JPH0321924Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention is designed to raise and lower an elevating section at will according to the thickness of the workpiece placed on a surface plate using an elevating and lowering feeding means. The present invention relates to an auxiliary roller fixing device for a portable automatic planing machine, in which a cutting member is conveyed in one direction by a feed roller of an ascending/descending section and cut by a plane barrel of an ascending/descending section.

[Conventional technology]

The automatic plane machine mentioned above may cut long objects that are considerably longer than the surface plate, but in such cases,
In order to convey and cut a long workpiece in a stable state, auxiliary rollers are provided on the front and rear of the surface plate, which are protruded from each other and can be rotated and folded upward via a roller link, and the height can be adjusted. This was proposed by the applicant and is published as Utility Model Application No. 1983-91402.

The above-mentioned auxiliary roller opens horizontally during cutting and protrudes in both the front and rear directions of the surface plate, and when not in use, can be rotated upward and folded for compact storage, making transportation and storage convenient. ,
Furthermore, although the roller link can be folded at an acute angle with respect to the surface of the surface plate, the auxiliary roller mentioned above is unstable because it does not have any means to hold it in the folded state, and therefore it is unstable during transportation. If the automatic planer is tilted or subjected to sudden shock or vibration when stored or stored, the auxiliary rollers will easily open and protrude, causing them to hit people or objects.
There were problems that hindered transportation and storage.

[Problem that the invention attempts to solve]

The present invention is an attempt to solve the above problem, and uses a roller link with an auxiliary roller pivoted at its tip, which is moved upward by a fulcrum pin through a properly formed leaf spring in a groove provided in a surface plate. By pivoting and collapsing the auxiliary roller, the auxiliary roller is fixed in the folded state by the spring force of the leaf spring for convenient transportation and storage, and the roller link can be rotated. The reason for this is that it can be put into the folded or used state with a single touch operation without requiring any other special operations.
That is the purpose.

[Means for Solving the Problems] That is, the present invention uses fulcrum pins that protrude from the front and rear of the surface plate in the vicinity of the base ends of the roller links, each having an auxiliary roller pivotally supported at its tip, and are pivotable and foldable upward. In the automatic planing machine, grooves are formed on both the front and rear left and right sides of the surface plate, and the upper and lower ends of the grooves are respectively curved toward the roller link to provide spring characteristics. The above problem is solved by providing a plate spring having a substantially U-shaped cross section, and engaging the curved protrusion of the plate spring with the roller link when the roller link is rotated and folded upward.

〔Example〕

Hereinafter, one embodiment of the present invention will be described in detail based on the drawings. As shown in FIGS.
Grooves 2, 2, 2, 2 are formed on both left and right sides of the front and rear end portions 1a and 1b, the front end portion 1a has a substantially U-shaped planar shape, and the rear end portion 1b has a substantially U-shaped planar shape. The grooves 2 are formed in the shape of a letter 1 and penetrate to the lower end of the surface plate 1, and a plate spring 3 is interposed inside each groove 2 along one side wall 2a.

As clearly shown in FIGS. 3 and 4, the leaf spring 3 has a recess 3a on the front surface of the central part of the band-shaped spring plate into which the roller links 4, 4 can be fitted, and the width a of the recess 3a is defined by the width a of the recess 3a. Approximately equal to or slightly wider than the width c of 4, and its depth b
When the auxiliary roller is opened almost horizontally during cutting,
The height of the auxiliary roller can be easily adjusted with an adjustment screw 8 on the upper surface 1a of the surface plate 1, and the spring pressure is released from the protrusion 3b of the plate spring to make it free by an appropriate dimension smaller than the plate thickness d. In addition, by providing the recess 3a, protrusions 3b, 3b, which protrude in the same direction and have spring properties, are provided horizontally and in parallel at the upper and lower parts of the recess 3a, respectively. Furthermore, both remaining ends of the band-shaped spring plate are bent substantially parallel to the back to provide clamping plate portions 3c, 3c, thereby making the cross section curved into a substantially U-shape.

Further, a through hole 3e for inserting a fulcrum pin, which will be described later, is provided approximately at the center of the recess 3a in the leaf spring 3, and a rising portion 3d extends from both upper and lower ends of the recess 3a to each protrusion 3b, 3b. 3d, the roller links 4, 4 smoothly move into the recess 3 as described later.
It is formed into a rounded surface or an inclined surface as shown in the figure so that it can smoothly ride on the protrusions 3b and 3b from a to 3b against the spring force.

