CN220161094U - Cutting die bending and shearing die - Google Patents

Abstract

The utility model discloses a cutting die bending and shearing die, which comprises: an inner mold and an outer mold; the outer die is sleeved on the outer side of the inner die, the inner die is provided with at least one cutter gap for feeding a cutter material, each cutter gap is internally provided with at least one group of clearance holes, the outer die is movably arranged on the outer side of the inner die, the inner die can rotate or slide relative to the outer die, the clearance holes are formed in the cutter gaps, the whole flatness of the bent cutter material is realized, the die cutting performance of the cutter material is improved, the die cutting effect is ensured, the inner die is not required to be polished, the service life of the die is prolonged, the manual polishing procedure is omitted, and the use is more convenient; the inner die and the outer die are arranged in a sliding manner, so that the bending or shearing of the cutter material is ensured not to be in conflict.

Description

Cutting die bending and shearing die

Technical Field

The utility model relates to the technical field of dies, in particular to a cutting die bending and shearing die.

Background

In general, complex patterns of cartons, paper boxes, plastics and various artworks are produced, and the processes of die cutting, indentation and the like are carried out on raw materials by using corresponding cutting dies, so that mass and efficient production can be realized. And the production of the cutting die requires the cutting forming processing of a strip-shaped steel knife by using a special cutting die processing machine.

In the production and processing process of the cutting die, bending and shearing operations are generally carried out by adopting a cutter bending machine according to requirements, and the bending and shearing are integrated into a whole by the existing cutter bending machine so as to ensure shearing accuracy, namely, the effect that one set of die can be used for bending and shearing is achieved.

As in the chinese patent application, CN202122140934.3 (a cutter), which includes an inner die and an outer die, wherein the top of the outer die is used for bending the cutter material, the bottom is used for matching with the inner die to realize cutting of the cutter material, and when in use, bending or cutting can be realized by lifting the whole die, and the cutting position is accurate; however, in practical use, the inventor finds that the width of the knife seam of the inner die cannot be too wide, which leads to inaccurate bending position of the knife during bending, so the knife seam is usually only larger than the width of 0.1 millimeter of the thickness of the knife, at the moment, the thickness of the knife has errors in the production process, if bending is performed at the position, the bottom end and the top end of the knife have different widths, so uneven stress leads to bending of the knife in the height direction after bending, the bending can influence the overall flatness of the knife die, the die cutting performance is reduced, and the quality of products is influenced; the existing solution is to grind the top end or the bottom end of the cutter gap through the file to increase the width of the cutter gap so as to ensure that the stress on the top end and the bottom end of the cutter material is uniform, but the method is easy to shorten the service life of the die, because the width of the cutter gap is wider after grinding for a certain number of times, the bending inaccuracy can occur at the moment, the die cannot be used, the die needs to be replaced, the grinding by the file is very difficult to be conducted by the experience of staff, the grinding fire is required to be controlled, or the die is easy to be directly damaged.

Accordingly, there is a need to design a die bending and shearing die that overcomes one or more of the above-described deficiencies of the prior art.

Disclosure of Invention

The technical scheme adopted by the utility model for achieving the technical purpose is as follows: a die bending and shearing die comprising: an inner mold and an outer mold; the outer die is sleeved on the outer side of the inner die, and is characterized in that the inner die is provided with at least one knife slot for feeding a knife material, at least one group of clearance holes are formed in each knife slot, the outer die is movably arranged on the outer side of the inner die, and the inner die can rotate and/or slide relative to the outer die.

In a preferred embodiment, the avoidance holes are concave, and each set of avoidance holes is provided with two avoidance holes, which are respectively located at two sides of the knife gap and are oppositely arranged.

In a preferred embodiment, the avoidance spaces are provided with two groups, which are respectively positioned at two ends of the knife gap.

In a preferred embodiment, each of said sipes comprises: the device comprises an inlet and an outlet, wherein the two sides of the outlet are respectively provided with an empty chute, and the two sides of the inlet are respectively provided with a guiding slope.

In a preferred embodiment, two knife slits are arranged, the two knife slits are on the same vertical line, the widths of the two knife slits are not equal, and the two knife slits are communicated.

