CN220902104U - Positioning device for machining precise metal piece - Google Patents

Abstract

The utility model relates to the technical field of metal piece processing, in particular to a positioning device for precise metal piece processing. According to the utility model, a plurality of misaligned steel plates are stacked on the backing plate, the electric push rod is started to drive the plurality of guide rods to synchronously move through the push plate, the plurality of guide rods drive any corresponding L-shaped frame and adjacent corresponding L-shaped frames to move at the same distance through the adjacent connecting rods, the corresponding two L-shaped frames move to the two ends of each steel plate, the driving motor is started to drive the two sliding blocks to move in opposite directions through the screw rod, the two abutting rods abut against any two corresponding L-shaped frames to oppositely move so as to clamp the adjacent steel plates, and the guide rods are controlled to move so that the plurality of steel plates are driven to scatter by the adjacent L-shaped frames, so that the plurality of steel plates can be automatically aligned, the plurality of steel plates are separated, and a user can typeset the steel plates conveniently.

Description

Positioning device for machining precise metal piece

Technical Field

The utility model relates to the technical field of metal piece processing, in particular to a positioning device for precise metal piece processing.

Background

When carrying out some accurate metalwork processing, can utilize many industrial equipments, more common have automatic line cutting machine, be equipped with water tank and cutting mechanism on the automatic line cutting machine, and be equipped with the molybdenum wire on the cutting mechanism, the effect that corrodes the place that needs to cut to the work piece through molybdenum wire discharge, thereby accomplish the cutting process for the work piece, and the molybdenum wire of general line cutting machine is mostly vertical arrangement, when carrying out multiplex spare cutting, need use personnel to carry out equilong cutting with the metal material, then typesetting a plurality of steel sheets, just can let the line cutting machine carry out cutting operation, use personnel need keep a plurality of steel sheets to align at first, then use personnel need fix a plurality of steel sheets under the state that keeps aligning, the fixed process is comparatively inconvenient, and can make a plurality of steel sheets alignment precision relatively poor when using personnel manual typesetting, cause processing error great, comparatively inconvenience.

Disclosure of utility model

In order to overcome the technical problems, the utility model aims to provide the positioning device for processing the precise metal piece, a plurality of misaligned steel plates are stacked on a base plate, an electric push rod is started to drive a plurality of guide rods to synchronously move through a push plate, the plurality of guide rods drive any corresponding L-shaped frame and adjacent corresponding L-shaped frames to keep the same distance to move through adjacent connecting rods, the corresponding two L-shaped frames move to two ends of each steel plate, a driving motor is started to drive two sliding blocks to move in opposite directions through a screw rod, the two abutting rods are made to abut any two corresponding L-shaped frames to move in opposite directions to clamp the adjacent steel plates, the plurality of steel plates are driven to scatter by the adjacent L-shaped frames through controlling the movement of the guide rods, and therefore the plurality of steel plates can be aligned automatically, the plurality of steel plates are separated, and a user can typeset the steel plates conveniently.

The aim of the utility model can be achieved by the following technical scheme:

The positioning device for processing the precise metal piece comprises an L-shaped plate, wherein a clamping groove is formed in the top end of a long arm of the L-shaped plate, a clamping mechanism is arranged in the clamping groove, a fixing mechanism is arranged at one end of the bottom surface of the L-shaped plate, and a driving mechanism is arranged on the bottom surface of the L-shaped plate;

The clamping mechanism comprises a fixing plate, one end of the fixing plate is fixedly connected to one side of the long arm of the L-shaped plate, a plurality of L-shaped frames are arranged at two ends of the clamping groove, the L-shaped frames at one end of the clamping groove correspond to the L-shaped frames at the other end of the clamping groove one by one, two corresponding L-shaped frames at two ends of the clamping groove are respectively located in the same horizontal plane, clamping blocks are fixedly connected to one end of the long arm of the L-shaped frame, and the clamping blocks are slidably clamped inside the clamping groove.

The method is further characterized in that: guide rods are arranged between every two L-shaped frames at one end of the clamping groove, one side of each L-shaped frame at the same end of the clamping groove is fixedly connected with a supporting rod, two parallel supporting rods at two ends of the clamping groove are respectively located in the same vertical plane with two ends of the adjacent guide rods, two connecting rods are respectively rotatably sleeved at two ends of each guide rod, and one end of each connecting rod at the same end of the same guide rod is respectively rotatably connected with the supporting rods on the two adjacent L-shaped frames.

