JP3172639U - Tube end diameter expansion / ring insertion device - Google Patents

Abstract

A tube end diameter increasing / ring inserting device capable of expanding the diameter / ring insertion of a tube end with a small force and in multiple stages.
A tube end diameter expansion or ring insertion attachment 2 is attached to the tip of a shaft 4 of a rack 2 slidable in a casing 1, and a tube end fixing holding means 23 is provided in front of the attachment. When the pinion gear 17 meshes with the rack teeth of the rack 2, one end of the handle 16 is rotatably held around the gear pin, the latch 19 is attached around the latch pin 18, and the handle 16 is rotated in the gripping direction. The pinion gear 17 advances the rack 2 forward. Rack urging means for urging the rack rearward inside the casing, rack rearward movement preventing means, engagement of the rack rearward movement preventing teeth, rack rearward movement preventing means, and rack rearward movement preventing means, and a pinion gear and a latch And the rack is moved to the rear position by the rack releasing means.
[Selection] Figure 4

Description

  The present invention relates to a tube end diameter expansion / ring insertion device for expanding diameter / ring insertion with respect to an end portion of a chemical resistant tube used in a pipe joint used for transferring a chemical solution or the like.

  When transferring chemicals in a semiconductor cleaning device, the inlet and outlet are connected with chemical-resistant tube joints made of fluororesin such as polytetrafluoroethylene, etc., but each end of the pipe inlet and pipe outlet is connected via a tube joint. In order to connect the tubes, it is necessary to expand the diameter of the tube end or insert a ring into the tube end. Since the chemical resistant tube is made of hard plastic such as the above-mentioned fluororesin, it is often difficult to connect the tube to the tube joint as it is.

Therefore, conventionally, for example, a tube end diameter increasing / ring inserting device shown in a sectional view in FIG. 12 is used. This device is slidably housed in a gripping body 101 of "<" and a cylindrical part of the gripping body, and has a tube end diameter expansion attachment or tube end ring insertion attachment (not shown) at the tip. A shaft 102 to be attached, a lever 104 that can be rotated around the support pin 103 and an upper end portion of which can be brought into contact with a rear end portion of the shaft portion 102, and a tube fixing integrally attached to the front of the gripping body. Means 105.

The tube fixing means 105 of the tube end diameter expansion / ring insertion device is fixed and held in the vicinity of the tube end, and the tube diameter expansion and the small diameter portion of the ring insertion attachment are attached to the tube end opening. In this state, hold the grip portion of the grip body 101 with one hand and hold the lever 104 with the other hand, or hold the grip portion and the lever 104 with one hand, and pull the lever 104 toward the grip portion. Thus, the shaft 102 is pushed forward by the lever principle, and the tube end is expanded / ring-inserted by the attachment of the shaft end.

However, since only the lever principle is used in this prior art, a relatively large force is required to expand / insert the tube end, and the shaft is retracted after expanding the tube end / inserting the ring. Then, the lever 104 was opened and the end of the tube was manually pulled away from the attachment.

JP-A-11-179453 Utility model registration No. 3090779

In the present invention, the tube end can be expanded / inserted with a small force, the tube end can be expanded / inserted in multiple stages, and the tube end expanded / ringed. It is an object of the present invention to provide a tube end diameter expansion / ring insertion device that does not require manual pulling of the lever away from the gripping portion in order to retract the shaft after insertion.

