Multi-material-strip welding feeding mechanism and method
Technical Field
The invention relates to automatic injection molding equipment, in particular to a multi-sheet material belt welding and feeding mechanism and a method.
Background
At present, when accessories of a plurality of electronic products are processed, metal elements on different material belts need to be welded and then injection molded. The material area is convoluteed on the material tape dish, needs accurate location when different material areas weld, need the material area to the propelling movement material loading forward after the welding is accomplished to injection moulding on next step. But in the actual operation process, the material area location is accurate inadequately, leads to welding position to appear the deviation, has reduced the qualification rate.
Disclosure of Invention
The invention overcomes the defects that welding, conveying and positioning of a plurality of material belts are not accurate enough when electronic product accessories are machined, so that welding positions deviate and the qualified rate is reduced, and provides the multi-material-belt welding and conveying mechanism and the method.
In order to solve the technical problems, the invention adopts the following technical scheme: a multi-sheet material belt welding feeding mechanism comprises a positioning seat arranged on a workbench, a laser welding machine, a front positioning feeding assembly and a rear positioning feeding assembly, wherein the laser welding machine is arranged between the front positioning feeding assembly and the rear positioning feeding assembly, a strip-shaped feeding groove with the width matched with the width of a material belt is arranged on the positioning seat, a plurality of material belts are stacked together and arranged in the feeding groove, a plurality of jacks with equal intervals are arranged on both sides of the material belt along the length direction, the jacks on a plurality of material belts are in one-to-one correspondence, the front positioning feeding component and the rear positioning feeding component are respectively provided with a contact pin capable of realizing translation and lifting, the lower end of the contact pin is provided with a needle head matched with the jack, the needle head on at least one of the front positioning feeding component and the rear positioning feeding component is inserted into the jack at any time, and the contact pins on the front positioning feeding assembly and the rear positioning feeding assembly are inserted into the jacks when the laser welding machine welds a plurality of material belts.
When the feeding device works, a plurality of material belts are stacked together and then placed in the feeding groove, and the jacks on the material belts correspond one to one; adjusting the position of the material belt, inserting the needle heads on the front positioning feeding assembly and the rear positioning feeding assembly into the insertion holes on the material belt, and aligning the laser welding head on the laser welding machine to the welding position of the material belt; welding the material belts by a laser welding machine, and welding elements on different material belts together; after welding is completed, the front positioning feeding component drives the material belt to move forwards by half station, and in the process, the rear positioning feeding component completes the actions of upwards moving the needle head to separate from the jack → backwards moving by half station → downwards moving to insert the needle head on the rear positioning feeding component into the jack; then the front positioning feeding component moves upwards to enable the needle head to be separated from the jack, and the rear positioning feeding component drives the material belt to move forwards by half station; and when the rear positioning feeding component drives the material belt to move forwards by half station, the front positioning feeding component completes the actions of rising → moving backwards by half station → moving downwards to enable the needle head of the front positioning feeding component to be inserted into the jack. The welding and feeding operation of the plurality of material belts is realized by repeatedly cycling the actions.
During whole pay-off in-process had the syringe needle to insert the jack all the time, set for the action pace of preceding location pay-off subassembly, back location pay-off subassembly, can realize the accurate pay-off in material area. During welding, the contact pins on the front positioning feeding assembly and the rear positioning feeding assembly are inserted into the jacks, so that the material belt is accurately and reliably positioned. When the electronic product accessories are machined, the multiple material belts are welded, conveyed and positioned accurately, deviation does not occur at the welding position, and the qualified rate of products is guaranteed.
Preferably, half of the feeding paths of two adjacent welding points of the material belt are realized by driving the material belt to move forwards by the front positioning feeding assembly, and the other half of the feeding paths are realized by driving the material belt to move forwards by the rear positioning feeding assembly. Half of the feeding stroke of the material belt is completed by the front positioning feeding assembly, and the other half of the feeding stroke is completed by the rear positioning feeding assembly, so that the pace can be accelerated, and the working efficiency can be improved.
