DE20022391U1 - Vertically sliding foam sponge cutting device - Google Patents

Description

Vertically movable foam sponge cutting device

The present invention relates to a vertically sliding foam sponge cutting device, and more particularly to a foam sponge cutting device in which the cutting wire can be kept in the vertical state when it is slid left and right. In addition, the interval of the working range of the cutting wire can be adjusted. The foam sponge or the like can be cut into products having various irregular or curved shapes. Cutting is facilitated and stabilized.

In conventional foam sponge cutting devices, the interval of the working area of the cutting wire is constant. Consequently, when cutting a hard foam sponge, the cutting wire easily bends and causes an irregular cutting surface. This is because the interval of the working area of the cutting wire is too large and the cutting wire is therefore not rigid enough. Therefore, the cutting wire may be elastically deformed, resulting in an uneven cutting surface. In addition, the cutting speed is slowed down. In addition, if the position of the vertical cutting wire is to be changed during cutting, a control mechanism must be driven to move the large and heavy structure. This wastes a lot of energy.

It is therefore a primary object of the present invention to provide a vertically movable sponge foam cutting apparatus in which the cutting wire can be moved left and right in the vertical state and the work table can move the workpiece so that the sponge foam can be cut into products having various irregular or curved shapes. Therefore, the cutting process can be accelerated to save costs.

It is a further object of the invention to provide a foam sponge cutting device in which an extendable drive device is arranged on the upper support body, by which the detachable upper support body can be moved up and down vertically to change the interval of the working range of the cutting wire. Therefore, the cutting wire is not deflected during cutting, the cutting is stabilized and the cutting surface becomes more uniform.

It is a further object of the present invention to provide a foam sponge cutting apparatus in which the cutting wire can be moved by moving only a few elements by means of the roller unit, the linear slide rods and the guide rails. Therefore, the energy consumption is reduced.

It is a further object of the present invention to provide a foam sponge cutting device to which a horizontal cutting device can be attached at the same time.

The above objects are achieved by the invention defined in the claims.

In the foam sponge cutting device according to the invention, the motor causes the gear shaft to rotate, and the upper and lower support bodies of the blade rotating set are synchronously moved along the slide rails via the threaded rods arranged on the upper and lower cross members of the cutting wire frame. The rollers of the upper and lower support bodies are also synchronously moved to keep the working range of the cutting wire moving left and right in a vertical state. In addition, the detachable upper support body can be moved up and down vertically via the extendable drive device arranged on the upper support body to change the interval of the working range of the cutting wire. The mechanism for

Regulating the deformation of the cutting wire can automatically detect and regulate its deformation. The worktable is alternately linearly moved back and forth, and the positions of the foam sponge and the cutting wire on the plane are adjusted by numerical control to cut the foam sponge into products with different irregular or curved shapes. The vertical cutting is simplified and stabilized, and the energy consumption is reduced, thereby reducing the cost.

The present invention is explained in more detail below with reference to the description and the accompanying drawings. They show:

Fig. 1 is a perspective view of the foam sponge cutting device of the present invention;

Fig. 2 is a front view of the vertical cutting wire assembly of the present invention in an assembled state with the outer cover of the cutting wire frame opened;

Fig. 3a shows the holder body of the present invention in a normal state;

Fig. 3b shows the holder body of the present invention in a lowered state;

Fig. 4 is a side view of the work table of the present invention;

Fig. 5 is a view of the mechanism for regulating the deformation of the cutting wire of the present invention in an assembled state;

Fig. 6 is a perspective view of the cutting wire deformation regulating mechanism of the present invention;

Fig. 7 is a front view of the horizontal cutting wire assembly of the present invention in an assembled state with the outer cover of the cutting wire frame opened;

Fig. 8 is a front view of the assembled horizontal cutting wire assembly of the present invention from another side, with the outer cover of the cutting wire frame opened;

Fig. 9 the application of the present invention in one state; and
Fig. 10 shows the application of the present invention in a different state.

1 to 4, the present invention comprises a frame 10 and a cutting wire frame 20. A work table 11 is mounted on the frame 10. A motor 13 with a toothed belt and a roller assembly 14 is arranged under the work table 11. The two ends of the front and rear parts of the work table 11 each have a roller shaft 12. The cutting wire frame 20 has a vertical cutting device 17. The upper and lower cross members of the vertical cutting device 17 each have a guide rail 21 and a threaded rod 22.

A knife rotating set 30 comprises an upper and a lower knife holder, which are respectively suspended from the upper and lower guide rails 21 of the cutting wire frame 20 and connected to the threaded rods 22.

