CN209813130U

CN209813130U - Sliding block connecting device

Info

Publication number: CN209813130U
Application number: CN201920284815.5U
Authority: CN
Inventors: 孙静燕; 梅碧舟; 卢立全; 魏贤达; 冯凯; 王达; 孙明杰; 黄益均
Original assignee: Zhejiang Forging Pml Precision Mechanism Ltd
Current assignee: Zhejiang Forging Pml Precision Mechanism Ltd
Priority date: 2019-03-06
Filing date: 2019-03-06
Publication date: 2019-12-20
Anticipated expiration: 2029-03-06

Abstract

The utility model provides a slider connecting device includes connecting rod, slider and round pin axle, the one end of connecting rod is equipped with the shaft hole of connecting the bent axle, the other end of connecting rod is equipped with the connection the spheroid of slider, the slider is equipped with and holds the chamber, hold chamber adaptation in the spheroid, the round pin axle is located hold the intracavity, the round pin hub connection the spheroid with the slider for solve the crank press and can appear the phenomenon that connecting rod and slider wearing and tearing aggravation in the use, thereby prevent effectively that the joint gap between slider and the connecting rod from increaseing, improve the precision of the punching press when processing the product.

Description

Sliding block connecting device

Technical Field

The utility model belongs to the technical field of crank pressure machinery and specifically relates to a slider connecting device.

Background

The press (including a punch press and a hydraulic press) is a universal press with an exquisite structure. The press machine has the characteristics of wide application, high production efficiency and the like, and can be widely applied to processes of cutting, punching, blanking, bending, riveting, forming and the like. The metal is processed into parts by applying a strong pressure to the metal blank to cause plastic deformation and fracture of the metal. When the mechanical press works, a motor drives a large belt pulley (usually used as a flywheel) through a triangle belt, and a crank-slider mechanism is driven through a gear pair and a clutch, so that a slider and a male die move down linearly. After the forging and pressing work of the mechanical press is finished, the sliding block moves upwards, the clutch is automatically disengaged, and meanwhile, the automatic device on the crankshaft is switched on, so that the sliding block stops near a top dead center.

The press machine drives the working mechanism by a motor through a transmission mechanism to apply technical force to the workpiece. The transmission mechanism is a belt transmission and gear transmission speed reducing mechanism; the working mechanism comprises a screw mechanism, a crank connecting rod mechanism and a hydraulic cylinder.

The press machine is divided into a screw press machine, a crank press machine and a hydraulic press machine. Crank presses are also known as mechanical presses.

The screw press has no fixed bottom dead center, and can be used for multiple-time beating forming of large die forgings and single beating, continuous beating and inching. The striking force is related to the deformation of the workpiece, and is small when the deformation is large and large when the deformation is small (such as cold shock). In these respects it is similar to a forging hammer. But its striking force is closed by machine frame, so that it is stable in operation, and its vibration is less than that of forging hammer, and does not need large foundation.

The lower part of the press is provided with a forge piece ejection device. The screw press has the functions of various forging and pressing machines such as a die forging hammer, a mechanical press and the like, has strong universality and can be used for die forging, blanking, deep drawing and other processes. In addition, the screw press has simple structure and easy manufacture, so the screw press has wide application.

The press is also called as: the hydraulic press, the oil press and the press machine are composed of four parts: an upper pressing type four-upright oil press; a combined control cabinet; an electric heating system and a heat preservation device; and a mold conveying rack. The above-mentioned components adopt the integrated design, make it elegant, pleasing to the eye, compact structure easy operation is reliable, and it is convenient to maintain.

The press should have reliable structural rigidity resistance to deformation, and the position on the hydraulic pressure station, the pressure bar set up mould hoist and mount connecting device, and hydraulic pressure station and pressure bar have dismantled and assembled dust cover. The workpiece can go out in the direction of length (3000). The technical parameters are as follows: nominal pressure 190T; the effective working table area is 3000 multiplied by 750mm 2; the pressure row movement speed is 75-100 mm/s; the maximum opening and closing distance is 550mm (without a heating plate); the pressure maintaining time is 8h (the temperature of the workpiece is 130 ℃); the height of the press base is 0.5-0.55 m; the planeness of the pressure bar and the base is 0.2 mm; the average gap of the pressing row base is less than or equal to 0.25mm (not less than 10 measuring points).

The rack is a structure with the upper part provided with a rolling conveyor, one end of the rack is connected with (detachable) the base of the press machine, and the other end of the rack is placed on the ground (the height of the rack can be adjusted). Carrying capacity 3T; the upper surface of the height roller conveyor is flush with the lower heating plate; a plane size (2800 to 2900) x 750mm2 (usable portion); the heat insulation plate is arranged around the pressure bar and the base of the press machine to reduce the heat loss in the heating process of the die and is made of an aluminum plate (or a stainless steel plate) and a heat insulation material. Can be divided into a plurality of blocks for convenient placement.

The screw press is a forging machine which uses a screw rod and a nut as a transmission mechanism and converts forward and reverse rotation motion of a flywheel into up and down reciprocating motion of a sliding block by screw transmission. When the energy-saving flywheel works, the motor enables the flywheel to rotate in an accelerating mode to store energy, and meanwhile the sliding block is pushed to move downwards through the screw and the nut. When the sliding block contacts with the workpiece, the flywheel is forced to decelerate to stop completely, the stored rotational kinetic energy is converted into impact energy, and the workpiece is hit by the sliding block to be deformed. After the striking is finished, the motor enables the flywheel to rotate reversely, and the sliding block is driven to ascend and return to the original position. The specification of the screw press is expressed in terms of nominal working force.

