Shearing roller cutter with heat dissipation structure

Abstract

The utility model discloses a slitting roller cutter with a heat dissipation structure, which relates to the technical field of slitting roller cutters and comprises a base body, a central hole is arranged in the middle of the base body, an external ring is arranged on the outer side of the base body, and hard alloy blades are fixedly mounted on two sides of the external ring. A connecting structure is arranged between the external ring and the hard alloy blade; the thickness of the base body is not less than 20mm; a heat dissipation structure is arranged on the base body and comprises a vertical air channel and a transverse air channel, the vertical air channel is communicated with the transverse air channel, the two ends of the transverse air channel are communicated to the two sides of the base body, and the problem that the heat dissipation effect of the slitting roller blade is affected in the prior art is solved.

Description

Technical Field

[0001] This utility model relates to the field of rolling shearing tools, specifically a rolling shearing machine blade with a heat dissipation structure. Background Technology

[0002] A rotary shearing machine is a new type of machine that performs an infinitely long shearing action by rolling a circular blade on a sheet material. Rotary shearing machines are used for longitudinal rolling shearing of metal coils, sheets, plastic sheets, PVC, paper, etc., and are widely used in packaging, building materials, home appliances, automobiles, hardware, and other industries.

[0003] Most rotary shears employ an outer blade and an inner blade structure. The outer blade is made of a high-performance alloy material. For example, CN105618843A discloses a composite structure disc rotary shear, which includes an inner ring blade body and an outer ring blade body. The inner ring blade body has an I-shaped structure. The inner ring blade body and the outer ring blade body are provided with screw holes and are fixedly connected.

[0004] This type of structure involves fixing the inner and outer blade bodies to the inner blade body using bolts, which requires sufficient space for bolt installation. Furthermore, existing rotary shear blades lack effective heat dissipation. Therefore, we provide a rotary shear blade with a heat dissipation structure to solve these problems. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art by providing a rotary shear blade with a heat dissipation structure to solve the problem of heat dissipation effect of the rotary shear blade in the prior art.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a rolling shear cutter with a heat dissipation structure, including a base body, a central hole in the middle of the base body, an outer ring on the outer side of the base body, and carbide blades fixedly installed on both sides of the outer ring; a connecting structure is provided between the outer ring and the carbide blades.

[0007] The thickness of the substrate is not less than 20mm; a heat dissipation structure is provided on the substrate, the heat dissipation structure includes vertical air channels and horizontal air channels, and the vertical air channels and horizontal air channels are connected to each other, and the two ends of the horizontal air channels are connected to both sides of the substrate.

[0008] In a further technical solution, the connecting structure includes a protrusion and a recess, with the recess disposed on both sides of the outer ring; the protrusion is disposed on the side of the carbide blade facing the outer ring, and the protrusion and the recess are adapted to each other.

[0009] In a further technical solution, the edge of the carbide cutting edge away from the central hole is flush with the edge of the corresponding outer ring away from the central hole.

[0010] In a further technical solution, the lateral vertical cross-section of the outer ring is trapezoidal outside the substrate, and the waist-length spacing gradually decreases towards the distance from the central hole.

[0011] In a further technical solution, the cemented carbide cutting edge includes a first connecting part, a second connecting part, and an intermediate ring; the second connecting part and the first connecting part are located on both sides of the outer ring, and are fixedly connected to each other by the intermediate ring.

[0012] In a further technical solution, the cemented carbide cutting edge has a positioning hole on the side facing the substrate, and the positioning hole is a threaded hole;

[0013] The base includes a fixed ring and a groove. One end of the groove extends to the central hole, and the other end extends to the fixed ring. A reinforcing ring is installed on the fixed ring, and a positioning bolt is installed on the reinforcing ring and the fixed ring. The bolt body passes through the reinforcing ring and the fixed ring to the positioning hole of the carbide cutting edge. The positioning bolt and the positioning hole are threaded together.

[0014] In a further technical solution, the vertical air passage is provided with inclined air passages on both sides away from the central hole, and the inclined air passages are connected to the notch.

[0015] In a further technical solution, the base edge lines on both sides of the outer ring are inclined from the outside to the inside, and the angle between the inclination angle and the vertical edge line is 60-85°.

[0016] Compared with existing technologies, it has the following advantages:

[0017] This invention employs vertical and horizontal air channels on the rotary shear blade to reduce heat concentration on the cutter head and decrease the weight of the blade during cutting. A trapezoidal outer ring is provided on the surface. Since rotary shearing involves staggered vertical shearing, the area subjected to prolonged grinding is the outer apex of the carbide cutting edge. The trapezoidal shape results in a longer carbide cutting edge on the central surface, allowing for greater lateral wear allowance and facilitating long-term shearing use.

