A touch screen aluminum frame machining positioning jig

Abstract

The utility model discloses a kind of touch screen aluminum frame machining positioning fixture, belong to precision machining equipment technical field, including support column, hollow block and processing head, touch screen aluminum frame machining positioning fixture is also provided with storage bin, telescopic column, sliding rod one, sliding block, sliding rod two and positioning block, telescopic column is slid in storage bin to drive hollow block to realize lifting, sliding block is slid on sliding rod one, positioning block is slid on sliding rod two, common drive fixed on the processing head of positioning block realizes horizontal movement, touch screen aluminum frame machining positioning fixture also includes damping mechanism, damping mechanism is passed through setting shock pad, shock block, multistage connecting rod, sealed bin and sealing column.The utility model is through the cooperative work of positioning mechanism and damping mechanism, solved the problem of inaccurate positioning and vibration interference, realized the three-dimensional accurate positioning of processing head, effectively absorbed processing vibration simultaneously, significantly guaranteed the stability of processing process and the precision of product.

Description

Technical Field

[0001] This utility model relates to the field of precision machining equipment technology, and in particular to a positioning fixture for machining aluminum frames for touch screens. Background Technology

[0002] As a key appearance and structural component of consumer electronics products, the aluminum frame of the touch screen has high requirements for processing precision and surface quality. In the manufacturing process of the aluminum frame of the touch screen, machining positioning fixtures are required to fix and position the aluminum frame in order to cooperate with the machining head to complete processes such as drilling, cutting or grinding.

[0003] Existing machining positioning fixtures have relatively simple positioning mechanisms in some areas. The movement of the machining head is controlled manually or by a simple servo mechanism. This method makes it difficult to achieve rapid and accurate arrival at any point in three-dimensional space, resulting in insufficient positioning accuracy of the machining head. When machining aluminum frames with complex contours, this can cause product size deviations and affect the final assembly effect.

[0004] Furthermore, during the machining process, the contact between the machining head and the aluminum frame generates high-frequency vibrations. These vibrations are transmitted through the support structure of the fixture. The existing machining positioning fixtures lack a structure specifically designed to absorb and counteract such vibrations. The presence of these vibrations causes an instantaneous shift in the relative position between the machining head and the workpiece, directly reducing the surface finish and dimensional accuracy of the machined surface, and severely affecting product consistency and yield.

[0005] Therefore, this utility model proposes a positioning fixture for machining aluminum frames of touch screens to overcome the shortcomings of the prior art. Utility Model Content

[0006] In view of the problems of inaccurate positioning control of the machining head and the inability to effectively suppress vibrations generated during the machining process in the existing positioning fixtures for aluminum frame machining of touch screens, the present invention aims to provide a positioning fixture for aluminum frame machining of touch screens with an improved structure that can effectively solve the above problems.

[0007] This utility model provides a positioning fixture for machining aluminum frames for touch screens, including: a support column, a hollow block, a machining head, a storage compartment, a telescopic column, a first slide rod, a sliding block, a second slide rod, a positioning block, and a shock absorption mechanism.

[0008] The storage compartment is fixedly connected to the support column, and the telescopic column is slidably connected inside the storage compartment to drive the hollow block to achieve lifting and lowering.

[0009] Furthermore, the sliding block is slidably connected to the first slide rod, the positioning block is slidably connected to the second slide rod, and the processing head is fixedly connected to the positioning block to realize the horizontal movement of the processing head.

[0010] In addition, the shock absorption mechanism includes a shock absorption pad, a shock absorption block, a sealing chamber, and a sealing column, which are combined through a mechanical linkage mechanism. When the shock absorption pad receives vibration pressure, it can drive the shock absorption block and ultimately drive the sealing column to squeeze into the sealing chamber through the mechanical linkage mechanism.

[0011] Preferably, the touch screen aluminum frame machining positioning fixture further includes a support frame and a fixing block 1. The support frame is fixedly connected to both sides of the support column, and the fixing block 1 is used to connect the telescopic column and the hollow block.

[0012] Preferably, the touch screen aluminum frame machining positioning fixture further includes a control screen, which is fixedly connected above the hollow block and is used to control the movement of the telescopic column, the sliding block and the positioning block.

[0013] Preferably, the touch screen aluminum frame machining positioning fixture further includes a limiting block, the limiting block being fixedly connected to the inside periphery of the hollow block, and the slide rod being fixedly connected to both sides of the support column and the side of the limiting block.

