Assembly equipment for hair dryer production

Abstract

This invention discloses an assembly device for hair dryer production, relating to the technical field of hair dryer production equipment. It includes a turntable with multiple base plates on its top. An adjustment cavity is formed in the center of each base plate, and multiple sets of sliding grooves are symmetrically formed on the top of each base plate. Vertical grooves are formed at the bottom of the inner cavity of each sliding groove. This invention achieves online precision calibration and stable locking of the outer shell angle through the coordinated operation of an angle adjustment component and a pressing and fixing component. When an infrared sensor detects a deviation in the horizontal position of the outer shell, a drive motor rotates the adjusting cylinder via a one-way bearing. The friction between the rubber pad and the bottom of the outer shell drives the outer shell to rotate, completing the angle correction. Simultaneously, when the first electromagnet is de-energized, a pressing spring provides basic clamping force to ensure the outer shell does not wobble during the rotation of the disc. After calibration, the first electromagnet is energized to enhance the clamping force and lock the outer shell, significantly improving positioning accuracy and assembly consistency.

Description

Technical Field

[0001] This invention relates to the field of hair dryer manufacturing equipment technology, and more particularly to an assembly device for hair dryer manufacturing. Background Technology

[0002] In the production process of hair dryers, disc-type assembly equipment is usually used to automate the assembly of the outer shell. This equipment includes a disc worktable and multiple accompanying tooling plates evenly distributed along the circumference, which are used to complete the processes of loading the outer shell, installing internal components, and closing the back cover in sequence. In the existing technology, the accompanying tooling plates mainly rely on contour positioning grooves or spring clamps to position and fix the outer shell.

[0003] However, existing equipment has the following shortcomings: First, after the outer shell is placed on the tooling plate, its horizontal angle only depends on the geometric constraint of the positioning groove, lacking an active detection and calibration mechanism. When the outer shell rotates slightly due to feeding deviation or disc indexing impact, subsequent processes (such as back cover closing) are prone to alignment errors, affecting assembly quality. Second, the traditional clamping mechanism uses fixed elastic jaws, which cannot actively reduce the clamping force during calibration, resulting in high rotational resistance of the outer shell and difficulty in calibration. Completely releasing the jaws will cause the outer shell to lose constraint, resulting in uncontrolled displacement. Third, there is a lack of coordinated control between clamping force adjustment and angle calibration actions. Existing equipment cannot achieve an automated closed loop in the entire process of "detection-calibration-locking".

[0004] The present invention aims to solve the above problems and provides an assembly device for producing hair dryers that can automatically detect the horizontal angle of the outer shell, actively reduce the clamping force before calibration, and automatically restore and enhance the clamping force after calibration, thereby realizing online precision calibration and adaptive clamping of the outer shell angle. Summary of the Invention

[0005] The purpose of this invention is to provide an assembly device for hair dryer production, which solves the problem that during the automated assembly of hair dryers, the outer shell cannot be detected and corrected online due to horizontal angle deviation on the accompanying tooling plate, and the clamping force and rotation action cannot be controlled in a coordinated manner during correction.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: An assembly device for producing hair dryers includes a turntable. Multiple base plates are disposed on the top of the turntable. An adjustment cavity is formed in the middle of each base plate. Multiple sets of sliding grooves are symmetrically formed on the top of the base plates. Vertical grooves are formed at the bottom of the inner cavities of the sliding grooves. An angle adjustment component is disposed in the inner cavity of the adjustment cavity. A pressing and fixing component is disposed in the inner cavity of the sliding grooves. A pushing component is disposed in the inner cavity of the vertical grooves. A side plate is disposed on the top of the base plates away from the pressing and fixing component. A hair dryer housing is placed on the top of the base plates. The angle adjustment assembly includes a drive motor, the output shaft of the drive motor is provided with a one-way bearing, the outer surface of the one-way bearing is provided with an adjustment cylinder, and multiple rubber pads are fixedly installed on the outer surface of the adjustment cylinder. The compression fixing assembly includes a vertical rod, a first electromagnet is provided on one side of the vertical rod, a plurality of compression springs are provided on one side of the vertical rod, a compression rod is fixedly connected to the other side of the compression springs, a metal sheet is fixedly installed on the side of the compression rod facing the first electromagnet, and a compression pad is fixedly installed on the side of the compression rod away from the first electromagnet.