(1) The tube end diameter expansion / ring insertion device according to the present invention is
1. A casing extending in the longitudinal direction;
2. A rack having rack teeth that are slidably accommodated within a certain range in the longitudinal direction inside the casing and extend forward and backward on one side surface;
3. A shaft whose rear end is attached to the front end of the rack and accommodated inside the casing, and when the rack is moved forward in the longitudinal direction inside the casing, the front end moves to the outside of the casing;
4). A tube end fixing and holding means which is integrally disposed in front of the casing via a beam and holds the vicinity of the end of the tube concentrically with the shaft;
5). A pinion gear that meshes with the rack teeth on the side surface of the rack, is held in the casing so as to be rotatable around the gear pins, and moves forward in the longitudinal direction inside the casing by being rotated forward.
6). A handle having one end rotatably held around the gear pin and extending from the one end to the other end;
7). A latch that is swingably mounted around a latch pin attached to the handle and is urged in the gripping direction of the handle to engage the latch teeth with the pinion gear. When the handle is rotated in the gripping direction, the pinion gear is A latch that rotates in a direction to advance in the rack;
8). Rack urging means for urging the rack in a direction returning to the rear inside the casing;
9. A rack rearward movement preventing means that engages with a rack rearward movement preventing tooth provided on the other side surface of the rack and prevents the rack from returning backward in the casing;
10. And a rack releasing means for releasing the engagement between the rack and the rack rearward movement preventing means and the pinion gear and the latch and moving the rack to a rearward position by the rack urging means.

(2) The tube end diameter expansion / ring insertion device according to the present invention further includes a return dial directly connected to the pinion gear, and the pinion gear is forcibly rotated by rotating the return dial to move the rack to the rear position. It is possible to move to.
(3) Further, the present invention is the above-mentioned (1) or (2), the tube end diameter increasing / ring insertion device, the tube end diameter increasing attachment detachably attached to the front end of the shaft, and the tube end. The present invention relates to a tube end diameter expansion / ring insertion device that comprises a tube end diameter attachment and a tube end diameter expansion attachment and a tube end ring insertion attachment that are selectively detachably attached to a front end portion of a shaft.

  Since the tube end diameter increasing / ring inserting device according to the present invention is configured as described above, the tube end diameter increasing attachment or the tube end ring inserting attachment is attached to the front end of the shaft, and the tube end The tube end can be expanded / inserted with a small force by a simple pinion / rack / latch mechanism with the vicinity of the portion held by the tube end fixing and holding means. Further, since the rack is prevented from returning backward in the casing by the rack rearward movement preventing means, the diameter of the end of the tube / ring insertion can be performed in multiple stages. Furthermore, the rack releasing means can release the engagement between the rack and the rack rearward movement preventing means and the pinion gear and the latch, and the rack biasing means can move the rack to the rear position. There is no need to manually pull the handle away from the gripper in order to move it to the rear position.

  Further, if the rack cannot be moved to the rear position by the rack biasing means even if the engagement between the rack and the rack rearward movement prevention means and the engagement between the pinion gear and the latch are released, the pinion gear By rotating a return dial directly connected to the shaft, the pinion gear can be forcibly rotated so that the rack can be moved to the rear position.

1 is an external perspective view of a tube end diameter expansion / ring insertion device according to an embodiment of the present invention. It is a top view of the tube end part diameter expansion / ring insertion apparatus which concerns on one embodiment of this invention which attached the attachment for tube end part diameter expansion. It is a front view of the tube end part diameter expansion / ring insertion apparatus which concerns on one embodiment of this invention which attached the attachment for tube end part diameter expansion. It is sectional drawing of the tube end part diameter expansion / ring insertion apparatus which concerns on one embodiment of this invention which attached the attachment for tube end part diameter expansion cut | disconnected along the IV-IV line of FIG. FIG. 5 is a plan view of a tube end fixing and holding means that is integrally disposed in front of the casing via a beam and holds the vicinity of the end of the tube concentrically with the shaft. It is sectional drawing of the tube end diameter expansion / ring insertion apparatus which concerns on one embodiment of this invention which attached | attached the front-end | tip part of the tube end diameter expansion attachment to the opening part of the tube end. Furthermore, it is sectional drawing of the tube end diameter expansion / ring insertion apparatus which concerns on one embodiment of this invention which pushed the diameter expansion part of the attachment for tube end diameter expansion into the opening part of the tube end part, and expanded the tube end part. is there. It is sectional drawing of the tube end part diameter expansion / ring insertion apparatus which concerns on one embodiment of this invention which made the diameter expansion part of the tube end part diameter expansion attachment remove | desorb from the diameter expansion opening part of a tube end part. (A) is a tube end diameter expansion / ring insertion device according to the present invention showing a state in which the tube end ring insertion attachment is attached to the front end portion of the shaft of the tube end diameter expansion / ring insertion device according to the present invention. It is a partial cross-sectional view, (b) is a cross-sectional view that also displays a ring to be inserted into the tube end portion, (c) is a state in which the ring is inserted into the tube end ring insertion attachment of (a) FIG. (A) is sectional drawing which inserted the front-end | tip part of the attachment for tube end ring insertion in the tube end part, (b) is the process of pushing in the attachment for tube end ring insertion until a ring is inserted in a tube end part (C) is sectional drawing which shows the process and the ring insertion tube which leave | attach a ring at the tube edge part, and remove | desorb an attachment. (A) shows the process of mounting | wearing a tube expanded diameter end part with a coupling, (b) shows the process of mounting | wearing a ring mounting tube with a coupling. It is a front view of the apparatus for tube end diameter expansion / ring insertion concerning a prior art.