According to Fig. 2 and 5, a mechanism 50 for regulating the deformation of the cutting wire is arranged on the knife rotating set 30. The knife holder 51 at the front end is integrally connected to a first positive transmission 52 for clamping a cutting wire 90, the two ends of which engage in a positive transmission 53, 58. A threaded rod 54 engages the top of the second positive transmission 53, on which a sliding block 55

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is arranged. Next to the sliding block 55 is arranged a detector set 56 which comprises an upper detector A and a lower detector B. A third forced transmission 58 is arranged on the output shaft of a servo motor 57. As shown in Figs. 5 and 6, when the cutting surface of the cutting wire 90 is rotated by a certain angle, the knife holder 51 is also rotated by a certain angle so that the first forced transmission 52 rotates and indirectly causes the adjacent second forced transmission 53 and the threaded rod 54 to rotate. Accordingly, the sliding block 55 is displaced vertically. When the angle of rotation of the cutting wire 90 is matched to the vertical displacement height of the sliding block and exceeds the allowable limit for the upper sensor A or the lower sensor B, the detector set 56 detects this and immediately activates the servo motor 57 which rotates forwards or backwards in time to cause the third forced transmission 58 and the first forced transmission 52 to rotate. Accordingly, the knife holder 51 can support the cutting wire 90 and correct the deflection to an improved angle. Therefore, the detector set serves as a backup for automatically detecting and correcting the deflection.

According to Fig. 2, a guide roller set 40 comprises a drive roller 41, two rollers 42, 43 and three guide rollers 44, 45, 46. The drive roller 41 is attached to the lower cross member of the cutting wire frame 20 and connected to the output shaft of a motor. The upper and lower knife holder rollers 42, 43 are arranged below the upper and lower knife holders of the knife rotating set 30, respectively. The first and second guide rollers 44, 45 are each arranged at one end of the upper cross member. The upper edges of the two rollers are almost tangential to each other. The third guide roller 46 has a smaller diameter and is arranged next to the second guide roller 45. For horizontal adjustment and displacement of the guide roller 45, a rotary crank 47 is attached to the outside of the guide roller 45 in order to tension the cutting wire (90).

A cutting wire 90 is wound around the drive roller 41 and then pulled upwards to the first guide roller 44. Then the cutting wire 90 is pulled tangentially to the second guide roller 45, further to the third guide roller 46 and finally to the roller 42 of the upper knife holder and then downwards to the roller 43 of the lower knife holder. Finally, the cutting wire 90 is pulled back to the drive roller 41 so that it forms a closed circle. The cutting wire 90 includes a vertical working area X and other areas which form the circular clamping space.

The knife rotating set 32 is controlled by a motion control mechanism. The output shaft end of a motor 23 is coupled to a transmission shaft 24 via a timing belt 25 and a gear 26. The transmission shaft has a plurality of connecting bearings 28. The upper and lower ends of the transmission shaft 24 are vertically connected to the threaded rods 22, respectively. The upper bracket portion 331 and the lower bracket portion 332 of the bracket body 33 have a pneumatic cylinder 60 and an electric cable 70 through which the upper and lower bracket portions 331, 332 are connected to each other. Two connecting rods 62 are screwed and fixed to the two sides of the lower bracket portion 332 and are vertically connected to the upper bracket portion.

In the present invention, when the motor 23 applies rotational force, the toothed belt 25 and the gear 26 mesh with each other and rotate the drive shaft 24. By means of the threaded rods 22 arranged under the upper and lower cross members, the upper and lower support bodies 33 of the knife rotating set 32 are synchronously displaced along the upper and lower guide rails 21 of the cutting wire frame 20, respectively. The rollers 42, 43 of the upper and lower knife sets are also synchronously moved along them in reciprocal fashion to keep the working area X of the cutting wire 90 moving left and right in the vertical state vertical. When the pneumatic cylinder 60 attached to the upper and lower support areas 331, 332 is not operated, the upper and lower

lower support portion 331, 332 into each other. When the pneumatic cylinder 60 is actuated, the extendable rod 61 is pressed out. At the same time, the connecting rods 62 arranged on the two sides of the lower support portion 332 also lower synchronously, whereby the support body 33 can be raised and lowered to change the interval of the working range X of the cutting wire 90.

When the motor causes the drive roller 41 to rotate, the cutting wire 90 is continuously rotated by the transmission of a guide roller set 40 so as to produce a cutting effect on the work table 11.

The second guide roller 45 is moved and shifted by the rotary crank 47 in order to change the circular, closed winding space of the cutting wire and to release the cutting wire 90 when it is to be replaced.

