Automatic switching device for electric screwdriver bits

Abstract

The present invention relates to the field of mechanical processing, and discloses an automatic switching electric screwdriver head device, including an equipment support, a driving device and a rotating air circuit, wherein an electric screwdriver assembly is arranged on the outer side of the left end of the equipment support, an electric screwdriver fitting head is arranged on the lower end of the electric screwdriver assembly, the driving device is arranged on the outer side of the right end of the equipment support, a screwdriver nozzle assembly is installed on the driving device, a vacuum generator is arranged on the top of the equipment support, a filter is arranged between the vacuum generator and the rotating air circuit, the vacuum generator is connected to the filter through a sealed air pipe, and the lower end of the filter is connected to the screwdriver nozzle assembly through the rotating air circuit. In the present invention, only one electric screwdriver can be used to install three to twelve screwdriver nozzles, and a servo motor is used to drive a hollow reducer to drive the screwdriver nozzle to rotate. Different types of screws can be set at will. When replacing products, there is no need to replace accessories, so as to achieve the effect of improving efficiency and low cost.

Description

Technical Field

[0001] The invention relates to the field of mechanical processing, in particular to an automatic switching electric screwdriver bit device. Background Art

[0002] At present, many factories are vigorously promoting automation. In the production process of electronic products, screw locking is the most common work station. Manual screw locking is labor-intensive, inefficient, and quality cannot be controlled. Therefore, most products with a single type of screws and low replacement frequency have achieved automation. However, for some products, there are many types of screws and the replacement frequency is very high. The automatic screw locking machines on the market have always been difficult to achieve automation.

[0003] There are two solutions for screw machines on the market that deal with a wide variety of screws and high frequency of replacement. But each has its own shortcomings.

[0004] 1: Make the screw locking mechanism into a quick-change module. When different screws need to be locked, replace different modules. The advantage of this solution is that the structure space is small. The disadvantage is that it requires additional replacement time, low efficiency, and cannot correspond to one station, and requires multiple screws.

[0005] 2: Install multiple screw locking mechanisms on the machine, and each structure is equipped with an independent electric screwdriver and screwdriver bit, corresponding to different screws. The advantage of this solution is that it can be compatible with all types of screws without changing the mechanism. The disadvantage is that it takes up a lot of space and is costly (each type of screw requires an electric screwdriver). For this reason, we propose an automatic switching electric screwdriver bit device. Summary of the invention

[0006] The present invention mainly solves the technical problems existing in the above-mentioned prior art and provides an automatic switching electric screwdriver bit device.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme, an automatic switching electric screwdriver head device, including an equipment bracket, a driving device and a rotating air circuit, an electric screwdriver assembly is arranged on the outer side of the left end of the equipment bracket, an electric screwdriver mating head is arranged on the lower end of the electric screwdriver assembly, the driving device is arranged on the outer side of the right end of the equipment bracket, a screwdriver nozzle assembly is installed on the driving device, a vacuum generator is arranged on the top of the equipment bracket, a filter is arranged between the vacuum generator and the rotating air circuit, the vacuum generator is connected with the filter through a sealed air pipe, the lower end of the filter is connected with the screwdriver nozzle assembly through a rotating air circuit, the screwdriver nozzle assembly includes a screwdriver nozzle, a screw rod mounting plate, a linear guide rail, a screw rod limit block, a screw rod mating head and a screw rod, and the screw rod mounting plate is installed on the driving device. The lower end of the middle reducer connecting plate in the device, the batch rod mounting plate is -, the upper end of the batch rod mounting plate is provided with a linear guide rail and the top of the batch rod limit block is provided with a disc, which cooperates for limiting, the batch nozzle is installed on the upper end of the linear guide rail, the batch rod is installed at the lower end of the batch rod fitting head, the bottom of the batch rod is connected to the top of the batch nozzle, the batch rod is sleeved with a compression spring, and a tension spring is arranged between the middle reducer connecting plate and the batch nozzle assembly in the driving device. The batch nozzle assembly also includes a batch nozzle limit plate arranged on the side of the batch rod mounting plate, one end of the tension spring is connected to the middle reducer connecting plate, and the other end is connected to the batch nozzle limit plate, and the batch nozzle limit plate is connected to the batch nozzle, and the back sides of the multiple batch rod mounting plates are connected to the bearing plate, and the rotating air path is arranged on the bearing plate.

