TW379520B - Detaching apparatus and detaching method for components of printed circuit boards - Google Patents

Abstract

A detaching apparatus including a detaching unit that applies a shear force to the components which is in parallel with the mounting face of components, particularly the detaching unit having a pair of rotary cylinders mutually parallel each other and a predetermined space formed in between the rotary cylinders. The components can be effectively detached by applying the shear force to the components when the printed circuit board inserted with components is led into the space in between the rotary cylinders.

Description

Printed by the Consumer Co-operation of the Central Bureau of Standards of the Ministry of Economic Affairs. 5. Description of the Invention (i) The piece is clearly related to a device for separating parts from a printed circuit board on which the parts are installed and a method for separating the parts. Let's generally say that there are many suggestions for the purely mounted printed electrical separation parts. The printed circuit board with the following wire parts will be used as-parts mounting and circuit board. The above-mentioned separation methods include a method of manually removing zero, square / remove α with a tool such as a wooden hammer or a steel wire pliers (及 ing pli㈣), and manually separating the V pieces by using a tweezer ⑽eezer after melting the solder. Furthermore, it is disclosed in Japanese Patent Laid-Open Publication No. 59_2143 (the following 7 is an attachment to F) _ utilization-a method in which a special device separates only a specific part. These methods are mainly related to the replacement of good parts with a normal part, which is nicknamed as a part repair method in the quality management process of a part mounted printed circuit board. To mount a printed circuit board for recycling parts, separate the parts from the printed circuit board 'and recycle them separately. This allows the part to be used as a source of gold and silver for refining, because parts usually include gold or silver. On the other hand, printed circuit boards can also be used as copper resources because printed circuit boards usually include copper. Generally, the component mounting printed circuit board itself contains valuable metals such as gold, silver, and steel with low contents. Because refining prices became higher than discarded prices, most part-mounted printed circuit boards were discarded. On the other hand, if the parts can be effectively separated from the printed circuit board at a low price, the composition of these metals can be enhanced. As a result, the printed circuit board of the part Agen can be valuable as a source of refining because the refining price is reduced. It is therefore important to separate the part from the printed circuit board in order to mount the printed board for recycling. However, in the above manual separation method and conventional attachments, paper size + national standard (CMS) A4i ^ " (210X297 mm) (Please read the precautions on the back before filling this page}

A7 A7 Five Inventions (~~ ----- I It is impossible to efficiently separate all the parts in the same time. The other parts are only separated from the printed circuit board-specific parts are "It is difficult to read different printed installations on the same day Separate all parts from the board. Separating heated parts from printed circuit boards to melt the solder: Another proposal for the cattle method has been proposed. However, this method requires a large one-inch heating furnace. Therefore, the manufacturing price is bound to increase.褒 Another suggestion for a method for a printed circuit board to recover the above-mentioned metal has been proposed. However, it is difficult to effectively recover Jinshu because the metal diffuses into the pulverized material. As described in the above-mentioned conventional method, it is difficult to have Separate parts efficiently from parts = P brushed circuit boards, and install printed circuits with parts at the same time ~ The purpose of the present invention is to provide a method for separating printed parts from printed parts that can be installed at a low cost and efficiently. According to the invention, the separation device includes a separation unit to apply a shear force to the part in a direction parallel to the mounting surface of the part. In particular, the separation unit has Rotary drums. The rotary drums are opposed to each other, so the rotary axes of the rotary drums are parallel to each other. Again—a pre-selected space is formed between the rotary drums. With this structure, when the part mounting plate is inserted into the space, the shear force is applied to the parts In this case, 'the board without parts has a first thickness and the part mounting board has a second thickness. In this space, it is chosen to be larger than the first thickness and smaller than the second thickness. Ί—j ,: 丨- ----- Order ------ (Please read the notes on the back before filling out this page) Printed by the Central Standards Bureau of the Ministry of Economic Affairs, Consumer Cooperatives, this paper ruler New Zealand @ National Standards (CNS) A4 regulations; ^ 210x ^ 97 Gongchu ·) Section of the Consumer Standards Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs of the People's Republic of China. 5. Description of the Invention (Therefore, the shear force is parallel to the part to separate the part from the board. Simple illustration of parts: Θ pieces and M positions can be reused. Figure 1 is the separation device of the present invention-the embodiment; Figure 2 is the separation device of the second embodiment of the present invention; Figure 3 Is the separation device of the third embodiment of the present invention; younger: 4 图 疋 在 第一 至= 慎 # 丨 Shi shape; the cross-sectional shape of the rotary drum in the consistent target example is shown in Figure 1 in the first to third embodiments; the force is shown in Figure 6 in the first to third embodiments. The shape of the rotating roll surface; and FIG. 7 is another shape of the rotating drum in the first to third embodiments. First, the principle of the present invention will be described first to facilitate the understanding of the present invention. Generally, 'many The parts are mounted on a printed circuit board. The printed circuit board on which the parts are mounted is also referred to as a part-mounted circuit board as described above. In this case, the mounted parts are mainly divided into first, second, and third parts. Type III parts. Here the type I parts are connected to the printed circuit board using screws and can be referred to as screw tightened type parts, while the type II parts have lead bars inserted into holes in the printed circuit board ( leads), and the use of solder connection can be referred to as in-hole connection (in h〇〗 ec〇nnectin) type parts. On the other hand, the second type parts are connected to the printed circuit board by solder or adhesive. The paper size is suitable for the national standard (CNS) A4 specification (210X297) (please read the precautions on the back before filling this page)

