TWI571331B - Tube expander - Google Patents

Description

Expander

The invention relates to a pipe expander, and in particular to a pipe expander that is convenient for assembly and use.

According to the structure of the general pipe expander, as disclosed in the patent TWI490056, the utility model mainly comprises a hydraulic device, which has a piston rod which can be reciprocated outwardly at one end, the piston rod has a piston head and a tapered expansion pipe head, when the piston The piston rod moves outward when it is pushed by hydraulic oil.

However, the structure as described above does not have a pinch tube assembly that can be quickly adjusted and positioned, and is inconvenient in practical use; in addition, the above structure does not have the function of protecting the pipe member, and the pipe fitting for pipe expansion is easy to apply. The force is too large and damaged; in addition, how to further improve the expansion of the pipe expansion mechanism and the pinch assembly is easier to assemble and use, which is also the object of the invention.

Therefore, it is necessary to provide a novel and progressive expander to solve the above problems.

The main object of the present invention is to provide a pipe expander, which can be quickly and easily assembled with the pipe expanding mechanism, has excellent working efficiency, is simple in operation and convenient to use, and can have inclined extension and divergence. The inner side wall can have guiding effect and provide more space for the rods to open to each other; in addition, the tube can be further protected to avoid damage caused by excessive force applied by the tube.

In order to achieve the above object, the present invention provides a pipe expander comprising: a pinch tube assembly, at least one clamping hole and at least one latching mechanism, the latching mechanism can be retracted and automatically reset to protrude from the pinch tube a surface expansion unit, comprising: a set of port structure and a reaming head movable toward the pinch tube assembly, the sleeve structure being movably sleeved on the pinch tube assembly, the sleeve structure being Its movement direction interferes with the click mechanism.

1‧‧‧ Expander

10‧‧‧Pinch assembly

101‧‧‧ slots

23‧‧‧ inner side wall

24‧‧‧ Guide column

25‧‧‧ Fixed Department

102‧‧‧ groove rail

11‧‧‧Clamping holes

12‧‧‧Carton institutions

121‧‧‧ card

122‧‧‧Flexible parts

123‧‧‧Limited parts

124‧‧‧Chute

125‧‧‧Bevel

126‧‧‧ lead angle

13‧‧‧ pivoting end

14‧‧‧First body

141‧‧‧First arc convex

142‧‧‧ first slope

15‧‧‧Second body

151‧‧‧Second arc convex

152‧‧‧second slope

16‧‧‧ ring

17‧‧‧ angle

18‧‧‧stop pin

20‧‧‧Extension mechanism

21‧‧‧ socket structure

22‧‧‧Expanded head

26‧‧‧ Positioning Department

27‧‧‧Removal

30‧‧‧ Pipe fittings

40‧‧‧ §

41‧‧‧ first body

411‧‧‧ card slot

42‧‧‧Second body

43‧‧‧ oblique body

44‧‧‧ convex

50‧‧‧Fixed holes

51‧‧‧Positioning recess

60‧‧‧ drive parts

61‧‧‧Compression

63‧‧‧Drive Tools

64‧‧‧ Transmission parts

65‧‧‧Compressed spring

66‧‧‧Bounce spring

67‧‧‧Carmen

68‧‧‧Loose end

69‧‧‧ jack

70‧‧‧ guiding slope

1 is a schematic view of a preferred embodiment of the present invention.

2 is a schematic view of a pipe expansion mechanism of the preferred embodiment of the present invention.

Figure 3 is an exploded view of the preferred embodiment of the present invention.

4 is a schematic view of a pinch tube assembly of the preferred embodiment of the present invention.

Figure 5 is a schematic view of the card member of the preferred embodiment of the present invention.

Figure 6 is a cross-sectional view of the preferred embodiment of the present invention.

Figure 7 is a schematic view showing the state of use of the preferred embodiment of the present invention.

The following is a description of the possible embodiments of the present invention, and is not intended to limit the scope of the invention as claimed.

