CN109396680A - Multiple spot hot-riveting welding machine - Google Patents
Multiple spot hot-riveting welding machine Download PDFInfo
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- CN109396680A CN109396680A CN201811317881.4A CN201811317881A CN109396680A CN 109396680 A CN109396680 A CN 109396680A CN 201811317881 A CN201811317881 A CN 201811317881A CN 109396680 A CN109396680 A CN 109396680A
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- 238000003466 welding Methods 0.000 title claims abstract description 159
- 230000007246 mechanism Effects 0.000 claims abstract description 62
- 230000005484 gravity Effects 0.000 claims abstract description 31
- 238000010438 heat treatment Methods 0.000 claims description 27
- 238000009826 distribution Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 7
- 230000033001 locomotion Effects 0.000 claims description 7
- 238000009423 ventilation Methods 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 4
- 238000007664 blowing Methods 0.000 claims description 3
- 238000003754 machining Methods 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229910000679 solder Inorganic materials 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- DMFGNRRURHSENX-UHFFFAOYSA-N beryllium copper Chemical compound [Be].[Cu] DMFGNRRURHSENX-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 208000012260 Accidental injury Diseases 0.000 description 1
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Classifications
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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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
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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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/02—Carriages for supporting the welding or cutting element
- B23K37/0252—Steering means
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- Insertion Pins And Rivets (AREA)
Abstract
This application discloses a kind of multiple spot hot-riveting welding machines, comprising: rivet hot tooling, the rivet hot tooling include several rivet hot plumb joints；The first driving mechanism for driving the rivet hot tooling to go up and down between the first position and the second position；And gravity compensation, gravity compensation are connected with the rivet hot tooling, the gravity compensation at least partly compensates the gravity of the rivet hot tooling.Gravity compensation in the application can balance the gravity of the rivet hot tooling, realize that rise and fall zero are self-possessed, reduce the load of driving mechanism, under the premise of guaranteeing machining accuracy, can effectively drive the service life of mechanism, reduce energy consumption.
Description
Technical Field
The application belongs to the technical field of welding equipment, especially, relates to a multiple spot hot rivet welding machine.
Background
The automobile is an important tool for riding instead of walk, along with the rapid development of the automobile industry and the remarkable promotion of the automobile quantity owned by people, the quality requirement of people on the automobile is higher and higher, automobile manufacturers also continuously improve and innovate in the manufacturing process, but the defects still exist, for example, when the automobile door plate is manufactured, a manual handheld welding gun is adopted for welding, the efficiency is low, in addition, the phenomena of wire drawing, welding leakage, insufficient welding, product surface bulging and the like are frequently caused in the welding process, the production efficiency is reduced, the inspection process is long, the quality is unstable, and manpower and material resources are wasted. In order to improve the working efficiency and the yield, the multi-point welding technology is developed, and the multi-point welding can be simultaneously carried out on workpieces to be welded.
Patent CN206351316U discloses a totally enclosed car door plant welding machine, and it includes supporting seat, work platform, air cylinder and side door down, the central point of supporting seat puts fixed mounting and has flexible inner tube, and the fixed top frame that is provided with in top of frame, air cylinder is connected with the action bars through the top frame down, and the below of action bars is fixed with the carriage arm, and the below of carriage arm is fixed and is provided with the fixing base, and the below fixed mounting of fixing base has welding set. The door plant welding machine drives welding set lift through the air cylinder that pushes down to the welding of welding workpiece is treated in the realization, and the defect that this drive mode exists is: the transmission speed is slow, and the lifting position precision is lower, and then leads to the reduction of machining precision.
Patent application CN104494146A discloses a multiple spot riveting single-point control by temperature change rivet welding machine, including frame, rivet hot core subassembly and rivet hot frock subassembly, rivet welding machine is still including being fixed in the power transmission subassembly on the top roof of rivet hot frock subassembly, the power transmission subassembly includes shaft coupling, spiral riser and the alternating current servo motor of transversely arranging on the roof, and alternating current servo motor passes through the shaft coupling drive spiral riser. In this application, rivet welding machine goes up and down with the drive rivet hot frock subassembly through the cooperation of alternating current servo motor and spiral riser, and this driving method can guarantee the elevating position precision, but because of the problem of spiral riser self structure composition characteristic to and the rivet hot frock subassembly of multiple spot welding machine is numerous, and the reason that weight is too heavy can lead to the fact huge impact to the structure of spiral riser, especially screw and screwed pipe's cooperation department in the spiral riser, has reduced structural strength and life.
