CN113146279A

CN113146279A - Workstation for digit control machine tool

Info

Publication number: CN113146279A
Application number: CN202110482923.5A
Authority: CN
Inventors: 邵树锋
Original assignee: Zhejiang Industry Polytechnic College
Current assignee: Zhejiang Industry Polytechnic College
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2021-07-23

Abstract

The invention discloses a workbench for a numerically controlled machine tool, which is characterized in that it comprises a base, a frame is arranged in the middle of the upper part of the base, the frame is arranged along the length direction of the base, and a shaft sleeve is rotatably arranged in the frame, and the shaft sleeve The front end is connected with a chuck, the rear end of the shaft sleeve is arranged through the frame, the upper part of the frame is provided with a rotating motor, the drive shaft of the rotating motor is connected with the part of the shaft sleeve passing through the frame through a transmission belt, and the rear side of the frame is located on the two sides of the shaft sleeve. A clamping cylinder is respectively provided at the position of the side, and the front end of the piston rod of the clamping cylinder is connected with a clamping block. The invention can conveniently carry out the replacement of the tool, thereby improving the processing efficiency and adapting to the impossible processing requirements.

Description

Workstation for digit control machine tool

Technical Field

The invention relates to the technical field of numerical control machines, in particular to a workbench for a numerical control machine.

Background

The numerical control machine tool is an automatic machine tool with a program control system, and the numerical control machine tool sends various control signals through operation processing by a numerical control device to control the action of the machine tool and automatically machine parts according to the shape and the size required by a drawing.

In current digit control machine tool, the sword platform is in on the mount all the time, when changing the cutter, can only adopt artificial mode to dismantle the back with the cutter from the sword platform and install newly again, need spend a large amount of time and energy, can't reach high-efficient processing.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a workbench for a numerical control machine tool.

In order to achieve the purpose, the invention provides the following technical scheme to realize the purpose:

a workbench for a numerical control machine tool comprises a base, wherein a rack is arranged in the middle of the upper portion of the base and arranged along the length direction of the base, a shaft sleeve is arranged in the rack in a rotating mode, a chuck is connected to the front end of the shaft sleeve, the rear end of the shaft sleeve penetrates out of the rack, a rotating motor is arranged on the upper portion of the rack, a driving shaft of the rotating motor is connected with the portion, penetrating out of the rack, of the shaft sleeve through a driving belt, clamping cylinders are respectively arranged at positions, located on two sides of the shaft sleeve, of the rear side of the rack, and clamping blocks are connected to the front ends of piston rods of the clamping cylinders;

the upper part of the base is provided with a plurality of supporting columns at the front side of the rack, the supporting columns are rotatably provided with gear rings, cutter exchange rings are fixed on the gear rings, a plurality of cutter mechanisms are arranged on the cutter exchange rings, the base is provided with a first driving motor, the first driving motor is in driving connection with a first driving gear, the first driving gear is meshed with the gear rings, a plurality of pushing mechanisms are arranged at the upper part of the base at the outer side of the cutter exchange rings, a plurality of lifting mechanisms and positioning mechanisms are arranged at the upper part of the base at the inner side of the cutter exchange rings, and the lifting mechanisms, the pushing mechanisms and the positioning mechanisms are correspondingly arranged;

the positioning mechanism comprises a first supporting seat arranged on the mechanism, a bearing block is arranged at the upper part of the first supporting seat, a first limiting block is arranged at the upper part of the bearing block, a limiting column is arranged at the inner side of the first limiting block, a plurality of adjusting blocks are arranged between the bearing block and the first supporting seat, and the bearing block and the adjusting blocks are fixed on the first supporting seat through fixing bolts;

the pushing mechanism comprises a second supporting seat arranged on the base, a first air cylinder is arranged on the side face of the second supporting seat, the top of a piston rod of the first air cylinder is connected with a first lifting block, a first supporting block is mounted on the first lifting block through a first fixing block, a second air cylinder is arranged on the upper portion of the first supporting block, the front end of a piston rod of the second air cylinder is connected with a transverse moving block, a third air cylinder is arranged on one side, close to the second air cylinder, of the transverse moving block, a piston rod of the third air cylinder penetrates through the transverse moving block, the front end of the piston rod of the third air cylinder is connected with a fixing column, and a first fixing hole is formed in the upper portion of the fixing column;

the base is provided with a mounting groove, the lifting mechanism is partially positioned in the mounting groove, the lifting mechanism comprises a rotating seat and a second driving motor, the rotating seat and the second driving motor are positioned in the mounting groove, a rotating shaft is rotatably arranged at the upper part of the rotating seat, a second driven gear is connected to the upper part of the rotating shaft, a first lead screw is connected to the upper part of the second driven gear, a first lead screw nut is sleeved on the first lead screw, a second lifting block is fixed on the first lead screw nut, a lifting rod is arranged at the upper part of the second lifting block, the second driving motor is in driving connection with a second driving gear, and the second driving gear is meshed with the second driven gear;

the cutter mechanism comprises a second supporting block arranged on the cutter exchange ring, a cutter mounting block is arranged at the upper part of the second supporting block through a second fixing block, a cutter seat is arranged at one end, positioned at the inner side of the cutter exchange ring, of the upper part of the cutter mounting block, a cutter is arranged on the cutter seat, a limiting hole matched with the limiting column is formed in one end, provided at the cutter seat, of the cutter mounting block, a lifting hole corresponding to the position of the lifting rod is formed in the lower part of the cutter mounting block, a limiting hole and a second fixing hole are formed in one side, close to the pushing mechanism, of the cutter mounting block, the limiting hole is positioned above and communicated with the lifting hole in one side, close to the pushing mechanism, of the cutter mounting block, the upper part of the limiting hole is communicated with the second fixing hole, the limiting hole is perpendicular to the lifting hole, a fixing sleeve is fixedly arranged in the limiting hole, a linkage rod penetrates through the fixing sleeve, one end of the linkage rod extends into the lifting hole below and is connected with a trigger plate, the other end of the connecting rod is positioned above the second fixing hole after being bent, the lower part of the connecting rod is connected with a fixing pin, the fixing pin is matched with the first fixing hole, and a spring is sleeved on a linkage rod positioned between the fixing sleeve and the trigger plate;

the position that base upper portion corresponds to the chuck front side is equipped with cutting mechanism, cutting mechanism is including being fixed in the third supporting seat on base upper portion, third supporting seat upper portion is connected with the guide block, it is provided with the cutting knife support to slide on the guide block, third supporting seat side is equipped with the fourth cylinder, the piston rod top of fourth cylinder is connected with the cutting knife support, cutting knife support upper portion is equipped with the cutting knife support, it is provided with the cutting knife pivot to rotate on the cutting knife support, be fixed with the cutting knife in the cutting knife pivot, be equipped with the cutting motor in the cutting knife support, be connected through the drive belt between the output shaft of cutting motor and the cutting knife pivot.

