CN212161779U - Rotary station - Google Patents

Abstract

The utility model relates to a solar energy silicon chip processing equipment and technical field disclose rotatory station, rotatory station includes fourth servo motor, fourth gear, speed reducer, cross roller bearing, rotatory frock board, tow chain groove and tow chain, fourth servo motor passes through the speed reducer transmission and connects the fourth gear, the cooperation of fourth gear and cross roller bearing's outer lane, cross roller bearing level sets up, rotatory frock board fixed mounting is on cross roller bearing's outer lane, the utility model discloses replace artifical manpower transport graphite boat, each part action stroke optimization design of equipment, the high-usage of equipment, it is efficient, reduced safe risk.

Description

Rotary station

Technical Field

The utility model relates to a solar energy silicon chip processing equipment and technical field, concretely relates to rotatory station is applied to on the graphite boat haulage equipment.

Background

In the processing of solar energy silicon chip, the graphite boat that carries the silicon chip will be sent into the reaction in the technology stove, and the traditional mode that graphite boat carried business turn over technology stove relies on artifical manpower transport, because the graphite boat is rectangular shape structure, and the handling will be accomplished the action such as removal, turn to, and intensity of labour is big, relies on many people to cooperate the completion jointly, and the efficiency of transport is lower, also has certain safe risk.

SUMMERY OF THE UTILITY MODEL

In view of the not enough of background art, the utility model provides an among the prior art, traditional graphite boat transport mode relies on artifical manpower to accomplish, and intensity of labour is big, and the inefficiency of transport also has certain safe risk.

For solving the technical problem, the utility model provides a following technical scheme:

graphite boat haulage equipment, including the support body, be equipped with feeding station, ejection of compact station, rotatory station and rotatory clamping jaw in the support body, feeding station and ejection of compact station all set up and set up in the homonymy of rotatory station along support body length direction, feeding station and ejection of compact station all are used for placing the graphite boat temporarily, and fixed two positioning fixture that set up on the rotatory station, two positioning fixture all set up and symmetry each other along support body width direction, and rotatory station is used for bearing the weight of the graphite boat and rotates the graphite boat, and rotatory clamping jaw sets up in rotatory station top for grab put, remove and rotate the graphite boat, and positioning fixture is used for holding and fixed graphite boat.

Preferably, the rotary clamping jaw includes the walking beam, lifing arm and clamping assembly, the walking beam sets up on the support body along support body width direction, the walking beam is moved along support body length direction by the drive of X axle actuating mechanism, be equipped with the slip table on the walking beam, the slip table is moved along support body width direction by the drive of Y axle actuating mechanism, the lifing arm sets up on the slip table, the lifing arm is followed the motion of support body direction of height by Z axle actuating mechanism drive lifing arm, clamping assembly sets up in the lower extreme of lifing arm, clamping assembly is rotated around support body direction of height by rotary drive mechanism drive clamping assembly.

Preferably, clamping assembly includes banding horizontal installation board, and the both ends symmetry of horizontal installation board sets up splint and telescopic cylinder, and splint pass through third slider sliding connection third guide rail, and the third guide rail sets up along the length direction of horizontal installation board, and telescopic cylinder's the parallel third guide rail of telescopic link and end connection splint.

Preferably, the X-axis driving mechanism comprises a first servo motor, a first gear, a first rack, a first guide rail and a first sliding block, the first guide rail is fixed on the frame body along the length direction of the frame body, the two first guide rails are respectively arranged at two ends of the movable beam, the two ends of the movable beam are respectively connected with the first sliding block, the first sliding block is matched with the corresponding first guide rail, the first servo motor is fixed on the movable beam, the first servo motor is connected with the first gear in a driving manner, the first gear is matched with the first rack, and the first rack is fixed on the frame body along the first guide rail.

Preferably, Y axle actuating mechanism includes second servo motor, second gear, second rack, second guide rail and second slider, the second guide rail is fixed in the walking beam along support body width direction, two second guide rails set up respectively in the both ends of slip table, the second slider is connected respectively at the both ends of slip table, second slider and the cooperation of the second guide rail that corresponds, second servo motor is fixed in on the slip table, second gear is connected in the drive of second servo motor, second gear and the cooperation of second rack, the second rack is fixed in on the walking beam along the second guide rail.