It will thus be seen that the prior art is susceptible to further improvements and enhancements.
Disclosure of Invention
The application is for avoiding the weak point that above-mentioned prior art exists, provides a multiple spot rivet welding machine, and this welding machine can balance the gravity of rivet welding frock to reduce the load of motor and ball screw pair.
The technical scheme adopted by the application is as follows:
multipoint rivet welding machine comprising: the hot riveting tool comprises a plurality of hot riveting welding heads; the first driving mechanism is used for driving the hot riveting tool to lift between a first position and a second position; and the gravity compensation mechanism is connected with the hot riveting tool and at least partially compensates the gravity of the hot riveting tool.
The gravity compensation mechanism at least comprises an air cylinder, and a piston rod of the air cylinder synchronously rises and falls along with the hot riveting tool; and the ventilation pressure in the cylinder keeps constant, and the pulling force generated by the hot riveting tool by the cylinder is equal to the gravity of the hot riveting tool.
The piston rod is detachably connected with the hot riveting tool, and the welding machine is provided with a plurality of sets of hot riveting tools; and the ventilation pressure in the cylinder is adjustable, so that the pulling force generated by the cylinder can be balanced with the gravity of the hot riveting tool all the time.
The first driving mechanism comprises a motor and a ball screw pair driven by the motor, and the ball screw pair is connected with the hot riveting tool; the gravity compensation mechanism comprises two air cylinders, and the connecting points of the two air cylinders and the hot riveting tool are symmetrical with each other by taking the connecting points of the ball screw pair and the hot riveting tool as centers.
The welding machine is provided with a lifting guide mechanism for guiding the lifting movement of the hot riveting tool.
The welding machine also comprises a workbench for placing the workpiece to be welded; the welding machine is provided with a welding station and a workpiece taking station, and the welding machine further comprises a second driving mechanism for driving the workbench to reciprocate between the welding station and the workpiece taking station; and the welding station is positioned below the hot riveting tool.
The welding machine is provided with a welding chamber, and the welding station is positioned in the welding chamber; when the workpiece is taken out, at least one half area of the workbench is moved out of the welding chamber.
The welding machine is characterized in that a die used for containing the workpiece to be welded is arranged on the workbench, the die is detachably connected with the workbench, and the welding machine is provided with a plurality of sets of dies.
The hot riveting tool comprises an upper plate and a lower plate, the hot riveting welding heads are mounted on the lower plate and face the workpiece to be welded, and each hot riveting welding head comprises a heating rod and an electrode supplying heat to the heating rod; the hot riveting tool further comprises an electrode self-balancing mechanism, the electrode self-balancing mechanism comprises a liquid distribution plate and a supercharger, the liquid distribution plate is arranged on the upper plate and is connected with the supercharger through a high-pressure pipeline, and an inner pipeline is arranged inside the liquid distribution plate; the electrode self-balancing mechanism also comprises hydraulic cylinders with the same number as the hot riveting welding joints, each hydraulic cylinder comprises a piston rod for outputting hydraulic pressure and a hydraulic cavity for transmitting the hydraulic pressure, and the hydraulic cavities are communicated with the inner pipeline to form an equal-pressure chamber; the electrodes of the hot riveting welding joints correspond to the piston rods of the hydraulic cylinders one by one, and the electrodes are detachably connected with the piston rods.
The hot riveting tool also comprises a fine adjustment mechanism for adjusting the distance between the heating rod and the workpiece to be welded; each hot rivet welding head all includes support, connecting screw, screwed pipe and sleeve pipe, the heating rod is installed in the sleeve pipe, the sleeve pipe links to each other with the screwed pipe, and connecting screw's one end is installed on the support, through adjusting the fastening position of screwed pipe on connecting screw, the realization is right the fine setting of heating rod position.
The hot riveting tool further comprises a cooling mechanism, the cooling mechanism comprises blow pipes, the number of the blow pipes is not less than that of the hot riveting welding heads, and the blow pipes are used for blowing cold air to the welding holes of the workpieces to be welded and the contact parts of the heating rods so as to accelerate the shaping speed of the welding holes.
