoids the clamping plate and plate falling phenomena, has extremely high efficiency, can well meet the requirement of equipment on high speed, and has very good application value.

Description

Push plate baffle device

Technical Field

The invention relates to the technical field of plate conveying, in particular to a push plate baffle device capable of efficiently pushing plates on a plate stack to a conveying line or other machines.

Background

At present, when the plates are conveyed, the sucker is adopted or the conveyer belt and baffle mechanism are adopted for single-layer conveying, so that the conveying efficiency is low, and the requirement of increasing the speed of the machine cannot be met. There are also enterprises that adopt double-deck or even multilayer sucking discs to improve conveying efficiency, and this structure is relatively complicated, and efficiency improvement is limited, and to the machine processing of increasingly high-speed, it carries the feed speed still and can't keep up with the takt, to the mode processing of carrying the material of manual work of high-speed equipment most enterprises still.

Disclosure of Invention

The invention aims at solving the problems in the prior art and provides a push plate baffle device which can efficiently push plates on a plate stack to a conveying line or other machines; this push pedal baffle device can be when the panel carries, adopts whole battle buttress feeding, carries out propelling movement and promote the push pedal mechanism that upper plate material removed and the baffle mechanism that hinders the lower plate material removal to the multilayer panel on the battle buttress tray can work in coordination, avoids not pushing away the plywood and smugglies the board of pushing away.

The invention aims at solving the problems through the following technical scheme:

A push plate baffle device, characterized in that: the pushing plate baffle device comprises a pushing plate mechanism and a baffle mechanism, wherein the pushing plate mechanism is arranged on a frame through a linear motion pair, the pushing plate mechanism can linearly move on the frame along the arrangement direction of the linear motion pair under the drive of external power, a buffer storage conveying frame for receiving plates is arranged at the rear side of the tail end of the linear motion pair, the baffle mechanism is arranged at one side of the buffer storage conveying frame adjacent to the linear motion pair, and a blocking surface of the baffle mechanism and a pushing plate surface of the pushing plate mechanism are oppositely arranged; the pushing plate mechanism pushes a plate layer with a certain height on a plate stack between the pushing plate mechanism and the baffle mechanism under the drive of external power and is conveyed to the buffer conveying rack through the top of the baffle mechanism, and meanwhile, the baffle mechanism can block the movement of the plate which is not pushed.

The upper part of the blocking surface of the baffle mechanism is a curved surface or a plane with guiding function.

The push plate mechanism comprises one or more fixed push plates which are sequentially arranged from top to bottom, the fixed push plates are arranged on the push plate frame, and the upper parts of the push plate frames are embedded on the linear motion pairs, so that the push plate frames can linearly move on the frame along the arrangement direction of the linear motion pairs under the driving of external power.

The push plate mechanism comprises a movable push plate, the movable push plate is arranged on the fixed push plate through a compression spring, and the movable push plate can downwards extend out of the lower edge of the lowest fixed push plate.

The baffle mechanism comprises a fixed baffle and a movable baffle, the movable baffle is arranged on the fixed baffle through a supporting spring, the blocking surface of the movable baffle is an inclined surface or an arc surface, and the movable baffle is ejected upwards by the supporting spring under the action of the supporting spring.

The baffle mechanism comprises a baffle driving mechanism, wherein the baffle driving mechanism is arranged on a beam of the frame or at the front end of the buffer conveying frame, and the telescopic front end of the baffle driving mechanism is fixed on the back surface of the fixed baffle.

The front end of a guide shaft embedded in the guide seat is rigidly connected with the back of the fixed baffle.

The auxiliary pushing mechanism comprises a pushing claw, a pushing spring, a lifting rod, an auxiliary pushing driving mechanism and a connecting block, wherein the tail end of the auxiliary pushing driving mechanism is fixed on a supporting component of the pushing mechanism through the connecting block; the top beam of the pushing claw is connected with the bottom of the pushing spring, the top of the pushing spring is also fixed on the supporting part of the pushing plate mechanism, and the pushing claw drives the lifting rod to extend out and descend to the lowest position under the action of the elasticity of the pushing spring.

