Vacuum Adsorption System for Electronic Components

Abstract

The present invention discloses a vacuum adsorption system for electronic components, comprising: a vacuum generating part, the vacuum generating part having: a first base, a plurality of vacuum generators and a plurality of regulating switches, wherein each of the vacuum generators is respectively accommodated in the first base and is independently blocked or opened through the regulating switch. The buffer device respectively has: a cylindrical second base and a sliding rod, and the second base and the sliding rod jointly form an air passage. Each second base corresponds to each vacuum generator one by one and is connected through an air pipe. The vacuum suction cups correspond to each buffer device one by one, and the vacuum suction cups respectively have: a third base and a suction attachment provided on the third base. The material of the suction attachment is sponge material with a Shore hardness A of less than 40 degrees, and in the case of not being pressed, the thickness of the suction attachment is more than 5 mm. The vacuum adsorption system of the present invention can easily be compatible with different assembly processes of electronic components.

Description

Technical Field

[0001] The present invention relates to the field of pneumatic technology, and particularly to a vacuum adsorption system for electronic components. Background Art

[0002] Currently, as an important pneumatic component for sucking parts, vacuum suction cups are widely used in automated equipment. Among these devices, the vacuum suction cup acts as the finger at the end of the manipulator and can be used to suck sheet-like and light electronic components such as wafers and chips.

[0003] Taking chips as an example, chips are sometimes placed in trays for feeding. A large number of chips are placed in a tray at certain intervals. In addition, the chips are transported to different circuit boards by vacuum suction cups and welded. To improve production efficiency, a vacuum suction cup group is usually set up to simultaneously adsorb multiple electronic components and feed them. Existing vacuum adsorption devices generally use vacuum generators and control multiple vacuum suction cups in parallel, that is, a single air source simultaneously controls the on / off of multiple vacuum suction cups. However, in some cases, due to changes in the assembly process, such as changes in the assembly position, there are situations where some vacuum suction cups do not need to work. In this case, among the vacuum suction cup groups connected in parallel, since some vacuum suction cups do not work (break vacuum), this may cause the overall adsorption of the vacuum suction cup group to fail.

[0004] In addition, since the thickness of electronic components such as chips and wafers is very thin and they are easily broken, when the existing vacuum suction cups adsorb these thin and fragile electronic components, there are often situations where the components are broken due to excessive force of the vacuum suction cup against the product. Summary of the Invention

[0005] The present invention aims to solve at least to some extent one of the problems in the prior art. For this purpose, the present invention provides a vacuum adsorption system that can easily be compatible with different assembly processes of electronic components.

[0006] A vacuum adsorption system for electronic components according to one aspect of the present invention includes: a vacuum generating part, the vacuum generating part having: a first base, a plurality of vacuum generators, and a plurality of adjustment switches, wherein each of the vacuum generators is respectively accommodated in the first base and is independently blocked or opened through the adjustment switch; a plurality of buffer devices, each of the buffer devices having: a cylindrical second base and a sliding rod, one axial end of the sliding rod is accommodated in the second base and is axially slidable relative to the second base, and the second base and the sliding rod together form an air passage, each of the second bases and each of the vacuum generators correspond one by one and are connected through an air pipe; a plurality of vacuum suction cups, each of the vacuum suction cups and each of the buffer devices correspond one by one, each of the vacuum suction cups having: a third base and a suction attachment provided on the third base, the third base is mounted to the other axial end of the sliding rod and is in communication with the air passage, the material of the suction attachment is a sponge material with a Shore hardness A of less than 40 degrees, and in the case of not being pressed, the thickness of the suction attachment is 5 mm or more.

[0007] The vacuum adsorption system according to one aspect of the present invention has the following beneficial effects: It can easily be compatible with different assembly processes of electronic components.

[0008] In some embodiments, the first base is provided with: a first hole portion for connecting to an external high-pressure air source, a plurality of second hole portions, the vacuum generators are respectively accommodated in the second hole portions, a plurality of third hole portions, each of the third hole portions respectively connects each of the second hole portions and the first hole portion, a plurality of fourth hole portions for communicating with the air passage, each of the fourth hole portions respectively communicates with each of the second hole portions, and in the state where the vacuum generator is accommodated in the second hole portion, each of the fourth hole portions is opposite to the adsorption end of each of the vacuum generators; each of the adjustment switches is respectively provided with a first end portion accommodated in the third hole portion, and the first end portion can be fed axially along the third hole portion to block or open between the first hole portion and the second hole portion.

