Empty carton horizontal conveying mechanism

Abstract

The utility model belongs to the technical field of transmission equipment, and discloses an empty carton horizontal conveying mechanism which is characterized by comprising a bottom plate, a conveying assembly, a carton stabilizing assembly, a carton pushing assembly and an adjusting assembly are fixedly installed on the surface of the bottom plate, and the carton pushing assembly comprises an air cylinder pushing claw assembly and an electric cylinder assembly. The two sets of air cylinder pushing claw assemblies are fixedly installed on the left side and the right side of the top of the moving end of the electric cylinder assembly and are symmetrically arranged with the center line of the bottom plate as the original point. The sliding rail assembly is arranged on the bottom plate so that the bottom plate can move front and back to adapt to conveying of empty cartons of different width specifications. By arranging the box stabilizing assembly, the empty paper boxes are conveyed more stably in the horizontal direction, the empty paper boxes are prevented from toppling over, and the conveying efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to transmission equipment technical field, specifically, relate to a horizontal conveying mechanism of empty carton. BACKGROUND

[0002] After the filter rod composite forming machine group enters the cutter disc and is cut into the rod segment of the prescribed length, will enter the downstream box filling mechanism and carry out the box filling, because the filter rod composite forming machine group speed is fast, needs to adopt the automatic box filling mechanism to satisfy the equipment production needs, the empty carton conveying mechanism of filter rod box filling equipment has realized the automatic conveying empty carton, the utility model patent of our office invention a box-like object conveying mechanism (patent number ZL2222125615.X) adopts the box prong on the chain of servo motor drive and carries out the conveying in the horizontal direction to empty carton, after conveying to the fixed position, empty carton is pushed into the box filling bin by the push pawl assembly of pneumatic cylinder, because the box prong sets up at the upper portion of empty carton, there is the phenomenon of empty carton during empty carton conveying process.

[0003] In order to solve the above problems, our office innovatively improves the empty carton conveying mechanism, through the machine verification, the structure is not only applicable to manual placement empty carton, but also applicable to mechanical arm automatic placement empty carton, and there is no empty carton during empty carton conveying process, improves the equipment production efficiency and capacity. UTILITY MODEL CONTENT

[0004] The utility model discloses a horizontal conveying mechanism of empty carton, which solves the technical problems of the prior art and provides a horizontal conveying mechanism of empty carton.

[0005] In one embodiment of the utility model, the stabilizing fork assembly includes a drive assembly, a driving sprocket assembly, a protective cover assembly, a stabilizing fork, a driven sprocket assembly, two first chains, and two mounting plates.

[0006] Two said mounting plates are installed side by side downward at the inner wall of the protective cover assembly, the driving sprocket assembly and the driven sprocket assembly are respectively connected between the two ends of the two mounting plates, two said first chains are arranged in parallel and are drivingly connected between the driving sprocket assembly and the driven sprocket assembly, a plurality of said stabilizing box forks are fixedly installed between the two first chains along the length direction, the driving assembly is fixedly installed on the outer wall of the protective cover assembly, and the driving sprocket assembly and the conveying assembly are fixedly installed on the top of the bottom plate.

[0007] In an embodiment of the utility model, the driven sprocket assembly structure is same with the driving sprocket assembly structure, and the protective cover assembly wraps the driving assembly, the driving sprocket assembly and the driven sprocket assembly.

[0008] In an embodiment of the utility model, the conveying assembly comprises a first bevel gear, a second bevel gear, a tension sprocket assembly, a second chain, a rear drive shaft, a bearing seat, an auxiliary driving sprocket, an auxiliary driven sprocket and a front drive shaft.

