CN107777219B - SMT automatic transmission method - Google Patents
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- CN107777219B CN107777219B CN201710935370.8A CN201710935370A CN107777219B CN 107777219 B CN107777219 B CN 107777219B CN 201710935370 A CN201710935370 A CN 201710935370A CN 107777219 B CN107777219 B CN 107777219B
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000005540 biological transmission Effects 0.000 title claims abstract description 14
- 238000012546 transfer Methods 0.000 claims description 10
- 230000003213 activating effect Effects 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 19
- 230000007547 defect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/22—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration comprising a series of co-operating units
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/52—Devices for transferring articles or materials between conveyors i.e. discharging or feeding devices
- B65G47/53—Devices for transferring articles or materials between conveyors i.e. discharging or feeding devices between conveyors which cross one another
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
- B65G2201/02—Articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
- B65G2203/02—Control or detection
- B65G2203/0266—Control or detection relating to the load carrier(s)
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Abstract
The invention discloses an SMT automatic transmission method, which comprises the steps of sequentially starting a first main conveyor belt connected with a reflow oven and a first auxiliary conveyor belt connected with the first main conveyor belt, and then sequentially starting the rest at least one first auxiliary conveyor belt according to a preset time interval; according to the method, at least one first auxiliary conveyor belt arranged behind one first auxiliary conveyor belt connected with the first main conveyor belt is started in sequence at set time intervals, so that products of different first auxiliary conveyor belts can be sequentially arranged on the first main conveyor belt when moving to the first main conveyor belt, the sequence of each product on the first main conveyor belt due to the fact that one first auxiliary conveyor belt breaks down is avoided, when the product transmitted to the first main conveyor belt by the following first auxiliary conveyor belt moves to the connecting position of the preceding first auxiliary conveyor belt and the first main conveyor belt, the product is prevented from colliding with the product transmitted to the first main conveyor belt by the preceding first auxiliary conveyor belt, and the continuity of a production line is guaranteed.
Description
Technical Field
The invention relates to the technical field of SMT production, in particular to an SMT automatic transmission method.
Background
SMT is a surface mounting technology (surface mount technology), is the most popular technology and process in the current electronic assembly industry, has the characteristics of high assembly density, small electronic product volume, light weight, good reliability and the like, can improve the production efficiency, and reduces the cost by 30-50%. With the development of electronic technology, electronic products are required to be miniaturized, through-hole plug-in components used in the traditional technology cannot be reduced, and especially, through-hole components are eliminated in large-scale and high-integration integrated circuits; with the increase of labor cost, manufacturers need to produce high-quality products with low cost and high yield to meet the demands of customers and enhance market competitiveness, and need to realize production automation and product batch, so that the SMT is widely applied to the field of electronic product production.
In the prior art, SMT adopts a production line configured with one reflow oven, that is, one chip mounter is connected with one reflow oven, and the cost for arranging one reflow oven in a workshop is very high at present, so that most manufacturers only configure one reflow oven, which results in low production efficiency of products and serious resource waste. In order to improve the production efficiency and improve the utilization rate of resources, chinese patent document CN202652729U discloses an energy-saving SMT production line, which adopts two chip mounters to convey products to a third conveyor belt through a first conveyor belt and a second conveyor belt respectively, and the tail end of the third conveyor belt is provided with a reflow oven, which has the defect that the transmission relationship among the first conveyor belt, the second conveyor belt and the third conveyor belt is not described, so that in the continuous production process, when the products conveyed on the third conveyor belt by the first conveyor belt move to the joint of the second conveyor belt and the third conveyor belt, the products conveyed on the third conveyor belt collide with the products conveyed on the second conveyor belt, which affects the normal conveying of the products on the third conveyor belt.
Disclosure of Invention
Therefore, the technical problem to be solved by the present invention is to overcome the defect that the production efficiency is affected by the possibility of mutual collision of the products transported on different sub-conveyors when the products are transported to the main conveyor in the prior art, so as to provide an SMT automatic transportation method with high production efficiency, which can enable the products to enter the reflow oven orderly and avoid mutual collision.
