CN103949759B - Built-in welding wire clamping device - Google Patents
Built-in welding wire clamping device Download PDFInfo
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- CN103949759B CN103949759B CN201410200086.2A CN201410200086A CN103949759B CN 103949759 B CN103949759 B CN 103949759B CN 201410200086 A CN201410200086 A CN 201410200086A CN 103949759 B CN103949759 B CN 103949759B
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- inner chamber
- cylinder body
- master cylinder
- rear end
- hole
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/24—Features related to electrodes
- B23K9/28—Supporting devices for electrodes
Abstract
A kind of built-in welding wire clamping device, comprising: be ring bodies and coaxial drive end bearing bracket, auxiliary cylinder block, front support, auxiliary piston, chuck, Master cylinder body, rear support, main piston and the rear end cap arranged; Rely on auxiliary piston and main piston jointly to chuck effect one power backward, the front end of chuck is shunk, and welding wire obvolvent is clamped.In this built-in welding wire clamping device, for face contacts between chuck with welding wire outer wall, to welding wire clamping action is cohesive force, and is subject to the common thrust of former and later two pistons, so obvolvent dynamics is very large and can not make solder wire deformation.In addition, its profile is revolving body, and radial dimension is very little, is applicable to being arranged in the hollow wrist arm of welding robot using, and take up room little, the arm action installing and using rear welding robot is more flexible.
Description
Technical field
The present invention relates to the welding wire clamping device of welding robot, specifically a kind of built-in welding wire clamping device.
Background technology
The welding wire clamp system that current butt welding machine device people uses is all external air cylinder structure.As shown in Figure 1, this structure is outside clamping cylinder 13 being placed in cable, and the piston movement direction of clamping cylinder 13 is vertical with welding wire 15 direction of motion, relies on the pressure of cylinder to brake to welding wire 15.Because this clamping device relies on the radial load of the linear contact lay of jackscrew 14 end face and welding wire 15 to provide the frictional force clamping welding wire, the clamping force thus provided is limited, and welding wire 15 relatively jackscrew 14 easily slides; And if pressure is excessive, welding wire 15 can be caused to be out of shape, and then to affect wire feed, be unfavorable for welding.In addition, the required installing space of external air cylinder structure is larger, so this welding wire clamping device be not suitable for the welding robot being arranged on wrist hollow type weldering arm on use, and make the fit structure welding arm and welding wire clamping part complicated, occupy more space and dexterity of action is affected.
Summary of the invention
The object of the present invention is to provide and a kind ofly can not make solder wire deformation to welding wire effect with large clamping force, and can be installed on the built-in welding wire clamping device of welding robot hollow wrist.
The present invention solves the technical scheme that its technical problem takes: a kind of built-in welding wire clamping device, comprising: be ring bodies and coaxial drive end bearing bracket, auxiliary cylinder block, front support, auxiliary piston, chuck, Master cylinder body, rear support, main piston and the rear end cap arranged;
The inner chamber of described drive end bearing bracket is divided into two sections from front to back according to the size of internal diameter, and the internal diameter of leading portion inner chamber matches with the external diameter of welding wire, and the internal diameter of back segment is greater than the internal diameter of leading portion and arranges internal thread on the chamber wall of this back segment;
The front end outer wall of described auxiliary cylinder block arranges external screw thread, and is connected with the back segment inner chamber of described drive end bearing bracket;
The inner chamber of described auxiliary cylinder block is divided into four sections from front to back according to the size of internal diameter and footpath, chamber becomes large successively, wherein arranges the first compensated cavity between first two sections, and the internal diameter of described first compensated cavity is less than the internal diameter of the most leading portion inner chamber of described auxiliary cylinder block; The inwall of rearmost end one section of inner chamber of described auxiliary cylinder block arranges internal thread; On the outer wall of described auxiliary cylinder block, the second segment that corresponding described auxiliary cylinder block counts from front to back and the position of the 3rd section of inner chamber arrange the first air inlet, and the diameter of axle of described first air inlet corresponds to second segment inner chamber place;
The outer wall of described front support coordinates with the inner wall sealing described auxiliary cylinder block counting from front to back second segment inner chamber, and the most forward edge of the rear end face of described front support and the first air inlet on described auxiliary cylinder block is alignd; Described front support arranges axial through hole, and the aperture of through hole described in this is consistent with the internal diameter of the first compensated cavity on described auxiliary cylinder block;
The outer wall of described auxiliary piston is divided into three sections from front to back according to the size of external diameter and external diameter becomes large successively: wherein the external diameter of leading portion and this section consistent with the axially extending bore in described front support is from back to front successively through after the first compensated cavity on the through hole of described front support and described auxiliary cylinder block, extend in the inner chamber of the most leading portion of described auxiliary cylinder block, (under the state not passing into gas, namely under reset condition during non-clamping, front end face is alignd with the front end face of described auxiliary cylinder block); The external diameter of interlude is less than the external diameter (under the state not passing into gas, the front end face of described interlude being contacted with the rear end face of described front support) of described front support; The contact internal walls of several 3rd section of cavity from front to back on the outer wall of back segment and described auxiliary cylinder block, the outer wall of the axial medium position of back segment is nested with O type circle, and the axial length of described back segment is less than the axial length of several 3rd section of cavity from front to back on described auxiliary cylinder block; (can in the rear after section, arrange axially extended boss, the external diameter of described boss is less than the external diameter of described back segment, and more preferably greater than the external diameter of interlude); On the relatively described auxiliary cylinder block of rear end face of described back segment, the last side edge-justified calibrations or have forward of the first air inlet certain axially extends; Axis along described auxiliary piston arranges axially extending bore, matches with the external diameter of welding wire in the aperture of through hole described in this;
