CN114211280B

CN114211280B - Material rod pressing and holding mechanism

Info

Publication number: CN114211280B
Application number: CN202111501812.0A
Authority: CN
Inventors: 王俊锋; 黄春雷; 王哲
Original assignee: Guangdong Ucan Robot Technology Co Ltd
Current assignee: Guangdong Ucan Robot Technology Co Ltd
Priority date: 2021-12-09
Filing date: 2021-12-09
Publication date: 2023-01-03
Anticipated expiration: 2041-12-09
Also published as: CN114211280A

Abstract

The invention relates to the technical field of milling cutter processing, in particular to a material rod pressing and holding mechanism which comprises an upper pressing and holding arm, a lower pressing and holding arm, a hollow base and a top plate fixedly arranged above the base, wherein the upper pressing and holding arm is fixedly connected with the top plate; one end of the lower pressing and holding arm is fixedly arranged on the side of the base, and the other end of the lower pressing and holding arm is provided with a clamping groove; one end of the upper pressing arm is provided with a pressing piece, and the other end of the lower pressing arm is provided with a guide block positioned in the base; the top plate is provided with a movable channel; the top end surface of the guide block is provided with an installation part which penetrates through the movable channel and can slide along the movable channel, the installation part is fixedly connected with the upper pressure arm, and an elastic part which drives the guide block to move downwards is arranged between the top plate and the guide block; the base is also provided with a driving mechanism which drives the guide block to move upwards and drives the guide block to slide in the horizontal direction. Compared with the prior art, the material rod is pressed and held in an upper and lower clamping mode, so that the feeding process is reduced, the clamping is more convenient and faster, and the clamping time is shortened, so that the working efficiency is improved.

Description

Material rod pressing and holding mechanism

Technical Field

The invention relates to the technical field of milling cutter processing, in particular to a material rod pressing and holding mechanism.

Background

The structure of the existing milling cutter comprises a straight rod and a cutter head formed at the end part of the straight rod, the cutter head is complex in structure and various cutting edges need to be processed according to requirements, and all the existing milling cutters are manufactured by processing a material rod, wherein the material rod is specifically a cylindrical straight rod.

In practical application, a cutting edge needs to be machined at the end part of the material rod, so that a clamping mechanism for clamping the material rod and a grinding mechanism for forming the cutting edge are needed. The existing clamping mechanism generally adopts a left-right clamping mode to clamp the material rod.

The patent document CN202011376902.7 discloses a pressing mechanism for a milling cutter material rod, which structurally comprises a groove clamping piece and a conical head which are oppositely arranged in the horizontal direction, and the material rod is clamped and fixed by the groove clamping piece and the conical head in a left-right clamping manner. This kind of centre gripping mode has an drawback, just be before the centre gripping work piece, need borrow external mechanical arm or robot to snatch the stub bar, need remove the stub bar to pressing from both sides between groove spare and the conical head after snatching the stub bar, and external equipment need continuously keep the stub bar at the centre gripping station, need wait to press from both sides groove spare and conical head and carry out the centre gripping back to the stub bar, external equipment just can relieve snatching of stub bar, and is rational, when getting the material, need wait to the external equipment snatch the back to the stub bar after processing, fixture just can loosen. Therefore, the clamping mechanism has the problems of troublesome material taking at the loading, complex clamping procedure, long time consumption and low working efficiency.

Disclosure of Invention

The invention aims to provide a material rod pressing and holding mechanism which can solve the problem of complicated clamping procedures.

In order to solve the technical problems, the invention adopts the following technical scheme: the application provides a material rod pressing and holding mechanism which comprises an upper pressing and holding arm, a lower pressing and holding arm, a hollow base and a top plate fixedly installed above the base; one end of the lower pressing and holding arm is fixedly arranged on the side of the base, and the other end of the lower pressing and holding arm is provided with a clamping groove; one end of the upper pressing arm is provided with a pressing piece positioned above the clamping groove, and the other end of the upper pressing arm is provided with a guide block positioned in the base; the top plate is provided with a movable channel; the top end face of the guide block is provided with an installation part which penetrates through the movable channel and can slide along the movable channel, the installation part is fixedly connected with the upper pressure arm, the guide block can reciprocate in the vertical direction relative to the top plate, and an elastic piece for driving the guide block to move downwards is arranged between the top plate and the guide block; the base is also provided with a driving mechanism which drives the guide block to move upwards and drives the guide block to slide in the horizontal direction.

