Pneumatic high-precision load-resistant index plate device

Abstract

According to the technical scheme, the pneumatic high-precision load-resistant index plate device is characterized in that the pneumatic high-precision load-resistant index plate device comprises a base; a rotating shaft; the turntable is rotationally connected to the rotating shaft through a one-way bearing; the gear is fixed on the rotating shaft; the rack is meshed with the gear, and the gear is connected to the base so as to drive the gear to rotate through sliding; an inclined surface is arranged on one side of the push block, and the push block is fixed on the rack; the locking shaft is arranged on the base and can slide on the base, the locking shaft can get close to and get away from the rotating disc through sliding, and the inclined face of the push block makes contact with the end, away from the rotating disc, of the locking shaft so that the locking shaft can be pushed to slide through sliding of the rack; through the arrangement of the push block and the locking shaft, the external load resisting capacity of the index plate is improved, transmission structures such as a gear and a rack are not prone to being damaged due to the fact that the push block and the locking shaft are loaded, and the problem of poor accuracy is not prone to occurring after long-time use.

Description

Technical Field

[0001] The utility model relates to a dividing plate device, and more particularly to a pneumatic high-precision load-resistant dividing plate device. Background Art

[0002] Pneumatic indexing plates are widely used in the field of automation. For example, in automated production lines, in order to minimize the footprint, pneumatic indexing plates are used when multi-station turntable production lines are used. Pneumatic indexing plates are also used in fully automatic tooling changes.

[0003] The principle of the existing pneumatic indexing plate is that the gear is fixed to the inner ring of the one-way bearing, and the outer ring of the one-way bearing is connected to the ratchet. The gear is set to rotate counterclockwise when the cylinder retracts, and to rotate clockwise when it extends. When the cylinder retracts and drives the gear to rotate counterclockwise through the rack, the pawl is in the counterclockwise rotation direction of the locked ratchet, so that the ratchet cannot rotate counterclockwise with the gear. When the bearing is extended, the gear drives the ratchet to rotate clockwise, and the ratchet, which has lost the locking effect of the pawl, rotates clockwise with the gear. As a result, the ratchet can drive the ratchet to rotate clockwise by a fixed angle during the reciprocating extension and contraction process of the cylinder to realize the sequential switching of the turntable positions on the ratchet.

[0004] For existing pneumatic indexing plates, a ratchet and pawl locking method is adopted. After the turntable is positioned and stationary, only the pawl is used to limit the counterclockwise direction. Therefore, this type of pneumatic indexing plate cannot withstand loads in the counterclockwise tangential direction. In actual applications, inaccurate rotation positions are prone to occur after long-term use. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the purpose of the utility model is to provide a pneumatic high-precision load-resistant dividing plate device, which improves the dividing plate's ability to withstand external loads through the arrangement of a push block and a locking shaft, and the push block and the locking shaft bear the load, which is not easy to damage transmission structures such as gears and racks, so that the problem of poor accuracy is not likely to occur after long-term use.

[0006] To achieve the above-mentioned purpose, the present utility model provides the following technical solutions: a pneumatic high-precision load-resistant indexing disk device, comprising a base;

[0007] a rotating shaft rotatably connected to the base;

[0008] A turntable, which is rotatably connected to the rotating shaft via a one-way bearing and is located above the base;

[0009] a gear fixed on the rotating shaft;

[0010] A rack meshing with a gear connected to the base to drive the gear to rotate by sliding;

[0011] A push block, one side of which is provided with an inclined surface, and the push block is fixed on the rack;

[0012] And a locking shaft, which is arranged on the base and can slide on the base. The locking shaft can approach and move away from the turntable by sliding. The inclined surface of the push block contacts the end of the locking shaft away from the turntable to push the locking shaft to slide through the sliding of the rack.

[0013] The utility model is further configured to include: a dovetail slider, wherein the dovetail slider is fixedly connected to the bottom of the base;

[0014] And a dovetail slide rail, which is fixedly connected to the rack and can slide on the dovetail slider along the length direction of the rack.

[0015] The utility model is further configured to include a cylinder, which is fixedly connected to one side of the base and located at one end of the rack, and one end of the dovetail slide rail close to the cylinder is fixedly connected to the piston rod of the cylinder.