The outer wall of described Master cylinder body front end and rear end all arranges external screw thread, and the external screw thread that front end is arranged coordinates with the internal thread hole of described auxiliary cylinder block rear end;
The inner chamber of described Master cylinder body is divided into three sections from front to back according to the size in footpath, chamber and footpath, chamber becomes large successively: between leading portion and the inner chamber of interlude, arrange the second compensated cavity, and the internal diameter of described second compensated cavity is less than the internal diameter of described Master cylinder body leading portion inner chamber; On the outer wall of described Master cylinder body, on corresponding described Master cylinder body, the position of two sections of inner chambers arranges the second air inlet below, and the diameter of axle of described second air inlet corresponds to back segment inner chamber place;
The outer wall of described rear support coordinates with the inner wall sealing of interlude inner chamber on described Master cylinder body, and the most forward edge alignment of the second air inlet or at regular intervals forward on the relatively described Master cylinder body of the rear end face of described rear support; On supporting in the rear, axial through hole is set, and the aperture of through hole described in this is consistent with the internal diameter of the second compensated cavity on described Master cylinder body;
The leading portion profile of described chuck is tapered, and bigger diameter end forward, and back segment profile is cylinder;
The front end external diameter of described chuck conical section is greater than the footpath, chamber of leading portion inner chamber on described Master cylinder body, is less than the external diameter of described auxiliary piston back segment simultaneously; The rear end external diameter of described chuck conical section is less than the footpath, chamber of leading portion inner chamber on described Master cylinder body; The external diameter of described chuck shell portion is consistent with the footpath, chamber of leading portion inner chamber on described Master cylinder body;
Axis along described chuck arranges through hole, and this through hole is divided into forward and backward two sections, the aperture of leading portion and welding wire major diameter fit, and the aperture of back segment is greater than the aperture of leading portion and arranges screw thread on the inwall in this back segment aperture; The conical section part of corresponding described chuck, arrange three or four gap of radial communication through hole on chuck on its external wall, and described gap all axially extends;
Described chuck is penetrated in the leading portion inner chamber of described Master cylinder body by its rear end, and the rear end face of the rear end face of described chuck relatively described Master cylinder body leading portion inner chamber is at regular intervals; The front end face of described chuck contacts with the rear end face of described auxiliary piston;
The outer wall of described main piston is divided into four sections from front to back according to the difference of external diameter, and the external diameter being positioned at three sections above becomes large from front to back successively, the external diameter of the one section external diameter that is less than several 3rd section from front to back backmost: wherein the external diameter of most leading portion and this most leading portion consistent with the axially extending bore in described rear support is from back to front successively through after the second compensated cavity on the through hole of described rear support and described Master cylinder body, to extend in the inner chamber of described Master cylinder body leading portion and to be threadedly connected to the back segment of through hole on described chuck; The external diameter counting second segment is from front to back less than the external diameter (under the state not passing into gas, the front end face of second segment described in this being contacted with the rear end face of described rear support) of described rear support; The outer wall of several 3rd section and the contact internal walls of described Master cylinder body back segment cavity from front to back, described in this 3rd section of axial medium position outer wall on be nested with O type circle, and the axial length of the 3rd section described in this is less than the axial length of described Master cylinder body back segment cavity; On the relatively described Master cylinder body of the front end face of the 3rd section described in this, the most forward edge of the second air inlet is at regular intervals backward, and the port of the back segment inner chamber of the relatively described Master cylinder body of the rear end face of the 3rd section described in this is at regular intervals simultaneously; Axis along described main piston arranges axially extending bore, and matches with the external diameter of welding wire in the aperture of this through hole;
Axis along described rear end cap sets gradually connecting through hole and feeding through hole from front to back; The aperture of described connecting through hole is greater than the aperture, front end of described feeding through hole; The rear end outer wall of described Master cylinder body is connected at the nose threads of described connecting through hole; Rearmost one section of outer wall of described main piston is nested with back-moving spring; The rear end face of several 3rd section from front to back on main piston described in the front end in contact of described back-moving spring, the rear end face of connecting through hole described in the rear end in contact of described back-moving spring;
The internal diameter of the feeding through hole on described rear end cap and welding wire major diameter fit; The rear end of described rear end cap connects the welding wire feeder in robot arm.