A7 A7 Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs 5. Description of the Invention (4): ~~~ — It can be called surface mounted parts. When an external force equal to or higher than the screw connection force is applied to the first type member, each part can be separated from the circuit board by breaking the screw on the first type member. In this case, as long as an external force sufficient to damage the part is applied thereto, even when the external force is less than the connecting force of the screw, each part can be separated. Anyway 'Even if the external force is smaller than the connecting force of the screw, the first part can be separated from the printed circuit board. In this case, breakage of parts such as screws may remain on the printed circuit, and even if [the disassembly is broken or the type zero remains on the printed circuit board, no problem occurs. This means that parts and printers, boards can be recycled like metal resources. The ^ -type part can be cut off by the wrong strip of the second-type part or destroy the second part. In this case, breakage or streaking of the second type part may occur in the first type part on the printed circuit board like a foot part, so the second = yes = in metal resources. 7 is reclaimed, and as two parts can be separated by applying an external force equal to or higher than the joint force of the material or adhesive to the third type part. The inverse is that an external force is applied to these three types of parts in a direction parallel or perpendicular to the printed surface. Women's watch = How to 'It must be applied in a direction parallel to the back and back or separate parts. The cutting screw is perpendicular to the mounting surface of the part. The screw 4 and the wrong strip are generally placed in consideration of this occasion.' The external force can include a Shear force, —impact force and a shock ί ----------------, — Ding__ |. ------- 一 ---- (Please read the back first Please pay attention to this page and fill in this page) n ^ — Hu · 7 \ Ί \ 印 Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 5. Description of the invention (in the case of 8 & surface impact, the impact is difficult to effectively The energy of the part being transferred. That is, the impact force applied to any part is lost and not enough to separate the part from the printed circuit board. Similarly, the% power of the s-powered wiper is difficult to supply enough force to separate the part. ^ 'To ground' by application-the energy loss caused by the shear force to the part is very small compared to the impact force. Therefore, the 'shear force is suitable for the printed circuit from the part. Especially by the application of shear force, screws and stray strips. It can be easily cut off or the parts can be easily removed from the printed circuit board at the same time. It is effective. Back to the center of the cylinders facing each other ', so the rotation axes are parallel to each other. In this case, cut the two inserting parts of the women's printed circuit board to the space between the rotating drums and apply them to the order pieces. Becomes parallel to the part mounting & surface. Therefore the screws and streaks are cut off or the parts are removed or repelled from the printed circuit board so that the parts can be separated from the printed circuit board. In this case, if The printed circuit board is continuously inserted into the space between the rotary drums, and the separation efficiency of the components is further improved. The separation efficiency is further improved by providing a plurality of separating portions. In addition, the shear force can be applied on the surface of the rotary drums. Irregularities are effectively applied to the parts. Here, the rotation direction of the rotary drum is substantially the same as the insertion direction of the printed circuit board on which the part is mounted. However, the rotary speeds of the rotary drums may be the same or slightly different. The difference is that the space between the rotary drums is slightly larger than the thickness of the printed circuit board itself and smaller than the thickness of the printed circuit board on which the parts are mounted. When the space Or less like a printed circuit board, the printed circuit board itself is destroyed. This makes it from the printed circuit

Size of this paper) Λ 尔 (2i ^ 7 ^ FT (Please read the precautions on the back before filling this page)

