Tray rotation positioning device for small space

Abstract

The utility model discloses a tray rotary positioning device for a small space, which is characterized in that a rotary driving unit is arranged on a lifting sliding table, a driving gear is arranged on an output shaft of the rotary driving unit, a rotary table is arranged at the top of the lifting sliding table, and a rotary support is rotatably arranged on the rotary table through a bearing; an outer tooth part meshed with the driving gear is arranged on the periphery of the rotary support, the radius of the driving gear is smaller than that of the outer tooth part, and the tray assembly is installed on the rotary support. According to the tray rotation positioning device with the optimized design, rotation is achieved through cooperation of the driving gear and the rotation support, the rotation angle is free, and the rotation precision is guaranteed; meanwhile, according to the design, the rotary driving unit is laterally installed, and the space utilization rate is greatly increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to workpiece assembly technical field especially relates to a tray rotary positioning device for small space. BACKGROUND

[0002] In the workpiece assembly process, the main body needs to be placed on the rotary tray, and is lifted to the preset position through the lifting mechanism, so that different workpieces are installed at multiple positions around the main body. The tray lifting rotary assembly is usually a pneumatic component lifting, manual rotation or pneumatic lifting and pneumatic rotation.

[0003] For the current manual lifting rotation, its use scene is limited, and it is only suitable for manual / semi-automatic workstations with manual operation; the rotation accuracy is guaranteed by machining of machine parts, and it cannot be used in scenes with high accuracy and automation rate.

[0004] Compared with manual lifting rotation, pneumatic lifting rotation greatly increases the use scene, and can be used in manual and automatic workstations, but the accuracy is affected by the accuracy of the rotary cylinder, and the general rotary cylinder position has only two relatively fixed rotation angles, which is not suitable for workstations with multiple rotation positions. The price of some brand rotary cylinders is also relatively high, and they do not have an advantage in price compared with servo motors.

[0005] The commonly used electric servo lifting rotation has a relatively complex structure, and the assembly and adjustment are difficult and the workload is relatively large. The existing electric lifting rotation realizes the overall lifting and lowering by pushing the left and right movement of the wedge by the cylinder. The height of the wedge requires high machining, and the wedge height adjustment is difficult for assembly. The linkage part is pushed by the cylinder to move the wedge, and the structure is complex and difficult to assemble and adjust; at the same time, the servo and speed reducer are fixed below the tray lifting, which occupies a large space, the whole mechanism cost is high, and it is not suitable for cost reduction requirements. INVENTION CONTENTS

[0006] To solve the technical problems in the background art, the utility model provides a tray rotary positioning device for small space.

[0007] The utility model provides a tray rotary positioning device for small space, which comprises a base, a lifting assembly, a rotary assembly and a tray assembly.

[0008] The base is provided with a support structure with vertically extending lifting slides, the lifting assembly comprises a lifting slide and a lifting cylinder, the lifting slide is slidably installed on the base through the lifting slides, and the lifting cylinder is installed on the base and connected with the lifting slide through the output end;

[0009] The slewing assembly comprises a slewing driving unit, a slewing table, a driving gear and a slewing support, the slewing driving unit is installed on the lifting slide table, the driving gear is installed on an output shaft of the slewing driving unit, the slewing table is installed on the top of the lifting slide table, the slewing support is rotatably installed on the slewing table through a bearing, an outer tooth portion meshing with the driving gear is arranged on the outer periphery of the slewing support, the radius of the driving gear is smaller than the radius of the outer tooth portion, and the tray assembly is installed on the slewing support.

[0010] Preferably, the anti-falling assembly further comprises an anti-falling cylinder and a limiting piece, the anti-falling cylinder is installed on the base, an output shaft of the anti-falling cylinder horizontally extends, and the limiting piece is installed on the output shaft for limiting the lifting slide table.

[0011] Preferably, a plurality of adjusting feet are arranged on the bottom of the base.

