Rotatable point striking device

Abstract

The utility model discloses a rotatable point striking device, which is characterized by comprising a shell, a striker part, a rotary driving part and a striker driving part, the upper part of the striker driving part is rotatably arranged in the shell, the top of the striker part is connected with the bottom of the striker driving part, the bottom of the striker part is provided with a striker, and the striker driving part is connected with the striker part. The firing pin is arranged below the shell, and the firing pin driving part is configured to drive the firing pin part to move up and down; the rotary driving part is mounted at the top of the shell or mounted in the shell, and the rotary driving part is configured to drive the firing pin driving part to rotate and simultaneously drive the firing pin part to rotate along with the firing pin driving part. According to the utility model, the light guide rate of the light guide plate after point collision processing is effectively improved, and the energy consumption and the cost are reduced.

Description

A rotatable impact point device Technical Field

[0001] This utility model relates to a light guide plate production and processing equipment, and more particularly to a rotatable impact point device. Background Technology

[0002] A light guide plate is a component made of optical-grade acrylic or PC sheets. In order for the light guide plate to guide light properly, light guide points need to be set on the light guide plate. These light guide points can diffuse light at various angles, thereby transforming point light sources or line light sources into uniform surface light sources, achieving the set brightness and uniformity requirements.

[0003] There are several methods for creating conventional light guide points, among which, for impact point processing, impact point machines are mainly used. When impacting light guide plates, impact point machines typically achieve the impact point processing by striking the light guide plate with the target. However, existing impact point machines have the following shortcomings when processing light guide plates:

[0004] Because the contact angle between the striker and the light guide plate is uniform during impact, the microstructure at all impact points on the light guide plate is uniform. Since the LED light source position is fixed, there is a certain difference between the light emitted by the LED light source and the light reaching the microstructure at the impact point. Therefore, the light guideness of the microstructure at different impact points varies, resulting in lower light guideness and insufficient brightness and quality of the light emitted by the light guide plate. This necessitates a higher brightness requirement for the LED light to meet the product requirements, leading to higher costs, operating costs, and energy consumption for equipment using the corresponding light guide plate. Summary of the Invention

[0005] The purpose of this invention is to provide a rotatable impact point device, which can improve the light guide efficiency of the light guide plate.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a rotatable impact device, comprising a housing, an impact pin component, a rotary drive unit, and an impact pin drive unit. The upper part of the impact pin drive unit is rotatably mounted inside the housing. The top of the impact pin component is connected to the bottom of the impact pin drive unit. An impact pin is provided at the bottom of the impact pin component and is disposed below the housing. The impact pin drive unit is configured to drive the impact pin component to move up and down. The rotary drive unit is mounted on the top of the housing or inside the housing. The rotary drive unit is configured to drive the impact pin drive unit to rotate and simultaneously drive the impact pin component to rotate as well.

[0007] In the above technical solution, the rotary drive unit is disposed above the firing pin drive unit, the rotary drive unit includes a motor, and the working end of the bottom of the motor is connected to the top of the firing pin drive unit;

[0008] And / or, the working end at the bottom of the motor is connected to the top of the striker drive unit via a coupling.

[0009] In the above technical solution, a rotation limiting block is provided on the outer surface of the working end of the rotary drive unit, and a rotation fixing block matching the rotation limiting block is provided on the housing. The rotation limiting block and the rotation fixing block limit the rotation angle of the working end of the rotary drive unit.

[0010] And / or, the rotary fixing block and the rotary limiting block are disposed on the same plane.

[0011] In the above technical solution, the firing pin drive unit includes a piezoelectric actuator, the top of which is connected to the working end of the rotary drive unit, and the top of the firing pin component is connected to the working end of the bottom of the piezoelectric actuator.

[0012] In the above technical solution, the firing pin component includes a flexible buffer mechanism and the firing pin, and the firing pin is connected to the bottom of the firing pin drive unit via the flexible buffer mechanism.

[0013] In the above technical solution, the flexible buffer mechanism includes a connecting body, an upper magnet, a lower magnet, and a tool fixing rod. The top of the connecting body is connected to the firing pin drive unit. The upper magnet is mounted on the connecting body, the lower magnet is mounted on the tool fixing rod, and the top of the firing pin is connected to the bottom of the tool fixing rod.

[0014] The top of the tool fixing rod is axially movable to the connecting body, and the upper magnet is positioned directly above the lower magnet.

[0015] In the above technical solution, the upper magnet pushes the lower magnet and the tool fixing rod to move downward.