[0008] Preferably, the driving device includes a servo motor, a hollow reducer and a reducer connecting plate, the hollow reducer is fixedly mounted on the equipment bracket, the servo motor is mounted on the upper end of the hollow reducer, and the reducer connecting plate is fixedly mounted on the lower end of the hollow reducer.

[0009] Preferably, the rotary air circuit comprises a multi-way rotary joint, a nozzle assembly air nozzle, a multi-way rotary joint fixed end air nozzle and a multi-way rotary joint movable end air nozzle, the multi-way rotary joint fixed end air nozzle and the multi-way rotary joint movable end air nozzle are both installed on the multi-way rotary joint, the filter is connected to the movable end air nozzle of the multi-way rotary joint through an air pipe, the outer side of the fixed end air nozzle of the multi-way rotary joint is connected to the nozzle assembly air nozzle through an air pipe, and the nozzle assembly air nozzle is connected to the nozzle assembly and is communicated.

[0010] Preferably, a protruding positioning pin is mounted on the batch rod limit block, a hole is formed on the batch rod mating head, and the positioning pin and the hole on the batch rod mating head match in type.

[0011] Preferably, the screw rod mating head and the electric screwdriver mating head are respectively provided with matching cross protrusions at the opposite ends, and a cross groove is formed between the cross protrusions. The different deflection angles can reasonably engage the protrusions and the cross grooves.

[0012] Preferably, the vacuum generator is mounted on an equipment bracket, the number of the electric screwdriver assembly is one, and it is located directly above the working area.

[0013] Beneficial Effects

[0014] The present invention provides an automatic switching electric screwdriver bit device, which has the following beneficial effects:

[0015] (1) This automatic switching electric screwdriver head device can use only one electric screwdriver to install three to twelve screwdriver bits, and uses a servo motor to drive the hollow reducer to drive the screwdriver bit to rotate. It can meet the needs of setting different types of screws and different screw locking sequences at will. When changing products, there is no need to replace accessories, which can achieve the effect of improving efficiency and reducing costs.

[0016] (2) The automatic switching electric screwdriver bit device installs the six types of screwdriver bits together. When changing products, there is no need to wait and the switch can be made directly. Moreover, since the six types of screwdriver bits are installed in a ring shape and integrated together, the space is relatively small. The size of the device is only 145 cm long and 120 cm wide, which saves space and is easy to move. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an overall schematic diagram of the automatic switching electric screwdriver bit device proposed by the present invention;

[0018] Figure 2 This is a schematic diagram of the gas circuit of the automatic switching electric screwdriver bit device proposed by the present invention.

[0019] Legend:

[0020] 1 servo motor, 2 hollow reducer, 3 reducer connecting plate, 4 batch rod mounting plate, 5 tension spring, 6 compression spring, 7 batch rod limit block, 8 batch rod matching head, 9 electric screwdriver matching head, 10 batch rod, 11 batch nozzle assembly, 12 linear guide, 13 multi-way rotary joint, 14 vacuum generator, 15 electric screwdriver assembly, 16 filter, 17 batch nozzle assembly air nozzle, 18 multi-way rotary joint fixed end air nozzle, 19 multi-way rotary joint movable end air nozzle, 20 batch nozzle, 101 equipment bracket, 102 drive device, 103 rotary air circuit. DETAILED DESCRIPTION

