Industrial robot joint casting sand core rotary flow coating clamp

Abstract

The utility model provides a kind of industrial robot joint casting sand core rotary flow coating fixture, comprising: fixed frame and sand core body, the fixed frame is equipped with mounting plate, the mounting plate is rotated by rotating mechanism on fixed frame, the mounting plate is equipped with the position of sand core body and is limited positioning mechanism, the mounting plate is equipped with the clamping mechanism for being used to fix sand core body, the top side of mounting plate is fixedly installed with guide rail, the surface of guide rail is slidably connected with movable plate. By cylinder one drives connecting shaft to move down, so that connecting shaft drives gas expansion shaft to move down and extend into gas expansion hole, then gas is input into gas expansion shaft, so that it is in contact with the inner wall of gas expansion hole, then the sand core body is extracted by cylinder one and moves up, and is limited positioning by cooperating positioning mechanism, so that the effect of preliminary fixing sand core body during positioning is realized, and the fixing effect and coating efficiency of sand core are effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment technology, specifically to a rotary coating fixture for sand cores of industrial robot joint castings. Background Technology

[0002] Sand cores are materials used to manufacture mold cores in casting production. They are generally made by mixing casting sand, molding sand binder, and additives in a certain proportion.

[0003] A known authorized patent with publication number CN222919590U discloses a rotary coating fixture for sand cores. Its background art addresses the problem that "existing sand core coating fixtures are generally fixed, which easily leads to uneven coating on the surface of the sand core, resulting in inconsistent thickness and thus substandard sand cores, causing losses and exhibiting certain limitations." To address this problem, the proposed solution includes: "a fixed frame, with a mounting plate rotatably connected to one side of the fixed frame via a rotating shaft; a rotary cylinder fixedly connected to one end of the fixed frame; a connecting block fixedly connected to one end of the rotary cylinder; one end of the connecting block fixedly connected to the rotating shaft; a front and rear clamping mechanism at the upper end of the mounting plate; a left and right clamping mechanism on one side of the mounting plate; the front and rear clamping mechanisms and the left and right clamping mechanisms clamp and fix the sand core body; and a positioning post fixedly connected to one side of the mounting plate."

[0004] However, in implementing the relevant technologies, the following problems were found in the existing technical solutions: When using the existing technology, the position of the sand core is only restricted during installation, which makes it inconvenient to initially fix the sand core during positioning. This can easily cause displacement during subsequent clamping, resulting in a reduction in the fixing effect and efficiency of the sand core. Utility Model Content

[0005] This utility model proposes a rotary coating fixture for sand cores of industrial robot joint castings, which solves the problem of inconvenience in the initial fixation of sand cores during positioning in related technologies.

[0006] The technical solution of this utility model is as follows: A rotary coating fixture for sand cores of industrial robot joint castings, comprising: a fixed frame and a sand core body, wherein a mounting plate is provided inside the fixed frame, the mounting plate is rotated by a rotating mechanism provided on the fixed frame, and a positioning mechanism is provided on the mounting plate to limit the position of the sand core body; The mounting plate is provided with a clamping mechanism for fixing the sand core body. A guide rail is fixedly installed on one side of the top of the mounting plate. A movable plate is slidably engaged on the surface of the guide rail. Several through holes are opened on the movable plate. Several screw holes are opened on the guide rail. A fixing bolt that is threadedly connected to the screw hole is provided inside the through hole. A cylinder is fixedly installed on the top of the movable plate. The output end of the cylinder moves through the movable plate and is connected to a connecting shaft. An air expansion shaft is connected to the bottom of the connecting shaft. An air expansion hole adapted to the air expansion shaft is opened on the sand core body.

[0007] Preferably, the positioning mechanism includes two positioning shafts symmetrically fixedly installed at the bottom center of the mounting plate, and a positioning block fixedly installed at the bottom center of the mounting plate and located between the two positioning shafts. The sand core body is provided with positioning holes corresponding to the positioning shafts.

