Screw replacing structure for screw machine

Abstract

The utility model relates to the technical field of screw machines, and discloses a screw replacing structure for a screw machine, which comprises an electric screwdriver mechanism, a screw replacing mechanism, a material conveying pipe and a screw main body, the side surface of the screw replacing mechanism is fixedly connected with the side surface of the electric screwdriver mechanism, the bottom end of the material conveying pipe is fixedly connected with the top end of the screw replacing mechanism, and the screw main body is fixedly connected with the screw replacing mechanism. The side face of the screw body is movably connected with the inner wall of the side face of the screw replacing mechanism. The screw body is conveniently guided through the conical structure composed of the four movable plates, the tooth portion of the screw body conveniently penetrates through the balls to stretch out of the movable plates, and the balls block the head of the screw body and remain in the movable plates. Afterwards, the pneumatic telescopic rod drives the connecting pipe to move upwards so that the bottom end of the screwdriver head can make contact with the top end of the screw body, the balls roll along the head of the screw body so that the four movable plates can rotate outwards along the bottom end of the connecting cylinder, the screw body can be prevented from falling, meanwhile, the friction force between the screw body and the screw replacing mechanism is reduced, and abrasion is reduced.

Description

Technical Field

[0001] This utility model relates to the field of screw machine technology, and more specifically to a screw changing structure for screw machines. Background Technology

[0002] A screw fastening machine is a small, automated machine for fastening screws. Its operating structure can generally be divided into two parts: a feeding section and an electric screwdriver section. The feeding section is responsible for screening and providing screws, while the electric screwdriver section is responsible for picking up and fastening the screws. The emergence of screw fastening machines has both improved work efficiency and reduced the intensity of manual labor.

[0003] Existing technology has shortcomings: The screw machine has a screw changing structure at the bottom, which is connected to the feed pipe of the feeding section on the side. During use, the screw is placed at the bottom of the bit through the screw changing structure for easy installation. However, the screw angle is prone to deviation during use and cannot be aligned with the bit, which can cause it to fall off and affect the subsequent tightening of the screw. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a screw changing structure for a screw machine to solve the problems existing in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a screw changing structure for a screw machine, comprising an electric screwdriver mechanism, and further comprising: a screw changing mechanism, a feed tube, and a screw body. The side of the screw changing mechanism is fixedly connected to the side of the electric screwdriver mechanism, the bottom end of the feed tube is fixedly connected to the top end of the screw changing mechanism, and the side of the screw body is movably connected to the inner wall of the side of the screw changing mechanism. The electric screwdriver mechanism includes an electric screwdriver body, and a screwdriver bit is movably sleeved on the bottom end of the electric screwdriver body. The screw changing mechanism includes a mounting block, and the top end of the mounting block is fixedly positioned corresponding to the screwdriver bit. A through hole is provided at the mounting block position. A pneumatic telescopic rod is fixedly connected to the side of the mounting block. The top end of the pneumatic telescopic rod is fixedly connected to the side of the electric screwdriver body. A connecting pipe is fixedly connected to the side of the mounting block. The top end of the connecting pipe is fixedly connected to the bottom end of the material conveying pipe. A material conveying channel is provided on the side of the mounting block corresponding to the position of the connecting pipe. A connecting cylinder is fixedly connected to the bottom end of the mounting block. Four movable plates are movably connected to the bottom end of the connecting cylinder. Ball bearings are movably sleeved on the inner side wall of the movable plates. The four movable plates form a conical structure.

[0006] Furthermore, a second connecting block is fixedly connected to the side of the connecting cylinder, a connecting column is fixedly connected to the side of the second connecting block, a first connecting block is movably sleeved on the side of the connecting column, the side of the first connecting block is fixedly connected to the side of the movable plate, and a torsion spring is fixedly connected to the side of the second connecting block, the side of the torsion spring is fixedly connected to the side of the first connecting block.

[0007] Furthermore, a limiting block is provided on the side of the connecting column, and the side of the limiting block is movably connected to the side of the first connecting block.

[0008] Furthermore, a sensor is fixedly connected to the side of the material conveying channel, and the side of the sensor is flush with the side of the material conveying channel.

[0009] Furthermore, the centerline of the connecting tube forms a 30-degree angle with the centerline of the bit.