An SMT automatic transmission method comprises the following steps:
sequentially starting a first main conveyor belt connected with the reflow oven and a first auxiliary conveyor belt connected with the first main conveyor belt, and then sequentially starting at least one remaining first auxiliary conveyor belt according to a preset time interval;
wherein the predetermined time interval is a time period such that products transferred onto the first main conveyor belt on a subsequently activated first secondary conveyor belt do not collide with products transferred onto the first main conveyor belt on a previously activated first secondary conveyor belt; and the first secondary conveyor belt and the rest at least one first secondary conveyor belt are at least distributed at one side of the first main conveyor belt at intervals, and only one product is conveyed on the first secondary conveyor belt all the time.
Preferably, the conveying rates of the first main conveyor belt and the first auxiliary conveyor belt are the same, the ratio of the distance between the joints of the two adjacent first auxiliary conveyor belts and the first main conveyor belt to the length of the first auxiliary conveyor belt is a non-integer ratio, and the predetermined time interval is smaller than the conveying time of the products on the first auxiliary conveyor belt.
Preferably, the first auxiliary conveyor belt and the remaining at least one first auxiliary conveyor belt are both distributed on the same side of the first main conveyor belt, the first auxiliary conveyor belt started first is arranged close to the reflow oven, and the remaining at least one first auxiliary conveyor belt is sequentially distributed at intervals in the direction away from the reflow oven.
Preferably, a first sensor for sensing that a product enters a predetermined distance from the first main conveyor belt is arranged at a joint of the first auxiliary conveyor belt and the first main conveyor belt, and a delay switch for receiving a signal sent by the first sensor to sequentially start the corresponding first auxiliary conveyor belts according to a predetermined time interval is arranged on at least one of the remaining first auxiliary conveyor belts.
Preferably, the method also comprises the steps of simultaneously and sequentially starting a second main conveyor belt connected with the reflow oven and a second auxiliary conveyor belt connected with the second main conveyor belt, and then sequentially starting the rest at least one second auxiliary conveyor belt according to a preset time interval; the second main conveying belt and the first main conveying belt are distributed in parallel, and the second auxiliary conveying belt and the first auxiliary conveying belt are respectively distributed on the non-close sides of the second main conveying belt and the first main conveying belt;
wherein the predetermined time interval is a time period such that products transferred onto the second main conveyor belt on a subsequently activated second sub-conveyor belt do not collide with products transferred onto the second main conveyor belt on a previously activated second sub-conveyor belt; and only one product is always being transported on the second secondary conveyor belt.
Preferably, the conveying speed of the second main conveying belt is the same as that of the second secondary conveying belt, the ratio of the distance between the joints of the two adjacent second secondary conveying belts and the second main conveying belt to the length of the second secondary conveying belt is a non-integer ratio, and the predetermined time interval is smaller than the conveying time of the product on the second secondary conveying belt.
Preferably, the first started second secondary conveyor belt is arranged close to the reflow oven, and the rest at least one second secondary conveyor belt is sequentially distributed at intervals in the direction far away from the reflow oven.
Preferably, a second sensor for sensing a product entering distance from the second main conveyor belt at a predetermined distance is arranged at the joint of the second secondary conveyor belt and the second main conveyor belt, and a delay switch for receiving a signal sent by the second sensor to sequentially start the corresponding second secondary conveyor belts according to a predetermined time interval is arranged on the remaining at least one second secondary conveyor belt.
Preferably, a plurality of first carrying tables and second carrying tables for fixing the products are respectively arranged on the first main conveyor belt and the second main conveyor belt at intervals.
Preferably, the cross-sectional areas of the first stage and the second stage are both larger than the area of the bottom surface of the product.