In addition to the vertical cutting device 17 described above, the other side of the cutting wire frame 20 may be provided with a horizontal cutting device 18. The components of the horizontal cutting device correspond to those of the vertical cutting device, with the guide roller set installed in a different direction. Therefore, both vertical and horizontal cutting functions can be performed with a single cutting device.

According to Fig. 7, the components of the guide roller set 40' of the horizontal cutting device 18 are identical to those of the aforementioned guide roller set 40. Alternatively, as shown in Fig. 2, the entire structure of the horizontal cutting device is arranged horizontally, with the cutting wire 90' positioned horizontally on the frame 10. The knife rotation set 30' and the mechanism 50' for regulating the deflection of the cutting wire of the horizontal cutting device are also identical to those of the vertical cutting device.

According to Fig. 8, the components of the horizontal cutting device 18 may be identical to those of the aforementioned vertical cutting device 17, while being arranged in a different direction to form a horizontal cutting device 19 in which the interval of the working range Y of the cutting wire is variable.

As shown in Fig. 9, in the vertical cutting operation, the foam sponge 80 is placed on the work table 11 and then the vertical cutter 17 is activated. The work table is linearly reciprocally moved back and forth to cut the foam sponge vertically along various irregular or curved cutting lines 81. The running of the cutting wire 90 is controlled by changing the position of the rollers of the guide roller set 40, thereby reducing the power consumption of the drive, making the present invention easy and convenient to operate, and achieving a stable cutting effect. Therefore, the power consumption is reduced and the cost is reduced.

As shown in Fig. 10, for horizontal cutting operations, the foam sponge 80 is placed on the work table 11 and then the horizontal cutter 18 (or 19) is activated to cut the foam sponge accordingly along various irregular or curved cutting lines in the horizontal direction. Therefore, both vertical and horizontal cutting can be performed on a single work table. This saves space and indirectly reduces costs.

In the embodiment described above, the two connecting rods screwed and fixed to both sides of the lower bracket portion and fitted into both sides of the upper bracket portion are constituted by two slender rods. However, the connecting rods may be replaced by slide rails to achieve the same connecting effect for the upper and lower bracket portions.

With the above arrangement, the present invention has the following advantages:

1. The extendable drive device enables the vertical cutting device bracket to be controllably raised and lowered to change the interval of the working range of the cutting wire. When the interval is shortened, there is no deflection during cutting, so that the cutting process is stabilized and the uniformity of the cutting surface is improved.

2. Due to the roller set, guide rails and extendable drive device, the shifting and changing of the cutting wire interval can be achieved only by moving some elements, so that energy consumption and labor costs are reduced.

3. The guide threaded rod is fitted with connecting bearings so that it cannot swing due to excessive length. This improves stability.

4. A single device includes both vertical and horizontal cutting devices, so that the use of the device is very convenient.

The above description and the accompanying drawings serve only to illustrate an embodiment of the invention and do not limit the scope of the invention in any way.

Reference symbols

10 Frame

11 Work table

12 roller shaft

13 Engine

14 roller set

17 vertical cutting device

18 horizontal cutting device

19 horizontal cutting device

20 cutting wire frames

21 Guide rail

22 Threaded rod

23 Engine

24 Gear shaft

25 Timing belt

26 Gear

27 Idler

28 connecting bearings

29 Engine

30 knife turning set 30' knife turning set

31 Threaded rod

40 Guide roller set

41 Drive roller

42 roller

43 Roller

44 Leadership role

45 Leadership role

46 Leadership role

47 crank handle

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50 Mechanism for regulating the deformation of the cutting wire 50' Mechanism for regulating the deformation of the cutting wire

51 knife holder

52 Forced translation

53 Forced translation

54 Threaded rod

55 Sliding block

56 Detector set

57 Servo motor

58 Forced translation

60 pneumatic cylinder

61 extendable rod

62 connecting rod 70 electrical cable

80 foam sponge

81 curved cutting line 90 cutting wire

90' cutting wire

331 upper bracket area

332 lower bracket area A upper sensor

B lower sensor

X vertical working area

Y Work area

Claims (11)