Referring to Figures 1 through 7, there is shown a preferred embodiment of the present invention. A pipe expander 1 of the present invention includes a pinch tube assembly 10 and a pipe expansion mechanism 20.

The pinch tube assembly 10 is provided with at least one clamping hole 11 and at least one latching mechanism 12, and the latching mechanism 12 can be retracted and automatically reset to protrude from the surface of the pinch tube assembly 10, for example, the pinch tube The assembly 10 includes, for example, a pivoting end 13 and has a first shaft that can be pivoted to each other 14 and a second rod body 15, the first and second rod bodies 14, 15 can be clamped to each other to form the clamping hole 11. Further, the first and second shanks 14, 15 respectively have a first arc 141 and a second arc 151 at the pivoting end 13, and the first and second arcs 141, 151 are sleeved a first ring surface 142 and a second slope surface 152 are respectively disposed on the side surfaces of the first and second rod bodies 14 and 15 opposite to each other, and the first and second slope surfaces 142, 152 are respectively from the first and second sides. The arc ridges 141, 151 extend toward an end, and the first and second slopes 142, 152 have an angle 17 therebetween, so that the first and second rods 14, 15 can be pivoted and opened for, for example, clamping a pipe member 30. The first and second rod bodies 14, 15 are respectively provided with the latching mechanism 12 at the pivoting end 13.

In this embodiment, the latching mechanism 12 is resiliently protruded from the surface of the pinch tube assembly 10. The latching mechanism 12 includes a latching member 121 and an elastic member 122. At least a portion of the latching member 121 is The two ends of the elastic member 122 are respectively connected to the card member 121 and the pinch tube assembly 10, and the elastic member 122 has an elasticity to enable the The card member 121 has a tendency to protrude from the surface of the pinch tube assembly 10. For example, the pinch tube assembly 10 can be recessed with at least one slot 101 so that the card member 121 can be slidably disposed in the slot 101. The member 122 is springed between the card member 121 and the inner wall of the slot 101. More specifically, the latch mechanism 12 can further include a limiting member 123. One end of the limiting member 123 is, for example, a threaded lock. The clip member 10 is disposed in the slot 101 and extends into the slot 124 of the card member 121 so that the card member 121 can pass through the slot 124 and the limiting member 123. It can be prevented from being ejected from the slot 101.

One of the side portions of the pinch tube assembly 10 can be provided with a blocking member 40. The pinch tube assembly 10 can be recessed with at least one groove track 102. Further, the blocking member 40 can include a first piece 41 and a second body 42 , the first body 41 is slidably disposed on the groove track 102 , and the second body 42 extends in the direction of the clamping hole 11 and traverses the clamping hole 11 , so that the second piece 42 can, for example, be positioned to extend the height of the tube 30 into the clamping hole 11 . The edge of the second body 42 is circumferentially provided with a plurality of inclined body members 43 extending obliquely upward, and the second body 42 is provided with at least one convex portion adjacent to the first body 41. 44. More specifically, the slanting body 43 and the convex portion 44 can increase the structural strength of the damper 40, and the damper body 40 can be easily deformed by collision with the pipe member 30, and the slanting body is damaged. 43 can be guided with the tube 30 for easy relative movement. The first plate body 41 is recessed with a slot 411. The pinch tube assembly 10 is inserted with a stop pin 18, and one end of the stop pin 18 protrudes from the surface of the pinch tube assembly 10 and is selectively The card slots 411 are mutually offset to prevent the blocking member 40 from coming out of the pinch tube assembly 10.

