CN104044951A - Bag manufacturing cutting machine - Google Patents
Bag manufacturing cutting machine Download PDFInfo
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- CN104044951A CN104044951A CN201410184527.4A CN201410184527A CN104044951A CN 104044951 A CN104044951 A CN 104044951A CN 201410184527 A CN201410184527 A CN 201410184527A CN 104044951 A CN104044951 A CN 104044951A
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Abstract
The invention discloses a bag manufacturing cutting machine. The bag manufacturing cutting machine comprises a lower knife base and a lower knife body arranged at the upper end of the lower knife base, wherein an upper knife base is arranged on the upper part of the lower knife base; an upper knife body matched with the lower knife body is arranged at the lower end of the upper knife base; the upper knife base and/or the lower knife base are/is connected with driving equipment; both the upper knife base and the lower knife base are arranged on a cutting pedestal; the lower end of the cutting pedestal is matched with a slide rail arranged along the front and back direction of an assembly line to slide; front and back driving equipment used for driving the cutting pedestal to slide along the front and back direction of the slide rail is connected with the cutting pedestal. Fully-automatic front and back micro adjustment on the upper knife body and the lower knife body can be performed by the bag manufacturing cutting machine, so that secondary cutting is performed, the risk that chamfering edges and raw edges are formed on a bag body is eliminated, and the functional requirement on a bag manufacturing machine cutting knife cutting part is met.
Description
Technical field
The present invention relates to a kind of bag cutting machine.
Background technology
As everyone knows, four jiaos of existing bags are standing chamfering, both attractive in appearance by avoiding the 90 traditional scuffings of degree corner to other objects, so need two bags to come along line of centers cutting in bag bag process.Existing Bag Making Machine comprises lower tool rest and is arranged on the lower knife body of lower tool rest upper end; Lower tool rest top is provided with upper cutter head, and upper cutter head lower end is provided with the upper knife body coordinating with lower knife body, and upper cutter head and/or lower tool rest are connected with upper and lower driving arrangement, and upper lower knife body coordinates cutting.But because Equipment Inspection components and parts and part exist error, cutting part usually has less deviation with line of centers, thereby causes bag usually to have chamfering burr.For this reason, if the risk of chamfering burr is carried out secondary cutting even repeatedly and just can be eliminated in the fine setting that cutting equipment can carry out fore-and-aft direction on conveyor line to bag.Prior art urgent need one can be finely tuned front and back, carries out the bag cutting machine of secondary cut.
Summary of the invention
The object of the invention is to overcome the defect existing in prior art, provide one to finely tune front and back, carry out the bag cutting machine of secondary cut.
For achieving the above object, technical scheme of the present invention has been to provide a kind of bag cutting machine, comprises lower tool rest and the lower knife body that is arranged on lower tool rest upper end; Described lower tool rest top is provided with upper cutter head, described upper cutter head lower end is provided with the upper knife body coordinating with lower knife body, described upper cutter head and/or lower tool rest are connected with upper and lower driving arrangement, described upper cutter head and lower tool rest are all arranged on cutting base, described cutting base lower end coordinates slip with the slide rail arranging along conveyor line fore-and-aft direction, is connected with cutting base for the front and back driving arrangement that drives cutting base to slide along slide rail front and back.Bag cutting machine described in the application of the invention can carry out finely tuning before and after full-automation to upper lower knife body, thereby carries out secondary cut, eliminates the risk that chamfering burr appear in bag, can meet again the functional requirement of existing Bag Making Machine cutting knife cut-out parts simultaneously.
As preferably, described front and back driving arrangement comprises that leading screw, leading screw support, belt wheel, transport tape and front and back drive servomotor; Described leading screw is connected along fore-and-aft direction setting and with leading screw support, described leading screw one end with by regulating screw thread to be connected the other end with cutting base and to be fixed with belt wheel, described belt wheel is connected by transport tape and front and back driving servomotor.Such design can regulate the front and back position of cutting base easily by leading screw.
As preferably, on described leading screw support, be fixed with leading screw bearing, described leading screw is connected with leading screw support by leading screw bearing, and described leading screw support is arranged on cutting base front or rear.Such design can limit leading screw and move at front and back position, reduces the friction force of leading screw axial rotation simultaneously.