[0016] In the above technical solution, the upper magnet is mounted on the connecting body via a magnet adjusting component, and the magnet adjusting component is mounted on the connecting body in an axially adjustable manner.

[0017] In the above technical solution, the housing is provided with a proximity switch, and the striker drive part or striker component is provided with a proximity switch lever that matches the proximity switch.

[0018] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0019] 1. The present invention is provided with a rotary drive unit, which drives the impact pin component to rotate. In this way, when impacting the light guide plate, the impact pin can impact the light guide plate at any angle, making the light guide plate microstructure at the impact point more transparent. This reduces the light guide plate's requirements for LED brightness and reduces the energy consumption and cost of the equipment.

[0020] 2. This utility model also includes a rotation limit block and a rotation fixing block, which can limit the rotation angle of the firing pin component and prevent damage to the internal circuits, air circuits, etc. caused by 360-degree rotation. Attached Figure Description

[0021] Figure 1 is a cross-sectional view of the structure in Embodiment 1 of this utility model (the firing pin drive part is not shown in cross-section);

[0022] Figure 2 is a cross-sectional structural schematic diagram of the firing pin drive part in Embodiment 1 of this utility model;

[0023] Figure 3 is a cross-sectional structural schematic diagram of the flexible buffer mechanism in Embodiment 1 of this utility model;

[0024] Figure 4 is a partial cross-sectional view of the end face of the rotating fixing block and the rotating limiting block in Embodiment 1 of this utility model.

[0025] The components include: 1. Housing; 11. Coupling; 12. Bearing; 13. Rotary fixing block; 14. Proximity switch; 15. Proximity switch lever;

[0026] 2. Strike pin assembly; 21. Strike pin; 22. Flexible buffer mechanism; 220. Connecting body; 221. Upper magnet; 222. Lower magnet; 223. Tool fixing rod; 224. Magnet adjusting component; 225. Lower magnet mounting component;

[0027] 3. Rotary drive unit; 31. Rotation limit block;

[0028] 4. Strike pin drive unit; 41. Piezoelectric housing; 42. Piezoelectric ceramic; 43. Output rod; 44. Upper disc spring; 45. Lower disc spring; 46. Annular protrusion; 47. Air inlet; 48. Air outlet. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0030] Example 1: Referring to Figures 1-4, a rotatable impact device includes a housing 1, an impact pin component 2, a rotation drive unit 3, and an impact pin drive unit 4. The impact pin drive unit 4 is rotatably mounted inside the housing 1. The top of the impact pin component 2 is connected to the bottom of the impact pin drive unit 4. An impact pin 21 is provided at the bottom of the impact pin component 2 and is located below the housing 1. The impact pin drive unit 4 is configured to drive the impact pin component 2 to move up and down. The rotation drive unit 3 is mounted on the top of the housing 1 or inside the housing 1. The rotation drive unit 3 is configured to drive the impact pin drive unit 4 to rotate and simultaneously drive the impact pin component 2 to rotate as well.

[0031] In this embodiment, the striker driving unit can drive the striker component to move back and forth up and down. The bottom of the striker is used to contact the light guide plate, thereby realizing the impact action of the light guide plate. The striker is an irregular cylindrical structure, or the tip of the striker is an irregular or asymmetrical conical or cylindrical structure. Therefore, in conventional structures, since the angle of the striker does not change, the microstructure at all impact points on the light guide plate is the same, resulting in low light guide efficiency at the impact points. To ensure that the device using this light guide plate meets brightness requirements, the required brightness of the LEDs, etc., is higher, thus requiring higher power, increasing the cost of use, and raising the manufacturing cost. In this embodiment, a rotation drive unit is also provided. The rotation drive unit can drive the striker drive unit to rotate. When the striker drive unit rotates, it can simultaneously drive the striker component and the striker to rotate, thereby adjusting the angle of the striker. This can adjust the microstructure at the impact point between the striker and the light guide plate. Thus, before impacting the light guide plate, the rotation drive unit can drive the striker to rotate to a predetermined angle before impacting the light guide plate. Therefore, the microstructure of the light guide plate at the impact point is different, and the microstructure of all impact points on the light guide plate will not be completely the same. This can effectively improve the utilization rate of the light source at the impact point, thereby improving the light output brightness and quality of the microstructure at the impact point of the light guide plate, reducing the brightness requirements of the LED in the light source, reducing energy consumption, and reducing the cost of use.