As preferred, the position that base upper portion is located frame the place ahead right side is equipped with the material collecting frame, is equipped with the feeding agencies that is used for removing the pipe fitting after processing to material collecting frame department in the frame.

Preferably, a slideway is arranged on the frame, a sliding block is arranged in the slideway in a sliding manner, the driving mechanism comprises a material taking platform, a drawing motor is arranged on the sliding block, one end of the material taking platform extends into the sliding block, a driving shaft of the drawing motor vertically extends into the sliding block and is connected with the material taking platform, a lifting platform is arranged in the middle of the material taking platform, a rack bar is connected to the upper part of the lifting platform, a motor frame is connected to the upper part of the material taking platform, a third driving motor is arranged on the motor frame, a driving shaft of the third driving motor is connected with a third driving gear, the third driving gear is matched with the rack bar, a rotating column is rotatably arranged on the lifting platform, a third driven gear is connected to the upper part of the rotating column, two fixed claw arms which are oppositely arranged are hinged to the lower part of the rotating column, a connecting plate is connected to the side surface of the rotating column, a clamping cylinder is hinged to the connecting plate, and the front end of a piston rod of the clamping cylinder is hinged to the side surface of the fixed claw arm, the left side and the right side of the upper part of the material taking platform are respectively provided with a first mounting groove and a second mounting groove, the front part and the rear part of the inner side of the first mounting groove are respectively provided with a sliding rod seat, a sliding rod is connected between the two sliding rod seats which are opposite in the front and the rear, a mounting plate is arranged on the sliding rod in a sliding way, the mounting plates on the front side and the rear side are respectively provided with a fifth air cylinder and a sixth air cylinder, piston rods of the fifth air cylinder and the sixth air cylinder are respectively connected with a first rack and a second rack, the front side and the rear side of the inner side of the second mounting groove are respectively provided with a rotating shaft seat, the rotating shaft seats on the front side and the rear side are respectively provided with a second screw rod and a third screw rod, the opposite ends of the second screw rod and the second screw rod are respectively connected with a first bevel gear and a second bevel gear, a fourth driving motor is arranged at the right side of the inner part of the second mounting groove, a driving shaft of the fourth driving motor is connected with a driving bevel gear, the driving bevel gear is meshed with the first bevel gear and the second bevel gear, the second screw rod and the third screw rod are respectively sleeved with a second screw rod nut and a third screw rod nut, the first rack is in sliding connection with the second screw rod nut, and the second rack is in sliding connection with the third screw rod nut.

Preferably, the top end of the toothed bar is connected with a hanging plate, the upper part of the material taking platform is provided with a supporting motor, and a driving shaft of the supporting motor is connected with a supporting bar.

Preferably, a circle of groove is formed in the lower portion of the gear ring, the upper portion of the supporting column is connected with a positioning block and a third supporting block, the positioning block and the third supporting block are located in the groove, first balls are arranged on the top and the left side and the right side of the third supporting block in a rotating mode, a limiting piece is arranged in the groove at the positions on the two sides of the positioning block through a fixing piece, and a plurality of second balls are arranged on the inner side of the limiting piece in a rotating mode.

Preferably, the lifting mechanism further comprises a guide post fixed on the base, the guide post penetrates through the second lifting block, a second limiting block is connected to the top of the guide post, and an anti-collision pad is arranged on the lower portion of the second limiting block.

Preferably, the adjusting blocks are arranged in a staggered mode, notches for the fixing bolts to penetrate through are formed in the middle of the adjusting blocks, a positioning column is arranged on one side of each adjusting block, a positioning hole is formed in the other side of each adjusting block, and the positions of the positioning columns and the positioning holes are symmetrical relative to the notches.

Preferably, a feeding mechanism is arranged on the base behind the shaft sleeve, the feeding mechanism comprises a feeding cylinder fixed on the base, a sliding rail arranged on the base and a sliding plate arranged on the sliding rail in a sliding manner, a supporting wall is vertically arranged on the sliding plate, a fixed cylinder is arranged on the upper portion of the supporting wall, a fixed claw is arranged on a piston rod of the fixed cylinder, a connecting arm is connected to the side face of the sliding plate, and a piston rod of the feeding cylinder is connected with the connecting arm.

Preferably, the rear side of the sliding plate is provided with a material pushing mechanism, the material pushing mechanism comprises a supporting arm connected with the sliding plate, the supporting arm is provided with a rotating motor, a driving shaft of the rotating motor is connected with a rotating arm, one end of the rotating arm, far away from the rotating motor, is rotatably provided with a threaded sleeve, a screw is connected with the threaded sleeve in a threaded manner, the middle position of the rotating arm is provided with a stepping motor, and a driving belt is connected between the driving shaft of the stepping motor and the threaded sleeve.

Compared with the prior art, the invention has the beneficial effects that: through the matching among the lifting mechanism, the pushing mechanism and the positioning mechanism, the cutter mechanism conveyed by the cutter exchange ring can be assembled to a specified position to process the pipe fitting; after the machining is finished, the cutter mechanism can be arranged on the cutter exchange ring again to prepare for the next use.

Drawings

FIG. 1 is a top view of the present invention;

FIG. 2 is an enlarged schematic view at A in FIG. 1;

FIG. 3 is an enlarged schematic view at A in FIG. 2;

FIG. 4 is a side view of the present invention;

FIG. 5 is a schematic view of the assembly of the ring gear of the present invention;

FIG. 6 is an enlarged schematic view at A in FIG. 5;

FIG. 7 is an enlarged schematic view at A of FIG. 6;

FIG. 8 is a schematic view of the cutting mechanism of the present invention;

FIG. 9 is a schematic view of the lifting mechanism of the present invention;

FIG. 10 is a schematic view of the construction of the cutter mechanism of the present invention;

FIG. 11 is an enlarged view taken at A in FIG. 10;

FIG. 12 is a schematic view of a material extracting mechanism according to the present invention;

FIG. 13 is a top view of the take-out mechanism of the present invention;

FIG. 14 is a schematic view of the present invention showing the structure of the fixed claw arm;

FIG. 15 is a schematic view of the feeding mechanism of the present invention;

fig. 16 is a schematic structural diagram of an adjusting block in the present invention.

