CN203725591U - Roll forming device of centrifugal-fan stiffener - Google Patents
Roll forming device of centrifugal-fan stiffener Download PDFInfo
- Publication number
- CN203725591U CN203725591U CN201420114691.3U CN201420114691U CN203725591U CN 203725591 U CN203725591 U CN 203725591U CN 201420114691 U CN201420114691 U CN 201420114691U CN 203725591 U CN203725591 U CN 203725591U
- Authority
- CN
- China
- Prior art keywords
- runner
- time
- recess
- projection
- roll forming
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Landscapes
- Manufacture Of Motors, Generators (AREA)
Abstract
The utility model discloses a roll forming device of a centrifugal-fan stiffener. The roll forming device comprises a frame, and a plurality of connecting shafts are arranged on the frame and are connected through gears; one of the connecting shafts is provided with a driven pulley which is connected with a driving pulley through a synchronous belt; the driving pulley is driven through a motor so as to drive the connecting shafts to rotate; upper rotating wheels or lower rotating wheels are arranged on part of the connecting shafts; the upper rotating wheels and the lower rotating wheels form seven groups of rolling devices arrayed in sequence; a die underframe is arranged on one side of the frame, a lower die plate is arranged on the die underframe, and a punching die and a cutting die are arranged on the lower die plate; the upper side of each of the punching die and the cutting die is provided with a heating head; the heating heads can be driven by an oil cylinder to move up and down. The whole machining process of the stiffener can be completed in automation, and machining efficiency can be greatly improved.
Description
Technical field
The utility model relates to a kind of process equipment of centrifugal blower annex, is specifically related to a kind of Roll forming apparatus of centrifugal blower bracing piece.
Background technology
Bracing piece is as shown in Figure 1 as the indispensable accessory of duplex centrifugal, and its market demand is very huge., for the processing of bracing piece, need to be placed on different processing machines at present, then could finally make bracing piece be shaped after experiencing the processing of each processing machine, the very trouble that seems, and inefficiency.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of Roll forming apparatus of centrifugal blower bracing piece, and it can realize the automation processing of centrifugal blower bracing piece.
For solving the problems of the technologies described above, the technical solution of the Roll forming apparatus of the utility model centrifugal blower bracing piece is:
Comprise frame 13, the top of frame 13 is provided with many connecting axles 4, between many connecting axles 4, by gear, realizes connection, when wherein a connecting axle 4 rotates, can drive other connecting axle 4 synchronously to rotate; Wherein on a connecting axle 4, be provided with driven pulley 6, driven pulley 6 connects driving pulley 14 by Timing Belt 5; Driving pulley 14 is realized and being driven by motor 15, thereby drives 4 rotations of many connecting axles; On part connecting axle 4, be provided with runner or lower runner; Upper runner and lower runner form seven groups of rolling devices that are arranged in order; One side of frame 13 is provided with mould underframe 12, is provided with lower bolster 11 on mould underframe 12, is provided with perforating die 9 and knife edge die 10 on lower bolster 11; The top of perforating die 9 and knife edge die 10 is respectively arranged with attacking head 8; Attacking head 8 can move up and down under the drive of oil cylinder 7.
Described first group of rolling device comprises runner 21 and first time runner 22 on first; The middle part of first time runner 22 forms rectangular preiection, and the axial length of projection is consistent with the width of coiled strip; On first, the middle part of runner 21 forms rectangular recess, and the rectangular recess of runner 21 matches with the rectangular preiection of first time runner 22 on first, and the rectangular preiection of first time runner 22 is wrapped by the rectangular recess of runner 21 on first.
Described second group of rolling device comprises runner 23 and second time runner 24 on second; The middle part of second time runner 24 forms trapezoidal projection, and the top axial length of projection is less than the width of coiled strip; On second, the middle part of runner 23 forms trapezoidal recess, and the trapezoidal recess of runner 23 and the trapezoidal projection of second time runner 24 match on second.
Described the 3rd group of rolling device comprises runner 25 and the 3rd time runner 26 on the 3rd; The middle part of the 3rd time runner 26 forms trapezoidal projection; The protruding top axial length of the 3rd time runner 26 is consistent with the top axial length of second time runner 24; The protruding trapezoidal angle of the 3rd time runner 26 is greater than the protruding trapezoidal angle of second time runner 24; On the 3rd, the middle part of runner 25 forms trapezoidal recess, and the recess of runner 25 matches with the projection of the 3rd time runner 26 on the 3rd.
