JPS6179562A - Weighting transmitter for cutting machine - Google Patents

Abstract

PURPOSE:To improve a cut work in quality ever so better, by coupling a load outputting part, outputting load to be secured from weight of a weight 2, and a load acting part to a work material with each of piston at both sides of a cylinder and transmitting the load to them via a transmitting fluid. CONSTITUTION:The vicinity of a left end part of a lever arm rod 51 of an automatic weighter 30 is set down to a fulcrum 0, and an intermediate part of the rod 51 is pivotally connected to an upper end of a driving rod 15, making it a working point P. Each weight 2 is made to act as a force point Q capable of shifting along the rod 51 free of forward and backward movements. These weights 2 are connected through a cord 54 of the length specified, and when it moves in an arrow C direction along the rod 51, load of a piston 5 follows movement of a self-propelled type weight 2a, and after moving a portion for length of the cord 54, this load increases according to movements of both weights 2a and 2b, whereby the load is transmitted to a piston 6 via oil 14 and given to an elastically rocked material 3 by a support device 29, thus a bound shock of the material 3 is absorbed.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a load transmission device for a cutting machine that applies a predetermined weight to a workpiece material to cut it.

(Prior Art) Generally, a multi-blade cutting machine is used when slicing or grooving a workpiece material such as ceramic into a thin plate. This multi-blade cutting machine uses a blade 41 constructed by arranging a large number of grinding bands 41a in parallel (in the front and back directions of the drawing) with gaps corresponding to the cutting width, as shown in FIG. 4 (principle structure diagram). The blade 41 is reciprocated in the direction of arrow A-A', and the material 42 to be processed is raised while applying a predetermined load to the blade 41 from below to cut the material 42. In this case, an abrasive mixed with diamond or silicon carbide abrasive grains is appropriately supplied between the grinding band 41a and the workpiece material 42 to perform grinding.

Incidentally, in such a multi-blade cutting machine, the load applied to the workpiece material is extremely important.

That is, in order to perform appropriate cutting, it is necessary to apply a load of 100 to 500 g from the start of cutting to the initial stage of cutting, and increase the load in the range of 500 g to 15 kg until near the end of cutting.

Moreover, the amount of load required depending on the type of material to be processed is calculated in advance, and if the load is too large than necessary, the cutting will be rough and result in poor quality, while if the load is too small, the cutting time will be reduced. becomes long and inefficient. Therefore, this type of cutting machine is usually equipped with a weighting device for controlling the weight.

The conventional weighting device uses a lever mechanism 43 as shown in FIG. 4, and uses a lever mechanism 43 as shown in FIG. 45, and at one end of this arm rod 44 is a material support stand 46 on which the workpiece material 42 is placed.
At the same time, a weight supporter 47 for supporting iron weights is attached to the other end of the arm rod 44, and weights 48 are stacked one by one on this weight supporter 47 at predetermined time intervals (for example, 30 minutes). The resulting load was applied directly to the workpiece material 42 via the lever mechanism 43.

(Problem that the invention attempts to solve) However, the conventional cutting machine described above has the following problems.

First, in order to directly transmit the load via the lever mechanism 43, the installation position and installation space of the loading device are limited to the workpiece material 4.
It is determined by the position of 2.

Therefore, the degree of freedom for arrangement becomes extremely small, leading to an increase in the size of the cutting machine, and since the position of the weight supporter 47 is also determined, there is a possibility that workability may be degraded depending on the installation location.

Second, although the lever mechanism 43 can buffer and absorb the bouncing phenomenon during cutting of the workpiece material 42 to some extent, it is not sufficient, and the adverse effect of the bouncing phenomenon on the cutting quality cannot be sufficiently prevented.

Third, cutting is performed by grinding the upper surface of the workpiece material 42 using the grinding band 41.
It is desirable to abut parallel to the grinding band 41a and move upward in parallel, but in the conventional lever mechanism 43, the workpiece material 42 is oblique to the grinding band 41a, which has the disadvantage of deteriorating the cutting quality. There is. Note that although it is technically possible to make them abut in parallel, it causes problems such as complicating the structure.

Therefore, the present invention greatly increases the degree of freedom in the positioning of the weighting device, reduces the overall size of the cutting machine, improves ease of use, sufficiently buffers and absorbs the bouncing of the workpiece material, and furthermore constantly grinds the workpiece material. The present invention provides a weight transmission device that can improve cutting quality by maintaining the weight parallel to the hand.

(Means for Solving the Problem) In order to solve the problem, the present invention provides a cutting method in which the blade is raised to cut the material while applying a predetermined load to the material from below. The main components of the load transmission device according to the present invention, which is applied to a machine, are as shown in FIG. A load output part PO that outputs a load and a load application part PI to the workpiece material 3 are respectively connected to pistons 5 and 6 inserted on both sides of the cylinder 4, and the transmission of, for example, oil sealed between each piston 5 and 6 is performed. It is characterized in that the load is transmitted via the service fluid S.

