A combined test bench for chip processing

By adopting a combined design of refrigeration components and a cooling network in the combined test bench for chip processing, the temperature increase problem caused by long-term vibration testing is solved, and the effective cooling of the transmission and the service life are extended, while improving the heat dissipation efficiency.

CN119780672BActive Publication Date: 2025-07-01天津卡乐云品网络科技有限公司
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Patent Information

Application Number
CN202411915488.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-12-24
Publication Date
2025-07-01
Estimated Expiration
2044-12-24

AI Technical Summary

Technical Problem

After a long period of vibration test, the temperature of the vibration transmission of the vibration combination test bench may increase, affecting the service life of the transmission.

Method used

A combined test bench for chip processing is designed. The cooling air is transported to the exhaust port of the vibrating assembly through a refrigerator to cool down in real time, and the cooling network is cleaned through a cleaning brush to avoid accumulation of dust and cause heat dissipation blockage.

Benefits of technology

It effectively reduces the temperature increase of the transmission during long-term use, extends the service life of the transmission, and improves the heat dissipation efficiency, ensuring the stable operation of the test bench in high-frequency vibration test.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention discloses a combined test bench for chip processing, belonging to the technical field of chip test benches, including support columns. The top ends of the support columns are fixedly connected with mounting platforms. A partition is fixedly connected to the side wall of the mounting platform. Both the mounting platform and the partition are in a cubic shape, and the support columns are in a square column shape. A mounting plate is fixedly connected to the top surface of the mounting platform, and the mounting plate is in a square plate shape; in the present invention, by providing a vibration assembly, with this design, the vibration table is reciprocally moved by the first electric push rod to achieve the purpose of vibrating the chip. Then, the cold air is blown towards the first electric push rod through the refrigeration pipe and the exhaust port to cool down the first electric push rod, avoiding the influence of the temperature rise of the first electric push rod on its service life. Moreover, the heat dissipation net is cleaned by the cleaning brush to prevent the accumulation of some dust on the heat dissipation net, which may cause the blockage of the heat dissipation net and affect the dissipation of the temperature of the first electric push rod.
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Description

Technical Field

[0001] The present invention belongs to the technical field of chip test benches, and particularly relates to a combined test bench for chip processing. Background Art

[0002] A chip is a way to miniaturize a circuit including semiconductor devices as well as passive components, etc., and is often manufactured on the surface of a semiconductor wafer. When processing a chip, a combined test bench for testing vibration is usually required to test the operation of the chip after being subjected to vibration.

[0003] Nowadays, through the combined test bench for testing vibration, it is convenient to simulate the operation of the chip after vibration, improve the chip, and improve the test efficiency. However, after a long-term vibration test, the temperature of the transmission of the vibration combined test bench may rise, affecting the service life of the transmission. To solve the above problems, a combined test bench for chip processing with a cooling function is thus needed. Summary of the Invention

[0004] The purpose of the present invention is to propose a combined test bench for chip processing to solve the problem that the temperature of the transmission of the vibration combined test bench may rise after a long-term vibration test, affecting the service life of the transmission.

[0005] To achieve the above purpose, the present invention adopts the following technical solution: A combined test bench for chip processing, including support columns, the top ends of the support columns are fixedly connected with two mounting platforms, the two mounting platforms are fixedly connected by a partition board, both the mounting platform and the partition board are cube-shaped, the support columns are square-column-shaped, on the top surface of each mounting platform at the rear position, there is fixedly connected a mounting plate, a lubricating component is arranged on the mounting plate, the mounting plate is square-plate-shaped, a sliding hole is penetrated through the mounting plate, fixing holes are penetrated through the mounting plate at the left and right positions of the sliding hole, on the top surface of each mounting platform, there is arranged a vibration component, and a fixing component is arranged on the vibration component;

[0006] The vibration component includes a protective shell and a vibration table, the vibration table is located on the top surface of the mounting platform, the protective shell is cylindrical, the front end of the protective shell is fixedly connected with a fixing ring, the fixing ring is circular-ring-shaped, the front end side wall of the fixing ring is fixedly connected with the rear end side wall of the mounting plate, a refrigerating component is arranged on the fixing ring, a plurality of heat dissipation holes are uniformly arranged on the side wall of the protective shell along the circumferential direction, a heat dissipation net is fixedly connected in the heat dissipation holes, and a first electric push rod is arranged inside the protective shell;

[0007] A connecting shaft is fixedly connected to the front end of the output shaft of the first electric push rod. The connecting shaft is cylindrical. The front end of the connecting shaft passes through the fixed block and is fixedly connected to the rear side wall of the vibrating table. The vibrating table is cube-shaped. A chute is formed by concave inward in the horizontal direction at the rear part of the top surface of the vibrating table. A sliding groove is formed by concave inward longitudinally on the bottom surface of the vibrating table. A sliding plate is slidably connected in the sliding groove, and the sliding plate is fixedly arranged longitudinally on the mounting table. The vibrating table is slidably connected to the mounting table in the front and rear directions through the cooperation of the sliding plate and the sliding groove.

[0008] As a preferred embodiment of the present invention, the refrigeration component includes a first refrigeration part, a second refrigeration part and a connecting part. The two ends of the connecting part are respectively fixedly connected to the tops of the first refrigeration part and the second refrigeration part. The two ends of the connecting part are respectively communicated with the first refrigeration part and the second refrigeration part, and the first refrigeration part, the connecting part and the second refrigeration part form an inverted U-shaped structure.

[0009] The bottom ends of the first refrigeration part and the second refrigeration part respectively pass through the first positioning hole and the second positioning hole on the upper side wall of the fixed ring and are fixedly connected to the inner side wall of the fixed ring. A connecting pipe is fixedly connected to the top side wall of the connecting part. The connecting pipe is circular tubular. The connecting pipe is communicated with the connecting part. A plurality of exhaust ports are penetrated and arranged on the front side walls of the first refrigeration part and the second refrigeration part. The exhaust ports are communicated with the connecting pipe.

