High-precision positioning clamp structure for special-shaped cutting of OCA (Optical Clear Adhesive)

Abstract

The utility model relates to the field of OCA positioning clamps, and discloses an OCA special-shaped cutting high-precision positioning clamp structure which comprises a supporting base, a leveling mechanism and a fixing mechanism are arranged on the supporting base, the leveling mechanism comprises a screw rod, the two ends of the screw rod are rotationally connected to the outer wall of the supporting base respectively, and the fixing mechanism is arranged on the supporting base. A limiting rod is fixedly connected to the outer wall of the supporting base, a translation frame is in threaded connection with the outer wall of the screw, an electric push rod is fixedly connected to the top of the translation frame, and a supporting frame is fixedly connected to the bottom end of an inner rod of the electric push rod. According to the device, the leveling mechanism is arranged, so that the leveled OCA can be in tight and uniform contact with the surface of the material placing plate, the situation that a laser focus point is difficult to keep stable due to the uneven surface of the OCA is avoided, the internal stress of the OCA is uniformly distributed due to shaking, and the situation that an adhesive layer slightly deforms in the laser cutting process due to the uneven internal stress is avoided; therefore, the stability of a cutting path is ensured.

Description

Technical Field

[0001] This utility model relates to the field of OCA adhesive positioning fixtures, and in particular to a high-precision positioning fixture structure for irregularly shaped OCA adhesive cutting. Background Technology

[0002] OCA adhesive positioning fixture is a device used to precisely position and fix OCA adhesive (optically transparent adhesive) during processing.

[0003] When using lasers to cut irregular shapes with OCA adhesive, the initial step involves precisely drawing the cutting path using specialized design software based on the desired shape. Simultaneously, the OCA adhesive is placed on a high-precision positioning fixture, which is then used to flatten and stably fix it, laying the foundation for accurate cutting. During the cutting process, parameters such as the laser equipment's power, pulse frequency, spot size, and cutting speed are adjusted according to the material characteristics of the OCA adhesive and the required cutting precision. After starting the equipment, the laser beam scans and cuts along the preset path, achieving separation through high-energy-density melting, vaporization, or sublimation of the material. The laser head moves precisely throughout the process, and a real-time monitoring system feeds cutting information back to the control system for timely error correction.

[0004] When laser cutting OCA adhesive into irregular shapes, it is difficult to ensure the flatness of the OCA adhesive on the placement plate when it is placed manually. The uneven surface of the OCA adhesive will make it difficult to stabilize the focal point during laser cutting, which will seriously affect the cutting accuracy. To solve this problem, a high-precision positioning fixture structure for cutting OCA adhesive into irregular shapes is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a high-precision positioning fixture structure for OCA adhesive irregular cutting, which aims to solve the problem that uneven placement of OCA adhesive in the prior art leads to unstable focal point during laser cutting, resulting in low cutting accuracy.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a high-precision positioning fixture structure for OCA adhesive irregular cutting, comprising a support base, on which a leveling mechanism and a fixing mechanism are provided. The leveling mechanism includes a screw, with both ends of the screw rotatably connected to the outer wall of the support base. A limit rod is fixedly connected to the outer wall of the support base. A translation frame is threadedly connected to the outer wall of the screw. An electric push rod is fixedly connected to the top of the translation frame. A support frame is fixedly connected to the bottom end of the inner rod of the electric push rod. A groove is provided on the inner wall of the support frame. A lifting block is slidably connected to the inner wall of the groove. A rotating rod is rotatably connected to the inner wall of the lifting block. A leveling roller is fixedly connected to the side wall of the rotating rod. A protrusion is also fixedly connected to the outer wall of the rotating rod. A spring is fixedly connected to the top of the inner wall of the groove. The bottom end of the spring is fixedly connected to the top of the lifting block.

[0007] As a further description of the above technical solution:

[0008] The leveling mechanism also includes a motor, the outer wall of which is fixedly connected to the left side of the support base, and the output end of the motor is fixedly connected to the left end of the screw.

[0009] As a further description of the above technical solution:

[0010] The fixing mechanism includes a support frame, the bottom of which is fixedly connected to the top of the support base.