[0007] As a preferred embodiment of the present invention, the pushing assembly includes a second electromagnet, a guide rod is fixedly installed on the top of the second electromagnet, a sleeve rod is sleeved on the outer surface of the guide rod, a push block is provided on the top of the sleeve rod, the top side of the push block is designed with a slope, the bottom side of the extrusion rod is designed with a slope, and the shape and angle of the slope of the top of the push block match the slope of the bottom of the extrusion rod.

[0008] As a preferred embodiment of the present invention, the top of the adjustment cavity penetrates the top surface of the substrate, the outer surface of the adjustment cylinder extends into it and protrudes from the top of the adjustment cavity, and the thickness of the rubber pad is set from high to low.

[0009] As a preferred embodiment of the present invention, the shape of the outer surface of the bottom of the extrusion rod matches the shape of the inner cavity of the sliding groove, the extrusion rod is slidably connected to the vertical rod through the extrusion spring, and the first electromagnet has the same magnetic pole as the metal sheet when energized.

[0010] As a preferred embodiment of the present invention, the bottom of the push block is made of metal, and the second electromagnet has the same magnetic poles as the bottom surface of the push block after being energized.

[0011] As a preferred embodiment of the present invention, the output shaft of the drive motor is connected to the adjusting cylinder through a one-way bearing. The one-way bearing is configured such that when the drive motor rotates forward, it drives the adjusting cylinder to rotate synchronously; when the drive motor rotates in reverse, the adjusting cylinder remains stationary.

[0012] As a preferred embodiment of the present invention, the width of the push block is greater than the difference between the maximum and minimum diameters of the outer casing of a hair dryer of the same type.

[0013] As a preferred embodiment of the present invention, the compression pad is made of an elastic and stretchable material, and the maximum stretchable width of the compression pad is greater than the width of the push block.

[0014] As a preferred embodiment of the present invention, the outer surface of the side plate is provided with multiple sets of infrared sensors, and the multiple sets of infrared sensors, drive motor, first electromagnet, and second electromagnet are all electrically connected to the control system of the turntable.

[0015] As a preferred embodiment of the present invention, the control system includes a controller and a control program stored in the controller, wherein the controller is configured as follows: Once the angle of the hair dryer housing is calibrated, a stop command is first sent to the drive motor, then a power-on command is sent to the first electromagnet, which increases the clamping force of the extrusion rod on the hair dryer housing under the action of magnetic repulsion. Then, a power-off command is sent to the second electromagnet, which causes the push block to descend and reset under the action of gravity or the return spring.

[0016] Compared with the prior art, the advantages of the present invention are as follows: 1. This invention achieves online precision calibration and stable locking of the shell angle through the coordinated operation of the angle adjustment component and the compression fixing component. When the infrared sensor detects a deviation in the horizontal position of the shell, the drive motor drives the adjustment cylinder to rotate through the one-way bearing. The friction between the rubber pad and the bottom of the shell drives the shell to rotate and complete the angle correction. At the same time, when the first electromagnet is de-energized, the compression spring provides the basic clamping force to ensure that the shell does not shake during the rotation of the disc. After calibration, the first electromagnet is energized to enhance the clamping force and lock the shell, which significantly improves the positioning accuracy and assembly consistency.

