CN216996490U - Plate type stepping device - Google Patents

Abstract

The utility model relates to the technical field of metal processing and conveying, in particular to a plate-type stepping device which comprises a frame, wherein a containing cavity is formed in the frame along the length direction, an upper track groove and a lower track groove are sequentially arranged in the vertical direction of the inner wall of the containing cavity, a material pushing frame is arranged in the upper track groove in a sliding manner, a mounting plate is arranged on the side surface of the material pushing frame, a slot clamping plate is arranged on the lower track groove in a sliding manner, the bottom of the slot clamping plate is connected with the frame through an oil cylinder, a plurality of grooves are formed in the upper end of the slot clamping plate along the length direction at intervals, the material pushing frame is connected with the slot clamping plate through a conversion device, the conversion device comprises a conversion plate hinged with the material pushing frame, two ends of the conversion plate are respectively hinged with two movable rods, the problem that the existing plate-type feeding machine is large in size is solved, the utility model has the problem of low efficiency, and can complete the long-stroke pushing without using a large-stroke oil cylinder, so that the equipment volume is small and simple.

Description

Plate type stepping device

[ technical field ] A method for producing a semiconductor device

The utility model relates to the technical field of metal processing and conveying, in particular to a plate type stepping device.

[ background of the utility model ]

At present, a factory mostly adopts simple shifting type or chain plate type feeding machines to feed and discharge copper bars, the simple shifting type feeding shifting structure is simple, but the feeding continuity is not good, and the chain plate type feeding machines can realize continuous feeding, but the automatic function is not good and the equipment is large in size, the processing efficiency is low, and manual guard is needed during production, so that the waste of manpower and material resources is caused.

[ Utility model ] content

The technical problem to be solved by the utility model is to provide a plate type stepping device to overcome the defects of the prior art, and solve the problems of large volume and low efficiency of the existing plate type feeding machine equipment.

In order to solve the technical problems, the utility model adopts the following technical scheme: the plate-type stepping device comprises a frame, wherein a containing cavity is formed in the frame along the length direction, an upper track groove and a lower track groove are sequentially arranged in the vertical direction of the inner wall of the containing cavity, a material pushing frame is arranged in the upper track groove in a sliding mode, a mounting plate is arranged on the side face of the material pushing frame, a clamping groove plate is arranged on the lower track groove in a sliding mode, the bottom of the clamping groove plate is connected with the frame through an oil cylinder, a plurality of grooves are formed in the upper end of the clamping groove plate along the length direction at intervals, the material pushing frame is connected with the clamping groove plate through a conversion device, the conversion device comprises a conversion plate hinged with the material pushing frame, two ends of the conversion plate are respectively hinged with two movable rods, a limiting plate is arranged between the two movable rods, an air cylinder is hinged to the center of the upper end of the conversion plate and connected with the bottom of the material pushing frame, and the air cylinder acts to drive the conversion plate to rotate so that one movable rod is inserted into the groove, the movable rod is limited by one end of the groove and the limiting plate to rotate, so that the clamping groove plate can only drive the material pushing frame to move in a single direction when moving relative to the material pushing frame.

In the plate-type stepping device, the mounting plates are arranged on two sides of the bottom of the material pushing frame, and the mounting plates are provided with accommodating spaces for accommodating the conversion devices.

In the plate-type stepping device, the mounting plate is provided with a convex shaft penetrating through the center of the conversion plate, and the conversion plate is hinged on the mounting plate through the convex shaft.

In the plate-type stepping device, shaft holes are formed in two ends of the conversion plate, a pin shaft capable of rotating in the shaft holes is arranged at the upper end of the movable rod, and the movable rod is rotatably connected in the shaft holes through the pin shaft.

In the plate-type stepping device, the two ends of the groove along the length direction of the rack are provided with the inserts, and the upper ends of the inserts are flush with the surface of the groove.

In the plate-type stepping device, a swing rod is arranged at the center of the upper end of the conversion part, the swing rod is hinged to the telescopic end of the air cylinder, and the air cylinder is connected with the bottom of the material pushing frame through a swing seat.