The welding machine is provided with a plurality of leveling mechanisms arranged at the bottom of the welding machine, each leveling mechanism comprises a cushion block and an adjusting screw rod, one end of each adjusting screw rod is connected with the cushion block, and the other end of each adjusting screw rod is connected with the welding machine.
The welding machine further comprises a control system, the control system comprises a temperature signal acquisition unit used for acquiring the real-time temperature of each welding joint and a receiving unit used for receiving the temperature signal transmitted by the temperature signal acquisition unit, and the control system further comprises a control unit used for controlling the heating temperature and the heating rate of the electrode.
Due to the adoption of the technical scheme, the beneficial effects obtained by the application are as follows:
1. by the multi-point hot riveting welding machine, one-time multi-point hot riveting of the workpiece to be welded can be achieved, and the working efficiency is improved. The welding machine in this application passes through the motor and goes up and down with vice cooperation drive hot riveting frock of ball, and its transmission speed is fast, operates steadily, the power saving, the low noise, and the elevating position is accurate, controllable, and its size that can be according to the various environment of digital input control, strong adaptability. For the big gravity of avoiding the rivet hot frock right ball leads to the fact the damage, this application has set up gravity compensation mechanism, in order to compensate the gravity of rivet hot frock realizes rising and descends zero dead weight, has reduced ball vice's load is guaranteeing under the prerequisite of machining precision, has prolonged actuating mechanism's life effectively, has reduced the energy consumption.
2. The welding joint temperature acquisition device can realize single-point temperature acquisition and single-point temperature control of each welding joint, thereby improving the welding quality and the forming quality of each welding point. The welding method is particularly suitable for welding the automobile door panel, however, the welding method is not limited to the welding of the automobile door panel, and other workpieces can be welded.
3. The multi-point hot riveting welding machine can realize automatic air cooling on the welding part, quickens the shaping speed of the welding part, reduces the working procedures and the operation time, and improves the working efficiency and the productivity.
4. This application has guaranteed that each welding position's welding pressure is the same through setting up electrode self-balancing mechanism to can realize the balanced pressurization of arbitrary multiple spot, realize the disposable welding of a plurality of solder joints, shorten welding time, guarantee welding quality.
5. The workstation in this application can come and go between welding station and the station of getting, has avoided work pieces such as heating rod to cause the accidental injury to operating personnel, has guaranteed operating personnel's personal safety.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is an isometric view of a multi-spot hot rivet welding machine as described herein.
FIG. 2 is a second isometric view of the multi-spot hot rivet welding machine described in the present application.
Wherein,
1. the device comprises a frame 2, an upper plate 3, a lower plate 4, a workbench 5, a buffer cylinder 6, a servo motor 7, a ball screw pair 8, a leveling mechanism 81, an adjusting screw 82, a cushion block 9, a guide mechanism 91, a slide block 92, a guide convex strip 10, a driving cylinder 11, a touch display screen 12, an infrared safety grating 13, a ball guide sleeve 14, a ball guide seat 15 and a guide rod
Detailed Description
In order to more clearly explain the overall concept of the present application, the following detailed description is given by way of example in conjunction with the accompanying drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited by the specific embodiments disclosed below.
In addition, in the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
As shown in fig. 1 and 2, the multi-point hot riveting welding machine includes a hot riveting tool and a first driving mechanism for driving the hot riveting tool to perform a lifting motion between a first position and a second position.
In this embodiment, the first driving mechanism includes a servo motor 6 and a ball screw pair 7 driven by the servo motor 6, and the ball screw pair 7 is connected to the hot riveting tool. The hot riveting tool is driven to lift through the servo motor 6 and the ball screw pair 7, and the position precision of the hot riveting tool can be improved.
The servo motor 6 and the ball screw pair 7 can be replaced by a servo electric cylinder, the servo electric cylinder is a modular product integrally designed with the servo motor and the ball screw pair, closed-loop servo control can be achieved, control precision reaches 0.01mm, the servo electric cylinder is easily connected with control systems such as a PLC (programmable logic controller) and the like, high-precision motion control is achieved, in the operation process, the servo electric cylinder is low in noise, high in transmission speed, stable in operation, high in response speed, energy-saving, clean, free of air source and hydraulic complex pipeline structures, and simple in operation and maintenance.
The welding machine further comprises a gravity compensation mechanism, the gravity compensation mechanism is connected with the hot riveting tool, and the gravity compensation mechanism at least partially compensates the gravity of the hot riveting tool.
