Crankshaft polishing machine

Abstract

The application relates to the field of workpiece surface treatment, in particular to a crankshaft polishing machine which comprises an outer box body, a roller rotatably connected in the outer box body and used for fixing a workpiece, a material receiving hopper used for receiving abrasive materials, a mouth pipe fixedly connected with a material outlet at the bottom of the material receiving hopper, a movable pipe slidably connected with the mouth pipe and capable of entering the outer box body, a cylinder pipe fixedly connected with the outer wall of an opening of the roller and used for passing the abrasive materials, the movable pipe is capable of being aligned and communicated with the cylinder pipe, a sealing block slidably connected with the opening of the cylinder pipe and capable of sealing the opening of the cylinder pipe, and a movable pipe cylinder arranged on the mouth pipe and used for driving the movable pipe to move, so that the movable pipe is communicated with the cylinder pipe when the abrasive materials need to be added, then the sealing block is moved to be opened, and the abrasive materials can be added into the roller, so that the abrasive materials are added.

Description

Technical Field

[0001] This application relates to the field of workpiece surface treatment, and in particular to a crankshaft polishing machine. Background Technology

[0002] The crankshaft is a crucial component in a refrigerator compressor. Its manufacturing process typically involves turning, drilling and grooving, heat treatment, grinding and polishing, and testing and adjustment. Among these steps, polishing improves the crankshaft's surface quality, reduces stress concentration points, and contributes to the overall quality of the crankshaft.

[0003] There are various polishing methods available today. Among them, drum polishing is a more efficient and comprehensive method for polishing crankshafts. The workpiece is fixed in a drum, and then the abrasive is placed inside the drum. The drum then rotates at a high speed, causing the abrasive to continuously collide with the crankshaft surface, which has a high hardness, to achieve comprehensive polishing. For example, a similar polishing process is used in a polishing machine for processing a refrigerator compressor crankshaft, which is disclosed in CN218285049U.

[0004] Regarding the aforementioned technologies, when adding abrasive into the drum, it is necessary to first connect and install the feed pipe to the valve on the drum, and then disconnect the feed pipe after the abrasive has been added. The process of adding abrasive into the drum is very inconvenient. Summary of the Invention

[0005] To facilitate the addition of abrasive to the drum, this application provides a crankshaft polishing machine.

[0006] The crankshaft polishing machine provided in this application adopts the following technical solution.

[0007] A crankshaft polishing machine includes an outer casing, a roller rotatably connected to the outer casing for fixing workpieces, and a receiving hopper for receiving abrasive. A discharge port at the bottom of the receiving hopper is fixedly connected to an outlet pipe, and a moving pipe that can enter the outer casing is slidably connected to the outlet pipe. A cylindrical tube is fixedly connected to the outer wall of the opening of the roller through which the abrasive passes. The moving pipe can be aligned and connected to the cylindrical tube. A sealing block that can close the opening of the cylindrical tube is slidably connected to the opening of the cylindrical tube. The outlet pipe is equipped with a moving pipe cylinder that can drive the moving pipe to move.

[0008] By adopting the above technical solution, the moving tube is moved toward the cylinder to connect, and then the sealing block opens the cylinder opening so that the abrasive in the receiving hopper can enter the drum, making it easier to add the abrasive. After the abrasive is added, the sealing block moves to block the cylinder, and the moving tube moves away from the cylinder. Then the drum can rotate to perform polishing. Adding abrasive to the drum is more convenient and helps to improve the overall polishing efficiency.

[0009] Optionally, the bobbin is slidably connected to an external push block along the moving direction of the tube. The bobbin can abut against the external push block to force the external push block to move. The external push block is fixedly connected to a wedge block that can abut against the sealing block. The wedge block and the sealing block are both set with inclined surfaces at their near ends so that when the wedge block moves away from the roller, it can push the sealing block to seal the bobbin. The bobbin is provided with a wedge block spring that forces the wedge block away from the roller, and a sealing block spring that forces the sealing block to stick tightly to the wedge block.

[0010] By adopting the above technical solution, the sealing block's opening of the cylinder depends on whether the moving pipe is close to and connected to the drum. There is no need to set up a separate power source for the movement of the sealing block, and it is also convenient for the sealing block to rotate synchronously with the drum in the cylinder.

