Positioning structure of metal workpiece hanger and overturning table
By setting an embedded groove and support structure on the flip bracket, and combining it with horizontal and vertical positioning mechanisms, the problem of inaccurate positioning after long-term use of the hanger is solved, achieving stable and precise positioning of the hanger and ensuring the fixation effect of the workpiece during the anodizing process.
Patent Information
- Application Number
- CN202422956644.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-12-02
AI Technical Summary
Existing metal workpiece hangers become inaccurate in positioning after prolonged use, leading to unstable workpiece fixation and even causing them to fall into the oxidation bath, thus affecting the anodizing effect.
The rotating bracket is equipped with an embedded groove and support structure, combined with horizontal and vertical positioning mechanisms. The hanger is positioned in the XY and Z directions by horizontal and vertical positioning cylinders, respectively, which reduces wear and deformation.
It improves the positioning accuracy and stability of the fixture, avoids positioning inaccuracies caused by wear, and ensures the stable fixation of the workpiece during the anodizing process.
Smart Images
Figure CN223496693U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of metal parts manufacturing, specifically to a positioning structure for a metal workpiece hanger and a turning table. Background Technology
[0002] The metal casings of digital 3C products often undergo anodizing during manufacturing. Before this process, individual semi-finished workpieces need to be temporarily hung on a special fixture. The fixture has special tooling clamps or metal clips to secure the workpiece. During anodizing, the workpiece, along with the fixture, is immersed in the oxidation bath.
[0003] When designing a workpiece rack, to improve its utilization rate and the number of workpieces that the anodizing bath can accommodate, tooling is usually installed on both sides of the rack to hold the workpieces. Therefore, the rack needs to be positioned and rotated during the process of placing the workpieces onto it.
[0004] After prolonged use, the positioning mechanism of existing fixtures suffers from wear on the positioning holes and bending of the flanges where the positioning holes are located, leading to inaccurate positioning of the fixture and preventing the workpiece from being effectively fixed to the tooling. In severe cases, the workpiece may fall into the anodizing bath during anodizing operations. Utility Model Content
[0005] To address the problem of inaccurate positioning of hangers on a turnover table after prolonged use in existing technologies, this utility model provides a positioning structure for a metal workpiece hanger and a turnover table. A turnover bracket is rotatably mounted on the table surface of the turnover table, and a turnover motor mounted on the turnover table is connected to the rotating shaft of the turnover bracket to drive the turnover bracket to rotate.
[0006] The flip bracket includes an insert groove for mounting the hanger, and the bottom edge of the insert groove has a support structure for supporting the hanger; the flip bracket is provided with a horizontal positioning mechanism and a vertical positioning mechanism.
[0007] The fixture includes a frame, with several tooling fixtures installed on the upper and lower sides of the frame for clamping the workpiece; the front and rear ends of the frame are fixed to a bearing plate that cooperates with the support structure, and the vertical positioning mechanism presses the bearing plate onto the support structure.
[0008] A set of horizontal positioning mechanisms is provided at the front and rear ends of the flip bracket. The horizontal positioning mechanism includes a conical positioning block. The front and rear ends of the frame have V-shaped slots that cooperate with the positioning blocks. The positioning blocks can be inserted into the V-shaped slots. The positioning blocks at the front end of the flip bracket and / or the positioning blocks at the rear end of the frame are driven by the horizontal positioning cylinder to insert into the bottom of the corresponding V-shaped slots in a direction parallel to the rotating axis of the flip bracket and press against it.
[0009] In some embodiments, the bearing plates are divided into two groups and fixed to the front and rear ends of the frame respectively. Each group of bearing plates includes two parallel upper and lower bearing plates, which are symmetrically arranged on the upper and lower sides of the rotating shaft of the flipping bracket.
[0010] In some embodiments, the vertical positioning mechanism is respectively disposed at the front and rear ends of the flipping bracket. The vertical positioning mechanism includes a vertical positioning cylinder fixed on the flipping bracket. The actuating end of the vertical positioning cylinder is connected to the inclined surface of the wedge-shaped push block and the bearing surface of the support structure to form a triangular space. The inclined surface of the push block presses against the bearing plate and presses the bearing plate onto the bearing surface of the support structure.
[0011] In some embodiments, the frame is I-shaped, including two front and rear crossbars and longitudinal beams connected to the crossbars at both ends, and the tooling fixture is fixed on the longitudinal beams; the bearing plate is horizontally arranged and welded to the crossbars.
