A flip positioning mechanism

Abstract

This utility model discloses a flipping and positioning mechanism, including a fixed frame and a fixed fixture, a flipping assembly, and a locking assembly disposed on the fixed frame. The fixed fixture is used to support and fix the product to be processed, and is rotatably connected to the fixed frame via a rotating shaft. The flipping assembly includes a flipping cylinder that is kinetically connected to the rotating shaft, and is used to drive the rotating shaft to rotate so as to flip the fixed fixture. The locking assembly includes a locking cylinder fixed on the fixed frame, and a pin is connected to the output end of the locking cylinder. A positioning hole for the pin to be inserted is provided at the end of the fixed fixture away from the rotating shaft, and the output axis of the locking cylinder and the axis of the positioning hole are perpendicular to the axis of the rotating shaft. The technical solution of this utility model aims to improve the positioning accuracy and tooling stability during workpiece flipping and pressing.

Description

Technical Field

[0001] This utility model relates to the field of positioning mechanism technology, and in particular to a flipping positioning mechanism. Background Technology

[0002] In fields such as machining and automated assembly, when performing multi-faceted machining or press-fitting on workpieces, it is often necessary to use a flipping and positioning mechanism to flip the workpiece from its initial position to the target position and fix it precisely.

[0003] Existing flipping positioning mechanisms mostly rely on ordinary cylinders to directly drive the rotating shaft. The positioning function of the cylinders alone is used to lock the tooling position. However, due to air pressure fluctuations or mechanical clearances, the angle of the tooling after flipping is easily deviated, which cannot meet the positioning requirements of high-precision machining. The locking structure mostly uses manual pins or simple pneumatic devices, which are prone to tooling displacement due to external forces. Moreover, due to the poor positioning of the mechanism itself, it is prone to shaking under heavy load conditions, which further reduces the stability of the tooling. Summary of the Invention

[0004] The main purpose of this utility model is to provide a flipping and positioning mechanism, which aims to improve the positioning accuracy and tooling stability during workpiece flipping and pressing.

[0005] To achieve the above objectives, the present invention proposes a flipping positioning mechanism, which includes a fixed frame and a fixing fixture, a flipping component, and a locking component disposed on the fixed frame.

[0006] The fixing fixture is used to support and fix the product to be processed, and the fixing fixture is rotatably connected to the fixing frame via a rotating shaft;

[0007] The flipping assembly includes a flipping cylinder that is driven to the rotating shaft. The flipping assembly is used to drive the rotating shaft to rotate so as to flip the fixed tooling.

[0008] The locking assembly includes a locking cylinder fixed on the fixing frame, and the output end of the locking cylinder is connected to a pin;

[0009] The fixed fixture has a positioning hole at the end away from the rotating shaft for the pin to be inserted. The output axis of the locking cylinder and the axis of the positioning hole are perpendicular to the axis of the rotating shaft.

[0010] In some embodiments of this utility model, the flipping positioning mechanism further includes a flipping support assembly, which includes a shaft support seat sleeved on the outside of the rotating shaft, and the shaft support seat is fixedly installed on the fixed frame;

[0011] The shaft support is equipped with a rolling bearing, and the rotating shaft passes through the inner ring of the rolling bearing and is fixedly connected to the inner ring.

[0012] In some embodiments of this utility model, the fixing fixture includes a flipping frame and a fixing component fixed to the flipping frame. The fixing component has at least one vacuum adsorption hole, which is connected to an external vacuum generator through an air passage.

[0013] In some embodiments of this utility model, elastic components that abut against the fixing fixture are provided on both sides of the fixing frame that are perpendicular to the axis of the rotating shaft.

[0014] When the elastic component is compressed, the output axis of the locking cylinder coincides with the axis of the positioning hole.

[0015] In some embodiments of this utility model, the elastic component includes a fixed cavity, a compression spring, and an abutment. The fixed cavity is fixed to the fixed frame, the compression spring is disposed in the fixed cavity, one end of the abutment is disposed in the fixed cavity and connected to the compression spring, and the other end of the abutment is located outside the fixed cavity for abutting against the fixed fixture.

[0016] In some embodiments of this utility model, the tilting cylinder is a rotary cylinder, the output end of the rotary cylinder is fixedly connected to one end of the rotary shaft, and the rotation axis of the tilting cylinder coincides with the axis of the rotary shaft.

