CN214816459U

CN214816459U - Ring opening device for metal ring processing

Info

Publication number: CN214816459U
Application number: CN202120216456.7U
Authority: CN
Inventors: 杨笃
Original assignee: Chongqing Huicheng Technology Co ltd
Current assignee: Chongqing Huicheng Technology Co ltd
Priority date: 2021-01-26
Filing date: 2021-01-26
Publication date: 2021-11-23
Anticipated expiration: 2031-01-26

Abstract

The utility model relates to a ferrule opening technical field, specific ring mouth opening device is used in ferrule processing that says so, comprises a workbench, four support mounts of workstation bottom difference fixed mounting, the workstation front end is equipped with the standing groove, fixed mounting control cabinet in the standing groove, workstation left side top fixed mounting lock door subassembly, workstation top fixed surface installs the removal subassembly, workstation top fixed surface installs the fixed square. The utility model discloses a can utilize the baffle to prevent to fly in disorder with the sweeps of man-hour after processing is accomplished to placing the sweeps that is blocked in utilizing the operation long slab and collecting, collect the completion back when the sweeps, manual L type pole that rotates comes out from the second draw-in groove again, pull handle and then utilize running groove and running piece sliding fit to remove again, pull out again and place the long slab in, clear up and collect the sweeps after the completion, be favorable to protecting the chaotic condition of workstation that the sweeps caused in the course of working.

Description

Ring opening device for metal ring processing

Technical Field

The utility model relates to a metal sleeve ring opening technical field particularly, relates to a ring mouth opening device is used in metal sleeve ring processing.

Background

The tapping machine is an important machine for opening a taphole during tapping of a blast furnace, and is essentially a long-rod electric drill which is hung by a cantilever and can rotate, advance and retreat. The tapping machine adopted at home and abroad mainly comprises five types of suspension type electric tapping machines, full-pneumatic tapping machines, gas-liquid compound transmission type tapping machines, full-electric tapping machines and full-hydraulic tapping machines.

However, in the conventional opening device, the waste chips are not conveniently cleaned, so that the situation that the waste chips appearing after the machining of the machining workbench are all processed is caused, the waste labor and time caused by cleaning are caused, the machining of different thicknesses and openings is not facilitated, the machining can be performed only on a single thickness, and different market demands cannot be met.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a metal ring processing is with circle mouth opening device can effectively solve the problem among the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a ring opening device for metal ring processing comprises a workbench, wherein four supporting and fixing frames are respectively and fixedly installed at the bottom end of the workbench, a placing groove is formed in the front end of the workbench, a control console is fixedly installed in the placing groove, a door locking assembly is fixedly installed at the top end of the left side of the workbench, a moving assembly is fixedly installed at the top end of the workbench, a fixed square block is fixedly installed at the top end of the workbench, a fixed support is fixedly installed at the bottom end inside the fixed square block, a third motor is fixedly installed in the middle of the fixed support, the output end of the third motor is fixedly connected with a rotating disk, the rotating disk is fixedly installed on the outer surface of the fixed square block, a placing disk is fixedly and rotatably installed on the rotating disk, a circular groove is formed in the placing disk, baffles are fixedly installed on the left side and the right side of the outer surface of the fixed square block, and a placing long plate is arranged on the surface of the top end of the workbench, the inside slotted hole that is equipped with of long slab of placing, it is located the below of placing the disc to place the long slab, place the fixed short both sides of both sides fixed mounting about the long slab front end surface fixed mounting circle axle in the fixed short piece, both sides circle axle surface fixed mounting L type pole, both sides L type pole surface fixed mounting short type fixture block, it is equipped with No. two operation grooves to place the inside both sides of going upward of long slab, both sides No. two operation groove slidable mounting operation piece, both sides be equipped with the second draw-in groove in the operation piece, both sides short type fixture block and second draw-in groove chucking cooperation, both sides the front end of operation piece fixed connection operation long slab of operation, the inside dead slot that is equipped with of operation long slab, the rear end fixed connection handle of operation long slab.

