Movable slitting knife

Abstract

The utility model discloses a movable slitting cutter, which can be adaptively adjusted according to the width of a material strip, so that the generality of the slitting cutter is good, and the material cost of a die is reduced. The device comprises two mounting seats; a central shaft; each cutter body comprises a sleeve and blades annularly distributed on the periphery of the sleeve, the blade points of the blades protrude outwards in the radial direction, and at least one positioning hole penetrating through the thickness of the sleeve in the radial direction is formed in the outer circumference of the sleeve; the two ends of the center shaft are fixedly connected with corresponding installation bases respectively, the center shaft is sleeved with a plurality of sets of cutter bodies in the length direction, a sleeve of each set of cutter bodies is arranged on the center shaft in a sleeved mode, a lock accessory penetrates through a positioning hole and then is attached to the outer surface of the center shaft in a pressed mode, and the distance between cutter points of every two adjacent blades is the slitting distance.

Description

Technical Field

[0001] The utility model relates to the technical field of film material slitting, in particular to a movable slitting knife. Background Art

[0002] Before product processing, the die-cutting industry needs to cut the raw materials into small-sized materials. The width of the material strips will be defined according to the width of the product. There are many types of materials required for a finished product, which will lead to an increase in the number of molds ordered and increase processing costs. Therefore, it is urgent to develop a universal slitting knife. Summary of the invention

[0003] In view of the above problems, the utility model provides a movable slitting knife, which can be adapted and adjusted according to the width of the material strip, thereby making the slitting knife more versatile and reducing the material cost of the mold.

[0004] A movable slitting knife, characterized in that it comprises:

[0005] Two mounting bases;

[0006] Central axis;

[0007] A plurality of groups of blade bodies, each group of blade bodies comprises a sleeve and blades arranged around the outer circumference of the sleeve, the blade edges of the blades are arranged to protrude radially outward, and the outer circumference of the sleeve is provided with at least one positioning hole that radially penetrates the thickness of the sleeve;

[0008] The two ends of the central axis are respectively fixed with corresponding mounting seats, and the central axis is sleeved with a plurality of blade groups along the length direction. The sleeve of each blade group is sleeved on the central axis, and the locking accessory passes through the positioning hole and is pressed onto the outer surface of the central axis. The spacing between the blade edges of adjacent blades is the strip spacing.

[0009] It is further characterized by:

[0010] The distances between all adjacent blades are set to be the same, so that the material is divided into strips at equal intervals;

[0011] The distances between adjacent blades are not exactly the same, so that the material can be arranged in strips according to actual needs;

[0012] The outer ring surface of the central shaft is provided with a positioning inner groove along the axial length direction, and the positioning inner groove is used to place the inner convex end of the locking attachment, so as to ensure that the knife body will not rotate after being locked;

[0013] The sleeve is a split structure, which includes a main body sleeve and a mounting ring sleeve, and the mounting ring sleeve and the main body sleeve are combined to form a knife seat mounting cavity of the knife body;

[0014] The mounting ring sleeve is provided with two circles of positioning holes around the circumference, which are the first positioning hole group and the second positioning hole group. The first positioning hole group is located at the radial inner end ring line, and the second positioning hole group is located at the radial outer end ring line. After the knife seat of the knife body is placed in the knife seat mounting cavity, the first positioning hole group and the second positioning hole group are fixed to the corresponding inner concave threaded holes of the main body sleeve by fasteners, which ensures that only the blade needs to be replaced to complete the replacement operation of the slitting knife body, thereby reducing the use cost;

[0015] The annular blade seat of the blade is provided with a plurality of through guide holes, and the through guide holes are arranged corresponding to the corresponding positions of the second positioning hole group, so as to ensure the stable and reliable assembly of the blade body;

[0016] The inner ring contact surface of the mounting ring sleeve and the main body sleeve is an inclined surface, which ensures that the assembly and positioning of the two are fast and reliable;

[0017] The number of the blades is 2 to 8;

[0018] The outer end side of the mounting seat is protruded with a connecting shaft, and the connecting shaft is inserted into the bearing in the corresponding bearing mounting seat on the outside. The inner end of the mounting seat is fixedly connected to the corresponding end face of the central shaft by means of ring-shaped bolts, which ensures that the entire mechanism can be quickly disassembled and assembled.

