A cutting device

Abstract

This utility model discloses a cutting device, including a support platform for forward conveying of a material belt, a pressure plate assembly mounted horizontally on the upper front end of the support platform, and a pressure plate in the pressure plate assembly pressing down onto the material belt; it also includes a cutting mechanism, which includes a blade holder that is driven by a driving force to move along the width direction of the material belt. The blade holder is axially arranged along the conveying direction of the material belt, and a ring-shaped blade is coaxially mounted on the blade holder. A ring spring is sleeved on the blade holder on the side of the blade away from the pressure plate. The ring spring is limited and pressed against the side of the blade by a pressing component. The ring spring causes the blade to press against the pressure plate, thereby achieving elastic buffering installation of the blade on the blade holder. This effectively ensures that the blade is pressed against the pressure plate and will not detach from the preset cutting position, and effectively reduces or even avoids the generation of vibration, ensuring smooth and efficient cutting, helping to extend the service life of the cutter, and has good practicality.

Description

Technical Field

[0001] This utility model relates to the field of nonwoven fabric production equipment technology, and in particular to a cutting device. Background Technology

[0002] Nonwoven fabrics in roll form can be used as raw materials for dry wipes, in vitro diagnostic test strips, etc. They can be processed and produced according to actual processing requirements through operations such as spraying, punching, drying, and cutting to obtain the corresponding finished products.

[0003] A cutting mechanism is typically used to cut the strip material released from the roll. In existing technology, the cutter in the cutting mechanism is usually fixed to the cutter holder by bolts or other means, forming a rigid connection. The cutter holder is rotatably mounted on an external translation mechanism using bearings. The translation mechanism drives the cutter to translate via the cutter holder to cut the strip material. In existing cutting mechanisms, due to factors such as machining errors and assembly errors, it is impossible to effectively guarantee the concentricity of the cutter relative to the bearing. During the cutting process, the cutter exhibits a certain degree of runout and may even cause vibration. As cutting progresses, the cutter is prone to wear and may detach from the preset cutting position, resulting in uneven cutting. Furthermore, the vibration may cause the cutter to collide with the track, resulting in damage or even breakage. Utility Model Content

[0004] To address the aforementioned issues, this application provides a cutting device with a reasonable structure, thereby achieving elastic buffering installation of the blade on the blade holder, effectively reducing or even avoiding vibration, ensuring smooth and efficient cutting, helping to extend the service life of the cutter, and demonstrating good practicality.

[0005] The technical solution adopted in this utility model is as follows: A cutting device includes a support platform for forward conveying of a material belt, a pressure plate assembly mounted horizontally on the upper front end of the support platform, and a pressure plate in the pressure plate assembly pressing down onto the material belt; it also includes a cutting mechanism, which includes a cutter holder that is driven by a driving force to move along the width direction of the material belt. The cutter holder is axially arranged along the conveying direction of the material belt, and a ring-shaped blade is coaxially mounted on the cutter holder. A ring spring is sleeved on the cutter holder located on the side of the blade away from the pressure plate. The ring spring is limited and pressed against the side of the blade by a pressing component, and the ring spring causes the blade to press against the pressure plate.

[0006] As a further improvement to the above technical solution: The side of the press-fit component facing the annular spring is set as a conical surface along the circumferential edge, and the annular spring fits against the conical surface of the press-fit component.

[0007] The ring spring is a ring structure formed by connecting the two cylindrical ends of a cylindrical spring end to end.

[0008] A stop is provided on the side of the blade that is away from the ring spring. The stop is embedded in the circumference of the tool holder and restricts the blade from disengaging from the tool holder in the axial direction.

[0009] The tool holder is rotatably mounted on the translation seat via bearings. The translation seat is mounted on the output section of the linear module. The linear module is supported above the material strip width direction by crossbeams on both sides.

[0010] The front end of the support platform is equipped with a track component, and a pressure plate presses against the material strip on the top surface of the track component, with the blade edge fitting against the front side of the track component.

[0011] A molding mechanism is connected to the front of the support platform. The molding mechanism has a support platform that supports the material strip. There is a gap between the rear end of the support platform and the front end of the support platform to form a space for the blade to move for cutting.

[0012] The rear end face of the support is equipped with a wear-resistant component, and the upper part of the rear end face of the wear-resistant component is set as an inclined surface.