[0032] In this embodiment, after the collider strikes the light guide plate, the microstructure at the strike point can reflect and diffuse the light emitted by the LED. Since the position of the LED light source is fixed, there is a certain difference between the light emitted by the LED light source and the light at the microstructure at the strike point. Therefore, in this embodiment, different microstructures at the strike point can be designed for the light at the strike point covered by the LED light source. By using the collider and the light guide plate rotated at different angles to strike the point, the light at that point can be precisely controlled to ensure that each pixel can receive sufficient light supply, thereby improving its light guide efficiency.

[0033] Referring to Figure 1, the rotary drive unit 3 is disposed above the firing pin drive unit 4. The rotary drive unit 3 includes a motor, and the working end of the bottom of the motor is connected to the top of the firing pin drive unit 4.

[0034] The working end at the bottom of the motor is connected to the top of the firing pin drive unit 4 via a coupling 11.

[0035] In this embodiment, the rotary drive unit is mounted on the top of the housing. The working end (output shaft of the motor) at the bottom of the rotary drive unit is connected to the top of the impact pin drive unit via a coupling. The motor can drive the impact pin drive unit to rotate to any angle. A bearing 12 is also provided between the impact pin drive unit and the housing to ensure stable and smooth rotation of the impact pin drive unit and the housing. The bearing can be a ball bearing, roller bearing, air bearing, or other components capable of supporting mechanical rotation.

[0036] Referring to Figures 1 and 4, a rotation limiting block 31 is provided on the outer surface of the working end of the rotary drive unit 3, and a rotation fixing block 13 matching the rotation limiting block 31 is provided on the housing 1. The rotation limiting block 31 and the rotation fixing block 13 limit the rotation angle of the working end of the rotary drive unit 3.

[0037] The rotary fixing block 13 and the rotary limiting block 31 are disposed on the same plane. The rotary fixing block is disposed on the housing at the outer edge of the working end of the rotary drive unit, with its side facing the rotary limiting block.

[0038] The rotary limiting block and rotary fixing block are designed so that when the rotary drive unit drives the striker drive unit to rotate, the rotary limiting block will rotate accordingly. Therefore, after rotating to a certain angle, it will be limited by one side of the rotary fixing block. Similarly, after the rotary drive unit drives the striker drive unit to rotate in the opposite direction to a certain angle, it will be limited by the other side of the rotary fixing block. Thus, the rotary fixing block and rotary limiting block prevent the striker drive unit from rotating another 360°, thereby preventing damage to wiring and / or air passages not directly connected to the striker. Taking a constant width for the rotary limiting block as an example, the width of the rotary fixing block (preferably a fan-shaped structure) limits the rotation angle of the striker drive unit. A larger width of the rotary fixing block results in a smaller rotation angle for the striker drive unit, and a smaller width results in a larger rotation angle. The appropriate width can be selected based on the actual situation.

[0039] In this embodiment, the impact pin driving unit 4 includes a piezoelectric actuator. The top of the piezoelectric actuator is connected to the working end of the rotary driving unit 3, and the top of the impact pin component 2 is connected to the working end of the bottom of the piezoelectric actuator. The piezoelectric actuator can drive its working end to move up and down at a high frequency, thereby driving the impact pin component to move up and down, achieving impact with the light guide plate. Of course, the impact pin driving unit may also not use a piezoelectric actuator, but other structures that can drive the impact pin component to move up and down, such as a combination of a motor and a cam mechanism, a cylinder, or other structures.

[0040] Referring to Figure 2, in this embodiment, the piezoelectric actuator includes a piezoelectric housing 41, a piezoelectric ceramic 42 installed inside the piezoelectric housing 41, an output rod 43, an upper disc spring 44, and a lower disc spring 45. The piezoelectric housing 41 is rotatably connected to the housing 1 via a bearing 12. The bottom of the piezoelectric ceramic 42 is connected to the top of the output rod 43. The bottom of the output rod 43 passes through the bottom of the piezoelectric housing 41 and is connected to the top of the striker component 2. An annular protrusion 46 is provided on the outer surface of the output rod. The upper disc spring 44 and the lower disc spring 45 are sleeved on the output rod 43 below the annular protrusion 46. The piezoelectric housing has a chamber. The top of the upper disc spring abuts against the bottom surface of the annular protrusion, and the bottom of the lower disc spring abuts against the bottom surface of the chamber. The upper and lower disc springs provide an upward thrust to the output rod. When the piezoelectric ceramic is working, it pushes the output rod downward, compressing the upper and lower disc springs, thereby pushing the striker component downward. When the piezoelectric ceramic is not working, the restoring force of the upper and lower disc springs will push the output rod and the piezoelectric ceramic to rise and reset, thereby driving the striker component to move upward and reset.