The driving mechanism comprises a sliding block which is arranged in the base and positioned below the guide block and a driver which drives the sliding block to slide in a reciprocating manner in the horizontal direction, the driver is provided with a telescopic rod which can stretch and reciprocate, the telescopic rod of the driver is fixedly connected with the sliding block, and the sliding block can slide in the horizontal direction relative to the base; the top end face of the sliding block is clung to the bottom face of the guide block, a first guide inclined face which inclines upwards is arranged on the top end face of the sliding block, and a second guide inclined face which is complementary to the first guide inclined face is arranged on the bottom face of the guide block.

The driving mechanism further comprises a limiting groove formed in the bottom surface of the guide block and a limiting column formed on the top surface of the sliding block, the limiting column is inserted into the limiting groove, and the limiting column can reciprocate in the horizontal direction along the limiting groove.

The first guide inclined plane and the second guide inclined plane are respectively provided with a first plane section, an inclined plane section and a second plane section which are sequentially connected from left to right; the second planar section is higher than the first planar section in the vertical direction.

Wherein, the pressing and holding piece is detachably arranged at the end part of the upper pressing and holding arm.

Wherein, the end part of the lower pressing arm provided with the clamping groove is detachably connected with a clamping seat, and the clamping groove is arranged on the clamping seat.

Wherein, the cross section shape of draw-in groove is the V type.

Wherein, the guide block is convex structure, and the shoulder of guide block is seted up and is supplied the male blind hole of elastic component.

The elastic piece is a pressing spring, the pressing spring is placed in the blind hole, one end of the pressing spring abuts against the bottom of the blind hole, and the other end of the pressing spring abuts against the bottom surface of the top plate.

The bottom surface of the base is fixedly connected with a vertically arranged mounting plate, the front side surface of the mounting plate is provided with a bearing, the rear side surface of the mounting plate is provided with an adjusting motor, the inner ring of the bearing is fixedly connected with the mounting plate, the output shaft of the adjusting motor penetrates out of the mounting plate, the output shaft of the adjusting motor is fixedly connected with an eccentric wheel, and the eccentric wheel is abutted against the outer ring of the bearing; the bottom surface rigid coupling of mounting panel has the dovetail seat, and the bottom surface of dovetail seat begins to have the dovetail, and the below of dovetail seat still is equipped with the mount pad, and the top face of mount pad is upwards protruding formation dovetail block, and under the assembled state, dovetail block inserts in the dovetail of dovetail seat.

The invention has the beneficial effects that:

the utility model provides a feed rod presses and holds working process of mechanism does: during blanking, the driving mechanism drives the guide block to move upwards to separate the pressing and holding piece from the clamping groove in the height direction, the elastic piece is in a compressed state at the moment, and then the driving mechanism drives the pressing and holding piece to move in the horizontal direction to stagger the pressing and holding piece and the clamping groove in the height direction, so that the pressing and holding piece is prevented from blocking external equipment to throw material rods into the clamping groove in the vertical direction, and the opening action of the pressing and holding mechanism is completed; when feeding, the external equipment puts a material rod into the clamping groove in the vertical direction, then the driving mechanism resets and drives the guide block to slide and reset in the horizontal direction, so that the pressing and holding piece is aligned with the clamping groove in the height direction, and then the elastic piece in a compressed state drives the guide block to move downwards by using the elasticity of the elastic piece, so that the pressing and holding piece moves downwards and presses and holds the material rod by matching with the clamping groove, and the closing action of the pressing and holding mechanism is realized;

compared with the prior art, the mode through centre gripping about adopting is pressed the charge bar and is held, thereby the material loading process has been reduced, the clamping is more convenient and fast, shorten the clamping time spent, thereby work efficiency has been improved, in addition, through setting up actuating mechanism, can make to press and hold the mechanism under the open mode, press and hold a stagger with the draw-in groove, thereby avoid influencing the external equipment material loading, the material loading process has further been simplified, so the mechanism is held to the pressure of this application has the structure simply, work efficiency is high, the simple swift characteristics of clamping.

Drawings

Fig. 1 is a schematic structural view of the material rod pressing mechanism in this embodiment.

Fig. 2 is an enlarged view of a point a in fig. 1.

Fig. 3 is a schematic structural view of the pressing mechanism of the present embodiment after hiding a portion of the base.

Fig. 4 is a schematic structural view of the pressing mechanism in the pressing state in the embodiment.