[0009] The front drive shaft and the rear drive shaft are provided with the bearing seat near the two ends, and the front drive shaft and the rear drive shaft are fixedly installed on the first end and the second end of the bottom plate through the bearing seat; the front drive shaft and the rear drive shaft are arranged in parallel; two groups of the auxiliary driven sprockets are fixedly installed near the two ends of the front drive shaft; two groups of the auxiliary driving sprockets are fixedly installed near the two ends of the rear drive shaft; the second chain is drivingly connected between the auxiliary driving sprocket and the auxiliary driven sprocket on the same side; the tension sprocket assembly is arranged below the second chain and is fixedly installed on the bottom plate through the bearing seat; the driving sprocket assembly comprises a driving shaft; the first bevel gear is fixedly installed on the bottom end of the driving shaft; the second bevel gear is engaged with one side of the first bevel gear; and the first bevel gear is fixedly installed on one end of the rear drive shaft.

[0010] In an embodiment of the utility model, the driving assembly comprises a speed reducer motor, the speed reducer motor is fixedly installed on one side of the protective cover assembly through a motor mounting bracket, a synchronous pulley is fixedly installed on the surface of the motor shaft of the speed reducer motor and the driving shaft, and a synchronous belt is drivingly connected between the two synchronous pulleys.

[0011] In an embodiment of the utility model, the electric cylinder assembly comprises a guide rail, a wing-shaped upper plate and an electric cylinder fixing plate, the electric cylinder assembly is fixedly installed on the bottom plate through the electric cylinder fixing plates installed at the two ends, a movable end at the top of the electric cylinder assembly is fixedly installed on the bottom center of the wing-shaped upper plate, and the horizontal wings on the two sides of the wing-shaped upper plate are slidingly connected to the top of the two guide rails.

[0012] In an embodiment of the utility model, the air cylinder push claw assembly includes the clamping box fork, guide shaft, air cylinder, air cylinder support,

[0013] The guide rail is fixedly installed on the left and right sides of the front end of the top of the bottom plate, the air cylinder support is fixedly installed on one side of the top end of the wing-shaped upper plate, the air cylinder is fixedly installed with the air cylinder support, the telescopic shaft of the air cylinder is fixedly installed with the clamping box fork through the air cylinder support, one end of the guide shaft is slidably connected with the air cylinder support, and the other end is fixedly installed with the clamping box fork.

[0014] In an embodiment of the utility model, the adjusting assembly includes two groups of guide rail assemblies, two groups of adjusting racks and shaft fixing plates, the two groups of guide rail assemblies are fixedly installed on the left and right sides of the bottom plate along the length direction, the shaft fixing plate is slidably connected with the bottom plate through the two groups of guide rail assemblies, the adjusting rack is fixedly installed on one end of the shaft fixing plate and slidably connected with the plate through the corresponding guide rail assembly, the middle part of the shaft fixing plate is fixedly installed with a linear bearing, the linear bearing is slidably connected with one end of the guide rod, the other end of the guide rod is fixedly installed with a fixed seat, the fixed seat is fixedly installed with the bottom plate, two fixed rings are detachably fixedly installed on the surface of the linear bearing, and the two fixed rings are located on the two sides of the shaft fixing plate.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] The utility model discloses a plurality of bevel gears and tension pulleys are arranged to realize the mechanical synchronous transmission of the conveying assembly, so that conveying is stable and reliable, the slide rail assembly is arranged on the bottom plate to realize the front and back displacement of the bottom plate to adapt to the conveying of empty paper boxes of different width specifications. The empty paper box is more stable in horizontal direction conveying through the setting stable box assembly, empty paper box is prevented from toppling and emptying, and conveying efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be briefly introduced to the drawing needed to be used in the embodiment, and should understand, the following drawings only show some embodiments of the utility model, and should not be regarded as the limitation to the scope, for ordinary skilled person in the art, under the premise of not paying the creative labor, can also obtain other related drawings according to these drawings.

[0018] Figure 1 It is the overall plane structure schematic diagram of the utility model;

[0019] Figure 2 It is the rear plane structure schematic diagram of the utility model;

[0020] Figure 3is a front end three-dimensional structure schematic view of the second angle of the utility model;

[0021] Figure 4 is a front end three-dimensional structure schematic view of the first angle of the utility model;

[0022] Figure 5 is a three-dimensional structure schematic view of the utility model in the inverted state.