A7 A7 Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs 5. Description of the invention (6) It is difficult to separate the parts from the board. On the 奘 face, when the space is equal to or greater than the thickness of the part: 1, the separation and destruction of the part will not be produced -ϋ According to the original material, the printed circuit board can be separated from the part with a pure price because of the shear force In a direction parallel to the mounting surface of the part: 2 on the part. Moreover, the separation efficiency is greatly improved compared with the conventional manual separation method, because the < > manual separation process is not required. Also according to the present invention, many parts can be separated at the same time. Therefore, the separation rate can be further increased. As a result, the component-mounted printed circuit board can be efficiently recycled. [Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings. (First Embodiment) Fig. 1 is a second examination. A separation device 10 according to a first embodiment of the present invention includes a pair of rotary drums 13 and lb. The rotary drums 1 & and lb are arranged so as to face each other. The rotary drum 1a has a rotary shaft 2a, while the rotary drum 1b has a rotary shaft 21 parallel to the rotary shaft 2a). A further preselected space 3 is maintained between the rotary drums la and lb. With this structure, the component mounting printed circuit board 4 is inserted into or introduced into the space 3. Here, a plurality of parts 5 are mounted on a printed circuit board 6 on which a printed circuit board 4 is mounted. In this case, the printed circuit board 6 has a first thickness L1 'and the component-mounted printed circuit board 4 has a second thickness L2. In this case, the 'space 3' is designed to be larger than the first thickness li and smaller than the second thickness L2. In addition, the rotating drum la is in the first direction 7a or the rotation around the rotating shaft 2a. The paper size applies the Chinese National Standard (CNS) A4 specification (210 × 297 mm) (Please read the precautions on the back before filling this page)