[0017] In some embodiments of this utility model, the locking cylinder is a pneumatic linear cylinder, and the extension and retraction direction of the piston rod of the linear cylinder is consistent with the axial direction of the positioning hole; the length of the pin is greater than the depth of the positioning hole.

[0018] In some embodiments of this utility model, there are two shaft support seats, and the two ends of the rotating shaft are respectively inserted through the shaft support seats.

[0019] In some embodiments of this utility model, the number of positioning holes and the number of pins are two or more, and the positioning holes and the pins are fitted in a one-to-one correspondence.

[0020] This utility model's technical solution provides rigid support for each component through a fixed frame. The fixed fixture carries the product and is rotatably connected to the fixed frame via a rotating shaft to achieve the flipping base. In the flipping assembly, the flipping cylinder drives the rotating shaft to rotate the fixed fixture 180°. In the locking assembly, the locking cylinder's pin is embedded in the positioning hole to form a mechanical lock. The combination of these four components enables the mechanism to achieve a closed loop of "support-drive-flip-locking," solving the problem of low load-bearing capacity in existing technologies and allowing it to withstand greater pressing forces. Through the rigid cooperation between the pin and the positioning hole and the precise drive of the cylinder, the structural stability and positioning accuracy are improved, and fixture offset is avoided. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 This is one of the structural schematic diagrams of the reversing positioning mechanism of this utility model;

[0023] Figure 2 This is the second structural schematic diagram of the reversing positioning mechanism of this utility model.

[0024] Explanation of icon numbers:

[0025] 100. Fixture; 200. Fixture tooling; 210. Positioning hole; 300. Rotating shaft; 400. Tilting cylinder; 500. Locking cylinder; 510. Pin; 600. Shaft support; 700. Vacuum suction hole; 800. Elastic component; 810. Fixing cavity; 820. Abutment part;

[0026] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0029] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, the user should consider such a combination of technical solutions to be non-existent and not within the scope of protection claimed by this utility model.

[0030] See appendix Figure 1-2 This utility model proposes a flipping positioning mechanism, including a fixed frame 100 and a fixed fixture 200, a flipping component, and a locking component disposed on the fixed frame 100;

[0031] The fixed fixture 200 is used to support and fix the product to be processed. The fixed fixture 200 is rotatably connected to the fixed frame 100 via the rotating shaft 300.

[0032] The flipping assembly includes a flipping cylinder 400 that is connected to the rotating shaft 300 for transmission. The flipping assembly is used to drive the rotating shaft 300 to rotate so as to flip the fixed tooling 200.

[0033] The locking assembly includes a locking cylinder 500 fixed on the mounting bracket 100, and a pin 510 is connected to the output end of the locking cylinder 500.

[0034] The fixed fixture 200 is provided with a positioning hole 210 for the pin 510 to be inserted at one end away from the rotating shaft 300. The output axis of the locking cylinder 500 and the axis of the positioning hole 210 are perpendicular to the axis of the rotating shaft 300.

[0035] Based on the above technical features, the fixed frame 100 provides rigid support for each component. At the same time, the fixed fixture 200 carries the product and is rotatably connected to the fixed frame 100 through the rotating shaft 300 to achieve the flipping base. The flipping cylinder 400 in the flipping assembly drives the rotating shaft 300 to drive the fixed fixture 200 to complete a 180° flip. The pin 510 of the locking cylinder 500 in the locking assembly is embedded in the positioning hole 210 to form a mechanical lock. The combination of the four components enables the mechanism to achieve a closed loop of "support-drive-flip-locking", which can withstand a large pressing force. Through the rigid cooperation between the pin 510 and the positioning hole 210 and the precise drive of the cylinder, the stability and positioning accuracy of the structure are improved, and the offset of the fixture is avoided.

[0036] The flipping positioning mechanism also includes a flipping support assembly, which includes a shaft support seat 600 sleeved on the outside of the rotating shaft 300 and fixedly mounted on the fixed frame 100. The shaft support seat contains a rolling bearing, through which the rotating shaft 300 passes and is fixedly connected. In the flipping support assembly, the shaft support seat 600 is fixed to the fixed frame 100 and sleeves the rotating shaft 300. The internal rolling bearing is fixedly connected to the rotating shaft 300. The low-friction characteristic of the rolling bearing reduces the resistance to flipping. The support structures at both ends of the shaft support seat 600 enhance the rotational stability of the rotating shaft 300, reduce swaying under heavy loads, and further improve the accuracy and load-bearing capacity of the mechanism during flipping and pressing, ensuring smooth rotation of the rotating shaft 300 and avoiding angular deviations caused by insufficient support.

