JPH049121Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to an apparatus for manufacturing composite flooring materials, which collects narrow pieces of wood and assembles them into a plate shape such as a floorboard material using a string-like connecting material. It is something.

[Conventional technology]

As an apparatus for assembling small pieces of wood into a plate shape, there is an apparatus related to Japanese Patent Application No. 38-35466 entitled "Automatic Manufacturing Method for Wooden Parquets" filed by the present applicant. This application targets small narrow pieces of wood.
A method in which two thin grooves are cut on the upper surface, the small pieces are gathered together in a "slatted" shape, and a wire material such as wire is inserted into the narrow grooves while the pieces are transferred while being kept in close contact with each other. It is. The assembled small piece group is formed into a single plate shape by the wire rod that is press-fitted into the narrow groove and tightened.

In addition, the applicant has attempted to give the laminated board some flexibility in order to make it easier to attach the board to the mortar base, for example, by laminating wood strips with small gaps between them. About the flooring material made in 1986
-099000 (Refer to Utility Model Publication No. 62-7542) "Composite flooring"
An application was filed for utility model registration.

On the other hand, the technology that gathers pieces of wood with gaps,
An example is Japanese Patent Application Laid-open No. 52-64408 entitled ``Method of side-splitting veneer veneer''.

This technology is a conventional veneer of a predetermined size, in which narrow-width veneer veneers are assembled one after another in a direction perpendicular to the fibers, and multiple strings or tapes are bonded to the upper surface of the veneers, which are closely aligned. However, it was developed to prevent the problem of the small width veneer expanding in the direction perpendicular to the fibers due to absorbing moisture during the gluing process when stacked on plywood, causing the edges to overlap each other. be.

Therefore, narrow width veneers are intentionally gathered together with a predetermined interval, but the aim is for the veneers to be assembled in close contact with each other in the end.

[Problem that the invention attempts to solve]

To explain in detail the technical content of JP-A No. 52-64408, there is a conveyance mechanism that sequentially transports narrow veneer veneers in a direction orthogonal to the fibers, and a mechanism that is made to a predetermined thickness (the gap between the veneers). A plurality of spacers move back and forth in the veneer transport direction as a set, and are configured to be able to move up and down with respect to the veneer transport surface, and a pasting device that affixes the tape to the surface of the plurality of narrow veneers. It is what it is.

This device transports the first veneer, then stops once the edge of the veneer reaches a predetermined position, and the spacer waiting above descends to the rear edge of the veneer, and then the next veneer is transferred. When the veneer is transported and catches up with the trailing edge of the stopped preceding veneer via the spacer, both the front and rear veneers are conveyed together with the spacer sandwiched between them, and the pasting device Tape is successively applied to the outside surface of the board.

In addition, the spacer runs side by side with the front and rear veneers for a while, then reaches a predetermined position and rises to separate from both veneers, and then retreats in the opposite direction to the veneer transport direction, moving above the original waiting point. Immediately after the rear edge of the veneer has passed, the conveyance of the veneer is stopped, and the spacer is again lowered to the edge to wait for the next veneer to arrive.

Thereafter, similar operations are repeated to endlessly join narrow veneers at predetermined intervals.

The drawback of this device is that the veneers are transported intermittently, resulting in inefficiency. In addition, these devices require the operation of complex parts in conjunction with the veneer conveyance, resulting in an extremely complex mechanism.In particular, the veneer spacing is maintained and the veneer is aligned linearly in the fiber direction. The operating mechanism of a set of multiple spacers is difficult to understand.

The present invention provides an apparatus that has an extremely simple configuration and that assembles narrow pieces of wood into floorboards or the like while continuously conveying the pieces while leaving gaps between them.

[Means for solving problems]

The present invention consists of a conveyance mechanism that continuously conveys thin pieces of wood with two thin grooves cut in the upper surface in advance in a direction perpendicular to the length, and which will be described later while being conveyed. The guide member is provided with an embedding mechanism for inserting and embedding an endless connecting member such as a wire into a narrow groove in a thin piece of wood near the bent portion of the guide member.

