TWI703046B - Apparatus for removing excessive coating on composite pipes or the like and method for manufacturing the same - Google Patents

Abstract

An apparatus for removing excessive coating includes a metal pipe with outer coating includes a stuffing jig, an upper cutting die and a lower cutting die. The stuffing jig is installed on the metal pipe. The upper cutting die has an upper blade holder, a movable member located on the upper blade holder, two upper links passing through the movable member and upper blade holder, and an upper driving member engaged to the two upper links. The lower cutting die has a lower blade holder, a fixing member disposed on the lower blade holder, two lower links passing through the lower blade holder and fixing member, and a lower driving member engaged to the two lower links. By down pressing the upper cutting die, the upper and lower blade holder correspondingly and effectively removing the excessive coating on an upper hole and a lower hole of the composite pipe.

Description

Glue removing device and manufacturing method for composite pipe fittings

The invention relates to a manufacturing equipment for composite pipe fittings, in particular to a glue removing device and manufacturing method for composite pipe fittings.

The armrests of sports equipment are usually made of a composite pipe. The composite pipe has a metal tube and a coating rubber covering the metal tube. The coating rubber can improve the user’s grip comfort and protection. Static electricity, and in order to improve the convenience of use, various operating elements are usually installed on the composite pipe, so the composite pipe must be provided with mounting holes.

Referring to Figures 1 and 2 for the manufacture of the composite pipe 10, a metal pipe 11 is provided with an upper hole 12 and a lower hole 13 communicating with an inner hole 111 and aligned with each other, and then a hole plug fixture 14 is removed from The lower hole 13 is inserted into the inner hole 111 and the upper hole 12 and the lower hole 13 are filled, and then the metal tube 11 and the hole plug fixture 14 are placed in a glue tank (not shown) for a predetermined time After taking out the metal pipe 11 and the hole plug fixture 14, a covering glue 15 can be formed outside the metal pipe 11 and the hole plug fixture 14. Finally, manually corresponding to the covering glue 15 The upper hole 12, an upper hole removal portion 151 and a lower hole removal portion 152 of the upper hole 12, the lower hole 13 are cut off, and the hole plug fixture 14 is taken out from the lower hole 13, and the composite pipe 10 can be manufactured.

Although the above-mentioned manufacturing method can produce the composite pipe 10, the upper hole removal portion 151 and the lower hole removal portion 152 of the coating rubber 15 are manually cut, which has poor working efficiency and unstable glue removal quality, which seriously affects the The product yield problem of the composite pipe fitting 10.

Therefore, an object of the present invention is to provide a glue removing device for composite pipes that can improve work efficiency and control the stability of glue removal quality to improve the product yield of composite pipes.

Another object of the present invention is to provide a method for manufacturing composite pipe fittings that can improve work efficiency and control the stability of glue removal quality to improve the product yield of composite pipe fittings.

Therefore, the glue removing device of the present invention is suitable for a composite pipe, the composite pipe has a metal tube and a coating glue, the metal tube has an inner hole, and an upper hole and a lower hole connecting the inner hole, the covering The glue has an upper hole removal part located outside the upper hole and a lower hole removal part located outside the lower hole. The glue removing device includes a hole plug fixture, an upper knife mold and a lower knife mold; the hole plug The jig includes a body for inserting into the inner hole of the metal tube, an upper hole plug portion on an upper surface of the body for filling the upper hole, and a lower surface of the body for filling the The lower hole plug part of the lower hole; the upper knife mold includes an upper knife seat, an upper movable seat, two upper connecting rods and an upper driving block. The upper knife seat has a first base wall and a self-supporting The peripheral edge of the wall extends downward and defines a first ring wall of a first chamber open below, and an upper blade provided at the lower end of the first ring wall, and the upper blade is used to cut off the upper part of the coating Hole removal part, the upper movable seat is located on the first base wall of the upper knife seat, the two upper connecting rods penetrate between the upper movable seat and the first base wall and extend into the first chamber, the The upper driving block is connected to the two upper connecting rods and is located in the first chamber, and can push the body of the hole plug fixture to drive the composite pipe to move downward; the lower knife mold includes a lower knife seat and a lower fixed seat , Two lower connecting rods and a lower driving block, the lower tool holder has a second base wall, a second ring wall extending upward from the periphery of the second base wall and defining a second chamber open above, And a lower blade provided on the upper end of the second ring wall, the lower blade is used to cut the lower hole removal part of the covering glue, the lower fixing seat is located under the second base wall of the lower blade seat, the two lower blades The connecting rod penetrates between the lower fixing seat and the second base wall and extends into the second chamber. The lower driving block is connected to the two lower connecting rods and is located in the second chamber, and can be passed by the hole The plug fixture is pushed to drive the two lower connecting rods to move down.

