CN106078834A - Rubber bar shearing device - Google Patents
Rubber bar shearing device Download PDFInfo
- Publication number
- CN106078834A CN106078834A CN201610443976.5A CN201610443976A CN106078834A CN 106078834 A CN106078834 A CN 106078834A CN 201610443976 A CN201610443976 A CN 201610443976A CN 106078834 A CN106078834 A CN 106078834A
- Authority
- CN
- China
- Prior art keywords
- rubber bar
- bar
- rubber
- chopper
- conveying roller
- 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.)
- Pending
Links
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
- B26D1/01—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 does not travel with the work
- B26D1/04—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 does not travel with the work having a linearly-movable cutting member
- B26D1/06—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 does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
- B26D1/08—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 does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates of the guillotine type
-
- 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
- B26D7/06—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
Abstract
The invention belongs to rubber production and processing field, be specifically related to a kind of rubber bar shearing device, including chopper and batch (-type) feed mechanism, described chopper vertically moves back and forth, and chopper coordinates composition shear action with workbench, is used for cutting off rubber bar；Described batch (-type) feed mechanism can be by rubber bar intermittent delivery below chopper, particularly as follows: when chopper lifts, and the feeding forward of rubber bar, the rubber bar feed-disabling when chopper falls.Rubber bar can efficiently be sheared by the shearing device of the present invention, prevents the fracture of rubber bar or piles up.
Description
Technical field
The invention belongs to rubber production and processing field, be specifically related to a kind of rubber bar shearing device.
Background technology
Rubber processing technique generally comprises the operations such as raw material mixing, pelletize, colouring, extrusion molding, shearing, rubber of the prior art
Often there is following defect in skin process equipment: 1. after extruder is shut down, rate of cooling is relatively slow, easily causes electric elements aging, and not
It is easy to plant maintenance；2. the rubber bar curing rate of extruder extrusion is relatively slow, is easily generated deformation, affects product matter in course of conveying
Amount；3. the hauling speed of rubber bar traction apparatus cannot real-time monitoring, be easily caused rubber bar and break or pile up；4. rubber bar lacks
Limit guiding device, easily produces skew in course of conveying.
Summary of the invention
The technical problem to be solved of the present invention is to provide a kind of novel rubber bar shearing device, this system of processing
The defect of conventional process tools can be overcome, improve rubber and become to produce working (machining) efficiency and crudy.
The present invention solves above-mentioned technical problem by the following technical solutions:
A kind of rubber bar shearing device, including chopper and batch (-type) feed mechanism, described chopper is the most back and forth transported
Dynamic, chopper coordinates composition shear action with workbench, is used for cutting off rubber bar；Described batch (-type) feed mechanism can be by rubber bar
Intermittent delivery below chopper, particularly as follows: when chopper lifts, the feeding forward of rubber bar, when chopper falls, rubber bar stops
Only feeding.
It is an advantage of the current invention that: rubber bar can efficiently be sheared by shearing device, prevent the fracture of rubber bar or heap
Long-pending.
Accompanying drawing explanation
Fig. 1 is the structural representation of the extruder of the present invention；
Fig. 2 is the plan structure schematic diagram of the extruder of the present invention；
Fig. 3 is the bosh structural representation of the present invention；
Fig. 4 is the shearing device structural representation of the present invention；
Fig. 5 is the shearing device plan structure schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail.
In describing the invention, it should be noted that term " on ", D score, "left", "right", " interior ", the instruction such as " outward "
Orientation or position relationship be based on orientation shown in the drawings or position relationship, be for only for ease of description the present invention and simplification retouch
State rather than indicate or imply that the device of indication or element must have particular orientation structure and an operation, therefore it is not intended that
Limitation of the present invention.