Preferably, the door locking assembly comprises an elongated block and a fixing rod, the fixing rod is fixedly arranged on two sides of the left side of the workbench, the fixing rod is fixedly arranged on the top end of the fixing rod and is provided with a buckle, two sides of the fixing block are fixedly connected with the tension spring and two sides of the tension spring, the bottom end of the tension spring is fixedly connected with the long rod and two sides of the long rod are fixedly connected with the clamping block and two sides of the clamping block, the inner surface of the fixing rod is provided with a sliding groove and two sides of the sliding groove and sliding installation cross block, the cross block is provided with a first clamping groove and two sides of the first limiting groove and sliding installation sliding block, and the sliding block is fixedly connected with the elongated block.

As preferred, the removal subassembly includes fixed diaphragm and first motor, first motor fixed mounting is on the top surface of workstation, fixed diaphragm fixed mounting is on the top surface of workstation, the inside right side fixed mounting bearing frame of fixed diaphragm, rotate the bottom of installation lead screw in the bearing frame, the output of lead screw top fixed connection first motor, threaded connection thread block in the lead screw, thread block surface fixed connection square.

Preferably, a first running groove is formed in the fixed transverse plate and located on the front side of the screw rod, a supporting round rod is installed in the first running groove in a sliding mode and fixedly connected to limiting round grooves on the left side and the right side of the square block, an air cylinder is fixedly installed on the upper surface of the fixed transverse plate, the output end of the air cylinder is fixedly connected with a pushing plate, the pushing plate is fixedly connected with a positioning block, and a second motor is fixedly installed on the left side of the upper surface of the positioning block.

Preferably, the output end of the second motor penetrates through a disc to be connected with a transmission column, a cutting blade is rotatably mounted in the transmission column, a first fixing clamp is fixedly mounted on the upper surface of the positioning block, a drill bit is fixedly mounted in the first fixing clamp, a second fixing clamp is fixedly mounted on the upper surface of the positioning block, and a milling cutter is fixedly mounted in the second fixing clamp.

Preferably, the left side and the right side of the positioning block are fixedly provided with the guide blocks, the guide blocks on the two sides are slidably arranged in the second limiting groove, the two sides of the second limiting groove are arranged in the vertical rods, and the vertical rods on the two sides are fixedly arranged on the surface of the positioning block.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) the part that at first needs processing is placed and is got fixedly in placing the circular recess in the disc, it is rotatory to reuse third motor drive to place the disc, and utilize the control cabinet to control and remove the subassembly and process, reprocessing is accomplished and can utilize the baffle to prevent to fly in disorder with the sweeps of processing, and the sweeps that is blocked is being placed and is being collected at the long board of operation, after the sweeps is collected and is accomplished, manually rotate L type pole again and come out from the second draw-in groove, pull handle and then utilize No. two operation grooves and operation piece sliding fit to remove again, pull out again and place the long board, the sweeps after collecting the completion, be favorable to protecting the workstation chaotic condition that the sweeps caused in the course of working, at last reuse lock door subassembly pins, thereby be favorable to placing the long board of operation.

(2) The first motor is started to rotate the screw rod so as to drive the thread block to reciprocate left and right, so that continuous machining actions can be completed, the bearing seat is utilized to support and fix the screw rod, the cylinder is utilized to push the positioning block to move forwards, so that machining tools can be sequentially machined to machined objects, the supporting round rod is utilized to support and fix the square block, so that the situation that collapse is caused by the fact that no supporting point exists during moving can be prevented, the square block is supported and moved in an auxiliary manner, so that the machined objects can be machined, and when the machined objects with the round grooves in rotation are utilized, the machined objects with different thicknesses can be ground and cut by the milling cutter, different machined objects can be met, so that the drill bit is utilized to drill the machined objects, so that the opening actions can be achieved, and finally, the cutting blades are utilized to cut openings in different directions, the final processing action of accomplishing in proper order to can also utilize guide block and second spacing groove sliding fit, thereby be favorable to cooperating the action that the cylinder removed, but also can prevent that the cylinder from releasing the position that can not reach the processing thing, but also can carry out stable effect to the locating piece at the in-process that promotes, be favorable to firm removal and processing.

