CN104772524A - An automatic feeding and cutting machine for metal bars - Google Patents

Abstract

The invention discloses an automatic feeding and cutting machine for metal bars, which comprises an automatic feeding mechanism and an automatic cutting mechanism, wherein the automatic feeding mechanism is arranged on the upper side of the automatic feeding mechanism; the automatic feeding mechanism comprises a feeding device and a clamping device, wherein the feeding device controls the clamping device to adjust the position so as to position the cutting position of the metal bar in the clamping device; the automatic cutting mechanism comprises a saw blade, a first motor for controlling the saw blade to rotate and a second motor for controlling the saw blade to advance and retreat to the metal bar. The invention can automatically feed and cut off the super-long metal bar, thereby improving the production efficiency and the product quality, saving the cost of enterprises, reducing the labor intensity of workers and improving the safety.

Description

An automatic feeding and cutting machine for metal bars

technical field

The invention relates to the technical field of cutting and processing equipment, in particular to an automatic feeding and cutting machine for metal bars.

Background technique

In industries such as watches and mobile phones, a large number of small hardware parts are required, such as the "strap straps" of watches, mobile phone charger plugs, etc., all of which are cut from long metal bars. The traditional production method is to use a three-phase asynchronous motor to drive the saw blade to rotate at high speed, then use the left hand to push the material rod into the bottom of the saw blade and clamp the bar material, and then use the right hand to slowly push the high-speed rotating cutting blade forward to push the metal rod After the material is cut off, the high-speed rotating cutting piece will be returned, and then the previous action will be repeated for the next metal bar material cutting.

From the above description of the production process, it can be seen that the traditional metal bar cutting method has low production efficiency, high labor intensity and unsafe conditions. Moreover, in the process of manual operation, the quality of all products cannot be guaranteed to reach the standard. In particular, it is very difficult to rework the metal bars that are cut into shorter lengths. The general treatment method is to melt them directly, which wastes casting costs.

From the perspective of production efficiency, the traditional cutting method requires more than one worker to take care of one cutting device, and the labor cost is obviously too high, which does not meet the cost saving requirements of the enterprise.

Contents of the invention

The technical problem to be solved by the present invention is to provide an automatic feeding and cutting machine for metal bars, which can automatically complete the feeding and cutting of super-long metal bars, and improve production efficiency and product quality. Quality, saving the cost of the enterprise, reducing the labor intensity of workers and improving safety.

In order to solve the above technical problems, the technical solution adopted by the present invention is: an automatic feeding and cutting machine for metal bars, including an automatic feeding mechanism and an automatic cutting mechanism; wherein, the automatic feeding mechanism includes a feeding device and a clamping mechanism device, the feeding device controls the clamping device to adjust the position, so that the metal bar in the clamping device is positioned at the cutting position; the automatic cutting mechanism includes a saw blade, a first motor that controls the rotation of the saw blade, and The second motor that controls the advance and retreat of the saw blade to the metal bar.

In the above technical solution, the first motor is a rotary motor, and the second motor is a feed servo motor.

In the above technical solution, the clamping device includes a first clamping device and a second clamping device, and the second clamping device and the first clamping device are sequentially arranged along the conveying direction of the metal bar; wherein, the second clamping device The device is driven by the feeding device to move relative to the first clamping device to adjust the position of the front end of the metal bar in the first clamping device to locate the cutting position; after the cutting position is positioned, the automatic cutting mechanism The metal bar in the first clamping device is cut.

In the above technical solution, the feeding device includes a feeding cylinder and a guide rail, the output shaft of the feeding cylinder is connected to the second clamping device in transmission; the feeding cylinder drives the second clamping device to move relative to the first clamping device along the direction of the guide rail.

In the above technical solution, the first clamping device includes a clamping cylinder, a fixed clamp and a movable clamp, and the clamping cylinder drives the movable clamp to move, so as to clamp the metal bar when the movable clamp is close to the fixed clamp, and the movable clamp Loosen the metal bar when away from the fixed fixture.

In the above technical solution, the fixing fixture is provided with a through hole conforming to the cross-sectional shape of the metal bar, and the through hole can allow the metal bar to pass through; wherein, the outer side of the through hole is disconnected and formed with spring pressure For the spring pressing part of the structure, when the movable fixture approaches the fixed fixture, the movable fixture presses the spring pressing part, and the spring pressing part then presses against the metal bar in the through hole to achieve the clamping effect.