[0037] Furthermore, the fixed fixture 200 includes a tilting frame and a fixing component fixed to the tilting frame. The fixing component has at least one vacuum adsorption hole 700, which is connected to an external vacuum generator through an air passage. The tilting frame of the fixed fixture 200 is connected to a rotating shaft 300, which drives the fixing component to tilt. After the vacuum adsorption hole 700 of the fixing component is connected to the vacuum generator, it generates a uniform adsorption force on the product, preventing the product from shifting during tilting and pressing. This forms a dual fixation of "adsorption fixation and mechanical locking," improving the product's fixation reliability, adapting to different workpieces, and enhancing the stability and positioning accuracy of the mechanism during processing.

[0038] Specifically, elastic components 800 are provided on both sides of the fixed frame 100 perpendicular to the axis of the rotating shaft 300, abutting against the fixed fixture 200. When the elastic components 800 are compressed, the output axis of the locking cylinder 500 coincides with the axis of the positioning hole 210. The elastic components 800 on both sides of the fixed frame 100 are compressed when the fixed fixture 200 is flipped into place. The elastic force abuts against the fixture to achieve pre-positioning and buffering of the flipping, compensating for machining errors. This ensures that the axis of the locking cylinder 500 pin 510 and the positioning hole 210 are precisely aligned, absorbing external impacts and avoiding displacement caused by rigid collisions of the fixture. This further improves the insertion accuracy of the pin 510, enhances the mechanism's resistance to external interference, and ensures the positional accuracy of the positioning hole 210 when it mates with the pin 510.

[0039] In this embodiment, the elastic component 800 includes a fixed cavity 810, a compression spring, and a stop member 820. The fixed cavity 810 is fixed to the fixed frame 100. The compression spring is disposed within the fixed cavity 810. One end of the stop member 820 is disposed within the fixed cavity 810 and connected to the compression spring. The other end of the stop member 820 is located outside the fixed cavity 810 and is used to abut against the fixed fixture 200. The fixed cavity 810 of the elastic component 800 is fixed to the fixed frame 100. The compression spring abuts against the fixture within the cavity through the stop member 820. The compression spring adaptively adjusts the abutment force to compensate for the positional deviation of the fixture. The fixed cavity 810 protects the spring structure, and the stop member 820 optimizes force transmission, enabling the elastic component 800 to more stably pre-position and buffer the fixture, improving the adaptability of the mechanism under different working conditions, ensuring the long-term reliability of the elastic component 800, and enhancing the positional stability of the fixture during flipping and pressing.

[0040] The tilting cylinder 400 is a rotary cylinder, with its output end fixedly connected to one end of the rotating shaft 300. The axis of the rotating shaft 300 of the tilting cylinder 400 coincides with the axis of the rotating shaft 300. The high precision of the rotary cylinder allows for accurate control of the tilting angle, and the coincidence of the axes avoids rotational deviations caused by torque eccentricity, improving the accuracy and repeatability of the tilting action. This results in a smaller angular error after the fixed fixture 200 is tilted into place, enhancing the embedding stability of the subsequent pin 510 into the positioning hole 210 and meeting the positioning requirements of high-precision machining.

[0041] Furthermore, the locking cylinder 500 is a pneumatic linear cylinder, and the extension and retraction direction of the piston rod of the linear cylinder is consistent with the axial direction of the positioning hole 210; the length of the pin 510 is greater than the depth of the positioning hole 210. The locking cylinder 500 is a pneumatic linear cylinder, the extension and retraction direction of the piston rod is consistent with the axis of the positioning hole 210, and the length of the pin 510 is greater than the depth of the positioning hole 210 to form an interference fit. The linear cylinder quickly and accurately drives the pin 510 to insert into the positioning hole 210. The interference fit enhances the locking force and prevents the pin 510 from loosening, achieving rapid and rigid locking after the tooling is flipped, improving locking reliability, and ensuring that the tooling does not shift when the mechanism is subjected to large pressing forces.