Drawings

Fig. 1 is a schematic view of the overall structure of a ring opening device for metal ring processing according to the present invention;

fig. 2 is a schematic top view of the opening device for metal ferrule processing of the present invention;

fig. 3 is an enlarged schematic structural view of a portion a in fig. 2 of a ring opening device for metal ring processing according to the present invention;

FIG. 4 is a block structure diagram of a ring opening device for metal ring processing according to the present invention;

FIG. 5 is a schematic view of a fixed block of the opening device for metal ferrule processing of the present invention;

fig. 6 is a schematic view of an elongated block structure of a ring opening device for metal ferrule processing according to the present invention;

fig. 7 is a schematic structural view of a horizontal block of the ring opening device for metal ring processing of the present invention.

In the figure: 1. a work table; 2. a door lock assembly; 201. a slider; 202. a transverse block; 203. fixing the rod; 204. A fixed block; 205. a sliding groove; 206. a first limit groove; 207. buckling; 208. a tension spring; 209. A clamping block; 210. a long rod; 211. a first card slot; 212. a long block; 3. a moving assembly; 301. a screw rod; 302. a first running groove; 303. a bearing seat; 304. a first motor; 305. a thread block; 306. a square block; 307. a limiting circular groove; 308. a support round bar; 309. a cylinder; 310. a push plate; 311. a cutting blade; 312. a drive post; 313. a disc; 314. a vertical rod; 315. a second limit groove; 316. a second motor; 317. a first fixing jig; 318. a drill bit; 319. milling cutters; 320. a second fixing jig; 321. Fixing the transverse plate; 322. positioning blocks; 323. a guide block; 4. fixing the square block; 401. a baffle plate; 402. fixing a bracket; 403. a third motor; 404. rotating the disc; 405. placing the disc; 406. a circular groove; 5. A console; 501. a placement groove; 6. supporting the fixed frame; 7. placing the long plate; 701. a slot; 702. a second running groove; 703. a handle; 704. operating the long plate; 705. fixing the short block; 706. a circular shaft; 707. an L-shaped rod; 708. a short fixture block; 709. a second card slot; 710. and executing the block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

As shown in FIGS. 1-7, a ring opening device for metal ferrule processing comprises a workbench 1, four supporting and fixing frames 6 are respectively fixedly installed at the bottom end of the workbench 1, a placing groove 501 is arranged at the front end of the workbench 1, a control console 5 is fixedly installed in the placing groove 501, a door locking assembly 2 is fixedly installed at the top end of the left side of the workbench 1, a moving assembly 3 is fixedly installed at the top end of the workbench 1, a fixed block 4 is fixedly installed at the top end of the workbench 1, a fixed bracket 402 is fixedly installed at the bottom end in the fixed block 4, a third motor 403 is fixedly installed in the middle of the fixed bracket 402, the output end of the third motor 403 is fixedly connected with a rotating disk 404, the rotating disk 404 is fixedly installed on the outer surface of the fixed block 4, a placing disk 405 is fixedly and rotatably installed on the rotating disk 404, a circular groove 406 is arranged in the placing disk 405, baffles 401 are fixedly installed at the left side and the right side of the outer surface of the fixed block 4, the top end surface of the workbench 1 is provided with a placement long plate 7, a slotted hole 701 is formed in the placement long plate 7, the placement long plate 7 is located below a placement disc 405, circular shafts 706 are fixedly installed in the short blocks 705 fixedly installed on the upper side and the lower side of the outer surface of the front end of the placement long plate 7, circular shafts 706 are fixedly installed in the short blocks 705 fixedly installed on the two sides of the outer surface of the circular shafts 706, short fixture blocks 708 are fixedly installed on the outer surfaces of the L-shaped rods 707 on the two sides, two operation grooves 702 are formed in the upward two sides of the placement long plate 7, operation blocks 710 are slidably installed in the two operation grooves 702 on the two sides, second clamping grooves 709 are formed in the operation blocks 710 on the two sides, the short fixture blocks 708 on the two sides are tightly matched with the second clamping grooves 709, the operation blocks 710 on the two sides are fixedly connected with the front end of the operation long plate 704, a hollow groove is formed in the operation long plate 704, and a handle 703 is fixedly connected with the rear end of the operation long plate 704.