  A tube end diameter increasing / ring inserting device and a tube end diameter increasing / ring inserting device according to the present invention will be described in detail with reference to FIGS. The present invention is not limited to the specific embodiments shown in the drawings, and various modifications and changes can be made without departing from the spirit of the present invention. In the present application, the tube end diameter expansion / ring insertion device means a tube end diameter expansion attachment tube or an end ring insertion attachment, and a tube end diameter expansion / ring insertion device. Means a state in which an attachment tube for expanding a tube end or an attachment for inserting an end ring is attached.

    FIG. 1 is an external perspective view of a tube end diameter increasing / ring insertion device according to an embodiment of the present invention, and FIG. 2 is an embodiment of the present invention to which a tube end diameter increasing attachment is attached. FIG. 3 is a plan view of the tube end diameter increasing / ring inserting device, and FIG. 3 is a front view of the tube end diameter increasing / ring inserting device according to one embodiment of the present invention shown in FIG. In the figure, 1 is a casing, 10 is a release lever, 16 is a latch handle, 22 is a beam, 23 is a tube end fixing and holding means, 25 is an attachment for expanding the tube end, and 26 is a circular return dial. .

    FIG. 4 is a cross-sectional view of the tube end diameter increasing / ring insertion device according to an embodiment of the present invention, cut along line IV-IV in FIG. In the figure, a rack housing space A is provided in the inner central portion of the casing 1, and a shaft housing space B that is continuous with the rack housing space A and opens to the outside at the front end portion is provided. The rack 2 is accommodated in a rack accommodating space A, and rack pins 3 fixed to the casing 1 are mounted in sliding grooves C provided in the rack 2. The rear end portion of the shaft 4 is attached to the front end of the rack 2 by a pin, and the shaft 4 is led out from the shaft housing space B to the outside.

  A stopper space D communicating with the rack housing space A through a communication hole is provided in the rear part inside the casing, and a front end is connected to the rear end of the rack 2 through the communication hole in the stopper space D. A stopper shaft 7 whose part is attached to the stopper 6 is arranged. A compression spring 8 is interposed between the stopper space D and the stopper 6 around the stopper shaft 7 in the stopper space D, and the rack 2 is always urged rearward by the compression spring 8. The rear end portion of the rack accommodating space A is a reduced diameter portion, and the rack rear end portion is accommodated therein.

