CN109249455B - Packaging film material fly cutter cutting mechanism - Google Patents
Packaging film material fly cutter cutting mechanism Download PDFInfo
- Publication number
- CN109249455B CN109249455B CN201811381492.8A CN201811381492A CN109249455B CN 109249455 B CN109249455 B CN 109249455B CN 201811381492 A CN201811381492 A CN 201811381492A CN 109249455 B CN109249455 B CN 109249455B
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- Prior art keywords
- synchronous belt
- fly cutter
- cutting
- groove
- wheel
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- 238000005520 cutting process Methods 0.000 title claims abstract description 92
- 239000000463 material Substances 0.000 title claims abstract description 26
- 230000007246 mechanism Effects 0.000 title claims abstract description 15
- 239000012785 packaging film Substances 0.000 title claims abstract description 10
- 229920006280 packaging film Polymers 0.000 title claims abstract description 10
- 230000001360 synchronised effect Effects 0.000 claims abstract description 97
- 239000003638 chemical reducing agent Substances 0.000 claims description 17
- 230000008878 coupling Effects 0.000 claims description 11
- 238000010168 coupling process Methods 0.000 claims description 11
- 238000005859 coupling reaction Methods 0.000 claims description 11
- 229910000838 Al alloy Inorganic materials 0.000 claims description 5
- 229920006351 engineering plastic Polymers 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 239000011354 acetal resin Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920006324 polyoxymethylene Polymers 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- DHKHKXVYLBGOIT-UHFFFAOYSA-N 1,1-Diethoxyethane Chemical compound CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/56—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which travels with the work otherwise than in the direction of the cut, i.e. flying cutter
- B26D1/58—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which travels with the work otherwise than in the direction of the cut, i.e. flying cutter and is mounted on a movable arm or the like
- B26D1/585—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which travels with the work otherwise than in the direction of the cut, i.e. flying cutter and is mounted on a movable arm or the like for thin material, e.g. for sheets, strips or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/0006—Means for guiding the cutter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/22—Safety devices specially adapted for cutting machines
Abstract
The application discloses a packaging film material fly cutter cutting mechanism which comprises a connecting cross arm and fly cutter rotating wheels rotatably connected to two ends of the connecting cross arm, wherein a synchronous belt is connected between the two fly cutter rotating wheels in a matched mode, a cutting fly cutter is fixed on the synchronous belt, and the cutting edge of the cutting fly cutter faces the outer side of the synchronous belt; at least one of the two fly cutter rotating wheels is in driving connection with the power equipment. By using the fly cutter cutting mechanism, continuous operation of the cutting fly cutter can be realized, no stop is needed in the cutting process, and the cutting efficiency is greatly improved.
Description
Technical Field
The application relates to a packaging film material fly cutter cutting mechanism.
Background
The film material cutting mechanism is needed to be used in the line production of the existing packaging bag production line, the formed bag body or other station film materials are cut, the existing fly cutter cutting mechanism is in an intermittent reciprocating cutting mode, and the cutting speed is low and the efficiency is low. The prior art is urgently required to provide a high-speed and efficient fly cutter cutting mechanism for packaging film materials.
Disclosure of Invention
The application aims to overcome the defects in the prior art and provides a high-speed and high-efficiency packaging film material fly cutter cutting mechanism.
In order to achieve the above purpose, the technical scheme of the application is to provide a packaging film material fly cutter cutting mechanism, which comprises a connecting cross arm and fly cutter rotating wheels rotatably connected to two ends of the connecting cross arm, wherein a synchronous belt is cooperatively connected between the two fly cutter rotating wheels, a cutting fly cutter is fixed on the synchronous belt, and the cutting edge of the cutting fly cutter faces to the outer side of the synchronous belt; at least one of the two fly cutter rotating wheels is in driving connection with the power equipment.
By using the fly cutter cutting mechanism, continuous operation of the cutting fly cutter can be realized, no pause is caused in the cutting process, and the cutting efficiency is greatly improved.
