Workpiece positioning structure for polishing after die casting of metal piece

Abstract

The utility model discloses a kind of workpiece positioning structures for polishing after die casting forming of metal piece, is related to the positioning technical field for polishing after die casting forming, including positioning mechanism main body, top plate and base, the positioning mechanism main body is evenly provided with lift hole and workpiece placing groove, workpiece placing groove is positioned and placed for polishing workpiece, the inner wall of the lift hole is provided with exhaust hole one on both sides, the cross section of the exhaust hole one is compatible with the shape of wedge block, the wedge block is installed in the two sides of top rod, and top rod is installed on top plate. The utility model is by being provided with top plate between positioning mechanism and base, and top plate is driven by cylinder, and the exhaust hole one, two and three in the workpiece placing groove of positioning mechanism are communicated in the process of being lifted by top plate, the channel of gas pump delivery gas is opened in the process of top plate lifting, and workpiece in placing groove can be blown up, and the action of being sent upwards to the gripper of mechanical arm, so that mechanical arm is better clamped.

Description

Technical Field

[0001] This utility model relates to the field of positioning technology for grinding after die casting, and specifically to a workpiece positioning structure for grinding after die casting of metal parts. Background Technology

[0002] After metal parts are die-cast, they need to undergo grinding and drilling. Grinding is often done using grinding belts or grinding wheels, which require the grippers of a robotic arm to hold the parts. Existing robotic arms require different gripping methods depending on the type of workpiece. The gripping range of the robotic arm's grippers is preset and fixed, which makes it difficult to accurately grip in batches, or the parts may fall off midway or fail to be gripped successfully. Therefore, the grippers of the robotic arm or the feeding plate and positioning plate for placing the workpieces need to be improved.

[0003] Existing positioning plates for placing workpieces to be ground are pre-molded and customized according to the specific model and shape of the workpiece. Their position for gripping by the robotic arm is fixed. For example, a grinding fixture disclosed in Chinese Patent Publication No. CN208977516U includes a base plate, a material rack, and a positioning assembly. The material rack is set on the base plate and has a cavity for placing the workpiece. The positioning assembly includes a positioning plate and a positioning post. The positioning plate is located on the periphery of the material rack and can abut against the workpiece. The positioning post is located on the base plate opposite the cavity; its position is adjustable and it can pass through the workpiece. The grinding fixture provided by this utility model uses a positioning plate to position the workpiece circumferentially and a positioning post to fix the workpiece, thus achieving workpiece positioning, improving grinding efficiency, and ensuring grinding quality. However, the fixture in this solution has fixed specifications and a fixed gripping position, which cannot effectively cooperate with the gripper of the robotic arm.

[0004] Therefore, it is necessary to invent a workpiece positioning structure for grinding after die casting of metal parts to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a workpiece positioning structure for grinding after metal parts are die-cast, so as to solve the problem of easy gripping failure during the gripping process of the robotic arm used for grinding.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A workpiece positioning structure for grinding metal parts after die casting includes a positioning mechanism body, a top plate, and a base. The positioning mechanism body has evenly spaced lifting holes and workpiece placement slots. The workpiece placement slots are used for positioning and placing the workpieces to be ground. Vent holes are provided on both sides of the inner wall of the lifting holes. The cross-section of the vent holes is adapted to the shape of the wedges. The wedges are installed on both sides of the push rods, which are installed on the top plate. The positions of multiple push rods correspond to the positions of multiple lifting holes. The positioning mechanism body is located in a grinding chamber, which also includes a robotic arm and a grinding belt. The bottom surface of the positioning mechanism body is provided with a top plate. The positioning mechanism body is laterally fixedly supported on the base, and the top plate is located inside the base.