[0011] Optionally, two sealing blocks are provided, and the two sealing blocks can be close to or far apart.

[0012] By adopting the above technical solution, the moving distance of the sealing block and the pusher block is shortened, so that the space occupied by the related parts of the tube is reduced.

[0013] Optionally, the outward pushing block moves in the radial direction of the roller, and the sealing block moves in the same direction as the rotation axis of the roller.

[0014] By adopting the above technical solution, the sealing block is less likely to move arbitrarily due to centrifugal force during the rotation of the drum, and the push block can adhere more tightly to the sealing block under the action of centrifugal force. This ensures that the sealing block can more stably seal the tube during the rotation of the drum, thereby reducing the possibility of abrasive leakage during the rotation of the drum.

[0015] Optionally, the bottom of the outer casing is slidably connected to a discharge pipe that can be aligned with and connected to the cylinder when it is in the lower part of the drum, and the outer casing is provided with a discharge pipe cylinder for driving the discharge pipe to move.

[0016] By adopting the above technical solution, when the abrasive needs to be replaced after a certain period of use, the drum rotates to face downwards, then the discharge pipe moves to connect with the cylinder, and then the sealing block opens so that the abrasive can fall into the discharge pipe and be sent out.

[0017] Optionally, the discharge pipe is sleeved on the cylindrical tube, the moving pipe is inserted into the cylindrical tube, and the outer push block passes through the inner and outer sides of the cylindrical tube.

[0018] By adopting the above technical solution, the abrasive is less likely to leak out during the process of feeding or feeding the abrasive into or out of the drum.

[0019] Optionally, the sealing block includes a far block located at the end of the tube away from the drum and capable of abutting against the wedge block, a near block located at the end of the tube close to the drum, and a central rod fixedly connected to the far block and the near block, wherein the near block is closer to the drum than the push block.

[0020] By adopting the above technical solution, the moving tube can be smoothly inserted into the cylinder without easily contacting the sealing block, and during the rotation of the drum, it is less likely that a lot of abrasive will enter the cylinder.

[0021] Optionally, the middle rod is connected to the side of the far block away from the wedge and the side of the near block that can enter the tube.

[0022] By adopting the above technical solution, when the two near blocks come into contact, the central rod is less likely to be subjected to a large bending moment and is more prone to deformation.

[0023] In summary, this application includes at least the following beneficial effects.

[0024] 1. The movement of the moving tube and the discharge tube, combined with the sealing block, allows the abrasive to be conveniently fed into or out of the drum.

[0025] 2. During the rotation of the drum, the sealing block is not easily moved by centrifugal force, and the push block can adhere more tightly to the sealing block under the action of centrifugal force, thereby ensuring that the sealing block can more stably seal the tube during the rotation of the drum. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the main structure of this application;

[0027] Figure 2 yes Figure 1 A schematic diagram of the structure from below at the bottom of the middle cylinder;

[0028] Figure 3 yes Figure 2 A cross-sectional view of the side of the middle tube not penetrated by the outer push block, and a structural schematic diagram showing the section where the middle rod is set with the sealing block spring.

[0029] Explanation of reference numerals in the attached drawings: 1. Outer casing; 2. Roller; 3. Receiving hopper; 4. Inlet pipe; 41. Far block; 42. Near block; 43. Middle rod; 5. Moving pipe; 51. Cylindrical tube; 52. Sealing block; 53. Moving pipe cylinder; 54. Outward push block; 55. Wedge block; 56. Wedge block spring; 57. Sealing block spring; 58. Discharge pipe; 59. Discharge pipe cylinder. Detailed Implementation

[0030] The present application will be further described in detail below with reference to the accompanying drawings.

[0031] This application discloses a crankshaft polishing machine, with reference to... Figure 1The outer casing 1 includes four corner supports for placement on the ground. A movable door can be installed on one side of the outer casing 1. A roller 2 is rotatably connected inside the outer casing 1. The axis of rotation of the roller 2 is horizontal. A motor is installed outside the outer casing 1 to drive the roller 2 to rotate. A movable door is installed on the surface of the roller 2 to open and put the workpiece inside. A corresponding tooling can be installed inside the roller 2 to fix the crankshaft. Abrasive is placed inside the roller 2 so that the abrasive can polish the surface of the crankshaft when the roller 2 rotates.

