CN112917075A

CN112917075A - Positioning pin switching mechanism

Info

Publication number: CN112917075A
Application number: CN202010271681.0A
Authority: CN
Inventors: 程方威
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-07
Filing date: 2020-04-07
Publication date: 2021-06-08

Abstract

The invention discloses a positioning pin switching mechanism, and relates to the technical field of welding fixtures. The device comprises a base, wherein a motor rotary table is arranged in the middle of one side of the base, a base plate is installed on the motor rotary table, installation hole sites are reserved in four directions of a vehicle-type structure surface installed on the base plate, a plurality of XYZ three-direction adjustable switching parts are installed on the base plate through the installation hole sites, and positioning pins are installed on the switching parts. The invention realizes the problem that the positioning pin of the white body can not be shared by multiple vehicle types, provides the reference for vehicle type switching for other supporting and positioning on the welding main line production line of the white body, and has guiding significance for the modularized flexible production line in the future; the accuracy of the rotary table is guaranteed, so that the accuracy of the tool fixture is guaranteed, and the welding quality is guaranteed.

Description

Positioning pin switching mechanism

Technical Field

The invention belongs to the technical field of welding fixtures, and particularly relates to a positioning pin switching mechanism.

Background

The present switching form of thread dowel pin all is standard hinge upset form, and dowel pin installs on the pressure arm, drives the pressure arm on the hinge through the piston rod of cylinder, realizes that the pressure arm is rotatory in hinge mount department to guarantee that each motorcycle type realizes the dowel pin and switches, this connection roughly needs following part: the three connecting adjusting blocks, the pressing arm, the air cylinder, the positioning pin, the vertical plate and the hinge plate form a standard structure, and each positioning pin is of the structure, so that when vehicle types are increased, the structure needs to be increased, the positioning space of each station at the lower part of a white vehicle body is limited, and the structures among the vehicle types cannot interfere with each other, so that when an old line body is put into a new vehicle type, the difficulty is particularly high regardless of structural design or field equipment placement.

The defect of the prior art is that the main line locating pin switching mechanism cannot realize the sharing condition of multiple vehicle types, particularly more than four vehicle types, and the standard structure of the prior art is adopted, so that the field construction and the reconstruction are difficult.

An effective solution to the problems in the related art has not been proposed yet.

Disclosure of Invention

The present invention provides a detent pin switching mechanism to overcome the above-mentioned technical problems of the related art.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to a positioning pin switching mechanism which comprises a base, wherein a motor rotary table is arranged in the middle of one side of the base, a base plate is arranged on the motor rotary table, mounting hole sites are reserved in four directions of a vehicle-type structure surface of the base plate, three groups of mounting hole sites are reserved on each surface, a plurality of XYZ three-direction adjustable switching parts are mounted on the base plate through the mounting hole sites, and positioning pins are mounted on the switching parts.

Further, for the switching part, the switching part includes a plurality of connecting blocks, wherein at least two right-angle connecting blocks are included, wherein each connecting block is provided with two rows of adjusting through holes arranged in parallel, the number of the through holes is 4-8, and the adjusting through holes are used for adjusting the relative distance between the connecting blocks connected with each other.

Further, switching part is including connecting block one, the one end of connecting block one is installed on the installation hole site that the basal disc was reserved, the one end that the connecting block other end has connecting block two through the draw-in groove cooperation, the two other ends of connecting block have the one end of connecting block three through the draw-in groove cooperation, the other end of connecting block three has the one end of connecting block four through the draw-in groove cooperation, install the shop bolt on the other end of connecting block four, be provided with the adjusting shim between every connecting block interconnect's the draw-in groove, wherein connecting block two and connecting block three are the right angle connecting block.

Furthermore, the adjusting shim is E-shaped and is assembled in a clamping groove between the connecting blocks, and the connecting blocks are fastened by at least two pins penetrating through a neutral position part of the E-shaped adjusting shim.

Further, three groups of mounting hole sites are reserved on each face of the base plate in four directions, so that 3 vehicle type positions can be positioned, and 12 vehicle type positions can be positioned by the base plate.

Further, the back of the pin cylinder body where the locating pin is located is provided with an inductor support, the inductor support is an L-shaped bending piece, and a large inductor for detecting the plate of the vehicle body is installed on the inductor support.

Further, the locating pin on each switching part corresponds to one vehicle type and is switched by 90 degrees with the standard vehicle type part of the previous vehicle type.

Furthermore, install the detection stick on the base plate, install the inductor support on the base, install at least one small size inductor on the inductor support, the small size inductor with detect the stick position and correspond.

