Ejector pin burr removing device

Abstract

The utility model discloses an ejector pin burr removing device which is used for synchronously removing multiple ejector pin burrs on the same face of an aluminum alloy product and comprises a base and a power machine frame which is located above the base and can move up and down relative to the base, and a burr removing unit is arranged on the power machine frame. The burr removing unit comprises a motor, a multi-shaft device and a plurality of burr removing brush heads, the multi-shaft device is arranged on the power rack and comprises a main rotating shaft connected with an output shaft of the motor and a plurality of branch rotating shafts mutually linked with the main rotating shaft, and each branch rotating shaft is provided with one burr removing brush head; the deburring brush head is a cylindrical body formed by binding a plurality of steel wires with the diameter of 0.8 mm, and the polishing end, making contact with a product, of the deburring brush head is in a dispersed shape. The ejector pin burr removing device can efficiently and accurately remove ejector pin burrs of aluminum alloy products, and is simple in structure, low in production input cost and wide in application range.

Description

Technical Field

[0001] This utility model relates to the field of machining equipment technology, specifically to a pin burr removal device. Background Technology

[0002] For die-cast aluminum alloy products, such as gearbox housings and wiper frames, burrs on the ejector pins can affect subsequent machining and assembly. Therefore, it is necessary to remove these burrs completely. Ejector pin burrs refer to the burrs left on the die-cast parts during demolding due to the action of the ejector pins.

[0003] Currently, methods for removing burrs from ejector pins of die-cast aluminum parts include: ① Manual grinding using simple deburring tools, which is not only inefficient and labor-intensive, but also makes it difficult to guarantee consistent deburring quality. ② Automated ejector pin burr removal equipment, which is not only complex in structure and inconvenient to operate, but also removes ejector pin burrs one by one, resulting in low removal efficiency and poor versatility. Summary of the Invention

[0004] To overcome the above-mentioned defects, this utility model provides a pin burr removal device, which can efficiently and accurately remove pin burrs from aluminum alloy products, and has a simple structure, low production cost and wide applicability.

[0005] The technical solution adopted by this utility model to solve its technical problem is: to provide a pin burr removal device for simultaneously removing multiple pin burrs on the same surface of an aluminum alloy product. The removal device includes a base and a power frame located above the base and capable of moving up and down relative to the base. A burr removal unit is provided on the power frame. The burr removal unit includes a motor, a multi-axis device, and multiple deburring brush heads. The multi-axis device is located on the power frame and includes a main rotating shaft connected to the output shaft of the motor and several sub-rotating shafts that are interconnected with the main rotating shaft. Each sub-rotating shaft is provided with a deburring brush head.

[0006] The deburring brush head is a columnar body made of several steel wires with a diameter of 0.08mm bound together, and the grinding end that contacts the product is dispersed.

[0007] As a further improvement of this utility model, the deburring brush head is mounted on the power frame and connected to the split shaft via a swing arm assembly;

[0008] The swing arm assembly includes a horizontally arranged crossbar that is detachably connected to the power frame, and a mounting shaft hole located vertically at the end of the crossbar.

[0009] The deburring brush head is rotatably connected to the mounting shaft hole via a drive shaft.

[0010] As a further improvement of this utility model, the drive shaft is movably inserted through the mounting shaft hole and is connected to the split rotating shaft via a universal joint.

[0011] The lower end of the drive shaft is connected to the deburring brush head via a clamp.

[0012] As a further improvement of this utility model, a buffer spring is sleeved on the transmission shaft, and the two ends of the buffer spring elastically abut against the lower end face of the mounting shaft hole and the upper end face of the chuck, respectively.

[0013] As a further improvement of this utility model, a waist-shaped slot is formed on the crossbar along its length.

[0014] As a further improvement of this utility model, the top surface of the base is provided with a plurality of guide grooves for positioning the product fixture plate, and the plurality of guide grooves are parallel to each other and spaced apart.

[0015] As a further improvement of this utility model, a clamping assembly is provided on the side of the fixture plate. The clamping assembly includes a screw rod vertically disposed on the base, a clamping block movably sleeved on the screw rod, and a nut threadedly connected to the screw rod so that the clamping block clamps and fixes the fixture plate on the base.

[0016] The beneficial effects of this invention are: by setting multiple deburring brush heads and a multi-axis device, multiple pin burrs on the same surface of aluminum alloy products can be removed simultaneously, greatly improving deburring efficiency; the design of the deburring brush heads ensures that burrs of different shapes and sizes are effectively removed without affecting the surface quality of the product; the device realizes automated deburring operation, eliminating the need for manual grinding, reducing the labor intensity of workers and production costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the swing arm assembly of this utility model.