[0017] 2. This invention achieves active reduction and automatic recovery of clamping force before calibration by linking the inclined surfaces of the pushing component and the extrusion rod. When angle calibration is required, the second electromagnet drives the push block to move upward. The inclined surface at the top of the push block slides and engages with the inclined surface at the bottom of the extrusion rod, converting the vertical thrust into a horizontal thrust, which pushes the extrusion rod outward, thereby reducing the clamping force and creating conditions for the free rotation of the shell. After calibration, the second electromagnet is de-energized, the push block is reset, and the extrusion rod returns to its original position under the action of the spring to restore clamping. The structure is simple, the response is rapid, and the reliability is high. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention from the top right front side. Figure 2 This is a schematic diagram of the top left front side view of the overall structure of the present invention after it has been cut open. Figure 3 This is a schematic diagram of the appearance of the right front top view after the overall structure of the present invention has been cut open. Figure 4 For the present invention Figure 3 A schematic diagram of the structure at point A.

[0019] Reference numerals: 1. Turntable; 2. Base plate; 3. Drive motor; 4. Vertical rod; 5. Second electromagnet; 6. Side plate; 7. Hair dryer housing; 201. Adjustment chamber; 202. Sliding groove; 203. Vertical groove; 301. One-way bearing; 302. Adjustment cylinder; 303. Rubber pad; 401. First electromagnet; 402. Compression spring; 403. Compression rod; 404. Metal sheet; 405. Compression pad; 501. Guide rod; 502. Sleeve rod; 503. Push block. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] Please see Figures 1 to 4 This embodiment provides an assembly device for producing hair dryers, including a turntable 1. Multiple base plates 2 are disposed on the top of the turntable 1. An adjustment cavity 201 is formed in the middle of each base plate 2. Multiple sets of sliding grooves 202 are symmetrically formed on the top of the base plate 2. A vertical groove 203 is formed at the bottom of the inner cavity of each sliding groove 202. An angle adjustment component is disposed in the inner cavity of the adjustment cavity 201. A pressing and fixing component is disposed in the inner cavity of the sliding groove 202. A pushing component is disposed in the inner cavity of the vertical groove 203. A side plate 6 is disposed on the side of the top of the base plate 2 away from the pressing and fixing component. A hair dryer housing 7 is placed on the top of the base plate 2. The angle adjustment assembly includes a drive motor 3. The output shaft of the drive motor 3 is equipped with a one-way bearing 301. An adjustment cylinder 302 is mounted on the outer surface of the one-way bearing 301. Multiple rubber pads 303 are fixedly mounted on the outer surface of the adjustment cylinder 302. The top of the adjustment cavity 201 penetrates the top surface of the substrate 2. The outer surface of the adjustment cylinder 302 extends into the cavity and protrudes from the top of the adjustment cavity 201. The thickness of the rubber pads 303 decreases from high to low. During use, the thickness of the rubber pads 303 increases the friction between the adjustment cylinder 302 and the outer surface of the hair dryer housing 7 when the adjustment cylinder 302 rotates, thereby driving the hair dryer housing 7 to rotate and adjust the angle. The output shaft of the drive motor 3 is connected to the adjustment cylinder 302 via the one-way bearing 301. The one-way bearing 301 is configured such that when the drive motor 3 rotates forward, it drives the adjustment cylinder 302 to rotate synchronously; when the drive motor 3 rotates in reverse, the adjustment cylinder 302 remains stationary. The compression fixing assembly includes a vertical rod 4. A first electromagnet 401 is disposed on one side of the vertical rod 4, and multiple compression springs 402 are disposed on the other side of the vertical rod 4. A compression rod 403 is fixedly connected to the other side of the compression springs 402. A metal sheet 404 is fixedly installed on the side of the compression rod 403 facing the first electromagnet 401, and a compression pad 405 is fixedly installed on the side of the compression rod 403 away from the first electromagnet 401. The shape of the outer surface of the bottom of the compression rod 403 matches the shape of the inner cavity of the sliding groove 202. The compression rod 403 is slidably connected to the vertical rod 4 through the compression springs 402. When 401 is energized, it has the same magnetic pole as the metal sheet 404. Therefore, when the first electromagnet 401 is energized, the repulsive force generated by the same pole pushes the pressing rod 403 to move away from the first electromagnet 401, thereby increasing the clamping force of the pressing rod 403 and the pressing pad 405 on the hair dryer housing 7. The width of the push block 503 is greater than the difference between the maximum and minimum diameters of the same type of hair dryer housing 7. Therefore, when in use, the push block 503 can be used for hair dryer housings 7 with different diameters, ensuring that its top slope is always below the bottom of the pressing rod 403, thus achieving reliable pushing. The pushing assembly includes a second electromagnet 5. A guide rod 501 is fixedly mounted on the top of the second electromagnet 5. A sleeve rod 502 is fitted onto the outer surface of the guide rod 501. A push block 503 is provided on the top of the sleeve rod 502. One side of the top of the push block 503 is designed with a slope, and one side of the bottom of the pressing rod 403 is designed with a slope. The shape and angle of the slope at the top of the push block 503 match the slope at the bottom of the pressing rod 403. Therefore, when the push block 503 moves upward during use, it can push the pressing rod 403 towards the side of the first electromagnet 401, thereby reducing the clamping force of the pressing rod 403 and the pressing pad 405 on the hair dryer housing 7. The bottom of block 503 is made of metal. When the second electromagnet 5 is energized, the magnetic poles between it and the bottom surface of the push block 503 are the same. Therefore, when in use, when the second electromagnet 5 is energized, under the action of repulsive force, it pushes the push block 503 upward through the guide rod 501 and the sleeve rod 502, thereby pushing the pressing rod 403 at the upper position to move. The pressing pad 405 is made of elastic and stretchable material. The maximum stretchable width of the pressing pad 405 is greater than the width of the push block 503. Therefore, when in use, no matter whether the push block 503 is in the rising or falling position, the pressing pad 405 can maintain contact with the outer surface of the hair dryer housing 7, preventing the housing from rotating unexpectedly when the clamping force weakens. Multiple sets of infrared sensors are provided on the outer surface of the side plate 6. The multiple sets of infrared sensors, drive motor 3, first electromagnet 401, and second electromagnet 5 are all electrically connected to the control system of turntable 1. The control system includes a controller and a control program stored in the controller. The controller is configured as follows: Once the angle of the hair dryer housing 7 is calibrated, a stop command is first sent to the drive motor 3, and then a power-on command is sent to the first electromagnet 401, so that the pressing rod 403 increases the clamping force on the hair dryer housing 7 under the action of magnetic repulsion. Then, a power-off command is sent to the second electromagnet 5, so that the push block 503 descends and resets under the action of gravity or the reset spring.