Through the technical scheme, firstly, a part to be processed is placed in a circular groove 406 in a placing disc 405 to be placed and taken out and fixed, then, a third motor 403 is used for driving the placing disc 405 to rotate, a control console 5 is used for controlling a moving component 3 to process, a baffle 401 can be used for preventing scraps produced in processing from flying in a mess mode after reprocessing is finished, in addition, a moving long plate 704 is used for placing and collecting the blocked scraps, after the scraps are collected, a door locking component 2 is pulled, an L-shaped rod 707 is manually rotated to come out of a second clamping groove 709, a handle 703 is pulled, then, a second moving groove 702 and a moving block 710 are used for sliding fit to move, the door locking component 7 is pulled out to be placed, the collected scraps are cleaned, the condition that the scraps are prevented from causing the disorder of a working table in the processing process is facilitated, and finally, the door locking component 2 is used for locking, thereby facilitating placement of the running length 704.

In this embodiment, the door locking assembly 2 comprises an elongated block 212 and fixing rods 203, the fixing rods 203 on both sides are fixedly mounted on both left sides of the working table 1, the fixing block 204 is fixedly mounted on the top end of the fixing rod 203 on both sides, the buckle 207 is fixedly mounted on the outer surface of the fixing block 204 on both sides, the tension spring 208 is fixedly connected to both sides, the long rod 210 is fixedly connected to the bottom end of both sides, the fixture block 209 is fixedly connected to both left and right sides of the bottom end of the long rod 210 on both sides, the sliding groove 205 is formed on the inner surface of the fixing rod 203 on both sides, the cross block 202 on both sides is slidably mounted with the cross block 205, the first locking groove 211 is formed on the cross block 202 on both sides, the first locking groove 206 is formed on the bottom end of the inner surface of the fixing rod 203 on both sides, the sliding block 201 is slidably mounted in the first locking groove 206 on both sides, the elongated block 212 on both sides is fixedly connected to the elongated block 212 on both sides, when the handle is pulled out, the elongated block 703 is capable of sliding the elongated block 212 to move downwards, thereby place the long board 704 of operation under moving the long board 704 of operation to the top that utilizes long piece 212, and then be favorable to preventing the long board 704 of operation landing that is made too heavily, prevented at last that the sweeps from dropping out because of weightlessness from causing the phenomenon that the junk slot is in disorder, and still be favorable to clearing up the sweeps, can also utilize the pulling stock 210 that the pulling force of extension spring 208 is random to carry out the chucking to fixed to the inside first draw-in groove 211 of horizontal piece 202 in the arbitrary position of sliding slot 205, thereby can realize fixing the arbitrary high chucking of long piece 212.

When specifically setting up, remove subassembly 3 including fixed diaphragm 321 and first motor 304, first motor 304 fixed mounting is on the top surface of workstation 1, fixed diaphragm 321 fixed mounting is on the top surface of workstation 1, the fixed diaphragm 321 inside right side fixed mounting bearing frame 303, the bottom of rotation installation lead screw 301 in bearing frame 303, the output of lead screw 301 top fixed connection first motor 304, threaded connection thread block 305 in the lead screw 301, thread block 305 outer fixed surface connects the square 306, start first motor 304 and rotate lead screw 301 and thereby drive thread block 305 and carry out left and right reciprocating motion, thereby can accomplish continuous processing action, and utilize bearing frame 303 to carry out the support to lead screw 301 and fix lead screw 301.

When the device is specifically arranged, a first operation groove 302 is formed in the fixed transverse plate 321 and located on the front side of the screw rod 301, a supporting round rod 308 is installed in the first operation groove 302 in a sliding mode, the supporting round rod 308 is fixedly connected in limiting round grooves 307 on the left side and the right side of the block 306, the air cylinder 309 is fixedly installed on the upper surface of the fixed transverse plate 321, the output end of the air cylinder 309 is fixedly connected with a pushing plate 310, the pushing plate 310 is fixedly connected with a positioning block 322, a second motor 316 is fixedly installed on the left side of the upper surface of the positioning block 322, the air cylinder 309 is used for pushing the positioning block 322 to move forwards, processing of processing tools in sequence is facilitated, the supporting round rod 308 is used for supporting and fixing the block 306, so that the situation that collapse due to no supporting point is generated when the moving is facilitated, the block 306 is facilitated to be supported, and the auxiliary block 306 is moved, so that the processing of the processed objects is facilitated.

