CN220698764U

CN220698764U - Screw assembly quality

Info

Publication number: CN220698764U
Application number: CN202322296107.2U
Authority: CN
Inventors: 赖国敏; 朱雪英; 李锐权; 刘秀文
Original assignee: Guangdong Jisheng Electromechanical Equipment Co ltd
Current assignee: Guangdong Jisheng Electromechanical Equipment Co ltd
Priority date: 2023-08-25
Filing date: 2023-08-25
Publication date: 2024-04-02
Anticipated expiration: 2033-08-25

Abstract

The utility model discloses a screw assembling device which comprises a workbench, wherein a rotating device used for placing an air-conditioning terminal and driving the air-conditioning terminal to rotate is arranged in the middle of the top of the workbench, a first feeding device and a second feeding device which are used for accurately feeding the air-conditioning terminal in a magnetic adsorption mode and capable of detecting feeding are arranged on the workbench on one side of the rotating device, a third feeding device is arranged on the workbench on the other side of the rotating device, and a screw beating mechanism capable of simultaneously processing a plurality of screws on the air-conditioning terminal is arranged on the workbench on the other side of the rotating device. According to the utility model, the screw punching processing of the three different positions of the air conditioner terminal on the same production line is realized, the empty material can be detected and prevented during feeding, the processing efficiency and the yield are effectively improved, and the screw punching processing device can be suitable for adjusting and processing products of different types without additional customizing devices.

Description

Screw assembly quality

Technical Field

The utility model relates to the technical field of air conditioner part machining devices, in particular to a screw assembly device.

Background

In the air conditioner production process, there are many parts such as air conditioner terminals and the like that need to be structurally reinforced by screwing or facilitate subsequent processing.

At present, a common method for processing an air conditioner terminal generally comprises the steps of feeding the air conditioner terminal through a common feeding mechanism and then screwing through an electric batch, but the method can only feed and screw a single material at a time, and for the condition that a plurality of positions are required to screw on the same air conditioner terminal, repeated feeding and electric batch processing are required, the steps are troublesome and the processing efficiency is slow, a detection device is not generally arranged in a conventional common feeding device, the condition of empty discharging can occur during feeding, and the finished product rate is influenced to a certain extent. The cost is higher when the feeding device is customized for the air conditioner terminals, and the air conditioner terminals with different models are additionally customized after being replaced, and the electric batch is also required to be synchronously customized and replaced, so that the cost is further increased due to inconvenience.

Therefore, it is necessary to provide a screw assembly device capable of detecting and feeding a plurality of positions of an air conditioner terminal at the same time, adjusting according to different product requirements, matching electric batch with the screw assembly device, and being simple in step and convenient to process.

Disclosure of Invention

The present utility model provides a screw assembling device to solve the above-mentioned problems in the prior art.

In order to solve the problems, the utility model adopts the following technical scheme:

the utility model provides a screw assembly quality, includes the workstation, workstation top intermediate position is equipped with one and is used for placing the air conditioner terminal and drives the rotatory rotary device of air conditioner terminal, be equipped with on the workstation of rotary device one side and be used for carrying out accurate material loading and detectable material loading's feedway first, feedway second, feedway third through the magnetism absorption mode for the air conditioner terminal, be equipped with on the workstation of rotary device opposite side and carry out the screw mechanism of beating that processes to a plurality of screws on the air conditioner terminal simultaneously. The guard rail is arranged around the workbench, the operation opening is formed in the guard rail on the front face of the workbench, and workers sit at the operation opening to process.

Preferably, the structure of the first feeding device, the second feeding device and the third feeding device is the same, the first feeding device comprises a vibration disc arranged on a workbench, a discharge end of the vibration disc is connected with a conveying table, a conveying groove is formed in the conveying table, the first feeding device further comprises a discharge table, a discharge groove is formed in the discharge table, the vibration disc is communicated with the discharge groove through the conveying groove, a pushing device for moving materials is arranged in the discharge groove, an optical eye sensor and an adsorption device for transferring the materials to a die are arranged right above the discharge groove, and the material conveying device, the pushing device, the optical eye sensor and the adsorption device are respectively connected with a controller.

