Flexible fork mechanism

Abstract

The present application relates to a kind of flexible fork mechanism, including support and intermediate plate, linear guide rail assembly, slider drive assembly are fixed on support, base plate is fixed on the slider of linear guide rail assembly;Left and right rotary seats are fixed on the front side of intermediate plate, left supporting plate is hinged on left rotary seat, left limiting screw is installed in the lower end of the rear side of left supporting plate, right supporting plate is hinged on right rotary seat, right limiting screw is installed in the lower end of the rear side of right supporting plate;Round fixed pin hole and circular-arc shaped tightening screw groove are opened in intermediate plate, round fixed pin is fixed on the front side of base plate, tightening screw hole is opened in the front side of base plate, intermediate plate and base plate are fixed together by tightening screw, intermediate plate rotation fine adjustment drive assembly is installed on intermediate plate and base plate.The present application can adapt to the manufacturing and installation error of fork mechanism, without disassembling or repairing parts in the adjustment process, simple and reliable structure, adjustment and maintenance are convenient.

Description

Technical Field

[0001] This invention relates to a fork mechanism for use in the logistics field, specifically a flexible fork mechanism. Background Technology

[0002] With the continuous development of the machinery industry, automated processing is becoming increasingly common. Automated loading and unloading are often required when processing workpieces. However, when using a forklift mechanism for loading and unloading, installation errors, manufacturing errors, and elastic deformation of the forklift can cause workpiece misalignment, resulting in the workpiece getting stuck on the locating pins of the fixture. Therefore, during on-site debugging, it is necessary to regrind or grind the parts of the forklift mechanism according to the site conditions. Disassembling the forklift mechanism on the production site is time-consuming and labor-intensive, as the amount of regrinding is difficult to control and requires repeated disassembly, reassembly, and debugging. For compatible workpieces, repeated disassembly and replacement are even more necessary, leading to excessively long changeover times and impacting production. Therefore, a flexible forklift mechanism is needed to simplify the debugging process, reduce on-site debugging workload, and adapt to compatible workpieces. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a flexible fork mechanism that can simplify the debugging process and reduce the workload of on-site debugging.

[0004] According to the technical solution provided by the present invention, the flexible fork mechanism includes a bracket and an intermediate plate. A linear guide rail assembly is fixed on the bracket, and a slider drive assembly is installed on the bracket. A base plate is fixed on the slider of the linear guide rail assembly. A left rotary seat and a right rotary seat are fixed on the front side of the intermediate plate. A left support plate is hinged to the left rotary seat via a left pin. A left support bar and a left guide pin are fixed to the upper surface of the front end of the left support plate. A left limit screw is installed at the lower end of the rear side of the left support plate. A right support plate is hinged to the right rotary seat via a right pin. A right support bar and a right guide pin are fixed to the upper surface of the front end of the right support plate. A right limit screw is installed at the lower end of the rear side of the right support plate.

[0005] A circular fixing pin hole and an arc-shaped tightening screw groove are provided on the intermediate plate. The tightening screw groove and the fixing pin hole are concentrically arranged. A circular fixing pin is fixed on the front side of the substrate. A tightening screw hole that mates with the tightening screw groove is provided on the front side of the substrate. The fixing pin is embedded in the fixing pin hole on the intermediate plate. The intermediate plate and the substrate are fixed together by tightening screws. The tightening screws pass through the tightening screw groove and are tightened in the tightening screw hole. An intermediate plate rotation fine adjustment drive assembly is installed on the intermediate plate and the substrate.

[0006] Preferably, the slider drive assembly includes a motor reducer assembly and a lead screw assembly mounted on a bracket; the output shaft of the motor reducer assembly is connected to the lead screw in the lead screw assembly via a coupling, and the lead screw nut in the lead screw assembly is fixed to the slider of the linear guide rail assembly.

[0007] Preferably, the intermediate plate rotation fine-tuning drive assembly includes an adjusting screw, an adjusting plate, and a movable pin; a movable pin hole is provided in the intermediate plate, a movable pin is installed in the movable pin hole, and an adjusting screw hole is provided in the middle of the movable pin; the adjusting plate is fixed on the base plate, and the adjusting plate has a slot, through which the adjusting screw passes and is threaded to the middle of the movable pin.

[0008] The present invention has the following advantages:

[0009] 1. This invention can adapt to manufacturing and installation errors of the fork mechanism, realize stable lifting and lowering of workpieces, and achieve automated loading and unloading.

[0010] 2. During the adjustment process, the present invention does not require disassembly or repair of parts, but only requires adjustment of the posture of the fork mechanism, which reduces the difficulty and workload of on-site debugging.

[0011] 3. The present invention has a simple and reliable structure and is easy to adjust and maintain. Attached Figure Description

[0012] Figure 1 This is a perspective view of the present invention.

[0013] Figure 2 This is the front view of the present invention.

[0014] Figure 3 yes Figure 2 Enlarged AA section view.

