TW201811457A - Tube expander positioning structure featuring correct positioning and multi-direction operability comprising a locking plate that is movable to selectively fit into one of locking slots formed in a tube clamp for fixing the tube clamp to a main body - Google Patents

Abstract

A tube expander positioning structure featuring correct positioning and multi-direction operability comprises a main body and a tube clamp. The main body is provided with a receiving trough in a lower part thereof. The main body is provided, in a middle thereof, with a drift pin for tube expansion operation such that the drift pin is movable into the receiving trough. The tube clamp is inserted in the receiving trough. The tube clamp comprises a number of tube expansion holes having different hole diameters. A fixing bolt is mounted to the main body at a location beside the receiving trough. The fixing blot fixes the tube clamp in the receiving trough. The main body is provided, at a location close to one side of the receiving trough, with a movable locking plate. Locking slots that correspond, in number, to the tube expansion holes, are arranged at the corner of the tube clamp to correspond to the locking plate such that each of the locking slots is exactly located in a movement path of the locking plate when the one of the tube expansion holes corresponding thereto is set in alignment with a center of the drift pin. When the locking plate is fit into one of the locking slots, the locking slot is secured such that the tube expansion hole corresponding thereto is correctly aligned with the center of the drift pin. Afterwards, the fixing bolt is activated to fix the tube clamp so as to complete a positioning operation before tube expansion.

Description

 Expander positioning structure for positioning and multi-directional operation  

The invention is applied to the field of pipe expanders, in particular to a pipe expander positioning structure which is easy to operate, stable in positioning, and has a multi-directional operation.

Pipe expander is an indispensable tool for pipe laying. Its purpose is to expand the opening area of pipe fittings to facilitate quick connection with other pipe fittings.

The conventional expander structure mainly includes a pipe expander body and a pinch clamp. In its use, the pipe clamp must first be opened, and then the pipe piece to be expanded is placed into a pipe hole of a suitable size in the pipe clamp, and the pipe clamp is closed to complete the pipe fitting; The pinch clamp is then placed in the receiving groove below the body, the tube is aligned under the punch in the expander, and the punch is then punched down to complete the pipe expansion.

In order to maintain the quality of the tube after expansion, the focus is on ensuring that the tube is aligned with the stamping position of the punch. In the conventional method of aligning the pipe fittings, it is necessary to perform visual inspection by the user, and then the fastening bolts on the side of the pipe clamp are operated to fix the pipe clamps, so that the pipe expansion can be performed.

Since the visual inspection method relies entirely on the skill of the user, the construction quality is difficult to maintain, and it is difficult for an average person to achieve an accurate target. Even the skilled veterans may have failed in their work because of their blindness and distraction.

For this reason, the pincers are provided with a positioning groove at a position where the fastening bolt is fixed, so that the fastening bolt can be guided by the positioning groove to perform precise positioning. However, the dimensional error between the fastening bolt and the positioning groove is large, and even if the fastening bolt is not aligned with the center of the positioning groove, the clamp can be clamped by the force applied. Thus, when the ram is activated, the expansion surface of the pipe is inevitably displaced and cannot be used, and the ram is further rubbed against the pincer to cause wear.

In addition, some of the conventional pliers will have a powerful magnet for assisting positioning between the proper position and the body, and the pliers can be quickly positioned in the correct position by the strong magnet, and then the fastening bolt is used to complete the pliers. Positioning. However, the fixing method of the strong magnet is non-contact type. When the ram is activated, the generated force and vibration can easily push the strong magnet, thereby causing damage to the pipe member or the pincer.

Furthermore, the conventional pipe expander must be kept in a certain position when positioning the pincers, so that the user can easily observe the positioning, and if the work space is inconvenient in a narrow working space, there is still a Improve the space.

It can be seen that there is still a problem in the conventional expander that needs to be solved, rather than a good design.

The inventor of the present invention lacks the positioning structure of the conventional pipe expander and the pincers according to the foregoing, that is, to improve and actively research and innovate, and through long-term research and development and implementation, the pipe can be completely positioned and multi-directionally operated. Positioning structure.

The main object of the present invention is to provide a pipe expander positioning structure for real positioning and multi-directional operation, which effectively ensures the accuracy of the pipe expansion position, allows the user to concentrate on the pipe expansion work, and can obtain good construction quality.

Another object of the present invention is to provide an expander positioning structure that is truly positioned and omnidirectional, which is easy to operate and allows the user to operate in multiple directions without being limited by the site to meet the work requirements.

A further object of the present invention is to provide a expander positioning structure that is truly positioned and omnidirectional, which utilizes a simple structural design to achieve powerful positioning, low cost, and easy maintenance.