Preferably, an anti-shake supporting wheel is arranged in the middle of the connecting cross arm and is in fit contact with the inner surface of the synchronous belt; the outer edge of the anti-shake supporting wheel is provided with a wheel groove, and the wheel groove comprises a wheel groove bottom ring surface and wheel groove side ring surfaces positioned on two sides of the wheel groove bottom ring surface; the annular surface of the groove bottom of the wheel groove is in fit contact with the inner surface of the synchronous belt, and the annular surface of the side of the wheel groove is in fit limit with the two side edges of the synchronous belt; the anti-shake supporting wheel is fixed on the upper end face of the connecting cross arm through an anti-shake supporting wheel bracket, and the anti-shake supporting wheel is rotationally connected with the upper part of the anti-shake supporting wheel bracket.
By means of the design, the synchronous belt is well limited at the middle part of the connecting cross arm, vertical and horizontal shaking of the synchronous belt is prevented, and stability is greatly improved. Because the position of cutting is in the below of hold-in range, so need not to carry out the direction spacing of high accuracy in hold-in range upper portion, only need reduce the shake can.
Preferably, a synchronous belt guide strip is arranged at the lower part of the connecting transverse arm, a synchronous belt guide groove is formed in the synchronous belt guide strip, an opening of the synchronous belt guide groove faces downwards, and a fly cutter notch for accommodating a cutting fly cutter to pass through is formed at the opening position; the synchronous belt is transmitted in the synchronous belt guide groove and is matched with the inner wall of the synchronous belt guide groove to limit.
When cutting, the membrane material is generally in the below of hold-in range, can meet the resistance of membrane material area when cutting, cuts the fly cutter and can take place the shake under the resistance effect, in order to limit to cut the fly cutter off tracking, limit the hold-in range in hold-in range guide way prevent when cutting to deviate from the cutting route, improved the precision of cutting greatly.
Preferably, the synchronous belt guide strip is in a strip shape, the synchronous belt guide groove is formed in a strip shape along the synchronous belt guide strip, and the fly cutter notch is correspondingly in a strip shape; the two ports of the fly cutter notch are provided with involute inlets, the outer end opening of each involute inlet is wider, and the inner end opening is narrower and is communicated with the fly cutter notch in a linking way; the involute inlet forms a tapered or arcuate pilot inlet with an opening that narrows from an outer end to an inner end.
By means of the design, when the fly cutter is initially contacted with the film material, the fly cutter is easy to slip and deviate, so that involute inlets are formed in two ports of the fly cutter notch, the cutting fly cutter is guided, the interference between the cutting fly cutter, the connecting block and the fly cutter notch is avoided, and the operation safety is improved.
Preferably, the cutting fly cutter is fixed with the synchronous belt through a connecting block, and an included angle between the cutting fly cutter blade and the synchronous belt is 25-35 degrees. With such an angular design, the cutting resistance is minimal.
Preferably, at least one of the two fly cutter rotating wheels is arranged on a tensioning adjusting frame, the tensioning adjusting frame comprises a base and a sliding block which is connected to the base in a sliding manner, a sliding groove is formed in the sliding block, and a bolt which is matched and locked with the sliding groove is arranged on the base; the bottom of the sliding block is provided with an adjusting lug, the base is provided with an adjusting groove for accommodating the sliding of the adjusting lug, and the base is provided with an adjusting bolt for driving the sliding of the adjusting lug; the fly cutter rotating wheel is rotationally connected with the sliding block through a rotating shaft, and the sliding direction of the sliding block and the sliding groove direction are parallel to the connecting cross arm. By means of the design, the tensioning degree of the synchronous belt can be adjusted through the tensioning adjusting frame.
Preferably, at least one of the two fly cutter rotating wheels is connected with a speed reducer, and the speed reducer is connected with the fly cutter rotating wheels through a spring coupling. By means of the design, torque can be transmitted from the speed reducer to the synchronous belt through the spring coupling, and the speed reducer is in a fixed position, and the connecting cross arm can move up and down under the driving of the air cylinder when in use, so that a film material is cut, and an elastic component is needed for torque transmission, so that the spring coupling is selected. The spring selecting coupler comprises a rigid shaft in the middle and two end spring couplers connected to two ends of the rigid shaft, and the two end spring couplers are respectively connected with the output end of the speed reducer and the fly cutter rotating wheel; the structure ensures that a larger dislocation space is obtained between the speed reducer and the fly cutter rotating wheel, and the torque transmission can be maintained during the up-and-down movement of the synchronous belt.
Preferably, the cutting fly cutter and/or the connecting block are/is made of aluminum alloy. By the design, the weight of the cutting fly cutter and/or the connecting block is reduced, and the connecting cross arm can be made of aluminum alloy materials, so that the energy consumption is reduced.