The effect of the glue removing device of the composite pipe of the present invention is that by mechanically cutting the upper hole removing part and the lower hole removing part of the coating rubber, the work efficiency can be improved, and the stability of the glue removing quality can be controlled to improve the composite pipe Product yield.

The manufacturing method of the composite pipe of the present invention includes the following steps: (A) Prepare the metal pipe as described above; (B) Prepare the glue removing device as described above, install and fix the lower fixing seat of the lower die of the glue remover on a workbench of a glue remover, and assemble the upper die on the A force-applying part of the glue remover, and the upper die is located directly above the lower die; (C) Put the hole plug fixture into the metal pipe, and place the body of the hole plug fixture in the inner hole of the metal pipe, and the upper hole plug part and the lower hole plug part of the hole plug fixture fill the The upper hole, the lower hole; (D) Put the metal pipe and the hole plug fixture into a glue tank and soak for a predetermined time, then take out the metal pipe and the hole plug fixture, the metal pipe and the hole plug fixture will form the Covering glue, and the metal pipe and the covering glue form the composite pipe fitting, the covering glue has an upper hole removal part located outside the upper hole and a lower hole removal part located outside the lower hole; (E) Place the composite pipe and the hole plug fixture on the lower knife mold, and make the lower hole removal part of the coating glue directly above the lower knife edge, and the upper hole removal part of the coating glue Located directly below the upper blade; (F) Make the force application member drive the upper knife mold down, make the upper drive block press the hole plug fixture, and then make the force application member apply pressure to the upper knife mold to make the upper movable seat and the The upper knife seat and the upper drive block descend, the upper drive block pushes the piston jig and the composite pipe to descend, the piston jig pushes the lower drive block and the two lower connecting rods to descend, thereby causing the upper knife blade to stab Cut off the upper hole removal part by piercing the covering glue, and cut off the lower hole removal part by piercing the covering glue by the lower blade; (G) Make the force application member drive the upper die ascend; (H) Remove the composite pipe and the piston jig from the lower die, and remove the upper hole removal part and the lower hole removal part from the coating glue; and (I) Take out the piston jig from the lower hole of the metal pipe, and make the piston jig detach from the composite pipe, and then the composite pipe with the upper hole removal part and the lower hole removal part cut off.

The effect of the manufacturing method of the composite pipe of the present invention is that by mechanically cutting the upper hole removal part and the lower hole removal part of the coating rubber, the work efficiency can be improved, and the stability of the glue removal quality can be controlled to improve the product of the composite pipe Yield rate.

The following describes the present invention in detail with reference to the accompanying drawings and embodiments. Before the present invention is described in detail, it should be noted that the relative position terms used in the following description, such as "left and right direction X", "up and down direction Y", are Take the orientation shown in each figure and the normal use orientation as a reference, and the left-right direction X and the up-down direction Y are perpendicular to each other.

Referring to Figures 3 to 6 and Figure 9, an embodiment of the glue removing device 2 of the present invention is used to cut off an upper hole removal portion 71 and a lower removal portion 72 of a covering glue 70 of a composite pipe 6, and the composite The pipe 6 has a metal pipe 60 extending along the left and right direction X, the metal pipe 60 has an inner hole 61, and an upper hole 62 and a lower hole 63 communicating with the inner hole 61 and aligned along the up and down direction Y, and the The size of the upper hole 62 is smaller than the size of the lower hole 63, but in fact the size relationship between the upper hole 62 and the lower hole 63 may not be limited.

The glue removing device 2 includes a hole plug fixture 20, an upper knife mold 30 and a lower knife mold 40.

The hole plug jig 20 includes a body 21 for inserting into the inner hole 61, an upper surface 211 on the body 21 for filling the upper hole 62 of the upper hole 62, and an upper hole plug 22 on the body 21 The lower surface 212 is used to fill the lower hole plug portion 23 of the lower hole 63, one is provided on the upper hole plug portion 22 and extends upward and has an upper bump 24 smaller in size than the upper hole plug portion 22, and one is provided on the The lower hole plug portion 23 extends downward and has a lower protrusion 25 smaller in size than the lower hole plug portion 23, and two guide posts 26 fixed to the main body 21 through the upper and lower direction Y. Each guide post 26 has a fixed section 261 fixed to the main body 21, and an upper guide section 262 and a lower guide section 263 located outside the main body 21.

