CN210878491U - Automatic switch criticizes first device - Google Patents

Abstract

The utility model discloses an automatic batch head switching device, which relates to the field of nonstandard automation equipment, and adopts the technical scheme that the automatic batch head switching device comprises an electric batch head tool for driving a batch head to rotate and a batch head tool library with a plurality of batch heads for replacing the electric batch head tool; have the chuck on the first instrument of electronic batch, batch the head and inlay and establish in the chuck, batch head in the chuck utilizes stop gear locking or release, and the in-process of first instrument of electronic batch and the butt joint of batch first instrument storehouse utilizes butt joint mechanism and stop gear's mutual cooperation, will batch the head and accomplish locking or release state, and batch head on the electronic first instrument of batch can be placed a plurality ofly, carries out automatic change according to the screw kind on the product, need not manual adjustment, automatic switch-over, and the efficiency of arranging and changing batch head is higher.

Description

Automatic switch criticizes first device

Technical Field

The utility model relates to a nonstandard automation equipment field, in particular to automatic switch-over batch head device.

Background

At present, automation is greatly promoted in a plurality of factories, and in the production process of electronic products, a screw is the most common station, the screw is locked manually, the working strength is high, the efficiency is low, and the quality cannot be controlled.

Most products need to be screwed up in advance to the screw on the product, then need the screw machine with the screw on the product according to the design requirement, reach the design standard numerical value with the moment of torsion value of screw to reach the standard of product fastening. Ensuring that the quality of the output of each product is uniform.

At present, the screw type of the existing automatic screw locking machine is various, the replacement frequency is very high, the automatic screw locking machine on the market at present is difficult to realize the action of automatically replacing the screwdriver head, and the efficiency and the quality of manual adjustment cannot be controlled.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an automatic switch-over batch head device, it has the switching efficiency height, changes effectual advantage.

The above technical purpose of the present invention can be achieved by the following technical solutions:

an automatic batch head switching device comprises an electric batch head tool for driving a batch head to rotate and a batch head tool library provided with a plurality of batch heads for replacing the electric batch head tool;

the electric bit tool comprises a mounting plate, a supporting frame arranged on the mounting plate and a power device arranged on the supporting frame, wherein the supporting frame is rotationally connected with a sleeve and is linked with the sleeve to rotate; a chuck linked with the rotation of the batch head and a first elastic piece acting on the chuck are inserted in the sleeve, the head of the chuck is provided with an inner hexagonal hole inserted with the batch head, and a limiting mechanism for locking or releasing the position of the batch head is arranged;

the batch head tool library comprises a base and a supporting plate arranged on the base, and a butt joint mechanism for butting and taking the batch head is arranged on the supporting plate; docking mechanism is sliding crimping sleeve and butt sleeve inside trading the first sleeve of criticizing including trading first sleeve, restricted axial, is equipped with the third elastic component between crimping sleeve and the butt sleeve, connects sleeve and butt sleeve axle center hole to be in and supplies the criticizing head to wear to establish on the same axis.

Through adopting above-mentioned technical scheme, have the chuck on the electronic first instrument of wholesale, the wholesale head inlays and establishes in the chuck, wholesale head in the chuck utilizes stop gear locking or release, the in-process of electronic first instrument of wholesale and the butt joint of wholesale head instrument storehouse, utilize butt joint mechanism and stop gear's mutual cooperation, will criticize the head and accomplish locking or release state, wholesale head on the electronic first instrument of wholesale can be placed a plurality ofly, carry out automatic change according to the screw kind on the product, need not manual adjustment, automatic switch, and the efficiency of arranging and changing wholesale head is higher.

Further setting: the sleeve is including being located the position towards the connector of power device one side, being located the axle sleeve at middle part and being located the shaft shoulder of another tip, and the inside hole that slides that is equipped with in axle center of axle sleeve, the opening direction in hole that slides dorsad power device one side, and the inside hole that cup joints that has in axle center of shaft shoulder, and the aperture in the hole that cup joints is greater than the aperture in hole that slides, and telescopic sliding hole is located to first elastic component.

