A cylinder and slide block coupling device for a bending machine

Abstract

The utility model relates to the technical field of bending machine oil cylinder equipment, and specifically discloses a bending machine oil cylinder and sliding block coupling device, which comprises a sliding block, symmetrical oil cylinders and a coupling assembly, the bottom of the sliding block is provided with a mounting seat with mounting holes, the end of the oil cylinder piston rod is provided with a connector with double lug plates, the coupling assembly is interference press-fitted into the mounting holes through joint bearings, the connecting pin penetrates through lug plate connecting holes and joint bearing inner rings, the joint bearing outer ring is interference fitted with the mounting holes, and the connecting pin is threadedly connected with lock nuts at both ends, the joint bearings adopt a self-lubricating structure, and rubber pad layers are additionally arranged in the lug plate connecting holes, the utility model eliminates eccentric load stress through the self-adaptive alignment ability of joint bearings, combines self-lubricating and damping design, and significantly prolongs the service life of the equipment.

Description

Technical Field

[0001] This application relates to the technical field of hydraulic cylinder equipment for bending machines, and specifically discloses a hydraulic cylinder and slider connection device for a bending machine. Background Technology

[0002] A bending machine is a machine capable of bending sheet metal. Its main structure includes a support frame, a worktable, and a clamping plate. The worktable is placed on the support frame and consists of a base and a pressure plate. The base is connected to the clamping plate via a hinge. The base consists of a housing, a coil, and a cover plate. The coil is placed in a recess in the housing, and the top of the recess is covered by the cover plate. During operation, the coil is energized by a wire. After energization, it generates an attractive force on the pressure plate, thereby clamping the thin sheet between the pressure plate and the base.

[0003] In a bending machine, the connection between the hydraulic cylinder and the slider is a crucial component, and its stability and reliability directly affect the machine's performance. Traditional bending machine cylinder-slider connections typically use pins or bolts for direct connection. While this method is simple, in practice, installation errors in the cylinder and uneven force distribution on the slider during movement can easily lead to tilting or jamming, affecting the bending machine's accuracy and efficiency. Furthermore, traditional connection structures struggle to achieve flexible connections between the cylinder and slider, failing to effectively compensate for machining and installation errors. Over time, this can cause wear and damage to the connecting components, increasing maintenance costs.

[0004] Therefore, the inventors have provided a hydraulic cylinder and slider connection device for a bending machine to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to solve the problems of uneven force distribution and easy tilting and jamming in the existing bending machine connection structure.

[0006] To achieve the above objectives, the basic solution of this utility model provides a hydraulic cylinder and slider connection device for a bending machine, including a slider, hydraulic cylinders symmetrically arranged on both sides of the slider, and a connecting assembly for connecting the slider and the hydraulic cylinders. The bottom of the slider is symmetrically provided with mounting seats, and mounting holes are provided on the mounting seats. The piston rod ends of the hydraulic cylinders are provided with connectors, and ear plates are provided on both sides of the connectors. Connecting holes are provided on the ear plates. The connecting assembly includes a spherical bearing and a connecting pin. The spherical bearing is installed in the mounting hole, and the connecting pin passes through the connecting hole on the ear plate and the inner ring of the spherical bearing in sequence, thereby connecting the piston rod of the hydraulic cylinder to the mounting seat.

[0007] Furthermore, the outer ring of the spherical bearing is interference-fitted with the mounting hole.

[0008] Furthermore, both ends of the connecting pin are threaded, and the threads can be detachably connected to nuts.

[0009] Furthermore, a washer is provided between the nut and the connecting pin.

[0010] Furthermore, the spherical bearing is a self-lubricating spherical bearing, and a solid lubricating material layer is provided on the inner bore surface of the inner ring or the sliding contact surface of the inner and outer rings of the spherical bearing.

[0011] Furthermore, a rubber pad layer is provided inside the connection hole.

[0012] The principle and effect of this basic scheme are as follows:

[0013] 1. Adaptive deflection: The spherical bearing allows the piston rod to deflect at multiple angles within a range of ±5°, eliminating the additional bending moment caused by uneven force on the slider, thereby enhancing adaptability;

[0014] 2. Wear-resistant design: The self-lubricating bearing and rubber pad layer provide double friction reduction, reducing wear on the connecting pin;

[0015] 3. Easy to maintain: The nuts at both ends of the connecting pin are detachable, making it easy and quick to replace the bearing or pin.