In this embodiment, the gravity compensation mechanism includes two buffer cylinders 5, and the two buffer cylinders 5 and the connection point of the hot riveting tool are symmetrical to each other with the connection point of the ball screw pair 7 and the hot riveting tool as a center. And piston rods of the buffer cylinders 5 are lifted synchronously along with the hot riveting tool.
The ventilation pressure in the buffer cylinder 5 is kept constant, and the pulling force generated by the buffer cylinder 5 on the hot riveting tool is equal to the gravity of the hot riveting tool, so that the self weight of the hot riveting tool is kept to rise and fall, the movement counter force is reduced and eliminated, the movement stability is improved, and the load of the first driving mechanism is greatly reduced.
In this application, the piston rod with rivet hot frock detachably connects, the welding machine has many sets of rivet hot frock, to different welding workpiece, perhaps to the different welding parts of same welding workpiece, can be through changing rivet hot frock in order to realize the welding to the corresponding welding position of work piece.
When changing the rivet hot frock, its gravity can change, compensates for the gravity of realization to different rivet hot frock, in this application, the pressure of ventilating in the cushion cylinder 5 is adjustable, so that the pulling force that cushion cylinder 5 produced can be balanced with the gravity of rivet hot frock all the time to keep rising decline zero dead weight.
The hot riveting tool comprises an upper plate 2, a lower plate 3 and a plurality of hot riveting welding heads, wherein the hot riveting welding heads are installed on the lower plate 3 and face the workpiece to be welded. The lower plate 3 is positioned below the upper plate 2 and is connected to the upper plate 2. The ball screw pair 7 or the servo electric cylinder is connected with the upper plate and drives the upper plate 2 and the lower plate 3 to synchronously lift.
The welding machine is provided with a lifting guide mechanism for guiding the lifting motion of the hot riveting tool, the lifting guide mechanism comprises a guide rod 15, the axial direction of the guide rod 15 is parallel to the vertical direction, and the two sides of the upper plate 2 and the two sides of the lower plate 3 can respectively slide up and down along the guide rod 15.
In this embodiment, the welding machine further has a displacement sensor for detecting the position of the upper plate 2, so as to realize precise control of the lifting of the upper plate 2.
Each hot rivet welding joint comprises a heating rod and an electrode for supplying heat to the heating rod.
The hot riveting tool further comprises an electrode self-balancing mechanism, the electrode self-balancing mechanism comprises a liquid distribution plate and a supercharger, the liquid distribution plate is arranged on the upper plate 2 and is connected with the supercharger through a high-pressure pipeline, and an inner pipeline is arranged inside the liquid distribution plate.
The electrode self-balancing mechanism further comprises hydraulic cylinders with the same number as the hot riveting welding joints, each hydraulic cylinder comprises a piston rod for outputting hydraulic pressure and a hydraulic cavity for transmitting the hydraulic pressure, and the hydraulic cavities are communicated with the inner pipeline and form an equal-pressure chamber. The electrodes of the hot riveting welding joints correspond to the piston rods of the hydraulic cylinders one by one, and the electrodes are detachably connected with the piston rods.
This application has guaranteed that each welding position's welding pressure is the same through setting up electrode self-balancing mechanism to can realize the balanced pressurization of arbitrary multiple spot, realize the disposable welding of a plurality of solder joints, shorten welding time, guarantee welding quality.
The hot riveting tool further comprises a fine adjustment mechanism for adjusting the distance between the heating rod and the workpiece to be welded. Each hot rivet welding joint comprises a support, a connecting screw rod, a threaded pipe and a sleeve pipe, the heating rod is installed in the sleeve pipe, the sleeve pipe is connected with the threaded pipe, one end of the connecting screw rod is installed on the support, and the support is installed on the lower plate. The fine adjustment of the position of the heating rod is realized by adjusting the fastening position of the threaded pipe on the connecting screw rod.
In this embodiment, the sleeve is a beryllium copper round rod with a diameter of 20mm, the heating rod is arranged inside the beryllium copper round rod, the threaded pipe is sleeved outside the connecting screw rod, and the sleeve is arranged at the bottom end of the threaded pipe.