By adopting the technical scheme, the sleeve is designed in a segmented manner, and is matched with the installation of the butt joint mechanism and the action required to be realized.

Further setting: the chuck body is provided with a pin shaft, and a slideway which axially extends and is used for the sliding connection of the pin shaft is arranged at the position of a shaft shoulder.

Through adopting above-mentioned technical scheme, round pin axle and slide make chuck body and sleeve rotatory linkage in the lump, and leave axial displacement's space, ensure the axial activity volume of chuck.

Further setting: the limiting mechanism comprises a channel radially arranged on the outer ring of the chuck, a rolling piece arranged in the channel and a pushing piece driving the rolling piece to reciprocate in the channel in the radial direction, the pushing piece is annularly sleeved on the outer side of the chuck and comprises a bulge towards one side of the axial inner center and an annular groove connected with the bulge, the arrangement position of the annular groove is positioned in the middle section of the pushing piece, and the two shaft ends are limited by the bulge in the stroke; when the screwdriver head is embedded or the dragging piece exerts power by external force, the screwdriver head and the dragging piece are axially staggered, and in the axial staggered process, the rolling piece radially reciprocates and is limited in the annular groove of the screwdriver head or is separated from the annular groove to relieve the limitation of the screwdriver head.

By adopting the technical scheme, the limiting mechanism drives the rolling piece to be radially embedded into the annular groove of the batch head by utilizing the pushing piece, and limits the batch head to be separated in the axial direction to complete the locking of the position; otherwise, unlocking is completed.

Further setting: and a second elastic piece is arranged in the sleeve joint hole of the sleeve and acts on the shaft end face of the pushing piece.

By adopting the technical scheme, the pushing piece is stressed on the end part of the sleeve in the process of butting the pushing piece with the butting mechanism, and the second elastic piece plays a role in buffering the force of the part.

Further setting: the below of backup pad still is equipped with the elasticity fixture of radial effect in batch head outer lane, and elasticity fixture includes the centre gripping sleeve that butts to butt sleeve below, and the centre gripping sleeve meets with the butt sleeve, is equipped with the breach in centre gripping telescopic below, and the breach makes telescopic arc body that only has half. The elastic clamping mechanism further comprises a pressing block and a fourth elastic piece for pushing the pressing block to reciprocate in the radial direction towards one side of the notch.

Through adopting above-mentioned technical scheme, elasticity fixture has a confining force to criticizing the head, reduces the influence of first elasticity and third elastic component to criticizing the head for the control of criticizing the lift action of head is more steady.

Further setting: the surface of briquetting is equipped with the arc recess, and the arc recess forms the centre gripping space with the arc body, and the elasticity of fourth elastic component makes the briquetting press towards arc body one side all the time and holds.

Through adopting above-mentioned technical scheme, better and the batch head formation face contact of cooperation of arc recess and arc body increases certain friction, forms temporary centre gripping effect.

Further setting: an elastic buffer device is arranged below the base corresponding to the axis of the screwdriver head sleeve and comprises a sliding sleeve, an ejector rod arranged in the sliding sleeve and a fifth elastic piece which is arranged in the sliding sleeve and acts on the ejector rod; the sliding sleeve is installed on the base, and the ejector pin is located the center of sliding sleeve, and the ejector pin is coaxial with trade the telescopic axis of batch head.

Through adopting above-mentioned technical scheme, when criticizing the head and descend to the bottom completely, have elastic buffer on the base and cushion, avoid criticizing the pointed portion of head and be worn and torn.

Further setting: the supporting plate is provided with a guide pillar below, the base is provided with a guide sleeve, the guide pillar in the supporting plate is connected to the guide sleeve of the base in a sliding mode, and the base is provided with a first jacking device for driving the supporting plate to lift.

By adopting the technical scheme, the height between the supporting plate and the base can be adjusted, and the screwdriver head with various lengths can be adapted.