Reference numerals: a base 1; a frame 2; a cutter changing ring 3; a cutter mechanism 4; a first drive gear 5; a lifting mechanism 6; a cutting mechanism 7; rotating the motor 8; a feeding mechanism 9; a shaft sleeve 10; a clamping cylinder 11; a clamping block 12; rotating the rod 13; a first driven gear 14; a rotating arm 15; a drive mechanism 16; a cross bar 17; a pneumatic claw 18; a conveyor belt 19; a support claw 20; a slide 21; a material taking mechanism 22; a material receiving frame 23; a support column 24; a ring gear 25; a first drive motor 26; a first support base 27; an adjustment block 28; a first stopper 29; a material pushing mechanism 30; a second support seat 31; the first cylinder 32; a first lifting block 33; a first support block 34; a second support block 35; a chuck 36; a slider 37; a second fixing block 38; a first fixing block 39; a cutter mounting block 40; a tool holder 41; a cutter 42; a second cylinder 43; a traverse block 44; a third cylinder 45; a carrier block 46; a stopper post 47; a third support seat 48; a fourth cylinder 49; a guide block 50; a cutter supporter 51; a cutter holder 52; a cutting knife 53; a cutter spindle 54; a cutting motor 55; a groove 56; a positioning block 57; a third support block 58; a first ball 59; a stopper piece 60; a second ball 61; a fixing piece 62; a mounting groove 63; a rotating base 64; a rotating shaft 65; a second driven gear 66; a first lead screw 67; a second drive motor 68; a second drive gear 69; a first feed screw nut 70; a second lifting block 71; a lifting rod 72; a guide post 73; a second stopper 74; a crash pad 75; a fixing bolt 76; a notch 77; a positioning post 78; a positioning hole 79; a lifting hole 80; a stopper hole 81; a second fixing hole 82; a trigger plate 83; a securing sleeve 84; a linkage rod 85; a spring 86; a fixing pin 87; a guide rod 88; a material taking platform 89; a lifting table 90; a rotating post 91; a third drive motor 92; a third drive gear 93; a rack bar 94; a hanging plate 95; a first rack 96; a first mounting groove 97; a slide bar seat 98; a slide bar 99; a fifth cylinder 100; a sixth cylinder 101; a second rack 102; a third driven gear 103; a support motor 104; a support strip 105; a rotating shaft seat 107; a second lead screw 108; a third lead screw 109; a first bevel gear 110; a second bevel gear 111; a fourth drive motor 112; a drive bevel gear 113; a connecting plate 114; a reinforcing plate 115; a fixed jaw arm 116; a rubber pad 117; a clamp cylinder 118; a slide rail 119; a sliding plate 120; the support wall 121; a stationary cylinder 122; a fixed claw 123; a feed cylinder 124; a connecting arm 125; a support arm 126; a rotating electric machine 127; a rotating arm 128; a threaded sleeve 129; a screw 130; a stepping motor 131; a fixing post 132; a first fixing hole 133; a mounting plate 134; a second feed screw nut 135; a third feed screw nut 136; a motor frame 137; a furling motor 138.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1-16, a workbench for a numerical control machine tool, including a base 1, a frame 2 is arranged at an upper middle position of the base 1, the frame 2 is arranged along a length direction of the base 1, a shaft sleeve 10 is arranged in the frame 2 in a rotating manner, a chuck 36 is connected to a front end of the shaft sleeve 10, a rear end of the shaft sleeve 10 penetrates out of the frame 2, a rotating motor 8 is arranged at an upper portion of the frame 2, a driving shaft of the rotating motor 8 is connected with a portion, penetrating out of the frame 2, of the shaft sleeve 10 through a driving belt, a pipe to be processed is inserted from a rear side of the shaft sleeve 10 and penetrates out of the chuck 36, the pipe is clamped by the chuck 36, and the rotating motor 8 drives the shaft sleeve 10 to rotate, so as to drive the pipe to rotate to process.

The upper part of a base 1 is provided with a plurality of supporting columns 24 at the front side of a frame 2, the supporting columns 24 are rotatably provided with gear rings 25, the gear rings 25 are fixed with a cutter exchange ring 3, the cutter exchange ring 3 is provided with a plurality of cutter mechanisms 4, the base 1 is provided with a first driving motor 26, the first driving motor 26 is in driving connection with a first driving gear 5, the first driving gear 5 is meshed with the gear rings 25, the upper part of the base 1 at the outer side of the cutter exchange ring 3 is provided with a plurality of pushing mechanisms, the upper part of the base 1 at the inner side of the cutter exchange ring 3 is provided with a plurality of lifting mechanisms 6 and positioning mechanisms, the lifting mechanisms 6, the pushing mechanisms and the positioning mechanisms are correspondingly arranged, a lifting mechanism 6, the pushing mechanism and the positioning mechanisms are arranged in a group, the left side and the right side of a processed pipe are respectively arranged in a group, and the first driving gear, thereby driving the cutter mechanisms 4 on the cutter exchanging ring 3 to move among the lifting mechanisms 6, the pushing mechanisms and the positioning mechanisms, and using the corresponding cutter mechanisms 4 at various positions according to the processing requirements. After the lifting mechanism 6 moves to the corresponding position and the cutter mechanism 4 is lifted, the pushing mechanism pushes the cutter mechanism 4 to the corresponding positioning mechanism, so that the positioning and installation of the cutter mechanism 4 are completed, and the pipe fitting is machined.

The positioning mechanism comprises a first supporting seat 27 arranged on the mechanism 1, a bearing block 46 is arranged on the upper portion of the first supporting seat 27, a first limiting block 29 is arranged on the upper portion of the bearing block 46, a limiting column 47 is arranged on the inner side of the first limiting block 29, a plurality of adjusting blocks 28 are arranged between the bearing block 46 and the first supporting seat 27, the bearing block 46 and the adjusting blocks 28 are fixed on the first supporting seat 27 through fixing bolts 76, the adjusting blocks 28 are arranged and can be used for adjusting the height of the bearing block 46 and the first limiting block 29, the cutter mechanism 4 can be limited at a specified height, and processing can be carried out according to corresponding parameters.