[0010] As a preferred embodiment of the present invention, it further includes a connecting plate. The connecting plate is strip-shaped. The connecting plate is slidably connected in the sliding hole. A fixing ring is respectively fixedly connected to the left side wall and the right side wall at the rear end of the connecting plate. The fixing ring is circular ring-shaped. The fixing ring is sleeved on the protective shell. A cleaning brush is fixedly connected in the inner side wall of the fixing ring.

[0011] As a preferred embodiment of the present invention, the fixing component includes a motor. The right end of the motor is fixedly connected to the left side wall of the vibrating table. The output shaft of the motor passes through the positioning hole on the vibrating table. The positioning hole is communicated with the chute. A bidirectional threaded rod is fixedly connected to the right end of the output shaft of the motor. The bidirectional threaded rod is located in the chute. The shape of the bidirectional threaded rod is cylindrical.

[0012] As a preferred embodiment of the present invention, a moving block is threadedly connected to the outer sidewall of the bidirectional threaded rod. A connecting block is fixedly connected to the top of the moving block. The connecting block is in a strip shape. Cleaning blocks are fixedly connected to the front side and the rear side of the connecting block on the moving block. The top ends of the connecting block and the cleaning blocks penetrate through the sliding groove and extend upward, and the sidewall of the cleaning block is slidably connected to the inner wall of the sliding groove. An installation frame is fixedly connected to the top of the connecting block.

[0013] As a preferred embodiment of the present invention, the installation frame includes a first installation plate and a second installation plate. The lower end of the first installation plate is fixedly arranged on the connecting block. The rear end of the second installation plate is fixedly arranged on the upper end of the first installation plate. A positioning hole is arranged on the second installation plate. The positioning hole is in a circular hole shape. A rubber ring is fixedly connected to the inner sidewall of the positioning hole. The rubber ring is in a circular ring shape. A second electric push rod is arranged on the top of the second installation plate. The output shaft of the second electric push rod penetrates through the rubber ring and extends downward.

[0014] As a preferred embodiment of the present invention, a pressing plate is fixedly connected to the lower end of the output shaft of the second electric push rod. The pressing plate is located below the second installation plate. A card slot is arranged on the bottom surface of the pressing plate. A rubber block is arranged in the card slot of the pressing plate. The rubber block is in a cube shape. A fixed rubber is fixedly connected to the bottom surface of the rubber block. Threaded holes are arranged at both the front and rear ends of the pressing plate. A threaded nail is threadedly connected in the threaded hole. One end of the threaded nail is fixedly connected to a fixing block. A dust removal brush is fixedly connected to the sidewall of the fixing block. The fixing block is in a cylindrical shape.

[0015] As a preferred embodiment of the present invention, a first telescopic tube is fixedly connected to the left side of the moving block. The left end of the first telescopic tube is fixedly connected to the left sidewall of the sliding groove on the vibration table. The left end of the bidirectional threaded rod penetrates through the first telescopic tube and is fixedly connected to the right end of the output shaft of the motor. A second telescopic tube is fixedly connected to the right side of the moving block. The right end of the bidirectional threaded rod passes through the second telescopic tube and extends to the right.

[0016] As a preferred embodiment of the present invention, the lubricating assembly includes a telescopic cylinder. The bottom end of the telescopic cylinder is fixedly connected to a positioning frame. The bottom end of the positioning frame is fixedly connected to an extrusion shell. The extrusion shell is in a cube shape. The lower end of the output shaft of the telescopic cylinder is fixedly connected to a telescopic shaft. The telescopic shaft is in a cylindrical shape. The lower end of the telescopic shaft penetrates through the through hole on the positioning frame and extends downward. A pressing plate is fixedly connected to the bottom end of the telescopic shaft. The pressing plate is in a cuboid shape. Rubber frames are fixedly connected to the outer sidewalls around the pressing plate. The pressing plate and the rubber frames are both located inside the extrusion shell.

[0017] As a preferred embodiment of the present invention, a partition board is fixedly connected inside the extrusion shell. The partition board is a cuboid. The rubber frame is located on one side of the partition board. An oil outlet hole is provided at the bottom of the partition board. The oil outlet hole is in the shape of a square hole. A telescopic hole is provided on the top surface of the extrusion shell. The telescopic hole is in the shape of a circular hole. The bottom end of the telescopic shaft penetrates through the telescopic hole and extends downward;

[0018] An oil inlet pipe is provided on the left side wall of the extrusion shell. A sealing cover is provided at the left end of the oil inlet pipe. An oil delivery pipe is fixedly connected to the bottom surface of the extrusion shell. An oil inlet hole is provided at the top end of the oil delivery pipe. A lubricating cotton is fixedly connected to the bottom end of the oil delivery pipe. The lubricating cotton is fixedly arranged on the inner side wall of the fixed hole.

[0019] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are:

[0020] 1. In the present invention, by providing a vibration assembly, during use, the gas delivery pipe of the cooler is connected to the connecting pipe in the refrigeration assembly. Then, the chip to be tested is placed on the vibration table and fixed by the pressing plate and the fixing rubber. At this time, the first electric push rod is started. The first electric push rod drives the connecting shaft, and then the connecting shaft drives the vibration table, so that the vibration table makes a reciprocating movement back and forth through the cooperation of the sliding groove and the sliding plate, so as to achieve the purpose of vibrating the chip and testing the vibration performance of the chip. At the same time of the test, the cooler delivers cold air into the connecting pipe, and the cold air is delivered into the first refrigeration part and the second refrigeration part through the connecting part, and then is discharged outward through a plurality of exhaust ports on the front side walls of the first refrigeration part and the second refrigeration part and blows towards the first electric push rod to cool the first electric push rod in real time, avoiding the influence of the temperature rise of the first electric push rod during long-term use on the service life of the first electric push rod. While the vibration table makes a reciprocating movement back and forth, it drives the connecting plate to make a reciprocating movement back and forth in the sliding hole. The connecting plate drives the fixing ring, and thus drives the cleaning brush. The cleaning brush cleans the heat dissipation net, avoiding the accumulation of some dust on the heat dissipation net after long-term use, resulting in the blockage of the heat dissipation net and affecting the heat dissipation of the first electric push rod. Through this design, the first electric push rod is used to make the vibration table reciprocate to achieve the purpose of vibrating the chip. Then, the refrigeration assembly and the exhaust port are used to blow cold air towards the first electric push rod to cool the first electric push rod. Then, the cleaning brush is used to clean the heat dissipation net, avoiding the accumulation of some dust on the heat dissipation net, resulting in the blockage of the heat dissipation net and affecting the heat dissipation of the first electric push rod.