[0008] Preferably, the rotating mechanism includes a rotating shaft fixedly installed on both sides of the mounting plate and rotating through the fixed frame, a rotating block fixedly connected to one end of the rotating shaft, a second cylinder rotatably connected to one side of the fixed frame, and a swing arm hinged to the output end of the second cylinder and slidably sleeved with the rotating block on one side.

[0009] Preferably, the clamping mechanism includes four sets of connecting blocks fixedly installed on the top of the mounting plate, a guide rod fixedly installed between the opposite faces of each set of connecting blocks, a sliding sleeve slidably sleeved on the surface of the guide rod, a clamping plate fixedly installed on the surface of each of two adjacent sliding sleeves, a through groove opened on the mounting plate and adapted to the clamping plate, a clamping block fixedly installed on the opposite faces of the two clamping plates, and two cylinders fixedly installed on the top of the mounting plate.

[0010] The output ends of the two cylinders are connected to the two clamping plates respectively, and the two sides of the sand core body are provided with clamping grooves that are adapted to the clamping blocks.

[0011] Preferably, a fixing ring is installed at each of the four top corners of the fixing frame, and guardrails are installed on multiple sides of the fixing frame.

[0012] The working principle and beneficial effects of this utility model are as follows: 1. The connecting shaft is moved downward by the cylinder, which in turn moves the air expansion shaft downward and inserts it into the air expansion hole. Then, air is supplied into the air expansion shaft, causing it to expand and come into contact with the inner wall of the air expansion hole. Subsequently, the sand core body is lifted and moved upward by the cylinder, and the positioning mechanism restricts its positioning. Therefore, the sand core body is initially fixed during positioning, avoiding the sand core body from shifting during the movement and affecting the clamping. This effectively improves the fixing effect and coating efficiency of the sand core.

[0013] Second, by loosening the fixing bolts and moving the movable plate along the guide rail to adjust the position, and then tightening the fixing bolts to fix it in place, it is easy to adjust the position of the air shaft according to the different types of sand core bodies, which helps to improve the applicability. Attached Figure Description

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model; Figure 2 This is a side view of the three-dimensional structure of the present invention; Figure 3 This is a partial three-dimensional structural diagram of the mounting plate of this utility model; Figure 4 This is a partial three-dimensional structural diagram of the movable plate of this utility model; Figure 5 This is a partial three-dimensional structural diagram of the sand core body of this utility model; In the diagram: 1. Fixing frame; 2. Sand core body; 3. Mounting plate; 4. Guide rail; 5. Movable plate; 6. Cylinder 1; 7. Air shaft; 8. Fixing bolt; 9. Positioning shaft; 10. Positioning block; 11. Rotating shaft; 12. Rotating block; 13. Cylinder 2; 14. Swing arm; 15. Connecting block; 16. Guide rod; 17. Sliding sleeve; 18. Clamping plate; 19. Clamping block; 20. Cylinder 3; 21. Fixing ring; 22. Guardrail; 23. Connecting shaft. Detailed Implementation

[0016] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0017] Please see Figure 1 - Figure 5 The present invention provides a rotary coating fixture for sand cores of industrial robot joint castings, comprising: a fixed frame 1 and a sand core body 2. The fixed frame 1 is provided with a mounting plate 3, which rotates by a rotating mechanism on the fixed frame 1. The mounting plate 3 is provided with a positioning mechanism that limits the position of the sand core body 2. The mounting plate 3 is provided with a clamping mechanism for fixing the sand core body 2. A guide rail 4 is fixedly installed on one side of the top of the mounting plate 3. A movable plate 5 is slidably engaged on the surface of the guide rail 4. Several through holes are opened on the movable plate 5. Several screw holes are opened on the guide rail 4. A fixing bolt 8 is provided inside the through hole and threadedly connected to the screw hole. A cylinder 6 is fixedly installed on the top of the movable plate 5. The output end of the cylinder 6 moves through the movable plate 5 and is connected to a connecting shaft 23. The bottom of the connecting shaft 23 is connected to an air expansion shaft 7. An air expansion hole that matches the air expansion shaft 7 is opened on the sand core body 2.