Fig. 5 is a schematic structural view of the holding mechanism in an open state in this embodiment.

Fig. 6 is an assembly view of the slider and the guide block in the state of being pressed in the present embodiment.

Fig. 7 is an assembly view of the slider and the guide block in the open state in the present embodiment.

Fig. 8 is an assembly view of the top plate and the guide block in a pressed state in the present embodiment.

Fig. 9 is an assembly view of the top plate and the guide block in an open state in the present embodiment.

Reference numerals are as follows: the adjustable clamping device comprises a base 1, a top plate 2, a movable passage 21, an upper pressing and holding arm 3, a pressing and holding piece 31, a lower pressing and holding arm 4, a clamping seat 40, a clamping groove 41, a driver 5, an expansion rod 51, a guide block 6, a second guide inclined surface 61, a limiting groove 62, a mounting portion 63, a sliding block 7, a first guide inclined surface 71, a limiting column 72, a pressing and holding spring 8, a mounting plate 9, a bearing 91, an adjusting motor 92, an eccentric wheel 93, a dovetail seat 94 and a mounting seat 95.

Detailed Description

In order to facilitate understanding of those skilled in the art, the present invention is further described below with reference to the following examples and the accompanying drawings, which are not intended to limit the present invention.

The specific embodiment of the material rod pressing and holding mechanism comprises an upper pressing and holding arm 3, a lower pressing and holding arm 4, a hollow base 1 and a top plate 2 fixedly installed above the base 1, as shown in fig. 1. It should be noted that the base 1 may be formed by splicing a plurality of connecting plates, and specifically, a fixed bottom plate is provided, and then four vertically arranged connecting plates are fixedly connected to the periphery of the bottom plate, so as to form a hollow base 1.

Preferably, the ratio of the heights of the upper and lower holding

arms

3 and 4 is 0.1 to 10.

In this embodiment, one end of the lower pressing arm 4 is fixedly mounted on the side of the base 1, it should be noted that, the lower pressing arm 4 may also be fixedly mounted on other parts, it is only necessary to ensure that the lower pressing arm 4 is immovable relative to the base 1, as shown in fig. 2, the other end of the lower pressing arm 4 is provided with a clamping groove 41, specifically, in order to be used for clamping bars of different specifications, the end portion of the lower pressing arm 4 provided with the clamping groove 41 may be detachably connected with a clamping seat 40, the clamping seat 40 may be detachably connected with the lower pressing arm 4 in a fastening structure or a screw fixing manner, and the clamping groove 41 is provided on the clamping seat 40, and may be used by replacing the clamping seats 40 of different specifications, thereby being applicable to pressing bars of different specifications.

Referring to fig. 2, in order to improve the pressing precision and enhance the pressing force, the cross section of the clamping groove 41 is V-shaped, but may be configured into other shapes such as U-shaped, semicircular, polygonal, and the like besides V-shaped, and may be specifically selected according to actual requirements.

In this embodiment, please refer to fig. 2, one end of the upper pressing arm 3 is provided with a pressing member 31 located above the engaging slot 41, and similarly, the pressing member 31 can be detachably mounted at the end of the upper pressing arm 3 by a screw or a snap structure, so as to quickly adjust the size of the pressing member 31 when clamping bars of different specifications. In this embodiment, the end surface of the pressing member 31 for pressing is a flat surface, and a line contact can be formed when the flat surface is in contact with the material bar, so that a sufficient pressing force can be provided to the maximum extent.

As a modification, in combination with fig. 3 to 5, the other end of the lower holding arm 4 is provided with a guide block 6 located in the base 1, and the top plate 2 is provided with a movable channel 21. Specifically, the guide block 6 is a convex structure, the top end face of the guide block 6 is provided with a mounting portion 63 which penetrates through the movable passage 21 and can slide along the movable passage 21, and the mounting portion 63 is fixedly connected with the upper pressure arm 3. In order to enable the guide block 6 to drive the upper pressing arm 3 to move upwards, so that the pressing piece 31 of the upper pressing arm 3 can be separated from the clamping seat 40 in the height direction, the guide block 6 can reciprocate in the vertical direction relative to the top plate 2, and it can be understood that a movable space exists between the shoulder part of the guide block 6 with the convex structure and the top plate 2, and the guide block 6 can move up and down under the action of external force.