As preferably, on described cutting base, be also provided with lower tool rest front and back regulating mechanism, before and after described lower tool rest, regulating mechanism comprises rotation adjust bar, rotation bar supporter, the adjusting screw(rod) arranging along fore-and-aft direction and the adjusting screw(rod) adapter plate along left and right directions setting; Described rotation bar supporter is to extend back along both sides, cutting base rear end and two L shaped engaging lugs that end raises up, and described rotation adjust bar is along fore-and-aft direction setting and be rotationally connected with L shaped engaging lug lug boss; Described adjusting screw(rod) adapter plate and two L shaped engaging lug lug bosses are fixed, and described adjusting screw(rod) one end is by regulating screw thread to be connected with lower tool rest, and the other end and adjusting screw(rod) adapter plate are rotationally connected; Described rotation adjust bar and adjusting screw(rod) are in transmission connection.Such design can regulate the laminating degree of lower knife body the right and left and upper lower knife body cutting knife mouth corresponding with the position of sack cutting edge, suitable elasticity can reduce the generation of chamfering burr.
As preferably, on described rotation adjust bar, be fixed with adjusting cone gear, described adjusting screw(rod) is provided with the screw rod finishing bevel gear cuter coordinating with adjusting cone gear; Described adjusting screw(rod) in the past postpone is fixed with screw rod finishing bevel gear cuter through after adjusting screw(rod) adapter plate; Described adjusting cone gear is provided with two and be arranged on the inner two ends of two L shaped engaging lugs.It is stressed evenly that such design is moved at fore-and-aft direction lower tool rest, and operation is synchronous, the degree of stability of raising equipment operation.
As preferably, the blade of described lower knife body and upper knife body has at least one to be oblique blade.Cutter hub incision is convenient in such design, reduces the generation of chamfering burr.
As preferably, described lower tool rest two ends are provided with the pilot bar for guiding upper cutter head to move up and down, and described upper cutter head two ends are slidably socketed by slide block and pilot bar; Described upper and lower driving arrangement comprises pull bar, swing plate, contiguous block, connecting rod, large belt wheel, wabble wheel, balance staff and drive up and down servomotor; Described slide rail lower end is provided with balance staff, and described balance staff two ends are fixed with swing plate, and described swing plate is in transmission connection by pull bar and slide block respectively; At least one side of described balance staff is fixed with contiguous block, and described contiguous block is in transmission connection by connecting rod and wabble wheel; Described wabble wheel is coaxially fixing with large belt wheel, and described large belt wheel is connected with driving up and down servomotor by driving band.The operation up and down of upper cutter head that such design has facilitated stable realization.Between described upper cutter head and upper and lower driving arrangement, adopt to be flexible coupling and improved the durability of safety and upper lower knife body.
As preferably, described swing plate is provided with the hinge hole for cylinder lever connecting rod, and described hinge hole projection is arranged on swing plate.Such design is the further optimization to scheme.
As preferably, on described balance staff, be also provided with and help pendulum device, described in help pendulum device to comprise to help pendulum cylinder and with helping pendulum ejecting rod of cylinder hinged cylinder arm-tie, described cylinder arm-tie is fixedly connected with balance staff; The described pendulum cylinder that helps is arranged on the front downside of balance staff or rear downside.Such design can be used for the motion of the programming control upper cutter head that coordinates Bag Making Machine, can alleviate the operating pressure of upper and lower driving arrangement simultaneously, contributes to improve the alerting ability of stabilization of equipment performance and bag bag type specification.
As preferably, described wabble wheel is provided with fan-shaped check-out console.Such design is convenient to drive up and down the running detection of servomotor and speed detects and the upper stop position of control upper cutter head.
Advantage of the present invention and beneficial effect are: the bag cutting machine described in the application of the invention can carry out finely tuning before and after full-automation to upper lower knife body, thereby carry out secondary cut, eliminate the risk that chamfering burr appear in bag, can meet again the functional requirement of existing Bag Making Machine cutting knife cut-out parts simultaneously.