[0019] After adopting the above technical solution, the blade spacing of the movable slitting knife can be moved and adjusted according to the required material specifications. When adjusted to the required specification value, the large specification of the overall material can be slit into the required small specifications. The movable slitting knife is easy to adjust and can be adjusted at any time according to the required specifications, which greatly improves production efficiency, saves mold costs, and can meet the needs of rapid sample delivery and mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the main structure of the utility model (partial cross-section);

[0021] Figure 2 for Figure 1 Schematic diagram of AA cross-sectional structure;

[0022] Figure 3 It is a longitudinal section view of the knife body;

[0023] Figure 4 for Figure 3 A partial enlarged view of point B;

[0024] The names corresponding to the serial numbers in the figure are as follows:

[0025] Mounting seat 10, connecting shaft 11, center shaft 20, positioning inner groove 21, knife body 30, sleeve 40, positioning hole 401, main body sleeve 41, mounting ring sleeve 42, first positioning hole group 421, second positioning hole group 422, knife seat mounting cavity 43, inclined surface 44, blade 50, blade edge 51, knife seat 52, locking bolt 60. DETAILED DESCRIPTION

[0026] A movable slitting knife, see Figure 1-Figure 4 , which includes two mounting seats 10, a central axis 20, and a plurality of sets of cutter bodies 30;

[0027] Each set of blade bodies 30 includes a sleeve 40 and blades 50 arranged around the outer circumference of the sleeve. The blade edges 51 of the blades 50 are arranged to protrude radially outward. A positioning hole 401 is arranged on the outer circumference of the sleeve 40 and radially penetrates the thickness of the sleeve. In specific implementation, the positioning hole 401 is arranged at the center position area in the thickness direction of the sleeve to ensure uniform force on both sides in the thickness direction.

[0028] The two ends of the central axis 20 are respectively fixed with corresponding mounting seats 10. The central axis 20 is sleeved with a plurality of groups of blade bodies 30 along the length direction. The sleeve 40 of each group of blade bodies 30 is assembled and sleeved on the central axis 20. The locking bolt 60 passes through the positioning hole 401 and is pressed onto the outer surface of the central axis 20. The spacing between the blade edges 51 between adjacent blades 50 is the strip spacing.

[0029] In specific implementation, the following two operations can be performed according to the material segmentation situation:

[0030] a. The distances between all adjacent blades are set to be the same, and the material is divided into strips at equal intervals;

[0031] b. The distances between adjacent blades are not exactly the same, so that the material can be arranged in strips according to actual needs.

[0032] In a specific implementation, the outer ring surface of the central shaft 20 is provided with a positioning inner groove 21 along the axial length direction, and the positioning inner groove 21 is used to place the inner convex end of the locking bolt 60, which ensures that the blade body will not rotate after being locked. The locking bolt 60 is specifically a bolt without a bolt head. The main body of the locking bolt 60 is located in the positioning hole 401 in the locked state, so that the locking bolt 60 will not interfere with the normal striping operation of the blade 51;

[0033] The inner convex end of the locking bolt 60 is an arc head structure, and the positioning inner groove is an inner groove that is arranged in the shape of the arc head structure, so as to ensure stable and reliable locking.

[0034] In a specific implementation, the sleeve 40 is a split structure, which includes a main body sleeve 41 and a mounting ring sleeve 42. The mounting ring sleeve 42 and the main body 41 are combined to form a knife seat mounting cavity 43 of the knife body;

[0035] The mounting ring 42 is provided with two circles of positioning holes, namely a first positioning hole group 421 and a second positioning hole group 422. The first positioning hole group 421 is located at the radial inner end ring line, and the second positioning hole group 422 is located at the radial outer end ring line. After the knife seat 52 of the knife body 50 is placed in the knife seat mounting cavity 43, the first positioning hole group 421 and the second positioning hole group 422 are fixed to the corresponding inner concave threaded holes of the main body sleeve 41 by fasteners, which ensures that only the blade 50 needs to be replaced to complete the replacement operation of the knife body 30 of the slitting knife, thereby reducing the use cost;

[0036] A plurality of through guide holes are arranged on the annular blade seat 52 of the blade 50 , and the through guide holes are arranged corresponding to the corresponding positions of the second positioning hole group 422 , which ensures that the assembly of the blade 50 is stable and reliable.