A kind of rubber system of processing, including:
Extruder 10, extruder 10 includes that auger conveyor 11, the discharge end of auger conveyor 11 are provided with extrusion 12, spiral shell
Rotation carrier 11 outer wall is provided with heating jacket 13 and cooling water pipe 14, and extruder 10 is used for granular material heating and melting,
And it is extruded into rubber bar 50, the cooling water pipe 14 fast cooling after extruder 10 is shut down；
Bosh 20, bosh 20 postpones setting along the extrusion 12 of extruder 10, and bosh 20 is built with cold
But water, the rubber bar 50 of extruder 10 extrusion enters in bosh 20, makes rubber bar 50 accelerate hardening by cooling；
Shearing device 30, enters this shearing device 30 after the cooling of rubber bar 50 cooled tank 20, and shearing device 30 includes
Chopper 39 and batch (-type) feed mechanism, described chopper 39 vertically moves back and forth, and chopper 39 coordinates composition to cut with workbench
Cut action, be used for cutting off rubber bar 50；Described batch (-type) feed mechanism can be by defeated for rubber bar 50 batch (-type) below chopper 39
Send, particularly as follows: when chopper 39 lifts, rubber bar 50 feeding forward, rubber bar 50 feed-disabling when chopper 39 falls.
Preferably, described heating jacket 13 is two flap-type structures, and heating jacket 13 is enclosed by two halfpipe electrical heating housings
Conjunction forms, and described cooling water pipe 14 is layed in the crevice place between two electrical heating housings.
Preferably, described heating jacket 13 arranges multistage, described cooling water pipe along auger conveyor 11 length direction interval
14 crevice places between every two sections of heating jackets 13 are respectively provided with a water inlet 15.
Preferably, being provided with a tank 16 below described auger conveyor 11, the outlet of described cooling water pipe 14 is passed through water
In groove 16, being connected with discharge pipe line 17 bottom tank 16, discharge pipe line 17 connects with pond, pond further through water pump to cooling pipe
14 each water inlets 15 supply water, and are formed cooling water circulation.Cooling water flows in tank 16 after carrying out heat exchange, enters in tank 16
Entering cooling pond after the preliminary heat radiation of row, cooling pond temperature will not be made to rise too high.Owing to cooling system is only at extruder
10 cool down when shutting down, and the most this volatilization radiating mode has been able to meet Production requirement, it is not necessary to attached heat sinks etc. set
Standby.
Preferably, described bosh 20 is provided with near one end of extrusion 12 for guiding rubber bar 50 to enter cooling water
Ramp 21 bottom groove 20, on described ramp 21 and is equipped with deflector roll 22 bottom bosh 20.Due to freshly extruded rubber bar
50 are not the most fully cured, it is therefore desirable to the guiding smoothing rubber bar 50, prevent bosh 20 edge scratch rubber
Bar 50.
Preferably, the detector unit for detecting rubber bar 50 rate of tension, described detection it are provided with in described bosh 20
Unit includes a torque sensor 23, and the major axis horizontal of torque sensor 23 is arranged, and the main shaft of square sensor 23 is connected with a pendulum
Bar 24, described fork 24 lower end is provided with a horizontal roller 25, and described horizontal roller 25 is pressed in above rubber bar 50.Rate of tension is examined
Survey the rate of tension of unit detection rubber bar 50, prevent rubber bar 50 from tightening, on the one hand it can be avoided that rubber bar 50 ruptures, the opposing party
Face also is able to prevent rubber bar 50 to be suspended in more than the liquid level of bosh 20, loses cooling effect.Concrete, moment of torsion can be passed
Sensor 23 is connected with control system, and control system controls the speed of haulage gear action according to this torque parameter, so that rubber
Bar 50 remains more lax state.
Preferably, between described bosh 20 and shearing device 30, it is additionally provided with a pair conveying roller that is first conveying roller 40,
And first conveying roller 40 one of them roll body by first drive motor 43 drive.This conveying roller provides for rubber bar 50 and mainly leads
Gravitation, draws the continuous feeding forward of rubber bar 50.
Preferably, between described first conveying roller 40 and bosh 20, it is provided with the first position-limited rack 48, described first spacing
Frame 48 includes two spaced vertical rods, and the stage casing of the first conveying roller 40 is just arranged by the space between two vertical rods, rubber bar 50
Pass between two vertical rods, it is ensured that rubber bar 50 is positioned in the middle part of the first conveying roller 40.
Further, the spacing between two vertical rods of described first position-limited rack 48 is adjustable setting.Preferably, two vertical rod
Lower end is each affixed with a base plate 481, and described base plate 481 is hinged on the table, and jointed shaft is provided with locking nut 482,
When locking nut 482 unclamps, it is possible to make vertical rod swing along circular arc path, when locking nut 482 is tightened, it is possible to make vertical rod solid
Fixed.
