CN204108702U - Drilling tool - Google Patents
Drilling tool Download PDFInfo
- Publication number
- CN204108702U CN204108702U CN201420527048.3U CN201420527048U CN204108702U CN 204108702 U CN204108702 U CN 204108702U CN 201420527048 U CN201420527048 U CN 201420527048U CN 204108702 U CN204108702 U CN 204108702U
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- Prior art keywords
- foundry goods
- channel
- drilled
- drilling tool
- hole
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- 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.)
- Expired - Fee Related
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- 238000005553 drilling Methods 0.000 title claims abstract description 77
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 80
- 239000010959 steel Substances 0.000 claims abstract description 80
- 230000001788 irregular Effects 0.000 claims abstract description 15
- 238000005266 casting Methods 0.000 abstract description 7
- 238000003754 machining Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 6
- 238000003801 milling Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000012809 cooling fluid Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000997 High-speed steel Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005555 metalworking Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Landscapes
- Drilling And Boring (AREA)
Abstract
The utility model provides a drilling frock. The utility model discloses a drilling tool, which comprises two channel steels, a tool rack, a plurality of fixed jackscrews and a plurality of pressing blocks; the bottom of the tool rack is fixed on the drill floor by the pressing block; the two channel steels are arranged on the tool rack in parallel; a casting to be drilled is placed on the channel steel and extends into the tool rack; the fixed jacking wire is used for fixing the part of the casting extending into the tool rack; at least one of the two channel steels is a movable channel steel. The utility model discloses can press from both sides the dress, fix at current drilling machine equipment to irregular foundry goods, utilize the drilling machine to carry out reverse drilling, counter sinking, improve machining efficiency.
Description
Technical field
The utility model relates to drilling technique, particularly relates to a kind of drilling tool.
Background technology
Crankshaft balance weight used for oil extractor is at present irregular foundry goods, needs to carry out milling to foundry goods bottom surface as requested and puts down, and carry out in the plane holing and spot-facing.In prior art, the general boring machine that adopts carries out horizontal boring, spot-facing to foundry goods, but due to after Boring machine processing completes boring bottom surface, need again to hole line location, location difficulty that boring machine is rule, drilling efficiency is low.
In order to avoid the problems referred to above, drilling machine can also be adopted to carry out holing, spot-facing, but due to foundry goods be that irregular foundry goods, casting dimension are comparatively large, directly cannot carry out clamping on drilling machine, foundry goods is fixing difficult.
Therefore, problems of the prior art are, use that drilling machine carries out holing, spot-facing time foundry goods fixing difficulty.
Utility model content
The utility model provides a kind of drilling tool, and when holing in prior art to overcome, the problem of difficulty fixed by foundry goods.
The utility model provides a kind of drilling tool, comprising:
Two channel-section steels, frock stand, multiple fixing jackscrew, multiple briquettings; Wherein, the bottom of described frock stand is fixed on rig floor by described briquetting; Described two channel-section steels are parallel to be placed on described frock stand; Foundry goods hole to be drilled placed by described channel-section steel, and described foundry goods hole to be drilled extends into the inside of described frock stand; The part that extend into the inside of described frock stand of described fixing jackscrew to described foundry goods is fixed; At least one of described two channel-section steels is movable channel-section steel.
In the utility model, a kind of possible implementation is, described two channel-section steels are all movable channel-section steel.
In the utility model, a kind of possible implementation is, described the hole to be drilled of foundry goods hole to be drilled faces up.
In the utility model, a kind of possible implementation is, described frock stand is the bascule that spill shaped steel is welded.
In the utility model, a kind of possible implementation is, described foundry goods hole to be drilled is irregular foundry goods.
In the utility model, a kind of possible implementation is, described multiple briquetting is fixed on rig floor by the bottom of screw by described frock stand.
In the utility model, a kind of possible implementation is, the quantity of described fixing jackscrew is determined according to the size of described foundry goods hole to be drilled.
In the utility model, a kind of possible implementation is, the cross section of described frock stand is rectangle.
In the utility model, a kind of possible implementation is, described fixing jackscrew is evenly evenly distributed on described foundry goods hole to be drilled.