[0041] Furthermore, an air inlet 47 and an air outlet 48 are provided on the piezoelectric housing 41 to communicate with the chamber. The air inlet and air outlet are respectively connected to the top and bottom of the chamber. The air inlet and air outlet are respectively connected to pipelines to provide air to the chamber, which can cool down the components inside the piezoelectric actuator and extend its service life.

[0042] Referring to Figures 1 and 3, the impact pin component 2 includes a flexible buffer mechanism 22 and the impact pin 21, and the impact pin 21 is connected to the bottom of the impact pin drive unit 4 via the flexible buffer mechanism 22.

[0043] The flexible buffer mechanism prevents hard contact between the impact pin and the light guide plate when they collide, thus buffering the impact and preventing damage to the impact pin, while also improving the stability of the processing.

[0044] Referring to Figure 3, the flexible buffer mechanism includes a connecting body 220, an upper magnet 221, a lower magnet 222, and a tool fixing rod 223. The top of the connecting body 220 is connected to the firing pin drive unit 4. The upper magnet 221 is mounted on the connecting body 220, the lower magnet 222 is mounted on the tool fixing rod 223, and the top of the firing pin 21 is connected to the bottom of the tool fixing rod 223.

[0045] The top of the tool fixing rod 223 is axially movable to the connecting body 220, and the upper magnet 221 is positioned directly above the lower magnet 222. The upper magnet 221 pushes the lower magnet 222 and the tool fixing rod 223 downwards.

[0046] In this embodiment, the top of the connecting body and the bottom of the output rod are connected. When the output rod moves up and down, it will drive the connecting body to move down. During this process, since the tool fixing rod and the connecting body are axially connected (sliding connection), the upper magnet and the lower magnet are repulsive structures (the same magnetic poles are set opposite each other, for example, the bottom of the upper magnet is the S pole and the top of the lower magnet is the S pole). The upper magnet will exert a downward pushing force on the lower magnet, so that when the connecting body and the upper magnet move down, they will push the lower magnet, the tool fixing rod, and the impact pin down together through the repulsive force to impact. During the point action, after the firing pin contacts the light guide plate, the light guide plate applies a reverse force to the firing pin. This reverse force is then transmitted to the firing pin and the tool fixing rod. The repulsive force between the upper and lower magnets provides some buffering, causing the firing pin, tool fixing rod, and lower magnet to move upwards a portion until the repulsive force between the upper and lower magnets prevents the tool fixing rod from moving further upwards. This buffering effect after the firing pin contacts the light guide plate prevents rigid contact between the firing pin and the light guide plate, thus preventing damage to both.

[0047] The tool holder has an annular groove on its top outer surface. A limiting member, inserted into the annular groove, is located on the connecting body. The thickness of the limiting member is less than the length of the annular groove. Therefore, the tool holder can move up and down relative to the connecting body, but the movement distance is limited by the annular groove and the limiting member, thus serving a limiting function. Alternatively, other limiting structures can be used to prevent the tool holder from falling off the connecting body or from moving excessively upwards. The tool holder cannot rotate circumferentially relative to the connecting body; this can be achieved using splines and spline grooves.

[0048] Referring to Figure 3, the upper magnet 221 is mounted on the connecting body 220 via the magnet adjusting member 224, and the magnet adjusting member 224 is mounted on the connecting body 220 in an axially adjustable manner.

[0049] The use of a magnet adjustment mechanism allows for adjustment of the distance between the upper magnet and the top or bottom surface of the connecting body. Specifically, it adjusts the distance between the upper and lower magnets when the tool fixing rod is at its lowest position. A greater distance between the upper and lower magnets results in a smaller repulsive force exerted by the upper magnet on the lower magnet, and vice versa. Since the downward distance of the output rod is fixed, this allows for adjustment of the impact force exerted on the light guide plate by the impact pin and the light guide plate, and thus the depth of the impact point, based on the distance between the upper and lower magnets (the magnitude of the initial repulsive force).

[0050] In this embodiment, the magnet adjusting component can be screwed onto the outer surface of the connecting body. By rotating the magnet connecting component, the distance between the magnet adjusting component and the top or bottom surface of the connecting body can be adjusted, achieving rapid adjustment of the upper magnet position. In this embodiment, a lower magnet mounting component 225 is installed on the outer surface of the tool fixing rod 223, and the lower magnet is installed on the outer surface of the lower magnet mounting component. Both the upper and lower magnets adopt a square or ring-shaped structure, so that the upper magnet provides a uniform downward repulsive force to the lower magnet in the circumferential direction, ensuring that the tool fixing rod is subjected to uniform force in the circumferential direction, making it more stable and smooth when moving up and down along the connecting body, without any jamming.