A blocking plate is arranged on the rear side of the pushing claw and fixedly arranged on a supporting part of the pushing plate mechanism so as to limit the backward movement of the pushing claw.

The auxiliary push plate mechanism comprises a plurality of pairs of push claws and push springs which are arranged in one-to-one correspondence, and rollers are arranged at the bottoms of the push claws, so that the push claws can roll and move on the plates.

It should be noted that: placing multiple layers of sheet material on a tray is referred to as a stack, a stack sometimes containing up to tens or even hundreds of layers of sheet material; the same-layer plate material can be an integral large plate material or a plurality of plates (such as a floor).

Compared with the prior art, the invention has the following advantages:

The baffle mechanism and the push plate mechanism are a group of mechanisms which are mutually cooperated, and the baffle mechanism is used for playing a role in blocking the lower layer of the non-push plate layer so as to prevent the lower layer of the non-push plate layer from being driven by the push plate mechanism, and the baffle mechanism also plays a role in providing a certain resistance force for the upper layer of the plate layer pushed by the push plate mechanism; when the pushing plate mechanism starts to push the plate, the pushed plate must cross the inclined plane or the cambered surface on the blocking surface of the baffle mechanism, and the plate which cannot cross the inclined plane or the cambered surface is blocked at the front side of the baffle mechanism; after the pushed plate passes over the inclined plane, the baffle plate of the baffle plate mechanism is attached to the lower surface of the movable plate, so that the lower plate is prevented from being taken away to form entrainment; meanwhile, an auxiliary push plate mechanism in the push plate mechanism starts to act to carry out secondary push plate, so that the plate falling phenomenon of the push plate mechanism in the push plate process is pushed away, a good auxiliary effect is achieved, the effectiveness of the push plate mechanism is ensured, and the plate falling phenomenon in the push plate is reduced.

The baffle plate pushing plate device has exquisite conception, well combines the pushing plate and the baffle plate, can push more than ten layers of even tens layers of plates at one time, can effectively avoid the phenomena of clamping plates and falling plates, has extremely high efficiency, can well meet the requirement of equipment on high speed, and has very good application value.

Drawings

FIG. 1 is a schematic view of the operation of the push plate baffle device of the present invention;

FIG. 2 is a schematic illustration of one of the push plate mechanisms of the present invention;

FIG. 3 is a second schematic structural view of the push plate mechanism of the present invention;

FIG. 4 is a schematic structural view of the auxiliary push plate mechanism of the present invention;

FIG. 5 is a second schematic structural view of the secondary pusher mechanism of the present invention;

FIG. 6 is a schematic illustration of the pawl structure of the present invention;

FIG. 7 is a top view of the baffle mechanism of the present invention;

fig. 8 is a side view of the baffle mechanism of the present invention.

Wherein: 1-a push plate mechanism; 11-a push plate frame; 12-fixing the push plate; 13-a movable push plate; 14-compressing the spring; 2-a secondary push plate mechanism; 21-pushing claws; 22-a blocking plate; 23-push-out spring; 24-lifting bar; 25-auxiliary pushing driving mechanism; 26-connecting blocks; 3-a baffle mechanism; 31-a fixed baffle; 32-a movable baffle; 33-a guide shaft; 34-a guide seat; 35-a baffle driving mechanism; 36-a supporting spring; 4-a frame; 41-a buffer conveyor frame; 5-a linear motion pair.

Detailed Description

The invention is further described below with reference to the drawings and examples.

As shown in fig. 1-8: the baffle plate pushing device mainly comprises a pushing plate mechanism 1, a subsidiary pushing plate mechanism 2, a baffle plate mechanism 3 and a frame 4. The push plate mechanism 1 is arranged on the frame 4, the push plate mechanism 1 is connected with the frame 4 through a linear motion pair 5, and the push plate mechanism 1 can linearly move on the frame 4; the auxiliary push plate mechanism 2 is arranged on the push plate mechanism 1, can linearly move along with the push plate mechanism 1, and a movable part in the auxiliary push plate mechanism 2 can move along a guide groove in the push plate mechanism 1; the baffle mechanism 3 is arranged on the frame 4, the baffle surface in the baffle mechanism 3 is opposite to the push plate surface of the push plate mechanism 1, and the baffle surface in the baffle mechanism 3 is also opposite to the auxiliary push plate surface of the auxiliary push plate mechanism 4. The upper part of the baffle plate surface of the baffle mechanism 3 is a curved surface or plane with guiding function, and the curved surface or plane can be an inclined surface with taper, an arc surface or other types of curved surfaces.

