Crankshaft polishing machine

Abstract

The invention relates to the field of workpiece surface treatment, in particular to a crankshaft polishing machine which comprises an outer box body, a roller rotationally connected into the outer box body and used for fixing workpieces, and a material receiving hopper for receiving abrasive materials, a discharging opening in the bottom of the material receiving hopper is fixedly connected with an opening pipe, and the opening pipe is slidably connected with a movable pipe capable of entering the outer box body. The outer wall of an opening, allowing grinding materials to pass through, of the roller is fixedly connected with a cylinder pipe, the movable pipe can be communicated with the cylinder pipe in an aligned mode, the opening of the cylinder pipe is slidably connected with a sealing block capable of sealing the opening of the cylinder pipe, and the opening pipe is provided with a movable pipe air cylinder capable of driving the movable pipe to move so that the movable pipe can be movably communicated with the cylinder pipe when feeding is needed, and then the sealing block can be movably opened. And the grinding material can be added into the roller, so that the grinding material can be conveniently added.

Description

Technical Field

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

[0002] The crankshaft is an important component in a refrigerator compressor. The processing technology of the crankshaft generally includes turning, hole opening and grooving, heat treatment, grinding and polishing, and inspection and debugging. Among them, the polishing step improves the surface quality of the crankshaft, reduces stress concentration points, and contributes to the overall quality of the crankshaft.

[0003] At present, there are various polishing methods. Among them, the drum polishing method can polish the crankshaft more comprehensively with higher efficiency. The workpiece is fixed in the drum, then the abrasive is put into the drum, and then the drum rotates at a high speed, so that the abrasive continuously collides with the surface of the crankshaft with high hardness to achieve comprehensive polishing. For example, a polishing machine for processing a refrigerator compressor crankshaft with the publication number CN218285049U has a similar polishing process.

[0004] Regarding the above related technology, when putting the abrasive into the drum, it is necessary to first connect and install the valve on the inlet pipe corresponding to the drum. After the abrasive is added, the inlet pipe is removed, and the process of adding the abrasive into the drum is very inconvenient. Summary of the Invention

[0005] In order to more conveniently add the abrasive into the drum, this application provides a crankshaft polishing machine.

[0006] A crankshaft polishing machine provided by this application adopts the following technical solution.

[0007] A crankshaft polishing machine includes an outer box body, a drum rotatably connected in the outer box body for fixing the workpiece, and a material receiving hopper for receiving the abrasive. A mouth pipe is fixedly connected to the bottom discharge port of the material receiving hopper. A moving pipe that can enter the outer box body is slidably connected to the mouth pipe. A barrel pipe is fixedly connected to the outer wall of the opening through which the drum allows the abrasive to pass. The moving pipe can be aligned and communicated with the barrel pipe. A sealing block that can close the opening of the barrel pipe is slidably connected to the opening of the barrel pipe. The mouth pipe is provided with a moving pipe cylinder that can drive the moving pipe to move.

[0008] By adopting the above technical solution, the moving pipe is moved towards the barrel pipe for communication, and then the sealing block opens the opening of the barrel pipe, so that the abrasive in the material receiving hopper can enter the drum, and the abrasive can be added more conveniently. After the abrasive is added, the sealing block moves to block the barrel pipe, and the moving pipe moves away from the barrel pipe. Then the drum can rotate for polishing. Adding the abrasive into the drum is more convenient, which helps to improve the overall polishing efficiency.

[0009] Optionally, an outer push block is slidably connected to the bobbin along the moving direction of the moving pipe. The bobbin can abut against the outer push block to force the outer push block to move. The outer push block is fixedly connected with a wedge block that can abut against the sealing block. The adjacent ends of the wedge block and the sealing block are both provided with inclined surfaces so that when the wedge block moves away from the roller, it can push the sealing block to block the bobbin. A wedge block spring for forcing the wedge block away from the roller is arranged in the bobbin, and a sealing block spring for forcing the sealing block to closely adhere to the wedge block is arranged in the bobbin.