The method is further characterized in that: the utility model discloses a fixed plate, including L template, fixed plate top surface, L template one side fixedly connected with electric putter, and electric putter's active end fixedly connected with push pedal, the equal fixedly connected with spacing ring in L template opposite sides, and be located two L type frame long arms of below and slide respectively and cup joint inside two spacing rings, fixed plate top surface fixedly connected with a plurality of backing plates.

The method is further characterized in that: the push plate one side has seted up the spout, and a plurality of the equal rotation of guide arm lateral wall has cup jointed the loop bar, and a plurality of equal fixedly connected with connecting block of loop bar lateral wall, a plurality of the equal sliding joint of connecting block is inside the spout.

The method is further characterized in that: the fixing mechanism comprises a first clamping plate, the first clamping plate is U-shaped, a rotating shaft is fixedly sleeved at one end of the bottom surface of the L-shaped plate and connected between two arms of the first clamping plate in a rotating mode, a second clamping plate is arranged on one side of the first clamping plate, two screwing rods are connected on one side of the first clamping plate in a rotating mode, two screwing holes are formed in one side of the second clamping plate, and inner side walls of the two screwing holes are connected with outer side walls of the two screwing rods in a rotating mode respectively.

The method is further characterized in that: one end of the first clamping plate is fixedly connected with a swinging cylinder, and the output end of the swinging cylinder penetrates through one end of the first clamping plate and is fixedly connected with one end of the rotating shaft.

The method is further characterized in that: the driving mechanism comprises a sliding rail, the sliding rail is fixedly connected to the bottom surface of the L-shaped plate, a screw is rotationally connected between two ends of the inner portion of the sliding rail, one end of the sliding rail is fixedly connected with a driving motor, a motor shaft of the driving motor penetrates through one end of the sliding rail and is fixedly connected with one end of the screw, two ends of the inner portion of the sliding rail are respectively and slidably connected with sliding blocks, two sides of the sliding blocks are respectively provided with threaded holes in which inner side walls and outer side walls of the screw are screwed, two top surfaces of the sliding blocks are fixedly connected with supporting rods, a plurality of L-shaped frames at the same end of the clamping groove are fixedly connected with lantern rings, and inner side walls of a plurality of lantern rings at the same end of the clamping groove are respectively and slidably sleeved with the outer side walls of the adjacent supporting rods.

The utility model has the beneficial effects that:

Through placing a plurality of unaligned steel sheet stacks on the backing plate, then use the personnel to start electric putter and drive the push pedal and remove, make the push pedal drive a plurality of guide arms synchronous motion, thereby make a plurality of guide arms drive a plurality of L type framves that are located draw-in groove one end through adjacent connecting rod and keep moving under the state of equidistant all the time, and make a plurality of L type framves that are located the draw-in groove other end synchronous motion, make the accessible of user adjust the guide arm position, make a plurality of steel sheet both ends respectively with be located draw-in groove both ends and corresponding two L type framves parallel, then use the personnel to start driving motor through the screw rod rotation, make the screw rod drive two sliders and move in opposite directions, make two sliders drive two arbitrary two corresponding L type framves of butt conflict and move in opposite directions with adjacent steel sheet centre gripping, and use personnel accessible control a plurality of guide arms remove, make a plurality of steel sheets driven by adjacent L type frame and scatter, thereby can align a plurality of steel sheets voluntarily, be convenient for use personnel typesetting, and make a plurality of steel sheets separate, make it be difficult for influencing line cutting machine cutting operation.

Drawings

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

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is an exploded view of the structure of the fixing mechanism and the clamping mechanism in the present utility model;

FIG. 3 is a schematic view of a fastening mechanism according to the present utility model;

fig. 4 is an exploded view of the structure of the driving mechanism in the present utility model.

