CN211162405U

CN211162405U - Rotary positioning device

Info

Publication number: CN211162405U
Application number: CN201921866984.6U
Authority: CN
Inventors: 郭飞
Original assignee: Suzhou Webest Intelligence Technology Co ltd
Current assignee: Suzhou Webest Intelligence Technology Co ltd
Priority date: 2019-11-01
Filing date: 2019-11-01
Publication date: 2020-08-04
Anticipated expiration: 2029-11-01

Abstract

The utility model relates to a rotary positioning device, which comprises a rotary plate, a rotary driving device, a transmission device and a positioning component; the rotating plate comprises a left rotating plate and a right rotating plate; the positioning assembly is arranged at one end of the rotating plate and comprises a sliding plate, a positioning wheel and a positioning clamping plate; the sliding plate can move left and right relative to the rotating plate; the positioning wheel is fixed on the outer side of the sliding plate, a groove is formed in the positioning wheel, the positioning clamping plate is fixed on the outer side of the rotating plate, and a protrusion matched with the groove is formed in the positioning clamping plate; the utility model discloses can with carving board rotational positioning, with the synchronous upset of transmission track and carving board, realize turning over the two-sided glyptic function of carving board, need not the manual work and turn over the board, reduce the human cost, the flexible operation, convenient to use, accurate control improves machining efficiency and finished product quality.

Description

Rotary positioning device

Technical Field

The utility model belongs to the technical field of engraver machine tool part technique and specifically relates to a rotary positioning device.

Background

The laser engraving machine is advanced equipment for engraving materials to be engraved by utilizing laser, is different from a mechanical engraving machine and a manual engraving mode in the middle of 80 years, and is based on the principle that the laser engraving machine utilizes the interaction of the laser and the materials, laser beams are emitted to the materials to be machined after passing through a light guide focusing system, the specified range of the materials is removed, and the materials at the positions which are not irradiated by the laser are kept as original shapes.

Compared with the traditional manual carving mode, the laser carving can achieve a fine carving effect which is not inferior to the technological level of manual carving. The laser engraving machine has the characteristics of high processing speed, high precision, no mechanical force, no deformation of processing materials, small damage of the materials and the like, and has wider application range, higher engraving precision and quicker engraving speed.

Laser engraving machine is mostly the single face sculpture, when needs two-sided sculpture, adopts earlier the sculpture one side more, carves the mode of another side again, needs the panel transmission engraver of the good one side of carving, and the board is advanced in the turn-over again, carries out the secondary sculpture, leads to machining efficiency low, and the human cost is high, and influences the sculpture precision easily, reduces finished product quality.

For example, chinese patent CN207577682U discloses a laser engraving machine, which comprises a bottom plate, four side plates, four corner code members, four first aluminum profiles, four second aluminum profiles, a driving assembly, and a laser engraving head; the safety laser engraving machine is rectangular, the bottom plate and the side plates enclose an inner hollow structure, and the first aluminum profile and the second aluminum profile are located in the inner hollow structure; the drive assembly is arranged in the inner hollow structure, and the laser engraving head is arranged on the drive assembly.

Chinese patent CN207577681U discloses a laser engraving machine, which comprises a bottom plate, four side plates, four corner code pieces, four first aluminum profiles, four second aluminum profiles, a top plate, a driving assembly and a laser engraving head; the laser engraving machine is rectangular, the bottom plate and the side plates form an internal hollow structure in a surrounding mode, and the top plate is arranged on the top surface of the laser engraving machine in a shape matched mode; the drive assembly is arranged in the inner hollow structure, and the laser engraving head is arranged on the drive assembly.

Sculpture transmission device in the above-mentioned patent is the slide rail transmission, only is applicable to the transmission demand of single face engraver, is not suitable for two-sided sculpture, when needs two-sided sculpture, needs the manual work to turn over the board, and machining efficiency is limited.

Therefore, how to provide a rotational positioning device to the realization is applied to the laser engraving machine to the rotational positioning of carving board, realizes the two-sided sculpture to the carving board, easy operation, convenient to use, and machining efficiency is high, reduces the human cost, improves finished product quality, is the technical problem that technical staff in the field had a urgent need to solve at present.