[0021] 2. In the present invention, by providing a fixing component, after placing the chip on the vibration table, the motor is started. The motor drives the bidirectional threaded rod, and the bidirectional threaded rod drives the moving block and the connecting block, thereby driving the mounting bracket and causing the mounting bracket to move. Then, according to the size of the chip, the mounting bracket is moved to the position where the pressing plate and the fixing rubber can fix the chip. At this time, the second electric push rod is started, and the second electric push rod drives the pressing plate, thereby driving the fixing rubber. The chip is fixed by the fixing rubber and the pressing plate, preventing the chip from being removed from the vibration table during the vibration test and affecting the test. While the moving block moves, it drives the cleaning block, and the cleaning block cleans some impurities that may adhere in the chute and are difficult to clean, preventing the impurities from adhering in the chute and affecting the movement of the mounting bracket. Then, the first telescopic tube and the second telescopic tube are used to protect the bidirectional threaded rod, preventing impurities from adhering to the bidirectional threaded rod and affecting its normal use. By providing the rubber ring, when the output shaft of the second electric push rod expands and contracts, the dust on the output shaft of the second electric push rod is cleaned in real time, reducing some additional workload that needs to be cleaned. When the fixing rubber is damaged, the threaded nail is rotated to separate the threaded nail from the threaded hole, then the fixing rubber is removed and replaced. Then, the replaced fixing rubber is installed back in place and fixed by threading the threaded nail into the threaded hole. While the threaded nail is separated from the threaded hole, the fixing block is driven by the threaded nail, thereby driving the dust removal brush, and the inner wall of the threaded hole is cleaned by the dust removal brush to prevent some impurities accumulated in the threaded hole from being inconvenient to clean. Through this design, it is convenient to move the mounting bracket to the position where the pressing plate and the fixing rubber can fix the chip according to the size of the chip by using the bidirectional threaded rod and the moving block, improving the flexibility of use. The chip is fixed by using the second electric push rod, the pressing plate and the fixing rubber, preventing the chip from being removed from the vibration table during the vibration test and affecting the test. The first telescopic tube and the second telescopic tube are used to protect the bidirectional threaded rod, preventing impurities from adhering to the bidirectional threaded rod and affecting its normal use.

[0022] 3. In the present invention, by providing a lubricating component, when the smoothness of the connecting shaft decreases, the telescopic cylinder is started. The telescopic cylinder drives the telescopic shaft, thereby driving the pressing plate and the rubber frame. Through the pressing plate, the lubricating oil in the first cavity inside the extrusion shell is extruded, and the lubricating oil enters the bottom of the second cavity through the oil outlet hole, then enters the oil inlet hole, and then the lubricating oil is transported to the lubricating cotton through the oil delivery pipe and absorbed by the lubricating cotton, which can lubricate the connecting shaft. Thus, when lubrication is required, the connecting shaft can be automatically lubricated, saving labor. Through this design, that is, the telescopic cylinder, the pressing plate and the rubber frame are used to squeeze the lubricating oil into the lubricating cotton to lubricate the connecting shaft, which is convenient for maintenance. And when lubrication is required, the connecting shaft can be automatically lubricated, and the operation is simple, convenient and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of the three-dimensional structure of a combined test bench for chip processing provided by an embodiment of the present invention in one direction.

[0024] Figure 2 Schematic diagram of the three-dimensional structure of a combined test bench for chip processing provided by an embodiment of the present invention in another direction.

[0025] Figure 3 Schematic diagram of the exploded three-dimensional structure of the vibration assembly of a combined test bench for chip processing provided by an embodiment of the present invention.

[0026] Figure 4 Schematic diagram of the three-dimensional structure of the vibration assembly, fixing assembly, mounting plate, and lubrication assembly cooperating with each other provided by an embodiment of the present invention.

[0027] Figure 5 Schematic diagram of the enlarged three-dimensional structure of the vibration assembly in a combined test bench for chip processing provided by an embodiment of the present invention.

[0028] Figure 6 Schematic diagram of the enlarged three-dimensional structure of the sliding plate, vibration table, vibrating table, and sliding groove cooperating with each other provided by an embodiment of the present invention.

[0029] Figure 7 Exploded structure diagram of the fixing assembly provided by an embodiment of the present invention.

[0030] Figure 8 Exploded structure diagram of the mounting bracket, rubber ring, and second electric push rod body cooperating with each other provided by an embodiment of the present invention.

[0031] Figure 9 Exploded structure diagram of the pressing plate and the fixing rubber cooperating with each other in the fixing assembly provided by an embodiment of the present invention.

[0032] Figure 10 Schematic diagram of the enlarged three-dimensional structure of the moving block, connecting block, and cleaning blade cooperating with each other provided by an embodiment of the present invention.

[0033] Figure 11 Exploded structure diagram of the lubrication assembly provided by an embodiment of the present invention.

[0034] Figure 12 Schematic diagram of the three-dimensional structure of the lubricating cotton and the oil delivery pipe cooperating with each other in the lubrication assembly provided by an embodiment of the present invention.

[0035] Figure 13 Schematic diagram of the partially enlarged three-dimensional structure of the lubrication assembly provided by an embodiment of the present invention.

[0036] Figure 14An enlarged three-dimensional structural schematic diagram of the cooperation between the mounting table, vibration assembly, mounting plate, fixing assembly, and lubrication assembly provided by the embodiments of the present invention.

[0037] Figure 15 A cross-sectional structural schematic diagram of the extrusion shell provided by the embodiments of the present invention.