In a conventional clamping mechanism, in order to enable two clamps to move towards each other, one clamp is generally fixed, and then the other clamp is provided with an air cylinder, and the air cylinder drives the clamps, so that the two clamps clamp a material rod. The traditional clamping mechanism needs to be provided with an air cylinder independently, and has the problems of high manufacturing cost, more parts, complex structure and the like. In order to solve the technical problem, in this embodiment, with reference to fig. 8 to 9, an elastic member for driving the guide block 6 to move downward is disposed between the top plate 2 and the guide block 6, in this embodiment, the elastic force of the elastic member is mainly used as a power source to drive the pressing member 31 to move toward the clamping groove 41, so that the pressing member 31 firmly presses the material rod placed in the clamping groove 41, a cylinder and other power sources requiring power connection do not need to be provided, the consumption of energy is reduced, and the volume occupied by the mechanism is reduced. Specifically, the elastic component is a pressing spring 8, because the guide block 6 in the embodiment is of a convex structure, the shoulder of the guide block 6 is provided with a blind hole for the elastic component to be inserted, the pressing spring 8 is placed in the blind hole, one end of the pressing spring 8 abuts against the bottom of the blind hole, and the other end of the pressing spring 8 abuts against the bottom surface of the top plate 2, so that the structure is convenient to disassemble and assemble, and has a long service life.

In practical application, if the pressing mechanism that opens and shuts from top to bottom is simply adopted, it has the difficult problem of material loading, because, if only will press holding piece 31 and draw-in groove 41 to separate in vertical direction (direction of height), although press holding the power of having eliminated between holding piece 31 and the draw-in groove 41, can put into draw-in groove 41 with the material stick, nevertheless because the top of draw-in groove 41 is equipped with and presses holding piece 31, consequently, can't adopt from the top down mode to drop into draw-in groove 41, can only insert the material stick into draw-in groove 41 from the horizontal direction, can cause the difficult technical problem of material loading undoubtedly like this. Therefore, with reference to fig. 6 to 7, the base 1 of the present embodiment is further provided with a driving mechanism for driving the guide block 6 to move upward and driving the guide block 6 to slide in the horizontal direction.

Specifically, referring to fig. 3 to 5, the driving mechanism includes a slider 7 installed in the base 1 and located below the guide block 6, and a driver 5 driving the slider 7 to slide reciprocally in the horizontal direction, and the driver 5 has a telescopic rod 51 capable of telescopic reciprocating motion, it should be noted that the driver 5 may be a conventional stroke motor or an air cylinder. The driver 5 can be installed outside the base 1, and it is only necessary to ensure that the driver 5 is different from the base 1, and the telescopic rod 51 of the driver 5 is inserted into the base 1 and then fixedly connected with the sliding block 7, so that the driver 5 can drive the sliding block 7 to slide in the horizontal direction relative to the base 1.

In view of the above-mentioned feeding problem, the driving mechanism of the present embodiment can drive the pressing member 31 to be separated from the slot 41 in the vertical direction, and then drive the pressing member 31 to be vertically staggered from the slot 41. Referring to fig. 6 to 7, in particular, the top end surface of the slider 7 is closely attached to the bottom surface of the guide block 6, the top end surface of the slider 7 is provided with a first inclined guide surface 71 which is inclined upward, and the bottom surface of the guide block 6 is provided with a second inclined guide surface 61 which is complementary to the first inclined guide surface 71. The driving mechanism further comprises a limiting groove 62 formed in the bottom surface of the guide block 6 and a limiting post 72 formed on the top surface of the slider 7, the limiting post 72 is inserted into the limiting groove 62, and the limiting post 72 can reciprocate in the horizontal direction along the limiting groove 62.

