CN107570855B - Automatic projection welding device for nuts - Google Patents

Automatic projection welding device for nuts Download PDF

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Publication number
CN107570855B
CN107570855B CN201711039243.6A CN201711039243A CN107570855B CN 107570855 B CN107570855 B CN 107570855B CN 201711039243 A CN201711039243 A CN 201711039243A CN 107570855 B CN107570855 B CN 107570855B
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China
Prior art keywords
lifting mechanism
platform
projection welding
sets
nut
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CN201711039243.6A
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CN107570855A (en
Inventor
赵中秋
左安邦
胡敏
刘腊腊
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Tianjin 707 Hi Tech Co Ltd
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Tianjin 707 Hi Tech Co Ltd
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Abstract

The utility model provides an automatic projection welding machine of nut which characterized in that: the device comprises a nut conveyor, a projection welding machine, a lifting mechanism, a servo mechanism and a tool clamp; the nut conveyer sets up the side of projection welding machine, servo by the base support, with the lifting mechanism guide rail is connected, lifting mechanism sets up two sets altogether, servo correspond set up two sliding bracket with lifting mechanism connects, frock clamp is totally four sets, falls into two sets ofly, and every two of group are installed respectively on lifting mechanism, frock clamp with lifting mechanism fixed connection.

Description

Automatic projection welding device for nuts
Technical Field
The invention relates to the technical field of welding, in particular to an automatic projection welding device for nuts.
Background
Nut welding is an operation which often occurs in the industry, and the conventional nut welding process is that nuts are placed manually, so that the efficiency in the production process is low, more seriously, safety accidents are easily caused by manual placement, and therefore, the automation of the nut welding production process is especially important. The existing automatic nut projection welding machine is divided into a single station and multiple stations, wherein the multiple stations utilize a rotating disc for feeding, but the automatic nut projection welding machine is mainly suitable for welding small workpieces, when workpieces needing to be welded are large in the production process, only one station is arranged on the common projection welding machine, the workpieces need to be manually placed in for welding, the workpieces need to be manually taken out after being welded, holes in the workpieces need to be aligned with positioning pins when the workpieces are placed in, and therefore, a long time is consumed during feeding and discharging, the work of the automatic nut projection welding machine is stopped, and the production efficiency is reduced.
Disclosure of Invention
In view of the above problems, the present invention is directed to solving the above problems, and providing an automatic projection welding device for nuts, which improves the automation level of the nut projection welding machine. The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an automatic projection welding machine of nut which characterized in that: the device comprises a nut conveyor, a projection welding machine, a lifting mechanism, a servo mechanism and a tool clamp; the nut conveyer sets up the side of projection welding machine, servo by the base support, with the lifting mechanism guide rail is connected, lifting mechanism sets up two sets altogether, servo correspond set up two sliding bracket with lifting mechanism connects, frock clamp is totally four sets, falls into two sets ofly, and every two of group are installed respectively on lifting mechanism, frock clamp with lifting mechanism fixed connection.
Furthermore, a support is arranged below the nut conveyor, a guide chute is arranged above the side of the nut conveyor, the side wall of the nut conveyor is provided with an opening and is connected with an air blow pipe, the air blow pipe is connected with a shooting gun, the shooting gun is fixed on the side surface of a welding electrode of the projection welding machine, and the shooting gun is aligned to a positioning pin of the projection welding machine.
Further, establish the controller on the projection welding machine, establish the cylinder on the projection welding machine, welding electrode is connected to the cylinder, welding electrode side sets up the sensor, the welding electrode sets up the locating pin down.
Further, the servo mechanism includes: base, tow chain, guide rail, lead screw, motor, sliding bracket, bearing, the base totally six supports the guide rail, the motor is connected the bearing is established to lead screw, lead screw end, the bearing with sliding bracket fixed connection, sliding bracket is equipped with two, bears respectively lifting mechanism, servo mechanism's guide rail side is equipped with the tow chain.
Further, the lifting mechanism includes: the lifting mechanism is provided with a platform base, and the platform base is fixedly connected with a sliding bracket of the servo mechanism; the lifting mechanism is of a double-layer structure, the bottom layer is a sliding platform, the top layer is a lifting platform, a platform sliding groove is formed below the sliding platform, and the side surface of the sliding platform is connected with the translation cylinder; the lifting platform is provided with a lifting cylinder, the lifting platform is provided with a tool clamp and a supporting rod of a workpiece, and the supporting rod is provided with a limiting frame.
Further, the shape of the limiting frame is adjustable, and the limiting frame is detachably connected with the supporting rod.
Further, the frock clamp includes: the tooling clamp comprises a cylinder, a limiting block, a pin shaft, a clamp arm, a pressing block, a bottom block, a pin seat and an L-shaped seat, wherein the tooling clamp is connected with the lifting platform through the L-shaped seat through the bolt, the cylinder is connected with the clamp arm through the limiting block, the clamp arm is opened and closed by taking the pin shaft as an axis, the pressing block is arranged at the bottom end of the clamp arm, when the tooling clamp is in a closed state, the pressing block presses the bottom block, the bottom block and the pin seat are arranged on the same horizontal plane, and a positioning pin is arranged on the pin seat.
Furthermore, the orientation of two sets of tool clamp positioning pins arranged on the lifting mechanism is opposite.
The invention has the advantages that:
1. the invention improves the automation degree of nut welding, avoids manual operation for placing the nut, improves the working efficiency and also reduces the risk of safety accidents.
2. The invention is provided with the servo mechanism to drive the two sets of lifting mechanisms, thereby effectively utilizing the time gap of discharging and improving the working efficiency.
3. The nut projection welding tool is provided with the work fixtures for the workpieces in different shapes, and can be matched with the supporting rod and the limiting frame to operate according to the shapes of the workpieces.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a perspective view of the present invention.
Fig. 2 is a perspective view of the jig platform of the present invention.
Fig. 3 is a perspective view of the servo mechanism of the present invention.
