Automatic screwing device for nuts and screws of lamps

Abstract

The invention discloses an automatic screwing device for lamp nuts and screws, which comprises a device main body, a horizontal countertop is arranged in the device main body, a sliding rail in the Y-axis direction is arranged on the countertop, a movable plate with the moving freedom degree in the Z-axis direction is further arranged above the countertop, and a main air cylinder for driving the movable plate to move is arranged on the device main body; the nut and screw screwing mechanism is arranged in the sliding rail and is used for screwing a nut and a screw of the lamp placed on the nut and screw screwing mechanism; the pressing mechanism is arranged in the nut and screw screwing mechanism, is driven by the movable plate and is used for pressing the lamp on the nut and screw screwing mechanism, and the upper length of the pressing mechanism can be adjusted; the display screen is arranged on the device body and used for displaying the product quality in the screwing process of the nuts and the screws; the electric appliance cabinet is arranged in the device main body and is used for installing an electric circuit board wire in the screwing device; and the start-stop button is arranged on the device main body and is used for controlling the operation / stop of the automatic screwing device.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive lamps, and particularly relates to an automatic screwing device for lamp nuts and screws. Background Art

[0002] The current automotive industry is developing rapidly. At present, during the production process of automotive lamps, most of the adjusting nuts and mounting screws on the lamp housing rely on operators for manual locking. However, manually locking nuts and screws of different specifications and models requires multiple workstations and multiple operators. This not only has the problems of high labor intensity and low production efficiency, but also it is difficult to uniformly control the screwing depth of nuts and screws in the manual locking method, easily causing problems such as incomplete screwing and missing installation, thus affecting product quality. Summary of the Invention

[0003] The purpose of the present invention is: aiming at the problems existing in the current method of manually locking nuts and screws, an automatic screwing device for lamp nuts and screws is designed. It solves the problems of requiring multiple workstations and multiple operators in manually locking nuts and screws. This automatic screwing device can control the screwing depth of nuts and screws, prevent problems such as incomplete screwing and missing installation, improve product quality, and at the same time can also greatly improve the operation efficiency.

[0004] To achieve the above purpose, the present invention is implemented through the following technical solutions:

[0005] The present invention designs an automatic screwing device for lamp nuts and screws, and this screwing device includes the following structural settings:

[0006] A device main body, which has a horizontal table board inside. A slide rail in the Y-axis direction is arranged on the table board. An activity board with a moving degree of freedom in the Z-axis direction is also arranged above the table board. A main cylinder for driving the activity board to move in the Z-axis direction is also arranged on the device main body;

[0007] A nut and screw screwing mechanism, which is arranged in the slide rail and has a moving degree of freedom in the Y-axis direction. The nut and screw screwing mechanism is used for automatically screwing nuts and screws on the lamps placed thereon. The nut and screw screwing mechanism includes at least one nut screwing unit for automatically screwing nuts and at least one screw screwing unit for automatically screwing screws;

[0008] A pressing mechanism, which is arranged in the nut and screw screwing mechanism and moves in the Z-axis direction by the drive of the activity board to press the lamp onto the nut and screw screwing mechanism. The pressing mechanism also has a degree of freedom for adjusting the length in the Z-axis direction;

[0009] A display screen, which is arranged on the device main body and is used to display the product quality during the screwing process of nuts and screws;

[0010] An electric cabinet, which is arranged in the device main body and is used to install the electrical circuit board wiring in this automatic screwing device;

[0011] And a start / stop button, which is arranged on the device main body and is used to control the operation / stop of this automatic screwing device.

[0012] Furthermore, an automatic screwing device for lamp nuts and screws: A plurality of guide shafts extending in the Z-axis direction are arranged in the device main body, and the movable plate is slidably arranged on the guide shafts and is driven by the main cylinder.

[0013] Even further, an automatic screwing device for lamp nuts and screws: A plurality of linear bushings are fixedly arranged on the movable plate, and the movable plate is slidably arranged on the guide shafts through the linear bushings.