Referring to FIGS. 5 to 7 and 9, the upper knife mold 30 includes an upper knife seat 31, two upper elastic members 32, an upper movable seat 33, two upper connecting rods 34, an upper driving block 35 and a connecting block 36 .

The upper tool holder 31 has a first base wall 311, a first ring wall 313 extending downward from the periphery of the first base wall 311 and defining a first chamber 312 open below, and a first ring wall 313 corresponding to the The upper hole 62 of the metal tube 60 is provided on the upper knife edge 314 at the lower end of the first ring wall 313, and penetrates the two first through holes 315 of the first base wall 311 along the up and down direction Y, and penetrates the first hole 315 along the up and down direction Y. A base wall 311 is used for the two first guide holes 316 through which the upper guide section 262 of the two guide posts 26 penetrates. The upper blade 314 has the same shape and size as the upper hole 62 of the metal tube 60, and has the function of cutting off the upper hole removing portion 71 of the covering glue 70.

The two upper elastic members 32 are respectively installed in the two first perforations 315 and extend into the first chamber 312. Each upper elastic member 32 has the characteristic of being compressed and can be automatically reset. In this embodiment, The upper elastic member 32 takes a compression spring as an example, but the upper elastic member 32 should not be limited to a compression spring.

The upper movable seat 33 is located on the first base wall 311 of the upper knife seat 31, and has two first through holes 315 arranged along the up-down direction Y and the aperture is smaller than the outer diameter of the two upper elastic members 32 The second perforation 331 and the two second guide holes 332 corresponding to the two first guide holes 316 along the up-down direction Y for the upper guide section 262 of the two guide posts 26 to pass through.

Each upper connecting rod 34 has a head 341, a body 342 extending from the head 341 and having a small outer diameter, and a tail 343 extending from the body 342 and having a reduced outer diameter. The upper connecting rod 34 The body 342 of the upper and lower holes penetrates the second through hole 331 and the upper elastic member 32 located in the first through hole 315 along the up and down direction Y, and the head 341 of the upper connecting rod 34 is blocked in the Above the second through hole 331, the tail 343 of the upper connecting rod 34 extends into the first chamber 312.

The upper driving block 35 is connected to the tail 343 of the two upper connecting rods 34 and is located in the first chamber 312. In this embodiment, the upper driving block 35 and the tail 343 of the two upper connecting rods 34 are used between The connection is completed by means of mutual screw locking, that is, two screw holes are provided on the upper driving block 35, and the tail 343 of the two upper connecting rods 34 is made into a screw, but other means can also be used to make the upper driving block 35 and the The two tail portions 343 are connected. For example, the upper driving block 35 is provided with two connecting holes, and the two connecting holes and the two tail portions 343 are in a tight fit design.

When the upper driving block 35 is connected to the tail portions 343 of the two upper connecting rods 34, the two upper elastic members 32 are limited between the upper movable seat 33 and the upper driving block 35, and the elastic tension causes The upper driving block 35 constantly moves in a direction away from the upper movable seat 33, and keeps a set distance between the upper movable seat 33 and the upper driving block 35. When the upper movable seat 33 and the upper driving block 35 are mutually Approaching to reduce the distance between the two, the two upper elastic members 32 will be compressed and have an automatic recovery elasticity.

Referring to Figures 6, 7, and 10, the connecting block 36 is installed and fixed on the upper movable seat 33 and located between the two upper connecting rods 34 for receiving the lower pressure F of a force applying member (for example, a pressure cylinder) In order to apply the down force F to the upper movable seat 33, it is easy to understand that the connecting block 36 can also be omitted so that the force applying member directly applies the down force F to the upper movable seat 33.

Referring to FIGS. 5, 6, 8 and 9, the lower knife mold 40 includes a lower knife seat 41, two lower elastic members 42, a lower fixing seat 43, two lower connecting rods 44 and a lower driving block 45.

