TWI540011B - To open the door of the discharge processing machine tank - Google Patents

Description

EDM machine tank with open and closed doors

The invention relates to an electric discharge machine, in particular to an electric discharge machine liquid tank which is opened and closed by a double door.

The electric discharge machine uses a thin metal wire such as a copper wire or a tungsten wire which is continuously fed as an electrode, and moves it under tension, and is supplemented with deionized water or other insulating working fluid as a dielectric to make it electrically conductive. A discharge ablation phenomenon occurs between the workpiece and the electrode, and a machine tool that processes the workpiece into an arbitrary contour shape with high precision by a discharge method is formed. In order to be able to immerse the workpiece in the machining fluid, the electric discharge machine needs to be provided with a liquid groove having a lateral opening, and a door for opening and closing the lateral opening, which can be conveniently operated by the operator by opening the door. The action of loading and unloading.

A design for opening the door is a pivoting group pivoted between the door and the liquid tank, and a fastener group fixed to the other side of the door relative to the pivoting group Therefore, when the user wants to replace the workpiece, the fastener group needs to be opened first, and then the door is opened by the pivoting group. Such a design not only requires a large amount of space for work, but is also inconvenient to use.

In order to improve the above shortcomings, the applicant is new in the Republic of China. Patent No. M320450 discloses the creation of a middle door: a small sink door is additionally installed on the door, so that when the user replaces the workpiece, the replacement can be achieved only by opening the small sink door. However, such a design still needs to open the door when replacing a large workpiece, so the net space required for the operation cannot be effectively reduced.

For example, the link opening and closing mechanism disclosed in the Republic of China invention patent Nos. I269682 and I337908 respectively, the screw lift door disclosed in the new patent No. 232302, the weight assisted opening disclosed in No. 331207, disclosed in M290787 The creation of a single door panel such as a shear-type connecting rod lifting gate can lift and lower the door with different driving methods, and thereby reduce the net space required for opening, but the following problems cannot be improved:

First, the opening and closing time is longer: When the liquid tank needs to be equipped with a large door for large workpieces, the weight and inertia of the door will increase accordingly, and in order to avoid impact damage to surrounding components, The door needs to be transferred at a lower speed, and when the movement stroke is long, this will cause a disadvantage of a slower opening and closing speed.

Second, the height of the machine can not be reduced: because the processing machine needs to reserve space under the space to accommodate the opening of the door, therefore, when the liquid tank has a higher tank for large workpieces, the corresponding gear is accommodated. The space of the door also needs to be increased. As a result, the increase in the height of the machine will result in an increase in the center of gravity, resulting in structural instability and vibration, which affects the processing stability. In addition, the height of the bed on which the workpiece is placed is also bound to be increased, which increases the inconvenience of the user to load and unload.

Therefore, the object of the present invention is to provide an EDM liquid tank which can be quickly opened and closed, and has a low stacking height, can reduce the height of the bed, improve the processing stability, and facilitate the replacement of the workpiece by the door opening and closing.

Therefore, the electric discharge machine liquid tank of the invention with the double door opening and closing includes a tank body, a multi-door unit, a driving unit, a transmission unit, and a sealing unit.

The trough body defines a liquid storage space and includes a front side wall having an opening that communicates with the liquid storage space.

The multi-door unit is connected to the front side wall of the trough body, and comprises a stack of overlapping door assemblies, and a door assembly. The door unit can be lifted and lowered between a closed position and an open position relative to the trough body. Moving, in the closed position, the upper and lower door assemblies close the opening, and the upper door combination is higher than the lower door combination, in the open position, the upper and lower door assemblies are away from the opening, and the opening is opened .

The driving unit is connected to the tank body and includes a driving member capable of driving the door unit.

The transmission unit is disposed between the multiple door unit and the driving unit, and the moving door unit is movable between the open position and the closed position by the driving component of the driving unit.

The sealing unit is located between the front side wall of the trough and the multiple door unit.

The utility model has the advantages that the upper and lower door combinations of the double door unit can reduce the time required for lifting and lowering, and can utilize the overlapping features to effectively reduce the space required for the stacking, thereby effectively reducing the bed table. height, Achieve the advantages of improved processing stability and easy replacement of workpieces.

