CN215789249U

CN215789249U - Variable-pitch tool

Info

Publication number: CN215789249U
Application number: CN202023347163.7U
Authority: CN
Inventors: 沈军; 顾柏锋; 邵灿峰
Original assignee: Zhejiang Axilone Shunhua Aluminium and Plastic Co Ltd
Current assignee: Zhejiang Axilone Shunhua Aluminium and Plastic Co Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2022-02-11
Anticipated expiration: 2030-12-31

Abstract

The application discloses displacement frock, including the frame, install in drive actuating cylinder in the frame, with the displacement subassembly that drives actuating cylinder linkage, the displacement subassembly includes first guide rail and slidable mounting and is in a plurality of tools on the first guide rail, the displacement subassembly has the first state that each tool pastes each other and keeps away from the second state of predetermineeing the distance with each tool, is equipped with the transfer line that can self slide predetermined distance relatively on each tool, and in the displacement direction, each tool passes through the transfer line is connected to adjacent tool. The technical scheme that this application discloses thereby realize keeping away from each other of tool through the transfer line and get into the second state, paste each other through the tool and get into the first state, realize the linkage of a plurality of tools through the drive of single actuating cylinder, simple structure is stable, easily arranges.

Description

Variable-pitch tool

Technical Field

The application relates to the field of automation, especially relate to displacement frock.

Background

With the development of the industry, the demand for automation of the equipment is higher and higher. In a flow operation, the workpiece spacing requirements between different processes may vary, posing certain challenges to automated equipment.

Attempts have been made to design pitch devices. For example, chinese patent publication No. CN210824389U discloses a pitch-changing mechanism, which includes a pitch-changing unit body mounted with a plurality of pickup units; the pitch-variable unit body comprises a pitch-variable driver, a pitch-variable moving assembly, a pitch-variable fixing plate and a pitch-variable base frame; the pitch-changing driver drives the pitch-changing moving assembly to move, so that the distance between two adjacent pitch-changing fixing plates is increased or decreased.

The inventors have found that, similar to the technical solutions described in the above documents, the conventional pitch changing solutions are complicated in structure and low in positioning accuracy of each workpiece, and there is room for improvement.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the application discloses displacement frock, including the frame, install in drive actuating cylinder in the frame, with the displacement subassembly that drives the actuating cylinder linkage, the displacement subassembly includes first guide rail and slidable mounting a plurality of tools on the first guide rail, the displacement subassembly has the first state that each tool leaned on each other and each tool keeps away from the second state of predetermineeing the distance, is equipped with the transfer line that can self slide predetermined distance relatively on each tool, and on the displacement direction, each tool passes through the transfer line is connected to adjacent tool.

Several alternatives are provided below, but not as an additional limitation to the above general solution, but merely as a further addition or preference, each alternative being combinable individually for the above general solution or among several alternatives without technical or logical contradictions.

Optionally, the jig includes:

the sliding seat is in sliding fit with the first guide rail and is attached to the sliding seat of the adjacent jig in the first state, and the transmission rod is arranged on the sliding seat;

and the workpiece clamp is arranged on the sliding seat and used for fixing the workpiece.

Optionally, the cross-sectional shape of the sliding seat is a convex shape, the cross-sectional shape of the first guide rail is a C shape, and the side edges of the opening are turned over oppositely to be overlapped and restrained on the shoulder of the sliding seat.

Optionally, a transmission hole is formed in the sliding seat and penetrates through the sliding seat in the sliding direction, and the transmission hole includes a mounting opening, a sliding cavity and a via hole which are communicated with each other and the aperture of the mounting opening is sequentially reduced; one end of the transmission rod is an expansion end matched with the sliding cavity, the other end of the transmission rod is a driving end penetrating through the via hole to be connected with the adjacent sliding seat, and the expansion end interacts with the side edge of the via hole to drive the sliding seat to move.

Optionally, the transmission rod is of an integral structure and comprises an expansion end, a guide portion and a driving end, wherein the outer diameters of the expansion end, the guide portion and the driving end are sequentially reduced, and the guide portion and the via hole are matched in size.

Optionally, the distance from the driving end to the end face of the expansion end is a distance, and the distance between the driving ends and the end face of the expansion end is equal or unequal.

Optionally, an end cover for closing the transmission hole is arranged on the mounting opening, and a force application hole connected with the driving end on the adjacent sliding seat is arranged on the end cover.

