JPS629042Y2 - - Google Patents

Description

[Detailed explanation of the invention] A. Purpose of the invention (industrial application field) The invention is designed to change the pressing force on the material in the wood cutting device to be strong or weak depending on the material, so that an appropriate material feeding force can always be obtained. This invention relates to a device that can accurately perform operations such as one-touch operation.

(Prior art) Conventionally, a table to which a plane blade is attached and a material feeding member such as a belt are placed opposite each other so that one of them can be raised and lowered, and the upper member is raised and lowered using an adjustment screw to adjust the distance between the table and the other member. A wood cutting device in which the adjustment screw is equipped with a cushion mechanism and the cushion is actuated when feeding the material to obtain the pressure necessary for feeding the material is known from Japanese Utility Model Publication No. 1980/1980. .

(Problems to be solved by the invention) The cushion mechanism in the conventional device described above houses one spring in a spring case, screws a pressure regulating nut onto this spring, and tightens the nut. The elasticity of the spring is increased and the elasticity is reduced by loosening the spring to compensate for excess or deficiency in the weight of the lifting side member which is the main source of material pressing force. Therefore, with the spring pressure type, if the workpiece is a soft material or a narrow material and a weak pressure is sufficient, turn the pressure adjustment nut described above many times to reduce the amount of compression of the spring and increase the elasticity. If you need to weaken the pressure and increase the pressure with hardwood or wide objects, you must turn the pressure adjustment nut in the opposite direction many times to increase the amount of compression of the spring and strengthen its elasticity. For this reason, the operation of changing the pressure applied to the material is extremely troublesome and time-consuming, and
Since the elasticity of the spring is adjusted by feeling, the cushion pressure changes each time it is adjusted, resulting in problems such as insufficient material feeding resulting in poor material feeding, and excessive material resulting in crushed material and loss of power. .

The present invention was made to solve the above-mentioned conventional problems, and the spring of the cushion mechanism has a dual structure of an inner spring that is constantly activated and an outer spring that is selectively activated, and the inner spring is used only for single use. To provide a pressurizing force switching device for a material in a wood cutting device, which can instantly apply an optimum pressurizing force to a material by switching between using an inner spring and an outer spring in combination. The purpose is to

B. Structure of the invention (means for solving the problem) The table 5 with the hook blade 2 attached and the material feeding member 6 such as a belt are placed opposite each other so that one of them can move up and down, and the upper member is adjusted. In a wood cutting device, the adjustment screw 9 is raised and lowered by a screw 9 to adjust the distance from the other, and the adjustment screw 9 is equipped with a cushion mechanism A to operate the cushion when feeding the material, and the adjustment screw 9 is screwed together. A spring receiver 12 attached to the frame 8 of the elevation side member and having the adjustment screw 9 inserted therethrough is made to correspond to the elevation nut 13, and between the spring receiver 12 and the elevation nut 13, an inner spring 15 and an outer spring are attached. 16 concentrically, one end of the outer spring 16 is brought into contact with the ring 18 which is connected and separated by inserting and removing the connecting pin 19 into and from the elevating nut 13 or its extension 14. 19 has a structure in which a member 21 for removing and inserting the same is linked.

(Function) The device of the present invention is of the spring-load type shown in Figures 1 and 2 of the drawings, that is, the spring elasticity works to reduce the weight of the lifting side member, and the device is made of hard wood or has a wide width. When you want to increase the pressing force on the material, turn the handle 23 toward the size indicated on the display plate 26, and the coupling pin 19 insertion/extraction member 21 inserts the coupling pin 19 into the bottle hole 20 of the ring 18. Since the ring 18 is connected to the extension tube 14 of the lifting nut 13, the elasticity of the outer spring 16 is no longer transmitted to the spring receiver 12, and only the elasticity of the inner spring 15 is transmitted to the spring receiver 12.
2 to the frame 8 and reduce the weight of the lifting side member by this elasticity, the pressing force applied to the material by the lifting side member is strong enough to be suitable for hardwood and wide materials. Become.

However, if the material is soft or narrow and you want to reduce the pressing force on the material, move the handle 23 to the display plate 2.
When the ring 18 is turned toward the small display of 6, the extraction/insertion member 21 of the coupling bottle 19 pulls out the coupling bottle 19 from the pin hole 20, so that the ring 18 is inserted into the extension tube 1 of the lifting nut 13.
4 and comes into contact with the spring receiver 12. Therefore, in this case, not only the elasticity of the inner spring 15 described above but also the elasticity of the outer spring 16 is transmitted from the spring receiver 13 to the frame 8, and the weight of the elevating side member is reduced by the amount of both elasticities. The pressing force applied to the material due to the weight of the lifting side member is weak and suitable for feeding soft materials and narrow materials.

