JPS5845004A - Tenon working machine for board material - 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 The present invention relates to a tenon processing machine (also referred to as a double-end chiner) for processing the end of a board, and particularly improves the exchange performance of the processing tool.

Wooden products such as various types of furniture, which are constructed by combining a large number of unit boards with different sizes and shapes, are required to have different end structures for each unit board because the combination structure is complicated.

In the manufacturing process, a cutter or other processing tool attached to the processing head of a tenon processing machine performs wood edge processing on the raw material board, but as mentioned above, the structure of the wood end differs for each unit board material, so each unit board material to be processed is It is necessary to replace the machining tool in the machining head. For example, even if the unit plate material is the same,
Such exchange is necessary if the specifications of the final product differ.

Conventionally, in a general tenon processing machine, the machine is temporarily stopped to replace the processing tool, but this replacement method has various inconveniences.

First of all, it is inevitable that the operating rate of the machinery will decrease.

Particularly in the case of wooden products made of a large number of unit boards, in order to smoothly perform assembly, painting, etc. in the final process, it is necessary to cut each unit board into several pieces at a constant ratio and supply them to the final process. Therefore, even in intermediate processing steps, it is not allowed to intensively process only the same unit plate material. In other words, the intermediate processing process has to be a high-mix, low-volume production type, and this also applies to tenon and tenon processing machines, which leads to frequent replacement of processing tools and frequent machine stoppages. That is, there is a special situation in which a decline in the operating rate due to individual replacements leads to a large decrease in the overall operating rate.

Next, there is a tendency for the manufacture of wooden products such as those mentioned above to be automated and to be carried out on a single line. In other words, work stations for butt end processing, width determination, wood edge drilling, etc. are installed along the conveyance line for workpieces, and the workpieces are transported one after another by the processing machines installed at each work station. This is a manufacturing method in which predetermined processing is automatically applied to plate materials. Therefore, when the processing machine at each work station is stopped to change the processing tool, the feeding of the workpiece must be interrupted during that time, so at least the processing machines at each work station upstream must also be stopped. It needs to be stopped more or less.

Moreover, when creating an automatic through-hole line like this, the time required for all machining is significantly reduced compared to when machining was performed individually, so the loss in overall operating rate due to machine stoppage is relatively small. It becomes a big thing. Of course, these things can also be said about tenon processing machines.

Furthermore, the processing head of a tenon processing machine or the like is generally arranged facing the conveyance line for the plate material to be processed. Therefore, workers must lean over the conveyor line to change processing tools, but this work can be extremely difficult and uncertain depending on the dimensions, structure, and arrangement of the mortise machine and processing head □. Become something.

An object of the present invention is to improve the performance of changing the working tool in order to solve the problems associated with changing the working tool in the conventional mortise and tenon machine as described above.

That is, in this invention, processing heads having the same structure are divided into two groups, and when one processing head group is placed at a processing position facing the transport line of the workpiece plate, the other processing head group faces the transport line of the workpiece board. The device is placed in a standby position separated from the

The present invention will be explained in more detail below with reference to the accompanying drawings.

FIG. 2 shows a first embodiment of the tenon and tenon processing machine of the present invention, which is of a rotary type. The upper part of the figure is fixed cage 1.
The lower part is a movable unit that can move according to the width of the workpiece plate W. A conveyance line for the workpiece plate W is provided between the two, and conveyor rollers and the like are normally arranged, but this is omitted in the figure.

Further, the workpiece W is fed in the direction of the arrow in the figure.

The above-mentioned fixed-side and movable-side units may have exactly the same structure, except for the relationship with the mechanism that drives the movable-side unit, which will be described later. Therefore, the same reference numerals will be used for the same parts below. The explanation will be given for the movable unit.

A base 21 that moves forward and backward along the rail 11 is installed on a rail 11 that extends between the two units in a direction that crosses the conveyor line for the plate material W to be processed. This base 2
A guide rail 22 extending in a direction perpendicular to the conveyance line is fixed on the top of the head holder 1, and a head holder 23 is installed on the guide seal 22 so as to be movable along the guide rail 22. Two sets of processing heads 24a+24b are additionally installed on the side of the head holder 23 facing the conveyance line, and processing heads 24a'y'24b' having the same structure are installed on the opposite side. There is. These processing heads 24a of the holder 26.

24 b + 24 a' + 24 b' support part 25
a is configured to be rotatable about a fixed point 0. Although the illustrated example shows a structure in which two VC processing heads are arranged on each side of the holder 26, the present invention is not limited to this, and in short, as long as one or more processing heads are arranged on one side. good.

A fluid pressure cylinder 25 such as an air cylinder is further provided on the base 21 and extends in a direction parallel to the conveyance line, and its output shaft 25a is connected to the processing head via a binion rack inside the head holder 23. It is connected to the support portion 25a. That is, when the output shaft 25a is driven by the fluid pressure cylinder 25 and moves in and out, the processing head support part 23af'; Processing head 24a+ 24b, 24a
It is configured to rotate 1800 times about the fixed point 0 with '+24b'. However, instead of the rotational drive mechanism consisting of a fluid pressure cylinder and a binion rack as described above, the output shaft of the reversible motor may be connected to the processing head support portion 25a via a worm wheel.

Further on the base 21 is a drive mechanism 26 for controlling the movement of the head holder 23 along the guide rail 2' 2K.
A ruler 27 is provided, which abuts and fixes the workpiece W on the conveyance line.