In the above technical solution, the automatic positioning method of the cutting position of the metal bar by the first clamping device, the second clamping device and the feeding device is: the front end of the metal bar is clamped in the first clamping device, The second clamping device is released, the feeding device drives the second clamping device away from the first clamping device, and stops after reaching the preset position, the second clamping device is clamped, the first clamping device is released, and the feeding device again Drive the second clamping device to move closer to the first clamping device to adjust the cutting position of the front end of the metal bar in the first clamping device; after the cutting position is determined, the first clamping device clamps, and the second The second clamping device continues to maintain the clamping state, ready for cutting.

In the above technical solution, the automatic feeding mechanism and the automatic cutting mechanism are arranged on a workbench, and the workbench is provided with a cooling device for cooling the cutting station, and the cooling device includes an oil pump motor, an oil tank and a spray The oil pump motor pumps up the cutting fluid in the oil tank and sprays the cutting fluid from the spray head through the pipeline, and the sprayed cutting fluid flows back into the oil tank from the workbench.

In the above-mentioned technical scheme, it also includes a baffle that wraps the workbench and the equipment on it, and the baffle is provided with a range hood, an alarm indicator light and a circuit control system, and the circuit control system is connected with the range hood and the alarm indicator light. , The automatic feeding mechanism and the automatic cutting mechanism are electrically connected.

In the above technical solution, the method of cutting the metal bar is as follows: the second motor drives the saw blade to move to the vicinity of the metal bar to be cut at a fast forward speed, and then cuts at the working speed, and finally the second The second motor drives the saw blade to reset at a fast rewind speed.

The beneficial effects of the present invention are:

1) Since the 2500 mm long bar (usually cut into small pieces of 2 to 120 mm) is placed on the rack and fed by a manipulator (a mechanical handling combination composed of a feeding device and a clamping device), thus Realized feeding automation, greatly reducing labor intensity.

2) The automatic cutting mechanism uses a servo motor to control the feed of the saw blade, which can conveniently control the feed speed and cutting stroke. So as to realize high-efficiency and high-quality production.

3) Using cutting fluid for automatic cooling and automatic feeding, which is convenient for automatic production.

4) Due to the production method of automatic feeding and automatic material cutting, the manpower has been liberated. What the operator has to do is to add a new metal bar after a long metal bar is cut, and other tasks are automatically performed by the machine. Finish. Therefore, a worker can easily take care of more than ten machines, or in other words, adopt the device of the present invention, and a worker can complete the workload that more than ten workers produce by traditional methods.

Description of drawings

Fig. 1 is the overall structural representation of the present invention;

Fig. 2 is an internal overall structure diagram of the present invention;

Fig. 3 is a top view structural schematic diagram of Fig. 2;

Fig. 4 is the structural representation of the first clamping device among the present invention;

FIG. 5 is a schematic side view of the structure of FIG. 4 .

In the figure, 1. material rack; 2. feeding device; 3. first clamping device; 4. second clamping device; 5. automatic cutting mechanism; 6. workbench; 7. baffle; 8. fumes Machine; 9. Circuit control system; 10. Alarm indicator light; 11. Cooling device; 12. Receiving box; 21. Feeding cylinder; 22. Guide rail; 31. The first clamping cylinder; 32. The first fixing fixture; 33 , the first movable fixture; 321, the through hole; 322, the elastic pressure part; 41, the second clamping cylinder; 42, the second fixed fixture; 43, the second movable fixture; 51, the saw blade; 52, the rotating motor; 53, Servo motor; 111, oil pump motor; 112, oil tank; 113, spray head; 114, filter screen.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings.

As shown in Figures 1, 2, 3, 4, and 5, an automatic feeding and cutting machine for metal bars includes an automatic feeding mechanism and an automatic cutting mechanism 5. The metal bars are placed on the material rack 1, and the metal bars One end of the cutting machine is placed into the automatic feeding mechanism, and the first cutting position is manually set in the automatic feeding mechanism. After the first cutting, the cut is the material head, which needs to be removed; after the material head is removed, start the automatic positioning method , through the adjustment of the position of the metal bar by the automatic feeding mechanism, the follow-up cutting position of the metal bar is finally positioned, and so on; Bar stock is cut.

Further, the automatic feeding mechanism includes a feeding device 2 and a clamping device. The feeding device 2 controls the clamping device to adjust its position, so as to position the metal bar in the clamping device for cutting position.