SUMMERY OF THE UTILITY MODEL

In view of this, the purpose of this application is to provide a rotational positioning device to realize the rotational positioning to the carving board, be applied to laser engraving machine, realize the two-sided sculpture to the carving board, easy operation, convenient to use, machining efficiency is high, reduces the human cost, improves finished product quality.

In order to achieve the above object, the present application provides the following technical solutions.

A rotary positioning device comprises a rotary plate, a rotary driving device, a transmission device and a positioning assembly;

the rotating plate comprises a left rotating plate and a right rotating plate;

the positioning assembly is arranged at one end of the rotating plate and comprises a sliding plate, a positioning wheel and a positioning clamping plate;

the sliding plate can move left and right relative to the rotating plate;

the positioning wheel is fixed on the outer side of the sliding plate, a groove is formed in the positioning wheel, the positioning clamping plate is fixed on the outer side of the rotating plate, and a protrusion matched with the groove is formed in the positioning clamping plate.

Preferably, the rotary driving device comprises a rotary driving motor, a linkage shaft, a driving wheel, a left rotary roller and a right rotary roller;

the driving wheels are located on two sides of the linkage shaft and are in transmission connection through belts, and the left rotating roller and the right rotating roller are fixedly connected with the left rotating plate and the right rotating plate respectively.

Preferably, the positioning assembly further comprises a positioning driving cylinder, and the positioning driving cylinder can drive the sliding plate to move left and right;

the positioning wheel is fixed on the outer side of the sliding plate through a fixing rod, one end of the fixing rod is connected with a cap, the other end of the fixing rod is provided with threads, and the fixing rod is fixed on the sliding plate through a nut.

Preferably, the positioning wheel comprises an upper positioning wheel and a lower positioning wheel, and the upper positioning wheel and the lower positioning wheel are aligned to be arranged at the upper end and the lower end of the positioning clamping plate.

Preferably, the left rotating plate and the right rotating plate are respectively fixed on the left bracket and the right bracket through bearings; the positioning driving cylinder is fixed on the left support or the right support through a connecting plate;

the inner side of the sliding plate is provided with a sliding block, and the left support and the right support are provided with tracks matched with the sliding block, so that the sliding plate moves left and right relative to the supports.

Preferably, the number of the positioning assemblies is 2, and each group is respectively arranged at two ends of the left rotating plate or the right rotating plate.

Preferably, the transmission device is arranged on the rotating plate and comprises a transmission track and a transmission driving motor, the transmission track comprises 2 transmission belts, and the 2 transmission belts are respectively arranged on two sides of the side edge of the engraving plate from top to bottom.

Preferably, a driving wheel and a driven wheel are respectively arranged at two ends of each conveying belt, and the driving wheel penetrates through the rotating plate;

the transmission driving motor is arranged at one end of the left rotating plate or the right rotating plate and is in transmission connection with the driving wheel through a gear.

Preferably, the device further comprises a clamping device, wherein the clamping device comprises a clamping plate, a moving plate and a clamping driving cylinder;

the clamping plate is arranged on the inner side of the rotating plate and comprises an upper clamping plate and a lower clamping plate;

the movable plate is arranged on the outer side of the rotating plate and comprises an upper movable plate and a lower movable plate which are fixedly connected with the upper clamping plate and the lower clamping plate respectively through connecting rods;

the clamping driving cylinder comprises an upper clamping driving cylinder and a lower clamping driving cylinder, the upper clamping driving cylinder and the lower clamping driving cylinder respectively drive the upper moving plate and the lower moving plate to move up and down, and meanwhile, the upper clamping plate and the lower clamping plate are driven to move up and down, so that the engraving plate is clamped and fixed.