Further setting: the power device is preferably a torque motor, and an output shaft of the torque motor is connected with the sleeve by utilizing a linkage shaft.

By adopting the technical scheme, the torque motor stops the rotation of the screw after detecting that the torque of the screwdriver bit reaches the standard value.

To sum up, the utility model discloses following beneficial effect has: 1. the torque value of the screw can reach the design standard value, so that the fastening standard of products is reached, and the quality of each product is ensured to be uniform.

2. The screwdriver head is automatically replaced, and screws of different types on the product are pre-screwed.

Drawings

FIG. 1 is a schematic structural diagram of an automatic batch head switching device;

FIG. 2 is a schematic perspective view of a power bit tool;

FIG. 3 is a schematic cross-sectional view of a power bit tool;

FIG. 4 is a schematic perspective view of a lot header tool library;

FIG. 5 is a schematic cross-sectional view of a lot head tool library;

FIG. 6 is a schematic structural view of the elastic clamping mechanism;

fig. 7 is a schematic view of the lower structure of the adsorption plate.

In the figure, 100, an electric bit tool; 101. a sleeve; 102. a bearing; 103. a power plant; 104. a connector; 105. a shaft sleeve; 106. a shaft shoulder; 107. a sliding hole; 108. an inner hexagonal hole; 109. sleeving a hole; 110. a channel; 111. a pusher member; 112. a rolling member; 113. an annular groove; 114. a protrusion; 115. a first elastic member; 116. a second elastic member; 117. a chuck; 118. a pin shaft; 119. a limiting mechanism; 120. Mounting a plate; 121. a support frame;

200. a batch head tool library; 201. a base; 202. a support plate; 203. a guide post; 204. a guide sleeve; 205. a docking mechanism; 206. a first jacking device; 207. changing a sleeve of the screwdriver head; 208. crimping the sleeve; 209. abutting the sleeve; 210. a boss; 211. a third elastic member; 212. an elastic clamping mechanism; 213. a clamping sleeve; 214. a notch; 215. briquetting; 216. a fourth elastic member; 217. an arc-shaped groove; 218. an arc-shaped body; 219. a sliding sleeve; 220. a fifth elastic member; 221. a top rod; 222. an elastic buffer device;

300. a batch head; 301. an annular groove;

400. a material rack; 401. a carriage; 402. an adsorption plate; 403. a second jacking device; 404. positioning pins; 405. an adsorption hole; 406. a U-shaped guide block; 407. a U-shaped slider; 408. a U-shaped chute; 409. a butt joint hole; 410. a hollow-out section; 411. a sensor;

500. a frame;

600. a work table;

700. a three-axis manipulator; 701. an X-axis mechanism; 702. a Y-axis mechanism; 703. a Z-axis mechanism; 704. a CCD camera.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

First preferred embodiment:

an automatic batch head switching device, as shown in fig. 1, includes an electric batch head 300 tool 100 for driving a batch head 300 to rotate and a batch head tool library 200 having a plurality of batch heads 300 for replacing the electric batch head 300 tool 100.

As shown in fig. 2 to 3, the electric batch head 300 tool 100 includes a mounting plate 120 and a supporting frame 121 disposed on the mounting plate 120, a sleeve 101 is disposed on the supporting frame 121, the sleeve 101 is rotatably connected to the supporting frame 121 through a bearing 102 seat and a bearing 102, a power device 103 for linking the sleeve 101 to rotate is disposed on the supporting frame 121, the power device 103 is preferably a torque motor, and an output shaft of the torque motor is connected to the sleeve 101 by a linkage shaft.

The sleeve 101 comprises a connecting head 104 located on one side facing the power device 103, a shaft sleeve 105 located on the middle portion, and a shaft shoulder 106 located on the other end portion, a sliding hole 107 is arranged inside the shaft center of the shaft sleeve 105, the opening direction of the sliding hole 107 faces away from one side of the power device 103, a sleeve hole 109 is arranged inside the shaft center of the shaft shoulder 106, and the diameter of the sleeve hole 109 is larger than that of the sliding hole 107.