When the machining device is specifically arranged, the output end of the second motor 316 penetrates through the disc 313 to be connected with the transmission column 312, the cutting blade 311 is rotatably installed in the transmission column 312, the first fixing clamp 317 is fixedly installed on the upper surface of the positioning block 322, the drill bit 318 is fixedly installed in the first fixing clamp 317, the second fixing clamp 320 is fixedly installed on the upper surface of the positioning block 322, the milling cutter 319 is fixedly installed in the second fixing clamp 320, firstly, when machining is carried out, when a machined object of the circular groove 406 in rotation is utilized, the machined object with different thicknesses is ground and cut by the milling cutter 319, different machined objects can be met, the machined object can be drilled by the drill bit 318, the opening action can be achieved, finally, the cutting blade 311 is utilized to cut openings in different directions, and finally, the sequential machining action is completed.

When specifically setting up, locating piece 322 left and right sides fixed mounting guide block 323, both sides guide block 323 slidable mounting is in second spacing groove 315, the both sides of second spacing groove 315 are equipped with the inside at montant 314, both sides montant 314 fixed mounting is on the surface of locating piece 322, utilize guide block 323 and second spacing groove 315 sliding fit, thereby be favorable to cooperating cylinder 309 to carry out the action that removes, and can also prevent that cylinder 309 from releasing the position that can not reach the processing thing, and can also carry out stable effect to locating piece 322 at the in-process that promotes, be favorable to firm removal and processing.

The operating principle of the ring opening device for processing the metal ring is as follows:

when the cutting tool is used, a part to be machined is placed in a circular groove 406 in a placing disc 405 to be placed and taken out for fixing, a third motor 403 is used for driving the placing disc 405 to rotate, a control console 5 is used for controlling and starting a first motor 304 to rotate a screw rod 301 so as to drive a thread block 305 and further drive a square block 306 to move, a cylinder 309 is used for pushing a positioning block 322 to move forwards, a guide block 323 and a second limiting groove 315 are used for sliding fit, so that workpieces with different thicknesses can be ground and cut by using a milling cutter 319, after the cutting and grinding are completed, a drill 318 is used for drilling the workpieces so as to achieve the opening action, finally a cutting blade 311 is used for cutting openings in different directions, and finally, sequential machining actions are completed, a baffle 401 can be used for preventing scraps in machining from flying randomly, and the operation long plate 704 is used for placing and collecting blocked scraps, after the sweeps are collected and are accomplished, manually rotate L type pole 707 again and come out from second draw-in groove 709, pull handle 703 again and then utilize No. two operation groove 702 and operation piece 710 sliding fit to remove, pull out again and place among the long board 7, clear up the sweeps after collecting and accomplishing, reuse lock door subassembly 2 at last pins to be favorable to placing operation long board 704, the process of finishing postprocessing and clearance at last.

It should BE noted that the specific model of the console 5 is 5BE-2016, the specific models of the first motor 304, the second motor 316 and the third motor 403 are Y112M-44KWB3, the specific model of the cylinder 309 is HA757-02, the specification needs to BE determined by type selection according to the actual specification of the device, and the specific type selection calculation method adopts the prior art in the field, so detailed description is omitted.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a metal ring processing is with ring mouth opening device, includes workstation (1), its characterized in that: four support fixed frames (6) of fixed mounting are respectively arranged at the bottom end of the workbench (1), a placing groove (501) is arranged at the front end of the workbench (1), a control console (5) is fixedly arranged in the placing groove (501), a door locking component (2) is fixedly arranged at the top end of the left side of the workbench (1), a moving component (3) is fixedly arranged at the top end of the workbench (1), a fixed square block (4) is fixedly arranged at the top end of the workbench (1), a fixed support (402) is fixedly arranged at the inner bottom end of the fixed square block (4), a third motor (403) is fixedly arranged in the middle of the fixed support (402), a rotating disc (404) is fixedly connected at the output end of the third motor (403), the rotating disc (404) is fixedly arranged at the outer surface of the fixed square block (4), and a disc (405) is fixedly arranged and rotatably arranged on the rotating disc (404), a circular groove (406) is formed in the placing disc (405), baffles (401) are fixedly mounted on the left side and the right side of the outer surface of the fixed square block (4), a placing long plate (7) is arranged on the top end surface of the workbench (1), a slotted hole (701) is formed in the placing long plate (7), the placing long plate (7) is positioned below the placing disc (405), circular shafts (706) are fixedly mounted in the fixed short blocks (705) on the upper side and the lower side of the outer surface of the front end of the placing long plate (7), L-shaped rods (707) are fixedly mounted on the outer surfaces of the circular shafts (706) on the two sides, short fixture blocks (708) are fixedly mounted on the outer surfaces of the L-shaped rods (707) on the two sides, second running grooves (702) are formed in the upward two sides of the inner portion of the placing long plate (7), and running blocks (710) are slidably mounted in the second running grooves (702) on the two sides, the two sides of the operation block (710) are provided with second clamping grooves (709), the short clamping blocks (708) on the two sides are in clamping fit with the second clamping grooves (709), the operation block (710) on the two sides is fixedly connected with the front end of the operation long plate (704), a hollow groove is formed in the operation long plate (704), and the rear end of the operation long plate (704) is fixedly connected with a handle (703).