[0012] Preferably, the lifting cylinder and the slewing driving unit are respectively arranged on the two sides of the support structure.

[0013] Preferably, the tray assembly comprises a slewing portion arranged in the middle and a plurality of support arms extending outward from the slewing portion, the slewing support is installed on the bottom of the slewing portion, a positioning cylinder is arranged on the top of the end of the support arm away from the slewing portion, and a limiting lug is arranged on the top of the positioning cylinder.

[0014] Preferably, the slewing driving unit comprises a servo motor and a speed reducer, a position sensor for detecting the position of the tray assembly is arranged on the slewing table, the servo motor is connected with the driving gear through the speed reducer, and the servo motor drives the driving gear to rotate or stop according to the detection signal of the position sensor.

[0015] Preferably, a plurality of position sensors are arranged around the slewing support on the slewing table.

[0016] Preferably, two lifting slide rails are arranged side by side on the support structure, and a first reinforcing rib is arranged on the side of the support structure away from the lifting slide rails and corresponding to the lifting slide rails.

[0017] Preferably, a second reinforcing rib is arranged on the side of the lifting slide table close to the lifting cylinder.

[0018] In the utility model, the tray slewing positioning device for small space is provided, the slewing driving unit is installed on the lifting slide table, the driving gear is installed on the output shaft of the slewing driving unit, the slewing table is installed on the top of the lifting slide table, the slewing support is rotatably installed on the slewing table through a bearing, an outer tooth portion meshing with the driving gear is arranged on the outer periphery of the slewing support, the radius of the driving gear is smaller than the radius of the outer tooth portion, and the tray assembly is installed on the slewing support. Through the above-mentioned optimized tray slewing positioning device, the slewing is realized through the cooperation of the driving gear and the slewing support, the rotation angle is free, and the rotation precision is ensured. Meanwhile, the slewing driving unit is arranged on the side, and the space utilization is greatly improved. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of one embodiment of a pallet rotation and positioning device for small spaces proposed in this utility model.

[0020] Figure 2 This is a schematic diagram showing the arrangement of the lifting cylinder and the rotary drive unit in one embodiment of the pallet rotation positioning device for small spaces proposed in this utility model.

[0021] Figure 3 This is a schematic diagram of the lifting component in one embodiment of a pallet rotation and positioning device for small spaces proposed in this utility model.

[0022] Figure 4 This is a schematic diagram of the structure of the rotary component in one embodiment of the pallet rotary positioning device for small spaces proposed in this utility model.

[0023] Figure 5 This is a schematic diagram of the pallet assembly in one embodiment of a pallet rotation and positioning device for small spaces proposed in this utility model. Detailed Implementation

[0024] Reference Figure 1 and 2 The present invention proposes a pallet rotation and positioning device for small spaces, comprising: a base 1, a lifting assembly, a rotation assembly and a pallet assembly 4;

[0025] The base 1 is provided with a support structure 12 with a vertically extending lifting slide rail 11. The lifting assembly includes a lifting slide 21 and a lifting cylinder 22. The lifting slide 21 is slidably mounted on the base 1 via the lifting slide rail 11. The lifting cylinder 22 is mounted on the base 1 and its output end is connected to the lifting slide 21.

[0026] The rotary assembly includes a rotary drive unit 32, a rotary table 31, a drive gear 33, and a rotary support 34. The rotary drive unit 32 is mounted on the lifting slide 21, the drive gear 33 is mounted on the output shaft of the rotary drive unit 32, the rotary table 31 is mounted on the top of the lifting slide 21, and the rotary support 34 is rotatably mounted on the rotary table 31 via bearings. The rotary support 34 has an external toothed portion on its outer periphery that meshes with the drive gear 33. The radius of the drive gear 33 is smaller than the radius of the external toothed portion. The tray assembly 4 is mounted on the rotary support 34.