1. Vertically displaceable foam sponge cutting device with a frame ( 10 ), a cutting wire frame ( 20 ), a cutting wire ( 90 ), a guide roller set ( 40 ) and a knife rotating set ( 30 ), wherein a work table ( 11 ) is attached to the surface of the frame ( 10 ), the cutting wire frame ( 20 ) is arranged like a bridge above the frame ( 10 ) and has a vertical cutting device ( 17 ), wherein both the upper and the lower cross member of the vertical cutting device ( 17 ) each have a plurality of guide rails ( 21 ) and a transmission mechanism ( 24 ) and the cutting wire ( 90 ) is wound around the guide roller set ( 40 ) and forms a narrow winding line of a certain length, with a vertical working area of the cutting wire ( 90 ), characterized in that a detachable bracket is suspended from the guide rails ( 21 ) arranged on the upper cross member and the transmission mechanism ( 24 ), the bracket comprising an upper bracket portion ( 331 ) at the upper end and a lower bracket portion ( 332 ) at the lower end, the upper and lower bracket portions ( 331 , 332 ) being connected to one another via an extendable drive device for moving the detachable bracket up and down to change the interval of the working range of the cutting wire ( 90 ). 2. A foam sponge cutting device according to claim 1, wherein the other side of the cutting wire frame ( 20 ) has a horizontal cutting device ( 18 , 19 ) whose components correspond to those of the vertical cutting device ( 17 ), while the guide roller set ( 40 ) is mounted in another direction and the knife rotating set ( 30 ), the guide rails ( 21 ) and the transmission mechanisms are also mounted in another direction to form a horizontal cutting device ( 18 , 19 ). 3. A foam sponge cutting device according to claim 2, wherein the cutting wire frame ( 20 ) of the horizontal cutting device ( 18 , 19 ) has an extendable drive unit which is identical to the extendable drive unit of the vertical cutting device ( 17 ) to form a horizontal cutting device ( 18 , 19 ) in which the interval of the working range of the cutting wire ( 90 ) is variable. 4. Foam sponge cutting device according to claim 1, wherein the guide roller set ( 40 ) comprises a drive roller ( 41 ), two rollers ( 43 ) and three guide rollers ( 44 , 45 , 46 ), the drive roller ( 41 ) being mounted on the lower cross member of the cutting wire frame ( 20 ) and connected to an output shaft of a motor ( 23 ), the upper and lower blade holder rollers being arranged respectively under the upper and lower blade holders of the blade rotating set ( 30 ), the first and second guide rollers ( 44 , 45 ) being arranged respectively at the ends of the upper cross member, and the upper edges of the two rollers running tangentially, the third guide roller ( 46 ) having a smaller diameter and being arranged next to the second guide roller ( 45 ) and being arranged on the outside of the second guide roller ( 45 ) for horizontally adjusting and moving the second A rotary crank ( 47 ) is arranged on the guide roller ( 45 ) in order to tension the cutting wire ( 90 ). 5. A foam sponge cutting device according to claim 1, wherein the knife rotating set ( 30 ) comprises upper and lower knife holders each comprising a holder body, a transmission mechanism and a knife holder ( 51 ), on one of the knife holders a mechanism for regulating the deflection of the cutting wire ( 90 ) connected to the knife holder ( 51 ) of the knife holder is mounted, and the knife holder ( 51 ) is attached to one end of the knife holder to clamp the cutting wire ( 90 ), the upper and lower knife holders are respectively suspended from the upper and lower guide rails ( 21 ) of the cutting wire frame ( 20 ) and connected to two threaded rods ( 22 ). 6. Foam sponge cutting device according to claim 1, wherein both the upper and lower cross members of the vertical cutting device ( 17 ) have two guide rails ( 21 ) and a threaded rod ( 31 ). 7. A foam sponge cutting device according to claim 1, wherein the cutting wire ( 90 ) is wound over the drive roller and then pulled upwards to the first guide roller ( 44 ), then tangentially to the second guide roller ( 45 ), to the third guide roller ( 46 ) and further to the upper knife support roller and then downwards to the lower knife support roller and finally back to the drive roller to form a closed circular winding space. 8. A foam sponge cutting device according to claim 1, wherein the upper support portion ( 331 ) is connected to the front end of a pneumatic cylinder ( 60 ), and the lower support portion ( 332 ) is vertically coupled to an extendable shaft of the pneumatic cylinder ( 60 ), two connecting rods are screwed and fixed to the lower support portion ( 332 ) and vertically fitted with the upper support portion ( 331 ), and an electric cable ( 70 ) connects the upper and lower support portions ( 331 , 332 ) to each other. 9. A foam sponge cutting device according to claim 8, wherein the connecting rods are formed by slender rods. 10. A foam sponge cutting device according to claim 8, wherein the connecting rods are formed by slide rails. 11. The foam sponge cutting device according to claim 8, wherein one end of the electric cable ( 70 ) is arranged on a side surface of the lower side of the upper support portion ( 331 ) and the other end is arranged on a side surface of the upper side of the lower support portion ( 332 ).