[0016] The utility model is further configured to include a dead stop block, which is fixedly connected to the bottom of the base and located at the end of the rack away from the cylinder.

[0017] The utility model is further configured to include: a damping column, which is arranged on one side of the turntable and fixedly connected to the base through a connecting plate, the length direction of the damping column is arranged along the radial direction of the turntable, and a damping hole is provided at one end of the damping column close to the turntable;

[0018] A damping ball is disposed in the damping hole and is capable of sliding in the damping hole along the length direction of the damping column;

[0019] and an elastic member, which is disposed in the damping hole and applies an elastic force toward the turntable to the damping ball;

[0020] A slot is provided outside the turntable, and two sides of the slot are arranged in an arc shape.

[0021] The utility model is further configured as follows: the elastic member is configured as a spring.

[0022] The utility model is further configured as follows: the rotating shaft and the base are rotatably connected together through two angular contact bearings and a gasket located between the two angular contact bearings.

[0023] The utility model is further configured as follows: a cover plate located between the turntable and the base is fixedly connected to the top of the base;

[0024] The rotating shaft outer sleeve is provided with a spacer ring located between the angular contact bearing at the bottom and the gear.

[0025] To sum up, compared with the prior art, the present invention has the following beneficial effects: the present invention improves the ability of the dividing plate to withstand external loads through the arrangement of the push block and the locking shaft, and the push block and the locking shaft bear the load, which is not easy to damage the transmission structures such as gears and racks, so that the problem of poor accuracy is not easy to occur after long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall structure of the embodiment;

[0027] Figure 2 is a cross-sectional view of the overall structure of the embodiment;

[0028] Figure 3 A schematic diagram of a rack is shown in the embodiment;

[0029] Figure 4 This is a schematic diagram of a locking shaft according to an embodiment;

[0030] Figure 5 for Figure 4 A magnified schematic diagram of part A.

[0031] In the figure: 1. Base; 11. Connecting plate; 12. Cover plate; 13. Spacer ring; 2. Turntable; 21. Slot; 22. Matching slot; 3. Rack; 31. Dovetail slide rail; 32. Dovetail slider; 33. Dead stop; 4. Gear; 5. Rotating shaft; 6. Damping column; 61. Damping hole; 62. Elastic part; 63. Damping ball; 7. Cylinder; 8. Push block; 9. Locking shaft. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the present invention, the following is a clear and complete description of the technical solution of the present invention in conjunction with the drawings of the present invention. Based on the embodiments in this application, other similar embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of this application. In addition, the directional terms mentioned in the following embodiments, such as "up", "down", "left", "right", etc., are only referenced to the directions of the drawings. Therefore, the directional terms used are used to illustrate rather than limit the invention.

[0033] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0034] Example: A pneumatic high-precision load-resistant indexing plate device, see attached Figure 1 -Attached Figure 5, including a base 1, a rotating shaft 5, a turntable 2, a gear 4, a rack 3, a push block 8 and a locking shaft 9; the rotating shaft 5 is rotatably connected to the base 1; the turntable 2 is rotatably connected to the rotating shaft 5 through a one-way bearing and is located above the base 1; the gear 4 is fixed on the rotating shaft 5; the rack 3 is meshed with the gear 4, and the gear 4 is connected to the base 1 to drive the gear 4 to rotate by sliding; a slope is provided on one side of the push block 8, and the push block 8 is fixed on the rack 3; the locking shaft 9 is provided on the base 1 and can slide on the base 1, and the locking shaft 9 can approach and move away from the turntable 2 by sliding, and the slope of the push block 8 contacts the end of the locking shaft 9 away from the turntable 2 to push the sliding of the locking shaft 9 through the sliding of the rack 3.