In the plate-type stepping device, the limiting plate is fixed on the inner wall of the mounting plate, the two sides of the upper end of the limiting plate are provided with limiting bulges for supporting the conversion plate, and the limiting bulges are provided with inclined planes which are attached to the bottom of the conversion plate when the movable rod is inserted into the groove.

In the plate-type stepping device, the upper end of the material pushing frame is provided with a push plate protruding out of the surface of the rack, and a nylon drag chain is arranged between the push plate and the rack.

In the plate-type stepping device, the side surface of the mounting plate is positioned in the upper track groove, the damping seat is screwed in the upper track groove, the upper end of the damping seat is provided with a damping head, and the upper end of the damping head is attached to the top wall of the upper track.

In the plate-type stepping device, second roller shafts are arranged in the slot plate at intervals in the length direction, two ends of each second roller shaft are rotatably connected with second rollers in rolling fit with the lower track grooves, first roller shafts are arranged in the material pushing frame at intervals in the length direction, and two ends of each first roller shaft are rotatably connected with first rollers in rolling fit with the upper track grooves.

The utility model has the beneficial effects that:

in the utility model, when the oil cylinder drives the slot plate to slide in the lower track groove, the conversion plate is driven to rotate around the hinged part of the mounting plate by matching with the air cylinder, so that the movable rod at one end of the conversion plate is inserted into the groove, when the oil cylinder extends out of the driving slot plate to move, one side of the movable rod is abutted against one end of the groove, the other side of the movable rod is limited by the limiting plate arranged on the movable side, the movable rod and the conversion plate are relatively fixed under the limitation of the limiting plate and one end of the groove, the conversion plate is connected with the material pushing frame by the air cylinder, therefore, when the oil cylinder drives the slot plate to move, the oil cylinder resets to drive the slot plate to reset, when the slot plate resets to move, the groove is driven to move, so that the other end in the groove is contacted with the movable rod, because the limiting plate and one end of the groove abutted against the movable rod are both positioned at the same side of the movable rod, when the recess extrudees the movable rod, the movable rod can be towards keeping away from the limiting plate direction and rotating, consequently when the draw-in groove board resets, insert the inside movable rod of recess and can not be restricted in the recess, and then do not take the scraping wings to reset when making the draw-in groove board reset, and when stretching out once more after the cylinder resets, then can drive recess one end and contradict with the movable rod, and then make the movable rod that inserts the recess be injectd in the recess, draw-in groove board displacement promotes the scraping wings frame and gos forward once more, and then only need single hydro-cylinder, just can accomplish the long stroke action of scraping wings, the occupation space of hydro-cylinder has been saved, the hydro-cylinder drive that need not to use the large stroke just can realize the drive of long stroke, the equipment volume has been reduced greatly, the cost is saved, the equipment operation need not artifical wait constantly, work efficiency is higher.

According to a further scheme, the mounting plates are arranged on two sides of the bottom of the material pushing frame, and the mounting plates are provided with accommodating spaces for accommodating the conversion devices. The arrangement of the accommodating space is convenient for accommodating the conversion device.

In a further scheme, a protruding shaft penetrating through the center of the conversion plate is arranged on the mounting plate, and the conversion plate is hinged to the mounting plate through the protruding shaft. The convex shaft is arranged to facilitate the rotation of the conversion plate so as to drive one of the two movable rods to be inserted into the groove, and the other movable rod is tilted to be separated from the groove.

In a further scheme, shaft holes are formed in two ends of the conversion plate, a pin shaft capable of rotating in the shaft holes is arranged at the upper end of the movable rod, and the movable rod is rotatably connected in the shaft holes through the pin shaft. The pin shaft is matched with the shaft hole so as to facilitate the circumferential rotation of the movable rod.

In a further scheme, two ends of the groove in the length direction of the rack are provided with inserts, and the upper ends of the inserts are flush with the surface of the groove. The setting of inserting is convenient for improve recess tip intensity, and the convenience is contradicted with the movable rod simultaneously.