[0011] As a further description of the above technical solution:

[0012] The fixing mechanism also includes a support rod, the outer wall of which is slidably connected to the inner wall of the support frame.

[0013] As a further description of the above technical solution:

[0014] The fixing mechanism also includes a pressure plate, the top of which is fixedly connected to the bottom of the support rod.

[0015] As a further description of the above technical solution:

[0016] The fixing mechanism also includes a second spring, the top end of which is fixedly connected to the top of the inner wall of the support frame, and the bottom end of which is fixedly connected to the outer wall of the support rod.

[0017] As a further description of the above technical solution:

[0018] The fixing mechanism also includes a connecting plate, the bottom of which is fixedly connected to the top of the support rod.

[0019] As a further description of the above technical solution:

[0020] The fixing mechanism also includes a pull rod, the outer wall of which is hinged to the outer wall of the connecting plate, and a material placement plate is inserted into the inner wall of the support base.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, by setting a leveling mechanism, the leveled OCA adhesive can make close and uniform contact with the surface of the material plate, avoiding the uneven OCA adhesive surface from causing the laser focus point to be difficult to maintain stability. The vibration promotes the uniform distribution of internal stress in the OCA adhesive, avoiding the adhesive layer from undergoing slight deformation during laser cutting due to uneven internal stress, thereby ensuring the stability of the cutting path.

[0023] 2. In this utility model, by setting a fixing mechanism, the precise positioning and clamping ensures that the OCA adhesive always maintains a fixed position during the laser cutting process, and the cutting position will not be deviated due to the displacement of the adhesive material. For the cutting of fine irregular patterns, it can strictly guarantee the dimensional accuracy of each part, so that the cut OCA adhesive is highly consistent with the design size, and meets the production requirements of high-precision products. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the main structure of a high-precision positioning fixture for OCA adhesive irregular cutting proposed in this utility model;

[0025] Figure 2 This is a schematic diagram of the fixing mechanism of a high-precision positioning fixture for OCA adhesive irregular cutting proposed in this utility model;

[0026] Figure 3 This is a partial structural diagram of the leveling mechanism of a high-precision positioning fixture structure for OCA adhesive irregular cutting proposed in this utility model;

[0027] Figure 4 This is a partial cross-sectional schematic diagram of the support frame of the OCA adhesive irregular shape cutting high-precision positioning fixture structure proposed in this utility model.

[0028] Legend:

[0029] 1. Support base; 2. Leveling mechanism; 211. Screw; 212. Limiting rod; 213. Translation frame; 214. Electric push rod; 215. Support frame; 216. Groove; 217. Lifting block; 218. Rotating rod; 219. Leveling roller; 220. Protrusion; 221. Spring 1; 222. Motor; 3. Fixing mechanism; 311. Support frame; 312. Support rod; 313. Pressure plate; 314. Spring 2; 315. Connecting plate; 316. Pull rod; 317. Material placement plate. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figure 1 , Figure 3 , Figure 4This utility model provides an embodiment of a high-precision positioning fixture structure for OCA adhesive irregular cutting, including a support base 1. The support base 1 serves as the basic support component of the entire fixture structure. A leveling mechanism 2 and a fixing mechanism 3 are provided on the support base 1. The leveling mechanism 2 includes a screw 211, which serves as a transmission component. By rotating, it can drive a translation frame 213 to move on its outer wall, achieving horizontal position adjustment. Both ends of the screw 211 are rotatably connected to the outer wall of the support base 1. A limiting rod 212 is fixedly connected, which restricts the movement trajectory of the translation frame 213, allowing it to move only in a straight line along the direction of the limiting rod 212. The translation frame 213 is threadedly connected to the outer wall of the screw 211, and the translation frame 213 achieves precise horizontal displacement under the drive of the screw 211. An electric actuator 214 is fixedly connected to the top of the translation frame 213, and a support frame 215 is fixedly connected to the bottom of the inner rod of the electric actuator 214. The support frame 215 is used to support and install the lifting block 217, the rotating rod 218, and the leveling roller. Components such as cylinder 219 include a support frame 215 with a groove 216 on its inner wall. The groove 216 guides the vertical sliding of the lifting block 217. The lifting block 217 is slidably connected to the inner wall of the groove 216. The lifting block 217 slides up and down within the groove 216, cooperating with the rotating rod 218, the protrusion 220, and the spring 221 to achieve the intermittent shaking function of the leveling roller 219. The rotating rod 218 is rotatably connected to the inner wall of the lifting block 217. The rotating rod 218 can rotate freely within the lifting block 217, driving the fixed connection thereto. The leveling roller 219 rotates, and the leveling roller 219 is fixedly connected to the side wall of the rotating rod 218. During the rotation, the leveling roller 219 rolls and flattens the OCA glue placed on the material plate 317. The outer wall of the rotating rod 218 is also fixedly connected to the protrusion 220. The top of the inner wall of the groove 216 is fixedly connected to the spring 221. The spring 221, as an elastic element, works in conjunction with the squeezing action of the protrusion 220 to achieve intermittent shaking of the leveling roller 219. The bottom end of the spring 221 is fixedly connected to the top of the lifting block 217.

