A multi-station screw locking machine

Abstract

The present invention relates to a multi-station screw locking machine, comprising: a rotation driving device, a transmission box, a screwdriver bit rotor, a vacuum adsorption component, a suction pipe, a screwdriver bit assembly, a pressing component, a lifting driving component and an electric screwdriver, wherein the rotation driving device is connected to the transmission box, the screwdriver bit rotor is arranged on the transmission box, the screwdriver bit rotor is sleeved on the vacuum adsorption component, a plurality of suction pipes are arranged on the screwdriver bit rotor, each of the suction pipes is provided with a screwdriver bit assembly, the vacuum adsorption component is connected to the suction pipe, and the lifting driving component is connected to the electric screwdriver. The multi-station screw locking machine provided by the present invention can absorb multiple identical or different screws at the same time, and completes the locking of each screw as the screwdriver bit rotor rotates. Compared with the traditional single-suction head electric screw machine, it has high efficiency and can detect whether the screw is absorbed, thereby preventing the occurrence of empty locking.

Description

Technical Field

[0001] The invention relates to the field of electric tools, and in particular to a multi-station screw locking machine. Background Art

[0002] With the development and progress of electronics, various electronic products are constantly updated. Due to the simple processing, low cost and commonality of screws, they have become an indispensable connecting component in most electronic products. In the entire process from screw processing to screw assembly, the tapping process has become an indispensable step in the entire processing and assembly process. In order to complete this tapping process, various screw locking machines have appeared on the market. Most of the screw locking machines have two types of screw locking methods: three-way feeding locking and suction head suction locking. The suction head adsorption locking method is: the screw is sent from a vibrating plate or other feeder through a conveying device to the vicinity of the screw locking suction head for retention, or the feeder is directly set near the screw locking suction head, and the screw is sucked to the screw locking position by the suction head for locking.

[0003] However, the existing suction head locking device only has one electric screwdriver, which can only lock one screw at a time, and needs to constantly go back and forth between the screw feeding station and the screw locking station, which is very inefficient. Summary of the invention

[0004] In order to solve the problem of low working efficiency of existing electric screw locking machines, the technical solution adopted by the present invention is: a multi-station screw locking machine, comprising: a rotation driving device, a transmission box, a bit rotor, a vacuum adsorption component, a suction pipe, a bit assembly, a pressing component, a lifting driving component and an electric screwdriver, the rotation driving device is connected to the transmission box, the bit rotor is arranged on the transmission box, the bit rotor is sleeved on the vacuum adsorption component, a plurality of suction pipes are arranged on the bit rotor, each of the suction pipes is provided with a bit assembly, the vacuum adsorption component is connected to the suction pipe, the pressing component is arranged above the suction pipe for pressing down the suction pipe, the lifting driving component is connected to the electric screwdriver, and the electric screwdriver is used to drive the bit assembly to extend out of the suction pipe and rotate.

[0005] A further improvement is that the vacuum adsorption component includes an exhaust shaft, a first air duct corresponding one-to-one to the suction tube is provided in the exhaust shaft, and air guide grooves corresponding one-to-one to the first air duct are provided on the cylindrical surface of the exhaust shaft, and each of the air guide grooves is connected to the first air duct through a first air hole leading to the exhaust shaft.

[0006] As a further improvement, the suction pipe comprises a hollow tube body, and a plurality of second air holes are circumferentially arranged at the same height of the hollow tube body.

[0007] A further improvement is that a plurality of through-hole stations are provided on the bit rotor, the suction pipe is arranged in the through-hole station, a plurality of second air passages are provided in the bit rotor, and each of the through-hole stations is connected to one of the air guide grooves via one of the second air passages.

[0008] A further improvement is that the opening width of the through-hole station-side end of the second air channel is greater than the distance between two of the second air holes.

[0009] A further improvement is that the bit assembly includes an upper bit, a rod body and a lower bit connected in sequence, and the upper bit is exposed at the top of the suction pipe.

[0010] A further improvement is that a first spring is disposed outside the rod body, one end of the first spring is disposed on the suction pipe, and the other end is disposed on the rod body.

