Replaceable jaw mechanical puller

Abstract

The utility model discloses a replaceable mechanical puller of clamping jaw belongs to mechanical puller technical field, including support base, the inside sliding joint of support base has the moving column, and the lower end fixedly connected with the top block of moving column, and the end of top block is thorn -like, and the surface of moving column is fixedly connected with the fixed plate one end close to support base simultaneously, the inside of support base is equipped with the stress hole, and stress hole is in the inside equal angle distribution of support base, and the inside of support base is equipped with the sliding slot through the clamping structure, and the surface of sliding slot is connected with the clamping jaw, the clamping jaw is in the inside equal angle distribution of support base. This replaceable mechanical puller of clamping jaw, through setting pressboard and push board, can replace the clamping jaw fast, greatly simplifies the replacement process, reduces the operation time, makes the clamping jaw replacement can be completed in short time, significantly improves work efficiency, improves the reliability of equipment whole simultaneously, guarantees the continuity of production.

Description

Technical Field

[0001] This utility model relates to the field of mechanical puller technology, specifically a mechanical puller with replaceable grippers. Background Technology

[0002] A mechanical puller is a tool that uses mechanical force (such as screw rotation or spring action) to safely remove or install mating parts (such as bearings, gears, and pulleys) from shafts, holes, or mechanical components. Its core principle is to overcome the friction between the part and the shaft by applying a uniform pulling force, avoiding damage to the parts that may be caused by traditional hammering or prying methods, thus improving maintenance efficiency and safety. However, when using a puller to pull bearings, it can only pull bearings of a single diameter, and the device cannot be adjusted, resulting in poor applicability and affecting the pulling efficiency of the device.

[0003] To overcome the above-mentioned defects, the prior art (Chinese patent application number 202322461698.4, application date 2023-09-11) provides a mechanical puller, including an adjusting box. Two sliders are slidably connected through the two adjusting boxes, and elastic elements are provided inside each of the two sliders. Two clamping plates are fixedly connected to the other ends of the two connecting rods, and a limiting plate is provided between each pair of adjacent clamping plates. This mechanical puller works by pressing a limiting pin, causing it to disengage from a limiting hole. Then, the slider is slid to adjust the distance between the two connecting rods, thereby adjusting the distance between the two limiting plates. The two limiting plates are positioned so that they are exactly against the front and rear ends of the left side of the bearing to be pulled. Then, the adjusting screw is rotated, causing the pusher to eject the drive shaft to be pulled. The limiting plates prevent the drive shaft and its bearing from being pushed away. The bearing remains stationary, and the pusher ejects the drive shaft, thus performing the pulling operation on the bearing of the pulling device.

[0004] On the production line, time is money. If changing the grippers of a mechanical drawing machine takes too long, the equipment will be in a prolonged downtime. Quick gripper changes can minimize downtime. For example, in the production of automotive parts, different processes may require different grippers to draw various parts. Quick gripper changes allow the equipment to quickly move to the next process, significantly increasing output per unit time. In the above-mentioned device, the inability to quickly change the grippers results in a significant reduction in the number of drawing tasks that can be completed per unit time, severely reducing production efficiency. At the same time, it affects the dimensional accuracy and surface quality of the drawn workpieces, leading to an increase in product defect rate and reduced stability of the device. Utility Model Content

[0005] The purpose of this invention is to provide a mechanical puller with replaceable grippers to solve the problems mentioned in the background art, such as the inability to quickly replace the grippers, which leads to a significant reduction in the number of pull tasks that can be completed per unit time, seriously reducing production efficiency, affecting the dimensional accuracy and surface quality of the workpiece after pull, resulting in an increase in product defect rate and reduced stability of the device.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a mechanical puller with replaceable grippers, comprising a support base, a movable column slidably connected inside the support base, a top block fixedly connected to the lower end of the movable column, and the end of the top block being spike-shaped; a fixing plate fixedly connected to one end of the movable column near the support base; force-bearing holes are provided inside the support base, and the force-bearing holes are evenly distributed inside the support base; a sliding groove is provided inside the support base through a locking structure, and grippers are connected to the surface of the sliding groove; the grippers are evenly distributed on the inner wall of the support base, and a sliding rod is fixedly connected to one end of the upper surface of the support base near the movable column, and the sliding rod is slidably connected through the fixing plate.