[0010] By adopting the above technical solutions, the opening of the blockage of the bobbin by the sealing block depends on whether the moving pipe approaches and communicates with the roller, eliminating the need to separately set a power source for the movement of the sealing block and facilitating the synchronous rotation of the sealing block with the roller in the bobbin.

[0011] Optionally, two sealing blocks are provided, and the two sealing blocks can approach or move away from each other.

[0012] By adopting the above technical solutions, the moving distances of the sealing block and the outer push block are shortened, reducing the space occupied by the related settings of the bobbin.

[0013] Optionally, the moving direction of the outer push block is the radial direction of the roller, and the moving direction of the sealing block is consistent with the direction of the rotation axis of the roller.

[0014] By adopting the above technical solutions, during the rotation of the roller, the sealing block is not likely to move randomly due to centrifugal force, and the outer push block can more closely adhere to the sealing block under the action of centrifugal force, thereby ensuring that the sealing block can more stably block the bobbin during the rotation of the roller and reducing the possibility of abrasive leakage during the rotation of the roller.

[0015] Optionally, a discharge pipe that can be aligned and communicated with the bobbin when the roller is in the lower state is slidably connected to the bottom of the outer box body, and a discharge pipe cylinder for driving the movement of the discharge pipe is arranged in the outer box body.

[0016] By adopting the above technical solutions, when the abrasive needs to be replaced after being used for a certain period of time, the roller rotates until the bobbin faces downward, then the discharge pipe moves to communicate with the bobbin, and then the sealing block opens, enabling the abrasive to fall into the discharge pipe and be sent out.

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

[0018] By adopting the above technical solutions, the abrasive is not likely to leak during the process of feeding or discharging the abrasive from the roller.

[0019] Optionally, the sealing block includes a far block located at the end of the bobbin away from the roller and capable of abutting against the wedge block, a near block located at the end of the bobbin close to the roller, and a middle rod fixedly connected to the far block and the near block. The near block is closer to the roller than the outer push block.

[0020] By adopting the above technical solution, the moving pipe can be smoothly inserted into the bobbin tube without easily touching the sealing block, and less abrasive can enter the bobbin tube during the rotation of the drum.

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

[0022] By adopting the above technical solution, when the two near blocks are in contact with each other, the middle rod is not easily subjected to a large bending moment and is prone to deformation.

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

[0024] 1. The movement of the moving pipe and the discharge pipe, combined with the sealing block, enables 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 displaced randomly due to centrifugal force, and the outer pushing block can be more closely attached to the sealing block under the action of centrifugal force, thereby ensuring that the sealing block can more stably block the bobbin tube during the rotation of the drum. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0027] Figure 2 is Figure 1 a schematic bottom view structure diagram at the bottom of the bobbin tube in the middle;

[0028] Figure 3 is Figure 2 a sectional view of the surface of the side of the bobbin tube in the middle that is not penetrated by the outer pushing block, and a sectional view of the structure where the middle rod is provided with a sealing block spring.

[0029] Description of the reference numerals: 1. Outer box; 2. Drum; 3. Feeding hopper; 4. Mouth pipe; 41. Far block; 42. Near block; 43. Middle rod; 5. Moving pipe; 51. Bobbin tube; 52. Sealing block; 53. Moving pipe cylinder; 54. Outer pushing block; 55. Wedge block; 56. Wedge block spring; 57. Sealing block spring; 58. Discharge pipe; 59. Discharge pipe cylinder. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The following further describes the present application in detail with reference to the drawings.

[0031] The embodiment of the present application discloses a crankshaft polishing machine. Refer to Figure 1, including an outer box body 1 with feet provided at four corners of the bottom surface for placing on the ground. A movable door can be provided on one side of the outer box body 1. A roller 2 is rotatably connected inside the outer box body 1, and the rotation axis of the roller 2 is horizontal. An electric motor is provided outside the outer box body 1 to drive the roller 2 to rotate. A movable door is provided on the surface of the roller 2 so that it can be opened to put workpieces into the interior. A corresponding tooling can be provided inside the roller 2 to fix the crankshaft. Abrasives are placed inside the roller 2 so that the abrasives can polish the surface of the crankshaft when the roller 2 rotates.

