CN112872172B

CN112872172B - Rotary indexing mechanism

Info

Publication number: CN112872172B
Application number: CN202011547856.2A
Authority: CN
Inventors: 白学胜; 方国平; 付梅军; 张银桥; 叶丹萍
Original assignee: Wanxiang Qianchao Co Ltd; Wanxiang Group Corp
Current assignee: Wanxiang Qianchao Co Ltd; Wanxiang Group Corp
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2022-10-28
Anticipated expiration: 2040-12-24
Also published as: CN112872172A

Abstract

The invention discloses a rotary indexing mechanism, which relates to the technical field of punching processing, and comprises a welding plate and the like, wherein a tubular indexing structure is fixedly connected onto the welding plate, a left sliding chute and a right sliding chute are symmetrically arranged on the pipe wall of the indexing structure and are intersected at the top, and an indexing screw is arranged at the intersection and is fixedly arranged on a connecting rod mechanism and slides along the left sliding chute or the right sliding chute along with the rotation of the connecting rod mechanism; the special punching machine is connected with a driving link mechanism, and the link mechanism is pressed or pulled downwards to extend or retract from the lower part of the transposition structure; the transposition center plate is fixed on the outer wall of the transposition structure, the top of the transposition center plate is rotationally connected with a transposition center through a locking screw, and the transposition center is placed in the left sliding chute and the right sliding chute; the transposition center is in a triangular structure. The invention solves the problems of disordered assembly and easy clamping caused by the existing cylinder structure of the special punching machine and realizes positive and negative rotation by a certain angle.

Description

Rotary indexing mechanism

Technical Field

The invention relates to the field of punching processing technology, in particular to a rotary indexing mechanism.

Background

The transposition technology of the existing special punching machine realizes transposition by utilizing two cylinders, and has the disadvantages of complicated structure, high failure rate and troublesome maintenance. The following disadvantages are mainly present:

1. the structure of an external cylinder, excessive sensors and the like is needed, and the gas circuit is messy and easy to damage;

2. the cylinder is flexibly installed, the accuracy is relatively low, and the failure rate is high in actual work;

3. the use structure is more, and it is troublesome to maintain, and the expense is high.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides a rotary indexing mechanism which solves the problems of disordered assembly and easy clamping caused by the conventional cylinder structure and realizes positive and negative rotation at a certain angle.

The purpose of the invention is achieved by the following technical scheme: the rotary indexing mechanism comprises a welding plate, an indexing structure, an indexing center, a locking screw, an indexing center plate, an indexing screw and a connecting rod mechanism, wherein the welding plate is fixedly connected with the tubular indexing structure; the special punching machine is connected with a driving link mechanism, and the link mechanism is pressed or pulled downwards to extend or retract from the lower part of the indexing structure; the transposition center plate is fixed on the outer wall of the transposition structure, the top of the transposition center plate is connected with a transposition center in a rotating mode through a locking screw, and the transposition center is placed into the left sliding chute and the right sliding chute and used for guiding the sliding direction of the transposition screw and is driven by the transposition screw to change the orientation of the apex angle; the indexing center is of a triangular structure, and the left sliding groove and the right sliding groove extend upwards to form baffle plates at positions close to the bottom edge of the indexing center and used for limiting the rotation angle of the indexing center.

As a further technical scheme, the indexing center is an acute triangle, and the left side and the right side of the indexing center form arc-shaped depressions towards the inner side.

As a further technical scheme, the anti-loosening screw comprises an M5 bolt, an anti-loosening nut, a spring and a spring sleeve, the spring sleeve sleeved with the spring is tightly fixed with a bottom hole of the anti-loosening nut in a propping mode, and the M5 bolt penetrates through the transposition center plate and the transposition center and then is in threaded connection with the anti-loosening nut.

As a further technical scheme, the indexing central plate is fixed on a baffle plate of an indexing structure through a plurality of M6 bolts.

As a further technical scheme, strong magnets are arranged at the edges of two sides of the baffle and used for attracting the transposition centers.

The invention has the beneficial effects that:

1. the indexing cylinder in the original scheme, and machine accessories and air pipes used for mounting the indexing cylinder are omitted, so that the mechanism is simplified;

2. the problem that the original scheme is frequently blocked is solved, and the maintenance time is reduced;

3. simple structure, improved the processing beat.

Drawings

FIG. 1 is a schematic structural diagram of an initial state of the present invention.