  A rack stop tooth portion (stopper tooth) 9 is provided on the upper surface of the rack 2, and a release lever space E partially connected to the outside is provided above the rack, and one end of the release lever 10 is located outside. In addition, the other end portion extends to the inside of the release lever space E, and the other end has a stopper tooth engagement protrusion 11 that engages with the stopper tooth. The release lever 10 is supported by a release lever pin 12 so as to be swingable. The upper surface of the other end of the release lever is always urged downward by a compression spring 13, and the stopper tooth engagement protrusion 11 is always engaged with the stopper tooth. Yes. The stopper teeth correspond to rack rearward movement prevention teeth provided on the other side surface of the rack, and the rack rearward movement prevention means for preventing the rearward movement of the inside of the casing is the release lever 10, the release lever pin 12, the compression spring 13, and the stopper tooth engagement. This corresponds to a mechanism constituted by the protrusions 11.

  A rack advancement tooth portion 14 is provided on the lower surface of the rack 2, a lower portion of the rack accommodating space is opened to the outside, and one end portion of a latch handle 16 and a pinion gear 17 are connected to a pinion gear pin 15 fixed to the casing 1. The pinion gear 17 is meshed with the rack advancement tooth portion 14. A latch 19 is pivotally supported on the latch handle 16 by a latch pin 18, and a lower surface of the rear end portion of the latch is constantly urged upward by a compression latch spring 20 fixed to the latch handle 16, and a latch tooth at the rear end portion of the latch 19 is pinion It meshes with the gear 17. A compression spring 21 is interposed between the casing 1 and the handle 16, and biases the latch handle 16 in a direction that always opens with respect to the casing 1. Further, a latch release block (not shown) is provided, and the engagement between the pinion gear 17 and the latch teeth at the rear end of the latch 19 is released, so that the latch handle moves freely.

A tube end fixing and holding means 23 is installed in front of the casing 1 via a beam 22 so that the vicinity of the tube end is fixed and held concentrically with the shaft 4 so as to be detachable. A concentric threaded recess 24 is provided at the tip of the shaft 4, and a tube end diameter increasing attachment 25 is attached in the first embodiment. The tube end diameter expansion attachment 25 includes an attachment fixing screw portion 25a, a base portion 25b, a large diameter portion 25c, an enlarged diameter portion 25d, and a small diameter portion 25e having a diameter substantially equal to the tube inner diameter, and the attachment fixing screw portion. 25a is screwed into the threaded recess 24. The enlarged diameter portion 25d extends between the large diameter portion 25c and the small diameter portion 25e and has a tapered cross section. The tube end ring insertion attachment will be described later with reference to FIG.

  The tube end fixing and holding means 23 shown in FIG. 5 is fixed to be openable and closable with the upper holding member 23a and the lower holding member 23b opened and closed at one end, and the upper holding member 23a and the lower holding member 23b being closed. And a mounting portion 23d attached to the beam 22. The mounting portion 23d is attached to the tip of the beam 22 so as to be detachably fixed to the beam 22.

  6 to 8 show a process of expanding the diameter of the tube end portion using the tube end diameter expansion / ring insertion device according to the present invention to which the tube end diameter expansion attachment 25 is attached. As shown in FIG. 6, first, with the small diameter portion 25e of the tube end diameter increasing attachment 25 inserted into the opening of the end portion of the tube T, the vicinity of the tube end portion is detached from the tube end portion fixing holding means 23. It is freely fixed and held concentrically with the shaft 4. The upper right figure of FIG. 6 shows the tube T whose diameter is enlarged.

Next, when the latch handle 16 is pulled toward the rear portion of the casing 1 against the compressive force of the compression latch spring 20 by grasping the rear portion and the handle of the casing 1 by hand, the pinion gear 17 rotates and the rack 2, The shaft 4 and the tube end diameter expansion attachment 25 are moved forward against the compressive force of the compression spring 8, and the diameter expanded portion 25d and the large diameter portion 25c of the attachment 25 are pushed into the opening at the tube end. Thereby, the diameter of the tube end is increased. See FIG. When the tube end diameter expansion attachment 25 is advanced forward against the compression force of the compression spring 8, it may be performed in a single forward operation, or a plurality of forward operations may be performed in multiple stages. .