Preferably, the synchronous belt guide strip is made of engineering plastic. Preferably, the acetal resin and polytetrafluoroethylene have low friction coefficients, and the long-term friction loss is reduced.
Preferably, the cutting fly cutting tangential speed is 5m/s or more. The speed can realize rapid cutting, and the production efficiency is greatly improved.
The application has the advantages and beneficial effects that: by using the fly cutter cutting mechanism, continuous operation of the cutting fly cutter can be realized, no pause is caused in the cutting process, and the cutting efficiency is greatly improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present application;
FIG. 2 is an enlarged schematic view of the structure A in FIG. 1;
FIG. 3 is an enlarged schematic view of the structure at B in FIG. 2;
FIG. 4 is a schematic view of the structure of the present application (another view);
FIG. 5 is a schematic view of a timing belt guide bar structure;
FIG. 6 is an enlarged schematic view of the structure at C in FIG. 5;
FIG. 7 is an enlarged schematic view of the structure shown at D in FIG. 5;
FIG. 8 is a schematic side view of a timing belt guide;
FIG. 9 is a schematic diagram of a timing belt guide bar and timing belt mating structure;
FIG. 10 is a schematic view of an anti-shake support wheel.
In the figure: 1. connecting a cross arm; 2. a fly cutter rotating wheel; 3. a synchronous belt; 4. cutting the fly cutter; 5. an anti-shake support wheel; 6. the annular surface of the bottom of the wheel groove; 7. wheel groove side ring surface; 8. a synchronous belt guide bar; 9. a synchronous belt guide groove; 10. a fly cutter notch; 11. an outer end portion; 12. an inner end portion; 13. a tapered guide inlet; 14. a connecting block; 15. a base; 16. a sliding block; 17. a chute; 18. a bolt; 19. a speed reducer; 20. a rigid shaft; 21. an end spring coupling; 22. an adjustment tab; 23. an adjusting groove; 24. an adjusting bolt; 25. anti-shake supporting wheel support.
Detailed Description
The following describes the embodiments of the present application further with reference to the drawings and examples. The following examples are only for more clearly illustrating the technical aspects of the present application, and are not intended to limit the scope of the present application.
As shown in fig. 1 to 10, a packaging film material fly cutter cutting mechanism comprises a connecting cross arm 1 and fly cutter rotating wheels 2 rotatably connected to two ends of the connecting cross arm 1, wherein a synchronous belt 3 is cooperatively connected between the two fly cutter rotating wheels 2, a cutting fly cutter 4 is fixed on the synchronous belt 3, and the cutting edge of the cutting fly cutter 4 faces the outer side of the synchronous belt 3; at least one of the two fly cutter rotating wheels 2 is in driving connection with power equipment.
An anti-shake supporting wheel 5 is arranged in the middle of the connecting cross arm 1, and the anti-shake supporting wheel 5 is in matched contact with the inner surface of the synchronous belt 3; the outer edge of the anti-shake support wheel 5 is provided with a wheel groove, and the wheel groove comprises a wheel groove bottom annular surface 6 and wheel groove side annular surfaces 7 positioned at two sides of the wheel groove bottom annular surface 6; the annular surface 6 of the groove bottom of the wheel groove is in fit contact with the inner surface of the synchronous belt 3, and the annular surface 7 of the side of the wheel groove is in fit limit with the two side edges of the synchronous belt 3; the anti-shake supporting wheel 5 is fixed on the upper end face of the connecting cross arm 1 through an anti-shake supporting wheel bracket 25, and the anti-shake supporting wheel 5 is rotatably connected with the upper part of the anti-shake supporting wheel bracket 25.
The lower part of the connecting cross arm 1 is provided with a synchronous belt guide strip 8, a synchronous belt guide groove 9 is formed in the synchronous belt guide strip 8, the synchronous belt guide groove 9 is downward opened, and a fly cutter notch 10 for accommodating the cutting fly cutter 4 to pass through is formed at the opening position; the synchronous belt 3 is transmitted in the synchronous belt guide groove 9 and is matched with the inner wall of the synchronous belt guide groove 9 to limit.
