CN116141257A

CN116141257A - Buckling machine

Info

Publication number: CN116141257A
Application number: CN202310388191.2A
Authority: CN
Inventors: 刘瑾林; 徐洪
Original assignee: Wuhan Hemeida Intelligent Equipment Co ltd
Current assignee: Wuhan Hemeida Intelligent Equipment Co ltd
Priority date: 2023-04-12
Filing date: 2023-04-12
Publication date: 2023-05-23

Abstract

The invention discloses a buckling machine, which comprises a workbench, a driving mechanism and a plurality of groups of crank connecting rod assemblies, wherein a through hole is vertically formed in the workbench, the plurality of groups of crank connecting rod assemblies are uniformly distributed along the circumferential direction of the through hole, a plurality of sliding grooves which are equal in number and correspond to the crank connecting rod assemblies one by one are uniformly distributed at the upper end of the workbench, the sliding grooves are arranged along the radial direction of the through hole, connecting rods of the crank connecting rod assemblies are slidably arranged in the corresponding sliding grooves, one ends of the connecting rods extend to the upper parts of the through holes and are detachably connected with buckling heads, the other ends of the connecting rods are in rotary connection with one ends of cranks of the corresponding crank connecting rod assemblies, the other ends of the cranks are in transmission connection with the driving mechanism, the other ends of the cranks are uniformly distributed along the circumferential direction of the through hole, and the driving mechanism drives the cranks to synchronously rotate along the circumferential direction of the through hole so that the buckling heads are mutually close to or far away from each other. The invention provides a buckling machine with stable performance, which can output a buckling force with larger tonnage through smaller thrust.

Description

Buckling machine

Technical Field

The invention relates to the field of air spring buckling. More particularly, the present invention relates to a crimping machine.

Background

At present, in the field of air spring buckling, the buckling total force is large, the buckling of an oil cylinder is mainly used in the market, and along with the appearance of an environment-friendly large-tonnage electric cylinder, the buckling machine with the electric cylinder as the main part in the market appears, but the buckling principle is to output annular buckling force by using a cam friction surface.

The total force is the withholding equipment of the annular centripetal force more than 10 tons, and the major part of the current market is divided into three parts: firstly, a buckling press of a high-pressure oil pipe pressing machine type widely adopted at present utilizes a composite oil cylinder to push a hollow piston to move, and utilizes a convex-concave mechanism to enable buckling heads of a plurality of petals to move towards a circle center so as to achieve the purpose of shrinkage pipe; and secondly, a plurality of hydraulic cylinders are arranged in a circular centripetal array, and force is generated in the direction of the circle center through the output of the hydraulic cylinders. A plurality of electric cylinders are arranged in a row on the circumference to apply force to the circle center; and thirdly, driving a large circular object to rotate by one or more hydraulic cylinders or electric cylinders, wherein the inner ring of the circular object is provided with a cam structure, and pushing a circumferentially arranged pressure head mechanism by a concave-convex structure, so that the pressure head moves to generate annular force on the object.

The equipment of the above-mentioned several types occupies less area, and some can guarantee the excircle precision, but because the above-mentioned equipment has all used unsmooth friction mechanism, the accuracy of withholding for a long time can not guarantee for a long time, can only be applicable to the not high field of precision. In particular, the third type of device described above, due to the use of the principle of leverage, must employ an electric cylinder with a high thrust.

Disclosure of Invention

The invention aims to solve the problems and provide a buckling machine with stable performance, which can output a buckling force with larger tonnage through smaller thrust.

To achieve these objects and other advantages and in accordance with the purpose of the invention, there is provided a buckling machine including a workbench, a driving mechanism and a plurality of sets of crank link assemblies, wherein a through hole is vertically provided on the workbench, the plurality of sets of crank link assemblies are uniformly distributed along the circumference of the through hole, a plurality of sliding grooves which are equal in number and correspond to the crank link assemblies one by one are uniformly distributed on the upper end of the workbench, the sliding grooves are arranged along the radial direction of the through hole, the connecting rods of the crank link assemblies are slidably arranged in the corresponding sliding grooves, one ends of the connecting rods extend to the upper side of the through hole and are detachably connected with buckling heads, the other ends of the connecting rods are rotatably connected with one ends of corresponding cranks of the crank link assemblies, the other ends of the cranks are in transmission connection with the driving mechanism, and the other ends of the cranks are uniformly distributed along the circumference of the through hole, and the driving mechanism drives the cranks to synchronously rotate along the circumference of the through hole so that the buckling heads are mutually close to or far away.