Preferably, the front positioning feeding assembly and the rear positioning feeding assembly respectively comprise a translation piston cylinder, a lifting piston cylinder, a sliding seat, a connecting plate and contact pins, the sliding seat is slidably mounted on the positioning seat, the translation piston cylinder is fixedly mounted on the positioning seat, the lifting piston cylinder is fixedly mounted on the sliding seat, a telescopic rod of the translation piston cylinder is fixedly connected with the sliding seat, the connecting plate is fixedly connected onto a telescopic rod of the lifting piston cylinder, the connecting plate is provided with the two contact pins, and the two contact pins respectively correspond to the insertion holes in two sides of the material belt.
The front positioning feeding assembly and the rear positioning feeding assembly which are arranged in the structure are reliable in operation, the connecting plate is provided with the two contact pins, and the two contact pins correspond to the jacks on the two sides of the material belt respectively, so that the stability of material belt feeding is improved, and deviation is prevented.
Preferably, the bottom surface of the feeding groove and the corresponding position of the contact pin are provided with a strip-shaped avoiding groove, the outer diameter of the needle head is smaller than that of the contact pin, and the needle head can move in the avoiding groove. The avoiding groove provides a good moving space for the needle head, and the interference phenomenon is avoided.
Preferably, a feeding guide groove is formed in the front of the positioning seat, a feeding supporting wheel is arranged behind the positioning seat, the material belt is supported on the feeding supporting wheel, the feeding guide groove is of an upwards extending arc-shaped structure, the feeding supporting wheel is installed on the workbench, and the width of the rear end of the feeding groove is gradually increased towards the direction close to the feeding supporting wheel.
The feeding support wheel plays a good supporting role for the material belt, so that the material belt can enter the feeding groove more smoothly. The width of the rear end of the feeding groove is gradually increased towards the direction close to the feeding supporting wheel, so that the material belt can conveniently enter the feeding groove.
Preferably, a lifting seat capable of lifting is arranged between the front positioning feeding assembly and the rear positioning feeding assembly on the positioning seat, a return spring is arranged between the lifting seat and the bottom surface, a positioning pressing plate is arranged on the lower portion of the lifting seat and can be inserted into the feeding groove, a plurality of buffering pressing heads are arranged on the lower surface of the positioning pressing plate, a front pressing strip and a rear pressing strip are arranged on the side wall of the upper portion of the lifting seat, the front pressing strip is pressed downwards in the downward moving process of the front positioning feeding assembly so as to push the lifting seat to move downwards, the buffering pressing heads are pressed on the material belt, and the front pressing strip can be pushed upwards in the upward moving process of the rear positioning feeding assembly so as to push the lifting seat to move upwards.
Thereby preceding location pay-off subassembly in-process that moves down pushes down preceding layering and promotes the lift seat and move down, makes the buffering pressure head press on the material area, further fixes a position the material area, prevents that the material area from arching but welding position deviation appears. When the front positioning feeding assembly moves forwards, the front positioning feeding assembly is separated from the front pressing strip, and the lifting seat returns upwards under the action of the return spring. When the lifting seat fails and is not returned upwards, the rear positioning feeding assembly moving upwards pushes the rear pressing bar to move upwards so that the lifting seat returns upwards.
Preferably, the positioning seat is provided with a mounting column, the lifting seat is movably sleeved on the mounting column, the upper end of the mounting column is connected with the limiting cover, the return spring is sleeved on the mounting column, and the lifting seat abuts against between the limiting cover and the return spring. The lifting seat is abutted between the limiting cover and the return spring, and is stable and reliable.
Preferably, the buffering pressure head is of a cylindrical structure, and the cylindrical buffering pressure head is rotatably mounted on the positioning pressure plate. The pressure of the cylindrical buffer pressure head on the material belt is proper, and the material belt cannot be damaged due to too large pressure.
