GB2133760A - A reversing device for elongated section members - Google Patents

Abstract

A reversing device for section members which comprises: a rotation shaft 21 horizontally supported on a fixed support 38; a pair of arm members 25, 26 spaced apart along said shaft 21 facing each other and fixed to said shaft 21 at one end of each of said arm members 25, 26 so as to form a three sided rectangle composed of both of said arm members 25, 26 and said shaft 21; at least one pair of pressing devices 35 located on said pair of arm members 25, 26 at positions facing each other for releasably holding elongated section members therebetween; and a means 22 to rotate said rotation shaft 21 for rotating said pair of arm members 25, 26 through an angle of 180 degrees from a first horizontal position to a second horizontal position and in the opposite direction in turn. The device according to the invention enables elongates section members to be turned upside-down accurately and efficiently without manual operation. <IMAGE>

Description

second carriage 10 longitudinally of the apparatus ontoacutterdevice 16 bytwocylinders 13,14 and central portions ofthe bottoms ofthe grooves 5,5' are cut away by the cutter device 16 see Fig. .

Thereafter, the sash bars 1 are transferred longitudinally of the apparatus by driving rollers not shown to a reversing device 17 which holds and turns the sash bars 1 upside-down to face the lower grooves 5' of the sash bars upward. The reversed bars arethen pushed out ofthe device 17 longitudinally of the apparatus by two cylinders 18, 19 and by driving rollers 30to be again placed onto the first carriage 2 where the now upwardly facing grooves 5' ofthe bars 1 are succes- sively lined with the heat insulating sheet 15 and fitted with the end caps 6 and thereafterfilled with the heat insulating synthetic resin 12 at the injecting zone in the same manner as the processing ofthe grooves 5.The sash bars 1 with the heat insulating synthetic resin filled in the grooves 5' are then transferred onto the second carriage 10 and are removed from the downstream end ofthe second carriage by a removing means not shown.

Figs. 2 shows the sash bars 1 in the cross-section in the successive processing steps in the order mentioned hereinabove. The sash bar 1 has the crosssectional configuration as shown in Fig. 2(a) when extruded. In the processing, initially, the sheet 15 is placed onto the bottom of the upper groove 5 ofthe sash bar 1 as shown in Fig. 2(b), then the opposite ends of the upper grooveS are closed by end caps 6 and the sheet 15 is held in position by nipping it between the portion ofthe cap and the bottom of the groove 5 as shown in Fig. 2(c), the solution of heat insulating synthetic resin 9 is injected into the upper groove 5 by the injection device 8 as shown in Fig. 2(d), the central portions of the bottoms of the upper and lower grooves 5,5' are cut away by the cutter device 16 as shown in Fig. 2(e), the sash bar 1 is turned upside-down to reverse the position ofthe upper and lower grooves 5,5' as shown in Fig. 2(f), the sheet 15 is placed onto the bottom ofthe now upwardly facing groove 5' as shown in Fig. 2(g), the opposite ends of the now upwardly facing groove 5' are closed by end caps 6 and the sheet 15 is held in position within the groove 5' as shown in Fig. 2(h) and the solution of heat insulating synthetic resin 9 is injected into the groove 5' by the injecting device 8 as shown in Fig. 2(i).

Fig. 3 shows a perspective view ofthe reversing device comprising: a rotation shaft 21 horizontally supported on afixed support38; a pairofarm members 25,26 spaced apartalong the shaft21 facing each other and fixed to the shaft 21 at an end of each arm member25,26 so as to form a three-sided rectangle composed of both ofthe arm members 25, 26 and the shaft 21; pairs of press-plates 35 facing each other and fixed to piston rods of cylinders 27,28 which are located horizontally on the pair of arm members 25,26, respectively; and a pinion 24 fixed to the rotation shaft 21, and a cylinder 22, the piston rod ofwhich has a rack 23 engaging with the pinion 24 thereon.

In Fig. 3, the rotation shaft 21 is rotated through an angle of 180 degrees by vertically reciprocating cylinder 22 through the rack 23 and pinion 24 engagement. The piston rod of each cylinder 27,28 located on each arm member 25,26 extends through each arm member and is provided with the press-plate 35 at the end of each piston rod.

Although not shown in the drawing, each cylinder 22,27,28 is operated automatically and in a mutually related manner so that sash bars can be turned upside-down as the sash bars are supplied into the device as explained below.

In Fig. 3., 29,30 are driving rollers and 31,32,33,34 are guide rollers. The driving rollers 29 introduce sash bars transferred from the cutter device 16 into the reversing device with the help of guide rollers 31,32.

