CN113020367A

CN113020367A - Elastic rolling edge covering device

Info

Publication number: CN113020367A
Application number: CN202110574841.3A
Authority: CN
Inventors: 刘昌东; 杨建华; 高飞翔; 胡伟; 戚优健; 袁丽丽; 费春杰; 刘丙星; 刘凯; 孙尧
Original assignee: Changzhou Mentechs Intelligent Equipment Co ltd
Current assignee: Changzhou Mentechs Intelligent Equipment Co ltd
Priority date: 2021-05-26
Filing date: 2021-05-26
Publication date: 2021-06-25
Also published as: CN115401104A

Abstract

The invention relates to an elastic rolling edge covering device which comprises a binding unit, a main body unit and a connecting unit, wherein the binding unit is contacted with the surface of a workpiece and rolls the workpiece, the main body unit is connected with the upper end of the binding unit and provides flexible floating support for the binding unit, and the connecting unit is arranged at the upper end of the main body unit and is used for being fixed on a robot arm; the binding unit comprises a fixed block and a plurality of rollers arranged in the circumferential direction of the fixed block; the rollers are detachably connected with the fixed block; the main body unit comprises a main shaft and a floating head, wherein one end of the floating head is arranged in an inner cavity of the main shaft and can move up and down; the upper end of the fixed block is detachably connected with the floating head. The invention aims to overcome the defects in the prior art and provides the elastic rolling edge covering device with the easily damaged unit convenient to detach and replace.

Description

Elastic rolling edge covering device

Technical Field

The invention relates to the field of automobile processing, in particular to an elastic rolling edge covering device.

Background

As is well known, automobiles are one of the current mainstream vehicles. The hemming process is an essential part in the automobile production and processing process, and the principle is that a robot controls the movement of a hemming tool according to a preset program and a preset track, and a component is hemmed according to a corresponding program. The process has many advantages for large-scale flow line production, such as low equipment investment cost, easy installation and debugging, long service life of equipment, high-beat production and generality on the shape of a vehicle body part. However, in the existing rolling edge covering equipment for the edge covering process, the working wheel part belonging to a vulnerable unit is inconvenient to detach and replace and the equipment is inconvenient to maintain in the later period. Therefore, it is necessary to design an elastic rolling edge covering device with a easily damaged unit which is convenient to detach and replace.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides the elastic rolling edge covering device with the easily damaged unit convenient to detach and replace.

The technical scheme for realizing the purpose of the invention is as follows: an elastic rolling edge covering device comprises a binding unit, a main body unit and a connecting unit, wherein the binding unit is contacted with the surface of a workpiece and rolls the workpiece, the main body unit is connected with the upper end of the binding unit and provides flexible floating support for the binding unit, and the connecting unit is arranged at the upper end of the main body unit and is used for being fixed on a robot arm; the binding unit comprises a fixed block and a plurality of rollers arranged in the circumferential direction of the fixed block; the rollers are detachably connected with the fixed block; the main body unit comprises a main shaft and a floating head, wherein one end of the floating head is arranged in an inner cavity of the main shaft and can move up and down; the upper end of the fixed block is detachably connected with the floating head; and an automatic glue cleaning device is additionally arranged at the position of the edge rolling end face of the roller corresponding to the last procedure.

Preferably, the outer walls of the main shaft and the floating head are additionally provided with pressure display units; the pressure display unit is arranged in parallel with the main shaft and the axis of the floating head.

Preferably, the longitudinal section of the floating head is I-shaped; an auxiliary groove is formed in the upper end of the floating head; the lower end of the floating head is radially provided with a connecting groove; the side wall of the lower end of the floating head parallel to the direction of the connecting groove body is cut into a plane; locking holes are formed in the two opposite planes in a penetrating mode.

Preferably, the pressure display unit comprises a pressure pointer arranged on the periphery of the main shaft and a scale plate arranged on the floating head; the scale plate is marked with scale lines; the pressure pointer points to the 0 scale mark on the scale plate in the initial state.

More preferably, the scale plate is arranged between the two locking holes on the same plane.

Preferably, the lower half part of the pressure pointer is bent into an inverted L shape, and the tail end of the lower part of the pressure pointer is transversely bent into a flat hook.