Described the 4th group of rolling device comprises runner 27 and the 4th time runner 28 on the 4th; The middle part of the 4th time runner 28 forms trapezoidal projection; The protruding top axial length of the 4th time runner 28 is consistent with the top axial length of the 3rd time runner 26; The protruding trapezoidal angle of the 4th time runner 28 is greater than the protruding trapezoidal angle of the 3rd time runner 26; On the 4th, the middle part of runner 27 forms trapezoidal recess, and the recess of runner 27 matches with the projection of the 4th time runner 28 on the 4th.
Described the 5th group of rolling device comprises that the 5th runner 29 and 30, two position-limited wheels 30 of two position-limited wheels are arranged at respectively the both sides, below of the 5th runner 29; The middle part of the 5th runner 29 forms rectangular preiection.
Described the 6th group of rolling device comprises runner and the 6th time runner on the 6th; The middle part of the 6th time runner forms rectangular preiection; On the 6th, the middle part of runner forms rectangular recess, and the recess of runner matches with the projection of the 6th time runner on the 6th; Described the 7th group of rolling device comprises runner and the 7th time runner on the 7th; The middle part of the 7th time runner forms rectangular preiection; On the 7th, the middle part of runner forms rectangular recess, and the recess of runner matches with the projection of the 7th time runner on the 7th.
Described perforating die 9 comprises perforating die base 93, and the top of perforating die base 93 is provided with jumper bar 92, and the bottom of jumper bar 92 is provided with drift 91; Between jumper bar 92 and perforating die base 93, be provided with spring 94; When jumper bar 92 catches a packet 8 pressure, the elastic force that jumper bar 92 overcomes spring 94 moves downward, and drift 91 can carry out punching operation to workpiece; Complete after punching, jumper bar 92 resets under the elastic force effect of spring 94.
Described knife edge die 10 comprises knife edge die base 103, and the top of knife edge die base 103 is provided with cutting knife 101, between cutting knife 101 and knife edge die base 103, is provided with knife edge die spring 102; When cutting knife 101 catches a packet 8 pressure, the elastic force that cutting knife 101 overcomes knife edge die spring 102 moves downward, and cutting knife 101 can cut off operation to workpiece; Complete after cut-out, cutting knife 101 resets under the elastic force effect of knife edge die spring 102.
The technique effect that the utility model can reach is:
The utility model machines for the equal automation of whole process of bracing piece, can greatly improve working (machining) efficiency.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Fig. 1 is the schematic cross-section of centrifugal blower bracing piece;
Fig. 2 is the schematic diagram of the Roll forming apparatus of the utility model centrifugal blower bracing piece;
Fig. 3 is the schematic diagram of first group of rolling device of the present utility model;
Fig. 4 is the schematic diagram of second group of rolling device of the present utility model;
Fig. 5 is the schematic diagram of the 3rd group of rolling device of the present utility model;
Fig. 6 is the schematic diagram of the 4th group of rolling device of the present utility model;
Fig. 7 is the schematic diagram of the 5th group of rolling device of the present utility model;
Fig. 8 is the schematic diagram of the 6th group of rolling device of the present utility model;
Fig. 9 is the schematic diagram of the 7th group of rolling device of the present utility model;
Figure 10 is the schematic diagram of perforating die of the present utility model;
Figure 11 is the schematic diagram of knife edge die of the present utility model.
Description of reference numerals in figure:
1 is epipleural, and 2 is bearing,
3 is lower side panel, and 4 is connecting axle,
5 is Timing Belt, and 6 is driven pulley,
7 is oil cylinder, and 8 is attacking head,
9 is perforating die, and 10 is knife edge die,
11 is lower bolster, and 12 is mould underframe,
13 is frame, and 14 is driving pulley,
15 is servomotor, and 16 is motor cabinet,
21 is runner on first, and 22 is first time runner,
23 is runner on second, and 24 is second time runner,
25 is runner on the 3rd, and 26 is the 3rd time runner,
27 is runner on the 4th, and 28 is the 4th time runner,
29 is the 5th runner, and 30 is position-limited wheel,
91 is drift, and 92 is jumper bar,
93 is perforating die base, and 94 is spring,
101 is cutting knife, and 102 is knife edge die spring,
103 is knife edge die base.