[0012] In some embodiments, the positioning block at the front of the flipping bracket is connected to a horizontal positioning cylinder and is driven by the horizontal positioning cylinder to move back and forth; the positioning block at the rear of the flipping bracket is fixedly installed on the frame.
[0013] In some embodiments, the positioning blocks at the rear of the flip bracket include two blocks, left and right, which are symmetrically arranged on both sides of the rotating shaft of the flip bracket.
[0014] In some embodiments, the support structure is a support block fixedly disposed at the four corners of the embedded groove.
[0015] In existing technology, several conical positioning cones are typically fixed on a flipping bracket, with the tips of the positioning cones facing upwards, i.e., along the Z-axis. A positioning plate with positioning holes is installed on the hanger along the horizontal direction (XY direction). The hanger is placed on the flipping bracket by a robot arm, and the positioning holes align with the positioning cones for accurate positioning. Then, other force-applying components press the hanger downwards along the Z-axis.
[0016] This positioning method is simple and efficient, but after prolonged use, the downward pressure along the Z-axis on the hanger causes wear on the positioning holes and deformation of the positioning plate, leading to inaccurate positioning. This affects the subsequent installation and fixing of workpieces and tooling fixtures, resulting in some workpieces not being installed properly.
[0017] The positioning structure of a metal workpiece hanger and a turnover table, which applies the above-mentioned technical solution of this utility model, has the following effects:
[0018] This utility model modifies the positioning method of the hanger, and the positioning work is divided into horizontal positioning (XY direction) and vertical positioning (Z direction).
[0019] First, let's introduce vertical positioning. Specifically, an embedding groove is set on the flip bracket. The bottom of the embedding groove is open, which is used to place the workpiece on the back of the hanger. A support structure is set at the bottom edge of the embedding groove to support the hanger. The support plate of the hanger is pressed on the support structure, and then the vertical positioning mechanism is used to press the support plate tightly, thus completing the vertical positioning and fixation of the hanger.
[0020] For the planar direction (XY direction), specifically, V-shaped slots are opened at both ends of the frame of the hanger, and conical positioning blocks are set at both ends of the flipping bracket. The horizontal positioning cylinder pushes the positioning blocks into the bottom of the V-shaped slots.
[0021] The above technical solutions reduce the deformation of the hanger due to vertical clamping forces. Furthermore, even if deformation occurs after prolonged use, it will not affect the horizontal positioning accuracy. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the tilting table of this utility model in its positioned state;
[0023] Figure 2 This is a schematic diagram of the flip bracket and hanging bracket in the locked state of this utility model;
[0024] Figure 3 This is a 3D schematic diagram of the wall mount;
[0025] Figure 4 This is a schematic diagram of the front end of the mounting bracket;
[0026] Figure 5 This is a schematic diagram of the rear end of the mounting bracket;
[0027] Figure 6 This is a schematic diagram showing the locked state of the front end of the hanging bracket and the flip bracket;
[0028] Figure 7 This is a top view of the front end of the hanger and the flip bracket in the locked state;
[0029] Figure 8 This is a top view of the rear end of the hanger and the locked flip bracket;
[0030] Figure 9 This is a schematic diagram of the vertical positioning mechanism, specifically a diagram showing the jacking block locking the bearing plate.
[0031] Explanation of reference numerals in the attached figures
[0032] 1-Tilting table;
[0033] 2-Flip-over bracket, 2a-Support structure;
[0034] 3- Flip motor;
[0035] 4-Horizontal positioning mechanism, 4a-Positioning block, 4b-Horizontal positioning cylinder;
[0036] 5-Vertical positioning mechanism, 5a-Push block, 5b-Vertical positioning cylinder;
[0037] 6-Hanger, 6a-Frame, 6b-Tooling fixture, 6c-Bearing plate, 6d-V-shaped slot. Detailed Implementation
[0038] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0039] This utility model provides a metal workpiece hanger and a positioning structure for a flipping table 1. A flipping bracket 2 is rotatably mounted on the table surface of the flipping table 1. A flipping motor 3 mounted on the flipping table 1 is connected to the rotating shaft of the flipping bracket 2, driving the flipping bracket 2 to rotate.
[0040] The flip bracket 2 includes an insert groove for mounting the hanger. The bottom edge of the insert groove has a support structure 2a for supporting the hanger. The flip bracket 2 is equipped with a horizontal positioning mechanism 4 and a vertical positioning mechanism 5.