The inside of the sleeve 101 is inserted with a chuck 117 which is linked with the batch head 300 to rotate, the chuck 117 is arranged in a column shape, the head of the chuck 117 is provided with an inner hexagonal hole 108 which is inserted with the batch head 300, the tail of the batch head 300 is embedded in the inner hexagonal hole 108, and the chuck 117 is provided with a limiting mechanism 119 which locks or releases the position of the batch head 300.

The limiting mechanism 119 comprises a channel 110 radially arranged on the outer ring of the chuck 117, a rolling element 112 arranged in the channel 110, and a pushing element 111 driving the rolling element 112 to reciprocate radially in the channel 110. The pushing piece 111 is annularly sleeved on the outer side of the chuck 117, the pushing piece 111 comprises a protrusion 114 towards the axial inner side and an annular groove 113 connected with the protrusion 114, the annular groove 113 is arranged at the middle section of the pushing piece 111, and the two shaft ends are limited by the protrusion 114 in stroke. The conventional headpiece 300 is generally hexagonal in shape with an annular groove 301 in the tail section. When the batch head 300 is embedded or the dragging piece exerts power by external force, the batch head and the dragging piece are axially dislocated, and in the axial dislocating process, the rolling piece 112 radially reciprocates and is limited in the annular groove 301 of the batch head 300 or is separated from the annular groove 301 to relieve the limit of the batch head 300. After the limiting, the collet 117 links the bit 300 to rotate due to the hexagonal fitting relationship between the bit 300 and the collet 117.

A first elastic member 115 acting on the collet 117 is provided in the slide hole 107 of the sleeve 101, and a second elastic member 116 is provided in the socket hole 109 of the sleeve 101. The sliding hole 107 and the sleeving hole 109 of the chuck 117 are inserted into each other, a pin 118 is disposed on the body of the chuck 117, a slide way (not shown) extending axially for slidably connecting the pin 118 is disposed at the shoulder 106, and the axial movement amount of the chuck 117 is determined by the length of the slide way. The second elastic member 116 acts on the shaft end surface of the urging member 111.

As shown in fig. 4 to 5, the batch head tool magazine 200 includes a base 201 and a supporting plate 202 disposed on the base 201, wherein a guide post 203 is disposed below the supporting plate 202, a guide sleeve 204 is disposed on the base 201, and the guide post 203 on the supporting plate 202 is slidably connected to the guide sleeve 204 of the base 201. The supporting plate 202 is provided with a docking mechanism 205 for docking with the batch head 300 for placing and taking, and the base 201 is provided with a first jacking device 206 for driving the supporting plate 202 to lift.

The docking mechanism 205 comprises a screwdriver head sleeve 207, a crimping sleeve 208 and an abutting sleeve 209, wherein the crimping sleeve 208 and the abutting sleeve 209 are limited to axially slide in the screwdriver head sleeve 207, and axial holes of the crimping sleeve 208 and the abutting sleeve 209 are located on the same axis for the screwdriver head 300 to penetrate through. The inner side surfaces of the pressure welding sleeve 208 and the abutting sleeve 209 opposite to each other are provided with bosses 210, a third elastic member 211 is arranged between the two bosses 210 of the pressure welding sleeve 208 and the abutting sleeve 209, and the elastic force of the third elastic member 211 is larger than that of the first elastic member 115.

An elastic clamping mechanism 212 which radially acts on the outer ring of the batch head 300 is further arranged below the supporting plate 202, the elastic clamping mechanism 212 comprises a clamping sleeve 213 abutted to the lower portion of the abutting sleeve 209, the clamping sleeve 213 is connected with the abutting sleeve 209, a notch 214 is arranged below the clamping sleeve 213, and the notch 214 enables only one half of the arc-shaped body 218 of the sleeve 101 to be formed. The elastic clamping mechanism 212 further includes a pressing piece 215 and a fourth elastic member 216 for pushing the pressing piece 215 to reciprocate radially toward the notch 214 side. The surface of the pressing block 215 is provided with an arc-shaped groove 217, the arc-shaped groove 217 and the arc-shaped body 218 form a clamping space, and the pressing block 215 is pressed towards one side of the arc-shaped body 218 all the time by the elasticity of the fourth elastic member 216.