In general, the upper edge of the blocking surface of the baffle mechanism 3 is not lower than the lower edge of the push plate surface of the push plate mechanism 1, and the height of the curved surface or plane is not smaller than the height difference between the upper edge of the blocking surface of the baffle mechanism 3 and the lower edge of the push plate surface of the push plate mechanism 1, and the height of the guiding curved surface at the upper part of the blocking surface is generally 1-5 plate thickness values; in addition, in a special case where the thickness of the plate material is large, the upper edge of the blocking surface of the shutter mechanism 3 can be lower than the lower edge of the push plate surface of the push plate mechanism 1.

The invention provides a push plate baffle device for pushing a plate stack, wherein a push plate mechanism 1 and a baffle mechanism 3 in the push plate baffle device are both arranged on a frame 4, the push plate mechanism 1 can linearly move on the frame 1, the push plate surface of the push plate mechanism 1 is opposite to the baffle surface of the baffle mechanism 3, and the plate stack to be pushed is arranged between the push plate mechanism 1 and the baffle mechanism 3. After the plate stack is in place, the plate pushing mechanism 1 pushes the plates with a certain height to move to the upper surfaces of the baffles of the baffle mechanism 3, and the baffle mechanism 3 can block the movement of the non-pushed plates at the lower layer and play a role of a supporting plate for the plates pushed to pass over the movable baffles 32; the stack is thus divided into two parts, one part being the part pushed by the pusher mechanism 1 and the other part being the part left on the tray blocked by the shutter mechanism 3. The pushing plate mechanism 1 is also provided with an auxiliary pushing plate mechanism 2, when the pushing plate mechanism 1 starts to push a plate stack, the pushing plate mechanism 1 acts, the auxiliary pushing plate mechanism 2 is retracted under the action of the auxiliary pushing driving mechanism 25 and is retracted behind the pushing plate of the pushing plate mechanism 1, and the auxiliary pushing plate mechanism is not acted; when the push plate mechanism 1 pushes a plate stack to move, the resistance of the baffle mechanism 3 needs to be overcome, when the push plate mechanism 1 pushes a plate with a certain height to move above the baffle of the baffle mechanism 3, the auxiliary push driving mechanism 25 in the auxiliary push plate mechanism 2 unloads pressure, the push claw 21 in the auxiliary push plate mechanism 2 stretches out under the action of the push spring 23, the push claw 21 stretches out by a distance of about one thickness of the plate compared with the lower edge of the push plate in the push plate mechanism 1, when the push plate mechanism 1 pushes the plate to move, the push claw 21 in the auxiliary push plate mechanism 2 can effectively push the plate secondarily, the plate is pushed to move continuously, and due to the action of the push spring 23, the roller in the auxiliary push plate mechanism 2 presses on the upper surface of the plate blocked by the baffle mechanism 3 to roll. The auxiliary plate pushing machine 2 can play a role of a secondary plate pushing when a plate falls in the plate pushing process of the plate pushing mechanism 1.

The push plate baffle device provided by the invention is described in detail below with reference to the accompanying drawings.