Pushing mechanism is including setting up the second supporting seat 31 on base 1, second supporting seat 31 side is equipped with first cylinder 32, the piston rod top of first cylinder 32 is connected with first lifting block 33, install first supporting block 34 through first fixed block 39 on the first lifting block 33, first supporting block 34 upper portion is equipped with second cylinder 43, the piston rod front end of second cylinder 43 is connected with sideslip piece 44, sideslip piece 44 is equipped with third cylinder 45 near one side of second cylinder 43, the piston rod of third cylinder 45 runs through sideslip piece 44 and the front end is connected with fixed column 132, first fixed orifices 133 has been seted up on fixed column 132 upper portion.

The mounting groove 63 has been seted up on the base 1, the lifting mechanism 6 part is located the mounting groove 63, the lifting mechanism 6 is including rotating seat 64 and the second driving motor 68 that is located the mounting groove 63, it is provided with axis of rotation 65 to rotate seat 64 upper portion, axis of rotation 65 upper portion is connected with second driven gear 66, second driven gear 66 upper portion is connected with first lead screw 67, the cover is equipped with first screw-nut 70 on the first lead screw 67, be fixed with second elevator 71 on the first screw-nut 70, second elevator 71 upper portion is equipped with lifter 72, second driving motor 68 drive is connected with second drive gear 69, second drive gear 69 meshes with second driven gear 66 mutually.

The cutter mechanism 4 comprises a second supporting block 35 arranged on the cutter exchange ring 3, a cutter mounting block 40 is arranged on the upper portion of the second supporting block 35 through a second fixing block 38, a cutter seat 41 is arranged at one end, located on the inner side of the cutter exchange ring 3, of the upper portion of the cutter mounting block 40, a cutter 42 is arranged on the cutter seat 41, a limiting hole 81 matched with the limiting column 47 is formed in one end, located on the cutter seat 41, of the cutter mounting block 40, a lifting hole 80 corresponding to the position of the lifting rod 72 is formed in the lower portion of the cutter mounting block 40, a limiting hole 81 and a second fixing hole 82 are formed in one side, close to the pushing mechanism, of the cutter mounting block 40, the limiting hole 81 is located above and communicated with the lifting hole 80 in one side, close to the pushing mechanism, the upper portion of the limiting hole 81 is communicated with the second fixing hole 82, the limiting hole 81 is perpendicular to the lifting hole 80, and a fixing sleeve 84 is fixedly arranged inside the limiting hole 81, wear to be equipped with the gangbar 85 in the fixed cover 84, gangbar 85 one end is stretched into in the below lifting hole 80 and is connected with and triggers the board 83, the other end is located the top and the sub-unit connection that second fixed orifices 82 after buckling and is had fixed pin 87, fixed pin 87 cooperatees with first fixed orifices 133, the cover is equipped with spring 86 on the gangbar 85 that is located between fixed cover 84 and the trigger board 83, spring 86 both ends link to each other with fixed cover 84 and trigger board 83 are fixed respectively, spacing hole 81 top is equipped with guide bar 88, the lower extreme of guide bar 88 penetrates and sets up in the gangbar 85.

When the tool changing ring 3 conveys the tool mechanism 4 to the position above the corresponding lifting mechanism 6, the second driving motor 68 drives the first lead screw 67 to rotate through the matching of the second driving gear 69 and the second driven gear 66, so that the second lifting block 71 is driven to ascend through the first lead screw nut 70.

The second lifting block 71 lifts the lifting rod 72 to a certain height, so that the length of the lifting rod 72 is reduced, and the swinging of the lifting rod in the extending process is avoided.

When the tool 42 is loaded, the lifting rod 72 is extended and the upper end thereof is inserted into the lifting hole 80 at the lower portion of the upper tool mounting block 40, so that the tool mounting block 40 is lifted away from the second fixing block 38 to reach a position flush with the pushing mechanism. When the upper end of the lifting rod 72 is inserted into the lifting hole 80, the lifting rod pushes the trigger plate 83 upwards at the same time, and the trigger plate 83 drives the fixing pin 87 to ascend through the linkage rod 85. The piston rod of the second cylinder 43 extends to drive the transverse moving block 44 to be close to the cutter mounting block 40, and the linkage rod 85 drives the fixing pin 87 to ascend to be separated from the second fixing hole 82, so that the piston rod of the third cylinder 45 extends to drive the fixing column 132 to extend into the second fixing hole 82 of the cutter mounting block 40. After the fixing post 132 extends into the second fixing hole 82, the lifting rod 72 is shortened to be disengaged from the lifting hole 80, and the trigger plate 83 is driven by the linkage rod 85 to descend in the process of returning to the original position under the action of the elastic force of the spring 86, so that the fixing pin 87 is inserted into the first fixing hole 133 of the fixing post 132. At this time, the fixing column 132 and the cutter mounting block 40 are relatively fixed, and the fixing column 132 can drive the cutter mounting block 40 to move back and forth. The piston rod of the second cylinder 43 is extended again to push the tool mounting block 40 forward, so that the front end of the tool mounting block 40 is clamped into the first limiting block 29, and meanwhile, the limiting column 47 is inserted into the limiting hole 81 of the tool mounting block 40, and the position of the tool mounting block 40 is limited by combining the two. The carrier block 46 supports the tool mounting block 40 against it.

When the cutter 42 is detached, the piston rod of the second air cylinder 43 is contracted by the engagement of the fixing pin 87 inserted into the fixing column 132, and the cutter mounting block 40 is brought above the lifting mechanism 6. The lifting rod 72 is extended and its upper end is again inserted into the lifting hole 80. The lifting rod 72 lifts the fixing pin 87 to be separated from the first fixing hole 133 of the fixing column 132 through the cooperation of the trigger plate 83 and the linkage rod 85. After the piston rod of the third cylinder 45 is contracted, the fixing post 132 is disengaged from the second fixing hole 82. The lifting rod 72 is retracted to lower the tool mounting block 40 to re-engage the second mounting block 38 on the second assembly block 35.

