JPS6078523A - Apparatus for forming resin collecting grooves - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] This invention relates to a device for creating sap collecting grooves in trees such as rubber trees, and was commissioned by the Malaysian government, and the inventors conducted research and experiments for one and a half years. This was a successful mechanization of work.

Rubber forests in the tropics have a poor working environment due to pests, and it is not easy to dig each rubber tree every day to expose the sap collection grooves that were made yesterday, and to form new sap collection grooves.

An overview of the method for collecting raw rubber sap is to cut a collection groove with a slightly slanted V-shaped cross section halfway around the trunk of a rubber tree, and let the sap drip into a container from the end of the groove.

The sap solidifies, so cut downwards every day to renew the collection groove, and when you reach the bottom of the trunk, make a similar collection groove halfway around the other side and cut downwards one after another. The previous half will regenerate while you collect in the second half.

The key to creating (updating) this collection groove is to create a deep collection groove so that as much sap as possible can be collected, and to ensure that the area close to the woody part is left as necessary for the bark to regenerate.

The sap flows through the inside of the bark, close to the woody part, so the cut must be made deep and at a depth that does not cause the bark to become irreversible. Therefore, the conventional work is
The most skilled person makes only the starting part of the collecting groove, and the general worker maintains the cutting depth at the starting part and creates a collecting groove that goes halfway around the trunk.

At first, as shown in Figure 1, it was thought to mechanize a hand-held tool by simply giving it reciprocating motion, and an experimental machine for this purpose was relatively easily constructed. However, this mechanized tool was found to be unsuitable even for the simple tasks of the above-mentioned general workers. This is because, although the labor is reduced, it is more difficult to maintain a constant depth of the collection groove than with hand tools.

Note that a rotating blade like a milling cutter is more efficient than reciprocating the cutting edge, but it is unsuitable because chips get into the sap. A fully automatic cutting device was also considered, but there were many variables and the cost was unsuitable. It was difficult to even mass-produce the slightly curved cutting edge of conventional hand tools, but eventually we figured out how to mechanize the process of changing the direction of the cutting edge along the outer circumference of the trunk and holding it to dig at a constant depth. mosquito,
The problem was narrowed down to this.

After many changes in concept and research into prototypes, the concept of this invention was arrived at by narrowing down the goal to reducing the labor and mental burden of the above-mentioned general workers, and forming the starting point of the collection groove. Separate it and let an expert handle it as usual. A guide member is attached to the cutting edge to advance the blade while accurately maintaining the groove depth at the starting point, and also to keep the downward depth of cut constant.The guide member is used both to guide the cutting edge and to regulate the cutting depth. Useful,
That is what it is. Although fully automatic machines with built-in computers are not impossible, the conclusion is that semi-automatic tools of the above concept are the best way to reduce the burden on millions of workers.

First, I will give an overview of this invention that embodies the above concept.
It consists of a guide material that fits the sap collection groove with a ■-shaped cross section that has already been made on the outer periphery of the trunk of the rubber tree, and a guide material that is bent into a V shape that fits the above collection groove with a force of 1 in the direction of movement along the groove. A plate blade with a cutting edge and the above-mentioned guide material are fixed, and this is fitted into the above-mentioned collection groove.
A bark cutting machine with a V-shaped blade light, comprising: a main body with a handle to be moved along the sea; a reciprocating vibrating rod that is movably supported in the axial direction by the main body and has a mounting part for the plate blade at its tip, and an excitation device thereof; This sap collection groove making device is characterized in that a step for cutting is maintained between the cutting part and the guide material, and a rising part along the tree fJM section is arranged so as to vibrate back and forth without having a step for cutting.

Next, embodiments of the present invention will be described with reference to the drawings.

Figure 1 shows the tools conventionally used. Grip the handle and usually pull the cutting edge towards you to cut.

The V-shaped cutting edge has blades attached to the front and back, as it is used by experts to push when making the starting part of the collection groove.

Figure 2 shows a state in which the collection grooves were moved from the top to the bottom of the rubber tree 3, leaving groove marks around the trunk. The sap gushes out from the entire length of the collection groove and flows down the bottom of the groove, collecting liquid fl! 3 and fall into the container.

An embodiment of the present invention is shown in FIGS.