In the figure: 100. an L-shaped plate; 101. a clamping groove; 110. a rotating shaft; 120. a limiting ring; 200. a fixing mechanism; 210. a first clamping plate; 220. a second clamping plate; 221. screwing the hole; 230. a screwing rod; 240. a swing cylinder; 300. a driving mechanism; 310. a slide rail; 320. a screw; 330. a driving motor; 340. a slide block; 341. a threaded hole; 350. a supporting rod; 360. a collar; 400. a clamping mechanism; 410. an L-shaped frame; 411. a clamping block; 420. a support rod; 430. a guide rod; 431. a connecting rod; 440. a loop bar; 441. a connecting block; 450. an electric push rod; 460. a push plate; 461. a chute; 470. a fixing plate; 471. a backing plate.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model discloses a positioning device for processing a precise metal piece, which is shown in fig. 1-4, and comprises an L-shaped plate 100, wherein a clamping groove 101 is formed in the top end of a long arm of the L-shaped plate 100, a clamping mechanism 400 is arranged in the clamping groove 101, one end of the bottom surface of the L-shaped plate 100 is provided with a fixing mechanism 200, and the bottom surface of the L-shaped plate 100 is provided with a driving mechanism 300;

The clamping mechanism 400 comprises a fixing plate 470, one end of the fixing plate 470 is fixedly connected to one side of a long arm of the L-shaped plate 100, two ends of the clamping groove 101 are respectively provided with a plurality of L-shaped frames 410, the L-shaped frames 410 at one end of the clamping groove 101 are in one-to-one correspondence with the L-shaped frames 410 at the other end of the clamping groove 101, two corresponding L-shaped frames 410 at two ends of the clamping groove 101 are respectively located in the same horizontal plane, clamping blocks 411 are fixedly connected to one end of the long arm of the L-shaped frame 410, the clamping blocks 411 are slidably clamped inside the clamping groove 101, a plurality of steel plates with the same length are placed on the fixing plate 470 during use, two opposite sides of the clamping blocks 411 are abutted against two opposite inner side walls of the clamping groove 101, so that the L-shaped frames 410 cannot rotate, and during use, a user can clamp adjacent steel plates through the two corresponding short arms of the L-shaped frames 410 at the two ends of the clamping groove 101, so that the plurality of steel plates can be positioned and kept aligned automatically, and a plurality of automatic cutting lines of steel plates can be cut by using the automatic cutting machines for the user can cut the plurality of steel plates simultaneously.

An electric push rod 450 is fixedly connected to one side of the L-shaped plate 100, a push plate 460 is fixedly connected to the movable end of the electric push rod 450, limiting rings 120 are fixedly connected to two opposite sides of the L-shaped plate 100, two long arms of the L-shaped frames 410 positioned at the lowest part are respectively sleeved in the two limiting rings 120 in a sliding manner, a plurality of base plates 471 are fixedly connected to the top surface of the fixing plate 470, a guide rod 430 is arranged between every two L-shaped frames 410 positioned at one end of the clamping groove 101, a supporting rod 420 is fixedly connected to one side of each L-shaped frame 410 positioned at the same end of the clamping groove 101, two opposite ends of the two parallel supporting rods 420 respectively positioned at two ends of the clamping groove 101 are respectively positioned in the same vertical plane with two ends of the adjacent guide rod 430, two connecting rods 431 are respectively sleeved at two ends of the plurality of the guide rod 430 in a rotating manner, one ends of the two connecting rods 431 positioned at the same end of the same guide rod 430 are respectively connected with the supporting rods 420 on the two adjacent L-shaped frames 410 in a rotating manner, the push plate 460 is provided with a sliding groove 461 on one side, the outer side walls of the guide rods 430 are rotatably sleeved with the loop bars 440, the outer side walls of the loop bars 440 are fixedly connected with the connecting blocks 441, the connecting blocks 441 are slidably clamped in the sliding groove 461, because two corresponding L-shaped frames 410 at the two ends of the clamping groove 101 are limited by two limiting rings 120 and cannot move, when in use, a user pushes the guide rods 430 synchronously towards the L-shaped plate 100 for the same distance, the guide rods 430 drive the L-shaped frames 410 at one end of the clamping groove 101 to synchronously move through the connecting rods 431 at the two ends, the intervals among the L-shaped frames 410 are kept equal, the L-shaped frames 410 at the other end of the clamping groove 101 are synchronously driven to synchronously move with the corresponding L-shaped frames 410 at one end of the clamping groove 101, and all the L-shaped frames 410 can only slide in the clamping groove 101 due to the limiting of the adjacent clamping blocks 411, during the use, the user is earlier with a plurality of guide arms 430 to keeping away from L template 100 direction and remove the same distance, make all L template 410 stack, then the user stacks a plurality of steel sheets that do not align on backing plate 471, backing plate 471 top is located two corresponding L template 410 top that draw-in groove 101 both ends are bottommost, make two L template 410 that are spacing by spacing ring 120 and steel sheet contact, and make the lateral wall of a plurality of steel sheets all lean on with L template 100, make a plurality of steel sheets keep long side alignment when placing through L template 100, L template 100 is used for comparatively smooth with the lateral wall that the steel sheet leaned on, or spray lubrication has on L template 100 lateral wall, be convenient for the steel sheet lateral wall to slide along it, then start actuating mechanism 300 drives all corresponding two L template 410 and move in opposite directions, and use other two corresponding L template 410 to follow steel sheet both ends to use the manual steel sheet to keep in alignment, then make a plurality of guide arms 430 to the same distance to L template 100 direction removal, make a plurality of corresponding two L template 410 keep with the same side wall that keep scattering, and a plurality of guide arms 471 are used for the adjacent to cut off the distance with the steel sheet 471, can be used for the clearance between two adjacent steel sheet 471 and can be cut off with the clearance between the adjacent pair of steel sheet, can be used for the clearance between the adjacent pair of adjacent steel sheet 471, and can be used for cooling down the clearance to take place, and the clearance is convenient for the spacer plate 450 to cut, the gap is easy to take off, and can be used to take off, and has the gap between two adjacent to cut to draw-down to have, and can's cooling plate to draw-down, and take off.