The position that base 1 upper portion corresponds to chuck 36 front side is equipped with cutting mechanism 7, cutting mechanism 7 is including being fixed in the third supporting seat 48 on base 1 upper portion, third supporting seat 48 upper portion is connected with guide block 50, it is provided with cutting knife support 51 to slide on the guide block 50, third supporting seat 48 side is equipped with fourth cylinder 49, the piston rod top of fourth cylinder 49 is connected with cutting knife support 51, cutting knife support 51 upper portion is equipped with cutting knife support 52, it is provided with cutting knife pivot 54 to rotate on the cutting knife support 52, be fixed with cutting knife 53 on the cutting knife pivot 54, be equipped with cutting motor 55 in the cutting knife support 51, be connected through the drive belt between cutting motor 55's output shaft and the cutting knife pivot 54. The piston rod of the fourth cylinder 49 drives the cutter support 51 to ascend, so that the cutter 53 ascends to contact with the processed pipe, the pipe is cut off, and the processed pipe is obtained.

The position that 2 rear sides of frame are located axle sleeve 10 both sides is equipped with a centre gripping cylinder 11 respectively, and centre gripping cylinder 11's piston rod front end is connected with grip block 12, and grip block 12 is the arc, and the shape matches with the outline of axle sleeve 10.

When cutting the pipe fitting, the rotating motor 8 stops operating, and the centre gripping cylinder 11 drives simultaneously and adds the piece 12 and remove to axle sleeve 10, and two grip blocks 12 press from both sides axle sleeve 10 tight fixedly to make the pipe fitting fixed in order to make things convenient for the cutting.

Preferably, a material receiving frame 23 is arranged at the position, located on the right side in front of the machine frame 2, on the upper portion of the base 1, and a material taking mechanism 22 for moving the processed pipe fitting to the material receiving frame 23 is arranged on the machine frame 2. The material taking mechanism 22 moves the cut pipe fitting to the material receiving rack 23 for collection.

Preferably, a slide rail 21 is arranged on the frame 2, the slide rail 21 is arranged along the length direction of the frame 2, a slide block 37 is arranged in the slide rail 21 in a sliding manner, the slide block 37 is driven by an external mechanism (an air cylinder, a hydraulic cylinder and the like) to slide in the slide rail 21, the driving mechanism 22 comprises a material taking platform 89, a furling motor 138 is arranged on the slide block 37, one end of the material taking platform 89 extends into the slide block 37, a driving shaft of the furling motor 138 vertically extends into the slide block 37 and is connected with the material taking platform 89, a lifting platform 90 is arranged at the middle position of the material taking platform 89, a toothed bar 94 is connected to the upper part of the lifting platform 90, a motor frame 137 is connected to the upper part of the material taking platform 89, a third driving motor 92 is arranged on the motor frame 137, a driving shaft of the third driving motor 92 is connected with a third driving gear 93, the third driving gear 93 is matched with the toothed bar 94, a rotating column 91 is rotatably arranged on the lifting platform 90, a third driven gear 103 is connected to the upper part of the rotating column 91, two fixed claw arms 116 which are oppositely arranged are hinged to the lower portion of the rotating column 91, a rubber pad 117 is arranged on the inner side of each fixed claw arm 116, the rubber pad 117 is used for increasing friction, and a pipe fitting can be clamped more firmly, a connecting plate 114 is connected to the side face of the rotating column 91, a clamping cylinder 118 is hinged to the connecting plate 114, the front end of a piston rod of the clamping cylinder 118 is hinged to the side face of each fixed claw arm 116, a reinforcing plate 115 is connected between the upper portion of the connecting plate 114 and the side face of the rotating column 91, a first mounting groove 97 and a second mounting groove 106 are respectively formed in the left side and the right side of the upper portion of the material taking platform 89, sliding rod bases 98 are respectively arranged on the front portion and the rear portion of the inner side of the first mounting groove 97, a sliding rod 99 is connected between the two sliding rod bases 98 which are oppositely arranged, a mounting plate 134 is arranged on the sliding rod 99, a fifth cylinder 100 and a sixth cylinder 101 are respectively arranged on the mounting plates 134 on the front side and the rear side, and piston rods of the fifth cylinder 100 and the sixth cylinder 101 are respectively connected with a first rack 96 and a second rack 102, the front side and the rear side of the inner side of the second mounting groove 106 are respectively provided with a rotating shaft seat 107, the rotating shaft seats 107 on the front side and the rear side are respectively provided with a second screw rod 108 and a third screw rod 109, one ends of the second screw rod 108 opposite to the second screw rod 109 are respectively connected with a first bevel gear 110 and a second bevel gear 111, a fourth driving motor 112 is arranged at the right side position in the second mounting groove 106, a driving shaft of the fourth driving motor 112 is connected with a driving bevel gear 113, the driving bevel gear 113 is meshed with the first bevel gear 110 and the second bevel gear 111, the second screw rod 108 and the third screw rod 109 are respectively sleeved with a second screw rod nut 135 and a third screw rod nut 136, the first rack 96 is in sliding connection with the second screw rod nut 135, and the second rack 102 is in sliding connection with the third screw rod nut 136.

When the pipe fitting is trial-manufactured, the material taking mechanism 22 is not needed, the material taking platform 89 is driven to rotate by the furling motor 138, the material taking platform 89 is enabled to rotate to be parallel to the rack 2, the occupied space of the material taking platform 89 is reduced, and a worker can obtain more operation space. In order to bring the material taking platform 89 as close as possible to the frame 2, the fixed claw arm 116 that exceeds the width of the material taking platform 89 needs to be rotated 90 degrees and then taken under the material taking platform 89. At this time, the third driving gear 93 is driven to rotate by the third driving motor 92, and the lifting platform 90 is driven to descend by the cooperation of the third driving gear 93 and the rack bar 94, so that the third driven gear 103 is positioned at the same height as the first rack 96 and the second rack 102. The fourth driving motor 112 drives the driving bevel gear 113 to rotate, drives the engaged first bevel gear 110 and second bevel gear 111 to rotate in opposite directions, and then drives the second lead screw 108 and the third lead screw 109 to rotate in opposite directions, so that the first rack 96 and the second rack 102 are in contact with the third driven gear 103 through the opposite movement of the second lead screw nut 135 and the third lead screw nut 136. The fifth cylinder 100 and the sixth cylinder 101 respectively drive the first rack 96 and the second rack 102 to move in opposite directions, so as to drive the third driven gear 103 to rotate, so that the rotating column 91 rotates to drive the fixed claw arm 116 to fold.