[0032] Reference Figure 1 , Figure 3 , Figure 4 The leveling mechanism 2 also includes a motor 222, which serves as a power source to provide driving force for the rotation of the screw 211. The outer wall of the motor 222 is fixedly connected to the left side of the support base 1, and the output end of the motor 222 is fixedly connected to the left end of the screw 211, transmitting the rotational power of the motor 222 to the screw 211. The fixing mechanism 3 includes a support frame 311, the bottom of which is fixedly connected to the top of the support base 1. The fixing mechanism 3 also includes a support rod 312, which slides on the inner wall of the support frame 311. By moving up and down, the support rod 312 drives the pressure plate 313 to perform clamping and releasing operations on the OCA adhesive. The outer wall of the support rod 312 is slidably connected to the inner wall of the support frame 311.

[0033] Reference Figures 1-3 The fixing mechanism 3 also includes a pressure plate 313, which moves under the drive of the support rod 312. The pressure plate 313 uses the elastic force of the second spring 314 to press and fix the two ends of the OCA adhesive placed on the placement plate 317. The top of the pressure plate 313 is fixedly connected to the bottom of the support rod 312. The fixing mechanism 3 also includes a second spring 314, which provides elastic force. When the support rod 312 moves upward, the second spring 314 is compressed, storing elastic potential energy. When the pull rod 316 is released, the second spring 314 releases its elastic potential energy, pushing the support rod 312 and the pressure plate 313 downward to clamp the OCA adhesive. The top of the second spring 314 is fixedly connected to the top of the inner wall of the support frame 311. The bottom end of the spring 314 is fixedly connected to the outer wall of the support rod 312. The fixing mechanism 3 also includes a connecting plate 315, which serves as a connector. The bottom of the connecting plate 315 is fixedly connected to the top of the support rod 312. The fixing mechanism 3 also includes a pull rod 316. By pulling the pull rod 316, the operator can drive the connecting plate 315 and the support rod 312 to move upward, causing the pressure plate 313 to release its grip on the OCA adhesive. The outer wall of the pull rod 316 is hinged to the outer wall of the connecting plate 315. A material placement plate 317 is inserted into the inner wall of the support base 1. The material placement plate 317 is used to place the OCA adhesive to be cut and can be easily inserted into the support base 1. It works with the fixing mechanism 3 to achieve the positioning and fixing of the OCA adhesive.

[0034] Working principle: When cutting OCA adhesive into irregular shapes, the support base 1 is placed on the laser cutting worktable, and the OCA adhesive is placed on the placement plate 317. Then, the placement plate 317 is inserted into the inner wall of the support base 1. During insertion, the pull rod 316 is pulled upward, causing the connecting plate 315 to rise. The connecting plate 315 drives the pressure plate 313 to rise through the support rod 312, which compresses the second spring 314. After the placement plate 317 is fully inserted into the support base 1, the pull rod 316 is released. Under the rebound force of the second spring 314, the pressure plate 313 clamps and fixes both ends of the OCA adhesive to facilitate subsequent laser cutting into irregular shapes.