Preferably, the fixing block comprises a central body and a protrusion arranged above the central body; the bulge is clamped in the connecting groove and is laterally positioned and locked through the plugging bolt.

More preferably, the connecting unit is a connecting flange; an oil injection nozzle is arranged in the radial direction of the connecting flange; the oil injection nozzle penetrates through the connecting flange internally and is communicated with the inner cavity of the main shaft.

Preferably, the automatic glue cleaning device comprises a base and a scraping blade connected with the base, wherein the base and the scraping blade are integrally formed; the scraping sheet is attached to the end face of the roller edge corresponding to the last process.

Preferably, the plurality of rollers comprise a first roller, a second roller carried on the first roller and a third roller; the second roller is arranged opposite to the first roller; and the third roller is fixed on the upper half section of the fixed block through an external connecting block.

More preferably, the main shaft comprises an outer sleeve, an inner sleeve and a central shaft which are concentrically arranged from outside to inside; a flange is additionally arranged on the lower end surface of the outer sleeve; the upper end of the outer sleeve is connected with the connecting unit; a stroke cavity for the floating head to move up and down is arranged in the inner cavity of the lower section of the outer sleeve; a movable cavity for the central shaft to move up and down is reserved between the upper end of the central shaft and the inner sleeve; the center of the central shaft is downwards sunken to form an accommodating groove for accommodating a spring; the connecting unit axially limits the spring in the accommodating groove.

After the technical scheme is adopted, the invention has the following positive effects: the binding unit is connected with the floating head in a lateral fixing mode, so that the binding unit is convenient to disassemble, assemble, replace and maintain subsequently; in addition, the pressure display unit additionally arranged on the outer sides of the main shaft and the floating head can be used for an operator to intuitively acquire the pressure applied by the binding unit during working; in addition, the outer connecting block is parallel to the axial adjustable structure of the third roller, so that the distance can be adjusted according to the requirement to process workpieces meeting different distance requirements.

Drawings

In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the present disclosure taken in conjunction with the accompanying drawings, in which

FIG. 1 is an overall perspective view of the present invention;

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

FIG. 3 is a longitudinal cross-sectional view of the present invention;

FIG. 4 is a front view of the present invention;

FIG. 5 is a first perspective, stereotactic view of the present invention;

FIG. 6 is a schematic view of the nozzle arrangement of the present invention;

FIG. 7 is a view showing the layout of the automatic glue removing device according to the present invention;

fig. 8 is a side view of the automatic glue removing device of the present invention.

The reference numbers in the drawings are as follows: the automatic gluing device comprises a binding unit 100, a fixed block 110, a central body 111, a protrusion 112, a through hole 113, a stop bolt 114, a roller 120, a first roller 121, a second roller 122, a third roller 123, an external connecting block 130, a main body unit 200, a main shaft 210, an external sleeve 211, a central shaft 213, a rib 214, a stroke cavity 215, a floating head 220, an auxiliary groove 221, a connecting groove 222, a plane 223, a locking hole 224, a connecting unit 300, a pressure display unit 400, a pressure pointer 410, a flat hook 411, a scale plate 420, a grease nipple 500, an automatic gluing device 600, a base 610 and a wiper 620.

Detailed Description

(example 1)

Referring to fig. 1 and 2, the present invention includes a binding unit 100 contacting and rolling a surface of a workpiece, a body unit 200 connected to an upper end of the binding unit 100 and providing a flexible floating support to the binding unit 100, and a connection unit 300 mounted to an upper end of the body unit 200 and fixed to an arm of a robot; the method is characterized in that: the binding unit 100 includes a fixing block 110 and a plurality of rollers 120 arranged in a circumferential direction of the fixing block 110; the rollers 120 are detachably connected with the fixed block 110; the main body unit 200 comprises a main shaft 210 and a floating head 220, one end of which is arranged in the inner cavity of the main shaft 210 and can move up and down; the upper end of the fixed block 110 is detachably connected with the floating head 220.

(example 2)

Referring to fig. 2, in this embodiment, on the basis of embodiment 1, it is preferable that a pressure display unit 400 is additionally installed on the outer walls of the main shaft 210 and the floating head 220; the main shaft 210 and the floating head 220 are coaxially arranged; the pressure display unit 400 is disposed parallel to the axial centers of the main shaft 210 and the floating head 220. The pressure display unit 400 functions to facilitate the operator to monitor the pressure more intuitively.