Fig. 2 is a schematic structural diagram of a first press-down state according to the present invention.

FIG. 3 is a schematic diagram of the pull-up state according to the present invention.

FIG. 4 is a schematic structural diagram of a second press-down state according to the present invention.

Fig. 5 is a schematic structural view of the check screw.

Description of reference numerals: the device comprises a welding plate 1, an indexing structure 2, a left sliding chute 2-1, a right sliding chute 2-2, a baffle 2-3, an indexing center 3, a locking screw 4, an indexing center plate 5, an indexing screw 6, an M6 bolt 7, a powerful magnet 8, a link mechanism 9, an M5 bolt 10, a locking nut 11, a spring 12 and a spring sleeve 13.

Detailed Description

The invention will be described in detail below with reference to the following drawings:

example (b): as shown in fig. 1 to 4, a rotary indexing mechanism comprises a welding plate 1, an indexing structure 2, an indexing center 3, a locking screw 4, an indexing center plate 5, an indexing screw 6 and a link mechanism 9, wherein the welding plate 1 is fixedly connected with the tubular indexing structure 2, a left chute 2-1 and a right chute 2-2 are symmetrically arranged on the wall of the indexing structure 2 and are intersected at the top, the indexing screw 6 is arranged at the intersection, and the indexing screw 6 is fixedly arranged on the link mechanism 9 and slides along the left chute 2-1 or the right chute 2-2 along with the rotation of the link mechanism 9; the special punching machine is connected with a driving link mechanism 9, and the link mechanism 9 is pressed downwards or pulled upwards, so that the link mechanism 9 extends out of or retracts into the lower part of the transposition structure 2; the transposition center plate 5 is fixed on the outer wall of the transposition structure 2, the top of the transposition center plate 5 is rotatably connected with a transposition center 3 through a locking screw 4, and the transposition center 3 is placed in the left sliding chute 2-1 and the right sliding chute 2-2, is used for guiding the sliding direction of the transposition screw 6 and is driven by the contact of the transposition screw 6 to change the orientation of a vertex angle; the transposition center 3 is an acute triangle, the left side and the right side of the transposition center are inwards sunken to form an arc shape, the positions of the left sliding groove 2-1 and the right sliding groove 2-2, which are close to the bottom side of the transposition center 3, extend upwards to form a baffle plate 2-3, and after the transposition screw 6 slides along the left sliding groove 2-1 or the right sliding groove 2-2 and touches the transposition center 3, the transposition center 3 rotates around the anti-loosening screw 4 until the transposition screw is blocked by the baffle plate 2-3 and cannot rotate continuously, so that the rotation angle of the transposition center 3 is limited. Preferably, the indexing center plate 5 is secured to the stop plates 2-3 of the indexing structure 2 by a plurality of M6 bolts 7. And strong magnets 8 are arranged at the edges of two sides of the baffle 2-3 and are used for attracting the transposition center 3 and ensuring that the transposition center 3 can still contact with and block the baffle 2-3 when the anti-loosening screws 4 fail.

As shown in fig. 5, the check screw 4 includes an M5 bolt 10, a check nut 11, a spring 12 and a spring housing 13, the spring housing 13 housing the spring 12 is tightly fixed to a bottom hole of the check nut 11, and the M5 bolt 10 penetrates through the indexing center plate 5 and the indexing center 3 and then is threadedly coupled to the check nut 11.