The synchronous belt guide strip 8 is in a strip shape, the synchronous belt guide groove 9 is formed in a strip shape along the synchronous belt guide strip 8, and the fly cutter notch 10 is correspondingly in a strip shape; the two ports of the fly cutter notch 10 are provided with involute inlets, the outer end 11 of each involute inlet is wider in opening, and the inner end 12 of each involute inlet is narrower in opening and is communicated with the fly cutter notch 10 in a linking way; the involute-type inlet forms a tapered guide inlet 13 or an arc-shaped guide inlet with an opening that narrows gradually from the outer end 11 to the inner end 12.
The cutting fly cutter 4 is fixed with the synchronous belt 3 through the connecting block 14, and an included angle between the cutting edge of the cutting fly cutter 4 and the synchronous belt 3 is 25-35 degrees.
At least one of the two fly cutter rotating wheels 2 is arranged on a tensioning adjusting frame, the tensioning adjusting frame comprises a base 15 and a sliding block 16 which is connected to the base 15 in a sliding manner, a sliding groove 17 is formed in the sliding block 16, and a bolt 18 which is matched and locked with the sliding groove 17 is arranged on the base 15; the fly cutter rotating wheel 2 is rotationally connected with the sliding block 16 through a rotating shaft, and the sliding direction of the sliding block 16 and the direction of the sliding groove 17 are parallel to the connecting cross arm 1. The bottom of the sliding block 16 is provided with an adjusting lug 22, the base is provided with an adjusting groove 23 for accommodating the sliding of the adjusting lug 22, and the base is provided with an adjusting bolt 24 for driving the sliding of the adjusting lug 22.
At least one of the two fly cutter rotating wheels 2 is connected with a speed reducer 19, and the speed reducer 19 is connected with the fly cutter rotating wheels 2 through a spring coupling.
The cutting fly cutter 4 and/or the connecting block 14 are made of aluminum alloy.
The synchronous belt guide strip 8 is made of engineering plastic materials.
The cutting line speed of the cutting fly cutter 4 is 5m/s or more.
Example 1
The utility model provides a packaging film material fly cutter cutting mechanism, includes connecting xarm 1 and rotates fly cutter runner 2 of connecting xarm 1 both ends, the cooperation is connected with hold-in range 3 between two fly cutter runners 2, be fixed with on the hold-in range 3 and cut fly cutter 4, the cutting edge of cutting fly cutter 4 is towards hold-in range 3 outside; at least one of the two fly cutter rotating wheels 2 is in driving connection with power equipment.
An anti-shake supporting wheel 5 is arranged in the middle of the connecting cross arm 1, and the anti-shake supporting wheel 5 is in matched contact with the inner surface of the synchronous belt 3; the outer edge of the anti-shake support wheel 5 is provided with a wheel groove, and the wheel groove comprises a wheel groove bottom annular surface 6 and wheel groove side annular surfaces 7 positioned at two sides of the wheel groove bottom annular surface 6; the annular surface 6 of the groove bottom of the wheel groove is in fit contact with the inner surface of the synchronous belt 3, and the annular surface 7 of the side of the wheel groove is in fit limit with the two side edges of the synchronous belt 3; the anti-shake supporting wheel 5 is fixed on the upper end face of the connecting cross arm 1 through an anti-shake supporting wheel bracket 25, and the anti-shake supporting wheel 5 is rotatably connected with the upper part of the anti-shake supporting wheel bracket 25.
The lower part of the connecting cross arm 1 is provided with a synchronous belt guide strip 8, a synchronous belt guide groove 9 is formed in the synchronous belt guide strip 8, the synchronous belt guide groove 9 is downward opened, and a fly cutter notch 10 for accommodating the cutting fly cutter 4 to pass through is formed at the opening position; the synchronous belt 3 is transmitted in the synchronous belt guide groove 9 and is matched with the inner wall of the synchronous belt guide groove 9 to limit.
The synchronous belt guide strip 8 is in a strip shape, the synchronous belt guide groove 9 is formed in a strip shape along the synchronous belt guide strip 8, and the fly cutter notch 10 is correspondingly in a strip shape; the two ports of the fly cutter notch 10 are provided with involute inlets, the outer end 11 of each involute inlet is wider in opening, and the inner end 12 of each involute inlet is narrower in opening and is communicated with the fly cutter notch 10 in a linking way; the involute-type inlet forms a tapered guide inlet 13 or an arc-shaped guide inlet with an opening that narrows gradually from the outer end 11 to the inner end 12.