The technical scheme of the invention has the following advantages:
1. the SMT automatic transmission method provided by the invention comprises the steps that a first main conveyor belt connected with a reflow oven and a first auxiliary conveyor belt connected with the first main conveyor belt are sequentially started, and then at least one of the remaining first auxiliary conveyor belts is sequentially started according to a preset time interval; wherein the predetermined time interval is a time period such that products conveyed onto the first main conveyor belt on a subsequently activated first secondary conveyor belt do not collide with products conveyed onto the first main conveyor belt on a previously activated first secondary conveyor belt; the first auxiliary conveyor belt and the rest at least one first auxiliary conveyor belt are distributed at intervals at least on one side of the first main conveyor belt, and only one product is conveyed on the first auxiliary conveyor belt all the time; according to the method, the plurality of first auxiliary conveyor belts connected with the first main conveyor belt are sequentially started at set time intervals, so that products conveyed to different first auxiliary conveyor belts can be sequentially arranged on the first main conveyor belt at intervals when moving to the first main conveyor belt, the order of each product on the first main conveyor belt cannot be disturbed due to the fact that one first auxiliary conveyor belt breaks down, and meanwhile, the products transmitted to the first main conveyor belt by the following first auxiliary conveyor belt can be prevented from colliding with the products transmitted to the first main conveyor belt by the preceding first auxiliary conveyor belt when moving to the joint of the preceding first auxiliary conveyor belt and the first main conveyor belt, so that the transmission efficiency of the products on the first main conveyor belt is influenced, and the continuity of a production line is guaranteed.
2. According to the SMT automatic conveying method provided by the invention, the conveying speeds of the first main conveying belt and the first auxiliary conveying belt are the same, the ratio of the distance between the joints of the two adjacent first auxiliary conveying belts and the first main conveying belt to the length of the first auxiliary conveying belt is a non-integer ratio, and the preset time interval is smaller than the conveying time of the products on the first auxiliary conveying belts. Therefore, when the products transmitted to the first main conveying belt by the first auxiliary conveying belt behind move to the joint of the first auxiliary conveying belt and the first main conveying belt in front, the products cannot collide with the products which are close to the first main conveying belt and transmitted to the first main conveying belt by the first auxiliary conveying belt in front, and the products cannot collide with the products behind, so that the smooth proceeding of the whole transmission process is ensured.
3. The SMT automatic transmission method provided by the invention is characterized in that first sensors used for sensing that products enter a preset distance away from a first main conveyor belt are arranged at the joints of the first auxiliary conveyor belt and the first main conveyor belt, and meanwhile, a delay switch used for receiving a signal sent by the first sensors to sequentially start the corresponding first auxiliary conveyor belts according to a preset time interval is arranged on at least one of the remaining first auxiliary conveyor belts; the aforesaid sets up in order to realize the automatic start of production line, and can accurate control preset time interval, and then the time that the product on the different first secondary conveyer belt of control transmitted first main belt for the product that different first secondary conveyer belts transmitted first main belt can arrange in proper order at first main belt.
4. The SMT automatic transmission method further comprises the steps of simultaneously and sequentially starting a second main conveyor belt connected with the reflow oven and a second auxiliary conveyor belt connected with the second main conveyor belt, and then sequentially starting the rest at least one second auxiliary conveyor belt according to a preset time interval; and the second main conveyor belt and the first main conveyor belt are distributed in parallel, and the second auxiliary conveyor belt and the first auxiliary conveyor belt are respectively distributed on the non-close sides of the second main conveyor belt and the first main conveyor belt. The two main conveyor belts and the two sets of auxiliary conveyor belts carry out product conveying simultaneously, operate independently of each other and do not interfere with each other, and the product conveying efficiency is improved in an effective space.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a flow chart provided by the present invention;
description of the drawings: 1-reflow oven, 2-first main conveyor belt, 3-first auxiliary conveyor belt, 4-second main conveyor belt, 5-second auxiliary conveyor belt, and 6-chip mounter.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1, the SMT automated transfer method includes the following steps:
sequentially starting a first main conveyor belt 2 connected with a reflow oven 1 and a first auxiliary conveyor belt 3 connected with the first main conveyor belt 2, and then sequentially starting the rest first auxiliary conveyor belts 3 according to a preset time interval; wherein the predetermined time interval is a time period such that products transferred onto the first main conveyor 2 on the first sub conveyor 3 started later do not collide with products transferred onto the first main conveyor 2 on the first sub conveyor 3 started earlier; and the first secondary conveyor belt 3 and the remaining one of the first secondary conveyor belts 3 are distributed at intervals on the left side of the first main conveyor belt 2, and only one product is always conveyed on the first secondary conveyor belt 3.