The utility model discloses the beneficial technological effect who obtains:

1) the utility model solves the problems that the transmission device of the laser engraving machine in the prior art is only suitable for single-side engraving and needs manual plate turning during double-side engraving, can rotationally position the engraving plate, synchronously turn the transmission track and the engraving plate, realize the function of double-side engraving of the engraving plate, does not need manual plate turning, reduces the labor cost, has flexible operation, convenient use and accurate control, and improves the processing efficiency and the finished product quality;

2) the utility model discloses well locating component includes slide plate, location driving cylinder, locating wheel, location cardboard, and location driving cylinder drives the slide plate and moves about, and then drives the locating wheel and moves about, and upper and lower locating wheel is fixed the rotor plate through fixed location cardboard, prevents that the rotatory back rotor plate luffing motion from influencing the sculpture precision;

3) the utility model discloses well rotary driving device includes rotary driving motor, universal driving shaft, drive wheel, left-hand rotation roller and dextrorotation roller, and the universal driving shaft drives the drive wheel rotation of both sides, and the drive wheel drives left-hand rotation roller, dextrorotation roller and rotates to realize the synchronous revolution of rotor plate, dextrorotation board, realize the upper and lower upset of carving board promptly, avoid the manual work to turn over the board, reduce the human cost.

The foregoing description is only an overview of the technical solutions of the present application, so that the technical means of the present application can be more clearly understood and the present application can be implemented according to the content of the description, and in order to make the above and other objects, features and advantages of the present application more clearly understood, the following detailed description is made with reference to the preferred embodiments of the present application and the accompanying drawings.

The above and other objects, advantages and features of the present application will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a schematic structural diagram of a rotational positioning apparatus according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of a rotational positioning apparatus according to an embodiment of the present disclosure;

FIG. 3 is a first schematic view of a positioning assembly according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of a positioning assembly according to an embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of a transmission device according to an embodiment of the disclosure;

fig. 6 is a schematic structural diagram of a clamping device according to an embodiment of the disclosure.

In the above drawings: 101. a left rotating plate; 102. a right rotating plate; 2. a positioning assembly; 201. a slide plate; 202. positioning wheels; 203. positioning a clamping plate; 204. a groove; 205. a protrusion; 206. positioning a driving cylinder; 207. fixing the rod; 208. a connecting plate; 209. a slider; 210. a track; 3. a rotation driving device; 301. a rotary drive motor; 302. a linkage shaft; 303. a left rotating roller; 304. a right rotating roller; 305. a first drive pulley; 306. a second transmission wheel; 307. a third transmission wheel; 308. a fourth transmission wheel; 309. a fifth transmission wheel; 310. a transition wheel; 4. a transmission device; 401. a transfer belt; 402. a transmission drive motor; 403. a driven wheel; 404. a driving wheel; 5. engraving a plate; 601. a left bracket, 602, a right bracket; 7. a clamping device; 701. a clamping plate; 702. moving the plate; 703. clamping the driving cylinder; 8. and (6) fixing the assembly.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. In the following description, specific details such as specific configurations and components are provided only to help the embodiments of the present application be fully understood. Accordingly, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, descriptions of well-known functions and constructions are omitted in the embodiments for clarity and conciseness.

Further, the present application may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.

The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, B exists alone, and A and B exist at the same time, and the term "/and" is used herein to describe another association object relationship, which means that two relationships may exist, for example, A/and B, may mean: a alone, and both a and B alone, and further, the character "/" in this document generally means that the former and latter associated objects are in an "or" relationship.

The term "at least one" herein is merely an association relationship describing an associated object, and means that there may be three relationships, for example, at least one of a and B, may mean: a exists alone, A and B exist simultaneously, and B exists alone.

It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion.

Example 1

As shown in fig. 1 and 2, a rotary positioning device comprises a rotary plate, a rotary driving device 3, a transmission device 4 and a positioning assembly 2.

The rotating plate comprises a left rotating plate 101 and a right rotating plate 102, and the left rotating plate 101 and the right rotating plate 102 are respectively fixed on a left bracket 601 and a right bracket 602 through bearings.

Referring to fig. 1 and 2, the rotation driving device 3 includes a rotation driving motor 301, a linkage shaft 302, a driving wheel, a left rotation roller 303 and a right rotation roller 304.