The fixing mechanism 200 comprises a first clamping plate 210, the first clamping plate 210 is in a U shape, one end of the bottom surface of the L-shaped plate 100 is fixedly sleeved with a rotating shaft 110, the rotating shaft 110 is rotationally connected between two arms of the first clamping plate 210, one side of the first clamping plate 210 is provided with a second clamping plate 220, one side of the first clamping plate 210 is rotationally connected with two screwing rods 230, two screwing holes 221 are formed in one side of the second clamping plate 220, the inner side walls of the two screwing holes 221 are respectively rotationally connected with the outer side walls of the two screwing rods 230, during use, the first clamping plate 210 and the second clamping plate 220 are placed on two sides of the water tank wall of the automatic wire cutting machine, then the two screwing rods 230 are rotated, the first clamping plate 210 and the second clamping plate 220 are close to the position of the water tank wall, so that the L-shaped plate 100 is fixed, one end of the first clamping plate 210 is fixedly connected with a swinging cylinder 240, the output end of the swinging cylinder 240 penetrates one end of the first clamping plate 210 and is fixedly connected with one end of the rotating shaft 110, cut by the automatic wire cutting machine, cut waste materials on a plurality of steel plates fall into gaps between steel plates, and can be easily started by personnel to swing to drive the L-shaped plates to rotate the water tank 240, and waste materials cannot fall down inside the water tank 100.

The driving mechanism 300 comprises a sliding rail 310, the sliding rail 310 is fixedly connected to the bottom surface of the L-shaped plate 100, a screw 320 is rotationally connected between two ends of the inner portion of the sliding rail 310, one end of the sliding rail 310 is fixedly connected with a driving motor 330, a motor shaft of the driving motor 330 penetrates through one end of the sliding rail 310 and is fixedly connected with one end of the screw 320, two ends of the inner portion of the sliding rail 310 are respectively connected with sliding blocks 340 in a sliding clamping mode, one side of each sliding block 340 is provided with threaded holes 341 with inner side walls in a screwing mode with the outer side wall of the screw 320, the top surfaces of the two sliding blocks 340 are fixedly connected with supporting rods 350, one sides of a plurality of L-shaped frames 410 positioned at the same end of the clamping groove 101 are fixedly connected with lantern rings 360, the inner side walls of the plurality of lantern rings 360 positioned at the same end of the clamping groove 101 are in sliding sleeving connection with the outer side walls of the adjacent supporting rods 350, all L-shaped frames 410 positioned at two ends of the clamping groove 101 are fixedly connected to be difficult to incline by means of the lantern rings 360, the screw 320 is a positive and negative tooth screw rod 340, the driving motor 330 is started to drive the screw 320 to rotate, and the two sliding blocks 340 can move oppositely or oppositely and detachably through the screw rods 340 when the two sliding blocks 340 move oppositely and the two sliding blocks 340 are correspondingly and the two clamping steel plates 410 are positioned at any two adjacent L-shaped frames and opposite L-shaped frames 410 are correspondingly.