Further, the rear port of the axially extending bore on described auxiliary piston is set to bell and the large mouth of bell backward.
Further, the rear port of the axially extending bore on described main piston is set to bell and the large mouth of bell backward.
The invention has the beneficial effects as follows: in this built-in welding wire clamping device, for face contacts between chuck with welding wire outer wall, to welding wire clamping action is cohesive force, and is subject to the common thrust of former and later two pistons, so obvolvent dynamics is very large and can not make solder wire deformation.In addition, its profile is revolving body, and radial dimension is very little, is applicable to being arranged in the hollow wrist arm of welding robot using, and take up room little, the arm action installing and using rear welding robot is more flexible.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing welding wire clamping device;
Fig. 2 is structural representation of the present invention;
Fig. 3 is that the axle of drive end bearing bracket in the present invention measures intention;
Fig. 4 is the main TV structure schematic diagram of drive end bearing bracket in the present invention;
Fig. 5 is the left TV structure schematic diagram of drive end bearing bracket in the present invention;
Fig. 6 be in Fig. 4 A-A to cross-sectional view;
Fig. 7 is the cross-sectional view being provided with the auxiliary cylinder block of front support of the present invention;
Fig. 8 is the cross-sectional view of auxiliary piston in the present invention;
Fig. 9 is the cross-sectional view being provided with the Master cylinder body of rear support of the present invention;
Figure 10 is the left TV structure schematic diagram of Master cylinder body in the present invention;
Figure 11 is the cross-sectional view of chuck in the present invention;
Figure 12 is the left TV structure schematic diagram of chuck in the present invention;
Figure 13 is the cross-sectional view of main piston in the present invention;
Figure 14 is the main TV structure schematic diagram of rear end cap in the present invention;
Figure 15 is that the master of rear end cap in the present invention looks cross-sectional view figure;
Figure 16 is the plan structure schematic diagram figure of rear end cap in the present invention;
Figure 17 is the schematic diagram of welding wire and chuck relative movement in the present invention;
Figure 18 is structural representation of the present invention during feeding welding wire;
Figure 19 is that in the present invention, each parts are in the schematic diagram under discrete distribution;
In figure: 1 drive end bearing bracket 2 auxiliary cylinder block 21 first air inlet 3 front support 4 auxiliary piston 5O type circle 6 chuck 7 Master cylinder body 71 second air inlet 8 rear support 9O type circle 10 spring 11 main piston 12 rear end cap 13 clamping cylinder 14 jackscrew 15 welding wire.
Detailed description of the invention
For ease of understanding technical scheme of the present invention, below in conjunction with accompanying drawing, wherein involved technology contents is described further.
In the description of this invention, it should be noted that, orientation or the position relationship of the instruction such as term "front", "rear", " interior ", " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection, can be directly to be connected, and also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
It should be noted that: all inner chambers related in the description of this invention, are cylindrical cavity unless otherwise indicated; In like manner, all outer walls related to, are cylindrical outer wall unless otherwise indicated.
As shown in Fig. 2 to Figure 19,
A kind of built-in welding wire clamping device, comprises and is ring bodies and coaxial drive end bearing bracket 1, auxiliary cylinder block 2, front support 3, auxiliary piston 4, chuck 6, Master cylinder body 7, rear support 8, main piston 11 and the rear end cap 12 arranged.The maximum outside diameter of the maximum outside diameter of described drive end bearing bracket 1, the maximum outside diameter of described auxiliary cylinder block 2, described Master cylinder body 7 and the maximum outside diameter of described rear end cap 12 all consistent.As shown in Fig. 2, Figure 18.