[0023] Explanation of reference numerals: 1, conveying assembly;11, first bevel gear;12, second bevel gear;13, tensioning sprocket assembly;14, second chain;15, rear drive shaft;16, bearing seat;17, auxiliary driving sprocket;18, auxiliary driven sprocket;19, front drive shaft;2, bottom plate;3, stabilizing box assembly;31, driving assembly;311, speed reducer motor;312, motor mounting bracket;313, motor shaft;314, synchronous belt;32, driving sprocket assembly;321, driving shaft;33, protective cover assembly;34, stabilizing box fork;35, driven sprocket assembly;36, first chain;37, mounting plate;4, push box assembly;41, cylinder push jaw assembly;411, box clamping fork;412, guide shaft;413, cylinder;414, cylinder bracket;42, electric cylinder assembly;421, guide rail;422, fin-shaped upper plate;423, electric cylinder fixing plate;5, adjusting assembly;51, guide rail assembly;52, adjusting rack;53, shaft fixing plate;54, fixing ring;55, linear bearing;56, guide rod;57, fixing seat. DETAILED DESCRIPTION

[0024] For the purpose, technical scheme and advantages of the embodiments of the utility model, the technical scheme in the embodiments of the utility model will be described clearly and completely in the following with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0026] It should be noted that: similar signs and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0027] In the description of the utility model, it needs to understand that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model indicated or implied by the device or element with a particular orientation, constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0028] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0029] Embodiment

[0030] Referring to the drawings Figures 1-5 The utility model provides a kind of empty carton horizontal conveying mechanism, it is characterized by including bottom plate 2, bottom plate 2 surface is respectively fixedly installed with conveying assembly 1, steady box assembly 3, push box assembly 4 and adjusting assembly 5, push box assembly 4 includes cylinder claw subassembly 41 and electric cylinder subassembly 42, two sets of cylinder claw subassembly 41 are symmetrically arranged with the center line of bottom plate 2 as origin and are fixedly installed on the left and right sides of the moving end top of electric cylinder subassembly 42, and electric cylinder subassembly 42 and adjusting assembly 5 are fixedly installed on the bottom surface of bottom plate 2, push box assembly 4 is at the output end of conveying assembly 1, and conveying assembly 1 and steady box assembly 3 are driven by the same drive device.

[0031] Specifically, as shown in the drawings, the empty carton horizontal conveying mechanism, empty carton is placed on bottom plate 2 by mechanical arm, empty carton follows conveying assembly 1 on bottom plate 2 and is horizontally transmitted forward, and the control part of the cylinder claw subassembly 41 of push box assembly 4 provides action signal according to whether empty carton is detected by the sensor at the foremost end of bottom plate 2;

[0032] When no empty carton is detected, the cylinder of cylinder claw subassembly 41 is retracted backward to make the box fork 411 retract, and at the same time, electric cylinder subassembly 42 is horizontally displaced backward, and the cylinder claw subassembly 41 is horizontally moved backward to the fixed position, and the cylinder 413 of the cylinder claw subassembly 41 is extended to make the box fork 411 extend, and the empty carton is moved forward in horizontal direction following the cylinder claw subassembly 41 to the box loading bin under the clamping of the box fork 411.

[0033] In an embodiment of the utility model, further, steady box assembly 3 includes drive assembly 31, driving sprocket assembly 32, protective cover assembly 33, steady box fork 34, driven sprocket assembly 35, two first chains 36 and two mounting plates 37,

[0034] Two mounting plates 37 are installed side by side downward at the inner wall of protective cover assembly 33, driving sprocket assembly 32 and driven sprocket assembly 35 are connected respectively by bearing between the two ends of two mounting plates 37, two first chains 36 are arranged in parallel between driving sprocket assembly 32 and driven sprocket assembly 35, a plurality of steady box forks 34 are fixedly installed equidistantly along the length direction between two first chains 36, drive assembly 31 is fixedly installed on the outer wall of protective cover assembly 33, and driving sprocket assembly 32 and conveying assembly 1 are simultaneously installed, and protective cover assembly 33 is fixedly installed on the top of bottom plate 2.