Next, in the spring lower pressure type shown in Figure 4, that is, the spring elasticity works to increase the weight of the lifting side member, if you want to increase the pressing force because it is made of hard wood or a wide material. As shown in FIG. 4, when the coupling pin 19 that connects the ring 18 and the lifting nut 13 is pulled out using the insertion member 21, the ring 18 is separated from the lifting nut 13 and the spring receiver 12 is removed.
The elasticity of the outer spring 16 is transmitted to the spring receiver 12, and together with the inner spring 15, the elasticity is transmitted from the spring receiver 12 to the frame 8. The pressing force is strong and suitable for hardwood and wide materials.

However, if you want to reduce the pressing force for soft wood or narrow material, use the binding bin 1 as shown in Figure 4.
When the ring 18 and the lifting nut 13 are connected by the ring 9, the lifting nut 13 receives the elasticity of the outer spring 16 and does not transmit it to the spring receiver 12, so the inner spring 15
Since only the elasticity is transmitted from the spring receiver 12 to the frame 8, the pressing force on the material due to the sum of this elasticity and the weight of the lifting side member is weak and suitable for soft materials and narrow materials. .

(Example) Next, an example of the implementation of the material pressurizing force switching device in the wood cutting device according to the present invention will be explained based on the drawings.

In Figure 1 of the drawings, reference numeral 1 denotes the body of a wood cutting device, which includes a table 5 for attaching a planer blade 2 to a knife stock 3 and inserting and removing it into a groove 4 in the center, and a material feeding member 6 such as a roller or a belt. The upper and lower sides are supported correspondingly, and on the other hand, in the drawing, the material feeding member 6 side is supported by a frame 8 that engages vertical guides 7, 7 provided on the machine body 1 so as to be able to move up and down. The distance between the material feeding member 6 and the table 5 can be freely adjusted by raising and lowering it using an adjusting screw.

Reference numeral 9 denotes an adjustment screw for raising and lowering the frame 8 described above, and the upper support portion 9' is connected to the vertical guides 7, 7 described above.
The screw 9 is inserted into the joint 10 of the screw 9 and supported so that it can freely rotate but not move in the axial direction, so that the rotation of the reducer motor 11 is transmitted to its tip. As shown, a spring receiver 12 attached to the frame 8 is passed through and screwed into a lifting nut 13 provided below, and an extension tube 14 is connected above the lifting nut 13.

A indicates the lifting nut 13 screwed onto the adjusting screw 9, and the spring receiver 1 attached to the frame 8.
This is a cushion mechanism disposed between the frame 8 and the lifting nut 13 to operate the cushion, and as shown in FIG.
The lower end of the inner spring 15 is brought into contact with the lifting nut 13, the upper end is brought into contact with the pressure adjusting nut 17 screwed onto the spring receiver 12, and the lower end of the outer spring 16 is brought into contact with the lifting nut 13. , the upper end is brought into contact with the ring 18 fitted in the extension cylinder 14 of the lifting nut 13,
The ring 18 is provided with a pin hole 20 that matches the coupling pin 19 fitted into the extension tube 14, and when the coupling pin 19 is inserted into the pin hole 20, the lifting nut 13 and the ring 18 are coupled, Outer spring 16
However, when the coupling pin 19 is removed from the pin hole 20, the lifting nut 13
and a ring 18 are separated, and the elasticity of the outer spring 16 is transmitted to the spring receiver 12 by the ring 18.

Reference numeral 21 denotes a member for inserting and removing the coupling pin 19, which supports the shaft 22 on the frame 8 and inserts the handle 23.
using a rotating plate rotated by a rotating plate, the tip of which is connected to the head 24 of the connecting pin 19 by a pin 25,
As shown in FIG. 2, a display plate 26 is attached to the lower part of the handle 23, indicating the pressure force, that is, the elasticity, as large or small. When the handle 23 is turned toward the large display, the connecting pin 19 is Pin hole 20 of ring 18
When the handle 23 is pulled out from the ring 18 and the handle 23 is turned toward the small indicator, the connecting pin 19 is inserted into the bottle hole 20 of the ring 18.