The inner chamber of described drive end bearing bracket 1 is divided into two sections of a, c from front to back according to the size of internal diameter, one section that is wherein positioned at above (internal diameter of leading portion a) inner chamber matches with the external diameter of welding wire 15, and the internal diameter of back segment c is greater than the internal diameter of leading portion a most and arranges internal thread on the chamber wall of this back segment c.As shown in Fig. 2, Figure 19.
The front end outer wall of described auxiliary cylinder block 2 arranges external screw thread, and this male thread portion is connected with the back segment c inner chamber of described drive end bearing bracket 1.As shown in Fig. 2, Fig. 7, Figure 19.
The inner chamber of described auxiliary cylinder block 2 is divided into four sections of d, e, f, g from front to back according to the size of internal diameter and footpath, chamber becomes large successively, wherein first two sections arrange the first compensated cavity between d, e, and the internal diameter of described first compensated cavity is less than the internal diameter of the most leading portion d inner chamber of described auxiliary cylinder block.The inwall of rearmost end one section of g inner chamber of described auxiliary cylinder block 2 arranges internal thread.On the outer wall of described auxiliary cylinder block 2, the position of second segment e and the 3rd section f inner chamber that corresponding described auxiliary cylinder block 2 counts from front to back arranges the first air inlet 21, and the diameter of axle of described first air inlet 21 corresponds to second segment e inner chamber place.As shown in Fig. 2, Fig. 7, Figure 19.
The outer wall of described front support 3 coordinates with the inner wall sealing described auxiliary cylinder block 2 counting from front to back second segment e inner chamber, and the most forward edge of the rear end face of described front support 3 and the first air inlet 21 on described auxiliary cylinder block 2 is alignd.As shown in Fig. 2, Fig. 7, Figure 19.
Described front support 3 arranges axial through hole, and the aperture of through hole described in this is consistent with the internal diameter of the first compensated cavity on described auxiliary cylinder block 2.As shown in Fig. 2, Fig. 7, Figure 19.
The outer wall of described auxiliary piston 4 is divided into three sections of h, i, j from front to back according to the size of external diameter and external diameter becomes large successively: wherein the external diameter of leading portion h and this section consistent with the axially extending bore in described front support 3 is from back to front successively through after the first compensated cavity on the through hole of described front support 3 and described auxiliary cylinder block 2, extend in the inner chamber of the most leading portion d of described auxiliary cylinder block 2, (under the state not passing into gas, namely under reset condition during non-clamping, the front end face of described auxiliary piston 4 is alignd with the front end face of described auxiliary cylinder block 2).The external diameter of interlude i is less than the external diameter (under the state not passing into gas, the front end face of described interlude i being contacted with the rear end face of described front support 3) of described front support 3.The contact internal walls of several 3rd section of f cavity from front to back on the outer wall of back segment j and described auxiliary cylinder block 2.The outer wall of the axial medium position of back segment j is nested with O type circle 5, and the axial length of described back segment j is less than the axial length of several 3rd section of f cavity from front to back on described auxiliary cylinder block 2.In the rear after section j, arrange axially extended boss, the external diameter of described boss is less than the external diameter of described back segment j, and more preferably greater than the external diameter of interlude i.On the relatively described auxiliary cylinder block 2 of rear end face of described back segment j, the last side edge-justified calibrations or have forward of the first air inlet 21 certain axially extends, about 1mm to 3mm.Axis along described auxiliary piston 4 arranges axially extending bore, matches with the external diameter of welding wire in the aperture of through hole described in this, the rear port of this through hole be set to bell and large mouth backward so that welding wire 15 is sent into.As shown in Fig. 2, Fig. 8, Figure 19.
The outer wall of described Master cylinder body 7 front end and rear end all arranges external screw thread, and the external screw thread that Master cylinder body 7 front end is arranged coordinates with the internal thread hole of described auxiliary cylinder block 2 rear end.As shown in Fig. 2, Fig. 9, Figure 10, Figure 19.
The inner chamber of described Master cylinder body 7 is divided into three sections of k, L, m from front to back according to the size in footpath, chamber and footpath, chamber becomes large successively: between leading portion k and the inner chamber of interlude L, arrange the second compensated cavity, and the internal diameter of described second compensated cavity is less than the internal diameter of described Master cylinder body 7 leading portion k inner chamber.On the outer wall of described Master cylinder body 7, on corresponding described Master cylinder body 7, the position of two sections of L, m inner chambers arranges the second air inlet 71 below, and the diameter of axle of described second air inlet 71 corresponds to back segment m inner chamber place.As shown in Fig. 2, Fig. 9, Figure 10, Figure 19.