[0015] Figure 4 This is the left view of the present invention.

[0016] Figure 5 This is the left view of the invention when the left and right pallets deform under the gravity of the workpiece.

[0017] Figure 6 This is a front view of the present invention when the support is tilted to the right after assembly.

[0018] Figure 7 This is a front view of the present invention when the support is tilted to the left after assembly. Detailed Implementation

[0019] The present invention will be further described below with reference to specific embodiments.

[0020] The flexible fork mechanism of the present invention, such as Figure 1-4As shown, the system includes a bracket 1 and an intermediate plate 15. A linear guide rail assembly 3 is fixed on the bracket 1, and a slider drive assembly is installed on the bracket 1. A base plate 4 is fixed on the slider of the linear guide rail assembly 3. A left rotary seat 16 and a right rotary seat 5 are fixed on the front side of the intermediate plate 15. A left support plate 12 is hinged to the left rotary seat 16 via a left pin 13. A left support bar 10 and a left guide pin 11 are fixed on the upper surface of the front end of the left support plate 12. A left limit screw 14 is installed on the lower end of the rear side of the left support plate 12. A right support plate 7 is hinged to the right rotary seat 5 via a right pin 6. A right support bar 9 and a right guide pin 8 are fixed on the upper surface of the front end of the right support plate 7. A right limit screw 24 is installed on the lower end of the rear side of the right support plate 7.

[0021] A circular fixing pin hole and an arc-shaped tightening screw groove are provided on the intermediate plate 15. The tightening screw groove and the fixing pin hole are concentrically arranged. A circular fixing pin 22 is fixed on the front side of the substrate 4. A tightening screw hole that mates with the tightening screw groove is provided on the front side of the substrate 4. The fixing pin 22 is embedded in the fixing pin hole on the intermediate plate 15. The intermediate plate 15 and the substrate 4 are fixed together by tightening screws 23. The tightening screws 23 pass through the tightening screw groove and are tightened in the tightening screw hole. An intermediate plate rotation fine adjustment drive assembly is installed on the intermediate plate 15 and the substrate 4.

[0022] The slider drive assembly includes a motor reducer assembly 2 and a lead screw assembly 25 mounted on the bracket 1; the output shaft of the motor reducer assembly 2 is connected to the lead screw in the lead screw assembly 25 through a coupling, and the lead screw nut in the lead screw assembly 25 is fixed to the slider of the linear guide rail assembly 3.

[0023] The intermediate plate rotation fine-tuning drive assembly includes an adjusting screw 17, an adjusting plate 18, and a movable pin 19. A movable pin hole is provided on the intermediate plate 15, and a movable pin 19 is installed in the movable pin hole. An adjusting screw hole is provided in the middle of the movable pin 19. The adjusting plate 18 is fixed on the base plate 4. The adjusting plate 18 has a slot. The adjusting screw 17 passes through the slot on the adjusting plate 18 and is threaded to the middle of the movable pin 19.

[0024] The flexible fork mechanism of this invention is fixed to a telescopic platform. After loading and unloading, the telescopic platform drives the flexible fork mechanism to exit the machine tool, and the machine tool begins processing. The bracket 1 is fixed to the sliding block of the telescopic platform by screws. The motor reducer assembly 2 is connected to the bracket 1 by screws. The guide rail assembly 3 is installed on the side of the bracket 1. The base plate 4 is connected to the slider in the guide rail assembly 3 by screws, and is also connected to the lead screw nut in the lead screw assembly 25 by screws. The motor reducer assembly 2 drives the lead screw in the lead screw assembly 25 to rotate, thereby driving the base plate 4 to move up and down along the guide of the linear guide rail assembly 3. The fixing pin 22 is fixed to the base plate 4 and hinged to the intermediate plate 15 through the fixing pin hole on the intermediate plate 15. The intermediate plate 15 is fastened to the base plate 4 by three tightening screws 23. The right rotary seat 5 and the left rotary seat 16 are connected to the intermediate plate 15 by keys and screws. The right support plate 7 is hinged to the right rotary seat 5 by the right pin 6. The right limit screw 24 is used to adjust the angle of the right support plate 7. The left support plate 12 is hinged to the left rotary seat 16 via the left pin 13. The left limit screw 14 is used to adjust the angle of the left support plate 12.

[0025] The right guide pin 8 and right support bar 9 are connected to the right support plate 7 by screws. The left support bar 10 and left guide pin 11 are connected to the support plate 12 by screws. The movable pin 19 has an adjusting screw hole in the middle, which is an internally threaded hole. The movable pin 19 is hinged to the intermediate plate 15 through the movable pin hole on the intermediate plate 15. The adjusting plate 18 is fixed to the base plate 4 by screws. The adjusting screw 17 passes through the slot on the adjusting plate 18, so that the adjusting screw 17 can only rotate. The adjusting screw 17 is connected to the adjusting screw hole in the middle of the movable pin 19. After rotating the adjusting screw 17, the adjusting screw drives the movable pin 19 to rise and fall, thereby driving the intermediate plate 15 to rotate around the fixed pin 22. The movable pin 19 can rotate within the movable pin hole, thereby avoiding motion interference. The right guide pin 8 and left guide pin 11 are used to guide and limit the workpiece, ensuring that the workpiece smoothly enters and exits the pin, and preventing the workpiece from slipping off the fork mechanism.