100‧‧‧Electric discharge machine

1‧‧‧ tank

11‧‧‧Liquid space

12‧‧‧ front side wall

121‧‧‧ openings

13‧‧‧Left wall

14‧‧‧ right side wall

15‧‧‧Water tray

2‧‧‧Residual unit

21‧‧‧Next door combination

211‧‧‧Lower door

212‧‧‧Lower door connector

213‧‧‧ front baffle

22‧‧‧Home combination

221‧‧‧Home panel

222‧‧‧Translucent sealing board

223‧‧‧Home connection

225‧‧‧Window

3‧‧‧ rail unit

31‧‧‧Lower door rail

32‧‧‧Lower door guides

33‧‧‧door rail

34‧‧‧Home guides

4‧‧‧ drive unit

41‧‧‧ drive parts

42‧‧‧Reducer

43‧‧‧Bevel gear

44‧‧‧Output wheel

5‧‧‧Transmission unit

51‧‧‧Lower door drive set

511‧‧‧First transmission wheel

512‧‧‧First belt

513‧‧‧First idler

52‧‧‧Home Drives

521‧‧‧second drive wheel

522‧‧‧Second belt

523‧‧‧Second idler

53‧‧‧ long axis

6‧‧‧Sensor unit

61‧‧‧Sense block

62‧‧‧Closed sensing parts

63‧‧‧Open sensing parts

7‧‧‧ Sealing unit

71‧‧‧ Lower door seals

72‧‧‧Home seals

Other features and advantages of the present invention will be apparent from the embodiments of the present invention. FIG. 1 is an exploded perspective view showing a composite door unit in a closed position in accordance with a preferred embodiment of the present invention. Figure 2 is a view similar to Figure 1, illustrating the state in which the door unit is in an open position, and Figure 3 is an exploded view showing the relative positional relationship between the combination of the upper and lower doors and a slot; 4 is a perspective assembled view illustrating the connection relationship between the lower door assembly and the lower door drive group of a transmission unit; FIG. 5 is a perspective assembled view illustrating the connection relationship between the upper door combination and a door drive group of the transmission unit; 6 is a partial cross-sectional view showing the relative positional relationship between the multiple door unit and a rail unit and a driving unit; FIG. 7 is a perspective assembled view illustrating the assembly relationship of the components of the driving unit; FIG. The relative positional relationship between the driving unit and a transmission unit is illustrated; FIG. 9 is a partial schematic view showing a state in which the sensing unit is located at the closed position; and FIG. 10 is a partial schematic view Description of the state of the sensing unit is in the open position.

As shown in FIG. 1 , FIG. 2 and FIG. 3 , the preferred embodiment of the EDM liquid tank of the present invention is applied to an electric discharge machine 100 and includes a trough body 1 and a complex door. The unit 2, a rail unit 3, a driving unit 4, a transmission unit 5, a sensing unit 6, and a sealing unit 7.

The tank body 1 defines a liquid storage space 11 and includes a front side wall 12 having an opening 121 communicating with the liquid storage space 11, and a left side wall 13 respectively connected to the two side edges of the front side wall 12. And a right side wall 14 and a water receiving tray 15 disposed under the front side wall 12.

The door unit 2 is connected to the front side wall 12 of the tank body 1, and includes a stack of door assemblies 21 and a door assembly 22. The door unit 2 can be moved up and down relative to the tank body 1 in a closed position as shown in FIG. 1 and an open position as shown in FIG. 2, in the closed position, the upper and lower door combinations The opening 121 is closed, and the upper door assembly 22 is higher than the lower door assembly 21, and in the open position, the upper and lower door assemblies are away from the opening 121, and the opening 121 is opened.

In the preferred embodiment, the number of the door combinations of the multiple door unit is two. The number of such door combinations can also be three or more.