In addition, the guide member that serves as the pivot of the present invention is installed linearly with a slight gap in both the height direction and length direction (direction orthogonal to the conveyance direction) relative to the piece of wood to be transported. It is. Generally, a pair of a lower guide member that is relatively wide and has a flat surface that contacts the bottom surface of the piece of wood and an upper guide member that regulates the height and length direction are used.

Further, the above-mentioned guide member is characterized in that it is provided with a bent portion that is inclined downward at a slight angle or curved slightly downward with a small curvature, for example, approximately near the midpoint in the longitudinal direction. .

[Effect]

In the device of the present invention, the wood strips placed one by one on the inlet table are generally transported by a conveying mechanism consisting of a fluid cylinder and a pusher 1 fixed to the tip of the cylinder piston rod. ,
Wood strips are successively fed in the width direction between the guide members arranged above and below.

That is, up to the bending portion of the guide member, the plurality of wood strips are held in close contact with each other in the width direction and are transported and advanced approximately horizontally.

The tips of the wood strips that are subsequently conveyed and reach the bending section are forced to change direction slightly downwards by the folding section, and as a result, they become rigid and cannot be plastically deformed. When viewed from the side, the edges of the two wood pieces whose tips are butted together form a V-shaped opening.

On the other hand, a flexible endless connecting material that does not expand or contract is guided toward the vicinity of the V-shaped opening position of the piece of wood, and is pulled out along the outer circumference of the insertion roller of the embedding mechanism, for example, to form a thin piece of wood. As a result of being fitted into the groove, the gaps between the pieces are maintained and the assembly is completed even when the pieces move to a flat sloped surface.

〔Example〕

FIG. 1 is a side view of an embodiment of the present invention, FIG. 2 is a front view, and FIG. 3 is a plan view. In the figure, reference numeral 10 denotes a conveyance mechanism, which is not shown, and includes a fluid cylinder such as oil or air pressure, and a flat pusher 11 that is held horizontally by being locked to the tip of the piston rod of the cylinder.
It is made up of.

The tip of the flat pusher (vertical surface) has a tip surface that is slightly narrower than the height x length (the length direction is the board width direction of the laminated composite flooring material) of the wood strip P, By cylinder stroke in the direction of arrow D,
The wooden piece is transported in the direction of arrow A while sliding on the upper surface of a lower guide member 20a, which will be described later.

Note that the transport mechanism 10 is replaced with a fluid cylinder.
A cam or a link mechanism may be used, and the plurality of pieces of wood are circularly driven in the directions of arrows A and B while being in pressure contact with the back surfaces of the pieces. Some devices employ a chain with an attachment. In this case, a wide groove corresponding to the width of the chain is cut in lower guide members 20a and 20b, which will be described later, while upper guides 30a and 30b press a piece of wood against the chain from above using a spring or the like. A configuration is required.

Reference numerals 20a and 20b are lower guide members, which normally have a smooth upper surface that is wider than the wood strip to be transported, as shown in FIG. 20b is arranged downward with a slight inclination angle. Regarding the degree of inclination, when the height x width x length dimensions of the wood strip were 8 x 25 x 130 (mm), an inclination of around 12° was optimal.

In addition, a bending section C is formed by the end of the first half of the lower guide member and the vicinity of the course change point at the beginning of the second half, and for the fixedly installed guide member 20a,
The guide member 20 in the rear half installed at the required inclination angle
Either install b fixedly, or as shown in Figure 1,
An adjustment mechanism is provided so that the inclination angle of the rear half can be variably set as appropriate.