The invention has the following beneficial effects:

1. the invention mainly aims to improve the switching mode of the positioning pins, a turnover hinge mechanism is not used, a motor is used for driving the rotating platform to realize turnover switching, each vehicle type uses a standard structure, the structure only needs one positioning pin and three connecting and adjusting blocks, when other vehicle types need to be added, the rotating platform only needs to rotate for 90 degrees, 3 vehicle type positions are reserved in each switching position direction, namely 12 vehicle type positions are reserved on one motor rotating platform, four pin belt surfaces corresponding to the white vehicle body lower body are positioned by using four motor rotating platforms, and all the white vehicle body lower body positioning holes can be basically met. By adopting the modular mechanism, the main line is simpler and more flexible to transform.

2. The switching of the positioning pin at any position on the main line can be met by adopting the motor rotary table, the reserved mounting hole position on the base plate and a standard three-way adjusting and connecting mechanism.

3. The problem that the body-in-white locating pin cannot be shared by multiple vehicle types is solved, reference for vehicle type switching is provided for other supporting and locating on a body-in-white welding main line production line, and the method has guiding significance for a modularized flexible production line in the future.

4. The invention ensures the precision of the rotary table, thereby ensuring the accuracy of the tool fixture and the welding quality.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a perspective view of the present invention;

FIG. 3 is an enlarged view of the structure at A of the present invention;

FIG. 4 is an enlarged view of the structure of the present invention at B;

fig. 5 is a front view of the base plate of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a base; 2. a motor turntable; 3. connecting blocks; 4. a hand bolt base; 5. a hand bolt; 6. a hand bolt handle; 7. an inductor support; 8. a small sensor; 9. a probing rod; 10. a base plate; 11. a first connecting block; 12. a second connecting block; 13. adjusting the gasket; 14. connecting blocks III; 15. connecting blocks IV; 16. positioning a pin; 17. a large size inductor; 18. an inductor support; 19. connecting a block V; 20. connecting a block six; 21. a seventh connecting block; 22. connecting a block eight; 23. a switching unit.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

Referring to fig. 1-5, the invention relates to a positioning pin switching mechanism, which comprises a base 1, wherein a motor turntable 2 is arranged in the middle of one side of the base 1, the base 1 is formed by welding steel plates with the thickness of 25mm into an I shape, the width of a middle clamping plate is at least ensured to be 280mm, the phenomenon that the installed motor turntable 2 floats is avoided, the distance from the center of the motor turntable 2 to the base 1 is ensured to be about 600mm by a hole site for installing the motor turntable 2, the interference between part equipment on the motor turntable 2 and the surface of the base 1 during vehicle type switching is avoided, lightening holes are uniformly distributed on the base 1, the distance between each lightening hole is at least ensured to be larger than 70mm, the influence on the rigidity of the whole base 1 is avoided, a circular groove with the diameter of 80mm is arranged in the center for installing a turntable motor, and the distribution of equipment on a; the motor turntable 2 is provided with a base plate 10, mounting hole sites are reserved in four directions of a vehicle type structure surface mounted on the base plate 10, at least one XYZ three-direction adjustable switching part 23 is mounted on the base plate 10 through the mounting hole sites, and each switching part 23 is provided with a positioning pin 16.

In one embodiment, for the switching part 23, the switching part 23 includes a plurality of connecting blocks, including a first connecting block 11, one end of the first connecting block 11 is mounted on the mounting hole reserved in the base plate 10, the other end of the first connecting block 11 is fitted with one end of a second connecting block 12 through a clamping groove, the other end of the second connecting block 12 is fitted with one end of a third connecting block 14 through a clamping groove, the other end of the third connecting block 14 is fitted with one end of a fourth connecting block 15 through a clamping groove, a positioning pin 16 is mounted on the other end of the fourth connecting block 15, and an adjusting shim 13 is arranged between the clamping grooves connected with each other by each connecting block, so that the adjusting shim 13 has a width of 50X50mm, the width of the clamping groove is greater than that of the adjusting shim 13, thereby ensuring detachability of the shim, and the adjusting shim; each connecting block is provided with two rows of adjusting through holes which are arranged in parallel, the number of the through holes is 4-8, the adjusting through holes are used for adjusting the relative distance between the connecting blocks which are connected with each other, and the connecting blocks are fastened by at least two pins penetrating through the neutral position parts of the E-shaped adjusting gaskets; .

In one embodiment, the switch 23 includes at least two right-angle connecting blocks, specifically, the second connecting block 12 and the third connecting block 14 are arranged as right-angle connecting blocks, and the XYZ three-way adjustment of the switch 23 is realized by arranging the second connecting block 12 and the third connecting block 14 composed of right-angle connecting blocks to cooperate with the first connecting block 11 and the fourth connecting block 15.