'1T A7 A7 Printed by the Shellfish Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 5. Description of the invention (7) The clockwise rotation, while the rotary drum ib rotates counterclockwise in the second direction. Here the first and second rotations: Xiang Yao, and Qi refers to the insertion or supply direction of the component mounting printed circuit board 4. In this case, the component mounting printed circuit is inserted in the insertion direction A ^ into the space 3. Therefore, the shearing force is applied to the part 5 in parallel to the part mounting table.士士 里 _ L 万万 向, Ό 果, separate the piece 5 from the printed circuit board 6 as shown in the figure. Therefore, the part 5 ^ order 1 dry knife off is implemented in the conventional embodiment. Here, as shown in Fig. 4, the & mother-to-revolving drum 1 > may have a plurality of irregularities 40 on its surface. The irregular portion 4G is used to efficiently separate the part 5 from the printed circuit board 6. The cross-section of each-irregular part 40 is trapezoidal, as shown in FIG. 4. As shown in FIG. 5, each 1M port lb of each rotary drum may have a plurality of irregularities 5G on its surface. The disregarding portion 50 is formed to efficiently separate the parts 5 from the printed circuit board 6. The cross section of each irregular portion 50 is triangular as shown in Fig. 5. As shown in FIG. 6, each of the rotary drums h and lb may have a plurality of irregularities 60 on its surface. The irregularities 60 are formed to efficiently separate the parts 5 from the printed circuit board 6. The cross section of each irregular portion 60 is rectangular, as shown in FIG. 6. It is hoped that in Figures 4 to 6, each of the irregularities 41, 51, and 61 of the irregular 4 40 5 0 and 60 falls in the range between 1 mm and 30 mm, and at the same time, the irregular portions 40, 50, and 60 Each distance 42, 52 and 62 between 60 also falls in the range between imrn and 30 mm. In this case, the cross section of each of the irregular portions 60 may be square. And each of the rotary drums la and 113 can be shown in FIG. 7 as a substantially paper size applicable to the Chinese National Standard (CNS) A4 specification (21〇297 mm fn —Bn n «n ^ lin ^ i ί i. -m · m ^^^ 1 m T4 J4 ， 1 (Please read the precautions on the back before filling out this page} A7 A7 Printed by the Consumer Cooperatives of the Central Standards Bureau, Ministry of Economic Affairs, i. Invention Description (8) Flat surface. ( (Second embodiment). Referring to FIG. 2, a first embodiment of separating dream spots according to the first K embodiment of this month is similar to the first embodiment, except for the separation: the knife-off device and a belt conveyor have a belt conveyor. As shown in Fig. 2, "minutes 2-0" includes a 21b and a belt conveyor 22. The rotating shaft 21a and 21b are arranged parallel to each other. In particular, the rotating drum 2la has a back-roughing cylinder π and a ten-lamp rotating shaft 23a. At the same time, the rotary drum training has the “rotation axis now. In this case, the rotary axes 23a * 23b are parallel to each other. Again, the preselected space 24 is maintained between the rotary drum ⑴ and the training. On the other hand, the conveyor 22 is adjacent to the rotation The rollers are arranged in a manner of 2ib. A plurality of parts Ansang printed circuit board called leather put on the skin The belt 22a of the conveyer 22 is conveyed to the rotary drum 2i_2ib. Here, a plurality of parts 26 are mounted on a printed circuit board 27 of each printed circuit board 25. The belt conveyer 22 continuously conveys parts Mount the printed circuit board 25 to the rotary drum ⑴ and m. Under this structure, the component mounting printed circuit board 25 is successively inserted into the space 24. The rotary drum 21a is rotated in the first direction-about the rotary shaft 23a, in the same phase. The rotating drum 21b rotates around the rotation axis 23b # in the second direction 28b. Here, the first and second rotation directions 28 & and 28b refer to the insertion or supply direction a of the component mounting printed circuit board 25, from the left hand of the figure Each part is supplied with a printed circuit board to its right-hand side. In this state, the printed circuit board 25 for component mounting is inserted into the space 24 by the belt conveyor 22 in the insertion direction A. Therefore, the shear force is parallel to 11 sheets of paper Dimensions are applicable to China National Standard (CNS) A4 specifications (210X297). (Please read the precautions on the back before filling out this page.) Order A7 ------------ 5. Description of the invention (9) Part mounting surface On the direction Figure 2 shows the printed circuit board from Yinxuyu, Niu 26. Therefore, the component 20 is not as good as the printed circuit board. Please read the note first. Item S-Λ: write, copy, page in the second embodiment It is implemented. 〃. Too much 'Separation of the part 26 (third embodiment) The first two assists ^ The separation device according to the third embodiment of the present invention and-to the rotary drum.-Early-the rotary drum 31 is replaced as shown in Fig. 3 As shown, the separation and loading device 30 includes a rotary drum 31 and a pictamine 32. The rotary drum 31 is arranged at the position f above the belt conveyor%, and has a -preselected space "held between the rotary drum 31 and the " benefit 32. In this case, the rotary drum ^ has a rotary shaft 33 and is One turns around the rotation direction 38 of the rotating shaft 33. On the other hand, a plurality of component mounting printed circuit boards 35 are placed on the belt reel of the belt conveyor 32. Here, a plurality of components are mounted on the component mounting printing On the printed circuit board 37 of the circuit board 35. The belt conveyor 32 continuously transports the part-mounted printed circuit board to the rotary drum 31. Under this structure, the part-mounted printed circuit board 35 is successively supplied to the space% Central Standard of the Ministry of Economy The employee cooperative of the bureau is printing. In this case, the “turning direction 38” refers to the insertion direction A of the component mounting printed circuit board 35. In this state, the component mounting printed circuit board 35 is inserted by the belt conveyor 32 in the insertion direction A Is inserted into the space 34. Therefore, a shear force is applied to the part 36 in a direction parallel to the part mounting surface. As a result, the part 36 is not separated from the printed circuit board 37 as shown in FIG. 3. Therefore, the part The separation of 36 is implemented in the third embodiment. 12 This paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) A7 Printed by the Staff Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 5. Description of the invention (10 [Example] Next, we will refer to FIG. 1 as an example of the present invention and a comparative example. The printed circuit board 6 is reinforced. The printed circuit board 6 is made of glass fiber reinforced% oxygen resin with a copper mold. The part 5 is mounted on the part. The printed circuit board 6 on which the printed circuit board 4 is mounted is printed with a thickness U of the printed circuit board U & .6_. The circuit board 6 is equipped with M order parts, second type parts and third type parts I arranged on the printed circuit board. Part 6 is used as part 5. In particular, two connectors used for input and output signals and = = pin (wide) are used as the first type parts. The connector is mounted on the printed circuit using upright screws and solder. "Up. ㈣DIP (Dual In-line Type, ^ ηη_Ηη_ ~) and ten-solid resistors are connected to the printed circuit board 6 using solder, such as type II parts. Each lead has 240 lead pins' and 10 resistors There are two lead pins on the back. 10 QFP (four-core flat package, quad Flat suppressors and% chip resistors are also assembled as third-type parts. Each lead has a lead pin. QFP is fixed on the printed circuit board 6 by solder, and the chip resistors are fixed by adhesives and materials. Mounted on the printed circuit board 6. In the case, 'the thickness of the component mounting printed circuit board 4 is 15 nm. &Quot; Next, the first and second examples and the first to third comparative examples will be described in detail. The separation characteristics of the part 5 were evaluated by the cutting-off rate of the part 5 as represented in Table W. Here, each separation rate indicates the ratio of the weight of the separated and recovered parts to the total weight of all parts 5. 13

