JPH01180302A - Automatic nailer - Google Patents

Abstract

PURPOSE:To obtain at all times a stable nailing strength and a nailing accuracy and also improve the working efficiency in making a plurality of nails to be nailed simultaneously by operating the required parts of a nail supplier and nailer in selecting in accordance with the position pattern of the timber board dimension and nailing. CONSTITUTION:A suitable nail is selected out of two kinds of nails by nail supplier 4 and a nail dropping motion is performed in accordance with the nailing pattern set from the board width condition of a wooden frame 1. Namely, a required nail according to the nailing position pattern is moved to a hose 5 and dropped through a hose 7 via a hose joint 6, and then supplied to the nailing head of the nailer 8. Simultaneously, the nailer 8 is moved symmetrically with respect to the center (X) of the wooden frame 1 to a suitable nailing position according to the length of an upper board 1a and nailed at one time on the required position corresponding to the nailing position pattern by a hammer 17 through a nailing cylinder. When a nailing is completed, the nailing cylinder and nailing head 15 are withdrawn, while the nailed wooden frame is transported to the next process and becomes a waiting state until the next motion.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention relates to an automatic nailing device, and in particular, an automatic nailing device suitable for automating the nailing operation of wood used for packaging articles in wooden boxes. It is related to.

[Prior Art] At production sites that make to order products, products are often handled in accordance with customer requirements, and there is a trend toward high-mix, low-volume production. As factory automation (FA) progresses in production, wooden box packaging must also be adapted to the production side.

On the other hand, packaging specifications in the logistics field need to be improved, such as using single-corrugated cardboard and developing new materials, but wooden box packaging has characteristics that make it difficult to throw away due to its strength and price. However, the reality is that wooden box packaging has traditionally relied on manual labor.

Conventional nailing machines drive each nail one by one, and the width and thickness of the wood for the wooden frame that the nails are to be driven into.

Replacing nails to match the combination of lengths, etc. was also a manual process, requiring a large amount of man-hours.

Furthermore, the positioning of nails into the wood during the manufacture of wooden frames was done manually, relying on experience and intuition, and was not automated.

[Problem to be solved by the invention] Conventional nailers drive nails one by one, and when making a wooden box, it is necessary to hold the nailer in hand and drive the nails one by one according to the dimensions of the wood for the wooden frame. The nails were driven by relying on experience and intuition to determine the position and angle of the nail.

In addition, the work of replacing nails depending on the type of nail suitable for the board size was done manually. For this reason, not only was it not possible to obtain a stable precision 9 strength for the wooden box, but it also required a large amount of man-hours.

The present invention has been made to solve the problems of the prior art described above, and it is possible to automatically select and set the nail type and nailing position according to the thickness, width, etc. of the wood, and to ensure stable nailing at all times. It is an object of the present invention to provide an automatic nailing device that has high strength and nailing accuracy, can drive a plurality of nails at the same time, and can improve work efficiency.

[Means for Solving the Problems] In order to achieve the above object, the automatic nailing device according to the present invention has a structure in which the automatic nailing device according to the present invention is arranged so that the nails transported to the nailing work position are located remotely on the wood to be driven. , a nail supply device comprising a nail storage box, a plurality of needle delivery means for guiding the nails arranged in the nail storage box to a plurality of nail dropping hoses according to the pattern of nailing positions, and a driving means thereof; A nailing device comprising a plurality of nailing heads located close to the wood to be nailed and operated according to the nailing position pattern, a nailing hammer corresponding to each nailing head, and its driving means; ,
A plurality of nails m connecting the miller nail supply device and the nail driving device
1 hose, and a control device that selects the type of nail according to the size of the wood board and the nailing position pattern and operates the necessary parts of the nail supply device and the nailing device.

Additionally, the idea behind developing the present invention is as follows.

Conventionally, nailing machines were designed to drive one nail at a time, but now they can drive several nails at a time, making it possible to adapt to nailing positions that change arbitrarily depending on the combination of wood. For example, the positions are patterned into 23 patterns, the types of nails corresponding to this pattern are set to multiple types, for example, 2 types, the number of nails to be driven is set to multiple numbers, for example, up to 6 nails can be driven at the same time, and the nails are driven to multiple heads, for example, 6 types. The idea was to form a unit into a nailing section.

Positioning for nailing is achieved by accurately moving the nailing head using a servo motor or the like.

[Effect] The working of the above technical means is as follows.

The automatic nailing device of the present invention can automatically replace and selectively supply two types of nails, for example, and can perform 23 different types of nails from a unitized nailing section having, for example, six nailing heads. The nailing positions of the pattern can be selected and set, and up to six nails can be driven at the same time. In other words, the work of replacing nails is 1. For example, two types of nails are stored separately in two needle storage boxes, and the nails are replaced by changing the cylinder that supplies the nails according to the arbitrarily changing thickness of the wood to be nailed. It is a choice.