A crank press is one of the most commonly used cold stamping devices and serves as a working platform for the cold stamping die. It has simple structure and convenient use. According to different structural forms of the machine body, the crank press can be divided into an open crank press or a closed crank press; according to the difference of the number of the driving connecting rods, the single-point press or the multi-point press can be divided; the press can be classified into a single press or a double press depending on whether one or two slides are used.

Crank press is in the use, and the connecting rod is connected to the bent axle, drives the connecting rod motion, and connecting rod and slider wearing and tearing aggravation often can appear to lead to the joint gap between slider and the connecting rod to strengthen, the problem that the precision of the punching press when making the processing product can the step-down.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a slider connecting device for solve the crank press and can appear the phenomenon that connecting rod and slider wearing and tearing aggravation in the use, thereby prevent effectively that the joint gap between slider and the connecting rod from increaseing, the precision of the punching press when improving the processing product.

In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides a slider connecting device includes connecting rod, slider and round pin axle, the connecting rod is connected for rectangular shaft-like, the one end of connecting rod is equipped with the shaft hole of connecting the bent axle, the other end of connecting rod is equipped with the connection the spheroid of slider, the connecting rod is used for transmitting the power of bent axle for the slider, and drives reciprocating motion about the slider is, the slider is equipped with and holds the chamber, hold the chamber adaptation in the spheroid, the spheroid can hold the intracavity and do reciprocal rotation, the round pin axle is located hold the intracavity, the round pin hub connection the spheroid with the slider. Through the arrangement of the pin shaft, the clearance between the spherical body and the accommodating cavity can be kept within a certain numerical range in the operation process of the pressure equipment, and the friction degree between the spherical body and the accommodating cavity is reduced.

Preferably, the axis of the pin shaft is parallel to the axis of the shaft hole, and the center of the spheroid is located on the axis or the extension line of the pin shaft. The spheroid makes reciprocating rotation around the axis of round pin axle in holding the intracavity, has restricted the spheroid with hold the wearing and tearing clearance between the chamber and expand.

Preferably, the center of the spheroid is located at the same position as the center of the accommodating cavity, so that the spheroid can rotate smoothly in the accommodating cavity.

Preferably, in order to further reduce the abrasion between the spherical body and the accommodating cavity, the sliding block connecting device is further provided with a lubricating oil channel, and the lubricating oil channel is communicated with the outside and the accommodating cavity, so that the accuracy of the sliding block in the operation process is ensured.

Preferably, the pin shaft is a cylinder.

Drawings

Fig. 1 is a front view of a preferred embodiment according to the present invention;

fig. 2 is a sectional view according to the direction a-a in fig. 1.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.

As shown in fig. 1 to 2, the slider connection device includes a connecting rod 1, a slider 2, a pin 3 and a lubricating oil passage 4, the connecting rod 1 is adapted to the slider 2, and the pin 3 is connected to the connecting rod 1 and the pin 3.

Connecting rod 1 is used for transmitting the power of bent axle to the drive 2 movements of slider, connecting rod 1 is rectangular bar-shaped, and one end is equipped with cylindric shaft hole 12, shaft hole 12 is used for connecting the bent axle, and the other end is equipped with spheroid 11, spheroid 11 be used for rotationally the adaptation in slider 2.

The sliding block 2 is used for stamping a product workpiece, and the sliding block 2 is provided with an accommodating cavity which is used for accommodating and adapting to the spherical body 11, so that the connecting rod 1 can be rotatably connected to the sliding block 2. The containing cavity is a spherical groove which is larger than one half, so that the displacement of the spherical body 11 in the containing cavity can be better limited, the spherical body 11 only rotates in the containing cavity, and the center of the spherical body 11 and the center of the containing cavity are in the same position.

The pin shaft 3 is a cylinder, one end of the pin shaft is connected with the spheroid 11, and the other end of the pin shaft is connected with the sliding block 2. The axis of the pin shaft 3 is parallel to the axis of the shaft hole 12, the axis of the pin shaft 3 can extend or is communicated to the center of the spheroid 11, and the arrangement of the pin shaft 3 further limits the small displacement between the spheroid 11 and the accommodating cavity, so that the spheroid 11 can only be allowed to rotate around the axis of the pin shaft 3 in the accommodating cavity.

The lubricating oil channel 4 is used for reducing the abrasion between the connecting rod 1 and the sliding block 2, and the lubricating oil channel 4 is communicated to the accommodating cavity from the outside and used for conveying lubricating oil to the joint of the spherical body 11 and the sliding block 2, so that the abrasion between machine parts is reduced, and the service life is prolonged.

When the press is used, the crankshaft of the press drives the connecting rod 1 to reciprocate, and the spherical body 11 rotates around the axis of the pin shaft 3 in a reciprocating mode, so that the gap between the spherical body 11 and the accommodating cavity is maintained in a stable numerical range, the gap between the spherical body 11 and the accommodating cavity cannot be enlarged due to the aggravation of abrasion, and the relative stability of work among workpieces is kept.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a slider connecting device, its characterized in that includes connecting rod, slider and round pin axle, the one end of connecting rod is equipped with the shaft hole of connecting the bent axle, the other end of connecting rod is equipped with the connection the spheroid of slider, the slider is equipped with and holds the chamber, hold the chamber adaptation in the spheroid, the round pin axle is located hold the intracavity, the round pin hub connection the spheroid with the slider.

2. The slider connection device according to claim 1, wherein the axis of the pin is parallel to the axis of the shaft hole, and the center of the sphere is located on the axis or the extension line of the pin.

3. The slider coupling device of claim 2, wherein the center of said spheroid is located at the same position as the center of said receiving cavity.

4. The slider connecting device according to claim 3, further comprising an oil passage communicating with the outside and the accommodating chamber.

5. The slider connection of claim 4, wherein said pin is cylindrical.