Referring to fig. 3 and fig. 1, a vertically arranged mounting plate 9 is fixedly connected to the bottom surface of the base 1, a bearing 91 is arranged on the front side surface of the mounting plate 9, an adjusting motor 92 is arranged on the rear side surface of the mounting plate 9, an inner ring of the bearing 91 is fixedly connected to the mounting plate 9, and an output shaft of the adjusting motor 92 penetrates through the mounting plate 9 and is located below the bearing 91. An eccentric wheel 93 is fixedly connected to an output shaft of the adjusting motor 92, and the eccentric wheel 93 is abutted against an outer ring of the bearing 91. Through setting up eccentric wheel 93 and bearing 91 can control the position of base 1 on the direction of height, it is concrete, when needs go up and down to base 1, can start adjustment motor 92, adjustment motor 92's output shaft rotates, thereby drive eccentric wheel 93 and rotate, because eccentric wheel 93 is eccentric arrangement with adjustment motor 92's output shaft, consequently, eccentric wheel 93 supports and supports bearing 91, can lead to the position of base 1 to change, thereby adjust the position of pressing the mechanism in the direction of height, thereby be applicable to more kinds of operating modes and use. In addition, in order to facilitate the adjustment of the position of the base 1 in the horizontal direction, a dovetail seat 94 is fixedly connected to the bottom surface of the mounting plate 9, a dovetail groove is formed in the bottom surface of the dovetail seat 94, a mounting seat 95 is further arranged below the dovetail seat 94, a dovetail block is formed by upward protruding of the top end surface of the mounting seat 95, and in the assembled state, the dovetail block is inserted into the dovetail groove of the dovetail seat 94, that is, the dovetail seat 94 can slide in the horizontal direction relative to the mounting seat 95, so that the position of the pressing mechanism in the horizontal direction can be adjusted, and the base is further suitable for various working conditions.

The working process of the material rod pressing and holding mechanism of the embodiment is as follows: referring to fig. 3 to 9, before blanking, the pressing member 31 is aligned with the slot 41 in the vertical direction and moves toward each other, the pressing spring 8 is in a pop-up state, the pressing member 31 is driven to press and hold the processed material rod, the telescopic rod 51 of the driver 5 is in an extended state, the second guiding inclined surface 61 of the guide block 6 is tightly attached to the first guiding inclined surface 71 of the sliding block 7, and the limit post 72 abuts against the right side surface of the limit slot 62.

During blanking, the driver 5 is started, the telescopic rod 51 of the driver 5 retracts for a certain stroke and drives the slider 7 to slide towards the left in the horizontal direction, under the matching of the first guide inclined surface 71 and the second guide inclined surface 61, the slider 7 slides towards the right relative to the guide block 6, the limiting column 72 on the slider 7 slides towards the left along the limiting groove 62, the slider 7 slides towards the left and is converted into the upward movement of the guide block 6, the pressing spring 8 is compressed, the upward movement of the guide block 6 can drive the upper pressing arm 3 fixedly arranged on the mounting part 63 to move upwards, so that the pressing piece 31 and the clamping groove 41 are separated in the height direction, and the pressing spring 8 is in a compressed state at the moment; the telescopic link 51 of driver 5 continuously contracts back, support the left side wall of spacing groove 62 when the gag lever post, the telescopic link 51 of driver 5 contracts the action, can lead slider 7 intercommunication guide block 6 and go to left slip on the horizontal direction, thereby make fixed mounting press on the installation department 63 and hold arm 3 and move towards the left, so that press and hold 31 and draw-in groove 41 and stagger on the direction of height, external equipment can be on vertical direction, the finished product material stick in draw-in groove 41 is snatched in the perpendicular whereabouts, can avoid pressing to hold 31 to obstruct external equipment and put in the material stick to draw-in groove 41 on vertical direction equally, accomplish the opening action that presses the mechanism to hold.

During feeding, an external device puts a material rod into the clamping groove 41 in the vertical direction, then the telescopic rod 51 of the driver 5 stretches out and returns towards the right, the telescopic rod 51 drives the guide block 6 to slide and return towards the right in the horizontal direction, the pressing and holding piece 31 is aligned to the clamping groove 41 in the height direction, in the sliding and returning process of the guide block 6, the elastic piece in the compression state utilizes the elastic force of the elastic piece to drive the guide block 6 to move downwards, the pressing and holding piece 31 moves downwards and is matched with the clamping groove 41 to press and hold the material rod, and the closing action of the pressing and holding mechanism is realized.

Compared with the prior art, the mode through centre gripping about adopting is pressed the charge bar and is held, thereby the material loading process has been reduced, the clamping is more convenient and fast, shorten the clamping time spent, thereby work efficiency has been improved, in addition, through setting up actuating mechanism, can make to press and hold the mechanism under the open mode, it staggers to press and hold 31 and draw-in groove 41, thereby avoid influencing the external equipment material loading, the material loading process has further been simplified, so the mechanism is held to pressure of this application has the structure simply, work efficiency is high, the simple swift characteristics of clamping.