In this way, the leaf springs 3 are inserted into the respective grooves 2 through their openings, but at this time, the clamping plates 3c are expanded against their own spring force, and one side wall 2a is opened. By engaging the upper surface and the lower surface, one side wall 2a is held between the two sides, and the roller link 4 is supported inside the groove 2 with the back surface of the recess 3a abutted against the inner surface of the side wall 2a.
The base end portion of the spring 3 is located in the groove 2, and is pivotally connected to the surface plate 1 by a fulcrum pin 5 between the other side wall 2b and the recess 3a of the leaf spring 3. Here, the fulcrum pin 5 passes through the through hole 3e of the leaf spring 3 and the roller links 4, 4, and connects to both side walls 2a, 2 of the groove 2.
b to prevent the leaf spring 3 from falling off.

Further, the groove width e of each of the grooves 2 is determined by the dimension f from the back surface of the recess 3a in the leaf spring 3 to the tips of the protrusions 3b, 3b, and the plate thickness d of the roller link 4.
The decision was made with this in mind.

Further, the roller links 4, 4 are formed into a substantially U-shape in plan, and have auxiliary rollers 6 for feeding the workpiece w to be rotatably supported at the tip portions 4a, 4a, respectively. , 4 are respectively projected inward from the lower part of the surface plate 1 by pivoting the base end portions as described above. At a position facing the upper surface of each base end portion 4b, 4b, adjusting screws 8, 8 are screwed into screw holes 7, 7 vertically penetrating the surface plate 1 through hexagonal nuts, spring washers, etc. (not shown). By screwing them together so that they can move forward and backward and prevent them from loosening, and by abutting their tips against the upper surfaces of the base end portions 4b, 4b, the roller links 4, 4 are brought into use as shown by solid lines in FIG. By holding the adjusting screws 8 forward and backward, the roller links 4, 4 are rotated counterclockwise or clockwise in FIG.
6 is adjustable with respect to the upper surface 1a of the surface plate 1 on which the cut member w is placed.

Further, the lower portions of the base end portions 4b, 4b of the roller links 4, 4 are not restrained in any way, and the roller links 4, 4 are attached to the fulcrum pins 5, 5, as shown by the two dotted lines in FIG. It can be rotated and folded upward into a substantially vertical position using the fulcrum as a fulcrum.

Further, the automatic planing machine includes the above-mentioned surface plate 1, the lifting section 9,
Left and right guide members 10, 10 and lifting/lowering feeding means 11
It is made up of.

Each roller 1 is provided in a cavity (not shown) that is open in the upper surface 1a of the surface plate 1 and is provided long in the left-right direction.
2, 12' are arranged in front and rear so that they can rotate freely, and
It is pivoted parallel to and at the same height as the upper surface 1a.

Further, the elevating section 9 has a plane barrel 15 in a horizontally long hollow section 14 penetrating approximately the center of a roller case 13 forming the main body, and feed rollers 16 and 16' in parallel in front and behind the hollow section 14, respectively. The plane barrel 15 and the feed rollers 16, 16' are rotatably supported by a motor 17 fixed to the roller case 13 via a suitable deceleration transmission mechanism.

Further, the left and right guide members 10, 10 are formed in a substantially U-shaped cross section, and are engaged with both left and right ends of the roller case 13 in the elevating section 9 so as to be able to move up and down.

Further, the elevating and lowering feeding means 11 is formed of a pair of left and right feed screw shafts 18 and one handle shaft 19, and the upper and lower ends of the feed screw shaft 18 are connected to the guide members 10, 10. It is rotatably supported on the left and right sides of the surface plate 1, while the handle shaft 19 is rotatably installed on the left and right guide members 10, 10,
The handle shaft 19 and the feed screw shafts 18, 18 are interlocked and connected by a gear transmission mechanism (not shown), and a handle 20 is fixed to one end of the handle shaft 19.

The roller case 13 is screwed onto the pair of feed screw shafts 18, 18, and the pair of feed screw shafts 18, 18 are rotated by rotating the handle shaft 19 in the forward or reverse direction using the handle 20. It rotates forward or backward by the same rotation angle in the opposite direction, thereby enabling the roller case 13, that is, the elevating section 9, to move up and down as desired depending on the thickness of the workpiece w.

Further, a compression spring 21 is interposed between the pair of feed screw shafts 18, 18, and the lifting portion 9 is urged upward in a direction opposing the weight of the lifting portion 9, thereby causing the feed screw shafts 18, 18 to move upwardly. It is designed to absorb the looseness caused by the screwing.

In addition, in Figures 1 to 3 A and B, 22 indicates rootstocks fixed to the left and right lower portions of the surface plate 1, respectively, 23 in FIG. 1 indicates a carrier band, and 24, 24 in FIG. Shows the guide.