[0022] Working principle: First, assemble all the structures correctly. Then, use the disc-type turntable 1 to assemble the hair dryer. During operation, the hair dryer rotates intermittently with the turntable 1. Multiple base plates 2 are evenly distributed around the turntable 1. Each base plate 2 carries a hair dryer housing 7. The working principle is explained below using the working cycle of a single base plate 2 as an example.

[0023] Initial state and casing placement: During the pause of the turntable 1, the robotic arm places the hair dryer housing 7 into a predetermined position on the top of the substrate 2. At this time, the pressing rods 403 on both sides move towards the center of the substrate 2 under the elastic force of the pressing spring 402, so that the pressing pad 405 adheres to the side wall of the hair dryer housing 7 with a basic clamping force. The first electromagnet 401 and the second electromagnet 5 are both de-energized, and the rubber pad 303 on the adjusting cylinder 302 maintains slight contact with the bottom of the housing.

[0024] Horizontal position detection and deviation judgment: The infrared sensor installed on the side plate 6 detects the horizontal projection position of the upper edge of the hair dryer housing 7 in real time. The detection signal is transmitted to the control system of the turntable 1. The control system compares the actual position value with the preset standard position threshold. If the position deviation is within the allowable range, it directly enters the subsequent assembly process; if the deviation exceeds the threshold, the angle calibration process is started.

