Slitting lower knife and slitting device

Abstract

The utility model provides a lower slitting cutter and a slitting device.The lower slitting cutter comprises a cutter shaft and a plurality of annular cutters arranged outside the cutter shaft in a sleeving mode, and the annular cutters are arranged at intervals in the axial direction of the cutter shaft; each annular cutter comprises a mounting ring and a cutting ring, the mounting ring is arranged outside the cutter shaft in a sleeving mode, the position of the mounting ring can be adjusted, the cutting ring is located on the periphery of the mounting ring, the mounting ring is provided with a through threaded hole, and a fixing piece is arranged in the threaded hole so that the end of the fixing piece can provide abutting force for the peripheral wall of the cutter shaft.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of cutting equipment, in particular to a slitting lower knife and a slitting device. BACKGROUND

[0002] Thin type material wave absorbing material is applied in all aspects of life, and the existing curing machine usually cures a material with a wide width. After curing and forming, the wide wave absorbing material needs to be slitted into several narrow wave absorbing materials for winding. The structure of the existing curing machine is to place a slitting device at the rear end. According to the size of the winding required, the distance between the lower knives in the slitting device is adjusted, and then the wave absorbing material is cut into several narrow wave absorbing materials with the required width.

[0003] Since the original lower knife is arranged between two lower knives by using a circular ring gasket to adjust the distance between the lower knives, the width of the narrow wave absorbing material after slitting is controlled. Therefore, when the width of the slitted narrow wave absorbing material needs to be changed, the entire knife shaft needs to be lifted from the equipment, and then the corresponding gasket is replaced according to the width of the narrow wave absorbing material. The entire operation process is complicated, the product change efficiency is low, and the entire replacement needs at least two people to operate simultaneously. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the present application is to provide a slitting lower knife and a slitting device, which can quickly adjust the distance between the lower knives according to the width of the wave absorbing material required.

[0005] The embodiment of the present application is implemented as follows:

[0006] In a first aspect, the embodiment of the present application provides a slitting lower knife, which comprises a knife shaft and a plurality of annular knives sleeved outside the knife shaft. The plurality of annular knives are arranged at intervals along the axial direction of the knife shaft. Each annular knife comprises an adjustable-position mounting ring sleeved outside the knife shaft and a cutting ring located at the outer periphery of the mounting ring. The mounting ring is provided with a through threaded hole, and a fixing member is arranged in the threaded hole to provide an abutting force of the end of the fixing member to the peripheral wall of the knife shaft.

[0007] In the above technical solution, the plurality of annular knives are sleeved outside the knife shaft, and the width of the narrow wave absorbing material obtained by slitting can be changed by changing the distance between the annular knives. The mounting ring in the annular knife is used to connect with the knife shaft, and the cutting ring is used to cooperate with the upper knife to achieve cutting of the wave absorbing material. Since the mounting ring is provided with a through threaded hole, and a fixing member is arranged in the threaded hole to provide an abutting force of the end of the fixing member to the peripheral wall of the knife shaft, the relative movement between the annular knife and the knife shaft can be limited, thereby fixing the knife shaft and the annular knife.

[0008] The slitting lower knife provided by the technical scheme can fix the mounting ring to the knife shaft by screwing the fixing member, and can make the mounting ring move along the axial direction of the knife shaft by unscrewing the fixing member, thereby adjusting the distance between the annular knives. That is, the slitting lower knife provided by the technical scheme can adjust the distance between the annular knives by unscrewing the fixing member, thereby changing the width of the narrow wave-absorbing material obtained by slitting, and the operation is convenient.

[0009] In some optional embodiments, the inner wall of the mounting ring is provided with a groove, and a deformable ring piece is embedded in the groove. One end of the threaded hole penetrates to the groove bottom, so that the end of the fixing member abuts on the ring piece and provides the abutting force to the peripheral wall of the knife shaft.

[0010] In the technical scheme, the ring piece is arranged between the knife shaft and the fixing member, and the end of the fixing member abuts on the ring piece to provide the abutting force to the peripheral wall of the knife shaft, which can protect the knife shaft and effectively improve the damage of the surface of the knife shaft caused by the excessive concentration of the abutting force provided by the fixing member. The groove is arranged in the inner wall of the mounting ring to accommodate the ring piece, which can facilitate the movement of the ring piece along the axial direction of the knife shaft. Since the ring piece can be deformed, the ring piece can be easily installed in the groove.

