JPH01240402A - Method and jig for packaging u-bent pipe - Google Patents

Abstract

PURPOSE:To prevent the disorderly pile-up of U-bent pipes at the time of packaging and thus improve operational stability and efficiency, by stacking a predetermined number of U-bent pipes having the same curvature by a first jig and thereafter the U-bent pipes having a smaller curvature by a second jig interposed between the U-bent pipe. CONSTITUTION:A first packaging jig is provided with side contact plates 3a and 3b at each end, horizontal legs 4a and 4b and telescropical bracing rods 5a-5c. A U-bent pipe 2 is placed on the opening and closing support stands 6a and 6b on the upper edge of said plates 3a and 3b, the support stands 6a and 6b are opened upwards with their straight parts brought into contact with the contact plates 3a and 3b and then a U-bent pipe 2a is guided into stacking. A support plate 8 for supporting a second packaging jig having wedge-shaped engaging part 8a at its end is provided inside the U-bent pipe 2a in order to prevent the disorderly heap of the U-bent pipe 2a and retain a predetermined space between itself and a second U-bent pipe 2b and the support plate 8 is replaced ultimatly with a wooden spacer for reuse. The dimension between the side contact plates 3a and 3b of the first packaging jig is adjusted to the inside dimension between both the straight parts of the U-bent pipe 2b, whereby the U-bent pipe 2b is stacked between the side plates 3a and 3b and the support plate 8.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a U-bend pipe packing method for packaging a large number of U-bend pipes into shipping wooden boxes, and a jig for unpacking the same. .

(Prior art) Conventionally, in the method of box-packing U-bend pipes, U-bend pipes with different bend curvatures are secured in advance for each U-bend pipe with the same outer diameter that can be packed into a packaging box. Then, the packaging was done manually one by one. That is,
As shown in FIG. 6, U-bend pipes 22a, 22b, 22c having the same outer diameter and different bend curvatures are placed in a wooden packaging box 21.
Before packaging the U-bend pipes 22a, 22b, and 22c with each bend curvature, separate storage space is secured (not shown) for each of the U-bend pipes 22a, 22b, and 22c. U-bend pipe 22b
, 22c, one tree at a time, and this process was repeated until the trees were stacked one by one. At that time, wooden spacers 2 are placed between each U-bend pipe 22a and 22b and between 22b and 22c at appropriate intervals in the pipe longitudinal direction.
Items were packed in boxes with 3 uprights to prevent them from collapsing. After achieving the state shown in FIG. 6, each U-bend pipe is cleaned with a final sponge and a plastic stopper is attached.Then, the sheet is turned over, a side plate is attached to the left side of FIG. 6, and the lid is closed.

(Problem to be Solved by the Invention) However, in the conventional method as described above, the spacers often fall down and must be corrected each time, which is inefficient, and the handling of packaging is troublesome, making it difficult to mechanize. was difficult. Furthermore, since the process is performed manually, deformation and staining of the material are likely to occur. Furthermore,
Since the U-bend pipes to be packed in boxes are stored separately for each U-bend pipe with a different bend curvature, a large storage space is required.

The present invention has been made in view of such conventional problems, and after stacking U-bent pipes with the same bend curvature, it is possible to stack bent pipes with a smaller bend curvature, and to improve the packaging handling. The purpose of this invention is to provide a method for packing U-bend pipes that can be mechanized, prevents stacking, and can be carried out stably, with very good workability, and a jig for the packing. It is.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention provides that when packing a U-bend pipe into a packaging box, the inner parts of both straight pipe parts of the U-bend pipe are placed inside the packaging box. In order to guide the U-bend pipe, a first jig having a pair of side abutting plates whose distance can be freely adjusted so as to correspond to the dimension between the inner sides of both straight pipe parts of this U-bend pipe is installed, and this first jig is When stacking a predetermined nN of U-bend pipes with the same bend curvature while guiding them by A support plate is provided between the U-bend pipe with a small bend curvature and the previous U-bend pipe with a large bend curvature, which corresponds to the dimension between the inner parts of both straight pipe parts of the U-bend pipe with a small bend curvature. A second jig is used to maintain a constant dimensional relationship between the two and to sequentially lower the bent pipe, which has a small bend curvature.

The first jig used in the packing method includes a pair of side plates held vertically so as to abut and guide the inner sides of both straight pipe parts of the U-bend pipe, and a space between the plates on both sides. and a telescoping tension rod, which is provided at the inner side of the U-bend pipe and can be adjusted to the size between the inner sides of the straight pipe parts of the U-bend pipe to be packed.

Furthermore, the second jig used in the packaging method is a support plate provided with a contract locking part that can be driven into the bottom of the packaging box.