Another kind of scheme, the buffering pressure head is the gasbag, and the gasbag includes inlayer utricule, outer utricule, and the inlayer utricule is full of gas, is equipped with the cavity between outer utricule inner wall and the inlayer utricule outer wall, is equipped with between lift seat inner wall and the erection column outer wall and aerifys the chamber, cavity and the chamber intercommunication of aerifing between outer utricule and the inlayer utricule, and the lift seat removes downwards and aerifys the chamber in the chamber and reduces, aerifys the intracavity internal gas pressure and makes outer utricule outwards bulge in the cavity.
The air bag is used as a buffer pressure head, so that the buffer and compression effects are good, and the material belt is not damaged. And gasbag bilayer structure, the lift seat removes downwards and aerifys the cavity of chamber and reduces, aerifys the intracavity gas pressure and makes outer utricule outwards bulge in the cavity and increase the effect that compresses tightly to the material area to make welding process location more accurate reliable, avoid appearing the deviation.
A welding feeding method of a multi-sheet material belt welding feeding mechanism comprises the following steps: a. stacking a plurality of material belts together and then placing the material belts in a feeding groove, wherein the jacks on the material belts are in one-to-one correspondence; b. adjusting the position of the material belt, inserting the needle heads on the front positioning feeding assembly and the rear positioning feeding assembly into the insertion holes on the material belt, and aligning the laser welding head on the laser welding machine to the welding position of the material belt; c. welding the material belts by a laser welding machine, and welding elements on different material belts together; d. after welding is completed, the front positioning feeding component drives the material belt to move forwards by half station, and in the process, the rear positioning feeding component completes the actions of upwards moving the needle head to separate from the jack → backwards moving by half station → downwards moving to insert the needle head on the rear positioning feeding component into the jack; then the front positioning feeding component moves upwards to enable the needle head to be separated from the jack, and the rear positioning feeding component drives the material belt to move forwards by half station; when the rear positioning feeding component drives the material belt to move forwards by half station, the front positioning feeding component completes the actions of rising → moving backwards by half station → moving downwards to insert the needle head of the front positioning feeding component into the jack; the front positioning feeding assembly presses the front pressing bar downwards in the downward movement process so as to push the lifting seat to move downwards, so that the buffer pressing head presses on the material belt, the cavity of the air inflation cavity moves downwards by the lifting seat to be reduced, and the gas in the air inflation cavity is pressed into the cavity so that the outer-layer bag body bulges outwards to increase the pressing effect on the material belt; at the moment, the needle heads on the front positioning feeding assembly and the rear positioning feeding assembly are inserted into the jacks on the material belt, the laser welding head on the laser welding machine is aligned to the welding position of the material belt, and the laser welding machine is started to weld the material belt; f. and d, circulating the step d to realize the welding and feeding operation of the plurality of material belts.
Compared with the prior art, the invention has the beneficial effects that: when the electronic product accessories are machined, the multiple material belts are welded, conveyed and positioned accurately, deviation does not occur at the welding position, and the qualified rate of products is guaranteed.
Drawings
FIG. 1 is a top view of the present invention;
FIG. 2 is a side view of the present invention;
FIG. 3 is a schematic view of the connection structure of the front positioning feed assembly of the present invention;
fig. 4 is a schematic view of a connection structure of the elevating base according to embodiment 1 of the present invention;
fig. 5 is a schematic view of a connection structure of the elevating base according to embodiment 2 of the present invention;
in the figure: 1. the positioning seat, 2, a laser welding machine, 3, a front positioning feeding component, 4, a rear positioning feeding component, 5, a feeding groove, 6, a jack, 7, a pin, 8, a needle, 9, a translation piston cylinder, 10, a lifting piston cylinder, 11, a sliding seat, 12, a connecting plate, 13, a guide rail, 14, a guide groove, 15, an avoiding groove, 16, a feeding guide groove, 17, a feeding supporting wheel, 18, a feeding supporting wheel, 19, a limiting cover plate, 20, a lifting seat, 21, a return spring, 22, a positioning pressing plate, 23, a buffering pressure head, 24, a front pressing strip, 25, a rear pressing strip, 26, a mounting column, 27, a limiting cover, 28, an inner-layer bag body, 29, an outer-layer bag body, 30, an inflation cavity, 31, a mounting hole, 32, a sealing convex ring, 33, a guide column, 34, a ventilation channel, 35, a workbench, 36 and a material strip.
