High-precision clamping mechanism for workpiece fixation

Abstract

The present invention discloses a high-precision clamping mechanism for fixing a workpiece, comprising a frame, a self-locking component, a plurality of clamps, a work station disk rotatably arranged on the frame, and a sensor arranged on the frame, the self-locking component comprising a column and a driving cylinder, the screw rod of the driving cylinder is connected to the punch and the punch corresponds to the sensor, each clamp comprises a lower positioning plate arranged on the work station disk, an upper positioning plate arranged on the lower positioning plate, a lower pressing block slidably arranged on the upper positioning plate and capable of engaging with the upper positioning plate through an adapter, the lower pressing block is provided with a guide rod, the top of the guide rod passes through a through hole of the upper positioning plate and the guide rod can slide in the through hole, a spring is sleeved on the part of the guide rod located between the upper positioning plate and the lower pressing block, one end of the spring is connected to the guide rod, and the other end of the spring is connected to the lower pressing block. The purpose of the present invention is to provide a high-precision clamping mechanism for fixing a workpiece, avoid product crushing, and effectively reduce the product scrap rate.

Description

Technical Field

[0001] The invention relates to the technical field of earphone processing devices, and in particular to a high-precision clamping mechanism for fixing a workpiece. Background Art

[0002] Headphones are mostly used in mobile phones, walkmans, radios, portable video games and digital audio players. Currently, glue is usually used to assemble the inner mold rubber parts of the headphone plug and the plug cover. However, when the dispensing machine presses the product for dispensing, the force of pressing the product down instantly can easily cause damage to the product, and the product scrap rate is high. Therefore, for the high-precision clamping mechanism used to fix the workpiece, the force of pressing the product down instantly can easily cause damage to the product, and the high product scrap rate is the problem we need to solve. Summary of the invention

[0003] In order to overcome the above-mentioned shortcomings, the purpose of the present invention is to provide a high-precision clamping mechanism for fixing workpieces, so as to avoid product crushing and effectively reduce the product scrap rate.

[0004] In order to achieve the above objectives, the technical solution adopted by the present invention is: a high-precision clamping mechanism for fixing workpieces, including a frame, a self-locking component, a plurality of clamps, a work station disk rotatably arranged on the frame, and a sensor arranged on the frame, the self-locking component including a column arranged on the frame and a driving cylinder arranged on the column, the column being located in the center hole of the work station disk, the screw rod of the driving cylinder being connected to the punch and the punch corresponding to the sensor, each clamp including a lower positioning plate arranged on the work station disk and used for placing the product, an upper positioning plate arranged on the lower positioning plate, a lower pressing block slidably arranged on the upper positioning plate and capable of engaging with the upper positioning plate through an adapter, the adapter being located below the punch, a guide rod being arranged on the lower pressing block, the top of the guide rod passing through the through hole of the upper positioning plate and the guide rod being able to slide in the through hole, a spring being sleeved on the part of the guide rod located between the upper positioning plate and the lower pressing block and one end of the spring being connected to the upper positioning plate, and the other end of the spring being connected to the lower pressing block.

[0005] It also includes a guide plate, which is connected to the column through a first connecting shaft. The guide plate is a high front and low rear structure. A guide rod is also provided on the lower pressing block, and the guide rod is located above the guide plate and in contact with the lower pressing block. When the upper positioning plate and the lower pressing block are separated, the station plate will continue to drive the lower positioning plate, the upper positioning plate and the lower pressing block to rotate clockwise, and the guide rod will also rotate together. The guide rod contacts the guide plate and slides slowly downward along the guide of the guide plate, further driving the lower pressing block to slide slowly downward, slowing down the speed of the lower pressing block sliding downward.