[0016] 4. Noise reduction and vibration damping: The rubber pad layer effectively absorbs bending impact vibration, reducing equipment operating noise. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This paper shows an overall schematic diagram of a hydraulic cylinder and slider connection device for a bending machine according to an embodiment of this application;

[0019] Figure 2 This paper shows an enlarged schematic diagram of the connection component of a hydraulic cylinder and slider connection device for a bending machine according to an embodiment of this application;

[0020] Figure 3 A schematic diagram of the mounting holes for a cylinder-slider connection device of a bending machine according to an embodiment of this application is shown. Detailed Implementation

[0021] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0022] The reference numerals in the accompanying drawings include: slider 1, cylinder 2, connecting assembly 3, mounting base 4, mounting hole 5, piston rod 6, connector 7, ear plate 8, connecting hole 9, spherical bearing 10, connecting pin 11, nut 12, and washer 13.

[0023] A hydraulic cylinder and slide block connection device for a bending machine, implementing, for example... Figure 1 , Figure 2 , Figure 3 The system includes a slider 1, a hydraulic cylinder 2, and a connecting assembly 3 for connecting the slider 1 and the hydraulic cylinder 2. Two mounting seats 4 are symmetrically arranged at the bottom of the slider 1, each with a mounting hole 5. Two hydraulic cylinders 2 are symmetrically distributed on both sides of the slider 1. Each hydraulic cylinder 2 has a connecting head 7 at the end of its piston rod 6, and ear plates 8 are provided on both sides of the connecting head 7, with connecting holes 9 on the ear plates 8.

[0024] The connecting assembly 3 includes a spherical bearing 10 and a connecting pin 11. The outer ring of the spherical bearing 10 is interference-fitted with the mounting hole 5 and is installed inside the mounting hole 5. The connecting pin 11 passes sequentially through the connecting hole 9 on the ear plate 8 and the inner ring of the spherical bearing 10, connecting the piston rod 6 of the hydraulic cylinder 2 to the mounting seat 4 of the slider 1. Both ends of the connecting pin 11 are threaded, and nuts 12 and washers 13 are installed on the threads. The nuts 12 and washers 13 can fix the connecting pin 11 to the ear plate 8 to prevent the connecting pin 11 from falling off.

[0025] Working principle: During use, two hydraulic cylinders 2 are symmetrically distributed on both sides of the slider 1 and connected to the mounting base 4 of the slider 1 via the connecting assembly 3. When the hydraulic cylinders 2 are working, the extension and retraction movement of the piston rod 6 is transmitted to the spherical bearing 10 through the connector 7 and the connecting pin 11. The spherical motion characteristics of the spherical bearing 10 allow for a certain angular deviation between the piston rod 6 and the slider 1, thereby compensating for the installation error of the hydraulic cylinders 2 and the force deviation of the slider 1 during movement, enabling the slider 1 to move up and down smoothly and avoiding tilting or jamming.

[0026] This invention utilizes the spherical motion characteristics of a spherical bearing on the mounting base of the slider to achieve a movable connection between the hydraulic cylinder and the slider. This effectively compensates for cylinder installation errors and force deviations during slider movement, ensuring smooth slider operation and preventing tilting or jamming, thus improving the working accuracy and efficiency of the bending machine. Furthermore, the spherical bearing reduces wear between connecting components, extends the equipment's service life, and lowers maintenance costs.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A hydraulic cylinder and slider connection device for a bending machine, characterized in that, The device includes a slider, hydraulic cylinders symmetrically arranged on both sides of the slider, and a connecting assembly for connecting the slider and the hydraulic cylinders. The bottom of the slider is symmetrically provided with mounting seats, and the mounting seats have mounting holes. The piston rod ends of the hydraulic cylinders are provided with connectors, and ear plates are provided on both sides of the connectors. The ear plates have connecting holes. The connecting assembly includes a spherical bearing and a connecting pin. The spherical bearing is installed in the mounting hole, and the connecting pin passes through the connecting hole on the ear plate and the inner ring of the spherical bearing in sequence, thereby connecting the piston rod of the hydraulic cylinder to the mounting seat.

2. The hydraulic cylinder and slider connection device for a bending machine according to claim 1, characterized in that, The outer ring of the spherical bearing is interference-fitted with the mounting hole.

3. The hydraulic cylinder and slider connection device for a bending machine according to claim 1, characterized in that, Both ends of the connecting pin are threaded, and the threads can be detachably connected to nuts.

4. The hydraulic cylinder and slider connection device for a bending machine according to claim 3, characterized in that, A washer is provided between the nut and the connecting pin.

5. The hydraulic cylinder and slider connection device for a bending machine according to claim 1, characterized in that, The spherical plain bearing is a self-lubricating spherical plain bearing, and a solid lubricating material layer is provided on the inner bore surface of the inner ring or the sliding contact surface of the inner and outer rings.

6. The hydraulic cylinder and slider connection device for a bending machine according to claim 1, characterized in that, A rubber pad is provided inside the connection hole.

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