When the film cutting device is used, the fly cutter rotating wheel 2 is driven by power equipment to rotate rapidly, the fly cutter rotating wheel 2 drives the synchronous belt 3 to rotate, the cutting fly cutter 4 runs at a high speed along with the synchronous belt 3, when the film material is cut, the film material is arranged below the synchronous belt 3, the connecting cross arm 1 runs up and down in a reciprocating manner, and when the film material is run to a low position, the cutting fly cutter 4 cuts the film material; in order to improve the stability during cutting, a synchronous belt guide strip 8 is arranged; when cutting, can meet the resistance of membrane material area, cut fly cutter 4 and can take place the shake under the resistance effect, in order to limit cut fly cutter 4 off normal and shake, with hold-in range 3 spacing in hold-in range guide slot 9 prevent to deviate from cutting the route when cutting, improved the precision of cutting greatly.
The design of the involute inlet is easy to slip and deviate when the fly cutter is initially contacted with the film material, so that the involute inlet is arranged at two ports of the fly cutter notch 10 to guide the cutting fly cutter 4, thereby avoiding interference between the cutting fly cutter 4 and the connecting block 14 and the fly cutter notch 10 and improving the operation safety;
the anti-shake supporting wheel 5 carries out fine spacing on the hold-in range 3 in the upper portion of hold-in range 3, prevents the shake of hold-in range 3 upper and lower direction and horizontal, great improvement stability. Since the cutting position is below the synchronous belt 3, high-precision guiding and limiting are not needed on the upper part of the synchronous belt 3, and only jitter is needed to be reduced.
Example 2
Further optimizing the embodiment 1, the cutting fly cutter 4 is fixed with the synchronous belt 3 through the connecting block 14, and the included angle between the cutting edge of the cutting fly cutter 4 and the synchronous belt 3 is 25-35 degrees.
At least one of the two fly cutter rotating wheels 2 is arranged on a tensioning adjusting frame, the tensioning adjusting frame comprises a base 15 and a sliding block 16 which is connected to the base 15 in a sliding manner, a sliding groove 17 is formed in the sliding block 16, and a bolt 18 which is matched and locked with the sliding groove 17 is arranged on the base 15; the fly cutter rotating wheel 2 is rotationally connected with the sliding block 16 through a rotating shaft, and the sliding direction of the sliding block 16 and the direction of the sliding groove 17 are parallel to the connecting cross arm 1; the bottom of the sliding block is provided with an adjusting lug 22, the base is provided with an adjusting groove 23 for accommodating the sliding of the adjusting lug 22, and the base is provided with an adjusting bolt 24 for driving the sliding of the adjusting lug 22. When the synchronous belt 3 is used, the synchronous belt 3 can be loosened, in order to adjust the tension, the adjusting lug 22 can be driven to slide in the adjusting groove 23 through the adjusting bolt 24 (the fly cutter rotating wheel 2 is far away from or close to), the two driving sliding blocks 16 slide on the base 15, and after the adjusting to the proper tension, the sliding blocks 16 are locked with the base 15 through the bolts 18. The base 15 is fixed to the connecting bridge 1.
At least one of the two fly cutter rotating wheels 2 is connected with a speed reducer 19, and the speed reducer 19 is connected with the fly cutter rotating wheels 2 through a spring coupling. In such a design, torque can be transmitted from the speed reducer 19 to the synchronous belt 3 through the spring coupling, and the speed reducer 19 is in a fixed position, so that the connecting cross arm 1 can move up and down under the driving of the air cylinder when in use, and the film material is cut, and an elastic component is required for torque transmission, so that the spring coupling is selected. The spring selecting coupler comprises a rigid shaft 20 in the middle and two end spring couplers 21 connected to two ends of the rigid shaft 20, wherein the two end spring couplers 21 are respectively connected with the output end of the speed reducer 19 and the fly cutter rotating wheel 2; the structure can obtain a large dislocation space between the speed reducer 19 and the fly cutter rotating wheel 2, and can also maintain torque transmission during the up-and-down movement of the synchronous belt 3.
The cutting fly cutter 4 and/or the connecting block 14 and/or the connecting cross arm 1 are made of aluminum alloy.
The synchronous belt guide strip 8 is made of engineering plastic materials. Acetal resins and polytetrafluoroethylene are preferred.
The cutting line speed of the cutting fly cutter 4 is 5m/s or more.
