A new link structure for a punch

Abstract

The application relates to a novel connecting rod structure for a punch, which comprises a punch body, a crankshaft body is rotatably arranged in the punch body, a dynamic balance connecting rod is sleeved on the outer surface of the crankshaft body, bearing inner rings are fixedly arranged on the outer periphery of the crankshaft body on the left and right sides of the dynamic balance connecting rod, bearing outer rings are rotatably connected to the outer periphery of the bearing inner rings, crankshaft connecting rods are fixedly connected to the outer surfaces of the bearing outer rings, a plurality of rolling bodies are rollingly connected to the outer surfaces of the bearing inner rings, and the rolling bodies are movably connected to the inner walls of the bearing outer rings. The crankshaft body and the crankshaft connecting rod are connected by using bearings instead of copper sleeves, the assembly process of the punch is simplified, the assembly time of the punch is reduced, and in the workpiece machining process, the bearing is not prone to deformation relative to the copper sleeve, can reduce machining deviation at any time through self-adaptive adjustment, and improves the machining precision of the workpiece.

Description

Technical Field

[0001] This application relates to the technical field of punch presses, and in particular to a novel linkage structure for punch presses. Background Technology

[0002] A punch press is a stamping press. In national production, stamping technology has become increasingly widely used because it saves materials and energy, is more efficient than traditional machining, does not require high operator skills, and can produce products that cannot be achieved by machining through the application of various molds.

[0003] Stamping production is mainly for sheet metal. Through molds, blanking, punching, forming, deep drawing, trimming, fine blanking, shaping, riveting and extrusion parts can be produced. It is widely used in various fields, such as switches and sockets, cups, cabinets, plates, computer cases, and even missiles and aircraft. Many parts can be produced by stamping presses through molds.

[0004] However, the copper bushing of the crankshaft connecting rod is easily deformed during the machining process (from round to elliptical), resulting in excessive (exceeding the upper limit of deviation) or insufficient (below the lower limit of deviation) machining dimensional deviations. Moreover, the copper bushing is fixed to the lead screw, making it difficult to eliminate left and right deviations by rotation. Therefore, it is necessary to propose a new connecting rod structure for punch presses to solve the above problems. Summary of the Invention

[0005] To address the problem that the copper bushing of the crankshaft connecting rod in existing punch presses is easily deformed (from round to elliptical) during processing, resulting in excessive (exceeding the upper limit of deviation) or insufficient (below the lower limit of deviation) machining dimensional deviations; and that the copper bushing is fixed to the lead screw, making it difficult to eliminate left and right deviations by rotation, this application provides a novel connecting rod structure for punch presses.

[0006] This application provides a novel connecting rod structure for a punch press, employing the following technical solution: A novel connecting rod structure for a punch press includes a punch press body, a crankshaft body rotatably mounted inside the punch press body, a dynamic balancing connecting rod sleeved on the outer surface of the crankshaft body, bearing inner rings fixedly mounted on the left and right sides of the crankshaft body, bearing outer rings rotatably connected to the outer periphery of the bearing inner rings, a crankshaft connecting rod fixedly connected to the outer surface of the bearing outer rings, and a plurality of rolling elements rollingly connected to the outer surface of the bearing inner rings, the rolling elements being movably connected to the inner wall of the bearing outer rings.

[0007] By connecting the crankshaft body and crankshaft connecting rod with bearing outer ring, bearing inner ring and rolling elements, the bearing can replace the existing technology of using copper sleeve to connect the crankshaft body and crankshaft connecting rod. This simplifies the assembly process of the punch press, reduces the assembly time of the punch press, and during the workpiece processing, the bearing is less likely to deform than the copper sleeve. It can be adaptively adjusted to reduce processing deviation at any time and improve the processing accuracy of the workpiece.

[0008] A further improvement to the technical solution of this application is that: a number of support rods are fixedly connected to the outer surface of the inner ring of the bearing, the support rods are staggered with the rolling elements, and the support rods are made of silicon nitride.