Brief description of the drawings
Fig. 1 is left rear side of the present invention visual angle structural representation;
Fig. 2 is right lateral side of the present invention visual angle structural representation;
Fig. 3 is front left side of the present invention visual angle structural representation;
Fig. 4 is part-structure enlarged diagram of the present invention;
Fig. 5 is traditional bag cutting technique figure;
Fig. 6 is bag cutting technique figure of the present invention.
In figure: 1, lower tool rest; 2, lower knife body; 3, upper cutter head; 4, upper knife body; 5, cutting base; 6, slide rail; 7, leading screw; 8, leading screw support; 9, belt wheel; 10, transport tape; 11, front and back drive servomotor; 12, rotation adjust bar; 13, rotation bar supporter; 14, adjusting screw(rod); 15, adjusting screw(rod) adapter plate; 16, lug boss; 17, adjusting cone gear; 18, screw rod finishing bevel gear cuter; 19, pilot bar; 20, slide block; 21, pull bar; 22, swing plate; 23, contiguous block; 24, connecting rod; 25, large belt wheel; 26, wabble wheel; 27, balance staff; 28, drive up and down servomotor; 29, driving band; 31, help pendulum cylinder; 32, cylinder arm-tie; 33, fan-shaped check-out console; 34, bag; 35, line of centers; 36, chamfering; 37, line of cut; 38, chamfering burr.
Detailed description of the invention
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is further described.Following examples are only for technical scheme of the present invention is more clearly described, and can not limit the scope of the invention with this.
As shown in Figure 5, between two connected bags, there is a line of centers 35, just can obtain two bags 34 that are provided with chamfering 36 according to line of centers 35 cuttings, but there is error owing to detecting components and parts and part, actual line of cut 37 will have deviation with line of centers 35, and result will cause chamfering burr 38.As shown in Figure 6, if having respectively a line of cut 37 just can eliminate chamfering burr 38 in line of centers 35 front and back, obtain two bags 35 that are provided with chamfering 36, proposed design of the present invention based on this principle.
As Figure 1-Figure 4, a kind of bag cutting machine, comprises lower tool rest 1 and the lower knife body 2 that is arranged on lower tool rest 1 upper end; Described lower tool rest 1 top is provided with upper cutter head 3, described upper cutter head 3 lower ends are provided with the upper knife body 4 coordinating with lower knife body 2, described upper cutter head 3 and/or lower tool rest 1 are connected with upper and lower driving arrangement, described upper cutter head 3 and lower tool rest 1 are all arranged on cutting base 5, described cutting base 5 lower ends coordinate slip with the slide rail 6 arranging along conveyor line fore-and-aft direction, are connected with cutting base 5 for the front and back driving arrangement that drives cutting base 5 to slide along slide rail 6 front and back.
Described front and back driving arrangement comprises that leading screw 7, leading screw support 8, belt wheel 9, transport tape 10 and front and back drive servomotor 11; Described leading screw 7 is connected along fore-and-aft direction setting and with leading screw support 8, described leading screw 7 one end with by regulating screw thread to be connected the other end with cutting base 5 and to be fixed with belt wheel 9, described belt wheel 9 is connected by transport tape 10 and front and back driving servomotor 11.
On described leading screw support 8, be fixed with leading screw bearing, described leading screw 7 is connected with leading screw support 8 by leading screw bearing, and described leading screw support 8 is arranged on cutting base 5 fronts or rear.
On described cutting base 5, be also provided with lower tool rest 1 front and back regulating mechanism, described lower tool rest 1 front and back regulating mechanism comprises rotation adjust bar 12, rotation bar supporter 13, the adjusting screw(rod) 14 arranging along fore-and-aft direction and the adjusting screw(rod) adapter plate 15 arranging along left and right directions; Described rotation bar supporter 13 is that described rotation adjust bar 12 is along fore-and-aft direction setting and be rotationally connected with L shaped engaging lug lug boss 16 along two L shaped engaging lugs that cutting base 5 both sides, rear end extend back and end raises up; Described adjusting screw(rod) adapter plate 15 and two L shaped engaging lug lug bosses 16 are fixing, and described adjusting screw(rod) 14 one end are connected the other end by adjusting screw thread with lower tool rest 1 and adjusting screw(rod) adapter plate 15 is rotationally connected; Described rotation adjust bar 12 is in transmission connection with adjusting screw(rod) 14.