As shown in FIG. 4 , the lower door assembly 21 has a U-shaped lower door panel 211 , two lower door connecting members 212 disposed opposite to the lower door panel 211 and connected to the transmission unit 5 , and a lower door panel 211 . Front bezel 213 spaced apart. The lower door panel 211 and the front bezel 213 surround a space for the upper door assembly 22 to be accommodated when the opening position is defined.

As shown in FIG. 5, the upper door assembly 22 has a window 225. The upper door panel 221, a light-tight sealing plate 222 that closes the window 225, and two upper door connectors 223 that are oppositely disposed on the upper door panel 221 and connected to the transmission unit 5.

As shown in FIG. 3 and FIG. 6, the rail unit 3 includes two points. The lower door guide 31 that is symmetrically disposed on the left and right side walls, the lower door guide 32 that is disposed on the lower door plate 211, and the upper door guide 33 that is symmetrically disposed on the lower door plate 211 And a plurality of upper door guides 34 disposed on the upper door panel 221, such as the upper door guide 33. The lower door assembly 32 can be moved up and down by the lower door guide 32 and the lower door guides 32. The upper door assembly 33 and the upper door guides 34 can be used for the upper door assembly 22 Lift and move.

In the preferred embodiment, the guide rails of the rail unit 3 For the C-shaped long groove, the guiding members are rollers, and can be respectively transferred and transferred in the corresponding guide rails. The rail unit 3 can also be an element that can achieve linear motion using linear slides, ball splines, or linear bearings.

As shown in FIG. 7, the driving unit 4 is disposed on the slot body 1. The left side wall 13 includes a driving member 41 capable of driving the multiple door unit 2, a speed reducer 42 connected to the driving member 41, two bevel gears 43 disposed perpendicularly to each other, and a transmission unit 5 The output of the wheel 44.

In a preferred embodiment of the invention, the drive member 41 is a horse Da.

One of the bevel gears 43 is disposed on the reducer 42 The other helical gear 43 is connected to the left side wall 13 of the trough body 1 and is coaxially and coaxially connected with the output wheel 44. With the bevel gears 43 The power output direction of the driving member 41 can be vertically turned to achieve the advantage of space saving. The drive unit 4 of the preferred embodiment of the present invention can also include the bevel gears 43. In this case, the reducer 42 can be a right angle reducer, and the output wheel 44 is directly connected to the reducer 42. This also saves space.

As shown in FIG. 8 and FIG. 9, the transmission unit 5 is connected and disposed on The two-door transmission unit 51 and the two upper door transmission groups 52 respectively disposed symmetrically on the left and right side walls, and a long shaft 53 located below the front side wall 12, and the driving unit 4 (As shown in Figure 3).

The lower door transmission groups 51 respectively have a pair of upper and lower intervals a first transmission wheel 511, a first transmission belt 512 connected between the first transmission wheels 511 and connected to the lower door connecting member 212 of the lower door assembly 21, and an adjustable first transmission belt 512 The first idler pulley 513 of tension. The first transmission belt 512 located on the left side wall 13 is also wound around the output wheel 44 of the driving unit 4 .

The upper door drive groups 52 respectively have a pair of upper and lower intervals a second transmission wheel 521, a second transmission belt 522 disposed between the second transmission wheels 521 and connected to the upper door connecting member 223 of the upper door assembly 22, and a tension that can adjust the second transmission belt 522 The second idler 523.

In the preferred embodiment of the present invention, located on the upper side of the trough 1 The first transmission wheels 511 are coaxial and co-operating with the second transmission wheels 521, respectively. The first transmission wheel 511 located on the lower side of the tank body 1 and the second transmission wheels 521 are respectively sleeved on the long shaft 53 (as shown in FIG. 6), and are sequentially second to right and right. Transmission wheel 521, first transmission wheel 511, first transmission wheel 511, and a second transmission wheel 521, wherein the first two are located on the left side wall 13, and the latter two are located on the right side wall 14. The diameters of the second transmission wheels 521 are respectively larger than the diameters of the first transmission wheels 511, so that the moving speed and the moving stroke of the second transmission belt 521 are both greater than the moving speed and the moving stroke of the first transmission belt 511.