[0013] The rear end of the pressure plate is provided with a pivot axis, and the front end of the pressure plate extends downward to form a pressing edge that presses down on the surface of the material strip. The pressing edge is arranged as a whole or at intervals along the width direction of the material strip. The pressure plate swings around the pivot axis, causing the pressing edge to press down on the material strip or to break away from it.

[0014] The rear ends of both sides of the pressure plate are coaxially provided with a first pin, which is rotatably mounted on the base and forms the pivot axis of the pressure plate. The front side of the base is rotatably mounted with a linear drive power via a bracket. The output end of the linear drive power is rotatably fitted with the pressure plate via a second pin, which is located in front of the first pin.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This utility model achieves elastic buffering installation of the blade on the blade holder by setting a ring spring, which can effectively ensure that the blade is close to the pressure plate and will not fall out of the preset cutting position. It can also effectively reduce or even avoid the generation of vibration, ensure smooth and easy cutting, help to extend the service life of the cutter, and has good practicality. This utility model also has the following advantages: The press-fit component contacts the ring spring via a conical surface, which not only effectively ensures a reliable tight fit between the ring spring and the blade, but also allows the ring spring to provide a certain elastic deformation space in the axial and radial directions of the blade by its own elasticity. This effectively ensures the reliability and stability of the elastic buffer applied to the blade by the ring spring, and guarantees the structural reliability of the cutting mechanism during the cutting process. The blade is driven by a ring spring to fit against the pressure plate, ensuring that the blade edge always fits against the track component. This effectively guarantees that the blade can cut along the preset position effectively and reliably during the cutting process without being affected by wear. The pressure plate adopts a pivot structure, and the pressure edge of the pressure plate contacts the material strip. While achieving and ensuring the pressing, it effectively reduces the contact area between the pressure plate and the material strip, thereby reducing or even avoiding adverse effects such as damage to the material strip caused by the pressure plate. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a cross-sectional view of the present invention.

[0018] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.

[0019] Figure 4 This is a schematic diagram of the cutting mechanism of this utility model.

[0020] Figure 5 This is a schematic diagram of the blade of this utility model installed on the blade holder.

[0021] Figure 6 for Figure 5 A magnified view of a section at point B.

[0022] Figure 7 This is a schematic diagram of the structure of the annular spring of this utility model.

[0023] Figure 8 This is a schematic diagram of the pressure plate assembly of this utility model.

[0024] The components include: 1. Base plate; 2. Support platform; 3. Width adjustment and centering assembly; 4. Pressure plate assembly; 5. Cutting mechanism; 6. Molding mechanism; 10. Material strip; 20. Track components; 41. Base; 42. Pin 1; 43. Pressure plate; 44. Pin 2; 45. Linear drive power; 46. Bracket; 431. Pressure edge; 50. Blade; 51. Support; 52. Guide assembly; 53. Linear module; 54. Translation seat; 55. Handle; 56. Tool holder; 57. Press-fit component; 58. Circular spring; 501. Stop component; 561. Bearing; 571. Conical surface; 60. Support platform; 601. Incline. Detailed Implementation

[0025] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0026] like Figure 1 and Figure 5As shown, a cutting device in this embodiment includes a support platform 2 for forward conveying of a material belt 10, a pressure plate assembly 4 mounted horizontally on the upper front end of the support platform 2, and a pressure plate 43 in the pressure plate assembly 4 pressing downward onto the material belt 10; it also includes a cutting mechanism 5, which includes a cutter holder 56 that is driven by a driving force to move along the width direction of the material belt 10. The cutter holder 56 is axially arranged along the conveying direction of the material belt 10, and a ring-shaped blade 50 is coaxially mounted on the cutter holder 56. A ring spring 58 is sleeved on the cutter holder 56 on the side of the blade 50 away from the pressure plate 43. The ring spring 58 is limited and pressed against the side of the blade 50 by a pressing component 57, and the ring spring 58 causes the blade 50 to press against the pressure plate 43.

[0027] In this embodiment, the pressure plate 43 in the pressure plate assembly 4 applies downward pressure to the strip 10 to fix the strip 10, so as to facilitate the movement of the blade 50 in the cutting mechanism 5 along the width direction of the strip 10 for cutting; after the cutting is completed, the pressure plate 43 is released from the strip 10, and the strip 10 moves forward relative to the support platform 2 to facilitate the next cutting.

[0028] In this embodiment, the ring spring 58 enables the blade 50 to be elastically and bufferedly mounted on the blade holder 56, which effectively ensures that the blade 50 is tightly attached to the pressure plate 43 and will not leave the preset cutting position.