Preferably, in the buckling and pressing machine, a fixed ring coaxial with the through hole is arranged at the upper end of the workbench, and a plurality of sliding grooves are uniformly distributed at the upper end of the fixed ring along the circumferential direction of the sliding grooves.

Preferably, in the buckling and pressing machine, a plurality of limiting parts are uniformly distributed at the upper end of the fixed circular ring along the circumferential direction, the sliding groove is formed between any two adjacent limiting parts, a sliding rail is arranged on one side of each limiting part, a sliding block corresponding to the sliding rail is arranged on the connecting rod, and the sliding block is slidably arranged on the corresponding sliding rail.

Preferably, in the buckling machine, a rotary ring coaxial with the fixed ring is arranged outside the fixed ring, the rotary ring is rotationally connected with the workbench, the other end of the crank is rotationally connected with the rotary ring, and the rotary ring is in transmission connection with the driving mechanism.

Preferably, in the buckling and pressing machine, a turntable bearing is horizontally arranged at the upper end of the workbench, the upper end and the lower end of an inner ring of the turntable bearing are respectively connected with the fixed circular ring and the workbench, and an outer ring of the turntable bearing is connected with the rotary circular ring.

Preferably, in the buckling and pressing machine, the driving mechanism comprises a telescopic cylinder and a mounting bracket, the mounting bracket is arranged on the workbench, a cylinder body of the telescopic cylinder is rotationally connected with the mounting bracket, and a push rod of the telescopic cylinder is horizontally arranged and is rotationally connected with the outer periphery of the rotary ring.

Preferably, in the buckling machine, a protrusion is provided on the outer periphery of the rotary ring, and a push rod of the telescopic cylinder is rotatably connected with the protrusion.

Preferably, in the buckling and pressing machine, one end of the buckling and pressing head is provided with a circular arc-shaped buckling and pressing surface, one end of the connecting rod is provided with a positioning groove, and the other end of the buckling and pressing head extends into the positioning groove and is fixedly connected with the connecting rod through a connecting piece.

Preferably, in the buckling and pressing machine, an installation hole communicated with the positioning groove is formed in the upper end of the connecting rod, a limiting hole coaxial with the installation hole is formed in the bottom wall of the positioning groove, a positioning hole coaxial with the installation hole is formed in the other end of the buckling and pressing head, a nut coaxial with the installation hole is arranged at the upper end of the connecting rod, a matched bolt is installed in the internal thread of the nut, and the lower end of the bolt penetrates through the positioning hole and extends into the limiting hole, and the nut and the bolt form the connecting piece.

Preferably, in the buckling and pressing machine, a limiting groove is arranged on the bottom wall of the positioning groove, the limiting groove is arranged along the radial direction of the through hole, and a limiting strip corresponding to the limiting groove is arranged at the lower end of the buckling and pressing head.

The beneficial effects of the invention are as follows:

1. the buckling machine disclosed by the invention can output the buckling force with larger tonnage through the electric cylinder with smaller thrust by utilizing the crank joint principle.

2. The buckling machine provided by the invention adopts the turntable bearing to realize rotation, and the buckling precision can be ensured for a long time.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

FIG. 1 is a schematic view of a buckling press according to the present invention;

FIG. 2 is a top view of the buckle press according to the present invention;

FIG. 3 is a bottom view of the buckle press according to the present invention;

FIG. 4 is a side view of a buckle press according to the present invention;

FIG. 5 is a schematic view of a crank and connecting rod assembly according to the present invention;

FIG. 6 is a schematic view of the connection of a stationary ring and a rotating ring according to the present invention;

FIG. 7 is a schematic view of a connecting rod according to the present invention;

fig. 8 is a schematic structural view of a buckling head according to the present invention.