[0011] A further improvement is that the lifting drive assembly includes a lifting drive device and a fixing plate, the fixing plate is used to fix the electric screwdriver, and the output end of the lifting drive device is connected to the fixing plate.

[0012] A further improvement is that the output end of the lifting drive device is connected to the height adaptive component, and the fixing plate is arranged on the height adaptive component.

[0013] A further improvement is that the height adaptive component includes a top plate, a bottom plate, a guide rod and a third spring, the output end of the lifting drive device is connected to the bottom plate, a guide rod is provided between the top plate and the bottom plate, the fixed plate is arranged on the guide rod, and the third spring is sleeved on the guide rod between the fixed plate and the top plate.

[0014] The beneficial effects of the present invention are:

[0015] The multi-station screw locking machine provided by the present invention can simultaneously absorb multiple identical or different screws through the rotation of the bit rotor, and completes the locking of each screw as the bit rotor rotates. Compared with the traditional single-suction head electric screw machine, the efficiency is greatly improved, and it can detect whether the screw is absorbed, thereby preventing the occurrence of empty locking. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 It is a structural schematic diagram of the multi-station screw locking machine of the present invention;

[0018] Figure 2 It is a structural schematic diagram of the multi-station screw locking machine of the present invention;

[0019] Figure 3It is a schematic diagram of the structure of the vacuum adsorption assembly of the present invention;

[0020] Figure 4 It is a schematic diagram of the structure of the suction pipe of the present invention;

[0021] Figure 5 It is a schematic diagram of the screwdriver bit rotor structure of the present invention;

[0022] Figure 6 is a schematic diagram of the second airway structure of the present invention;

[0023] Figure 7 is a schematic diagram of the second airway structure of the present invention;

[0024] Figure 8 It is a schematic diagram of the structure of a screwdriver bit assembly of the present invention;

[0025] Fig. 9 It is a schematic diagram of the top view of the structure of the multi-station screw locking machine of the present invention. DETAILED DESCRIPTION

[0026] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0027] In the description of the invention, it is necessary to understand that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] In the invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to the specific circumstances.

[0030] like Figure 1 and Figure 2 As shown ( Figure 2 In order to show the position of the pressing component 7, some parts are hidden). The present invention provides a multi-station screw locking machine, including: a rotation drive device 1, a transmission box 2, a screwdriver bit rotor 3, a vacuum adsorption component 4, a suction pipe 5, a screwdriver bit component 6, a pressing component 7, a lifting drive component 8 and an electric screwdriver 9. The rotation drive device 1 is installed on the transmission box 2 through a motor seat 11. The output end of the rotation drive device 1 is connected to the gear in the transmission box 2 through a synchronous wheel, a synchronous belt, a chain or a gear. The screwdriver bit rotor 3 is rotatably installed on the transmission box 2 through a bearing. At the same time, a gear is provided on the outer periphery of the screwdriver bit rotor 3. Through the gear, the gear screwdriver bit rotor 3 in the transmission box 2 rotates to realize the switching of different suction pipes 5. The screwdriver bit rotor 3 It is sleeved on the vacuum adsorption component 4, and the rotation driving device 1 drives the bit rotor 3 to rotate through the transmission box 3, while the vacuum adsorption component 4 is installed on the motor base through the fixing plate 41 and does not rotate. The bit rotor 3 is annular, and multiple suction pipes 5 are evenly installed on the bit rotor 3. Each suction pipe 5 is equipped with a bit component 6. The vacuum adsorption component 4 is connected to the vacuum pumping equipment through the corresponding pipeline, and the vacuum adsorption component 4 is connected to the suction pipe 5 to provide suction for sucking screws. The pressing component 7 is arranged above the suction pipe 5 to press down the suction pipe 5. The lifting drive component 8 is connected to the electric screwdriver 9, and the electric screwdriver 9 is used to drive the bit component 6 to extend out of the suction pipe 5 and rotate. When the screw locking machine is working, the rotating driving device 1 drives the screw bit rotor 3 to rotate through the transmission box 2, and a certain suction tube 5 is aligned with the pressing component 7, and then the pressing component connects the suction tube 5 to the screw bit component 6 in the suction tube 5 and presses down. At the same time, the vacuum adsorption component 4 provides suction to the suction tube 5. A pressure detection device is arranged on the corresponding pipeline of the vacuum adsorption component 4. When the suction tube 5 sucks the screw, the pressure detection device detects the pressure change in the pipeline, and then determines that the screw has been sucked. When the pipeline has no pressure and has not changed, it means that the suction tube 5 has not sucked the screw. The screw locking machine will not proceed to the next step until it detects that the screw has been sucked. Therefore, the occurrence of empty locking caused by failure to suck the screw is avoided, and the missing of the fixing screws of the corresponding product is avoided.

