Blowing and sucking lock unit

Abstract

The utility model relates to screw installation technical field, concretely is a kind of blow and suck lock unit, including bottom plate and electric screwdriver, electric screwdriver can slide up and down along bottom plate, still including positioning unit, lock unit and ejector unit, positioning unit is located bottom plate front below, electric screwdriver can be driven to move up and down, for adjusting the height of electric screwdriver initial position;Lock unit is located bottom plate front above, located electric screwdriver side, when lock unit moves up, the head of electric screwdriver can be extended;Ejector unit is located bottom plate front above, located electric screwdriver other side, for driving electric screwdriver to move up and down. Through vacuum adsorption mode suction screw, and the collaborative action of ejector unit and lock unit, ensure that the smooth transfer of screw from feeding position to workpiece lock position. Especially the introduction of oil buffer, effectively absorbed the impact energy when slider down, prevent the screw that has adsorbed from falling off due to violent vibration, improve the reliability of operation.

Description

Technical Field

[0001] This utility model relates to the field of screw installation technology, and in particular to a blow-suction locking unit. Background Technology

[0002] In the field of automated assembly, automatic screw fastening equipment is widely used on production lines for products such as electronics, home appliances, and automobiles to replace traditional manual operations and improve production efficiency. Existing automatic screw fastening equipment typically uses air blowing or suction to feed screws. Air blowing screw feeding is highly efficient, but it can easily cause screws to flip over or get stuck during the feeding process; suction screw feeding utilizes vacuum adsorption, which has lower requirements on the screw's posture and is less prone to jamming, but the adsorbed screws are easily dislodged due to vibration or impact during movement.

[0003] Furthermore, existing magnetic screw fasteners are typically structurally complex. The initial height adjustment of the electric screwdriver and the extension and retraction control of the screwdriver bit rely on the complex coordination of multiple drive sources, resulting in a less compact overall structure and inconvenient debugging and maintenance. Additionally, rigid impacts during screw fastening and movement can further increase the risk of screws falling off, affecting the stability and reliability of the fastening operation.

[0004] Therefore, the main problem in the existing technology is: how to provide a blow-suction locking unit that is compact, easy to debug and runs smoothly, so as to stably complete the suction, movement and locking of screws in complex working environments and avoid screws falling off due to vibration during the conveying process. Utility Model Content

[0005] The main objective of this invention is to provide a blow-suction locking unit to solve the problems raised in related technologies.

[0006] To achieve the above objectives, according to one aspect of the present invention, a blow-suction locking unit is provided, comprising a base plate and an electric screwdriver, wherein the electric screwdriver is slidable up and down along the base plate, and further comprising:

[0007] A positioning unit is located below the front of the base plate and can drive the electric screwdriver to move up and down to adjust the height of the initial position of the electric screwdriver.

[0008] The locking unit is located on the upper front of the base plate, on one side of the electric screwdriver. When the locking unit moves upward, the screwdriver bit of the electric screwdriver can be extended.

[0009] The ejection unit is located above the front of the base plate, on the other side of the electric screwdriver. It is used to drive the electric screwdriver to move up and down and bring the screwdriver bit to the workpiece where the screw needs to be installed.

[0010] Furthermore, a slide rail is fixedly provided vertically in the center of the front of the base plate, and a positioning cylinder mounting plate is fixedly installed at the bottom of the front. An electric screwdriver mounting block and a slider are slidably provided on the slide rail. The electric screwdriver mounting block is fixedly connected to the electric screwdriver. The slider is used to install the locking unit, and the positioning cylinder mounting plate is used to install the positioning unit.

[0011] Furthermore, the positioning unit includes a positioning cylinder, and a positioning cylinder sleeve is fixedly installed on the top of the piston rod of the positioning cylinder, and a nut is rotatably connected to the top of the positioning cylinder sleeve.

[0012] Furthermore, the ejection unit includes an ejection cylinder, and the bottom end of the ejection cylinder piston rod is fixedly provided with a threaded rod, which is threadedly connected to a nut.