Fig. 4 is a perspective view of the jig of the present invention.
Wherein:
1. a base; 2. a lifting mechanism; 21. a platform base; 22. a lifting platform;
23. a lifting cylinder; 24. a translation cylinder; 25. a platform chute; 26. a support bar;
27. a limiting frame; 28. a sliding platform; 3. a servo mechanism; 31 a bearing;
32. a drag chain; 33. a guide rail; 34. a lead screw; 35. a motor;
36. a sliding bracket; 4. a tooling fixture; 41. a cylinder; 42. a limiting block;
43. a pin shaft; 44. a clamp arm; 441. a compression block; 45. a bottom block;
46. a pin seat; 47. an L-shaped seat; 5. a projection welding machine; 51. positioning pins;
52. a sensor; 53. welding an electrode; 6. a controller; 7. a nut conveyor;
71. a material guide chute; 72. a support; 73. an air blowing pipe; 74. shooting a gun;
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
An automatic projection welder 5 for nuts as shown in fig. 1-4 is characterized in that: the device comprises a nut conveyor 7, a projection welding machine 5, a lifting mechanism 2, a servo mechanism 3 and a tool clamp 4; nut conveyer 7 sets up the side of projection welding machine 5, servo 3 is supported by base 1, with 2 guide rails 33 of lifting mechanism connect, lifting mechanism 2 sets up two sets altogether, servo 3 corresponds set up two sliding bracket 36 with lifting mechanism 2 connects, frock clamp 4 is four sets altogether, falls into two sets ofly, and every two of group are installed respectively on lifting mechanism 2, frock clamp 4 with 2 fixed connection of lifting mechanism.
As shown in fig. 1, a support 72 is arranged below the nut conveyor 7, a material guide chute 71 is arranged laterally above the nut conveyor 7, an opening in a side wall of the nut conveyor 7 is connected with a gas blowing pipe 73, the gas blowing pipe 73 is connected with a gun 74, the nut enters the gas blowing pipe 73 from an opening in a side surface of the nut conveyor 7 under the action of centrifugal force during feeding, the nut is blown into the gun 74 by the gas blowing pipe 73, the gun 74 is fixed on a side surface of a welding electrode 53 of the projection welder 5, a gun of the gun 74 is aligned with a positioning pin 51 of the projection welder 5, a sensor 52 is arranged on a side surface of the welding electrode 53 of the projection welder 5, and when the nut needs to be placed, the nut gun 74 works to place the nut on the positioning pin 51 of.
As shown in fig. 1, a controller 6 is arranged on the projection welding machine 5, the controller 6 controls the work flow of the whole nut automatic projection welding machine 5, an air cylinder 41 is arranged on the projection welding machine 5, the air cylinder 41 is connected with a welding electrode 53, the air cylinder 41 drives the welding electrode 53 to move up and down during work, and the welding electrode 53 is sleeved on the nut to weld the nut on a workpiece.
As shown in fig. 3, the servo mechanism 3 includes: base 1, tow chain 32, guide rail 33, lead screw 34, motor 35, sliding bracket 36, bearing, base 1 is totally six, supports guide rail 33, motor 35 connects lead screw 34, lead screw 34 end establish the bearing, the bearing with sliding bracket 36 fixed connection, sliding bracket 36 is equipped with two, bears respectively lifting mechanism 2, servo mechanism 3's guide rail 33 side is equipped with tow chain 32. The servo mechanism 3 is supplied with power through a motor 35, the motor 35 drives a lead screw 34 to move left and right, the lead screw 34 drives a sliding bracket 36 to slide left and right through a bearing, and a drag chain 32 on the side of a guide rail 33 is used for protecting vulnerable components such as electric wires.
As shown in fig. 2, the lifting mechanism 2 includes: the lifting mechanism 2 is provided with the platform base 21, the platform base 21 is fixedly connected with a sliding bracket 36 of the servo mechanism 3, the servo mechanism 3 drives the lifting mechanism 2 to slide left and right, the lifting mechanism 2 is of a double-layer structure, the bottom layer is provided with the sliding platform 28, the top layer is provided with the lifting platform 22, the sliding platform 28 is arranged below the sliding platform 28, the side surface of the sliding platform 28 is connected with the translation cylinder 24, and the translation cylinder 24 drives the sliding platform 28 to move in the horizontal direction; a lifting cylinder 23 is arranged below the lifting platform 22, and the lifting cylinder 23 moves in the vertical direction instead of the lifting platform 22; the lifting platform 22 is provided with the tool clamp 4 and a supporting rod 26 of a workpiece, the supporting rod 26 is provided with a limiting frame 27, and the limiting frame 27 is shaped
The adjustable support is adjustable, and the limiting frame 27 is detachably connected with the supporting rod 26 and can be operated in a manner of being matched with the shape of a workpiece.
As shown in fig. 4, the work fixture 4 includes: the tooling fixture comprises a cylinder 41, a limiting block 42, a pin shaft 43, a fixture arm 44, a pressing block 441, a bottom block 45, a pin seat 46 and an L-shaped seat 47, wherein the tooling fixture 4 is connected with the lifting platform 22 through the L-shaped seat 47 through a bolt, the cylinder 41 is connected with the fixture arm 44 through the limiting block 42, the fixture arm 44 is opened and closed by taking the pin shaft 43 as an axis, the position shown by an arrow in the figure 4 can be opened, the pressing block 441 is arranged at the bottom end of the fixture arm 44, when the tooling fixture 4 is in a closed state, the pressing block 441 presses the bottom block 45, the bottom block 45 and the pin seat 46 are on the same horizontal plane, and a positioning pin 51 is arranged on the pin seat 46 of a workpiece. The orientation of two sets of positioning pins 51 of the tool clamp 4 arranged on the lifting mechanism 2 is opposite.
The working mode is as follows:
when the welding machine works, firstly, the operation console opens the tooling clamp 4, a workpiece to be welded is placed in the clamp, the tooling clamp 4 is closed, the sensor 52 sends a signal, the servo mechanism 3 moves to drive the lifting mechanism 2 to move, the lifting mechanism 2 aligns the hole position of the workpiece with the positioning pin 51 of the projection welder 5 and then falls down through the signal sent by the sensor 52, the workpiece is placed in the positioning pin 51 of the projection welder 5, at the moment, the nut is placed on the positioning pin 51 by the nut conveyor 7, the nut is welded on the workpiece by the welding electrode 53 of the projection welder 5, the sensor 52 sends out a signal after the welding is finished, the lifting mechanism 2 is lifted up, the nut continuously moves to the next hole position and then falls down, the previous operation steps are repeated for welding, after all the hole positions on the workpiece are welded with the nuts, the lifting mechanism 2 lifts the welded workpiece, and the servo mechanism 3 moves to give a working position for another place to lift.
And lifting the workpiece to be welded on the mechanism 2, then opening the tool clamp 4, and taking out the welded workpiece by a worker to finish one-time operation. When the first lifting mechanism 2 is operated, the workpiece to be welded can be placed into the other lifting mechanism 2, and when the first operation is completed, the projection welding machine 5 can directly perform the next welding.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (6)