[0027] In the specific working process of the tray rotating positioning device for small space of the embodiment, the component body to be assembled is placed on the tray assembly; during lifting, the lifting cylinder pushes the lifting sliding table to move up and down along the lifting sliding rail, so that the component body on the tray assembly is located at a preset height; during rotating, the rotating drive unit drives the rotating support to rotate through the driving gear, thereby driving the component body to rotate with the bracket assembly. The small-size driving gear drives the large-size rotating support to rotate, which can accurately control the rotating angle of the component body, so that the component body is located at a preset rotating angle.

[0028] In the embodiment, the tray rotating positioning device for small space is provided, the rotating drive unit is installed on the lifting sliding table, the driving gear is installed on the output shaft of the rotating drive unit, the rotating table is installed on the top of the lifting sliding table, the rotating support is rotatably installed on the rotating table through the bearing, the outer periphery of the rotating support is provided with an outer tooth portion meshing with the driving gear, the radius of the driving gear is smaller than the radius of the outer tooth portion, and the tray assembly is installed on the rotating support. Through the above-optimized tray rotating positioning device, the rotating is realized through the cooperation of the driving gear and the rotating support, the rotating angle is free, and the rotating precision is ensured; at the same time, the rotating drive unit is installed on the side, which greatly improves the space utilization.

[0029] In the specific embodiment, with reference to Figure 2 The tray rotating positioning device of the embodiment further includes an anti-falling assembly, the anti-falling assembly includes an anti-falling cylinder 51 and a limiting piece, the anti-falling cylinder 51 is installed on the base 1, the output shaft of the anti-falling cylinder 51 horizontally extends and the limiting piece is installed on the output shaft for limiting the lifting sliding table 21. The anti-falling cylinder 51 extends after the lifting sliding table is lifted into position, which prevents the lifting sliding table from falling due to the failure of the lifting cylinder.

[0030] With reference to Figure 3 In other specific embodiments, the base 1 is provided with a plurality of adjusting feet 13 at the bottom. In actual design, the adjusting feet adopt an adjustable bolt structure, the height of the welded base is adjusted to adapt to different height work lines by adjusting the length of the adjusting bolt, and the adjusting bolt can be finely adjusted at the corresponding position to ensure the parallelism of the tray.

[0031] In a specific embodiment, the lifting cylinder 22 and the rotating drive unit 32 are respectively located on both sides of the support structure 12, as shown in Figure 2 which balances the counterweights on both sides of the entire device to ensure stable lifting.

[0032] In the specific design of the tray assembly, with reference to Figure 5, the tray assembly 4 comprises a rotating part in the middle and a plurality of support arms 41 extending outward from the rotating part, the rotating support 34 is installed at the bottom of the rotating part, and the positioning cylinder 42 is arranged at the top of the end of the support arm 41 away from the rotating part, and the limiting block 43 is arranged at the top of the positioning cylinder 42. Through the design of the rotating part and the support arm, the positioning cylinder 42 and the limiting block 43 at the end of the support arm are positioned, and the main load is also distributed on the upper part of the four support arms, so that the middle section except this part can be grooved, thereby realizing the reduction of cost and weight as much as possible without affecting the structure. In the actual design of the limiting block, diamond, triangle or other polygonal structures can be used.

[0033] In the specific embodiment of the rotating drive unit, the rotating drive unit 32 comprises a servo motor and a speed reducer, the rotating table 31 is provided with a position sensor 6 for detecting the position of the tray assembly 4, the servo motor is connected with the driving gear 33 through the speed reducer and drives the driving gear 33 to rotate / stop according to the detection signal of the position sensor 6. Through the cooperation of the servo motor and the speed reducer, the rotation angle of the driving gear can be accurately controlled according to the signal of the position sensor, so as to ensure the accurate control of the rotation of the rotating support.

[0034] In the actual design, reference is made to Figure 4 The rotating table 31 is provided with a plurality of position sensors 6 arranged around the rotating support. The servo motor can realize multi-position rotation, and the sensors can be added at different positions to realize multi-position detection function.