[0021] The technical solution of the present invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0022] Example: Figure 1-2As shown, the automatic switching electric screwdriver head device includes an equipment support 101, a driving device 102 and a rotating air circuit 103. The electric screwdriver assembly 15 is arranged on the outer side of the left end of the equipment support 101, and the electric screwdriver mating head 9 is arranged at the lower end of the electric screwdriver assembly 15. The driving device 102 is arranged on the outer side of the right end of the equipment support 101, and a screwdriver nozzle assembly 11 is installed on the driving device 102. A vacuum generator 14 is arranged on the top of the equipment support 101, and a filter 16 is arranged between the vacuum generator 14 and the rotating air circuit 103. The vacuum generator 14 is connected to the filter 16 through a sealed air pipe, and the lower end of the filter 16 is connected to the screwdriver nozzle assembly 11 through the rotating air circuit 103. The screwdriver nozzle assembly 11 includes a screwdriver nozzle 20, a screwdriver rod mounting plate 4, a linear guide rail 12, a screwdriver rod limit block 7, a screwdriver rod mating head 8 and a screwdriver rod 10. The screwdriver rod mounting plate 4 is installed on the driving device At the lower end of the middle reducer connecting plate 3 in 102, there are 3-12 batch rod mounting plates 4, and a linear guide 12 and a disc are provided on the top of the batch rod limiting block 710 at the upper end of the batch rod mounting plate 4, which are limited by cooperation 7, and a batch nozzle 20 is installed on the upper end of the linear guide 12, and a batch rod 10 is installed at the lower end of the batch rod fitting head 8. The bottom of the batch rod 10 is connected to the top of the batch nozzle 20, and a compression spring 6 is sleeved on the batch rod 10, and a tension spring 5 is arranged between the middle reducer connecting plate 3 and the batch nozzle assembly 11 in the driving device 102. The batch nozzle assembly 11 also includes a batch nozzle limiting plate arranged on the side of the batch rod mounting plate 4, one end of the tension spring 5 is connected to the middle reducer connecting plate 3, and the other end is connected to the batch nozzle limiting plate, and the batch nozzle limiting plate is connected to the batch nozzle 20, and the back sides of the plurality of batch rod mounting plates 4 are all connected to the bearing plate, and the rotating air path 103 is arranged on the bearing plate.

[0023] The driving device 102 includes a servo motor 1, a hollow reducer 2 and a reducer connecting plate 3, the hollow reducer 2 is fixedly mounted on the equipment bracket 101, the servo motor 1 is mounted on the upper end of the hollow reducer 2, and the reducer connecting plate 3 is fixedly mounted on the lower end of the hollow reducer 2.

[0024] The rotary air circuit 103 includes a multi-way rotary joint 13, a nozzle assembly air nozzle 17, a multi-way rotary joint fixed end air nozzle 18 and a multi-way rotary joint movable end air nozzle 19, wherein the multi-way rotary joint fixed end air nozzle 18 and the multi-way rotary joint movable end air nozzle 19 are both installed on the multi-way rotary joint 13, the filter 16 is connected to the multi-way rotary joint movable end air nozzle 19 through an air pipe, the outer side of the multi-way rotary joint fixed end air nozzle 18 is connected to the nozzle assembly air nozzle 17 through an air pipe, and the nozzle assembly air nozzle 17 is connected to the nozzle assembly 11 and is communicated.

[0025] A protruding positioning pin is installed on the batch rod limit block 7, and a hole is opened on the batch rod matching head 8, and the positioning pin and the hole model on the batch rod matching head 8 match.

[0026] The opposite ends of the screwdriver rod mating head 8 and the electric screwdriver mating head 9 are respectively provided with matching cross protrusions, and a cross groove is formed between the cross protrusions. The deflection angles of 8 and 9 are different, so the protrusions and the cross grooves can be reasonably engaged.

[0027] The vacuum generator 14 is installed on the equipment bracket 101, and the number of the electric screwdriver assembly 15 is one and is located directly above the working area.