Optionally, the driving cylinder comprises a cylinder barrel mounted on the frame and a piston rod slidably assembled to the cylinder barrel, the piston rod is linked with the pitch-variable assembly through a reversing assembly, and the reversing assembly comprises a second guide rail mounted on the frame, a reversing slider slidably mounted on the second guide rail, and a reversing connecting rod connected between the reversing slider and the pitch-variable assembly; the piston rod is connected with the reversing sliding block, and the piston rod and the reversing connecting rod are located on the same side of the reversing sliding block.

Optionally, the second guide rails are arranged side by side, the reversing sliding blocks are slidably arranged on the second guide rails, the reversing connecting rods are connected with the middle parts of the reversing sliding blocks, the piston rods are connected with the side edges of the reversing sliding blocks, and the cylinder barrel is located on one side of the first guide rail.

Optionally, in the second state, the jigs at the two ends are close to the two ends of the first guide rail, and the reversing slider is located at one end of the second guide rail, which is far away from the pitch-variable assembly.

The technical scheme that this application discloses thereby realize keeping away from each other of tool through the transfer line and get into the second state, paste each other through the tool and get into the first state, realize the linkage of a plurality of tools through the drive of single actuating cylinder, simple structure is stable, easily arranges.

Specific advantageous technical effects will be further explained in conjunction with specific structures or steps in the detailed description.

Drawings

FIGS. 1a and 1b are schematic views of a pitch tool in an embodiment;

FIGS. 2a and 2b are schematic views of a pitch changing fixture in another embodiment;

FIGS. 3a and 3b are schematic views of a pitch changing fixture in another embodiment;

FIG. 4a is a schematic view of an embodiment of a fixture assembly;

FIG. 4b is a schematic diagram of the jig shown in FIG. 4a with internal components;

fig. 4c is a schematic view of a sliding cavity in the jig of fig. 4 a.

The reference numerals in the figures are illustrated as follows:

1. a frame;

2. a driving cylinder; 21. a cylinder barrel; 22. a piston rod;

3. a pitch change assembly; 31. a first guide rail; 32. a jig; 321. a sliding seat; 322. a workpiece holder; 323. A shoulder portion; 324. a drive bore; 325. an installation port; 326. a sliding cavity; 327. a via hole; 328. an end cap; 329. a force application hole; 33. a transmission rod; 331. an enlarged end; 332. a driving end; 333. a guide section;

4. a commutation assembly; 41. a second guide rail; 42. a reversing slide block; 43. a reversing connecting rod.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1a to 4c, the present application discloses a variable-pitch tool, including a frame 1, a driving cylinder 2 installed on the frame 1, a variable-pitch assembly 3 linked with the driving cylinder 2, the variable-pitch assembly 3 including a first guide rail 31 and a plurality of jigs 32 slidably installed on the first guide rail 31, the variable-pitch assembly 3 having a first state (the variable-pitch assembly 3 located above in the drawing in fig. 2 a) in which the jigs 32 are attached to each other and a second state (the variable-pitch assembly 3 located below in the drawing in fig. 2 a) in which the jigs 32 are away from a preset distance, each jig 32 being provided with a transmission rod 33 capable of sliding relative to itself by a preset distance, and in a variable-pitch direction, each jig 32 being connected to an adjacent jig 32 through the transmission rod 33.

Pitch refers to the change in the spacing between jigs 32. During the production process, the change of the spacing can adapt to different process requirements. Technical scheme in this application realizes tool 32 through transfer line 33 and realizes the transmission to next tool 32 after the distance is predetermine in the free motion to can realize the displacement of a plurality of tools 32 through single actuating cylinder 2 that drives. Meanwhile, the distance between the jigs 32 is controlled by the transmission rod 33, so that the influence of the movement precision of the driving mechanism on the precision of the variable distance is avoided, and the driving mechanism is simple in structure, stable and reliable.

In the structure of the jig 32, referring to an embodiment, the jig 32 includes:

the sliding seat 321 is slidably matched on the first guide rail 31 and is attached to the sliding seat 321 of the adjacent jig 32 in a first state, and the transmission rod 33 is arranged on the sliding seat 321;

and a workpiece holder 322 provided on the slide base 321 for fixing a workpiece.

The workpiece clamp 322 is used for fixing the workpiece, and the related function of pitch changing is realized by the sliding seat 321. When the sliding seats 321 are abutted against each other, the pitch assembly 3 is in the first state, so that the function of the driving cylinder 2 is only used for driving, and the pitch and the movement precision are not affected.