An elastic buffer device 222 is arranged on the base 201 below the axis of the bit changing sleeve 207, and the elastic buffer device 222 includes a sliding sleeve 219, a top rod 221 arranged in the sliding sleeve 219, and a fifth elastic member 220 arranged in the sliding sleeve 219 and acting on the top rod 221. The sliding sleeve 219 is installed on the base 201, the top rod 221 is disposed at the center of the sliding sleeve 219, and the top rod 221 is coaxial with the axis of the bit exchanging sleeve 207.

When the tool 100 of the electric batch head 300 needs to mount the batch head 300, the tool 100 of the electric batch head 300 is moved by external power, the chuck 117 of the tool 100 of the electric batch head 300 is pressed and sleeved in the sleeve hole 109 of the chuck 117, the chuck 117 partially extends into the crimping sleeve 208 along with the continuous descending of the tool 100 of the electric batch head 300, the shaft end of the pushing piece 111 is abutted against the shaft end of the crimping sleeve 208, the process enables the annular groove 113 of the pushing piece 111 to axially move to the position of the rolling piece 112, the rolling piece 112 can radially move to the position of the annular groove 113 according to the channel 110, and the limiting mechanism 119 is in a state of releasing the batch head 300.

As shown in fig. 5 and 6, the pressing sleeve 208 is lowered properly according to the remaining elastic variable of the lower third elastic member 211, and the elastic force of the third elastic member 211 below the pressing sleeve 208 is larger than that of the first elastic member 115, so as to have proper restoring force to the pushing member 111 and the chuck 117, thereby ensuring that the converting process is lowered slowly. During the lowering of the batch head 300, the elastic clamping mechanism 212 below the supporting plate 202 radially acts on the outer ring of the batch head 300,

the batch head 300 is embedded in a clamping space formed by the arc-shaped groove 217 and the arc-shaped body 218, the arc-shaped body 218 is pressed and held by the fourth elastic piece 216 towards one side of the arc-shaped groove 217, the elastic force of the fourth elastic piece 216 is overcome by the descending power of the batch head 300, the elastic clamping mechanism 212 has a restraining force on the batch head 300, the influence of the first elastic piece and the third elastic piece 211 on the batch head 300 is reduced, and the control of the lifting action of the batch head 300 is more stable.

When the batch head 300 is completely lowered to the bottom, the base 201 is provided with an elastic buffer device 222 for buffering, so as to prevent the tip of the batch head 300 from being worn.

The first jacking device 206, the first jacking device 206 is linked with the supporting plate 202 to ascend and descend, and the height between the supporting plate 202 and the base 201 is adjustable and is adapted to batch heads 300 with various lengths.

A batch head device comprises a frame 500 and a workbench 600, wherein a material rack 400 for placing products is arranged on the workbench 600. The material rack 400 comprises a carriage 401 arranged on the rack 500, an adsorption plate 402 arranged on the carriage 401, and a second jacking device 403 arranged on the carriage 401 and used for driving the adsorption plate 402 to lift, wherein the structure of the second jacking device 403 is the same as that of the first jacking device 206, and the adsorption plate 402 is driven to lift.

As shown in fig. 1 and 7, the edge of the suction plate 402 is provided with a positioning pin 404 for positioning the product. The middle part of adsorption plate 402 is equipped with adsorption hole 405, and adsorption hole 405 external vacuum station or other vacuum generating device adsorb fixedly to the product on the planking 401.