[0014] Furthermore, an automatic screwing device for lamp nuts and screws: The nut and screw screwing mechanism includes the following structural settings:

[0015] A bottom plate, which is arranged in the slide rail and has a degree of freedom of movement in the Y-axis direction. A plurality of lower guide posts extending in the Z-axis direction are arranged on it, and a plurality of first installation cavities and second installation cavities arranged in the X-axis direction are also arranged on the bottom plate;

[0016] At least one set of nut screwing units, which are installed in the first installation cavity and have a degree of freedom of movement in the Z-axis direction. The nut screwing units are used to screw nuts onto the lamp;

[0017] At least one set of screw screwing units, which are installed in the second installation cavity and have a degree of freedom of movement in the Z-axis direction. The screw screwing units are used to screw screws onto the lamp;

[0018] A plurality of limit blocks, which are arranged on the bottom plate. The limit blocks are used to place the lamp and limit it;

[0019] A top plate, on which a plurality of upper guide posts extending in the Z-axis direction are arranged. The upper guide posts pass through the lower guide posts, and the top plate is also connected to the movable plate and is driven by it to move in the Z-axis direction;

[0020] And a plurality of laser sensors, which are used to respectively detect whether there are nuts and screws in the nut screwing units and screw screwing units. Specifically, the presence or absence of nuts and screws is detected by the laser sensors to avoid idle screwing during the operation of this device.

[0021] Further, a device for automatically screwing nuts and screws onto a lamp: The nut and screw screwing mechanism further includes a first mounting plate and a second mounting plate; the first mounting plate is disposed on the bottom plate through a plurality of first support rods extending in the Z-axis direction, and first cavities and second cavities for accommodating a nut screwing unit and a screw screwing unit are respectively disposed on the first mounting plate corresponding to the positions of the first mounting cavity and the second mounting cavity; the second mounting plate is disposed on the first mounting plate through a plurality of second support rods in the Z-axis direction and the second mounting plate is only disposed corresponding to the position of the second cavity (in this way, a stepped structure can be formed with the first mounting plate), and a third cavity for accommodating the screw screwing unit is further disposed on the second mounting plate; a plurality of limit blocks are respectively disposed on the first mounting plate and the second mounting plate.

[0022] Further, a device for automatically screwing nuts and screws onto a lamp: The nut and screw screwing mechanism further includes a plurality of light spot sensors disposed on the top plate, which are used to detect whether the lamp is placed on the limit block to prevent the automatic screwing device from operating in a no-load state.

[0023] Further, a device for automatically screwing nuts and screws onto a lamp: Two sets of nut screwing units and two sets of screw screwing units are symmetrically disposed about the Y-axis in the nut and screw screwing mechanism. Specifically, the nut and screw screwing mechanism includes a nut screwing unit - screw screwing unit - screw screwing unit - nut screwing unit arranged in sequence along the X-axis direction.

[0024] Further, a device for automatically screwing nuts and screws onto a lamp: The nut screwing unit includes the following structural settings:

[0025] A linear guide rail, which is installed in the first mounting cavity along the Z-axis direction;

[0026] A servo motor, which is slidably disposed on the linear guide rail;

[0027] A bearing seat, which is disposed on the bottom plate, and a bearing is further disposed on the bearing seat;

[0028] A first sliding table cylinder, which is disposed on the bottom plate and is used to drive the servo motor to move in the Z-axis direction;

[0029] A nut locking head, which is used to automatically screw the nut onto the lamp. The nut locking head slidably penetrates through the bearing along the Z-axis direction and is connected to the output end of the servo motor. Specifically, the nut locking head is in sliding contact with the inner ring of the bearing and can move up and down along the Z-axis direction under the drive of the first sliding table cylinder;

[0030] And a first displacement sensor, which is arranged on the bottom plate and used to detect whether the nut locking head moves into place to ensure that the nut thereon can be screwed onto the lamp.

[0031] Furthermore, an automatic screwing device for lamp nuts and screws: The screw screwing unit includes the following structural settings:

[0032] A second sliding table cylinder, which is arranged in the second installation cavity;

[0033] A hoop seat, which is arranged on the second sliding table cylinder and driven by it;

[0034] An electric screwdriver, which is arranged on the hoop seat and driven by the second sliding table cylinder to move in the Z-axis direction;

[0035] A screw locking head, which is arranged at the output end of the electric screwdriver and used to automatically screw the screw onto the lamp;

[0036] And a second displacement sensor, which is arranged on the bottom plate and used to detect whether the screw locking head is in place to ensure that the screw thereon can be screwed onto the lamp.