As shown in fig. 1-6, the push plate mechanism 1 is mounted on the frame 4, the push plate mechanism 1 is connected with the frame 4 through a linear motion pair 5, and the push plate mechanism 1 can linearly move on the frame 4 under the drive of external power; the auxiliary push plate mechanism 2 is arranged on the push plate mechanism 1, and can linearly move on the frame 4 along with the push plate mechanism 1. The pushing claw 21 serving as a movable part in the auxiliary pushing plate mechanism 2 can move along the guide groove in the pushing plate mechanism 1, when the pushing claw 21 stretches out under the action of the pushing spring 23, the lower edge of the pushing claw 21 is lower than the lower edge of the movable pushing plate 13 in the pushing plate mechanism 1, when the bottom of the pushing plate mechanism 1 is pushed, the pushing claw 21 of the auxiliary pushing plate mechanism 2 continuously pushes the dropped plate when the plate falls off, the pushing plate process is completed together with the pushing plate mechanism 1, and the auxiliary pushing plate mechanism 2 just plays a role of secondarily compensating the pushing plate; when the pusher 21 in the sub-pusher mechanism 2 is retracted, the lower edge of the pusher 21 is higher than the movable pusher 13 in the pusher mechanism 1, at which time the sub-pusher mechanism 2 is not active. Baffle mechanism 3 installs in frame 4 or buffer memory transport frame 41, and baffle face in baffle mechanism 3 is relative with the push pedal face of push pedal mechanism 1, and baffle face in baffle mechanism 3 is also relative with the vice push pedal face of vice push pedal mechanism 2, contains the inclined plane of taking the tapering in baffle face of baffle mechanism 3, and when making things convenient for push pedal mechanism 1 and vice push pedal mechanism 2 to promote multilayer panel, panel can cross the baffle, provides certain resistance to the panel.

As shown in fig. 1-3, the pusher mechanism 1 is composed of a pusher frame 11, a fixed pusher 12, a movable pusher 13, and a hold-down spring 14. The push plate mechanism 1 is arranged on the frame 4 through a push plate frame 11, and the fixed push plate 12 is arranged on the push plate frame 11; the movable push plate 13 is connected to the fixed push plate 12 through a compression spring 14; one or more hold-down springs 14 are mounted between the movable push plate 13 and the stationary push plate 12. The movable push plate 13 is pressed by the pressing spring 14, and the movable push plate 13 can move a certain distance relative to the fixed push plate 12 against the elastic force provided by the pressing spring 14. When the main board mechanism 1 pushes a plate, when the end face of the bottommost board is only contacted with the movable push plate 13 by a small part of the upper edge, the contact area of the movable push plate 13 and the end face of the bottommost board is small, and because of the blocking of the baffle mechanism 3, if the bottommost board cannot pass over the baffle mechanism 3, the bottommost board can generate larger wedge pressure on the movable push plate 13, the movable push plate 13 can overcome the acting force extrusion lifting of the compression spring 14 under the action of the wedge pressure, and the push plate mechanism 1 and the auxiliary push plate mechanism 2 can separate from the bottommost board without pushing the laminated board, namely, the bottommost board is blocked by the baffle mechanism 3.

As shown in fig. 1 and 4-6, the auxiliary pushing plate mechanism 2 is composed of a pushing claw 21, a blocking plate 22, a spring 23, a lifting rod 24, an auxiliary pushing driving mechanism 25 and a connecting block 26. The pushing claws 21 are provided in plurality, the pushing claws 21 are arranged between the guide grooves of the movable pushing plate 13 and the blocking plates 22 in the pushing plate mechanism 1, and the pushing claws 21 can slide along the guide grooves of the movable pushing plate 13; the blocking plate 22 is mounted on the pusher frame 11 of the pusher mechanism 1, and serves to block the backward movement of the pusher 21, and when the pusher 21 pushes the pusher, the pushing force of the blocking plate 22 against the pusher 21 restricts the pusher 21 to slide only in the guide groove, but not in the pushing force direction. The spring 23 is arranged between the push plate frame 11 and the push claw 21 of the push plate mechanism 1, when the auxiliary push driving mechanism 25 does not work, the push claw 21 pushes the lifting rod 24 to the lowest position under the action of the spring 23, at the moment, the push claw 21 in the auxiliary push plate mechanism 2 slides to the lowest position along the movable push plate 13, and the lower edge of the push claw 21 is lower than the movable push plate 13, so that the auxiliary push driving mechanism can play a role of a secondary push plate; the lifting rod 24 is a movable rod, the lifting rod 24 is connected with a piston rod of the auxiliary pushing driving mechanism 25, and when the piston rod of the auxiliary pushing driving mechanism 25 is contracted, the lifting rod 24 can lift all the pushing claws 21; when the auxiliary pushing driving mechanism 25 is extended, the auxiliary pushing driving mechanism 25 is not connected with high-pressure air pressure or hydraulic oil, and all the pushing claws 21 return to the lowest position under the action of the springs 23, that is, the extension of the pushing claws 21 depends on the action of the springs 23, and the pushing claws 21 are retracted to depend on the action of the auxiliary pushing driving mechanism 25.