The specific embodiment
As shown in Figure 2, the Roll forming apparatus of the utility model centrifugal blower bracing piece, comprises frame 13, is fixedly installed 3, two lower side panels of two lower side panels, 3 front and back and arranges in frame 13; The top of lower side panel 3 is fixedly connected with epipleural 1; Between two epipleurals 1 and between two lower side panels 3, be respectively arranged with many connecting axles 4, the two ends of connecting axle 4 connect epipleural 1 or lower side panel 3 by bearing 2 respectively;
Between many connecting axles 4, by gear, realize connection, when wherein a connecting axle 4 rotates, can drive other connecting axle 4 synchronously to rotate; Wherein on a connecting axle 4, be provided with driven pulley 6, driven pulley 6 connects driving pulley 14 by Timing Belt 5; Driving pulley 14 is realized and being driven by servomotor 15; Servomotor 15 is fixedly installed on motor cabinet 16;
On the part connecting axle 4 of epipleural 1, be provided with runner, on the part connecting axle 4 of lower side panel 3, be provided with lower runner; Upper runner and lower runner form seven groups of rolling devices;
As shown in Figure 3, first group of rolling device is comprised of runner 21 on first and first time runner 22; The middle part of first time runner 22 forms the projection (being that protruding cross section is rectangle) of extending vertically, and the axial length of projection is consistent with the width of coiled strip; On first, the middle part of runner 21 forms the recess extending vertically, and the recess of runner 21 matches with the projection of first time runner 22 on first, and the projection of first time runner 22 is wrapped by the recess of runner 21 on first; When coiled strip through first group of rolling device first between runner 21 and first time runner 22 time, the shape of coiled strip does not change;
As shown in Figure 4, second group of rolling device is comprised of runner 23 on second and second time runner 24; The projection that the formation two ends, middle part of second time runner 24 are inclined-plane (being that protruding cross section is trapezoidal), the top axial length (being trapezoidal water table opening) of projection is less than the width of coiled strip; The recess that on second, the formation two ends, middle part of runner 23 are inclined-plane (cross section that is recess is trapezoidal), the recess of runner 23 matches with the projection of second time runner 24 on second;
As shown in Figure 5, the 3rd group of rolling device is comprised of runner 25 on the 3rd and the 3rd time runner 26; The middle part of the 3rd time runner 26 forms trapezoidal projection; The protruding top axial length of the 3rd time runner 26 is consistent with the top axial length of second time runner 24; The protruding trapezoidal angle of the 3rd time runner 26 is greater than the protruding trapezoidal angle of second time runner 24; On the 3rd, the middle part of runner 25 forms trapezoidal recess, and the recess of runner 25 matches with the projection of the 3rd time runner 26 on the 3rd;
As shown in Figure 6, the 4th group of rolling device is comprised of runner 27 on the 4th and the 4th time runner 28; The middle part of the 4th time runner 28 forms trapezoidal projection; The protruding top axial length of the 4th time runner 28 is consistent with the top axial length of the 3rd time runner 26; The protruding trapezoidal angle of the 4th time runner 28 is greater than the protruding trapezoidal angle of the 3rd time runner 26; On the 4th, the middle part of runner 27 forms trapezoidal recess, and the recess of runner 27 matches with the projection of the 4th time runner 28 on the 4th;
Can find out, the angle of the trapezoidal projection of lower runner of second group of rolling device, the 3rd group of rolling device, the 4th group of rolling device increases successively; And upper runner recess matches with lower runner projection, therefore the trapezoidal angle of upper runner recess also increases successively;
As shown in Figure 7, the 5th group of rolling device is comprised of the 5th runner 29 and two position-limited wheels 30, and two position-limited wheels 30 are arranged at respectively the both sides, below of the 5th runner 29; The middle part of the 5th runner 29 forms rectangular preiection;
As shown in Figure 8, the 6th group of rolling device is comprised of runner on the 6th and the 6th time runner; The middle part of the 6th time runner forms rectangular preiection; On the 6th, the middle part of runner forms rectangular recess, and the recess of runner matches with the projection of the 6th time runner on the 6th;
As shown in Figure 9, the 7th group of rolling device is comprised of runner on the 7th and the 7th time runner; The middle part of the 7th time runner forms rectangular preiection; On the 7th, the middle part of runner forms rectangular recess, and the recess of runner matches with the projection of the 7th time runner on the 7th;
One side of frame 13 is provided with mould underframe 12, is provided with lower bolster 11 on mould underframe 12, is provided with perforating die 9 and knife edge die 10 on lower bolster 11; The top of perforating die 9 and knife edge die 10 is respectively arranged with attacking head 8; Attacking head 8 can move up and down under the drive of oil cylinder 7.