[0007] Preferably, one end of a buffer spring is fixedly connected to the surface of the fixing plate near the force-bearing hole, and the other end of the buffer spring is fixedly connected to the support base.

[0008] Preferably, the gripper has a connecting groove inside, and a fixing spring is fixedly connected to one end of the connecting groove.

[0009] Preferably, a sliding block is fixedly connected to the other end of the fixed spring, and the lower outer end of the sliding block is inclined, and the sliding blocks are symmetrically distributed about the center of the gripper.

[0010] Preferably, a baffle is fixedly connected to the lower outer side of the support base, and a sliding column is slidably connected inside the baffle.

[0011] Preferably, a push plate is fixedly connected to one end of the sliding column surface near the sliding groove, and the push plate is slidably disposed inside the support base, and a pressing plate is fixedly connected to one end of the sliding column surface away from the push plate.

[0012] Preferably, a limiting rod is fixedly connected to the surface of the baffle, and a pressing plate is slidably connected to the limiting rod. One end of a connecting spring is fixedly connected to the surface of the pressing plate, and the other end of the connecting spring is fixedly connected to the baffle.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the mechanical puller with replaceable grippers adopts a novel structural design, the specific details of which are as follows:

[0014] (1) The mechanical puller with replaceable grippers can quickly replace the grippers by setting the pressing plate and the pushing plate, which greatly simplifies the replacement process, reduces the operation time, and enables the gripper replacement to be completed in a short time, significantly improving work efficiency, while improving the overall reliability of the equipment and ensuring the continuity of production.

[0015] Furthermore, it reduces wear between the support and the grippers, ensuring the stability and consistency of the entire drawing process, while extending the service life of the entire equipment.

[0016] (2) The mechanical puller with replaceable grippers can quickly connect the grippers through the sliding block and fixed spring. This not only reduces the complexity of operation, but also ensures that the grippers are always in close contact with the connection part, maintains a good connection state, ensures the stability and accuracy of the pulling operation, and reduces downtime caused by equipment maintenance.

[0017] Furthermore, it ensures that the grippers are accurately installed after each replacement, avoiding equipment failures caused by improper installation, thereby improving the overall reliability of the equipment and extending its service life.

[0018] (3) The mechanical puller with replaceable grippers avoids stress concentration in a local area by setting force holes and top blocks, thereby reducing cracks and damage to the grippers caused by stress concentration, extending the service life of the grippers, and making the force on the grippers more reasonable during the pulling process, thus improving the availability of the equipment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the connection structure between the support base and the force-bearing hole of this utility model.

[0020] Figure 2 This is a schematic diagram of the connection structure between the top block and the movable column of this utility model.

[0021] Figure 3 This is a schematic diagram of the connection structure between the movable column and the fixed plate of this utility model.

[0022] Figure 4 This is a schematic diagram of the connection structure between the gripper and the sliding block of this utility model.

[0023] Figure 5 This is a schematic diagram of the connection structure between the connecting groove and the gripper of this utility model.

[0024] Figure 6 This is a schematic diagram of the connection structure between the buffer spring and the fixed plate of this utility model.

[0025] Figure 7 This is a schematic diagram of the connection structure between the limiting rod and the pressing plate of this utility model.