Wherein, the automatic cutting mechanism 5 includes a saw blade 51 , a first motor for controlling the rotation of the saw blade 51 , and a second motor for controlling the advancement and retreat of the saw blade 51 toward the metal bar. The first motor is a rotating motor 52, and the second motor is a feed servo motor 53. The servo motor 53 can accurately control the advance and retreat speed and cutting stroke of the saw blade 51 to the metal bar, thereby achieving high efficiency and high quality. production. Saw blade 51 is fixed in one end of rotating shaft, and the other end of this rotating shaft is fixed with pulley, and the output shaft of rotating motor 52 is also provided with pulley, and these two pulleys are driven by belt. A box containing cutting chips is arranged below the cutting station.

Further, the clamping device includes a first clamping device 3 and a second clamping device 4, and the second clamping device 4 and the first clamping device 3 are sequentially arranged along the conveying direction of the metal bar; wherein, the second clamping device The feeding device 4 is driven by the feeding device 2 to move relative to the first clamping device 3 to adjust the position of the front end of the metal bar in the first clamping device 3 to locate the cutting position; after the cutting position is positioned, it will automatically cut The cutting mechanism 5 cuts the metal bar in the first clamping device 3 .

Wherein, the feeding device 2 includes a feeding cylinder 21 and a guide rail 22, the output shaft of the feeding cylinder 21 is connected with the second clamping device 4; The device 3 moves relatively.

Wherein, the first clamping device 3 includes a first clamping cylinder 31, a first fixed clamp 32 and a first movable clamp 33, and the first clamping cylinder 31 drives the first movable clamp 33 to move to realize the first movable When the clamp 33 is close to the first fixed clamp 32, the metal bar is clamped; when the first movable clamp 33 is far away from the first fixed clamp 32, the metal bar is released. The first fixing fixture 32 is provided with a through hole 321 conforming to the cross-sectional shape of the metal bar, and the through hole 321 can allow the metal bar to pass through; wherein, the outer side of the through hole 321 is disconnected and formed with The spring pressing part 322 of the spring pressing structure, when the first movable clamp 33 is close to the first fixed clamp 32, the first movable clamp 33 squeezes the spring pressing part 322, and the spring pressing part 322 is pressed against the metal bar in the through hole 321. Press to achieve the clamping effect. Concretely, the bottom of the first movable clamp 33 is hinged on the fixed part, and the middle part of the first movable clamp 33 is provided with a hinge, and one end of the hinge is connected with the output shaft of the first material clamping cylinder 31, and the first material clamping cylinder 31 passes through The drive output shaft expands and contracts to drive the hinge, and the hinge links the first movable clamp 33 to rotate around its bottom to realize clamping and loosening of the first movable clamp 33 and the first fixed clamp 32 . Wherein, the upper part of the first movable clamp 33 is provided with a slit for the saw blade 51 to enter, and the upper part of the first fixed clamp 32 is also provided with a corresponding slit for the saw blade 51 to enter. The through hole 321 is located on the upper part of the first fixing fixture 32 , and the gap also divides the through hole 321 into two parts. The saw blade 51 cuts the metal bar passed through the first fixing fixture 32 in the gap. Preferably, the first fixing fixture 32 is provided with a sensor for detecting the alignment of the ends of the metal bar, so as to adjust the stroke of the first feeding cylinder 21 .

Wherein, the second clamping device 4 comprises a second clamping cylinder 41, a second fixed clamp 42 and a second movable clamp 43, and the second clamping cylinder 41 controls the second movable clamp 43 to approach the second fixed clamp 42 so that the metal Bar stock holding.

