A machine for finishing the sprue of a metal sleeve casting

Abstract

This invention relates to the field of casting manufacturing technology, specifically to a metal sleeve casting gate trimming machine tool. The machine tool has an L-shaped structure, with a connecting frame on one side. A rotary motor is fixedly installed inside the machine tool, its output end passing through the machine tool and fixedly connected to one end of the connecting frame. The connecting frame has a U-shaped structure, with two symmetrically arranged limiting grooves on its inner sidewall. A mounting frame is inserted into the connecting frame, and limiting strips are fixedly installed on both sides of the mounting frame, interlocking with the corresponding limiting grooves. This invention, through the L-shaped structure design of the machine tool, internally and fixedly installs the rotary motor, and the connecting frame is directly driven by the rotary motor, achieving precise rotation and positioning of the mounting frame. Combined with a hydraulic cylinder driving the cutting frame to smoothly rise and fall within the lifting groove, the cutting tool on the cutting frame can approach the casting gate at a constant feed speed, avoiding cutting deviation or impact caused by uneven force during manual operation.

Description

Technical Field

[0001] This invention relates to the field of casting manufacturing technology, and in particular to a machine tool for trimming the gate of metal sleeve castings. Background Technology

[0002] In the casting manufacturing industry, after the metal sleeve casting is cast, there is usually excess metal residue at the gate. This residue not only affects the appearance and dimensional accuracy of the casting, but also directly affects the smooth progress of subsequent assembly or machining processes. Therefore, the gate must be trimmed before the casting leaves the factory.

[0003] Traditional gate trimming methods often involve manual grinding and removal using handheld angle grinders or cutting machines. This approach has several drawbacks: First, manual operation makes it difficult to guarantee the flatness and perpendicularity of the cut surface, and the trimming quality is highly dependent on the operator's skill level, resulting in poor quality stability. Second, the reaction force generated during handheld cutting can easily cause casting displacement, especially for circular cross-section metal sleeves, where clamping and fixing are difficult, and the pipe can easily roll or deflect during cutting, affecting cutting accuracy and even causing safety accidents. Third, cutting and grinding are usually two independent processes, requiring separate machines, leading to long process flow times and low production efficiency. Fourth, existing simple clamps are mostly rigid clamping structures, with poor adaptability to different pipe diameters, and excessive clamping force can easily damage the casting surface.

[0004] To address the aforementioned issues, the industry urgently needs an integrated finishing device that can stably clamp and precisely cut metal sleeve castings while also providing grinding capabilities, in order to improve the efficiency and quality of gate finishing. Summary of the Invention

[0005] The purpose of this invention is to solve the problems in the background art by proposing a metal sleeve casting gate trimming machine.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a metal sleeve casting gate trimming machine tool, comprising a machine tool having an L-shaped structure, a connecting frame provided on one side of the machine tool, a rotary motor fixedly installed inside the machine tool, the output end of the rotary motor passing through the machine tool and fixedly connected to one end of the connecting frame, the connecting frame having a U-shaped structure, two symmetrically arranged limiting grooves provided on the inner side wall of the connecting frame, an installation frame inserted inside the connecting frame, and limiting strips fixedly installed on both sides of the installation frame, the limiting strips being inserted into the corresponding limiting grooves; The machine tool has a lifting slot at the top and below the connecting frame. A cutting frame is inserted in the lifting slot. A hydraulic cylinder is fixedly installed in the lifting slot and below the cutting frame. The output end of the hydraulic cylinder is fixedly connected to the bottom of the cutting frame.

[0007] In the aforementioned metal sleeve casting gate dressing machine, the top of the mounting frame is provided with a mounting groove, and several mounting columns are fixedly installed in the mounting groove. Two symmetrically arranged extrusion rods are inserted into the outer wall of the mounting column. One end of the extrusion rod inserted into the mounting column has an inclined surface. The top of the mounting column is threaded with an extrusion bolt. An extrusion cone is rotatably installed at one end of the extrusion bolt inserted into the mounting column. The extrusion cone contacts the inclined surface on the extrusion rod. An arc-shaped extrusion plate is fixedly installed at the end of the extrusion rod away from the mounting column.