[0029] In this embodiment, the annular spring 58 and the pressure plate 43 are located on both sides of the blade 50, so that the blade 50 can be driven to face and approach the pressure plate 43 by the elastic force of the annular spring 58, and the positional stability of the blade 50 relative to the pressure plate 43 can be effectively maintained, thus ensuring cutting consistency and reliability.

[0030] like Figure 6 As shown, the side of the press-fit member 57 facing the annular spring 58 is set as a conical surface 571 along the circumferential edge, and the annular spring 58 is attached to the conical surface 571 of the press-fit member 57.

[0031] In this embodiment, the press-fit component 57 contacts the annular spring 58 via the conical surface 571, which not only effectively ensures the reliable tightness between the annular spring 58 and the blade 50, but also allows the annular spring 58 to provide a certain elastic deformation space in the axial and radial directions of the blade 50 by its own elasticity. This effectively ensures the reliability and stability of the elastic buffer applied to the blade 50 by the annular spring 58, and ensures the structural reliability of the cutting mechanism 5 during the cutting process.

[0032] In this embodiment, the press-fitting component 57 can be threaded and fitted onto the tool holder 56 circumferentially, so that the press-fitting component 57 can elastically press the blade 50 through the annular spring 58.

[0033] like Figure 7As shown, the annular spring 58 is a ring structure formed by connecting the two cylindrical ends of a cylindrical spring end to end, thereby effectively ensuring that the annular spring 58 has elasticity in both the axial and radial directions of the ring, and effectively ensuring that the annular spring 58 provides effective and reliable elastic buffering for the blade 50.

[0034] A stop 501 is provided on the side of the blade 50 that is away from the annular spring 58. The stop 501 is embedded in the circumferential direction of the tool holder 56 and restricts the blade 50 from disengaging from the tool holder 56 in the axial direction.

[0035] In this embodiment, the installation of the blade 50 on the blade holder 56 is achieved and ensured by the stop member 501 and the ring spring 58 located on both sides of the blade 50. The stop member 501 is located on the rear side of the blade 50, and the ring spring 58 is located on the front side of the blade 50. Thus, the ring spring 58 can keep the blade 50 in forward contact by elastic force, so that the blade 50 is arranged close to the pressure plate 43 and the spacing between them is as small as possible, so as to ensure the cutting of the strip 10 by the blade 50.

[0036] In this embodiment, the stop member 501 can be a commonly used annular retaining ring structure, which is circumferentially engaged in the groove of the tool holder 56 to limit the blade 50 and ensure the installation of the blade 50 on the tool holder 56; of course, other structural forms of the stop member 501 can also be used, as long as they can ensure the installation and limitation of the blade 50 on the tool holder 56.

[0037] like Figure 4 and Figure 5 As shown, the tool holder 56 is rotatably mounted on the translation seat 54 via the bearing 561. The translation seat 54 is mounted on the output part of the linear module 53. The linear module 53 is supported above the width direction of the material strip 10 by the crossbeams of the two side pillars 51.

[0038] In this embodiment, the linear module 53 drives the translation seat 54 to move in the width direction of the strip 10, thereby driving the blade 50 to move in the width direction of the strip 10 via the blade holder 56. Combined with the rotational assembly between the blade holder 56 and the translation seat 54, the circumferential cutting edge of the blade 50 cuts the strip 10.

[0039] In this embodiment, a base plate 1 can be set below the support platform 2, and the support platform 2 is supported and installed on the base plate 1; the two side pillars 51 are respectively installed on the base plate 1 on both sides of the support platform 2, forming a horizontal frame arrangement of the cutting mechanism 5 relative to the width direction of the support platform 2, which can drive the blade 50 to move in the width direction of the strip 10 by the operation of the linear module 53.

[0040] In this embodiment, a guide component 52 can also be arranged parallel to the linear module 53. The translation seat 54 is slidably fitted with the guide component 52. During the process of the linear module 53 driving the translation seat 54 to move, the guide component 52 provides guidance for the movement of the translation seat 54.

[0041] In this embodiment, a handle 55 can also be provided on the translation seat 54 according to actual needs, so that the translation seat 54 can be moved by the handle 55, which is convenient for manual operation in situations such as machine adjustment and maintenance.

[0042] like Figure 2 and Figure 3 As shown, the front end of the support platform 2 is equipped with a track component 20, the pressure plate 43 is pressed against the material strip 10 on the top surface of the track component 20, and the blade 50 is attached to the front side of the track component 20.