(Function) By using the method and jig as described above, the present invention can
While guiding the inner sides of both straight pipe parts of the U-bend pipes with the side plates of the first packing jig, the required number of U-bend pipes with the same bend curvature are stacked in succession, and then the second packing jig is stacked. While the U-bend pipes stacked up are prevented from falling apart by the tool, the U-bend pipes with a small bend curvature are guided by the second jig and the side plate of the first packing jig whose interval is adjusted. The boxes are stacked one after another, and by repeating this process, a predetermined number of U-bend pipes are packed into boxes.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

Figure 1 (a) and (b) are plan and cross-sectional views of stacked bent pipes with maximum bend curvature, and Figures 2 (a) and (b) are 2
FIG. 6 is a plan view and a sectional view of a stacked state of U-bend pipes having the largest hend curvature. In the figure, 1 is a wooden packaging box, 2 is a U-bend pipe packed in the packaging box 1, and of the U-bend pipes 2, 2a is the one with the largest hend curvature, and 2b is the one with the second bend curvature. shows. 3a and 3b
is a side abutting plate, and in order to guide the inner side of both the straight pipe parts of the U-bend pipes 2a and 2b, the packaging box 1 is placed vertically in accordance with the dimension between the inner parts of the straight pipe parts. installed within. That is, in order to maintain its verticality, horizontal legs 4a and 4b are provided at the lower end to form an L-shape, and both side contact plates 3
In order to freely adjust the dimension between a and 3b, telescopic tension rods 5a, 5b, and 5C are provided. These both side contact plates 3a and 3b, horizontal legs 4a and 4b, and telescoping tension rods 5a to 5c
As shown in the plan view, a plurality of first packaging jigs (three in the embodiment) are installed in the longitudinal direction of the U-bend pipe 2. Here, opening/closing substitute stands 6a, 6b are provided on the upper edges of the side abutting plates 3a, 3b, so that the U-bend pipe 2 can be temporarily placed thereon. These mounting tables 5a and 5b can be opened upward around hinges 7A and 7b, so that the U-bend pipe 2 once placed
By lifting up the U-bend pipes 2a and opening them upward, the U-bend pipes 2a can be stacked up as shown in the figure by guiding the straight pipe parts of the U-bend pipes 20 while bringing them into contact with the side plates 3a and 3b. Figure 1 (b)).

When the stacking of the U-bend pipes 2a is completed in the states shown in Fig. 1 (a) and (b), the stacking of the U-bend pipes 2b with the second largest bend curvature is completed in the states of Figs. 2 (a) and (b). conduct.

In this case, when stacking the U-bend pipe 2b with the second largest bend curvature, the U-bend pipe 2a with the largest bend curvature is
Preventing stacking from collapsing and U with the second largest bend curvature
In order to maintain a constant gap between the U-bend pipe 2b and the U-bend pipe 2b, a support plate 8 having a draft-shaped locking portion 8a at its tip is provided inside the U-bend pipe 2a. At this time, the draft locking portion 8a is attached to the packaging box 1.
The lower part is driven into the bottom surface to prevent it from shifting, and the upper part is properly regulated with a lobe 8b or the like. This support plate 8 constitutes a second packaging jig, and this support plate 8 will eventually be reused by replacing it with a wooden spacer as in the conventional case. Also,
In the state shown in FIG. 2, the first packaging jig has the dimension between the side abutting plates 3a and 3b that is U, which has the second largest bend curvature.
It is adjusted to correspond to the dimension between the inner sides of both straight pipe parts of the bend pipe 2b, and both straight pipe parts of the U-bend pipe 2b are guided between the side abutment plates 3a, 3b and the support temporary 8. It will be piled up.

At this time, as well as the U-bend pipe 2a, the U-bend pipe 2b is placed on the opening/closing stand 6a, 6b! ! placed,
They will be accumulated sequentially.

The first packaging jig is configured as shown in FIG. 3, for example. In the figure, horizontal legs 4a, 4b are provided at the lower ends of both side contact plates 3a, 3b, and tapered surfaces 3a', 3 are provided on the outer side of the upper edge to serve as guides when inserting the U-bend pipe 2.
b', and an openable/closable stand 6a provided at the upper end,
6b is rotatable in the direction of the arrow around hinges 7a and 7b. Further, the telescoping tension rods 5a to 5c have both ends placed on tension rod receiving members 9a and 9b provided on the side abutment plates 3a and 3b, respectively.
The inner shaft 10a and the outer pipe t are arranged so as to extend and contract between them.
It is comprised of ab and a lock nut 10c for expanding and contracting to lock the two. By preparing several types of telescopic tension rods 5a to 5c with different lengths, the length can be changed by expansion and contraction (and by changing the dimensions between the side abutment plates 3a and 3b). It can be used in a wide range of applications.In addition, as shown in the figure, by providing three telescopic tension rods 5a to 5c, both side contact plates 3
The parallel relationship between a and 3b can be stably maintained.

Furthermore, with only one type of expansion and contraction of the telescoping tension rods 5a to 5c,
This telescopic tension rod 5a can be used as long as it can accommodate all bend curvatures of the U-bend pipe 2 to be packed.
Both ends or one end of ~5c are the both-side contact plates 3a and 3b, respectively.
It can also be fixed type. In addition, in this FIG. 3, reference numeral 11 indicated by an imaginary line is a stopper, and the above-mentioned gutter plates 3a, 3
When setting the dimensions between the side plates 3a and 3b, the inner wall of the packaging box 1 and the gutter plates 3a and 3b
or the dimension between support plate 8 and gutter + Fi-3a and 3
b, that is, the dimension corresponding to the pipe diameter of the U-bend pipe 2, is to be protruded in the horizontal direction and its tip is in contact with the inner wall of the packaging box 1 or the support plate 8. This makes it possible to ensure a dimension l that allows the U-bend pipe 2 to be inserted.