The bottom of adsorption plate 402 is equipped with U type guide block 406, and U type guide block 406 inlays to establish to adsorption plate 402 on, is equipped with U type spout 408 on the U type guide block 406, and U type spout 408 interior sliding connection has U type slider 407, has the butt joint hole 409 with the output shaft linkage of second jacking device 403 on the U type slider 407, and the jacking action is more steady, ensures better levelness, controls the course of working's of product error. The edge on the bottom plate is provided with a hollow part 410 which is sunken towards the middle part, so that an external mechanical arm or a hand of a human body can take products conveniently.

The rack 500 is further provided with a three-axis manipulator 700, and the three-axis manipulator 700 comprises an X-axis mechanism 701 arranged on the rack 500, a Y-axis mechanism 702 arranged on the X-axis mechanism 701, and a Z-axis mechanism 703 arranged on the Y-axis mechanism 702.

The rack 500 is further provided with the automatic batch head switching device in the first embodiment, the mounting plate 120 of the electric batch head 300 tool 100 of the automatic batch head switching device is mounted on the Z-axis mechanism 703, and the base 201 of the batch head tool magazine 200 is mounted on the rack 500.

The mounting plate 120 is further provided with a CCD camera 704 for assisting in determining the position of the screws on the product, specifically, the product is provided with a plurality of screws to be tightened, and the pre-tightening state of the screws on the product is rotated again, so that the torque value reaches a certain value, and the standard of product fastening is reached after the force correction. The CCD camera 704 captures the initial point of the screw, and determines the initial point and other screws from the initial point position using the product of the first calibration as a reference, forming photographing coordinates. The screw pitch of the screws on each product may have poor consistency due to assembly requirements. The position of the screw needs to be calibrated after the offset, the position of the screw may change during the processing of the second product, the CCD camera 704 is located at the initial position to photograph and determine the position form of the screw of the product, and when the screw is not located at the original position, the three-axis manipulator 700 is used for position compensation.

The sensor 411 is arranged on the adsorption plate 402 of the rack 400, and the sensor 411 feeds back a signal whether a product exists on the adsorption plate 402, so that the controller makes a corresponding opening and closing command for the three-axis manipulator 700.

The above-mentioned embodiments are merely illustrative of the present invention, and are not intended to limit the present invention, and those skilled in the art can make modifications of the present embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent law within the scope of the present invention.

Claims (10)

1. The utility model provides an automatic switch batch head device which characterized in that: comprises an electric batch head (300) tool (100) driving the batch head (300) to rotate and a batch head (300) tool library (200) provided with a plurality of batch heads (300) for replacing the electric batch head (300) tool (100);

the tool (100) of the electric batch head (300) comprises a mounting plate (120), a supporting frame (121) arranged on the mounting plate (120) and a power device (103) arranged on the supporting frame (121), wherein the supporting frame (121) is rotationally connected with a sleeve (101) and linked with the sleeve (101) to rotate; a chuck (117) which is linked with the rotation of the batch head (300) and a first elastic piece (115) acting on the chuck (117) are inserted into the sleeve (101), the head of the chuck (117) is provided with a hexagon socket (108) inserted with the batch head (300), and a limiting mechanism (119) for locking or releasing the position of the batch head (300) is arranged;

the batch head (300) tool library (200) comprises a base (201) and a supporting plate (202) arranged on the base (201), wherein a butt joint mechanism (205) which is butted with the batch head (300) for placing and taking is arranged on the supporting plate (202); docking mechanism (205) are including trading first sleeve (207), confined axial slip at trading crimping sleeve (208) and butt sleeve (209) of first sleeve (207) inside, are equipped with third elastic component (211) between crimping sleeve (208) and butt sleeve (209), and adapter sleeve (101) and butt sleeve (209) axle center hole are in and supply to criticize first (300) to wear to establish on the same axis.