[0035] Specifically, this embodiment further includes a damping column 6, a damping ball 63, and an elastic member 62. The damping column 6 is arranged on one side of the turntable 2, and the length direction of the damping column 6 is arranged along the radial direction of the turntable 2. A damping hole 61 is provided at the end of the damping column 6 close to the turntable 2. The damping ball 63 is arranged in the damping hole 61 and can slide in the damping hole 61 along the length direction of the damping column 6. The elastic member 62 is arranged in the damping hole 61 and applies an elastic force toward the turntable 2 to the damping ball 63. A slot 21 is provided on the outside of the turntable 2, and the two sides of the slot 21 are arranged in an arc shape. Each indexing position on the turntable 2 corresponds to a slot 21. The angle between two adjacent slots 21 is the angle at which the piston rod of the cylinder 7 extends once to drive the turntable 2 to rotate the rack 3.

[0036] Specifically, this embodiment further includes a dovetail slider 32, a dovetail rail 31, and a cylinder 7. The dovetail slider 32 is fixedly connected to the bottom of the base 1; the dovetail rail 31 is fixedly connected to the rack 3 and can slide on the dovetail slider 32 along the length of the rack 3. The cylinder 7 is fixedly connected to one side of the base 1 and is located at one end of the rack 3. The end of the dovetail rail 31 closest to the cylinder 7 is fixedly connected to the piston rod of the cylinder 7.

[0037] When in use, the piston rod of the cylinder 7 extends outward, thereby driving the rack 3 to slide, so as to drive the gear 4 to rotate through the rack 3, and then drive the shaft 5 to rotate. When the rack 3 is extended, the shaft 5 rotates in the positive direction. Due to the setting of the one-way bearing, the shaft 5 and the turntable 2 are relatively fixed when rotating in the positive direction, and the shaft 5 will drive the turntable 2 to rotate together. When the rack 3 is extended to a specified length, that is, when the turntable 2 rotates to a specified angle, the slot 21 is aligned with the damping column 6, so that the damping ball 63 is under the action of the elastic member 62. When the rack 3 retracts, the gear 4 and the shaft 5 rotate in the opposite direction. When the rack 3 rotates in the opposite direction, the shaft 5 and the turntable 2 can rotate relative to each other due to the setting of the one-way bearing. In addition, the damping ball 63 blocks the turntable 2 in the slot 21, so that the turntable 2 will not rotate with the shaft 5. After the piston rod of the cylinder 7 is completely retracted, it is extended again until the next slot 21 of the turntable 2 is aligned with the damping column 6, and then retracted.

[0038] Every time the piston rod of the cylinder 7 pushes the rack 3 to extend, the push block 8 on the rack 3 slides forward with the rack 3, and then pushes the locking shaft 9 to move upward through the inclined surface. When the rack 3 is extended to the specified distance, the locking shaft 9 is pressed against the bottom of the turntable 2 to lock the turntable 2, and the locking of the locking shaft 9 can lock the turntable 2 in both clockwise and counterclockwise directions, thereby ensuring that the turntable 2 can withstand external loads in both clockwise and counterclockwise directions. Moreover, since neither the push block 8 nor the locking shaft 9 is a transmission structure that drives the turntable 2 to rotate, the rotation accuracy of the dividing plate will not be affected even after long-term use.

[0039] Specifically, this embodiment also includes a dead stop block 33, which is fixedly connected to the bottom of the base 1 and is located at the end of the rack 3 away from the cylinder 7. Through the setting of the dead stop block 33, it can prevent the slider from detaching from the base 1 from the side of the base 1 away from the cylinder 7.

[0040] Specifically, the push block 8 is arranged on the top of the rack 3, and the locking shaft 9 vertically passes through the base 1 and can slide up and down on the base 1. The bottom end of the locking shaft 9 contacts the inclined surface of the push block 8. The inclined surface of the push block 8 is tilted upward at the end close to the cylinder 7, so that when the piston rod of the cylinder 7 pushes the rack 3 to extend, the locking shaft 9 can be driven to move upward and closest to the turntable 2.

[0041] Specifically, an annular mating groove 22 is provided at the bottom of the turntable 2 and is arranged around the axis of the turntable 2. The upper end of the locking shaft 9 can be inserted upward into the mating groove 22. When the rack 3 extends and reaches a specified distance, the top end of the locking shaft 9 is pressed against the top of the mating groove 22.

[0042] Specifically, this embodiment further includes a connecting plate 11 , and the damping column 6 and the cylinder 7 are fixedly connected to the connecting plate 11 .