[0009] The above technical solution involves setting up several support rods, which are arranged alternately with the rolling elements. The support rods are made of silicon nitride, which has extremely high compressive strength and elastic modulus. This provides a continuous and elastic structural support for the outer and inner rings of the bearing, suppressing their elastic deformation under heavy loads, further improving the structural strength of the bearing and enhancing the performance of the punch press.

[0010] A further improvement to the technical solution of this application is that: the outer surface of the support rod is rolled with balls, and the balls are movably connected to the inner wall of the outer ring of the bearing.

[0011] By adopting the above technical solution, the support rod and the outer ring of the bearing can be separated by the ball bearing, thereby reducing the wear between the support rod and the outer ring of the bearing and extending their service life.

[0012] A further improvement of the technical solution of this application is that: retaining rings are provided on both the left and right sides of the outer ring of the bearing, and several mounting parts are fixedly installed on both the left and right sides of the inner ring of the bearing. The interior of each mounting part is connected to a limit block by a spring. Slots are provided on the upper, lower and front and rear sides of the retaining ring. The limit block is fitted into the interior of the slot. A lever is provided on the outer side of the mounting part. The lever is fixedly connected to the outer surface of the limit block.

[0013] By adopting the above technical solution, the rolling elements can be blocked by setting retaining rings on both sides of the outer ring of the bearing, reducing the entry of impurities such as metal into the space between the outer and inner rings of the bearing and affecting the movement of the rolling elements. This ensures that the bearing can operate efficiently for a long time in a clean environment. Furthermore, the retaining block can be quickly positioned by being pushed by a spring and inserted into the retaining ring. By moving the lever, the retaining block can be disengaged from the inside of the retaining ring, thus facilitating maintenance operations on the space between the outer and inner rings of the bearing.

[0014] A further improvement of the technical solution of this application is that: an inner ring sealing ring is fixedly connected to both sides inside the inner ring of the bearing, and a first sealing ring is fixedly installed on the inner side of the retaining ring. The first sealing ring is embedded in the inner ring of the bearing and tightly fits the outer surface of the inner ring sealing ring. The surfaces in contact with the inner ring sealing ring and the first sealing ring are both wavy.

[0015] By adopting the above technical solution, the sealing effect between the retaining ring and the inner ring of the bearing can be improved by setting the first sealing ring and the inner ring sealing ring, thereby further ensuring that the bearing operates efficiently for a long time in a clean environment. Furthermore, by setting their surfaces to be wavy, the contact area is increased relative to the plane, which further improves the sealing effect.

[0016] A further improvement of the technical solution of this application is that: an outer ring sealing ring is fixedly connected to both sides inside the outer ring of the bearing, and a second sealing ring is fixedly installed on the inner side of the retaining ring around the first sealing ring. The second sealing ring is embedded in the inner side of the outer ring of the bearing and tightly fits the outer surface of the outer ring sealing ring. The surfaces in contact with the outer ring sealing ring and the second sealing ring are both wavy.

[0017] By adopting the above technical solution, the sealing effect between the retaining ring and the bearing outer ring can be improved by setting an outer ring seal and a second seal, thereby further ensuring that the bearing operates efficiently in a clean environment for a long time. Furthermore, by setting their surfaces to be wavy, the contact area is increased relative to a flat surface, further improving the sealing effect.

[0018] A further improvement of the technical solution of this application is that: several locking blocks are fixedly installed on the periphery of the retaining ring, and limit components are fixedly installed on both the left and right sides of the bearing outer ring, with the locking blocks and limit components fitting together internally.

[0019] By adopting the above technical solution, the cooperation between the locking block and the limiting component increases the contact area between the retaining ring and the outer ring of the bearing by inserting the locking block into the inside of the limiting component, thereby reducing the possibility of the retaining ring deforming and separating from the outer ring of the bearing, and thus improving the installation stability of the retaining ring.

[0020] In summary, this application includes at least one of the following beneficial technical effects: 1. This application provides a novel connecting rod structure for a punch press. By setting an outer bearing ring, an inner bearing ring, and rolling elements, the crankshaft body and the crankshaft connecting rod can be connected. This realizes the use of bearings instead of the existing technology of using copper sleeves to connect the crankshaft body and the crankshaft connecting rod, which simplifies the assembly process of the punch press, reduces the assembly time of the punch press, and during the workpiece processing, the bearing is less prone to deformation than the copper sleeve. It can be adaptively adjusted to reduce processing deviations at any time, thereby improving the processing accuracy of the workpiece.