[0037] Furthermore, an automatic screwing device for lamp nuts and screws: The pressing mechanism includes the following structural settings:

[0038] An adjusting seat, which is fixedly arranged on the top plate;

[0039] And an adjusting column, which is arranged along the Z-axis direction, one end of which is threadedly connected to the adjusting seat, and the adjusting column is used to press the lamp placed on the limiting block.

[0040] Advantages of the present invention:

[0041] The automatic screwing device for lamp nuts and screws designed by the present invention is used for the automatic screwing and assembling of adjusting nuts and loading screws on the lamp housing, which solves the problem of multi-station and multi-person operation when manually locking nuts and screws of different specifications and models; the automatic screwing device of the present invention can not only control the screwing depth of nuts and screws, prevent incomplete screwing and missing installation, and improve the product quality; at the same time, it can also reduce the labor intensity of employees, change from manual locking to automatic locking, and the locking of nuts and screws is integrated from the original two stations and multi-person operation to synchronous operation on one device, greatly reducing the production cost, improving the operation rhythm, and thus improving the operation efficiency.

[0042] The automatic screwing device for lamp nuts and screws designed by the present invention can be popularized and applied in lamp products, promoting the development direction of digitalization and intelligentization, improving the technical strength of enterprises, and ensuring product quality. Brief Description of the Drawings

[0043] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0044] Figure 1 Structural schematic diagram of an automatic screwing device for lamp nuts and screws designed for Embodiment 1 of the present invention;

[0045] Figure 2 Structural schematic diagram of the device main body in Embodiment 1 of the present invention;

[0046] Figure 3 Assembly schematic diagram of the nut and screw screwing mechanism and the pressing mechanism in Embodiment 1 of the present invention;

[0047] Figures 4 - 5 Structural schematic diagram of the nut and screw screwing mechanism in Embodiment 1 of the present invention.

[0048] The markings in the figure are as follows:

[0049] 1 - Device main body, 2 - Nut and screw screwing mechanism, 3 - Pressing mechanism, 4 - Display screen, 5 - Electrical cabinet, 6 - Start / stop button, 7 - Lamp, 11 - Table top panel, 12 - Slide rail, 13 - Movable plate, 14 - Main cylinder, 15 - Guide shaft, 16 - Linear guide sleeve, 21 - Base plate, 22 - Nut screwing unit, 23 - Screw screwing unit, 24 - Limit block, 25 - Top plate, 26 - Laser sensor, 27 - First mounting plate, 28 - Second mounting plate, 29 - Spot sensor, 31 - Adjusting seat, 32 - Adjusting column, 211 - Lower guide column, 212 - First mounting cavity, 213 - Second mounting cavity, 221 - Linear guide rail, 222 - Servo motor, 223 - Bearing seat, 224 - Bearing, 225 - First sliding table cylinder, 226 - Nut locking head, 227 - First displacement sensor, 231 - Second sliding table cylinder, 232 - Clamp seat, 233 - Electric screwdriver, 234 - Screw locking head, 235 - Second displacement sensor, 251 - Upper guide column, 271 - First support rod, 272 - First cavity, 273 - Second cavity, 281 - Second support rod, 282 - Third cavity. Detailed Embodiments

[0050] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present invention or its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0051] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "top", "bottom", etc. is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. Moreover, the terms "first", "second", etc. are used to distinguish similar objects and do not have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein.

[0052] Embodiment 1

[0053] As Figures 1 - 5 shown, in this Embodiment 1, a device for automatically screwing nuts and screws of a lamp is designed. The screwing device includes the following structural settings:

[0054] The device main body 1 has a horizontal table board 11 in the X-axis direction inside. A slide rail 12 in the Y-axis direction is provided on the table board 11. Four guide shafts 15 extending in the Z-axis direction are also provided on the table board 11. Four linear guide sleeves 16 are fixedly provided on the movable plate 13. The movable plate 13 is slidably arranged on the guide shafts 15 through the linear guide sleeves 16. A main cylinder 14 for driving the movable plate 13 to slide along the Z-axis direction on the guide shafts 15 is also provided on the device main body 1.