[0038] Legend description:

[0039] 1. Support column; 2. Mounting table; 3. Partition board; 4. Vibration assembly; 41. Protective shell; 42. Heat dissipation net; 43. First electric push rod; 44. Fixed ring; 45. Refrigeration pipe; 46. Connecting shaft; 47. Fixed ring; 48. Cleaning brush; 49. Connecting plate; 410. Vibration table; 411. Connecting pipe; 412. Exhaust port; 413. Sliding groove; 414. Slide plate; 415. Positioning hole; 5. Fixing assembly; 51. Motor; 52. First telescopic pipe; 53. Moving block; 54. Second telescopic pipe; 55. Bidirectional threaded rod; 56. Mounting frame; 561. First mounting plate; 562. Second mounting plate; 57. Positioning hole; 58. Rubber ring; 59. Second electric push rod; 510. Pressing plate; 511. Fixed rubber; 512. Rubber block; 513. Threaded hole; 514. Threaded nail; 515. Fixed block; 516. Dust removal brush; 517. Connecting block; 518. Cleaning blade; 6. Mounting plate; 7. Lubrication assembly; 71. Telescopic cylinder; 72. Telescopic shaft; 73. Extrusion plate; 74. Rubber frame; 75. Extrusion shell; 76. Oil delivery pipe; 77. Lubricating cotton; 78. Oil inlet hole; 79. Oil inlet pipe; 710. Telescopic hole; 711. Positioning frame; 712. Partition board; 713. Oil outlet hole; 714. Through hole; 8. Slide hole; 9. Slide groove; 10. Fixed hole. Detailed implementation manners

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

[0041] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0042] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "install", "connect", "couple" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] The present invention will be further described below with reference to the drawings and specific embodiments.

[0044] Please refer to Figures 1 to 15 As shown, the present invention provides a technical solution: a combined test bench for chip processing, including support columns 1. The top ends of the support columns 1 are fixedly connected with two mounting platforms 2. That is, each mounting platform 2 is supported and fixed by four support columns 1. The two mounting platforms 2 are fixedly connected by a partition plate 3. The mounting platforms 2 and the partition plate 3 are both in a cubic shape. The support columns 1 are in a square column shape. On the top surface of each mounting platform 2 at the rear position, there is a fixedly connected mounting plate 6. A lubrication assembly 7 is arranged on the mounting plate 6. The mounting plate 6 is in a square plate shape. A sliding hole 8 is penetrated through the mounting plate 6. Fixing holes 10 are penetrated through the mounting plate 6 at the left and right positions of the sliding hole 8. Two sets of vibration assemblies 4 are arranged on the top surface of each mounting platform 2. A fixing assembly 5 is arranged on the vibration assembly 4.

[0045] The vibration assembly 4 includes a protective housing 41 and a vibration table 410. The vibration table 410 is located on the top surface of the mounting table 2 and in front of the mounting plate 6. The protective housing 41 is cylindrical. A fixing ring 44 is fixedly connected to the front end of the protective housing 41. The fixing ring 44 is cylindrical. The front side wall of the fixing ring 44 is fixedly connected to the rear side wall of the mounting plate 6. A refrigeration unit 45 is provided on the fixing ring 44. A plurality of heat dissipation holes are evenly arranged on the side wall of the protective housing 41 along the circumferential direction. A heat dissipation net 42 is fixedly connected in each heat dissipation hole. A first electric push rod 43 is arranged inside the protective housing 41. The front end of the output shaft of the first electric push rod 43 passes through the fixing block 10 and is fixedly connected to the rear side wall of the vibration table 410. The vibration table 410 is cubic. A chute 9 is formed by concave inward along the horizontal direction at the rear part of the top surface of the vibration table 410. A sliding groove 413 is formed by concave inward along the longitudinal direction on the bottom surface of the vibration table 410. The number of the sliding grooves 413 is two. A sliding plate 414 is slidably connected in each sliding groove 413. And the sliding plate 414 is fixedly arranged along the longitudinal direction on the top surface of the mounting table 2. The vibration table 410 is slidably connected to the mounting table 2 in the front-back direction through the cooperation of the sliding plate 414 and the sliding groove 413.

[0046] The refrigeration assembly 45 includes a first refrigeration part 451, a second refrigeration part 452 and a connecting part 450. The two ends of the connecting part 450 are respectively fixedly connected to the top ends of the first refrigeration part 451 and the second refrigeration part 452. The two ends of the connecting part 450 are respectively communicated with the first refrigeration part 451 and the second refrigeration part 452. And the first refrigeration part 451, the connecting part 450 and the second refrigeration part 452 form an inverted U-shaped structure.

[0047] The bottom ends of the first refrigeration part 451 and the second refrigeration part 452 respectively penetrate through a first positioning hole 441 and a second positioning hole 442 on the upper side wall of the fixing ring 44 and are fixedly connected to the inner side wall of the fixing ring 44. A connecting pipe 411 is fixedly connected to the top side wall of the connecting part 450. The connecting pipe 411 is circular tubular. The connecting pipe 411 is communicated with the connecting part 450. A plurality of exhaust ports 412 are penetrated and arranged on the front side walls of the first refrigeration part 451 and the second refrigeration part 452. The exhaust ports 412 are communicated with the connecting pipe 411.

[0048] A combined test bench for chip processing provided by an embodiment of the present invention further includes a connecting plate 49. The connecting plate 49 is strip-shaped and is slidably connected in the sliding hole 8. A fixing ring 47 is fixedly connected to the left and right side walls of the rear end of the connecting plate 49 respectively. The fixing ring 47 is circular, and the fixing ring 47 is sleeved on the protective shell 41. A cleaning brush 48 is fixedly connected to the inner side wall of the fixing ring 47, and the end of the cleaning brush 48 abuts against the outer side wall of the protective shell 41.