[0042] In this embodiment, there are two shaft support seats 600, with each end of the rotating shaft 300 correspondingly inserted into one of the shaft support seats 600. The two shaft support seats 600 respectively pass through both ends of the rotating shaft 300, forming a two-end support structure. This disperses the load borne by the rotating shaft 300, reduces bending deformation, limits the radial and axial displacement of the rotating shaft 300, enhances the stability of the rotating shaft 300, and ensures the rigidity of the rotating shaft 300 during heavy-duty press-fitting. This prevents tooling wobbling due to insufficient support, improves the structural strength and load-bearing capacity of the entire mechanism, and ensures accurate flipping and positioning.

[0043] Preferably, there are two or more positioning holes 210 and pins 510, and the positioning holes 210 and pins 510 are fitted one-to-one; forming a multi-point positioning structure, increasing the locking contact area and locking force, dispersing the external force during pressing, and ensuring the stability of the tooling even if some positioning points are worn, improving the positioning redundancy of the mechanism, enhancing the pressing reliability of the mechanism under complex working conditions, and ensuring that the tooling is accurately positioned and stably withstands a large pressing force after flipping.

[0044] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A flipping positioning mechanism, characterized in that, Includes a fixed frame and a fixing fixture, a flipping assembly, and a locking assembly disposed on the fixed frame; The fixing fixture is used to support and fix the product to be processed, and the fixing fixture is rotatably connected to the fixing frame via a rotating shaft; The flipping assembly includes a flipping cylinder that is driven to the rotating shaft. The flipping assembly is used to drive the rotating shaft to rotate so as to flip the fixed tooling. The locking assembly includes a locking cylinder fixed on the fixing frame, and the output end of the locking cylinder is connected to a pin; The fixed fixture has a positioning hole at the end away from the rotating shaft for the pin to be inserted. The output axis of the locking cylinder and the axis of the positioning hole are perpendicular to the axis of the rotating shaft.

2. The flipping positioning mechanism as described in claim 1, characterized in that, The flipping positioning mechanism further includes a flipping support assembly, which includes a shaft support seat sleeved on the outside of the rotating shaft, and the shaft support seat is fixedly installed on the fixed frame; The shaft support is equipped with a rolling bearing, and the rotating shaft passes through the inner ring of the rolling bearing and is fixedly connected to the inner ring.

3. The flipping positioning mechanism as described in claim 2, characterized in that, The fixed fixture includes a tilting frame and a fixing component fixed to the tilting frame. The fixing component has at least one vacuum adsorption hole, which is connected to an external vacuum generator through an air passage.

4. The flipping positioning mechanism as described in claim 1, characterized in that, The fixed frame is provided with elastic components on both sides perpendicular to the axis of the rotating shaft to abut against the fixed fixture. When the elastic component is compressed, the output axis of the locking cylinder coincides with the axis of the positioning hole.

5. The flipping positioning mechanism as described in claim 4, characterized in that, The elastic component includes a fixed cavity, a compression spring, and an abutment. The fixed cavity is fixed to the fixed frame, the compression spring is disposed in the fixed cavity, one end of the abutment is disposed in the fixed cavity and connected to the compression spring, and the other end of the abutment is located outside the fixed cavity for abutting against the fixed fixture.

6. The flipping positioning mechanism as described in claim 1, characterized in that, The tilting cylinder is a rotary cylinder, and the output end of the rotary cylinder is fixedly connected to one end of the rotary shaft. The rotation axis of the tilting cylinder coincides with the axis of the rotary shaft.

7. The flipping positioning mechanism as described in claim 1, characterized in that, The locking cylinder is a pneumatic linear cylinder, and the extension and retraction direction of the piston rod of the linear cylinder is consistent with the axial direction of the positioning hole; the length of the pin is greater than the depth of the positioning hole.

8. The flipping positioning mechanism as described in claim 2, characterized in that, There are two shaft support seats, and the two ends of the rotating shaft are respectively inserted into the shaft support seats.

9. The flipping positioning mechanism as described in claim 1, characterized in that, The number of positioning holes and the number of pins are both two or more, and the positioning holes and the pins are fitted in a one-to-one correspondence.

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