According to a further scheme, a swing rod is arranged at the center of the upper end of the conversion piece and hinged to the telescopic end of the air cylinder, and the air cylinder is connected with the bottom of the material pushing frame through a swing seat. The pendulum rod sets up to be convenient for and is connected with the flexible end of cylinder, can extrude the pendulum rod when making the cylinder flexible, and then makes the pendulum rod drive the rotation that the conversion was tied up, and the pendulum seat can adopt the spiro union mode to install the bottom of pushing away the work or material rest, and the separation is dismantled between cylinder and the pushing away work or material rest of being convenient for.

According to a further scheme, the limiting plate is fixed on the inner wall of the mounting plate, limiting protrusions for supporting the conversion plate are arranged on two sides of the upper end of the limiting plate, and the limiting protrusions are provided with inclined planes which are attached to the bottom of the conversion plate when the movable rods are inserted into the grooves. The limiting protrusion is arranged to limit the vertical height of the movable rod for rotating the conversion plate, and the inclined surface is arranged to support the conversion plate when the conversion plate is inclined.

According to a further scheme, a push plate protruding out of the surface of the rack is arranged at the upper end of the material pushing frame, and a nylon drag chain is arranged between the push plate and the rack. The nylon tow chain is convenient for protect the electric wire or the hydraulic pressure pipeline of equipment.

Further scheme, the mounting panel side is located it has the damping seat to go up the threaded connection in the track groove, the upper end of damping seat is equipped with the damping head, the upper end of damping head and the roof laminating of last track. The damping seat and the damping head are arranged, so that the pushing frame is prevented from shaking when the upper track groove slides in the extending direction, and the sliding stability of the sliding frame in the upper track groove is improved.

According to a further scheme, second roller shafts are arranged in the clamping groove plates at intervals in the length direction, two ends of each second roller shaft are rotatably connected with second rollers in rolling fit with the lower track grooves, first roller shafts are arranged in the material pushing frame at intervals in the length direction, and two ends of each first roller shaft are rotatably connected with first rollers in rolling fit with the upper track grooves. The second roller is convenient for the card slot plate to slide in the lower track groove of the rack, and the second roller is convenient for the pushing rack to slide in the upper track groove of the rack.

These features and advantages of the present invention will be disclosed in more detail in the following detailed description and the accompanying drawings.

[ description of the drawings ]

The utility model is further described with reference to the accompanying drawings:

FIG. 1 is a cross-sectional view of an embodiment of the present invention;

FIG. 2 is an enlarged view of the structure of FIG. 1 at A in accordance with an embodiment of the present invention;

FIG. 3 is a front view of the structure of the embodiment of the present invention;

FIG. 4 is a cross-sectional view taken along plane C-C of FIG. 3 in accordance with an embodiment of the present invention.

Reference numerals are as follows:

100 frames, 110 upper track grooves and 120 lower track grooves;

200 of a material pushing frame, 211 of a first roller shaft, 202 of a first roller, 210 of a mounting plate, 220 of a convex shaft and 230 of a push plate;

300 air cylinders, 310 conversion plates, 311 swing rods, 3110 air cylinder joints, 312 movable rods, 3120 first movable rods, 3121 second movable rods, 320 bearings, 330 limiting plates and 331 limiting bulges;

400, a slot plate, 401 a second roller shaft, 402 a second roller, 410 a groove, 4101 a first insert, 4102 a second insert;

500 oil cylinders and 510 lug rings;

600 baffle plates;

700 damping mount, 710 damping head.

[ detailed description ] embodiments

The technical solutions of the embodiments of the present invention are explained and illustrated below with reference to the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present invention, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation that the first and second features are not in direct contact, but are in contact via another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1 and 4, a plate-type stepping device according to an embodiment of the present invention includes a frame 100, the frame 100 has a rectangular structure, a receiving cavity is disposed in a length direction inside the frame 100, an upper rail groove 110 and a lower rail groove are sequentially disposed in a vertical direction of the receiving cavity, the upper rail groove 110 and the lower rail groove 120 are disposed in parallel, and both are disposed along the length direction of the frame 100, a material pushing frame 200 is slidably disposed in the upper rail groove 110, a slot plate 400 is slidably disposed on the lower rail groove 120, an oil cylinder 500 is disposed at a bottom of the slot plate 400, an output direction of the oil cylinder 500 is parallel to the lower rail, one end of the oil cylinder 500 is connected to the frame 100, and the other end of the oil cylinder 500 is hinged below the slot plate 400 through an ear ring 510, such that the slot plate 400 can be driven to move by extension and contraction of the oil cylinder 500, the material pushing frame 200 is slidably disposed on the upper rail groove 110, and a material pushing plate 230 is formed at an upper end of the material pushing frame 200, when the material is placed at the upper end of the rack 100, the material is moved in the accommodating cavity through the material pushing frame 200, so that the pushing plate 230 is moved to push the material, the mounting plates 210 are arranged on the two sides, close to the inner wall of the accommodating cavity, of the bottom of the material pushing frame 200, the accommodating space for accommodating the conversion device is formed in the mounting plates 210, a plurality of grooves are formed in the upper end face of the clamping groove plate 400 at intervals along the length direction, and whether linkage between the clamping groove plate 400 and the sliding frame is realized through the conversion device or not.