[0049] When the combined test bench for chip processing provided by an embodiment of the present invention is in use, the air delivery pipe of the cooler is connected to the connecting pipe 411 in the refrigeration assembly 45. Then, the chip to be tested is placed on the vibrating table 410 and fixed by the pressing plate 510 and the fixing rubber 511. At this time, the first electric push rod 43 is started. The connecting shaft 46 is driven by the first electric push rod 43, and then the vibrating table 410 is driven by the connecting shaft 46, so that the vibrating table 410 moves back and forth through the cooperation of the sliding groove 413 and the sliding plate 414 to achieve the purpose of vibrating the chip and test the vibration performance of the chip. At the same time of the test, the cooler delivers cold air into the connecting pipe 411 in the refrigeration assembly 45, and is delivered into the first refrigeration part 451 and the second refrigeration part 452 through the connecting part 450, and then is discharged outward through a plurality of exhaust ports 412 on the front side walls of the first refrigeration part 451 and the second refrigeration part 452 and blows towards the first electric push rod 43, so as to achieve the purpose of cooling the first electric push rod 43 in real time and avoid the influence of the temperature rise of the first electric push rod 43 during long-term use on the service life of the first electric push rod 43; in addition, while the vibrating table 410 moves back and forth, it drives the connecting plate 49 to move back and forth in the sliding hole 8, drives the fixing ring 47 through the connecting plate 49, and thus drives the cleaning brush 48 to clean the heat dissipation net 42 through the cleaning brush 48, avoiding the accumulation of some dust on the heat dissipation net 42 after long-term use, resulting in the blockage of the heat dissipation net 42 and affecting the heat dissipation of the first electric push rod 43. Therefore, the heat dissipation efficiency can be greatly improved.

[0050] A combined test bench for chip processing provided by an embodiment of the present invention, the fixing component 5 includes a motor 51, the right end of the motor 51 is fixedly connected to the left side wall of the vibrating table 410, the output shaft of the motor 51 passes through the positioning hole 415 on the vibrating table 410, the positioning hole 415 communicates with the sliding groove 9, the right end of the output shaft of the motor 51 is fixedly connected to a bidirectional threaded rod 55, the bidirectional threaded rod 55 is located in the sliding groove 9, and the bidirectional threaded rod 55 is rotatably connected to the sliding groove 9, the bidirectional threaded rod 55 is cylindrical, a moving block 53 is threadedly connected to the outer side wall of the bidirectional threaded rod 55, an internal threaded hole is provided in the moving block 53, the moving block 53 is sleeved on the bidirectional threaded rod 55 through the above internal threaded hole, a connecting block 517 is fixedly connected to the top of the moving block 53, the connecting block 517 is strip-shaped, cleaning blocks 518 are fixedly connected to the front side and the rear side of the moving block 53 respectively and located on the connecting block 517, the top ends of the connecting block 517 and the cleaning blocks 518 pass through the sliding groove 9 and extend upward, and the side wall of the cleaning block 518 is slidably connected to the side wall of the sliding groove 9, an installation frame 56 is fixedly connected to the top of the connecting block 517.

[0051] A combined test bench for chip processing provided by an embodiment of the present invention, the installation frame 56 includes a first installation plate 561 and a second installation plate 562, the lower end of the first installation plate 561 is fixedly arranged on the connecting block 517, the rear end of the second installation plate 562 is fixedly arranged on the upper end of the first installation plate 561, a positioning hole 57 is provided on the second installation plate 562, the positioning hole 57 is circular, a rubber ring 58 is fixedly connected to the inner side wall of the positioning hole 57, the rubber ring 58 is circular, a second electric push rod 59 is arranged on the top of the second installation plate 562, and the output shaft of the second electric push rod 59 passes through the rubber ring 58 and extends downward.

[0052] A combined test bench for chip processing provided by an embodiment of the present invention. A pressing plate 510 is fixedly connected to the lower end of the output shaft of the second electric push rod 59. The pressing plate 510 is located below the second mounting plate 59. A card slot is provided on the bottom surface of the pressing plate 510. A rubber block 512 is provided in the card slot of the pressing plate 510. The rubber block 512 is in a cubic shape, and a connecting through hole is provided in the rubber block 512. A fixing rubber 511 is fixedly connected to the bottom surface of the rubber block 512. Threaded holes 513 are provided at both the front and rear ends of the pressing plate 510, and both of the two threaded holes 513 correspond to and communicate with the connecting through hole. A threaded nail 514 is threadedly connected in the threaded hole 513 and the connecting hole through hole. One end of the threaded nail 514 is fixedly connected to a fixing block 515. A dust cleaning brush 516 is fixedly connected to the side wall of the fixing block 515. The fixing block 515 is in a cylindrical shape, that is, a fixing block 515 is fixedly provided by the rear end of the threaded nail 514 extending backward, and a dust cleaning brush 516 is provided on the fixing block 515.

[0053] A combined test bench for chip processing provided by an embodiment of the present invention. A first telescopic tube 52 is fixedly connected to the left side of the moving block 53. The left end of the first telescopic tube 52 is fixedly connected to the left side wall of the sliding groove 9 on the vibrating table 410. The left end of the bidirectional threaded rod 55 passes through the first telescopic tube 52 and is fixedly connected to the right end of the output shaft of the motor 51. A second telescopic tube 54 is fixedly connected to the right side of the moving block 53. The right end of the bidirectional threaded rod 55 passes through the second telescopic tube 54 and extends to the right.

[0054] A combined test bench for chip processing provided by an embodiment of the present invention. After placing the chip on the vibrating table 410, start the motor 51. Drive the bidirectional threaded rod 55 through the motor 51, drive the moving block 53 and the connecting block 517 through the bidirectional threaded rod 55, thereby driving the mounting frame 56 and causing the mounting frame 56 to move. Then, move the mounting frame 56 to a position where the pressing plate 510 and the fixing rubber 511 can fix the chip according to the specification size of the chip. At this time, start the second electric push rod 59, drive the pressing plate 510 through the second electric push rod 59, thereby driving the fixing rubber 511, and fix the chip through the fixing rubber 511 and the pressing plate 510 to prevent the chip from being moved out of the vibrating table 410 during the vibration test, affecting the test. In addition, while the moving block 53 is moving, drive the cleaning block 518, and clean some difficult-to-clean impurities that may adhere in the sliding groove 9 through the cleaning block 518 to prevent the impurities from adhering in the sliding groove 9 and affecting the movement of the mounting frame 56. Then, use the first telescopic tube 52 and the second telescopic tube 54 to protect the bidirectional threaded rod 55 to prevent impurities from adhering to the bidirectional threaded rod 55 and affecting the normal use of the bidirectional threaded rod 55.