As shown in fig. 7 to 8, the shutter mechanism 3 is composed of a fixed shutter 31, a movable shutter 32, a guide shaft 33, a guide holder 34, a shutter drive mechanism 35, and a support spring 36. The guide seat 34 is arranged on the frame 4, the guide shaft 33 is rigidly connected with the fixed baffle 31, and the guide shaft 33 can slide linearly along the guide hole in the guide seat 34 with the fixed baffle 31; the piston rod end of the baffle driving mechanism 35 is connected with the fixed baffle 31, the cylinder body end of the baffle driving mechanism 35 is arranged on the frame 4, and the piston rod of the baffle driving mechanism 35 can drive the fixed baffle 31, the movable baffle 32 and the guide shaft 33 to slide linearly along the guide hole in the guide seat 34 when stretching and contracting. The movable baffle 32 is mounted on the fixed baffle 31 through a supporting spring 36, under the action of the supporting spring 36, the movable baffle 32 is propped against the limited furthest end by the supporting spring 36, and the front end of the movable baffle 32 is provided with an inclined plane or an arc surface.

In addition, the auxiliary pushing driving mechanism 25 and the barrier driving mechanism 35 are generally cylinders or hydraulic cylinders.

When the pushing plate mechanism 1 pushes the plate, the pushed plate is guided and lifted from the inclined plane of the movable baffle plate 32, the plate passes through the baffle plate mechanism 3, the sensor informs the auxiliary pushing plate mechanism 2 to extend out of the pushing claw 21 for carrying out secondary pushing, the pushing plate is pushed under the combined action of the pushing plate mechanism 1 and the auxiliary pushing plate mechanism 2, and the pushed plate passes through the upper surface of the movable baffle plate 32 of the baffle plate mechanism 3; the plate moving by the main body is pushed by the push plate mechanism 1, and the auxiliary push plate mechanism 2 is mainly used for preventing the plate from falling off and carrying out secondary push plates. The baffle mechanism 3 mainly plays a role of blocking a lower layer of a non-moving plate layer, and the pushed plate must climb to pass through the baffle mechanism 3 to provide certain resistance to the passing plate. Thus, under the combined action of the baffle mechanism 3 and the push plate mechanism 1, a push plate baffle device is formed, the plate material of the push plate can pass through the baffle plate only by overcoming larger resistance, and the plate material of the passing baffle plate is prevented from falling under the action of the auxiliary push plate mechanism 2, so that the plate material passing through the baffle plate mechanism 3 is ensured not to fall off any more. The supporting force of the supporting spring 36 in the baffle mechanism is large, and the plate material of the push plate can shrink and retract only when a special large acting force is applied to the inclined surface of the movable baffle plate 32, so that the movable baffle plate 32 is ensured to be attached to the lower surface of the plate material, and a certain safety protection effect is also achieved. Such a set of pusher plate baffle devices effectively ensures reliability in pushing multiple layers of sheet material.

The push plate baffle device is mainly used for pushing multiple layers of plate stacks at one time, can push more than ten layers of plates to a conveying line at one time, has high efficiency, and can meet the requirement of high-speed operation of a production line. When the multilayer push pedal, the secondary push pedal prevents to fall the board, and the baffle can effectively prevent band plate, splint, and the reliability is high. The push plate baffle device can be used in various push plate machines, and can greatly improve the production efficiency and reduce the labor cost.

The above embodiments are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited by the above embodiments, and any modification made on the basis of the technical scheme according to the technical idea of the present invention falls within the protection scope of the present invention; the technology not related to the invention can be realized by the prior art.