(Action) Next, the action will be explained. In FIG. 1, when a load is applied to the piston 5 from the load output part PO, the piston 5 moves forward (downward in the figure), and the other piston 6 moves backward (in the figure) according to Pascal's principle. (upward). In other words, the load output of the load output section P,0 is transmitted to the load application section P through the transmission fluid S. The transmitted load is further applied to the workpiece material 3 via the material support device.

In this case, by selecting the diameter, length, etc. of the cylinder 4, the load transmission ratio, the location of the cylinder 4, the buffer capacity, etc. can be changed as appropriate.

(Example) Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

First, in order to clarify the present invention, the overall structure of a multi-blade cutting machine equipped with an automatic weighting device according to the present invention will be explained with reference to FIG. This figure is a front view showing a schematic configuration of a multi-blade cutting machine.

The multi-blade cutting machine indicated by the reference numeral 20 in the figure is equipped with a slide frame 22 that slides on a bed 21 in the left-right direction, that is, in the direction of B-B' in the figure.
Install. As described above, the blade 23 is made up of a large number of grinding bands 23a which are arranged in parallel to each other with gaps corresponding to the cutting width and arranged in the front and back directions of the drawing. Member No. 25 is connected, and a crank pin 26a of a crank plate 26 which also serves as a flywheel is inserted into this bin guide groove 24.

Note that the movement stroke of the blade 23 can be adjusted by this pin 26a. The rotation of the drive motor 28 is transmitted to the crank plate 26 via the belt 27, and this rotation is converted into reciprocating motion of the slide frame 12.

On the other hand, the workpiece material 3 is supported below the blade 23 by a material support device 29, and the load from an automatic loading device 30 is transferred to the material support device 29 to the blade 23 via a load transmission device 1 constructed according to the present invention. It is given in the direction of.

Note that an abrasive shower 31 is arranged above the workpiece material 3, and the abrasive M entering the tank 32 passes through a pump 33 and a feed pipe 34 and is discharged from the abrasive shower 31 onto the upper surface of the workpiece material 3. Ru.

As a result, the powder, silicon carbide abrasive grains, etc. mixed in the @M agent M enter between the grinding band 23a and the workpiece material 3, and cutting is performed. Note that the reference numeral 35 indicates an abrasive cooling device, and the reference numeral 36 indicates a stirring device.

Next, the load transmitting device 1 according to the present invention will be specifically explained with reference to FIG. The figure is a partially sectional front view of the device and related devices.

First, the configuration of the weight transmission device 1 will be explained. The cylinder 4 in the device 1 includes a driving cylinder part 9 vertically installed on the machine body, a driven cylinder part 10 attached to the lower end of the material support device 29, and an arbitrarily bent part that connects these cylinder parts 9 and 10 in communication. It consists of a flexible communication pipe 11. Each cylinder part 9,1
0, insert the piston 5.6 into each piston 5 and 6.
Oil 14 is sealed in between. Further, a driving rod 15 which is penetrated and exposed to the outside is coupled to the piston 5 and functions as the load output section PO, and a driven rod 16 which is penetrated and exposed to the outside is coupled to the piston 6 and functions as the load application section PI. let In this cylinder 4,
By making the inner diameters (cylinder diameters) of the driving cylinder section 9 and the driven cylinder section 10 different, the load transmission ratio can be changed.

Furthermore, the communication pipe 11 is bendable by using a flexible material, for example, and by arbitrarily selecting its length, the load can be input to the location of the drive cylinder section 9, that is, the drive cylinder section 9. The arrangement position and transmission direction of the automatic weighting device 30 can be changed arbitrarily. Furthermore, by making the inner diameter of the driven cylinder portion 10 relatively small, it is possible to provide an effective buffering and absorbing function against bouncing of the workpiece material 3. Note that the driven cylinder portion 10 is not fixed to the machine body and can move together with the material support device 29.

Next, the related devices will be explained. First, the automatic weighting device 30 is equipped with a lever mechanism 50, and the vicinity of the left III end of this lever arm 51 is pivoted to the fuselage as a fulcrum O, and the middle part of the arm 51 is The upper end of the drive rod 15 is pivotally connected to the arm rod 51 with a predetermined clearance in the longitudinal direction to form a point of action P.