[0026] When the flexible fork mechanism of the present invention lifts the workpiece 100 and disengages it from the positioning pin of the clamp, the left support plate 12 and the right support plate 7 deform under the gravity of the workpiece 100 (e.g., Figure 5 As shown), the bracket is tilted to the right after assembly (as shown). Figure 6 As shown), the bracket tilts to the left after assembly (as shown). Figure 7Due to reasons such as (as shown), the right support bar 9 and left support bar 10 cannot fully fit with the workpiece 100, causing the workpiece 100 to tilt and jam against the positioning pin of the clamp when it is raised, preventing it from successfully disengaging from the pin. Therefore, the fork mechanism needs to be adjusted to ensure that the workpiece 100 can be raised vertically and disengaged smoothly from the pin. If the workpiece 100 is not level in the left-right direction when it is raised, the middle plate 15 is rotated by rotating the adjusting screw 17 to keep the right support bar 9 and left support bar 10 level in the left-right direction. If the workpiece 100 is not level in the front-back direction, the left limit screw 14 is adjusted to rotate the left support plate 12 around the pin hole of the left swivel seat 16 to keep the left support bar 10 level in the front-back direction; the right limit screw 24 is adjusted to rotate the right support plate 7 around the pin hole of the right swivel seat 5 to keep the right support bar 9 level in the front-back direction, thereby ensuring that the left support bar 10 and right support bar 9 are level in the front-back direction. By adjusting the right support bar 9 and the left support bar 10 in the left-right and front-back directions, the right support bar 9 and the left support bar 10 are kept level when the fork mechanism is raised, so that the workpiece 100 can be smoothly disengaged from the fixture positioning pin.

[0027] The working principle of this invention is as follows: Based on mechanical transmission and mechanism freedom constraints, this invention sets the left support bar 10 and the right support bar 9 in two rotational directions. By adjusting these two angles, the installation error, manufacturing error and gravity influence of the workpiece 100 are eliminated, ensuring that the workpiece 100 can smoothly enter and exit the pin.

Claims

1. A flexible fork mechanism, comprising a bracket (1) and an intermediate plate (15), a linear guide assembly (3) fixed on the bracket (1), a slider drive assembly mounted on the bracket (1), and a base plate (4) fixed on the slider of the linear guide assembly (3); a left rotary seat (16) and a right rotary seat (5) fixed on the front side of the intermediate plate (15), a left support plate (12) hinged on the left rotary seat (16) via a left pin (13), a left support bar (10) and a left guide pin (11) fixed on the upper surface of the front end of the left support plate (12), a left limit screw (14) mounted on the lower end of the rear side of the left support plate (12), a right support plate (7) hinged on the right rotary seat (5) via a right pin (6), a right support bar (9) and a right guide pin (8) fixed on the upper surface of the front end of the right support plate (7), and a right limit screw (24) mounted on the lower end of the rear side of the right support plate (7). Its characteristics are: A circular fixing pin hole and an arc-shaped tightening screw groove are provided on the intermediate plate (15). The tightening screw groove and the fixing pin hole are concentrically arranged. A circular fixing pin (22) is fixed on the front side of the substrate (4). A tightening screw hole that mates with the tightening screw groove is provided on the front side of the substrate (4). The fixing pin (22) is embedded in the fixing pin hole on the intermediate plate (15). The intermediate plate (15) and the substrate (4) are fixed together by tightening screws (23). The tightening screws (23) pass through the tightening screw groove and are tightened in the tightening screw hole. An intermediate plate rotation fine adjustment drive assembly is installed on the intermediate plate (15) and the substrate (4).

2. The flexible fork mechanism as described in claim 1, characterized in that: The slider drive assembly includes a motor reducer assembly (2) and a lead screw assembly (25) mounted on a bracket (1); the output shaft of the motor reducer assembly (2) is connected to the lead screw in the lead screw assembly (25) via a coupling, and the lead screw nut in the lead screw assembly (25) is fixed to the slider of the linear guide assembly (3).

3. The flexible fork mechanism as described in claim 1, characterized in that: The intermediate plate rotation fine-tuning drive assembly includes an adjusting screw (17), an adjusting plate (18), and a movable pin (19). A movable pin hole is provided on the intermediate plate (15), and a movable pin (19) is installed in the movable pin hole. An adjusting screw hole is provided in the middle of the movable pin (19). The adjusting plate (18) is fixed on the base plate (4). The adjusting plate (18) has a slot. The adjusting screw (17) passes through the slot on the adjusting plate (18) and is threaded to the middle of the movable pin (19).

Images