The method is that two first auxiliary conveyor belts 3 connected with the first main conveyor belt 2 are started in sequence at set time intervals, so that the products of the two first sub-conveyors 3 can be arranged on the first main conveyor 2 in sequence when moving onto the first main conveyor 2, without disturbing the order of the products conveyed by the respective first sub-conveyors 3 on the first main conveyor 2 due to a failure of one of the first sub-conveyors 3, while also avoiding that products transferred to the first main conveyor 2 by the following first sub-conveyor 3 move to the connection of the preceding first sub-conveyor 3 with the first main conveyor 2, and the collision with the products transmitted to the first main conveyor belt 2 by the first auxiliary conveyor belt 3 is generated, so that the continuity of the production line is ensured.
In addition, the conveying speed of the first main conveyor belt 2 and the first auxiliary conveyor belt 3 is the same, the ratio of the distance between the joints of the two adjacent first auxiliary conveyor belts 3 and the first main conveyor belt 2 to the length of the first auxiliary conveyor belt 3 is a non-integer ratio, and the predetermined time interval is smaller than the conveying time of the products on the first auxiliary conveyor belt 3. The first main conveyor belt 2 and the first auxiliary conveyor belt 3 have the same conveying speed, so that an operator can conveniently set a preset time interval according to the distance between the joints of the two adjacent first auxiliary conveyor belts 3 and the first main conveyor belt 2; the ratio of the spacing between the joints of the two adjacent first secondary conveyor belts 3 and the first main conveyor belt 2 to the length of the first secondary conveyor belt 3 is a non-integer ratio, in order to avoid that under the condition that the conveying speed of the first main conveyor belt and the first secondary conveyor belt is the same, the time for the following products transmitted to the first main conveyor belt 2 by the first secondary conveyor belt 3 to move to the joints of the first main conveyor belt 2 and the first secondary conveyor belt 3 is exactly the same as the time for the following products except the first product conveyed on the first secondary conveyor belt 3 to move to the joints of the first main conveyor belt 2 and the first secondary conveyor belt 3; the predetermined time interval is less than the transit time of the products on the first secondary conveyor 3, which is designed for the efficiency of the line transfer and also to ensure that only one product is always transferred on the first secondary conveyor 3.
It should be noted that this is only a preferred solution of the present embodiment, and is a method which is found by the inventor according to actual operation and experience and is easier to realize the ordered transmission of the production line.
Further, the first auxiliary conveyor belt 3 and the remaining first auxiliary conveyor belt 3 are both distributed on the same side of the first main conveyor belt 2, the first auxiliary conveyor belt 3 which is started first is arranged close to the reflow oven 1, and the remaining first auxiliary conveyor belts 3 are distributed at intervals in the direction away from the reflow oven 1; it should be noted that this is only a preferable solution of this embodiment, and in other embodiments, the first auxiliary conveyor belt 3 and the remaining at least one first auxiliary conveyor belt 3 may be respectively distributed on both sides of the first main conveyor belt 2, and the first auxiliary conveyor belt 3 away from the reflow oven 1 is started first.
Further, a first sensor for sensing that a product enters a predetermined distance from the first main conveyor belt 2 is arranged at the joint of the first auxiliary conveyor belt 3 and the first main conveyor belt 2, and a delay switch for receiving a signal sent by the first sensor to start the corresponding first auxiliary conveyor belt 3 according to a predetermined time interval is arranged on the remaining first auxiliary conveyor belt 3; the above arrangement is to realize the automatic start of the production line, and can accurately control the preset time interval, and then control the different time for the products on the first auxiliary conveyor belt 3 to be transmitted to the first main conveyor belt 2, so that the different time for the products transmitted by the first auxiliary conveyor belt 3 to the first main conveyor belt 2 can be arranged in sequence on the first main conveyor belt 2.