[0018] The technical solution provided in this embodiment is as follows: In use, the fixing frame 1 is moved onto the sand core body 2 to be coated, and the air expansion shaft 7 is aligned with the air expansion hole. Then, the connecting shaft 23 is driven downward by the cylinder 6, causing the connecting shaft 23 to drive the air expansion shaft 7 downward and extend into the air expansion hole. Next, air is supplied to the air expansion shaft 7 by personnel using an external air source device, causing it to expand and come into contact with the inner wall of the air expansion hole. Subsequently, the sand core body 2 is lifted upward by the cylinder 6, and its position is restricted and positioned by the positioning mechanism so that the position of the sand core body 2 is aligned with the clamping mechanism. Therefore, the sand core body 2 is initially fixed during positioning, avoiding the situation where the sand core body 2 shifts during movement and affects the clamping, effectively improving the fixing effect and coating efficiency of the sand core. Furthermore, by loosening the fixing bolt 8 and moving the movable plate 5 to slide along the guide rail 4 to adjust the position, the fixing bolt 8 is tightened to fix it after adjusting to the appropriate position. This facilitates the adjustment of the position of the air expansion shaft 7 according to different types of sand core bodies 2, which is beneficial to improving the applicability. Then, the core body 2 is clamped and fixed by the clamping mechanism, so that the fixing frame 1 carries the core body 2 into the paint tank for coating. Afterwards, it is taken out, and the core body 2 is tilted by the rotating mechanism to facilitate the flow of excess paint on the surface back into the paint tank, ensuring uniform coating. When disassembling the core body 2, the clamping mechanism is released and the air nozzle on the air shaft 7 is operated to release air, so that the air shaft 7 can be separated from the core body 2.

[0019] Furthermore, the positioning mechanism includes two positioning shafts 9 symmetrically fixedly installed at the bottom center of the mounting plate 3, and a positioning block 10 fixedly installed at the bottom center of the mounting plate 3 and located between the two positioning shafts 9. The sand core body 2 is provided with positioning holes corresponding to the positioning shafts 9.

[0020] Specifically, after the sand core body 2 is initially fixed, it is moved upward by the cylinder 6, and the positioning block 10 contacts the surface of the sand core body 2. At the same time, the positioning shaft 9 and the positioning hole are inserted to restrict and position the sand core body 2, so as to facilitate accurate clamping and fixing in the future.

[0021] Furthermore, the rotating mechanism includes a rotating shaft 11 fixedly mounted on both sides of the mounting plate 3 and rotating through the fixed frame 1, a rotating block 12 fixedly connected to one end of the rotating shaft 11, a cylinder 13 rotatably connected to one side of the fixed frame 1, and a swing arm 14 hinged to the output end of the cylinder 13 and slidably sleeved with the rotating block 12 on one side.

[0022] Specifically, after the sand core body 2 is removed from the paint pool, the cylinder 2 13 drives the swing arm 14 to rotate at a certain angle, and the swing arm 14 drives the rotating block 12 and the rotating shaft 11 to rotate, thereby causing the mounting plate 3 and the clamped sand core body 2 to rotate to an inclined state, so that the excess paint adhering to the surface of the sand core body 2 flows back into the paint pool. By swinging at different angles, excess paint can be reduced in individual positions to ensure uniform coating.

[0023] Furthermore, the clamping mechanism includes four sets of connecting blocks 15 fixedly installed on the top of the mounting plate 3, guide rods 16 fixedly installed between opposite faces of each set of connecting blocks 15, sliding sleeves 17 slidably sleeved on the surface of the guide rods 16, clamping plates 18 fixedly installed on the surfaces of each of two adjacent sliding sleeves 17, through slots opened on the mounting plate 3 and adapted to the clamping plates 18, clamping blocks 19 fixedly installed on opposite faces of the two clamping plates 18, and two cylinders 20 fixedly installed on the top of the mounting plate 3.

[0024] The output ends of the two cylinders 20 are connected to the two clamping plates 18 respectively, and the two sides of the sand core body 2 are provided with clamping grooves that are compatible with the clamping blocks 19.