In the figure, a workbench is shown as the 1; 2-through holes; 3-sliding grooves; 4-connecting rods; 5-buckling the pressure head; 6-crank; 7-fixing the ring; 8-limiting pieces; 9-sliding rails; 10-sliding blocks; 11-rotating the circular ring; 12-a turntable bearing; 13-a telescopic cylinder; 14-bulge; 15-positioning grooves; 16-limiting holes; 17-positioning holes; 18-a nut; 19-a bolt; 20-a limit groove; 21-limit bar.

Detailed Description

The present invention is described in further detail below with reference to the drawings to enable those skilled in the art to practice the invention by referring to the description.

It should be noted that, in the description of the present invention, the terms "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

As shown in fig. 1-5, an embodiment of the present invention provides a buckling machine, including a workbench 1, a driving mechanism and a plurality of groups of crank link assemblies, where the workbench 1 is vertically provided with a through hole 2, the plurality of groups of crank link assemblies are uniformly distributed along the circumference of the through hole 2, a plurality of sliding grooves 3 corresponding to the crank link assemblies in number and one to one are uniformly distributed at the upper end of the workbench 1, the sliding grooves 3 are arranged along the radial direction of the through hole 2, the connecting rod 4 of the crank link assembly is slidably arranged in the corresponding sliding groove 3, one end of the connecting rod 4 extends to the upper side of the through hole 2 and is detachably connected with a buckling head 5, the other end of the connecting rod is rotatably connected with one end of the corresponding crank 6 of the crank link assembly, the other end of the crank 6 is in transmission connection with the driving mechanism, and the other ends of the plurality of the crank 6 are uniformly distributed along the circumference of the through hole 2, and the driving mechanism drives the plurality of crank 6 to synchronously rotate along the circumference of the through hole 2, so that the buckling heads 5 are close to or far away from each other.

In this embodiment, when the driving mechanism drives the crank 6 of the crank-link assembly to rotate, the crank 6 drives the corresponding link 4 to rotate, and because the chute 3 limits the link 4, the link 4 can only slide along the radial direction of the through hole 2, so that the buckling head 5 at one end of the link 4 can move along the radial direction of the through hole 2 under the driving of the crank-link assembly, and the acting force of the buckling head 5 on the workpiece to be added is also along the radial direction of the through hole 2 when the buckling head 5 works. In this embodiment, through the circumference equipartition with multiunit crank link assembly along through-hole 2, a plurality of buckling heads 5 just can be close to each other simultaneously like this, form a ring-shaped buckle portion, when using the buckling machine, will wait to process the coaxial setting of work piece in through-hole 2, wait to process the work piece and need the position of buckle to lie in between a plurality of buckling heads 5 simultaneously, drive a plurality of buckling heads 5 through actuating mechanism and be close to each other, a plurality of buckling heads 5 export ring-shaped buckling pressure to the machined part that lies in wherein. In this embodiment, the driving mechanism only needs to drive the crank 6 to rotate by a certain angle, so that the plurality of buckling heads 5 can be mutually close to or far away from each other.

Preferably, as another embodiment of the present invention, a fixed ring 7 coaxial with the through hole 2 is provided at the upper end of the working table 1, and a plurality of sliding grooves 3 are uniformly distributed at the upper end of the fixed ring 7 along the circumferential direction thereof. The upper end of the fixed circular ring 7 is uniformly distributed with a plurality of limiting pieces 8 along the circumferential direction, a sliding groove 3 is formed between any two adjacent limiting pieces 8, one side of each limiting piece 8 is provided with a sliding rail 9, the connecting rod 4 is provided with a sliding block 10 corresponding to the sliding rail 9, and the sliding block 10 is slidably arranged on the corresponding sliding rail 9.

In this embodiment, a plurality of sliding grooves 3 are formed by a plurality of limiting members 8, and by arranging a sliding rail 9 on one side of the limiting members 8, the direction of the sliding rail 9 is parallel to the sliding direction of a sliding block 10, a connecting rod 4 slides on the sliding grooves 3 by the sliding block 10 on the sliding rail 9, and the sliding stability of the connecting rod 4 in the sliding grooves 3 is further improved by the sliding rail 9 and the sliding block 10.