Further, a second main conveyor belt 4 connected with the reflow oven 1 and a second auxiliary conveyor belt 5 connected with the second main conveyor belt 4 are sequentially started at the same time, and then the rest second auxiliary conveyor belts 5 are sequentially started according to a preset time interval; the second main conveyor belt 4 is distributed in parallel with the first main conveyor belt 2, and the second auxiliary conveyor belt 5 and the first auxiliary conveyor belt 3 are respectively distributed on the non-adjacent sides of the second main conveyor belt 4 and the first main conveyor belt 2; wherein the predetermined time interval is a time period such that products transferred onto the second main conveyor belt 4 on the second sub-conveyor belt 5 activated later do not collide with products transferred onto the second main conveyor belt 4 on the second sub-conveyor belt 5 activated earlier; and only one product is always being transported on said second secondary conveyor 5. The design is that two conveyor belts can be arranged in the reflow oven 1, in order to fully utilize the operation space at the side of the reflow oven 1 and improve the production efficiency, the second main conveyor belt 4 connected with the first main conveyor belt 2 in parallel is arranged on the production line, and of course, when only one production line is needed, the second main conveyor belt 4 is closed.
Further, the conveying speed of the second main conveyor belt 4 and the second auxiliary conveyor belt 5 are the same, the ratio of the distance between the joints of the two adjacent second auxiliary conveyor belts 5 and the second main conveyor belt 4 to the length of the second auxiliary conveyor belt 5 is a non-integer ratio, and the predetermined time interval is smaller than the conveying time of the product on the second auxiliary conveyor belt 5.
Further, the second auxiliary conveyor belt 5 started firstly is close to the reflow oven 1, and the rest second auxiliary conveyor belt 5 is sequentially distributed at intervals in the direction away from the reflow oven 1.
Further, a second sensor used for sensing the entering distance of the product is arranged at the joint of the second secondary conveyor belt 5 and the second main conveyor belt 4, and a delay switch used for receiving a signal sent by the second sensor to sequentially start the corresponding second secondary conveyor belts 5 according to a preset time interval is arranged on the remaining second secondary conveyor belt 5.
Further, a plurality of first carrying tables and second carrying tables for fixing the products are respectively arranged on the first main conveyor belt 2 and the second main conveyor belt 4 at intervals; this configuration is intended to limit the placement of the products on the first main conveyor 2 and on the second main conveyor 4, preventing the products from moving during transport due to inevitable oscillating positions.
Further, the cross sectional areas of the first carrying platform and the second carrying platform are both larger than the bottom surface area of the product; the structure is used for providing a certain buffer space for the product, so that the product can accurately enter the first carrier and the second carrier.
One specific implementation of the SMT automated transmission method is as follows:
the automatic product conveying device comprises a reflow oven 1 and four chip mounters 6, wherein the four chip mounters 6 are respectively connected with a main conveying belt through an auxiliary conveying belt, so that products are conveyed into the reflow oven 1. The first auxiliary conveyor belt 3 and the second auxiliary conveyor belt 5 are two and are distributed at two sides of the first main conveyor belt 2 and the second main conveyor belt 4 in a dispersion shape. The length of the product is 0.3m, the lengths of the first main conveyor belt 2 and the second main conveyor belt 4 are both 5m, the lengths of the first auxiliary conveyor belt 3 and the second auxiliary conveyor belt 5 are both 2.5m, the distance between the joints of the first auxiliary conveyor belt 3 and the first main conveyor belt 2 is 1.5m, the distance between the joints of the second auxiliary conveyor belt 5 and the second main conveyor belt 4 is 1.5m, the conveying speeds of the first main conveyor belt 2, the first auxiliary conveyor belt 3, the second main conveyor belt 4 and the second auxiliary conveyor belt 5 are all 0.9m/min, the preset time interval is 140s, the preset distance is 0.4m, and the lengths of the first carrier and the second carrier are both 0.35 m.