Further, the nailing position is selected by switching the nail dropping cylinders attached to each of the two nail storage boxes to supply nails to the nailing position corresponding to the width of the wood board.

A plurality of nails supplied to the nailing device are simultaneously driven into wood by pushing out a hammer provided in the nailing device with air.

As a result, nailing is performed at an appropriate nailing position, and stable nailing strength and nailing accuracy are always obtained.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 9.

FIG. 1 is a schematic configuration diagram of an automatic nailing device according to an embodiment of the present invention, FIG. 2 is an enlarged perspective view showing the needle storage box partially opened, and FIG. FIG. 4 is a front view showing the main structure of the nail supply device shown in FIG. 1. FIG. Enlarged view of P section.

5 is a front view showing the main structure of the nailing device shown in FIG. 1, FIG. 6 is an explanatory diagram of the operation of the nail feeding device shown in FIG. 3, and FIG. FIG. 8 is an enlarged sectional view of the head section, FIG. 8 is an enlarged side view of the nailing device section of FIG. 5, and FIG. 9 is a basic pattern diagram of the nailing device.

In Fig. 1, 1 is a wooden frame assembled in a grid pattern;
la is the upper plate of wooden frame 1, 1b is the lower plate of wooden frame 1, 2 is
This is a cart that transports the wooden frame 1 to the nailing work position.

3 is a frame of an automatic nail driving device, 4 is a nail supply device installed on the frame 3a at a high position on the wooden frame 1 where nails are to be driven, and 5 is a needle storage box of the nail supply device 4 (described later). A nail drop hose 7 that guides the nails 9 delivered from the nail drop hose 7 is a nail drop hose connected to a plurality of nail drive heads according to a nail drive position pattern described later, and these nail drop hoses 5, 7.
is made of vinyl chloride. Reference numeral 6 indicates a hose joint for joining the nail dropping hoses 5 and 7, and 8 indicates a nailing device installed on the frame 3b at a lower position on the wooden frame 1 to which nails are to be driven.

These nine parts of each device are arranged symmetrically with respect to the center line X of the wooden frame 1 as shown in FIG. 1, and the automatic nailing device is configured by a control circuit of a control device (not shown). There is.

Before explaining the detailed configuration of each part of the automatic nailing device shown in FIG. 1, the nailing position pattern will be explained with reference to FIG. 9.

In the past, people used to drive several nails based on experience and intuition, depending on the combination of the width of the wood for the wooden frame that needed to be nailed. To advance the automation of nail-driving work, we created a pattern of nail-driving positions and number of nails and stored them in advance in a central control unit (computer, etc. depending on the scale of the equipment).

The one shown in Fig. 9 is an example of nine basic patterns, where the 0 mark indicates the common nailing position to be selected, and the - mark indicates the actual nailing position selected depending on the board width combination. There is. Number of plate width combination below each time (unit: mm)
is written, and it is set as a pattern to drive nails at positions like marks for such board width.

Although nine basic patterns are shown in FIG. 9, in this embodiment, 23 patterns are input as patterns that can be applied to a device that can drive a maximum of six nails at once.

The board width is 60mm according to the generally widely used results.
There are five combinations: 75, 90, 105, and 120 mm.

Next, the needle storage box 10 shown in FIG. 2, which explains the detailed configuration of each part of the automatic nail driving device shown in FIG. The main parts are shown open.

Nail storage box 10 (10-1, 1O-2 (7) generic name) is.

Width of the wooden board for the wooden frame 1 to be nailed (lower board 1 shown in Figure 1)
Two types of nails can be selected and used according to the combination of the width (width of b), thickness (combined thickness of upper plate 1a and lower plate 1b in Fig. 1), length, etc. That is, nail storage box 1, 0-1 and 1
Nails of different sizes can be arranged and stored in 0-2. By adjusting the groove width d of the crosspiece 10a shown in FIG. 2, nails of a desired size can be accommodated.

In the nail supply device 4 shown in FIG. 3, nails 9-1 are stored in the nail storage box 10-1, and nails 9-2 are stored in six rows in the nail storage box 10-2.

11-1 and 11-2 are nail storage boxes 10-1 and 1, respectively.
0-2 is a nail dropping plate with nail passing grooves 11a formed at the positions of six rows of nails in the lower part; 12 is a nail dropping plate 11-1;
．． A pneumatic nail drop cylinder 13-1.13-2, which is a driving means for operating the nail drop plate 11-2 in the left-right direction, is arranged to move the nail storage box 10 in a direction perpendicular to the nail drop plate 11-1.11-2. -1.10-2 Nail receiving rib plates 13-1.13-2 are arranged opposite to the nail receiving rib plates 13-1 and 13-2, respectively. These are nail receiving cylinders for the nails 9-1.
It comprises a plurality of needle delivery means for guiding the needle 9-2 to the nail dropping hose according to the pattern of nailing positions, and a driving means therefor.

