JP3108897B2 - Welding and removing device for synthetic resin frames - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pair of synthetic resin shaped members constituting a synthetic resin frame such as a window frame, a fitting, or a picture frame used for construction, which are cut at 45 degrees. The present invention relates to a device for cutting and removing a welded tension generated at a welded portion in which is welded at a right angle.

[0002]

2. Description of the Related Art When manufacturing synthetic resin frames such as window frames, fittings, picture frames and the like, the ends of synthetic resin profiles are welded at right angles as follows. First, the end portion of the synthetic resin shaped material is cut at 45 degrees, the cut surfaces are butted together and welded in a molten state by a heating means. When welding is performed in this way, a welding tension occurs at the welding portion,
It is necessary to remove this welding tension.

[0003] As a device for removing the welding tension generated at the welded portion as described above, for example, a device disclosed in Japanese Patent Publication No. 3-8887 is known. In other words, while rotating the conical rotary blade having a vertical angle of about 76 degrees, the rotary shaft is inclined and moved along the welded portion to scrape off the welding tension.

[0004]

In such a device for removing the welding tension, since the cutting is performed by rotating the rotary blade, the surface accuracy of the cut surface is not very good, and there is a risk of shaving the surface of the shaped material. It is scraped off with a slight distance from the profile surface, and the welded tension after cutting slightly protrudes from the profile surface. For this reason, in the case of the above-mentioned scraping using the rotary blade, it is necessary for the operator to finish the work by hand after the scraping, and the work of removing the welded tension becomes troublesome. In particular, in order to remove the welding tension generated at the welded portion of the step-shaped surface of the profile 1 by the above-mentioned rotating blade, it is necessary to move the rotating shaft along the step-shaped surface, and the structure is very complicated and costly. Get higher.

Accordingly, an object of the present invention is to provide a synthetic resin frame welding and removing apparatus which can solve the above-mentioned problems.

[0006]

Means for Solving the Problems An end 1a of a synthetic resin profile 1 is cut at 45 degrees, and the ends of the synthetic resin frame 1 are welded at right angles. Device for removing along a vertical guide 242
A sliding member 250 and a link 254 connected to the first sliding member 250
And a second sliding body 253 which is integrally movable with the first sliding body 250 and is provided so as to approach / separate from / separate from the first sliding body 250, and is mounted upward on the second sliding body 253. An apparatus for welding and removing a synthetic resin frame, comprising a cutter and a stopper mechanism for regulating a stroke of the first sliding body 250 in two stages.

[0007]

[Operation] Since the second sliding body 253 can move to a position separated from the position in contact with the first sliding body 250, the cutter attached to the second sliding body 253 can move in the direction orthogonal to the sliding direction. Since the first sliding body 250 can move and stop at the first position and the second position along the vertical guide 242, the cutter can move and stop at the first position and the second position, and the cutter moves along a step-shaped locus. Therefore, the welded tension generated at the welded portion of the step-shaped surface of the profile can be properly cut and removed by one cutter.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, an upper cutting unit B is provided at an upper part of the fuselage A, a lower cutting unit C is provided at a lower part of the fuselage A, and a frame positioning part D is provided at an upper and lower middle part of the fuselage A. A frame moving mechanism E for positioning and moving the frame a to the frame positioning section D is provided above the body A.

[0009] The positioning unit D, as shown in FIG. 1 and FIGS. 2 and 3, the fuselage transverse plate 20 bunk roller pair of which is provided above and below the middle of the opened recessed section A ₁ on the front of the A 21 And a vertical plate 22 are attached to each other, and a holding plate 19 is provided on the vertical plate 22 so as to be movable up and down by a cylinder 18, and the left and right vertical plates 22 have a substantially V-shaped plane with a mutual angle of 90 degrees. As shown in FIG. 3, the corners b are in contact with the left and right vertical plates 22 so that the frame a is positioned on the fuselage A.

As shown in FIGS. 1 and 2, the frame moving mechanism E supports a mounting body 24 along a guide rail 23 provided on the front upper portion of the body A by a lateral feed cylinder 25 so as to be movable left and right. Vertical rod 2 fitted to a pair of cylindrical bodies 26 of the body 24
7 and a vertical cylinder 29 is mounted over the horizontal plate 28 and the mounting body 24, and the movable piece 31 is moved back and forth by a forward and backward feed cylinder 32 along a horizontal rod 30 provided on the horizontal plate 28. The roller 33 is attached to the movable piece 31 and freely supported.