[0008] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0009] 1. This utility model sets a top plate between the positioning mechanism and the base. The top plate is driven by a cylinder. During the process of the top plate being lifted, the exhaust holes one, two and three in the workpiece placement slot of the positioning mechanism are connected. During the process of the top plate being lifted, the channel for the air pump to deliver gas is opened, which can blow the workpiece in the placement slot up and send it upward towards the gripper of the robotic arm, so that the robotic arm can grip it better.

[0010] 2. This utility model uses an infrared sensor to detect whether multiple workpieces are placed in the workpiece placement slots. Then, it can start the air pump and cylinder to lift the top plate and deliver high-pressure gas to the connected gas channels, so that the workpieces are blown upward to a certain height. Combined with the gripping and clamping action of the robotic arm, the efficiency of gripping and grinding is improved. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is a three-dimensional structural diagram of the second exhaust port of this utility model;

[0013] Figure 3 This is a three-dimensional structural diagram of the top rod of this utility model;

[0014] Figure 4 This is an exploded three-dimensional view of the top plate of this utility model;

[0015] Figure 5 This is a three-dimensional structural diagram of the wedge block of this utility model.

[0016] Explanation of reference numerals in the attached drawings: 1. Main body of positioning mechanism; 101. Lifting hole; 102. Exhaust hole one; 103. Workpiece placement slot; 104. Exhaust hole two; 105. Infrared sensor; 2. Grinding chamber; 3. Top plate; 301. Top rod; 302. Wedge block; 303. Exhaust hole three; 304. Gas pipeline; 4. Base; 401. Air pump; 402. Cylinder. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0018] This utility model provides, for example Figures 1-5 The diagram illustrates a workpiece positioning structure for grinding metal parts after die casting. It includes a positioning mechanism body 1, a top plate 3, and a base 4. The positioning mechanism body 1 has evenly spaced lifting holes 101 and workpiece placement slots 103. The workpiece placement slots 103 are used for positioning and placing the workpiece for grinding. Vent holes 102 are provided on both sides of the inner wall of the lifting holes 101. The cross-section of the vent holes 102 is adapted to the shape of wedges 302. The wedges 302 are installed on both sides of a push rod 301, which is installed on the top plate 3. Multiple... The position of the top rod 301 corresponds to the position of multiple lifting holes 101. The main body 1 of the positioning mechanism is set in the grinding chamber 2. The grinding chamber 2 is also equipped with a robotic arm and a grinding belt. The bottom surface of the main body 1 of the positioning mechanism is provided with a top plate 3. The main body 1 of the positioning mechanism is laterally fixed and supported on the base 4. The top plate 3 is set in the base 4. The workpiece placement groove 103 is I-shaped, and multiple exhaust holes 104 are provided in the workpiece placement groove 103. An infrared sensor 105 is provided at the center of the workpiece placement groove 103.

[0019] Before being polished, the workpieces are evenly placed in multiple workpiece placement slots 103 of specific shapes, so that they can be picked up by the robotic arm at fixed points and polished in batches.

[0020] The area of ​​the top plate 3 is smaller than that of the main body 1 of the positioning mechanism. The top plate 3 is driven by the cylinder 402, which is located inside the base 4. The base 4 is also equipped with an air pump 401. The output end of the air pump 401 is connected to multiple gas pipes 304. The multiple gas pipes 304 are respectively connected to the bottom of multiple push rods 301. The push rods 301 are hollow inside.

[0021] Once the infrared sensor 105 detects that multiple workpieces have been placed in the workpiece placement slots 103, the cylinder 402 is activated to lift the top plate 3, thereby linking the entire gas channel and connecting the exhaust port 2 104, the push rod 301, the exhaust port 303, and the gas pipe 304.

[0022] The hollow channel inside the top rod 301 is connected to the exhaust holes 303 on the wedges 302 on both sides. The two wedges 302 are mirror symmetrical about the top rod 301, and the two exhaust holes 303 are on the same horizontal line. The two exhaust holes 303 can contact and connect with the exhaust hole 102, and the exhaust hole 102 is connected with multiple exhaust holes 204.

