KR20090045667A - Apparatus for grinding a tube - Google Patents

Abstract

Tube grinding device according to the invention the storage unit for receiving the tube; A tube grinding unit disposed in the storage unit and configured to grind an end of the received tube; And disposed in the storage portion, the tube is connected to the opposite side of the grinding portion is configured to remove the foreign matter in the tube configured to remove foreign matter in the tube.

The present invention is to quickly transfer a large amount of the tube so that the grinding operation is performed quickly, to shorten the time of the entire grinding operation, to uniformly grind the end of the tube to improve the finished product quality, increase the productivity, during hydroforming It prevents deformation and breakage of the forming nozzle, enables normal forming work, and lowers the defective rate of the finished product.

Tube, Hydroforming, Grinding, Debris, Air, Burr, Debris, End

Description

Apparatus for grinding a tube

The present invention relates to a tube grinding device, and more particularly, to a tube grinding device that improves work efficiency and improves tube quality by quickly and conveniently removing and grinding burrs and foreign substances, which are rough parts generated during a tube cutting operation. It is about.

In general, the tube is widely used as a raw material of the hydroforming device, which is one of a device for forming a press or tube by plastic working into a desired shape. In particular, the first banded tube is positioned in the mold formed of the upper mold and the lower mold in the hydroforming apparatus, and then pressurized by inserting a high pressure fluid into the tube, so that the side rail of the vehicle and It is used to form body parts such as cross members and the like and exhaust parts such as exhaust manifolds and engine cradles.

1 is a reference diagram showing a picture of a first bent tube, Figure 2a is a block diagram showing a state during a conventional chamfer grinding operation, Figure 2b is a block diagram showing a state after a conventional chamfer grinding operation.

As shown in Fig. 1, a banded tube, which is a raw material that is put into the hydroforming apparatus, including a general tube used for forming a product, is in a cutting state to a desired length. The end A of this cut tube 100 is generally difficult to maintain the original circular cross-sectional shape, and the cut portion of the end has burrs and rough edges which are rough parts.

This part affects the quality of the tube product, and deteriorates the work stability, and as shown in Figs. 2A and 2B, a grinding operation in which burrs are removed and chamfered is essential. The grinding operation is performed by the operator grinding along the circumference of the outer surface and the inner surface end of the tube 100 through the grinding machine (1) equipped with a whetstone, and after the grinding operation the tube 100 by spraying the cleaning liquid or high pressure air The grinding work of grinding the grindstone powder remaining in the c) and the grinding powder of the tube 100 is performed.

However, since the grinding operation of the tube 100 is made by hand, the shape of the cut portion of the tube 100 may not be constant according to the skill of the operator, and an abnormal chamfer angle may occur, and the cutting of the tube 100 may be performed during cutting. It is difficult to restore the cross-sectional shape, it takes a lot of work time, such as the need to remove the powder after grinding, there is a problem that can not meet the delivery time due to the productivity decrease.

In particular, after the tube 100 is placed in a mold in the hydroforming apparatus, when the forming nozzle is inserted into the end of the tube 100, a gap is formed between the end of the tube 100 and the nozzle, so that the high pressure injection liquid does not come into close contact. As a result, normal forming is difficult, such as clogging of the forming nozzle due to leakage or grinding of foreign matter, and the forming nozzle is not drawn into the inside of the tube 100 when the forming nozzle and the tube 100 are coupled to each other. Deformation and breakage of the forming nozzle occurs while colliding with the end edge of the, resulting in a high defect rate of the finished product.

The present invention has been proposed to solve the above problems, an aspect of the present invention is to automatically remove the foreign matter including the burr grinding during the end grinding operation of the tube.

In addition, one aspect of the present invention is to ensure that the shape of the cut portion of the tube is normally uniform at each end grinding operation of each tube, thereby improving the finished product quality of the tube, the purpose is to increase the productivity.

In addition, one aspect of the present invention is to prevent deformation and breakage of the forming nozzle due to collision between the tube and the forming nozzle, especially during hydroforming, and to lower the defective rate of the finished product to ensure normal molding.

Tube grinding device according to the invention the storage unit for receiving the tube; A tube grinding unit disposed in the storage unit and configured to grind an end of the received tube; And a tube debris removal unit disposed in the storage unit and configured to remove foreign substances in the tube while being connected to the opposite side of the grinding unit of the tube.

In addition, the tube grinding apparatus according to the present invention is provided to be movable in the storage portion support plate for supporting a plurality of the laminated tube; A position sensor provided in the storage unit and detecting a position of the support plate; And support plate elevating means for elevating the support plate in accordance with the signal detected from the position sensor.

