CN104787401A - Steel ball counting machine - Google Patents
Steel ball counting machine Download PDFInfo
- Publication number
- CN104787401A CN104787401A CN201510162570.5A CN201510162570A CN104787401A CN 104787401 A CN104787401 A CN 104787401A CN 201510162570 A CN201510162570 A CN 201510162570A CN 104787401 A CN104787401 A CN 104787401A
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- China
- Prior art keywords
- steel ball
- frame
- track
- ball
- track plates
- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B57/00—Automatic control, checking, warning, or safety devices
- B65B57/20—Applications of counting devices for controlling the feed of articles
Abstract
The invention relates to a steel ball counting machine which comprises a rack. A feeding device is installed at the right end of the rack, and a rail base plate is provided with the feeding device in a jointed mode. The rail base plate is located on a platform of the rack, the head of the rail base plate is in a step shape and is suspended at the left end of the rack, a counting rail is installed on the rail base plate, a ball control valve device is installed on the upper portion of the counting rail, and a control cabinet is located at the bottom of the rack. The head of the rail base plate is further provided with an auxiliary packing device in a jointed mode. The steel ball counting machine is compact and reasonable in structure and convenient to operate, and large-batched accurate counting and weighing of multiple types of steel balls are achieved under the cooperation of the feeding device, the counting rail, the ball control valve device and the auxiliary packing device. The surface quality defect caused by mutual collision of the steel balls in the movement process is effectively overcome, and therefore the surface quality of the steel balls is ensured. The steel balls are automatically packed with high efficiency, high precision and high reliability.
Description
Technical field
The present invention relates to steel ball and check packing technique field, especially a kind of steel ball counting machine based on intelligent sensing technology.
Background technology
Steel ball mainly comprises abrasion-proof steel ball and bearing steel ball, is to pulverize industry and the industry-wide a kind of product of precision bearing.But, present enterprise the checking of steel ball, to export and in the work such as packaging, also mainly at present rely on a large amount of manpower to realize, all lower on packaging quality, accuracy of detection, detection efficiency.
In prior art, steel ball is checked technology and is mainly comprised steel ball weight method, steel ball baffle plate fixed length scale of notation and the steel ball intelligence Auto-counting method of taking a picture based on industry.And the equal effect of above method is undesirable, as weight method needs to expend more manpower, running speed is slow, and the anti-corrosion oil of steel ball oiling rear surface and a small amount of impurity effect virtual package quantity, there is comparatively big error; Baffle plate fixed length scale of notation needs to screen steel ball size, causes counting efficiency to reduce; Industry photograph scale of notation is taken pictures to static steel ball scene and is identified that bright spot realizes counting, and by the impact of ambient light and anti-corrosion oil, the method is occurrence count inaccuracy phenomenon usually; Need repeatedly tip-in in a packaging process, greatly reduce efficiency; And adopt this contrive equipment with high costs, thus limit the promotion and application of itself.
Summary of the invention
The applicant, for the shortcoming in above-mentioned existing production technology, provides a kind of steel ball counting machine, thus solves the function of checking fast and neatly encapsulating that is in enormous quantities, polytypic steel ball, has the advantage of high precision, high efficiency and high reliability.
The technical solution adopted in the present invention is as follows:
A kind of steel ball counting machine, comprise frame, the right-hand member of described frame is provided with pay-off, be connected with pay-off and be provided with track substrate, described track substrate is positioned on the platform of frame, the head stepped cross of described track substrate, and be suspended on the left end of frame, described track substrate is provided with counting track, valve-control spherical door gear is installed on the top of described counting track, and the bottom being positioned at frame is provided with control housing; The head of described track substrate is also connected and is provided with auxiliary package device.