[0055] The nut and screw screwing mechanism 2 is arranged in the slide rail 12 and has a moving degree of freedom in the Y-axis direction. It is used for automatically screwing nuts and screws of the lamp 7 placed thereon. Two sets of nut screwing units 22 and two sets of screw screwing units 23 are symmetrically arranged about the Y-axis in the nut and screw screwing mechanism 2.

[0056] The pressing mechanism 3 is arranged in the nut-screw screwing mechanism 2 and moves in the Z-axis direction driven by the movable plate 13 to press the lamp 7 placed on the nut-screw screwing mechanism 2. The pressing mechanism 3 also has the freedom of adjusting the length in the Z-axis direction;

[0057] The display screen 4 is arranged on the device main body 1 and is used to display the product quality during the nut-screw screwing process;

[0058] The electrical cabinet 5 is arranged in the device main body 1 and is used to install the electrical circuit board wiring in the automatic screwing device;

[0059] And the start-stop button 6 is arranged on the device main body 1 and is used to control the operation / stop of the automatic screwing device;

[0060] Specifically, as Figures 3 - 5 shown, the above-mentioned nut-screw screwing mechanism 2 includes the following specific structural settings:

[0061] The bottom plate 21 is arranged in the slide rail 12 and can be adjusted in position along the Y-axis direction. Four lower guide posts 211 extending in the Z-axis direction are arranged on the bottom plate 21, and a first installation cavity 212, a second installation cavity 213, a second installation cavity 213, and a first installation cavity 212 arranged in the X-axis direction are sequentially arranged thereon, as Figure 3 shown;

[0062] The first installation plate 27 is arranged on the bottom plate 21 through four first support rods 271 extending in the Z-axis direction. First cavities 272 and second cavities 273 for accommodating the nut screwing unit 22 and the screw screwing unit 23 are respectively arranged on the first installation plate 27 corresponding to the positions of the first installation cavity 212 and the second installation cavity 213, as Figures 4 - 5 shown;

[0063] The second installation plate 28 is arranged on the first installation plate 27 through four second support rods 281 in the Z-axis direction and the second installation plate 28 is only arranged corresponding to the position of the second cavity 273. In this way, the second installation plate 28 can form a stepped structure with the first installation plate 27 (as Figures 3 - 4 ), and a third cavity 282 for accommodating the screw screwing unit 23 is also arranged on the second installation plate 28, as Figure 4 shown;

[0064] Two sets of nut screwing units 22, which are respectively installed in two first installation cavities 212 and have a degree of freedom of movement in the Z-axis direction. The nut screwing unit 22 includes: a linear guide 221, a servo motor 222, a bearing block 223, a bearing 224, a first slide cylinder 225, a nut locking head 226, and a first displacement sensor 227. The linear guide 221 is installed in the first installation cavity 212 along the Z-axis direction. The servo motor 222 is slidably arranged on the linear guide 221. The bearing block 223 is arranged on the bottom plate 21. The bearing 224 is arranged on the bearing block 223. The first slide cylinder 225 is arranged on the bottom plate 21 and is used to drive the servo motor 222 to move along the Z-axis direction on the linear guide 221. The nut locking head 226 slidably penetrates through the inner ring of the bearing 224 along the Z-axis direction and is connected to the output end of the servo motor 222. The nut locking head 226 is used to automatically screw the nut onto the lamp 7. The first displacement sensor 227 is arranged on the bottom plate 21 and is used to detect the position of the nut locking head 226 in place to ensure that the nut on it can be screwed onto the lamp 7;

[0065] Two sets of screw screwing units 23, which are respectively installed in two second installation cavities 213 and have a degree of freedom of movement in the Z-axis direction. The screw screwing unit 23 includes: a second slide cylinder 231, a hoop seat 232, an electric screwdriver 233, a screw locking head 234, and a second displacement sensor 235. The second slide cylinder 231 is arranged in the second installation cavity 213. The hoop seat 232 is arranged on the second slide cylinder 231 and is driven by it. The electric screwdriver 233 is arranged on the hoop seat 232 and is driven by the second slide cylinder 231 to move in the Z-axis direction. The screw locking head 234 is arranged at the output end of the electric screwdriver 233 and is used to automatically screw the screw onto the lamp 7. The second displacement sensor 235 is arranged on the bottom plate 21 and is used to detect the position of the screw locking head 234 in place to ensure that the screw on it can be screwed onto the lamp 7;