The tube is preferably made of a material for hydroforming.

The tube grinding unit is a grinding motor provided in the storage unit to generate a grinding drive force; A power transmission means connected to the grinding motor to transfer the grinding driving force; A grinding member which is bound to one end of the received tube and is subjected to a grinding operation by receiving a grinding driving force transmitted from the power transmission means; A pressure plate connected to the power transmission means to move the grinding member to be bound to one end of the tube; And a pressure cylinder provided at the storage unit and connected to the pressure plate to provide a pressing force to the pressure plate.

The grinding member includes an upper grinding member for chamfering an outer end of the accommodated tube; And a lower grinding member for chamfering an inner end of the accommodated tube.

The lower grinding member is preferably a conical member having a diameter larger than the inner diameter of the accommodated tube so as to be in close contact with one end of the received tube.

The tube debris removing unit is provided in the storage unit is an air tube into which the high pressure air flows; And an injector coupled to communicate with the air tube and coupled to the other end of the accommodated tube to inject high pressure air, and the pressure plate is connected to the air tube to connect the injector by the pressure cylinder. It is characterized in that to move to bind to the other end of the tube.

Preferably, the injector is a conical member having a diameter larger than the inner diameter of the accommodated tube so as to be in close contact with the other end of the received tube.

In addition, the tube grinding apparatus according to the present invention comprises a frame installed on the ground to be located in a higher phase than the storage; A feed force generating means provided in the frame to generate a feed power; A conveying body provided in the frame and conveyed in one direction by receiving a conveying power provided by the conveying force generating means; Lifting force generating means connected to the transfer body to generate lifting power; An elevating plate provided on the conveying member so as to be capable of elevating in an up and down direction and being elevated by receiving the elevating power; Tongs formed on the lifting plate and winding the tube; And a transfer part connected to the lifting plate and the forceps, the winding cylinder configured to adjust winding of the forceps.

One aspect of the present invention is provided with a transfer unit for automatically transferring the tube to be ground to the storage unit, eliminating the hassle of moving the tube one by one, there is an effect that the grinding operation is carried out quickly by transferring the tube in large quantities. .

In addition, one aspect of the present invention has a grinding portion and a foreign material removal portion built in the storage portion, thereby quickly grinding the end of the tube and at the same time to remove foreign substances, thereby reducing the time of the entire grinding operation, the end of the tube By uniformly grinding the improved product quality, there is an effect that can increase the productivity.

In addition, one aspect of the present invention is fixed to the grinding portion for performing the grinding operation by the grinding wheel larger than the inner diameter of the tube in the storage portion, thereby restoring the end of the tube deformed by cutting close to the circular, thereby hydroforming It prevents the collision between the tube and the forming nozzle at the time of preventing deformation and breakage of the forming nozzle, the normal forming work is performed, it is effective to reduce the defective rate of the finished product.

Hereinafter, preferred embodiments of the present invention will be described in detail with the accompanying drawings.

3 is a perspective view of the tube grinding apparatus according to the present invention.

As shown in Figure 3, the tube grinding apparatus 50 according to the present invention includes a conveying part 10 for conveying the tube 100; A storage unit 20 for receiving the tube 100 transferred by the transfer unit 10; A tube grinding unit 30 disposed in the storage unit 20 and configured to grind an end of the received tube 100; And disposed in the storage portion 20, the tube 100 is connected to the opposite side of the grinding portion and comprises a foreign material removal unit 40 configured to remove foreign substances in the tube (100).

Figure 4a is a cross-sectional view showing a state before the operation of the transfer unit along the line AA 'of Figure 3, Figure 4b is a cross-sectional view showing a state during operation of the transfer portion along the line A-A' of FIG.

As shown in Figs. 3, 4A, and 4B, the transfer part 10 is positioned at a higher phase than the storage part 20 so that the tube 100 can be transported and loaded into the storage part 20. A frame 19 installed on the top; A feed force generating means (11) provided in the frame (19) for generating a feed force; A conveying body (15b) provided in the frame (19) to receive the conveying power provided by the conveying force generating means (11) and conveyed in one direction; Lifting force generating means (14) connected to the transfer member (15b) to generate lifting power; An elevating plate 16 provided to be capable of elevating the conveying body 15b in an up and down direction and being elevated by receiving the elevating power; A forceps (17) formed at a lower portion of the elevating plate (16) and winding the tube (100); And a winding cylinder 18 connected to the elevating plate 16 and the tongs 17 to adjust winding of the tongs 17.