[0018] This utility model features a protrusion and a recess; the connecting structure also enhances radial support and ensures the cutting strength of the carbide blade.

[0019] This invention features an oblique air passage that connects the carbide blade with the vertical and horizontal air passages, thereby achieving a more convenient heat dissipation effect. Attached Figure Description

[0020] Figure 1 This is a front view of the rotary shear cutter blade of Embodiment 1 of this utility model;

[0021] Figure 2 for Figure 1 AA section view;

[0022] Figure 3 This is a schematic diagram of the base and outer ring structure of Embodiment 2 of this utility model (excluding the carbide blade);

[0023] Figure 4 This is a vertical sectional view of the rotary shear cutter of this utility model 2;

[0024] Figure 5 for Figure 4 Enlarged schematic diagram of part B;

[0025] Figure 6 This is a vertical cross-sectional view of the rotary shear cutter according to Embodiment 3 of this utility model;

[0026] Figure 7 for Figure 6 Enlarged schematic diagram of part C;

[0027] Figure 8 This is a front view of the rotary shear cutter blade of Embodiment 4 of this utility model;

[0028] Figure 9 This is a vertical sectional view of the rotary shear cutter of Embodiment 4 of this utility model;

[0029] Figure 10 for Figure 9 Enlarged view of part D;

[0030] Figure 11 This is a vertical sectional view of the rotary shear cutter of Embodiment 5 of this utility model;

[0031] Figure 12 for Figure 11 Enlarged view of part D;

[0032] In the picture:

[0033] 1. Matrix; 2. External ring; 3. Carbide blade; 4. Vertical air passage; 5. Horizontal air passage; 7. Positioning bolt; 8. Angled air passage;

[0034] 11. Fixing ring; 12. Groove; 13. Center hole;

[0035] 21. Notch 1; 31. Protrusion 1; 32. Connecting part 1; 33. Connecting part 2; 34. Intermediate ring; 35. Positioning hole. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] Example 1

[0038] Please see Figure 1 and 2 This utility model provides a technical solution: a rolling shear cutter with a heat dissipation structure, including a base 1, a central hole 2 in the middle of the base 1, an outer ring 2 on the outer side of the base 1, and carbide blades 3 fixedly installed on both sides of the outer ring 2; a connecting structure is provided between the outer ring 2 and the carbide blades 3.

[0039] The thickness of the base 1 is not less than 20mm; a heat dissipation structure is provided on the base 1, which includes a vertical air channel 4 and a horizontal air channel 5, and the vertical air channel 4 and the horizontal air channel 5 are connected. The two ends of the horizontal air channel 5 are connected to both sides of the base 1. The carbide blade and the base are connected by thermal welding to ensure the connection strength.

[0040] In this embodiment, vertical and horizontal air channels are provided on the rotary shear blade to reduce heat concentration on the cutter head and decrease the weight of the blade during cutting. A trapezoidal outer ring is provided on the surface, such as... Figure 2 As shown, since the rolling shear is an up-and-down staggered shearing process, the part that is ground for a long time is the outer apex of the carbide cutting edge. The trapezoidal shape makes the carbide cutting edge on the middle surface longer, resulting in a larger allowance for lateral wear during grinding, which is beneficial for long-term shearing use.

[0041] Example 2

[0042] like Figure 3-5 As shown, another embodiment of the present invention is provided. Based on embodiment 1, the connecting structure includes a protrusion 31 and a recess 21. The recess 21 is disposed on both sides of the outer ring 2. The protrusion 31 is disposed on the side of the carbide blade 3 facing the outer ring 2. The protrusion 31 and the recess 21 are adapted to each other.

[0043] The edge of the carbide blade 3 away from the central hole 2 is flush with the edge of the corresponding outer ring 2 away from the central hole 2. The flush surfaces facilitate cutting and do not interfere with the material's movement.

[0044] The lateral vertical cross-section of the outer ring 2 is trapezoidal outside the base 1, and the waist-length spacing gradually decreases away from the central hole 2. In order to achieve backward restraint during the shearing of the carbide blade, a protrusion and a notch are provided; the provided connecting structure can also enhance the radial support force and ensure the cutting strength of the carbide blade.

[0045] Example 3

[0046] like Figure 6 and 7 As shown, another embodiment of this utility model is presented. Based on embodiment 1, the carbide blade 3 includes a first connecting part 32, a second connecting part 33, and an intermediate ring 34. The ends of the second connecting part 33 and the first connecting part 32 are located on both sides of the outer ring 2, and are fixedly connected to each other by the intermediate ring 34. In this embodiment, the integrity of the connection is ensured by processing the carbide blade into a whole. During manufacturing, the connection between the first connecting notch and the first protrusion is achieved by high-temperature hot rolling inlay.