The utility model drilling tool, comprises, two channel-section steels, frock stand, multiple fixing jackscrew, multiple briquettings; Wherein, the bottom of described frock stand is fixed on rig floor by described briquetting; Described two channel-section steels are parallel to be placed on described frock stand; Foundry goods hole to be drilled placed by described channel-section steel, and described foundry goods hole to be drilled extends into the inside of described frock stand; The part that extend into the inside of described frock stand of described fixing jackscrew to described foundry goods is fixed; At least one of described two channel-section steels is movable channel-section steel, can clamp, be fixed on existing drilling machine equipment, utilize drilling machine oppositely to hole, spot-facing to irregular foundry goods, and when holing in prior art to overcome, the problem of difficulty fixed by foundry goods.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 be the utility model drilling tool embodiment one face structural representation one;
Figure 1A be the utility model drilling tool embodiment one face structural representation two;
Fig. 2 is the side-looking structural representation one of the utility model drilling tool embodiment one;
Fig. 2 A is the side-looking structural representation two of the utility model drilling tool embodiment one;
Fig. 3 is the plan structure schematic diagram of the utility model drilling tool embodiment one.
Description of reference numerals:
1: channel-section steel;
2: frock stand;
3: fixing jackscrew;
4: briquetting;
5: spot-facing.
Detailed description of the invention
For making the object of the utility model embodiment, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Fig. 1 be the utility model drilling tool embodiment one face structural representation, Figure 1A be the utility model drilling tool embodiment one face structural representation two, Fig. 2 is the side-looking structural representation one of the utility model drilling tool embodiment one, the plan structure schematic diagram of Fig. 2 A to be the side-looking structural representation two, Fig. 3 of the utility model drilling tool embodiment one be the utility model drilling tool embodiment one.
As shown in Figure 1, the drilling tool of the present embodiment, comprising:
Two channel-section steels 1, frock stand 2, multiple fixing jackscrew 3, multiple briquettings 4; Wherein, the bottom of described frock stand 2 is fixed on rig floor by described briquetting 4; Described two channel-section steels 1 are parallel to be placed on described frock stand 2; Foundry goods hole to be drilled placed by described channel-section steel 1, and described foundry goods hole to be drilled extends into the inside of described frock stand 2; The part that extend into the inside of described frock stand 2 of described fixing jackscrew 3 to described foundry goods is fixed; At least one of described two channel-section steels 1 is movable channel-section steel.
Structure shown in dotted lines in Figure 1 is described foundry goods hole to be drilled.
In the present embodiment, a kind of possible implementation is, described the hole to be drilled of foundry goods hole to be drilled faces up.
The drilling tool of the present embodiment, mainly carry out back-drilled hole and anti-spot-facing for irregular foundry goods, irregular foundry goods crankshaft balance weight carries out bottom surface processing on milling machine, after completing, utilize template carry out milling complete after plane rule, improve line efficiency, decrease personnel line time.Adopt the drilling tool of the present embodiment, erose foundry goods can be clamped, be fixed on existing drilling machine equipment, utilize drilling machine oppositely to hole, spot-facing.
Spot-facing is a kind of method for metal working, refers to processing column shape counter sink, taper counter sink and boss section etc. on the hole processed.The cutter used during spot-facing is called counterbit, generally manufactures with high-speed steel.The counterbit of processing major diameter boss section, available carbide alloy regrinding type blade or indexable formula blade, by method that is inserted or machine folder, be fixed on cutter hub and make.The effect of counterbit guide pillar is guiding, coaxial with original hole to ensure by ream counter sink.
The object of spot-facing is the perpendicularity in order to ensure aperture and centerline hole, so that the part position be connected with hole is correct, connects reliable.Go out cylindricality or tapered counterbore at the connection nose end ream of workpiece, imbed in hole relevant part is coupled together with counter-sunk screw, make outward appearance neat, rigging position is compact.By aperture flattening end surface, and vertical with centerline hole, the end face of connecting bolt (or nut) and connector can be made to keep good contact.
Specifically, as shown in Figure 1, 2, Fig. 2 for the drilling tool shown in Fig. 1 from the right side side view to the left, drilling tool is by two channel-section steels 1, Working gantry 2, multiple fixing jackscrew 3, multiple briquetting 4, and Working gantry 2 can form for steel welding connects; Briquetting 4 is be fixed on rig floor by the bottom of frock stand 2; Faced up by Mechanical processing of casting, namely bore surfaces upward, after hanging in the frock stand 2 fixed, for foundry goods bore surfaces being carried out hole, spot-facing, one of them movable channel-section steel, on frock stand 2, before putting into foundry goods, lifts by two parallel cross-arms of channel-section steel 1, after putting into foundry goods, put down by movable channel-section steel, make channel-section steel 1 cross-arm on frock stand 2, foundry goods is placed on channel-section steel again, namely the top of foundry goods can ride in the Baltimore groove of channel-section steel, and movable channel-section steel utilizes the deadweight of foundry goods to be fixed; Fixing jackscrew 3 is finally adopted to be fixed the casting portion stretched in frock stand 2.