As shown in figure 10, perforating die 9 comprises perforating die base 93, and the top of perforating die base 93 is provided with jumper bar 92, and the bottom of jumper bar 92 is provided with drift 91; Between jumper bar 92 and perforating die base 93, be provided with spring 94; When jumper bar 92 catches a packet 8 pressure, the elastic force that jumper bar 92 overcomes spring 94 moves downward, and drift 91 can carry out punching operation to workpiece; Complete after punching, jumper bar 92 resets under the elastic force effect of spring 94;
As shown in figure 11, knife edge die 10 comprises knife edge die base 103, and the top of knife edge die base 103 is provided with cutting knife 101, between cutting knife 101 and knife edge die base 103, is provided with knife edge die spring 102; When cutting knife 101 catches a packet 8 pressure, the elastic force that cutting knife 101 overcomes knife edge die spring 102 moves downward, and cutting knife 101 can cut off operation to workpiece; Complete after cut-out, cutting knife 101 resets under the elastic force effect of knife edge die spring 102.
The rolling forming method that adopts centrifugal blower bracing piece of the present utility model, comprises the following steps:
The first step, smooths coiled strip (processing the raw material of bracing piece) by levelling machine;
Second step, make coiled strip through first group of rolling device first between runner 21 and first time runner 22, now the shape of coiled strip does not change;
The 3rd step, make coiled strip through second group of rolling device second between runner 23 and second time runner 24, now coiled strip both sides turn down downwards, but turnover vestige is not obvious;
The 4th step, make coiled strip successively through the 3rd group of rolling device and the 4th group of rolling device, because the angle of the trapezoidal projection of second group of rolling device, the 3rd group of rolling device, the 4th group of rolling device increases successively, coiled strip is after the 3rd group of rolling device and the 4th group of rolling device, the vestige of coiled strip two ends turnover is more and more obvious, and coiled strip middle part almost becomes 90 degree with the flanging at two ends;
The 5th step, makes coiled strip through the 5th group of rolling device, and the wheel limit of two position-limited wheels 30 props up the flanging at coiled strip two ends;
The 6th step, makes coiled strip successively through the 6th group of rolling device and the 7th group of rolling device, and coiled strip is shaped completely, and coiled strip middle part becomes 90 degree with the flanging at two ends, realizes roll forming;
The 7th step, makes the bracing piece of roll forming enter perforating die 9; Make the oil cylinder 7 of perforating die 9 tops drive attacking head 8 to move downward, attacking head 8 impacts on the jumper bar 92 of perforating die 9, and the impulsive force that attacking head 8 produces makes 91 pairs of bracing pieces of drift of perforating die 9 carry out drilling operation;
The 8th step, makes the bracing piece having openning hole enter knife edge die 10; Make the oil cylinder 7 of knife edge die 10 tops drive attacking head 8 to move downward, attacking head 8 impacts on the cutting knife 101 of knife edge die 10, the impulsive force that attacking head 8 produces presses down cutting knife 101, bracing piece is cut off to operation, complete the processing of whole bracing piece, bracing piece now can use on blower fan.