By providing this stopper 11, it is possible to more reliably and quickly set a gap corresponding to the pipe diameter for packing the U-bend pipes 2 into boxes.

Next, the support plate 8, which is the second packaging jig, is constructed as shown in FIG. 4, for example. The main body of the support plate 8 is made of metal and has a wedge-shaped locking portion 8a formed at its lower end, and its surface is coated with vinyl to prevent damage to the U-bend pipe 2. In addition, a hole 8c is formed in the upper part for inserting the rope 8b. In the above explanation, it was explained that this support plate 8 will eventually be replaced with a wooden spacer, but the timing of its replacement is as long as there is no risk of the spacer falling down even during the stacking of the U-bend pipes 2b. It may be replaced, and there is no particular limitation as long as it is replaced after that.

FIG. 5 shows a state in which the U-bend pipe 2 is handled by the conveyor 12 and packed into the packaging box 1. The conveyor 12 handles the U-bend pipe 2 by chuck parts 14a and 14b provided on a pair of arms 13a and 13b, and the dimension between the arms 13a and 13b can be varied in accordance with the bend curvature. It looks like this. The bill conveyor 12 transports the U onto the packaging box 1.
The bend pipe 2 is once placed on the mounting stands 6a, 6b provided on the gutter plates 3a, 3b as described above. The subsequent packaging work is as described above.

(Effects of the Invention) As explained above, the present invention has a structure in which, when a U-bend pipe is packed in a packaging box, dimensions are set in advance in the packaging box to correspond to the dimensions between the inner sides of the double-sided pipe parts of the U-bend pipe. U-bend pipes with the same bend curvature are stacked using the first packing jig with gutter plates as a guide, and then the previously stacked U-bend pipes are stacked using the second packing jig consisting of temporary supports. Since the work is to stack U-bend pipes with a smaller rehend curvature than the previously stacked U-bend pipes while preventing them from collapsing, it prevents them from collapsing during the packing process.
It can be performed stably and quickly, and work efficiency can be significantly improved. Furthermore, since U-bend pipes having the same bend curvature are stacked one after another, it is possible to mechanize the handling, which is an extremely effective invention.

[Brief explanation of the drawing]

FIGS. 1(A) and 1(B) show an embodiment of the present invention, and are a plan view and a sectional view showing the packing state of a U-bend pipe with the maximum bend curvature;
Figure 2 (a) and (b) show U with the second largest bend curvature.
3 is a perspective view of the first packing jig, FIG. 4 is a perspective view of the second packing jig, and FIG. 5 is a perspective view of the second packing jig. FIG. 6 is an explanatory view showing how a U-bend pipe is handled by a conveyor, and a plan view showing a conventional packing state. 1 is the packaging box, 2 is the U-bend pipe, 3a and 3b are the temporary measurements, 5
a, 5b, and 5C are telescoping tension rods, 6a, 6b are opening/closing stands, and 8 is a support plate. (Hano) 1 Ru2 Figure 3 Figure 4 Figure 5

Claims (2)

[Claims] (1) When packing a U-bend pipe into a packaging box, the dimensions between the inside parts of both straight pipe parts of the U-bend pipe should be matched to guide the inside parts of both straight pipe parts of the U-bend pipe inside the packaging box. A first jig having a pair of side abutting plates whose separation dimension can be adjusted as shown in FIG. When stacking U-bend pipes with a smaller bend curvature than bent pipes, the dimension between the side plates of the first jig above corresponds to the dimension between the inner sides of both straight pipe parts of the U-bend pipe with the small bend curvature. A second jig made of a support plate is interposed between this U-bend pipe with a small bend curvature and the previous U-bend pipe with a large bend curvature, and the bend curvature is adjusted while maintaining a constant dimensional relationship between the two. A method for packing U-bend pipes, which is characterized by sequentially stacking small U-bend pipes. (2) A first jig used in the method for packing a U-bend pipe according to claim 1, wherein a pair of jigs are vertically held so as to abut and guide the inner sides of both straight pipe parts of the U-bend pipe. A side plate and
It is characterized by comprising a telescoping tension rod which is provided between both side contact plates and whose dimension between both side contact plates can be adjusted to the dimension between the inner sides of both straight pipe sections of the U-bend pipe to be packed. Jig for packing U-bend pipes. (3) A second jig used in the method for packing U-bend pipes according to claim 1, which is used by being interposed between both U-bend pipes that are stacked in order from the one with the largest bend curvature to the one with the smallest bend curvature. A packaging jig for U-bend pipes, characterized by comprising a support plate provided with a wedge-shaped locking part that can be driven into the bottom of a packaging box.