JPS5859046A - Welding device - Google Patents

Abstract

PURPOSE:To provide a welding device in which each of two holding devices, that can be relatively separated and approximate to each other, performs operations to correct holding of various types and sizes of molded products, and two objects to be welded are caused to match each other with the correction of the sizes thereof to mold them together. CONSTITUTION:Each holding device is provided with a pressing board 12a and a holding frame 13a. Each holding frame 13a is equipped with stationary frame members 14a and 14b for positioning an object 23 to be welded in a given position on the pressing board 12a, and a moving frame member 18 for correcting a holding and the size of the object 23a to be welded through pressing of the object 23a against the stationary frame member. The moving frame member 18 is moved by a hydraulic piston device 21. Each of the upper and the lower molded products 23a is situated in a given position and corrected to a given size, and this improves matching of the two objects at a time when they are welded together.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention (relating to a leaf welding device H, more specifically, (1) relates to a welding device used when welding and joining synthetic resin molded products to form a finished molded product.

Synthetic resin molded products (hereinafter simply referred to as molded products), such as injection molding or extrusion molding, have traditionally been welded together to obtain products. (1+1 Nara Yli welding equipment is used)The structure of such a conventional welding equipment tv is to accommodate and hold each object to be welded and to weld it. A pair of holding devices N that are arranged opposite to each other and can be approached and separated from each other, and a heating plate that is provided so as to be able to enter and exit the gap when the holding devices are separated, The holding device tank is equipped with a pressing plate for pressing and joining the objects to be welded which are held vertically opposite each other by the approach of the holding device, and a holding frame for holding the objects to be welded on the pressing plate. It was.

By the way, the welding device produces phase 77, VC welding 1jν
It is known that each molded article that is combined shrinks with a certain predetermined curve along with the molding edge.

Therefore, such a molded product V1 is usually molded using a mold suitable for this purpose in order to obtain a size slightly larger than the designed dimensions of the finished product. After a predetermined period of time has elapsed during the molding process, each of these molded products is designed to have the dimensions of the finished product in order to accurately align the two molded products and to take into account the shrinkage error of each molded product. , 1Jji frames, their dimensions are adjusted, and they are aligned and welded together. In particular, when the completed molded product is a pallet, accurate alignment of the molded parts of the upper and lower hand parts is important because the molded parts of each hand part to be welded are large and the welding surface is This is particularly important because differences in warpage or shrinkage between molded products, which occur noticeably due to narrowing, cause displacement of the joint surfaces, resulting in a decrease in the strength of the welded part.

In the welding apparatus, the formwork used for such a purpose has an internal shape that is substantially the same as the external shape of the object to be welded (molded product), but whose dimensions are slightly smaller (dimensions of the finished product in Design-F). A fixed holding frame having a shape was installed on the opposing surfaces of each pressing plate1, but this fixed holding frame and pressing plate included There is a problem that it is only possible to hold and straighten molded products of the size of 1 glaze, resulting in defects.
.

Therefore, the eleventh point of the invention is 1. A welding device for welding two broken body anastomoses to phase /-7 while adjusting the dimensions thereof, and 7. ;III %l
The object of the present invention is to provide a welding apparatus in which each of a pair of holding apparatuses that can be accessed and separated from each other is capable of holding molded articles of all kinds of sizes. If you contract , the corresponding ・1ε1e goes,
The welded object to be welded and joined is -ff: J'+ II
Placed vertically facing each other to maintain V shape and weld
．． A pair of holding devices that can be approached and separated from each other are installed so that when the holding device is separated, the gap can be accessed and removed.
In the welding device consisting of a heated plate and a heated plate, the holding device connects the press plate and a holding frame provided on the inner surface of the core press plate.
The holding frame presses the object to be welded! - Predetermined hook If on the board
a fixing frame member disposed on the pressing plate that comes into contact with two adjacent sides of the welded object to regulate the movement of the welded object in order to position the welded object; A movable frame member movably arranged with respect to the pressing plate to press the welded object against the fixed frame member from each opposing side to hold and correct the dimensions thereof, and a device for moving the movable frame member. It consists of.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The bathwear apparatus of the present invention will be described in more detail below with reference to preferred embodiments shown in the accompanying drawings. Note that the implementation column indicates a welding device used to form a pallet as a column of synthetic resin molded products (finished products), and therefore, in the following description, the synthetic resin molded products will be simply referred to as pallets.

In FIG. 1, a bathwear apparatus according to the present invention is generally designated by the reference numeral 10. This welding device 10 includes a pair of holding devices 11a, lj that are vertically spaced apart and arranged opposite to each other.
b, and a heating plate (not shown) provided so as to be able to move in and out within this space.

Since this heating plate is well known in this type of welding apparatus 10, detailed explanation thereof will be omitted.