The welding machine further comprises a frame 1 and a workbench 4 which is arranged on the frame 1 and used for placing a workpiece to be welded, wherein the workbench 4 is positioned below the lower plate 3. The working table 4 is connected with the lower plate 3 through a ball guide post and guide sleeve, the ball guide sleeve 13 is arranged on the top end face of the working table 4, the ball guide post 14 is arranged on the bottom end face of the lower plate 3, and when the lower plate 3 is driven by the upper plate 2 to descend until the ball guide post 14 is inserted into the ball guide sleeve 13, the working table 4 and the lower plate 3 are positioned relatively.
The welding machine is provided with a welding station and a workpiece taking station, and the welding station is located below the hot riveting tool. The welder has a welding chamber in which the welding station is located. The inlet of the welding chamber is provided with an infrared safety grating 12.
The welding machine further comprises a second driving mechanism for driving the workbench 4 to reciprocate between the welding station and the workpiece taking station. When taking out the workpiece, at least one half area of the workbench 4 is moved out of the welding chamber. Preferably, when getting a piece, workstation 4 has two-thirds the region to be located the outside of welding cavity, should expose regional area and had both guaranteed that operating personnel has sufficient safe space and can realize getting a piece safely, can realize workstation 4's quick playback again.
In this embodiment, the second driving mechanism includes a driving cylinder 10, and the driving cylinder 10 is disposed on one side of the worktable 4 and can push the worktable 4 to reciprocate between the welding station and the workpiece taking station. The below of workstation 4 is provided with guiding mechanism 9, guiding mechanism is including setting up slider 91 and the setting in workstation 4 bottom are in direction sand grip 92 on the frame 1 under second actuating mechanism's the effect, slider 91 can be followed direction sand grip 92 slides.
The welding machine is characterized in that a die used for containing the workpieces to be welded is arranged on the workbench 4, the die is detachably connected with the workbench 4, and the welding machine is provided with a plurality of sets of dies, so that the machining requirements of different workpieces can be met.
The hot riveting tool further comprises a cooling mechanism, the cooling mechanism comprises blow pipes, the number of the blow pipes is not less than that of the hot riveting welding heads, and the blow pipes are used for blowing cold air to the welding holes of the workpieces to be welded and the contact parts of the heating rods so as to accelerate the shaping speed of the welding holes. In this embodiment, one of the blowpipes corresponds to one of the weld holes.
The welding machine further comprises a control system, the control system comprises a temperature signal acquisition unit used for acquiring the real-time temperature of each welding joint and a receiving unit used for receiving the temperature signal transmitted by the temperature signal acquisition unit, and the control system further comprises a control unit used for controlling the heating temperature and the heating rate of the electrode. This application has realized single-point control by temperature monitoring and temperature control to each heating rod, has promoted welding efficiency, has guaranteed the welding quality of each solder joint effectively.
The control system further comprises a touch display screen 11 arranged on the rack 1, and various environmental parameters and technological parameters can be input through the touch display screen 11 so as to realize automatic processing of workpieces.
In addition, in this application, the welding machine has a plurality of leveling mechanism that set up in frame 1 bottom, and each leveling mechanism all includes cushion 82 and adjusting screw 81, and the one end of adjusting screw 81 links to each other with cushion 82, and the other end links to each other with the welding machine. Before machining, the frame 1 needs to be leveled by the leveling mechanism to avoid machining errors caused by the fact that the workbench 4 is in an inclined state.
Parts not described in this application can be realized by using or referring to the existing technology.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. Multipoint rivet welding machine, its characterized in that includes:
the hot riveting tool comprises a plurality of hot riveting welding heads;
the first driving mechanism is used for driving the hot riveting tool to lift between a first position and a second position; and
the gravity compensation mechanism is connected with the hot riveting tool and at least partially compensates the gravity of the hot riveting tool;
the welding machine is provided with a lifting guide mechanism for guiding the lifting movement of the hot riveting tool.
2. The multi-spot hot rivet welding machine of claim 1,
the gravity compensation mechanism at least comprises an air cylinder, and a piston rod of the air cylinder synchronously rises and falls along with the hot riveting tool;
the ventilation pressure in the air cylinder is kept constant, and the pulling force of the air cylinder on the hot riveting tool is equal to the gravity of the hot riveting tool;
the piston rod is detachably connected with the hot riveting tool, and the welding machine is provided with a plurality of sets of hot riveting tools;
and the ventilation pressure in the cylinder is adjustable, so that the pulling force generated by the cylinder can be balanced with the gravity of the hot riveting tool all the time.