A pipe expander positioning structure capable of achieving the above-mentioned purpose, which comprises a body and a pinch clamp, the body has a receiving groove under the body, and a punch for performing the pipe expanding action is arranged in the middle of the body The nipper is inserted into the accommodating groove, and the pinch clamp is disposed in the accommodating groove. The pipe clamp is provided with a plurality of expansion holes of different apertures, and the body is adjacent to the accommodating groove A fastening bolt is disposed on the side, and the fastening bolt fixes the clamp clamp in the receiving groove.

The invention is mainly provided with a movable gusset plate on the side of the body adjacent to the accommodating groove, and a buckle groove having the same number as the expansion pipe hole is disposed on a side edge of the gusset plate on the side of the pinch clamp When the corresponding expansion hole is aligned with the center of the punching hole, the buckle groove is located on the movable path of the buckle plate. When the buckle plate is engaged in any of the buckle grooves, the buckle groove is caught. The corresponding expansion hole is surely aligned with the center of the punch, and then the fastening bolt is pushed to fix the pinch clamp to complete the positioning action before the pipe expansion.

The gusset plate is provided with a rotating shaft on the body, so that the gusset plate rotates around the rotating shaft, and a control panel is extended at the rear end of the gusset plate, so that the user can push or press the control panel with a finger to drive the The gusset is rotated, and then the gusset is inserted or removed from the buckle. A return spring is disposed between the control panel and the body, and the return spring normally supports the insertion of the gusset into the buckle groove, and the user presses the control panel to release the gusset from the buckle groove to move the clamp tube When the user relaxes the control panel, the buckle is subjected to the elastic force of the return spring, and is automatically buckled for positioning when any of the buckles on the clamp is in contact.

In addition, the position, length and angle of the control panel relative to the body can be adjusted, so that when the use of the body is held at any angle, the finger can contact the control panel to facilitate the operation of the gusset.

Further, the thickness of the gusset is equal to the width of the buckle to stabilize the position of the clamp in the accommodating groove.

1‧‧‧ Ontology

11‧‧‧ accommodating slots

12‧‧ ‧ write-off

13‧‧‧ fastening bolts

2‧‧‧Pliers

21‧‧‧Expanding holes

22‧‧‧ positioning slot

23‧‧‧ buckle groove

3‧‧‧ 扣板

31‧‧‧ shaft

32‧‧‧Control panel

33‧‧‧Return spring

4‧‧‧ fingers

1 is a perspective exploded view of the present invention; FIG. 2 is an enlarged perspective view of the gusset plate of FIG. 2; FIG. 3 is a side view of the present invention; FIG. 5 is a schematic view of the operation mode of the present invention; and FIG. 6 is a schematic view of another operation mode of the present invention.

Referring to FIG. 1 to FIG. 5, the expander positioning structure of the present invention, which is referred to as a true positioning and multi-directional operation, includes a body 1 and a clamp pipe clamp 2.

The body 1 has a receiving groove 11 at the bottom of the body. The body 1 is provided with a punch 12 for moving up and down to extend the pipe. The front end of the punch 12 extends into the receiving groove 11 for pipe expansion.

The pinch clamp 2 is disposed in the accommodating groove 11, and the pincer 2 is provided with a plurality of expansion holes 21 of different apertures, and each of the expansion holes 21 can clamp the corresponding size of the pipe (not shown) When the pipe is expanded, the pipe expanding hole 21 is aligned with the center of the punching pin 12, and then the punching pin 12 is pressed to perform the pipe expanding operation. In order to fix the pincer 2, the body 1 is provided with a fastening bolt 13 on the side of the receiving groove 11, and a positioning groove 22 is provided on the side of the pincer 2 opposite to the pipe expanding hole 21, When any of the expansion holes 21 is aligned with the center of the punch 12, the corresponding positioning groove 22 is aligned with the end of the fastening bolt 13, and then the fastening bolt 13 is pushed to fix the clamp 2 The accommodating groove 11 is inside.

The present invention is characterized in that a movable gusset 3 is disposed on a side of the body 1 adjacent to the accommodating groove 11 , and the expansion hole 21 is disposed on a side of the gusset 3 on the side of the side of the clamping tongs 2 . The same number of buckle slots 2323, each of the buckle slots 23 is located on the active path of the gusset 3 when the corresponding expansion hole 21 is aligned with the center of the ram 12, when the gusset 3 is engaged After the buckle groove 23, the expansion hole 21 corresponding to the buckled groove 23 is surely aligned with the center of the punch 12, and then the fastening bolt 13 is pushed against the positioning groove 22 to fix the clip. The pipe wrench 2 completes the positioning action before the pipe expansion.