When the driving member 41 of the driving unit 4 indirectly drives the output wheel At 44 o'clock, the first belt 512 on the left side wall 13 is driven, and the first transmission wheels 511 located on the left side wall 13 and connected to the first belt 511 are synchronously driven. Moreover, the first transmission wheels 511 and the second transmission wheels 521 disposed on the lower side of the tank body 1 and the long shafts 53 are coaxially and co-located with each other, and the other transmission belts are also synchronously driven to rotate.

At this time, because the lower door assembly 21 is connected by the lower door 212 is connected to the first belt 511, and the upper door assembly 22 is connected to the second belt 522 by the upper door connecting member 223, and the moving speed and the moving stroke of the second belt 522 are greater than the first The moving speed and the moving stroke of the belt 512 will cause the upper door assembly 22 to move at a speed not lower than the lower door combination 21.

In the preferred embodiment of the invention, the transmission unit 5 can also The long axis 53 is not included. At this time, the number of the driving units 4 is two, and the driving units 4 are respectively disposed on the left and right side walls, and respectively drive the transmission groups (not shown). Alternatively, the transmission unit 5 is disposed only on the left side wall 13 and the long shaft 53 is not provided (as shown in FIG. 3), and the multi-door unit 2 is driven by a single side.

In the preferred embodiment of the present invention, the drive unit 4 is out The force wheel 44 and the transmission wheels of the transmission unit 5 are sprocket wheels, and the transmission belts are chains. The output wheel of the drive unit 4 and the drive wheels of the transmission unit 5 can also be pulleys. At this time, the transmission belts are belts.

As shown in FIG. 9 and FIG. 10, the sensing unit 6 includes a sensing Block 61, and an opening sensing member 62 and a closing sensing member 63 respectively disposed on the right side wall 14 of the trough body 1.

The sensing block 61 is connected to the lower door of the lower door assembly 21 Connector 212. When the door unit 2 is in the closed position, the sensing block 61 corresponds to the closing sensor 62. When the door unit 2 is in the open position, the sensing block 61 corresponds to the opening sensor 63. With the sensing members, the driving unit 4 stop signal can be provided in the open position and the closed position, respectively.

In the preferred embodiment, the sensing members are micro switches. The sensing members can also be non-contact switches, such as optical proximity switches or reed switches.

As shown in FIG. 3 and FIG. 6, the sealing unit 7 includes the following Door seal 71, and an upper door seal 72. The lower door seal 71 is disposed on the trough body 1 and located between the front side wall 12 of the trough body 1 and the lower door panel 211. The upper door seal 72 is disposed on the lower door panel 211 and located between the lower door panel 211 and the upper door panel.

The drive unit 5 can be driven by the drive unit 4 The lower door assembly 21 of the door unit 2 and the upper door assembly 22 move between the open position and the closed position. At this time, if the overall weight of the multiple door unit 2 is equal to the weight of a conventional single door panel, due to the complex door unit 2 The center of gravity is shorter when the opening position and the closed position are moved, so that the effect of shortening the opening time can be achieved.

In the closed position, the driving unit 4 indirectly drives the upper side, The lower door assemblies respectively rise along the rails and close the opening 121 of the front side wall 12. At this time, the sealing unit 7 can seal the tank body 1 and the door unit 2 in a watertight manner so that the working fluid in the liquid storage space 11 does not leak out.

In the open position, the driving unit 4 indirectly drives the upper side, The lower door assemblies are respectively lowered along the guide rails, and the opening 121 of the front side wall 12 is opened for the upper and lower workpieces. The water receiving tray 15 disposed under the tank body 1 can hold the working fluid dropped from the liquid storage space 11. By combining the upper and lower doors stacked front and rear, in addition to effectively reducing the space required for folding, the height of the bed can also be reduced.

In summary, the upper and lower door combinations of the multiple door unit 2 In addition to being able to quickly open and close, the height of the bed can be effectively reduced, thereby achieving the advantages of processing stability and convenient replacement of the workpiece, and the object of the present invention can be achieved.