The working process of the invention is as follows: as shown in fig. 1, which is a structural schematic diagram in an initial state, a vertex angle of the indexing center 3 points to the right sliding groove 2-2, and a side edge of the indexing center 3 points to the left sliding groove 2-1, when the link mechanism 9 is pressed downward, the indexing screw 6 moves downward first, then is guided by the indexing center 3 and gradually moves leftward and slides along the left sliding groove 2-1, and after touching the indexing center 3, the indexing screw also drives the indexing center 3 to rotate until the indexing center 3 is blocked by the baffle 2-3 and cannot rotate continuously, so that the vertex angle of the indexing center 3 points to the left sliding groove 2-1, and a side edge of the indexing center 3 points to the right sliding groove 2-2, until the indexing screw 6 is clamped into the bottom of the left sliding groove 2-1, to form a first pressing state, as shown in fig. 2, an angle of rotation of the link mechanism 9 in the process is α. Then the link mechanism 9 slides along the left sliding groove 2-1 under the action of upward pulling force to return to the top, and the indexing center 3 is not contacted with the indexing screw 6, so that a lifting state is formed, as shown in fig. 3. The link mechanism 9 is rotated by an angle-alpha during this process. Then the link mechanism 9 is under the action of downward pressure, so that the indexing screw 6 moves downward again, and is guided by the indexing center 3 to gradually slide rightward and along the right sliding groove 2-2, the indexing screw touches the indexing center 3 and then drives the indexing center 3 to rotate until the indexing center 3 is blocked by the baffle 2-3 and cannot rotate continuously, so that the vertex angle of the indexing center 3 points to the right sliding groove 2-2, meanwhile, the side edge of the indexing center 3 points to the left sliding groove 2-1 until the indexing screw 6 is clamped into the bottom of the right sliding groove 2-2, and a downward pressing state II is formed, as shown in fig. 4, the rotating angle of the link mechanism 9 is also-alpha in the process. Finally, the link mechanism 9 slides along the right chute 2-2 under the action of upward tension to return to the top, and the indexing center 3 does not contact with the indexing screw 6 and returns to the initial state shown in fig. 1. The link mechanism 9 is rotated by an angle α in this process.

Under the condition that the link mechanism 9 is pressed down twice to rotate by positive and negative alpha angles, the difference between the link mechanism 9 in the first pressing state and the link mechanism 9 in the second pressing state is just 2 alpha angles, so that the link mechanism 9 can rotate by 2 alpha angles in a reciprocating mode under the working condition that pressure and pulling force are circularly exerted on the link mechanism 9 in a reciprocating mode. The 2 alpha angle is determined according to the rotation angle of the link mechanism 9 required by practice, and the corresponding circular arc perimeter 2 alpha R under a certain radius R is calculated.

It should be understood that equivalent substitutions and changes to the technical solution and the inventive concept of the present invention should be made by those skilled in the art to the protection scope of the appended claims.

Claims

1. A rotary indexing mechanism, comprising: the welding device comprises a welding plate (1), a transposition structure (2), a transposition center (3), a locking screw (4), a transposition center plate (5), a transposition screw (6) and a link mechanism (9), wherein the welding plate (1) is fixedly connected with the tubular transposition structure (2), a left chute (2-1) and a right chute (2-2) are symmetrically arranged on the pipe wall of the transposition structure (2) and are intersected at the tops, the transposition screw (6) is arranged at the intersection, the transposition screw (6) is fixedly arranged on the link mechanism (9), the transposition screw (6) slides along the left chute (2-1) or the right chute (2-2) through the descending action of the link mechanism (9), and the transposition screw (6) drives the link mechanism (9) to rotate at a certain angle while sliding along the left chute (2-1) or the right chute (2-2); the special punching machine is connected with a driving link mechanism (9), and the link mechanism (9) is pressed downwards or pulled upwards, so that the link mechanism (9) extends out of or retracts into the lower part of the transposition structure (2); the indexing central plate (5) is fixed on the outer wall of the indexing structure (2), the top of the indexing central plate (5) is rotatably connected with an indexing center (3) through a locking screw (4), and the indexing center (3) is placed in the left sliding chute (2-1) and the right sliding chute (2-2) and used for guiding the sliding direction of the indexing screw (6) and is driven by the contact of the indexing screw (6) to change the orientation of a vertex angle; the transposition center (3) is an acute triangle, and the left side and the right side of the transposition center form arc-shaped depressions towards the inner side; the left sliding chute (2-1) and the right sliding chute (2-2) extend upwards to form a baffle (2-3) at the position close to the bottom edge of the indexing center (3) and are used for limiting the rotation angle of the indexing center (3).

2. The rotary indexing mechanism of claim 1, wherein: the check screw (4) comprises an M5 bolt (10), a check nut (11), a spring (12) and a spring sleeve (13), the spring sleeve (13) sleeved with the spring (12) is tightly fixed with the bottom hole of the check nut (11), and the M5 bolt (10) penetrates through the center indexing plate (5) and the center indexing plate (3) and then is in threaded connection with the check nut (11).

3. The rotary indexing mechanism of claim 1, wherein: the indexing center plate (5) is fixed on a baffle plate (2-3) of the indexing structure (2) through a plurality of M6 bolts (7).

4. The rotary indexing mechanism of claim 1, wherein: and strong magnets (8) are arranged at the edges of two sides of the baffle (2-3) and are used for attracting the transposition center (3).