At the hose joint shown in Figure 4, 5-1.5
-2 is a nail drop hose that guides the nails 9-1 and 9-2 delivered from the nail storage boxes 10-1 and 10-2, respectively.

As shown in Figure 4(b), each nail drop hose 5-1.5
-2 joins at the top of hose joint 6 and hose 5a
becomes. FIG. 4(b) shows that the nail 9-1 is guided as shown by the arrow, and when the nail 9-2 is guided by the operation of the nail dropping cylinder 12 and the nail receiving cylinder 14, the nail dropping hose is shown. The nail 9-2 will fall from the nail 5-2 to the hose 5a.

In the hose joint 6, each nail drop hose position is set corresponding to the nail driving position pattern, and there are six nail drop hoses 7-1.7-2.7-3°7-4.7-5. .7-
6 with a hose joint 6.

Next, details of the nailing device section will be explained with reference to Fig. 5.7.8.

In FIG. 5 and FIG. 8, 7 (general term for 7-1 to 7-6) is the nail dropping hose, and 15 is six nailing heads 15-1 to 15- according to the nailing position pattern. 6
(15-1 shown in FIG. 7), a nailing head constitutes a unit, 16 is a pneumatic nailing cylinder related to the driving means of the nailing hammer, and 17 is provided for each nailing head. 6 hammers.

Details of each nailing head corresponding to the nailing position pattern are shown in FIG. 7 for the nailing head 15-1.

As shown in FIG. 7, a nail drop hose 7-1 is connected to a nail driving head 15-1 to drive a nail 9-1 into a wooden frame 1. 15a is a nail passage connected to the nail dropping hose 7-1, 15b is a nail passage that guides the nail 9-1 to the nailing position as shown by the two-dot chain line, and 18 is a nail to be driven into the wooden frame 1. A spring guide 15c, which is an elastic guide means for correctly holding the nail 9-1 in the nail passage 15b, is a hammer guide passage through which the hammer 17 is driven in the nail holding direction.

Next, the operation of the automatic nailing device having such a configuration will be explained with reference to the above-mentioned figures and FIG. 6.

The wooden frames 1 assembled in a cross-shaped structure are transported by a trolley 2 to a nailing work position at the bottom of the nailing device, and the nailing work is started.

Upper plate 1a and lower plate 1b of wooden frame 1 transported by trolley 2
Based on the combination of board thickness and board width, the nails to be used and the pattern of nailing positions are selected and set based on the data stored in advance in the central controller, and the central controller sends the nail feeding device 4. A control command is output to the control section of the nailing device i18.

The nail supply device 4 selects an appropriate nail 9 from two types of nails,
In addition, according to the nailing pattern set from the board width condition of the wooden frame 1, a nail storage box 10 (general term for 10-1 and 10-2), a nail dropping plate 11° and a nail receiving rib plate 13 (
13-1 and 13-2), and the nail dropping operation to the nail dropping hose 25 is performed.

This operating procedure will be explained with reference to FIG.

The (a) side of FIG. 6 is a schematic front view showing a portion of the left end of the nail supply device, that is, only one row of six rows of nails, and the (b) side is a schematic side view of (a).

6(la) and (lb) show the nail receiving rib plate 13 supporting the nails arranged in the nail storage box 10. FIG. From this state, the nail receiving plate 13 in the row corresponding to the nailing position pattern moves down in the direction of the arrow as shown in FIG. 6 (2a) and (2b) by the operation of the nail receiving cylinder 14, and the row of nails descends. Then, when the nail drop plate 11 is pulled in the direction of the arrow shown in FIG. 6 (3a) and (3b) by the operation of the nail drop cylinder 12,
The delivered nails 9, that is, the required nails 9 corresponding to the nailing position pattern are removed from the nail receiving plate 13, moved to the nail dropping hose 5, and dropped within the nail dropping hose 5.

Nail drop hose 5 (generic term for 5-1, 5-2, nail 9 that has dropped either 5-1 or 5-2 depending on the nail selection)
is the nail drop hose 7 (7-1~
Generic term for 7-6, 7-1~ corresponding to nailing position pattern
7-6), and remove the nail drop hose 7.
is supplied to the nailing head 15 (any one or more of 15-1 to 15-6 corresponding to the nailing position pattern) of the connected nailing device 8.

Simultaneously with these operations, the nailing device 8 moves symmetrically with respect to the center X of the wooden frame 1 to an appropriate nailing position depending on the length of the upper plate 1a.

As the nailing head 15 moves to the nailing position of the upper plate 1a as shown in FIG. By the operation of , the hammer 17 drives the nails into the required nailing positions all at once.