[0009] In some embodiments, the first hole portion extends in a first direction, the first direction is parallel to the length direction of the first base; the second hole portion extends in a second direction, the second direction is parallel to the width direction of the first base and is orthogonal to the first direction; the third hole portion extends in a third direction, the third direction is parallel to the height direction of the first base and is respectively orthogonal to the first direction and the second direction; the fourth hole portion extends in the third direction.

[0010] In some embodiments, a plurality of air outlet portions are further formed in the first base, and the air outlet portions communicate with the second hole portions respectively. Moreover, in a state where the vacuum generator is received in the second hole portion, the air outlet portions communicate with the air outlet ends of the vacuum generators respectively.

[0011] In some embodiments, the air passage includes a sixth hole portion axially penetrating the second base and a seventh hole portion axially penetrating the sliding rod, and the sixth hole portion communicates with the seventh hole portion; a third air pipe joint is hermetically installed at one axial end of the sixth hole portion, and the third air pipe joint is connected to the vacuum generator through the air pipe; at least a part of the sliding rod is received in the sixth hole portion and is axially slidable relative to the sixth hole portion; when the sliding rod slides in a direction away from the third air pipe joint, a part of the sliding rod passes through the other axial end of the sixth hole portion and is exposed outside the second base; the buffer device further includes an elastic member, and the elastic member abuts against the sliding rod at one end in a compressed state and abuts against the second base at the other end.

[0012] In some embodiments, a restricting portion is provided on the inner wall of the sixth hole portion, and a polygonal portion is provided on the part of the sliding rod received in the sixth hole portion, and the polygonal portion is circumferentially restricted by the restricting portion in the sixth hole portion.

[0013] In some embodiments, the restricting portion includes a plurality of second groove portions formed on the inner wall, the plurality of second groove portions are circumferentially spaced apart on the inner wall, and the second groove portions extend axially along the sixth hole portion respectively; the corner portions of the polygonal portion are respectively received in the second groove portions and are slidable along the second groove portions.

[0014] In some embodiments, an eighth hole portion for communicating with the air passage is formed on one side of the third base, and a plurality of ninth hole portions are formed on the other side of the third base, and the ninth hole portions communicate with the eighth hole portion; a plurality of tenth hole portions are formed on the suction member, and the tenth hole portions respectively correspond to the ninth hole portions one by one.

[0015] In some embodiments, the material of the suction member is a foamed sponge material, and the Shore hardness A of the suction member is above 28 degrees and below 32 degrees.

[0016] In some embodiments, the thickness of the suction member is 12 mm or less. Description of the Drawings

[0017] Figure 1 is a perspective view of the left side view of an embodiment of the vacuum generating portion for a vacuum generator according to the first aspect of the present invention.

[0018] Figure 2 is Figure 1 A perspective view of the right side of the vacuum generating section of the vacuum generator.

[0019] Figure 3 is Figure 1 A perspective view of the left side of the first base in

[0020] Figure 4 is Figure 1 A perspective view of the right side of the first base in

[0021] Figure 5 is Figure 1 A cross-sectional view taken along line A-A in

[0022] Figure 6 A schematic diagram of an embodiment of the vacuum adsorption device according to the second aspect of the present invention.

[0023] Figure 7 is Figure 1 A schematic diagram of the buffer device.

[0024] Figure 8 is Figure 7 A cross-sectional view taken along line B-B in

[0025] Figure 9 A schematic diagram of another embodiment of the buffer device.

[0026] Figure 10 A schematic diagram of yet another embodiment of the buffer device.

[0027] Figure 11 is Figure 7 A cross-sectional view taken along line C-C in

[0028] Figure 12 is Figure 1 A bottom view of the vacuum chuck.