[0014] Preferably, the shock absorption mechanism further includes a hollow shell, the shock absorption pad is slidably connected inside the hollow shell, and the shock absorption block is fixedly connected to the bottom of the shock absorption pad and the inner wall of the hollow shell.

[0015] Preferably, the mechanical linkage mechanism includes a second fixed block, a fixed column, a connecting rod, and a connecting column. The shock absorber is fixedly connected to the second fixed block, and the fixed column is fixedly connected to the second fixed block. The connecting rod is rotatably connected between the fixed column and the connecting column.

[0016] Preferably, the mechanical linkage mechanism further includes a limiting slider and a central block, the limiting slider being fixedly connected to the connecting column, and the limiting slider being slidably connected to the inner wall of the central block.

[0017] Preferably, the central block is fixedly connected to the outer wall of the sealed chamber.

[0018] Preferably, the sealing column is fixedly connected to the shock-absorbing block.

[0019] This utility model has the following beneficial effects: 1. This utility model solves the problems of inaccurate control of the machining head position and limited movement range of the existing positioning fixture by setting up a three-axis motion mechanism consisting of a telescopic column, two sets of mutually orthogonal sliding rods and sliders, and unified control by a control panel, thereby enabling the machining head to be quickly and accurately positioned in three-dimensional space.

[0020] 2. This utility model solves the problem in the prior art that processing vibration cannot be effectively absorbed, leading to a reduction in processing accuracy, by setting up a complex mechanical linkage vibration damping mechanism consisting of a damping pad, a damping block, a multi-stage connecting rod, a limiting slider, a sealing chamber, and a sealing column. It realizes the active absorption and dissipation of vibration energy during the processing, thereby ensuring the stability of the processing process and the high quality of the finished product. Attached Figure Description

[0021] Figure 1 This is a perspective view of the front side of the support column of a positioning fixture for machining an aluminum frame touch screen according to the present invention. Figure 2 This is a partial structural exploded view of the hollow block of a positioning fixture for machining an aluminum frame for a touch screen, as proposed in this utility model. Figure 3 This is a partial structural diagram of a fixing block for a positioning fixture used in machining aluminum frames for touch screens, as proposed in this utility model. Figure 4 This is a partial structural diagram of the central block of a positioning fixture for machining an aluminum frame touch screen, as proposed in this utility model.

[0022] Legend: 1. Support column; 2. Vibration damping mechanism; 201. Hollow shell; 202. Vibration damping pad; 203. Vibration damping block; 204. Fixing block two; 205. Fixing column; 206. Connecting rod; 207. Connecting column; 208. Limiting slider; 209. Center block; 210. Sealing chamber; 211. Sealing column; 3. Support frame; 4. Fixing block one; 5. Hollow block; 6. Control panel; 7. Storage chamber; 8. Telescopic column; 9. Limiting block; 10. Slide rod one; 11. Sliding block; 12. Slide rod two; 13. Positioning block; 14. Processing head. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0024] Example: Please refer to Figures 1 to 4This utility model embodiment provides a positioning fixture for machining aluminum frames of touch screens, including a support column 1. Support frames 3 for enhancing overall structural stability are fixedly connected to both sides of the support column 1. A storage compartment 7 is also fixedly connected to the support column 1. A telescopic column 8 capable of vertical lifting is slidably connected inside the storage compartment 7. A fixing block 4 is fixedly connected to the upper end of the telescopic column 8, and the fixing block 4 is fixedly connected to a hollow block 5. Thus, the extension or retraction of the telescopic column 8 can drive the hollow block 5 to rise or fall as a whole. A control screen 6 for issuing operation commands is also fixedly connected above the hollow block 5. Limiting blocks 9 are fixedly connected around the inside of the hollow block 5. The two ends of the slide rod 10 are fixedly connected to the side of the support column 1 and the limiting block 9, respectively. A sliding block 11 is slidably connected to the slide rod 10. A slide rod 2 12 is fixedly connected to the sliding block 11. The slide rod 2 12 is cross-connected to the positioning block 13, and the positioning block 13 is slidably connected to the slide rod 2 12. The processing head 14 is fixedly connected to the positioning block 13. By controlling the movement of the sliding block 11 on the slide rod 10 and the movement of the positioning block 13 on the slide rod 2 12, the processing head 14 can be driven to move precisely on the horizontal plane inside the hollow block 5.