In the present embodiment, more specifically, referring to fig. 2, the pressure display unit 400 includes a pressure pointer 410 which is lockingly mounted on the outer circumference of the main shaft 210 by a bolt, and a scale plate 420 which is mounted on the floating head 220; the scale plate 420 is marked with scale lines; the pressure pointer 410 points to a "0" scale line on the scale plate 420 in an initial state, which is a state in which the binding unit 100 is not applied with force.

In the present embodiment, more specifically, see fig. 2, the scale plate 420 is arranged between two locking holes 224 on the same plane 223 by screw assistance; cutting the sidewall of the lower end of the floating head 220 into the flat surface 223 helps to fix the scale plate 420, and prevents the sidewall of the floating head 220 from being bent in order to attach the scale plate 420 to the sidewall of the floating head 220 in an arc state.

In this embodiment, more specifically, as shown in fig. 4, the lower half of the pressure pointer 410 is bent into an inverted L shape, the root of the pressure pointer 410 is locked and fixed on the outer circumferential surface of the spindle 210 through a bolt, and since there is a radial difference between the outer diameter of the spindle 210 and the plane 223, in order to make an operator more intuitively and accurately read the pressure index from the scale plate 420, the lower half of the pressure pointer 410 is bent into the inverted L shape, so that the pressure pointer 410 can be close to the scale plate 420 at a short distance, thereby avoiding the problem of reading error caused by the distance between the two being far; the lower end of the pressure pointer 410 is transversely bent to form a flat hook 411, that is, the whole of the flat hook 411 is parallel to the plane 223 and the flat hook 411 points to be parallel to the scale marks on the scale plate 420.

More specifically, in the present embodiment, as shown in fig. 3, the longitudinal section of the floating head 220 is I-shaped; an auxiliary groove 221 is formed in the upper end of the floating head 220; the lower end of the floating head 220 is radially provided with a connecting groove 222; a threaded hole is vertically and upwards formed in the connecting groove 222; the side wall of the lower end of the floating head 220 parallel to the direction of the groove body of the connecting groove 222 is cut into a plane 223; two opposite planes 223 are provided with locking holes 224.

More specifically in this embodiment, referring to fig. 5, the fixing block 110 includes a central body 111 and a protrusion 112 disposed above the central body 111; the projection 112 is complementary in shape and size to the attachment slot 222; the bulge 112 is provided with a through hole 113; the through hole 113 and the locking hole 224 are coaxial; the protrusion 112 is snapped into the attachment slot 222 and is laterally captured and locked by the tuck bolt 114. In the prior art, the connection between the fixing block 110 and the lower end of the main shaft 210 is a locking connection in parallel to the axial direction, i.e., a locking connection in the vertical direction, because the connection gap between the fixing block 110 and the lower end of the main shaft 210 is small, the installation in the vertical direction is not favorable for the installation and the disassembly of the fixing block 110 and the lower end of the main shaft 210, and the problem that the fixing block 110 for mounting wearing parts needs to be solved urgently is solved. In addition, in the prior art, the positioning is carried out by locking four peripheral bolts and adding two central positioning pins, and in the connection mode, when lateral stress is applied, the bolts are smaller than bolt holes, so that displacement can be generated, and in the working process, the long-time lateral stress can cause the fracture of the positioning pins, the bolts slide teeth, and the service life of equipment and the working precision are seriously influenced; in addition, in the conventional connecting structure, the floating head 220 is the main stress point in the binding process. In the embodiment, the positioning and locking mode is performed by plugging and bolting, which reduces the stress of the floating head 220 and transfers the stress to the protrusion 112 and the connecting groove 222, thereby avoiding the problems in the prior art; in addition, the locking function of the plug bolt 114 can also avoid the problem of loosening of the detachable structure joint caused by long-time vibration, thereby improving the mechanical strength of the detachable structure joint.