In this case, a plurality of winding cylinders 18 may be formed and connected to both sides of the tongs 17. When a single number is formed as shown in the drawing, a link device (not shown) is formed in the tongs 17 to wind up the cylinder. The operation of 18 allows the tube 100 to be picked up by the tongs 17.

The conveying force generating means 11 is provided on both sides of the frame 19 so as to be rotatable and connected to an end of the conveying shaft 12a and a conveying shaft 12a having a thread formed on the outer side thereof, and the conveying shaft 12a. It includes a transfer motor 12b for rotating. Accordingly, the conveying member 15b is slidable in the longitudinal direction of the conveying shaft 12a via the conveying port 15a connected to the conveying shaft 12a.

The lifting force generating means 14 is a hydraulic cylinder or a lifting power generator in which a lifting motor (not shown) and a reduction gear (not shown) are combined therein, and a shaft 14a connected thereto is coupled to the lifting plate 16. The elevating plate 16 is capable of elevating in the vertical direction. At this time, the guide shaft 13 is formed on the elevating plate 16 to penetrate the conveying member 15b to guide the elevating plate 16 to be able to elevate stably.

In addition, although not shown, the conveying unit 10 is positioned on the frame 19 so that the conveying member 15b may be conveyed in the width direction of the conveying shaft 12a, and conveys the conveying member 15b. A separate feed force generating means for feeding in the width direction of 12a may be provided.

On the other hand, as shown in Figure 3, the storage unit 20 is provided to be elevated in the interior to support the tube 100 while being elevated along the loading groove of the tube 100 so that the plurality of tubes 100 are stacked The support plate 22, which is provided on one side of the storage unit 20, the plurality of proximity position sensor 21 for detecting the position of the support plate 22 and the signal detected from the position sensor 21 A support plate lifting means 24 for elevating the support plate 22 is provided.

At this time, the tube 100 may have a variety of shapes, but in the present embodiment has a 'U' shape as the material that the hydroforming operation is made, the loading groove corresponding to the shape of the inside of the storage unit 20 Is formed.

The support plate lifting means 24 is a hydraulic cylinder or a lifting power generator combined with a lifting motor (not shown) and a reduction gear (not shown) therein, at the position of the support plate 22 detected from the position sensor 21. The support plate 22 is raised and lowered so that the grinding operation is performed.

5A is a cross-sectional view showing a pre-work state of the grinding part along the line B-B 'of FIG. 3, and FIG. 5B is a cross-sectional view showing the state of the grinding part along the line B-B' of FIG.

5A and 5B, the tube grinding portion 30 includes a grinding motor 31 provided in the storage portion 20 to generate a grinding driving force; A power transmission means connected to the grinding motor 31 to transmit the grinding driving force; A grinding member (35, 36) which is attached to one end of the received tube (100) and receives a grinding driving force transmitted from the power transmission means to perform a grinding operation; A pressure plate (37) connected to the power transmission means to move the grinding members (35, 36) to be bound to one end of the tube (100); And a pressure cylinder 33 provided on the storage part 20 and connected to the pressure plate 37 to provide a pressing force to the pressure plate 37.

The power transmission means includes a reduction gear 34 and a shaft connected to the reduction gear 34, and is connected coaxially with the shaft of the grinding motor 31 to transmit the driving force to the grinding members 35 and 36. do. At this time, while transmitting the grinding driving force of the grinding motor 31 to the grinding member (35, 36) so that the grinding member (35, 36) is moved forward and backward by the pressure plate 37 to the tube 100 side. A pressure ring 32 which is movable in the axial direction is provided at the lower end of the pressure plate 37.

The grinding members 35 and 36 preferably upper grinding members 35 chamfering the outer one end of the accommodated tube 100 so as to simultaneously grind the outer and inner one end of the tube 100 located at a predetermined height. And a lower grinding member 36 chamfering an inner end of the accommodated tube 100 adjacent to the upper grinding member 35.

At this time, the lower grinding member 36 has a conical shape having a diameter larger than the inner diameter of the accommodated tube 100 to be in close contact with one end of the accommodated tube 100 without having to grind along the circumference once The grinding operation is performed by the grinding rotation in the fixed position, the working time is reduced, and the end of the deformed tube 100 is returned to the circular shape.