In a preferred embodiment, stress holes are respectively formed at two ends of each knife slot.

In a preferred embodiment, the bottom of each of the slots is provided with a shearing area.

In a preferred embodiment, a bending opening is formed in the top of the outer die, the upper end and the lower end of the bending opening are equal in width, a shear opening is formed below the bending opening, the upper end width of the shear opening is larger than the lower end width, and the lower end width of the shear opening is equal to or larger than the width of the knife gap.

In a preferred embodiment, the outer mold is further provided with a relief opening corresponding to the bending opening and the shear opening, and the width of the relief opening is larger than that of the bending opening.

In a preferred embodiment, the bottom of the outer mould is flat.

The beneficial effects of the utility model are as follows: by arranging the clearance gaps in the knife gaps, the overall flatness of the knife materials after bending is realized, the die cutting performance of the knife materials is improved, the die cutting effect is ensured, the inner die is not required to be polished, the service life of the die is prolonged, the manual polishing procedure is omitted, and the use is more convenient; the inner die and the outer die are arranged in a sliding manner, so that the bending or shearing of the cutter material is ensured not to be in conflict.

Drawings

FIG. 1 is a block diagram of the present utility model;

FIG. 2 is an exploded view I of the present utility model;

FIG. 3 is an exploded view II of the present utility model;

FIG. 4 is an exploded view III of the present utility model;

FIG. 5 is an enlarged view of the utility model at A in FIG. 2;

FIG. 6 is a cross-sectional view of an inner mold of the present utility model;

FIG. 7 is a schematic cross-sectional view of the mating inner and outer dies of FIG. 1 in the shearing position A-A in accordance with the present utility model;

FIG. 8 is a schematic cross-sectional view of the mating of the inner and outer dies in the bent position B-B of FIG. 1 in accordance with the present utility model.

In the figure:

10. an inner mold; 11. cutting; 12. avoidance of gaps; 13. an inlet; 14. an outlet; 15. an empty chute; 16. a guide ramp; 17. stress holes; 18. a shearing zone;

20. an outer mold; 21. bending openings; 22. a cutout; 23. and an avoidance port.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

The utility model provides a cutter bending and shearing die, which is characterized in that the thickness of the cutter is different from other positions when the cutter is produced, the thickness of the cutter is different from the thickness of the cutter at the top or the bottom or the middle of the cutter, if the bottom is thicker, the extrusion force of a cutter gap 11 is larger than the stress of the top because of the stress of the bottom when the cutter is bent, the cutter is bent upwards, if the top is thicker, the cutter is bent downwards, and the thickness of the middle and the whole area are thick, and the bending situation can occur, so as to solve the situation, and the cutter bending and shearing die comprises the following components: an inner mold 10 and an outer mold 20; the outer die 20 is sleeved on the outer side of the inner die 10, and is characterized in that the inner die 10 is provided with at least one knife slot 11 for feeding a knife material, each knife slot 11 is internally provided with at least one group of clearance holes 12, the outer die 20 is movably arranged on the outer side of the inner die 10, and the inner die 10 can rotate and/or slide relative to the outer die 20;

specifically, at least one group of clearance gaps 12 are formed in the cutter gap 11, the clearance gaps 12 play a role in expanding the width of the cutter gap 11, when the thickness of part of the cutter material exceeds a preset value, in order to prevent the position of the thicker cutter material from being stressed unevenly with other positions during bending, the inner mold 10 can be lifted, the clearance gaps 12 correspond to the part of the cutter material exceeding the preset value thickness, the inner mold 20 is positioned in the clearance gaps 12, the width of the cutter gap 11 is expanded due to the arrangement of the clearance gaps 12, the side wall of the cutter gap 11 cannot be extruded on the side wall of the cutter material, so that the stress of the cutter material is reduced, the stress of the part and the stress of other positions are ensured to be within a preset range, bending of the cutter material cannot occur in the height direction when the outer mold 20 is rotated at this time, wherein the inner mold 10 is required to be changed in the vertical direction due to the fact that the outer mold 20 integrates the functions of bending and shearing, so that the thicker outer mold 10 corresponds to the clearance gaps 12, namely the inner mold 10 can vertically slide relatively to the outer mold 20 according to the requirement, the inner mold 20 can rotate relatively to the requirement, the inner mold 10 can only vertically slide relatively, the inner mold 20 can not collide relatively to the inner mold 10 vertically, and the shearing effect can not be caused when the inner mold is lifted and lifted relatively, and the shearing effect is not simultaneously, and the inner mold 20 can not be lifted and lowered relatively, and the bending effect is not easily caused.