The main body 10 is made by integrating a handle 10a and a drive part 10b, and has a switch button/S in the middle part. The motor/2a that comes out from the side of the main body drive unit/θb can also be gripped like a handle. A guide material/
3 is fixed, and this is adapted to the collection groove and moved forward by pulling it toward X1. However, it is easier to use than conventional hand tools if the handle/θα is held in the right hand and the motor 72a is held in the left hand. That's about it.

In this example, the reciprocating vibrating rod // having a plate blade /ll attachment part on the part protruding from the tip of the main body 10 is a flat square rod with a hollow rectangular cross section extending through the entire length of the main body driving part 10b. It slides into the hole and vibrates back and forth. The amplitude is about 3 folds.

The reciprocating vibrating rod l/ has a pair of driven wheels /7 arranged and supported in a hollow part /g provided in the middle thereof with a gap in the rod axis direction.

The vibrating device for this vibrating rod // is connected to the pair of passive wheels 17.1 mentioned above.
Eccentric cam/A inserted between 7 and pivotally supported on the main body 10 side,
The drive mechanism includes gears/9 and motor/, 2α.

When the motor/2a rotates the circular eccentric cam/6, the front and rear passive wheels/7. The vibrating rod /l is reciprocated via /'7. Since the driven wheel 17 is fitted with a double-hole bearing on its outer periphery, it vibrates lightly back and forth due to the drive of the cam/O. The drive shaft of the Naorim/O is supported on the main body 1O side through a through hole with a margin corresponding to the amplitude of the vibrating rod// side.

Power is supplied to the motor 2a from an electric wire connected to the end of the handle 10α to the inside of the main body θ, and is delivered to the motor 2a via the left button switch.

The adoption of the guide material and the combination of the knife and the plate blade are important factors for the success of this invention.
An example of this is shown in Figure 7.8.

In this case, the guide member 13 is made of resin, has a mounting hole,
It is fixed to the main body /θ with a screw through a guide holder /3α attached to the lower surface of the tip of the main body 10 (see Fig. 5.9). The guide material attachment part of holder/3α is bent at a right angle so that the square rod handle of guide member/3 can be held in the correct direction and fixed with a screw. The V-shaped light end that fits into the collection groove of the guide member /3 is thin and is moved by operating the main body IO so that its front and rear surfaces are kept perpendicular to the direction of the collection groove. Notch edge 20 where the rear edge is slightly notched from the lower surface in contact with the groove of this guide material/3 to the rising part along the woody part.
is provided so that the cutting edge can be inserted into this space (No. 9).
(See Figure 10).

The board blade/da has a mounting part bent at right angles that can be fixed with screws on two sides of the tip of the prismatic vibrating rod// to regulate and fix the direction of the blade, and the cutting edge is as described above. It is bent in a V shape. Its production involves shaping and polishing the blade material in a flat state.
After bending with a press, heat treatment and final polishing made mass production possible. As shown in Figure 10, the V-shaped blade light is the part where the bark A cuts / part, and the tip side is the rising part / ll along the woody part B.
b.

The bark cutting part /g α of the ■-shaped blade light of the board blade i maintains a step (or gap) α for cutting between it and the guide material /3, and stands up along the woody part B1) @ /qb is the step for cutting An important feature is that it is arranged so that it vibrates back and forth.

As a result, as shown in Fig. 12, the plate blade /3 is
The collection groove surface is cut with a thickness of step α to produce continuous chips C. The rising portion along the woody part B is not cut, and the cutting only proceeds along the groove wall. Therefore, the depth of cut at the starting point of the collection groove created by the expert is maintained, and only the groove surface is cut to a constant depth. The operator only has to hold the main body 10 and move the guide member/3 at the tip by fitting it into the collection groove made the previous day and sliding it. With this method, the groove surface can be cut to the correct depth, and there is no need to accidentally cut into areas that should be left along the woody part.

As explained above with reference to one embodiment, this invention is the most effective mechanized form in the current state of the work of creating sap collecting grooves, excluding the creation of the starting point of the collecting groove which requires a high degree of experience and skill, and It is intended as a semi-automatic tool for general workers that maintains the depth of the groove at the starting point and cuts the groove without being shallow or deep. The device can be varied and applied in a variety of ways depending on the well-known techniques of the designer as long as it satisfies the respective functions. The bark cutting part of the V-shaped cutting edge must maintain a step for cutting between it and the guide material, and the rising part along the woody part must be arranged so that it vibrates back and forth without a step.