[0032] Reference Figure 1 A receiving hopper 3 is detachably connected to the upper surface of the outer casing 1. The receiving hopper 3 can receive abrasive material fed in by an external conveyor belt. A pipe 4 is fixedly connected and connected to the bottom opening of the receiving hopper 3. A moving pipe 5 is slidably connected to the pipe 4 in the vertical direction. A moving pipe cylinder 53 is detachably connected to the pipe 4 and detachably connected to the vertical side of the moving pipe 5. The moving pipe 5 passes through and is slidably connected to the outer casing 1. A cylinder 51 is fixedly connected and connected to the outer surface of the roller 2. The length direction of the cylinder 51 is consistent with the radial direction of the roller 2. The moving pipe 5 can be inserted into the cylinder 51 to allow the abrasive material to enter the roller 2.

[0033] Reference Figure 2 and Figure 3 A sealing block 52, capable of closing the tube 51, is slidably connected inside the tube 51. Two sealing blocks 52 can be provided, and the two sealing blocks 52 can move closer or further apart along the rotation axis of the roller 2. External push blocks 54 are slidably connected to both opposite sides of the tube 51 along its own length, each external push block 54 penetrating the surface of its respective tube 51. A wedge block 55 is slidably connected inside the tube 51 along its own length, and the wedge block 55 is fixedly connected to the external push blocks 54. When the wedge block 55 moves away from the roller 2, it forces the two sealing blocks 52 closer together. Furthermore, a wedge spring 56 is provided inside the tube 51 to force the wedge block 55 away from the roller 2, and a sealing spring 57 is also provided inside the tube 51 to force the two sealing blocks 52 away from each other. When the external push blocks 54 are not subjected to external force, the wedge spring 56 can force the wedge block 55 to move smoothly upward, thereby compressing the sealing spring 57.

[0034] Reference Figure 3Each sealing block 52 includes a distal block 41, a proximal block 42, and a central rod 43. The proximal block 42 is located at the end of the tube 51 near the roller 2, and the two proximal blocks 42 can abut against each other to seal the tube 51. The distal block 41 is located in the wall thickness of the tube 51 on the side away from the roller 2. The central rod 43 is fixedly connected to the proximal surfaces of the proximal block 42 and the distal block 41. The central rod 43 is located in the wall thickness of the tube 51 and is connected to the proximal side of the two proximal blocks 42 so that when the two proximal blocks 42 abut against each other, the two central rods 43 abut against each other simultaneously. The wedge block 55 and the proximal side of the distal block 41 are arranged at an angle so that the movement of the wedge block 55 away from the roller 2 can smoothly push the distal block 41 to move. In addition, holes are opened on the proximal sides of the two central rods 43 for the sealing block spring 57 to be inserted.

[0035] Reference Figure 3 The bottom of the outer casing 1 is slidably connected to the discharge pipe 58 in the vertical direction. The bottom surface of the outer casing 1 is detachably connected to the discharge pipe cylinder 59, which is detachably connected to the vertical outer surface of the discharge pipe 58. The upper end of the discharge pipe 58 can be sleeved on the cylinder 51 located at the bottom of the drum 2, so that the discharge pipe 58 pushes the outer push block 54 to move upward, so that the two near blocks 42 move away from each other. The abrasive and some impurities used in the drum 2 for a long time can be sent out through the discharge pipe 58.

[0036] Furthermore, protrusions can be provided on the outer surface of the roller 2, and distance sensors are provided on the upper and lower parts of the outer housing 1. When the protrusions of the roller 2 are aligned with the distance sensors on the upper and lower parts of the outer housing 1, the bobbin 51 is located at the highest and lowest points of the roller 2, so as to accurately position the bobbin 51.