[0021] 2. This application provides a novel connecting rod structure for a punch press. By setting several support rods made of silicon nitride and arranging them alternately with the rolling elements, a continuous and elastic structural support can be provided for the outer ring and inner ring of the bearing to suppress their elastic deformation under heavy load, thereby further improving the structural strength of the bearing and improving the performance of the punch press.

[0022] 3. This application provides a novel connecting rod structure for a punch press. By setting retaining rings, inner ring seals, outer ring seals, a first seal, and a second seal on both sides of the outer ring of the bearing, the rolling elements can be sealed and shielded, thereby reducing the entry of impurities such as metals between the outer ring and inner ring of the bearing and affecting the movement of the rolling elements. This ensures that the bearing operates efficiently in a clean environment for a long time, thereby further improving the machining accuracy of the workpiece. Attached Figure Description

[0023] Figure 1 This is a perspective view of this application; Figure 2 This is a partial structural schematic diagram of the main body of the punch press in this application; Figure 3 This is a schematic diagram of the first partial structure of the bearing outer ring of this application; Figure 4 This is a partial structural diagram of the bearing outer ring cross-section of this application; Figure 5 This is a schematic diagram of the second partial structure of the bearing outer ring of this application; Figure 6 This is a partial structural diagram of the retaining ring of this application; Figure 7 This is a front view partial structural schematic diagram of the bearing outer ring of this application.

[0024] Explanation of reference numerals in the attached drawings: 1. Punch press body; 2. Crankshaft body; 3. Crankshaft connecting rod; 4. Dynamic balancing connecting rod; 5. Bearing outer ring; 6. Bearing inner ring; 7. Retaining ring; 8. Rolling element; 9. Support rod; 10. Ball; 11. Mounting component; 12. Limiting component; 13. Inner ring seal; 14. Outer ring seal; 15. Locking block; 16. First sealing ring; 17. Second sealing ring; 18. Limiting block; 19. Spring; 20. Altering block. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0026] Example 1 See Figure 2 , Figure 3 and Figure 4This application provides a novel connecting rod structure for a punch press, including a punch press body 1. A crankshaft body 2 is rotatably mounted inside the punch press body 1. A dynamic balancing connecting rod 4 is sleeved on the outer surface of the crankshaft body 2. Bearing inner rings 6 are fixedly mounted on the outer periphery of the crankshaft body 2 on both sides of the dynamic balancing connecting rod 4. A bearing outer ring 5 is rotatably connected to the outer periphery of the bearing inner ring 6. A crankshaft connecting rod 3 is fixedly connected to the outer surface of the bearing outer ring 5. A plurality of rolling elements 8 are movably connected to the outer surface of the bearing inner ring 6 and the rolling elements 8 are movably connected to the inner wall of the bearing outer ring 5.

[0027] In this embodiment, the crankshaft body 2 and crankshaft connecting rod 3 are connected by setting the outer bearing ring 5, the inner bearing ring 6 and the rolling element 8. The bearing can replace the copper sleeve used in the prior art to connect the crankshaft body 2 and crankshaft connecting rod 3, which simplifies the assembly process of the punch press, reduces the assembly time of the punch press, and the bearing is less likely to deform relative to the copper sleeve during the workpiece processing. The bearing can be adaptively adjusted to reduce the processing deviation at any time and improve the processing accuracy of the workpiece.

[0028] Example 2 See Figure 2 , Figure 3 and Figure 4 Based on Embodiment 1, this application provides a technical solution: preferably, a plurality of support rods 9 are fixedly connected to the outer surface of the inner ring 6 of the bearing, the support rods 9 and the rolling elements 8 are arranged alternately, and the material of the support rods 9 is silicon nitride; the outer surface of the support rods 9 is rolledly connected to balls 10, and the balls 10 are movably connected to the inner wall of the outer ring 5 of the bearing.