On described rotation adjust bar 12, be fixed with adjusting cone gear 17, described adjusting screw(rod) 14 is provided with the screw rod finishing bevel gear cuter 18 coordinating with adjusting cone gear 17; Described adjusting screw(rod) 14 the past postpones pass adjusting screw(rod) adapter plate 15 afterwards and screw rod finishing bevel gear cuter 18 is fixed; Described adjusting cone gear 17 is provided with two and be arranged on the inner two ends of two L shaped engaging lugs.
The blade of described lower knife body 2 and upper knife body 4 has at least one to be oblique blade.
Described lower tool rest 1 two ends are provided with the pilot bar 19 for guiding upper cutter head 3 to move up and down, and described upper cutter head 3 two ends are slidably socketed by slide block 20 and pilot bar 19; Described upper and lower driving arrangement comprises pull bar 21, swing plate 22, contiguous block 23, connecting rod 24, large belt wheel 25, wabble wheel 26, balance staff 27 and drive up and down servomotor 28; Described slide rail 6 lower ends are provided with balance staff 27, and described balance staff 27 two ends are fixed with swing plate 22, and described swing plate 22 is in transmission connection by pull bar 21 and slide block 20 respectively; At least one side of described balance staff 27 is fixed with contiguous block 23, and described contiguous block 23 is in transmission connection by connecting rod 24 and wabble wheel 26; Described wabble wheel 26 is coaxially fixing with large belt wheel 25, and described large belt wheel 25 is connected with driving up and down servomotor 28 by driving band 29.
Described swing plate 22 is provided with the hinge hole 30 for cylinder lever connecting rod 21, and described hinge hole 30 projections are arranged on swing plate 22.
On described balance staff 27, be also provided with and help pendulum device, described in help pendulum device to comprise to help pendulum cylinder 31 and with helping pendulum cylinder 31 push rods hinged cylinder arm-tie 32, described cylinder arm-tie 32 is fixedly connected with balance staff 27; The described pendulum cylinder 31 that helps is arranged on the front downside of balance staff 27 or rear downside.
Described wabble wheel 26 is provided with fan-shaped check-out console 33.
When use, first regulate the elasticity between upper lower knife body by lower tool rest 1 front and back regulating mechanism, rotate rotation adjust bar 12, rotation adjust bar 12 drives adjusting screw(rod) 14 to rotate by the transmission of adjusting cone gear 17 and screw rod finishing bevel gear cuter 18, adjusting screw(rod) 14 one end are by regulating screw thread to be connected with lower tool rest 1, thereby laminating degree and the upper lower knife body cutting knife mouth of the upper lower knife body the right and left of adjusting are corresponding with the position of sack cutting edge.
Then, open whole streamline equipment, bag enters cutting equipment.Drive upper and lower driving arrangement, drive up and down servomotor 28 to drive large belt wheel 25 to rotate, while wabble wheel 26 rotates drivening rod 24 and moves, and connecting rod 24 drives contiguous block 23, and contiguous block 23 is fixed with balance staff 27 and swing plate 22 positions, thereby swing plate 22 moves, oscillating deck hinge hole 30 rotates and drives pull bar 21 to move, and pull bar 21 drives slide to slide up and down under the directional tagging of pilot bar 19, and slide block 20 is fixing with upper cutter head 3, thereby upper cutter head 3 moves up and down, upper lower knife body 2 coordinates cutting.