[0037] The implementation principle of a crankshaft polishing machine according to an embodiment of this application is as follows: When abrasive needs to be added into the drum 2, the drum 2 rotates until the cylinder tube 51 is vertically upward. Then, the power rod of the moving tube cylinder 53 extends so that the moving tube 5 moves down and is inserted into the cylinder tube 51. Then, the moving tube 5 abuts against the outer push block 54 so that the outer push block 54 and the wedge block 55 move down synchronously. The two far blocks 41 move away from each other under the action of the sealing block spring 57 so that the two middle rods 43 and the two near blocks 42 are all far apart. Then, the abrasive is fed into the receiving hopper 3 and enters the drum 2 through the inlet tube 4, the moving tube 5 and the cylinder tube 51.

[0038] When the abrasive in the drum 2 needs to be discharged, the drum 2 rotates until the cylinder tube 51 is vertically downward. Then, the power rod of the discharge pipe cylinder 59 shortens, causing the discharge pipe 58 to move upward and fit onto the cylinder tube 51. The discharge pipe 58 pushes the outer push block 54 upward, so that the wedge block 55 moves upward. The two far blocks 41 move away from each other under the action of the sealing block spring 57, so that the two middle rods 43 and the two near blocks 42 are also far apart. Then, most of the abrasive in the drum 2 is discharged into the box below through the discharge pipe 58. The remaining small part of abrasive impurities is swept into the discharge pipe 58 through the opening of the movable door on the drum 2, thus completing the discharge of the abrasive in the drum 2.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A crankshaft polishing machine, comprising an outer housing (1), a roller (2) rotatably connected within the outer housing (1) for fixing workpieces, and a receiving hopper (3) for receiving abrasives, characterized in that: The bottom outlet of the receiving hopper (3) is fixedly connected to the inlet pipe (4), and the inlet pipe (4) is slidably connected to the moving pipe (5) that can enter into the outer box (1). The outer wall of the opening of the roller (2) for the abrasive to pass through is fixedly connected to the cylinder pipe (51). The moving pipe (5) can be aligned and connected to the cylinder pipe (51). The opening of the cylinder pipe (51) is slidably connected to the sealing block (52) that can close the opening of the cylinder pipe (51). The inlet pipe (4) is provided with a moving pipe cylinder (53) that can drive the moving pipe (5) to move. The cylindrical tube (51) has two sides with sliding push blocks (54) connected to it along its length. The moving tube (5) can abut against the push blocks (54) to force the push blocks (54) to move. The push blocks (54) are fixedly connected with wedges (55) that can abut against the sealing blocks (52). The wedges (55) and the sealing blocks (52) are both inclined at their near ends so that when the wedges (55) are away from the roller (2), they can push the sealing blocks (52) to seal the cylindrical tube (51). The cylindrical tube (51) is provided with a wedge spring (56) that forces the wedges (55) away from the roller (2). The cylindrical tube (51) is provided with a sealing spring (57) that forces the sealing blocks (52) to stick tightly to the wedges (55). Two sealing blocks (52) are provided, and the two sealing blocks (52) can be close to each other or far apart; The bottom of the outer casing (1) is slidably connected to a discharge pipe (58) that can be aligned with the tube (51) when it is in the lower state of the drum (2). The outer casing (1) is provided with a discharge pipe cylinder (59) that drives the discharge pipe (58) to move.

2. The crankshaft polishing machine according to claim 1, characterized in that: The outward push block (54) moves in the radial direction of the roller (2), and the sealing block (52) moves in the same direction as the rotation axis of the roller (2).

3. A crankshaft polishing machine according to claim 1, characterized in that: The discharge pipe (58) is sleeved on the cylinder (51), the moving pipe (5) is inserted into the cylinder (51), and the pusher block (54) passes through the inner and outer sides of the cylinder (51).

4. A crankshaft polishing machine according to claim 3, characterized in that: The sealing block (52) includes a far block (41) located at the end of the tube (51) away from the roller (2) and able to abut against the wedge block (55), a near block (42) located at the end of the tube (51) close to the roller (2), and a central rod (43) fixedly connected to the far block (41) and the near block (42). The near block (42) is closer to the roller (2) than the push block (54).

5. A crankshaft polishing machine according to claim 4, characterized in that: The middle rod (43) is connected to the side of the far block (41) away from the wedge (55) and the side of the near block (42) that can enter into the tube (51).

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