[0011] In some optional embodiments, the ring piece is a ring structure with an axial through gap.

[0012] In the technical scheme, the ring piece has an axial through gap, which can facilitate the contraction and expansion of the ring piece, so that the ring piece can be more easily installed in the groove of the annular knife and the knife shaft, and can also limit the rotation of the ring piece with the mounting ring.

[0013] In some optional embodiments, the ring piece has elasticity and is configured to be installed in the groove by elastic compression, and then the shape is restored to be limited in the groove.

[0014] In the technical scheme, the ring piece is installed in the groove after elastic compression, and the shape is restored to be limited in the groove after being installed in the groove, so that the ring piece is not easy to fall off from the annular knife after being installed in the groove of the mounting ring.

[0015] In some optional embodiments, the ring piece is a metal structure.

[0016] In the technical scheme, the ring piece is a metal structure, which can have certain elasticity and strength to facilitate the installation in the groove of the mounting ring and to withstand the abutting force from the fixing member.

[0017] In some optional embodiments, the axial end surface of the cutting ring is a tapered surface, and the diameter of the tapered surface gradually increases in a direction from the mounting ring to the mounting ring.

[0018] In the above technical solution, the axial end surface of the cutting ring is a tapered surface, and the diameter of the tapered surface is larger at the position away from the mounting ring, so that the slitting is more convenient.

[0019] In some optional embodiments, the size of the mounting ring is larger than the size of the cutting ring in the axial direction.

[0020] In the above technical solution, since the size of the mounting ring is larger than the size of the cutting ring, even if the two mounting rings contact each other, there is a gap between the two cutting rings to avoid the upper slitting knife.

[0021] In some optional embodiments, the size of the mounting ring is larger than the size of the cutting ring by 2-6 mm in the axial direction; and the two side end surfaces of the mounting ring protrude from the end surfaces of the cutting ring.

[0022] In the above technical solution, the size of the mounting ring is larger than the size of the cutting ring by 2-6 mm, so as to leave a space for avoiding the upper slitting knife at one end of the cutting ring. Since the two side end surfaces of the mounting ring protrude from the end surfaces of the cutting ring, the two side end surfaces of the cutting ring can be matched with the upper slitting knife to achieve cutting, thereby improving the service life of the lower slitting knife.

[0023] In some optional embodiments, one side end surface of the mounting ring protrudes from the same side end surface of the cutting ring in the axial direction, and the two same side end surfaces are apart by 1-3 mm.

[0024] In a second aspect, the embodiments of the present application provide a slitting device, which comprises the lower slitting knife provided in the first aspect, and the end of the knife shaft is rotationally arranged in the fixed seat; and further comprises an upper slitting knife, which can be matched with the lower slitting knife to achieve cutting.

[0025] The slitting device provided by the above technical solution can conveniently adjust the distance between the annular knives, thereby changing the width of the narrow wave-absorbing material obtained by slitting, and the operation is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0027] Figure 1The installation schematic diagram of the slitting lower knife provided by the embodiment of the application is shown in the figure.

[0028] Figure 2 The schematic diagram of the ring knife provided by the embodiment of the application is shown in the figure.

[0029] Figure 3 The ring piece of the embodiment of the application.

[0030] Icon: 100-slitting lower knife; 110-knife shaft; 120-ring knife; 121-cutting ring; 122-mounting ring; 123-connection ring; 124-thread hole; 125-groove; 130-fixing piece; 140-ring piece; 200-fixing seat. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the application clearer, the technical scheme of the embodiments of the application will be described clearly and completely below in conjunction with the drawings in the embodiments of the application. Obviously, the described embodiments are some embodiments of the application, rather than all the embodiments of the application. The components of the embodiments of the application described and shown in the drawings can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the application without creative labor are within the scope of protection of the application.

[0033] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0034] In the description of the application, it should be noted that the orientation or positional relationship indicated by the terms “center”, “upper”, “lower”, “vertical”, “horizontal”, “inner”, “outer” and the like is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the application is used, and is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In addition, the terms “first”, “second”, “third” and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0035] In addition, the terms "horizontal", "vertical", "overhang" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that it is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0036] In the description of the present application, it should be further pointed out that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0037] The embodiment of the present application provides a slitting device, which comprises a slitting lower knife 100 and a slitting upper knife. The slitting upper knife and the slitting lower knife apply shearing force to the wave-absorbing material from both sides of the wave-absorbing material passing through, so as to realize the slitting of the wide wave-absorbing material into narrow wave-absorbing material. In the cutting process, the upper knife and the lower knife rotate, and the parts of the upper knife and the lower knife that cooperate with each other to realize cutting are annular. The slitting device provided by the present application can be used not only for slitting wave-absorbing material, but also for slitting other relatively hard and high-brittleness coiled materials.