In one embodiment, for the base 1, the base 1 is provided with a connecting block 3 on one side of the motor turntable 2 in a form of 'groove' edge-locking fit, the distance from the base 1 to the bottom plate is about 600mm, the thickness of the connecting block is 20mm, the width of the connecting block is 100mm, the strength of the whole body after the hand bolt base 4 is installed is ensured, one side of the motor turntable 2 is provided with the hand bolt base 4, the hand bolt base 4 is also connected with the connecting block 3 in a form of 'groove' edge-locking fit, a bolt circular hole is formed in the hand bolt base 4, a rectangular bolt adjusting groove is formed in the side surface of the circular hole, the bolt adjusting groove is a rectangle of 20X15mm, the bottom end part of the bolt adjusting groove is provided with a first bolt limiting hole on the left side and a second bolt limiting hole on the right side, the hand bolt 5 is inserted into the bolt circular hole, a hand bolt handle 6 for switching the hand bolt 5 to extend out and retract, when the hand bolt handle 6 is matched with the first bolt limiting hole, the hand bolt 5 is in an extending state, and the hand bolt 5 is matched with the pin hole 101 on the base plate 10; when the hand bolt handle 6 is matched with the second bolt limiting hole, the hand bolt 5 is in a retraction state; hand bolt 5 needs 24mm of diameter to guarantee intensity, and the function of hand bolt 5 is the safety bolt of being convenient for revolving stage motor to maintain, guarantees that equipment can stall after outage or trouble.

In an embodiment, for the base plate 10, mounting hole sites are reserved in four directions on a vehicle type switching surface of the base plate 10, three groups of mounting hole sites are reserved on each surface, positioning of 3 vehicle type sites can be achieved respectively, and each group of mounting hole sites is in a form that two pairs of pin holes with a diameter of 10mm and three pairs of screw holes of M10 are arranged at intervals, and can be suitable for connection of connecting blocks with various sizes; 6 through holes with the diameter of 14mm are evenly distributed in the center of the base plate 10 at 360 degrees, two pin holes with the diameter of 10mm are connected with the pin holes of the motor rotary table 2, a circular groove with the diameter of 90mm needs to be dug in the center of the base plate 10, and the ground equipment and the rotary table can be conveniently distributed in a piping mode. And four pin holes 101 with the diameter of 25mm are uniformly distributed at the matching position of the base plate 10 and the hand bolt 5 installed on the base 1 by 90 degrees, so that the matching precision with the hand bolt 5 is ensured, a 15mm stepped waist-shaped groove 102 is also required to be formed near the upper part of each pin hole 101, the installation hole position of a reserved part is avoided, the detection rod 9 is installed, and the distance between the waist-shaped groove 102 and the pin holes 101 in four directions is gradually increased to meet different detection requirements.

In one embodiment, for the positioning pin 16, an inductor bracket 18 is arranged on the back surface of the pin cylinder body where the positioning pin 16 is located, the inductor bracket 18 is an L-shaped bent piece, a large inductor 17 for detecting a vehicle body panel is mounted on the inductor bracket 18, and the large inductor 17 is a photoelectric sensor.

In one embodiment, for the switching part 23, the dowel pins 16 on the switching part 23 correspond to a vehicle type and are switched by 90 degrees with a standard vehicle type part of the previous vehicle type.

In one embodiment, for the switching part 23, the switching part 23 comprises a fifth connecting block 19, a sixth connecting block 20, a seventh connecting block 21 and an eighth connecting block 22, and adjacent connecting blocks are matched and connected by a clamping groove, so that the positioning pin 16 of another vehicle type is arranged on the switching part and is switched by 90 degrees with the standard vehicle type part of the previous vehicle type.

In one embodiment, for the above base disc 10, the base disc 10 is provided with a detection rod 9, the base 1 is provided with an inductor support 7, the inductor support 7 is provided with at least one small inductor 8, the small inductor 8 corresponds to the detection rod 9 in position, so as to feed back an external PLC signal after the motor turntable 2 is successfully switched by 90 degrees, in addition, the diameter of the detection rod 9 is 15mm, two step surfaces are milled at one end assembled with the base disc 10, so that the detection rod 9 is conveniently clamped at the waist-shaped groove of the base disc 10, the small inductor 8 is arranged on the inductor support 7, the inductor support 7 is welded by using a 5mm bending piece, the inductor support 7 is arranged on the base 1, 4 waist-shaped holes with the diameter of 9mm are arranged at the bottom, the left-right adjustable allowance is 10mm, and one side of the small inductor 8 is arranged, need open 4 diameter 18mm waist round holes, guarantee that the adjustable surplus about is 10mm, 4 waist round hole's direction is along the distribution of motor outline, and 4 small-size inductors 8 are the signal that detects feedback revolving stage and switch 90 degrees, and small-size inductor 8 is photoelectric sensor.