[0037] In a specific embodiment, the inner ring contact surface of the mounting ring sleeve 42 and the main body sleeve 41 is a bevel 44, which ensures that the assembly and positioning of the two are fast and reliable.

[0038] In a specific embodiment, the number of the blade bodies 30 is 5; a connecting shaft 11 is protruding from the outer end side of the mounting seat 10, and the connecting shaft 11 is inserted into the bearing in the corresponding bearing mounting seat on the outside, and the inner end of the mounting seat 10 is fixedly connected to the corresponding end face of the center shaft 20 by a ring-shaped bolt, which ensures that the entire mechanism can be quickly disassembled and assembled.

[0039] Its working principle is as follows: according to the required material specifications, the distance between the blades of the movable slitting knife is moved and adjusted to the required specification value, so that the large specifications of the overall material can be slit into the required small specifications; the movable slitting knife is easy to adjust and can be adjusted at any time according to the required specifications, which greatly improves production efficiency, saves mold costs, and can meet the needs of rapid sample delivery and mass production.

[0040] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0041] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A movable slitting knife, characterized in that: It includes: Two mounting bases; Central axis; A plurality of groups of blade bodies, each group of blade bodies comprises a sleeve and blades arranged around the outer circumference of the sleeve, the blade edges of the blades are arranged to protrude radially outward, and the outer circumference of the sleeve is provided with at least one positioning hole that radially penetrates the thickness of the sleeve; The two ends of the central axis are respectively fixed with corresponding mounting seats, and the central axis is sleeved with a plurality of blade groups along the length direction. The sleeve of each blade group is sleeved on the central axis, and the locking accessory passes through the positioning hole and is pressed onto the outer surface of the central axis. The spacing between the blade edges of adjacent blades is the strip spacing.

2. The movable slitting knife according to claim 1, characterized in that: The distances between all adjacent blades are set to be the same, so that the material is divided into strips at equal intervals.

3. The movable slitting knife according to claim 1, characterized in that: The distances between adjacent blades are not exactly the same, so that the material can be arranged in strips according to actual needs.

4. The movable slitting knife according to claim 1, characterized in that: The outer ring surface of the central shaft is provided with a positioning inner groove along the axial length direction, and the positioning inner groove is used for placing the inner convex end of the locking accessory.

5. The movable slitting knife according to claim 1, characterized in that: The sleeve is a split structure, which includes a main body sleeve and a mounting ring sleeve. The mounting ring sleeve and the main body sleeve are combined to form a knife seat mounting cavity of the knife body.

6. The movable slitting knife according to claim 5, characterized in that: The mounting ring sleeve is circumferentially provided with two circles of positioning holes, which are the first positioning hole group and the second positioning hole group. The first positioning hole group is located on the radial inner end ring line, and the second positioning hole group is located on the radial outer end ring line. After the knife seat of the knife body is placed in the knife seat mounting cavity, the first positioning hole group and the second positioning hole group are fixed to the corresponding inner concave threaded holes of the main sleeve by fasteners.

7. The movable slitting knife according to claim 6, characterized in that: A plurality of through guide holes are arranged on the annular blade seat of the blade, and the through guide holes are arranged corresponding to the corresponding positions of the second positioning hole group.

8. The movable slitting knife according to claim 5, characterized in that: The inner ring contact surfaces of the mounting ring sleeve and the main body sleeve are inclined surfaces.

9. The movable slitting knife according to claim 1, characterized in that: The number of the blade bodies is 2 to 8.

10. The movable slitting knife according to claim 1, characterized in that: The outer end side of the mounting seat is protruded with a connecting shaft, and the connecting shaft is inserted into the bearing in the corresponding bearing mounting seat outside. The inner end of the mounting seat is fixedly connected to the corresponding end face of the central shaft by means of circular bolts.

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