Its further technical scheme is:
Tilt between the platform of described frame and horizontal surface, the height of right-hand member is higher than the height of left end, and its angle of inclination is 5 °;
The structure of described pay-off is: described frame is arranged at intervals with rectangular frame, described rectangular frame is provided with static housing, the madial wall of described static housing is connected with mobile tank tower, the left and right sides wall of the static housing on described mobile tank tower top is separately installed with the first mistake ball track plates and second and crosses ball track plates, described first is provided with square shaft between ball track plates and the second mistake ball track plates excessively, on described square shaft, interval is provided with multiple floor, described floor is fixed with semicircle gate, the two ends of described square shaft are supported by permanent seat installs, one end of described square shaft is arranged in permanent seat by axle sleeve empty set, the other end of described square shaft is stretched out permanent seat and is connected with motor by elastic coupling, be positioned at the second mistake ball track plates bottom, and alternate interlocking be fixed with multiple 3rd mistake ball track plates between static housing sidewall and mobile tank tower,
Described first mistake ball track plates, second is crossed ball track plates and the 3rd and is excessively provided with flanging in ball track plates one end, described flanging place is fixed by fastener and static housing sidewall or mobile tank tower, described first mistake ball track plates and second is crossed ball track plates and is adopted 90 ° of flangings, and the described 3rd crosses ball track plates adopts 95 ° of flangings;
The structure of described counting track is: be positioned at the distributing damper that parallel interval on track substrate is provided with multiple v-shaped structure, the front end of each distributing damper is all provided with regulating block, steel ball passage is formed between adjacent two distributing dampers, same formation steel ball passage between adjacent two regulating blocks, two steel ball channel connections; The track substrate being positioned at steel ball channel middle has sensor loop hole, described sensor loop hole is through hole, the circle of described sensor loop hole departs from steel ball passage width 1/4th, and the diameter of described sensor loop hole is 1/3rd of steel ball passage width;
Described regulating block has knock hole;
The both sides of described track substrate have fixed orifice;
The structure of described valve-control spherical door gear is: comprise pillar, the top braces of described pillar is provided with upper frame, the two ends of described upper frame are provided with guide rod respectively by retracing spring, mounting block goal, described guide rod bottom, the structure of described door of blocking is: comprise door-plate, the two ends of described door-plate are respectively arranged with the sleeve be connected with guide rod, and the bottom interval of described door-plate is extended with multiple pole, and described club head is all extended with card pin; Be positioned at upper frame and alternating-current direct motor magnet is installed;
A void region, bottom of blocking is provided with bracing frame, and support frame as described above head clearance is provided with the parallel sensor receiving end support of polylith; Be positioned at the lower end of bracing frame, correspondingly with it be provided with sensor emission end support, the sensor that described sensor receiving end support and sensor emission end support are installed in correspondence with each other;
The structure of described auxiliary package device is: stepping motor, the mouth of described stepping motor is provided with rotating shaft by speed reduction gearing, the two ends of described rotating shaft support respectively by bearing seat and are arranged on bearing, described rotating shaft was provided with ball passage, described ball passage of crossing becomes sector structure, and extends square structure in the bottom of sector structure.
Beneficial effect of the present invention is as follows:
Compact conformation of the present invention, rationally, easy to operate, by the mating reaction of pay-off, counting track, valve-control spherical door gear and auxiliary package device, achieve polytypic steel ball accurately check counting in enormous quantities, meter weighs.Effectively prevent steel ball because mutually colliding the surface quality defect produced in motion process, thus ensure that steel ball surface quality.Complete the automatic packaging of steel ball high efficiency, high precision, high-reliability.
The present invention is mainly used in enormous quantities, the checking fast and neatly encapsulate of polytypic steel ball, can effectively solve steel ball check produce in counting packaging process jump-ball, lose and the problem such as steel ball surface quality defect.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is front view of the present invention.
Fig. 3 is the birds-eye view of Fig. 2.
Fig. 4 is the full sectional view along A-A cross section in Fig. 3.
Fig. 5 is the exploded view of pay-off of the present invention.
Fig. 6 is the structural representation of pay-off of the present invention.
Fig. 7 is the structural representation of valve-control spherical door gear of the present invention and counting track.
Fig. 8 is the front view of valve-control spherical door gear of the present invention.
Fig. 9 is the birds-eye view that the present invention counts track.