Working principle: when in use, the first clamping plate 210 and the second clamping plate 220 are placed on two sides of the water tank wall of the automatic line cutting machine, then the two screwing rods 230 are rotated to enable the first clamping plate 210 and the second clamping plate 220 to be close to the water tank wall to clamp the water tank wall, so that the position of the L-shaped plate 100 is fixed, then the electric push rod 450 is started to drive the push plate 460 to pull the plurality of guide rods 430 to move away from the L-shaped plate 100, so that the plurality of guide rods 430 pull the adjacent L-shaped frames 410 to synchronously move through the adjacent connecting rods 431, the distances between all the L-shaped frames 410 are kept equal, a user can control the distance between any two corresponding L-shaped frames 410 positioned at two ends of the clamping groove 101 and the adjacent two corresponding L-shaped frames 410 according to the moving distance of the guide rods 430, and the distance between any two corresponding L-shaped frames 410 positioned at two ends of the clamping groove 101 and the adjacent two corresponding L-shaped frames 410 is kept at the same distance, by stacking a plurality of misaligned steel plates on the base plate 471 by a user, and enabling the side walls of the plurality of steel plates to be abutted against the L-shaped plate 100, enabling the plurality of steel plates to be aligned on the long sides when being placed by the L-shaped plate 100, enabling the two L-shaped frames 410 limited by the limiting rings 120 not to be contacted with the steel plates, enabling the two ends of each steel plate to be parallel to the two corresponding L-shaped frames 410 positioned at the two ends of the clamping groove 101 by adjusting the positions of the plurality of guide rods 430 by the user, then starting the driving motor 330 to drive the screw 320 to rotate, enabling the screw 320 to drive the two sliding blocks 340 to move in opposite directions, enabling the two sliding blocks 340 to drive any corresponding two L-shaped frames 410 positioned at the two ends of the clamping groove 101 to approach in opposite directions by the collar 360, enabling the corresponding two L-shaped frames 410 to clamp and fix the adjacent steel plates in a clamping mode, and enabling all the L-shaped frames 410 to move synchronously, the moving distances are equal, so that when two corresponding L-shaped frames 410 clamp adjacent steel plates, a plurality of steel plates are automatically aligned;

Then, a user starts the electric push rod 450 to drive the plurality of guide rods 430 to move towards the L-shaped plate 100 by the push plate 460 for the same distance, so that a plurality of corresponding two L-shaped frames 410 are dispersed at the same distance, a plurality of steel plates are driven by two adjacent L-shaped frames 410 to be separated, a certain gap is reserved between the lowest steel plate and the base plate 471 for the cutting mechanism of the wire cutting machine to enter and exit, then the automatic wire cutting machine is started to enable the bottom end of the cutting mechanism to move into the gap between the base plate 471 and the lowest steel plate, the top end of the cutting mechanism is moved to the upper side of the highest steel plate, and then the molybdenum wires are utilized to synchronously cut the plurality of steel plates;

After the molybdenum wire is cut, the cut waste materials on the steel plates are easy to fall into a gap between the two steel plates, and then a user can start the swinging cylinder 240 to drive the L-shaped plate 100 to rotate so as to pour the waste materials into the water tank.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is merely illustrative and explanatory of the utility model, as various modifications and additions may be made to the particular embodiments described, or in a similar manner, by those skilled in the art, without departing from the scope of the utility model or exceeding the scope of the utility model as defined in the claims.