The outer wall of described rear support 8 coordinates with the inner wall sealing of interlude L inner chamber on described Master cylinder body 7, and the most forward edge alignment of the second air inlet 71 or at regular intervals forward on the relatively described Master cylinder body 7 of the rear end face of described rear support 8, value is at 1mm to 2mm.Support in the rear on 8 and axial through hole is set, and the aperture of through hole described in this is consistent with the internal diameter of the second compensated cavity on described Master cylinder body 7.As shown in Fig. 2, Fig. 9, Figure 19.
The leading portion profile of described chuck 6 is tapered, and bigger diameter end forward, and back segment profile is cylinder.As shown in Fig. 2, Figure 11, Figure 19.
The front end external diameter of described chuck 6 conical section is greater than the footpath, chamber of leading portion k inner chamber on described Master cylinder body 7, be less than the external diameter (when arranging boss after back segment j, the front end external diameter of described chuck 6 conical section is less than the external diameter of boss) of described auxiliary piston 4 back segment j simultaneously.The rear end external diameter of described chuck 6 conical section is less than the footpath, chamber of leading portion k inner chamber on described Master cylinder body 7.The external diameter of described chuck 6 shell portion is consistent with the footpath, chamber of leading portion k inner chamber on described Master cylinder body 7.As shown in Fig. 2, Figure 11, Figure 19.
Axis along described chuck 6 arranges through hole, and this through hole is divided into forward and backward two sections, and the aperture of leading portion and welding wire major diameter fit (being greater than welding wire external diameter 0.5mm to 2mm), the aperture of its back segment is greater than the aperture of leading portion, and arranges internal thread on the back segment of described chuck 6 through hole.。And send into for ease of welding wire 15, at the cohesive position of different pore size, all technique flaring structure can be set.The conical section part of corresponding described chuck 6, arrange four gap of radial communication through hole on chuck 6 on its external wall, and described gap all axially extends.As shown in Fig. 2, Figure 11, Figure 12, Figure 19.
Certainly, also the axially extending bore of chuck 6 can be set to: front section is bellmouth, hindfoot portion is cylindrical hole; Forward, backward, the aperture of described cylindrical hole is equal to, or greater than the aperture of described bellmouth rear end to big opening end to the osculum end of described bellmouth, and cylindrical hole establishes internal thread, the aperture of bellmouth and welding wire major diameter fit.
Described chuck 6 is penetrated in the leading portion k inner chamber of described Master cylinder body 7 by its rear end, and the rear end face of the rear end face of described chuck 6 relatively described Master cylinder body 7 leading portion k inner chamber is at regular intervals, and this place's distance values is between 5mm to 2cm.Will guarantee especially, when moving after the relatively described Master cylinder body 7 of described chuck 6 is axial, the rear end face of described chuck 6 can not contact with the rear end face of described Master cylinder body 7 leading portion k inner chamber.The front end face of described chuck 6 contacts with the rear end face of described auxiliary piston 4, to guarantee that described auxiliary piston 2 can promote described chuck 6 and move axially backward.As shown in Fig. 2, Figure 19.
The outer wall of described main piston 11 is divided into four sections of n, p, q, r from front to back according to the difference of external diameter and the external diameter being positioned at three sections of n, p, q above becomes large from front to back successively, backmost the external diameter of one section of r is less than the external diameter of several 3rd section of q from front to back, last consistent with the external diameter of the one section of n in foremost.Wherein the external diameter of most leading portion n and this most leading portion n consistent with the axially extending bore in described rear support 8 is from back to front successively through after the second compensated cavity on the through hole of described rear support 8 and described Master cylinder body 7, to extend in the inner chamber of described Master cylinder body 7 leading portion k and to be threadedly connected to the back segment of through hole on described chuck 6.The external diameter counting second segment p is from front to back less than the external diameter (under the state not passing into gas, the front end face of second segment p described in this being contacted with the rear end face of described rear support 8) of described rear support 8.The outer wall of several 3rd section of q and the contact internal walls of described Master cylinder body 7 back segment m cavity from front to back, described in this axial medium position of the 3rd section of q outer wall on be nested with O type circle 9, and the axial length of the 3rd section of q described in this is less than the axial length (the former is the latter's 1/3 to 2/3) of described Master cylinder body 7 back segment m cavity.On the relatively described Master cylinder body 7 of the front end face of the 3rd section of q described in this, backward (1mm to 4mm) at regular intervals, described in this, the port of the back segment m inner chamber of the relatively described Master cylinder body 7 of the rear end face of the 3rd section of q is at regular intervals simultaneously for the most forward edge of the second air inlet 71.As shown in Fig. 2, Figure 13, Figure 19.