Preferably, Z axle actuating mechanism includes third servo motor, standard screw rod slip table and removes the frame, the drive of third servo motor connects standard screw rod slip table, standard screw rod slip table sets up along support body direction of height, standard screw rod slip table transmission connection removes the frame.

Preferably, rotary driving mechanism includes revolving cylinder, bearing frame, rotatory mounting panel and rotation axis, revolving cylinder and bearing frame are fixed in respectively on the removal frame, the bearing frame supports and swivelling joint rotation axis, the rotation axis is connected in the revolving cylinder transmission, rotation axis fixed connection rotatory mounting panel, rotatory mounting panel is located the lifing arm below, rotatory mounting panel fixed connection is in clamping component top and transmission connection lifing arm.

Preferably, the rotating station comprises a fourth servo motor, a fourth gear, a speed reducer, a crossed roller bearing, a rotating tooling plate, a drag chain groove and a drag chain, the fourth servo motor is connected with the fourth gear through the speed reducer in a transmission way, the fourth gear is matched with the outer ring of the crossed roller bearing, the crossed roller bearing is horizontally arranged, the rotating tooling plate is fixedly arranged on the outer ring of the crossed roller bearing, the drag chain groove is of an arc structure and coaxial with the crossed roller bearing, the drag chain groove is arranged on the outer side of the crossed roller bearing, a movable partition plate is arranged in the drag chain groove, the partition plate is of an arc structure concentric with the drag chain groove, the rotating tooling plate is fixedly connected with the partition plate through two drag chain connecting plates at two ends, the partition plate divides the drag chain groove into an inner arc groove and an outer arc groove, and the two ends of the inner arc groove are communicated with the two ends of the outer arc groove, the drag chain is arranged in the drag chain groove, one end of the drag chain is fixed in the outer arc-shaped groove, the other end of the drag chain is arranged in the inner arc-shaped groove by bypassing the partition plate and is fixedly connected with a drag chain connecting plate.

Preferably, the positioning fixture comprises a left base, a middle base and a right base which are respectively fixed, a left positioning surface is vertically arranged on the left base, a right positioning surface is movably arranged on the right base, the right positioning surface is parallel to the left positioning surface, a fifth servo motor is connected with the right positioning surface in a driving way so as to drive the right positioning surface to be close to or away from the left positioning surface, bearing rollers are respectively arranged at two ends of the middle base, a fixed positioning pulley is arranged at one end of the middle base, a movable positioning pulley is arranged at the other end of the middle base, a sixth servo motor is connected with the movable positioning pulley in a driving way so as to drive the movable positioning pulley to be close to or away from the fixed positioning pulley, an induction switch is arranged at the movable positioning pulley and is used for detecting that the graphite boat falls onto or leaves the bearing rollers and controlling the sixth servo motor to stretch, a capacitance sensor is arranged on the left positioning surface and is used for sensing the graphite pressure on the left, and controlling the fifth servo motor to stop operating.

The graphite boat carrying process using the graphite boat carrying equipment comprises the following steps:

s1: the rotary clamping jaw is stopped above the feeding station;

s2: the rotary clamping jaw descends to grab the graphite boat to be processed and then ascends;

s3: the rotary clamping jaw moves to the rotary station along the length direction and the width direction of the frame body and rotates the graphite boat to be processed by 90 degrees, so that the direction of the graphite boat to be processed is changed into the direction along the width direction of the frame body;

s4: the rotary clamping jaw moves to the position above the positioning clamp at the near end of the rotary station and stops, then the rotary clamping jaw descends, the graphite boat to be processed falls into the positioning clamp, and the positioning clamp acts to fix the graphite boat to be processed;

s5: the rotary clamping jaw is lifted after putting down the graphite boat to be processed, the rotary station is rotated by 180 degrees, and the two positioning clamps are switched to different positions, so that the graphite boat to be processed is rotated to the far end, and the processed graphite boat is rotated to the lower part of the rotary clamping jaw;

s6: the joint mechanical arm delivers the graphite boat to be processed into the process furnace, and the rotary clamping jaw descends to grab the processed graphite boat and then ascends;

s7: the rotary clamping jaw moves to a discharging station along the length direction of the frame body and the width direction of the frame body and rotates the processed graphite boat for 90 degrees, so that the direction of the processed graphite boat is changed into the direction along the length direction of the frame body;

s8: the rotary clamping jaw is stopped above the discharging station;

s9: the rotary clamping jaw descends to place the processed graphite boat on a discharging station and then lifts up;

s10: and the rotary clamping jaw is translated to the feeding station along the width direction of the frame body, in the process, the joint mechanical arm takes out the processed graphite boat from the process furnace and places the graphite boat in a positioning clamp at the far end of the rotary station, and the steps are repeated.