Figure 10 is that the present invention blocks the structural representation of door.
Figure 11 is the front view of auxiliary package device of the present invention.
Wherein: 1, frame; 2, pay-off; 3, track is counted; 4, valve-control spherical door gear; 5, track substrate; 6, auxiliary package device; 7, control housing; 8, static housing; 9, first ball track plates is crossed; 10, semicircle gate; 11, permanent seat; 12, axle sleeve; 13, second ball track plates is crossed; 14, mobile tank tower; 15, the 3rd ball track plates is crossed; 16, rectangular frame; 17, square shaft; 18, floor; 19, pillar; 20, to block door; 2001, sleeve; 2002, door-plate; 2003, pole; 2004, card pin; 21, sensor receiving end support; 22, bracing frame; 23, regulating block; 24, distributing damper; 25, upper frame; 26, guide rod; 27, retracing spring; 28, sensor emission end support; 29, alternating-current direct motor magnet; 30, knock hole; 31, fixed orifice; 32, sensor loop hole; 33, ball passage is crossed; 34, rotating shaft; 35, bearing; 36, stepping motor; 37, bearing seat.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the steel ball counting machine of the present embodiment, comprise frame 1, the right-hand member of frame 1 is provided with pay-off 2, is connected is provided with track substrate 5 with pay-off 2, track substrate 5 is positioned on the platform of frame 1, the head stepped cross of track substrate 5, and be suspended on the left end of frame 1, track substrate 5 is provided with counting track 3, valve-control spherical door gear 4 is installed on the top of counting track 3, and the bottom being positioned at frame 1 is provided with control housing 7; The head of track substrate 5 is also connected and is provided with auxiliary package device 6.
The intermittent feeding of pay-off 2, pay-off 2 can control conveying quantity and the speed of steel ball simultaneously.
Counting track 3 design, can realize to different model steel ball counting adjustment and dredge.
The design of valve-control spherical door gear 4, realizes precisely counting ball-handling.
The design of auxiliary package device 6, effectively avoids steel ball bounce to be convenient for changing packaging bag simultaneously.
As shown in Figure 2, tilt between the platform of frame 1 and horizontal surface, the height of right-hand member is higher than the height of left end, and its angle of inclination is 5 °.In Steel ball conveyor process, its deadweight can be leaned on to be moved.
As shown in Figure 5 and Figure 6, the structure of pay-off 2 is: frame 1 is arranged at intervals with rectangular frame 16, rectangular frame 16 is provided with static housing 8, the madial wall of static housing 8 is connected with mobile tank tower 14, the left and right sides wall of the static housing 8 on mobile tank tower 14 top is separately installed with the first mistake ball track plates 9 and second and crosses ball track plates 13, first is provided with square shaft 17 between ball track plates 9 and the second mistake ball track plates 13 excessively, on square shaft 17, interval is provided with multiple floor 18, floor 18 is fixed with semicircle gate 10, the two ends of square shaft 17 are supported by permanent seat 11 installs, one end of square shaft 17 is arranged in permanent seat 11 by axle sleeve 12 empty set, the other end of square shaft 17 is stretched out permanent seat 11 and is connected with motor by elastic coupling, be positioned at the second mistake ball track plates 13 bottom, and alternate interlocking be fixed with multiple 3rd mistake ball track plates 15 between static housing 8 sidewall and mobile tank tower 14.
First mistake ball track plates 9, second crosses ball track plates 13 and the 3rd mistake ball track plates 15 one end is provided with flanging, flanging place is fixed by fastener and static housing 8 sidewall or mobile tank tower 14, first crosses ball track plates 9 and second crosses ball track plates 13 and adopts 90 ° of flangings, and the 3rd crosses ball track plates 15 adopts 95 ° of flangings.