.!. C-^--(Please read the notes on the back before filling in this page) Order one --- This paper size system (CNS) A4i £ iT21〇X297 '^ t) A7 B7 Central Standard of the Ministry of Economic Affairs Bureau employee consumer cooperatives printed five, invention description (u ----

a In these examples, the rotary drums la and lb (that is, operated as a pulverizer) as shown in Fig. 1 are used as a separating device and are formed of a high chromium cast iron. Still other abrasion-resistant materials can be used to form the rotary drum "and lb. It may also attach a cover to the rotary drum 丨 In addition, a tungsten carbon coating smaller than 5mm can be welded to each of the rotary drums 丨Surface. In the first example, the rotary shafts 仏 and holes of the rotary drums la and lb (that is, the pulverizer) are arranged parallel to the component mounting surface of the component mounting printed circuit board 4. In this state, the components The mounting printed circuit board is inserted into the space 3 between the rotary drums 1 a and 1 b. Although the space 3 can be adjusted according to the thickness u of the printed circuit board 6 and the thickness of the parts 5 mounted on the printed circuit board 6, the space 3 is adjusted according to A typical printed circuit board is preferably adjusted. In particular, the space 3 may have a width wider than the thickness L1 of the printed circuit board 6 and wider than the thickness L2 of the printed circuit board 4 where the parts are mounted. This shows an intermediate thickness (intennediate thic] aiess) is preferably between the thicknesses L1 and L2. In the first example, 'the diameter of each rotating drum i is 150 mm and its length is 200 mm. And the space 3 is 1 Omm wide while rotating at the same time Roller The rotation directions of U and lb are set to be clockwise and counterclockwise, respectively, to guide the component mounting PCB 4 in the insertion direction A. And every 14 (Please read the precautions on the back before filling this page)

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ji 0 I It is a paper standard (CNS) (21GX297 Central Government Standards Bureau, Ministry of Economic Affairs, Employees' Cooperatives, Consumers' Cooperatives, Prints, and Prints B7) V. Description of the invention (12) — ~ '—-Rotary roller ι “口 ib # The rotation speed is set to 50. Generally speaking, the diameter of each rotation drum 1 is set to be 100 to 30 GGmm in length, and the rotation speed is 5 to 25 pm. In the first example, the separation rate is shown in Table 1. It is 86%. In the second example, the first example is repeated twice under the same conditions. That is, the component mounting printed circuit board 4 is continuously inserted into the space 3. In the second example, the separation rate is as shown in the table. 1 is 92%. The first comparative example is implemented using a device having a structure similar to that of the first example, except that the space 3 is set to the same thickness as the thickness of the printed circuit board 6. Other conditions are the same as the first example. -In the comparative example, the printed circuit board 6 itself was damaged. In the second comparative shot, the impact force is applied to the part from a direction parallel to the mounting surface of the part. ) An impact inspection device is used as a mule. At the same time, the weight of the material is set to be equal to 2.2 kg, and the distance between the rotation axis of the chain and the impact point is set to 36. The angle of entry of the bond (bdngingangie) was set to 90 degrees. In the second comparative example, the separation rate is 12% as shown in Table i. In the third comparative example, the impact force is applied to the part from a direction perpendicular to the mounting surface of the part. Here, the utilization apparatus and conditions are the same as those of the second comparative example. In the third comparative example, the separation rate is 6% as shown in Table 2. In the fourth comparative example, a vibration force is applied to the component in a direction parallel to the mounting surface of the component using a conventional shaker. In this case, the maximum acceleration of the vibration force is set to 40G. In the fourth comparative example, the separation rate is 0% as shown in Table i. 15 This paper size applies to Chinese national standards (〇 ^ 7 八 4standard (2) 〇297 / J ^ ~ y (Please read the precautions on the back before filling this page) Order A7 B7 V. Description of the invention (13)- ------ It is clear from the examples and comparative examples that according to the first and second examples, zero = same = separately from the component mounting printed circuit board 4. It is compared with the first example and the second to fourth ratios. _, It can be confirmed that the shear parallel to the part installation ^ is suitable as an external force for separating parts. The vertical force is performed by the remaining parts. In the autumn, it is difficult to apply this vertical force to a plurality at the same time. In addition, & tb is better than the first example and the first comparative example to confirm that the space 3 is set larger than the thickness L1 of the printed circuit board 6. This is because when the space 3 is equal to the printed circuit board, the first example is equivalent to the printed circuit board. When the thickness L1 of 6 is used, the printed circuit board 6 itself is damaged. By comparing the first example and the second example, it is found that the separation efficiency can be improved by repeating the separation process. --i, I (please read the notes on the back first # Fill this page) 16 paper sizes are applicable to China National Standard (CNS) A4 (210X297)