[0066] Several limit blocks 24, which are respectively arranged on the first mounting plate 27 and the second mounting plate 28 and are used to place the lamp 7 and limit it;

[0067] The top plate 25 is provided with four upper guide posts 251 extending in the Z-axis direction. The upper guide posts 251 penetrate through the lower guide posts 211 one by one. The top plate 25 is connected to the movable plate 13 and is driven by it to move in the Z-axis direction. A light spot sensor 29 is also arranged on the top plate 25, which is used to detect whether the lamp 7 is placed on the limit block 24 to prevent the automatic screwing device from operating in a no-load state;

[0068] And several laser sensors 26, which are used to respectively detect whether there are nuts and screws in the nut screwing unit 22 and the screw screwing unit 23;

[0069] Specifically, as Figure 3 shown, the pressing mechanism 3 includes an adjusting seat 31 and an adjusting column 32. The adjusting seat 31 is fixedly arranged on the top plate 25, and the adjusting column 32 is arranged along the Z-axis direction. One end of the adjusting column 32 is threadedly connected to the adjusting seat 31, and the other end extends downward toward the lamp 7. The adjusting column 32 is used to press the lamp 7 placed on the limiting block 24.

[0070] It can be understood that two Figure 4 such structures can be spliced to form the complete nut-screw screwing mechanism 2 in Embodiment 1.

[0071] During the process of locking (screwing) nuts and screws using the automatic nut and screw screwing device of Embodiment 1 above:

[0072] First, the operator takes the lamp 7 product and places it in the limiting block 24. The profiling limiting block 24 can position the lamp 7.

[0073] Then, the adjusting nut and the mounting screw to be screwed on the lamp 7 are respectively placed in the nut locking head 226 and the screw locking head 234. The start-stop button 6 on the device main body 1 is pressed, and the electrical program starts the operation of this automatic screwing device. The main cylinder 14 drives the movable plate 13 to perform the up-and-down die closing operation. Driven by the main cylinder 14, the up-and-down die closing operation can achieve balance and perpendicularity under the action of the guide shaft 15, ensuring the stability of the pressing operation of the pressing mechanism 3 on the lamp 7. The electrical cabinet 5 is independently arranged below the device main body 1, and the wiring of the industrial computer circuit board is installed in the electrical cabinet 5 to ensure the safety of the equipment. After the electrical program is started, the light spot sensor 29 detects whether the lamp 7 product is placed on the limiting block 24 to prevent the equipment from operating in a no-load state and giving an alarm. Among them, the adjusting column 32 can adjust and control its length in the Z-axis direction through threaded connection. After adjusting to an appropriate length, it can press the lamp 7 product after die closing, preventing the lamp 7 from moving during the nut and screw screwing and locking process, and performing secondary precise positioning. The role of the slide rail 12 is to facilitate quickly adjusting the nut-screw screwing mechanism 2 to a suitable position. This device improves the intelligent operation, is simple, efficient, convenient, time-saving and labor-saving, and has a high working efficiency. The display screen 4 allows the operator to visually see whether the quality of the lamp product is OK or NG during the operation implementation process, ensuring that each lamp product is qualified and meets the process requirements. The structure of this automatic screwing device in Embodiment 1 is simple and clear, and has strong practicability. This device is simple to operate and use, reducing the workload of the operator.