Further, the lower roll body 42 of the first conveying roller 40 is driven motor 43 to drive by first, the first conveying roller 40 upper
Roll body 41 is arranged on the first plain bearing housing 44, and described first plain bearing housing 44 vertically slides setting, makes first
Distance between two roll bodies of conveying roller 40 is adjustable, and described first plain bearing housing 44 top is connected with the first screw rod 46, and described
The screwed hole offered in the top cross-bar of one screw rod 46 and clutch shaft bearing seat support 45 constitutes threaded engagement, described first screw rod 46
On be set with the first stage clip 47, described first stage clip 47 is positioned at the top of the first plain bearing housing 44 and clutch shaft bearing seat support 45
Between crossbeam.
Described batch (-type) feed mechanism includes a pair conveying roller that is second conveying roller 31, and described second conveying roller 31 is wherein
One roll body is driven by servomotor 32.Concrete, servomotor 32 is set at chopper 39 by control system control, control system
Putting the sensor for detecting chopper 39 running status, when sensor detects chopper 39 lifting, control system controls servo
Motor 32 action, rubber bar 50 feeding forward, when sensor detects that chopper 39 declines, controller control private takes motor 32 and stops
Only, rubber bar 50 feed-disabling, thus realize the batch (-type) feeding of rubber bar 50.
The upper roll body 311 of the second conveying roller 31 is arranged on the second plain bearing housing 33, described second plain bearing housing 33
Vertically it is slidably arranged on the second bearing bracket 34, makes the distance between two roll bodies of the second conveying roller 31 adjustable,
Described second plain bearing housing 33 top is connected with the second screw rod 35, described second screw rod 35 and the top of the second bearing bracket 34
The screwed hole offered on crossbeam constitutes threaded engagement, and described second screw rod 35 is set with the second stage clip, described second stage clip position
Between the second plain bearing housing 33 and the top cross-bar of the second bearing bracket 34.
The roll surface top of the lower roll body 312 of the second conveying roller 31 is concordant with the table top of workbench or slightly higher with workbench platform
Face.Guarantee rubber bar 50 course of conveying does not haves relatively macrorelief, make equipment produce more steady.
Further, between the i.e. rubber bar 50 in described batch (-type) feed mechanism front end enters one end and the second conveying roller 31
Be sequentially provided with the second position-limited rack 301, carrying roller 303 and gatherer, described second position-limited rack 301 include two spaced
Vertical rod, the stage casing of the second conveying roller 31 is just arranged by the space between two vertical rods；Described carrying roller 303 is along rubber bar 50 direct of travel
Interval arranges multiple；Described gatherer includes that two pieces of strip plate bodys 302, two pieces of strip plate bodys 302 are substantially arranged in splayed,
Space between two pieces of strip plate bodys 302 constitutes the passage that rubber bar 50 passes, and the second conveying roller 31 stage casing is just set by this passage
Put, and the wider one end of this passage is arranged near the second conveying roller 31 away from the second conveying roller 31, narrower one end.
Further, the spacing between two vertical rods of described second position-limited rack 301 is adjustable setting.
Preferably, two bottom of upright rods of described second position-limited rack 301 are each connected with an adjustable plate 304, described adjustable plate 304
It is provided with bar hole, and the length direction of bar hole is vertical with the length direction of rubber bar 50, is provided with locking in described bar hole
Bolt 305, adjustable plate 34 is fixedly installed on the table by clamping screw 305 is adjustable.
Further, the spacing between two pieces of strip plate bodys 302 of described gatherer is adjustable setting.
Preferably, being respectively connected with a slide plate 306 outside described two pieces of strip plate bodys 302, described slide plate 306 is provided with waist type
Hole, and the length direction of waist-shaped hole is vertical with the length direction of rubber bar 50, is provided with clamping screw 305, slide plate 306 in waist-shaped hole
It is fixedly installed on the table by clamping screw 305 is adjustable.
Further, it is additionally provided with rubber bar between described batch (-type) feed mechanism and chopper 39 and helps mechanism, described rubber
Bar help mechanism to include two pieces are parallel to each other and clamping plate 36 that plate face is vertical, rubber bar 50 passes between two clamping plate 36, rubber
Bar helps mechanism also to include the depression bar 37 that rubber bar 50 is provided above.
Preferably, the height of spacing between described two clamping plate 36 and described depression bar 37 is adjustable setting.