[0043] Specifically, a sensor is further provided on the connecting plate 11, and the sensor is used to detect whether the turntable 2 rotates during the retraction of the rack 3. In this embodiment, the sensor can be set as a visual sensor.

[0044] Specifically, the elastic member 62 in the damping column 6 is configured as a spring, and both ends of the spring are fixedly connected to the damping ball 63 and the damping column 6 respectively.

[0045] Specifically, the rotating shaft 5 and the base 1 are rotatably connected together via two angular contact bearings and a gasket located between the two angular contact bearings.

[0046] Specifically, a cover plate 12 located between the turntable 2 and the base 1 is fixedly connected to the top of the base 1 ; a spacer ring 13 located between the angular contact bearing at the bottom and the gear 4 is provided on the outer sleeve of the rotating shaft 5 .

[0047] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A pneumatic high-precision load-resistant indexing plate device, characterized by: comprising a base (1); A rotating shaft (5), the rotating shaft (5) being rotatably connected to the base (1); A turntable (2), the turntable (2) being rotatably connected to the rotating shaft (5) via a one-way bearing and being located above the base (1); a gear (4), wherein the gear (4) is fixed on the rotating shaft (5); a rack (3), wherein the rack (3) is meshed with a gear (4), and the gear (4) is connected to the base (1) to drive the gear (4) to rotate by sliding; A push block (8), one side of which is provided with an inclined surface, and the push block (8) is fixed on the rack (3); and a locking shaft (9), wherein the locking shaft (9) is arranged on the base (1) and can slide on the base (1), and the locking shaft (9) can approach and move away from the turntable (2) by sliding, and the inclined surface of the pushing block (8) contacts the end of the locking shaft (9) away from the turntable (2) to push the sliding of the locking shaft (9) through the sliding of the rack (3).

2. A pneumatic high-precision load-bearing indexing disk device according to claim 1, characterized in that: It also includes a dovetail slider (32), wherein the dovetail slider (32) is fixedly connected to the bottom of the base (1); and a dovetail slide rail (31), which is fixedly connected to the rack (3) and can slide on the dovetail slider (32) along the length direction of the rack (3).

3. The pneumatic high-precision load-bearing indexing disk device according to claim 2, characterized in that: It also includes a cylinder (7), which is fixedly connected to one side of the base (1) and located at one end of the rack (3), and a dovetail slide rail (31) is fixedly connected to the piston rod of the cylinder (7) at one end close to the cylinder (7).

4. The pneumatic high-precision load-bearing indexing disk device according to claim 3, characterized in that: It also includes a dead stop block (33), which is fixedly connected to the bottom of the base (1) and is located at an end of the rack (3) away from the cylinder (7).

5. The pneumatic high-precision load-bearing indexing disk device according to claim 1, characterized in that: It also includes a damping column (6), which is arranged on one side of the turntable (2) and fixedly connected to the base (1) via a connecting plate (11), the length direction of the damping column (6) is arranged along the radial direction of the turntable (2), and a damping hole (61) is provided at one end of the damping column (6) close to the turntable (2); a damping ball (63), the damping ball (63) being arranged in the damping hole (61) and being capable of sliding in the damping hole (61) along the length direction of the damping column (6); and an elastic member (62), wherein the elastic member (62) is arranged in the damping hole (61) and applies an elastic force toward the turntable (2) to the damping ball (63); A clamping slot (21) is provided outside the rotating disk (2), and two sides of the clamping slot (21) are arranged in an arc shape.

6. The pneumatic high-precision load-bearing indexing plate device according to claim 5, characterized in that: The elastic member (62) is configured as a spring.

7. The pneumatic high-precision load-bearing indexing disk device according to claim 1, characterized in that: The rotating shaft (5) and the base (1) are rotatably connected together via two angular contact bearings and a gasket located between the two angular contact bearings.

8. The pneumatic high-precision load-bearing indexing plate device according to claim 7, characterized in that: The top of the base (1) is fixedly connected to a cover plate (12) located between the turntable (2) and the base (1); The outer sleeve of the rotating shaft (5) is provided with a spacer ring (13) located between the angular contact bearing at the bottom and the gear (4).

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