[0074] The laser sensor 26 can respectively detect whether there are parts on the adjusting nut on the nut locking head 226 and the mounting screw on the screw locking head 234, avoiding no-load screwing during operation. The servo motor 222 is configured with a speed reducer to drive the nut locking head 226 under the pushing action of the first sliding table cylinder 225 to screw the adjusting nut onto the housing of the lamp 7; the electric screwdriver 233, under the pushing operation of the second sliding table cylinder 231, screws the mounting screw onto the housing of the lamp 7; the first and second displacement sensors 227 and 235 can detect the position of the adjusting nut and the mounting screw, ensuring that the parts can be screwed in place to meet the quality requirements of the lamp product. The linear guide 221 can be used to support and guide the servo motor 222 to move precisely along the up and down trajectories in the Z-axis direction; the bearing 224 is installed in the bearing seat 223, and the bearing 224 can eliminate the wobbling during the screwing process of the servo motor 222 when screwing the adjusting nut, ensuring the perpendicularity of the screwing of the adjusting nut, avoiding angular deviation, meeting the precision requirements of the lamp product, being safe and reliable, and the mounting screw is screwed onto the lamp under the action of the electric screwdriver 233; when the adjusting nut and the mounting screw are screwed in place, the main cylinder 14 in the device main body 1 drives the movable plate 13 to open the top plate 25 and the bottom plate 21 up and down, and the operator takes out the screwed lamp product.

[0075] The automatic screwing device for lamp nuts and screws designed in the present invention can reduce the load, improve the smoothness of up and down movement, is simple to operate and use, safe and reliable. This automatic screwing device is an improvement in the technical strength of the automated production line, reducing the production cost and improving the operation efficiency. The popularization and application of this technology in lamp products promotes the development direction of digitization and intelligentization, improves the technical strength of the enterprise, and ensures the product quality.

[0076] In the nut and screw screwing mechanism of the present invention, two sets of nut screwing units and two sets of screw screwing units are symmetrically arranged, so that it can simultaneously meet the automatic screwing and assembly of nuts and screws for two lamps, greatly improving the operation efficiency.

[0077] The above are the preferred embodiments of the present invention, which are only used to explain the present invention and are not used to limit the present invention. Any obvious changes or variations derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. An automatic screwing device for lamp nuts and screws, characterized in that, The screwing device includes the following structural settings: A device main body (1) with a horizontal table board (11) inside. A slide rail (12) in the Y-axis direction is provided on the table board (11). Above the table board (11), there is also a movable board (13) with a moving degree of freedom in the Z-axis direction. A main cylinder (14) for driving the movable board (13) to move in the Z-axis direction is provided on the device main body (1); A nut-screw screwing mechanism (2) is arranged in the slide rail (12) and has a moving degree of freedom in the Y-axis direction. It is used for automatically screwing nuts and screws onto the lamp (7) placed on it. The nut-screw screwing mechanism (2) includes at least one set of nut screwing units (22) and at least one set of screw screwing units (23); A pressing mechanism (3) is arranged in the nut-screw screwing mechanism (2) and moves in the Z-axis direction by the drive of the movable board (13) to press the lamp (7) onto the nut-screw screwing mechanism (2). The pressing mechanism (3) also has a degree of freedom for adjusting the length in the Z-axis direction; A display screen (4) is provided on the device main body (1) for displaying the product quality during the nut and screw screwing process; An electric cabinet (5) is arranged in the device main body (1) for installing the wiring of the electrical circuit board in this automatic screwing device; And a start-stop button (6) is provided on the device main body (1) for controlling the operation / stop of this automatic screwing device.

2. The automatic screwing device for lamp nuts and screws according to claim 1, wherein, A number of guide shafts (15) extending in the Z-axis direction are arranged in the device main body (1). The movable board (13) is slidably arranged on the guide shafts (15) and is driven by the main cylinder (14).

3. An automatic screwing device for lamp nuts and screws according to claim 2, characterized in that, A number of linear bushings (16) are fixedly arranged on the movable board (13). The movable board (13) is slidably arranged on the guide shafts (15) through the linear bushings (16).