[0025] The touch screen aluminum frame machining positioning fixture is also equipped with a shock absorption mechanism 2 for absorbing and offsetting vibrations generated during the machining process. The shock absorption mechanism 2 is connected to the bottom structure of the support column 1. The shock absorption mechanism 2 includes a hollow shell 201, a shock absorption pad 202, a shock absorption block 203, a fixing block 204, a fixing column 205, a connecting rod 206, a connecting column 207, a limit slider 208, a center block 209, a sealing chamber 210, and a sealing column 211. It can effectively absorb vibrations from the support column 1 and ensure high-precision positioning of the machining head 14 during operation.

[0026] Please refer to Figure 1 , Figure 3 and Figure 4 The positioning mechanism consists of a vertical lifting part and a horizontal moving part. The vertical lifting motion depends on the telescopic column 8, which is driven by an internal drive motor to slide up and down inside the storage compartment 7. Since the upper end of the telescopic column 8 is fixedly connected to the hollow block 5 through the fixed block 4, the movement of the telescopic column 8 is directly converted into the vertical lifting of the entire hollow block 5 processing platform, thereby adjusting the processing height of the processing head 14. The horizontal moving part is realized inside the hollow block 5 and consists of two sets of guide rail systems. The slide rod 10, which serves as the first guide rail, is fixedly connected at both ends to the support column 1 and the limiting block 9 set inside the hollow block 5, respectively, forming a stable guide rail base. The sliding block 11 is slidably sleeved on the slide rod 10 and can reciprocate in the length direction of the slide rod 10.

[0027] The second guide rail, slide bar 12, is fixedly connected at one end to slide block 11 and is arranged orthogonally to slide bar 10. Positioning block 13 is slidably sleeved on slide bar 12 and can reciprocate along the length of slide bar 12. The processing head 14 is firmly fixedly connected to positioning block 13. By controlling the movement of slide block 11 and positioning block 13 through control panel 6, the processing head 14 can move arbitrarily in the planar coordinate system formed by slide bar 10 and slide bar 12. Combined with the lifting and lowering of telescopic column 8, the processing head 14 is finally accurately positioned in three-dimensional space.

[0028] Please refer to Figure 1 and Figure 2 The hollow shell 201 of the shock absorption mechanism 2 serves as the base of the overall structure. The shock absorption pad 202 is fixedly connected to the lower end of the support column 1 and the support frame 3, and the outer periphery of the shock absorption pad 202 is slidably connected to the inner wall of the hollow shell 201. When the vibration generated by the processing head 14 is working is transmitted along the support column 1 to the shock absorption pad 202, the shock absorption pad 202 will be pressed and slide downward along the inner wall of the hollow shell 201. The bottom of the shock absorption pad 202 is fixedly connected to the shock absorption block 203, which is also fixedly connected to the inner wall of the hollow shell 201. The downward pressing action of the shock absorption pad 202 will squeeze the shock absorption block 203, thereby starting the subsequent linkage energy consumption process. Fixed blocks 204 are fixedly connected at the four corners of the shock absorption block 203, and fixed columns 205 and connecting rods 206 are fixedly connected to the fixed blocks 204. One end of the connecting rod 206 is rotatably connected to the fixed column 205, and the other end of the connecting rod 206 is rotatably connected to the connecting column 207. The connecting column 207 is fixedly connected to the limiting slider 208, which is slidably connected to the inner wall of the central block 209. The central block 209 is fixedly connected to the outer wall of the sealing chamber 210. One end of the sealing column 211 is fixedly connected to the shock absorber 203, and the other end is slidably fitted inside the sealing chamber 210. The entire linkage process is as follows: the shock absorber 203 is pressed, which drives the fixed block 204 and the fixed column 205 to move down. The connecting rod 206 pushes the connecting column 207, which in turn drives the limiting slider 208 to slide inside the central block 209. At the same time, the sealing column 211 is squeezed into the sealing chamber 210. This process absorbs vibration energy and ensures the stability and accuracy of the processing.

[0029] As a preferred embodiment, in order to further enhance the structural rigidity and stability of the entire device, support frames 3 are fixedly connected to both sides of the support column 1 by welding or bolting. The support frames 3 are triangular or L-shaped, with one end connected to the support column 1 and the other end connected to the base of the equipment, forming a stable support structure that effectively distributes the load and vibration generated by the equipment during operation. At the same time, the shock-absorbing pad 202 is not only fixedly connected to the support column 1, but also fixedly connected to the support frame 3, so that the vibration transmitted from above can be transmitted to the shock-absorbing mechanism 2 more evenly.