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

1) the graphite boat is carried instead of manual labor, and is conveyed into the process furnace and is carried out of the process furnace;

2) the graphite boat to be processed is conveyed to the rotary platform by the rotary clamping jaw, the processed graphite boat is brought back when the graphite boat returns, the graphite boat to be processed and the processed graphite boat are moved in and out in a reciprocating stroke, the positions of the graphite boat to be processed and the processed graphite boat are switched in a reciprocating mode by the rotary station, the joint mechanical arm is matched, the operation strokes of all parts of the equipment are optimally designed, the utilization rate of the equipment is high, and the efficiency is high.

3) All are accomplished by equipment, do not need manpower cooperation transport, have reduced the safety risk.

Drawings

The utility model discloses there is following figure:

fig. 1 is a perspective view of the graphite boat handling equipment of the present invention;

fig. 2 is a top view of the graphite boat handling equipment of the present invention;

fig. 3 is a front view of the graphite boat handling apparatus of the present invention;

fig. 4 is a perspective view of the rotating jaw of the present invention;

fig. 5 is a side view of the rotating jaw of the present invention;

fig. 6 is a front view of the rotating jaw of the present invention;

fig. 7 is a perspective view of the lifting arm and clamping assembly of the present invention;

fig. 8 is a side view of the lift arm and clamp assembly of the present invention;

fig. 9 is a perspective view of the clamping assembly of the present invention;

fig. 10 is a front view of the clamping assembly of the present invention;

fig. 11 is a bottom view of the clamping assembly of the present invention;

fig. 12 is a side view of the clamping assembly of the present invention;

fig. 13 is a perspective view of the rotary station of the present invention;

fig. 14 is a top view of the rotary station of the present invention;

fig. 15 is a front view of the rotary station of the present invention;

fig. 16 is a perspective view of the positioning jig of the present invention;

fig. 17 is a top view of the positioning jig of the present invention;

fig. 18 is a front view of the positioning jig of the present invention;

fig. 19 is a side view of the positioning jig of the present invention.

Description of reference numerals: 1. a frame body, 2, a feeding station, 3, a discharging station, 4, a rotating station, 5, a rotating clamping jaw, 6, a positioning clamp, 7, a joint mechanical arm, 8, a graphite boat, 51, a movable beam, 52, a lifting arm, 53, a clamping assembly, 54, a sliding table, 531, a horizontal mounting plate, 532, a telescopic cylinder, 533, a clamping plate, 534, a third sliding block, 535, a third guide rail, 511, a first servo motor, 512, a first gear, 513, a first rack, 514, a first guide rail, 515, a first sliding block, 541, a second servo motor, 542, a second gear, 543, a second rack, 544, a second guide rail, 545, a second sliding block, 521, a third servo motor, 522, a standard screw sliding table, 523, a movable frame, 531, a rotary cylinder, 532, a bearing seat, 533, a rotating mounting plate, 534, a rotating shaft, 411, a fourth servo motor, 412, a fourth gear, 413 and a speed reducer, 414. the device comprises a crossed roller bearing 415, a rotary tooling plate 416, a drag chain groove 417, a drag chain 418, a separation plate 419, a drag chain connecting plate 420, an inner arc groove 421, an outer arc groove 611, a left base 612, a middle base 613, a right base 61, a left positioning surface 62, a right positioning surface 614, a fifth servo motor 615, a bearing roller 616, a fixed positioning pulley 617, a movable positioning pulley 618, a sixth servo motor 619, an induction switch 620, a capacitance sensor 621, a fixed positioning strip 622, a movable positioning strip 623, a spring 624, a guide rod 625 and a guide rod anti-drop retainer ring.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

As shown in fig. 1-19, the utility model provides a graphite boat haulage equipment, comprising a frame body 1, be equipped with feed station 2 in the support body 1, ejection of compact station 3, rotatory station 4 and rotatory clamping jaw 5, feed station 2 and ejection of compact station 3 all set up and set up in rotatory station 4's homonymy along support body length direction, feed station 2 and ejection of compact station 3 all are used for placing graphite boat 8 temporarily, the fixed two positioning fixture 6 that set up on rotatory station 4, two positioning fixture 6 all set up and mutual symmetry along support body width direction, rotatory station 4 is used for bearing the weight of graphite boat and rotates the graphite boat, rotatory clamping jaw 5 sets up in rotatory station 4 top, be used for grabbing, remove and rotate the graphite boat, positioning fixture 6 is used for holding and fixing the graphite boat.