Axis along described main piston 11 arranges axially extending bore, and matches with the external diameter of welding wire 15 in the aperture of this through hole, for ease of sending into welding wire 15, make the rear port of this through hole be set to bell and large mouth backward.As shown in Fig. 2, Figure 13, Figure 19.
Axis along described rear end cap 12 sets gradually connecting through hole s and feeding through hole t from front to back.The aperture of described connecting through hole s is greater than the aperture, front end of described feeding through hole t.The nose threads of described connecting through hole s connects the rear end outer wall of described Master cylinder body 7.The outer wall of rearmost one section of r of described main piston 11 is nested with back-moving spring 10.The rear end face of several 3rd section of q from front to back on main piston 11 described in the front end in contact of described back-moving spring 10, the rear end face of connecting through hole s described in the rear end in contact of described back-moving spring 10.As shown in Fig. 2, Figure 19.
The internal diameter of the feeding through hole t on described rear end cap 12 and welding wire 15 major diameter fit, the internal diameter of feeding through hole t is greater than welding wire 15 external diameter and is no more than 0.5mm.As shown in Fig. 2, Figure 19.
The rear end of described rear end cap 12 connects the welding wire feeder in robot arm; the specific implementation structure of this kind of annexation; according to the difference of welding wire model or robot arm and by corresponding variation; this part can adopt existing connected mode; also can new syndeton be set separately; because it is not as main protection point of the present invention, and prior art can be used for reference again, so repeat no more.As shown in Fig. 2, Figure 14 to 16, Figure 19.
In order to avoid welding wire 15 is because wearing and tearing the debris accumulation that falls in the axial hole of drive end bearing bracket 1, forms blocking, the inner chamber footpath of described drive end bearing bracket 1 leading portion a can be made to be greater than welding wire 15 external diameter about 1mm, as 0.8mm, 1.2mm.
Operating principle of the present invention is: when not passing into pressure gas source, and welding wire 15 is constantly sent to forward by rear end, and (namely welding wire 15 is along C to movement) is as shown in Figure 17, Figure 18.When passing into pressure gas source in described first air inlet 21 and the second air inlet 71 simultaneously, air pressure enters front support 3 and auxiliary piston 4 respectively, gap between rear support 8 and main piston 11, promote described auxiliary piston 4 respectively, main piston 11 moves axially backward, the front end face that wherein said auxiliary piston 4 promotes described chuck 6 makes it move backward, described main piston 11 pulls described chuck 6 to move (as shown in figure 17 backward simultaneously, under action of gas source state, chuck 6 is along B to movement), the conical section of described chuck 6 front end is provided with gap, so the external diameter of this conical section is pushing away, under pulling force effect, tightened gradually by the front port of described Master cylinder body 7, the through-hole aperture that now this conical section inside is arranged also can correspondingly diminish, thus welding wire 15 obvolvent is clamped.After removal acting pneumatic, described main piston 11 is under the effect of described back-moving spring, move axially to previous crops and finally reset, simultaneously described chuck 6 is promoted to move forward by described main piston 11, and then chuck 6 promotes again described auxiliary piston 4 and moves forward and reset.Relative to existing clamping mode, not only welding wire 15 will be out of shape because of clamping, and enlarge markedly obvolvent (clamping) area of welding wire 15, clamping more firmly, reliably.In addition, body contours of the present invention is rotational-like, and radial space takies less, is suitable for being built in the welding arm of welding robot using, thus can optimize the structure of welding robot, makes it profile more attractive in appearance, uses convenient.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and modification, these improve and modification also should be considered as protection scope of the present invention.
Except the technical characteristic described in description, be the known technology of those skilled in the art.