Preferably, the pushing device comprises a first cylinder, a pushing rod is connected to the movable end of the first cylinder, the pushing rod is located in the discharging groove, a notch matched with the material in shape is formed in one side, facing the conveying groove, of the pushing rod, the notch corresponds to the discharging end of the conveying groove when the first cylinder does not work, the first cylinder is connected with the controller, the photo eye sensor is mounted on the discharging table, and the sensing end of the photo eye sensor faces the notch position corresponding to the discharging end of the conveying groove. The optical eye sensor detects whether nuts are arranged at the notch positions or not, and the separation groove is prevented from transporting the nuts by air. The gap is used for receiving nuts conveyed out of the conveying groove, and the first air cylinder works to drive the pushing rod to move, so that the gap moves to the position right below the adsorption device.

Preferably, the adsorption device comprises a fixing frame fixed on one side of the conveying table, a first supporting plate is arranged at the upper end of the fixing frame, a second air cylinder is arranged on the first supporting plate, the movable end of the second air cylinder faces the direction of the die, and a telescopic adsorption device is arranged on the movable end of the second air cylinder. The telescopic adsorption device adsorbs the nut, and the cylinder II moves the telescopic adsorption device to the position right above the die from the position right above the notch, and then places the nut on the die. The fixing frame is detachably mounted on the conveying table through bolts, the first supporting plate is detachably connected with the fixing frame through bolts, and the connection position and the connection angle can be adjusted according to the needs of the product model.

Preferably, the rotating device comprises a motor arranged in the workbench, a rotating disc is arranged at the top of the workbench, an output shaft of the motor extends out of the top of the workbench and is connected with the center of the rotating disc, and a circle of die for placing an air conditioner terminal is arranged at the top of the rotating disc by taking the center of the rotating disc as the center of a circle.

Preferably, the telescopic adsorption device comprises a third cylinder fixed on the movable end of the second cylinder, the movable end of the third cylinder is downwards arranged, the movable end of the third cylinder is located right above the notch position of the first cylinder after the first cylinder works when the second cylinder does not work, the movable end of the third cylinder is located right above the die when the movable end of the second cylinder stretches out and works, an electromagnet is arranged at the movable end of the third cylinder, and the second cylinder, the third cylinder and the electromagnet are respectively connected with the controller. The second cylinder is used for horizontally moving the third cylinder, the third cylinder is used for vertically moving the electromagnet, and the nut is adsorbed and lifted or put down through the electromagnet.

Preferably, the screw driving mechanism comprises a jig frame, a cylinder IV is arranged at the top of the jig frame, a fixing device I and a fixing device II are arranged at the movable end of the cylinder IV downwards, the fixing device I is located right above the fixing device II, a plurality of electric batches are adjustably arranged on the fixing device I, a plurality of batch heads are adjustably arranged on the fixing device II, and the top of each batch head is connected with the bottom of the corresponding electric batch through a universal joint. Connect the electricity through the universal joint and criticize the head, the position between the electric batch of arrangement that can be more convenient makes and criticizes between the head and solve more, more conveniently processes the screw that is close to on the terminal, prevents that the electricity from criticizing too big and leading to two of different electricity to criticize the interval between the head and can't satisfy less interval screw and process.

Preferably, the first fixing device comprises a second supporting plate, a plurality of first sliding grooves are formed in the second supporting plate, first sliding blocks are adjustably mounted on the first sliding grooves, and the electric screwdriver is fixedly mounted with the sliding blocks through screws. The position of the electric batch is adjusted by adjusting the position of the first sliding block on the first sliding groove.

Preferably, the second fixing device comprises a third supporting plate, a plurality of second sliding grooves are formed in the third supporting plate, second sliding blocks are adjustably mounted on the second sliding grooves, sleeves are fixedly mounted on the second sliding blocks, and heads of the electric batch penetrate through the sleeves and face to molds on the lower rotating disc. The position of the sleeve is adjusted by adjusting the position of the second sliding block in the second sliding groove. The position of the batch head is limited by the sleeve, so that the batch head can rotate in the sleeve to process the air conditioner terminal below while the batch head can change along with the position of the sleeve.

Preferably, 2 connecting rods are arranged between the second supporting plate and the third supporting plate. Is used for fixing the second support plate and the third support plate.

Preferably, the jig frame comprises a mounting frame, a fixing plate is arranged at the top of the mounting frame, the fourth air cylinder is arranged on the fixing plate, and the movable end of the fourth air cylinder downwards penetrates through the second supporting plate and is fixedly connected with the third supporting plate. When the cylinder four works, the support plate two and the support plate three can be driven to lift simultaneously.