[0035] In an embodiment of the utility model, further, driven sprocket assembly 35 is same in structure with driving sprocket assembly 32, and protective cover assembly 33 wraps drive assembly 31, driving sprocket assembly 32 and driven sprocket assembly 35.

[0036] Specifically, as shown in Figures 2-3 The steady box fork 34 is arranged on the front and rear sides of the empty paper box, intercepts and limits the horizontal forward conveying empty paper box, prevents the empty paper box from toppling over, and moves synchronously with the empty paper box under the driving of the drive assembly 31 through the cooperation of the driving sprocket assembly 32, the driven sprocket assembly 35 and the first chain 36.

[0037] In an embodiment of the utility model, further, conveying assembly 1 includes first bevel gear 11, second bevel gear 12, tension sprocket assembly 13, second chain 14, rear drive shaft 15, bearing seat 16, auxiliary driving sprocket 17, auxiliary driven sprocket 18 and front drive shaft 19.

[0038] The front drive shaft 19 and the rear drive shaft 15 are provided with bearing seats 16 close to the two ends, and the front drive shaft 19 and the rear drive shaft 15 are fixedly installed on the head and tail ends of the bottom plate 2 through the bearing seats 16, the front drive shaft 19 is parallel to the rear drive shaft 15, two groups of auxiliary driven sprockets 18 are fixedly installed close to the two ends of the front drive shaft 19, two groups of auxiliary driving sprockets 17 are fixedly installed close to the two ends of the rear drive shaft 15, the second chain 14 is transmissionally connected between the auxiliary driving sprocket 17 and the auxiliary driven sprocket 18 on the same side, the tension sprocket assembly 13 is close to the second chain 14 and is arranged below the second chain 14 and is fixedly installed with the bottom plate 2 through the bearing seat 16, the driving sprocket assembly 32 includes driving shaft 321, the first bevel gear 11 is fixedly installed on the bottom end of the driving shaft 321, the second bevel gear 12 is engaged on one side of the first bevel gear 11, and the first bevel gear 11 is fixedly installed on one end of the rear drive shaft 15.

[0039] In an embodiment of the utility model, further, drive assembly 31 includes reduction motor 311, reduction motor 311 is fixedly installed to the one side of protective cover assembly 33 through motor installation support 312, the surface of motor shaft 313 of reduction motor 311 and driving shaft 321 is fixedly installed with synchronous belt pulley 315, and the transmission of two synchronous belt pulleys 315 is connected with synchronous belt 314.

[0040] Specifically, as shown in Figures 2-3 The transmission of two synchronous belt pulleys 315 is connected with synchronous belt 314 driven by reduction motor 311, so as to drive driving shaft 321 to rotate, so as to drive rear drive shaft 15 to rotate through the meshing of first bevel gear 11 and second bevel gear 12, so as to realize the synchronous action of stabilizing box assembly 3 and conveying assembly 1.

[0041] In an embodiment of the utility model, further, cylinder assembly 42 includes guide rail 421, wing-shaped upper plate 422 and cylinder fixing plate 423, cylinder assembly 42 is fixedly installed with bottom plate 2 through the cylinder fixing plate 423 installed at both ends, and the moving end at the top of cylinder assembly 42 is fixedly installed with the bottom center of wing-shaped upper plate 422, and the horizontal wings on both sides of wing-shaped upper plate 422 are slidingly connected to the top of two guide rails 421.

[0042] In an embodiment of the utility model, further, cylinder push claw assembly 41 includes box clamping fork 411, guide shaft 412, cylinder 413 and cylinder bracket 414.

[0043] Guide rail 421 is fixedly installed on the left and right sides of the top front end of bottom plate 2, cylinder bracket 414 is fixedly installed on one side of the top end of wing-shaped upper plate 422, cylinder 413 is fixedly installed with cylinder bracket 414, the telescopic shaft of cylinder 413 is fixedly installed with box clamping fork 411 through cylinder bracket 414, one end of guide shaft 412 is slidingly connected with cylinder bracket 414, and the other end is fixedly installed with box clamping fork 411.