Claims (3)
1. a built-in welding wire clamping device, is characterized in that:
Comprise and be ring bodies and coaxial drive end bearing bracket, auxiliary cylinder block, front support, auxiliary piston, chuck, Master cylinder body, rear support, main piston and the rear end cap arranged;
The inner chamber of described drive end bearing bracket is divided into two sections from front to back according to the size of internal diameter, and wherein the internal diameter of leading portion inner chamber matches with the external diameter of welding wire, and the internal diameter of back segment inner chamber is greater than the internal diameter of leading portion inner chamber and arranges internal thread on the chamber wall of this back segment inner chamber;
The front end outer wall of described auxiliary cylinder block arranges external screw thread, and is connected with the back segment inner chamber of described drive end bearing bracket;
The inner chamber of described auxiliary cylinder block is divided into four sections from front to back according to the size of internal diameter and footpath, chamber becomes large successively, wherein arranges the first compensated cavity between first two sections, and the internal diameter of described first compensated cavity is less than the internal diameter of the most leading portion inner chamber of described auxiliary cylinder block; The inwall of rearmost end one section of inner chamber of described auxiliary cylinder block arranges internal thread; On the outer wall of described auxiliary cylinder block, the second segment that corresponding described auxiliary cylinder block counts from front to back and the position of the 3rd section of inner chamber arrange the first air inlet, and the diameter of axle of described first air inlet corresponds to second segment inner chamber place;
The outer wall of described front support coordinates with the inner wall sealing described auxiliary cylinder block counting from front to back second segment inner chamber, and the most forward edge of the rear end face of described front support and the first air inlet on described auxiliary cylinder block is alignd; Described front support arranges axial through hole, and the aperture of through hole described in this is consistent with the internal diameter of the first compensated cavity on described auxiliary cylinder block;
The outer wall of described auxiliary piston is divided into three sections from front to back according to the size of external diameter and external diameter becomes large successively: wherein the external diameter of leading portion and this section consistent with the axially extending bore in described front support is from back to front successively through after the first compensated cavity on the through hole of described front support and described auxiliary cylinder block, extends in the inner chamber of the most leading portion of described auxiliary cylinder block; The external diameter of interlude is less than the external diameter of described front support; The contact internal walls of several 3rd section of cavity from front to back on the outer wall of back segment and described auxiliary cylinder block, the outer wall of the axial medium position of back segment is nested with O type circle, and the axial length of described back segment is less than the axial length of several 3rd section of cavity from front to back on described auxiliary cylinder block; On the relatively described auxiliary cylinder block of rear end face of described back segment, the last side edge-justified calibrations or have forward of the first air inlet certain axially extends;
Axis along described auxiliary piston arranges axially extending bore, matches with the external diameter of welding wire in the aperture of through hole described in this;
The outer wall of described Master cylinder body front end and rear end all arranges external screw thread, and the external screw thread that front end is arranged coordinates with the internal thread hole of described auxiliary cylinder block rear end;
The inner chamber of described Master cylinder body is divided into three sections from front to back according to the size in footpath, chamber and footpath, chamber becomes large successively: between leading portion and the inner chamber of interlude, arrange the second compensated cavity, and the internal diameter of described second compensated cavity is less than the internal diameter of described Master cylinder body leading portion inner chamber; On the outer wall of described Master cylinder body, on corresponding described Master cylinder body, the position of two sections of inner chambers arranges the second air inlet below, and the diameter of axle of described second air inlet corresponds to back segment inner chamber place;
The outer wall of described rear support coordinates with the inner wall sealing of interlude inner chamber on described Master cylinder body, and the most forward edge alignment of the second air inlet or at regular intervals forward on the relatively described Master cylinder body of the rear end face of described rear support; On supporting in the rear, axial through hole is set, and the aperture of through hole described in this is consistent with the internal diameter of the second compensated cavity on described Master cylinder body;
The leading portion profile of described chuck is tapered, and bigger diameter end forward, and back segment profile is cylinder;
The front end external diameter of described chuck conical section is greater than the footpath, chamber of leading portion inner chamber on described Master cylinder body, is less than the external diameter of described auxiliary piston back segment simultaneously; The rear end external diameter of described chuck conical section is less than the footpath, chamber of leading portion inner chamber on described Master cylinder body; The external diameter of described chuck shell portion is consistent with the footpath, chamber of leading portion inner chamber on described Master cylinder body;