[0013] Furthermore, the locking unit includes a locking cylinder, which is fixedly connected to the electric screwdriver mounting block. A locking cylinder sleeve is fixedly provided at the bottom of the locking cylinder, and the locking cylinder piston rod extends out from the locking cylinder sleeve and is slidably connected to the locking cylinder sleeve.

[0014] Furthermore, a stop block is fixedly provided at the bottom end of the piston rod of the locking cylinder, and a spring is sleeved on the outer ring. The top end of the spring is fixedly connected to the sleeve of the locking cylinder, and the bottom end is fixedly connected to the stop block.

[0015] Furthermore, a vacuum chamber is fixedly provided on the front of the slider, and a conduit is fixedly provided at the bottom of the vacuum chamber. The vacuum chamber is used to create a vacuum in the conduit.

[0016] Furthermore, a chuck is fixedly installed at the front end of the lower surface of the positioning cylinder mounting plate. The chuck has a vertical channel inside and an air blowing port is fixedly installed on the chuck. The air blowing port is connected to the vertical channel to provide a channel for the screw.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. Achieved stable screw picking and reliable fastening: Screws are picked up by vacuum adsorption, and the coordinated action of the ejection unit and the fastening unit ensures a smooth transfer of the screw from the feeding position to the workpiece fastening position. In particular, the introduction of the hydraulic damper effectively absorbs the impact energy when the slider moves downward, preventing the adsorbed screws from falling off due to severe vibration, thus improving the reliability of the operation.

[0019] 2. Improved equipment structural compactness and ease of debugging: By combining the positioning cylinder with a fine-tuning unit consisting of a threaded rod and nut, precise and convenient adjustment of the initial height of the ejection unit is achieved, ensuring that the relative position of the guide tube and the air inlet is always optimal. This integrated design reduces unnecessary space occupation, making the entire unit structure compact and simplifying and facilitating initial setup and subsequent maintenance adjustments. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the entire utility model. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the entire utility model. Figure 2 .

[0022] Figure label:

[0023] 1. Base plate; 2. Slide rail; 3. Electric screwdriver; 4. Electric screwdriver mounting block; 5. Locking cylinder; 6. Ejector cylinder piston rod; 7. Locking cylinder sleeve; 8. Spring; 9. Locking cylinder piston rod; 10. Stop block; 11. Slider; 12. Inlet; 13. Vacuum chamber; 14. Guide tube; 15. Air outlet; 16. Chuck; 17. Screwdriver bit; 18. Hydraulic damper; 19. Ejector cylinder; 20. Threaded rod; 21. Nut; 22. Positioning cylinder sleeve; 23. Positioning cylinder mounting plate; 24. Positioning cylinder. Detailed Implementation

[0024] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0025] This embodiment provides a blow-suction locking unit, such as Figure 1 As shown, the blow-suction locking unit includes a base plate 1, which serves as the basic support structure for the entire device. A slide rail 2 is fixedly installed vertically in the center of the front of the base plate 1. A positioning cylinder mounting plate 23 is fixedly installed at the bottom of the front of the base plate 1.

[0026] An electric screwdriver mounting block 4 and a slider 11 are both slidably mounted on the slide rail 2. The electric screwdriver 3 is connected to the slide rail 2 via the electric screwdriver mounting block 4 and can slide up and down along the slide rail 2 together with the electric screwdriver mounting block 4. The bottom end of the electric screwdriver 3 is equipped with a screwdriver bit 17 for tightening screws.

[0027] The positioning unit is located below the front of the base plate 1 and is mainly used to adjust the initial height of the entire locking unit. The positioning unit includes a positioning cylinder 24 fixedly installed at the bottom of the positioning cylinder mounting plate 23. The piston rod of the positioning cylinder 24 passes upward through the positioning cylinder mounting plate 23, and a positioning cylinder sleeve 22 is fixedly installed at the top of the piston rod. A nut 21 is rotatably connected to the top of the positioning cylinder sleeve 22.

