JPS604723Y2 - timber gripping device - Google Patents

Description

[Detailed description of the invention] This invention relates to a lumber gripping device, and more specifically, when gripping lumber on a lumber transport car in a sawmill, it may cause scratches when gripping the sawn surface after it has been sawn. This invention relates to a lumber gripping device in which a special lumber clamp attachment that can be gripped without attaching a lumber is attached to an upper dog.

As shown in FIGS. 1 and 2, the lumber gripping device of the lumber transport car in a sawmill generally includes guide grooves of a head block 1 attached at multiple locations on the lumber transport car (not shown). A column 3 is vertically attached to the head stock 2 which is slidably engaged along the column, brackets 4a and 4b which are moved up and down by fluid cylinders are attached to this column, and can be moved left and right by fluid cylinders 5a and 5b. The upper dock 6as and the lower dog 6b are slidably attached as shown in FIG. It has become.

However, with a gripping device having such a configuration, in the case of cutting prismatic wood, the sawn surface must be grasped with a dock after it has been sawn, causing scratches on the sawn surface and further damage. Not only does it require sawing to remove the material, but it also results in wasted material.
It is time-consuming and troublesome to saw the wood, and the grain of the wood (
It was not possible to correct the warping and bending caused by wood grain (wood grain), etc., and when gripping the headstock, one end was held a little farther away from the abutting surface of the headstock based on the intuition of experienced people.

The purpose of this invention is to eliminate the above-mentioned drawbacks of the conventional method. Twin docks are attached to the upper and lower parts of a column installed upright in the head block of a material transport vehicle, with the toes of these twin docks facing each other. A lumber gripping device characterized in that one corner of an attachment is pivotally supported on each of these twin docks, and a lumber holding material is fixed to the attachment at approximately the same position or overhanging in the direction opposite to each of the toes. This is what we provide.

An embodiment of this invention shown in the drawings will be described in detail below.

Fig. 3 is a perspective view of the wood presser attachment, which is a feature of this invention, and this wood presser attachment 7 is shown in Figs.
As shown in the figure, there are mounting holes for the twin docks, which will be described later, in one corner of the two rectangular side plates 71a and 71a. 2 a, 72
A is provided at each corner, and at the other corner opposite to one corner of the both sides plates, as shown in FIG. 7
1a.

The roller 7 for releasing the attachment that also serves as a wood presser 71a is arranged so that the outer periphery of the wood presser material 74 is located above the grafted surface of the wood presser 74 on the upper dock and below the lower dock on the lower dock.
5 is pivotally supported by a shaft 76.

As shown in FIGS. 5 to 9, both the upper dock 8a and the lower dock 8b are provided with spacing pieces ( (not shown), and their toes 89 are placed above the grafting surface of the wooden retainer 74 of the attachment in the upper dock, and below it in the lower dock.

Further, the upper and lower twin docks 8a and 8b each have a spring 8 wound around a support shaft 85 for attaching the attachment.
A connecting support rod 86 that elastically supports both ends of the rod 8 and an adjustment member 87 that adjusts the position thereof are attached.

The lumber gripping device of this invention is constructed as described above, and the case where this lumber gripping device is used to grip and hold lumber will be explained below.

Fig. 5 shows the structure of the lumber gripping device of a lumber transport car equipped with the gripping device of this invention, and the structure of the parts with the same reference numerals as in Figs. be.

In each of the above figures, 7, 7 is a wood press attachment, 8a is an upper twin dock, and 8b is a lower twin dock.

Figure 6 shows the wooden presser attachment 7 on the upper twin dock 8a.
The support shaft 85 is inserted through the mounting hole 72at 72a and pivoted between the dock claws 81a, 81a, and a spring 88 attached to the support shaft 85 biases the wood presser attachment 7 with rotational force in the wood press direction.