As shown in figures 7 and 9, the structure of counting track 3 is: be positioned at the distributing damper 24 that parallel interval on track substrate 5 is provided with multiple v-shaped structure, the front end of each distributing damper 24 is all provided with regulating block 23, steel ball passage is formed between adjacent two distributing dampers 24, same formation steel ball passage between adjacent two regulating blocks 23, two steel ball channel connections; The track substrate 5 being positioned at steel ball channel middle has sensor loop hole 32, sensor loop hole 32 is through hole, the circle of sensor loop hole 32 departs from steel ball passage width 1/4th, and the diameter of sensor loop hole 32 is 1/3rd of steel ball passage width.
Regulating block 23 has knock hole 30.
The both sides of track substrate 5 have fixed orifice 31.Be used for sensor installation transmitting terminal support 28.
As shown in Figure 7 and Figure 8, the structure of valve-control spherical door gear 4 is: comprise pillar 19, the top braces of pillar 19 is provided with upper frame 25, the two ends of upper frame 25 are provided with guide rod 26 respectively by retracing spring 27, mounting block goal, guide rod 26 bottom 20, as shown in Figure 10, the structure of door 20 of blocking is: comprise door-plate 2002, the two ends of door-plate 2002 are respectively arranged with the sleeve 2001 be connected with guide rod 26, the bottom interval of door-plate 2002 is extended with multiple pole 2003, and pole 2003 head is all extended with card pin 2004; Be positioned at upper frame 25 and alternating-current direct motor magnet 29 is installed.
Void region, door 20 bottom of blocking is provided with bracing frame 22, and bracing frame 22 head clearance is provided with the parallel sensor receiving end support 21 of polylith; Be positioned at the lower end of bracing frame 22, correspondingly with it be provided with sensor emission end support 28, the sensor that sensor receiving end support 21 and sensor emission end support 28 are installed in correspondence with each other.
As shown in figure 11, the structure of auxiliary package device 6 is: stepping motor 36, the mouth of stepping motor 36 is provided with rotating shaft 34 by speed reduction gearing (as tape handler), the two ends of rotating shaft 34 support respectively by bearing seat 37 and are arranged on bearing 35, rotating shaft 34 was provided with ball passage 33, cross ball passage 33 one-tenth sector structures, and extend square structure in the bottom of sector structure.
As shown in figures 7 and 9, regulating block 23 of the present invention and each seven of distributing damper 24, thus be formed with eight steel ball passages.
Principle of work of the present invention is: steel ball is undertaken storing by pay-off and carries, after semicircle gate 10 turns over 90 °, the delivery area that steel ball is made up of the storage area injection plate of top, the final counting track 3 that enters gently starts to carry out counting and checks work, steel ball is after distributing damper 24 completes shunting, enter the fixed width formed by regulating block 23 and cross ball groove (i.e. steel ball passage), when sensor loop hole 32 above track substrate 5, responded to by opto-electronic pickup, start the accurate counting carrying out each track, after number reaches preset value, MCU system received signal is by alternating-current direct motor magnet 29 power-off, fall rapidly at retracing spring 27 and Action of Gravity Field lower block goal 20.The semicircle gate 10 of feed bin is closed and is stopped release, preset ball after 3 seconds and all will enter into packaging bag by the ball passage 33 of crossing in auxiliary package device 6, now stepping motor 36 left-hand revolution 36 °, the sack wrapped is taken out, stepping motor 36 cw playback after 3 seconds, MCU system received signal makes alternating-current direct motor magnet 29 be energized simultaneously, and door 20 of blocking is opened, start for ball, second takes turns packaging starts.
Steel ball is checked in counting specific experiment, take diameter as 8mm steel ball is example, counting efficiency 5000 per minutes, undetected quantity 2, broken quantity 0.
More than describing is explanation of the invention, and be not the restriction to invention, limited range of the present invention, see claim, within protection scope of the present invention, can do any type of amendment.
Claims (10)
1. a steel ball counting machine, it is characterized in that: comprise frame (1), the right-hand member of described frame (1) is provided with pay-off (2), be connected with pay-off (2) and track substrate (5) is installed, described track substrate (5) is positioned on the platform of frame (1), the head stepped cross of described track substrate (5), and be suspended on the left end of frame (1), described track substrate (5) is provided with counting track (3), valve-control spherical door gear (4) is installed on the top of described counting track (3), and the bottom being positioned at frame (1) is provided with control housing (7); The head of described track substrate (5) is also connected and is provided with auxiliary package device (6).