In the present embodiment, the first guiding inclined surface 71 and the second guiding inclined surface 61 are respectively provided with a first plane section, an inclined surface section and a second plane section which are sequentially connected from left to right; the second planar section is higher than the first planar section in the vertical direction. Through setting up first planar segment and second planar segment, make press hold the mechanism and can both keep pressing the distance between holding arm 3 and the lower pressure arm 4 under pressing the state of holding and opening state, can play and avoid unusual closure or press and hold insecure problem.

All the technical features in the embodiment can be freely combined according to actual needs.

The above embodiments are preferred implementations of the present invention, and besides, the present invention can be implemented in other ways, and any obvious substitutions without departing from the concept of the present invention are within the protection scope of the present invention.

Claims

1. A material rod pressing and holding mechanism is characterized by comprising an upper pressing and holding arm, a lower pressing and holding arm, a hollow base and a top plate fixedly arranged above the base;

one end of the lower pressing and holding arm is fixedly arranged on the side of the base, and the other end of the lower pressing and holding arm is provided with a clamping groove;

one end of the upper pressing arm is provided with a pressing piece positioned above the clamping groove, and the end face of the pressing piece for pressing is a plane;

the other end of the upper pressing arm is provided with a guide block positioned in the base;

the top plate is provided with a movable channel;

the top end face of the guide block is provided with an installation part which penetrates through the movable channel and can slide along the movable channel, the installation part is fixedly connected with the upper pressing and holding arm, the guide block can reciprocate in the vertical direction relative to the top plate, and an elastic piece for driving the guide block to move downwards is arranged between the top plate and the guide block;

the base is also provided with a driving mechanism which drives the guide block to move upwards and drives the guide block to slide in the horizontal direction; the driving mechanism comprises a sliding block which is arranged in the base and positioned below the guide block and a driver which drives the sliding block to slide in a reciprocating manner in the horizontal direction, the driver is provided with a telescopic rod which can stretch and reciprocate, the telescopic rod of the driver is fixedly connected with the sliding block, and the sliding block can slide in the horizontal direction relative to the base; the top end surface of the sliding block is tightly attached to the bottom surface of the guide block, a first guide inclined surface which is inclined upwards is arranged on the top end surface of the sliding block, and a second guide inclined surface which is complementary to the first guide inclined surface is arranged on the bottom surface of the guide block; the driving mechanism further comprises a limiting groove formed in the bottom surface of the guide block and a limiting column formed on the top surface of the sliding block, the limiting column is inserted into the limiting groove, and the limiting column can move in a reciprocating mode in the horizontal direction along the limiting groove.

2. The material rod pressing and holding mechanism according to claim 1, wherein: the first guide inclined plane and the second guide inclined plane are respectively provided with a first plane section, an inclined plane section and a second plane section which are sequentially connected from left to right; the second planar segment is higher than the first planar segment in the vertical direction.

3. The material rod pressing and holding mechanism according to claim 1, characterized in that: the pressing piece is detachably arranged at the end part of the upper pressing arm.

4. The material rod pressing and holding mechanism according to claim 1, wherein: the end part of the lower pressing arm provided with the clamping groove is detachably connected with a clamping seat, and the clamping groove is formed in the clamping seat.

5. A rod holding mechanism according to claim 1 or 3, wherein: the cross section of the clamping groove is V-shaped.

6. The material rod pressing and holding mechanism according to claim 1, characterized in that: the guide block is of a convex structure, and a blind hole for inserting the elastic piece is formed in the shoulder of the guide block.

7. The material rod pressing and holding mechanism according to claim 6, wherein: the elastic piece is a pressing spring, the pressing spring is placed in the blind hole, one end of the pressing spring abuts against the bottom of the blind hole, and the other end of the pressing spring abuts against the bottom surface of the top plate.

8. The material rod pressing and holding mechanism according to claim 1, characterized in that: the bottom surface of the base is fixedly connected with a vertically arranged mounting plate, the front side surface of the mounting plate is provided with a bearing, the rear side surface of the mounting plate is provided with an adjusting motor, an inner ring of the bearing is fixedly connected with the mounting plate, an output shaft of the adjusting motor penetrates out of the mounting plate, an output shaft of the adjusting motor is fixedly connected with an eccentric wheel, and the eccentric wheel is abutted against an outer ring of the bearing;

the bottom surface rigid coupling of mounting panel has the dovetail, the dovetail has been seted up to the bottom surface of dovetail, the below of dovetail still is equipped with the mount pad, the top face of mount pad is the protrusion upwards and is formed the dovetail piece, under the assembled state, the dovetail piece inserts in the dovetail of dovetail.