Claims (9)
1. the Roll forming apparatus of a centrifugal blower bracing piece, it is characterized in that: comprise frame (13), the top of frame (13) is provided with many connecting axles (4), between many connecting axles (4), by gear, realize connection, when wherein a connecting axle (4) rotates, can drive other connecting axle (4) synchronously to rotate; Wherein on a connecting axle (4), be provided with driven pulley (6), driven pulley (6) connects driving pulley (14) by Timing Belt (5); Driving pulley (14) is realized and being driven by motor (15), thereby drives many connecting axles (4) rotation;
On part connecting axle (4), be provided with runner or lower runner; Upper runner and lower runner form seven groups of rolling devices that are arranged in order;
One side of frame (13) is provided with mould underframe (12), is provided with lower bolster (11) on mould underframe (12), is provided with perforating die (9) and knife edge die (10) on lower bolster (11); The top of perforating die (9) and knife edge die (10) is respectively arranged with attacking head (8); Attacking head (8) can move up and down under the drive of oil cylinder (7).
2. the Roll forming apparatus of centrifugal blower bracing piece according to claim 1, is characterized in that: described first group of rolling device comprises runner on first (21) and first time runner (22); The middle part of first time runner (22) forms rectangular preiection, and the axial length of projection is consistent with the width of coiled strip; The middle part of runner on first (21) forms rectangular recess, the rectangular recess of runner on first (21) matches with the rectangular preiection of first time runner (22), and the rectangular preiection of first time runner (22) is wrapped by the rectangular recess of runner (21) on first.
3. the Roll forming apparatus of centrifugal blower bracing piece according to claim 2, is characterized in that: described second group of rolling device comprises runner on second (23) and second time runner (24); The middle part of second time runner (24) forms trapezoidal projection, and the top axial length of projection is less than the width of coiled strip; The middle part of runner on second (23) forms trapezoidal recess, and the trapezoidal recess of runner (23) matches with the trapezoidal projection of second time runner (24) on second.
4. the Roll forming apparatus of centrifugal blower bracing piece according to claim 3, is characterized in that: described the 3rd group of rolling device comprises runner on the 3rd (25) and the 3rd time runner (26); The middle part of the 3rd time runner (26) forms trapezoidal projection; The protruding top axial length of the 3rd time runner (26) is consistent with the top axial length of second time runner (24); The protruding trapezoidal angle of the 3rd time runner (26) is greater than the protruding trapezoidal angle of second time runner (24); The middle part of runner on the 3rd (25) forms trapezoidal recess, and the recess of runner (25) matches with the projection of the 3rd time runner (26) on the 3rd.
5. the Roll forming apparatus of centrifugal blower bracing piece according to claim 4, is characterized in that: described the 4th group of rolling device comprises runner on the 4th (27) and the 4th time runner (28); The middle part of the 4th time runner (28) forms trapezoidal projection; The protruding top axial length of the 4th time runner (28) is consistent with the top axial length of the 3rd time runner (26); The protruding trapezoidal angle of the 4th time runner (28) is greater than the protruding trapezoidal angle of the 3rd time runner (26); The middle part of runner on the 4th (27) forms trapezoidal recess, and the recess of runner (27) matches with the projection of the 4th time runner (28) on the 4th.
6. the Roll forming apparatus of centrifugal blower bracing piece according to claim 5, it is characterized in that: described the 5th group of rolling device comprises the 5th runner (29) and two position-limited wheels (30), and two position-limited wheels (30) are arranged at respectively the both sides, below of the 5th runner (29); The middle part of the 5th runner (29) forms rectangular preiection.
7. the Roll forming apparatus of centrifugal blower bracing piece according to claim 6, is characterized in that: described the 6th group of rolling device comprises runner and the 6th time runner on the 6th; The middle part of the 6th time runner forms rectangular preiection; On the 6th, the middle part of runner forms rectangular recess, and the recess of runner matches with the projection of the 6th time runner on the 6th; Described the 7th group of rolling device comprises runner and the 7th time runner on the 7th; The middle part of the 7th time runner forms rectangular preiection; On the 7th, the middle part of runner forms rectangular recess, and the recess of runner matches with the projection of the 7th time runner on the 7th.
8. the Roll forming apparatus of centrifugal blower bracing piece according to claim 1, it is characterized in that: described perforating die (9) comprises perforating die base (93), the top of perforating die base (93) is provided with jumper bar (92), and the bottom of jumper bar (92) is provided with drift (91); Between jumper bar (92) and perforating die base (93), be provided with spring (94); When jumper bar (92) catch a packet head (8) pressure time, the elastic force that jumper bar (92) overcomes spring (94) moves downward, drift (91) can carry out punching operation to workpiece; Complete after punching, jumper bar (92) resets under the elastic force effect of spring (94).