[0032] Refer to Figure 1 , a receiving hopper 3 is detachably connected to the upper surface of the outer box body 1. The receiving hopper 3 can receive abrasives fed by an external conveyor belt. A mouth pipe 4 is fixedly connected and communicated at the bottom opening of the receiving hopper 3. A movable pipe 5 is slidably connected to the mouth pipe 4 in the vertical direction. A power rod is detachably connected to a movable pipe cylinder 53 on the vertical side of the movable pipe 5, and the movable pipe 5 passes through and is slidably connected to the outer box body 1. A barrel pipe 51 is fixedly connected and communicated to the outer surface of the roller 2, and the length direction of the barrel pipe 51 is consistent with the radial direction of the roller 2. The movable pipe 5 can be inserted into the barrel pipe 51 so that the abrasives can enter the roller 2.

[0033] Refer to Figure 2 and Figure 3 , a sealing block 52 that can close the barrel pipe 51 is slidably connected inside the barrel pipe 51. Two sealing blocks 52 can be provided, and the two sealing blocks 52 can approach or move away from each other along the rotation axis direction of the roller 2. Outer pushing blocks 54 are slidably connected to both opposite side surfaces of the barrel pipe 51 along the length direction of the barrel pipe 51, and each outer pushing block 54 penetrates through the surface of the barrel pipe 51 where it is located. A wedge block 55 is slidably connected inside the barrel pipe 51 along the length direction of the barrel pipe 51. The wedge block 55 is fixedly connected to the outer pushing block 54, and when the wedge block 55 moves away from the roller 2, it can force the two sealing blocks 52 to approach each other. Moreover, a wedge block spring 56 that forces the wedge block 55 to move away from the roller 2 is provided inside the barrel pipe 51, and a sealing block spring 57 that forces the two sealing blocks 52 to move away from each other is also provided inside the barrel pipe 51. When the outer pushing block 54 is not affected by an external force, the wedge block spring 56 can force the wedge block 55 to move up smoothly, so that the sealing block spring 57 is compressed.

[0034] Refer to Figure 3, each sealing block 52 includes a far block 41, a near block 42 and a middle rod 43. The near block 42 is located at one end of the tube 51 close to the roller 2, and the two near blocks 42 can abut against each other to seal the tube 51. The far block 41 is located in the wall thickness on the side of the tube 51 away from the roller 2. The middle rod 43 is fixedly connected to the adjacent surfaces of the near block 42 and the far block 41. The middle rod 43 is located in the wall thickness of the tube 51 and is connected to the adjacent sides of the two near blocks 42, so that when the two near blocks 42 abut against each other, the two middle rods 43 abut against each other simultaneously. An inclined surface is provided between the adjacent side surfaces of the wedge block 55 and the far block 41, so that the movement of the wedge block 55 away from the roller 2 can smoothly push the far block 41 to move. Moreover, holes are formed in the adjacent side surfaces of the two middle rods 43 for the sealing block spring 57 to be placed in.

[0035] Referring to Figure 3 , a discharge pipe 58 is slidably connected to the bottom of the outer box body 1 in the vertical direction. A power rod is detachably connected to the bottom surface of the outer box body 1, and a discharge pipe cylinder 59 whose power rod is detachably connected to the outer vertical surface of the discharge pipe 58. The upper end of the discharge pipe 58 can be sleeved on the tube 51 in the state where it is located at the bottom of the roller 2, so that the discharge pipe 58 can push 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 that have been used in the roller 2 for a long time can be sent out through the discharge pipe 58.

[0036] Moreover, bumps can be provided on the outer surface of the roller 2, and distance sensors are provided in both the upper and lower parts of the outer box body 1. When the bumps on the roller 2 are aligned with the distance sensors in the upper and lower parts of the outer box body 1, at this time the tube 51 is located at the highest and lowest positions of the roller 2, so as to accurately position the position of the tube 51.