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

according to the utility model, the first feeding device, the second feeding device and the third feeding device are arranged on the side surface of the rotating device to feed the nuts at three positions of the air conditioner terminal respectively, the optical eye sensor is arranged on the discharging table to detect the nuts, so that the situation of empty nuts is prevented, the conveying table, the fixing frame and the supporting frame are detachably and adjustably connected, so that the nuts can be used by adjustment after the dies are replaced for producing different products, the second cylinder drives the third cylinder to move, the electromagnet adsorbs and extracts the nuts, and the effect of accurately placing the nuts at the preset positions is realized;

the first fixing device and the second fixing device are respectively provided with a plurality of electric batches and a batch head corresponding to the first fixing device, the electric batches and the batch head are connected through the universal joint, the effect of assembling a plurality of screws simultaneously is achieved, and meanwhile, the universal joint can more conveniently arrange the positions between the electric batches, so that air conditioner terminals of different types are matched for processing.

Drawings

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

FIG. 2 is a top view of the present utility model;

FIG. 3 is a schematic view of a feeding device according to the present utility model;

FIG. 4 is a schematic diagram of the adsorption apparatus according to the present utility model;

FIG. 5 is a schematic view of a screw driving mechanism according to the present utility model;

FIG. 6 is an enlarged view of a gimbal portion of the present utility model;

the device comprises a workbench, a protective fence, a 12 operation port, a 2 rotating device, a 21 rotating disc, a 22 die, a 23 motor, a 31 feeding device I, a 32 feeding device II, a 33 feeding device III, a 311 vibration disc, a 312 conveying table, a 313 conveying groove, a 314 discharging table, a 315 discharging groove, a 316 cylinder I, a 317 pushing rod, a 318 notch, a 319 eye sensor, a 320 telescopic adsorption device, a 321 fixing rod, a 322 supporting plate I, a 323 cylinder II, a 324 cylinder III, a 325 electromagnet, a 4 screw driving mechanism, a 41 jig frame, a 421 mounting rack, a 422 fixing plate, a 423 connecting rod, a 42 cylinder IV, a 43 fixing device I, a 431 supporting plate II, a 432 sliding groove I, a 433 sliding block I, a 44 fixing device II, a 441 supporting plate III, a 442 sliding groove II, a 443 sliding block II, a 444 sleeve, a 45 electric batch, a 46 batch head and a 47 universal joint.

Detailed Description

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

Referring to fig. 1-6, a screw assembling device comprises a workbench 1, a rotating device 2 for placing an air-conditioning terminal and driving the air-conditioning terminal to rotate is arranged in the middle position of the top of the workbench 1, a first feeding device 31, a second feeding device 32 and a third feeding device 33 for accurately feeding and detecting feeding the air-conditioning terminal in a magnetic adsorption mode are arranged on the workbench 1 on one side of the rotating device 2, and a screw beating mechanism 4 capable of simultaneously processing a plurality of screws on the air-conditioning terminal is arranged on the workbench 1 on the other side of the rotating device 2. Guard rails 11 are arranged around the workbench 1, an operation opening 12 is formed in the guard rails 11 on the front face of the workbench 1, and workers sit at the operation opening 12 to process.

The structure of the first feeding device 31, the second feeding device 32 and the third feeding device 33 is the same, the first feeding device 31 comprises a vibration disc 311 arranged on a workbench 1, a discharge end of the vibration disc 311 is connected with a conveying table 312, a conveying groove 313 is formed in the conveying table 312, the first feeding device further comprises a discharging table 314, a discharging groove 315 is formed in the discharging table 314, the vibration disc 311 is communicated with the discharging groove 315 through the conveying groove 313, a pushing device for moving materials is arranged in the discharging groove 315, an optical eye sensor 319 and an adsorption device for transferring the materials to a die 22 are arranged right above the discharging groove 315, and the material conveying device, the pushing device, the optical eye sensor 319 and the adsorption device are respectively connected with a controller.