[0055] A combined test bench for chip processing provided by an embodiment of the present invention. Through a rubber ring 58 arranged on the inner side wall of the positioning hole 57, when the output shaft of the second electric push rod 59 expands and contracts, dust on the output shaft of the second electric push rod 59 is cleaned, reducing some of the workload that needs to be cleaned. When the fixing rubber 511 is damaged, rotate the threaded nail 514 to separate the threaded nail 514 from the threaded hole 513, then remove the fixing rubber 511 and replace it. Then install the replaced fixing rubber 511 back in place and fix it through the threaded connection between the threaded nail 514 and the threaded hole 513. While the threaded nail 514 is separated from the threaded hole 513, the fixing block 515 is driven by the threaded nail 514, thereby driving the dust removal brush 516. The inner wall of the threaded hole 513 is cleaned by the dust removal brush 516 to prevent some impurities from accumulating in the threaded hole 513 and being inconvenient to clean.

[0056] A combined test bench for chip processing provided by an embodiment of the present invention. The lubricating component 7 includes a telescopic cylinder 71. The bottom end of the telescopic cylinder 71 is fixedly connected with a positioning frame 711. The bottom end of the positioning frame 711 is fixedly connected with an extrusion shell 75. The extrusion shell 75 is in a cube shape. The lower end of the output shaft of the telescopic cylinder 71 is fixedly connected with a telescopic shaft 72. The telescopic shaft 72 is in a cylindrical shape. The lower end of the telescopic shaft 72 penetrates through the through hole 714 of the positioning frame 711 and extends downward. The bottom end of the telescopic shaft 72 is fixedly connected with an extrusion plate 73. The extrusion plate 73 is a cuboid. Rubber frames 74 are fixedly connected to the outer side walls around the extrusion plate 73. The extrusion plate 73 and the rubber frames 74 are both located inside the extrusion shell 75.

[0057] A combined test bench for chip processing provided by an embodiment of the present invention. Inside the extrusion shell 75, a partition board 712 is fixedly connected. The partition board 712 is a cuboid. The partition board 712 divides the cavity of the extrusion shell 75 into a first cavity 751 and a second cavity 752. The rubber frame 74 is located on one side of the partition board 712, that is, the rubber frame 74 is located inside the first cavity. The extrusion plate 73 is sealed with the inner side wall of the extrusion shell 75 and the side wall of the partition board 712 through the rubber frame 74, that is, the extrusion plate 73 is sealed with the inner side walls around the first cavity 751 through the rubber frame 74. At the bottom of the side wall of the partition board 712, an oil outlet hole 713 is provided. The oil outlet hole 713 is in the shape of a square hole. On the top surface of the extrusion shell 75 above the first cavity 751, a telescopic hole 710 is provided. The telescopic hole 710 is in the shape of a circular hole. The bottom end of the telescopic shaft 72 penetrates through the telescopic hole 710 and extends downward. An oil inlet pipe 79 is provided on the left side wall of the extrusion shell 75. The oil inlet pipe 79 is communicated with the first cavity 751. Lubricating oil is conveyed into the first cavity 751 through the oil inlet pipe 79. A cover is provided at the left end of the oil inlet pipe 79. On the bottom surface of the extrusion shell 75 where the second cavity 752 is located, an oil delivery pipe 76 is fixedly connected. An oil inlet hole 78 is provided at the top end of the oil delivery pipe 76, and the oil inlet hole 78 is communicated with the second cavity 752. The bottom end of the oil delivery pipe 76 is fixedly connected with a lubricating cotton 77. The lubricating cotton 77 is fixedly arranged on the inner side wall of the fixing hole 10.

[0058] A combined test bench for chip processing provided by an embodiment of the present invention. When the smoothness of the connecting shaft 46 decreases, the telescopic cylinder 71 is started. The telescopic cylinder 71 drives the telescopic shaft 72, thereby driving the extrusion plate 73 and the rubber frame 74. Through the extrusion plate 73, the lubricating oil in the first cavity 751, that is, between the inside of the extrusion shell 75 and the partition board 712, is extruded. The lubricating oil in the first cavity 751 enters the bottom of the second cavity 752 through the oil outlet hole 713, then enters the oil inlet hole 78, and then the lubricating oil is conveyed to the lubricating cotton 77 through the oil delivery pipe 76. The lubricating oil is absorbed by the lubricating cotton 77, and then the connecting shaft 46 in the fixing hole 10 is lubricated. Thus, when lubrication is required, the connecting shaft 46 can be automatically lubricated, saving labor and having the characteristics of convenient and fast operation.

[0059] A combined test bench for chip processing provided by an embodiment of the present invention has the following working principle: When in use, connect the air delivery pipe of the cooler to the connecting pipe 411 in the refrigeration assembly 45, then place the chip to be tested on the vibrating table 410 and fix it with the pressing plate 510 and the fixing rubber 511. At this time, start the first electric push rod 43. The first electric push rod 43 drives the connecting shaft 46, and the connecting shaft 46 drives the vibrating table 410, so that the vibrating table 410 reciprocates back and forth through the cooperation of the sliding groove 413 and the sliding plate 414 to achieve the purpose of vibrating the chip and test the vibration performance of the chip. At the same time of the test, the cooler delivers cold air into the connecting pipe 411 in the refrigeration assembly 45, and it is delivered into the first refrigeration part 451 and the second refrigeration part 452 through the connecting part 450, and then is discharged outward through a plurality of exhaust ports 412 on the front side walls of the first refrigeration part 451 and the second refrigeration part 452 and blows to the first electric push rod 43 to cool the first electric push rod 43 in real time, avoiding the increase of the temperature of the first electric push rod 43 during long-term use and affecting the service life of the first electric push rod 43; In addition, when the vibrating table 410 reciprocates, it drives the connecting plate 49 to reciprocate, and the connecting plate 49 drives the fixing ring 47, thereby driving the cleaning brush 48, and the cleaning brush 48 cleans the heat dissipation net 42, avoiding the accumulation of some dust on the heat dissipation net 42 after long-term use, resulting in the blockage of the heat dissipation net 42 and affecting the heat dissipation of the first electric push rod 43, so the heat dissipation efficiency can be improved.