Detailed Description
The technical scheme of the invention is further described in detail by the following specific embodiments in combination with the attached drawings:
example 1: a multi-strip material welding and feeding mechanism (see attached figures 1 to 4) comprises a positioning seat 1, a laser welding machine 2, a front positioning feeding component 3 and a rear positioning feeding component 4 which are arranged on a workbench 35, wherein the laser welding machine is arranged between the front positioning feeding component and the rear positioning feeding component, a strip-shaped feeding groove 5 with the width matched with that of a strip 36 is arranged on the positioning seat, a plurality of strips are stacked together and arranged in the feeding groove, a plurality of jacks 6 with equal intervals are arranged on two sides of each strip along the length direction, the jacks on the strips are in one-to-one correspondence, contact pins 7 capable of realizing translation and lifting are arranged on the front positioning feeding component and the rear positioning feeding component, needle heads 8 matched with the jacks are arranged at the lower ends of the contact pins, and the needle heads on at least one of the front positioning feeding component and the rear positioning feeding component are inserted in the jacks at any time, and the contact pins on the front positioning feeding assembly and the rear positioning feeding assembly are inserted into the jacks when the laser welding machine welds a plurality of material belts.
And half of the feeding routes of two adjacent welding points of the material belt is realized by driving the material belt to move forwards by the front positioning feeding assembly, and the other half of the feeding routes is realized by driving the material belt to move forwards by the rear positioning feeding assembly. The front positioning feeding assembly and the rear positioning feeding assembly respectively comprise a translation piston cylinder 9, a lifting piston cylinder 10, a sliding seat 11, a connecting plate 12 and contact pins, the sliding seat is slidably mounted on the positioning seat, the translation piston cylinder is fixedly mounted on the positioning seat, the lifting piston cylinder is fixedly mounted on the sliding seat, telescopic rods of the translation piston cylinder are fixedly connected with the sliding seat, the connecting plate is fixedly connected onto telescopic rods of the lifting piston cylinder, the two contact pins are mounted on the connecting plate, and the two contact pins respectively correspond to insertion holes in two sides of a material belt. The positioning seat is provided with a guide rail 13, the sliding seat is provided with a guide groove 14 matched with the guide rail, and the sliding seat is connected to the guide rail through the guide groove. The bottom surface of the feeding groove is provided with a strip-shaped avoiding groove 15 corresponding to the contact pin, the outer diameter of the needle head is smaller than that of the contact pin, and the needle head can move in the avoiding groove. The positioning seat the place ahead sets up material loading guide slot 16, and the positioning seat rear sets up feeding supporting wheel 17, and the material area supports on the feeding supporting wheel, and the material loading guide slot is the arc structure that upwards extends, and the feeding supporting wheel is installed on the workstation, and the width of pay-off recess rear end increases to being close to the feeding supporting wheel direction gradually. The end part of the feeding guide groove is provided with a feeding supporting wheel 18, and the material belt is supported on the feeding supporting wheel. The front end of the positioning seat is provided with a limiting cover plate 19 which covers the feeding groove.
A lifting seat 20 capable of lifting is arranged between the front positioning feeding assembly and the rear positioning feeding assembly on the positioning seat, a return spring 21 is arranged between the lifting seat and the bottom surface, a positioning pressing plate 22 is arranged on the lower portion of the lifting seat and can be inserted into the feeding groove, a plurality of buffering pressing heads 23 are arranged on the lower surface of the positioning pressing plate, a front pressing strip 24 and a rear pressing strip 25 are arranged on the side wall of the upper portion of the lifting seat, the front pressing strip is pressed downwards in the downward moving process of the front positioning feeding assembly so as to push the lifting seat to move downwards, the buffering pressing heads are pressed on the material belt, and the front pressing strip can be upwards pushed in the upward moving process of the rear positioning feeding assembly so as to push the lifting seat to move upwards. The positioning seat is provided with a mounting column 26, the lifting seat is movably sleeved on the mounting column, the upper end of the mounting column is connected with a limiting cover 27, the return spring is sleeved on the mounting column, and the lifting seat is abutted between the limiting cover and the return spring. The edge of the connecting plate on the front positioning feeding assembly can be lapped on the upper surface of the front pressing strip and is close to the edge, and the edge of the connecting plate on the rear positioning feeding assembly can be lapped on the lower surface of the rear pressing strip and is close to the edge, so that the lifting seat is driven to descend and ascend. The buffering pressure head is cylindric structure, and the buffering pressure head is made by the rubber material, and cylindric buffering pressure head rotates to be installed on the location clamp plate.
