JP2012021584A - Mounting device for structural member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reinforce a structural member 1 with an insert 3, to reliably prevent the insert 3 from turning with a simple structure when the structural member 1 is mounted with a bolt, and to allow the insert 3 to be easily exchanged.SOLUTION: A first groove is formed in the structural member 1, and a second groove is formed in the insert 3. When the insert 3 is screwed into a screw hole 2, the second groove matches the first groove and the first groove is complemented by the second groove to form a pin hole 9. Further, a pin 10 is driven into the pin hole 9 and the insert 3 is prevented from turning by the pin 10. Then a bolt is screwed into the insert 3.

Description

  The present invention relates to a constituent member attaching apparatus for attaching constituent members by bolts.

  As described in Patent Document 1, in a bag making machine that manufactures plastic bags, a plastic film is heat sealed by a heat seal bar. Usually, the heat seal bar is made of aluminum and is soft. Therefore, when the heat seal bar is attached with the bolt, it is necessary to reinforce the heat seal bar with the insert. As described in Patent Documents 2 and 3, the insert is cylindrical and has an external thread and an internal thread. Therefore, the screw hole can be formed in the heat seal bar, the insert can be screwed into the screw hole, the bolt can be screwed into the insert, and the heat seal bar can be attached by the bolt.

  Incidentally, when the bolt is screwed into the insert, it is natural that the insert needs to be stopped by some means. Therefore, there is a demand for reliably preventing the insert from rotating with a simple structure.

  Furthermore, in the case of a heat seal bar, it is often removed once and reattached. Furthermore, when the bag making machine is in operation, the heat seal bar is heated to the heat seal temperature, and when the bag making machine is stopped, the heat seal bar is cooled to room temperature, and this is repeated alternately. For this reason, an insert receives a heat shock, and an insert may be damaged by a heat shock, and it is necessary to exchange this each time. Therefore, it is also desired that the insert can be easily replaced.

  In addition to the heat seal bar of the bag making machine, in other constituent members, the constituent members are reinforced by inserts, and the constituent members are often attached by bolts.

  Therefore, the present invention is to provide a simple structure that reliably prevents rotation of the insert and allows the insert to be easily replaced when the component is reinforced by the insert and the component is attached by a bolt. Objective.

JP 2001-310398 A Japanese Utility Model Publication No. 36-6915 JP 2002-130255 A

  According to this invention, the screw hole is formed in the component member, and the insert is screwed into the screw hole. The insert is cylindrical and has an external thread and an internal thread. Furthermore, a first groove is formed in the component at a predetermined angular position of the screw hole. The first groove has a circular arc cross section and extends in the length direction of the screw hole. Further, a second groove is formed in the insert. The second groove has an arc-shaped cross section and extends in the length direction of the insert. When the insert is screwed into the screw hole, the second groove is aligned with the first groove, and the first groove is complemented by the second groove to form a pin hole. Further, the pin is driven into the pin hole, the insert is prevented from rotating by the pin, and the bolt is screwed into the insert.

  In a preferred embodiment, the component is a heat seal bar of a bag making machine.

  Furthermore, pin holes are respectively formed at a plurality of angular positions of the screw holes, and the pins are driven.

  The pin is a hollow pin that is cylindrical and has a central hole.

  The pins are made of aluminum, brass, SPCC or heat resistant resin.

It is sectional drawing which shows the Example of this invention. A is a cross-sectional view of the heat seal bar of FIG. 1, and B is a plan view thereof. A is a side view of the insert of FIG. 1, and B is a plan view thereof. It is a perspective view of the pin of FIG. It is the photograph of the state which extracted the pin of FIG.

  Examples of the present invention will be described below.

  FIG. 1 shows an apparatus according to the present invention. This apparatus is a constituent member attaching apparatus for attaching a constituent member, and the constituent member is a heat seal bar 1 of a bag making machine. The heat seal bar 1 is made of aluminum and is soft. Then, the screw hole 2 is formed in the heat seal bar 1 and the insert 3 is screwed into the screw hole 2. As shown in FIG. 3, the insert 3 has a cylindrical shape and has an outer screw 4, an inner screw 5, and a minus groove 6. The insert 3 is made of brass.

  Further, as shown in FIG. 2, the first groove 7 is formed in the heat seal bar 1 at a predetermined angular position of the screw hole 2. The first groove 7 has an arc-shaped cross section, extends in the length direction of the screw hole 2 and opens on the inner peripheral surface thereof. Further, a second groove 8 is formed in the insert 3. The second groove 8 has a circular arc cross section, extends in the length direction of the insert 3 and opens to the outer peripheral surface thereof. When the insert 3 is screwed into the screw hole 2, the second groove 8 is aligned with the first groove 7, the first groove 7 is complemented by the second groove 8, and the pin hole 9 is formed. In this embodiment, four grooves are formed as the first grooves 7, and the grooves 7 are formed around the screw holes 2 at an angular interval of 90 °. Further, two grooves are formed as the second grooves 8, and each groove 8 is formed around the insert 3 with an angular interval of 180 °. Accordingly, each groove 8 is aligned with two grooves 7 in each groove 7, and pin holes 9 are formed at two angular positions of the screw hole 2, respectively.