2. a kind of steel ball counting machine as claimed in claim 1, is characterized in that: tilt between the platform of described frame (1) and horizontal surface, and the height of right-hand member is higher than the height of left end, and its angle of inclination is 5 °.
3. a kind of steel ball counting machine as claimed in claim 1, it is characterized in that: the structure of described pay-off (2) is: described frame (1) is arranged at intervals with rectangular frame (16), described rectangular frame (16) is provided with static housing (8), the madial wall of described static housing (8) is connected with mobile tank tower (14), the left and right sides wall of the static housing (8) on described mobile tank tower (14) top is separately installed with the first mistake ball track plates (9) and second and crosses ball track plates (13), described first is provided with square shaft (17) between ball track plates (9) and the second mistake ball track plates (13) excessively, the upper interval of described square shaft (17) is provided with multiple floor (18), described floor (18) is fixed with semicircle gate (10), the two ends of described square shaft (17) are supported by permanent seat (11) installs, one end of described square shaft (17) is arranged in permanent seat (11) by axle sleeve (12) empty set, the other end of described square shaft (17) is stretched out permanent seat (11) and is connected with motor by elastic coupling, be positioned at the second mistake ball track plates (13) bottom, and alternate interlocking be fixed with multiple 3rd mistake ball track plates (15) between static housing (8) sidewall and mobile tank tower (14).
4. a kind of steel ball counting machine as claimed in claim 3, it is characterized in that: described first mistake ball track plates (9), second is crossed ball track plates (13) and the 3rd and is excessively provided with flanging in ball track plates (15) one end, described flanging place is fixed by fastener and static housing (8) sidewall or mobile tank tower (14), described first crosses ball track plates (9) and second crosses ball track plates (13) employing 90 ° of flangings, and the described 3rd crosses ball track plates (15) adopts 95 ° of flangings.
5. a kind of steel ball counting machine as claimed in claim 1, it is characterized in that: the structure of described counting track (3) is: be positioned at the distributing damper (24) that the upper parallel interval of track substrate (5) is provided with multiple v-shaped structure, the front end of each distributing damper (24) is all provided with regulating block (23), steel ball passage is formed between adjacent two distributing dampers (24), same formation steel ball passage between adjacent two regulating blocks (23), two steel ball channel connections; The track substrate (5) being positioned at steel ball channel middle has sensor loop hole (32), described sensor loop hole (32) is through hole, the circle of described sensor loop hole (32) departs from steel ball passage width 1/4th, and the diameter of described sensor loop hole (32) is 1/3rd of steel ball passage width.
6. a kind of steel ball counting machine as claimed in claim 1, is characterized in that: described regulating block (23) has knock hole (30).
7. a kind of steel ball counting machine as claimed in claim 1, is characterized in that: the both sides of described track substrate (5) have fixed orifice (31).
8. a kind of steel ball counting machine as claimed in claim 1, it is characterized in that: the structure of described valve-control spherical door gear (4) is: comprise pillar (19), the top braces of described pillar (19) is provided with upper frame (25), the two ends of described upper frame (25) are provided with guide rod (26) respectively by retracing spring (27), mounting block goal, described guide rod (26) bottom (20), the structure of described door of blocking (20) is: comprise door-plate (2002), the two ends of described door-plate (2002) are respectively arranged with the sleeve (2001) be connected with guide rod (26), the bottom interval of described door-plate (2002) is extended with multiple pole (2003), described pole (2003) head is all extended with card pin (2004), be positioned at upper frame (25) and alternating-current direct motor magnet (29) is installed.
9. a kind of steel ball counting machine as claimed in claim 8, is characterized in that: door of blocking (20) void region, bottom is provided with bracing frame (22), and support frame as described above (22) head clearance is provided with the parallel sensor receiving end support (21) of polylith; Be positioned at the lower end of bracing frame (22), correspondingly with it be provided with sensor emission end support (28), the sensor that described sensor receiving end support (21) and sensor emission end support (28) are installed in correspondence with each other.