Next, the operation of positioning the frame a on the body A will be described. The frame a is transported to the positioning unit D along a table (not shown) provided on the front side of the machine A. This frame a
Is carried out, for example, by an apparatus disclosed in Japanese Patent Publication No. 2-12692.

The transverse feed cylinder 25 is expanded and contracted to
Is moved along the guide rail 23 to position the roller 33 at the center of the positioning portion D, that is, at the virtual corner of the pair of vertical plates 22.

The upper and lower cylinders 29 are extended to move the horizontal plate 28 downward so that the rollers 33 face the frame a, and the forward and backward feed cylinders 32 are extended to move the rollers 33 toward the machine body A so that the corners of the frame a Then, the frame a is moved, and the frame a is pressed against the pair of vertical plates 22 to position the frame a to the body A as shown by the imaginary line in FIG.

Thereafter, the frame a is pressed against the horizontal plate 20 by the pressing plate 19 to position and hold the frame a, and the roller 33 is moved in the opposite direction to the above to separate from the frame a.

As shown in FIG. 4, the profile 1 constituting the frame a is a long material having a hollow cross-sectional shape surrounded by an upper surface 2, a vertical surface 3 on one side, a lower surface 4 and a vertical surface 5 on the other side. , The upper surface 2 is horizontal and the rising piece 15 is integrally provided,
Has a stepped shape with a vertical surface 3a and a horizontal surface 3b, and a lower surface 4
Has an inclined first lower surface 4a and a horizontal second lower surface 4b, and is provided integrally with a downward projecting portion 16; It has a surface 16a.

Thus, when the frame a is positioned, the other vertical surface 5 comes into contact with the stepped roller 21, the lower surface 10 b of the downward projection 10 is placed on the horizontal plate 20, and the corner b,
That is, the welded portion is located between the pair of horizontal plates 20.

Next, the details of the lower cutting unit C will be described. As shown in FIGS. 1 and 2, wherein the bottom front of the machine body A bracket 170 is mounted across between the left and right sides of the recessed portions A _1, the vertical guide tube 171 to the bracket 170
The first mounting body 173 is supported so as to be able to move up and down via a vertical rod 172, and the first mounting body 173 moves up and down when an elevating cylinder 174 provided on the bracket 170 is expanded and contracted.
A pair of horizontal rods 175 are attached to the first mounting member 173 in the front-rear direction.
6 is supported by a pair of front and rear cylinders 177 so as to be slidable back and forth. A third mounting body 178 is connected to the second mounting body 176, and the first, second, and third mounting bodies 178 are connected to the third mounting body 178. The cutting machines 179, 180, and 181 are attached, and the third cutting machine 181 is the welding and tension removing device of the present invention.

Next, the second mounting member 176 and the third mounting member 1
The connection structure 78 will be described. As shown in FIG. 5, a horizontal rod 182 is suspended between a pair of second mounting members 176, and a third mounting member 178 is slidably supported along the horizontal rod 182, and the third mounting member 178 is provided. The springs 183 are respectively provided between the left and right sides of the pair and the pair of second mounting bodies 176, the third mounting body 178 is located at the center between the pair of second mounting bodies 176, and the third mounting body 178 is
3 is compressed so that it can be slightly moved left and right.

Next, the details of the first cutting machine 179 will be described.
As shown in FIG. 6, a block 184 is mounted on the third mounting body 178, and a horizontal guide 186 is mounted on the block 184 via a bracket 185, and a sliding body 187 is moved forward and backward along the horizontal guide 186. The first cutter 1 is provided above and below the slider 187.
88 and a second cutter 189 are bolted, and the blade portions of the first and second cutters 188, 189 have a horizontal upper surface 188.
a, 189a and diagonal lower surfaces 188b, 189b, and the distance between the upper surface 188a of the first cutter 188 and the upper surface 189a of the second cutter 189 is lower than that of the second lower surface 4b of the profile 1. Lower surface 16 of facing portion 16
It is the same as the interval with b.