Complete the front and back adjusting that enters lower tool rest 1 after once cutting, front and back drive servomotor 11 driving pulleys 9 to rotate, and belt wheel 9 drives leading screw 7 to rotate, and leading screw 7 drives cutting base 5 to move backward (for example 1mm), repeats upper and lower cutting step, and secondary cut completes; Then before and after, drive servomotor 11 driving pulleys 9 to rotate, belt wheel 9 drives leading screw 7 to rotate, and leading screw 7 drives cutting base 5 to move forward (for example 1mm), gets back to initial position, prepares next cycle event.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing from the front lower of the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a bag cutting machine, comprises lower tool rest and the lower knife body that is arranged on lower tool rest upper end; Described lower tool rest top is provided with upper cutter head, described upper cutter head lower end is provided with the upper knife body coordinating with lower knife body, described upper cutter head and/or lower tool rest are connected with upper and lower driving arrangement, it is characterized in that: described upper cutter head and lower tool rest are all arranged on cutting base, described cutting base lower end coordinates slip with the slide rail arranging along conveyor line fore-and-aft direction, is connected with cutting base for the front and back driving arrangement that drives cutting base to slide along slide rail front and back.
2. bag cutting machine as claimed in claim 1, is characterized in that: described front and back driving arrangement comprises that leading screw, leading screw support, belt wheel, transport tape and front and back drive servomotor; Described leading screw is connected along fore-and-aft direction setting and with leading screw support, described leading screw one end with by regulating screw thread to be connected the other end with cutting base and to be fixed with belt wheel, described belt wheel is connected by transport tape and front and back driving servomotor.
3. bag cutting machine as claimed in claim 2, is characterized in that: on described leading screw support, be fixed with leading screw bearing, described leading screw is connected with leading screw support by leading screw bearing, and described leading screw support is arranged on cutting base front or rear.
4. bag cutting machine as claimed in claim 3, it is characterized in that: on described cutting base, be also provided with lower tool rest front and back regulating mechanism, before and after described lower tool rest, regulating mechanism comprises rotation adjust bar, rotation bar supporter, the adjusting screw(rod) arranging along fore-and-aft direction and the adjusting screw(rod) adapter plate along left and right directions setting; Described rotation bar supporter is to extend back along both sides, cutting base rear end and two L shaped engaging lugs that end raises up, and described rotation adjust bar is along fore-and-aft direction setting and be rotationally connected with L shaped engaging lug lug boss; Described adjusting screw(rod) adapter plate and two L shaped engaging lug lug bosses are fixed, and described adjusting screw(rod) one end is connected the other end by adjusting screw thread with lower tool rest and adjusting screw(rod) adapter plate is rotationally connected; Described rotation adjust bar and adjusting screw(rod) are in transmission connection.
5. bag cutting machine as claimed in claim 4, is characterized in that: on described rotation adjust bar, be fixed with adjusting cone gear, described adjusting screw(rod) is provided with the screw rod finishing bevel gear cuter coordinating with adjusting cone gear; Described adjusting screw(rod) in the past postpone is fixed with screw rod finishing bevel gear cuter through after adjusting screw(rod) adapter plate; Described adjusting cone gear is provided with two and be arranged on the inner two ends of two L shaped engaging lugs.
6. bag cutting machine as claimed in claim 5, is characterized in that: the blade of described lower knife body and upper knife body has at least one to be oblique blade.
7. bag cutting machine as claimed in claim 6, is characterized in that: described lower tool rest two ends are provided with the pilot bar for guiding upper cutter head to move up and down, and described upper cutter head two ends are slidably socketed by slide block and pilot bar; Described upper and lower driving arrangement comprises pull bar, swing plate, contiguous block, connecting rod, large belt wheel, wabble wheel, balance staff and drive up and down servomotor; Described slide rail lower end is provided with balance staff, and described balance staff two ends are fixed with swing plate, and described swing plate is in transmission connection by pull bar and slide block respectively; At least one side of described balance staff is fixed with contiguous block, and described contiguous block is in transmission connection by connecting rod and wabble wheel; Described wabble wheel is coaxially fixing with large belt wheel, and described large belt wheel is connected with driving up and down servomotor by driving band.
8. bag cutting machine as claimed in claim 7, is characterized in that: described swing plate is provided with the hinge hole for cylinder lever connecting rod, described hinge hole projection is arranged on swing plate.
9. bag cutting machine as claimed in claim 8, is characterized in that: on described balance staff, be also provided with and help pendulum device, described in help pendulum device to comprise to help pendulum cylinder and with helping pendulum ejecting rod of cylinder hinged cylinder arm-tie, described cylinder arm-tie is fixedly connected with balance staff; The described pendulum cylinder that helps is arranged on the front downside of balance staff or rear downside.