The lower tool holder 41 has a second base wall 411, a second ring wall 413 extending upward from the periphery of the second base wall 411 and defining a second chamber 412 open above, and a second ring wall 413 corresponding to the The lower hole 63 of the metal tube 60 is provided on the lower blade 414 of the upper end of the second ring wall 413, passes through the two third through holes 415 of the second base wall 311 along the up-and-down direction Y, and passes through the first hole along the up-down direction Y. The two base walls 411 are used for the two third guide holes 416 through which the lower guide section 263 of the second guide post 26 penetrates. The shape and size of the lower blade 414 are the same as those of the lower hole 63 of the metal tube 60, and have the function of cutting the lower hole removal portion 72 of the covering glue 70.

The two lower elastic members 42 are respectively installed in the two third through holes 415 and extend into the second chamber 412. Each lower elastic member 42 has the characteristic of being automatically reset after being compressed. In this embodiment, the The lower elastic member 42 takes a compression spring as an example, but the lower elastic member 42 should not be limited to a compression spring.

The lower fixing seat 43 is located under the second base wall 411 of the lower knife seat 41, and has two third through holes 415 arranged along the up-down direction Y and having an aperture smaller than the outer diameter of the two lower elastic members 42. The fourth through hole 431 and the two fourth guide holes 432 corresponding to the two third guide holes 416 along the up-down direction Y for the lower guide section 263 of the two guide posts 26 to penetrate.

Each lower connecting rod 44 has a head 441, a body 442 extending from the head 441 and having a small outer diameter, and a tail 443 extending from the body 442 and having a reduced outer diameter. The lower connecting rod 44 The body 442 penetrates the fourth through hole 431 and the lower elastic member 42 located in the third through hole 415 from bottom to top along the vertical direction Y, and the head 441 of the lower connecting rod 44 is blocked in the first Below the four through holes 431, the tail 443 of the lower connecting rod 44 extends into the second chamber 412.

The lower driving block 45 is connected to the tail 443 of the two lower connecting rods 44 and is located in the second chamber 412. In this embodiment, the lower driving block 45 and the tail 443 of the two lower connecting rods 44 are used The connection is completed by means of screw-locking each other, that is, two screw holes are provided in the lower driving block 45, and the tail 443 of the two lower connecting rods 44 is made into a screw, but other means can also be used to make the lower driving block 45 and the The two tail portions 443 are connected. For example, the lower driving block 45 is provided with two connecting holes, and the two connecting holes and the two tail portions 443 are in a tight fit design.

When the lower driving block 45 is connected to the tail 443 of the two lower connecting rods 44, the two lower elastic members 42 are limited between the lower fixing seat 43 and the lower driving block 45, and the elastic tension causes The lower driving block 45 always moves in a direction away from the lower fixing seat 43, and keeps a fixed distance between the lower fixing seat 43 and the lower driving block 45. When the lower driving block 45 and the lower fixing seat 43 are mutually Approaching to reduce the distance between the two, the two lower elastic members 42 will be compressed to have self-restoring elasticity.

3 to 5, when using, first put the hole plug fixture 20 into the metal tube 60, and place the body 21 in the inner hole 61, and the upper hole plug portion 22 fills the upper hole 62, The lower hole plug portion 23 fills the lower hole 63, and then puts the hole plug fixture 20 and the metal tube 60 in a glue tank (not shown) for a predetermined time, and then takes out the metal tube 60 and the metal tube 60. The hole plug fixture 20 can form the covering glue 70 outside the metal pipe 60 and the hole plug fixture 20, and the metal pipe 60 and the covering glue 70 form the composite pipe 6. At this time, the package The coating 70 has the upper hole removal portion 71 covering the upper hole 62 of the metal tube 60 and the lower hole removal portion 72 covering the lower hole 63.

Referring to Figure 6, Figure 9, Figure 12, in order to facilitate the degumming operation, the degumming device 2 can be installed in a degumming machine (not shown), specifically, the bottom of the lower die 40 is fixed The base 43 is installed and fixed on a workbench 50 of the glue remover, and the workbench 50 has a groove 51 that can accommodate the head 441 of the two lower connecting rods 44 without interfering with the two lower connecting rods 44 Movement in the up-and-down direction Y, and assembling the upper die 30 to an urging member (not shown, for example, a pressure cylinder) of the degumming machine, and located above the lower die 40, and along the up-and-down direction Y is aligned with the lower die 40, and the upper die 30 can be driven by the urging member to move in the up and down direction Y to approach or move away from the lower die 40, and can be applied with the downward force F.