[0028] The ejector unit is located on the front upper part of the base plate 1, on one side of the electric screwdriver 3, and is used to drive the electric screwdriver 3 to perform the main up and down movement. For example... Figure 2 As shown, the ejection unit includes an ejection cylinder 19, which is fixedly connected to the electric screwdriver mounting block 4. A threaded rod 20 is fixedly provided at the bottom end of the ejection cylinder piston rod 6 of the ejection cylinder 19. This threaded rod 20 is threadedly connected to the nut 21 in the positioning unit, thus forming a fine-tuning unit. By rotating the nut 21, the length of the threaded rod 20 extending into the positioning cylinder sleeve 22 can be changed, thereby precisely adjusting the initial height position of the ejection cylinder 19 and the connected electric screwdriver 3. This ensures that the bottom end of the guide tube 14 is located inside the chuck 16 and above the bottom end of the air inlet 15, so that screws entering from the air inlet 15 can be attracted to the bottom of the guide tube 14.

[0029] The locking unit is located on the front upper part of the base plate 1, on the other side of the electric screwdriver 3, and is mainly used to control the exposure of the screwdriver bit 17 for locking. The locking unit includes a locking cylinder 5, which is fixedly connected to the electric screwdriver mounting block 4. A locking cylinder sleeve 7 is fixedly provided at the bottom of the locking cylinder 5. The locking cylinder piston rod 9 of the locking cylinder 5 extends from the locking cylinder sleeve 7 and can slide relative to it. A stop block 10 is fixedly provided at the bottom end of the locking cylinder piston rod 9. A spring 8 is sleeved on the locking cylinder piston rod 9, the top end of which is fixedly connected to the locking cylinder sleeve 7, and the bottom end is fixedly connected to the stop block 10. The stop block 10 is fixedly connected to the slider 11.

[0030] A vacuum chamber 13 is fixedly mounted on the front of the slider 11. A conduit 14 is fixedly connected to the bottom end of the vacuum chamber 13. An air intake 12 is provided on the vacuum chamber 13 for connecting to an external vacuum device (not shown in the figure) to generate negative pressure in the vacuum chamber 13 and the conduit 14. The bit 17 of the electric screwdriver 3 passes through the vacuum chamber 13 and the conduit 14 from above and can slide up and down within them.

[0031] A chuck 16 is fixedly mounted on the front end of the lower surface of the positioning cylinder mounting plate 23. A vertical channel is provided inside the chuck 16. An air inlet 15 is provided on the side wall of the chuck 16, which communicates with the vertical channel and is used to connect a screw from the feeder. A guide tube 14 passes through the vertical channel of the chuck 16.

[0032] On the upper surface of the positioning cylinder mounting plate 23, directly below the slider 11, a hydraulic damper 18 is fixedly installed. When the slider 11 moves downward, it presses against the hydraulic damper 18, thereby achieving smooth buffering and avoiding rigid impact.

[0033] The working principle of this utility model is as follows:

[0034] In the initial state, the piston rod of the ejector cylinder 19 extends, and the piston rod of the locking cylinder 5 also extends. At this time, the bottom end of the guide tube 14 is located above the vertical channel of the chuck 16, and the bottom end of the bit 17 is retracted inside the guide tube 14, providing space for the screw to enter the guide tube 14.

[0035] During operation, an external air source blows a screw into the chuck 16 through the air inlet 15, while an external vacuum device creates negative pressure in the conduit 14 through the air inlet 12, causing the screw to be attracted to the bottom of the conduit 14.

[0036] Next, the piston rod of the ejector cylinder 19 retracts, driving the entire electric screwdriver 3 and locking unit downwards, sending the guide tube 14 with the screw attached and the screwdriver bit 17 out of the chuck 16 until the workpiece is in the locking position. During this process, the slider 11 contacts and compresses the hydraulic damper 18, achieving smooth deceleration.