10. a kind of steel ball counting machine as claimed in claim 1, it is characterized in that: the structure of described auxiliary package device (6) is: stepping motor (36), the mouth of described stepping motor (36) is provided with rotating shaft (34) by speed reduction gearing, the two ends of described rotating shaft (34) support respectively by bearing seat (37) and are arranged on bearing (35), described rotating shaft (34) was provided with ball passage (33), described ball passage (33) of crossing becomes sector structure, and extends square structure in the bottom of sector structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510162570.5A CN104787401B (en) | 2015-04-08 | 2015-04-08 | Steel ball counting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510162570.5A CN104787401B (en) | 2015-04-08 | 2015-04-08 | Steel ball counting machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104787401A true CN104787401A (en) | 2015-07-22 |
| CN104787401B CN104787401B (en) | 2017-01-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510162570.5A Active CN104787401B (en) | 2015-04-08 | 2015-04-08 | Steel ball counting machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104787401B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106005978A (en) * | 2016-05-22 | 2016-10-12 | 俞勤 | Equipment for controlling quantity of steel balls |
| CN108557166A (en) * | 2018-01-08 | 2018-09-21 | 珠海市协骏玩具有限公司 | A kind of Bounce Out Blitz counting apparatus |
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| US4999977A (en) * | 1990-01-29 | 1991-03-19 | Briscoe Jack R | Automatic bag filler |
| US5463839A (en) * | 1994-08-04 | 1995-11-07 | The Lakso Company | Apparatus for packaging a predetermined quantity of objects and a counting device therefor |
| CN203294393U (en) * | 2013-06-25 | 2013-11-20 | 湖北夜明珠钢球轴承制造有限公司 | Packing machine capable of counting steel balls |
| CN104085567A (en) * | 2014-07-23 | 2014-10-08 | 天津尚永科技有限公司 | Packaging bag automatic counting and encasement device |
| CN104260944A (en) * | 2014-08-11 | 2015-01-07 | 深圳市联星服装辅料有限公司 | Photoelectric button counting machine |
| CN204223306U (en) * | 2014-11-05 | 2015-03-25 | 无锡市永动电子科技有限公司 | The counter block of steel ball automatic packaging system |
| CN204642305U (en) * | 2015-04-08 | 2015-09-16 | 江南大学 | A kind of steel ball counting machine |
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2015
- 2015-04-08 CN CN201510162570.5A patent/CN104787401B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4999977A (en) * | 1990-01-29 | 1991-03-19 | Briscoe Jack R | Automatic bag filler |
| US5463839A (en) * | 1994-08-04 | 1995-11-07 | The Lakso Company | Apparatus for packaging a predetermined quantity of objects and a counting device therefor |
| CN203294393U (en) * | 2013-06-25 | 2013-11-20 | 湖北夜明珠钢球轴承制造有限公司 | Packing machine capable of counting steel balls |
| CN104085567A (en) * | 2014-07-23 | 2014-10-08 | 天津尚永科技有限公司 | Packaging bag automatic counting and encasement device |
| CN104260944A (en) * | 2014-08-11 | 2015-01-07 | 深圳市联星服装辅料有限公司 | Photoelectric button counting machine |
| CN204223306U (en) * | 2014-11-05 | 2015-03-25 | 无锡市永动电子科技有限公司 | The counter block of steel ball automatic packaging system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106005978A (en) * | 2016-05-22 | 2016-10-12 | 俞勤 | Equipment for controlling quantity of steel balls |
| CN106005978B (en) * | 2016-05-22 | 2019-01-11 | 俞勤 | It is a kind of for controlling the equipment of steel ball number |
| CN108557166A (en) * | 2018-01-08 | 2018-09-21 | 珠海市协骏玩具有限公司 | A kind of Bounce Out Blitz counting apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104787401B (en) | 2017-01-25 |
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