Example 2: a multi-sheet material belt welding feeding mechanism (see attached figures 1, 2, 3 and 5) is similar to embodiment 1 in structure, and mainly different points are that a buffer press head in the embodiment is an air bag, the air bag comprises an inner bag body 28 and an outer bag body 29, the inner bag body is full of air, a cavity is arranged between the inner wall of the outer bag body and the outer wall of the inner bag body, an inflation cavity 30 is arranged between the inner wall of a lifting seat and the outer wall of a mounting column, the cavity between the outer bag body and the inner bag body is communicated with the inflation cavity, the cavity of the inflation cavity is reduced when the lifting seat moves downwards, and the air in the inflation cavity is pressed into the cavity to enable the outer bag body to bulge outwards. The lifting seat is provided with a mounting hole 31, the upper part of the mounting hole is provided with a sealing convex ring 32, the upper end of the mounting column is provided with a guide column 33, the outer diameter of the guide column is smaller than the outer diameter of the mounting column, the sealing convex ring is hermetically sleeved on the guide column, the mounting hole is hermetically sleeved on the mounting column, and a cavity between the inner wall of the mounting hole and the outer wall of the guide column forms an inflation cavity. The positioning pressing plate is provided with a ventilation channel 34, the outer-layer bag body is communicated with the ventilation channel, a ventilation pipe is communicated between the inflation cavity and the ventilation channel, and the ventilation pipe is connected to the lifting seat. The other structure is the same as embodiment 1.
A welding feeding method of a multi-sheet material belt welding feeding mechanism comprises the following steps: a. stacking a plurality of material belts together and then placing the material belts in a feeding groove, wherein the jacks on the material belts are in one-to-one correspondence; b. adjusting the position of the material belt, inserting the needle heads on the front positioning feeding assembly and the rear positioning feeding assembly into the insertion holes on the material belt, and aligning the laser welding head on the laser welding machine to the welding position of the material belt; c. welding the material belts by a laser welding machine, and welding elements on different material belts together; d. after welding is completed, the front positioning feeding component drives the material belt to move forwards by half station, and in the process, the rear positioning feeding component completes the actions of upwards moving the needle head to separate from the jack → backwards moving by half station → downwards moving to insert the needle head on the rear positioning feeding component into the jack; then the front positioning feeding component moves upwards to enable the needle head to be separated from the jack, and the rear positioning feeding component drives the material belt to move forwards by half station; when the rear positioning feeding component drives the material belt to move forwards by half station, the front positioning feeding component completes the actions of rising → moving backwards by half station → moving downwards to insert the needle head of the front positioning feeding component into the jack; the front positioning feeding assembly presses the front pressing bar downwards in the downward movement process so as to push the lifting seat to move downwards, so that the buffer pressing head presses on the material belt, the cavity of the air inflation cavity moves downwards by the lifting seat to be reduced, and the gas in the air inflation cavity is pressed into the cavity so that the outer-layer bag body bulges outwards to increase the pressing effect on the material belt; at the moment, the needle heads on the front positioning feeding assembly and the rear positioning feeding assembly are inserted into the jacks on the material belt, the laser welding head on the laser welding machine is aligned to the welding position of the material belt, and the laser welding machine is started to weld the material belt; f. and d, circulating the step d to realize the welding and feeding operation of the plurality of material belts.
The above-described embodiments are merely preferred embodiments of the present invention, which is not intended to be limiting in any way, and other variations and modifications are possible without departing from the scope of the invention as set forth in the appended claims.