The driving wheels are located on two sides of the linkage shaft 302 and are in transmission connection through belts, the left rotating roller 303 and the right rotating roller 304 are fixedly connected with the left rotating plate 101 and the right rotating plate 102 respectively, and the rotating driving motor 301 drives the left rotating roller 303 and the right rotating roller 304 to rotate synchronously through the linkage shaft 302 and the driving wheels, so that the left rotating plate 101 and the right rotating plate 102 rotate synchronously.

As shown in fig. 3, the positioning assembly 2 is disposed at one end of the rotating plate, and the positioning assembly 2 includes a sliding plate 201, a positioning wheel 202, and a positioning clamping plate 203.

The sliding plate 201 is L-shaped and can move left and right relative to the rotating plate.

As shown in fig. 4, the positioning wheel 202 is fixed on the outer side of the sliding plate 201, a groove 204 is formed in the positioning wheel 202, the positioning clamping plate 203 is fixed on the outer side of the rotating plate, and a protrusion 205 matched with the groove 204 is formed in the positioning clamping plate 203, so that the positioning wheel 202 and the positioning clamping plate 203 are fixedly connected in an overlapping manner, and the rotating plate is prevented from swinging up and down after rotating.

Preferably, the upper end and the lower end of the positioning clamping plate 203 are both provided with protrusions 205 matched with the grooves 204.

The positioning wheel 202 is fixed on the outer side of the sliding plate 201 through a fixing rod 207, one end of the fixing rod 207 is connected with a cap, the other end of the fixing rod 207 is provided with threads, and the fixing rod 207 is fixed on the sliding plate 201 through a nut.

Preferably, the positioning clamping plate 203 is fixed on the outer side of the rotating plate through a fixing block, so that the rotating plate is prevented from being influenced by the fact that the rotating plate is too close to the positioning assembly 2.

Preferably, the positioning assembly 2 further comprises a positioning driving cylinder 206, and the positioning driving cylinder 206 can drive the sliding plate 201 to move left and right.

Referring to fig. 3, the positioning driving cylinder 206 is fixed to the left bracket 601 or the right bracket 602 through a connecting plate 208.

Preferably, the positioning wheels 202 comprise an upper positioning wheel 202 and a lower positioning wheel 202, and the upper positioning wheel 202 and the lower positioning wheel 202 are aligned and arranged at the upper end and the lower end of the positioning clamping plate 203, so as to further prevent the rotating plate from swinging up and down after rotating.

The positioning driving cylinder 206 is fixed on the left bracket 601 or the right bracket 602 through a connecting plate 208.

Referring to fig. 3, a sliding block 209 is disposed on the inner side of the sliding plate 201, and a track 210 matched with the sliding block 209 is disposed on the left bracket 601 and the right bracket 602, so that the sliding plate 201 moves left and right relative to the brackets and is used for supporting the sliding plate 201.

Preferably, the number of the positioning assemblies 2 is 2, and each group is respectively arranged at two ends of the left rotating plate 101 or the right rotating plate 102.

As shown in fig. 5, the conveying device 4 is disposed on the rotating plate, the conveying device 4 includes a conveying track 210 and a conveying driving motor 402, the conveying track 210 includes 2 conveying belts 401, and the 2 conveying belts 401 are respectively disposed on two sides of the side edge of the engraving plate 5.

Two ends of each conveying belt 401 are respectively provided with a driving wheel 404 and a driven wheel 403, and the driving wheel 404 penetrates through the rotating plate.

The transmission driving motor 402 is disposed at one end of the left rotating plate 101 or the right rotating plate 102, and is in transmission connection with the driving wheel 404 through a gear.

Preferably, the driving wheel 404 is connected with a rotating shaft, the rotating shaft penetrates through the rotating plate, and the other end of the rotating shaft is connected with a rotating shaft gear, and the rotating shaft gear is in transmission connection with a motor gear connected with the transmission driving motor 402.

Preferably, the driving wheels 404 on the upper and lower 2 conveying belts 401 are respectively arranged in opposite directions, so that after the rotating plate rotates 180 degrees, the driving wheel 404 on the other side is also in transmission connection with the conveying driving motor 402, so that the transmission of the conveying belts 401 is realized, and the engraving plate 5 is driven to be conveyed.