In summary, with the above technical solution of the present invention, the operation method of the mechanism is as follows: 1. the method comprises the steps that a PLC obtains a station vehicle type arrangement sequence and counts, when the next vehicle type is judged to be changed, the PLC sends a switching signal to a motor rotary table 2, the motor rotary table 2 starts to rotate, and when the vehicle type position needing to be stopped is reached, the motor rotary table 2 stops rotating; 2. the small-size inductor 8 detects whether the rotary table is switched or not, after the switching is finished, the small-size inductor 8 sends a confirmation signal to the PLC, and the PLC further controls the conveying line to convey the vehicle body to the station; 3. the PLC further controls the lifting roller machine to start descending, the vehicle body falls on a connecting and pairing mechanism where the positioning pins 16 are located, after the large-size sensor 17 on the sensor support detects that the workpiece is in place, pins of the positioning pins 16 extend out of the pin cylinders to hook the plate, and then the welding robot starts welding; 4. after welding, the pin of the positioning pin 16 retracts, the lifting roller machine rises, the vehicle body is separated from the positioning pin 16 for positioning, and the vehicle body is conveyed by the conveying line to enter the next station.

Through the technical scheme, 1, the invention mainly aims to improve the switching mode of the positioning pins, a motor is used for driving the rotary table to realize the turnover switching without using a turnover hinge mechanism, each vehicle type uses a standard structure, the structure only needs one positioning pin and three connecting and adjusting blocks, when other vehicle types need to be added, the rotary table only needs to rotate by 90 degrees, 3 vehicle type positions are reserved in the direction of each switching position, namely 12 vehicle type positions are reserved on one motor rotary table, and four motor rotary tables are used for positioning four pin belt surfaces corresponding to the white vehicle body lower body, so that all the white vehicle body lower body positioning holes can be basically met. By adopting the modular mechanism, the main line is simpler and more flexible to transform.

The above disclosure of the preferred embodiments of the invention is intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A detent pin switching mechanism, comprising a base (1), characterized in that: the utility model discloses a motor rotary table, including base (1), motor rotary table (2), install base plate (10) on motor rotary table (2), the installation hole site is all reserved to four directions of base plate (10) installation motorcycle type structural plane, and all reserves three group's installation hole sites on every, a plurality of XYZ three-way adjustable switching portion (23) are installed through the installation hole site in base plate (10), install dowel (16) on switching portion (23).

2. The dead bolt switching mechanism according to claim 1, wherein said switching portion (23) comprises a plurality of connecting blocks, at least two right-angle connecting blocks, wherein each connecting block is provided with two rows of adjusting through holes arranged in parallel, the number of the through holes is 4-8, and the adjusting through holes are used for adjusting the relative distance between the connecting blocks connected with each other.

3. The dowel switching mechanism of claim 2, wherein the switching portion (23) comprises a first connecting block (11), one end of the first connecting block (11) is installed on an installation hole reserved in the base plate (10), the other end of the first connecting block (11) is matched with one end of a second connecting block (12) through a clamping groove, the other end of the second connecting block (12) is matched with one end of a third connecting block (14) through a clamping groove, the other end of the third connecting block (14) is matched with one end of a fourth connecting block (15) through a clamping groove, a dowel (16) is installed on the other end of the fourth connecting block (15), an adjusting gasket (13) is arranged between the clamping grooves of each connecting block, and the second connecting block (12) and the third connecting block (14) are right-angle connecting blocks.

4. A mechanism according to claim 3, wherein the spacer (13) is "E" shaped and fits into a slot between the connecting blocks, the connecting blocks being secured together by at least two pins passing through the free portion of the "E" spacer.

5. The position pin switching mechanism as claimed in claim 4, wherein three sets of mounting holes are reserved on each face of the base plate (10) in four directions, so that 3 vehicle model positions can be positioned, and 12 vehicle model positions can be positioned on the base plate.

6. The positioning pin switching mechanism according to claim 5, wherein an inductor bracket (18) is arranged on the back of the pin cylinder body where the positioning pin (16) is located, the inductor bracket (18) is an L-shaped bent piece, and a large inductor (17) for detecting a vehicle body plate is arranged on the inductor bracket (18).

7. The dowel switching mechanism of claim 5, wherein the dowel (16) on each switching portion (23) corresponds to a vehicle type and is switched at 90 degrees to a standard vehicle type portion of a previous vehicle type.

8. A position pin switching mechanism according to claim 6, wherein the base plate (10) is provided with a detection rod (9), the base (1) is provided with an inductor support (7), the inductor support (7) is provided with at least one small inductor (8), and the small inductor (8) corresponds to the detection rod (9).