After the upper knife mold 30 and the lower knife mold 40 of the glue removal device 2 are installed in the glue removal machine, the glue removal operation can be started. First, the composite pipe 6 and the hole plug fixture 20 are placed in the On the lower die 40, specifically, the lower protrusion 25 of the hole plug fixture 20 is placed on the lower driving block 45 of the lower die 40, and the lower guide section 263 of the two guide posts 26 Insert into the second and third guide holes 416 of the lower knife seat 41. At this time, the lower knife edge 414 is located directly below the lower hole removal portion 72 and is aligned with the lower hole 63 of the metal tube 60. The upper knife edge 314 is located at the The upper hole removal part 71 is directly above and aligned with the upper hole 62.

10, 11, and 12, then, the urging member drives the upper die 30 to descend in the up and down direction Y to approach the lower die 40 until the upper drive block 35 presses against the hole plug fixture 20 At the same time, the upper guide section 262 of the two guide posts 26 enters the two first guide holes 316 of the upper tool holder 31, and then the force applying member applies the downward pressure F to the connecting block 36, Thereby, the upper movable seat 33, the upper knife seat 31 and the upper driving block 35 can be pushed down, the upper driving block 35 pushes the piston jig 20 and the composite pipe 6 down, and the lower part of the piston jig 20 The convex block 25 pushes the lower driving block 45 and the two connecting rods 44 down, and at the same time, the upper guide section 262 of the two guide posts 26 enters the two first guide holes 316 of the upper knife seat 31 and the upper movable seat 33 In the two second guide holes 332, the upper blade 314 pierces the covering glue 70 to cut off the upper hole removal portion 71, and the lower guide section 263 of the second guide post 26 enters the second fourth guide of the lower fixing seat 43 In the hole 432, the covering glue 70 is pierced by the lower blade 414 to cut the lower hole removal portion 72. At this time, the two upper elastic members 32 and the two lower elastic members 42 are in a compressed state. When the force application member drives the upper die 30 to rise, the downward pressure F is no longer applied to the connecting block 36, and the upper movable seat 33 and the upper knife seat 31 can be restored by the elastic force of the two upper elastic members 32 Automatically reset, the lower driving block 45 and the two lower connecting rods 44 can also be automatically reset by the return elastic force of the two lower elastic members 42 (see FIG. 9).

Referring to Figures 5, 9, and 13, finally, remove the composite pipe 6 and the piston jig 20 from the lower die 40, take out the upper hole removal portion 71 and the lower hole removal portion 72, and then The piston jig 20 is taken out from the lower hole 63 of the metal tube 60, and the piston jig 20 is separated from the composite pipe 6, and the composite of the upper hole removal portion 71 and the lower hole removal portion 72 can be obtained. Pipe fitting 6.

It is worth noting that the glue removing device 2 can omit the connecting block 36, the two upper elastic members 32 and the two lower elastic members 42, the two guide posts 26, the two first guide holes 316, and the two second guides. The holes 332, the two third guide holes 416, and the two fourth guide holes 432 are aligned with each other when the upper die 30 and the lower die 40 are installed in the glue remover. The upper movable seat 33 of the upper knife mold 30 is directly assembled to the force applying member of the degumming machine. When the force applying member applies the downward pressure F to the upper movable seat 33, the upper blade 314, The lower blade 414 cuts off the effect of the upper hole removal portion 71 and the lower hole removal portion 72. Installing the two upper elastic members 32 can produce the effect of automatically resetting the upper movable seat 33 and the upper knife seat 31, and installing the two lower elastic members 42 can produce the lower driving block 45 and the two lower connecting rods 44 The function of automatic reset. By the cooperation of the upper guide section 262 of the two guide posts 26 with the two first guide holes 316 and the two second guide holes 332, the lower guide section 263 of the two guide posts 26 and the two third guide holes 416, The cooperation of the two fourth guide holes 432 can produce the effect of improving the ascending and descending movement stability of the upper die 30, the hole plug fixture 20 and the composite pipe 6.

The manufacturing method of the composite pipe of the present invention includes the following steps:

Step 1: Referring to FIG. 3, prepare the metal tube 60.

Step 2: Referring to Figures 3 and 9, prepare the glue removing device 2, install the lower die 40 on the workbench 50 of the glue remover, and assemble the upper die 30 on the glue remover. And is located directly above the lower die 40, and then the alignment operation of the upper die 30 and the lower die 40 along the up-down direction Y is completed.

Step 3: Put the hole plug fixture 20 of the glue removing device 2 into the metal pipe 60, and place the body 21 of the hole plug fixture 20 in the inner hole 61 of the metal pipe 60, the hole plug fixture 20 The upper hole plug portion 22 and the lower hole plug portion 23 fill the upper hole 62 and the lower hole 63.