In embodiment of the present utility model, a kind of possible implementation is, described two channel-section steels 1 are all movable channel-section steel.
Movable channel-section steel is convenient more convenient when foundry goods hole to be drilled being put into described frock stand.
In embodiment of the present utility model, a kind of possible implementation is, described frock stand is the bascule that spill shaped steel is welded.
Described spill shaped steel is " [" shape.
The rectangular steel of channel-section steel to be cross section be groove type.Channel-section steel belongs to building to be used and machinery carbon structural steels, and be the shaped steel steel of compound section, its section configuration is flute profile.Channel-section steel is mainly used in building structure, curtain wall engineering, plant equipment and Rail car manufacture etc.In use require that it has good welding, rivet performance and comprehensive mechanical performance.The raw material steel billet producing channel-section steel is carbon junction steel or the low-alloy steel steel billet that phosphorus content is no more than 0.25%.Finished product channel-section steel is through heat processing and forming, normalizing or hot-rolled state delivery.
Channel-section steel divides common channel-section steel and thin-wall channel.
As shown in Figure 1A, 2A, the size of frock stand 2 such as can be set to height 1170mm, length 852mm, external width 646mm, and the inner width of described frock stand is 550mm.
Fig. 3 is the plan structure figure of drilling tool, and 5 in Fig. 3 is spot-facing.
As shown in Figure 3, drilling tool comprises: two channel-section steels 1, Working gantry 2, multiple fixing jackscrew 3, multiple briquettings 4, and Working gantry 2 can form for steel welding connects; Briquetting 4 is be fixed on rig floor by the bottom of frock stand 2; Faced up by Mechanical processing of casting, namely bore surfaces upward, after hanging in the frock stand 2 fixed, for foundry goods bore surfaces being carried out hole, spot-facing, two parallel cross-arms of channel-section steel 1 are on frock stand 2, and foundry goods is placed on channel-section steel, and namely the top of foundry goods can ride in the Baltimore groove of channel-section steel; Fixing jackscrew 3 is for being fixed the casting portion stretched in frock stand 2.
In embodiment of the present utility model, a kind of possible implementation is, described foundry goods hole to be drilled is irregular foundry goods.
In the utility model, can also be fixed so that hole or spot-facing, not as limit as regular foundry goods for other foundry goods.
Foundry goods hole to be drilled described in the utility model is mainly for irregular foundry goods, and crankshaft balance weight such as used for oil extractor, oil pumper is a kind of machinery equipment of recover petroleum, is commonly called as " machine of kowtowing ", makes oil go out well by the way of pressurization.When oil pumper upstroke, oil pipe elastic shrinkage moves upward, and driving mechanical block-relief oil production device moves upward, and clashes into sliding sleeve and produces vibration; Meanwhile, copper current only valve cuts out, and reducing piston assembly shutoff oil is when oil pumper down stroke, and oil pipe elastic elongation moves downward, and driving mechanical block-relief oil production device moves downward, and clashes into sliding sleeve and produces vibration; Meanwhile, reversed check valve part is closed, and reducing piston assembly is shutoff oil jacket ring shaped oil passage still, makes reversed check valve lower zone form higher-pressure region, and the oil flow channel of this motion again in formation produces a kind of reverse impulsive force.
The drilling tool of the present embodiment, comprising: two channel-section steels, frock stand, multiple fixing jackscrew, multiple briquettings; Wherein, the bottom of described frock stand is fixed on rig floor by described briquetting; Described two channel-section steels are parallel to be placed on described frock stand; Foundry goods hole to be drilled placed by described channel-section steel, and described foundry goods hole to be drilled extends into the inside of described frock stand; The part that extend into the inside of described frock stand of described fixing jackscrew to described foundry goods is fixed; At least one of described two channel-section steels is movable channel-section steel, can clamp, be fixed on existing drilling machine equipment, utilize drilling machine oppositely to hole, spot-facing to irregular foundry goods, improves working (machining) efficiency, can also make full use of stand-by equipment.