FIG. 6A is a cross-sectional view showing a state before a foreign material removing unit according to the CC ′ line of FIG. 3, and FIG. 6B is a cross-sectional view showing a state of the foreign material removing unit according to the CC ′ line of FIG. 3 during operation. Sectional drawing which showed the tube loading state in the storage part of the grinding apparatus which concerns on this invention.

As shown in Figure 6a and 6b, the tube foreign matter removing unit 40 is provided in the storage unit 20, the air tube 41 and the air tube 41 is introduced into the high-pressure air supplied from the outside or inside It is coupled to communicate with and is coupled to the other end of the accommodated tube 100 includes an injector 44 for injecting high-pressure air,

The injector 44 includes an air nozzle 45a communicating with the air pipe 41 and a plurality of injection paths 45b for injecting high pressure air therein.

At this time, the injecting member 44 preferably has a conical shape having a diameter larger than the inner diameter of the accommodated tube 100 so as to be in close contact with the other end of the accommodated tube 100 so that high pressure air is introduced into the tube 100. Allow inflow.

At this time, the pressure plate 37 is slidably connected to the air pipe 41 fixed to the storage unit 20 so that the injector 44 can be moved forward and backward toward the tube 100 side. A pressure ring 42 is provided at the lower end of the pressure plate 37. Accordingly, the pressure plate 37 may move the injector 44 by the pressure cylinder 33 to be bound to the other end of the tube 100.

7 is a cross-sectional view showing the tube loading state in the storage unit of the grinding apparatus according to the present invention, showing a state in which the soft support 101 is loaded in the storage unit 20 interposed in the neighboring tube 100.

Referring to the operation of the tube grinding device 50 according to the present invention made of such a component as follows.

First, the tongs 17 are moved to the position of the tube 100 by the transfer force generating means 11 in order to transfer the tube 100 placed on the workable place of the transfer unit 10 to the storage unit 20. The elevating plate 16 is lowered by the elevating force generating means 14 to wind the tube 100, and then the tube 100 is wound by the operation of the winding cylinder 18 and the tongs 17.

Next, after elevating the elevating plate 16, the tube 100 is moved to the upper side of the storage unit 20, the elevating plate 16 is lowered again by the operation of the elevating force generating means 14, The tube 100 is loaded into the storage unit 20 by the winding release of the forceps 17 connected thereto.

While repeating the above process, the tube 100 is stacked a plurality of the support 101.

As described above, the plurality of stacked tubes 100 are supported by the support plate lifting means 24 controlled by a control unit (not shown) according to the position of the support plate 22 detected by the position sensor 21 to allow the tube grinding unit 30 to operate. It is located in the same phase as the lower grinding member 36 of the). Thereafter, the pressure plate 37 is advanced toward the tube 100 by the pressure cylinder 33 so that the grinding members 35 and 36 and the spraying body 44 are in close contact with the ends of the tube 100, respectively.

Next, one end of the tube 100 is rotated and ground by the grinding motor 31 while being slipped while being sandwiched between the upper grinding member 35 and the lower grinding member 36, and the other end of the tube 100. The high pressure air is injected into the tube 100 by the injector 44 in close contact with the injector 44 to remove foreign matters that are ground in the tube 100.

At this time, through the fine operation of the pressure cylinder 33, it is possible to finely control the forward and backward of the grinding members (35, 36) to control the removal or chamfering of the burr formed at the end of the tube (100).

Thereafter, the tube 100 after the grinding operation is completed may be transferred to the outside of the storage unit 20 by the forceps 17 or the manpower, and the grinding operation of the next tube 100 is successively performed by the raising of the support plate 22. Is done.

As such, the tube grinding apparatus 50 according to the present invention improves the reliability of the finished tube by quickly and completely removing burrs and foreign substances formed at the end of the tube, and removing foreign substances in the tube used for hydroforming, Prevents clogging of the forming nozzle, prevents deformation and breakage of the hydroforming nozzle, and normal forming operation is performed.

On the other hand, the tube grinding unit 30 and the tube foreign matter removing unit 40 may be provided in a plurality corresponding to the position of the loaded tube 100, the tube foreign material removing unit 40 is a method of injecting high pressure air It is possible to operate and change by removing the foreign matter by suctioning the air, and the tube grinding portion 30 and the tube foreign matter removing portion 40 are paired with the tube 100 so that both ends of the tube 100 are simultaneously ground. It is possible to change the design can be provided together at one end of the).

In addition, in the embodiment of the present invention as described above, the transfer unit 10 may be omitted by replacing the transfer unit 10 by an operator by carrying the tube 100 in the storage unit 20 by manpower. .