It should be noted that, when the whole area of the cutter is thicker, the avoidance space 12 cannot be set to be equal to the cutter, so that the measure of moving the inner die 10 is not adopted, the condition of uneven stress is avoided, and the cutter can be directly bent; because the outer mold 20 and the inner mold 10 can move relatively, the outer mold 20 and the inner mold 10 are connected with a driving device respectively to realize independent movement.

Further, in this embodiment, the avoidance spaces 12 are concave, and each set of the avoidance spaces 12 is provided with two avoidance spaces, which are respectively located at two sides of the knife gap 11 and are oppositely arranged;

specifically, each group of clearance gaps 12 is provided with two clearance gaps, the clearance gaps are respectively positioned on two sides of the cutter gap 11, the two clearance gaps 12 are corresponding, and meanwhile, the clearance gaps 12 are concave, so that the distance between the two opposite clearance gaps 12 is larger than the width of the cutter gap 11, the cutter material with the adaptive thickness change is realized, and the force of the cutter gap 11 on the cutter material is reduced.

It should be noted that, the recess value of the avoidance space 12 needs to be determined according to the error value of the cutter, and if the thickness error of the cutter is positive or negative 0.03 mm, the recess value of the avoidance space 12 needs to be greater than 0.03 mm.

Further, the avoidance space 12 is provided with two groups, which are respectively positioned at two ends of the knife gap 11;

specifically, in order to avoid the need of moving the inner mold 10 by a larger distance, for example, the avoidance space 12 is arranged at the top end of the cutter gap 11, and the thicker cutter material is positioned at the bottom, the inner mold 10 is required to slide downwards by a larger distance, so that the avoidance space 12 corresponds, and at the moment, because the travel of the inner mold 10 is overlarge, larger space needs to be reserved, and the structural design and the compactness of the equipment are inconvenient, two groups of avoidance spaces 12 are arranged and are respectively positioned at two ends of the cutter gap 11, so that the moving travel of the inner mold 10 is reduced, and the compactness of the equipment is improved.

Further, in this embodiment, each of the slits 11 includes: an inlet 13 and an outlet 14, wherein the two sides of the outlet 14 are respectively provided with an empty chute 15, and the two sides of the inlet 13 are respectively provided with a guide slope 16;

specifically, the slot 11 is provided with an inlet 13 at one end where the cutter enters, an outlet 14 is arranged at one side where the cutter exits, the inlet 13 is used for enabling the cutter to smoothly enter the slot 11, guide slopes 16 are arranged at two ends of the inlet 13, and the two guide slopes 16 are in a horn shape in section, namely, the sections are large outside and small inside, so that the cutter can be ensured to smoothly enter the slot 11 even if the cutter swings left and right in the conveying process; the clearance chute 15 is arranged on the outlet 14, and the clearance chute 15 has the function of enabling the outer wall of the position of the inner die 10 to be spaced from the inner wall of the outer die 20, so that when the outer die 20 rotates, the shearing force generated when the outer die 20 rotates relative to the inner die 10 is reduced due to the spaced arrangement of the inner die 10 and the outer die 20, and the shearing effect during bending is avoided; meanwhile, the cutter material can be bent according to the requirement of the die cutting shape, the bending angles are different, the clearance chute 15 is further used for improving the bending angle, and due to the existence of the clearance chute 15, the cutter material is bent in a sufficient space to deform, so that the condition that the cutter material cannot be bent due to the limitation of the outer wall of the inner die 10 when the cutter material is bent in a large angle is avoided, and the conditions of die explosion and cutter breakage occur.