[0030] As a preferred embodiment, in order to achieve a reliable connection and transmission between the telescopic column 8 and the hollow block 5, the fixing block 4 has a plate-like structure, with its lower surface fixedly connected to the top of the telescopic column 8 and its upper surface fixedly connected to the bottom of the hollow block 5. As a rigid connecting member, the fixing block 4 ensures that the lifting and lowering movement of the telescopic column 8 can be transmitted to the hollow block 5 without loss and stably.

[0031] In a preferred embodiment, in order to achieve automated control of the entire processing process, a control screen 6 is fixedly connected to an easily accessible position on the upper surface of the hollow block 5. The control screen 6 is a touch-screen industrial display screen, which integrates a control system and is electrically connected to the motor that drives the telescopic column 8, the sliding block 11 and the positioning block 13. The operator can input the processing program and parameters through the control screen 6 to achieve precise control of the three-dimensional movement of the processing head 14.

[0032] In a preferred embodiment, in order to provide a stable mounting base for the slide bar 10 and limit its horizontal movement range, a limiting block 9 is fixedly connected to the interior of the hollow block 5 near the four corners. The limiting block 9 is a solid block structure. One end of the slide bar 10 is fixedly connected to the outer wall of the support column 1, and the other end is fixedly connected to the side of the limiting block 9, forming a stable guide rail spanning the interior of the hollow block 5.

[0033] As a preferred embodiment, to further clarify the internal structure of the damping mechanism 2, the damping mechanism 2 includes a hollow shell 201. The shape of the damping pad 202 is adapted to the inner cavity of the hollow shell 201 and is slidably connected up and down inside the hollow shell 201. A damping block 203, which serves as the main elastic energy-absorbing element, is fixedly connected below the damping pad 202. The damping block 203 is preferably made of high-damping rubber or polyurethane material. The lower surface of the damping block 203 is fixedly connected to the inner bottom wall of the hollow shell 201, and the side is also fixedly connected to the inner side wall of the hollow shell 201.

[0034] In a preferred embodiment, in order to construct the force transmission path in the shock absorption mechanism 2, a second fixing block 204 is fixedly connected at the four corners of the upper surface of the shock absorption block 203. A fixing column 205 is fixedly connected vertically upward on the second fixing block 204. The connecting rod 206 is rotatably connected to the top of the fixing column 205 and the middle of the connecting column 207 respectively through a pin, thus forming the first stage of the lever transmission.

[0035] In a preferred embodiment, in order to complete the final action of the linkage mechanism, the connecting column 207 is fixedly connected to the limiting slider 208, and the limiting slider 208 is slidably connected to the inner wall of the hollow central block 209. The central block 209 is annular or square cylindrical, and its outer wall is fixedly connected to the outer wall of the sealing chamber 210, thereby converting the motion transmitted from the connecting rod 206 into the linear sliding of the limiting slider 208.

[0036] In a preferred embodiment, to achieve final energy dissipation, the upper end of the sealing column 211 is fixedly connected to the lower surface of the damping block 203. The sealing column 211 is a solid cylinder, and its outer diameter precisely matches the inner diameter of the sealing chamber 210 to form a sliding seal. When the damping block 203 is compressed, it will drive the sealing column 211 to be squeezed into the sealing chamber 210, using the compression or flow resistance of the medium inside the chamber to absorb energy.

[0037] Working principle: When the aluminum frame of the touch screen needs to be processed, the operator sets the processing target point through the control screen 6. The control system first drives the telescopic column 8 in the storage compartment 7 to extend or retract. The telescopic column 8 drives the hollow block 5 to rise or fall as a whole through the fixed block 1 4, adjusting the processing head 14 to a suitable vertical height. Then the control system drives the sliding block 11 to move along the sliding rod 10, and at the same time drives the positioning block 13 to move along the sliding rod 2 12. Since the processing head 14 is fixed on the positioning block 13, the two sets of orthogonal linear motions are combined into the two-dimensional planar motion of the processing head 14 in the horizontal plane. Through the coordinated control of the three motion axes of the telescopic column 8, the sliding rod 10 and the sliding rod 2 12, the processing head 14 can be accurately moved to any target position on the aluminum frame to start processing. During the processing, the force of the processing head 14 on the workpiece and the operation of its own motor will generate vibration. The vibration will be transmitted downward along the path of the processing head 14, the positioning block 13, the sliding rod, the hollow block 5 and the support column 1. When the vibration is transmitted to the damping pad 202, which is fixedly connected to the support column 1 and the support frame 3, the damping mechanism 2 begins to function. Under the vibration pressure, the damping pad 202 slides downward along the inner wall of the hollow shell 201 and squeezes the damping block 203 below. The damping block 203 is deformed by the pressure, which at the same time drives the fixed block 204 and the fixed column 205 fixedly connected to it to move downward. The fixed column 205 converts the downward pressure into a thrust on the connecting column 207 through the rotating connecting rod 206. 07 Then, the limiting slider 208 slides on the inner wall of the center block 209. At the same time, the sealing column 211 fixed below the shock absorber block 203 is also pushed downward and squeezed into the sealing chamber 210 fixedly connected to the center block 209. The movement of the sealing column 211 in the sealing chamber 210 will be damped by the air or oil in the chamber, thereby converting the mechanical energy of the vibration into heat energy and dissipating it. This ensures the extremely high stability of the processing head 14 at the moment of processing and ultimately ensures the processing accuracy of the touch screen aluminum frame.