When the pipe fittings are manufactured in large quantities, the material taking platform 89 is vertical to the rack 2 and is driven by an external mechanism to slide the sliding block 37 to the upper part of the pipe fittings along the sliding rail 21. The third driving gear 93 is driven by the third driving motor 92 to rotate, and the lifting platform 90 is driven to descend through the cooperation of the third driving gear 93 and the rack bar 94, so that the pipe fitting is positioned between the two hinged fixed claw arms 116. Under the action of the clamping cylinder 118, the two fixed claw arms 116 rotate towards each other, thereby clamping the pipe. After the cutting mechanism 7 cuts the pipe, the lifting table 90 is controlled to ascend by the third driving motor 92, and the external mechanism drives the sliding block 37 to drive the material taking platform 89 to move above the material receiving frame 23. The pipe fittings are loosened by the fixed claw arms 116, and the pipe fittings can fall into the material receiving frame 23 for uniform collection.

Preferably, the top end of the toothed bar 94 is connected with a hanging plate 95, the upper part of the material taking platform 89 is provided with a supporting motor 104, a driving shaft of the supporting motor 104 is connected with a supporting bar 105, and the supporting bar 105 can be driven by the supporting motor 104 to rotate to the lower part of the hanging plate 95 or rotate out from the lower part of the hanging plate 95. When the material taking mechanism 22 is not used, the support bar 105 can support the hanging plate 95 to fix the lifting platform 90 instead of the cooperation of the third driving gear 93 and the toothed bar 94, so that the lifting platform 90 is prevented from falling after the third driving motor 92 is subjected to long-term load damage.

Preferably, a circle of groove 56 is formed in the lower portion of the gear ring 25, the upper portion of the support column 24 is connected with a positioning block 57 and a third supporting block 58, the positioning block 57 and the third supporting block 58 are located in the groove 56, first balls 59 are arranged on the top and the side of the third supporting block 58, a limiting piece 60 is mounted at the positions, located on the two sides of the positioning block 57, in the groove 56 through a fixing piece 62, and a plurality of second balls 61 are rotatably arranged on the inner side of the limiting piece 60. First balls 59 are disposed on the top and side of the third supporting block 58 to assist the gear ring 25 to rotate smoothly on the third supporting block 58, so as to reduce friction therebetween. Insert spacing piece 60 in recess 56 to set up second ball 61 in spacing piece 60, the diameter of second ball 61 is less than first ball 59, makes the error of installation clearance between ring gear 25 and the locating piece 57 diminish, and the mounted position of ring gear 25 is more accurate, thereby is more smooth and easy when rotating.

Preferably, the lifting mechanism 6 further includes a guide post 73 fixed on the base 1, the guide post 73 penetrates through the second lifting block 71, the top of the guide post 73 is connected with a second limit block 74, and the lower portion of the second limit block 74 is provided with a crash pad 75. The second stopper 74 serves to limit the rising height of the second elevating block 71 to prevent it from colliding with the ring gear 25. The setting of crashproof pad 75 can protect second stopper 74 and second lifter 71 both, plays the effect of shock attenuation anticollision.

Preferably, the plurality of adjusting blocks 28 are arranged in a staggered manner, notches 77 for the fixing bolts 76 to pass through are formed in the middle positions of the adjusting blocks 28, positioning columns 78 are arranged on one sides of the adjusting blocks 28, positioning holes 79 are formed in the other sides of the adjusting blocks 28, the positions of the positioning columns 78 and the positioning holes 79 are symmetrical relative to the notches 77, the notches 77 of the upper adjusting block 28 and the lower adjusting block 28 are arranged oppositely, the fixing bolts 76 are inserted into the notches, the positioning column 78 on the lower adjusting block 28 is inserted into the positioning hole 79 of the upper adjusting block 28, and the fixing bolts 76 can be used for fixing the plurality of adjusting blocks 28 more stably.

Preferably, the feeding mechanism 9 is disposed on the base 1 behind the shaft sleeve 10, the feeding mechanism 9 includes a feeding cylinder 124 fixed on the base 1, a slide rail 119 disposed on the base 1, and a slide plate 120 slidably disposed on the slide rail 119, a support wall 121 is vertically disposed on the slide plate 120, a fixed cylinder 122 is disposed on an upper portion of the support wall 121, a fixed claw 123 is disposed on a piston rod of the fixed cylinder 122, a connecting arm 125 is connected to a side surface of the slide plate 120, and a piston rod of the feeding cylinder 124 is connected to the connecting arm 125.

The fixed cylinder 122 drives the fixed claw 123 to clamp the pipe, and the feed cylinder 124 drives the sliding plate 120 to slide on the sliding rail 119, so as to push the pipe forward in the shaft sleeve 10.

Preferably, the pushing mechanism 30 is disposed at the rear side of the sliding plate 120, the pushing mechanism 30 includes a supporting arm 126 connected to the sliding plate 120, a rotating motor 127 is disposed on the supporting arm 126, a rotating arm 128 is connected to a driving shaft of the rotating motor 127, a threaded sleeve 129 is rotatably disposed at one end of the rotating arm 128 far from the rotating motor 127, a screw 130 is connected to the threaded sleeve 129 in a threaded manner, a stepping motor 131 is disposed at the middle position of the rotating arm 128, and a transmission belt is connected between the driving shaft of the stepping motor 131 and the threaded sleeve 129.

The pushing mechanism 30 rotates to one side in the feeding process, so that the feeding is prevented from being influenced. When the part of the pipe remained outside the shaft sleeve 10 is short and the fixing claw 123 cannot clamp, the rotating motor 127 drives the rotating arm 128 to rotate, so that the screw 130 and the pipe are in a straight line, the stepping motor 131 drives the threaded sleeve 129 to rotate, the screw 130 moves forwards, the pipe is pushed forwards, the length of the residual pipe is enough for processing, the processing is continued, and the blanking is directly pushed out if the length of the residual pipe is not enough for processing.

Preferably, two parallel conveyer belts 19 are arranged on the base 1 at the rear side of the frame 2, the conveyer belts 19 are provided with supporting claws 20, and the conveyer belts 19 are driven by an external mechanism; the position that lies in between feeding mechanism 9 and conveyer belt 19 on base 1 rotates and is provided with dwang 13, and dwang 13 one end is connected with first driven gear 14, installs rotor arm 15 on the dwang 13, and the one end that rotor arm 15 kept away from dwang 13 is equipped with horizontal pole 17, and pneumatic claw 18 is all installed to horizontal pole 17 front and back end, is equipped with on base 1 with first driven gear 14 matched with actuating mechanism 16.