[0008] In the aforementioned metal sleeve casting gate trimming machine tool, an arc-shaped movable plate is provided on the side of the extrusion plate away from the extrusion rod. A rubber layer is fixedly installed on the side of the movable plate away from the extrusion plate. A spring groove is provided on the side of the extrusion plate near the movable plate. A pressure block is fixedly installed on the side of the movable plate near the extrusion plate. The pressure block is inserted into the spring groove. Several return springs are fixedly installed between the pressure block and the inner wall of the spring groove.

[0009] In the aforementioned metal sleeve casting gate dressing machine, a number of spring push rods symmetrically arranged in pairs are inserted into the bottom of the mounting frame. One end of each spring push rod passes through the mounting frame and extends into the mounting groove. Both ends of the spring push rod are hemispherical. The bottom of the connecting frame and both sides of the mounting frame are provided with second sliding grooves. A concave push frame is provided below the connecting frame. The bottom of the push frame is slidably connected to the two second sliding grooves. The side of the push frame near the mounting frame is provided with symmetrically arranged inclined surfaces.

[0010] In the aforementioned metal sleeve casting gate dressing machine tool, the top of the cutting frame is provided with a receiving groove, and a first sliding groove is provided on both sides of the top of the cutting frame and on both sides of the receiving groove. A concave support frame is provided above the cutting frame, and the bottom of the support frame is slidably connected to the two first sliding grooves respectively. Two symmetrically arranged cutting motors are fixedly installed inside the support frame, and cutting steel ropes are sleeved on the output ends of the two cutting motors through drive wheels.

[0011] In the aforementioned metal sleeve casting gate dressing machine tool, the cutting motor is a biaxial motor, and a grinding belt is sleeved between the ends of the two cutting motors that are away from the cutting steel rope via a rotating wheel.

[0012] In the aforementioned metal sleeve casting gate dressing machine tool, positioning bolts are threaded onto the outer walls of both sides of the connecting frame, and positioning screw holes are provided on the outer walls of the limiting strips on both sides of the mounting frame, with the opening positions of the positioning screw holes corresponding to the installation positions of the positioning bolts.

[0013] In the aforementioned metal sleeve casting gate trimming machine tool, inclined surfaces are provided on the outer wall of the machine tool and on both sides of the cutting frame.

[0014] Compared with existing technologies, the advantages of this invention are as follows: Through the L-shaped structure design of the machine tool, the rotary motor is built-in and fixedly installed, and the connecting frame is directly driven by the rotary motor, achieving precise flipping and positioning of the mounting frame. Combined with the hydraulic cylinder driving the cutting frame to smoothly rise and fall within the lifting groove, the cutting tool on the cutting frame can approach the casting gate at a constant feed speed, avoiding cutting deviation or impact caused by uneven force during manual operation. This significantly improves the flatness and perpendicularity of the cut surface, while reducing the safety risks to operators. The mounting slot of the mounting bracket is equipped with several mounting posts. Each mounting post has a pressing bolt that pushes a pressing cone, causing two symmetrically arranged pressing rods to push outwards simultaneously. This drives the arc-shaped pressing plate and the movable plate to clamp the metal sleeve from the inner or outer wall. The movable plate has a rubber layer, which, together with the pressure block and the return spring in the spring groove, achieves elastic floating clamping. This ensures the clamping is firm and prevents the pipe from rotating or shifting during cutting. The buffering effect of the rubber layer and the spring also avoids damage to the casting surface caused by rigid clamping. It is suitable for finishing castings after precision machining. The cutting motor is a biaxial motor. One end of its output drives the cutting steel rope to rotate at high speed through a drive wheel to cut the gate, while the other end drives the grinding belt to rotate synchronously through a rotating wheel. During the upward movement of the cutting frame, the cutting steel rope first contacts the casting gate to complete the cut, and then the grinding belt grinds and removes burrs from the cut surface. The cutting and grinding processes are integrated into the same machine tool and completed continuously, reducing the time for workpiece transfer and reclamping, and greatly improving production efficiency. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the support frame in this invention; Figure 3 This is a three-dimensional structural diagram of the lifting groove in this invention; Figure 4 This is a partial cross-sectional view of the machine tool in this invention; Figure 5 This is a three-dimensional schematic diagram of the bottom structure of the connecting frame and the mounting frame in this invention; Figure 6 This is a partial three-dimensional structural diagram of the mounting bracket in this invention; Figure 7 This is a cross-sectional view of the support frame in this invention; Figure 8 This is a cross-sectional structural schematic diagram of the connecting frame and mounting frame of the present invention; Figure 9 This is the present invention. Figure 8 A magnified schematic diagram of the structure at point A in the middle.