[0035] In order to ensure the lifting reliability of the whole device, two lifting slide rails 11 are arranged side by side on the support structure 12, and the first reinforcing rib 71 is arranged on the side of the support structure 12 away from the lifting slide rail 11. Similarly, the second reinforcing rib 72 is arranged on the side of the lifting slide table 21 close to the lifting cylinder 22. The first reinforcing rib and the second reinforcing rib can adopt a triangular supporting plate structure. The two sides of the first reinforcing rib are connected with the side surface of the support structure and the top surface of the base respectively. The lifting slide table can adopt an L-shaped structure, and the two sides of the second reinforcing rib are connected with the two sides of the L-shaped lifting slide table respectively.

[0036] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A tray rotation positioning device for small spaces, characterized by, include: Base (1), lifting assembly, slewing assembly and tray assembly (4); The base (1) is provided with a support structure (12) with a vertically extending lifting slide rail (11). The lifting assembly includes a lifting slide (21) and a lifting cylinder (22). The lifting slide (21) is slidably mounted on the base (1) via the lifting slide rail (11). The lifting cylinder (22) is mounted on the base (1) and its output end is connected to the lifting slide (21). The rotary assembly includes a rotary drive unit (32), a rotary table (31), a drive gear (33), and a rotary support (34). The rotary drive unit (32) is mounted on the lifting slide (21), the drive gear (33) is mounted on the output shaft of the rotary drive unit (32), the rotary table (31) is mounted on the top of the lifting slide (21), and the rotary support (34) is rotatably mounted on the rotary table (31) via bearings. The rotary support (34) has an external toothed portion on its outer periphery that meshes with the drive gear (33). The radius of the drive gear (33) is smaller than the radius of the external toothed portion. The tray assembly (4) is mounted on the rotary support (34).

2. The pallet rotation and positioning device for small spaces according to claim 1, characterized in that, It also includes a fall protection assembly, which includes a fall protection cylinder (51) and a limiting member. The fall protection cylinder (51) is mounted on the base (1). The output shaft of the fall protection cylinder (51) extends horizontally and the limiting member is mounted on the output shaft for limiting the lifting slide (21).

3. The pallet rotation and positioning device for small spaces according to claim 1, characterized in that, The base (1) has multiple adjustable feet (13) at the bottom.

4. The pallet rotation and positioning device for small spaces according to claim 1, characterized in that, The lifting cylinder (22) and the rotary drive unit (32) are located on both sides of the support structure (12).

5. The pallet rotation and positioning device for small spaces according to claim 1, characterized in that, The pallet assembly (4) includes a rotating part located in the middle and a plurality of support arms (41) extending outward from the rotating part. A rotating support (34) is installed at the bottom of the rotating part. A positioning cylinder (42) is provided at the top of the end of the support arm (41) away from the rotating part. A limiting protrusion (43) is provided at the top of the positioning cylinder (42).

6. The pallet rotation and positioning device for small spaces according to claim 1, characterized in that, The rotary drive unit (32) includes a servo motor and a reducer. The rotary table (31) is equipped with a position sensor (6) for detecting the position of the tray assembly (4). The servo motor is connected to the drive gear (33) through the reducer and drives the drive gear (33) to rotate / stop according to the detection signal of the position sensor (6).

7. The pallet rotation and positioning device for small spaces according to claim 6, characterized in that, The rotary table (31) is equipped with multiple position sensors (6) arranged around the rotary support.

8. The pallet rotation and positioning device for small spaces according to claim 1, characterized in that, The support structure (12) is provided with two lifting slide rails (11) arranged side by side, and the support structure (12) is provided with a first reinforcing rib (71) arranged corresponding to the lifting slide rail (11) on the side away from the lifting slide rail (11).

9. The pallet rotation and positioning device for small spaces according to claim 1, characterized in that, The lifting slide (21) is provided with a second reinforcing rib (72) on the side near the lifting cylinder (22).

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