Wherein, the rotating clamping jaw 5 includes a movable beam 51, a lifting arm 52 and a clamping assembly 53, the movable beam 51 is arranged on the frame body 1 along the width direction of the frame body, the movable beam 51 is driven by an X-axis driving mechanism to move along the length direction of the frame body, the movable beam 51 is provided with a sliding table 54, the sliding table 54 is driven by a Y-axis driving mechanism to move along the width direction of the frame body, the lifting arm 52 is arranged on the sliding table 54, the lifting arm 52 is driven by a Z-axis driving mechanism to move along the height direction of the frame body, the clamping assembly 53 is arranged at the lower end of the lifting arm 52, and the clamping assembly 53 is driven by a rotating driving mechanism to rotate around.

The clamping assembly 53 includes a strip-shaped horizontal mounting plate 531, clamping plates 533 and telescopic cylinders 532 are symmetrically arranged at two ends of the horizontal mounting plate 531, the clamping plates 533 are slidably connected to the third guide rail 535 through a third slider 534, the third guide rail 535 is arranged along the length direction of the horizontal mounting plate 531, and telescopic rods of the telescopic cylinders 532 are parallel to the third guide rail 535 and end portions of the clamping plates 533.

The X-axis driving mechanism comprises a first servo motor 511, a first gear 512, a first rack 513, first guide rails 514 and first sliding blocks 515, the first guide rails 514 are fixed on the frame body 1 along the length direction of the frame body, the two first guide rails 514 are respectively arranged at two ends of the movable beam 51, two ends of the movable beam 51 are respectively connected with the first sliding blocks 515, the first sliding blocks 515 are matched with the corresponding first guide rails 514, the first servo motor 511 is fixed on the movable beam 51, the first servo motor 511 is in driving connection with the first gear 512, the first gear 512 is matched with the first rack 513, and the first rack 513 is fixed on the frame body 1 along the first guide rails 514.

The Y-axis driving mechanism includes a second servo motor 541, a second gear 542, a second rack 543, second guide rails 544 and a second slider 545, the second guide rails 544 are fixed on the movable beam 51 along the width direction of the frame body, the two second guide rails 544 are respectively disposed at two ends of the sliding table 54, the two ends of the sliding table 54 are respectively connected to the second slider 545, the second slider 545 is matched with the corresponding second guide rails 544, the second servo motor 541 is fixed on the sliding table 54, the second servo motor 541 is connected to the second gear 542 in a driving manner, the second gear 542 is matched with the second rack 543, and the second rack 543 is fixed on the movable beam 51 along the second guide rails 544.

The Z-axis driving mechanism comprises a third servo motor 521, a standard screw rod sliding table 522 and a moving frame 523, the third servo motor 521 is in driving connection with the standard screw rod sliding table 522, the standard screw rod sliding table 522 is arranged along the height direction of the frame body, and the standard screw rod sliding table 522 is in transmission connection with the moving frame 523.

Wherein, the rotary driving mechanism includes a rotary cylinder 531, a bearing seat 532, a rotary mounting plate 533 and a rotary shaft 534, the rotary cylinder 531 and the bearing seat 532 are respectively fixed on the moving frame 523, the bearing seat 532 supports and rotatably connects the rotary shaft 534, the rotary cylinder 531 is in transmission connection with the rotary shaft 534, the rotary shaft 534 is fixedly connected with the rotary mounting plate 533, the rotary mounting plate 533 is located below the lifting arm 52, the rotary mounting plate 533 is fixedly connected to the top of the clamping assembly 53 and is in transmission connection with the lifting arm 52, the rotary cylinder 531 drives the rotary mounting plate 533 to reciprocate within 90 ° through the rotary shaft 534, thereby driving the clamping assembly 53 to switch back and forth between two states along the length direction of the frame body and along the.