Further, two knife slits 11 are arranged, the two knife slits 11 are on the same vertical line, the widths of the two knife slits 11 are unequal, and the two knife slits 11 are communicated;

specifically, because the thickness of the cutter material can be changed according to the use requirement, two cutter materials with different thicknesses are adapted to one set of die, two cutter slits 11 are arranged on the inner die 10, the two cutter slits 11 are positioned in the same vertical line on the inner die 10, the widths of the two cutter slits 11 are unequal, and one cutter material is bigger and smaller, so that after the cutter material with the model is replaced, the cutter materials can be matched only by lifting the inner die 10, one end of each cutter slit 11 adjacent to the other is communicated, and the cutter material can be conveniently lifted and changed to select the cutter slit 11 when being positioned in the cutter slit 11.

Further, in this embodiment, stress holes 17 are respectively formed at two ends of each slot 11;

specifically, since the inner mold 10 is supported by steel material and the slit 11 is required to be grooved in the steel material, the cross-sectional shape of the steel material is changed due to the presence of the groove hole, resulting in uneven stress distribution. Around the slot, stress is concentrated at the slot edge because the cross-sectional area at this location is smaller and the stress is determined by both the force and the cross-sectional area. The stress concentration can cause plastic deformation or fracture of the steel around the slot hole, thereby affecting the strength and service life of the steel, and in order to avoid the occurrence of the situation, stress holes 17 communicated with the slots 11 are respectively formed at two ends of the slots 11, the stress concentration is reduced through the stress holes 17, and the internal mold 10 is placed to fracture, wherein, because the two slots 11 are adopted in the utility model, and the two slots 11 are communicated, the stress holes 17 are arranged at two ends of the communicated slots 11 formed by combining the two slots 11.

Further, in this embodiment, a shearing area 18 is disposed at the bottom of each slit 11;

specifically, since the outlet 14 of the cutter slit 11 is provided with the clearance chute 15, the inner wall of the outer mold 20 is spaced from the outer wall of the inner mold 10 due to the clearance chute 15, at this time, the shearing force of the outer mold 20 is insufficient during rotation due to the spacing, the situation that smooth shearing cannot be performed easily occurs, in order to avoid the situation, the bottom of each cutter slit 11 is provided with a shearing area 18, the shearing area 18 is an area not covered by the clearance chute 15, the outer wall of the inner mold 10 is tangential to the inner wall of the outer mold 20, when shearing is needed, the inner mold 10 can be lifted, so that the part of the cutter material to be sheared is positioned in the shearing area 18, and at this time, the outer mold 20 forms shearing force with the inner mold 10 during rotation, thereby realizing shearing of the cutter material; the height of the shearing area 18 is equal to or greater than the height of the knife material, so that the knife material can be sheared smoothly, and tearing is avoided.

Further, in this embodiment, a bending opening 21 is formed at the top of the outer mold 20, the upper end and the lower end of the bending opening 21 are equal in width, a cutting opening 22 is formed below the bending opening 21, the upper end width of the cutting opening 22 is greater than the lower end width, and the lower end width of the cutting opening 22 is equal to or greater than the width of the knife slot 11;

specifically, a bending opening 21 for bending and a shearing opening 22 for shearing are formed in the outer die 20, when the cutter material is required to be bent, the cutter material is positioned in the bending opening 21 by lifting the outer die 20, and the cutter material can be bent by rotating the outer die 20 at the moment, wherein the upper end and the lower end of the bending opening 21 are equal in width, so that the bending opening 21 directly acts on the whole cutter material during bending, and force is synchronously applied, so that the bending accuracy and flatness of the cutter material can be ensured; when the outer die 20 is required to be sheared, the cutter is positioned in the shearing opening 22 by lifting the outer die 20, and the outer die 20 is rotated at the moment, so that the shearing of the cutter can be realized, wherein the upper end width of the shearing opening 22 is required to be smaller than the lower end width so that the outer die 20 is sheared from bottom to top when being rotated, and the sliding of the outer die 20 is facilitated due to the structural design of the upper width and the lower small upper width; to ensure that the sliding of the outer die 20 is not affected by the thickness of the knife, the lower end width of the cutout 22 needs to be equal to or greater than the smallest slot 11.