2. The automatic batch head switching device according to claim 1, wherein: sleeve (101) including being located the position towards connector (104) of power device (103) one side, be located axle sleeve (105) at middle part and be located axle shoulder (106) of another tip, the axle center inside of axle sleeve (105) is equipped with slide opening (107), the opening direction of slide opening (107) is dorsad power device (103) one side, the axle center inside of axle shoulder (106) has cup joint hole (109), the aperture of cup joint hole (109) is greater than the aperture of slide opening (107), first elastic component (115) are located in slide opening (107) of sleeve (101).

3. The automatic batch head switching device according to claim 2, wherein: the chuck (117) body is provided with a pin shaft (118), and a slideway which axially extends and is used for the sliding connection of the pin shaft (118) is arranged at the position of the shaft shoulder (106).

4. The automatic batch head switching device according to claim 3, wherein: the limiting mechanism (119) comprises a channel (110) radially arranged on the outer ring of the chuck (117), a rolling piece (112) arranged in the channel (110) and a pushing piece (111) driving the rolling piece (112) to reciprocate in the channel (110) in the radial direction, the pushing piece (111) is annularly sleeved on the outer side of the chuck (117), the pushing piece (111) comprises a protrusion (114) towards one side of an axial inner center and an annular groove (113) connected with the protrusion (114), the annular groove (113) is arranged at the middle section of the pushing piece (111), and the travel of two shaft ends is limited by the protrusion (114); when the batch head (300) is embedded or the dragging piece exerts power by external force, the batch head and the dragging piece are axially dislocated, and in the axial dislocation process, the rolling piece (112) radially reciprocates and is limited in the annular groove (113) of the batch head (300) or is separated from the annular groove (113) to relieve the limit of the batch head (300).

5. The automatic batch head switching device according to claim 4, wherein: and a second elastic piece (116) is arranged in the sleeving hole (109) of the sleeve (101), and the second elastic piece (116) acts on the shaft end face of the pushing piece (111).

6. The automatic batch head switching device according to claim 1, wherein: the utility model discloses a well drilling tool, including support plate (202), the below of backup pad (202) still is equipped with the radial elasticity fixture (212) that is used in batch head (300) outer lane, elasticity fixture (212) are including butt joint to centre gripping sleeve (213) of butt sleeve (209) below, centre gripping sleeve (213) meet with butt sleeve (209), be equipped with breach (214) in centre gripping sleeve (213) below, breach (214) make only half arc body (218) of sleeve (101), elasticity fixture (212) still include briquetting (215) and promote briquetting (215) towards fourth elastic component (216) that breach (214) one side radially reciprocated.

7. The automatic batch head switching device according to claim 6, wherein: the surface of the pressing block (215) is provided with an arc-shaped groove (217), the arc-shaped groove (217) and the arc-shaped body (218) form a clamping space, and the pressing block (215) is pressed towards one side of the arc-shaped body (218) all the time by the elasticity of the fourth elastic piece (216).

8. The automatic batch head switching device according to claim 7, wherein: an elastic buffer device (222) is arranged below the base (201) corresponding to the axis of the screwdriver head replacing sleeve (207), and the elastic buffer device (222) comprises a sliding sleeve (219), a push rod (221) arranged in the sliding sleeve (219) and a fifth elastic piece (220) which is arranged in the sliding sleeve (219) and acts on the push rod (221); the sliding sleeve (219) is installed on the base (201), the ejector rod (221) is arranged at the center of the sliding sleeve (219), and the ejector rod (221) is coaxial with the axis of the screwdriver bit replacing sleeve (207).

9. The automatic batch head switching device according to claim 8, wherein: the lifting device is characterized in that a guide post (203) is arranged below the supporting plate (202), a guide sleeve (204) is arranged on the base (201), the guide post (203) on the supporting plate (202) is connected to the guide sleeve (204) of the base (201) in a sliding mode, and a first jacking device (206) for driving the supporting plate (202) to lift is arranged on the base (201).

10. The automatic batch head switching device according to claim 1, wherein: the power device (103) is preferably a torque motor, and an output shaft of the torque motor is connected with the sleeve (101) by using a linkage shaft.

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