Step 4: Put the metal pipe 60 and the hole plug fixture 20 into a glue tank (not shown) for a predetermined time, and then take out the metal pipe 60 and the hole plug fixture 20, the metal pipe 60 and the plug fixture 20 The covering glue 70 is formed outside the hole plug fixture 20, and the metal pipe 60 and the covering glue 70 form the composite pipe 6.

Step 5: Place the composite pipe 6 together with the hole plug fixture 20 on the lower die 40, and place the lower protrusion 25 on the lower driving block 45, and make the lower guide of the two guide posts 26 The segment 263 is inserted into the second and third guide holes 416, so that the lower hole removal portion 72 of the covering glue 70 is located directly above the lower cutting edge 414, and the upper hole removal portion 71 of the covering glue 70 is located on the upper cutting edge. Right below 314.

Step 6: Make the force application member drive the upper die 30 to descend, make the upper driving block 35 press the upper protrusion 24, and then make the force member apply the downward pressure F to the upper die 30 to make the The upper movable seat 33, the upper knife seat 31 and the upper driving block 35 descend, the upper driving block 35 pushes the piston jig 20 and the composite pipe 6 downward, and the lower protrusion 25 of the piston jig 20 pushes the The lower driving block 45 and the two lower connecting rods 44 descend, so that the upper blade 314 can pierce the covering glue 70 to cut off the upper hole removal portion 71, and the covering glue 70 will be blocked by the lower blade 414 The lower hole removal part 72 is cut by piercing.

Step 7: Make the force applying member drive the upper die 30 to rise.

Step 8: Remove the composite pipe 6 and the piston jig 20 from the lower die 40, and remove the upper hole removal portion 71 and the lower hole removal portion 72 from the covering glue 70.

Step 9: Take out the piston jig 20 from the lower hole 63 of the metal tube 60, and remove the piston jig 20 from the composite pipe 6, and the upper hole removal portion 71 and the lower hole removal portion can be obtained 72 of the composite pipe 6.

In summary, the present invention utilizes the glue removing device 2 and the above-mentioned manufacturing steps to mechanically cut the upper hole removal portion 71 and the lower hole removal portion 72 of the coating glue 70, which can improve the work efficiency. The stability of the glue removal quality is controlled to improve the product yield efficiency of the composite pipe fitting 6.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, all simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the content of the patent specification still belong to This invention patent covers the scope.

2: Glue removal device 20: Hole plug fixture 21: body 211: upper surface 212: lower surface 22: Upper hole plug 23: Lower hole plug 24: Upper bump 25: Lower bump 26: guide post 261: fixed segment 262: upper lead 263: Lower lead 30: Upper knife mold 31: Upper knife seat 311: First Basal Wall 312: The first room 313: First Ring Wall 314: Upper Blade 315: first piercing 316: first pilot hole 32: Upper elastic part 33: Upper movable seat 331: second piercing 332: second pilot hole 34: Upper connecting rod 341: Head 342: body 343: tail 35: Upper drive block 36: connection block 40: Lower die 41: Lower knife seat 411: Second Basal Wall 412: The Second Room 413: Second Ring Wall 414: Lower Blade 415: Third Piercing 416: third pilot hole 42: Lower elastic part 43: Lower fixed seat 431: Fourth Piercing 432: Fourth pilot hole 44: Lower connecting rod 441: head 442: body 443: tail 45: Lower drive block 50: workbench 51: Groove 6: Composite pipe fittings 60: Metal tube 61: inner hole 62: upper hole 63: lower hole 70: coating glue 71: upper hole removal part 72: Lower hole removal part X: first direction Y: second direction

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Figure 1 is a combined cross-sectional view of a conventional metal pipe and a hole plug fixture; Figure 2 is a combined cross-sectional view of a conventional composite pipe and a hole plug fixture; 3 is an exploded perspective view of a hole plug fixture suitable for a metal pipe of an embodiment of the glue removing device for composite pipe fittings of the present invention; Figure 4 is a perspective view of the hole plug fixture of this embodiment being applied to a composite pipe; Figure 5 is a cross-sectional view taken from the line Ⅴ-Ⅴ in Figure 4; Figure 6 is a three-dimensional exploded view of the embodiment, showing the state of placing the composite pipe and the hole plug fixture of Figure 4 between an upper die and a lower die; Figure 7 is an exploded perspective view of the upper die of the embodiment; Figure 8 is a perspective exploded view of the lower die of the embodiment; Figure 9 is an incomplete combined cross-sectional view of the embodiment, illustrating the first action state of the glue removal operation; Figure 10 is a view similar to Figure 9 illustrating the second action state of the glue removal operation; Figure 11 is a view similar to Figure 10, illustrating the third action state of the glue removal operation; Figure 12 is a view similar to Figure 11, illustrating the fourth action state of the glue removal operation; and Figure 13 is a cross-sectional view of the composite pipe after degumming.