2. The opening device for a metal ferrule machining collar according to claim 1, wherein: the door locking assembly (2) comprises a long block (212) and fixing rods (203), the fixing rods (203) on two sides are fixedly arranged on two sides of the left side of the workbench (1), the fixing rods (203) on two sides are fixedly arranged on the top end of the fixing rod (204), the fixing blocks (204) on two sides are fixedly arranged on the outer surface of the fixing block (204), the buckles are fixedly connected with tension springs (208) on two sides, the tension springs (208) on two sides are fixedly connected with a long rod (210), the long rod (210) on two sides is fixedly connected with clamping blocks (209) on the left side and the right side of the bottom end of the long rod (210) on two sides, sliding grooves (205) are formed in the inner surfaces of the fixing rods (203) on two sides, the sliding grooves (205) on two sides are slidably arranged on transverse blocks (202), first clamping grooves (211) are formed in the transverse blocks (202) on two sides, first limiting grooves (206) are slidably arranged on the bottom end of the inner surfaces of the fixing rods (203) on two sides, the sliding blocks (201) on the two sides are fixedly connected with the long blocks (212).

3. The opening device for a metal ferrule machining collar according to claim 1, wherein: remove subassembly (3) including fixed diaphragm (321) and first motor (304), first motor (304) fixed mounting is on the top surface of workstation (1), fixed diaphragm (321) inside right side fixed mounting bearing frame (303), rotate the bottom of installation lead screw (301) in bearing frame (303), the output of the first motor (304) of lead screw (301) top fixed connection, threaded connection thread piece (305) in lead screw (301), thread piece (305) surface fixed connection square (306).

4. The opening device for a metal ferrule machining collar according to claim 3, wherein: fixed diaphragm (321) inside is equipped with the front side that a travel groove (302) is located lead screw (301), slidable mounting supports round bar (308) in a travel groove (302), support round bar (308) fixed connection in spacing round slot (307) of the left and right sides of square (306), fixed surface installs cylinder (309) on fixed diaphragm (321), the output fixed connection who pushes away push plate (310) of cylinder (309), push away push plate (310) fixed connection locating piece (322), locating piece (322) upper surface left side fixed mounting second motor (316).

5. The opening device of claim 4, wherein: the output of second motor (316) runs through disc (313) and connects transmission post (312), rotate installation cutting blade (311) in transmission post (312), the first mounting fixture (317) of fixed surface installation on locating piece (322), fixed mounting drill bit (318) in first mounting fixture (317), fixed surface installation second mounting fixture (320) on locating piece (322), fixed mounting milling cutter (319) in second mounting fixture (320).

6. The opening device for a metal ferrule machining collar according to claim 5, wherein: the utility model discloses a positioning piece, including locating piece (322), guide block (323), both sides guide block (323) slidable mounting is in second spacing groove (315), the both sides of second spacing groove (315) are equipped with the inside at montant (314), both sides montant (314) fixed mounting is on the surface of locating piece (322).