Claims (1)

The Central Government Bureau of the Ministry of Economic Affairs, the Consumer Cooperatives' Printing and Printing Co., Ltd. ~ a device for separating the parts from a part with a part mounting surface, including an e-board, including: 97 pieces of printed circuit knife separation units for women in parallel A shear force was applied to the part in the direction of the surface of Ding Wenjiao to separate the part. Only = The device described in item 1 of the scope of the patent application, wherein: 4 the separation sheet S includes _ pairs of revolving step antelopes AA JU turn 'Zhongqi, so the w / saddle's revolving axis rotates each other between. And "there is a pre-selected space in such a device as described in item 2 of the patent application scope, wherein: when the board is inserted into the space, the shear force J knife is applied to the part, and the rotary axis Becomes parallel to the mounting surface of the part. 4. The device according to item 2 of the scope of the patent application, wherein: = the plate of the part has a first thickness' and the plate with the part has a thickness of < The two rooms were selected to be larger than the first thickness and smaller than the second thickness. 5. The device described in item 2 of the patent application scope, wherein the mother rotary drum has a plurality of irregularities on its surface. 6 The device as described in claim 2 of the patent scope, wherein: each rotary drum has a substantially flat surface. 7'A device for separating a printed circuit board from a part having a part mounting surface, including : A belt conveyor 'to carry the board in a first direction; and a rotary drum' disposed at a predetermined position above the belt conveyor, and having a rotary shaft; C8 D8 Printed by the Central Laboratories of the Ministry of Economic Affairs, Shellfish Consumer Cooperatives, and rotated Lx—the forces are in—arranged in a direction parallel to the surface where the material is installed on the part. 8. The device according to item 7 of the scope of patent application, wherein:-a pre-selected space is provided between the rotary drum and the belt conveyor, = a rotary axis is parallel to the part mounting surface; and when the board is inserted into the space The shear force is applied to the part. The device described in item 8 of the scope of patent application, wherein: the plate without the part has a first thickness, and the plate with the part has a first thickness, and the space is larger than the first thickness and larger than the The second thickness is small. The device described in item 7 of the application, wherein: The rotating drum has a predetermined rotation direction, and the rotation direction is substantially equal to the first direction. The device according to item 7 of the patent claim, wherein: the rotary drum has a plurality of irregularities on its surface. The device as claimed in claim 7 of the patent scope, wherein: the rotary drum has a substantially flat surface. 13 ^-A device for separating a printed circuit board from a part having a part mounting surface, including:-a pi transporter to transport the board in a predetermined direction; and-the rotation n is disposed adjacent to The belt has a rotating shaft; the square θ Γ rotating rollers are arranged in such a manner that a shear force is applied to the component in a direction parallel to the mounting surface of the component. (Please read the notes on the back before filling out this page) Stupid Ordering 'The scope of patent application 2 is set as described in item 13 of the scope of patent application. 5 Haier and other rotary drums are opposed to each other, so the rotary shafts are opposite each other'. There is a preselected space between the rotary drums. This parallel = the device described in the patent application No. ⑴ ⑴, although the shout plate is inserted into the space, the shear force is applied. So the swivel cars become parallel to the part mounting surface. ~ 16 pieces of the device described in the scope of patent application, where the board without the part has-the first thickness, zero-the second thickness, and the board with 4 Korean pieces has the space than the first A thickness is larger and smaller than the second thickness. Shishen called the device described in the patent scope item 13, wherein each-· rotating drum has a plurality of irregularities on its surface. 18. The device according to item Π of the patent application scope, wherein: each of the rotary drums has a substantially flat surface. A method for separating a printed circuit board from a part having a part mounting surface by a road, the steps include: y shearing the part in a direction parallel to the part mounting surface to separate the part from the board; and I The separation part and the separation plate are separately recovered for reuse. 7 Pack-(Please read the precautions on the back before filling out this page) tr ------------ II -------- 19 This paper size applies to China National Standard (CNS) Μ specifications (2 丨 οχ2 ”public seam>