[0041] The fixture includes a frame 6a. Several tooling fixtures 6b are mounted on the upper and lower surfaces of the frame 6a for clamping workpieces. The front and rear ends of the frame 6a are fixed to a bearing plate 6c that mates with the support structure 2a. The vertical positioning mechanism 5 presses the bearing plate 6c onto the support structure 2a.
[0042] A set of horizontal positioning mechanisms 4 is provided at both the front and rear ends of the flip bracket 2. Each horizontal positioning mechanism 4 includes a conical positioning block 4a. The front and rear ends of the frame 6a have V-shaped slots 6d that mate with the positioning blocks 4a. The positioning blocks 4a can be inserted into the V-shaped slots 6d. The positioning blocks 4a at the front end of the flip bracket 2 and / or the positioning blocks 4a at the rear end of the frame 6a are driven by a horizontal positioning cylinder 4b to insert into the bottom of the corresponding V-shaped slots 6d in a direction parallel to the rotation axis of the flip bracket 2 and then press firmly against it.
[0043] The tilting table 1 also includes drive cylinders and a robotic arm for operating the tooling fixture 6b, thereby mounting the workpiece onto the tooling fixture 6b. This application does not modify the tilting table 1 itself, so it can be implemented according to the prior art.
[0044] like Figure 1As shown, the core component of the flip table 1 is the flip support 2. The flip support 2 is a metal frame 6a with an open center, forming an embedded slot for mounting the hanger 6. The flip support 2 includes a rotating shaft horizontally positioned in the center. The rotating shaft is rotatably mounted on the table surface of the flip table 1. The flip table 1 is also equipped with a flip motor 3, the output shaft of which is connected to the rotating shaft, driving the flip support 2 to rotate. Here, the flip motor 3 is a servo motor, rotating 180° each time, and then rotating 180° in the opposite direction.
[0045] like Figure 2 and Figure 3 As shown, the hanger 6 is primarily a metal frame 6a. The front end of the frame 6a has a hook. Both sides of the frame 6a are used to hold metal workpieces, therefore dedicated tooling fixtures 6b are provided on both sides. The specific form of the tooling fixture 6b is adjusted according to the specifications of the workpiece to be oxidized. Support plates 6c for positioning are provided at both the front and rear ends of the frame 6a. The support structure 2a serves to support the hanger and also to position it vertically. The vertical positioning mechanism 5 presses the support plate 6c against the support structure 2a, determining the vertical position of the hanger. A V-shaped groove 6d for positioning is provided on the support plate 6c. The horizontal positioning mechanism 4 has positioning blocks 4a that cooperate with and align with the V-shaped groove 6d. After the positioning blocks 4a at both the front and rear ends are inserted into their corresponding V-shaped grooves 6d, the horizontal position and orientation of the hanger are positioned and fixed.
[0046] The frame 6a is a welded and fixed metal frame. The bearing plates 6c are divided into two groups, front and rear, and fixed to the front and rear ends of the frame 6a respectively. This allows the frame 6a to be positioned and fixed from both ends, maintaining the stability of the entire fixture. Because the frame 6a includes both front and back sides, and workpieces will be placed on both sides, in order to allow for interchangeability between the two sides, each set of bearing plates 6c includes two parallel upper and lower bearing plates 6c, symmetrically arranged on the upper and lower sides of the rotating shaft of the flipping bracket 2.
[0047] like Figures 4-9 As shown, the vertical positioning mechanism 5 is respectively disposed at the front and rear ends of the flipping bracket 2. The vertical positioning mechanism 5 includes a vertical positioning cylinder 5b fixed on the flipping bracket 2. The actuating end of the vertical positioning cylinder 5b is connected to the inclined surface of the wedge-shaped push block 5a, forming a triangular space with the bearing surface of the support structure 2a. The inclined surface of the push block 5a presses against the bearing plate 6c, pressing the bearing plate 6c onto the bearing surface of the support structure 2a. Preferably, the push block 5a is located directly above the bearing structure.
[0048] The frame 6a is I-shaped, including two front and rear crossbars and longitudinal beams connected to the crossbars at both ends. The tooling fixture 6b is fixed to the longitudinal beams. The bearing plate 6c is horizontally positioned and welded to the crossbars. The bearing plate 6c is horizontally positioned and may have several reinforcing ribs.