[0016] In the diagram: 1. Machine tool; 101. Rotary motor; 102. Lifting groove; 103. Hydraulic cylinder; 2. Connecting frame; 201. Limiting groove; 202. Second slide groove; 203. Push frame; 204. Positioning bolt; 3. Mounting frame; 301. Limiting strip; 302. Mounting groove; 303. Mounting column; 304. Extrusion rod; 305. Extrusion bolt; 306. Extrusion cone; 307. Extrusion plate; 308. Movable plate; 309. Spring groove; 310. Pressure block; 311. Spring push rod; 312. Limiting screw hole; 4. Cutting frame; 401. Receiving groove; 402. First slide groove; 403. Support frame; 404. Cutting motor; 405. Cutting steel rope; 406. Grinding sanding belt. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0018] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0019] Reference Figures 1-9 A metal sleeve casting gate trimming machine tool includes a machine tool 1, which has an L-shaped structure. A connecting frame 2 is provided on one side of the machine tool 1. A rotary motor 101 is fixedly installed inside the machine tool 1. The output end of the rotary motor 101 passes through the machine tool 1 and is fixedly connected to one end of the connecting frame 2. The connecting frame 2 has a U-shaped structure. Two symmetrically arranged limiting grooves 201 are opened on the inner side wall of the connecting frame 2. An installation frame 3 is inserted into the connecting frame 2. Limiting strips 301 are fixedly installed on both sides of the installation frame 3. The limiting strips 301 are inserted into the corresponding limiting grooves 201.

[0020] A lifting groove 102 is provided on the top of the machine tool 1 and below the connecting frame 2. A cutting frame 4 is inserted in the lifting groove 102. A hydraulic cylinder 103 is fixedly installed in the lifting groove 102 and below the cutting frame 4. The output end of the hydraulic cylinder 103 is fixedly connected to the bottom of the cutting frame 4.

[0021] The top of the mounting bracket 3 is provided with a mounting groove 302, and a number of mounting posts 303 are fixedly installed in the mounting groove 302. Two symmetrically arranged extrusion rods 304 are inserted into the outer wall of the mounting post 303. One end of the extrusion rod 304 inserted into the mounting post 303 has an inclined surface. The top of the mounting post 303 is threadedly connected with an extrusion bolt 305. One end of the extrusion bolt 305 inserted into the mounting post 303 is rotatably installed with an extrusion cone 306. The extrusion cone 306 contacts the inclined surface on the extrusion rod 304. An arc-shaped extrusion plate 307 is fixedly installed at the end of the extrusion rod 304 away from the mounting post 303.

[0022] An arc-shaped movable plate 308 is provided on the side of the extrusion plate 307 away from the extrusion rod 304. A rubber layer is fixedly installed on the side of the movable plate 308 away from the extrusion plate 307. A spring groove 309 is provided on the side of the extrusion plate 307 near the movable plate 308. A pressure block 310 is fixedly installed on the side of the movable plate 308 near the extrusion plate 307. The pressure block 310 is inserted into the spring groove 309. Several return springs are fixedly installed between the pressure block 310 and the inner wall of the spring groove 309.

[0023] The bottom of the mounting bracket 3 is provided with several spring push rods 311 arranged symmetrically in pairs. One end of the spring push rod 311 passes through the mounting bracket 3 and extends into the mounting groove 302. Both ends of the spring push rod 311 are hemispherical. The bottom of the connecting bracket 2 and both sides of the mounting bracket 3 are provided with second sliding grooves 202. The bottom of the connecting bracket 2 is provided with a concave push frame 203. The bottom of the push frame 203 is slidably connected to the two second sliding grooves 202. The side of the push frame 203 near the mounting bracket 3 is provided with symmetrically arranged inclined surfaces. The push frame 203 moves back and forth in the second sliding groove 202 by electric drive.