[0019] Referring to the accompanying drawings, the following explanations are provided:

[0020] 1. Base; 11. Guide groove; 2. Power frame; 3. Motor; 4. Multi-spindle; 41. Main shaft; 42. Sub-shaft; 5. Deburring brush head; 51. Grinding end; 6. Swing arm assembly; 61. Crossbar; 611. Waist-shaped slot; 62. Mounting shaft hole; 63. Drive shaft; 64. Universal joint; 65. Chuck; 66. Buffer spring; 7. Fixture plate; 8. Clamping assembly; 81. Screw; 82. Clamping block; 83. Nut. Detailed Implementation

[0021] The preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0022] This utility model provides a pin burr removal device for simultaneously removing multiple pin burrs on the same surface of aluminum alloy products, which improves the efficiency and quality of deburring, and reduces labor intensity and production costs.

[0023] See Figures 1 to 2 This utility model provides an embodiment of a ejector pin burr removal device, which includes a base 1 and a power frame 2 located above the base 1 and capable of vertical movement relative to the base 1. A burr removal unit is mounted on the power frame 2. The power frame 2 achieves vertical movement via a moving module, allowing the burr removal unit to approach or move away from the product, thereby achieving the removal of ejector pin burrs. The moving module is a conventional technique in this field and will not be described in detail here.

[0024] The deburring unit includes a motor 3, a multi-spindle unit 4, and multiple deburring brush heads 5. The motor 3 is a three-phase asynchronous motor, providing driving force for the entire deburring process. The multi-spindle unit 4 is located on the power frame 2 and includes a main rotating shaft 41 connected to the output shaft of the motor 3, and several branch rotating shafts 42 that are interconnected with the main rotating shaft 41. The multi-spindle unit transmits the motor's power to the multiple branch rotating shafts 42 via couplings, enabling one motor to drive multiple deburring brush heads to rotate synchronously.

[0025] Each rotating shaft 42 is equipped with a deburring brush head 5. The deburring brush head 5 is a cylindrical body made of several steel wires with a diameter of 0.08mm bound together, and its grinding end 51 that contacts the product is dispersed. This design, on the one hand, gives the deburring brush head 5 sufficient hardness, allowing it to act precisely and forcefully on the pin burrs during rotation, ensuring that the burrs are effectively removed. On the other hand, the small diameter of the steel wires and their cylindrical shape also give the brush head a certain degree of flexibility. This flexibility allows the deburring brush head 5 to flexibly adapt to pin burrs of different shapes and sizes.

[0026] Furthermore, the dispersed working end 51 increases the contact area with burrs, improving deburring efficiency. This dispersed structure also prevents excessive localized pressure when the brush head contacts the product surface outside the burrs, effectively avoiding significant wear on the product surface due to excessive friction and ensuring the surface quality of the aluminum alloy product. It should be noted that, to ensure the degree of dispersion of the working end 51, a wire (not shown in the figure) can be used for restraint and binding at a suitable distance near the working end.

[0027] Furthermore, the deburring brush head 5 is mounted on the power frame 2 and connected to the split shaft 42 via the swing arm assembly 6. The swing arm assembly 6 includes a horizontally arranged crossbar 61 detachably connected to the power frame 2, and a mounting shaft hole 62 vertically located at the end of the crossbar 61. The crossbar 61 has a slotted hole 611 along its length, which allows for easy adjustment of the crossbar 61's mounting position on the power frame 2. This facilitates the removal of burrs from different specifications of aluminum alloy products or from different locations on aluminum alloy products, demonstrating strong versatility.

[0028] Furthermore, the drive shaft 63 is movably inserted through the mounting shaft hole 62 and is connected to the auxiliary rotating shaft 42 via a universal joint 64. The drive shaft 63 can rotate smoothly and move vertically relative to the mounting shaft hole 62. Specifically, the drive shaft 63 is connected to the mounting shaft hole 62 using a clearance fit. The mounting shaft hole restricts the radial position of the drive shaft, while the universal joint restricts its axial position. Simultaneously, the universal joint 64 has a certain degree of flexibility, which can compensate for the angular deviation between the drive shaft 63 and the auxiliary rotating shaft 42 caused by vertical movement, ensuring that power is stably transmitted from the auxiliary rotating shaft 42 to the drive shaft 63, thereby driving the deburring brush head 5 to rotate.

[0029] To reduce friction and ensure the flexible movement of the drive shaft 63, a lubricant, such as a high-temperature resistant and wear-resistant special grease, is applied to the inner wall of the mounting hole 62 and the outer surface of the drive shaft 63. This grease can form a uniform lubricating film between the drive shaft 63 and the mounting hole 62, effectively reducing the coefficient of friction between them. This allows the drive shaft 63 to rotate freely around its own axis and also to move up and down in a certain range in the vertical direction, thus meeting the requirements for the flexible movement of the drive shaft 63 during the deburring process. This ensures that the deburring brush head 5 can accurately contact the pin burrs on the aluminum alloy product and efficiently complete the deburring task.

[0030] The lower end of the drive shaft 63 is connected to the deburring brush head 5 via a clamp 65, which facilitates the installation and replacement of the deburring brush head 5.