The sash bars introduced into the reversing device are stopped at appropriate positions explained below by brake means (not shown) operated by limit switches (not shown).

The driving rollers 30 transfer reversed sash barsto the next station with the help of guide rollers 33,34 The top portion of driving rollers 29,30 and guide rollers 34 is cut into a conical shape so as not to interfere with the reversing movement ofthe sash bars.

The operation of the reversing device is explained hereinafter. The piston rod of the cylinder 22 is retracted moving the rack 23 downward, which rotates the shaft 21 counter-clockwisethrough an angle of 180 degrees moving arm members 25, 26to a leftward position from their original position in Fig. 3.

Sash bars 1 transferred from the cutter device 16 are introduced into the reversing device by driving rollers 29 and guide rollers 31,32 and are stopped by brake means mentioned above at locations suitable for being held between the arm members. Then the piston rod ofthe cylinder 22 is extended moving rack 23 upwards, which rotates arm members 25,26 clockwise through an angle of 180 degrees to their original position, where the arm members are stopped to hold sash bars 1 longitudinally at both of their ends. As is apparent from Fig. 4,the upper grooves 5 ofthe sash bars have been filled with heat insulating synthetic resin 12. Piston rods of cylinders 27,28 are extended to hold sash bars 1 longitudinally between the press-plates 35.The piston rod ofthe cylinder 22 is then retracted moving the rack 23 downward, which rotates the arm members 25,26 counter-clockwise through an angle of 180 degrees with the sash bars being held by the arm members. Next, the piston rods ofthe cylinders 27,28 are retracted to set free the sash bars, and leave them on guide rollers 33. The piston rod ofthe cylinder 22 is extended again moving the rack 23 upward, which rotates the arm members clockwise. Then, the driving rollers 30 are rotatedto move the sash bars to the next station, namely, onto the first carriage 2. At this time, as is shown by the phantom line in Fig. 4, heat insulating synthetic resin 12 is located atthe bottom ofthe sash bar 1 with the groove 5' located atthetop.

Fig. 5 shows another embodiment of the invention, which is suitable for reversing relatively long sash bars. Arm members 25,26 are connected with each other by reinforcing members 36. Cylinders 37 are provided on the reinforcing members so that each sash bar held by the cylinders 27,28 in the longitudinal direction are additionally held by a pair of cylinders 37 in the lateral direction, which allows the sash bars to SPECIFICTION A reversing device for elongated section members The present invention relates to a reversing device forsection members and more specificallyto such a deviceforturning section members upside-down that is used,for example, in the manufacturing process of heat insulating sash bars wherein reversing of sash bars is needed to fill grooves on both upper and lower sides of each sash bar with heat insulating material.

It is a known practice to form a heat insulating sash bar with an extruded hollow metal section member having grooves therein which are filled with heat insulating synthetic resin.

In this case, generally the grooves are provided on both sides ofthe section member, and after a groove on one side is first filled with heat insulating synthetic resin, the section member is reversed orturned upside-down, and the groove on the other side is then filled with heat insulating synthetic resin.

In the prior art method, however, the reversing of the section members has been carried out manually and, therefore, production efficencywas low.

It is believed possible by means of the present invention to provide a device for reversing section members automatically instead of manually, thus allowing an improvement in efficiency.

According to the invention there is provided a reversing device for section members comprising: a rotation shaft horizontally supported on afixed support; a pair of arm members spaced apart along said shaftfacing each other and fixed to said shaft at one of each of said arm members so as to form a three sided rectangle composed of both of said arm members and said shaft; pairs of pressing devices located on said pair of arm members at positions facing each other for releasably holding elongated section memberstherebetwwen; and a means to rotate said rotation shaft for rotating said pair of arm members through an angle of 180 degrees from a first horizontal position to a second horizontal position and in the opposite direction in turn.

A preferred embodiment of a reversing device for section members in accordance with the present invention brings aboutthefollowing effects: (1) Section members are reversed accurately without manual operation by rotating a pair of arm members automatically through an angle of 180 degrees around a rotation shaft after the section members are held automatically between the pair of arm members.

(2) Since the pair of arm members are rotated through an angle of 180 degrees around a rotation shaft at one end of each arm member, the pair of arm member can rotate back to their original position without interfering with other section members sup- plied into the reversing device during the reversing operation, which allows the time required to reverse section members to be shortened, thus improving efficiency.