In this embodiment, referring to fig. 2, the conversion device mainly includes a conversion plate 310, a hole of a protruding shaft 220 is formed in the center of the conversion plate 310, a protruding shaft 220 passing through the hole of the protruding shaft 220 is formed between two mounting plates 210, so that the conversion plate 310 can rotate around the protruding shaft 220, shaft holes are formed at two ends of the conversion plate 310, a movable rod 312 is hinged in the shaft hole, the upper end of the movable rod 312 is connected in the shaft hole through a pin shaft, a bearing 320 is disposed between the pin shaft and the shaft holes to improve the rotational lubrication degree of the two movable rods, the movable rod 312 can rotate circumferentially through the pin shaft, in a natural state, under the action of gravity, the two movable rods 312 are in a parallel state, both of which are vertically placed, a limiting plate 330 is disposed between the two movable rods 312 and on the mounting plate 210, the limiting plate 330 is used to limit the two movable rods 312 to approach relatively, even if the movable rods 312 cannot rotate towards the limiting plate 330, but only can rotate towards the direction away from the limiting plate 330, (for convenience of description, referring to fig. 2, the left movable rod 312 is a first movable rod 3120, the right movable rod 312 is a second movable rod 3121), a protruding swing rod 311 is disposed at the center of the upper end of the conversion plate, an air cylinder 300 is disposed at the bottom of the material pushing frame 200 on one horizontal side of the swing rod 311, the air cylinder 300 is bolted to the material pushing frame 200 through a swing seat, an air cylinder 300 joint 3110 is sleeved on the telescopic end of the air cylinder 300, a mounting hole is disposed in the air cylinder 300 joint 3110, the swing rod 311 is inserted into the mounting hole through a pin shaft to be hinged to the telescopic end of the air cylinder 300, so that when the air cylinder 300 is telescopic, the conversion plate 310 at the lower end of the swing rod 311 is driven to rotate around the protruding shaft 220, and then one of the first movable rod 3120 or the second movable rod 3121 at both ends of the conversion plate 310 is inserted into the groove of the groove plate 400, both ends of the groove inner wall of the groove 400 are respectively provided with inserts (for convenience of description, the insert on the left in fig. 2 is referred to as the first insert 4101 and the insert on the right of the groove is referred to as the second insert 4102).

Based on the above embodiment, how to realize the linear motion of the material pushing frame 200 when the oil cylinder 500 drives the slot plate 400 to reciprocate will be described in detail:

in this embodiment, referring to fig. 2, the material pushing frame 200 is located at the rightmost position of the slot plate 400 in the natural state, and the left and right in the following description are based on the direction shown in fig. 2), when the oil cylinder 500 extends out to drive the slot plate 400 to slide leftwards in the lower rail groove 120, the oil cylinder 500 drives the slot plate 400 to move rightwards, at this time, the air cylinder 300 is in the state shown in fig. 2, the second movable rod 3121 of the conversion plate is inserted into the groove, the whole conversion plate 310 is tilted, the slot plate 400 moves to drive the groove to move rightwards synchronously, the second insert 4102 in the groove will abut against the right side of the second movable rod 3121, and the left side of the second movable rod 3121 is resisted by the restraining plate 330, so that the second movable rod 3121 is restrained on the conversion plate and cannot rotate around the conversion plate, the slot plate 400 moves leftwards and drives the material pushing frame 200 to move leftwards through the movable rod 312, the material pushing frame 200 then pushes the material on the rack 100 through the pushing plate 230, however, because the stroke of the oil cylinder 500 is limited, when the oil cylinder 500 reaches the limit position, the oil cylinder 500 resets to drive the slot board 400 to move rightwards (at this time, the material pushing frame 200 is already located at a certain distance leftwards), when the slot board 400 moves rightwards, the first insert 4101 of the groove approaches to the second movable rod 3121, the first movable rod 3120 gradually separates from the first insert 4101, and then along with the movement of the slot board 400, although the first insert 4101 of the groove collides with the left side of the second movable rod 3121 (the first insert 4101 and the limiting plate 330 are both located at the left side of the second movable rod 3121), the right side of the first movable rod 3120 lacks a check stop, and the slot board 400 moves rightwards by pressing the second movable rod 3121 through the first insert 4101, and cannot drive the transfer plate to move, so that when the oil cylinder 500 resets, the slot board 400 resets and cannot synchronously drive the material pushing frame 200 to move, and when the oil cylinder 500 extends out again after resetting is completed, the second insert 4102 of the slot plate 400 again presses the right side of the second movable rod 3121, so that the first movable rod 3120 is limited between the limiting plate 330 and the second insert 4102, the left extension of the slot plate 400 drives the material pushing plate to advance, and the reciprocating motion of the slot plate 400 drives the material pushing plate to move linearly and in a long stroke.

In this embodiment, when the card slot plate 400 is pushed to the leftmost side of the rack 100, after the material pushing frame 200 moves on the rack 100 to the maximum pushing distance, the air cylinder 300 is started to drive the first movable rod 3120 to be inserted into the groove, at this time, the second movable rod 3121 tilts and is separated from the groove, so when the card slot plate 400 moves rightwards, the first movable rod 3120 is limited by the first insert block 4101 and the limiting plate 330, and cannot rotate around the conversion plate 310, and further the first movable rod 3120 is fixedly connected to the conversion plate, so that the card slot plate 400 moves rightwards, and similarly, when the card slot plate 400 moves leftwards, the second insert block 4102 presses the first movable rod 3120, so that the first movable rod 3120 rotates around the conversion plate 310, and the plate 400 moves without driving the material pushing frame 200 to move through the conversion plate 310.

Preferably, referring to fig. 4, a plurality of first roller shafts 211 are arranged inside the material pushing frame 200 along the length direction, two ends of each first roller shaft 211 are rotatably connected with first rollers 202 in rolling fit with the upper track grooves 110, second roller shafts 401 are arranged inside the card slot plates 400 at intervals along the length direction, and two ends of each second roller shaft are rotatably connected with second rollers 402 in sliding fit with the lower track grooves 120.

In this embodiment, referring to fig. 2, a damping seat 700 may be screwed to a side surface of the mounting plate 210, a damping head 710 is disposed at an upper end of the damping seat 700, and the damping head 710 contacts with a top wall of the upper rail groove 110, so that when the second roller 402 slides in the upper rail groove 110, the damping head 710 is used to always make the second roller 402 slide in the upper rail groove 110 in a fitting manner, thereby improving the sliding stability of the material pushing frame 200 in the upper rail groove 110, and it is conceivable that a corresponding damping seat 700 and a corresponding damping head 710 may be disposed at a side surface of the card slot plate 400 to improve the sliding stability of the card slot plate 400 in the lower rail groove 120.

In this embodiment, a through hole is formed in the center of the ear seat of the piston rod of the oil cylinder 500, and a U-shaped connecting member is arranged on the bottom side of the rack 100, and the pin shaft penetrates through the U-shaped connecting member and then is inserted into the ear seat, thereby realizing the hinge connection between the oil cylinder 500 and the rack 100.

In this embodiment, referring to fig. 3, the two ends of the frame 100 are provided with the baffle 600 to limit the movement stroke of the material pushing frame 200, and a nylon drag chain is provided between the pushing plate 230 and the frame 100 to protect the electric wire or the hydraulic pipeline of the equipment.

