KR100572981B1 - The uppor plate up and down device of a cutting machine - Google Patents

Abstract

The present invention relates to an upper plate elevating device of a model cutting machine.

More specifically, in lifting and lowering the upper plate on which the mold is mounted on the bottom surface, the elevating speed of the upper plate is increased by raising and lowering the crank formed by applying mechanical and hydraulic methods simultaneously to maximize productivity and greatly reduce noise. The precision and durability are also greatly increased.

In the configuration, the fixing plate is fixed to the upper part of the frame, and the upper plate and the pair of lifting frames are connected and mounted by four posts on the upper, lower, front, and rear sides of the fixing plate. And a drive shaft on which a wheel rotated by a belt is mounted and a pinion is mounted at a predetermined position on the other end, and a spur gear that engages and drives the pinion, and an axis having an eccentric cam shaft integrally mounted at both ends thereof. It is made by installing an operating ring together with a bearing at both ends, and installing a crank in which a rod of a hydraulic cylinder hinged to a lifting frame is fixed to a lower portion of the operating ring.

In addition, by mounting the stopper at the corner position of the fixed plate is configured to be able to accurately control the falling position of the top plate.

Therefore, in the present invention, the crank composed of an operating ring and a hydraulic cylinder connected to the eccentric cam lifts the upper plate so that the upper plate can be elevated at high speed, and at the same time, the upper and lower points in the process of lifting the upper plate by the hydraulic cylinder and the stopper. As the load generated at the bottom dead center can be minimized, high-speed punching is performed to maximize productivity, resulting in increased durability of the model cutting machine, improved machining precision, and noise reduction.

Model cutters, drives, hydraulic cylinders, cranks.

Description

The uppor plate up and down device of a cutting machine

1 is an exemplary view showing an embodiment of the present invention simultaneously showing the elevated state of the top plate.

Figure 2 is a longitudinal cross-sectional view showing an embodiment of the present invention.

3 is a plan view of the present invention.

4A to 4C are front view views showing the operation of the present invention.

5 is a hydraulic circuit diagram of the present invention.

The present invention relates to a top plate elevating device of the model cutting machine.

More specifically, it is to apply the hydraulic method and the mechanical method at the same time to obtain various effects such as improving the cutting precision, maximizing productivity, increasing durability, and reducing noise.

As is well known, a conventional model cutter has a hydraulic model cutter using a hydraulic cylinder, and a mechanical method using a crank shaft and a crank rod.

The above-mentioned hydraulic method is mostly configured to elevate the upper plate mounted with the mold on the bottom by using a hydraulic cylinder and a plurality of links. The hydraulic motor has the advantages of high strength, high cutting precision, and durability, but a large capacity hydraulic motor should be used. This results in a lot of energy loss, large equipment volume due to oil tanks and cooling devices, noise and vibrations caused by hydraulic pumps and cylinders, and slow speed, resulting in low productivity. Follow.

The mechanical method is configured to raise and lower the upper plate by using the cam and crankshaft, so high speed work results in high productivity and high instantaneous energy, resulting in high output, but impact and vibration occur severely at the top dead center and the bottom dead center. As a result, the parts that convert the rotational motion to the elevating motion are easily worn or broken, and the cutting edge is reduced as time goes by, and the lifespan of the equipment is shortened.

Therefore, the present invention has been invented in view of the above-mentioned conventional problems, and in particular, by applying a hydraulic method using a hydraulic cylinder and a mechanical method using an eccentric cam shaft at the same time so that the hydraulic cylinder and the eccentric cam can act as a crank rod. The purpose of the invention is to provide a model cutting machine that can maximize productivity while maximizing productivity in model cutting, and also has high cutting precision.