[0010] Furthermore, the inner side walls of the material conveying channel, the inner side walls of the connecting cylinder, and the inner side walls of the movable plate are all polished.

[0011] Furthermore, a mounting hole is provided at the top of the mounting block corresponding to the position of the electric screwdriver body, a buffer spring is fixedly connected to the bottom of the mounting hole, and a buffer pad is fixedly connected to the top of the buffer spring.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] 1. This utility model involves a screw body being moved from the feeding channel and falling into the movable plate through a through hole. The conical structure composed of four movable plates facilitates the guidance of the screw body, allowing the screw teeth to pass through the ball bearings and extend out of the movable plate. The ball bearings block the head of the screw body, keeping it inside the movable plate. Then, a pneumatic telescopic rod drives the connecting tube upward, causing the bottom of the bit to contact the top of the screw body. The ball bearings roll along the head of the screw body, causing the four movable plates to rotate outward along the bottom of the connecting tube, thereby pushing the screw body out of the movable plate. The bottom of the bit carries a magnetic force to attract the screw body, preventing it from falling. The feeding section then transports another screw body into the feeding channel, which helps prevent the screw body from falling and reduces the friction between the screw body and the thread changing mechanism, thus reducing wear.

[0014] 2. When the mounting block moves upward via the pneumatic telescopic rod, the buffer pad contacts the bottom of the electric screwdriver body, and the buffer spring contracts to buffer the electric screwdriver body, reducing the impact force of the mounting block on the electric screwdriver body, which helps to reduce damage to the equipment and extend the service life of the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the wire changing mechanism of this utility model;

[0017] Figure 3 For the present utility model Figure 2 Schematic diagram of the structure at point A;

[0018] Figure 4 This is a schematic diagram of the connecting column structure of this utility model;

[0019] Figure 5 For the present utility model Figure 2 Schematic diagram of the cross-sectional structure at point B;

[0020] Figure 6 This is a schematic cross-sectional view of the wire changing mechanism of this utility model;

[0021] Figure 7 This is a schematic diagram of the movable plate structure of this utility model.

[0022] The attached figures are labeled as follows: 1. Electric screwdriver mechanism; 101. Electric screwdriver body; 102. Screwdriver bit; 2. Wire changing mechanism; 201. Mounting block; 202. Connecting pipe; 203. Pneumatic telescopic rod; 204. Movable plate; 205. Buffer pad; 206. Connecting cylinder; 207. First connecting block; 208. Second connecting block; 209. Connecting column; 2091. Limiting block; 210. Torsion spring; 211. Buffer spring; 212. Mounting hole; 213. Material conveying channel; 214. Sensor; 215. Ball bearing; 216. Through hole; 3. Material conveying pipe; 4. Screw body. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The screw changing structure for a screw machine involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] Reference Figures 1 to 7This utility model provides a screw changing structure for a screwdriver, including an electric screwdriver mechanism 1, and further including a screw changing mechanism 2, a feed pipe 3, and a screw body 4. The side of the screw changing mechanism 2 is fixedly connected to the side of the electric screwdriver mechanism 1, the bottom end of the feed pipe 3 is fixedly connected to the top end of the screw changing mechanism 2, and the side of the screw body 4 is movably connected to the inner wall of the side of the screw changing mechanism 2. The electric screwdriver mechanism 1 includes an electric screwdriver body 101, and a screwdriver bit 102 is movably sleeved on the bottom end of the electric screwdriver body 101. The screw changing mechanism 2 includes a mounting block 201, and the top end of the mounting block 201 is positioned corresponding to the location of the screwdriver bit 102. The mounting block 201 has a through hole 216. A pneumatic telescopic rod 203 is fixedly connected to the side of the mounting block 201. The top end of the pneumatic telescopic rod 203 is fixedly connected to the side of the electric screwdriver body 101. A connecting pipe 202 is fixedly connected to the side of the mounting block 201. The top end of the connecting pipe 202 is fixedly connected to the bottom end of the conveying pipe 3. A conveying channel 213 is provided on the side of the mounting block 201 corresponding to the position of the connecting pipe 202. A connecting cylinder 206 is fixedly connected to the bottom end of the mounting block 201. Four movable plates 204 are movably connected to the bottom end of the connecting cylinder 206. The inner wall of the side of the movable plate 204 is movably sleeved. The screw body 4, connected to ball bearings 215, is formed by four movable plates 204 in a conical structure. The feeding section conveys a screw body 4 through the feeding pipe 3 and connecting pipe 202 into the feeding channel 213. When a screw needs to be changed, the pneumatic telescopic rod 203 pushes the mounting block 201 downwards, moving the bottom of the screwdriver bit 102 above the feeding channel 213. The screw body 4 moves out of the feeding channel 213, falls through the through hole 216 into the movable plate 204. The conical structure formed by the four movable plates 204 facilitates the guidance of the screw body 4, allowing the threads of the screw body 4 to pass through the ball bearings 215. Extending the movable plate 204, the ball bearing 215 blocks the head of the screw body 4 and keeps it inside the movable plate 204. Then, the pneumatic telescopic rod 203 drives the connecting tube 202 to move upward so that the bottom end of the bit 102 contacts the top end of the screw body 4. The ball bearing 215 rolls along the head of the screw body 4, causing the four movable plates 204 to rotate outward along the bottom end of the connecting tube 206, thereby pushing the screw body 4 out of the movable plate 204. The bottom of the bit 102 carries a magnetic force to attract the screw body 4 to prevent it from falling. The material conveying section then conveys another screw body 4 into the material conveying channel 213.