Claims (7)

1. The positioning device for machining the precise metal piece comprises an L-shaped plate (100), and is characterized in that a clamping groove (101) is formed in the top end of a long arm of the L-shaped plate (100), a clamping mechanism (400) is arranged in the clamping groove (101), a fixing mechanism (200) is arranged at one end of the bottom surface of the L-shaped plate (100), and a driving mechanism (300) is arranged at the bottom surface of the L-shaped plate (100);

The clamping mechanism (400) comprises a fixing plate (470), one end of the fixing plate (470) is fixedly connected to one side of a long arm of the L-shaped plate (100), a plurality of L-shaped frames (410) are arranged at two ends of the clamping groove (101), the L-shaped frames (410) located at one end of the clamping groove (101) are in one-to-one correspondence with the L-shaped frames (410) located at the other end of the clamping groove (101), two corresponding L-shaped frames (410) located at two ends of the clamping groove (101) are located in the same horizontal plane, clamping blocks (411) are fixedly connected to one end of the long arm of the L-shaped frame (410), and the clamping blocks (411) are in sliding clamping connection with the inside of the clamping groove (101).

2. The positioning device for precision metal part machining according to claim 1, wherein a guide rod (430) is arranged between every two L-shaped frames (410) at one end of the clamping groove (101), one sides of a plurality of L-shaped frames (410) at the same end of the clamping groove (101) are fixedly connected with support rods (420), two opposite and parallel support rods (420) at two ends of the clamping groove (101) are respectively positioned in the same vertical plane with two ends of the adjacent guide rod (430), two connecting rods (431) are respectively sleeved at two ends of the plurality of guide rods (430) in a rotating mode, and one ends of the two connecting rods (431) at the same end of the same guide rod (430) are respectively connected with the support rods (420) on the two adjacent L-shaped frames (410) in a rotating mode.

3. The positioning device for precision metal part machining according to claim 2, wherein an electric push rod (450) is fixedly connected to one side of the L-shaped plate (100), a push plate (460) is fixedly connected to a movable end of the electric push rod (450), limiting rings (120) are fixedly connected to two opposite sides of the L-shaped plate (100), two long arms of the L-shaped frames (410) located at the lowest position are respectively and slidably sleeved inside the two limiting rings (120), and a plurality of backing plates (471) are fixedly connected to the top surface of the fixing plate (470).

4. The positioning device for precision metal part machining according to claim 3, wherein a chute (461) is formed in one side of the push plate (460), a plurality of sleeve rods (440) are rotatably sleeved on outer side walls of the guide rods (430), connecting blocks (441) are fixedly connected to outer side walls of the sleeve rods (440), and the connecting blocks (441) are slidably clamped inside the chute (461).

5. The positioning device for precision metal part machining according to claim 1, wherein the fixing mechanism (200) comprises a first clamping plate (210), the first clamping plate (210) is in a U shape, one end of the bottom surface of the L-shaped plate (100) is fixedly sleeved with a rotating shaft (110), the rotating shaft (110) is rotationally connected between two arms of the first clamping plate (210), a second clamping plate (220) is arranged on one side of the first clamping plate (210), two screwing rods (230) are rotationally connected on one side of the first clamping plate (210), two screwing holes (221) are formed in one side of the second clamping plate (220), and inner side walls of the two screwing holes (221) are respectively rotationally connected with outer side walls of the two screwing rods (230).

6. The positioning device for precision metal part machining according to claim 5, wherein one end of the first clamping plate (210) is fixedly connected with a swinging cylinder (240), and an output end of the swinging cylinder (240) penetrates through one end of the first clamping plate (210) and is fixedly connected with one end of the rotating shaft (110).

7. The positioning device for precision metal part machining according to claim 2, wherein the driving mechanism (300) comprises a sliding rail (310), the sliding rail (310) is fixedly connected to the bottom surface of the L-shaped plate (100), a screw (320) is rotationally connected between two ends inside the sliding rail (310), one end of the sliding rail (310) is fixedly connected with a driving motor (330), a motor shaft of the driving motor (330) penetrates through one end of the sliding rail (310) and is fixedly connected with one end of the screw (320), two ends inside the sliding rail (310) are respectively and slidably clamped with a sliding block (340), threaded holes (341) with inner side walls screwed with the outer side walls of the screw (320) are formed in one side of the two sliding blocks (340), two abutting rods (350) are fixedly connected to the top surfaces of the two sliding blocks (340), a plurality of L-shaped frames (410) located at the same end of the clamping groove (101) are fixedly connected with lantern rings (360), and the inner side walls of the plurality of lantern rings (360) located at the same end of the clamping groove (101) are slidably sleeved with the outer side walls of the adjacent abutting rods (350).