Adopt several specific embodiment below, the purpose of this utility model, technical scheme and beneficial effect are further elaborated.
In the utility model embodiment two, on the basis of the structure of the described drilling tool of embodiment one, further, described multiple briquetting 4 is fixed on rig floor by the bottom of screw by described frock stand 2.
Specifically, as shown in Figure 1, 2, described multiple briquetting 4 is fixed on rig floor by the bottom of screw by described frock stand 2.
In embodiment of the present utility model, a kind of possible implementation is, the quantity of described fixing jackscrew 3 is determined according to the size of described foundry goods hole to be drilled.
Size is larger, and the quantity of described fixing jackscrew 3 is more.
Withstand described foundry goods hole to be drilled with fixing jackscrew, described foundry goods hole to be drilled can not be moved around.
In embodiment of the present utility model, a kind of possible implementation is, the cross section of described frock stand 2 is rectangle.
As shown in Figure 3, the cross section of described frock stand 2 is rectangle, such as, as shown in Figure 1A, 2A, and length 852mm, width 646mm.
In the utility model, the size and shape of described frock stand 2 only illustrates, not as limit.
The drilling tool of the present embodiment, comprising: two channel-section steels, frock stand, multiple fixing jackscrew, multiple briquettings; Wherein, the bottom of described frock stand is fixed on rig floor by described briquetting; Described two channel-section steels are parallel to be placed on described frock stand; Foundry goods hole to be drilled placed by described channel-section steel, and described foundry goods hole to be drilled extends into the inside of described frock stand; The part that extend into the inside of described frock stand of described fixing jackscrew to described foundry goods is fixed; At least one of described two channel-section steels is movable channel-section steel, and the bottom of described frock stand is fixed on rig floor by screw by described multiple briquetting; The quantity of described fixing jackscrew is determined according to the size of described foundry goods hole to be drilled; Described fixing jackscrew is evenly evenly distributed on described foundry goods hole to be drilled, can clamp, be fixed on existing drilling machine equipment, utilize drilling machine oppositely to hole, spot-facing to irregular foundry goods, improves working (machining) efficiency, can also make full use of stand-by equipment.
In the utility model embodiment three, on the basis of the structure of the described drilling tool of embodiment one, two, further, a kind of possible implementation is, described fixing jackscrew is evenly evenly distributed on described foundry goods hole to be drilled.
Be uniformly distributed, make described foundry goods uniform force hole to be drilled, described foundry goods hole to be drilled can better be fixed.
The drilling tool of the utility model embodiment can carry out on the type drilling machine of Z3063 × 20/1 that irregular foundry goods oil pumping machine crank balance weight carries out holing, spot-facing.
Drilling machine refers to the lathe mainly using drill bit machining hole (as boring, reaming, fraising, tapping, spot-facing etc.) on workpiece.Usual bit is main motion, and drill bit moves axially as feed motion.Drilling machine structure is simple, and machining accuracy is relatively low, can holes drilled through, blind hole, changes special tool, can expand, spot-facing, reams or carries out the processing such as tapping.In process, workpiece is motionless, allows cutter move, and by center cutter alignment hole center, and makes cutter rotate (main motion).The feature of drilling machine is that workpiece maintains static, and cutter rotates.
Drilling machine is mainly divided into following a few class according to purposes and structure:
1, vertical:
Workbench and main spindle box can vertical movements on column, for processing middle-size and small-size workpiece.
2, desk-top:
Be called for short bench drill.A kind of minitype vertical type drilling machine, maximum drilling diameter is 12 ~ 15 millimeters, is arranged on vice bench and uses, and mostly is and manually enters to bore, and is commonly used to the aperture etc. processing miniature workpiece.
3, rocker-arm:
Main spindle box can move on rocking arm, and rocking arm can turn round and be elevated, and workpiece maintains static, and is applicable to process workpiece that is heavy and porous greatly, is widely used in machine-building.
4, deep hole drilling machine:
With the specialized machine tool in the much bigger hole (deep hole as parts such as gun barrel, gun barrel and machine tool chief axis) of depth drill drilling depth ratio diameter, for ease of removing chip and avoiding lathe too tall and big, be generally horizontal layout, standing have cooling fluid conveying device (inputting cooling fluid to cutting position by cutter interior) and cycle withdrawing chip removal device etc.
5, centre-drilling lathe: for the centre bore at working shaft-like part two ends.
6, milling and drilling machine: workbench can indulge transverse shifting, and auger spindle is arranged vertically, can carry out the drilling machine of milling.