When the nailing is finished, the nailing cylinder 16 is returned to its original position, and the nailing head 15 is also retracted, and the nailed wooden frame is transported to the next process and placed in a standby state until the next operation.

According to this embodiment, a plurality of nails corresponding to the nailing position pattern can be driven simultaneously, the type of nails can be automatically selected according to the thickness and width of the wood for the wooden frame, and the nailing position can be adjusted. Since automatic selection and setting are possible, stable nailing strength and nailing accuracy can always be obtained, which has the effect of improving operating efficiency.

Note that the automatic nailing device shown in the above embodiment is as follows.

For example, it is suitable for use as a part of automated equipment for wooden box packaging, including a wood supply section, a wood cutting section, a wooden frame assembly section, etc., but it goes without saying that it can also be used as an independent work facility.

Furthermore, in the above embodiment, there are two types of nails, 23 nailing position patterns, and the number of nails that can be driven at a time, that is, the number of nailing heads is six. Not limited to, 3 or more types of nails, -
It is also possible to design a device that can drive more than six nails at a time.

Furthermore, in the above embodiment, the nail supply device, nail driving device, and nail dropping hose were installed symmetrically with respect to the center of the wooden frame, but each device may be installed symmetrically depending on the scale and purpose of the equipment. You don't have to.

[Effects of the Invention] As described above, according to the present invention, the nail type and nailing position can be automatically selected and set according to the thickness and width of the wood, and the nail driving strength and nail driving strength are always stable. It is possible to provide an automatic nail driving device that can achieve driving accuracy, drive a plurality of nails at the same time, and improve work efficiency.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of an automatic nail driving device according to an embodiment of the present invention, FIG. 2 is an enlarged perspective view showing a part of the nail storage box opened, and FIG. 1 is a front view showing the main structure of the nail supply device section, and FIG. 4 is a block diagram of the hose joint section of the IML, (a) is a perspective view, (b) is
Enlarged view of P section. 5 is a front view showing the main structure of the nail driving device shown in FIG. 1, FIG. 6 is an explanatory diagram of the operation of the nail supply device shown in FIG. Enlarged sectional view of the striking head part, No. 8
The figure is an enlarged side view of the nailing device section in Figure 5, and Figure 9 is an enlarged side view of the nailing device section in Figure 5.
It is a basic pattern diagram of nailing positions. 1...Wooden frame, la...upper board, 1b...lower board, 4.
...Nail supply device, 5.5-1.5-2.7.7-1.7
-2.7-3.7-4.7-5.7-6... Nail dropping hose, 6... Hose joint, 8... Nailing device. 9.9-1.9-2... Nail, 10.10-1.10-
2... Nail storage box, 11.11-1.11-2... Nail drop plate, 12... Nail drop cylinder, 13, 13
-1.13-2... Needle receiving plate, 14... Needle receiving cylinder, 15.15-1... Nailing head. 15a, 15b... Nail passage, 15c... Hammer guide passage, 16... Nailing cylinder, 17... Hammer, 18... Spring guide.

Claims (1)

[Claims] 1. A nail storage box, which is transported to a nailing work position and is located at a distance on the wood to be nailed, and a pattern of nailing positions for nails arranged in this nail storage box. a nail feeding device consisting of a plurality of nail delivery means and a driving means thereof, which guide the nails to a plurality of nail dropping hoses according to the number of nails to be driven; A nailing device consisting of a plurality of nailing heads, a nailing hammer corresponding to each nailing head, and its driving means, a plurality of nail dropping hoses connecting these nail supply devices and the nailing device, and the above-mentioned wood. 1. An automatic nailing device comprising: a control device that selects a type of nail according to plate dimensions and a nailing position pattern and operates necessary parts of the nail supply device and the nailing device. 2. In the device described in claim 1, the nail supply device includes a plurality of nail storage boxes according to nail sizes to be selected;
Each of the plurality of nail storage boxes is provided with a nail dropping plate and a nail receiving plate to deliver the nails to a plurality of nail dropping hoses, and a nail dropping cylinder and a nail receiving cylinder related to the driving means thereof. Automatic nailing device. 3. In the thing described in claim 1, each of the plurality of nailing heads has a nail passage connected to a plurality of nail dropping hoses, and a nail to be driven into the wood is correctly held along the nail passage. An automatic nailing device comprising: an elastic guide means for driving the nail; and a hammer guide path for driving a nail hammer in the nail holding direction of the automatic nailing device. 4. In any one of claims 1 to 3, there is provided a nail dropping hose for guiding nails delivered from a plurality of nail storage boxes according to nail dimensions, and a nail drop hose for guiding nails delivered from a plurality of nail storage boxes according to nail dimensions, An automatic nailing device characterized by comprising a nail dropping hose connected to a plurality of nailing heads, and a hose joint portion for joining the two.