Further, the outer mold 20 is further provided with an avoidance opening 23 corresponding to the bending opening 21 and the shear opening 22, and the width of the avoidance opening 23 is greater than the width of the bending opening 21;

specifically, since the cutter material will pass through the outer die 20, both the front and rear sides of the outer die 20 need to be opened, wherein the bending opening 21 and the cutting opening 22 are located at the front side, since the outer die 20 will rotate, in order to avoid the situation that the opening at the rear side is propped against the cutter material due to insufficient reserved positions when the outer die 20 rotates, the bending is not in place or the cutting is not in place, the rear side of the outer die 20 needs to be provided with the avoiding opening 23, and the width of the avoiding opening 23 needs to be larger than the width of the bending opening 21, so that when the outer die 20 rotates to the maximum angle requiring bending, the rear side of the outer die 20 will not be contacted with the cutter material due to the existence of the avoiding opening 23, and the cutting is the same.

Further, the bottom of the outer mold 20 is flat, so that the outer mold 20 is connected with an external driving device, and is driven to rotate by the external driving device, and the bottom of the outer mold 20 is flat, so that when the bottom of the outer mold 20 is inserted into the driving device, the outer mold 20 can be driven to rotate without other fasteners under the structural design.

In summary, the clearance is arranged in the knife gap, so that the overall flatness of the knife after bending is realized, the die cutting performance of the knife is improved, the die cutting effect is ensured, the inner die is not required to be polished, the service life of the die is prolonged, the manual polishing procedure is omitted, and the use is more convenient; the inner die and the outer die are arranged in a sliding manner, so that the bending or shearing of the cutter material is ensured not to be in conflict.

The present utility model is not limited to the details and embodiments described herein, and thus additional advantages and modifications may readily be made by those skilled in the art, without departing from the spirit and scope of the general concepts defined in the claims and the equivalents thereof, and the utility model is not limited to the specific details, representative apparatus and illustrative examples shown and described herein.

Claims (10)

1. A die bending and shearing die comprising: an inner mold and an outer mold; the outer die is sleeved on the outer side of the inner die, and is characterized in that the inner die is provided with at least one knife slot for feeding a knife material, at least one group of clearance holes are formed in each knife slot, the outer die is movably arranged on the outer side of the inner die, and the inner die can rotate and/or slide relative to the outer die.

2. The die bending and shearing die as set forth in claim 1, wherein said clearance spaces are concave, and each of said clearance spaces is provided with two clearance spaces, respectively located at two sides of said slit and disposed opposite to each other.

3. The die bending and shearing die as recited in claim 2, wherein said clearance space is provided with two sets, one set being located at each end of said slot.

4. The die bending and shearing die as set forth in claim 1, wherein each of said slots includes: the device comprises an inlet and an outlet, wherein the two sides of the outlet are respectively provided with an empty chute, and the two sides of the inlet are respectively provided with a guiding slope.

5. The die bending and shearing die as recited in claim 4, wherein two of said slits are arranged on the same vertical line, the widths of said two slits are unequal, and said two slits are arranged in communication.

6. The die bending and shearing die as recited in claim 1, wherein stress holes are respectively formed at both ends of each of said slits.

7. The die bending and shearing die as recited in claim 1, wherein a shearing area is provided at the bottom of each of said slots.

8. The cutting die bending and shearing die set as set forth in claim 1, wherein a bending opening is formed in the top of the outer die, the upper end and the lower end of the bending opening are equal in width, a shearing opening is formed below the bending opening, the upper end width of the shearing opening is larger than the lower end width, and the lower end width of the shearing opening is equal to or larger than the width of the cutting gap.

9. The die bending and shearing die set as recited in claim 8, wherein said outer die is further provided with a relief opening corresponding to said bending opening and said shearing opening, said relief opening having a width greater than a width of said bending opening.

10. The die bending and shearing die as recited in claim 9 wherein the bottom of said outer die is flat.