Further, the automatic positioning method of the first clamping device 3, the second clamping device 4 and the feeding device 2 for the subsequent cutting position of the metal bar (except for the first time) is: the front end of the metal bar is clamped on the In the first material clamping device 3, the second material clamping device 4 is loosened, and the feeding device 2 drives the second material clamping device 4 away from the first material clamping device 3, and stops after reaching a preset position, and the second material clamping device 4 clamps Tight, the first clamping device 3 is released, and the feeding device 2 drives the second clamping device 4 to move closer to the first clamping device 3 again, so as to adjust the subsequent cutting position of the front end of the metal bar (except for the first time). The position in the first clamping device 3; after the subsequent cutting position is determined, the first clamping device 3 is clamped. After completing the positioning of the cutting position of the metal bar, the cutting is performed. After the cutting, the first movable clamp 33 continues to clamp the cut metal bar block, the second movable clamp 43 is released, and the feeding cylinder 21 drives the second clamp. The clamping device 4 moves away from the first movable clamp 33, and after moving to a predetermined position, the second movable clamp 43 clamps the remaining part of the metal bar. After the second movable clamp 43 is clamped, the first movable clamp 33 Unclamp, and the feeding cylinder 21 drives the second clamping device 4 and the rest of the metal bar to move closer to the first movable clamp 33, and the end of the rest of the metal bar will be located in the first fixed clamp 32. The metal bar stock blocks are ejected, and move until the follow-up cutting position of the remaining metal bar stock is positioned; after the follow-up cutting position is positioned, the first movable clamp 33 clamps the metal bar stock, and the first movable clamp 33 clamps After finishing, do the next cut, and repeat. The cut metal bar block is automatically dropped into the material receiving box 12 positioned at the side after being ejected, and will pass through two-stage steps before falling into the material receiving box 12 to reduce collisions. Moreover, each time cutting is performed, the first clamping device 3 and the second clamping device 4 are in a clamping state.

Further, the automatic feeding mechanism and the automatic cutting mechanism 5 are arranged on a workbench 6, and the workbench 6 is provided with a cooling device 11 for cooling the cutting station, and the cooling device 11 includes an oil pump motor 111, an oil tank 112 and spray head 113, the oil pump motor 111 pumps up the cutting fluid in the oil tank 112 and sprays the cutting fluid from the spray head 113 through the pipeline, and the sprayed cutting fluid flows back into the oil tank 112 from the workbench 6. Preferably, before the cutting fluid returns to the oil tank 112, it needs to pass through the filter screen 114 arranged on the oil tank 112 to filter the cutting chips doped in the cutting fluid, so as to facilitate the recycling of the cutting fluid.

Further, it also includes a baffle 7 wrapping the workbench 6 and the equipment thereon, the baffle 7 is provided with a range hood 8, an alarm indicator light 10 and a circuit control system 9, and the circuit control system 9 and the range hood 8. The alarm indicator light 10, the automatic feeding mechanism and the automatic cutting mechanism 5 are electrically connected. The baffle 7 is used to prevent the cutting chips from splashing on the operator and ensure the personal safety of the operator; and because part of the cutting fluid will generate oil fume during use, the internal working environment is separated from the outside, and the oil fume The oil fume in the baffle plate 7 is sucked away by the machine 8. The baffle plate 7 is provided with a transparent window that can be opened and closed, and the transparent window is provided with a handle for pulling. The transparent window can observe the working conditions in the baffle plate 7 . The circuit control system 9 includes a display screen and control buttons.

Wherein, the method of cutting the metal bar is as follows: the second motor drives the saw blade 51 to move to the vicinity of the metal bar to be cut at a fast forward speed, and then cuts at the working speed, and finally the second motor The saw blade 51 is driven to reset at a fast rewind speed.

Working principle of the present invention:

Prepare, place the 2500mm long metal bar on the material rack 1, the first material clamping device 3 and the second material clamping device 4 are all in the loosened state at this time, put the metal bar material on the second clamping material device 4, and one end of the metal bar passes through the through hole 321 of the first clamping device 3. The cutting position for the first cutting of each metal bar is initially positioned in a "manual" manner, and the following automatic fixed-length feeding is performed on the subsequent cutting position. The first cut of each new material is the "material head", which is generally not the product we need.

Automatic feeding, the front end of the metal bar is clamped in the first clamping device 3, the second clamping device 4 is released, the feeding device 2 drives the second clamping device 4 away from the first clamping device 3, and reaches the predetermined Stop after setting the position, the second clamping device 4 is clamped, the first clamping device 3 is released, and the feeding device 2 drives the second clamping device 4 to move closer to the first clamping device 3 again to adjust the front end of the metal bar The position of the follow-up cutting position (except for the first time) in the first clamping device 3; after the follow-up cutting position is determined, the band cutting position on the metal bar is aligned with the saw blade 51, and after the cutting position is positioned, The first clamping device 3 is clamped. After the clamping of the first clamping device 3 is completed, the automatic cutting program is started.

Automatic cutting, after the positioning of the metal bar, the saw blade 51 rotates at high speed under the drive of the rotary motor 52, and moves quickly to the cutting position of the metal bar in the first clamping device 3 under the drive of the servo motor 53, Then move forward at a slow speed and cut off the metal bar stock. After the cutting stroke is completed, the saw blade 51 is quickly retracted under the drive of the servo motor 53.