[0026] In the diagram: 1. Support base; 2. Force-bearing hole; 3. Moving column; 4. Top block; 5. Sliding groove; 6. Fixed plate; 7. Sliding rod; 8. Buffer spring; 9. Gripper; 10. Connecting groove; 11. Fixed spring; 12. Sliding block; 13. Baffle; 14. Sliding column; 15. Push plate; 16. Pressing plate; 17. Limiting rod; 18. Connecting spring. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1: By using the support base 1, sliding groove 5, and sliding rod 7, stress concentration in a localized area is avoided, thereby reducing the likelihood of cracks and damage to the gripper 9 due to stress concentration. Figures 1-3 As shown: It includes a support base 1, a movable column 3 is slidably connected inside the support base 1, and a top block 4 is fixedly connected to the lower end of the movable column 3. The end of the top block 4 is spiked. At the same time, a fixing plate 6 is fixedly connected to the surface of the movable column 3 near the support base 1. Force holes 2 are opened inside the support base 1 and are evenly distributed inside the support base 1. A sliding groove 5 is opened inside the support base 1 through a snap-fit ​​structure. At the same time, a claw 9 is connected to the surface of the sliding groove 5 and is evenly distributed on the inner wall of the support base 1. A sliding rod 7 is fixedly connected to the upper surface of the support base 1 near the movable column 3 and is slidably connected to the fixing plate 6.

[0029] The operator will precisely install the device on the specific surface of the workpiece to be used, ensuring a tight fit and accurate positioning between the device and the workpiece, laying a good foundation for subsequent operations. After installation, the operator connects it to the moving column 3 using a tool. Pulling the moving column 3 then causes the gripper 9 to engage with the workpiece, ensuring a smooth pulling operation and realizing the pulling operation of the workpiece. (e.g.) Figure 1 and Figure 2 As shown), when replacing the gripper 9, the operator presses the pressing plate 16 on the outside of the support base 1, causing the push plate 15 to push the sliding block 12 to slide on the surface of the connecting groove 10. This allows the gripper 9 to separate from the support base 1, enabling the operator to replace the gripper 9. (As shown) Figure 6 As shown), by using the force-bearing hole 2 and the top block 4, stress concentration in a localized area is avoided, thereby reducing the likelihood of cracks and damage to the gripper 9 due to stress concentration. Figure 2As shown, this extends the service life of the gripper 9 and makes the force on the gripper 9 during the pulling process more reasonable, thus improving the availability of the equipment.

[0030] In Example 2, unlike Example 1, the use of a buffer spring 8, a fixed spring 11, and a sliding block 12 enables quick connection of the gripper 9, reducing operational complexity. Figures 4-5 As shown: One end of a buffer spring 8 is fixedly connected to the surface of the fixed plate 6 near the force hole 2, and the other end of the buffer spring 8 is fixedly connected to a support base 1. A connecting groove 10 is provided inside the gripper 9, and one end of a fixing spring 11 is fixedly connected to the surface of the connecting groove 10. The other end of the fixing spring 11 is fixedly connected to a sliding block 12, and the lower outer end of the sliding block 12 is inclined. The sliding blocks 12 are symmetrically distributed about the center of the gripper 9.

[0031] When the operator connects the gripper 9 to the support base 1, the operator lifts the gripper 9 parallel to the inner wall of the support base 1. Then, the operator pushes the gripper 9 to connect with the support base 1. When the sliding block 12 on the outer side of the gripper 9 contacts, the support base 1 pushes the sliding block 12 to slide on the surface of the connecting groove 10 inside the gripper 9, causing the fixing spring 11 on the surface of the sliding block 12 to retract towards the inner wall of the gripper 9. (e.g., Figure 4 and Figure 5 As shown), when the sliding block 12 is parallel to the sliding groove 5, the fixing spring 11 pushes the sliding block 12 to slide on the surface of the sliding groove 5, thereby allowing the gripper 9 to connect with the support base 1. Figure 1 As shown, this not only reduces the complexity of operation, but also ensures that the gripper 9 is always in close contact with the connection part, maintaining a good connection state, ensuring the stability and accuracy of the pulling operation, and reducing downtime caused by equipment maintenance.