1. The utility model provides an automatic projection welding device of nut which characterized in that: the device comprises a nut conveyor (7), a projection welding machine (5), a lifting mechanism (2), a servo mechanism (3) and a tool clamp (4); the nut conveyor (7) is arranged on the side face of the projection welding machine (5), the servo mechanism (3) is supported by the base (1) and is connected with the guide rail (33) of the lifting mechanism (2), the lifting mechanism (2) is provided with two sets, the servo mechanism (3) is correspondingly provided with two sliding brackets (36) which are connected with the lifting mechanism (2), the tooling fixtures (4) are four sets and divided into two sets, each two sets are respectively installed on the lifting mechanism (2), and the tooling fixtures (4) are fixedly connected with the lifting mechanism (2); the servo mechanism (3) comprises: the lifting mechanism comprises a base (1), a drag chain (32), guide rails (33), a lead screw (34), a motor (35), a sliding bracket (36) and bearings, wherein the base (1) is six in number and supports the guide rails (33), the motor (35) is connected with the lead screw (34), the tail end of the lead screw (34) is provided with the bearings, the bearings are fixedly connected with the sliding bracket (36), the number of the sliding bracket (36) is two, the two sliding brackets are respectively used for bearing the lifting mechanism (2), and the drag chain (32) is arranged on the side of the guide rails (33) of the servo mechanism (3); the lifting mechanism (2) comprises: the lifting mechanism comprises a platform base (21), a lifting platform (22), a lifting cylinder (23), a sliding platform (28), a translation cylinder (24), a platform sliding groove (25), a supporting rod (26) and a limiting frame (27), wherein the platform base (21) is arranged below the lifting mechanism (2), and the platform base (21) is fixedly connected with a sliding bracket (36) of the servo mechanism (3); the lifting mechanism (2) is of a double-layer structure, the bottom layer is a sliding platform (28), the top layer is a lifting platform (22), a platform sliding groove (25) is formed below the sliding platform (28), and the side surface of the sliding platform (28) is connected with the translation cylinder (24); lifting cylinder (23) are set up down in lift platform (22), establish frock clamp (4) on lift platform (22) to and bracing piece (26) of work piece, spacing (27) are installed to bracing piece (26).
2. An automatic projection welding apparatus for nuts as claimed in claim 1, wherein: support (72) are set down in nut conveyer (7), and side top sets up baffle box (71), nut conveyer (7) lateral wall opening is connected with gas blow pipe (73), gas blow pipe (73) are connected and are penetrated rifle (74), it fixes to penetrate rifle (74) the side of projection welding machine (5) welding electrode (53), the rifle of penetrating rifle (74) is aimed at locating pin (51) of projection welding machine (5).
3. The automatic projection welding device for nuts according to claim 1, characterized in that the controller (6) is arranged on the projection welding machine (5), the air cylinder (41) is connected with the welding electrode (53), the sensor (52) is arranged on the side surface of the welding electrode (53), and the positioning pin (51) is arranged below the welding electrode (53).
4. An automatic projection welding device for nuts according to claim 1, characterized in that the shape of the limiting frame (27) is adjustable, and the limiting frame (27) is detachably connected with the supporting rod (26).
5. The automatic projection welding device for nuts according to claim 1, characterized in that said tooling fixture (4) comprises: air cylinder (41), stopper (42), round pin axle (43), anchor clamps arm (44), compact heap (441), bottom block (45), round pin seat (46), L type seat (47), frock clamp (4) through the L type seat (47) with lift platform (22) bolted connection, air cylinder (41) through stopper (42) with anchor clamps arm (44) are connected, anchor clamps arm (44) use round pin axle (43) to open and shut as the axle center, anchor clamps arm (44) bottom sets up compact heap (441), when frock clamp (4) are closed state, compact heap (441) bottom block (45), bottom block (45) with round pin seat (46) on same horizontal plane, set up locating pin (51) on round pin seat (46).
6. An automatic projection welding device for nuts according to claim 1, characterized in that the orientation of the two sets of positioning pins (51) of the tooling fixture (4) arranged on the lifting mechanism is opposite.
CN201711039243.6A 2017-10-24 2017-10-24 Automatic projection welding device for nuts Active CN107570855B (en)