When the release lever 10 is pushed down against the compression force of the compression spring 13 after expanding the tube end, the engagement between the stopper teeth of the rack 2 and the stopper tooth engagement protrusion 11 is released, and the rack urging means is used to remove the rack. Is moved to the rear position, and the latch handle 16 is rotated in the direction opposite to the gripping direction. See FIG. As a result, the tube end diameter increasing attachment 25 is disengaged from the end portion of the tube T, and a tube having an end portion whose diameter is enlarged / inserted into a ring is obtained. See the lower right figure in FIG.

  If the tube has a large diameter, the end of the tube is expanded, and then the release lever 10 is pushed down against the compression force of the compression spring 13 to release the engagement between the stopper teeth of the rack 2 and the stopper teeth engagement protrusion 11. The attachment 25 may not come off from the end of the tube T. In that case, the release lever 10 is pushed down against the compression force of the compression spring 13, and the return dial 26 directly connected to the shaft of the pinion gear 17 is rotated in the reverse direction to rotate the rack 2 and the shaft 4 through the pinion gear 17. , And the attachment 25 is detached from the end of the tube T. It should be noted that several types of tube end diameter expansion / ring insertion attachments can be prepared and changed depending on the diameter of the target tube.

  Next, in FIG. 9A, a tube end diameter expansion / ring insertion device to which the tube end ring insertion attachment 27 is attached is illustrated. The tube end ring insertion attachment 27 shown in the upper part of FIG. 9 (a) includes an attachment fixing screw portion 27a, a base portion 27b, a large diameter portion 27c, and a small diameter portion 27d having a diameter substantially equal to the tube inner diameter. The attachment fixing screw portion 27 a is screwed into the screw-in recess 24 of the shaft 4.

  FIG. 9B illustrates the tube end diameter expansion / ring insertion device to which the tube end ring insertion attachment 27 is attached and the ring 28 to be inserted into the tube end. The inner diameter of the ring 28 is such that it can be pushed into the small diameter portion 27d of the tube end ring insertion attachment 27, and the outer diameter is slightly larger than the inner diameter of the tube end portion. FIG. 9C shows a state in which the ring 28 has been pushed into the small diameter portion 27 d of the tube end ring insertion attachment 27.

FIG. 10 illustrates the case where the ring 28 is attached to the tube end using the tube end diameter increasing / ring inserting device of the present invention to which the tube end ring insertion attachment 27 is attached.
10A, the vicinity of the end of the tube T is held by the tube end fixing and holding means 23, and the tip of the small diameter portion 27d of the tube end ring insertion attachment 27 is inserted into the end of the tube T. Indicates the state. In FIG. 10B, when the rear part of the casing 1 and the handle are grasped by hand and pulled toward the rear part of the casing 1, the shaft 4 moves forward, and the tube end ring insertion attachment 27 is advanced forward to attach the attachment 27. The ring 28 inserted in the small diameter portion 27d is pushed into the tube end portion. FIG. 10 (c) shows the state in which the pushed ring 28 remains in the tube end portion, and the rack releasing means releases the engagement between the rack and the rack rearward movement preventing means and the pinion gear and the latch. In addition, a process of pulling out the tube end ring insertion attachment 27 from the end portion of the tube T by turning the return dial 26 directly connected to the pinion gear as necessary or illustrated is illustrated.

  FIG. 11A shows a state in which the joint body 30 is pushed into the diameter-expanded portion of the tube T, and the nut portion 31 is screwed on the outside thereof to connect the tube T to the joint body 30. The bottom figure is the external view. FIG. 11B shows a state in which the end portion of the tube T into which the ring has been pushed into the joint body 32 is pushed, and the nut portion 33 is screwed to the outside thereof to connect the tube T to the joint. The bottom figure is the external view.

  The tube end diameter expansion / ring insertion device according to the present invention connects a tube to a chemical-resistant tube joint made of fluororesin such as polytetrafluoroethylene between the inlet and outlet in order to transfer chemicals in the semiconductor cleaning device. Used when Since the end of the chemical-resistant tube such as the above-mentioned fluororesin connected to the end of the pipe outlet and the pipe inlet via a tube joint can be easily expanded in diameter or inserted into a ring, it is industrially applicable. large.