Reference numeral 23 is a fulcrum shaft bracket that pivots the left and right ends of the starting end of the lower guide member 20b in the rear half, and is placed stationary on the machine frame or the like. 25 is a bending adjustment mechanism, in the case shown, the top of the turnbuckle erected on the floor,
It is locked to the left and right ends of the back surface of the lower guide member 20b. Therefore, as the turnbuckle expands and contracts in the direction of arrow G, the lower guide member 20b swings in the direction of arrow H using the bracket 23 as a fulcrum, and the degree of inclination of the bent portion C is controlled.

Reference numeral 30a denotes an upper guide member of the first half, which controls the left and right ends and the vertical direction of the assembled wood pieces in order to prevent them from jumping up or meandering and to transport them in a straight line. As shown in the figure, the piece has an L-shaped cross section, and is disposed near the left and right ends of the lower guide member 20a with a slight angle in the height and length directions of the piece.

Further, the end portion thereof is arranged to be aligned with the end portion of the lower guide member 20a, and the height direction regulating portion of the wood strip is provided with a notch 50c approximately the width dimension of the piece P to be transferred. ing. This is because when the piece of material passes through the bent portion C, it is necessary for the piece of material to be lifted diagonally upward, and this space is secured.

The upper guide member 30b in the latter half also has an L-shaped cross section, and is provided at the left and right ends of the lower guide member 20b in accordance with the entire length thereof. In a complementary manner, the starting end of the upper guide member 30b in the rear half is extended at an inclined angle so as to cover the notch only in the height-direction regulating region of the wood strip.

In addition, without extending the notch in the upper guide member and the height restriction part corresponding to the notch, both are installed with their end and start ends aligned with the lower guide member, and the area near the bending part is The upper guide member can be constructed by increasing the gap in the height direction with respect to the thin piece of wood to ensure a space for the piece of wood to bounce up as it passes through that part, or by replacing the upper guide member near the bent part with a relatively short member. There is also a method that divides it into two parts and interposes a spring or the like so that it can be raised and lowered in the vertical direction.

In order to cope with the size change of the assembled wood strips, the upper guide member can be configured to be adjustable in the width direction and height direction of the wood strips by using push-pull bolts, etc., as appropriate, to further improve work efficiency. .

In addition, the bent portion C of the guide member can be configured using only an inclined surface where straight lines intersect as shown in Fig. 1, or the transition portion from the horizontal surface of the first half of the guide member to the rear half of the inclined surface can be formed with a small curvature. There is also an example of a curved surface.

40 is an endless connecting material with as little expansion and contraction as possible.
Metal wire, hard vinyl wire, etc. are used, and the wire is unwound from the winding ball by an appropriate means, guided through a freely rotating guide roller to the embedding mechanism described later, and inserted into a narrow groove in the wood strip and buried. It will be done. In the illustrated embodiment, one connection material is embedded near the left and right ends of each piece of material.

50 is an embedding mechanism. As shown in Figure 2,
It is raised and lowered in the direction of arrow F using a spring from a fixed beam 53 that is installed directly above the narrow groove of the wood strip cut in advance and near the bending part C of the guide member, and is suspended horizontally on the machine frame, etc. The left and right brackets 52 are freely suspended, and the brackets are rotatably supported by the brackets, and serve as a fitting part that embeds the endless connecting material in the piece while being stretched. It is constituted by a fitting roller 51 having a narrow protruding ring formed on its outer peripheral surface.

Note that instead of the freely rotating insertion roller 51, a tongue-like member having an insertion portion with a slender tip portion corresponding to the diameter of the wire of the connecting member formed on an inclined surface is elastically suspended in the upper and lower F directions. , a fixed fitting member may be used.

To explain the embodiment of the present invention having the above configuration, first, a thin piece of wood P with a plurality of thin grooves cut in advance on its upper surface is manually inserted into the lower guide member 2.
0a, and the conveyance mechanism 10 is activated to sequentially convey the pieces in the direction of arrow A.

On the other hand, the endless connecting member 40 reaches the embedding mechanism 50 via the guide roller 42, further along the fitting portion of the outer circumferential surface of the fitting roller 51, and is connected by wire or the like to the left and right upper guide members near the bent portion C. The tip of the wood is hanging down and waiting.