Model cutting machine 100 of the present invention is a fixed plate (1) is mounted on the upper portion of the frame 102 is mounted on the base material 101 of the base material 100 'is mounted, and

An upper plate 2 located above the fixed plate 1 and mounted with a mold (not shown) having a predetermined shape on a bottom thereof;

Ascending and lowering of the upper plate 2 is made stable and accurate without shaking, and the upper plate 2 and the elevating frame 3 to be described below are fixed to the upper and lower ends through the corners of the fixing plate 1 to induce them to be lifted at the same time. Posts 30,

Lower ends of the posts 30 are fixedly coupled to the upper both sides, and a penetrated space 31 is formed in the center portion, and an inclined surface 32 is formed on both sides of the space 31 to be symmetrical, and a hydraulic cylinder is disposed at the bottom center portion. A lifting frame (3) hinged on the lower end of the (4),

A pair of guide blocks 5 mounted and fixed on the base panel 101 of the main body 100 'to guide the lifting frame 3 to be lifted stably without shaking,

The wheel 62, which is installed through the inside of the frame 102 and rotates at one end by an air clutch 61, a motor, and a belt (not shown), is mounted by a bearing and is disposed at a predetermined position inside the frame 102. A drive shaft 6 on which the pinion 63 is mounted,

A large spur gear 71 is installed inside the frame 102 at a predetermined distance from the drive shaft 6 and engaged with the pinion 63, and both ends have an eccentric cam shaft 72 formed therein. (7) and

Mounting the operating ring 74 together with the bearing 73 on the eccentric camshaft 72, the operating ring 74 is fixed to the rod and the connecting plate 75 of the hydraulic cylinder (4) and the crank 76 Constitute

The stopper 8 is mounted at each corner of the fixing plate 1, but the stopper 8 includes a worm shaft 82 on which the worm 81 is mounted and a worm wheel 84 on which a screw rod 83 is installed at the center thereof. (8) was configured to facilitate the fine adjustment.

In addition, the hydraulic cylinder 4 has a throttle valve 42, a solenoid valve 43, 43 ', a sequence valve 44, and a converter as shown in FIG. (45) and the three-way valve 46 and the compressor (47) for adjusting the air pressure by installing the pressure inside the hydraulic cylinder (4) itself by itself in addition to the force required for cutting work during the operation of the crank 76 Energy loss can be prevented.

Reference numeral 10 is a caster, 11 is a conveying belt, 12, 12 'is a conveying belt guide roller.

According to the present invention configured as described above, when the air clutch 61 is connected to the wheel 62 which is being rotated by a motor and a belt (not shown), the rotational force of the wheel 62 is transmitted to the drive shaft 6 to drive the shaft 6. When the pinion 63 mounted on the drive shaft 6 is rotated, the large spur gear 71 and the shaft 7 are rotated, so that the eccentric cam shaft formed at both ends of the shaft 7 is rotated. As the 72 is rotated, the crank 76 composed of the operating ring 74 and the hydraulic cylinder 4 is operated.

Therefore, the crank 76 is moved up and down by the rotational movement of the eccentric cam shaft 72, the lifting frame (3) is raised and lowered, and the upper plate is installed by the lifting frame (3) and four posts (30) When (2) is raised and lowered, the cutting object fed to the fixed plate (1) is cut.

In addition, in the present invention, since the stopper 8 is installed at the corner of the fixing plate 1, fine adjustment is possible according to the type, material, thickness, etc. of the cutting material, so that the lowering position of the upper plate can be set accurately. If you want to finely adjust the worm shaft 82 is rotated clockwise or counterclockwise, the worm wheel 84 meshed with the worm 81 also rotates clockwise or counterclockwise to shed the screw rod 83 Therefore, it is possible to artificially control the falling distance of the top plate.

Meanwhile, in the present invention, the crank 76 lifts and lowers the lifting frame 30 and the upper plate 2 by the high-speed rotation of the eccentric camshaft 72, and the lowering position of the upper plate 2 is stopped by the stopper 8. Since the upper plate 2 is configured to be determined, the load is severely generated from the moment when the lowering is controlled by the stopper 8, and the hydraulic cylinder 4 is configured by its hydraulic circuit configuration as shown in FIG. By adjusting the internal pressure by itself, the above load can be eliminated.

In other words, by the organic action of the stopper 8 provided at the corner of the fixing plate 1 and the hydraulic cylinder 4 constituting the crank 76, the cutting material can be precisely cut, as well as the cutting of the workpiece. In addition to the required force, the pressure control inside the hydraulic cylinder prevented energy loss.

