Screw type cutter with breadth of 3700 mm

Abstract

A 3700 mm breadth spiral cutter comprises a spiral cutter shaft, a spiral cutter frame arranged on the spiral cutter shaft and a spiral cutter installed on the spiral cutter frame through a spiral cutter cover, during transverse cutting, the starting angle and the ending angle of the spiral cutter are kept between 45 degrees and 55 degrees, pressure can be better released between the spiral cutter and a bottom cutter, and the width of the spiral cutter is increased. Meanwhile, the cutting angle of each point of the spiral cutter rotates to different positions along with the cutter point of the dead cutter to generate a proper included angle, so that vibration and noise in the transverse cutting process are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of production of daily-use paper, in particular to a spiral cutter with a width of 3700 mm. Background Art

[0002] In the household paper industry, in order to improve production efficiency, the width is generally increased. For example, the width of the cross-cutting knife is increased in the cross-cutting machine. However, the increase in the width of the cross-cutting knife will cause the cross-cutting knife to vibrate more and make more noise, which will lead to poor cutting of the product and serious wear of the knife. Utility Model Content

[0003] Based on this, the purpose of the utility model is to provide a 3700mm wide spiral cutter to reduce vibration and noise during the cross-cutting process.

[0004] A 3700mm wide spiral cutter comprises a spiral cutter shaft, a spiral cutter holder arranged on the spiral cutter shaft, and a spiral cutter mounted on the spiral cutter holder via a spiral cutter cover. During cross-cutting, the starting angle and the ending angle of the spiral cutter are maintained between 45° and 55°.

[0005] Compared with the prior art, in the utility model, during cross-cutting, the starting angle and the ending angle of the spiral knife are maintained between 45° and 55°, so that the pressure between the spiral knife and the bottom knife can be better released, and at the same time, the cutting angle of each point of the spiral knife can produce a suitable angle when following the rotation of the bottom knife tip to different positions, thereby reducing vibration and noise during the cross-cutting process.

[0006] Furthermore, a spiral convex strip is provided on the surface of the spiral cutter shaft, and the spiral cutter holder is mounted on the spiral convex strip by a plurality of bolts.

[0007] Further, one side of the spiral tool holder is stepped, and includes a first mounting surface, a second mounting surface and a third mounting surface in sequence;

[0008] The first mounting surface is in contact with the spiral convex strip;

[0009] The position of the second mounting surface corresponds to the position of the spiral blade cover, and the two are fixedly connected by a plurality of bolts;

[0010] The spiral cutter is installed between the third installation surface and the end of the spiral cutter cover, and the other surface of the spiral cutter is flush with the second installation surface.

[0011] Further, the spiral blade cover comprises a mounting portion and an extrusion portion connected to each other;

[0012] The mounting portion is fixedly connected to the second mounting surface via a plurality of bolts, and the pressing portion abuts against the spiral cutter.

[0013] Furthermore, a clearance groove is provided on the surface of the mounting portion close to the second mounting surface.

[0014] Furthermore, a clearance angle is provided at a connection between the third mounting surface and the second mounting surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the contour simulation of the spiral cutter and the bottom knife of the utility model with a width of 3700mm;

[0016] Figure 2 This is a schematic diagram of the structure of a 3700mm wide spiral cutter in the utility model;

[0017] Figure 3 for Figure 2 A magnified schematic diagram of center A.

[0018] Description of main component symbols:

[0019] Spiral blade shaft 1 Spiral ribs 10 Spiral tool holder 11 Avoidance angle 111 Spiral Knife Cover 12 Installation Department 121 Avoidance slot 1211 Extrusion Department 122 Spiral Knife 13 Bedknife 2

[0020] The following specific implementation manner will further illustrate the present utility model in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0022] See also Figures 1 to 3 A 3700mm wide spiral cutter provided in one embodiment of the utility model includes a spiral cutter shaft 1, a spiral cutter holder 11 arranged on the spiral cutter shaft 1, and a spiral cutter 13 installed on the spiral cutter holder 11 through a spiral cutter cover 12. When cross-cutting, the starting angle and the ending angle of the spiral cutter 13 are maintained between 45° and 55°.

[0023] It should be noted that, in this application, for the first time, the curve formed by the intersection of the spiral cutter 13 and the bottom cutter 2 is generated by using the trajectory line mode. The design principle is to use the cylinder formed by the roller blade surface of the spiral cutter 13 and the roller outer shape cylinder of the bottom cutter 2, and according to the slope generated when the bottom cutter 2 and the spiral cutter 13 are cut, the curve generated by the intersection of the two cylinders is set as the contact line between the spiral cutter 13 and the tip of the bottom cutter 2; then, according to the contact line, the scanning function is used to use the cross section of the spiral cutter 13 as the contour and the contact line as the path to produce the corresponding state of the spiral cutter 13 when it is installed. During the cross-cutting process, by adjusting the starting angle and the ending angle of the spiral cutter 13 to be maintained between 45° and 55°, the pressure between the spiral cutter 13 and the bottom cutter 2 can be better released, and at the same time, the cutting angle of each point of the spiral cutter 13 can produce a suitable angle when following the rotation of the tip of the bottom cutter 2 to different positions, thereby reducing the vibration and noise during the cross-cutting process.