Preferably, as another embodiment of the present invention, as shown in fig. 6, a rotary ring 11 coaxial with the fixed ring 7 is provided outside the fixed ring 7, the rotary ring 11 is rotatably connected with the table 1, the other end of the crank 6 is rotatably connected with the rotary ring 11, and the rotary ring 11 is in transmission connection with the driving mechanism.

In this embodiment, by rotatably arranging the rotary ring 11 on the workbench 1, the driving mechanism only needs to drive the rotary ring 11 to rotate, so that synchronous rotation of the cranks 6 of the plurality of groups of crank-connecting rod assemblies can be realized. In particular, the driving mechanism may adopt a device capable of outputting and rotating, such as a rotary truncated cone, which is currently on the market, but because a relatively large buckling force is required when the buckling head 5 works, the device such as the rotary truncated cone is directly used for realizing rotation through a motor, and the motor is required to have a very high torque, which causes excessive equipment cost. In this embodiment, the telescopic cylinder 13 may be used as a driving mechanism, specifically, as one embodiment, the driving mechanism includes the telescopic cylinder 13 and a mounting bracket, the mounting bracket is disposed on the workbench 1, a cylinder body of the telescopic cylinder 13 is rotationally connected with the mounting bracket, a push rod of the telescopic cylinder is horizontally disposed and rotationally connected with an outer circumference of the rotary ring 11, a protrusion 14 is disposed on an outer circumference of the rotary ring 11, and the push rod of the telescopic cylinder 13 is rotationally connected with the protrusion 14. The forward transmission and the reverse rotation of the rotary ring 11 are realized through the expansion and contraction of the push rod of the telescopic cylinder 13, so that the plurality of cranks 6 are driven to synchronously rotate, the rotation of the rotary ring 11 is converted into the linear movement of the buckling head 5, the telescopic cylinder 13 generally adopts an electric cylinder, and at the moment, the electric cylinder only needs smaller thrust, and can output larger tonnage buckling force through the buckling head 5.

Preferably, as another embodiment of the present invention, a turntable bearing 12 is horizontally disposed at the upper end of the table 1, the upper and lower ends of the inner ring of the turntable bearing 12 are respectively connected to the fixed ring 7 and the table 1, and the outer ring thereof is connected to the rotating ring 11.

In this embodiment, in order to ensure long-term stable operation of the rotary round table, by horizontally arranging a turntable bearing 12 at the upper end of the workbench 1, stable rotation between the rotary ring 11 and the fixed ring 7 is realized through the turntable bearing 12, and the buckling precision can be ensured for a long time

Preferably, as another embodiment of the present invention, one end of the buckling head 5 has a circular arc buckling surface, one end of the connecting rod 4 is provided with a positioning slot 15, and the other end of the buckling head 5 extends into the positioning slot 15 and is connected and fixed with the connecting rod 4 through a connecting piece.

In this embodiment, as shown in fig. 7 and 8, the upper end of the connecting rod 4 is provided with a mounting hole communicated with the positioning groove 15, the bottom wall of the positioning groove 15 is provided with a limiting hole 16 coaxial with the mounting hole, the other end of the buckling head 5 is provided with a positioning hole 17 coaxial with the mounting hole, the upper end of the connecting rod 4 is provided with a nut 18 coaxial with the mounting hole, a matched bolt 19 is mounted in the nut 18 in a threaded manner, the lower end of the bolt 19 passes through the positioning hole 17 and extends into the limiting hole 16, and the buckling head 5 and the connecting rod 4 can be connected by tightening the bolt 19 until the lower end of the bolt extends into the limiting hole 16. Meanwhile, in order to prevent the buckling and pressing head 5 from rotating relative to the connecting rod 4, a limiting groove 20 is arranged on the bottom wall of the positioning groove 15, the limiting groove 20 is arranged along the radial direction of the through hole 2, a limiting strip 21 corresponding to the limiting groove 20 is arranged at the lower end of the buckling and pressing head 5, and when the limiting strip 21 is clamped in the limiting groove 20, the buckling and pressing head 5 and the connecting rod 4 can be prevented from horizontally rotating.

Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown, it is well suited to various fields of use for which the invention is suited, and further modifications may be readily made by one skilled in the art, and the invention is therefore not to be limited to the particular details and examples shown and described herein, without departing from the general concepts defined by the claims and the equivalents thereof.