3. The multi-spot hot rivet welding machine of claim 2,
the first driving mechanism comprises a motor and a ball screw pair driven by the motor, and the ball screw pair is connected with the hot riveting tool;
the gravity compensation mechanism comprises two air cylinders, and the connecting points of the two air cylinders and the hot riveting tool are symmetrical with each other by taking the connecting points of the ball screw pair and the hot riveting tool as centers.
4. The multi-spot hot rivet welding machine of claim 1,
the welding machine also comprises a workbench for placing the workpiece to be welded;
the welding machine is provided with a welding station and a workpiece taking station, and the welding machine further comprises a second driving mechanism for driving the workbench to reciprocate between the welding station and the workpiece taking station;
the welding station is positioned below the hot riveting tool;
the welding machine is provided with a welding chamber, and the welding station is positioned in the welding chamber;
when the workpiece is taken out, at least one half area of the workbench is moved out of the welding chamber.
5. The multi-spot hot rivet welding machine of claim 4,
the welding machine is characterized in that a die used for containing the workpiece to be welded is arranged on the workbench, the die is detachably connected with the workbench, and the welding machine is provided with a plurality of sets of dies.
6. The multi-spot hot rivet welding machine of claim 4,
the hot riveting tool comprises an upper plate and a lower plate, the hot riveting welding heads are mounted on the lower plate and face the workpiece to be welded, and each hot riveting welding head comprises a heating rod and an electrode supplying heat to the heating rod;
the hot riveting tool further comprises an electrode self-balancing mechanism, the electrode self-balancing mechanism comprises a liquid distribution plate and a supercharger, the liquid distribution plate is arranged on the upper plate and is connected with the supercharger through a high-pressure pipeline, and an inner pipeline is arranged inside the liquid distribution plate;
the electrode self-balancing mechanism also comprises hydraulic cylinders with the same number as the hot riveting welding joints, each hydraulic cylinder comprises a piston rod for outputting hydraulic pressure and a hydraulic cavity for transmitting the hydraulic pressure, and the hydraulic cavities are communicated with the inner pipeline to form an equal-pressure chamber;
the electrodes of the hot riveting welding joints correspond to the piston rods of the hydraulic cylinders one by one, and the electrodes are detachably connected with the piston rods.
7. The multi-spot hot rivet welding machine of claim 6,
the hot riveting tool also comprises a fine adjustment mechanism for adjusting the distance between the heating rod and the workpiece to be welded;
each hot rivet welding head all includes support, connecting screw, screwed pipe and sleeve pipe, the heating rod is installed in the sleeve pipe, the sleeve pipe links to each other with the screwed pipe, and connecting screw's one end is installed on the support, through adjusting the fastening position of screwed pipe on connecting screw, the realization is right the fine setting of heating rod position.
8. The multi-spot hot rivet welding machine of claim 6,
the hot riveting tool further comprises a cooling mechanism, the cooling mechanism comprises blow pipes, the number of the blow pipes is not less than that of the hot riveting welding heads, and the blow pipes are used for blowing cold air to the welding holes of the workpieces to be welded and the contact parts of the heating rods so as to accelerate the shaping speed of the welding holes.
9. The multi-spot hot rivet welding machine of claim 1,
the welding machine is provided with a plurality of leveling mechanisms arranged at the bottom of the welding machine, each leveling mechanism comprises a cushion block and an adjusting screw rod, one end of each adjusting screw rod is connected with the cushion block, and the other end of each adjusting screw rod is connected with the welding machine.
10. A multi-spot hot rivet welding machine according to any one of claims 6 to 9,
the welding machine further comprises a control system, the control system comprises a temperature signal acquisition unit used for acquiring the real-time temperature of each welding joint and a receiving unit used for receiving the temperature signal transmitted by the temperature signal acquisition unit, and the control system further comprises a control unit used for controlling the heating temperature and the heating rate of the electrode.
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| CN111843323A (en) * | 2020-07-14 | 2020-10-30 | 许敏 | Grid welding machine |
| CN112060607A (en) * | 2020-07-29 | 2020-12-11 | 南京阿兹曼电子科技有限公司 | Hot riveting welding device and hot riveting welding method thereof |
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| CN109396680B (en) | 2019-06-25 |
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