10. bag cutting machine as claimed in claim 9, is characterized in that: described wabble wheel is provided with fan-shaped check-out console.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410184527.4A CN104044951B (en) | 2014-05-04 | 2014-05-04 | A kind of bag cutting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410184527.4A CN104044951B (en) | 2014-05-04 | 2014-05-04 | A kind of bag cutting machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104044951A true CN104044951A (en) | 2014-09-17 |
| CN104044951B CN104044951B (en) | 2016-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410184527.4A Active CN104044951B (en) | 2014-05-04 | 2014-05-04 | A kind of bag cutting machine |
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| Country | Link |
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| CN (1) | CN104044951B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104191648A (en) * | 2014-08-29 | 2014-12-10 | 无锡市张泾宇钢机械厂 | Upper cutter pushing device of bag making machine |
| CN105108797A (en) * | 2015-09-15 | 2015-12-02 | 无锡鼎茂机械制造有限公司 | Dual-cutting cutter device for bag making machine |
| CN106829582A (en) * | 2017-01-12 | 2017-06-13 | 芜湖航天特种电缆厂股份有限公司 | Film cutter sweep |
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| CN1330023A (en) * | 2000-06-15 | 2002-01-09 | 户谷技研工业株式会社 | Bag making machine |
| CN102502316A (en) * | 2011-10-24 | 2012-06-20 | 福建省三明市东辰机械制造有限责任公司 | Cord winding and partitioning machine |
| CN202412801U (en) * | 2011-12-30 | 2012-09-05 | 南京沪江复合材料有限公司 | Middle seal inserted edge bag on-line bevel forming device |
| CN203185702U (en) * | 2013-03-22 | 2013-09-11 | 中山市新宏业自动化工业有限公司 | Bag making machine |
| CN203236508U (en) * | 2013-04-10 | 2013-10-16 | 上海洲泰轻工机械制造有限公司 | Plastic film cutting-off device |
| CN103722580A (en) * | 2013-12-31 | 2014-04-16 | 浙江安浦科技有限公司 | Copper foil continuous cutting servo mechanism |
| CN203922246U (en) * | 2014-05-04 | 2014-11-05 | 无锡鸿昌精密机械有限公司 | A kind of bag cutting machine |
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2014
- 2014-05-04 CN CN201410184527.4A patent/CN104044951B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1330023A (en) * | 2000-06-15 | 2002-01-09 | 户谷技研工业株式会社 | Bag making machine |
| CN102502316A (en) * | 2011-10-24 | 2012-06-20 | 福建省三明市东辰机械制造有限责任公司 | Cord winding and partitioning machine |
| CN202412801U (en) * | 2011-12-30 | 2012-09-05 | 南京沪江复合材料有限公司 | Middle seal inserted edge bag on-line bevel forming device |
| CN203185702U (en) * | 2013-03-22 | 2013-09-11 | 中山市新宏业自动化工业有限公司 | Bag making machine |
| CN203236508U (en) * | 2013-04-10 | 2013-10-16 | 上海洲泰轻工机械制造有限公司 | Plastic film cutting-off device |
| CN103722580A (en) * | 2013-12-31 | 2014-04-16 | 浙江安浦科技有限公司 | Copper foil continuous cutting servo mechanism |
| CN203922246U (en) * | 2014-05-04 | 2014-11-05 | 无锡鸿昌精密机械有限公司 | A kind of bag cutting machine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104191648A (en) * | 2014-08-29 | 2014-12-10 | 无锡市张泾宇钢机械厂 | Upper cutter pushing device of bag making machine |
| CN105108797A (en) * | 2015-09-15 | 2015-12-02 | 无锡鼎茂机械制造有限公司 | Dual-cutting cutter device for bag making machine |
| CN106829582A (en) * | 2017-01-12 | 2017-06-13 | 芜湖航天特种电缆厂股份有限公司 | Film cutter sweep |
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| Publication number | Publication date |
|---|---|
| CN104044951B (en) | 2016-07-13 |
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