[0038] Please refer to Figure 1 and Figure 2 The slitting lower knife 100 comprises a knife shaft 110 and a plurality of annular knives 120 sleeved outside the knife shaft 110, which can be two, three, four, five or more. The plurality of annular knives 120 are arranged in the axial direction of the knife shaft 110. It is not difficult to understand that the distance between the two adjacent annular knives 120 is matched with the size of the material to be slitted. The annular knife 120 comprises a position-adjustable mounting ring 122 sleeved outside the knife shaft 110 and a cutting ring 121 located at the outer periphery of the mounting ring 122; wherein the mounting ring 122 serves to connect with the knife shaft 110, and the cutting ring 121 serves to cooperate with the slitting upper knife to realize cutting.

[0039] Further, the mounting ring 122 is provided with a through threaded hole 124, and a fixing member 130 is arranged in the threaded hole 124 to enable the end of the fixing member 130 to abut against the circumferential wall of the cutter shaft 110. The end of the fixing member 130 can be screwed into the threaded hole 124 to abut against the circumferential wall of the cutter shaft 110, thereby limiting the relative movement between the cutter shaft 110 and the mounting ring 122, and fixing the annular cutter 120 to the cutter shaft 110. The fixing member 130 can be unscrewed to enable the mounting ring 122 to move along the axial direction of the cutter shaft 110, thereby adjusting the distance between the annular cutters 120. That is, the slitting lower cutter 100 provided by the technical scheme can be used to adjust the distance between the annular cutters 120 by unscrewing the fixing member 130, and then change the width of the narrow wave-absorbing material obtained by slitting, which is convenient to operate.

[0040] The slitting device provided by the present application can also be used to position the annular cutters 120. After the position of the annular cutters 120 in the slitting lower cutter 100 is determined, the slitting upper cutter is moved to be close to the slitting lower cutter 100. The method for adjusting the annular cutters 120 of the slitting device provided by the present application can be as follows: a standard gauge is selected according to the slitting width of the product, the gauge is placed against the end surface of the mounting ring 122 of one annular cutter 120, then the fixing member 130 of another annular cutter 120 is unscrewed, the movable annular cutter 120 is moved to be close to the gauge, then the fixing member 130 of the annular cutter 120 is screwed, and the gauge is removed. The gauge used can be a semicircular ring, so the cutter shaft 110 does not need to be disassembled during the use of the gauge.

[0041] In some embodiments, the threaded hole 124 can only pass through the mounting ring 122. In other embodiments, the threaded hole 124 can pass through both the mounting ring 122 and the cutting ring 121. That is, as shown in FIG. 2, one end of the threaded hole 124 is open on the outer circumferential surface of the cutting ring 121, and the other end of the threaded hole 124 is open on the surface of the mounting ring 122 facing the cutter shaft 110, so that the fixing member 130 can be screwed or unscrewed from the outside of the annular cutter 120. Figure 2

[0042] It can be understood that the fixing member 130 has external threads, and the fixing member 130 can be a common threaded fastener such as a bolt, a stud, or a set screw.

[0043] In the above embodiments, the end of the fixing member 130 abutting against the circumferential wall of the cutter shaft 110 includes the case where the end of the fixing member 130 directly contacts the circumferential wall of the cutter shaft 110, and also includes the case where another structure is arranged between the end of the fixing member 130 and the circumferential wall of the cutter shaft 110, and the structure also abuts against the cutter shaft 110 under the abutting force of the end of the fixing member 130.​

[0044] Further, in some embodiments, the inner wall of the mounting ring 122 is provided with a groove 125, and a deformable ring piece 140 is embedded in the groove 125, and one end of the threaded hole 124 penetrates to the groove bottom of the groove 125, so that the end of the fixing member 130 abuts on the ring piece 140, and provides an abutting force to the peripheral wall of the cutter shaft 110.