Concrete, it being respectively provided with an inserted link 361 outside two clamping plate 37, described inserted link 361 is interspersed in the second bearing bracket 34
In the through hole offered on sidewall, through-hole side wall is provided with holding screw 38.
Concrete, described depression bar 37 is L-type, including vertical bar segment and horizontal bar segment, described horizontal bar segment and rubber bar 50
Length direction is parallel, and is pressed in rubber bar 50 upper end, and described vertical bar segment is interspersed on the second bearing bracket 34 on end floor beam
In the vertical hole offered, and vertical hole sidewall is provided with holding screw 38.
The stopping means being used for limiting rubber bar 50 course in the present invention is adjustable setting, so can adapt to
The production of different size rubber, expands the scope of application of equipment, thus reduces device fabrication, R&D costs.
Preferably, described chopper 39 is arranged on a vertical reciprocating crossbeam 391, is connected with bottom described crossbeam 391
Two vertical guide rods 392, the guide pin bushing that described guide rod 392 and workbench are fixedly installed constitutes and is slidably matched, described guide rod 392 by
Second drives motor 393 to drive, and described second drives motor 393 rotation of electric machine main shaft to be transported by toggle 394
The dynamic vertical reciprocating motion being converted into guide rod 392.
Further, the main shaft of described second driving motor 393 is connected with decelerator 395, described toggle 394
It is arranged on decelerator 395 output shaft.The gear ratio of decelerator 395 can be adjusted according to the length of required product, output
Rotating speed is the slowest, and the rubber section cut out is the longest.
The foregoing is only the preferred embodiment of the invention, not in order to limit the invention, all at this
Any amendment, equivalent and the improvement etc. made within the spirit of innovation and creation and principle, should be included in the invention
Protection domain within.
Claims (10)
1. a rubber bar shearing device, it is characterised in that: including chopper and batch (-type) feed mechanism, described chopper is along vertically side
To reciprocating motion, chopper coordinates composition shear action with workbench, is used for cutting off rubber bar；Described batch (-type) feed mechanism can
By rubber bar intermittent delivery below chopper, particularly as follows: when chopper lifts, the feeding forward of rubber bar, when chopper falls
Rubber bar feed-disabling.
Rubber bar shearing device the most according to claim 1, it is characterised in that: described batch (-type) feed mechanism includes a pair
Conveying roller that is second conveying roller, one of them roll body of described second conveying roller is by driven by servomotor.
Rubber bar shearing device the most according to claim 2, it is characterised in that: the upper roll body of the second conveying roller is arranged on
On two plain bearing housings, described second plain bearing housing is vertically slidably arranged on the second bearing bracket, makes second
Distance between two roll bodies of conveying roller is adjustable, and described second plain bearing housing top is connected with the second screw rod, described second screw rod
Constitute threaded engagement with the screwed hole offered in the top cross-bar of the second bearing bracket, described second screw rod is set with second
Stage clip, described second stage clip is between the top cross-bar of the second plain bearing housing and the second bearing bracket.
Rubber bar shearing device the most according to claim 3, it is characterised in that: on the roll surface of the lower roll body of the second conveying roller
Portion is concordant with the table top of workbench or slightly higher with workbench table top.
Rubber bar shearing device the most according to claim 1, it is characterised in that: the i.e. rubber in described batch (-type) feed mechanism front end
The second position-limited rack, carrying roller and gatherer, described second limit it is sequentially provided with between one end and the second conveying roller that leather strap enters
Position frame includes two spaced vertical rods, and the stage casing of the second conveying roller is just arranged by the space between two vertical rods；Described carrying roller
Arrange multiple along rubber bar direct of travel interval；Described gatherer includes two pieces of strip plate bodys, two pieces of strip plate bodys substantially in
Splayed is arranged, the space between two pieces of strip plate bodys constitutes the passage that rubber bar passes, and this passage is just in the second conveying roller
Section is arranged, and the wider one end of this passage is arranged near the second conveying roller away from the second conveying roller, narrower one end.
Rubber bar shearing device the most according to claim 5, it is characterised in that: between two vertical rods of described second position-limited rack
Spacing be adjustable setting.
Rubber bar shearing device the most according to claim 5, it is characterised in that: two pieces of strip plate bodys of described gatherer
Between spacing be adjustable setting.