In the case of raw material wood, it is gripped between the upper and lower twin docks 8a and 8b, but in this case, the Suigami attachment 7 passes the support shaft 85 through the mounting hole 72a, the gripping point of the raw material wood a has an arc shape, and the attachment 7 Through the roller 75, the spring 88 resists the elasticity of the spring 88 and rotates in the opposite direction, and the toe 89 and the holding roller 75 of the attachment 7 and the toe of the lower dock 8b and the roller (not shown) of the lower attachment collide. It is held between the surface 2a and the surface 2a.

As shown in FIG. 4, the two-pronged helical spring 88 has its center folding point locked onto the support rod 86, and its center hooked onto the dock claw 81.
a, 81a as shown in FIG. 6, the side plate 71a of the attachment 7
, 71a are configured to apply a rotational force in the direction of the wood presser.

In addition, as shown in FIG. 7, the wood presser attachment 7 is
When the spindle 85 is passed through the mounting hole 82a and attached to the upper twin dock 8a, and the sawn surface is held between the headstock 2 and the wood presser attachment 7, there is a gap between the sawn surface and the abutment surface 2a. If you hold it with a slight gap equal to the amount of warpage,
Since the wood presser attachment 7 hits the sawn surface of the lumber a with the wood presser material 74 located slightly to the right from directly below the support shaft 85, the wood presser attachment 7 resists the elastic force of the spring 88 and presses against the water. As a result, as shown in Fig. 8, a horizontal force is generated that presses the sawn surface of the lumber a against the abutting surface 2a, correcting the warp on the end sawing side.
Since it can be sawn and split, it is possible to make a square pillar with the same cross-sectional area in each part, that is, it can be cut in a curved manner.

In this case, the toe 89 of the upper and lower twin docks 8a, 8b does not hit the grinding surface due to the above-described configuration, so no scratches are caused.

As mentioned above, this invention has twin docks 8a, 8
b is attached with the toes 89 of these twin docks 8a and 8b facing each other, one corner of the attachment 7 is pivotally supported on each of these twin docks, and a wooden retainer 74 is attached to this attachment 7 with the toes 89 facing each other. Since it is fixed at approximately the same position or overhanging in the direction, the material wood and sawn wood can be held together with the same dock, and it can also be held without damaging the sawn surface. Moreover, depending on the mounting position of the wood holding attachments on the twin docks, the material wood can be gripped between each attachment and pressed strongly against the mating surface, so that even if there is a warp, a square column with the same cross section will be formed across each part. It has the effect of being able to be ground.

[Brief explanation of the drawing]

Fig. 1 and Fig. 2 are both side views showing the state of the conventional wood material gripping device, and Figs. 3 to 9 each show an embodiment of this invention. Figure 3 is a perspective view of the presser attachment, Figure 4 is a plan view of the attachment attached to the upper twin dock, and Figure 5 is a view of the twin dock with the presser attachment attached and other parts of the material truck. Figure 6 is a side view showing the relationship between the wood presser attachment and the material. Diagram explaining the relationship with trees, No. 8
The figure is a perspective view showing the relationship between the wood presser attachment and the wood material after the final sawing is done in the gripping state, and Figure 9 shows the wood presser attachment when sawing the wood material without warping. FIG. 3 is a diagram illustrating the relationship between material wood and the like. 1...Head block, 2...Head stock, 3...Column, 4a, 4b...
... Bracket, 5a, 5b ... Fluid cylinder, 7 ... Wood clamp attachment, 71a, 71
b...Side plate, 72a...Mounting hole, 86
......Connection support rod, 74...Wood retaining material,
75... Presser roller, 8a18b...
Twin dock.

Claims (1)

[Scope of utility model registration request] Twin dogs 8a, 8b are installed at the upper and lower parts of the column 3 set up on the head block 1 of the material transport vehicle.
The toes 89 of b are attached facing each other, one corner of the attachment 7 is pivoted to each of these twin dogs, and the wooden retainer 74 is attached to this attachment 7 at approximately the same position with respect to the direction in which the toes 89 are opposed to each other. Alternatively, a lumber gripping device characterized by being fixed in an overhanging manner.