2: Glue removal device

20: Hole plug fixture

24: Upper bump

25: Lower bump

26: guide post

261: fixed segment

262: upper lead

263: Lower lead

30: Upper knife mold

31: Upper knife seat

311: First Basal Wall

312: The first room

313: First Ring Wall

314: Upper Blade

315: first piercing

316: first pilot hole

32: Upper elastic part

40: Lower die

41: Lower knife seat

411: Second Basal Wall

412: The Second Room

413: Second Ring Wall

414: Lower Blade

415: Third Piercing

416: third pilot hole

42: Lower elastic part

43: Lower fixed seat

431: Fourth Piercing

432: Fourth pilot hole

44: Lower connecting rod

441: head

442: body

443: tail

45: Lower drive block

33: Upper movable seat

331: second piercing

332: second pilot hole

34: Upper connecting rod

341: Head

342: body

343: tail

35: Upper drive block

36: connection block

50: workbench

51: Groove

6: Composite pipe fittings

60: Metal tube

70: coating glue

71: upper hole removal part

72: Lower hole removal part

X: first direction

Y: second direction

Claims (10)

A degumming device for composite pipe fittings. The composite pipe fittings have a metal tube and a covering glue. The metal pipe has an inner hole, and an upper hole and a lower hole communicating with the inner hole. The covering glue has a An upper hole removal part outside the upper hole and a lower hole removal part outside the lower hole. The glue removing device includes: a hole plug jig, including a body for inserting into the inner hole of the metal pipe, An upper hole plug portion located on an upper surface of the main body for filling the upper hole, and a lower hole plug portion located on a lower surface of the main body for filling the lower hole; an upper knife mold including an upper knife seat , An upper movable seat, two upper connecting rods and an upper driving block, the upper knife seat has a first base wall, and one extends downward from the periphery of the first base wall and defines a first chamber open below The first ring wall, and an upper knife edge provided at the lower end of the first ring wall, the upper knife edge is used to cut the upper hole removal part of the coating glue, the upper movable seat is located on the first base of the upper knife seat On the wall, the two upper connecting rods penetrate between the upper movable seat and the first base wall and extend into the first chamber, and the upper driving block is connected to the two upper connecting rods and is located in the first chamber , And can push the hole plug fixture to drive the composite pipe to move down; and the lower cutter mold, including the lower cutter holder, the lower fixing seat, the two lower connecting rods and the lower driving block, the lower cutter holder has a second base Wall, a second ring wall extending upward from the peripheral edge of the second base wall and defining a second chamber open above, and a lower blade provided on the upper end of the second ring wall, the lower blade is used for When the lower hole removal part of the covering glue is cut, the lower fixing seat is located under the second base wall of the lower knife seat, and the two lower connecting rods pass through the lower fixing seat and the Between the second base walls and extend into the second chamber, the lower driving block is connected to the two lower connecting rods and is located in the second chamber, and can be pushed by the hole plug fixture to drive the two lower connecting rods The rod moves down. The glue removing device for a composite pipe according to claim 1, wherein the upper die also includes two upper elastic members, which are respectively sleeved outside the two upper connecting rods and are limited in the upper movable seat and the upper drive Between the blocks, the upper driving block is constantly moved in the direction away from the upper movable seat, and the lower die also includes two lower elastic parts, respectively sleeved outside the two lower connecting rods and limited in the lower fixed seat Between the lower driving block and the lower driving block, the lower driving block is constantly moved in a direction away from the lower fixing base. The glue removing device for a composite pipe according to claim 1 or claim 2, wherein the hole plug fixture further includes two guide posts fixed to the body, and each guide post has a fixed section fixed to the body, And a lower guide section for inserting into the second base wall of the lower knife seat and capable of moving up and down between the second base wall and the lower fixing seat. The glue removing device for a composite pipe according to claim 3, wherein each guide post further has an upper guide section that can move up and down between the first base wall and the upper movable seat. The glue removing device for a composite pipe according to claim 4, wherein the hole plug fixture further includes an upper bump arranged on the upper hole plug portion and having a size smaller than the upper hole plug portion, and a piece arranged on the bottom The hole plug portion has a lower bump with a size smaller than the lower hole plug portion, the upper bump is used to be pushed by the upper driving block, and the lower bump is used to push the lower driving block. The glue removing device for a composite pipe according to claim 