[0044] Specifically, as shown in Figure 4 The box clamping fork 411 is driven to stretch by cylinder 413, so as to clamp the empty carton through the two groups of box clamping forks 411, then wing-shaped upper plate 422 is driven to move along a straight line by cylinder assembly 42, so as to drive the two groups of cylinder push claw assemblies 41 fixedly installed at both ends to clamp the empty carton and move the paper to the box loading bin.

[0045] In an embodiment of the utility model, further, adjusting assembly 5 includes two groups of guide rail assembly 51, two groups of adjusting rack 52 and axle fixed plate 53, two groups of guide rail assembly 51 are fixedly installed at the left and right sides of bottom plate 2 along the length direction, axle fixed plate 53 is slidably connected with bottom plate 2 through two groups of guide rail assembly 51, adjusting rack 52 is fixedly installed at one end of axle fixed plate 53, and is slidably connected with plate 2 through corresponding guide rail assembly 51, the middle part of axle fixed plate 53 is fixedly installed with linear bearing 55, linear bearing 55 is slidably connected with one end of guide rod 56, the other end of guide rod 56 is fixedly installed with fixed base 57, fixed base 57 is fixedly installed with bottom plate 2, the surface of linear bearing 55 is detachably fixedly installed with two fixed rings 54, two fixed rings 54 are divided and located at the both sides of axle fixed plate 53.

[0046] Specifically, as shown in Figure 5 When the width of the paper box changes, the guide rod 56 is extended and retracted on the guide rail assembly 51 by loosening the linear bearing 55, which allows the bottom plate 2 and the adjusting rack 52 to move forward and backward relative to each other, thereby adapting to the horizontal position conveying of different specifications of empty paper boxes.

[0047] The above is only the preferred embodiment of the utility model, and is not used to limit the utility model. For those skilled in the art, the utility model can have various changes and variations. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A carton horizontal conveying mechanism, characterized by, The utility model provides a kind of box conveying device, including bottom plate (2), the bottom plate (2) surface is respectively fixedly installed with conveying assembly (1), steady box assembly (3), push box assembly (4) and adjusting assembly (5), the push box assembly (4) includes cylinder push paw assembly (41) and electric cylinder assembly (42), two set of cylinder push paw assembly (41) are fixedly installed in the mobile end top left and right sides of electric cylinder assembly (42), and symmetrically arranged with the center line of bottom plate (2) as origin, electric cylinder assembly (42) and adjusting assembly (5) are fixedly installed on the bottom surface of bottom plate (2), push box assembly (4) is at the output end of conveying assembly (1), and conveying assembly (1) and steady box assembly (3) are driven by same drive device.

2. A horizontal conveying mechanism for cartons according to claim 1, characterised in that The steady box assembly (3) includes a drive assembly (31), a driving sprocket assembly (32), a protective cover assembly (33), a steady box fork (34), a driven sprocket assembly (35), two first chains (36), and two mounting plates (37). Two mounting plates (37) are installed side by side downward on the inner wall of the protective cover assembly (33), the driving sprocket assembly (32) and the driven sprocket assembly (35) are connected by bearings between the two ends of the two mounting plates (37), two first chains (36) are arranged in parallel and are transmission connected between the driving sprocket assembly (32) and the driven sprocket assembly (35), a plurality of steady box forks (34) are fixedly installed equidistantly along the length direction between the two first chains (36), the drive assembly (31) is fixedly installed on the outer wall of the protective cover assembly (33), and the driving sprocket assembly (32) and the conveying assembly (1) are simultaneously connected, and the protective cover assembly (33) is fixedly installed on the top of the bottom plate (2).

3. A horizontal conveying mechanism for cartons according to claim 2, wherein The driven sprocket assembly (35) has the same structure as the driving sprocket assembly (32), and the protective cover assembly (33) wraps the drive assembly (31), the driving sprocket assembly (32), and the driven sprocket assembly (35).