[0025] Specifically, after the sand core body 2 is positioned, two cylinders 20 drive the two clamping plates 18 to move closer to each other, and the clamping plates 18 drive the sliding sleeve 17 to slide along the surface of the guide rod 16 to ensure the stability of the movement of the clamping plates 18, so that the clamping block 19 extends into the clamping groove on the sand core body 2, thereby achieving the function of clamping the sand core body 2.

[0026] Furthermore, fixing rings 21 are installed at the four corners of the top of the fixing frame 1, and guardrails 22 are installed on multiple sides of the fixing frame 1.

[0027] Specifically, by setting the fixing ring 21, it is easy to fix the fixing frame 1, so that the whole can be fixed or hoisted. By setting the guardrail 22, it is easy to protect the device.

[0028] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A rotary coating fixture for sand cores of industrial robot joint castings, comprising: The fixing frame (1) and the sand core body (2) are characterized in that the fixing frame (1) is provided with an installation plate (3), the installation plate (3) is rotated by a rotating mechanism provided on the fixing frame (1), and the installation plate (3) is provided with a positioning mechanism for limiting the position of the sand core body (2); The mounting plate (3) is provided with a clamping mechanism for fixing the sand core body (2). A guide rail (4) is fixedly installed on one side of the top of the mounting plate (3). A movable plate (5) is slidably engaged on the surface of the guide rail (4). Several through holes are opened on the movable plate (5). Several screw holes are opened on the guide rail (4). A fixing bolt (8) is provided inside the through hole and threadedly connected to the screw hole. A cylinder (6) is fixedly installed on the top of the movable plate (5). The output end of the cylinder (6) moves through the movable plate (5) and is connected to a connecting shaft (23). The bottom of the connecting shaft (23) is connected to an air expansion shaft (7). An air expansion hole adapted to the air expansion shaft (7) is opened on the sand core body (2).

2. The industrial robot joint casting sand core rotary coating fixture according to claim 1, characterized in that, The positioning mechanism includes two positioning shafts (9) symmetrically fixedly installed in the middle bottom of the mounting plate (3), and a positioning block (10) fixedly installed in the middle bottom of the mounting plate (3) and located in the middle of the two positioning shafts (9). The sand core body (2) is provided with positioning holes corresponding to the positioning shafts (9).

3. The industrial robot joint casting sand core rotary coating fixture according to claim 1, characterized in that, The rotating mechanism includes a rotating shaft (11) fixedly installed on both sides of the mounting plate (3) and rotating through the fixed frame (1), a rotating block (12) fixedly connected to one end of the rotating shaft (11), a cylinder two (13) rotatably connected to one side of the fixed frame (1), and a swing arm (14) hinged to the output end of the cylinder two (13) and slidably sleeved with the rotating block (12) on one side.

4. The industrial robot joint casting sand core rotary coating fixture according to claim 1, characterized in that, The clamping mechanism includes four sets of connecting blocks (15) fixedly installed on the top of the mounting plate (3), a guide rod (16) fixedly installed between the opposite faces of each set of connecting blocks (15), a sliding sleeve (17) slidably sleeved on the surface of the guide rod (16), a clamping plate (18) fixedly installed on the surface of each two adjacent sliding sleeves (17), a through groove opened on the mounting plate (3) and adapted to the clamping plate (18), a clamping block (19) fixedly installed on the opposite faces of the two clamping plates (18), and two cylinders (20) fixedly installed on the top of the mounting plate (3).

5. The industrial robot joint casting sand core rotary coating fixture according to claim 4, characterized in that, The output ends of the two cylinders (20) are connected to the two clamping plates (18) respectively. The two sides of the sand core body (2) are provided with clamping grooves that are compatible with the clamping blocks (19).

6. The industrial robot joint casting sand core rotary coating fixture according to claim 1, characterized in that, Fixing rings (21) are installed at the four corners of the top of the fixing frame (1), and guardrails (22) are installed on multiple sides of the fixing frame (1).

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