The pipe expansion mechanism 20 includes a set of port structure 21 and a reaming head 22 movable toward the pinch tube assembly 10, and the cuff structure 21 is movably sleeved on the pinch tube assembly 10, and the cuff structure 21 is The latching mechanism 12 can interfere with the latching mechanism 12 in its moving direction. For example, in actual use, the latching mechanism 12 can allow the sleeve structure 21 to be sleeved toward the pinch tube assembly 10 in a first direction and pressed. The sleeve structure 21 is movably fitted into the tube assembly 10 against the cassette mechanism 12 and over the cassette mechanism 12, and the sleeve structure 21 cannot be in a second direction opposite to the first direction. The latching mechanism 12 is pressed against and retracted by the latching mechanism 12 and cannot be released from the pinch tube assembly 10. More specifically, a side surface of the card member 121 facing the second direction may be formed, for example, with a slope 125, and the sleeve structure 21 is sleeved in the first direction toward the pinch tube assembly 10 and interacts with the latch mechanism 12 When the interference is performed, the inclined surface 125 of the card member 121 is pressed by one end of the sleeve structure 21 to be buried in the slot 101 of the pinch tube assembly 10, so that the sleeve structure 21 can be inserted through the latching mechanism 12 The pinch assembly 10. It is worth mentioning that the edge of the inclined surface 125 of the card member 121 can be provided with at least one lead angle 126 to prevent the card member 121 from being easily worn when interfering with the sleeve structure 21. Consume damage. Through the assembly of the pinch tube assembly 10 and the cuff structure 21 by the latching mechanism 12, the pinch tube assembly 10 can be easily and quickly assembled with the pipe expanding mechanism 20, and has excellent working efficiency. And easy to operate, easy to use.

As described above, the sleeve structure 21 has opposite inner side walls 23, and the two inner side walls 23 respectively extend obliquely along the first direction, and the two inner side walls 23 are selectively facing each other. In a direction, the two inner side walls 23 can have the effect of guiding the pinch tube assembly 10 so that the pinch tube assembly 10 can be assembled to the cuff structure 21 more easily. And the two inner side walls 23 can provide more space for the first and second rods 14, 15 to open away from each other, and when the first and second rods 14, 15 are open to each other, The inner side walls 23 abut each other. A guide post 24 is further disposed on the inner wall of the sleeve structure 21, so that the pinch tube assembly 10 can be slidably disposed on the guide post 24, for example, through the pinch tube assembly 10. The groove rail 102 is slidably disposed on the guide post 24 to produce a guiding effect.

The expansion mechanism 20 can further have a fixing portion 25, a positioning portion 26 and a releasing portion 27, and the fixing portion 25 can be screwed to laterally urge the pinch tube assembly 10, and the positioning portion 26 is fastened to the pinch tube assembly One of the sleeve structures 21 is disposed on the inner side of the sleeve structure 21, and the positioning portion 26 is selectively engageable with the tube assembly 10. For example, the opposite sides of the tube assembly 10 can be respectively provided with a plurality of fixing recesses 50. And the plurality of positioning recesses 51, one end of the fixing portion 25 can selectively press against one of the fixing recesses 50, and the positioning portion 26 can be selectively positioned with one of the positioning recesses 51.

The expansion mechanism 20 can further include a driving member 60 and a pressing member 61 that are relatively pivotally movable. The top end of the driving member 60 is assembled by a driving tool 63. The pressing member 61 and the reaming head 22 are mutually connected. Connecting, the loose portion 27 is releasably snapped to the driving member 60 and the pressing Between the members 61, when the driving tool 63 drives the driving member 60, the driving member 60 drives the pressing member 61 and the reaming head 22 through the releasing portion 27 and presses the reaming head 22 against the tube member. At one end of the 30, a bell mouth is formed, and when the predetermined amount of pressure is reached between the counterbore head 22 and the tube member 30, the releasing portion 27 is loose between the driving member 60 and the pressing member 61. The driving member 60 can not continue to drive the pressing member 61 and the reaming head 22, and the tube member 30 can be further protected from excessive damage caused by the force applied.