Reference numeral 27 denotes a pin that limits the movement range of the coupling pin 19, which is attached to the extension tube 14 so as to engage with the long groove 28 of the coupling pin 19, and when the coupling pin 19 comes out of the pin hole 20 and when it is inserted. When the connecting pin 19 is pressed against the end of the long groove 28, the movement of the connecting pin 19 is stopped.

FIG. 4 shows another embodiment, in which a lifting nut 13 screwed onto an adjusting screw 9 is attached to the frame 8 of the lifting side member, the adjusting screw 9 is inserted through the lifting nut 13, and a pressure regulating spring is attached to the upper part. A nut 17 is disposed in the case-shaped spring receiver 12 screwed together, and an inner spring 15 and an outer spring 1 are disposed between the elevating nut 13 and the bottom of the spring receiver 12.
6 are interposed concentrically, the upper end of the inner spring 15 is brought into contact with the elevating nut 13, the lower end is brought into contact with the bottom of the spring receiver 12, and the upper end of the outer spring 16 is fitted into the spring receiver 12. The lower end is brought into contact with the bottom of the spring receiver 12, and the elevating nut 13 is provided with a pin hole 20 that matches the connecting pin 19 fitted in the ring 18, and the connecting pin 19 is inserted into this pin hole 20. When inserted, the lifting nut 13 and ring 18 are connected,
Although the elasticity of the outer spring 16 is not transmitted to the spring receiver 12,
When the coupling pin 19 is pulled out from the pin hole 20, the lifting nut 13 and the ring 18 are separated, and the outer spring 16
The elastic force is transmitted to the spring receiver 12 by the ring 18.

Incidentally, also in this embodiment, the coupling pin 19
Since this member 21 is the same as that of the embodiment shown in FIGS. 2 and 3, its drawing and explanation will be omitted, and the movement of the coupling pin 19 will be explained. Only the drawings show the pin 27 that limits the range and the long groove 28 that engages it.

C. Effects of the invention In the device of the invention, the spring of the cushion mechanism has a double structure of an inner spring and an outer spring, and the ring that abuts one end of the outer spring is connected to and separated from the lifting nut by inserting and removing the connecting pin. Therefore, when the ring and the spring holder are connected, only the elasticity of the inner spring acts from the spring holder to the frame of the elevating side member, but when the ring and the elevating nut are separated, both the outer spring and the inner spring act on the frame. Since the elasticity of the cushion mechanism acts from the spring receiver to the frame of the lifting side member, the elasticity of the cushion mechanism can be changed with a single touch, which is extremely convenient for operation and greatly improves work efficiency. When using a certain inner spring and an outer spring in combination, and choosing to use them alone or in combination, the weak pressure and strong pressure are always constant at the appropriate value and fluctuate, unlike the conventional method in which the elasticity of one spring is adjusted. Because there is no problem, you can use any material without causing any damage.
This has the unique effect of reliably feeding the material with a minimum amount of power.

[Brief explanation of the drawing]

FIG. 1 is a front view of a wood cutting device that employs the device related to the present invention. FIG. 2 is an enlarged longitudinal sectional front view of one embodiment of the device related to the present invention. FIG. 3 is a partially cutaway plan view of the same as above. FIG. 4 is an enlarged longitudinal sectional front view of another embodiment. In the figure, 2 is a plane blade, 5 is a table, 6 is a material feeding member, 8 is a frame, 9 is an adjustment screw, A is a cushion mechanism, 12 is a spring receiver, 13 is a lifting nut, 1
5 is an inner spring, 16 is an outer spring, 18 is a ring, 19
21 is a connecting pin, and 21 is an insertion/extraction member.

Claims (1)

[Scope of utility model registration request] A table with a planer blade attached thereto and a material feeding member such as a belt are placed opposite each other so that one of them can be raised and lowered, and the upper member is raised and lowered using an adjustment screw to adjust the distance between the table and the other member. In a wood cutting device which is equipped with a cushion mechanism and which operates the cushion when feeding material, a spring is attached to the frame of the lifting side member and inserted through the lifting nut into which the adjusting screw is screwed. The inner spring and the outer spring are interposed concentrically between the spring receiver and the elevating nut, and one end of the outer spring is inserted into and removed from the elevating nut or its extension. 1. A pressurizing force switching device for a material in a wood cutting machine, characterized in that the coupling pin is brought into contact with a ring that is coupled and separated by a ring, and a coupling pin is connected to an insertion/extraction member thereof.