The names of the holding devices ft1la and ft1b include pressing plates 12a and 12b, respectively, and holding frames 13a and 131) provided with H' on the pressing plates. This holding frame 13a.

13b are completely the same in construction, and to explain one of them with reference to FIG. 2, the upper and lower molded parts, which are formed into a pallet by welding each other, are placed on the pressing plate 12a. In order to position the molded product at a predetermined position, fixed frame members 14a and 14b are provided that contact two adjacent sides of the molded product to regulate the movement of the molded product.

The fixed frame portions 114a, 14b have a cross-sectional shape, and are arranged with their flange portions 15a, 15b, which are in close contact with the press plates 12a, 12a, facing e1 toward the outer edge of the press plate. Each of these fixed frame portions 4A14 a, ] 4
Each flange part in L) has a plurality of grooves r]
Each fixed frame member 14a, 14b+, l, and the press plate 12 are fixed by tightening the pin 17 which is screwed onto the press plate 12a through the slot.
It is fixed at a. However, when fixed, it means that C remains immovable relative to the press plate 12a during positioning of the molded product, and both fixed frame members 14a, 14
b is attached to the above-mentioned suppression plate 12a at a relative angle, for example, both fixed frame members 14a.

Said slot 16 allows its position to be moved slightly so that 14b can be adjusted to be exactly orthogonal. Note that such fixed frame members 14a, 1
The fixing/fine adjustment means for fixing and fine-adjusting 4b to the pressing plate 12a is not limited to the slots 16 and bolts 17 as described above, but also by connecting threaded rods to each of the fixing frame members 14a and 14b, and attaching the rods to the pressing plate 12a. Various methods can be applied, such as screwing it through an upright fixing nut.

In the embodiment shown in FIG. 2, the fixed frame member 14a
, 14b are separate pieces, and therefore, the above-mentioned relative angle adjustment may be required when attaching them to the press plate 12. However, as shown in FIG. 3, these two fixed frames Member 14a.

14b may be fixedly connected or integrally formed at a predetermined relative angle.

A holding frame 1 having such fixed frame members 14a and 14b
3a further includes a movable frame member 18, and the movable frame member 1
8, as is clear from FIG. 2, the fixed frame part old 14a;
14b and 14b are arranged as a key-shaped integral body when viewed in half at a position opposite to a corner formed in both the fixing frames so as to partition a rectangular area. 1,
The frame member 18 has the same cross-sectional shape as the fixed frame part, and the corner part 19 of the movable frame member 18 is positioned by contacting the fixed frame part with two sides. The tip of the piston rod 22 of the hydraulic piston device 21 fixed on the pressure plate 12a is located on the imaginary line 20 that corresponds to the diagonal line of the product 23a, and the tip of the piston rod 22 is fixed on the 7 flange portion 3o outside the corner 19 of the hydraulic piston device 21. 1, this piston rod 22 is connected to the Di A! It coincides with the λ line 2() and extends in the same direction. In response to the operation of the hydraulic piston device 21, the pivoting frame member 18 moves its corner 19 in parallel along the virtual line 1120, and as a result, the fixed frame members 14a and 14b are moved in parallel. A large number of rectangular areas of similar shapes can be partitioned as a common side 3, which means that the fixed frame member 14a.

14b, the molded product 23a positioned with its two adjacent sides in contact is pressed by the movable frame member 18 on the other two sides of the molded product from the opposite corner side, and its dimensions are adjusted. It means.

Such a movable frame member 18 is extended in that direction to perform accurate parallel movement along the aforementioned direction and to maintain its posture with respect to the movement path.
two rails 24a formed in a row and spaced apart from each other;
24 b. The configuration of this rail will be explained when other embodiments are explained.

FIG. 3 shows another embodiment of the holding frame 13a in the welding apparatus of the present invention. In the holding frame 13a of this embodiment, the fixed frame members 14a and 14b are arranged at a predetermined relative angle (9
0°) and are fixedly connected, that is, integrated.

In the holding frame 13a of this embodiment, the movable frame member that presses two adjacent sides of the molded product against the fixed frame members 14a and 14b has separate first and second movable frame members for each side. 18a and 18b, each of which has rails 25a and 25 for A9, respectively, so that they can move independently.
5b and 26a, 26b and hydraulic piston device 2
7b, Ra7 is movably arranged on the suppression board 12a. Of course, these rails, etc. are the '4 riT moving frame frame member 18a8b! Fixed frame member 1 facing each other
r1 is set to 1 so that 1-11 can be moved parallel to 4a and 14b by tJ.

If the holding frame 13a of such an embodiment is 1:, it is not limited to the size of the molded product of phase 1 or larger as in the embodiment shown in FIG. It is easy to maintain the old ψ method and make the original sound.