In the above configuration, when cutting the workpiece w using this, the front and rear roller links 4, 4 are opened in a substantially horizontal state as shown by solid lines in FIG. 1, and the auxiliary rollers 6, 6 are placed on a surface plate. The front end of the workpiece w is placed on one of the rollers 12 on the surface plate 1 while being held at the same height as the upper surface 1a of the workpiece w.

Next, the elevating part 9 is lowered by the feeding means 11, and when the plane body 15 and the feed roller 16 are brought into contact with the upper surface of the workpiece w, the motor is started to move the plane body 15 and the feed rollers 16, 16. When driven and rotated, the workpiece to be cut w is transported by the feed roller 16 in one direction, from the left side to the right side in FIG. 1, and is then cut by the plane barrel 15.

When the workpiece to be cut w is conveyed, the rear end part leaves one of the feed rollers 16, but at this time, it is conveyed by the other feed roller 16'.
Completely milled from front end to rear end.

Further, the long workpiece is placed on the surface plate 1 and the front auxiliary roller 6 from the beginning of cutting to the middle of cutting, and on the surface plate 1 from the middle of cutting until the end of cutting.
Since it is placed on the rear auxiliary roller 6, the cut member w is transported in a horizontal state without being tilted in the vertical direction during the cutting process.

When not in use, the roller links 4, 4 can be folded upward into a substantially vertical state as shown by the two-dot broken line in Fig. Although the roller links 4, 4 can be stored compactly, the leaf springs 3 are installed in the grooves 2, 2... of the surface plate 1 to which they are pivotally mounted.
In use, the roller links 4, 4 are held approximately horizontally along the recess 3a of the leaf spring 3, as shown in FIG. 3A, and receive the spring force of the leaf spring 3. However, when the direction of the roller links 4, 4 changes by rotating upward as described above,
The links 4, 4 are connected to the upper and lower protrusions 3 from the recess 3a.
b, 3b against the spring force, and as shown in FIG. As a result, the roller links 4, 4 are fixed in an upwardly folded state, and can be easily opened to the use state when the automatic planer is tilted during transportation or storage, or when a sudden shock or vibration is applied to it. There is no such thing.

Also, from the folded state, the roller links 4, 4
When rotated downward against the spring force, the protrusion 3
It can be easily put into use by sliding into the recess 3a from b, 3b, and becomes free by releasing the spring pressure, and by arbitrarily adjusting the adjustment screws 8, 8, each proximal end 4b of the roller link can be adjusted. ，
4b, the height of the auxiliary roller can be easily adjusted.

[Effect of idea]

As explained above, since the auxiliary roller fixing device for an automatic planer according to the present invention is configured,
Auxiliary rollers 6 protruding from the front and rear of the surface plate 1,
6 is rotated upward and folded, the roller links 4, 4 are fixed in the folded state by receiving the spring force of the plate springs 3, 3 and hitting the groove side wall of the surface plate 1. This prevents the auxiliary roller from opening (rotating) naturally to the operating state due to vibrations and tilting during transport or storage, increasing the safety of the transport action for this type of plane machine, which is often used for transport work. In addition, when the auxiliary rollers 6, 6 are in use, the roller links 4, 4 are located in the recesses 3a of the leaf springs 3, 3, and are free without being subjected to spring force. Moreover, since the structure is extremely simple by simply interposing the plate spring 3 having a substantially U-shaped cross section between the pivot parts of the roller links 4, 4, it can be manufactured at low cost.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway side view of an embodiment of an auxiliary roller fixing device for an automatic planing machine according to the present invention, and Fig. 2 shows a surface plate, an auxiliary roller, and a roller link in the same embodiment. A plan view showing the installation positional relationship, FIG. 3A is a cross-sectional view taken along the - line in FIG. 2, and FIG. FIG. 4 is a perspective view of the leaf spring in the same embodiment. 1... Surface plate, 2, 2, 2, 2... Groove, 3... Leaf spring, 3a... Recess, 3b, 3b... Protrusion, 4,
4... Roller link, 5... Fulcrum pin, 6...
Auxiliary roller.

Claims (1)

[Scope of utility model registration request] A fulcrum pin 5 protrudes from the front and back of the surface plate 1 near the base ends of the roller links 4, 4, each having an auxiliary roller 6 pivotally supported at its tip, and is rotatably foldable upward.
In an automatic planing machine which is pivotally mounted at
, and plate springs 3, 3 having a substantially U-shaped cross section with spring properties by bending the upper and lower ends toward the roller links 4, 4, respectively, are provided in each groove, and the roller links are moved upward. An auxiliary roller fixing device for an automatic planing machine, characterized in that the curved protrusions 3b, 3b of the leaf spring are engaged with the roller link during rotation and folding.