[0029] In this embodiment, by setting a plurality of support rods 9 and arranging them alternately with the rolling elements 8, and by using silicon nitride as the material of the support rods 9, which has extremely high compressive strength and elastic modulus, a continuous and elastic structural support can be provided for the outer ring 5 and the inner ring 6 of the bearing, so as to suppress their elastic deformation under heavy load, thereby further improving the structural strength of the bearing and improving the performance of the punch press; and by setting the balls 10, the support rods 9 can be separated from the outer ring 5 of the bearing, while reducing the wear between the support rods 9 and the outer ring 5 of the bearing and extending their service life.

[0030] Example 3 See Figure 3 , Figure 5 , Figure 6 and Figure 7Based on Embodiment 2, this application provides a technical solution: Preferably, retaining rings 7 are provided on both the left and right sides of the outer ring 5 of the bearing, and several mounting parts 11 are fixedly installed on both the left and right sides of the inner ring 6 of the bearing. Each mounting part 11 has a limiting block 18 slidably connected to its interior via a spring 19. Slots are provided on the upper, lower, front, and rear sides of the retaining ring 7, and the limiting block 18 fits into the interior of the slot. A lever 20 is provided on the outer side of the mounting part 11, and the lever 20 is fixedly connected to the outer surface of the limiting block 18. Inner ring sealing rings 13 are fixedly connected to both sides of the inner ring 6 of the bearing, and a first sealing ring 16 is fixedly installed on the inner side of the retaining ring 7. The first sealing ring 16 and the inner ring 6 of the bearing... The inner ring 14 is fixedly connected to the outer side of the inner ring seal 13. The inner ring seal 13 and the first seal 16 have wavy surfaces in contact. The outer ring 14 is fixedly connected to both sides of the inner ring 5. The second seal 17 is fixedly installed on the inner side of the retaining ring 7 around the first seal 16. The second seal 17 is fixedly connected to the inner side of the outer ring 5 and is tightly fitted to the outer side of the outer ring seal 14. The outer ring seal 14 and the second seal 17 have wavy surfaces in contact. Several locking blocks 15 are fixedly installed around the retaining ring 7. Limiting members 12 are fixedly installed on both the left and right sides of the outer ring 5. The locking blocks 15 are fitted into the inner side of the limiting members 12.

[0031] In this embodiment, by providing retaining rings 7 on both sides of the outer ring 5 of the bearing, the rolling elements 8 can be shielded, reducing the entry of impurities such as metal into the space between the outer ring 5 and the inner ring 6 of the bearing, thus affecting the movement of the rolling elements 8 and ensuring long-term efficient operation of the bearing in a clean environment. Furthermore, the spring 19 pushes the limiting block 18, causing it to insert into the interior of the retaining ring 7, which quickly limits the retaining ring 7. By moving the lever 20, the limiting block 18 can be disengaged from the interior of the retaining ring 7, facilitating maintenance operations on the interior space between the outer ring 5 and the inner ring 6 of the bearing. The provision of the first sealing ring 16 and the inner ring sealing ring 13 improves the sealing effect between the retaining ring 7 and the inner ring 6 of the bearing, further ensuring long-term efficient operation of the bearing in a clean environment. Furthermore, by setting their surfaces in a wavy shape, the contact area is increased relative to a flat surface, further improving the sealing effect; by setting the outer ring sealing ring 14 and the second sealing ring 17, the sealing effect between the retaining ring 7 and the bearing outer ring 5 can be improved, thereby further ensuring the bearing operates efficiently in a clean environment for a long time, and by setting their surfaces in a wavy shape, the contact area is increased relative to a flat surface, further improving the sealing effect; through the mutual cooperation between the locking block 15 and the limiting member 12, wherein by inserting the locking block 15 into the interior of the limiting member 12, the contact area between the retaining ring 7 and the bearing outer ring 5 can be increased, reducing the possibility of the retaining ring 7 deforming and separating from the bearing outer ring 5, thereby improving the installation stability of the retaining ring 7.

[0032] The working principle of this new connecting rod structure for punch presses is explained in detail below.