The gusset 3 is provided with a rotating shaft 31 on the body 1, so that the gusset 3 is rotated about the rotating shaft 31, and then inserted or removed from the buckle groove 23. A control panel 32 extends from the rear end of the gusset 3 to facilitate the user to push or press the control panel 32 with the finger 4 to drive the gusset 3 to rotate. A return spring 33 is disposed between the control panel 32 and the body 1. The return spring 33 normally supports the insertion of the gusset 3 into the buckle slot 23, and the user presses the control panel 32 with the finger 4 to The pinch plate 3 is separated from the buckle groove 23 to move the pinch clamp 2 .

With the above structure, when the user wants to change the diameter of the expansion hole 21, first press the control panel 32 with the finger 4 to let the gusset 3 leave the buckle groove 23, and then push the clamp tong 2 to move. After the control panel 32 is loosened, the clamp clamp 2 can still be pushed without any buckle 23 aligned with the buckle 3 until any of the buckles 23 contacts the buckle 3, The gusset 3 is subjected to the elastic force of the return spring 33, and is automatically buckled into the buckle groove 23 to complete the positioning.

The thickness of the gusset 3 is equal to the width of the buckle 23 to stabilize the position of the clamp 2 in the accommodating groove 11. When the gusset 3 is inserted into the buckle 23, the clamp can be reliably positioned. The pliers 2, and then the fastening bolts 13 are used to secure the position of the pliers 2 in various ways.

In addition, referring to FIG. 5 and FIG. 6 , the gusset 3 of the present invention is disposed at a position about the center of the body 1 , and the position, length, and angle of the control panel 32 extending relative to the body 1 can be adjusted. When the body 1 is held at any angle, the finger 4 can contact the steering panel 32 to operate the gusset 3 to operate.

The structure of the present invention completed as described above has the following advantages as compared with the prior art:

The positioning of the buckle plate 3 and the buckle groove 23 is matched with the original fastening bolt 13 to clamp the clamp pipe clamp 2 in multiple aspects, which not only generates the rapid positioning work, but also can be positioned. The expansion hole 21 is surely aligned with the center of the punch 12, and is not displaced by the vibration during operation, so that the need for precise pipe expansion can be achieved.

2. Multi-directional operation, the position of the gusset 3 and the control panel 32 is suitable, so that the user can perform the positioning operation when holding the body 1 at any angle, regardless of the limitation of the visual positioning, and can be used at any time. The site is quickly and accurately expanded.

The detailed description of the preferred embodiments of the present invention is intended to be limited to the scope of the invention, and is not intended to limit the scope of the invention. The patent scope of this case.

Claims (6)

 An expander positioning structure for a positive positioning and a multi-directional operation includes a body having a receiving groove under the body, and a punch for performing a pipe expanding action is disposed in the middle of the body, so that the punch protrudes into the receiving portion a clamping pipe clamp is disposed in the receiving groove, and the clamping pipe clamp is provided with a plurality of expansion holes of different apertures, and the body is provided with a fastening bolt on a side of the receiving groove, the fastening bolt The clamp pipe clamp is fixed in the accommodating groove, wherein the movable body is disposed on a side of the body adjacent to the accommodating groove, and is disposed on a side of the side of the clamp tong There are the same number of the expansion holes, and each of the buckles is located on the movable path of the gusset when the corresponding expansion hole is aligned with the puncturing center, when the gusset is stuck After the buckle is grooved, the expansion hole corresponding to the buckled groove is surely aligned with the punching center, and then the fastening bolt is pushed to fix the clamp pipe clamp to complete the positioning operation before the pipe expansion.    The expander positioning structure of the locating and multi-directional operation is as described in claim 1, wherein the gusset is provided with a rotating shaft on the body, so that the gusset rotates around the rotating shaft, and then is inserted or left. Buckle.    An expander positioning structure that is positioned and omnidirectionally operated according to claim 2, wherein a rear end of the gusset extends a control panel for facilitating the user to push or press the control panel to drive the gusset The rotation.    An expander positioning structure that is positioned and omnidirectionally operated according to claim 3, wherein a reset spring is disposed between the control panel and the body, and the return spring supports the insertion of the gusset into the buckle slot. The user presses the control panel to move the buckle plate away from the buckle groove to move the clamp pipe clamp. When the user relaxes the control panel, the buckle plate is subjected to the elastic force of the return spring, and the clamp tube is Any of the buckles on the pliers are automatically snapped in for contact.    An expander positioning structure that is positioned and omnidirectionally operated as described in claim 3, wherein the position, length, and angle of the control panel relative to the body can be adjusted, so that when the body is held at any angle, The finger can be in contact with the dashboard to facilitate operation of the gusset.    The expander positioning structure of the locating and the multi-directional operation is as described in claim 1, wherein the thickness of the gusset is equal to the width of the buckle to stabilize the position of the clamp in the accommodating groove.