(example 3)

Referring to fig. 6, in this embodiment, on the basis of embodiment 2, preferably, the connection unit 300 uses a connection flange, and mainly fixes the main unit 200 carrying the binding unit 100 to the robot arm. An oil injection nozzle 500 is arranged in the radial direction of the connecting flange; the oil injection nozzle 500 penetrates through the connecting flange inwards and is communicated with the inner cavity of the main shaft 210, the oil injection nozzle 500 can be connected with an oil supply device outwards, when the oil supply device butts against the oil injection nozzle 500, an oil injection channel is opened, lubricating oil can be added into the inner cavity of the main shaft 210 at the moment, a lubricating effect can be achieved on the inner cavity of the main shaft 210, lubricating oil is prevented from being added through a dismounting mode, and working precision is guaranteed. Lubricating oil is added for maintenance in a traditional repeated disassembly mode, so that the positioning hole and the positioning pin are abraded or stressed and deformed, the precision is lost, and the performance of a product is unstable; in addition, the traditional maintenance mode is operated once, and 30-60 minutes is expected, but the technical scheme adopted by the invention can complete maintenance in only 1 minute, so that the maintenance time is greatly shortened, and the labor cost and the maintenance difficulty are reduced.

(example 4)

Referring to fig. 7 and 8, in this embodiment, on the basis of embodiment 3, preferably, an automatic glue cleaning device 600 is additionally installed at the position of the edge rolling end face of the roller 120 corresponding to the last process.

More specifically, in the present embodiment, the automatic glue removing device 600 includes a base 610 and a scraping blade 620 connected to the base 610, wherein the base 610 and the scraping blade 620 are integrally formed; the scraping blade 620 is attached to the edge-rolled end surface of the roller 120 corresponding to the last process.

More specifically, the roller 120 corresponding to the last process may be a right-angle roller or an oblique roller, in this embodiment, the oblique roller is taken as an example, and the blade 620 is disposed to be attached to the edge-rolling end surface of the roller 120. The existing operation method is that no automatic glue cleaning device 600 is provided, after the last edge rolling procedure is finished, glue between vehicle parts directly overflows after being extruded, and is stained on the vehicle parts along with the rollers 120, and after the edge rolling is finished, each vehicle part is wiped and removed by workers, so that time and labor are wasted; after the automatic glue cleaning device 600 is additionally installed, glue attached to the roller 120 is scraped through the scraping blade 620, so that the glue on the roller 120 is prevented from being stained on a vehicle part, manual work is not needed to clean each vehicle part after the last edge rolling process is completed, only one scraping blade 620 is needed to be cleaned every week, and the workload is reduced to a great extent.

More specifically, in this embodiment, the scraping blade 620 is made of a metal material, and the metal material is softer than the material of the roller 120, so that the scraping blade 620 is prevented from scraping the edge rolling end surface of the roller 120.

More specifically, in the present embodiment, referring to fig. 3 and 5, the plurality of rollers 120 includes a first roller 121, a second roller 122 mounted on the first roller 121, and a third roller 123; the first roller 121 is in bearing connection with the fixed block 110 and the first roller 121 is arranged at the lower half section of the fixed block 110; the second roller 122 is installed opposite to the first roller 121 by a bolt; the third roller 123 is fixed on the upper half section of the fixing block 110 through the external connecting block 130, the third roller 123 is in bearing connection with the external connecting block 130, and the external connecting block 130 is fixed on the upper half section of the fixing block 110 through a bolt.

More specifically in this embodiment, see fig. 3, the spindle 210 comprises an outer sleeve 211 concentrically arranged from outside to inside and a central shaft 213; a rib 214 is additionally arranged on the lower end surface of the outer sleeve 211, the rib 214 is connected with the outer sleeve 211 through a bolt, and the inner diameter of the rib 214 is smaller than the outer diameter of the upper end of the floating head 220; the upper end of the outer sleeve 211 is connected with the connection unit 300; a stroke cavity 215 for the floating head 220 to move up and down is arranged in the inner cavity of the lower section of the outer sleeve 211. More specifically, a stroke chamber 215 is formed between the outer sleeve 211 and the central shaft 213 at the upper end of the rib 214; the upper end of the floating head 220 is placed in the stroke cavity 215; the lower end of the central shaft 213 is placed in the auxiliary groove 221 and is locked and fixed by a bolt matching with a threaded hole; the connection unit 300 is lockingly connected with the outer sleeve 211 by means of bolts.