FIG. 4 shows another embodiment of the holding frame 13a. This embodiment has basically the same structure as the embodiment shown in FIG. The cope part 1 is made up of a short member so as to partially press the two sides of the 1" V. Therefore, it is only necessary that the rails held in these f11 movements are also one each. be.

FIG. 5(a) shows the attachment of the movable frame member and the rail based on the structure of the embodiment shown in FIG. 4. That is, four parts 2 having a rectangular cross section are formed on the surface of the suppression plate 12a.
8 is formed by extending in the rail installation direction, and a recess 28 with
Presser plates 29a and 29b are arranged on both inner side edges and bolted.

Opposite sides of the presser plates 29a and 29b are sloped so as to leave an interval with a trapezoidal cross section at the center of the cross section of the four parts 28, and the interval between the trapezoidal cross sections, that is, the trapezoidal groove, A protrusion 31 that matches the groove shape formed on the lower surface of the flange portion 30 is fitted.

FIGS. 5(b) and 5(c) respectively show other modifications of the structure in which the movable frame member and the rail are attached, and as is clear from the figures, these modifications have the above-mentioned grooves and line grooves, respectively. The only difference is the shape of the protrusion that fits into the .

The operation of the pair of upper and lower holding frames 13a and 13b in the welding device 10 of the present invention as described above will be explained as follows.
Figures 1 and 2 are rare fish, and the lower holding device i in the standby position with an interval above and below! ! Press plate 12 of 111b
Ten upper and lower molded products 23a and 23b, which are constituent members of the pallet, are placed on top of each other on top a in an unwelded state. Next, the upper and lower retainers [11a, llb are brought closer by hydraulic piston devices 32a, 32b, respectively.
On the press plate 12a of the molded product 23a on the lower side of C1,
The molded product 23b on the − side is brought into close contact with the pressing plate 12b, and at that point, the companion frame portion 4A1 of each holding frame 13a, 13b
8 is moved by the hydraulic piston device a21 to press the C-name molded products 23a and 23b against the fixed frame parts 14a and 14b.

As a result, each molded product 23a, 23b has an external dimension that is not necessarily constant due to the 111/shrinkage error after molding.
Both the vertical and horizontal dimensions are corrected to the -J' method of 791 constant. FIG. 6 is a schematic view of this corrected state seen from one side of the molded product. For example, if the width of the upper molded product 23 b is pushed from within Jj of the arrow The other molded product 23a on the lower side is similarly pushed in the direction of the arrow and compressed by α2. As a result, the upper and lower molded products 23a.

23b is held in place and to the desired dimensions to ensure perfect alignment during subsequent welding of the two.

The amount of movement of the movable frame member is controlled by detecting the stroke of the hydraulic piston device f210 by an appropriate means based on the dimensions of the installed pallet to be formed.

As described above, according to the welding apparatus of the present invention, it is possible to properly hold and weld and weld molded products such as many types of pallets having different sizes using one welding apparatus. In addition, the conventional 4
Compared to a welding device using a fixed-side holding frame, there is no need to push the molded product into the holding frame, so there is no possibility of damage to the side walls of the molded product. As a result, synthetic resin molded products formed by welding and bonding, such as the bullet 14, can be produced extremely economically.

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of the welding device of the present invention.
FIG. 2 is a plan view showing one holding device in the welding device; FIG. 3 and FIG. 41 are plan views showing another embodiment of the holding device; 5(a) is a cross-sectional view showing the structure of the movable frame part and the rail taken along the line v(a)-v(o) in FIG. 4. , Fig. 5 (l]) F・Yobi (c) &j: +ifI
control possible 111 + frame rii + a] and 10... welding device,
lla, llb...holding device, 12a, 12b---
Pressing plate, 13... Holding frame, 14a. 14b-Fixed frame member, 1B, 18a, 18b... Movable frame member, 2], 27u, 27b... Hydraulic piston device, 23a, 23b... Molded product of upper and lower hand portions. 00 14Figure 2Figure 3

Claims (1)

[Claims] A pair of holding devices that are arranged vertically facing each other to accommodate, hold and weld the objects to be welded and welded, and that can be approached and separated from each other, and a pair of holding devices that move in and out of the gap when the respective holding devices are separated. A welding device comprising a heating plate which can be provided, wherein each holding device comprises a pressing plate and a holding frame provided on the opposing surface of the pressing plate, and each holding frame is provided with a heating plate. a fixed frame member disposed on the suppression plate that abuts two adjacent sides of the welded object to regulate movement of the welded object in order to position the welded object at a predetermined position on the suppression plate; a movable frame member movably disposed relative to the pressing plate to press the welded article against the fixed frame member from opposite sides of the two sides of the welded article to hold the welded article and correct its dimensions; and the movable frame. A welding device comprising a device for moving a member.