Rubber bar shearing device the most according to claim 1, it is characterised in that: described batch (-type) feed mechanism and chopper it
Between be additionally provided with rubber bar and help mechanism, described rubber bar help mechanism to include two pieces are parallel to each other and clamping plate that plate face is vertical, rubber
Leather strap passes between two clamping plate, and rubber bar helps mechanism also to include the depression bar that rubber bar is provided above.
Rubber bar shearing device the most according to claim 8, it is characterised in that: the spacing between described two clamping plate and institute
The height stating depression bar is adjustable setting.
Rubber bar shearing device the most according to claim 8, it is characterised in that: described depression bar is L-type, including vertical bar
Section and horizontal bar segment, described horizontal bar segment is parallel with rubber bar length direction, and is pressed in rubber bar upper end, and described vertical bar segment is worn
It is inserted on the second bearing bracket in the vertical hole offered on end floor beam, and vertical hole sidewall is provided with holding screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610443976.5A CN106078834A (en) | 2016-06-17 | 2016-06-17 | Rubber bar shearing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610443976.5A CN106078834A (en) | 2016-06-17 | 2016-06-17 | Rubber bar shearing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106078834A true CN106078834A (en) | 2016-11-09 |
Family
ID=57237801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610443976.5A Pending CN106078834A (en) | 2016-06-17 | 2016-06-17 | Rubber bar shearing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106078834A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107639661A (en) * | 2017-10-23 | 2018-01-30 | 浙江申明制鞋机械有限公司 | Full-automatic numerical control cutter |
| CN116872003A (en) * | 2023-06-25 | 2023-10-13 | 山东通泰橡胶股份有限公司 | Energy-saving rubber conveyer belt and processing device thereof |
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| CN101683740A (en) * | 2008-09-28 | 2010-03-31 | 漯河市罗孚文具制造有限公司 | Pneumatic rubber cutting device |
| JP5323450B2 (en) * | 2008-11-11 | 2013-10-23 | 株式会社シード | Eraser embossing method, embossing apparatus, extrusion molding apparatus and eraser |
| CN103587123A (en) * | 2013-10-29 | 2014-02-19 | 浙江庆元欧迪实业有限公司 | Rubber pad-printing production line |
| CN203919215U (en) * | 2014-06-30 | 2014-11-05 | 俞波军 | A kind of rubber stripping and slicing device |
| CN204819641U (en) * | 2015-07-31 | 2015-12-02 | 东莞市兆科电子材料科技有限公司 | Heat conduction material cutting device |
| CN105538380A (en) * | 2016-01-15 | 2016-05-04 | 新绛县天利塑料化工有限责任公司 | Automatic cutting and conveying device of trademark paper of woven bags or mesh bags |
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2016
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101683740A (en) * | 2008-09-28 | 2010-03-31 | 漯河市罗孚文具制造有限公司 | Pneumatic rubber cutting device |
| JP5323450B2 (en) * | 2008-11-11 | 2013-10-23 | 株式会社シード | Eraser embossing method, embossing apparatus, extrusion molding apparatus and eraser |
| CN101508119A (en) * | 2009-03-27 | 2009-08-19 | 兖州煤业股份有限公司 | Cutting trimming device of conveyer belt |
| CN103587123A (en) * | 2013-10-29 | 2014-02-19 | 浙江庆元欧迪实业有限公司 | Rubber pad-printing production line |
| CN203919215U (en) * | 2014-06-30 | 2014-11-05 | 俞波军 | A kind of rubber stripping and slicing device |
| CN204819641U (en) * | 2015-07-31 | 2015-12-02 | 东莞市兆科电子材料科技有限公司 | Heat conduction material cutting device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107639661A (en) * | 2017-10-23 | 2018-01-30 | 浙江申明制鞋机械有限公司 | Full-automatic numerical control cutter |
| CN116872003A (en) * | 2023-06-25 | 2023-10-13 | 山东通泰橡胶股份有限公司 | Energy-saving rubber conveyer belt and processing device thereof |
| CN116872003B (en) * | 2023-06-25 | 2024-01-26 | 山东通泰橡胶股份有限公司 | Energy-saving rubber conveyer belt and processing device thereof |
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Application publication date: 20161109 |
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| RJ01 | Rejection of invention patent application after publication |