[0037] The implementation principle of a crankshaft polishing machine according to an embodiment of the present application is as follows: When it is necessary to add abrasive into the roller 2, the roller 2 rotates until the tube 51 is vertically upward. Then the power rod of the moving tube cylinder 53 extends so that the moving tube 5 moves downward and is inserted into the 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 downward synchronously. The two far blocks 41 move away from each other under the action of the sealing block spring 57, so that both between the two middle rods 43 and between the two near blocks 42 move away from each other. Then the abrasive is fed into the receiving hopper 3 and enters the roller 2 through the mouth tube 4, the moving tube 5 and the tube 51.

[0038] When it is necessary to send out the abrasive in the drum 2, the drum 2 rotates until the tube 51 is vertically downward, and then the power rod of the discharge pipe cylinder 59 shortens, so that the discharge pipe 58 moves upward and sleeves on the tube 51. The discharge pipe 58 will push 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 spaces between the two middle rods 43 and between the two near blocks 42 are both widened. Then, most of the abrasive in the drum 2 is sent out through the discharge pipe 58 into the box below, and the remaining small part of the abrasive impurities are swept into the discharge pipe 58 by opening the movable door on the drum 2 to complete the sending out of the abrasive in the drum 2.

[0039] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A crankshaft polishing machine, comprising an outer box body (1), a drum (2) rotatably connected inside the outer box body (1) and used for fixing a workpiece, and a material receiving hopper (3) for receiving abrasive, characterized in that: A discharge pipe (4) is fixedly connected to the bottom discharge port of the material receiving hopper (3). A moving pipe (5) that can enter the outer box body (1) is slidably connected to the discharge pipe (4). A cylinder pipe (51) is fixedly connected to the outer wall of the opening through which the abrasive passes in the roller (2). The moving pipe (5) can be aligned and communicated with the cylinder pipe (51). A sealing block (52) that can close the opening of the cylinder pipe (51) is slidably connected to the opening of the cylinder pipe (51). The discharge pipe (4) is provided with a moving pipe cylinder (53) that can drive the moving pipe (5) to move.

2. A crankshaft polishing machine according to claim 1, characterized in that: An outer push block (54) is slidably connected to the cylinder pipe (51) along the moving direction of the moving pipe (5). The cylinder pipe (51) can abut against the outer push block (54) to force the outer push block (54) to move. A wedge block (55) that can abut against the sealing block (52) is fixedly connected to the outer push block (54). The adjacent ends of the wedge block (55) and the sealing block (52) are both provided with inclined surfaces so that when the wedge block (55) moves away from the roller (2), it can push the sealing block (52) to block the cylinder pipe (51). A wedge block spring (56) that forces the wedge block (55) to move away from the roller (2) is arranged in the cylinder pipe (51). A sealing block spring (57) that forces the sealing block (52) to closely adhere to the wedge block (55) is arranged in the cylinder pipe (51).

3. A crankshaft polishing machine according to claim 2, characterized in that: Two sealing blocks (52) are provided, and the two sealing blocks (52) can approach or move away from each other.

4. A crankshaft polishing machine according to claim 2, wherein: The moving direction of the outer push block (54) is the radial direction of the roller (2), and the moving direction of the sealing block (52) is consistent with the rotation axis direction of the roller (2).

5. The crankshaft polishing machine according to claim 2, wherein: A discharge pipe (58) that can be aligned and communicated with the cylinder pipe (51) when the roller (2) is in the lower state is slidably connected to the bottom of the outer box body (1). An outer box body (1) is provided with a discharge pipe cylinder (59) that drives the discharge pipe (58) to move.

6. The crankshaft polishing machine according to claim 5, wherein: The discharge pipe (58) is sleeved on the cylinder pipe (51), the moving pipe (5) is inserted into the cylinder pipe (51), and the outer push block (54) penetrates through the inner and outer sides of the cylinder pipe (51).

7. A crankshaft polishing machine according to claim 6, characterized in that: The sealing block (52) includes a far block (41) located at the end of the cylinder pipe (51) away from the roller (2) and capable of abutting against the wedge block (55), a near block (42) located at the end of the cylinder pipe (51) close to the roller (2), and a middle 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 outer push block (54).

8. A crankshaft polishing machine according to claim 7, characterized in that: The middle rod (43) is connected to the side of the far block (41) away from the wedge block (55) and the side of the near block (42) that can enter the cylinder pipe (51).

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