[0025] Angle calibration preparation: Reduce clamping force: The control system first energizes the second electromagnet 5. The second electromagnet 5 and the metal material at the bottom of the push block 503 generate a repulsive force with the same magnetic poles, pushing the push block 503 to move upward. The guide rod 501 and the sleeve rod 502 ensure that the push block 503 rises in a straight line along the vertical groove 203. The inclined surface at the top of the push block 503 contacts the inclined surface at the bottom of the extrusion rod 403. As the push block 503 continues to move upward, the inclined surfaces work together to generate a horizontal component force, which pushes the extrusion rod 403 to overcome the elastic force of the extrusion spring 402 and move away from the outer shell, i.e., outward. At this time, the clamping force of the extrusion pad 405 on the side wall of the outer shell is significantly reduced, providing conditions for the free rotation of the outer shell.

[0026] Angle calibration: Drive housing rotation: The control system then starts the drive motor 3, which rotates forward and drives the adjusting cylinder 302 to rotate synchronously through the one-way bearing 301. The rubber pad 303 on the outer surface of the adjusting cylinder 302 contacts the bottom edge of the blower housing 7. By utilizing the gradual thickness design and surface friction coefficient of the rubber pad 303, the housing is driven to rotate slowly around its vertical axis. During the calibration process, the infrared sensor on the side plate 6 continuously monitors the position change of the upper edge of the shell and feeds the real-time data back to the control system. The control system dynamically adjusts the rotation direction and angle of the drive motor 3 according to the difference between the feedback value and the target value, forming a closed-loop control. When the horizontal position of the shell reaches the preset allowable range, the control system stops the drive motor 3.

[0027] Calibration complete: Restore and enhance clamping force: After the housing angle is corrected, the control system executes the following timing sequence: First, the first electromagnet 401 is energized. The first electromagnet 401 and the metal sheet 404 on the extrusion rod 403 generate the same repulsive force, which pushes the extrusion rod 403 to move further towards the center of the substrate 2, so that the extrusion pad 405 clamps the side wall of the outer shell with greater pressure, ensuring that the outer shell will not be displaced in subsequent processes. When the power supply to the second electromagnet 5 is disconnected, the magnetic repulsion of the second electromagnet 5 disappears, and the push block 503 descends and resets along the vertical groove 203 under its own weight or the action of the auxiliary reset spring. The inclined surface at the top of the push block 503 disengages from the bottom of the pressing rod 403, and the pressing rod 403 fully recovers the standard clamping force provided by the pressing spring 402 and the first electromagnet 401.

[0028] The anti-reverse transmission function of the one-way bearing 301: Although the motor has stopped after calibration when the drive motor 3 reverses and resets, it may reverse in other working conditions or debugging modes. Since there is a one-way bearing 301 between the output shaft of the drive motor 3 and the adjusting cylinder 302, the reverse torque will not be transmitted to the adjusting cylinder 302. Therefore, the adjusting cylinder 302 remains stationary and will not drive the calibrated outer shell to rotate in the opposite direction, thus ensuring the stability of the calibration results.

[0029] Subsequent process flow: After angle calibration and clamping force locking are completed, turntable 1 rotates to the next station to carry out subsequent assembly actions such as windshield installation, fan blade pressing, and rear cover closing. Since the outer shell has been stably and accurately positioned, subsequent processes can be carried out smoothly.

[0030] Product change adaptability: When it is necessary to produce blower housings 7 of different diameters, the thickness of the extrusion pad 405 is greater than the maximum travel of the extrusion rods 403 on both sides, ensuring that it can always keep in contact with the side wall of the housing. At the same time, the control program can preset the standard position threshold for different housing models, so that it can adapt to multiple models without changing mechanical parts and achieve rapid production changeover.