[0037] Then, the piston rod of the locking cylinder 5 retracts, causing the vacuum chamber 13 and the guide tube 14 to move upward a short distance via the stop block 10 and the slider 11, thereby exposing the bottom end of the screwdriver bit 17 from the guide tube 14 and contacting the screw. At this time, the electric screwdriver 3 starts, rotating the screwdriver bit 17 to lock the screw into the workpiece. After locking is completed, each cylinder resets, preparing for the next work cycle.

[0038] By rotating the nut 21 in the fine-tuning unit, it can be precisely ensured that the bottom end of the conduit 14 is accurately positioned below the air inlet 15 in the initial position, ensuring that the screw can be reliably attracted.

[0039] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A blow-suction locking unit, comprising a base plate (1) and an electric screwdriver (3), wherein the electric screwdriver (3) is slidable up and down along the base plate (1), characterized in that, Also includes: The positioning unit is located below the front of the base plate (1) and can drive the electric screwdriver (3) to move up and down to adjust the height of the initial position of the electric screwdriver (3). The locking unit is located above the front of the base plate (1) and on one side of the electric screwdriver (3). When the locking unit moves upward, the screwdriver bit (17) of the electric screwdriver (3) can be extended. The ejection unit is located above the front of the base plate (1) and on the other side of the electric screwdriver (3). It is used to drive the electric screwdriver (3) to move up and down and bring the screwdriver bit (17) to the workpiece where screws need to be installed.

2. The blow-suction locking unit according to claim 1, characterized in that, The base plate (1) has a slide rail (2) fixedly installed vertically in the middle of the front side, and a positioning cylinder mounting plate (23) fixedly installed at the bottom of the front side. An electric screwdriver mounting block (4) and a slider (11) are slidably installed on the slide rail (2). The electric screwdriver mounting block (4) is fixedly connected to the electric screwdriver (3). The slider (11) is used to install the locking unit. The positioning cylinder mounting plate (23) is used to install the positioning unit.

3. The blow-suction locking unit according to claim 1, characterized in that, The positioning unit includes a positioning cylinder (24), and a positioning cylinder sleeve (22) is fixedly installed on the top of the piston rod of the positioning cylinder (24). A nut (21) is rotatably connected to the top of the positioning cylinder sleeve (22).

4. The blow-suction locking unit according to claim 3, characterized in that, The ejection unit includes an ejection cylinder (19), and the bottom end of the ejection cylinder piston rod (6) of the ejection cylinder (19) is fixedly provided with a threaded rod (20), and the threaded rod (20) is threadedly connected to a nut (21).

5. The blow-suction locking unit according to claim 2, characterized in that, The locking unit includes a locking cylinder (5), which is fixedly connected to the electric screwdriver mounting block (4). A locking cylinder sleeve (7) is fixedly provided at the bottom of the locking cylinder (5). The locking cylinder piston rod (9) of the locking cylinder (5) extends out from the locking cylinder sleeve (7) and is slidably connected to the locking cylinder sleeve (7).

6. The blow-suction locking unit according to claim 5, characterized in that, The piston rod (9) of the locking cylinder is fixedly provided with a stop block (10) at the bottom end, and a spring (8) is provided on the outer ring. The top end of the spring (8) is fixedly connected to the cylinder sleeve (7), and the bottom end is fixedly connected to the stop block (10).

7. The blow-suction locking unit according to claim 2, characterized in that, The slider (11) is fixedly provided with a vacuum chamber (13) on the front side, and a conduit (14) is fixedly provided at the bottom end of the vacuum chamber (13). The vacuum chamber (13) is used to generate a vacuum in the conduit (14).

8. The blow-suction locking unit according to claim 2, characterized in that, A chuck (16) is fixedly installed on the front end of the lower surface of the positioning cylinder mounting plate (23). A vertical channel is provided inside the chuck (16), and an air blowing port (15) is fixedly provided on the chuck (16). The air blowing port (15) is connected to the vertical channel and is used to provide a channel for the screw.

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