[0029] Figure 13 is Figure 12 A cross-sectional view taken along line D-D in Detailed implementation manners

[0030] The concept and technical effects of the present implementation manner will be clearly and completely described below in combination with the embodiments, so as to fully understand the purpose, features and effects of the present implementation manner. Obviously, the described embodiments are only a part of the embodiments of the present implementation manner, rather than all embodiments. Based on the embodiments of the present implementation manner, other embodiments obtained by those skilled in the art without creative efforts shall fall within the scope of protection of the present implementation manner.

[0031] In the description of the embodiments of this embodiment, if the description involves orientation, such as "up", "down", "front", "back", "left", "right", etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing this embodiment and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to this embodiment.

[0032] In the description of the embodiments of this embodiment, if a certain feature is referred to as "arranged", "fixed", "connected", "installed" on another feature, it can be directly arranged, fixed, connected on another feature, or indirectly arranged, fixed, connected, installed on another feature. In the description of the embodiments of this embodiment, if "several" is involved, its meaning is more than one. If "multiple" is involved, its meaning is more than two. If "greater than", "less than", "exceeding" are involved, they should all be understood as not including the present number. If "above", "below", "within" are involved, they should all be understood as including the present number. If "first", "second" are involved, it should be understood as used to distinguish technical features, rather than indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0033] The vacuum adsorption system for electronic components according to this embodiment includes: a vacuum generating part 100, a plurality of buffer devices 200, and a plurality of vacuum suction cups 300.

[0034] Among them, the vacuum generating part 100 has: a first base 101, a plurality of vacuum generators 121, and a plurality of adjustment switches 102. Each vacuum generator 121 is respectively accommodated in the first base 101 and is independently blocked or opened through the adjustment switch 102.

[0035] Among them, each buffer device 200 respectively has: a cylindrical second base 201 and a sliding rod 203. One end of the sliding rod 203 in the axial direction is accommodated in the second base 201 and is axially slidable relative to the second base 201. The second base 201 and the sliding rod 203 together form an air passage 221. Each second base 201 and each vacuum generator 121 correspond one by one and are connected through an air pipe 222.

[0036] Among them, each vacuum suction cup 300 and each buffer device 200 correspond one by one. Each vacuum suction cup 300 respectively has: a third base 301 and a suction attachment 302 provided on the third base 301. The third base 301 is installed at the other axial end of the sliding rod 203 and is communicated with the air passage 221. The material of the suction attachment 302 is a sponge material with a Shore hardness A of less than 40 degrees, and when not under pressure, the thickness of the suction attachment 302 is 5 mm or more.

[0037] According to the vacuum adsorption system for electronic components of the present embodiment, it is possible to easily accommodate different assembly processes of electronic components. Specifically, in the vacuum generating unit 100, since the vacuum generator 121 is installed in the first base 101 and the vacuum generator 121 can be independently blocked or opened by the adjustment switch 102, it is possible to independently control the on / off of each vacuum generator 121. By providing a plurality of vacuum suction cups 300, it is possible to adsorb a plurality of electronic components such as chips, etc., and transfer these electronic components to, for example, a circuit board at the same time. In addition, when the electronic components need to adapt to different circuit boards, for example, when there are some positions on the circuit board where no electronic components need to be installed, it is only necessary to block the vacuum suction cup 300 corresponding to this position of the circuit board through the adjustment switch 102. Therefore, the vacuum adsorption system of the present embodiment can easily accommodate different assembly processes of electronic components.

[0038] In addition, by installing the air pipe 222 connecting the vacuum generator 121 and the buffer device 200 into the second base 201 of the buffer device 200, since the second base 201 does not need to slide, it is possible to suppress the air pipe 222 from being bent or wound as the sliding rod 203 slides. Even when there are a plurality of vacuum suction cups 300 and a plurality of buffer devices 200, it is possible to suppress the bending or winding of the air pipe 222.

[0039] Furthermore, since the vacuum suction cup 300 uses a sponge material with a Shore hardness A of less than 40 degrees as the suction attachment 302, it is possible to at least to a certain extent suppress the acting force when the vacuum suction cup 300 abuts against electronic components such as chips and wafers, and reduce the risk of the vacuum suction cup 300 crushing the electronic components.

[0040] Hereinafter, each component of the vacuum adsorption system of the present embodiment will be described in detail.