The working principle of the invention is as follows: mounting, namely clamping the protrusion 112 into the connecting groove 222 and locking and fixing the protrusion by using the plugging bolt 114; mounting the roller 120, wherein the first roller 121 is in bearing connection with the central body 111, and the two ends of the first roller are additionally provided with limiting structures, the specific limiting structures can refer to the existing structures, and the third roller 123 is connected to the central body 111 through an external block 130; in the initial state, the pressure pointer 410 points to the scale line of '0', the whole elastic rolling and edge covering device is connected to the robot arm through the connecting unit 300, the control center sends a control instruction to drive the robot arm, the robot arm can drive the elastic rolling and edge covering device to perform edge rolling operation on a workpiece according to a preset path, and the pressure applied in the edge rolling process can be directly displayed through the pressure display unit 400.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An elastic rolling and hemming device comprises a hemming unit (100) which is in contact with the surface of a workpiece and performs rolling on the workpiece, a main body unit (200) which is connected with the upper end of the hemming unit (100) and provides flexible floating support for the hemming unit (100), and a connecting unit (300) which is arranged at the upper end of the main body unit (200) and is used for being fixed on a robot arm; the method is characterized in that: the binding unit (100) comprises a fixed block (110) and a plurality of rollers (120) arranged in the circumferential direction of the fixed block (110); the rollers (120) are detachably connected with the fixed block (110); the main body unit (200) comprises a main shaft (210) and a floating head (220) with one end arranged in the inner cavity of the main shaft (210) and capable of moving up and down; the upper end of the fixed block (110) is detachably connected with the floating head (220); and an automatic glue cleaning device (600) is additionally arranged at the edge rolling end face of the roller (120) corresponding to the last procedure.

2. The elastic roll hemming device according to claim 1, wherein: the outer walls of the main shaft (210) and the floating head (220) are additionally provided with a pressure display unit (400); the pressure display unit (400) is arranged in parallel to the axes of the main shaft (210) and the floating head (220).

3. The elastic roll hemming device according to claim 2, wherein: the pressure display unit (400) comprises a pressure pointer (410) arranged on the periphery of the main shaft (210) and a scale plate (420) arranged on the floating head (220); the scale plate (420) is marked with scale lines; the pressure pointer (410) points to the 0 scale mark on the scale plate (420) in the initial state.

4. The elastic roll hemming device according to claim 3, wherein: the lower half part of the pressure pointer (410) is bent into an inverted L shape, and the tail end of the lower part of the pressure pointer (410) is transversely bent into a flat hook (411).

5. The elastic roll hemming device according to claim 1, wherein: the longitudinal section of the floating head (220) is I-shaped; an auxiliary groove (221) is formed in the upper end of the floating head (220); the lower end of the floating head (220) is radially provided with a connecting groove (222); the side wall of the lower end of the floating head (220) parallel to the direction of the groove body of the connecting groove (222) is cut into a plane (223); locking holes (224) are formed in the two opposite planes (223) in a penetrating mode.

6. The elastic roll hemming device according to claim 5, wherein: the fixing block (110) comprises a central body (111) and a bulge (112) arranged above the central body (111); the protrusion (112) is clamped in the connecting groove (222) and is laterally positioned and locked through the plugging bolt (114).

7. The elastic roll hemming device according to any one of claims 1 to 6 wherein: the connecting unit (300) is a connecting flange; an oil injection nozzle (500) is arranged in the radial direction of the connecting flange; the oil injection nozzle (500) penetrates through the connecting flange inwards and is communicated with the inner cavity of the main shaft (210).

8. The apparatus of claim 7, wherein: the automatic glue cleaning device (600) comprises a base (610) and a scraping blade (620) connected with the base (610), wherein the base (610) and the scraping blade (620) are integrally formed; the scraping blade (620) is attached to the edge rolling end face of the roller (120) corresponding to the last process.

9. The apparatus of claim 7, wherein: the rollers (120) comprise a first roller (121), a second roller (122) carried on the first roller (121) and a third roller (123); the second roller (122) is arranged opposite to the first roller (121); the third roller (123) is fixed on the upper half section of the fixed block (110) through an external block (130).