As shown in fig. 6, the device further comprises a clamping device 7, wherein the clamping device 7 comprises a clamping plate 701, a moving plate 702 and a clamping driving cylinder 703.

The clamping plate 701 is disposed inside the rotating plate, the clamping plate 701 includes an upper clamping plate 701 and a lower clamping plate 701, and the upper clamping plate 701 and the lower clamping plate 701 are disposed in the upper conveying belt 401 and the lower conveying belt 401, respectively.

The moving plate 702 is arranged on the outer side of the rotating plate, the moving plate 702 comprises an upper moving plate 702 and a lower moving plate 702, and the upper moving plate 702 and the lower moving plate 702 are respectively and fixedly connected with the upper clamping plate 701 and the lower clamping plate 701 through connecting rods.

The clamping driving cylinder 703 comprises an upper clamping driving cylinder 703 and a lower clamping driving cylinder 703, and the upper clamping driving cylinder 703 and the lower clamping driving cylinder 703 respectively drive the upper moving plate 702 and the lower moving plate 702 to move up and down and simultaneously drive the upper clamping plate 701 and the lower clamping plate 701 to move up and down so as to clamp or release the engraving plate 5.

Example 2

Based on the above embodiment 1, the same parts are not repeated, and the difference is that, referring to fig. 1 and 2, the driving wheels include a first driving wheel 305, a second driving wheel 306, a third driving wheel 307, a fourth driving wheel 308, and a fifth driving wheel 309.

The first driving wheel 305 is in transmission connection with the rotary driving motor 301 through a belt, and the first driving wheel 305 is fixed at one end of the linkage shaft 302 and drives the linkage shaft 302 to rotate.

The second driving wheel 306 and the third driving wheel 307 are respectively fixed at two ends of the linkage shaft 302, and the linkage shaft 302 drives the second driving wheel 306 and the third driving wheel 307 to rotate; the second driving wheel 306 and the third driving wheel 307 are respectively connected with the fourth driving wheel 308 and the fifth driving wheel 309 through belt transmission.

The fourth driving wheel 308 and the fifth driving wheel 309 are fixedly connected with the left rotating roller 303 and the right rotating roller 304 respectively.

Two ends of the linkage shaft 302 are respectively fixed below a left support 601 and a right support 602 through bearings, and the left support 601 and the right support 602 are respectively arranged below the left turning plate and the right turning plate.

Preferably, the rotary driving device 3 further comprises two transition wheels 310, and the two transition wheels 310 are respectively fixed on the side surfaces of the left bracket 601 and the right bracket 602 through a fixing assembly 8 and respectively used for pressing the belts on one sides of the second driving wheel 306, the fourth driving wheel 308, the third driving wheel 307 and the fifth driving wheel 309.

Preferably, the fixing assembly 8 comprises a sliding plate 201, a fixing plate and a bolt, wherein the fixing plate is arranged outside the bracket, and the central shaft of the transition wheel 310 is fixed at one end of the fixing plate; be provided with the notch in the middle of the board 201 that slides, the bolt is with board 201 and fixed plate fixed connection that slides, just the board 201 that slides can change left right position through the bolt rotation, and then realizes adjusting the elasticity of belt, improve equipment operation's stability.

The above description is only a preferred embodiment of the present invention, and it is not intended to limit the scope of the present invention, and various modifications and changes may be made by those skilled in the art. All changes, modifications, substitutions, integrations and parameter changes to the embodiments, which are within the spirit and principle of the invention, can be made by conventional substitution or can realize the same function without departing from the principle and spirit of the invention, and all fall into the protection scope of the invention.

Claims

1. A rotary positioning device is characterized by comprising a rotating plate, a rotary driving device (3), a transmission device (4) and a positioning assembly (2);

the rotating plate comprises a left rotating plate (101) and a right rotating plate (102);

the positioning assembly (2) is arranged at one end of the rotating plate, and the positioning assembly (2) comprises a sliding plate (201), a positioning wheel (202) and a positioning clamping plate (203);

the sliding plate (201) can move left and right relative to the rotating plate;

the positioning wheel (202) is fixed on the outer side of the sliding plate (201), a groove (204) is formed in the positioning wheel (202), the positioning clamping plate (203) is fixed on the outer side of the rotating plate, and a protrusion (205) matched with the groove (204) is formed in the positioning clamping plate (203).