[0006] The beneficial effect of the high-precision clamping mechanism for fixing workpieces of the present invention is that a person places the product to be glued on the lower positioning plate, the work station plate rotates clockwise, the product to be glued rotates clockwise with it, and the upper positioning plate and the lower pressing block are in engagement (initial state) through the adapter. When the product to be glued rotates between the punch and the sensor, after the sensor detects the components on the product to be glued, the driving cylinder is turned on, the driving cylinder drives the punch to slide downward, the punch contacts the adapter and drives the adapter to rotate, and after the adapter rotates, the upper positioning plate and the lower pressing block are separated. Since the lower pressing block is slidingly arranged on the upper positioning plate, when there is no adapter to engage the upper positioning plate and the lower pressing block together, the lower pressing block will slide downward under the action of its own gravity and press the product to be glued on the lower positioning plate. At the same time, the guide rod slides downward in the through hole, and the setting of the spring makes the guide rod subject to resistance when sliding downward, so that when the lower pressing block slides downward, it will not instantly press the product and damage the product. After pressing the product, the guide rod and the lower pressing block will no longer slide downward. The high-precision clamping mechanism of this structure prevents the lower pressing block from instantly pressing down on the product and causing damage to the product, thus effectively reducing the product scrap rate.

[0007] As a further improvement of the present invention, the adapter includes a clamping strip and a fixed shaft arranged on the lower pressing block, the clamping strip is sleeved on the fixed shaft and can rotate with the fixed shaft as the central axis, a clamping hook is arranged on the clamping strip, a clamping slot is arranged on the upper positioning plate, the clamping hook can be inserted into the clamping slot and the clamping hook is located below the punch. When the product to be dispensed rotates between the punch and the sensor, the driving cylinder is turned on, the driving cylinder drives the punch to slide downward, the punch contacts the clamping hook and drives the clamping hook to separate from the clamping slot, and the clamping strip rotates.

[0008] As a further improvement of the present invention, a slider is arranged on the upper positioning plate, and a guide rail matching the slider is arranged on the lower pressing block, and the slider can be embedded in the guide rail and can slide. The arrangement of the slider and the guide rail enables the lower pressing block to slide more stably.

[0009] As a further improvement of the present invention, it further comprises a positioning piece arranged on the lower pressing block, the positioning piece is provided with a clearance hole, the bottom of the guide rod is arranged in the clearance hole, and the spring sleeve is arranged on the portion of the guide rod located between the positioning piece and the upper positioning plate. The positioning piece enables the guide rod to be stably connected to the lower pressing block.

[0010] As a further improvement of the present invention, it further comprises a rotating motor arranged on the frame, the screw rod of the rotating motor is connected with the work station disc and can drive the work station disc to rotate. When the rotating motor is turned on, the work station disc is driven to rotate.

[0011] As a further improvement of the present invention, it further comprises a second connecting shaft, through which the driving cylinder is connected to the column. The second connecting shaft enables the driving cylinder to be stably connected to the column. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a structural diagram of this embodiment;

[0013] Figure 2 This is a structural diagram of the lower pressing block of this embodiment;

[0014] Figure 3 This is a structural diagram of the upper positioning plate and the lower pressing block when they are separated in this embodiment.

[0015] In the figure:

[0016] 1-work station plate; 2-self-locking assembly; 21-column; 22-driving cylinder; 3-clamp; 31-lower positioning plate; 32-upper positioning plate; 33-lower pressure block; 4-punch; 5-guide rod; 6-spring; 7-guide plate; 8-guide rod; 9-clamping strip; 10-first connecting shaft; 11-clamping hook; 12-clamping groove; 13-guide rail; 14-slider; 15-second connecting shaft; 16-clamping piece. DETAILED DESCRIPTION