The present invention will be described byway of example with reference to the accompanying drawings which show one preferred embodiment ofthe invention for illustration purposes only and not for limiting the scope of same in anyway. In the drawings:- Fig. is a perspective view of the entire structure of an apparatusforfilling heat insulating material into grooves on both sides of elongated section members, the preferred embodiment of a reversing device for section members in accordance with the invention being included in the apparatus; Fig. 2 is a view showing the various steps of the process to be conducted bythe apparatus of Fig. 1;; Fig. 3 is a perspective view ofthe preferred embodiment of a reversing device for section members in accordance with invention; Fig. 4 is a sectional view corresponding to section A-A in Fig. 3, showing thefunction of the reversing device of Fig.3; and Fig. 5 is a perspective view of another embodiment ofthe present invention including additional pairs of pressing devices for holding elongated section members.

Fig. is a perspective view of the entire structure of the apparatus for continuously producing sash bars incorporating the preferred embodiment ofthe invention. A plurality of extruded hollow sash bars 1 are placed on afirstcarriage 2 one by one ata predetermined time interval by a supplying means not shown.Thefirstcarriage 2 includes a movable stand 2b which is moved up and down by a cylinder 2a and is reciprocated transversely ofthe apparatus by a cylinder3 and a fixed stand 2c. When the piston rod of the cylinder 2a is extended,the sash bars 1 on the fixed stand 2c are engaged by spacers of the movable stand 2b and are positioned at an equal pitch. Under this condition, when the piston rod ofthe cylinder 3 is retracted,the sash bars 1 are moved transversely by one pitch together with the movable stand.When the piston rod ofthe cylinder 2a is retracted, the sash bars 1 are out of the spacers ofthe movable stand and are placed on the fixed stand 2c. With such condition, when the piston rod ofthe cylinder 3 is extended, the movable stand 2b is returnedtransverselyto its original position for receiving a newly supplied sash bar.

While the sash bars 1 are being moved intermittently on the carriage 2, a heat insulating sheet 15 is inserted into the groove 5 in each ofthe successive bars 1 by supply rollers 20 and then the opposite ends ofthe groove 5 are closed by end caps 6 by a cap attaching device 4. The sash bars 1 with the grooves 5 closed by the end caps are successively pushed out of the carriage 2 longitudinally ofthe apparatus by a cylinder7 and passed below an injection device 8 which injects a solution of heat insulating synthetic resin into the grooves 5 in the sash bars 1 one by one.

The sash bars 1 with the heat insulating synthetic resin 9 filled in the grooves 5 are then transferred by feed rollers 38 onto a second carriage 10 which is similarto the first carriage 2 and are moved intermittently one pitch by one pitch on the carriage 10 by a movable stand lOb, a fixed stand 1 Oc and cylinders 10a, 11 while allowing the resin solution 9to solidify during such movementto form a heat insulating synthetic resin body 12.

Thereafter, each two of the thus processed bars 1 are at onetime simultaneously pushed out of the be held more securely.

Reference is directed to co-pending application No.

83 (ref. 230P46743) since the inventions may be used together.

Claims (6)

1. A reversing device for section members comprising: a rotation shaft horizontally supported on a fixed support; a pair of arm members spaced apart along said shaft facing each other and fixed to said shaft at one end of each of said arm members so as to form athreesided rectangle composed of both of said arm members and said shaft; at least one pair of pressing devices located on said pair of arm members at positions facing each other for releasably holding elongated section members therebetween; and a means to rotate said rotation shaft for rotating said pair of arm members through an angle of 180 degrees from a first horizontal position to a second horizontal position and in the opposite direction in turn.

2. A reversing deviceforsection members according to Claim 1 ,wherein each of said pressing devices is a pressing plate fixed to a piston rod of an extending and retracting cylinder supported on said arm member.

3. A reversing device for section members according to Claim 1 or 2 wherein said means to rotate said rotation shaft comprises a pinion fixed to said rotation shaft and a cylinder, the piston rod ofwhich has a rack engaging with said pinion thereon.

4. A reversing device for section members according to Claim 1,2 or3 wherein said pair of arm members are connected members include at least an additional pair of pressing devices at positions facing each otherfor releasably holding additionally in the lateral direction each of said elongated section memberswhich are releasably held in the longitudinal direction bysaid pair of pressing devices.

5. A reversing device for section members according to Claim 4wherein each of said additional pressing devices is a pressing plate fixed to a piston rod of an extending and retracting cylinder supported on said reinforcing member.

6. A reversing device for section members according to any one of the preceding claims, wherein said section members are heat insulating sash bars.