According to the utility model, the actions of the oil cylinder 500 and the air cylinder 300 are controlled and linked by the controller.

In this embodiment, when the conversion board drives the lifting of the movable rod, the lifting height of the corresponding movable rod 312 is limited, the two sides of the upper end of the limiting plate 330 are provided with limiting protrusions 331 for supporting the conversion board, the limiting protrusions 331 have inclined planes which are attached to the bottom of the conversion board when the movable rod is inserted into the groove, and the inclined planes are arranged to attach and support the conversion board when the conversion board is inclined.

While the present invention has been described with reference to the particular illustrative embodiments, it will be understood by those skilled in the art that the present invention may be embodied without departing from the spirit and scope of the present invention as defined by the appended claims. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.

Claims (10)

1. The plate-type stepping device is characterized by comprising a rack, wherein a containing cavity is formed in the rack along the length direction, an upper track groove and a lower track groove are sequentially arranged in the vertical direction of the inner wall of the containing cavity, a material pushing frame is arranged in the upper track groove in a sliding manner, an installation plate is arranged on the side surface of the material pushing frame, a slot clamping plate is arranged on the lower track groove in a sliding manner, the bottom of the slot clamping plate is connected with the rack through an oil cylinder, a plurality of grooves are formed in the upper end of the slot clamping plate along the length direction at intervals, the material pushing frame is connected with the slot clamping plate through a conversion device, the conversion device comprises a conversion plate hinged with the material pushing frame, two ends of the conversion plate are respectively hinged with two movable rods, a limiting plate is arranged between the two movable rods, an air cylinder is hinged at the center of the upper end of the conversion plate and connected with the bottom of the material pushing frame, the air cylinder acts to drive the conversion plate to rotate so that one movable rod is inserted into the groove, the movable rod is limited by one end of the groove and the limiting plate to rotate, so that the clamping groove plate can only drive the material pushing frame to move in a single direction when moving relative to the material pushing frame.

2. The plate-type stepping device according to claim 1, wherein the mounting plates are disposed on two sides of the bottom of the material pushing frame, and an accommodating space for accommodating the switching device is formed in the mounting plates.

3. The plate-type stepping device according to claim 1, wherein the mounting plate is provided with a protruding shaft penetrating through the center of the switching plate, and the switching plate is hinged to the mounting plate through the protruding shaft.

4. The plate-type stepping device according to claim 1, wherein the switching plate has shaft holes formed at both ends thereof, and the movable rod has a pin shaft at an upper end thereof, the pin shaft being rotatable in the shaft holes, and the movable rod being rotatably coupled in the shaft holes by the pin shaft.

5. The plate stepper of claim 1, wherein the grooves have inserts at both ends along the length of the frame, the inserts having upper ends flush with the surfaces of the grooves.

6. The plate-type stepping device according to claim 1, wherein a swing rod is arranged at the center of the upper end of the switching plate, the swing rod is hinged to the telescopic end of the air cylinder, and the air cylinder is connected with the bottom of the material pushing frame through a swing seat.

7. The plate stepping apparatus as defined in claim 1, wherein the limiting plate is fixed to an inner wall of the mounting plate, and limiting protrusions for supporting the switching plate are provided at both sides of an upper end of the limiting plate, the limiting protrusions having inclined surfaces for engaging with a bottom of the switching plate when the movable rod is inserted into the groove.

8. The plate-type stepping device according to claim 1 wherein a push plate protruding from the surface of the frame is provided at the upper end of the pusher, and a nylon drag chain is provided between the push plate and the frame.

9. The plate-type stepping device according to claim 1, wherein a damping seat is screwed into the side surface of the mounting plate in the upper rail groove, and a damping head is provided at an upper end of the damping seat, and an upper end of the damping head is attached to a top wall of the upper rail.

10. The plate-type stepping apparatus according to claim 1, wherein a second roller shaft is provided at an interval in a longitudinal direction inside the notch plate, a second roller is rotatably connected to both ends of the second roller shaft to be in rolling engagement with the lower track groove, a first roller shaft is provided at an interval in a longitudinal direction inside the pusher, and a first roller is rotatably connected to both ends of the first roller shaft to be in rolling engagement with the upper track groove.

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