[0025] The connecting cylinder 206 has a second connecting block 208 fixedly connected to its side, a connecting post 209 fixedly connected to its side, a first connecting block 207 movably sleeved on its side, a side of the first connecting block 207 fixedly connected to the side of the movable plate 204, and a torsion spring 210 fixedly connected to the side of the second connecting block 208. The side of the torsion spring 210 is fixedly connected to the side of the first connecting block 207. When the bit 102 pushes the screw body 4 downward, the four movable plates 204 rotate outward along the connecting post 209, and the torsion spring 210 deforms. When the screw body 4 moves out of the movable plate 204, the torsion spring 210 resets and drives the first connecting block 207 to rotate along the connecting post 209, so that the four movable plates 204 fit together.

[0026] The connecting column 209 is provided with a limiting block 2091 on its side. The side of the limiting block 2091 is movably connected to the side of the first connecting block 207. When the first connecting block 207 rotates along the connecting column 209, the two sides of the first connecting block 207 are tightly attached to the side of the limiting block 2091 to prevent the movable plate 204 from shaking and to ensure that the four movable plates 204 are accurately attached together.

[0027] A sensor 214 is fixedly connected to the side of the material conveying channel 213. The side of the sensor 214 is flush with the side of the material conveying channel 213. The sensor 214 detects whether there is a screw body 4 inside the material conveying channel 213. If no screw body 4 is detected, a signal is sent to the material conveying component to feed the material.

[0028] The centerline of the connecting pipe 202 is at a 30-degree angle to the centerline of the bit 102, which facilitates the screw body 4 to pass smoothly through the connecting pipe 202 and the material conveying channel 213 into the through hole 216 and fall into the interior of the movable plate 204.

[0029] The inner side walls of the material conveying channel 213, the inner side walls of the connecting cylinder 206, and the inner side walls of the movable plate 204 are all polished to reduce friction with the screw body 4 and ensure smooth conveying of the screw body 4.

[0030] The mounting block 201 has a mounting hole 212 at its top corresponding to the position of the electric screwdriver body 101. A buffer spring 211 is fixedly connected to the bottom of the mounting hole 212, and a buffer pad 205 is fixedly connected to the top of the buffer spring 211. When the pneumatic telescopic rod 203 drives the mounting block 201 to move upward, the buffer pad 205 contacts the bottom of the electric screwdriver body 101, and the buffer spring 211 contracts to buffer the electric screwdriver body 101, reducing the impact force of the mounting block 201 on the electric screwdriver body 101.