[0033] like Figures 1-7 As shown, after the inner ring 6 and outer ring 5 of the bearing are installed between the crankshaft connecting rod 3 and the crankshaft body 2, the locking block 15 is inserted into the limiting member 12 by moving the lever 20, so that the retaining ring 7 is in contact with the surface of the outer ring 5 and the inner ring 6 of the bearing. At the same time, the inner ring sealing ring 13 and the first sealing ring 16, as well as the outer ring sealing ring 14 and the second sealing ring 17 are tightly fitted to seal and protect the rolling element 8. Then, the lever 20 is released, so that the spring 19 automatically pushes the limiting block 18 to insert it into the interior of the retaining ring 7, thereby quickly limiting the retaining ring 7 and ensuring that the bearing operates efficiently for a long time in a clean environment. By moving the lever 20, the limiting block 18 is disengaged from the interior of the retaining ring 7, and the retaining ring 7 is removed, which facilitates maintenance operations on the interior between the outer ring 5 and the inner ring 6 of the bearing.

[0034] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A novel linkage structure for a punch press, comprising a punch press body (1), characterized in that: The punch press body (1) is rotatably mounted with a crankshaft body (2). A dynamic balancing connecting rod (4) is sleeved on the outer surface of the crankshaft body (2). Bearing inner rings (6) are fixedly mounted on the outer periphery of the crankshaft body (2) on both sides of the dynamic balancing connecting rod (4). A bearing outer ring (5) is rotatably connected to the outer periphery of the bearing inner ring (6). A crankshaft connecting rod (3) is fixedly connected to the outer surface of the bearing outer ring (5). A plurality of rolling elements (8) are movably connected to the inner wall of the bearing outer ring (5).

2. The novel connecting rod structure for a punch press according to claim 1, characterized in that: A number of support rods (9) are fixedly connected to the outer surface of the inner ring (6) of the bearing. The support rods (9) are staggered with the rolling element (8). The support rods (9) are made of silicon nitride.

3. A novel connecting rod structure for a punch press according to claim 2, characterized in that: The outer surface of the support rod (9) is connected to a ball bearing (10), and the ball bearing (10) is movably connected to the inner wall of the outer ring (5) of the bearing.

4. A novel connecting rod structure for a punch press according to claim 3, characterized in that: The outer ring (5) of the bearing is provided with retaining rings (7) on both the left and right sides. The inner ring (6) of the bearing is fixedly installed with several mounting parts (11) on both the left and right sides. The interior of each mounting part (11) is slidably connected to a limiting block (18) by a spring (19). The retaining ring (7) is provided with slots on the upper, lower and front and rear sides. The limiting block (18) is fitted into the interior of the slot. The mounting part (11) is provided with a lever (20) on the outside. The lever (20) is fixedly connected to the outer surface of the limiting block (18).

5. A novel connecting rod structure for a punch press according to claim 4, characterized in that: The inner ring (6) of the bearing is fixedly connected to the two sides of the inner ring (6), and the first sealing ring (16) is fixedly installed on the inner side of the retaining ring (7). The first sealing ring (16) is embedded in the inner ring (6) of the bearing and closely fits the outer surface of the inner ring sealing ring (13). The surfaces of the inner ring sealing ring (13) and the first sealing ring (16) in contact are both wavy.

6. A novel connecting rod structure for a punch press according to claim 5, characterized in that: The outer ring (5) of the bearing is fixedly connected to both sides of the inner side of the outer ring (5). The second sealing ring (17) is fixedly installed on the inner side of the retaining ring (7) around the first sealing ring (16). The second sealing ring (17) is embedded in the inner side of the outer ring (5) of the bearing and is tightly fitted to the outer surface of the outer ring sealing ring (14). The surfaces of the outer ring sealing ring (14) and the second sealing ring (17) in contact are both wavy.

7. A novel connecting rod structure for a punch press according to claim 6, characterized in that: A number of locking blocks (15) are fixedly installed on the periphery of the retaining ring (7), and limiting members (12) are fixedly installed on both the left and right sides of the bearing outer ring (5). The locking blocks (15) are fitted into the interior of the limiting members (12).

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