[0043] In this embodiment, the ring spring 58 drives the blade 50 to conform to the pressure plate 43, so that the cutting edge of the blade 50 can always conform to the track component 20. Thus, the track component 20 effectively ensures that the blade 50 can effectively and reliably cut along the preset position during the cutting process, reducing or even avoiding the impact of wear.

[0044] In this embodiment, the track component 20 can be made of wear-resistant material to ensure and improve the cutting effect and service life.

[0045] exist Figure 6 In the embodiment shown, the blade 50 has a tapered surface in the circumference, and the cutting edge is formed by the large end of the tapered surface facing backward, so that the cutting edge of the blade 50 is as close as possible to the pressure plate 43 located behind.

[0046] A molding mechanism 6 is connected to the front of the support platform 2. The support 60 in the molding mechanism 6 supports the material strip 10. There is a gap between the rear end of the support 60 and the front end of the support platform 2, which forms a space for the blade 50 to move for cutting, thereby effectively ensuring the consistency and stability of the blade 50 moving along the width direction of the material strip 10 during the cutting process.

[0047] In this embodiment, the molding mechanism 6 can be configured according to actual processing requirements, such as performing molding and punching processes.

[0048] In actual operation, the front end of the strip 10 is conveyed to the molding mechanism 6, and then the cutting mechanism 5 cuts the strip 10. After the molding mechanism 6 finishes processing the strip 10 and transfers it, the strip 10 on the support platform 2 is fed to the molding mechanism 6 again.

[0049] In this embodiment, the feeding of the material strip 10 toward the molding mechanism 6 can be carried out by an external clamping and transfer mechanism, such as by clamping and transferring the edge of the material strip 10 and moving it forward.

[0050] In this embodiment, according to actual needs, width adjustment and centering components 3 can also be set on both sides of the support platform 2 behind the pressure plate assembly 4 to adjust the position of the feeding strip 10 of the support platform 2 in the width direction so that it is aligned with the support 60 in the molding mechanism 6.

[0051] In this embodiment, the width adjustment and centering component 3 can adopt an existing conventional structure, such as a manually adjustable rotating screw structure. The screw is arranged axially along the width direction of the support platform 2, and the screw is screw-mounted relative to the support platform 2. The rotation of the screw drives the width adjustment component at the end of the screw to move closer to or away from the edge of the material strip 10.

[0052] The rear end face of the support 60 is equipped with a wear-resistant part, and the upper part of the rear end face of the wear-resistant part is set as an inclined surface 601.

[0053] In this embodiment, the inclined surface 601 facilitates the stable and reliable movement and conveying of the material strip 10 toward the support 60 after cutting.

[0054] The rear end of the pressure plate 43 is provided with a pivot shaft, and the front end of the pressure plate 43 extends downward to form a pressing ridge 431 that presses down on the surface of the material strip 10, such as Figure 8 As shown, the pressure ribs 431 are arranged as a whole or at intervals along the width of the material strip 10; the pressure plate 43 swings around the pivot axis, causing the pressure ribs 431 to press down on the material strip 10 or to break away from it.

[0055] In this embodiment, the pressure plate 43 adopts a pivot structure, and the pressure edge 431 of the edge of the pressure plate 43 contacts and applies force to the material strip 10. While achieving and ensuring the pressing, it effectively reduces the contact area between the pressure plate 43 and the material strip 10, thereby reducing or even avoiding adverse effects such as damage to the material strip 10 caused by the force applied by the pressure plate 43.

[0056] exist Figure 8 In the embodiment shown, pins 42 are coaxially arranged at the rear ends of both sides of the pressure plate 43. The pressure plate 43 is rotatably mounted on the base 41 via pins 42, and the pivot axis of the pressure plate 43 is formed by pins 42. A linear drive power 45 is rotatably mounted on the front side of the base 41 via a bracket 46. The output end of the linear drive power 45 is rotatably fitted with the pressure plate 43 via pin 44, and pin 44 is located in front of pin 42.

[0057] In actual use, the linear drive power 45 works, pulling the pressure plate 43 to swing downward around the pin 42 until the front edge 431 of the pressure plate 43 contacts and presses down on the material belt 10, thus achieving the pressing of the pressure plate 43 on the material belt 10; the linear drive power 45 reverses its action, pushing the pressure plate 43 to swing upward around the pin 42, causing the front edge 431 of the pressure plate 43 to disengage from the material belt 10, thus releasing the pressing of the pressure plate 43 on the material belt 10.