[0045] In the above-mentioned embodiments, since the ring piece 140 can be deformed, it is convenient to install the ring piece 140 into the groove 125. By providing the groove 125 on the inner wall of the mounting ring 122 to accommodate the ring piece 140, it is convenient to adjust the position of the annular cutter 120, so that the position of the ring piece 140 changes. By completely accommodating the ring piece 140 in the groove 125 without protruding from the inner circumferential surface of the mounting ring 122, on the one hand, the diameter of the inner circumferential surface of the mounting ring 122 can be designed to be equivalent to the diameter of the cutter shaft 110, so as to maintain the stable rotation of the cutter shaft 110 during cutting; on the other hand, it can reduce the scratch of the surface of the cutter shaft 110 when adjusting the position of the annular cutter 120. And one end of the threaded hole 124 penetrates to the groove bottom of the groove 125, and the end of the fixing member 130 abuts on the ring piece 140, so as to provide an abutting force to the peripheral wall of the cutter shaft 110, avoiding the end of the fixing member 130 directly abutting on the cutter shaft 110, so that the abutting force acting on the cutter shaft 110 is more dispersed, thereby effectively improving the situation that the surface of the cutter shaft 110 is damaged due to the too concentrated abutting force provided by the fixing member 130.

[0046] In some embodiments, as shown in Figure 3 the ring piece 140 is a ring structure with an axially through gap. Since the ring piece 140 is a ring structure, the ring piece 140 can be contracted and expanded, so that the ring piece 140 can be more conveniently installed in the groove 125 of the annular cutter 120 and mounted on the cutter shaft 110. Further, the gap can only account for 1 / 20, or 1 / 15, or 1 / 10, or 1 / 5, etc. of the circumference of the ring piece 140 in the circumferential direction of the ring piece 140.

[0047] Further, in some embodiments, the groove 125 provided on the inner wall of the mounting ring 122 can be a complete, closed annular structure, i.e., the axis of the groove 125 is parallel to or coincides with the axis of the mounting ring 122. In other embodiments, the groove 125 can also be a non-closed annular structure, i.e., the shape of the groove 125 can be adapted to the ring piece 140 with a notch, as long as the groove 125 can accommodate the ring piece 140. It is not difficult to understand that after the ring piece 140 is loaded into the groove 125, the non-closed part of the groove 125 is located in the notch of the ring piece 140, which can limit the rotation of the ring piece 140 and also can position the ring piece 140, so that the end of the fixing member 130 can accurately contact the ring piece 140.

[0048] Further, in some embodiments, the ring piece 140 has elasticity and is configured to be loaded into the groove 125 by elastic compression and then restore the shape to be limited in the groove 125. In this embodiment, since the ring piece 140 is loaded into the groove 125 after elastic compression and can restore the shape to be limited in the groove 125 after being loaded into the groove 125, the ring piece 140 is not easy to fall off from the annular cutter 120 after being loaded into the groove 125 of the mounting ring 122. The ring piece 140 can be a metal structure, which has good elasticity when the metal is bent into an annular structure, and the metal structure has large strength and is not easy to be damaged after bearing a large abutting force from the abutting member. Specifically, the ring piece 140 can be an iron structure, a stainless steel structure, etc.

[0049] In some embodiments, the end surface of the cutting ring 121 is a tapered surface, and the diameter of the tapered surface gradually increases in the direction from the mounting ring 122 to the direction away from the mounting ring 122. That is, the end surface of the cutting ring 121 is concave inward, which can be more conducive to the slitting process. Of course, in some embodiments, the end surface of the cutting ring 121 can also be a flat surface.

[0050] In some embodiments, in the axial direction, the size of the mounting ring 122 is larger than the size of the cutting ring 121. The axial direction is the axial direction of the mounting ring 122, which is parallel to the axial direction of the cutting ring 121 and the axial direction of the annular cutter 120. Since the size of the mounting ring 122 is larger than the size of the cutting ring 121, even if the two mounting rings 122 contact each other, there is a gap between the two cutting rings 121, so as to avoid the slitting upper cutter, and the cutting rings 121 in the adjacent two annular cutters 120 can be avoided from colliding with each other to affect the service life of the annular cutter 120. In other embodiments, the size of the cutting ring 121 in the axial direction can also be consistent with the size of the mounting ring 122.