[0017] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0018] See attached Figure 1-3As shown, the high-precision clamping mechanism for fixing a workpiece in this embodiment includes a frame, a self-locking component 2, a plurality of clamps 3, a work station disk 1 rotatably arranged on the frame, and a sensor arranged on the frame. The self-locking component 2 includes a column 21 arranged on the frame and a driving cylinder 22 arranged on the column 21. The column 21 is located in the center hole of the work station disk 1. The screw rod of the driving cylinder 22 is connected to the punch 4 and the punch 4 corresponds to the sensor. Each clamp 3 includes a lower positioning plate arranged on the work station disk 1 and used to place the product 31, an upper positioning plate 32 arranged on the lower positioning plate 31, a lower pressing block 33 slidably arranged on the upper positioning plate 32 and capable of engaging with the upper positioning plate 32 through an adapter, the adapter being located below the punch 4, a guide rod 5 arranged on the lower pressing block 33, the top of the guide rod 5 passing through the through hole of the upper positioning plate 32 and the guide rod 5 being capable of sliding in the through hole, a spring 6 sleeved on the portion of the guide rod 5 located between the upper positioning plate 32 and the lower pressing block 33, one end of the spring 6 being connected to the upper positioning plate 32, and the other end of the spring 6 being connected to the lower pressing block 33. A person places the product to be dispensed on the lower positioning plate 31, the station tray 1 rotates clockwise, and the product to be dispensed rotates clockwise with it, and the upper positioning plate 32 and the lower pressing block 33 are engaged with each other through the adapter (initial state). When the product to be dispensed rotates between the punch 4 and the sensor, and the sensor detects the parts on the product to be dispensed, the driving cylinder 22 is turned on, and the driving cylinder 22 drives the punch 4 to slide downward, and the punch 4 contacts the adapter and drives the adapter to rotate. After the adapter rotates, the upper positioning plate 32 and the lower pressing block 33 are separated. Since the lower pressing block 33 is slidably arranged on the upper positioning plate 32, when there is no adapter to clamp the upper positioning plate 32 and the lower pressing block 33 together, the lower pressing block 33 will slide downward under the action of its own gravity and press the product to be dispensed on the lower positioning plate 31. At the same time, the guide rod 5 slides downward in the through hole, and the setting of the spring 6 makes the guide rod 5 encounter resistance when sliding downward, so that when the lower pressing block 33 slides downward, it will not instantly press the product and damage the product. After pressing the product, the guide rod 5 and the lower pressing block 33 will no longer slide downward. With this high-precision clamping mechanism of the structure, the lower pressing block 33 will not instantly press the product and damage the product, effectively reducing the product scrap rate.

[0019] The present embodiment also includes a guide plate 7, which is connected to the column 21 through a first connecting shaft 10. The guide plate 7 is a structure that is high in the front and low in the back. A guide rod 8 is also provided on the lower pressing block 33, and the guide rod 8 is located above the guide plate 7 and in contact with it. When the upper positioning plate 32 and the lower pressing block 33 are separated, the work station 1 will continue to drive the lower positioning plate 31, the upper positioning plate 32 and the lower pressing block 33 to rotate clockwise, and the guide rod 8 will also rotate together. The guide rod 8 contacts the guide plate 7 and slides slowly downward along the guide of the guide plate 7, further driving the lower pressing block 33 to slide slowly downward, slowing down the speed at which the lower pressing block 33 slides downward.

[0020] The adapter of this embodiment includes a clamping strip 9 and a fixed shaft arranged on the lower pressing block 33. The clamping strip 9 is sleeved on the fixed shaft and can rotate around the fixed shaft as the central axis. A clamping hook 11 is arranged on the clamping strip 9. A clamping groove 12 is arranged on the upper positioning plate 32. The clamping hook 11 can be inserted into the clamping groove 12 and the clamping hook 11 is located below the punch 4. When the product to be dispensed rotates between the punch 4 and the sensor, the driving cylinder 22 is turned on, and the driving cylinder 22 drives the punch 4 to slide downward, the punch 4 contacts the clamping hook 11 and drives the clamping hook 11 to separate from the clamping groove 12, and the clamping strip 9 rotates.

[0021] The upper positioning plate 32 of this embodiment is provided with a slider 14, and the lower pressing block 33 is provided with a guide rail 13 matching the slider 14, and the slider 14 can be embedded in the guide rail 13 and can slide. The arrangement of the slider 14 and the guide rail 13 enables the lower pressing block 33 to slide more stably.

[0022] The present embodiment further includes a positioning piece 16 disposed on the lower pressing block 33, a clearance hole is disposed on the positioning piece 16, the bottom of the guide rod 5 is disposed in the clearance hole, and the spring 6 is sleeved on the portion of the guide rod 5 located between the positioning piece 16 and the upper positioning plate 32. The positioning piece 16 enables the guide rod 5 to be stably connected to the lower pressing block 33.