[0032] In Example 3, unlike Example 2, the baffle 13, sliding post 14, and limiting rod 17 enable quick replacement of the gripper 9, greatly simplifying the replacement process. Figures 6-7 As shown: A baffle 13 is fixedly connected to the lower outer side of the support base 1, and a sliding column 14 is slidably connected inside the baffle 13. A push plate 15 is fixedly connected to one end of the sliding column 14 near the sliding groove 5, and the push plate 15 is slidably disposed inside the support base 1. A pressing plate 16 is fixedly connected to one end of the sliding column 14 away from the push plate 15. A limit rod 17 is fixedly connected to the surface of the baffle 13, and the limit rod 17 is slidably connected through the pressing plate 16. One end of a connecting spring 18 is fixedly connected to the surface of the pressing plate 16, and the other end of the connecting spring 18 is fixedly connected to the baffle 13.

[0033] When replacing the gripper 9, the operator presses the pressing plate 16 on the outside of the support base 1, causing the pressing plate 16 to drive the sliding column 14 and the push plate 15 to slide inside the baffle 13, and the connecting spring 18 on the surface of the pressing plate 13 retracts towards the surface of the baffle 13 (e.g., Figure 6 and Figure 7 As shown, when the push plate 15 contacts the sliding block 12 on the outside of the gripper 9, the push plate 15 pushes the sliding block 12 to slide on the surface of the connecting groove 10. When the sliding block 12 is fully inserted into the gripper 9, the operator can then separate the gripper 9 from the support base 1 and replace the gripper 9. This greatly simplifies the replacement process, reduces operation time, and allows the replacement of the gripper 9 to be completed in a short time, significantly improving work efficiency. At the same time, it improves the overall reliability of the equipment and ensures the continuity of production.

[0034] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mechanical puller with replaceable grippers, comprising a support base (1), wherein a movable column (3) is slidably connected inside the support base (1), and a top block (4) is fixedly connected to the lower end of the movable column (3), and the end of the top block (4) is spike-shaped, and a fixing plate (6) is fixedly connected to one end of the movable column (3) near the support base (1). Its features are: The support base (1) has a force-bearing hole (2) inside, and the force-bearing holes (2) are distributed at equal angles inside the support base (1). The support base (1) has a sliding groove (5) inside through a snap-fit ​​structure, and a claw (9) is connected to the surface of the sliding groove (5). The grippers (9) are distributed at equal angles on the inner wall of the support base (1), and a sliding rod (7) is fixedly connected to one end of the upper surface of the support base (1) near the moving column (3), and the sliding rod (7) is slidably connected to the fixed plate (6).

2. The mechanical puller with replaceable grippers according to claim 1, characterized in that: The fixed plate (6) has a buffer spring (8) fixedly connected to one end of its surface near the force hole (2), and the other end of the buffer spring (8) is fixedly connected to the support base (1).

3. The mechanical puller with replaceable grippers according to claim 2, characterized in that: The gripper (9) has a connecting groove (10) inside, and a fixed spring (11) is fixedly connected to one end of the connecting groove (10).

4. A mechanical puller with replaceable grippers according to claim 3, characterized in that: The other end of the fixed spring (11) is fixedly connected to a sliding block (12), and the lower outer end of the sliding block (12) is inclined, and the sliding block (12) is symmetrically distributed about the center of the gripper (9).

5. A mechanical puller with replaceable grippers according to claim 1, characterized in that: The lower outer side of the support base (1) is fixedly connected to a baffle (13), and a sliding column (14) is slidably connected inside the baffle (13).

6. A mechanical puller with replaceable grippers according to claim 5, characterized in that: A push plate (15) is fixedly connected to one end of the sliding column (14) near the sliding groove (5), and the push plate (15) is slidably disposed inside the support base (1), and a pressing plate (16) is fixedly connected to one end of the sliding column (14) away from the push plate (15).

7. A mechanical puller with replaceable grippers according to claim 6, characterized in that: The baffle (13) is fixedly connected to a limiting rod (17), and the limiting rod (17) is slidably connected to a pressing plate (16). The pressing plate (16) is fixedly connected to one end of a connecting spring (18), and the other end of the connecting spring (18) is fixedly connected to the baffle (13).

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