  DESCRIPTION OF SYMBOLS 1 ... Casing, 2 ... Rack, 3 ... Rack pin, 4 ... Shaft, 6 ... Stopper, 7 ... Stopper shaft, 8 ... Compression spring, 9 ... Rack stop Tooth part, 10 ... Release lever, 11 ... Stopper tooth engagement protrusion, 12 ... Release lever pin, 13 ... Compression spring, 14 ... Rack advance tooth part, 15 ... Pinion gear pin, DESCRIPTION OF SYMBOLS 16 ... Latch handle, 17 ... Pinion gear, 18 ... Latch pin, 19 ... Latch, 20 ... Compression latch spring, 21 ... Compression spring, 22 ... Beam, 23 ... Tube end fixing and holding means, 23a ... upper holding member, 23b ... lower holding member, 23c ... hook part, 23d ... mounting part, 24 ... recessed part with screw, 25 ... tube Attachment for end diameter expansion, 5a ... Screw part, 25b ... Base part, 25c ... Large diameter part, 25d ... Large diameter part, 25e ... Small diameter part, 26 ... Return dial, 27 ... Tube end part Attachment for ring insertion, 27a ... Screw part, 27b ... Base part, 27c ... Large diameter part, 27d ... Small diameter part, 28 ... Ring, 30 ... Joint body, 31 ... Nut portion, 32 ... joint body, 33 ... nut portion, A ... rack housing space, B ... shaft housing space, C ... sliding groove, D ... stopper space, E ..Space for release lever, T ... Tube

Claims (3)

1. A casing extending in the longitudinal direction;
2. A rack having rack teeth that are slidably accommodated within a certain range in the longitudinal direction inside the casing and extend forward and backward on one side surface;
3. A shaft whose rear end is attached to the front end of the rack and accommodated inside the casing, and when the rack is moved forward in the longitudinal direction inside the casing, the front end is moved to the outside of the casing;
4). A tube end fixing and holding means which is integrally disposed in front of the casing via a beam and holds the vicinity of the end of the tube concentrically with the shaft;
5). A pinion gear that meshes with the rack teeth on the side surface of the rack, is held in the casing so as to be rotatable around the gear pins, and moves forward in the longitudinal direction inside the casing by being rotated forward.
6). A handle having one end rotatably held around the gear pin and extending from the one end to the other end;
7). A latch that is swingably mounted around a latch pin attached to the handle and is urged in the gripping direction of the handle to engage the latch teeth with the pinion gear. When the handle is rotated in the gripping direction, the pinion gear and the rack are A latch that rotates in the forward direction,
8). Rack urging means for urging the rack in a direction returning to the rear inside the casing;
9. A rack rearward movement preventing means that engages with a rack rearward movement preventing tooth provided on the other side surface of the rack and prevents the rack from returning backward in the casing;
10. A rack releasing means for releasing the engagement between the rack rearward movement preventing tooth and the rack rearward movement preventing means and the engagement between the pinion gear and the latch and moving the rack to the rearward position by the rack urging means. A tube end diameter expansion / ring insertion device, which is characterized. The tube terminal diameter expansion / ring insertion device according to the present invention further includes a return dial directly connected to the pinion gear, and the rotation of the return dial forcibly rotates the pinion gear to move the rack to the rear position. The tube end diameter expansion / ring insertion device according to claim 1, wherein the tube end diameter expansion / ring insertion device is possible. The tube end diameter increasing / ring insertion device according to claim 1, a tube end diameter increasing attachment detachably attached to the front end portion of the shaft, and a tube end ring insertion attachment. A tube end diameter expansion / ring insertion device capable of selectively attaching the tube end diameter expansion attachment and the tube end ring insertion attachment to the front end of the shaft.

Images