In the sliding fit of the sliding seat 321, referring to an embodiment, the cross-sectional shape of the sliding seat 321 is a convex shape, the cross-sectional shape of the first guide rail 31 is a C shape, and the opening side edges are turned over to overlap and restrain the shoulder 323 of the sliding seat 321.

The first guide rail 31 not only provides a guide in the sliding direction but also prevents the sliding seat 321 from coming off the first guide rail 31 by riding. In a particular product, the bottom surface of the first conduit may be provided by the chassis 1.

In the matching of the transmission rod 33 and the sliding seat 321, referring to an embodiment, a transmission hole 324 is formed on the sliding seat 321, and the transmission hole 324 penetrates through the sliding seat 321 in the sliding direction, and the transmission hole 324 includes a mounting hole 325, a sliding cavity 326 and a through hole 327, which are communicated with each other and have successively smaller diameters; one end of the transmission rod 33 is an expanded end 331, the expanded end 331 is matched with the sliding cavity 326, the other end of the transmission rod is a driving end 332, the driving end 332 penetrates through the hole 327 to be connected with the adjacent sliding seat 321, and the expanded end 331 interacts with the side edge of the through hole 327 to drive the sliding seat 321 to move.

When the transmission rod 33 moves under the guidance of the via hole 327 and the enlarged end 331 is not abutted against the side edge of the via hole 327, the transmission rod 33 can move freely, that is, the preset distance between the adjacent jigs 32 is released; when the enlarged end 331 abuts against the side edge of the through hole 327, the pitch-changing process is completed, and the jig 32 is driven by the transmission rod 33, thereby releasing the preset pitch of the next jig 32.

In the specific structure of the transmission rod 33, referring to an embodiment, the transmission rod 33 is an integral structure and includes an enlarged end 331, a guiding portion 333 and a driving end 332 with successively reduced outer diameters, and the guiding portion 333 and the through hole 327 are mutually matched in size.

The guide 333 and the size of the through hole 327 cooperate to improve the stability of the movement of the transmission rod 33. Thereby improving the warm setting of the motion of the jig 32. The stability degree of the pitch changing process is improved.

In a specific arrangement of the variable pitch, referring to an embodiment, the distance from the driving end 332 to the end surface of the enlarged end 331 is a distance D1 (refer to fig. 4b), and the distances of the transmission rods 33 are equal or unequal.

As will be understood from the above, the distance D1 is actually the free travel of the transmission rod 33, i.e. the predetermined distance between the jigs 32. When the distance between the transmission rods 33 of the jigs 32 is equal, the distance changing result is that the jigs 32 are equidistant; when the distance intervals of the transmission rods 33 of the jigs 32 are not equal, the distance-changing result is that the jigs 32 are not equal. The operator can flexibly adjust the distance D1 between the transmission rods 33, so as to achieve the final pitch-changing effect and reduce the requirement on the driving cylinder 2.

In the manner of mounting the transmission rod 33, referring to an embodiment, the mounting opening 325 is provided with an end cap 328 for closing the transmission hole 324, and the end cap 328 is provided with a force application hole 329 connected with the driving end 332 of the adjacent sliding seat 321.

An end cap 328 is removably mounted to the mounting port 325. The arrangement of the end cap 328 improves the maintainability of the transmission rod 33, and particularly, the force application hole 329 can be conveniently replaced after being worn, rather than the whole jig 32.

In the driving form of the driving cylinder 2, the directly provided driving cylinder 2 may cause an increase in the overall size in the pitch varying direction, which is disadvantageous in terms of arrangement. In one embodiment, the driving cylinder 2 comprises a cylinder 21 mounted on the frame 1 and a piston rod 22 slidably mounted on the cylinder 21, the piston rod 22 is linked with the pitch-variable assembly 3 through a reversing assembly 4, the reversing assembly 4 comprises a second guide rail 41 mounted on the frame 1, a reversing slider 42 slidably mounted on the second guide rail 41, and a reversing connecting rod 43 connected between the reversing slider 42 and the pitch-variable assembly 3; the piston rod 22 is connected with the reversing slider 42 and the piston rod 22 and the reversing connecting rod 43 are positioned on the same side of the reversing slider 42. The arrangement of the reversing slide block 42 realizes the parallel arrangement of the driving cylinder 2 and the variable pitch assembly 3, and the equipment integration level is improved.