In order to adjust the level difference, it is easy to consider making the relative position between the guide material and the cutting edge adjustable.

However, as a single-purpose tool, an embodiment without an adjustment mechanism is practical.

This invention analyzes and researches sap collection work, divides it into those that require a high degree of experience and skill, and those that do not, and presents the future development goal of mechanizing the latter first.

The device of this invention has been designed to provide dramatic relief to workers who have traditionally been concerned about the direction of the cutting edge, the depth of cut into the groove surface, and dangerous cuts into the rising parts of wood. This brought about a reduction in the negative phase.

According to this invention, the cutting edge is attached to a reciprocating vibrating rod and is automatically vibrated back and forth by the vibrating device, thereby improving cutting speed and reducing labor. The cutting edge always vibrates at a fixed position immediately behind the guide material, and the guide material fits into the pre-made collection groove, so if you slide the material into the groove, the smoothness unique to vibration cutting will allow you to cut the material to a certain thickness. Chips are continuous. Furthermore, since there is no cutting step between the rising part of the V-shaped blade light and the guide material, the possibility of the conventional failure of accidentally cutting into the woody part is eliminated.

■Shape blade It is difficult to make a board blade that cuts well only at the bark incision, but not at all at the rising part along the woody part. The cutting edge of this invention cuts well on both sides, but only the rising part is blocked by a guide material so that it cannot be cut with a sharp angle, making it easier to manufacture a plate blade.

With this invention, the labor of rubber plantation workers around the world will be reduced, work efficiency will be improved, the quality of the collecting groove will be improved to increase and stabilize the amount of collection, and the accident of not being able to regenerate the bark due to excessive cutting will be eliminated. What we gain will greatly contribute to the promotion of technology and industry in this area.

[Brief explanation of drawings]

Figure 1 is a perspective view of a conventional hand tool, Figure 2 is an explanatory diagram of the external appearance of a sap collecting groove made in the trunk of a komu tree, and Figures 3.4 are an elevation view and a bottom view of an embodiment of this invention. , Fig. 5 is a side view of the blade, Fig. 6 is a perspective view of the guide, Fig. 7.8 is an elevation view and side view of the plate blade, and Fig. 9 is a diagram of the relationship between the guide and the plate blade. FIG. 10 is a perspective view showing the relationship between the tip of the guide material and the cutting edge; FIG. 11 is an explanatory diagram of the cutting situation of the collecting groove;
FIG. 2 is an enlarged explanatory view of the cross section taken along the line xx in FIG. 11. 10...Main body, //...Reciprocating vibration rod, /Y... Vibration device, /3... Guide material, /... Plate blade. Figure 1872

Claims (2)

[Claims] (1) A guide material that fits the sap collection groove with a V-shaped cross section that has already been made around the outer circumference of the tree trunk, and a plate blade that is bent into a V shape that fits the collection groove and has a cutting edge in the direction of travel along the groove. Then, fix the guide material and fit it into the collection groove.
A main body with a nondle to be moved along the seashore, a reciprocating vibrating rod supported movably in the υ-axis direction by the main body, and having an attachment part for the plate blade at its tip and its vibration device, The sap collecting groove making device is characterized in that the bark cutting part maintains a step for cutting between it and the guide material, and the rising part along the woody part is arranged so as to vibrate back and forth without having a step for cutting. (2) a guide material that is compatible with the sap collection groove with a V-shaped cross section that has already been made around the outer circumference of the tree; a plate blade that is bent into a V shape that fits the collection groove and has a cutting edge in the direction of travel along the groove; Fix the guide material and fit it into the collection groove.
A main body with a handle to be moved along the sea; a reciprocating vibrating rod supported movably in the axial direction by the main body and having the plate blade attachment part at the tip thereof, and an excitation device for the reciprocating vibrating rod; A pair of driven wheels are arranged and supported in the hollow part with a space between them in the rod shaft direction, and the vibration excitation device is inserted between the pair of driven cars, and includes an eccentric cam and its drive mechanism that are supported in the main body side. , a sap collecting groove creating device characterized by being a motor.