9. the Roll forming apparatus of centrifugal blower bracing piece according to claim 1, it is characterized in that: described knife edge die (10) comprises knife edge die base (103), the top of knife edge die base (103) is provided with cutting knife (101), between cutting knife (101) and knife edge die base (103), is provided with knife edge die spring (102); When cutting knife (101) catch a packet head (8) pressure time, the elastic force that cutting knife (101) overcomes knife edge die spring (102) moves downward, cutting knife (101) can cut off operation to workpiece; Complete after cut-out, cutting knife (101) resets under the elastic force effect of knife edge die spring (102).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201420114691.3U CN203725591U (en) | 2014-03-14 | 2014-03-14 | Roll forming device of centrifugal-fan stiffener |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201420114691.3U CN203725591U (en) | 2014-03-14 | 2014-03-14 | Roll forming device of centrifugal-fan stiffener |
Publications (1)
Publication Number | Publication Date |
---|---|
CN203725591U true CN203725591U (en) | 2014-07-23 |
Family
ID=51195694
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201420114691.3U Withdrawn - After Issue CN203725591U (en) | 2014-03-14 | 2014-03-14 | Roll forming device of centrifugal-fan stiffener |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN203725591U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103817215A (en) * | 2014-03-14 | 2014-05-28 | 浙江亿利达风机股份有限公司 | Rolling molding device and rolling molding method for centrifugal fan reinforcing rod |
-
2014
- 2014-03-14 CN CN201420114691.3U patent/CN203725591U/en not_active Withdrawn - After Issue
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103817215A (en) * | 2014-03-14 | 2014-05-28 | 浙江亿利达风机股份有限公司 | Rolling molding device and rolling molding method for centrifugal fan reinforcing rod |
CN103817215B (en) * | 2014-03-14 | 2015-08-19 | 浙江亿利达风机股份有限公司 | The Roll forming apparatus of centrifugal blower bracing piece and rolling forming method |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN104324995B (en) | Automatic rolling machine | |
CN208246917U (en) | Grooving cutting machine is used in a kind of production of industrial brush | |
CN104908111B (en) | A kind of multiaspect punching groove milling equipment | |
CN204148865U (en) | Arc-shaped workpiece rotary drilling grooving apparatus | |
CN203725591U (en) | Roll forming device of centrifugal-fan stiffener | |
CN203875605U (en) | Automatic machine for coining of sealing plates | |
CN203579713U (en) | Strip cutting machine | |
CN103817215B (en) | The Roll forming apparatus of centrifugal blower bracing piece and rolling forming method | |
CN104191656A (en) | Hand strap cutting and penetrating mechanism of carton non-woven fabric hand strap forming machine | |
CN202147411U (en) | Double-punch punching machine | |
CN203991852U (en) | A kind of Pneumatic bending machine | |
CN208259341U (en) | Perforating device is used in a kind of production of industrial brush | |
CN104339714B (en) | Hard-cover box full-automatic priming scraping machine | |
CN207044297U (en) | A kind of chamfering device | |
CN206123799U (en) | Digital piercing press | |
CN218395552U (en) | Three-slide block double-action full-automatic cup punching machine | |
CN103658288A (en) | Hardware tool discharging device and feeding equipment special for hardware tool discharging device | |
CN204354373U (en) | A kind of edge-neatening apparatus of capsule production equipment | |
CN103056922A (en) | Twice-die-cutting device | |
CN107492775A (en) | A kind of binding post flattens trimming device and its processing method automatically | |
CN203611310U (en) | Sponge punching machine | |
CN203062870U (en) | Flat pressing circular die cutting device | |
CN106253601B (en) | A kind of rotor, stator automatic laminating device | |
CN202626209U (en) | Dual mechanical leather punching device | |
CN206317190U (en) | A kind of tenon process equipment |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
AV01 | Patent right actively abandoned |
Granted publication date: 20140723 Effective date of abandoning: 20150819 |
|
RGAV | Abandon patent right to avoid regrant |