[0049] The positioning block 4a at the front of the flip bracket 2 is connected to the horizontal positioning cylinder 4b and can move back and forth driven by the horizontal positioning cylinder 4b. The positioning block 4a at the rear of the flip bracket 2 is fixedly installed on the frame 6a.
[0050] The rear positioning block 4a of the flip bracket 2 includes two blocks, one on the left and one on the right. The two positioning blocks 4a are symmetrically arranged on both sides of the rotating shaft of the flip bracket 2. Furthermore, the positioning block 4a at the front end of the flip bracket 2 is directly opposite the positioning block 4a at the bottom of the flip bracket 2.
[0051] The support structure 2a consists of support blocks fixedly installed at the four corners of the embedded groove. The support blocks are welded and fixed to the flip bracket 2.
[0052] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A positioning structure for a metal workpiece hanger and a flipping table, wherein a flipping bracket (2) is rotatably mounted on the table surface of the flipping table (1), and a flipping motor (3) mounted on the flipping table (1) is connected to the rotating shaft of the flipping bracket (2) to drive the flipping bracket (2) to rotate; characterized in that, The flip bracket (2) includes an insert groove for setting the hanger, and the bottom edge of the insert groove has a support structure (2a) for supporting the hanger; the flip bracket (2) is provided with a horizontal positioning mechanism (4) and a vertical positioning mechanism (5); The fixture includes a frame (6a), on which several tooling fixtures (6b) are installed for clamping workpieces; the front and rear ends of the frame (6a) are fixed to a bearing plate (6c) that cooperates with the support structure (2a), and the vertical positioning mechanism (5) presses the bearing plate (6c) onto the support structure (2a). A set of horizontal positioning mechanisms (4) are respectively provided at the front and rear ends of the flip bracket (2). The horizontal positioning mechanism (4) includes a conical positioning block (4a). The front and rear ends of the frame (6a) are equipped with V-shaped slots (6d) that cooperate with the positioning block (4a). The positioning block (4a) can be inserted into the V-shaped slot (6d). The positioning block (4a) at the front end of the flip bracket (2) and / or the positioning block (4a) at the rear end of the frame (6a) are driven by the horizontal positioning cylinder (4b) to insert into the bottom of the corresponding V-shaped slot (6d) in a direction parallel to the rotation axis of the flip bracket (2) and press against it.
2. The positioning structure of the metal workpiece hanger and tilting table according to claim 1, characterized in that, The bearing plates (6c) are divided into two groups and fixed at the front and rear ends of the frame (6a). Each group of bearing plates (6c) includes two parallel upper and lower bearing plates (6c), which are symmetrically arranged on the upper and lower sides of the rotating shaft of the flipping bracket (2).
3. The positioning structure of the metal workpiece hanger and tilting table according to claim 2, characterized in that, The vertical positioning mechanism (5) is respectively set at the front and rear ends of the flipping bracket (2). The vertical positioning mechanism (5) includes a vertical positioning cylinder (5b) fixed on the flipping bracket (2). The execution end of the vertical positioning cylinder (5b) is connected to the inclined surface of the wedge-shaped push block (5a) and the bearing surface of the support structure (2a) to form a triangular space. The inclined surface of the push block (5a) presses against the bearing plate (6c) and presses the bearing plate (6c) onto the bearing surface of the support structure (2a).
4. The positioning structure of the metal workpiece hanger and tilting table according to claim 2, characterized in that, The frame (6a) is I-shaped and includes two front and rear crossbars and longitudinal beams that are connected to the crossbars at both ends. The tooling fixture (6b) is fixed on the longitudinal beams. The bearing plate (6c) is horizontally arranged and welded to the crossbars.
5. The positioning structure of the metal workpiece hanger and tilting table according to claim 1, characterized in that, The positioning block (4a) at the front of the flip bracket (2) is connected to the horizontal positioning cylinder (4b) and can move back and forth when driven by the horizontal positioning cylinder (4b); the positioning block (4a) at the rear of the flip bracket (2) is fixedly installed on the frame (6a).
6. The positioning structure of the metal workpiece hanger and tilting table according to claim 5, characterized in that, The positioning blocks (4a) at the rear of the flip bracket (2) include two, left and right, and the two positioning blocks (4a) are symmetrically arranged on both sides of the rotating shaft of the flip bracket (2).
7. The positioning structure of the metal workpiece hanger and tilting table according to claim 1, characterized in that, The support structure (2a) is a support block fixedly installed at the four corners of the embedded groove.