However, the above is only the preferred embodiment of the present invention. The scope of the present invention is not limited thereto, and the simple equivalent changes and modifications made by the present invention in the scope of the present invention are still within the scope of the present invention.

100‧‧‧Electric discharge machine

1‧‧‧ tank

11‧‧‧Liquid space

12‧‧‧ front side wall

121‧‧‧ openings

13‧‧‧Left wall

14‧‧‧ right side wall

15‧‧‧Water tray

2‧‧‧Residual unit

21‧‧‧Next door combination

22‧‧‧Home combination

3‧‧‧ rail unit

31‧‧‧Lower door rail

32‧‧‧Lower door guides

33‧‧‧door rail

34‧‧‧Home guides

4‧‧‧ drive unit

5‧‧‧Transmission unit

7‧‧‧ Sealing unit

71‧‧‧ Lower door seals

72‧‧‧Home seals

Claims (6)

An electric discharge machine fluid tank that opens and closes with a double door, comprising: a tank body defining a liquid storage space, and including a front side wall having an opening, the opening being connected to the liquid storage space; a unit, the connection is disposed on the front side wall of the trough body, and includes a stack of upper door assemblies, and a door assembly, the lower door assembly has a lower door panel, and a lower door connector disposed on the lower door panel, the door combination Having an upper door panel and an upper door connecting member disposed on the upper door panel, the multiple door unit is movable up and down relative to the slot body between an open position and a closed position, and in the open position, the upper door The lower door assembly is away from the opening and opens the opening. In the closed position, the upper and lower door assemblies close the opening, and the upper door combination is higher than the lower door combination; a rail unit includes a slot disposed in the slot a lower door rail for the lower door assembly to move up and down, and a door guide rail disposed on the lower door combination for lifting and moving the upper door combination; a driving unit connected to the slot body and including a driveable a driving unit of the door unit; a transmission unit is disposed between the door unit and the driving unit, and the driving unit of the driving unit enables the door unit to be in the open position and the closed position Moving between, the transmission unit includes a lower door connecting member lower door driving group connected to the lower door combination, and a top door connecting member upper door driving group connected to the upper door combination, the lower door transmission group has a pair of upper and lower interval settings a first transmission wheel of the trough body, and a first transmission belt wound between the first transmission wheels, the first transmission belt a lower door connecting member connecting the lower door assembly, the upper door transmission group having a pair of second transmission wheels vertically spaced apart from the groove body, and a second transmission belt disposed between the second transmission wheels, a second drive belt is coupled to the upper door joint of the upper door assembly; and a sealing unit is located between the front side wall of the trough body and the multi-door unit. The electric discharge machine fluid tank according to claim 1, wherein the first and second transmission wheels located above the trough body are coaxial and co-moving, and the first and second portions are located below the trough body. The transmission wheels are coaxial and co-operating, and the diameters of the second transmission wheels are respectively larger than the diameters of the first transmission wheels, so that the moving speed and the moving stroke of the second transmission belt are greater than the moving speed and the moving stroke of the first transmission belt. The electric discharge machine fluid tank according to claim 2, wherein the driving unit of the driving unit is a motor, the driving unit further comprises a speed reducer connected to the driving member, and a deceleration The output wheel driven by the machine drives the transmission unit. The electric discharge machine slot for opening and closing according to claim 2, further comprising a sensing unit, the sensing unit comprising a sensing block, and an opening sensing component respectively disposed on the slot body and a Closing the sensing component, the sensing block is disposed in one of the upper door combination and the lower door combination, and when the multiple door unit is in the open position, the sensing block corresponds to the opening sensing component, when the composite door unit When in the closed position, the sensing block corresponds to the enclosed sensing member. An electric discharge machine liquid tank which is opened and closed by a double door as described in claim 4, The sensing block is disposed on the lower door assembly and is coupled to the lower door connector. The electric discharge machine fluid tank according to claim 1, wherein the sealing unit comprises a lower door sealing member disposed on the trough body, and an upper door sealing member disposed on the lower door assembly. Wherein, the lower door seal is located between the front side wall of the trough body and the lower door assembly, and the upper door seal is disposed between the lower door assembly and the upper door assembly.