A block 190 is mounted on the lateral guide 186, and the block 190 has a semicircular hole 19 formed therein.
1 is formed, and the vertical guide portion 192 is attached downward, and the first cylinder 1
93 is mounted vertically, and the first cylinder 193
A chain 195 is connected to a movable body 194 that slides along the vertical guide portion 192, and the chain 195 is connected to the slide body 187 via a semicircular hole 191 of the block 190, and the first cylinder 193 is The expansion and contraction causes the sliding body 187 to slide in the front-rear direction along the lateral guide 186 via the chain 195. As shown in FIG. 7, a pair of left and right positioning pieces 196 are attached to the front portion of the horizontal guide 186, and front faces 196a of the pair of positioning pieces 196 are provided.
Is a 45-degree slope, so that the virtual intersection point intersects the extension of the center of the first and second cutters 188 and 189.

Next, the details of the third cutting machine 181 will be described.
As shown in FIG. 6, a flat U-shaped holding block 240 is attached to the block 184 to form a vertical opening 241. One vertical surface 241a of this vertical opening 241 is vertical and the other vertical surface 241b is vertical. And the vertical opening 2
The upper part of the vertical guide 242 faces inside 41. A support link 243 is connected to the vertical guide 242 with a pin,
The support link 243 is fitted into the linear portion 244a of the guide hole 244 of the block 184, and
The chain 245 is connected to a slider 247 fitted to a vertical guide 246 attached to the block 184, and attached to the vertical guide 246. Second cylinder 248
Is connected to the slider 247.

Therefore, when the movable portion 248a of the cylinder 248 is contracted and the chain 245 is pulled, the vertical guide 242 is pressed against the one side vertical surface 241a of the vertical opening 241 via the support link 243, and the vertical guide 242 is When the movable portion 248a of the cylinder 248 is extended and the chain 245 is pushed, the vertical guide 242 is pressed against the other vertical surface 241b of the vertical opening 241 via the support link 243 so that the vertical guide 242 is in the vertical position. An oblique posture having a certain angle is obtained.

FIGS. 8, 9, and 1 show the vertical guide 242.
As shown in FIG. 0, a first sliding body 250 is provided so as to be vertically slidable, and the first sliding body 250 is attached to a lower end of a vertical guide 242 via a bracket 251.
52, a second sliding body 253 is attached to the first sliding body 250 via a link 254,
The bracket 255 attached to the first slide 250
The four cylinders 256 are swingably mounted, and the movable part 256a of the second cylinder 256 is mounted on the second sliding body 253.
A fifth cutter 258 is attached to the second sliding body 253 of the motor.

Because of this, the fourth cylinder 256
When the movable portion 256a of the second sliding member 253 is extended and contracted,
Moves forward and backward while moving up and down with respect to the first sliding body 253 via the link 254, and the fifth cutter 258 moves back and forth while moving up and down. In the state shown in the figure, the movable portion 256a of the fourth cylinder 256 is extended to
3 shows a state in which 3 has been moved upward and rearward.

A T-shaped bracket 259 is bolted to the vertical guide 242.
The first and second ends of the lever 260, which is swingably supported at
Second stopper pins 261 and 262 are slidably supported in the front-rear direction, and the first and second stopper pins 261 and 26 are provided.
Reference numeral 2 denotes a direction in which the second stopper pin 262 is inserted into the first and second holes 263 and 264 of the vertical guide 242 and faces the recess 265 formed in the first sliding body 250, and the second stopper pin 262 is pulled out of the second hole 264 by the spring 266. , Whereby the first stopper pin 261 is pushed into the first hole 263 via the lever 260 to be urged, and the vertical surface 2 of the concave portion 265 is urged.
65a and the cam 267. The cam 267 is attached to the lower surface of the second sliding body 253 and located in the elongated hole 268 of the first sliding body 250. The second stopper pin 262 has a cutout 262a formed therein so that the cam 267 and the second The stopper pin 262 does not interfere.