[0028] The servo motor 1 is electrically connected to the external controller to provide power for the entire device, realizing the periodic rotation of the hollow reducer 2 at equal angles. When the electric screwdriver assembly 15 presses the screwdriver nozzle assembly 11 down to lock the screw, the tension spring 5 will pull the screwdriver nozzle assembly 11 upward.

[0029] The nozzle assembly 11 is slidably mounted on a linear guide 12, and the linear guide 12 is fixedly mounted on the rod mounting plate 4 by bolts, and the nozzle assembly 11 moves up and down smoothly on the linear guide 12. The lower end of the rod 10 is sleeved inside the nozzle assembly 11, and the upper end of the rod 10 is connected to the rod engagement head 8. A compression spring 6 is placed between the rod 10 and the rod engagement head 8. The compression spring 6 pushes the rod engagement head 8 onto the rod limit block 7, and the rod limit block 7 limits the height of the rod 10. A protruding positioning pin is installed on the rod limit block 7, and a hole is opened on the rod engagement head 8. After the electric screwdriver assembly 15 is screwed, it will rotate to a suitable angle so that the pin and the hole fit together, thereby limiting the angle of the rod 10, so that it can fit smoothly when the screw is screwed next time. The electric screwdriver assembly 15 first presses the screwdriver nozzle assembly 11 down to the top of the product that needs to be screwed, then presses down the electric screwdriver mating head 9 to make it fit with the screw rod mating head 8, and then rotates the screwdriver head 10 through the electric screwdriver mating head 9 to lock the screw into the product.

[0030] The nozzle assembly 11 is connected to the multi-way rotary joint 13 through an air pipe, and the multi-way rotary joint 13 then transfers the air circuit to the vacuum generator 14. Since the vacuum generator 14 is fixed, the nozzle assembly 11 will continue to rotate when switching different nozzles 20. During the rotation of the nozzle assembly 11, the multi-way rotary joint 13 is required to switch the air circuit so that the air pipe will not be entangled and stuck. The filter 16 filters the debris absorbed by the vacuum to prevent the debris from being sucked into the vacuum generator 14, blocking and damaging the vacuum generator 14. The air nozzle 19 at the movable end of the multi-way rotary joint will rotate with the mechanism, and the air nozzle 18 at the fixed end of the multi-way rotary joint is fixed. The outside of the air nozzle 18 at the fixed end of the multi-way rotary joint is connected to the nozzle assembly air nozzle 17 through an air pipe. When switching the nozzle 20, the air nozzle 18 at the fixed end of the multi-way rotary joint will rotate together with the air nozzle 17 of the nozzle assembly to achieve the effect of switching the nozzle 20.

[0031] Working principle of the present invention:

[0032] The first step: the electric screwdriver assembly 15 presses down the screwdriver nozzle assembly 11, the vacuum generator 14 is started, and the screwdriver nozzle 20 sucks up a screw.

[0033] Step 2: The electric screwdriver assembly 15 is raised, the electric screwdriver mating head 9 is disengaged from the screwdriver nozzle mating head 8, the servo motor 1 is started, and another set of screwdriver nozzle assemblies 11 are rotated under the electric screwdriver assembly 15, and the steps of the first step are repeated to suck up another type of screw.

[0034] Step 3: Repeat the second step to suck up different screws with three to twelve screwdriver bits 20.

[0035] Step 4: The entire mechanism moves to the top of the product. The electric screwdriver assembly 15 first presses the screwdriver nozzle assembly 11 down to the top of the product where the screws need to be screwed, and then presses down the electric screwdriver mating head 9 to make it fit with the screwdriver rod mating head 8, and then rotates the screwdriver head through the screwdriver rod mating head 8 to lock the screws into the product.

[0036] Step 5: The electric screwdriver assembly 15 is raised, the electric screwdriver mating head 9 is separated from the screwdriver nozzle mating head, the servo motor 1 is started, and another set of screwdriver nozzle assemblies 11 are rotated under the electric screwdriver assembly 15, and steps 4 are repeated to lock another type of screw.