[0058] In this embodiment, one end of the linear drive power 45 is rotatably mounted to the pressure plate 43 via the second pin shaft 44, and the other end of the linear drive power 45 is rotatably mounted to the bracket 46, thereby effectively ensuring the linear power output of the linear drive power 45, smoothly and seamlessly driving the pressure plate 43 to swing in a circle around the first pin shaft 42.

[0059] In this embodiment, the linear drive power 45 can be selected from existing common linear power sources such as cylinders, hydraulic cylinders, and electric cylinders.

[0060] In this embodiment, the base 41 can support the installation on the bottom plate 1 below both sides of the support platform 2, forming a crossbeam arrangement of the pressure plate assembly 4 relative to the support platform 2 in the width direction.

[0061] This invention achieves elastic buffering installation of the blade on the blade holder, effectively reducing or even avoiding vibration, ensuring smooth and even cutting, helping to extend the service life of the cutter, and is highly practical.

[0062] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0063] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. A cutting device, comprising a support platform (2) for forward conveying of a support strip (10), characterized in that: A pressure plate assembly (4) is provided on the upper front end of the support platform (2). The pressure plate (43) in the pressure plate assembly (4) is pressed down onto the material belt (10). It also includes a cutting mechanism (5). The cutting mechanism (5) includes a knife holder (56) that is driven by a driving force to move along the width direction of the material belt (10). The knife holder (56) is axially arranged along the conveying direction of the material belt (10). The knife holder (56) is circumferentially coaxially fitted with a ring-shaped blade (50). A ring spring (58) is sleeved on the knife holder (56) on the side of the blade (50) away from the pressure plate (43). The ring spring (58) is limited and pressed against the side of the blade (50) by the pressing part (57). The ring spring (58) causes the blade (50) to press against the pressure plate (43).

2. The cutting device as described in claim 1, characterized in that: The side of the press-fit part (57) facing the annular spring (58) is set as a conical surface (571) along the circumferential edge, and the annular spring (58) fits against the conical surface (571) of the press-fit part (57).

3. The cutting device as described in claim 1, characterized in that: The ring spring (58) is a ring structure formed by connecting the two cylindrical ends of a cylindrical spring end to end.

4. The cutting device as described in claim 1, characterized in that: A stop (501) is provided on the side of the blade (50) that is away from the ring spring (58). The stop (501) is embedded in the circumference of the tool holder (56) and restricts the blade (50) from disengaging from the tool holder (56) in the axial direction.

5. A cutting device as described in claim 1, characterized in that: The tool holder (56) is rotatably mounted on the translation seat (54) via the bearing (561). The translation seat (54) is mounted on the output part of the linear module (53). The linear module (53) is supported above the width direction of the strip (10) by the crossbeams of the two side pillars (51).

6. The cutting device as described in claim 1, characterized in that: The front end of the support platform (2) is equipped with a track component (20), and the pressure plate (43) presses against the material strip (10) on the top surface of the track component (20), and the blade (50) is attached to the front side of the track component (20).

7. A cutting device as described in claim 1, characterized in that: The support platform (2) is connected to the front of the molding mechanism (6), the support platform (60) in the molding mechanism (6) supports the material belt (10), and there is a gap between the rear end of the support platform (60) and the front end of the support platform (2) to form a space for the blade (50) to move for cutting.

8. A cutting device as described in claim 7, characterized in that: The rear end face of the support (60) is fitted with a wear-resistant part, and the upper part of the rear end face of the wear-resistant part is set as an inclined surface (601).

9. A cutting device as described in claim 1, characterized in that: The rear end of the pressure plate (43) is provided with a pivot axis, and the front end of the pressure plate (43) extends downward to form a pressing edge (431) that presses down on the surface of the material strip (10). The pressing edge (431) is arranged as a whole or at intervals along the width direction of the material strip (10). The pressure plate (43) swings around the pivot axis, causing the pressing edge (431) to press down on the material strip (10) or to break away from it.

10. A cutting device as described in claim 1 or 9, characterized in that: The rear ends of both sides of the pressure plate (43) are coaxially provided with a first pin (42), which is rotatably mounted on the base (41) via the first pin (42). The first pin (42) forms the pivot axis of the pressure plate (43) axially. The front side of the base (41) is rotatably mounted with a linear drive power (45) via a bracket (46). The output end of the linear drive power (45) is rotatably fitted with the pressure plate (43) via a second pin (44). The second pin (44) is located in front of the first pin (42).

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