As described above, when the second sliding member 253 is moved upward and rearward as shown in the drawing, the first stopper pin 261 is moved to the vertical surface 2 of the concave portion 265 of the first sliding member 250.
Contact with 65a and the cam 267, the stroke of the first sliding body 250 is restricted to S ₁ upward stepped portion 265b of the recess 265 is in contact with the first stopper pin 261 when sliding the first sliding body 250 upward . When the second slide 253 is moved downward and forward from this state, the cam 267 contacts the vertical guide 242 and pushes the first stopper pin 261, whereby the second stopper pin 262 is pushed via the lever 260. To protrude into the recess 265. Thereby, the concave portion 26 is formed.
5 does not interfere with the first stopper pin 261, so that the first sliding body 250 can be further slid upward, and when the sliding member is slid only by S ₂ , the upward step 265 _b of the concave portion 265 is formed.
Interferes with the second stopper pin 262 to regulate the stroke.

Next, a description will be given of the operation of scraping off the welding tension by the lower cutting unit B. After the frame a is positioned and held on the body A as described above, the elevating cylinder 174 is extended and the first attachment body 173 is raised to thereby position the positioning piece 179.
In the frame a so that the upper surface of the lateral guide 186 is brought into contact with the lower surface 4 of the adjacent profile member 1.
7 and the third mounting member 17 together with the second mounting member 176.
8 is moved to the body A side, and the front surfaces 179a of the pair of positioning pieces 179 are pressed against the one side vertical surface 3 of the adjacent profile 1.

As a result, the third mounting body 178 moves left and right with respect to the second mounting body 176 against the spring 183, and the third mounting body 178 is positioned in the front-back and left-right directions with respect to the frame a. At the same time, the third attachment body 178 is positioned vertically with respect to the frame a, and the first and second cutters 188, 188,
189 adjacent to the lower surface 4 corners of the profile 1 (welded portion)
And the fifth cutter 258 is positioned at the corner (welded portion) of the inner vertical surface 16a of the downward protrusion 16 of the adjacent profile 1. The third and fourth cutters 225 and 234 will be described later.

In this state, the first cylinder 193 is extended, the first cutter 188 is used to scrape off the welding tension generated at the welded portion of the second lower surface 4 b of the adjacent profile 1, and the second cutter 189 is used to remove the lower portion of the adjacent profile 1. The welding tension generated at the welding portion on the lower surface 16b of the facing portion 16 is scraped off.

In the above-described state, the second cylinder 248 is extended to set the vertical guide 242 of the third cutting machine 181 in an oblique posture having a certain angle with respect to the vertical posture as shown by a virtual line in FIG. To extend the first sliding body 250
Slide upwards. As a result, the fifth cutter 258 moves upward at a certain angle with respect to the vertical, and scrapes off the welded tension generated at the welded portion on the oblique inner surface 16a of the protrusion 16 of the adjacent profile 1.

Next, the welded portion generated at the welded portion of the step-shaped surface by the third cutting machine 181 is formed into a step-shaped surface by, for example, the upper vertical surface 3a and the lower vertical surface 3b in the shape 1 having the shape shown in FIG. The operation of cutting the welded tension generated at the welded portion of the one vertical surface 3 will be described. By contracting the second cylinder 248 to bring the vertical guide 242 into a vertical position, the fifth cutter 258
It was a vertical position, and when fully extended fourth cylinder 256, fourth and fifth cutter 258 extend the third cylinder 252 from this state after stroke upward by S ₁
Shortening the cylinder 256, further extending the third cylinder 252 to the fifth cutter 258 by S ₂ upward. As a result, the fifth cutter 258 moves stepwise as shown by the trajectory X in FIGS. 6 and 11, so that the welding tension generated at the welded portion on one vertical surface of the profile 1 that is the step-shaped surface is formed. It can be removed by cutting, and moves slightly downward when the fifth cutter 258 moves from the lower vertical surface 3b to the upper vertical surface 3a.
a from the step between the lower vertical surface 3b and the shape member is not damaged.

In the above embodiment, the vertical guide 242 of the third cutting machine 181 can be moved in a vertical position and in a position inclined with respect to the vertical position. This is for cutting the welded tension generated at the welded portion of the inner vertical surface 16a of FIG.
In the case of cutting only one side vertical surface 3 of the profile 1 shown in FIG. 5, the vertical guide 242 may be bolted to the block 184 so as to be in a vertical posture.