[0024] The top of the cutting frame 4 is provided with a receiving groove 401. A first sliding groove 402 is provided on the top of the cutting frame 4 and on both sides of the receiving groove 401. A concave support frame 403 is provided above the cutting frame 4. The bottom of the support frame 403 is slidably connected to the two first sliding grooves 402 respectively. Two symmetrically arranged cutting motors 404 are fixedly installed in the support frame 403. The output ends of the two cutting motors 404 are fitted with cutting steel ropes 405 through drive wheels. The support frame 403 is electrically driven to move back and forth in the first sliding groove 402.

[0025] The cutting motor 404 is a biaxial motor, and a grinding belt 406 is provided between the ends of the two cutting motors 404 that are away from the cutting steel rope 405 through a rotating wheel.

[0026] The upper part of both sides of the connecting frame 2 is threaded with positioning bolts 204. The outer wall of the limiting strip 301 on both sides of the mounting frame 3 is provided with limiting screw holes 312. The opening position of the limiting screw holes 312 corresponds to the installation position of the positioning bolts 204.

[0027] Inclined surfaces are provided on the outer wall of the machine tool 1 and on both sides of the cutting frame 4.

[0028] The working principle and usage of this invention are explained in detail below: In use, first place the metal sleeve casting in the mounting groove 302 with its gate facing upwards, and then rotate the extrusion bolts 305 on the top of each mounting column 303 in sequence. The extrusion bolts 305 push the extrusion cone 306 downwards. The extrusion cone 306 extrudes the inclined surfaces at the ends of the two extrusion rods 304 through the conical surface, causing the two extrusion rods 304 to extend outwards synchronously, driving the extrusion plate 307 and the movable plate 308 to press against the inner or outer wall of the metal sleeve from the inside or outside until the rubber layer on the movable plate 308 is tightly attached to the surface of the pipe, thus completing the clamping.

[0029] Align the upper limit bar 301 of the mounting bracket 3, which has several metal pipe sleeve castings installed, with the limit groove 201 and insert it into the connecting bracket 2 until the mounting bracket 3 is in place. Then tighten the positioning bolts 204 on both sides of the connecting bracket 2 so that the ends of the positioning bolts 204 are inserted into the limit screw holes 312 on the limit bar 301, thus completing the fixing of the mounting bracket 3.

[0030] Start the rotating motor 101, drive the connecting frame 2 and the mounting frame 3 to rotate, and drive several fixed metal sleeve castings to rotate synchronously, so that the gate is facing the cutting frame 4 below. Start the cutting motor 404, drive the cutting steel rope 405 to rotate at high speed, and then control the output end of the hydraulic cylinder 103 to push the cutting frame 4 to rise to the designated position. After the cutting frame 4 rises to the designated position, operate the support frame 403 to move along the first slide 402, driving the high-speed rotating cutting steel rope 405 to move. During the movement of the cutting steel rope 405, it will connect with and align with the gate on the metal sleeve casting for cutting.

[0031] After the cutting steel rope 405 cuts the gate of the metal sleeve casting, the support frame 403 continues to move, which will drive the subsequent grinding belt 406 to move below and align with the cut metal sleeve casting. At the same time as the support frame 403 moves, the push frame 203 moves synchronously through the central control program. When the grinding belt 406 moves to the position aligned with the cut metal sleeve casting, the push frame 203 moves synchronously to the position aligned with the cut metal sleeve casting. At this time, the push frame 203 will exert a squeezing effect on the spring push rod 311 at the corresponding position of the aligned metal sleeve casting. The squeezed spring push rod 311 will extend into the mounting groove 302 and exert a squeezing effect on the corresponding metal sleeve casting. The squeezed metal sleeve casting will drive the movable plate 308 to extend in the direction of the grinding belt 406. At this time, the metal sleeve casting will come into contact with the grinding belt 406. The high-speed rotating grinding belt 406 can further grind the cut gate position.

[0032] To further clarify, the aforementioned fixed connection should be interpreted broadly unless otherwise explicitly specified and limited. For example, it may be welding, gluing, or integral molding, or other conventional methods well known to those skilled in the art.