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Application Number Priority Date Filing Date Title
CN201711039243.6A CN107570855B (en) 2017-10-24 2017-10-24 Automatic projection welding device for nuts

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Application Number Priority Date Filing Date Title
CN201711039243.6A CN107570855B (en) 2017-10-24 2017-10-24 Automatic projection welding device for nuts

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CN107570855B true CN107570855B (en) 2021-02-26

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108788426A (en) * 2018-06-29 2018-11-13 广州中设机器人智能装备股份有限公司 A kind of nut projection welding device on auto panel automatic assembly line
CN109014528B (en) * 2018-07-10 2021-08-20 浙江海洋大学 Automatic feeding spot welding machine for nuts
CN109719380A (en) * 2019-01-29 2019-05-07 武汉中人瑞众汽车零部件产业有限公司 Utilize the method and device of welding robot project-welding nut on sheet metal component
CN113664354A (en) * 2020-05-14 2021-11-19 上汽通用汽车有限公司 Projection welding device, system and method for the field of vehicles

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101146712B1 (en) * 2010-05-20 2012-05-17 주식회사 한국센트랄 Automatic resistance welding apparatus and method for link rod
CN103659127B (en) * 2013-12-31 2016-03-02 安徽黄山恒久链传动有限公司 For the special equipment of conveying with flat-top chain annex automatic welding
CN204954146U (en) * 2015-09-12 2016-01-13 佘晓燕 Multi -head welder
CN205437472U (en) * 2016-04-12 2016-08-10 保定苏博汽车零件制造有限公司 Multistation shang , blanking machine for projection welder
CN105750808B (en) * 2016-04-29 2018-04-13 重庆延锋安道拓汽车部件系统有限公司 Projection welder welds detent mechanism and projection welder robot welding system
CN206010127U (en) * 2016-08-29 2017-03-15 江苏北人机器人系统股份有限公司 A kind of automatic material blanking mechanism and the double projection welder with which

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