[0031] Furthermore, a buffer spring 66 is fitted onto the drive shaft 63, with both ends of the buffer spring 66 elastically abutting against the lower end face of the mounting shaft hole 62 and the upper end face of the clamp 65, respectively. The buffer spring 66 can play a buffering role during the deburring process, preventing the deburring brush head 5 from rigidly colliding with the aluminum alloy product, thus protecting the product and the deburring brush head 5.

[0032] Furthermore, the top surface of the base 1 is provided with multiple guide grooves 11 for positioning the product fixture plate 7. The multiple guide grooves 11 are parallel to each other and spaced apart. The guide grooves 11 can accurately and quickly position the product fixture plate 7.

[0033] Furthermore, a clamping assembly 8 is provided on the side of the fixture plate 7. The clamping assembly 8 includes a screw 81 vertically disposed on the base 1, a clamping block 82 movably sleeved on the screw 81, and a nut 83 threadedly connected to the screw 81 so that the clamping block 82 clamps and fixes the fixture plate 7 onto the base 1. By rotating the nut 83, the position of the clamping block 82 can be adjusted to firmly fix the product fixture plate 7 onto the base 1, preventing the product from moving during the deburring process. At the same time, the fixture plate can be quickly changed according to the processing of products of different specifications.

[0034] In summary, the deburring device for ejector pins provided by this utility model, by setting multiple deburring brush heads 5 and a multi-axis device 4, can simultaneously remove multiple ejector pin burrs on the same surface of aluminum alloy products, greatly improving deburring efficiency. The working ends 51 of the deburring brush heads 5 are distributed and can be flexibly adjusted by the swing arm assembly 6, improving versatility and ensuring the accuracy of deburring, thus improving the quality of deburring. This device realizes automated deburring operation, eliminating the need for manual grinding, reducing the labor intensity of workers and production costs; the buffer spring 66 can prevent rigid collision between the deburring brush heads and the aluminum alloy products, protecting the product surface from damage.

[0035] Many specific details have been set forth in the above description to provide a full understanding of this utility model. However, the above description is only a preferred embodiment of this utility model, and this utility model can be implemented in many other ways different from those described herein. Therefore, this utility model is not limited to the specific embodiments disclosed above. Furthermore, any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model using the methods and techniques disclosed above, or modify it into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the content of the technical solution of this utility model, shall still fall within the protection scope of the technical solution of this utility model.

Claims

1. A burr removal device for simultaneously removing multiple burrs on the same surface of an aluminum alloy product, the device comprising a base (1) and a power frame (2) located above the base (1) and capable of moving up and down relative to the base (1), characterized in that: The power frame (2) is provided with a burr removal unit. The burr removal unit includes a motor (3), a multi-spindle (4), and a plurality of deburring brush heads (5). The multi-spindle (4) is provided on the power frame (2) and includes a main shaft (41) connected to the output shaft of the motor (3) and a plurality of branch shafts (42) that are interconnected with the main shaft (41). Each branch shaft (42) is provided with the deburring brush head (5). The deburring brush head (5) is a columnar body made of several steel wires with a diameter of 0.08 mm, and its grinding end (51) in contact with the product is dispersed.

2. The burr removal device for ejector pins according to claim 1, characterized in that: The deburring brush head (5) is mounted on the power frame (2) via the swing arm assembly (6) and connected to the split shaft (42). The swing arm assembly (6) includes a horizontally arranged crossbar (61) detachably connected to the power frame (2) and a mounting shaft hole (62) provided vertically at the end of the crossbar (61). The deburring brush head (5) is rotatably connected to the mounting shaft hole (62) via a drive shaft (63).

3. The burr removal device for ejector pins according to claim 2, characterized in that: The drive shaft (63) is movably inserted through the mounting shaft hole (62) and is connected to the split shaft (42) via the universal joint (64); The lower end of the drive shaft (63) is connected to the deburring brush head (5) via a clamp (65).

4. The burr removal device for ejector pins according to claim 3, characterized in that: A buffer spring (66) is sleeved on the drive shaft (63), and the two ends of the buffer spring (66) elastically abut against the lower end face of the mounting shaft hole (62) and the upper end face of the chuck (65), respectively.

5. The burr removal device for ejector pins according to claim 4, characterized in that: The crossbar (61) has a waist-shaped slot (611) along its length.

6. The burr removal device for ejector pins according to claim 1, characterized in that: The base (1) has multiple guide grooves (11) on its top surface for positioning the product fixture plate (7). The multiple guide grooves (11) are parallel to each other and spaced apart.

7. The burr removal device for ejector pins according to claim 6, characterized in that: The jig plate (7) is provided with a clamping assembly (8) on the side. The clamping assembly (8) includes a screw (81) vertically disposed on the base (1), a clamping block (82) movably sleeved on the screw (81), and a nut (83) threadedly connected to the screw (81) so that the clamping block (82) clamps and fixes the jig plate (7) on the base (1).

Images