  Further, the pin 10 is driven into the pin hole 9 and the insert 3 is prevented from rotating by the pin 10. In this embodiment, at two angular positions of the screw hole 2, the pin 10 is driven, and the insert 3 is prevented from rotating by the pin 10.

  As shown in FIG. 4, the pin 10 is a hollow pin, is cylindrical, and has a center hole 11. The pin 10 is made of aluminum, brass, SPCC or heat resistant resin. You may chamfer the peripheral edge of the one end or both ends of the pin 10.

  Therefore, it is possible to screw the bolt into the insert 3 and attach the heat seal bar 1 with the bolt. The insert 3 is made of brass, and even if a bolt is screwed into the insert 3, the insert 3 is not seized. It is also possible to remove the bolt from the insert 3 and thereby remove the heat seal bar 1.

  In the case of this device, it is only necessary to drive the pin 10 into the pin hole 9, and the insert 3 can be reliably prevented from rotating with a simple structure.

  Further, in order to replace the insert 3 when it is damaged, first, the pin 10 is removed from the pin hole 9. Thereafter, the driver is engaged with the negative groove 6, the insert 3 is rotated by the driver, and this is extracted from the screw hole 2. Then, a new insert 3 is used, which is screwed into the screw hole 2, the pin hole 9 is formed by the first and second grooves 7, 8, and the pin 10 is driven into the pin hole 9.

  Further, when the pin 10 is extracted from the pin hole 9, for example, in the center hole 11 of the pin 10, the drill is engaged with the pin 10, the pin 10 is punched by the drill, and the inner diameter is enlarged to reduce the wall thickness. And reduce the rigidity. Thereafter, the pin 10 may be pulled and extracted with a drill.

  The pin 10 is made of aluminum, brass, SPCC, or heat resistant resin, and is soft. Therefore, the pin 10 can be easily wound and cut out. Furthermore, the pin 10 is cylindrical. For this reason, when the drill is engaged with the pin 10 in the center hole 11 of the pin 10, the pin 10 is punched and punched by the drill, the inner diameter is uniformly expanded in the circumferential direction of the pin 10, and the wall thickness is reduced. , Rigidity can be reduced. Therefore, after that, when the pin 10 is pulled by a drill, the pin 10 is deformed thereby, and the pin 10 can be easily pulled out. The pin 10 can be actually pulled out as shown in the photograph of FIG. Even if it cannot be removed, after the rigidity is lowered, the pin 10 can be deformed with a pliers, pulled, and removed.

  When the insert 3 cannot be pulled out from the screw hole 2, the insert 3 can be rolled by a drill, its rigidity is lowered, deformed, and pulled out. Therefore, the insert 3 can be easily replaced.

  In the case of this apparatus, it is also easy to form the first groove 7 on the heat seal bar 1. For example, before forming the screw hole 2 in the heat seal bar 1, first, a round hole is formed with a drilling machine at the position of the first groove 7 of the heat seal bar 1. The round hole has the same diameter as the pin hole 9. Thereafter, a base hole is formed with a drilling machine at the position of the screw hole 2, and the base hole intersects with the round hole, thereby forming the first groove 7. Thereafter, the base hole may be formed by screwing the base hole with a screw tool.

  In this embodiment, the pin hole 9 is formed at each of the two angular positions of the screw hole 2 and the pin 10 is driven in, but at each of the three or more angular positions, the pin is formed. Hole 9 may be formed and pin 10 may be driven.

  This apparatus can be used not for the heat seal bar 1 of the bag making machine but for other constituent members, and the constituent members can be attached with bolts.

1 Heat Seal Bar 2 Screw Hole 3 Insert 4 Outer Screw 5 Inner Screw 7 First Groove 8 Second Groove 9 Pin Hole 10 Pin

Claims (5)

A component mounting apparatus for mounting a component by bolts,
A screw hole formed in the component member;
A cylindrical insert having an external thread and an internal thread and screwed into the threaded hole;
A first groove having a circular arc shape formed in the component member and extending in a length direction of the screw hole at a predetermined angular position of the screw hole;
A cross-sectional arc shape formed on the insert, extending in the length direction thereof, aligning with the first groove when the insert is screwed into the screw hole, complementing the first groove, and forming a pin hole. The second groove,
It consists of a pin that is driven into the pin hole and stops the insert.
The component member mounting apparatus, wherein the bolt is screwed into the insert.   The apparatus according to claim 1, wherein the constituent member is a heat seal bar of a bag making machine.   The apparatus according to claim 1, wherein the pin hole is formed at each of a plurality of angular positions of the screw hole, and the pin is driven.   The apparatus of claim 1, wherein the pin is a hollow pin, is cylindrical and has a central hole.   The apparatus of claim 1, wherein the pin is made of aluminum, brass, SPCC, or heat resistant resin.