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited thereto and is intended by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of equivalents of the claims to be described.

1 is a reference diagram showing a photograph of a primary banded tube.

2A is a configuration diagram showing a state in a conventional chamfer grinding operation.

Figure 2b is a block diagram showing a state after the conventional chamfer grinding operation.

Figure 3 is a perspective view of the tube grinding device according to the present invention.

Figure 4a is a cross-sectional view showing a pre-operation state of the transfer unit along the line AA 'of FIG.

4B is a cross-sectional view showing a state in operation of the transfer unit along the line AA ′ of FIG. 3;

FIG. 5A is a cross-sectional view showing a state before operation of the grinding part along the line B-B 'of FIG. 3; FIG.

FIG. 5B is a cross-sectional view showing a state in operation of the grinding part along the line B-B 'of FIG.

Figure 6a is a cross-sectional view showing a state before the operation of the foreign material removal unit along line C-C 'of FIG.

Figure 6b is a cross-sectional view showing the state of operation of the foreign material removal unit along the line CC 'of FIG.

Figure 7 is a cross-sectional view showing the tube loading state in the storage portion of the grinding apparatus according to the present invention.

<Description of the symbols for the main parts of the drawings>

1: grinding machine 10: transfer unit

11: feed force generating means 12a: feed shaft

12b: Feed motor 13: Guide shaft

14: lifting force generating means 15a: transfer port

15b: conveying member 16: lifting plate

17: tongs 18: winding cylinder

19 frame 20 storage

30: tube grinding part 31: grinding motor

32, 42: pressure ring 33: pressure cylinder

34: reduction gear 35: upper grinding member

36: lower grinding member 37: pressure plate

40: debris removal tube 41: air tube

44: injector 50: tube grinding device

100: tube 101: support

Claims (9)

A storage unit for receiving the tube; A tube grinding unit disposed in the storage unit and configured to grind an end of the received tube; And Is disposed in the storage portion, the tube is foreign matter removal unit configured to remove foreign substances in the tube while being connected to the opposite side of the tube grinding portion Tube grinding device comprising a. The method of claim 1, A support plate provided to be movable up and down in the storage part to support the plurality of tubes to be stacked; A position sensor provided in the storage unit and detecting a position of the support plate; And Support plate lifting means for lifting the support plate in accordance with the signal detected from the position sensor Tube grinding device further comprising. The method of claim 1, The tube is characterized in that made of a material for hydroforming Tube grinding device. The method of claim 1, The tube grinding portion A grinding motor provided in the storage unit to generate a grinding driving force; A power transmission means connected to the grinding motor to transfer the grinding driving force; A grinding member which is bound to one end of the received tube and is subjected to a grinding operation by receiving a grinding driving force transmitted from the power transmission means; A pressure plate connected to the power transmission means to move the grinding member to be bound to one end of the tube; And The pressure cylinder is provided in the storage unit, is connected to the pressure plate to provide a pressing force to the pressure plate Tube grinding device comprising a. The method of claim 4, wherein The grinding member is An upper grinding member for chamfering an outer end of the accommodated tube; And A lower grinding member for chamfering an inner end of the accommodated tube Tube grinding device comprising a. The method of claim 5, The lower grinding member is a conical member having a diameter larger than the inner diameter of the accommodated tube to be in close contact with one end of the received tube. Tube grinding device. The method of claim 4, wherein The tube foreign material removing unit An air pipe provided in the storage unit and into which high pressure air is introduced; And It is coupled to communicate with the air pipe, and is coupled to the other end of the accommodated tube includes an injector for injecting high pressure air, The pressure plate is connected to the air pipe, characterized in that for moving the injector to be bound to the other end of the tube by the pressure cylinder Tube grinding device. The method of claim 7, wherein The injector is a conical member having a diameter larger than the inner diameter of the accommodated tube to be in close contact with the other end of the received tube. Tube grinding device. The method according to any one of claims 1 to 8, A frame installed on the ground to be positioned at a higher phase than the storage unit; A feed force generating means provided in the frame to generate a feed power; A conveying body provided in the frame and conveyed in one direction by receiving a conveying power provided by the conveying force generating means; Lifting force generating means connected to the transfer body to generate lifting power; An elevating plate provided on the conveying member so as to be capable of elevating in an up and down direction and being elevated by receiving the elevating power; Tongs formed on the lifting plate and winding the tube; And A transfer part including a winding cylinder connected to the lifting plate and the forceps to adjust the winding of the forceps; Tube grinding device further comprises.

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