[0033] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A metal sleeve casting gate trimming machine tool, comprising a machine tool (1), characterized in that: The machine tool (1) has an L-shaped structure. A connecting frame (2) is provided on one side of the machine tool (1). A rotary motor (101) is fixedly installed inside the machine tool (1). The output end of the rotary motor (101) passes through the machine tool (1) and is fixedly connected to one end of the connecting frame (2). The connecting frame (2) has a U-shaped structure. Two symmetrically arranged limiting grooves (201) are opened on the inner side wall of the connecting frame (2). An installation frame (3) is inserted inside the connecting frame (2). Limiting strips (301) are fixedly installed on both sides of the installation frame (3). The limiting strips (301) are inserted into the corresponding limiting grooves (201). A lifting groove (102) is provided on the top of the machine tool (1) and below the connecting frame (2). A cutting frame (4) is inserted in the lifting groove (102). A hydraulic cylinder (103) is fixedly installed in the lifting groove (102) and below the cutting frame (4). The output end of the hydraulic cylinder (103) is fixedly connected to the bottom of the cutting frame (4). The mounting bracket (3) has a mounting groove (302) at its top. Several mounting posts (303) are fixedly installed in the mounting groove (302). Two symmetrically arranged extrusion rods (304) are inserted into the outer wall of the mounting post (303). One end of the extrusion rod (304) inserted into the mounting post (303) has an inclined surface. The top of the mounting post (303) is threaded with an extrusion bolt (305). One end of the extrusion bolt (305) inserted into the mounting post (303) is rotatably installed with an extrusion cone (306). The extrusion cone (306) is in contact with the inclined surface on the extrusion rod (304). An arc-shaped extrusion plate (307) is fixedly installed at the end of the extrusion rod (304) away from the mounting post (303).

2. The metal sleeve casting gate trimming machine tool according to claim 1, characterized in that: An arc-shaped movable plate (308) is provided on the side of the extrusion plate (307) away from the extrusion rod (304). A rubber layer is fixedly installed on the side of the movable plate (308) away from the extrusion plate (307). A spring groove (309) is provided on the side of the extrusion plate (307) near the movable plate (308). A pressure block (310) is fixedly installed on the side of the movable plate (308) near the extrusion plate (307). The pressure block (310) is inserted into the spring groove (309). Several return springs are fixedly installed between the pressure block (310) and the inner wall of the spring groove (309).

3. The metal sleeve casting gate trimming machine tool according to claim 2, characterized in that: The bottom of the mounting bracket (3) is provided with a number of spring push rods (311) arranged symmetrically in pairs. One end of the spring push rod (311) passes through the mounting bracket (3) and extends into the mounting groove (302). Both ends of the spring push rod (311) are hemispherical. The bottom of the connecting bracket (2) and both sides of the mounting bracket (3) are provided with second sliding grooves (202). A concave push frame (203) is provided below the connecting bracket (2). The bottom of the push frame (203) is slidably connected to the two second sliding grooves (202). The side of the push frame (203) near the mounting bracket (3) is provided with symmetrically arranged inclined surfaces.

4. The metal sleeve casting gate trimming machine tool according to claim 3, characterized in that: The top of the cutting frame (4) is provided with a receiving groove (401). The top of the cutting frame (4) and both sides of the receiving groove (401) are provided with a first sliding groove (402). A concave support frame (403) is provided above the cutting frame (4). The bottom of the support frame (403) is slidably connected to the two first sliding grooves (402) respectively. Two symmetrically arranged cutting motors (404) are fixedly installed in the support frame (403). The output ends of the two cutting motors (404) are fitted with cutting steel ropes (405) through drive wheels.

5. The metal sleeve casting gate trimming machine tool according to claim 4, characterized in that: The cutting motor (404) is a biaxial motor, and a grinding belt (406) is provided between the two ends of the output end of the cutting motor (404) away from the cutting steel rope (405) through a rotating wheel.

6. The metal sleeve casting gate trimming machine tool according to claim 5, characterized in that: The upper part of both sides of the connecting frame (2) is threaded with positioning bolts (204), and the outer wall of the limiting strip (301) on both sides of the mounting frame (3) is provided with limiting screw holes (312). The opening position of the limiting screw holes (312) corresponds to the installation position of the positioning bolts (204).

7. The metal sleeve casting gate trimming machine tool according to claim 6, characterized in that: Inclined surfaces are provided on the outer wall of the machine tool (1) and on both sides of the cutting frame (4).

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