[0051] Further, in some embodiments, the mounting ring 122 has a size larger than that of the cutting ring 121 by 2-6 mm in the axial direction; and both side end faces of the mounting ring 122 protrude beyond the end faces of the cutting ring 121. The mounting ring 122 has a size larger than that of the cutting ring 121 by 2-6 mm, and both side end faces of the mounting ring 122 protrude beyond the end faces of the cutting ring 121, so that both ends of the cutting ring 121 are left with space for avoiding the upper slitting knife, and both side end faces of the cutting ring 121 can be matched with the upper slitting knife to realize cutting, thereby improving the service life of the lower slitting knife 100.

[0052] Further, in the axial direction, one side end face of the mounting ring 122 protrudes beyond the same side end face of the cutting ring 121, and the distance between the two same side end faces is 1-3 mm. That is, the distance between the same side end faces of the mounting ring 122 and the cutting ring 121 is 1-3 mm, and can be 1 mm, 2 mm or 3 mm.

[0053] In other embodiments, only one side end face of the mounting ring 122 can protrude beyond the same side end face of the cutting ring 121, and the other side end face of the mounting ring 122 does not protrude beyond the same side end face of the cutting ring 121.

[0054] Further, in some embodiments, a connecting ring 123 is further arranged between the mounting ring 122 and the cutting ring 121, the connecting ring 123 has a size smaller than that of the cutting ring 121 in the axial direction, and both end faces of the connecting ring 123 are lower than the end faces of the cutting ring 121. In other embodiments, the cutting ring 121 can be directly connected to the outer periphery of the mounting ring 122.

[0055] In some embodiments of the present application, the slitting device further comprises a fixing seat 200, and the end of the knife shaft 110 is rotatably arranged in the fixing seat 200. Specifically, both ends of the knife shaft 110 are connected with one fixing seat 200, and a bearing is arranged between the knife shaft 110 and the fixing seat 200, so that the knife shaft 110 rotates relative to the fixing seat 200. In the cutting state, the edge of the upper slitting knife extends below the outer peripheral surface of the cutting ring 121 of the annular knife 120, that is, in the process of mounting the upper slitting knife, the upper slitting knife can be first moved along the radial direction of the annular knife 120 to the position of the outer peripheral surface of the cutting ring 121, and then advanced by 1-2 mm in the forward direction, and then moved along the radial direction of the annular knife 120, so that the side face of the annular knife 120 contacts the cutting ring 121.

[0056] The above descriptions are only the preferred embodiments of the present application, and are not intended to limit the present application. The present application can have various modifications and changes for those skilled in the art. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A slitting undercutter characterized by, The knife shaft and a plurality of annular knives sleeved outside the knife shaft, the plurality of annular knives are arranged at intervals along the axial direction of the knife shaft; each of the annular knives comprises a position-adjustable mounting ring sleeved outside the knife shaft and a cutting ring located at the outer periphery of the mounting ring, the mounting ring is provided with a through threaded hole, and a fixing member is arranged in the threaded hole to enable the end of the fixing member to abut against the peripheral wall of the knife shaft; An inner wall of the mounting ring is provided with a groove, the groove is an annular structure, a deformable ring piece is embedded in the groove, and one end of the threaded hole penetrates to the groove bottom, so that the end of the fixing member abuts against the ring piece and provides the abutting force to the peripheral wall of the knife shaft; The ring piece is a ring-shaped structure with an axially-through gap, the ring piece has elasticity and is configured to be loaded into the groove by elastic compression and then recover to be limited in the groove.

2. The slitting undercutter of claim 1 wherein, The ring piece is a metal structure.

3. The slitting undercutter of claim 1 wherein, The axial end surface of the cutting ring is a conical surface, and the diameter of the conical surface gradually increases from the direction close to the mounting ring to the direction away from the mounting ring.

4. The slitting undercutter of claim 1 wherein, In the axial direction, the size of the mounting ring is greater than the size of the cutting ring.

5. The slitting undercutter of claim 4 wherein, In the axial direction, the size of the mounting ring is greater than the size of the cutting ring by 2-6 mm; both side end surfaces of the mounting ring protrude from the end surfaces of the cutting ring.

6. The slitting undercutter of claim 5 wherein, In the axial direction, one side end surface of the mounting ring protrudes from the same side end surface of the cutting ring, and the distance between the two same side end surfaces is 1-3 mm.

7. A slitting device, characterized in that The slitting lower knife comprises the slitting lower knife according to any one of claims 1-6, and the end of the knife shaft is rotationally arranged in a fixed seat; the slitting upper knife is further included, and the slitting upper knife can realize cutting in cooperation with the slitting lower knife.

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