2. The rotary positioning device according to claim 1, characterized in that the rotary drive device (3) comprises a rotary drive motor (301), a linkage shaft (302), a transmission wheel, a left rotary roller (303) and a right rotary roller (304);

the transmission wheels are located on two sides of the linkage shaft (302), the transmission wheels are in transmission connection through belts, and the left rotating roller (303) and the right rotating roller (304) are fixedly connected with the left rotating plate (101) and the right rotating plate (102) respectively.

3. The rotary positioning device according to claim 2, characterized in that the positioning assembly (2) further comprises a positioning driving cylinder (206), wherein the positioning driving cylinder (206) can drive the sliding plate (201) to move left and right;

the positioning wheel (202) is fixed on the outer side of the sliding plate (201) through a fixing rod (207), one end of the fixing rod (207) is connected with a cap, the other end of the fixing rod (207) is provided with threads, and the fixing rod (207) is fixed on the sliding plate (201) through a nut.

4. The rotary positioning device according to claim 3, wherein the positioning wheel (202) comprises an upper positioning wheel (202) and a lower positioning wheel (202), and the upper positioning wheel (202) and the lower positioning wheel (202) are aligned and arranged at the upper end and the lower end of the positioning clamping plate (203).

5. The rotary positioning device according to claim 3, wherein the left rotating plate (101) and the right rotating plate (102) are fixed on a left bracket (601) and a right bracket (602) respectively through bearings; the positioning driving cylinder (206) is fixed on the left bracket (601) or the right bracket (602) through a connecting plate (208);

the inner side of the sliding plate (201) is provided with a sliding block (209), and the left support (601) and the right support (602) are provided with a track (210) matched with the sliding block (209), so that the sliding plate (201) moves left and right relative to the supports.

6. The rotary positioning device according to any of claims 1 to 5, wherein the number of positioning assemblies (2) is 2 groups, each group being respectively disposed at both ends of the left rotary plate (101) or the right rotary plate (102).

7. The rotary positioning device according to any of claims 1-5, wherein the conveying device (4) is arranged on the rotating plate, the conveying device (4) comprises a conveying track (210) and a conveying driving motor (402), the conveying track (210) comprises 2 conveying belts (401), and the 2 conveying belts (401) are respectively arranged on two sides of the side edge of the engraving plate (5) up and down.

8. The rotary positioning device according to claim 7, wherein both ends of each of the conveying belts (401) are respectively provided with a driving wheel (404) and a driven wheel (403), the driving wheel (404) penetrates through the rotating plate;

the transmission driving motor (402) is arranged at one end of the left rotating plate (101) or the right rotating plate (102) and is in transmission connection with the driving wheel (404) through a gear.

9. The rotary positioning device according to any of claims 1 to 5, further comprising a clamping device (7), wherein the clamping device (7) comprises a clamping plate (701), a moving plate (702), a clamping driving cylinder (703);

the clamping plate (701) is arranged at the inner side of the rotating plate, and the clamping plate (701) comprises an upper clamping plate (701) and a lower clamping plate (701);

the moving plate (702) is arranged on the outer side of the rotating plate, the moving plate (702) comprises an upper moving plate (702) and a lower moving plate (702), and the upper moving plate (702) and the lower moving plate (702) are respectively and fixedly connected with the upper clamping plate (701) and the lower clamping plate (701) through connecting rods;

the clamping driving cylinder (703) comprises an upper clamping driving cylinder (703) and a lower clamping driving cylinder (703), the upper clamping driving cylinder (703) and the lower clamping driving cylinder (703) respectively drive the upper moving plate (702) and the lower moving plate (702) to move up and down, and simultaneously drive the upper clamping plate (701) and the lower clamping plate (701) to move up and down, so that the engraving plate (5) is clamped and fixed.