The pushing device comprises a first cylinder 316, a pushing rod 317 is connected to the movable end of the first cylinder 316, the pushing rod 317 is located in the discharging groove 315, a notch 318 matching with the material is arranged on one side of the pushing rod 317 facing the conveying groove 313, the notch 318 corresponds to the discharging end of the conveying groove 313 when the first cylinder 316 does not work, the first cylinder 316 is connected with the controller, the photo eye sensor 319 is mounted on the discharging table 314, and the sensing end of the photo eye sensor 319 faces the notch 318 corresponding to the discharging end of the conveying groove 313. The photo eye sensor 319 detects whether a nut is present at the notch 318 position, preventing the separation groove from air transporting the nut. The notch 318 receives the nut delivered from the delivery slot 313, and the first cylinder 316 operates to drive the push rod 317 to move so that the notch 318 moves directly under the suction device.

The adsorption device comprises a fixing frame fixed on one side of the conveying table 312, a first supporting plate 322 is arranged at the upper end of the fixing frame, a second air cylinder 323 is arranged on the first supporting plate 322, the movable end of the second air cylinder 323 faces the direction of the die 22, and the movable end of the second air cylinder 323 is provided with a telescopic adsorption device 320. The telescopic adsorption device 320 adsorbs the nuts, and the second cylinder 323 moves the telescopic adsorption device 320 from right above the notch 318 to right above the die 22, so that the nuts are placed on the products on the die 22. The mount passes through bolt demountable installation on carrying platform 312, and the backup pad is first 322 and the mount can be dismantled through the bolt and be connected, can adjust hookup location and angle of connection according to the product model needs.

The rotating device 2 comprises a motor 23 arranged in the workbench 1, a rotating disc 21 is arranged at the top of the workbench 1, an output shaft of the motor 23 extends out of the top of the workbench 1 and is connected with the center of the rotating disc 21, and a circle of die 22 for placing an air conditioner terminal is arranged at the top of the rotating disc 21 by taking the center of the rotating disc 21 as the center of a circle.

The telescopic adsorption device 320 comprises a third cylinder 324 fixed on the movable end of a second cylinder 323, the movable end of the third cylinder 324 is downwards arranged, the movable end of the third cylinder 324 is located right above the notch 318 position after the first cylinder 316 works when the second cylinder 323 does not work, the movable end of the third cylinder 324 is located right above the die 22 when the movable end of the second cylinder 323 stretches out and works, an electromagnet 325 is arranged at the movable end of the third cylinder 324, and the second cylinder 323, the third cylinder 324 and the electromagnet 325 are respectively connected with a controller. The second cylinder 323 is used for horizontally moving the third cylinder 324, the third cylinder 324 is used for vertically moving the electromagnet 325, and the nut is lifted or put down by the electromagnet 325.

The screw driving mechanism 4 comprises a jig frame 41, a fourth air cylinder 42 is arranged at the top of the jig frame 41, a first fixing device 43 and a second fixing device 44 are arranged at the movable end of the fourth air cylinder 42 downwards, the first fixing device 43 is located right above the second fixing device 44, a plurality of electric batches 45 are adjustably arranged on the first fixing device 43, a plurality of batch heads 46 are adjustably arranged on the second fixing device 44, and the top of each batch head 46 is connected with the bottom of the corresponding electric batch 45 through a universal joint 47. Connect electric batch 45 and batch head 46 through universal joint 47, the position between the electric batch 45 of arrangement that can be more convenient makes and can solve more between the batch head 46, more conveniently processes the screw that is close to on the terminal, prevents that electric batch 45 is too big to lead to two batches of interval between the head 46 of different electric batches 45 can't satisfy less interval screw and process.

The first fixing device 43 comprises a second support plate 431, a plurality of first sliding grooves 432 are formed in the second support plate 431, first sliding blocks 433 are adjustably mounted on the first sliding grooves 432, and the electric screwdriver 45 is fixedly mounted with the sliding blocks through screws. The position of the electric batch 45 is adjusted by adjusting the position of the first slider 433 on the first chute 432.

The second fixing device 44 includes a third support plate 441, the third support plate 441 is provided with a plurality of second sliding grooves 442, a second sliding block 443 is adjustably mounted on the second sliding grooves 442, a sleeve 444 is fixedly mounted on the second sliding block 443, and the head of the electric screwdriver 45 passes through the sleeve 444 and faces the die 22 on the lower rotary disc 21. The position of sleeve 444 is adjusted by adjusting the position of second 443 within second slot 442. The position of the batch head 46 is defined by the sleeve 444 such that the batch head 46 can be rotated within the sleeve 444 to machine the underlying air conditioning terminal while the batch head 46 is varied with the position of the sleeve 444.

And 2 connecting rods 423 are arranged between the second supporting plate 431 and the third supporting plate 441. For fixing the second support plate 431 and the third support plate 441.