[0031] The working principle of this utility model is as follows: Sensor 214 detects whether there is a screw body 4 inside the feeding channel 213. When no screw body 4 is detected, a signal is sent to the feeding component to feed the screw. The feeding part conveys a screw body 4 into the feeding channel 213 through the feeding pipe 3 and the connecting pipe 202. When the screw needs to be changed, the pneumatic telescopic rod 203 pushes the mounting block 201 downward, so that the bottom end of the bit 102 moves above the feeding channel 213. The screw body 4 moves out of the feeding channel 213 and falls into the movable plate 204 through the through hole 216. The conical structure formed by the four movable plates 204 facilitates the guidance of the screw body 4, allowing the teeth of the screw body 4 to pass through the ball bearing 215 and extend out of the movable plate 204. The ball bearing 215 blocks the head of the screw body 4 and keeps it inside the movable plate 204. Then, the pneumatic telescopic rod 203 drives the connecting pipe 202 moves upward so that the bottom end of the bit 102 contacts the top end of the screw body 4. The ball 215 rolls along the head of the screw body 4, causing the four movable plates 204 to rotate outward along the connecting post 209. The torsion spring 210 deforms, thereby pushing the screw body 4 out of the movable plate 204. The bottom of the bit 102 carries a magnetic force to attract the screw body 4 to prevent it from falling. After the screw body 4 is moved out of the movable plate 204, the torsion spring 210 resets and drives the first connecting block 207 to rotate along the connecting post 209, so that the four movable plates 204 are in contact until the buffer pad 205 contacts the bottom end of the electric screwdriver body 101. The buffer spring 211 contracts to buffer the electric screwdriver body 101, reducing the impact force of the mounting block 201 on the electric screwdriver body 101, completing one screw changing procedure. After that, the material conveying section conveys another screw body 4 into the material conveying channel 213.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A screw changing structure for a screw machine, comprising an electric screwdriver mechanism (1), characterized in that, It also includes: silk changing mechanism (2), feed pipe (3) and screw body (4), the side of the silk changing mechanism (2) is fixedly connected with the side of the electric screwdriver mechanism (1), the bottom end of the feed pipe (3) is fixedly connected with the top end of the silk changing mechanism (2), the side of the screw body (4) is movably connected with the side inner wall of the silk changing mechanism (2), the electric screwdriver mechanism (1) includes electric screwdriver body (101), the bottom end of the electric screwdriver body (101) movably sleeved with screwdriver bit (102), the silk changing mechanism (2) includes mounting block (201), the top end of the mounting block (201) is provided with through hole (216) corresponding to the positioning position of the screwdriver bit (102), the side of the mounting block (201) is fixedly connected with pneumatic telescopic rod (203), the top end of the pneumatic telescopic rod (203) is fixedly connected with the side of the electric screwdriver body (101), the side of the mounting block (201) is fixedly connected with connecting pipe (202), the top end of the connecting pipe (202) is fixedly connected with the bottom end of the feed pipe (3), the side of the mounting block (201) is provided with feed channel (213) corresponding to the position of the connecting pipe (202), the bottom end of the mounting block (201) is fixedly connected with connecting cylinder (206), the bottom end of the connecting cylinder (206) is movably connected with four movable plates (204), the side inner wall of the movable plate (204) movably sleeved with ball (215), four movable plates (204) form a conical structure.

2. The thread changing structure for a screw machine according to claim 1, wherein: The side of the connecting cylinder (206) is fixedly connected with second connecting block (208), the side of the second connecting block (208) is fixedly connected with connecting column (209), the side of the connecting column (209) movably sleeved with first connecting block (207), the side of the first connecting block (207) is fixedly connected with the side of the movable plate (204), the side of the second connecting block (208) is fixedly connected with torsion spring (210), the side of the torsion spring (210) is fixedly connected with the side of the first connecting block (207).

3. The thread changing structure of claim 2, wherein: The side of the connecting column (209) is provided with limiting block (2091), the side of the limiting block (2091) is movably connected with the side of the first connecting block (207).

4. The thread changing structure of a screw machine according to claim 1, wherein: The side of the feed channel (213) is fixedly connected with inductor (214), the side of the inductor (214) is flush with the side of the feed channel (213).

5. The thread changing structure of a screw machine according to claim 1, wherein: The middle line of the connecting pipe (202) and the middle line of the screwdriver bit (102) form a thirty-degree oblique angle.

6. The thread changing structure of a screw machine according to claim 1, wherein: The side inner wall of the feed channel (213), the side inner wall of the connecting cylinder (206) and the side inner wall of the movable plate (204) are all polished.

7. The thread changing structure of a screw machine according to claim 1, wherein: The top end of the mounting block (201) is provided with mounting hole (212) corresponding to the position of the electric screwdriver body (101), the bottom end of the mounting hole (212) is fixedly connected with buffer spring (211), the top end of the buffer spring (211) is fixedly connected with buffer pad (205).

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