[0023] This embodiment also includes a rotating motor arranged on the frame, the screw rod of the rotating motor is connected to the work station disc 1 and can drive the work station disc 1 to rotate. The rotating motor is turned on to drive the work station disc 1 to rotate.

[0024] This embodiment further includes a second connecting shaft 15, through which the driving cylinder 22 is connected to the column 21. The second connecting shaft 15 enables the driving cylinder 22 to be stably connected to the column 21.

[0025] The above implementation modes are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-precision clamping mechanism for fixing workpieces, characterized by: The invention comprises a frame, a self-locking component (2), a plurality of clamps (3), a work station disk (1) rotatably arranged on the frame, and a sensor arranged on the frame, wherein the self-locking component (2) comprises a column (21) arranged on the frame and a driving cylinder (22) arranged on the column (21), wherein the column (21) is located in a central hole of the work station disk (1), a screw rod of the driving cylinder (22) is connected to a punch (4), and the punch (4) corresponds to the sensor, and each of the clamps (3) comprises a lower positioning plate (31) arranged on the work station disk (1) and used for placing a product, an upper positioning plate (32) arranged on the lower positioning plate (31), and a lower pressing block (33) slidably arranged on the upper positioning plate (32) and capable of engaging with the upper positioning plate (32) through an adapter, wherein the adapter is located below the punch (4), and a guide rod (5) is arranged on the lower pressing block (33), and the guide rod (5) is arranged on the lower pressing block (33). The top of the rod (5) passes through the through hole of the upper positioning plate (32) and the guide rod (5) can slide in the through hole. A spring (6) is sleeved on the part of the guide rod (5) located between the upper positioning plate (32) and the lower pressing block (33), and one end of the spring (6) is connected to the upper positioning plate (32), and the other end of the spring (6) is connected to the lower pressing block (33). The guide plate (7) is also connected to the column (21) through a first connecting shaft (10). The guide plate (7) is a structure with a high front and a low rear. A guide rod (8) is also provided on the lower pressing block (33), and the guide rod (8) is located above the guide plate (7) and contacts with the guide plate (7). The guide rod (8) contacts with the guide plate (7) and slides slowly downward along the guide of the guide plate (7), further driving the lower pressing block (33) to slide slowly downward, thereby slowing down the speed at which the lower pressing block (33) slides downward.

2. The high-precision clamping mechanism for fixing a workpiece according to claim 1, characterized in that: The adapter comprises a clamping strip (9) and a fixed shaft arranged on the lower pressing block (33); the clamping strip (9) is sleeved on the fixed shaft and can rotate around the fixed shaft as the central axis; a clamping hook (11) is arranged on the clamping strip (9); a clamping groove (12) is arranged on the upper positioning plate (32); the clamping hook (11) can be inserted into the clamping groove (12) and the clamping hook (11) is located below the punch (4).

3. The high-precision clamping mechanism for fixing a workpiece according to claim 1, characterized in that: The upper positioning plate (32) is provided with a sliding block (14), and the lower pressing block (33) is provided with a guide rail (13) matching the sliding block (14). The sliding block (14) can be embedded in the guide rail (13) and can slide.

4. The high-precision clamping mechanism for fixing a workpiece according to claim 1, characterized in that: It also includes a locking piece (16) arranged on the lower pressing block (33), the locking piece (16) being provided with a clearance hole, the bottom of the guide rod (5) being arranged in the clearance hole, and the spring (6) being sleeved on the portion of the guide rod (5) located between the locking piece (16) and the upper positioning plate (32).

5. The high-precision clamping mechanism for fixing a workpiece according to claim 1, characterized in that: It also includes a rotating motor arranged on the frame, wherein the screw rod of the rotating motor is connected to the work station disk (1) and can drive the rotating motor to rotate.

6. The high-precision clamping mechanism for fixing a workpiece according to claim 1, characterized in that: It also includes a second connecting shaft (15), and the driving cylinder (22) is connected to the column (21) via the second connecting shaft (15).

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