7, horizontal drilling machine: major axis horizontal is arranged, the vertically moving drilling machine of main spindle box.General higher than upright drill working (machining) efficiency, can multiaspect process simultaneously.
In July, 2013, this drilling tool is tried out in TulufanHami oil field machinery plant.Through field trial, this drilling tool can be satisfied with irregular foundry goods crankshaft balance weight and hole on drilling machine and the demand of anti-spot-facing, and owing to adopting template marking, reduce the line time, the drilling efficiency of drilling machine is better than boring machine simultaneously, improves operating efficiency greatly, and efficiency improves 1 times nearly.
The drilling tool of the present embodiment, comprising: two channel-section steels, frock stand, multiple fixing jackscrew, multiple briquettings; Wherein, the bottom of described frock stand is fixed on rig floor by described briquetting; Described two channel-section steels are parallel to be placed on described frock stand; Foundry goods hole to be drilled placed by described channel-section steel, and described foundry goods hole to be drilled extends into the inside of described frock stand; The part that extend into the inside of described frock stand of described fixing jackscrew to described foundry goods is fixed; At least one of described two channel-section steels is movable channel-section steel, and the bottom of described frock stand is fixed on rig floor by screw by described multiple briquetting; The quantity of described fixing jackscrew is determined according to the size of described foundry goods hole to be drilled; Described fixing jackscrew is evenly evenly distributed on described foundry goods hole to be drilled, can clamp, be fixed on existing drilling machine equipment, utilize drilling machine oppositely to hole, spot-facing to irregular foundry goods, improves working (machining) efficiency, can also make full use of stand-by equipment.
Last it is noted that above each embodiment is only in order to illustrate the technical solution of the utility model, be not intended to limit; Although be described in detail the utility model with reference to foregoing embodiments, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of each embodiment technical scheme of the utility model.
Claims (9)
1. a drilling tool, is characterized in that, comprising:
Two channel-section steels, frock stand, multiple fixing jackscrew, multiple briquettings; Wherein, the bottom of described frock stand is fixed on rig floor by described briquetting; Described two channel-section steels are parallel to be placed on described frock stand; Foundry goods hole to be drilled placed by described channel-section steel, and described foundry goods hole to be drilled extends into the inside of described frock stand; The part that extend into the inside of described frock stand of described fixing jackscrew to described foundry goods is fixed; At least one of described two channel-section steels is movable channel-section steel.
2. drilling tool according to claim 1, is characterized in that, described two channel-section steels are all movable channel-section steel.
3. drilling tool according to claim 1 and 2, is characterized in that, described the hole to be drilled of foundry goods hole to be drilled faces up.
4. drilling tool according to claim 3, is characterized in that, described frock stand is the bascule that spill shaped steel is welded.
5. drilling tool according to claim 4, is characterized in that, described foundry goods hole to be drilled is irregular foundry goods.
6. drilling tool according to claim 5, is characterized in that, described multiple briquetting is fixed on rig floor by the bottom of screw by described frock stand.
7. drilling tool according to claim 6, is characterized in that, the quantity of described fixing jackscrew is determined according to the size of described foundry goods hole to be drilled.
8. drilling tool according to claim 7, is characterized in that, the cross section of described frock stand is rectangle.
9. drilling tool according to claim 8, is characterized in that, described fixing jackscrew is evenly evenly distributed on described foundry goods hole to be drilled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420527048.3U CN204108702U (en) | 2014-09-12 | 2014-09-12 | Drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420527048.3U CN204108702U (en) | 2014-09-12 | 2014-09-12 | Drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204108702U true CN204108702U (en) | 2015-01-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420527048.3U Expired - Fee Related CN204108702U (en) | 2014-09-12 | 2014-09-12 | Drilling tool |
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| CN (1) | CN204108702U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104722861A (en) * | 2015-03-19 | 2015-06-24 | 苏州瑞日纺织科技有限公司 | Tapping device |
-
2014
- 2014-09-12 CN CN201420527048.3U patent/CN204108702U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104722861A (en) * | 2015-03-19 | 2015-06-24 | 苏州瑞日纺织科技有限公司 | Tapping device |
| CN104722861B (en) * | 2015-03-19 | 2017-04-05 | 苏州瑞日纺织科技有限公司 | A kind of tapping device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150121 |
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| CF01 | Termination of patent right due to non-payment of annual fee |