4. The automatic screwing device for lamp nuts and screws according to claim 1, characterized in that The nut-screw screwing mechanism (2) includes the following structural settings: A bottom plate (21) is arranged in the slide rail (12). A number of lower guide posts (211) extending in the Z-axis direction are provided on it. A number of first mounting cavities (212) and second mounting cavities (213) arranged in the X-axis direction are also provided on the bottom plate (21); At least one set of nut screwing units (22) is installed in the first mounting cavity (212) and has a moving degree of freedom in the Z-axis direction. The nut screwing units (22) are used for screwing nuts onto the lamp (7); At least one set of screw screwing units (23) is installed in the second mounting cavity (213) and has a moving degree of freedom in the Z-axis direction. The screw screwing units (23) are used for screwing screws onto the lamp (7); A number of limit blocks (24) are arranged on the bottom plate (21) for placing the lamp (7) and limiting it. The top plate (25) is provided with a plurality of upper guide posts (251) extending in the Z-axis direction. The upper guide posts (251) are inserted into the lower guide posts (211). The top plate (25) is also connected to the movable plate (13) and is driven by it to move in the Z-axis direction. And a plurality of laser sensors (26) are used to respectively detect whether there are nuts and screws in the nut screwing unit (22) and the screw screwing unit (23).

5. The automatic screwing device for lamp nuts and screws according to claim 4, characterized in that The nut and screw screwing mechanism (2) further includes a first mounting plate (27) and a second mounting plate (28). Among them, the first mounting plate (27) is arranged on the bottom plate (21) through a plurality of first support rods (271) extending in the Z-axis direction. At the positions corresponding to the first mounting cavity (212) and the second mounting cavity (213) on the first mounting plate (27), there are respectively a first cavity (272) and a second cavity (273) for accommodating the nut screwing unit (22) and the screw screwing unit (23). The second mounting plate (28) is arranged on the first mounting plate (27) through a plurality of second support rods (281) in the Z-axis direction, and the second mounting plate (28) is only arranged corresponding to the position of the second cavity (273). There is also a third cavity (282) for accommodating the screw screwing unit (23) on it. A plurality of limit blocks (24) are respectively arranged on the first mounting plate (27) and the second mounting plate (28).

6. The automatic screwing device for lamp nuts and screws according to claim 4, characterized in that, The nut and screw screwing mechanism (2) further includes a plurality of light spot sensors (29) arranged on the top plate (25), which are used to detect whether the lamp (7) is placed on the limit block (24) to prevent the automatic screwing device from operating in an empty load state.

7. The automatic screwing device for lamp nuts and screws according to claim 4, characterized in that In the nut and screw screwing mechanism (2), two groups of nut screwing units (22) and two groups of screw screwing units (23) are symmetrically arranged about the Y-axis.

8. An automatic screwing device for lamp nuts and screws according to claim 4, characterized in that, The nut screwing unit (22) includes the following structural settings: A linear guide rail (221) is installed in the first mounting cavity (212) along the Z-axis direction. A servo motor (222) is slidably arranged on the linear guide rail (221). A bearing seat (223) is arranged on the bottom plate (21), and a bearing (224) is also arranged on the bearing seat (223). A first slide table cylinder (225) is arranged on the bottom plate (21), and is used to drive the servo motor (222) to move in the Z-axis direction. A nut locking head (226) is used to automatically screw the nut onto the lamp (7). The nut locking head (226) slides through the bearing (224) in the Z-axis direction and is connected to the output end of the servo motor (222). And a first displacement sensor (227) is arranged on the bottom plate (21) to perform in-place detection on the nut locking head (226) to ensure that the nut on it can be screwed onto the lamp (7).

9. An automatic screwing device for lamp nuts and screws according to claim 4, characterized in that, The screw screwing unit (23) includes the following structural settings: A second slide table cylinder (231) is arranged in the second mounting cavity (213). The hoop seat (232) is arranged on the second slide cylinder (231) and driven by it; The electric screwdriver (233) is arranged on the hoop seat (232) and driven by the second slide cylinder (231) to move in the Z-axis direction; The screw locking head (234) is arranged at the output end of the electric screwdriver (233) and used to automatically screw the screw onto the lamp (7); And the second displacement sensor (235) is arranged on the bottom plate (21) and used to detect the in-place of the screw locking head (234) to ensure that the screw thereon can be screwed onto the lamp (7).

10. The automatic screwing device for lamp nuts and screws according to claim 4, characterized in that, The pressing mechanism (3) includes the following structural settings: The adjusting seat (31) is fixedly arranged on the top plate (25); And the adjusting column (32) is arranged along the Z-axis direction. One end of it is threadedly connected to the adjusting seat (31). The adjusting column (32) is used to press the lamp (7) placed on the limiting block (24).

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