[0060] After placing the chip on the vibrating table 410, start the motor 51. The motor 51 drives the bidirectional threaded rod 55, and the bidirectional threaded rod 55 drives the moving block 53 and the connecting block 517, thereby driving the mounting frame 56 and making the mounting frame 56 move. Then, according to the size of the chip, move the mounting frame 56 to the position where the pressing plate 510 and the fixing rubber 511 can fix the chip. At this time, start the second electric push rod 59. The second electric push rod 59 drives the pressing plate 510, thereby driving the fixing rubber 511, and the chip is fixed by the fixing rubber 511 and the pressing plate 510 to prevent the chip from being moved out of the vibrating table 410 during the vibration test, affecting the test; In addition, when the moving block 53 moves mechanically, it drives the cleaning block 518, and the cleaning block 518 cleans some difficult-to-clean impurities that may adhere in the sliding groove 9, avoiding the adhesion of impurities in the sliding groove 9 and affecting the movement of the mounting frame 56. Then, the first telescopic tube 52 and the second telescopic tube 54 are used to protect the bidirectional threaded rod 55, avoiding the adhesion of impurities on the bidirectional threaded rod 55 and affecting the normal use of the bidirectional threaded rod 55.

[0061] Through the rubber ring 58 arranged on the inner wall of the positioning hole 57, when the output shaft of the second electric push rod 59 expands and contracts, the dust in the output shaft of the second electric push rod 59 is cleaned, reducing some of the workload that needs to be cleaned. When the fixing rubber 511 is damaged, rotate the threaded nail 514 to separate the threaded nail 514 from the threaded hole 513, then remove the fixing rubber 511 and replace it. Then, install the replaced fixing rubber 511 back in place and fix it through the threaded connection between the threaded nail 514 and the threaded hole 513. While the threaded nail 514 is separated from the threaded hole 513, the fixing block 515 is driven by the threaded nail 514, thereby driving the dust removal brush 516. The inner wall of the threaded hole 513 is cleaned by the dust removal brush 516 to prevent the accumulation of some impurities in the threaded hole 513 that are inconvenient to clean; when the smoothness of the connecting shaft 46 decreases, start the telescopic cylinder 71. The telescopic shaft 72 is driven by the telescopic cylinder 71, thereby driving the pressing plate 73 and the rubber frame 74. Through the pressing plate 73, the lubricating oil between the inside of the pressing shell 75 and the partition plate 712 is squeezed, and the lubricating oil enters the oil inlet hole 78 through the oil outlet hole 713. Then, the lubricating oil is transported to the lubricating cotton 77 through the oil delivery pipe 76. The lubricating cotton 77 absorbs the lubricating oil and lubricates the connecting shaft 46. Thus, when lubrication is required, the connecting shaft 46 can be automatically lubricated, saving labor.

[0062] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes should be covered within the protection scope of the present invention.

Claims

1. A modular test bench for chip processing, comprising a support column (1), characterized in that: The top of the support column (1) is fixedly connected to two mounting platforms (2), and the two mounting platforms (2) are fixedly connected via a partition (3). The mounting platforms (2) and the partition (3) are both in the shape of a cube, and the support column (1) is in the shape of a square column. A mounting plate (6) is fixedly connected to the top surface of each mounting platform (2) at a rear position, and a lubrication component (7) is provided on the mounting plate (6). The mounting plate (6) is in the shape of a square plate, and a sliding hole (8) is provided through the mounting plate (6). The mounting plate (6) is provided with fixing holes (10) at positions on the left and right sides of the sliding hole (8). A vibration component (4) is provided on the top surface of each mounting platform (2), and a fixing component (5) is provided on the vibration component (4); The vibration assembly (4) comprises a protective shell (41) and a vibration platform (410), wherein the vibration platform (410) is located above the mounting platform (2), the protective shell (41) is cylindrical, a fixing ring (44) is fixedly connected to the front end of the protective shell (41), the fixing ring (44) is annular, the front end side wall of the fixing ring (44) is fixedly connected to the rear end side wall of the mounting plate (6), a refrigeration assembly (45) is arranged on the fixing ring (44), a plurality of heat dissipation holes are evenly arranged on the side wall of the protective shell (41) along the circumferential direction, a heat dissipation net (42) is fixedly connected to the heat dissipation hole, and a first electric push rod (43) is arranged inside the protective shell (41); The front end of the output shaft of the first electric push rod (43) is fixedly connected to a connecting shaft (46), the connecting shaft (46) is cylindrical, the front end of the connecting shaft (46) passes through the fixed block (10) and is fixedly connected to the rear side wall of the vibration table (410), the vibration table (410) is in the shape of a cube, the rear part of the top surface of the vibration table (410) is concave in the horizontal direction to form a sliding groove (9), the bottom surface of the vibration table (410) is concave in the longitudinal direction to form a sliding groove (413), the sliding groove (413) is slidably connected to a slide plate (414), and the slide plate (414) is fixedly arranged on the mounting table (2) in the longitudinal direction, and the vibration table (410) is connected to the mounting table (2) in a front-rear sliding manner through the cooperation between the slide plate (414) and the sliding groove (413).

2. A combined test bench for chip processing according to claim 1, characterized in that: The refrigeration assembly (45) comprises a first refrigeration part (451), a second refrigeration part (452) and a connecting part (450), two ends of the connecting part (450) are respectively fixedly connected to the top ends of the first refrigeration part (451) and the second refrigeration part (452), two ends of the connecting part (450) are respectively connected to the first refrigeration part (451) and the second refrigeration part (452), and the first refrigeration part (451), the connecting part (450) and the second refrigeration part (452) form an inverted U-shaped structure; The bottom ends of the first refrigeration part (451) and the second refrigeration part (452) respectively penetrate the first positioning hole (441) and the second positioning hole (442) of the upper side wall of the fixing ring (44) and are fixedly connected to the inner side wall of the fixing ring (44); the top side wall of the connecting part (450) is fixedly connected with a connecting pipe (411); the connecting pipe (411) is in a circular tube shape; the connecting pipe (411) is connected to the connecting part (450); and a plurality of exhaust ports (412) are penetrated on the front side walls of the first refrigeration part (451) and the second refrigeration part (452); the exhaust ports (412) are connected to the connecting pipe (411).