The foregoing is merely a preferred embodiment of the present application, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present application, and these modifications and variations should also be regarded as the scope of the application.
Claims (1)
1. A packaging film material fly cutter cutting mechanism which is characterized in that: the device comprises a connecting cross arm and fly cutter rotating wheels rotatably connected to two ends of the connecting cross arm, wherein a synchronous belt is cooperatively connected between the two fly cutter rotating wheels, a cutting fly cutter is fixed on the synchronous belt, and the cutting edge of the cutting fly cutter faces the outer side of the synchronous belt; at least one of the two fly cutter rotating wheels is in driving connection with the power equipment;
an anti-shake supporting wheel is arranged in the middle of the connecting cross arm and is in fit contact with the inner surface of the synchronous belt; the outer edge of the anti-shake supporting wheel is provided with a wheel groove, and the wheel groove comprises a wheel groove bottom ring surface and wheel groove side ring surfaces positioned on two sides of the wheel groove bottom ring surface; the annular surface of the groove bottom of the wheel groove is in fit contact with the inner surface of the synchronous belt, and the annular surface of the side of the wheel groove is in fit limit with the two side edges of the synchronous belt; the anti-shake supporting wheel is fixed on the upper end surface of the connecting cross arm through an anti-shake supporting wheel bracket, and the anti-shake supporting wheel is rotationally connected with the upper part of the anti-shake supporting wheel bracket;
the lower part of the connecting transverse arm is provided with a synchronous belt guide strip, a synchronous belt guide groove is formed in the synchronous belt guide strip, the opening of the synchronous belt guide groove faces downwards, and a fly cutter notch for accommodating a cutting fly cutter to pass through is formed at the opening position; the synchronous belt is transmitted in the synchronous belt guide groove and is matched with the inner wall of the synchronous belt guide groove for limiting;
the synchronous belt guide strip is in a strip shape, the synchronous belt guide groove is formed along the synchronous belt guide strip and is also in a strip shape, and the fly cutter notch is correspondingly in a strip shape; the two ports of the fly cutter notch are provided with involute inlets, the outer end opening of each involute inlet is wider, and the inner end opening is narrower and is communicated with the fly cutter notch in a linking way; the involute inlet forms a conical or arc-shaped guiding inlet with an opening gradually narrowing from the outer end part to the inner end part; limiting the synchronous belt in the synchronous belt guide groove to prevent the synchronous belt from deviating from a cutting path during cutting;
the cutting fly cutter is fixed with the synchronous belt through a connecting block, and the included angle between the cutting edge of the cutting fly cutter and the synchronous belt is 25-35 degrees;
at least one of the two fly cutter rotating wheels is arranged on a tensioning adjusting frame, the tensioning adjusting frame comprises a base and a sliding block which is connected to the base in a sliding manner, a sliding groove is formed in the sliding block, and a bolt which is matched and locked with the sliding groove is arranged on the base; the bottom of the sliding block is provided with an adjusting lug, the base is provided with an adjusting groove for accommodating the sliding of the adjusting lug, and the base is provided with an adjusting bolt for driving the sliding of the adjusting lug; the fly cutter rotating wheel is rotationally connected with the sliding block through a rotating shaft, and the sliding direction of the sliding block and the sliding groove direction are parallel to the connecting cross arm;
at least one of the two fly cutter rotating wheels is connected with a speed reducer, and the speed reducer is connected with the fly cutter rotating wheels through a spring coupling; the spring coupling comprises a rigid shaft in the middle and two end spring couplings connected to two ends of the rigid shaft;
the cutting fly cutter and/or the connecting block are made of aluminum alloy materials;
the synchronous belt guide strip is made of engineering plastic materials;
the cutting tangential speed of the cutting fly knife is 5m/s or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811381492.8A CN109249455B (en) | 2018-11-20 | 2018-11-20 | Packaging film material fly cutter cutting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811381492.8A CN109249455B (en) | 2018-11-20 | 2018-11-20 | Packaging film material fly cutter cutting mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109249455A CN109249455A (en) | 2019-01-22 |
| CN109249455B true CN109249455B (en) | 2023-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811381492.8A Active CN109249455B (en) | 2018-11-20 | 2018-11-20 | Packaging film material fly cutter cutting mechanism |
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| CN (1) | CN109249455B (en) |
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| CN109249455A (en) | 2019-01-22 |
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