The jig frame 41 comprises a mounting frame 421, a fixing plate 422 is arranged at the top of the mounting frame 421, a fourth air cylinder 42 is arranged on the fixing plate 422, and the movable end of the fourth air cylinder 42 downwards passes through a second supporting plate 431 and is fixedly connected with a third supporting plate 441. When the fourth air cylinder 42 works, the second support plate 431 and the third support plate 441 can be driven to lift simultaneously.

When the utility model is used, a worker is positioned at the operation port 12, an unprocessed air-conditioning terminal is placed on the die 22, the motor 23 is started to drive the rotary disk 21 to rotate, the die 22 moves to the lower part of the first feeding device 31 through the rotary disk 21, nuts enter the conveying groove 313 through the vibration of the vibration disk 311, enter the discharging groove 315 through the conveying groove 313, and the optical eye sensor 319 detects whether nuts exist at the notch 318 when the nuts are conveyed to the notch 318. If the vibration plate 311 does not work continuously, if the vibration plate 311 does not work, the vibration plate 311 stops working, the pushing rod 317 is pushed forward by the first cylinder 316 to enable the notch 318 to move to be right below the electromagnet 325, the electromagnet 325 is moved down by the third cylinder 324 to absorb the nut in the notch 318, then the nut is lifted by the electromagnet 325 after the third cylinder 324 is reset, the third cylinder 324 and the electromagnet 325 are moved to be right above the die 22 by the second cylinder 323, the electromagnet 325 is driven to move down by the third cylinder 324 again, the nut is placed on a product of the die 22 after the electromagnet 325 stops absorbing the nut, then the next air-conditioning terminal is reset by the first cylinder 316, the second cylinder 323 and the third cylinder 324 to feed, then the feeding device 33 is rotated by the rotary disk 21, the air-conditioning terminal is sequentially operated by the second cylinder 32 and the feeding device 33, the second cylinder 32 and the feeding device 33 are repeatedly operated above, and the nut is placed at corresponding positions.

The air conditioner terminal passes through the third feeding device 33 and then goes below the screw driving mechanism 4, the electric screwdriver 45 is started, the electric screwdriver 45 works to drive the screwdriver head 46 to rotate through the universal joint 47 to assemble screws below, the screwdriver head 46 can rotate in the sleeve 444 during the period, and the sleeve 444 plays a role in limiting the screwdriver head 46. When different products are replaced, the required batch heads 46 can be replaced, the electric batch 45 and the batch heads 46 are installed relatively to the number according to the requirements of the products, the position of the first slider 433 in the first chute 432 and the position of the second slider 443 in the second chute 442 are adjusted according to the screw positions of the products, and meanwhile the movable end of the air cylinder is adjusted, so that the heights of the electric batch 45 and the batch heads 46 are adjusted.

According to the utility model, the screw punching processing of the three different positions of the air conditioner terminal on the same production line is realized, the empty material can be detected and prevented during feeding, the processing efficiency and the yield are effectively improved, and the screw punching processing device can be suitable for adjusting and processing products of different types without additional customizing devices.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. Screw assembly quality, including workstation (1), its characterized in that: the utility model discloses a screw driving device for air conditioner terminal, including workstation (1), work bench (2), screw driving mechanism (4) that is equipped with one in the middle position at workstation (1) top be equipped with one and is used for placing air conditioner terminal and drives rotatory rotary device (2) of air conditioner terminal, be equipped with on workstation (1) of rotary device (2) one side and be used for carrying out accurate material loading and detectable material loading for air conditioner terminal through the magnetism absorption mode and feedway one (31), feedway two (32), feedway three (33), be equipped with on workstation (1) of rotary device (2) opposite side and carry out the screw driving mechanism (4) that processes to a plurality of screws on the air conditioner terminal simultaneously.

2. A screw assembly device according to claim 1, wherein: the feeding device is characterized in that the feeding device I (31), the feeding device II (32) and the feeding device III (33) are identical in structure, the feeding device I (31) comprises a vibration disc (311) arranged on a workbench (1), a discharge end of the vibration disc (311) is connected with a conveying table (312), a conveying groove (313) is formed in the conveying table (312), the feeding device further comprises a discharging table (314), a discharging groove (315) is formed in the discharging table (314), the vibration disc (311) is communicated with the discharging groove (315) through the conveying groove (313), a pushing device for moving materials is arranged in the discharging groove (315), an optical eye sensor (319) and an adsorption device for transferring the materials to a die (22) are arranged right above the discharging groove (315), and the pushing device, the optical eye sensor (319) and the adsorption device are respectively connected with a controller.