3. The combined test bench for chip processing according to claim 1, characterized in that: It also includes a connecting plate (49), the connecting plate (49) is in the shape of an elongated strip, the connecting plate (49) is slidably connected to the sliding hole (8), the left side wall and the right side wall of the rear end of the connecting plate (49) are respectively fixedly connected to a fixing ring (47), the fixing ring (47) is in the shape of a circular ring, the fixing ring (47) is sleeved on the protective shell (41), and a cleaning brush (48) is fixedly connected to the inner side wall of the fixing ring (47).

4. The combined test bench for chip processing according to claim 3, characterized in that: The fixing assembly (5) comprises a motor (51), the right end of the motor (51) is fixedly connected to the left side wall of the vibration table (410), the output shaft of the motor (51) passes through a positioning hole (415) on the vibration table (410), the positioning hole (415) is connected to the slide groove (9), the right end of the output shaft of the motor (51) is fixedly connected to a bidirectional threaded rod (55), the bidirectional threaded rod (55) is located in the slide groove (9), and the bidirectional threaded rod (55) is cylindrical in shape.

5. The combined test bench for chip processing according to claim 4, characterized in that: A moving block (53) is threadedly connected to the outer wall of the bidirectional threaded rod (55), and a connecting block (517) is fixedly connected to the top of the moving block (53). The connecting block (517) is in the shape of an elongated strip. Cleaning blocks (518) are fixedly connected to the front and rear sides of the moving block (53) at the connecting block (517). The tops of the connecting block (517) and the cleaning block (518) pass through the slide groove (9) and extend upward, and the side wall of the cleaning block (518) is slidably connected to the inner wall of the slide groove (9). A mounting frame (56) is fixedly connected to the top of the connecting block (517).

6. The combined test bench for chip processing according to claim 5, characterized in that: The mounting frame (56) comprises a first mounting plate (561) and a second mounting plate (562), wherein the lower end of the first mounting plate (561) is fixedly arranged on the connecting block (517), and the rear end of the second mounting plate (562) is fixedly arranged on the upper end of the first mounting plate (561). A positioning hole (57) is arranged on the second mounting plate (562), and the positioning hole (57) is in the shape of a circular hole. A rubber ring (58) is fixedly connected to the inner side wall of the positioning hole (57), and the rubber ring (58) is in the shape of a circular ring. A second electric push rod (59) is arranged on the top of the second mounting plate (562), and the output shaft of the second electric push rod (59) passes through the rubber ring (58) and extends downward.

7. The combined test bench for chip processing according to claim 6, characterized in that: The lower end of the output shaft of the second electric push rod (59) is fixedly connected to a pressure plate (510), and the pressure plate (510) is located below the second mounting plate (562). A slot is provided on the bottom surface of the pressure plate (510), and a rubber block (512) is provided in the slot of the pressure plate (510). The rubber block (512) is in a cubic shape, and a fixing rubber (511) is fixedly connected to the bottom surface of the rubber block (512). Threaded holes (513) are provided at both the front and rear ends of the pressure plate (510), and a threaded nail (514) is threadedly connected in the threaded hole (513). One end of the threaded nail (514) is fixedly connected to a fixing block (515), and a dust removal brush (516) is fixedly connected to the side wall of the fixing block (515). The fixing block (515) is in a cylindrical shape.

8. The combined test bench for chip processing according to claim 7, characterized in that: The left side of the moving block (53) is fixedly connected to a first telescopic tube (52), the left end of the first telescopic tube (52) is fixedly connected to the left side wall of the slide groove (9) on the vibration table (410), the left end of the bidirectional threaded rod (55) passes through the first telescopic tube (52) and is fixedly connected to the right end of the output shaft of the motor (51), the right side of the moving block (53) is fixedly connected to a second telescopic tube (54), the right end of the bidirectional threaded rod (55) passes through the second telescopic tube (54) and extends to the right.

9. The combined test bench for chip processing according to claim 1, characterized in that: The lubrication assembly (7) comprises a telescopic cylinder (71), the bottom end of the telescopic cylinder (71) is fixedly connected to a positioning frame (711), the bottom end of the positioning frame (711) is fixedly connected to an extrusion shell (75), the extrusion shell (75) is in a cubic shape, the lower end of the output shaft of the telescopic cylinder (71) is fixedly connected to a telescopic shaft (72), the telescopic shaft (72) is in a cylindrical shape, the lower end of the telescopic shaft (72) passes through a through hole (714) on the positioning frame (711) and extends downward, the bottom end of the telescopic shaft (72) is fixedly connected to an extrusion plate (73), the extrusion plate (73) is in a rectangular parallelepiped, the outer side walls of the extrusion plate (73) are fixedly connected to a rubber frame (74), and the extrusion plate (73) and the rubber frame (74) are both located inside the extrusion shell (75).

10. The combined test bench for chip processing according to claim 9, characterized in that: The extrusion shell (75) is fixedly connected with a baffle plate (712) inside, the baffle plate (712) is a rectangular parallelepiped, the rubber frame (74) is located on one side of the baffle plate (712), the bottom of the baffle plate (712) is provided with an oil outlet hole (713), the oil outlet hole (713) is in the shape of a square hole, the top surface of the extrusion shell (75) is provided with a telescopic hole (710), the telescopic hole (710) is in the shape of a circular hole, and the bottom end of the telescopic shaft (72) passes through the telescopic hole (710) and extends downward; An oil inlet pipe (79) is provided on the left side wall of the extrusion shell (75), and a sealing cover is provided at the left end of the oil inlet pipe (79). An oil delivery pipe (76) is fixedly connected to the bottom surface of the extrusion shell (75), and an oil inlet hole (78) is provided at the top end of the oil delivery pipe (76). A lubricating cotton (77) is fixedly connected to the bottom end of the oil delivery pipe (76), and the lubricating cotton (77) is fixedly arranged on the inner side wall of the fixing hole (10).

Citation Information

Patent Citations

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