Further, the weight 2, which can move forward and backward along the arm rod 51, is provided on the arm rod 51 and acts as a point of force Q. The weight 2 in the embodiment consists of a front weight 2a and a rear weight 2b, each of which has a string 5 having a predetermined length.
Connect each other with 4. The front weight 2a is, for example, an active (self-propelled) type that can move on a rail attached along the arm rod 51, and the rear weight 2b is, for example, a passive type that is attached to an idling shaft and pulled by the front weight 2a. On the other hand, the material support device 29 has a support stand 60 at its upper end, a support shaft 61 connected to the driven rod 16 of the piston 6 at its lower end, and a guide tube 62 that guides the support shaft 61 in a vertically slidable manner.
The guide cylinder 62 and the driven cylinder portion IO are coupled to each other. The front outer wall of the guide cylinder 62 in the vertical middle part is connected to the blade 23 by a rotary support part 63 fixed to the fuselage.
It is supported rotatably in the direction of movement. In addition, the guide tube 62
Elastic blocks (loose IIR material) 64, 65 made of urethane rubber, silicone rubber, etc. are interposed between the left and right walls of the body and the body.

As a result, the guide tube 62 elastically swings around the rotation support portion 63 within a predetermined angular range.

Next, the overall operation of the load application system including the function of the load transmission device 1 will be explained.

FIG. 1 shows the state immediately before the start of cutting. Now, in this state, when the weight 2 is moved from the left end of the arm rod 51 to the right direction (in the direction of arrow C) along the arm rod 51, the force (load) applied to the piston 5 changes from approximately zero to the moving distance according to the principle of leverage. will increase in proportion to. In this case, the force applied to the piston 5 initially increases as the front weight 2a moves, and after the front weight 2a moves by the length of the string 54, the force applied to the piston 5 increases.
It increases as both a and the rear weight 2b move (see FIG. 3). The force applied to the piston 5 is transmitted to the other piston 6 via the oil 14, and the force applied to the piston 6 is further applied to the workpiece material 3 via the driven rod 16 and the support shaft 61.

In addition, since the workpiece material 3 can be elastically swung in the direction of movement of the blade 23 by the material support device 29, the workpiece material 3 bounces, that is, the impact on the workpiece material due to the step difference in the grinding band 23a caused by wear. can be effectively buffered and absorbed, and furthermore, the grinding agent M can effectively enter the gap between the grinding band 23a and the grinding band 23a caused by the swinging of the workpiece material 3.

Although the preferred embodiments have been described above, the present invention is not limited to these embodiments. For example, the automatic weighting device 30 can be applied to any configuration, and the material supporting device 29 may be omitted and only the material supporting stand may be used. Furthermore, the communication pipe 11 of the cylinder 4 may be of a predetermined rigid type, and the piston 6 of the driven cylinder portion 10 and the support shaft 61 may be connected by a flexible member. Furthermore, when the communication pipe 11 is made flexible, the drive cylinder 9 is not directly fixed to the aircraft body, but is arranged approximately perpendicular to the arm rod 51, and the side of the cylinder 9 is attached to the arm rod with a bracket or the like. A so-called trunnion type may be adopted in which the support member 51 is rotatably supported in a longitudinal direction. Other arbitrary changes in details are permitted within the scope of the present invention as long as they do not overshadow the gist of the present invention.

(Effects of the Invention) As described above, the load transmission device for a cutting machine according to the present invention is capable of cutting a workpiece material by lifting the material while applying a predetermined load to the blade from below. The load output part that outputs the load and the load application part to the material are respectively connected to pistons inserted on both sides of the cylinder, and the load is transmitted via the transmission fluid sealed between each piston. As a result, the following effects are obtained:

First, since the load transmission direction, length, etc. can be set arbitrarily, the degree of freedom in the installation position of the loading device can be greatly increased, making the entire cutting machine smaller and easier to use. can be dramatically improved.

Second, by selecting the cylinder diameter and using the transmission fluid, bouncing of the workpiece material during cutting can be effectively buffered, and cutting quality can be greatly improved.

Thirdly, since the workpiece material can always be maintained parallel to the grinding hand, the cutting quality can be further improved.

[Brief explanation of the drawing]

Fig. 1 is a front view of a load transmitting device and related devices according to the present invention, Fig. 2 is a front view showing a schematic configuration of a multi-blade cutting machine equipped with the same device, and Fig. 3 is a diagram showing time vs. time during weight movement. A characteristic diagram showing changes in weight, FIG. 4 is a front view of a weighting device according to a conventional example. In the drawings, 1... weight transmission device, 2... weight. 3...Work material, 4...Cylinder, 5゜6...Piston, 23...Blade, PO...
・Load output part, PI...Load action part. S...Transmission fluid.

Claims (1)

[Claims] 1. In a cutting machine that applies a predetermined load to a workpiece material from below and raises the blade to cut the material, a load output section that outputs a load obtained by using the weight of a weight, etc.; A load transmission device for a cutting machine, characterized in that parts that apply a load to a workpiece material are connected to pistons inserted on both sides of a cylinder, and the load is transmitted via a transmission fluid sealed between each piston. .