Cooling, during the cutting process, the oil pump motor 111 is started to run, and the cutting fluid in the oil tank 112 is sprayed and cooled from the spray head 113 to the cutting station. The cutting fluid gathers on the workbench 6 and returns to the oil tank 112, and is reused after being filtered.

The above embodiments are only intended to illustrate rather than limit the present invention, so all equivalent changes or modifications made according to the methods described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims (10)

1. An automatic feeding and cutting machine for metal bars, characterized in that: it includes an automatic feeding mechanism and an automatic cutting mechanism; wherein, the automatic feeding mechanism includes a feeding device and a clamping device, and the feeding device controls the clamping device to carry out position adjustment, so as to locate the cutting position of the metal bar in the clamping device; the automatic cutting mechanism includes a saw blade, a first motor for controlling the rotation of the saw blade, and a device for controlling the advance and retreat of the saw blade to the metal bar second motor. 2 . The automatic feeding and cutting machine for metal bars according to claim 1 , wherein the first motor is a rotary motor, and the second motor is a feed servo motor. 3 . 3. The automatic feeding and cutting machine for metal bars according to claim 1, characterized in that: the clamping device comprises a first clamping device and a second clamping device, the second clamping device and the second clamping device A clamping device is arranged in turn along the conveying direction of the metal bar; wherein, the second clamping device is driven by the feeding device to move relative to the first clamping device, so as to adjust the front end of the metal bar in the first clamping device position, and locate the cutting position; after the cutting position is positioned, the automatic cutting mechanism cuts the metal bar in the first clamping device. 4. The automatic feeding and cutting machine for a metal bar according to claim 3, wherein the feeding device includes a feeding cylinder and a guide rail, and the output shaft of the feeding cylinder is connected to the second clamping device for transmission; The cylinder drives the second clamping device to move relative to the first clamping device along the direction of the guide rail. 5. The automatic feeding and cutting machine for metal bars according to claim 3, characterized in that: the first clamping device includes a clamping cylinder, a fixed clamp and a movable clamp, and the clamping cylinder drives the movable clamp to carry out Move to clamp the metal bar when the movable clamp is close to the fixed clamp, and loosen the metal bar when the movable clamp is far away from the fixed clamp. 6. An automatic feeding and cutting machine for metal bars according to claim 5, characterized in that: said fixing fixture is provided with a through hole conforming to the cross-sectional shape of the metal bar, and the through hole can accommodate metal The bar passes through; wherein, the outer side of the through hole is broken, and a spring pressing part with a spring pressing structure is formed. When the movable clamp approaches the fixed clamp, the movable clamp squeezes the spring pressing part, and the spring pressing part is located in the through hole The inner metal bar is extruded to achieve the effect of clamping. 7. The automatic feeding and cutting machine of a metal bar according to claim 3, characterized in that: the first clamping device, the second clamping device and the feeding device automatically adjust the cutting position of the metal bar. The positioning method is: the front end of the metal bar is clamped in the first clamping device, the second clamping device is released, the feeding device drives the second clamping device away from the first clamping device, and stops after reaching the preset position , the second clamping device is clamped, the first clamping device is released, and the feeding device drives the second clamping device to move closer to the first clamping device to adjust the cutting position of the front end of the metal bar in the first clamping device. The position in the device; after the cutting position is determined, the first clamping device clamps, and the second clamping device continues to maintain the clamping state to prepare for cutting. 8. A metal bar material automatic feeding and cutting machine according to claim 1, characterized in that: the automatic feeding mechanism and the automatic cutting mechanism are arranged on a workbench, and the workbench is provided with a The cooling device for cooling the cutting station. The cooling device includes an oil pump motor, an oil tank and a spray head. The oil pump motor pumps up the cutting fluid in the oil tank and sprays the cutting fluid from the spray head through the pipeline. The sprayed cutting fluid Drain back from bench to tank. 9. An automatic feeding and cutting machine for metal bars according to claim 8, characterized in that: it also includes a baffle that wraps the workbench and the equipment on it, and the baffle is provided with a range hood , alarm indicator light and circuit control system, the circuit control system is electrically connected with range hood, alarm indicator light, automatic feeding mechanism and automatic cutting mechanism. 10. An automatic feeding and cutting machine for metal bars according to claim 1, characterized in that: the method of cutting the metal bars is: the second motor drives the saw blade to move at a fast forward speed Near the position to be cut of the metal bar, then cut at the working speed, and finally the second motor drives the saw blade to reset at the fast rewind speed.