[0031] The multi-station screw locking machine provided by the present invention can simultaneously absorb multiple identical or different screws through the rotation of the bit rotor, and completes the locking of each screw as the bit rotor rotates. Compared with the traditional single-suction head electric screw machine, the efficiency is greatly improved, and it can detect whether the screw is absorbed, thereby preventing the occurrence of empty locking.

[0032] like Figure 3 As shown, the vacuum adsorption assembly 4 includes an air extraction shaft 41, and a first air channel 42 corresponding to the suction pipe 5 is provided in the air extraction shaft 41, and the top of the first air channel 42 is connected to the vacuum extraction device through a pipeline, and an air guide groove 43 corresponding to the first air channel 42 is provided on the cylindrical surface of the air extraction shaft 41, and each of the air guide grooves 43 is connected to the first air channel 42 through a first air hole 44 leading to the air extraction shaft 41. At the same time, a chuck 45 for clamping the suction pipe 5 is provided on the upper and bottom parts of the air extraction shaft 41, and each chuck 45 is mounted on the air extraction shaft 41 through a bearing sleeve. In the process of the rotation of the bit rotor of the screw locking machine, each first air channel 42 is always connected and corresponding to a fixed suction pipe 5.

[0033] like Figure 4 As shown, a further improvement is that the suction pipe 5 includes a hollow tube body 51 , and a plurality of second air holes 52 are circumferentially arranged at the same height of the hollow tube body 51 .

[0034] like Figures 5 to 7 As shown, the further improvement is that a gear is provided on the outer wall of the screwdriver rotor 3 to connect with the transmission mechanism in the transmission box 2, a plurality of through-hole stations 31 are provided in the screwdriver rotor 3, the suction pipe 5 is arranged in the through-hole station 31, a plurality of second air passages 32 are provided in the screwdriver rotor 3, and each through-hole station 31 is connected to a gas guide groove 43 through a second air passage 32. The second air passage 32 includes an end opening 323 which is connected to the through-hole station 31 at the top and is aligned with the second air hole 52, and the end opening 323 is connected to an air hole 322 passing through the screwdriver rotor 3 through the air guide channel 321 and leads to a certain air guide groove 43.

[0035] As a further improvement, the width of the opening 323 on the side end of the through hole station 31 of the second air channel 32 is greater than the distance between the two second air holes 52, so that when the suction tube 5 rotates, the connection relationship between the inner cavity of the suction tube 5 and the second air channel 32 will not be interrupted, so that it can continue to adsorb.

[0036] like Figure 8 As shown, it is further improved that the bit assembly 6 includes an upper bit 61 , a rod body 62 and a lower bit 63 which are connected in sequence, and the upper bit 61 is exposed at the top of the suction pipe 5 .

[0037] A further improvement is that a first spring 64 is disposed outside the rod body 62, one end of the first spring 64 is disposed on the suction pipe 5, and the other end is disposed on the rod body 62. When the lifting drive assembly drives the electric screwdriver to descend, the lower end of the screwdriver head assembly 6 extends out of the suction pipe 5, and then under the drive of the electric screwdriver, the screwdriver head assembly 6 rotates to tighten the screw. When the electric screwdriver is lifted, under the action of the first spring 64, the screwdriver head assembly 6 retracts into the suction pipe 5 to prepare for the next screw suction.

[0038] like Figure 1 As shown, it is further improved that the lifting drive assembly 8 includes a lifting drive device 81 and a fixing plate 82 , the fixing plate 82 is used to fix the electric screwdriver 9 , and the output end of the lifting drive device 81 is connected to the fixing plate 82 .