[0047] Example 4

[0048] like Figure 8-10 As shown, this is another embodiment of the present invention, based on embodiment 3, as follows: Figure 10 As shown, the cemented carbide cutting edge 3 has a positioning hole 35 on the side facing the base 1, and the positioning hole 35 is a threaded hole;

[0049] The base 1 includes a fixing ring 11 and a groove 12. The groove is formed by boring pins into the base. A positioning bolt is installed in the groove. The head of the positioning bolt is fitted with a bonding plate that fits onto the fixing ring to achieve a tight connection.

[0050] One end of the groove 12 extends to the central hole 2, and the other end extends to the fixing ring 11. A positioning bolt 7 is installed on the fixing ring 11. The bolt body of the positioning bolt 7 passes through the reinforcing ring 6 and the fixing ring 11 to the positioning hole 35 of the carbide blade 3. The positioning bolt 7 and the positioning hole 35 are threadedly connected.

[0051] Example 5

[0052] like Figure 11-12 As shown, another embodiment of this utility model is presented. Based on embodiment 4, inclined air channels 8 are provided on both sides of the vertical air channel 4 away from the central hole 2, and the inclined air channels 8 are connected to the notch 21. The inclined air channels connect the carbide blade with the vertical air channel and the horizontal air channel, thereby achieving a more convenient heat dissipation effect.

[0053] Furthermore, the edges of the base 1 on both sides of the outer ring 2 are inclined from the outside to the inside, and the angle between the inclination and the vertical edge is 60-85°. The inclined edges of the base increase the contact area between the carbide blade and the base, which is beneficial for bearing and ensuring the cutting effect.

[0054] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A roll shear cutter having a heat dissipating structure, characterized by, The utility model provides a cutting tool, including base (1), the central hole (13) is arranged in the middle part of base (1), and the outer ring (2) is arranged on the outside of base (1), and the hard alloy blade (3) is fixedly installed on both sides of outer ring (2);Connecting structure is arranged between outer ring (2) and hard alloy blade (3); The thickness of the base (1) is not less than 20 mm; a heat dissipation structure is formed on the base (1), which comprises vertical air ducts (4) and horizontal air ducts (5), and the vertical air ducts (4) and the horizontal air ducts (5) are connected; both ends of the horizontal air ducts (5) are connected to both sides of the base (1).

2. The roll shear cutter with a heat dissipation structure according to claim 1, characterized in that, The connecting structure comprises a protrusion (31) and a notch (21), and the notch (21) is arranged on both sides of the outer ring (2); the protrusion (31) is arranged on one side of the hard alloy blade (3) facing the outer ring (2), and the protrusion (31) and the notch (21) are matched.

3. The roll shear cutter with a heat dissipation structure according to claim 2, characterized in that, The edge line of the hard alloy blade (3) away from the central hole (13) is flush with the edge line of the corresponding outer ring (2) away from the central hole (13).

4. The roll shear cutter with a heat dissipation structure according to claim 1, characterized in that, The lateral vertical cross section of the outer ring (2) is trapezoidal outside the base (1), and the waist length distance gradually decreases away from the central hole (13).

5. The roll shear cutter with a heat dissipation structure according to claim 4, characterized in that, The hard alloy blade (3) comprises a connecting part (32), a connecting part (33) and an intermediate ring (34); the connecting part (33) and the connecting part (32) are respectively located on both sides of the outer ring (2), and are fixedly connected through the intermediate ring (34).

6. The roll shear cutter with a heat dissipation structure according to claim 1 or 4, characterized in that, The hard alloy blade (3) is provided with a positioning hole (35) on one side facing the base (1), and the positioning hole (35) is a threaded hole; The base (1) comprises a fixed ring part (11) and a pull groove (12), one end of the pull groove (12) extends to the central hole (13), the other end extends to the fixed ring part (11), a positioning bolt (7) is installed on the fixed ring part (11), the shank of the positioning bolt (7) passes through the fixed ring part (11) to the positioning hole (35) of the hard alloy blade (3), and the positioning bolt (7) and the positioning hole (35) are screw connected.

7. The roll shear cutter with a heat dissipation structure according to claim 2, characterized in that, The vertical air duct (4) is provided with an inclined air duct (8) away from both sides of the central hole (13) upward, and the inclined air duct (8) is connected with the notch (21).

8. The roll shear cutter with a heat dissipation structure according to claim 1, characterized in that, The edge line of the base (1) on both sides of the outer ring (2) is inclined from outside to inside, and the inclination angle is 60-85° with the vertical edge line.

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