Axis along described chuck arranges through hole, and this through hole is divided into forward and backward two sections, the aperture of leading portion and welding wire major diameter fit, and the aperture of back segment is greater than the aperture of leading portion and arranges screw thread on the inwall in this back segment aperture; The conical section part of corresponding described chuck, arrange three or four gap of radial communication through hole on chuck on its external wall, and described gap all axially extends;
Described chuck is penetrated in the leading portion inner chamber of described Master cylinder body by its rear end, and the rear end face of the rear end face of described chuck relatively described Master cylinder body leading portion inner chamber is at regular intervals; The front end face of described chuck contacts with the rear end face of described auxiliary piston;
The outer wall of described main piston is divided into four sections from front to back according to the difference of external diameter, and the external diameter being positioned at three sections above becomes large from front to back successively, the external diameter of the one section external diameter that is less than several 3rd section from front to back backmost: wherein the external diameter of most leading portion and this most leading portion consistent with the axially extending bore in described rear support is from back to front successively through after the second compensated cavity on the through hole of described rear support and described Master cylinder body, to extend in the inner chamber of described Master cylinder body leading portion and to be threadedly connected to the back segment of through hole on described chuck; The external diameter counting second segment is from front to back less than the external diameter of described rear support; The outer wall of several 3rd section and the contact internal walls of described Master cylinder body back segment cavity from front to back, described in this 3rd section of axial medium position outer wall on be nested with O type circle, and the axial length of the 3rd section described in this is less than the axial length of described Master cylinder body back segment cavity; On the relatively described Master cylinder body of the front end face of the 3rd section described in this, the most forward edge of the second air inlet is at regular intervals backward, and the port of the back segment inner chamber of the relatively described Master cylinder body of the rear end face of the 3rd section described in this is at regular intervals simultaneously;
Axis along described main piston arranges axially extending bore, and matches with the external diameter of welding wire in the aperture of this through hole;
Axis along described rear end cap sets gradually connecting through hole and feeding through hole from front to back;
The aperture of described connecting through hole is greater than the aperture, front end of described feeding through hole;
The rear end outer wall of described Master cylinder body is connected at the nose threads of described connecting through hole;
Rearmost one section of outer wall of described main piston is nested with back-moving spring;
The rear end face of several 3rd section from front to back on main piston described in the front end in contact of described back-moving spring, the rear end face of connecting through hole described in the rear end in contact of described back-moving spring;
The internal diameter of the feeding through hole on described rear end cap and welding wire major diameter fit;
The rear end of described rear end cap connects the welding wire feeder in robot arm.
2. built-in welding wire clamping device according to claim 1, is characterized in that: the rear port of the axially extending bore on described auxiliary piston is set to bell and the large mouth of bell backward.
3. built-in welding wire clamping device according to claim 1 and 2, is characterized in that: the rear port of the axially extending bore on described main piston is set to bell and the large mouth of bell backward.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410200086.2A CN103949759B (en) | 2014-05-13 | 2014-05-13 | Built-in welding wire clamping device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410200086.2A CN103949759B (en) | 2014-05-13 | 2014-05-13 | Built-in welding wire clamping device |
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| CN103949759A CN103949759A (en) | 2014-07-30 |
| CN103949759B true CN103949759B (en) | 2015-09-30 |
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| CN201410200086.2A Active CN103949759B (en) | 2014-05-13 | 2014-05-13 | Built-in welding wire clamping device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104551268B (en) * | 2015-01-04 | 2017-02-22 | 齐鲁工业大学 | Thread machining process of welding air cylinder |
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| WO1995031306A1 (en) * | 1994-05-13 | 1995-11-23 | Commonwealth Scientific And Industrial Research Organisation | Gta welding |
| WO2005049259A1 (en) * | 2003-11-21 | 2005-06-02 | Sks Welding Systems Gmbh | Welding torch device for connection to a welding robot |
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| CN101862880A (en) * | 2010-06-11 | 2010-10-20 | 唐山开元机器人***有限公司 | Main chord member joint robot welding system |
| CN201799761U (en) * | 2010-07-07 | 2011-04-20 | 河南科隆集团有限公司 | Welding wire clamping tool |
| CN203804396U (en) * | 2014-05-13 | 2014-09-03 | 泰佰亿（山东）工业有限公司 | Built-in soldering wire clamping device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4458135A (en) * | 1981-04-08 | 1984-07-03 | Regie Nationale Des Usines Renault | Compact tool for automatic MAG spot welding |
| WO1995031306A1 (en) * | 1994-05-13 | 1995-11-23 | Commonwealth Scientific And Industrial Research Organisation | Gta welding |
| WO2005049259A1 (en) * | 2003-11-21 | 2005-06-02 | Sks Welding Systems Gmbh | Welding torch device for connection to a welding robot |
| CN101331000A (en) * | 2005-12-12 | 2008-12-24 | 弗罗纽斯国际有限公司 | Welding torch and end piece and also contact tube for a welding torch |
| CN101862880A (en) * | 2010-06-11 | 2010-10-20 | 唐山开元机器人***有限公司 | Main chord member joint robot welding system |
| CN201799761U (en) * | 2010-07-07 | 2011-04-20 | 河南科隆集团有限公司 | Welding wire clamping tool |
| CN203804396U (en) * | 2014-05-13 | 2014-09-03 | 泰佰亿（山东）工业有限公司 | Built-in soldering wire clamping device |
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| CN103949759A (en) | 2014-07-30 |
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