[0023] Once the entire gas channel is connected, the air pump 401 can deliver high-pressure gas to the entire gas channel, blowing multiple workpieces up above the surface of the positioning mechanism body 1. This allows for a lifting and feeding operation towards the gripper of the robotic arm, making it easier to grip.

[0024] Working principle of this utility model:

[0025] The workpiece to be polished is placed on the main body 1 of the positioning mechanism, i.e., placed according to the positions of multiple workpiece placement slots 103. The infrared sensor 105 can preferentially sense whether workpieces are placed in multiple workpiece placement slots 103. After sensing the workpiece, the cylinder 402 and the air pump 401 can be activated. The cylinder 402 pushes the top plate 3 upward, and the push rod 301 is pushed into the lifting hole 101. The exhaust hole 303 on the wedge 302 can be connected to the exhaust hole 102. When the workpiece needs to be clamped and polished, the air pump 401 will be driven to deliver high pressure to the gas pipe 304, blowing the workpiece placed in the workpiece placement slot 103 so that the upper surface of the workpiece is slightly higher than the surface of the main body 1 of the positioning mechanism, which is convenient for the robotic arm to clamp.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A workpiece positioning structure for grinding after die casting of a metal part, characterized in that: The system includes a positioning mechanism body (1), a top plate (3), and a base (4). The positioning mechanism body (1) has evenly spaced lifting holes (101) and workpiece placement slots (103). The workpiece placement slots (103) are used for positioning and placing grinding workpieces. The inner walls of the lifting holes (101) have exhaust holes (102) on both sides. The cross-section of the exhaust holes (102) is adapted to the shape of the wedge (302). The wedge (302) is mounted on the top rod (30). On both sides of 1), the top rod (301) is installed on the top plate (3). The positions of the multiple top rods (301) correspond to the positions of the multiple lifting holes (101). The main body (1) of the positioning mechanism is set in the grinding chamber (2). The grinding chamber (2) is also equipped with a robotic arm and a grinding belt. The bottom surface of the main body (1) of the positioning mechanism is provided with a top plate (3). The main body (1) of the positioning mechanism is laterally fixed and supported on the base (4). The top plate (3) is set in the base (4).

2. The workpiece positioning structure for grinding after die casting of a metal part according to claim 1, characterized in that: The workpiece placement slot (103) is I-shaped, and multiple exhaust holes (104) are provided inside the workpiece placement slot (103), and an infrared sensor (105) is provided at the center of the workpiece placement slot (103).

3. The workpiece positioning structure for grinding after die casting of a metal part according to claim 1, characterized in that: The area of ​​the top plate (3) is smaller than that of the main body (1) of the positioning mechanism, and the top plate (3) is driven by a cylinder (402).

4. The workpiece positioning structure for grinding after die casting of a metal part according to claim 3, characterized in that: The cylinder (402) is installed in the base (4), and the base (4) is also equipped with an air pump (401). The output end of the air pump (401) is connected to multiple gas pipes (304).

5. The workpiece positioning structure for grinding after die casting of a metal part according to claim 4, characterized in that: The plurality of gas pipes (304) are respectively connected to the bottom of the plurality of push rods (301), and the push rods (301) are hollow inside.

6. The workpiece positioning structure for grinding after die casting of a metal part according to claim 5, characterized in that: The hollow channel inside the top rod (301) is connected to the exhaust holes (303) opened on the wedges (302) on both sides.

7. The workpiece positioning structure for grinding after die casting of a metal part according to claim 6, characterized in that: The two wedges (302) are mirror-symmetrical about the top rod (301), and the two exhaust holes (303) are on the same horizontal line.

8. The workpiece positioning structure for grinding after die casting of a metal part according to claim 6, characterized in that: Two exhaust ports three (303) can contact and communicate with exhaust port one (102), and exhaust port one (102) is connected to multiple exhaust ports two (104).

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