Claims

1. A push plate baffle device, characterized in that: the push plate baffle device comprises a push plate mechanism (1) and a baffle mechanism (3), wherein the push plate mechanism (1) is arranged on a frame (4) through a linear motion pair (5), the push plate mechanism (1) can linearly move on the frame (4) along the arrangement direction of the linear motion pair (5) under the drive of external power, a buffer storage conveying frame (41) for receiving plates is arranged at the rear side of the tail end of the linear motion pair (5), the baffle mechanism (3) is arranged at one side, adjacent to the linear motion pair (5), of the buffer storage conveying frame (41), and a blocking surface of the baffle mechanism (3) is arranged opposite to the push plate surface of the push plate mechanism (1); the pushing plate mechanism (1) pushes a plate layer with a certain height on a plate stack between the pushing plate mechanism (1) and the baffle mechanism (3) under the drive of external power, and the plate layer is conveyed to the buffer conveying rack (41) through the top of a baffle of the baffle mechanism (3), and meanwhile, the baffle mechanism (3) can block the movement of a plate which is not pushed; the baffle mechanism (3) comprises a fixed baffle (31) and a movable baffle (32), the movable baffle (32) is arranged on the fixed baffle (31) through a supporting spring (36), the blocking surface of the movable baffle (32) is an inclined surface or an arc surface, and under the action of the supporting spring (36), the movable baffle (32) is ejected upwards by the supporting spring (36); the auxiliary push plate mechanism (1) is provided with an auxiliary push plate mechanism (2), the auxiliary push plate mechanism (2) comprises a push claw (21), a push spring (23), a lifting rod (24), an auxiliary push driving mechanism (25) and a connecting block (26), the tail end of the auxiliary push driving mechanism (25) is fixed on a supporting part of the push plate mechanism (1) through the connecting block (26), a piston rod of the auxiliary push driving mechanism (25) is connected with the lifting rod (24), and a top cross beam of the push claw (21) is pressed on the upper edge of the lifting rod (24), so that the auxiliary push driving mechanism (25) can drive the lifting rod (24) to ascend when retracting; the top beam of the pushing claw (21) is connected with the bottom of the pushing spring (23), the top of the pushing spring (23) is also fixed on a supporting part of the pushing plate mechanism (1), and under the elastic force of the pushing spring (23), the pushing claw (21) drives the lifting rod (24) to extend out and descend to the lowest position.

2. The push plate baffle device as set forth in claim 1 wherein: the upper part of the blocking surface of the baffle mechanism (3) is a curved surface or a plane with a guiding function.

3. The push plate baffle device as set forth in claim 1 wherein: the push plate mechanism (1) comprises one or more fixed push plates (12) which are sequentially arranged from top to bottom, the fixed push plates (12) are arranged on the push plate frame (11), and the upper parts of the push plate frames (11) are embedded on the linear motion pairs (5), so that the push plate frames (11) can linearly move on the frame (4) along the arrangement direction of the linear motion pairs (5) under the driving of external power.

4. A push plate baffle device according to claim 3, wherein: the push plate mechanism (1) comprises a movable push plate (13), wherein the movable push plate (13) is arranged on a fixed push plate (12) through a compression spring (14), and the movable push plate (13) can downwards extend out of the lower edge of the lowest fixed push plate (12).

5. The push plate baffle device as set forth in claim 1 wherein: the baffle mechanism (3) comprises a baffle driving mechanism (35), the baffle driving mechanism (35) is arranged on a cross beam of the frame (4) or at the front end of the buffer conveying frame (41), and the telescopic front end of the baffle driving mechanism (35) is fixed on the back of the fixed baffle (31).

6. The push plate baffle device as set forth in claim 5 wherein: the front end of a guide shaft (33) embedded in the guide seat (34) is rigidly connected with the back surface of the fixed baffle plate (31).

7. The push plate baffle device as set forth in claim 1 wherein: a blocking plate (22) is arranged on the rear side of the pushing claw (21), and the blocking plate (22) is fixedly arranged on a supporting part of the push plate mechanism (1) so as to limit the backward movement of the pushing claw (21).

8. The push plate baffle device as set forth in claim 1 wherein: the auxiliary push plate mechanism (2) comprises a plurality of pairs of push claws (21) and push springs (23) which are arranged in one-to-one correspondence, and rollers are arranged at the bottoms of the push claws (21) so that the push claws (21) can roll and move on a plate.