Wherein, the rotary station 4 comprises a fourth servo motor 411, a fourth gear 412, a speed reducer 413, a crossed roller bearing 414, a rotary tooling plate 415, a drag chain groove 416 and a drag chain 417, the fourth servo motor 411 is connected with the fourth gear 412 through the speed reducer 413 in a transmission way, the fourth gear 412 is matched with the outer ring of the crossed roller bearing 414, the crossed roller bearing 414 is horizontally arranged, the rotary tooling plate 415 is fixedly arranged on the outer ring of the crossed roller bearing 414, the drag chain groove 416 is in an arc structure and is coaxial with the crossed roller bearing 414, the drag chain groove 416 is arranged outside the crossed roller bearing 414, a movable partition plate 418 is arranged in the drag chain groove 416, the partition plate 418 is in an arc structure concentric with the drag chain groove 416, the partition plate 418 is fixedly connected with the rotary tooling plate 415 through two drag chain connecting plates 419 at two ends, the partition plate 418 divides the drag chain groove 416 into an inner arc groove 420 and an outer arc groove 421, the two ends of the inner arc groove 420 are communicated with the outer, the drag chain 417 is arranged in the drag chain groove 416, one end of the drag chain 417 is fixed in the outer arc groove 421, the other end of the drag chain 417 bypasses the partition plate 418 and is arranged in the inner arc groove 420 and is fixedly connected with a drag chain connecting plate 419, the fourth servo motor 411 drives the rotary tooling plate 415 to rotate for 180 degrees in a reciprocating manner through the speed reducer 413, the fourth gear 412 and the crossed roller bearing 414, namely the rotary tooling plate 415 rotates for 180 degrees in a forward direction and exchanges the positions of the two positioning clamps 6, and rotates for 180 degrees in a reverse direction and exchanges the positions of the two positioning clamps 6 in a reciprocating manner.

Wherein, the rotating tool plate 415 is provided with a central opening, and the bottom of the joint mechanical arm 7 is arranged in the central opening.

Wherein, the positioning fixture 6 comprises a left base 611, a middle base 612 and a right base 613 which are respectively fixed, a left positioning surface 61 is vertically arranged on the left base 611, a right positioning surface 62 is movably arranged on the right base 613, the right positioning surface 62 is parallel to the left positioning surface 61, a fifth servo motor 614 is in driving connection with the right positioning surface 62 to drive the right positioning surface 62 to be close to or far away from the left positioning surface 61, bearing rollers 615 are respectively arranged at two ends of the middle base 612, a fixed positioning pulley 616 is arranged at one end of the middle base 612, a movable positioning pulley 617 is arranged at the other end, a sixth servo motor 618 is in driving connection with the movable positioning pulley 617 to drive the movable positioning pulley to be close to or far away from the fixed positioning pulley 616, an inductive switch 619 is arranged at the movable positioning pulley 617, the inductive switch 619 is used for detecting that the graphite boat falls on or leaves the bearing rollers 615 and controlling the telescopic action of the sixth servo motor 618, a capacitance sensor 620 is, the capacitance sensor 620 is used for sensing the graphite boat pressure on the left positioning surface 61 and controlling the fifth servo motor 614 to stop operating.

The graphite boat falls between the left positioning surface 61 and the right positioning surface 62 and is placed on the bearing roller 615, the movable positioning pulley 617 moves towards the fixed positioning pulley 616, the graphite boat is clamped between the fixed positioning pulley 616 and the movable positioning pulley 617, the graphite boat is fixed in the length direction of the graphite boat, the right positioning surface 62 moves towards the left positioning surface 61, the graphite boat is clamped between the left positioning surface 61 and the right positioning surface 62, the graphite boat is fixed in the width direction of the graphite boat, and therefore the graphite boat is fixed.

Wherein, left locating surface 61 comprises vertical interval arrangement's fixed position strip 621, and right locating surface 62 includes activity location strip 622, spring 623, guide bar 624 and guide arm anticreep retaining ring 625, and guide bar 624 one end fixed connection activity location strip 622, the other end pass right base 613 and connect guide arm anticreep retaining ring 625, and outside the guide bar 624 was cup jointed to the spring 623, the spring 623 both ends butt activity location strip 622 and right base 613 respectively.