Further, the expansion mechanism 20 may further include a transmission member 64 and a compression spring 65. The opposite ends of the transmission member 64 are respectively connected to the driving member 60 and the reaming head 22, and the compression spring 65 is The opposite ends are respectively disposed between the pressing member 61 and the transmission member 64 near the end of the reaming head 22, and when the pressing force between the reaming head 22 and the tube member 30 is gradually increased, the compression spring 65 is gradually increased. The deformation is gradually compressed such that the reaming head 22 and the pressing member 61 gradually approach each other, and the driving member 60 and the pressing member 61 are gradually separated from each other. The release portion 27 includes a trip spring 66 and a latch 67. One end of the trip spring 66 is elastically engaged with the driving member 60 and the other end is biased against the latch 67. One of the latches 67 is loose. The 68 is inserted into one of the insertion holes 69 of the pressing member 61. The latch 67 is cylindrical and has an elastic abutting groove at one end of the releasing end 68. The trip spring 66 is received in the elastic abutting groove. The insertion hole 69 has a circular shape, and the loose end 68 has a guiding inclined surface 70 which can abut against the insertion hole 69. The guiding inclined surface 70 can be inclined by 30 degrees substantially with respect to a horizontal plane, and the releasing end 68 is The total length is one-third of the total length of the latch 67, and the loose end 68 protrudes from the surface of the driving member 60, and the loose end 68 is selectively detachable from the receptacle 69. More specifically, when the driving member 60 and the pressing member 61 are gradually separated from each other, the loose end 68 of the latch 67 gradually comes out from the insertion hole 69, and when the guiding surface 70 and the insertion are inserted The friction between the holes 69 is smaller than the torque applied by the driving tool 63 to the driving member 60. At this time, the guiding slope 70 is detached from the insertion hole 69, so that the driving member 60 cannot continue to drive the pressing member 61. The axial direction of the reaming head 22 and the axial direction of the transmission member 64 may also be inclined to each other, so that the reaming head 22 can more easily press the tubular member 30 to form the bell mouth.

In summary, the pipe expander of the present invention has a retractable and automatically resetting chucking mechanism, so that the pinch tube assembly can be assembled with the pipe expanding mechanism conveniently and quickly, has excellent working efficiency, and is easy to operate and use. Convenience.

In addition, the cuff structure can have an obliquely extending and diverging inner side wall that can provide a guiding effect that allows the pinch assembly to be assembled more easily and provides more space for the first and second shafts to open away from each other.

In addition, it can have a torsion release function, which can further protect the pipe fittings and avoid damage caused by excessive force applied by the pipe fittings.

In summary, the overall structural design, practicability and efficiency of the present invention are indeed fully in line with the needs of industrial development, and the disclosed structural invention is also an unprecedented innovative structure, so it has "novelty" should Undoubtedly, the invention can be more effective than the conventional structure, and therefore has "progressiveness", which fully complies with the requirements of the application requirements of the invention patents of the Chinese Patent Law, and is filed according to law, and please The bureau will review it early and give it affirmation.

1‧‧‧ Expander

10‧‧‧Pinch assembly

102‧‧‧ groove rail

11‧‧‧Clamping holes

12‧‧‧Carton institutions

20‧‧‧Extension mechanism

50‧‧‧Fixed holes

60‧‧‧ drive parts

61‧‧‧Compression

63‧‧‧Drive Tools

Claims (10)