Separately from the unit, a reversible motor 12 is provided on the floor of the work station, and its output shaft 12a is threadedly engaged with a ruler 27 (or other appropriate part) of the movable unit, and its end is fixed. It is rotatably supported by a ruler 27 (or other appropriate part) of the side unit.

That is, when the output shaft +2a is rotated by being driven by the motor 12, the entire movable unit moves on the rail 11, approaches or moves away from the fixed unit, depending on the direction of rotation, and is moved between both rulers 27. The plate material W to be processed is clamped and fixed. Of course, the drive mechanism of the movable unit is not limited to this, and any known mechanism can be used as appropriate.

Now, in the state shown in Figure 2, the processing head 24a,
24b is in the processing position, and the processing head 24a' +
24b' is in the standby position. While in this machining position, the machining tools of the machining heads 24 a' + 24 b' are replaced according to a predetermined program.

During this time, of course, the processing heads 24a and 24b, which are in the processing position, perform predetermined tenon processing on the workpieces w that are being fed in one after another.
I'm in K1.

When the machining heads 24 a and 24 b have machined a predetermined number of workpieces W and it is time to replace the machining tools, the head holder 23 is driven by the drive mechanism 26 and moves to the guide rail 2 .
2, and then driven by the fluid pressure cylinder 25, the machining head support part 23a rotates 180 degrees about the fixed point O, and the machining heads 24a, 24b and the machining head 24a
' + 24 b' switches its position, and is driven by the drive mechanism 26 again, and the head holder 23 is moved to the guide rail 2.
2, and now the processing head 24 a' + 24
b' is placed in the processing position, and the processing heads 24a+24b are placed in the standby position. Therefore, the machining heads 24a' and 24go perform predetermined tenon machining on the next different workpiece plate W, and during this time, the machining tools of the machining heads 24a and 24b are replaced.

FIG. 6 shows a second embodiment of the tenon processing machine of the present invention (however, only the movable unit is shown), and is of a parallel movement type. Rail 11, reversible motor 12,
The base 21, ruler 27, etc. are exactly the same as those shown in FIG.

However, in this case, a 2m head holder 33°46 is used, and these are moved on rails 52, 42 provided on the base 21 in a direction perpendicular to the conveyance line.
Each has a drive mechanism 56,46. Furthermore, processing heads 54a are provided on the sides of the head holders 35 and 45 facing the conveyance line, respectively.

54b and processing heads 44a+44b are arranged.

In the state shown now, the machining heads 54a and 54b are in the machining position and are performing predetermined tenon machining, and during this time, the machining tools of the machining heads 44a and 44b in the standby position are replaced. At a predetermined timing, driven by the drive mechanism s6.46, the head holder 53 retreats on the rail 32 to place the processing heads 54ap, 54b at the machine position, and the head holder 45 moves forward on the rail 42 to place the processing head 44a and 44b are placed in the processing position.

Therefore, the machining heads 44a+44b perform predetermined tenon machining, and during this time, the machining tools of the machining heads 54a and 64b are replaced.

As is clear from the above, according to the present invention, the machining heads having the same structure are divided into two groups, and when one machining head group is in the machining position, the other machining head group is in the standby position. Since the machine stoppage is limited to changing the position of both processing head groups, it is extremely short, and therefore, even in the case of high-mix, low-volume production of wooden products, it is possible to keep the decrease in machine operating rate to the minimum necessary. Moreover, even when installed in an automatic piercing line, the flow of the workpiece is never disturbed by changing the processing tool. Moreover, since the processing tool is replaced at a standby position away from the conveyance line, the work is extremely easy and reliable.

[Brief explanation of the drawing]

FIG. 1: A plan view showing an example of the tenon processing machine of the present invention. FIG. 2: A plan view showing another example of the tenon processing machine of the present invention. 21... Base 22, 52, 42.
・・Guitra 25.55.45・・Head holder -ru 24at24bz24a't
24b'--processing head 54h, 54b, 44eL,
44b...Processing head patent applicant Nippon Gakki Manufacturing Co., Ltd. Shoda Iron Works Co., Ltd.

Claims (1)

[Scope of Claims] [1] Processing heads having the same structure are divided into two groups, and when one processing head group is placed at a processing position facing the conveyance line of the workpiece plate, the other processing head A plate material tenon processing machine, characterized in that a group is placed at a standby position separated from the conveyance line. [Prisoner] A head holder (25) is installed on the base (21) placed on the side of the transport line so that it can approach and move away from the transport line, and a head holder (25) is installed on the head holder in a horizontal direction. A rotatably provided head support part (25
On one side of the processing head group (24a, 24a,
24b), and the other machining head group (24a', 24b') are arranged on the opposite side thereof, and one machining head group is rotated by the rotation of the head support. Claim No. 1 characterized in that when the head group is placed in the processing position, the other head group is placed in the standby position.
] Processing machine described in section. (3) A base (21
), two sets of head holders (35, 45) are arranged in parallel so that they can approach and move away from the conveyance line, and on the other hand, on the side of the head holder facing the conveyance line, one of the processing head groups is installed. (54a + 54b), the other processing head group (44a, 44b) is arranged on the side facing the transfer line of the other head holder, and one head holder approaches the transfer line and performs its processing. The processing machine according to claim 1, wherein when the head group is placed in the processing position, the other head holder is separated from the conveyance line and the processing head group is placed in the standby position. .