[0039] Since the lengths of various screws are different, in order to adapt to screws of different lengths, the technical solution is further improved as follows: the output end of the lifting drive device 81 is connected to the height adaptive component 10, and the fixing plate 82 is arranged on the height adaptive component 10. Through the height adaptive component 10, the electric screwdriver can adapt to tightening screws of different lengths, and can ensure that screws of different lengths have sufficient downward pressure without the phenomenon of screws jumping out or the screwdriver head component slipping. The lifting drive device 81 can be a cylinder.

[0040] Further improvement is that the height adaptive component 10 includes a top plate 101, a bottom plate 102, a guide rod 103 and a third spring 104, the output end of the lifting drive device 81 is connected to the bottom plate 102, a guide rod 103 is provided between the top plate 101 and the bottom plate 102, the fixed plate 82 is provided on the guide rod 103, and the third spring 104 is sleeved on the guide rod 103 between the fixed plate 82 and the top plate 101. There are at least three guide rods 103 to ensure that the fixed plate 82 does not deflect, so that the electric screwdriver cannot be aligned with the upper screwdriver head 61 when it descends.

[0041] like Fig. 9 As shown ( Fig. 9 In order to facilitate observation of the position of the indexing sensor, some structures that block observation are hidden), and further improved as follows: a indexing sensor 12 is provided next to the bit rotor 3 to control the rotation angle of the bit rotor 3.

[0042] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A multi-station screw locking machine, characterized in that: include: A rotation drive device, a transmission box, a screwdriver bit rotor, a vacuum adsorption component, a suction pipe, a screwdriver bit assembly, a pressing component, a lifting drive component and an electric screwdriver, wherein the rotation drive device is connected to the transmission box, the screwdriver bit rotor is arranged on the transmission box, the screwdriver bit rotor is sleeved on the vacuum adsorption component, a plurality of suction pipes are arranged on the screwdriver bit rotor, each suction pipe is provided with a screwdriver bit assembly, the vacuum adsorption component is communicated with the suction pipe, the pressing component is arranged above the suction pipe for pressing down the suction pipe, the lifting drive component is connected to the electric screwdriver, and the electric screwdriver is used to drive the screwdriver bit assembly to extend out of the suction pipe and rotate; The vacuum adsorption assembly comprises an air suction shaft, wherein the air suction shaft is provided with a first air passage corresponding to the suction pipe one by one, and the cylindrical surface of the air suction shaft is provided with an air guide groove corresponding to the first air passage one by one, and each of the air guide grooves is connected to the first air passage through a first air hole leading to the air suction shaft; The suction pipe comprises a hollow tube body, and a plurality of second air holes are circumferentially arranged at the same height of the hollow tube body; The screwdriver rotor is provided with a plurality of through-hole stations, the suction pipe is arranged in the through-hole stations, a plurality of second air passages are arranged in the screwdriver rotor, and each of the through-hole stations is connected to one of the air guide grooves through one of the second air passages; The lifting drive assembly includes a lifting drive device and a fixing plate, wherein the fixing plate is used to fix the electric screwdriver, and the output end of the lifting drive device is connected to the fixing plate.

2. The multi-station screw locking machine according to claim 1, characterized in that: The opening width of the end portion of the second air channel on the through hole station side is greater than the distance between two of the second air holes.

3. The multi-station screw locking machine according to claim 1, characterized in that: The bit assembly comprises an upper bit, a rod body and a lower bit which are connected in sequence, and the upper bit is exposed at the top end of the suction pipe.

4. The multi-station screw locking machine according to claim 3, characterized in that: A first spring is disposed outside the rod body, one end of the first spring is disposed on the suction pipe, and the other end of the first spring is disposed on the rod body.

5. The multi-station screw locking machine according to claim 1, characterized in that: The output end of the lifting drive device is connected to the height adaptive component, and the fixing plate is arranged on the height adaptive component.

6. The multi-station screw locking machine according to claim 5, characterized in that: The highly adaptive component includes a top plate, a bottom plate, a guide rod and a third spring. The output end of the lifting drive device is connected to the bottom plate. A guide rod is provided between the top plate and the bottom plate. The fixed plate is arranged on the guide rod, and the third spring is sleeved on the guide rod between the fixed plate and the top plate.

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