Firstly, simultaneously starting the first main conveyor belt 2 and the first auxiliary conveyor belt 3 and the corresponding chip mounter 6 which are close to the reflow oven 1, and the second main conveyor belt 4 and the second auxiliary conveyor belt 5 and the corresponding chip mounter 6 which are close to the reflow oven 1, directly placing products pasted by the chip mounter 6 on the first auxiliary conveyor belt 3 and the second auxiliary conveyor belt 5, sensing the products by a first sensor and a second sensor which are arranged at the positions when the products of the first auxiliary conveyor belt 3 move to a position 0.4m away from the connection position of the first main conveyor belt and the products of the second auxiliary conveyor belt 5 move to a position 0.4m away from the connection position of the second main conveyor belt 4, feeding sensing signals back to a system by the first sensor and the second sensor, and commanding a delay switch which is arranged on the first auxiliary conveyor belt and the second auxiliary conveyor belt 5 which are far away from the reflow oven 1 to start, the system starts the first auxiliary conveyor belt 3 and the second auxiliary conveyor belt 5 far away from the reflow oven 1, products on the first auxiliary conveyor belt 3 and the second auxiliary conveyor belt 5 are conveyed to the first main conveyor belt 2 and the second main conveyor belt 4 at the speed of 0.9m/min, and after passing through the joint of the first auxiliary conveyor belt 3 and the first main conveyor belt 2 close to the reflow oven 1 and the joint of the second auxiliary conveyor belt 5 and the second main conveyor belt 4, the products which are conveyed to the first main conveyor belt 2 by the first auxiliary conveyor belt 3 close to the reflow oven 1 and the products which are conveyed to the second main conveyor belt 4 by the second auxiliary conveyor belt 5 enter the reflow oven 1 in a spaced arrangement. Since the first main conveyor 2 and the second main conveyor each operate independently, the product transport on the first sub conveyor 3 and the second sub conveyor 5 does not affect each other but is carried out in order.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. An SMT automatic transmission method is characterized by comprising the following steps:
sequentially starting a first main conveyor belt (2) connected with a reflow oven (1) and a first auxiliary conveyor belt (3) connected with the first main conveyor belt (2), and then sequentially starting the rest at least one first auxiliary conveyor belt (3) according to a preset time interval;
wherein the predetermined time interval is a time period such that products transferred onto the first main conveyor (2) on the first sub-conveyor (3) started later do not collide with products transferred onto the first main conveyor (2) on the first sub-conveyor (3) started earlier; and the first auxiliary conveyor belt (3) and the rest at least one first auxiliary conveyor belt (3) are at least distributed at intervals on one side of the first main conveyor belt (2), and only one product is conveyed on the first auxiliary conveyor belt (3) all the time.
2. An SMT automated conveying method according to claim 1, wherein conveying rates of the first main conveyor belt (2) and the first secondary conveyor belt (3) are the same, and a ratio of a spacing between junctions of two adjacent first secondary conveyor belts (3) and the first main conveyor belt (2) to a length of the first secondary conveyor belt (3) is a non-integer ratio, and wherein the predetermined time interval is less than a conveying time of the product on the first secondary conveyor belt (3).
3. An SMT automated conveying method according to claim 2, wherein the first secondary conveyor belt (3) and the remaining at least one first secondary conveyor belt (3) are distributed on the same side of the first main conveyor belt (2), and the first secondary conveyor belt (3) that is activated first is arranged close to the reflow oven (1), and the remaining at least one first secondary conveyor belt (3) is sequentially spaced apart in a direction away from the reflow oven (1).
4. An SMT automatic conveying method according to claim 3, wherein a first sensor for sensing product entry at a predetermined distance from the first main conveyor belt (2) is provided at each of the junctions of the first sub conveyor belt (3) and the first main conveyor belt (2), and wherein a delay switch for receiving a signal from the first sensor to sequentially activate the respective first sub conveyor belts (3) at predetermined time intervals is provided at the remaining at least one first sub conveyor belt (3).
5. An SMT automated transfer method according to claim 3 or 4, further comprising sequentially activating a second main conveyor belt (4) connected to the reflow oven (1) and a second sub conveyor belt (5) connected to the second main conveyor belt (4) simultaneously, and then sequentially activating the remaining at least one second sub conveyor belt (5) at predetermined time intervals; the second main conveying belt (4) and the first main conveying belt (2) are distributed in parallel, and the second auxiliary conveying belt (5) and the first auxiliary conveying belt (3) are respectively distributed on the non-close sides of the second main conveying belt (4) and the first main conveying belt (2);
wherein the predetermined time interval is a time period such that products transferred onto the second main conveyor belt (4) on the second secondary conveyor belt (5) that is activated later do not collide with products transferred onto the second main conveyor belt (4) on the second secondary conveyor belt (5) that is activated earlier; and only one product is always conveyed on the second pair of conveyor belts (5).