[0033]

The second sliding member 253 can be moved to a position separated from a position in contact with the first sliding member 250, and
The cutter attached to the sliding member 253 can move in the direction orthogonal to the sliding direction, and the first sliding member 250 can stop moving to the first position and the second position along the vertical guide 242. The movement can be stopped at the second position. Therefore,
Since the cutter moves along the locus of the stepped shape, the welded tension generated at the welded portion of the stepped surface of the profile can be correctly cut and removed by one cutter, and the first sliding body 250 and the second sliding body can be removed. Since the sliding member 251 is moved, the structure is simplified and the cost can be reduced. Further, when the second sliding body 253 is moved upward by the moving cylinder, it is separated from the first sliding body 250 and the first stopper pin 2
When the second sliding body 253 is moved downward by the moving cylinder, the first stopper pin 261 comes into contact with the first sliding body 250 and becomes the non-stop position by the cam 267, whereby the second stopper pin 262 is moved. Is the stop position, so that the second sliding body 2
By moving the 53 up and down, the stroke of the first sliding body 250 can be made into two stages, which facilitates the operation control, and the cutter moves to the first position and stops slightly after moving to the first position, and at right angles to the sliding direction. Therefore, when the cutter moves in the direction orthogonal to the sliding direction, the cutter is separated from the step on the step-shaped surface of the profile and does not damage the profile.

[Brief description of the drawings]

FIG. 1 is an overall side view showing an embodiment of the present invention.

FIG. 2 is an overall front view showing an embodiment of the present invention.

FIG. 3 is a schematic plan view of a frame positioning unit.

FIG. 4 is a perspective view of a synthetic resin frame.

FIG. 5 is a detailed vertical sectional view of a lower cutting unit.

FIG. 6 is a longitudinal sectional view of a lower cutting unit.

FIG. 7 is a plan view of FIG. 6;

FIG. 8 is an enlarged vertical sectional view of a third cutting machine portion.

FIG. 9 is a side view of FIG. 9;

FIG. 10 is an exploded perspective view.

FIG. 11 is a cross-sectional view of profiles having different shapes.

[Explanation of symbols]

A: Machine body, B: Upper cutting unit, C: Lower cutting unit, D: Frame positioning unit, E: Frame moving mechanism, 242: Vertical guide, 250: First sliding body, 253: Second sliding body, 25
4. Link, 256, fourth cylinder, 261, first stopper, 262, second stopper pin, 267, cam.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Satoshi Inoue 91, Kagimachi, Kamiichi-cho, Nakashinagawa-gun, Toyama Prefecture (72) Inventor Yutaka Sunaura 2-21, Okuda Hisashicho, Toyama City, Toyama Prefecture (56) References JP Akira 54-141855 (JP, A) JP-A-54-150479 (JP, A) JP-A-3-8887 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B26D 1/06 B29C 37/04

Claims (2)

(57) [Claims] 1. An apparatus for cutting an end 1a of a synthetic resin profile 1 at 45 degrees and removing a welded tension generated at a welded portion of a synthetic resin frame a in which the ends are welded and connected at right angles. A first sliding body 250 that slides along the vertical guide 242;
The first sliding body 250 is connected to the first sliding body 250 through a link 254.
To move integrally with the first sliding body 250,
Second sliding body 2 provided to be movable toward and away from moving body 250
53, a cutter attached upward to the second sliding body 253, and a stopper mechanism for regulating the stroke of the first sliding body 250 in two stages. apparatus. 2. A vertical slide 242 is provided with a first sliding body 25.
0 is provided, and the first sliding body 25
0, a cylinder for vertically moving the second sliding body 253 is provided.
In addition , the first stopper pin 261 and the second stopper pin 262 are vertically separated from the vertical guide 242 and are moved to a stop position where the first stopper pin 261 and the second stopper pin 262 interfere with each other and a non-stop position which is separated from the second slide member 250. The first stopper pin 261 is urged and held at a stopper position, and
The stopper pin 261 and the second stopper pin 262 are linked so as to alternately move to a stop position and a non-stop position, and the second slide member 253 contacts the first slide member 250 when the second slide member 253 contacts the first slide member 250. 2. The apparatus according to claim 1, wherein a cam 267 for moving one stopper pin 261 to a non-stop position is provided as a stopper mechanism.