The pipe fitting is placed on the supporting claw 20 and is driven by the conveyer belt 19 to move, and after the left end of the conveyer belt 19, the pipe fitting falls onto the pneumatic claw 18 below. After the pneumatic claw 18 clamps the pipe fitting, the driving mechanism 16 drives the rotating rod 13 to rotate through the first driven gear 14, and then drives the cross rod 17 to turn over through the rotating arm 15, so that the pipe fitting on the pneumatic claw 18 reaches between the two fixed claws 123, the two fixed claws 123 clamp the pipe fitting, and the pneumatic claw 18 is loosened, thereby completing the loading operation of the pipe fitting.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. A workbench for a numerically controlled machine tool, characterized in that it comprises a base (1), a frame (2) is provided at an upper middle position of the base (1), and the frame (2) is arranged along the base The seat (1) is arranged in the length direction, the frame (2) is rotatably provided with a shaft sleeve (10), the front end of the shaft sleeve (10) is connected with a chuck (36), and the rear of the shaft sleeve (10) The end is arranged through the frame (2), the upper part of the frame (2) is provided with a rotating motor (8), and the drive shaft and the shaft sleeve (10) of the rotating motor (8) pass out of the frame (2). Partly connected by a transmission belt, a clamping cylinder (11) is respectively provided on the rear side of the frame (2) on both sides of the shaft sleeve (10), and the front end of the piston rod of the clamping cylinder (11) is connected with clamping cylinders (11). block(12);

A plurality of support columns (24) are arranged on the upper part of the base (1) at the front side of the frame (2), and a ring gear (25) is rotatably arranged on the support column (24). ) is fixed with a tool exchange ring (3), a plurality of tool mechanisms (4) are arranged on the tool exchange ring (3), a first drive motor (26) is arranged on the base (1), and the first drive motor (26) is arranged on the base (1). A drive motor (26) is drivingly connected with a first drive gear (5), the first drive gear (5) meshes with the ring gear (25), and the upper part of the base (1) is located on the tool exchange ring (3) The outer position is provided with several pushing mechanisms, and the upper part of the base (1) is provided with several lifting mechanisms (6) and positioning mechanisms at the position inside the tool exchange ring (3), the lifting mechanism (6), the pushing mechanism, The corresponding settings of the positioning mechanism;

The positioning mechanism comprises a first support seat (27) arranged on the mechanism (1), a bearing block (46) is arranged on the upper part of the first support seat (27), and a first bearing block (46) is arranged on the upper part of the bearing block (46). A limit block (29), a limit column (47) is arranged on the inner side of the first limit block (29), and a plurality of adjustment blocks ( 28), the bearing block (46) and the adjusting block (28) are fixed on the first support seat (27) by the fixing bolts (76);

The pushing mechanism comprises a second support seat (31) arranged on the base (1), a first air cylinder (32) is provided on the side of the second support seat (31), and the first air cylinder (32) is provided with a first cylinder (32). A first lifting block (33) is connected to the top of the piston rod, a first supporting block (34) is installed on the first lifting block (33) through a first fixing block (39), and the first supporting block (34) The upper part is provided with a second cylinder (43), the front end of the piston rod of the second cylinder (43) is connected with a traverse block (44), and a side of the traverse block (44) close to the second cylinder (43) is provided. There is a third air cylinder (45), the piston rod of the third air cylinder (45) penetrates the traverse block (44) and the front end is connected with a fixing column (132), the upper part of the fixing column (132) is provided with a first fixing hole (133);

The base (1) is provided with an installation groove (63), the lifting mechanism (6) is partially located in the installation groove (63), and the lifting mechanism (6) includes a rotating seat located in the installation groove (63) (64) and a second drive motor (68), a rotating shaft (65) is rotatably provided on the upper part of the rotating seat (64), and a second driven gear (66) is connected to the upper part of the rotating shaft (65), and the first A first lead screw (67) is connected to the upper part of the two driven gears (66), and a first lead screw nut (70) is sleeved on the first lead screw (67). A second lifting block (71) is fixed, the upper part of the second lifting block (71) is provided with a lifting rod (72), and the second driving motor (68) is drivingly connected with a second driving gear (69). The second drive gear (69) meshes with the second driven gear (66);

The cutter mechanism (4) includes a second support block (35) mounted on the cutter exchange ring (3), and a cutter mounting block ( 40), the upper end of the tool mounting block (40) located inside the tool exchange ring (3) is provided with a tool seat (41), a tool (42) is mounted on the tool seat (41), and the tool mounting block (40) One end of the tool holder (41) is provided with a limit hole (81) matched with the limit column (47), and the lower part of the tool mounting block (40) is provided with a position corresponding to the position of the lift rod (72). The lifting hole (80) of the cutter mounting block (40) is provided with a limiting hole (81) and a second fixing hole (82) on the side of the cutter mounting block (40) close to the pushing mechanism, and the limiting hole (81) is located in the cutter mounting block ( 40) Close to and communicate with the lifting hole (80) on one side of the pushing mechanism, the upper part of the limiting hole (81) is communicated with the second fixing hole (82), and the limiting hole (81) is connected to the lifting hole (81). 80) are perpendicular to each other, a fixing sleeve (84) is fixedly installed inside the limiting hole (81), a linkage rod (85) is penetrated in the fixing sleeve (84), and one end of the linkage rod (85) extends into A trigger plate (83) is connected in the lower lifting hole (80), the other end is bent and located above the second fixing hole (82), and a fixing pin (87) is connected at the lower part. A fixing hole (133) is matched, and a spring (86) is sleeved on the linkage rod (85) between the fixing sleeve (84) and the trigger plate (83);

The upper part of the base (1) is provided with a cutting mechanism (7) at a position corresponding to the front side of the chuck (36), and the cutting mechanism (7) comprises a third support seat (48) fixed on the upper part of the base (1). ), the upper part of the third support seat (48) is connected with a guide block (50), the guide block (50) is slidably provided with a cutting knife support (51), and the side of the third support seat (48) is provided with There is a fourth air cylinder (49), the top end of the piston rod of the fourth air cylinder (49) is connected with the cutting knife support (51), and the upper part of the cutting knife support (51) is provided with a cutting knife support (52), A cutting knife rotating shaft (54) is rotatably arranged on the cutting knife support (52), a cutting knife (53) is fixed on the cutting knife rotating shaft (54), and a cutting motor is arranged in the cutting knife support (51). (55), the output shaft of the cutting motor (55) and the rotating shaft (54) of the cutting knife are connected by a transmission belt.