[0037] Step 6: Repeat step 5 to fasten three to twelve different screws onto the product.

[0038] Finally, it should be pointed out that the above embodiments are only representative examples of the present invention. Obviously, the present invention is not limited to the above embodiments, and there are many variations. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention should be considered to belong to the protection scope of the present invention.

Claims

1. An automatic switching electric screwdriver bit device, comprising a device support (101), a driving device (102) and a rotary gas circuit (103), characterized in that: An electric screwdriver assembly (15) is disposed on the outer side of the left end of the equipment bracket (101), and an electric screwdriver mating head (9) is disposed on the lower end of the electric screwdriver assembly (15); The driving device (102) is arranged outside the right end of the equipment bracket (101), and a nozzle assembly (11) is installed on the driving device (102); A vacuum generator (14) is disposed at the top of the equipment support (101); a filter (16) is disposed between the vacuum generator (14) and the rotating air path (103); the vacuum generator (14) is connected to the filter (16) via a sealed air pipe; and the lower end of the filter (16) is connected to the nozzle assembly (11) via the rotating air path (103); The nozzle assembly (11) comprises a nozzle (20), a rod mounting plate (4), a linear guide rail (12), a rod stopper (7), a rod engagement head (8) and a rod (10); the rod mounting plate (4) is mounted on the lower end of a middle reducer connecting plate (3) in a driving device (102); the number of the rod mounting plates (4) is 3 to 12; the upper end of the rod mounting plate (4) is provided with a linear guide rail (12) and a rod stopper (7); the nozzle (20) is mounted on the upper end of the linear guide rail (12); the rod (10) is mounted on the lower end of the rod engagement head (8); the bottom of the rod (10) is connected to the top of the nozzle (20); a compression spring (6) is sleeved on the rod (10); and a tension spring (5) is provided between the middle reducer connecting plate (3) in the driving device (102) and the nozzle assembly (11); The back surfaces of the plurality of batch rod mounting plates (4) are all connected to a bearing plate, and the rotating air path (103) is arranged on the bearing plate; The driving device (102) comprises a servo motor (1), a hollow reducer (2) and a reducer connecting plate (3), wherein the hollow reducer (2) is fixedly mounted on the equipment bracket (101), the servo motor (1) is mounted on the upper end of the hollow reducer (2), and the reducer connecting plate (3) is fixedly mounted on the lower end of the hollow reducer (2); The rotary gas circuit (103) comprises a multi-way rotary joint (13), a nozzle assembly gas nozzle (17), a multi-way rotary joint fixed end gas nozzle (18) and a multi-way rotary joint movable end gas nozzle (19), wherein the multi-way rotary joint fixed end gas nozzle (18) and the multi-way rotary joint movable end gas nozzle (19) are both mounted on the multi-way rotary joint (13), the filter (16) is connected to the multi-way rotary joint movable end gas nozzle (19) via an air pipe, the outer side of the multi-way rotary joint fixed end gas nozzle (18) is connected to the nozzle assembly gas nozzle (17) via an air pipe, and the nozzle assembly gas nozzle (17) is connected to the nozzle assembly (11) and communicates with each other.

2. The automatic switching electric screwdriver bit device according to claim 1, characterized in that: The batch rod limit block (7) is provided with a protruding positioning pin, and the batch rod mating head (8) is provided with a hole, and the positioning pin and the hole on the batch rod mating head (8) match each other in type.

3. The automatic switching electric screwdriver bit device according to claim 1, characterized in that: The opposite ends of the screwdriver rod engagement head (8) and the electric screwdriver engagement head (9) are respectively provided with matching cross protrusions.

4. The automatic switching electric screwdriver bit device according to claim 1, characterized in that: The vacuum generator (14) is mounted on the equipment bracket (101), and the number of the electric screwdriver assembly (15) is one and is located directly above the working area.

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