[0035] Then, by starting the motor 222, the output end of the motor 222 drives the fixedly connected screw 211 to rotate. Under the limiting action of the limiting rod 212, the translation frame 213 is moved, positioning the leveling roller 219 above the OCA adhesive. Then, by starting the electric push rod 214, the inner rod of the electric push rod 214 pushes the support frame 215 to descend, causing the support frame 215 to bring the leveling roller 219 into contact with the OCA adhesive. Under the translation action of the translation frame 213, the leveling roller 219 rolls, leveling the OCA adhesive. The leveled OCA adhesive is then combined with the material... The surface of plate 317 can make close and uniform contact, avoiding the uneven surface of OCA adhesive which would make it difficult to maintain the stability of the laser focus point. When the leveling roller 219 rotates, the protrusion 220 fixedly connected to the outer wall of the rotating rod 218 rotates. The rotating protrusion 220 can drive the lifting block 217 and the rotating rod 218 to indirectly squeeze the spring 221 in the inner wall of the groove 216, so that the leveling roller 219 can vibrate intermittently when rotating. The vibration promotes the uniform distribution of internal stress of OCA adhesive, avoiding the slight deformation of the adhesive layer during laser cutting due to uneven internal stress, thereby ensuring the stability of the cutting path.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A high-precision positioning fixture structure for cutting irregular shapes of OCA adhesive, comprising a support base (1), characterized in that: The support base (1) is provided with a leveling mechanism (2) and a fixing mechanism (3); The leveling mechanism (2) includes a screw (211), with both ends of the screw (211) rotatably connected to the outer wall of the support base (1). A limit rod (212) is fixedly connected to the outer wall of the support base (1). A translation frame (213) is threadedly connected to the outer wall of the screw (211). An electric push rod (214) is fixedly connected to the top of the translation frame (213). A support frame (215) is fixedly connected to the bottom end of the inner rod of the electric push rod (214). An opening is formed in the inner wall of the support frame (215). There is a groove (216), and a lifting block (217) is slidably connected to the inner wall of the groove (216). A rotating rod (218) is rotatably connected to the inner wall of the lifting block (217). A leveling roller (219) is fixedly connected to the side wall of the rotating rod (218). A protrusion (220) is also fixedly connected to the outer wall of the rotating rod (218). A spring (221) is fixedly connected to the top of the inner wall of the groove (216). The bottom end of the spring (221) is fixedly connected to the top of the lifting block (217).

2. The high-precision positioning fixture structure for OCA adhesive irregular cutting according to claim 1, characterized in that: The leveling mechanism (2) also includes a motor (222), the outer wall of which is fixedly connected to the left side of the support base (1), and the output end of the motor (222) is fixedly connected to the left end of the screw (211).

3. The high-precision positioning fixture structure for OCA adhesive irregular cutting according to claim 1, characterized in that: The fixing mechanism (3) includes a support frame (311), the bottom of which is fixedly connected to the top of the support base (1).

4. The high-precision positioning fixture structure for OCA adhesive irregular cutting according to claim 1, characterized in that: The fixing mechanism (3) also includes a support rod (312), the outer wall of which is slidably connected to the inner wall of the support frame (311).

5. The high-precision positioning fixture structure for OCA adhesive irregular cutting according to claim 1, characterized in that: The fixing mechanism (3) also includes a pressure plate (313), the top of which is fixedly connected to the bottom of the support rod (312).

6. The high-precision positioning fixture structure for OCA adhesive irregular cutting according to claim 1, characterized in that: The fixing mechanism (3) also includes a second spring (314), the top end of which is fixedly connected to the top of the inner wall of the support frame (311), and the bottom end of which is fixedly connected to the outer wall of the support rod (312).

7. The high-precision positioning fixture structure for OCA adhesive irregular cutting according to claim 1, characterized in that: The fixing mechanism (3) also includes a connecting plate (315), the bottom of which is fixedly connected to the top of the support rod (312).

8. The high-precision positioning fixture structure for OCA adhesive irregular cutting according to claim 1, characterized in that: The fixing mechanism (3) also includes a pull rod (316), the outer wall of which is hinged to the outer wall of the connecting plate (315), and a material placement plate (317) is inserted into the inner wall of the support base (1).

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