2. A workbench for a CNC machine tool according to claim 1, wherein the upper part of the base (1) is provided with a receiving rack (23) at the position on the right side in front of the frame (2). The frame (2) is provided with a reclaiming mechanism (22) for moving the processed pipe to the receiving frame (23).

3. The workbench for a numerically controlled machine tool according to claim 2, wherein the frame (2) is provided with a slideway (21), and a slideway (21) is slidably arranged in the slideway (21). A sliding block (37), the driving mechanism (22) includes a reclaiming platform (89), a retracting motor (138) is provided on the sliding block (37), and one end of the reclaiming platform (89) extends into the sliding block (89). In the block (37), the drive shaft of the retracting motor (138) extends vertically into the sliding block (37) and is connected with the reclaiming platform (89), which is provided with a lifting platform in the middle of the reclaiming platform (89). (90), the upper part of the lifting platform (90) is connected with a gear rod (94), the upper part of the reclaiming platform (89) is connected with a motor frame (137), and the motor frame (137) is provided with a third drive A motor (92), the drive shaft of the third drive motor (92) is connected with a third drive gear (93), the third drive gear (93) is matched with the gear rod (94), and the lift table ( 90) A rotating column (91) is arranged on the upper part of the rotating column (91), the upper part of the rotating column (91) is connected with a third driven gear (103), and the lower part of the rotating column (91) is hinged with two fixed claw arms (116) arranged oppositely. ), a connecting plate (114) is connected to the side of the rotating column (91), and a clamping cylinder (118) is hinged on the connecting plate (114), and the front end of the piston rod of the clamping cylinder (118) is connected to the fixing claw. The side of the arm (116) is hinged, and the left and right sides of the upper part of the reclaiming platform (89) are respectively provided with a first installation groove (97) and a second installation groove (106). The front and rear parts are provided with sliding rod seats (98), a sliding rod (99) is connected between the two front and rear opposite sliding rod seats (98), and a mounting plate (134) is slidably arranged on the sliding rod (99). ), the mounting plates (134) on the front side and the rear side are respectively provided with a fifth cylinder (100) and a sixth cylinder (101), the pistons of the fifth cylinder (100) and the sixth cylinder (101) The rods are respectively connected with a first rack (96) and a second rack (102), and the front and rear sides of the inner side of the second installation groove (106) are provided with rotating shaft seats (107). A second screw rod (108) and a third screw rod (109) are respectively provided on the rotating shaft seat (107), and the opposite ends of the second screw rod (108) and the second screw rod (109) are respectively connected with the first screw rod (108) and the second screw rod (109). A bevel gear (110) and a second bevel gear (111), a fourth drive motor (112) is provided at the inner right position of the second installation groove (106), and the drive shaft of the fourth drive motor (112) is connected There is a driving bevel gear (113), the driving bevel gear (113) meshes with the first bevel gear (110) and the second bevel gear (111), the second screw (108) and the third screw (109) ) are respectively sleeved with a second screw nut (135) and a third screw nut (136), the first rack (96) is slidingly connected with the second screw nut (135), the second screw nut (135) The rack (102) is slidably connected with the third screw nut (136).

4. A workbench for a numerically controlled machine tool according to claim 3, wherein the top end of the gear rod (94) is connected with a hanging plate (95), and the upper part of the reclaiming platform (89) is provided with a hanging plate (95). A support motor (104) is supported, and a drive shaft of the support motor (104) is connected with a support bar (105).

5. A workbench for a numerically controlled machine tool according to claim 1, characterized in that: a ring of grooves (56) is provided in the lower part of the ring gear (25), and the upper part of the support column (24) is connected with a groove (56). The positioning block (57) and the third support block (58), the positioning block (57) and the third support block (58) are located in the groove (56), the top and the left and right sides of the third support block (58) A first ball (59) is arranged on both sides to rotate, and the position on both sides of the positioning block (57) in the groove (56) is installed with a limit piece (60) through a fixed piece (62), and the limit piece ( 60) A plurality of second balls (61) are arranged on the inner side to rotate.

6. A workbench for CNC machine tools according to claim 1, wherein the lifting mechanism (6) further comprises a guide column (73) fixed on the base (1), the guide The column (73) is arranged through the second lifting block (71), the top of the guide column (73) is connected with a second limit block (74), and the lower part of the second limit block (74) is provided with a crash pad ( 75).

7. A workbench for a numerically controlled machine tool according to claim 1, wherein a plurality of the adjusting blocks (28) are arranged in a staggered manner, and a middle position of the adjusting blocks (28) is provided with fixing bolts (76). ) through the gap (77), the adjustment block (28) is provided with a positioning column (78) on one side and a positioning hole (79) on the other side, the positioning column (78), the positioning hole (79) is located symmetrically with respect to the notch (77).

8. A workbench for a CNC machine tool according to claim 1, wherein the base (1) is provided with a feeding mechanism (9) at a position behind the shaft sleeve (10), and the The feeding mechanism (9) comprises a feeding cylinder (124) fixed on the base (1), a sliding rail (119) arranged on the base (1), and a sliding plate (120) slidably arranged on the sliding rail (119). ), a support wall (121) is vertically arranged on the sliding plate (120), a fixed cylinder (122) is arranged on the upper part of the support wall (121), and a fixed claw is arranged on the piston rod of the fixed cylinder (122). (123), a connecting arm (125) is connected to the side of the sliding plate (120), and the piston rod of the feeding cylinder (124) is connected to the connecting arm (125).

9 . The workbench for a numerically controlled machine tool according to claim 8 , wherein: a pushing mechanism ( 30 ) is provided on the rear side of the sliding plate ( 120 ), and the pushing mechanism ( 30 ) comprises: 10 . a support arm (126) connected to the sliding plate (120), a rotary motor (127) is provided on the support arm (126), and a rotary arm (128) is connected to the drive shaft of the rotary motor (127), One end of the rotating arm (128) away from the rotating motor (127) is rotatably provided with a threaded sleeve (129), the threaded sleeve (129) is internally threaded with a screw (130), and the middle of the rotating arm (128) A stepper motor (131) is provided at the position, and a transmission belt is connected between the drive shaft of the stepper motor (131) and the threaded sleeve (129).