Claims

1. A positioning fixture for machining aluminum frame of touch screen, comprising a support column (1), a hollow block (5) disposed on the support column (1) and a machining head (14) movably disposed inside the hollow block (5). Its features are, It also includes a storage compartment (7) and a telescopic column (8) for driving the hollow block (5) to rise and fall. The storage compartment (7) is fixedly connected to the support column (1), and the telescopic column (8) is slidably connected in the storage compartment (7) to drive the hollow block (5) to rise and fall. The touch screen aluminum frame machining positioning fixture also includes a slide bar one (10), a slide block (11), a slide bar two (12), and a positioning block (13) for driving the machining head (14) to move horizontally. The slide block (11) is slidably connected to the slide bar one (10), the positioning block (13) is slidably connected to the slide bar two (12), and the machining head (14) is fixedly connected to the positioning block (13).

2. The positioning fixture for machining aluminum frames of touch screens according to claim 1, characterized in that, The positioning fixture for machining the aluminum frame of the touch screen also includes a shock absorption mechanism (2) for absorbing vibration. The shock absorption mechanism (2) includes a shock absorption pad (202), a shock absorption block (203), a sealing chamber (210), and a sealing column (211). When the shock absorption pad (202) receives vibration pressure, it drives the shock absorption block (203). The shock absorption block (203) drives the sealing column (211) to be squeezed into the sealing chamber (210) through a mechanical linkage mechanism to achieve shock absorption.

3. The positioning fixture for machining aluminum frames of touch screens according to claim 1, characterized in that, The touch screen aluminum frame machining positioning fixture also includes a support frame (3) and a fixing block (4). The support frame (3) is fixedly connected to both sides of the support column (1), and the fixing block (4) is used to connect the telescopic column (8) and the hollow block (5).

4. The positioning fixture for machining aluminum frames of touch screens according to claim 1, characterized in that, The touch screen aluminum frame machining positioning fixture also includes a control screen (6), which is fixedly connected above the hollow block (5) and is used to control the movement of the telescopic column (8), the sliding block (11) and the positioning block (13).

5. A positioning fixture for machining aluminum frames of touch screens according to claim 1, characterized in that, The touch screen aluminum frame machining positioning fixture also includes a limiting block (9), which is fixedly connected to the inside of the hollow block (5) around the perimeter, and the slide rod (10) is fixedly connected to both sides of the support column (1) and the side of the limiting block (9).

6. A positioning fixture for machining aluminum frames of touch screens according to claim 2, characterized in that, The shock absorption mechanism (2) further includes a hollow shell (201), the shock absorption pad (202) is slidably connected inside the hollow shell (201), and the shock absorption block (203) is fixedly connected to the bottom of the shock absorption pad (202) and the inner wall of the hollow shell (201).

7. A positioning fixture for machining aluminum frames of touch screens according to claim 2, characterized in that, The mechanical linkage mechanism includes a second fixed block (204), a fixed column (205), a connecting rod (206), and a connecting column (207). The shock-absorbing block (203) is fixedly connected to the second fixed block (204), and the fixed column (205) is fixedly connected to the second fixed block (204). The connecting rod (206) is rotatably connected between the fixed column (205) and the connecting column (207).

8. A positioning fixture for machining a touch screen aluminum frame according to claim 7, characterized in that, The mechanical linkage mechanism further includes a limiting slider (208) and a center block (209). The limiting slider (208) is fixedly connected to the connecting column (207), and the limiting slider (208) is slidably connected to the inner wall of the center block (209).

9. A positioning fixture for machining aluminum frames of touch screens according to claim 8, characterized in that, The central block (209) is fixedly connected to the outer wall of the sealed chamber (210).

10. A positioning fixture for machining aluminum frames of touch screens according to claim 2, characterized in that, The sealing column (211) is fixedly connected to the damping block (203).

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