Claims

1. The utility model provides a withhold machine, its characterized in that, includes workstation (1), actuating mechanism and multiunit crank link assembly, vertical being equipped with on workstation (1) a through-hole (2), multiunit crank link assembly follows the circumference equipartition of through-hole (2), workstation (1) upper end equipartition have with crank link assembly quantity equals and a plurality of spouts (3) of one-to-one, spout (3) are followed the radial setting of through-hole (2), crank link assembly's connecting rod (4) slidable set up in corresponding spout (3), its one end extends to through-hole (2) top and detachable is connected with withhold head (5), its other end with the one end rotation of crank link assembly's crank (6) that corresponds, the other end of crank (6) with the actuating mechanism transmission is connected, and a plurality of the other end of crank (6) is followed the circumference of through-hole (2), actuating mechanism drives many crank (6) are synchronous along in the radial setting of through-hole (2), so that a plurality of equipartitions are kept away from each other circumference of withhold head (5).

2. A buckling machine according to claim 1, characterized in that the upper end of the workbench (1) is provided with a fixed circular ring (7) coaxial with the through hole (2), and a plurality of sliding grooves (3) are uniformly distributed at the upper end of the fixed circular ring (7) along the circumferential direction.

3. A buckling machine according to claim 2, characterized in that a plurality of limiting members (8) are uniformly distributed at the upper end of the fixed circular ring (7) along the circumferential direction, the sliding groove (3) is formed between any two adjacent limiting members (8), a sliding rail (9) is arranged at one side of each limiting member (8), a sliding block (10) corresponding to the sliding rail (9) is arranged on the connecting rod (4), and the sliding blocks (10) are slidably arranged on the corresponding sliding rail (9).

4. A withholding machine as claimed in claim 2, characterized in that a rotating ring (11) coaxial with the stationary ring (7) is provided outside the stationary ring, the rotating ring (11) is rotatably connected to the table (1), the other end of the crank (6) is rotatably connected to the rotating ring (11), and the rotating ring (11) is in transmission connection with the drive mechanism.

5. A buckling machine according to claim 4, wherein a turntable bearing (12) is horizontally arranged at the upper end of the workbench (1), the upper and lower ends of the inner ring of the turntable bearing (12) are respectively connected with the fixed circular ring (7) and the workbench (1), and the outer ring of the turntable bearing is connected with the rotary circular ring (11).

6. A withholding machine as claimed in claim 5, characterized in that said drive means comprise a telescopic cylinder (13) and a mounting bracket provided on said table (1), the cylinder body of said telescopic cylinder (13) being in rotary connection with said mounting bracket, the push rod of which is arranged horizontally and in rotary connection with the outer turn of said rotary ring (11).

7. A crimping machine according to claim 6, characterized in that the outer periphery of the rotary ring (11) is provided with a bulge (14), and the push rod of the telescopic cylinder (13) is in rotational connection with the bulge (14).

8. A crimping machine according to any one of claims 1-7, characterized in that one end of the crimping head (5) is provided with a circular arc-shaped crimping surface, one end of the connecting rod (4) is provided with a positioning groove (15), and the other end of the crimping head (5) extends into the positioning groove (15) and is fixedly connected with the connecting rod (4) through a connecting piece.

9. A buckling machine according to claim 8, characterized in that the upper end of the connecting rod (4) is provided with a mounting hole communicated with the positioning groove (15), the bottom wall of the positioning groove (15) is provided with a limiting hole (16) coaxial with the mounting hole, the other end of the buckling head (5) is provided with a positioning hole (17) coaxial with the mounting hole, the upper end of the connecting rod (4) is provided with a nut (18) coaxial with the mounting hole, a matched bolt (19) is mounted in the nut (18) in a threaded manner, the lower end of the bolt (19) penetrates through the positioning hole (17) and extends into the limiting hole (16), and the nut (18) and the bolt (19) form the connecting piece.

10. A buckling machine according to claim 8, characterized in that a limit groove (20) is arranged on the bottom wall of the positioning groove (15), the limit groove (20) is arranged along the radial direction of the through hole (2), and a limit bar (21) corresponding to the limit groove (20) is arranged at the lower end of the buckling head (5).