6. An SMT automated transfer method according to claim 5, wherein the transfer rates of the second main conveyor belt (4) and the second sub conveyor belt (5) are the same, and wherein the ratio of the spacing between the junctions of two adjacent second sub conveyor belts (5) and the second main conveyor belt (4) to the length of the second sub conveyor belt (5) is a non-integer ratio, the predetermined time interval being less than the transfer time of the products on the second sub conveyor belt (5).
7. An SMT automated transfer method according to claim 6, wherein the second sub-conveyor (5) that is activated first is arranged adjacent to the reflow oven (1), and the remaining at least one second sub-conveyor (5) is sequentially spaced apart in a direction away from the reflow oven (1).
8. An SMT automated transfer method according to claim 7, wherein a second sensor for sensing product entry at a predetermined distance from the second main conveyor belt (4) is provided at each of the junctions of the second sub-conveyor belt (5) and the second main conveyor belt (4), and wherein a delay switch for receiving a signal from the second sensor to sequentially activate the respective second sub-conveyor belts (5) at predetermined time intervals is provided at the remaining at least one second sub-conveyor belt (5).
9. An SMT automated transfer method according to any of claims 6-8, wherein a number of first and second stages for securing the products are spaced apart on the first and second main conveyor belts (2, 4), respectively.
10. An SMT automated transfer method according to claim 9, wherein the first and second stages each have a cross-sectional area that is greater than a bottom surface area of the product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710935370.8A CN107777219B (en) | 2017-10-10 | 2017-10-10 | SMT automatic transmission method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710935370.8A CN107777219B (en) | 2017-10-10 | 2017-10-10 | SMT automatic transmission method |
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| CN107777219B true CN107777219B (en) | 2020-01-14 |
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| CN1369419A (en) * | 2001-02-02 | 2002-09-18 | 株式会社戴福库 | Cocurrent control method for goods |
| CN201116230Y (en) * | 2007-11-01 | 2008-09-17 | 吴江粮食机械有限公司 | Controller for preventing packages from folding |
| CN201442665U (en) * | 2009-06-15 | 2010-04-28 | 山东鲁西化工股份有限公司东阿第八化肥厂 | Auto-control anti-overlapping device for packing bags |
| CN201721960U (en) * | 2010-02-03 | 2011-01-26 | 深圳市牧特电子设备有限公司 | Two-line-in-one production device |
| CN102118957A (en) * | 2009-12-30 | 2011-07-06 | 比亚迪股份有限公司 | Collinear production method for printed circuit board and SMT production line |
| CN105293045A (en) * | 2015-08-14 | 2016-02-03 | 江苏力维物流机械有限公司 | Automatic converging packaging sorting system and use method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1369419A (en) * | 2001-02-02 | 2002-09-18 | 株式会社戴福库 | Cocurrent control method for goods |
| CN201116230Y (en) * | 2007-11-01 | 2008-09-17 | 吴江粮食机械有限公司 | Controller for preventing packages from folding |
| CN201442665U (en) * | 2009-06-15 | 2010-04-28 | 山东鲁西化工股份有限公司东阿第八化肥厂 | Auto-control anti-overlapping device for packing bags |
| CN102118957A (en) * | 2009-12-30 | 2011-07-06 | 比亚迪股份有限公司 | Collinear production method for printed circuit board and SMT production line |
| CN201721960U (en) * | 2010-02-03 | 2011-01-26 | 深圳市牧特电子设备有限公司 | Two-line-in-one production device |
| CN105293045A (en) * | 2015-08-14 | 2016-02-03 | 江苏力维物流机械有限公司 | Automatic converging packaging sorting system and use method thereof |
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| CN107777219A (en) | 2018-03-09 |
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