2, wherein each upper connecting rod has a head, a body extending from the head and reducing the outer diameter, and a body extending and reducing from the body The body of the upper connecting rod passes through the upper movable seat and the upper elastic member and extends into the first chamber, the head of the upper connecting rod is blocked by the upper movable seat, and the upper connecting rod The tail is connected with the upper driving block. Each lower connecting rod has a head, a body extending from the lower connecting head and reducing the outer diameter, and a body extending from the lower connecting rod and reducing the outer diameter The body of the lower connecting rod passes through the lower fixing seat and the lower elastic member and extends into the second chamber. The head of the lower connecting rod is blocked by the lower fixing seat. The tail is connected with the lower driving block. The glue removing device for a composite pipe according to claim 6, wherein the tail of the upper connecting rod and the upper driving block are locked to each other, and the tail of the lower connecting rod and the lower driving block are locked to each other connection. The glue removing device for a composite pipe according to claim 6, wherein the upper tool holder further has two first perforations penetrating through the first base wall, the two upper elastic members are respectively installed in the two first perforations, the The upper movable seat also has two second perforations corresponding to the two first perforations and having an aperture smaller than the outer diameter of the two upper elastic members. The bodies of the two upper connecting rods are respectively inserted through the two second perforations and the two In the upper elastic member, the lower blade holder further has two third through holes penetrating the second base wall, the two lower elastic members are respectively installed in the second and third through holes, and the lower fixing seat also has a second hole corresponding to the second base wall. Three perforations and two fourth perforations with an aperture smaller than the outer diameter of the two lower elastic members, the body of the two lower connecting rods are respectively inserted in the second fourth perforations and the lower upper elastic member. The glue removing device for a composite pipe according to claim 1, wherein the upper knife seat further includes a connecting block installed and fixed on the upper movable seat and located between the two upper connecting rods. A method for manufacturing a composite pipe, comprising the following steps: (A) preparing a metal pipe with an inner hole, and an upper hole and a lower hole connecting the inner hole; (B) preparation as described in claim 1 The glue removal device of the glue removal device, and the lower fixing seat of the lower knife mold of the glue removal device is installed and fixed on a workbench of a glue remover, and the upper knife mold is assembled to a force applying part of the glue remover , And the upper knife mold is located directly above the lower knife mold; (C) the hole plug fixture is placed in the metal pipe, and the body of the hole plug fixture is located in the inner hole of the metal pipe, the hole The upper hole plug part and the lower hole plug part of the plug fixture are filled with the upper hole and the lower hole; (D) the metal tube and the hole plug fixture are placed in a glue tank for a predetermined time, and then the metal is taken out Tube and the hole plug fixture, the metal tube and the hole plug fixture will form a covering glue, and the metal tube and the covering glue form a composite pipe fitting, the covering glue has a hole located on the upper hole The outer upper hole removal part, and a lower hole removal part located outside the lower hole; (E) Place the composite pipe and the hole plug fixture on the lower die, and make the lower part of the covering glue The hole removal part is located directly above the lower knife edge, and the upper hole removal part of the coating glue is located directly below the upper knife edge; (F) the force applying member drives the upper knife die down, so that the upper drive block presses against the The hole plug fixture, and then the force applying member is forced to apply pressure to the upper die, so that the upper movable seat, the upper cutter seat and the upper driving block are lowered. The upper driving block pushes the piston jig and the composite pipe to descend, and the piston jig pushes the lower driving block and the two lower connecting rods to descend, thereby causing the upper blade to pierce the coating rubber to remove the upper hole Cut off the lower hole removal part by piercing the coating glue by the lower blade; (G) make the force applying member drive the upper knife die up; (H) remove the composite pipe and the piston jig from the The lower die is removed, and the upper hole removal part and the lower hole removal part are taken out of the coating glue; and (I) the piston jig is taken out of the lower hole of the metal pipe, and the piston jig is separated from the The composite pipe is further obtained by cutting off the upper hole removal part and the lower hole removal part.

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