3. A screw assembly device according to claim 2, wherein: the pushing device comprises a first cylinder (316), a pushing rod (317) is connected to the movable end of the first cylinder (316), the pushing rod (317) is located in a discharging groove (315), a notch (318) matched with the shape of a material is formed in one side, facing the conveying groove (313), of the pushing rod (317), the notch (318) corresponds to the discharging end of the conveying groove (313) when the first cylinder (316) does not work, the first cylinder (316) is connected with a controller, the photo eye sensor (319) is installed on a discharging table (314), and the sensing end of the photo eye sensor (319) faces the position of the notch (318) corresponding to the discharging end of the conveying groove (313).

4. A screw assembly device according to claim 3, wherein: the adsorption device comprises a fixing frame fixed on one side of the conveying table (312), a first supporting plate (322) is arranged at the upper end of the fixing frame, a second air cylinder (323) is arranged on the first supporting plate (322), the movable end of the second air cylinder (323) faces the direction of the die (22), and the movable end of the second air cylinder (323) is provided with a telescopic adsorption device (320).

5. A screw assembly device according to claim 4, wherein: the rotating device (2) comprises a motor (23) arranged in the workbench (1), a rotating disc (21) is arranged at the top of the workbench (1), an output shaft of the motor (23) extends out of the top of the workbench (1) and is connected with the center of the rotating disc (21), and a circle of die (22) for placing an air conditioner terminal is arranged at the top of the rotating disc (21) by taking the center of the rotating disc (21) as the center of a circle.

6. A screw assembly device according to claim 5, wherein: the telescopic adsorption device (320) comprises a cylinder III (324) fixed on the movable end of a cylinder II (323), the movable end of the cylinder III (324) is downwards arranged, the movable end of the cylinder III (324) is located right above a notch (318) position after the cylinder I (316) works when the cylinder II (323) does not work, the movable end of the cylinder III (324) is located right above a die (22) when the movable end of the cylinder II (323) stretches out and works, an electromagnet (325) is arranged at the movable end of the cylinder III (324), and the cylinder II (323), the cylinder III (324) and the electromagnet (325) are respectively connected with a controller.

7. A screw assembly device according to any one of claims 1-6, wherein: the screw driving mechanism (4) comprises a jig frame (41), a cylinder IV (42) is arranged at the top of the jig frame (41), a fixing device I (43) and a fixing device II (44) are arranged at the movable end of the cylinder IV (42) downwards, the fixing device I (43) is located right above the fixing device II (44), a plurality of electric batches (45) are adjustably arranged on the fixing device I (43), a plurality of batch heads (46) are adjustably arranged on the fixing device II (44), and the tops of the batch heads (46) are connected with the bottoms of the corresponding electric batches (45) through universal joints (47).

8. A screw assembly device according to claim 7, wherein: the first fixing device (43) comprises a second supporting plate (431), a plurality of first sliding grooves (432) are formed in the second supporting plate (431), first sliding blocks (433) are adjustably mounted on the first sliding grooves (432), and the electric screwdriver (45) is fixedly mounted with the sliding blocks through screws.

9. A screw assembly device according to claim 8, wherein: the fixing device II (44) comprises a support plate III (441), a plurality of sliding grooves II (442) are formed in the support plate III (441), sliding blocks II (443) are adjustably mounted on the sliding grooves II (442), sleeves (444) are fixedly mounted on the sliding blocks II (443), heads of the electric batch (45) penetrate through the sleeves (444) to face the molds (22) on the lower rotating disc (21), and the positions of the sleeves (444) are adjusted by adjusting the positions of the sliding blocks II (443) in the sliding grooves II (442).

10. A screw assembly device according to claim 9, wherein: the smelting tool frame (41) comprises a mounting frame (421), a fixing plate (422) is arranged at the top of the mounting frame (421), a fourth air cylinder (42) is arranged on the fixing plate (422), the movable end of the fourth air cylinder (42) downwards penetrates through a second supporting plate (431) and is fixedly connected with a third supporting plate (441), and 2 connecting rods (423) are arranged between the second supporting plate (431) and the third supporting plate (441).