As shown in Fig. 1, a plurality of pieces of wood are transported horizontally in the direction of arrow A with their front and rear edges in close contact with each other, and by the time they reach the bending part C, the pieces of wood are hanging down. The connecting material is scooped out and the connecting material begins to be tightly fitted diagonally into the tip of the piece by the pressurizing action of the embedding mechanism 50, and at a similar timing, the upper guide member 30 arranged at an angle
The top corner of the leading edge of the wood strip touches b, and the wood strip 1
Only books can change their course downwards.

In other words, since one of the tips is bent diagonally downward from a state in which multiple pieces are closely held in a horizontal plane, the edge between the leading piece and the next piece looks different when viewed from the side. As a result, a V-shaped opening is formed as shown in FIG. 1, and a non-expandable connecting material is endlessly and tightly driven between the open pieces of material to form a sewn state.

Therefore, after that, the flat second half guide member 20 passes through the bent portion C that created the open state.
When reaching points b and 30b, a predetermined gap is provided between the wood strips, and the wood strips take on the shape of an endless array of plates. Thereafter, under the same action, the pieces of wood are continuously carried out in the direction of arrow B, and are eventually finished into flooring materials of a predetermined size.

Although this device has been explained on the premise that thin grooves are processed in advance on small pieces of wood, it is also possible to use thin, tough endless connecting materials for soft wood, etc., and to replace the spring of the embedding mechanism with a fluid cylinder, etc. Therefore, when the insertion pressure is increased and used, there are cases where it is not necessary to pre-process the narrow grooves in the wood strips.

In addition, the endless connecting material can be attached to the upper surface of a piece of material without being buried in the piece, or by attaching the endless connecting material to the upper surface of multiple pieces one after another and partially attaching the connecting material to each piece of material. There are connection methods such as a method of wedge-bonding the top surface.

Furthermore, this device can be easily equipped with a device that simultaneously creates narrow grooves on both the left and right sides of the piece by placing groove cutting cutters on the left and right ends in front of the bending part C. At the ends of the guide members, it is also possible to arrange cutters for performing joint processing such as eye-marking or zapping on the side end surfaces of the assembled plate materials, and in this case, the product can be produced in one process.

As described above, the device of the present invention can efficiently produce composite flooring materials and the like by providing the necessary gaps between the wood strips using an extremely simple mechanism.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, with FIG. 1 being a side view, FIG. 2 being a front view, and FIG. 3 being a plan view. 10...Transportation mechanism, 20a, 20b...Lower guide member, 25...Bending adjustment mechanism, 30a,
30b...Upper guide member, 40...Endless connecting member, 50...Embedding mechanism, C...Bending portion, P...
...wood strips.

Claims (1)

[Claims for Utility Model Registration] 1. A manufacturing device for composite flooring, which comprises each of the following configurations A to D, and is characterized by assembling wood strips with gaps between them. A: A lower guide member consisting of a first half with a flat horizontal surface and a second half with a downwardly inclined surface, and a bent portion is formed by the end of the first half and the beginning of the second half. B: An upper guide member having an L-shaped cross section and disposed at the left and right ends along with the lower guide member. C. A conveyance mechanism that conveys the wood strips along the guide members A and B. D. An embedding mechanism that is equipped with a fitting part for burying the endless connecting material in the transported wood strip and is suspended above the bent part so as to be able to move up and down. 2. The apparatus for manufacturing composite flooring material according to claim 1, wherein the slope of the rear half of the guide member is configured such that the degree of slope can be freely adjusted. 3. The composite flooring manufacturing apparatus according to claim 1 or 2, wherein the conveying mechanism is constituted by a fluid cylinder and a pusher that is engaged with the fluid cylinder. 4. Any one of claims 1 to 3 of the utility model registration claim, characterized in that the insertion part of the embedding mechanism is constituted by a rotatable insertion roller.
A manufacturing device for the composite flooring material described in 2.