The graphite boat carrying process using the graphite boat carrying equipment comprises the following steps:

s1: the rotary clamping jaw 5 is stopped above the feeding station 2;

s2: the rotary clamping jaw 5 descends to grab the graphite boat to be processed and then ascends;

s3: the rotary clamping jaw 5 moves to the rotary station 4 along the length direction and the width direction of the frame body and rotates the graphite boat to be processed by 90 degrees, so that the direction of the graphite boat to be processed is changed to be along the width direction of the frame body;

s4: the rotary clamping jaw 5 moves to the position above a positioning clamp 6 at the near end of the rotary station 4 and stops, then the rotary clamping jaw 5 descends, the graphite boat to be processed falls into the positioning clamp 6, and the positioning clamp 6 acts to fix the graphite boat to be processed;

s5: the graphite boat to be processed is placed down by the rotary clamping jaw 5 and then ascended, the rotary station 4 rotates 180 degrees, and the two positioning clamps 6 are switched to the opposite positions, so that the graphite boat to be processed is turned to the far end, and the processed graphite boat is turned to the lower part of the rotary clamping jaw 5;

s6: the joint mechanical arm 7 delivers the graphite boat to be processed into the process furnace, and the rotary clamping jaw 5 descends to grab the processed graphite boat and then ascends;

s7: the rotary clamping jaw 5 moves towards the discharging station 3 along the length direction and the width direction of the frame body and rotates the processed graphite boat by 90 degrees, so that the direction of the processed graphite boat is changed into the direction along the length direction of the frame body;

s8: the rotary clamping jaw 5 is stopped above the discharging station 3;

s9: the rotary clamping jaw 5 descends to place the processed graphite boat on the discharging station 3 and then lifts up;

s10: the rotary clamping jaw 5 is translated to the feeding station 2 along the width direction of the frame body, in the process, the joint mechanical arm 7 takes out the processed graphite boat from the process furnace and places the graphite boat in the positioning clamp 6 at the far end of the rotary station 4, and the steps are repeated.

In light of the above, the present invention is not limited to the above embodiments, and various changes and modifications can be made by the worker without departing from the scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (4)

1. Rotatory station, its characterized in that: the rotary station comprises a fourth servo motor, a fourth gear, a speed reducer, a crossed roller bearing, a rotary tooling plate, a drag chain groove and a drag chain, wherein the fourth servo motor is connected with the fourth gear through the transmission of the speed reducer, the fourth gear is matched with the outer ring of the crossed roller bearing, the crossed roller bearing is horizontally arranged, the rotary tooling plate is fixedly arranged on the outer ring of the crossed roller bearing, the drag chain groove is of an arc structure and is coaxial with the crossed roller bearing, the drag chain groove is arranged on the outer side of the crossed roller bearing, a movable partition plate is arranged in the drag chain groove, the partition plate is of an arc structure concentric with the drag chain groove, the partition plate is fixedly connected with the rotary tooling plate through two drag chain connecting plates at two ends, the partition plate divides the drag chain groove into an inner arc groove and an outer arc groove, the two ends of the inner arc groove are communicated with the two ends of the outer arc groove, and the drag chain is arranged in, one end of the drag chain is fixed in the outer arc-shaped groove, and the other end of the drag chain is arranged in the inner arc-shaped groove by bypassing the partition plate and is fixedly connected with a drag chain connecting plate.

2. The rotary station of claim 1, wherein: and a central opening is formed in the rotary tooling plate, and the bottom of the joint mechanical arm is arranged in the central opening.

3. The rotary station of claim 1, wherein: two positioning clamps are symmetrically arranged on the rotary tooling plate along the center of the rotary tooling plate.

4. The rotary station of claim 3, wherein: the positioning fixture comprises a left base, a middle base and a right base which are respectively fixed, a left positioning surface is vertically arranged on the left base, a right positioning surface is movably arranged on the right base, the right positioning surface is parallel to the left positioning surface, a fifth servo motor is connected with the right positioning surface in a driving way so as to drive the right positioning surface to be close to or far away from the left positioning surface, bearing rollers are respectively arranged at two ends of the middle base, a fixed positioning pulley is arranged at one end of the middle base, a movable positioning pulley is arranged at the other end of the middle base, a sixth servo motor is connected with the movable positioning pulley in a driving way so as to drive the movable positioning pulley to be close to or far away from the fixed positioning pulley, an induction switch is arranged at the movable positioning pulley and is used for detecting that a graphite boat falls onto or leaves the bearing rollers and controlling the sixth servo motor to stretch, a capacitance sensor is arranged on the left positioning surface and used for sensing the pressure of the, and controlling the fifth servo motor to stop operating.

Images