[0024] See also Figure 2 and Figure 3 In a preferred embodiment of the present application, a spiral ridge 10 is provided on the surface of the spiral cutter shaft 1, and the spiral cutter holder 11 is mounted on the spiral ridge 10 by a plurality of bolts to facilitate installation therebetween.

[0025] See also Figure 2 and Figure 3 In a preferred embodiment of the present application, one side of the spiral tool holder 11 is stepped, and includes a first mounting surface, a second mounting surface and a third mounting surface in sequence;

[0026] The first mounting surface is in contact with the spiral convex strip 10;

[0027] The position of the second mounting surface corresponds to the position of the spiral blade cover 12, and the two are fixedly connected by a plurality of bolts;

[0028] The spiral blade 13 is installed between the third installation surface and the end of the spiral blade cover 12, and the other surface of the spiral blade 13 is flush with the second installation surface.

[0029] See also Figure 2 and Figure 3 In a preferred embodiment of the present application, the spiral blade cover 12 includes a mounting portion 121 and an extrusion portion 122 connected to each other;

[0030] The mounting portion 121 is fixedly connected to the second mounting surface via a plurality of bolts, and the pressing portion 122 abuts against the spiral blade 13 to fix the spiral blade 13 .

[0031] See also Figure 2 and Figure 3In a preferred embodiment of the present application, a clearance groove 1211 is provided on the surface of the mounting portion 121 close to the second mounting surface, so that there is a gap between the mounting portion 121 and the second mounting surface, which can facilitate locking the two with bolts and nuts.

[0032] See also Figure 2 and Figure 3 In a preferred embodiment of the present application, a clearance angle 111 is provided at the connection between the third mounting surface and the second mounting surface. Since the width of the entire tool is large and it is a spiral curved surface, the contact position will be uneven during processing. By setting the clearance angle 111, the uneven position can be removed, so that the spiral cutter 13 is against the second mounting surface during installation, and the surface is flush with the second mounting surface.

[0033] It should be noted that the spiral cutter in the present application can be used not only in the field of household paper and paper-pulling production lines, but also in equipment for the production of non-woven fabrics.

[0034] In summary, in the utility model, during cross-cutting, by adjusting the starting angle and the ending angle of the spiral knife 13 to be maintained between 45° and 55°, the pressure between the spiral knife 13 and the bottom knife 2 can be better released, and at the same time, the cutting angle of each point of the spiral knife 13 can produce a suitable angle when following the rotation of the tip of the bottom knife 2 to different positions, thereby reducing the vibration and noise during the cross-cutting process, making the cutting smoother and more durable, and having the advantages of better adjustment of the cutting and more consistent equipment matching, better meeting the needs of the market.

[0035] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. The above-mentioned embodiments only express several implementation methods of the utility model, and their descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several deformations and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A 3700mm wide spiral cutter, characterized by: It comprises a spiral cutter shaft, a spiral cutter holder arranged on the spiral cutter shaft, and a spiral cutter installed on the spiral cutter holder through a spiral cutter cover. When cross-cutting, the starting angle and the ending angle of the spiral cutter are maintained between 45° and 55°.

2. The 3700 mm wide spiral cutter according to claim 1, characterized in that: A spiral convex strip is arranged on the surface of the spiral cutter shaft, and the spiral cutter holder is mounted on the spiral convex strip through a plurality of bolts.

3. The 3700 mm width spiral cutter according to claim 2, characterized in that: One side of the spiral tool holder is stepped, and includes a first mounting surface, a second mounting surface and a third mounting surface in sequence; The first mounting surface is in contact with the spiral convex strip; The position of the second mounting surface corresponds to the position of the spiral blade cover, and the two are fixedly connected by a plurality of bolts; The spiral cutter is installed between the third installation surface and the end of the spiral cutter cover, and the other surface of the spiral cutter is flush with the second installation surface.

4. The 3700 mm width spiral cutter according to claim 3, characterized in that: The spiral blade cover comprises a mounting portion and an extrusion portion connected to each other; The mounting portion is fixedly connected to the second mounting surface via a plurality of bolts, and the pressing portion abuts against the spiral cutter.

5. The 3700 mm width spiral cutter according to claim 4, characterized in that: A clearance groove is provided on the surface of the mounting portion close to the second mounting surface.

6. The 3700 mm width spiral cutter according to claim 3, characterized in that: A relief angle is provided at the connection between the third mounting surface and the second mounting surface.

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