In a specific connection manner, referring to an embodiment, the second guide rails 41 are arranged in parallel, the reversing slider 42 is slidably disposed on the second guide rails 41, the reversing connecting rod 43 is connected to the middle of the reversing slider 42, the piston rod 22 is connected to the side edge of the reversing slider 42, and the cylinder 21 is located on one side of the first guide rail 31. The plurality of second guide rails 41 can improve the movement stability of the reversing slider 42, thereby avoiding the situation of movement stagnation.

In the extreme position of the movement process, referring to an embodiment, in the second state, the jigs 32 at the two ends are close to the two ends of the first guide rail 31, and the reversing slider 42 is located at one end of the second guide rail 41 far away from the pitch changing assembly 3.

The technical scheme that this application discloses thereby through the drive pole 33 realize keeping away from each other of tool 32 and get into the second state, paste each other through tool 32 and get into the first state, realize the linkage of a plurality of tools 32 through the drive of single actuating cylinder 2, simple structure is stable, easily arranges.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features. When technical features in different embodiments are represented in the same drawing, it can be seen that the drawing also discloses a combination of the embodiments concerned.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application.

Claims

1. The variable-pitch tool is characterized by comprising a rack, a driving cylinder arranged on the rack, and a variable-pitch assembly linked with the driving cylinder, wherein the variable-pitch assembly comprises a first guide rail and a plurality of jigs arranged on the first guide rail in a sliding manner, the variable-pitch assembly has a first state that each jig is attached to and a second state that each jig is away from a preset distance, each jig is provided with a transmission rod capable of sliding relative to the jig by a preset distance, and each jig is connected to an adjacent jig through the transmission rod in a variable-pitch direction.

2. The pitch-changing tooling of claim 1, wherein the fixture comprises:

3. The pitch-changing tooling as claimed in claim 2, wherein the cross-sectional shape of the sliding seat is convex, the cross-sectional shape of the first guide rail is C-shaped, and the side edges of the opening are turned over oppositely to overlap and restrain the shoulder of the sliding seat.

4. The pitch-changing tool according to claim 2, wherein a transmission hole is formed in the sliding seat and penetrates through the sliding seat in the sliding direction, and the transmission hole comprises an installation opening, a sliding cavity and a through hole which are communicated with each other and the diameters of the installation opening, the sliding cavity and the through hole are sequentially reduced; one end of the transmission rod is an expansion end matched with the sliding cavity, the other end of the transmission rod is a driving end penetrating through the via hole to be connected with the adjacent sliding seat, and the expansion end interacts with the side edge of the via hole to drive the sliding seat to move.

5. The pitch-changing tooling of claim 4, wherein the transmission rod is of an integral structure and comprises an expanding end, a guiding part and the driving end, the outer diameters of the expanding end, the guiding part and the driving end are sequentially reduced, and the guiding part and the through hole are matched with each other in size.

6. The pitch-changing tooling as claimed in claim 4, wherein the distance from the driving end to the end face of the expansion end is a distance, and the distance between the driving rods is equal or unequal.

7. The pitch-changing tooling of claim 4, wherein an end cover for closing the transmission hole is arranged on the mounting opening, and a force application hole connected with the driving end on the adjacent sliding seat is arranged on the end cover.

8. The variable-pitch tool according to claim 1, wherein the driving cylinder comprises a cylinder barrel arranged on the rack and a piston rod assembled on the cylinder barrel in a sliding manner, the piston rod is linked with the variable-pitch assembly through a reversing assembly, and the reversing assembly comprises a second guide rail arranged on the rack, a reversing slider arranged on the second guide rail in a sliding manner and a reversing connecting rod connected between the reversing slider and the variable-pitch assembly; the piston rod is connected with the reversing sliding block, and the piston rod and the reversing connecting rod are located on the same side of the reversing sliding block.

9. The pitch-changing tooling of claim 8, wherein the second guide rails are arranged in parallel, the reversing sliding blocks are arranged on the second guide rails in a sliding manner, the reversing connecting rods are connected with the middle parts of the reversing sliding blocks, the piston rods are connected with the side edges of the reversing sliding blocks, and the cylinder barrel is positioned on one side of the first guide rail.

10. The pitch-changing tooling of claim 9, wherein in the second state, the jigs at the two ends are close to the two ends of the first guide rail, and the reversing slider is located at one end of the second guide rail, which is far away from the pitch-changing assembly.