[0051] Of course, the flexible buffer mechanism can also be other structures with buffering function, such as using rubber for buffering or springs for buffering. For example, if spring buffering is used, there is no need to use upper and lower magnets. A spring can be directly fitted on the tool fixing rod. A protrusion is provided on the outer surface of the tool fixing rod. The bottom of the spring abuts against the top surface of the protrusion, and the top of the spring abuts against the bottom surface of the connecting body. Buffering is achieved through the spring. Alternatively, the protrusion can be set in other positions, and the spring can be adjusted accordingly. The spring can provide a downward pushing force to the tool fixing rod, thereby playing a buffering role at the impact point.

[0052] Referring to Figure 1, a proximity switch 14 is provided on the housing 1, and a proximity switch lever 15 matching the proximity switch 14 is provided on the striker drive unit 4 or the striker component 2. In this embodiment, the proximity switch lever is installed on the side wall below the striker drive unit.

[0053] The proximity switch lever and the proximity switch are primarily designed to facilitate the return of the impact point drive unit to the zero position upon startup, ensuring the correct position is found during the next machining operation (the rotary drive unit rotates the impact point drive unit to the predetermined position). When the rotary drive unit drives the impact point drive unit to rotate, if the proximity switch lever rotates to a position directly below the proximity switch, the proximity switch will detect this and send data back to the rotary drive unit. At this point, the unit will rotate to the zero position, which is equivalent to the initial position, facilitating precise control of the impact pin to the predetermined position later.

[0054] In the description of this utility model, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying 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, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of the invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0055] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. For instance, the two components can be mechanically connected by contact or abutting; they can also be directly hooked or connected by an intermediate medium; or they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

Claims

1. A rotatable impact point device, characterized in that: The device includes a housing, a firing pin assembly, a rotary drive unit, and a firing pin drive unit. The firing pin drive unit is rotatably mounted inside the housing. The top of the firing pin assembly is connected to the bottom of the firing pin drive unit, and a firing pin is provided at the bottom of the firing pin assembly. The firing pin is located below the housing. The firing pin drive unit is configured to drive the firing pin assembly to move up and down. The rotary drive unit is mounted on the top of the housing or inside the housing. The rotary drive unit is configured to drive the firing pin drive unit to rotate and simultaneously drive the firing pin assembly to rotate.

2. The rotatable impact point device according to claim 1, characterized in that: The rotary drive unit is disposed above the firing pin drive unit. The rotary drive unit includes a motor, and the working end of the bottom of the motor is connected to the top of the firing pin drive unit; and / or, the working end of the bottom of the motor is connected to the top of the firing pin drive unit via a coupling.

3. The rotatable impact point device according to claim 1, characterized in that: A rotation limiting block is provided on the outer surface of the working end of the rotary drive unit, and a rotation fixing block matching the rotation limiting block is provided on the housing. The rotation limiting block and the rotation fixing block limit the rotation angle of the working end of the rotary drive unit; and / or, the rotation fixing block and the rotation limiting block are disposed on the same plane.

4. The rotatable impact point device according to claim 1, characterized in that: The firing pin drive unit includes a piezoelectric actuator, the top of which is connected to the working end of the rotary drive unit, and the top of the firing pin component is connected to the working end of the bottom of the piezoelectric actuator.

5. The rotatable impact point device according to claim 1, characterized in that: The firing pin component includes a flexible buffer mechanism and the firing pin, wherein the firing pin is connected to the bottom of the firing pin drive unit via the flexible buffer mechanism.

6. The rotatable impact point device according to claim 5, characterized in that: The flexible buffer mechanism includes a connecting body, an upper magnet, a lower magnet, and a tool fixing rod. The top of the connecting body is connected to the firing pin drive unit. The upper magnet is mounted on the connecting body, and the lower magnet is mounted on the tool fixing rod. The top of the firing pin is connected to the bottom of the tool fixing rod. The top of the tool fixing rod is axially movable to the connecting body, and the upper magnet is positioned directly above the lower magnet.

7. The rotatable impact point device according to claim 6, characterized in that: The upper magnet pushes the lower magnet and the tool fixing rod to move downwards.

8. The rotatable impact point device according to claim 6, characterized in that: The upper magnet is mounted on the connecting body via a magnet adjusting component, which is axially adjustable.

9. The rotatable impact point device according to claim 1, characterized in that: The housing is provided with a proximity switch, and the striker drive part or striker component is provided with a proximity switch lever that matches the proximity switch.

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