Therefore, according to the present invention, the power of a motor (not shown) is transmitted to the wheel 62 by the clutch 61, thereby decelerating and rotating the spur gear 71 by the pinion 63, and thus the shaft 7 By rotating, the eccentric camshaft 72 formed at both ends of the shaft 7 is configured to operate the crank 76 composed of the operation ring 74 and the hydraulic cylinder 4 at high speed, so that the upper plate 2 is elevated at high speed. While cutting the workpiece very quickly and accurately, it is possible to prevent energy loss by adjusting the remaining force in the hydraulic cylinder (4) in addition to the force required to cut the workpiece.

In particular, in the present invention, the driving method using the crank rod is a high wear rate in the portion that converts the rotational motion into a linear motion by the impact occurs at the top dead center and the bottom dead center, and the vibration of the crank 76 Since the configuration is composed of the operation ring 74 and the hydraulic cylinder 4 which are coupled to the eccentric camshaft 72 together with the bearing, the hydraulic cylinder 4 is moved when the upper plate 2 reaches the top dead center and the bottom dead center. It is possible to operate very smoothly by mitigating the impact, and therefore the wear rate of the portion that the rotational movement is converted to the elevating movement is extremely low, so durability is increased and there is no impact noise, so that a quiet work is possible.

In addition, the hydraulic cylinder used in the present invention does not need a separate hydraulic tank or a hydraulic motor, such as a hydraulic motor, so that the volume of the model cutter itself is not large compared to the conventional model cutter using hydraulic pressure, so that the installation space is not limited. This will follow.

As described above, the present invention is configured such that the crank composed of the operating ring and the hydraulic cylinder by the eccentric camshaft converts the rotational motion into the lifting motion of the upper plate, and the upper plate can be elevated at high speed, and at the same time by the hydraulic cylinder and the stopper. As the hydraulic cylinder itself can minimize the overload and impact generated at the top dead center and the bottom dead center when the upper plate is raised and lowered by high pressure punching, the productivity is maximized by the high speed punching, which increases the durability of the model cutting machine, improves processing precision, reduces noise, etc. It is a very useful invention with the effect of.

Claims (3)

A normal fixing plate 1 on which the workpiece is placed and fixed to be mounted on an upper portion of the frame 102 mounted on the base panel 101 of the main body 100 '; Located on the top of the fixed plate (1) is a normal top plate (2) is mounted on the bottom of a predetermined shape (not shown); And, Ascending and lowering of the upper plate 2 is made stable and accurate without shaking, and the upper plate 2 and the elevating frame 3 to be described below are fixed to the upper and lower ends through the corners of the fixing plate 1 to induce them to be lifted at the same time. Posts 30; Lower ends of the posts 30 are fixedly coupled to the upper both sides, and a penetrated space 31 is formed in the center portion, and an inclined surface 32 is formed on both sides of the space 31 to be symmetrical, and a hydraulic cylinder is disposed at the bottom center portion. A lifting frame (3) hinged to the lower end of (4); and, A pair of guide blocks 5 mounted and fixed on the base panel 101 of the main body 100 'to guide the lifting frame 3 to be lifted stably without shaking; and A drive shaft 6 installed through the inside of the frame 102 and equipped with an air clutch 61 and a wheel 62 at one end thereof and a pinion 63 at a predetermined position inside the frame 102; A large spur gear 71 is installed inside the frame 102 at a predetermined distance from the drive shaft 6 and engaged with the pinion 63, and both ends have an eccentric cam shaft 72 formed therein. (7); and, The crank 76 is mounted to the eccentric cam shaft 72 together with the bearing ring 73 and the operation ring 74 is fixed to the rod and the connecting plate 75 of the hydraulic cylinder (4). );Wow, A stopper (8) mounted to each corner of the fixed plate (1); The upper plate lifting device of the model cutter, characterized in that consisting of. The method of claim 1, The stopper (8) is composed of a worm shaft (82) on which the worm (81) is mounted, and a worm wheel (84) on which a screw rod (83) is installed in the center, so that the fine adjustment of the stopper (8) is made. Top lift device of cutting machine. The method of claim 1, The hydraulic cylinder 4 includes a throttle valve 42, a solenoid valve 43, 43 ', a sequence valve 44, a converter 45, and a three-way valve 46 ) And the upper plate lifting device of the model cutter, characterized in that the pressure adjustment is automatically made when the load is acted on by a compressor (47) for adjusting the air pressure.

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