[0031] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An assembly device for producing hair dryers, comprising a turntable (1), characterized in that: The top of the turntable (1) is provided with multiple base plates (2), the middle of the base plate (2) is provided with an adjustment cavity (201), the top of the base plate (2) is symmetrically provided with multiple sliding grooves (202), the bottom of the inner cavity of the sliding groove (202) is provided with a vertical groove (203), the inner cavity of the adjustment cavity (201) is provided with an angle adjustment component, the inner cavity of the sliding groove (202) is provided with a pressing and fixing component; the inner cavity of the vertical groove (203) is provided with a pushing component, the side plate (6) is provided on the side of the top of the base plate (2) away from the pressing and fixing component, and the top of the base plate (2) is provided with a blower housing (7); The angle adjustment assembly includes a drive motor (3), the output shaft of the drive motor (3) is provided with a one-way bearing (301), the outer surface of the one-way bearing (301) is provided with an adjustment cylinder (302), and multiple rubber pads (303) are fixedly installed on the outer surface of the adjustment cylinder (302). The compression fixing assembly includes a vertical rod (4), a first electromagnet (401) is provided on one side of the vertical rod (4), a plurality of compression springs (402) are provided on one side of the vertical rod (4), a compression rod (403) is fixedly connected to the other side of the compression springs (402), a metal sheet (404) is fixedly installed on the side of the compression rod (403) facing the first electromagnet (401), and a compression pad (405) is fixedly installed on the side of the compression rod (403) away from the first electromagnet (401).

2. The assembly equipment for producing hair dryers according to claim 1, characterized in that: The pushing assembly includes a second electromagnet (5), a guide rod (501) is fixedly installed on the top of the second electromagnet (5), a sleeve rod (502) is sleeved on the outer surface of the guide rod (501), a push block (503) is provided on the top of the sleeve rod (502), the top side of the push block (503) is designed with a slope, the bottom side of the extrusion rod (403) is designed with a slope, and the shape and angle of the slope at the top of the push block (503) match the slope at the bottom of the extrusion rod (403).

3. The assembly equipment for producing hair dryers according to claim 1, characterized in that: The top of the adjustment cavity (201) penetrates the top surface of the substrate (2), the outer surface of the adjustment cylinder (302) extends into it and protrudes at the top penetration of the adjustment cavity (201), and the thickness of the rubber pad (303) is set from high to low.

4. The assembly equipment for producing hair dryers according to claim 1, characterized in that: The shape of the bottom outer surface of the extrusion rod (403) matches the shape of the inner cavity of the sliding groove (202). The extrusion rod (403) is slidably connected to the vertical rod (4) through the extrusion spring (402). When the first electromagnet (401) is energized, it has the same magnetic pole as the metal sheet (404).

5. The assembly equipment for producing hair dryers according to claim 2, characterized in that: The bottom of the push block (503) is made of metal, and the second electromagnet (5) has the same magnetic poles as the bottom surface of the push block (503) after being energized.

6. The assembly equipment for producing hair dryers according to claim 1, characterized in that: The output shaft of the drive motor (3) is connected to the adjusting cylinder (302) through a one-way bearing (301). The one-way bearing (301) is configured such that when the drive motor (3) rotates forward, it drives the adjusting cylinder (302) to rotate synchronously; when the drive motor (3) rotates in reverse, the adjusting cylinder (302) remains stationary.

7. The assembly equipment for producing hair dryers according to claim 2, characterized in that: The width of the push block (503) is greater than the difference between the maximum and minimum diameters of the same type of hair dryer housing (7).

8. The assembly equipment for producing hair dryers according to claim 2, characterized in that: The compression pad (405) is made of an elastic and stretchable material, and the maximum stretchable width of the compression pad (405) is greater than the width of the push block (503).

9. The assembly equipment for producing hair dryers according to claim 2, characterized in that: Multiple sets of infrared sensors are provided on the outer surface of the side plate (6). The multiple sets of infrared sensors, drive motor (3), first electromagnet (401), and second electromagnet (5) are all electrically connected to the control system of the turntable (1).

10. The assembly equipment for producing hair dryers according to claim 9, characterized in that: The control system includes a controller and a control program stored in the controller, wherein the controller is configured as follows: After the angle of the hair dryer housing (7) is calibrated, a stop command is first sent to the drive motor (3), and then a power-on command is sent to the first electromagnet (401) to make the squeezing rod (403) increase the clamping force on the hair dryer housing (7) under the action of magnetic repulsion. Then a power-off command is sent to the second electromagnet (5) to make the push block (503) descend and reset under the action of gravity or reset spring.

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