4. A horizontal conveying mechanism for cartons according to claim 3, wherein The conveying assembly (1) includes a first bevel gear (11), a second bevel gear (12), a tension sprocket assembly (13), a second chain (14), a rear drive shaft (15), a bearing seat (16), an auxiliary driving sprocket (17), an auxiliary driven sprocket (18), and a front drive shaft (19). The front drive shaft (19) and the rear drive shaft (15) are provided with the bearing seat (16) near both ends, and the front drive shaft (19) and the rear drive shaft (15) are fixedly installed at the head and tail ends of the bottom plate (2) through the bearing seat (16), and the front drive shaft (19) is arranged in parallel with the rear drive shaft (15), two groups of the auxiliary driven sprocket (18) are fixedly installed near both ends of the front drive shaft (19), and two groups of the auxiliary driving sprocket (17) are fixedly installed near both ends of the rear drive shaft (15), the second chain (14) is transmissionally connected between the auxiliary driving sprocket (17) and the auxiliary driven sprocket (18) on the same side, the tension sprocket assembly (13) is close to the second chain (14) and is arranged below the second chain (14) and is fixedly installed with the bottom plate (2) through the bearing seat (16), the driving sprocket assembly (32) comprises a driving shaft (321), the first bevel gear (11) is fixedly installed at the bottom end of the driving shaft (321), the second bevel gear (12) is engaged on one side of the first bevel gear (11), and the first bevel gear (11) is fixedly installed at one end of the rear drive shaft (15).

5. A horizontal conveying mechanism for cartons according to claim 4, wherein The driving assembly (31) comprises a speed reducer motor (311), the speed reducer motor (311) is fixedly installed on one side of the protective cover assembly (33) through a motor mounting support (312), and the surfaces of the motor shaft (313) of the speed reducer motor (311) and the driving shaft (321) are fixedly installed with synchronous pulleys (315). The two synchronous pulleys (315) are transmissionally connected with a synchronous belt (314).

6. A horizontal carton conveying mechanism according to claim 1 wherein, The electric cylinder assembly (42) comprises guide rails (421), a wing-shaped upper plate (422) and an electric cylinder fixing plate (423), the electric cylinder assembly (42) is fixedly installed with the bottom plate (2) through the electric cylinder fixing plates (423) installed at both ends, the moving end at the top of the electric cylinder assembly (42) is fixedly installed with the bottom center of the wing-shaped upper plate (422), and the horizontal wings on the two sides of the wing-shaped upper plate (422) are slidingly connected to the tops of the two guide rails (421).

7. A horizontal conveying mechanism for cartons according to claim 6, wherein The cylinder push jaw assembly (41) comprises a clamping box fork (411), a guide shaft (412), a cylinder (413) and a cylinder support (414). The guide rails (421) are fixedly installed on the left and right sides of the top front end of the bottom plate (2), the cylinder support (414) is fixedly installed on one side of the top end of the wing-shaped upper plate (422), the cylinder (413) is fixedly installed with the cylinder support (414), the telescopic shaft of the cylinder (413) is fixedly installed with the clamping box fork (411) through the cylinder support (414), and one end of the guide shaft (412) is slidingly connected with the cylinder support (414), and the other end is fixedly installed with the clamping box fork (411).

8. A horizontal carton conveying mechanism according to claim 1 wherein, The adjusting assembly (5) comprises two groups of guide rail assemblies (51), two groups of adjusting racks (52) and a shaft fixing plate (53), the two groups of guide rail assemblies (51) are fixedly installed at the left and right sides of the bottom plate (2) in the length direction, the shaft fixing plate (53) is slidably connected with the bottom plate (2) through the two groups of guide rail assemblies (51), the adjusting rack (52) is fixedly installed at one end of the shaft fixing plate (53) and is slidably connected with the plate (2) through the corresponding guide rail assembly (51), the middle part of the shaft fixing plate (53) is fixedly installed with a linear bearing (55), the linear bearing (55) is slidably connected with one end of a guide rod (56), the other end of the guide rod (56) is fixedly installed with a fixing seat (57), the fixing seat (57) is fixedly installed with the bottom plate (2), the surface of the linear bearing (55) is detachably fixedly installed with two fixing rings (54), and the two fixing rings (54) are respectively located at the two sides of the shaft fixing plate (53).

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