A pipe expander comprising: a pinch tube assembly, at least one clamping hole and at least one latching mechanism, the latching mechanism is retractably protruding on a surface of the pinch tube assembly; and a pipe expanding mechanism includes a a socket structure and a reaming head movable toward the pinch tube assembly, the sleeve structure is movably sleeved on the pinch tube assembly, and the sleeve structure can interfere with the latch mechanism in a moving direction thereof One of the side of the pinch tube assembly is provided with a stop member, and the pinch tube assembly is recessed with at least one groove track, the block member includes a first piece body and a second piece body, the first piece body is limited The ground plate is slidably disposed on the groove rail, and the second sheet body extends in the direction of the clamping hole and is disposed above the clamping hole. The expander of claim 1, wherein the latching mechanism is retractably and automatically resets to protrude from a surface of the pinch tube assembly. The expander of claim 2, wherein the latching mechanism is configured to allow the sleeve structure to be sleeved in the first direction toward the pinch tube assembly and pressed against the latching mechanism and over the latching mechanism The mouth structure is movably inserted into the pinch tube assembly, and the sleeve structure cannot be pressed against the retracting mechanism and is jammed by the latching mechanism in a second direction opposite to the first direction The pinch assembly is detachably protruded from the surface of the pinch tube assembly, and the latching mechanism comprises a card member and an elastic member, at least part of the card member being convexly disposed a surface of the pinch tube assembly, a side surface of the card member facing the second direction is formed with a sloped surface, the two ends of the elastic member are respectively connected to the card member and the pinch tube assembly, and the elastic member has an elasticity to enable the The card member has a tendency to protrude from the surface of the pinch tube assembly. The expander of claim 3, wherein the pinch tube assembly is recessed with at least one slot, the cassette The mechanism further includes a limiting member, the card member is slidably disposed in the slot, the elastic member is elastically disposed between the card member and the inner wall of the slot, and one end of the limiting member is fixed to the pinch tube assembly, The other end projects into the slot and extends into a slot in the side of the card. The expander of claim 3, wherein the pinch tube assembly comprises a pivoting end and has a first rod body and a second rod body pivotally openable to each other, the first and second rod bodies Each of the first and second arc-shaped sleeves is provided with a ring, and the first and second rods respectively have a first side on the side opposite to each other. a first inclined surface and a second inclined surface extending from the first and second curved surfaces toward the end, the first and second inclined surfaces having an angle between the first and second inclined bodies The latching mechanism is respectively disposed at the pivoting end. The expander of claim 1, wherein the sleeve structure has opposite inner side walls, the two inner side walls respectively extending obliquely along the first direction, and the two inner side walls are selectively spaced apart from each other Dilate in the first direction. The expander of claim 1, wherein the end edge of the second body is circumferentially provided with a plurality of obliquely extending obliquely upwardly facing bodies, the second body being adjacent to the first body. There is at least one convex portion. The expander of claim 1 , wherein the first body is recessed with a card slot, and the pinch assembly is inserted with a stop pin, and one end of the stop pin protrudes from the surface of the pinch assembly And optionally, the card slot is mutually offset. The expander of claim 1 further comprising a positioning portion and a releasing portion, the positioning portion being disposed inside one of the sleeve structures, the positioning portion being selectively engageable with the tube assembly The locating mechanism further includes a drive member and a pressing member that are relatively pivotally movable. The top end of the driving member is connected to a driving tool, and the pressing member is connected to the reaming head, and the releasing portion is releasably engaged between the driving member and the pressing member. The expander of claim 9, wherein the inner wall of the sleeve structure is convexly provided with a guiding post, the clamping tube assembly is slidably disposed on the guiding post, and the expanding mechanism has another The screw lock laterally urges the fixing portion of the pinch tube assembly, and the opposite sides of the pinch tube assembly are respectively provided with a plurality of fixing concave holes and a plurality of positioning concave holes, and one end of the fixing portion can selectively pressurize one of the fixing portions The fixing recess can selectively engage with one of the positioning recesses, the expansion mechanism further comprising a transmission component and a compression spring, the opposite ends of the transmission component and the driving component and The reaming head is connected, and the opposite ends of the compression spring are respectively elastically supported between the pressing member and the transmission member, and the releasing portion comprises a trip spring and a latch, and the trip spring is elastically attracted to the end. And the other end of the driving member is inserted into the insertion hole of the pressing member, and the releasing end has a guiding inclined surface which can abut against the insertion hole. The detaching end is selectively detachable from the insertion hole, and the guiding slope is relatively horizontal The surface is inclined by 30 degrees, and the total length of the loose end is one-third of the total length of the latch, and the loose end protrudes from the surface of the driving member, and the latch is cylindrical and opposite One end of the release end has a resilient abutment groove, and the trip spring is received in the elastic abutment groove. The insertion hole is substantially circular, and the axial direction of the reaming head and the axial direction of the transmission member are inclined to each other.