[0041] [Vacuum generating unit 100]

[0042] Figure 2 、 Figure 3 is a perspective view of the vacuum generating unit 100, Figure 4 、 Figure 5 is a perspective view of the first base 101, Figure 6 isCross-sectional view taken along line A-A in Figure 2 In Figures 2 to 6 , for ease of explanation, a schematic indication of direction is given.

[0043] Referring to Figures 2 to 6 and with reference to Figure 1 , as described above for the vacuum generating section 100, the vacuum generating section 100 includes: a first base 101, a plurality of vacuum generators 121, and a plurality of adjustment switches 102. Each vacuum generator 121 is respectively accommodated in the first base 101. Specifically, referring to Figures 2 to 6 , the vacuum generating section 100 includes: a first base 101 and a plurality of adjustment switches 102. Among them, the first base 101 is provided with: a first hole portion 103, a plurality of second hole portions 104, a plurality of third hole portions 105, and a plurality of fourth hole portions 106. Among them, in the first base 101, the first hole portion 103 is used to connect to an external high-pressure gas source 107. Each second hole portion 104 is respectively used to accommodate a vacuum generator 121. Each third hole portion 105 respectively communicates each second hole portion 104 with the first hole portion 103. Each fourth hole portion 106 is used to communicate with the gas passage 221 of the buffer device 200 (with reference to Figure 8 ). Each fourth hole portion 106 respectively communicates with each second hole portion 104, and in a state where a vacuum generator 121 is accommodated in the second hole portion 104, each fourth hole portion 106 is respectively opposite to the adsorption end 124 of each vacuum generator 121. Each adjustment switch 102 is respectively provided with a first end portion 108 accommodated in the third hole portion 105. The first end portion 108 can be fed axially along the third hole portion 105 to block or open the space between the first hole portion 103 and the second hole portion 104.

[0044] Continuing to refer to Figure 6 , the vacuum generator 121 of this embodiment can be, for example, a cylindrical vacuum generator 121. One axial end of the vacuum generator 121 is provided with an intake end 122, and the other axial end is provided with an outlet end 123. The adsorption end 124 is provided between the outlet end 123 and the intake end 122. In addition, the outlet end 123 can be connected to a muffler (not shown). When the vacuum generator 121 is accommodated in the second hole portion 104, the intake end 122 at one axial end of the vacuum generator 121 is located on the side of the second hole portion 104 adjacent to the first hole portion 103, the outlet end 123 at the other axial end of the vacuum generator 121 is located at one end of the second hole portion 104 facing the outside of the first base 101 (left side in the drawing), and the adsorption end 124 is opposite to and communicates with the fourth hole portion 106. In addition, for example, two first sealing rings 125 can be sleeved on the outer periphery of the vacuum generator 121. The two first sealing rings 125 are sleeved on both sides of the adsorption end 124 along the axial direction respectively. Thus, the sealing performance between the adsorption end 124 of the vacuum generator 121 and the first base 101 can be improved.

[0045] Continue to refer to Figure 4 、 Figure 5 and, with reference to Figure 2 、 Figure 3 The first base 101 is, for example, in the shape of a rectangular parallelepiped block. In order to reasonably layout the structures of the respective hole portions, in some embodiments, the first hole portion 103 extends in a first direction (the front-back direction in the drawing), and the first direction is parallel to the length direction of the first base 101. In order to facilitate the machining of the first hole portion 103, the first hole portion 103 may directly penetrate through the first base 101 in the first direction. The specific opening position of the first hole portion 103 in the first base 101 is not particularly limited. For example, it may be opened at the lower right of the first base 101. One axial end of the first hole portion 103 may be provided with a first plug (not shown, located on the front side of the first base 101), and the other axial end of the first hole portion 103 may be provided with a first air pipe joint 109 for installing the air pipe 222.

[0046] Continue to refer to Figure 4 and, with reference to Figure 2 In order to easily layout the second hole portion 104, the second hole portion 104 extends in a second direction (the left-right direction in the drawing), and the second direction is parallel to the width direction of the first base 101 and orthogonal to the first direction. The second hole portion 104 may, for example, extend from a position near the upper part on the left side of the first base 101 toward the right side of the first base 101. In addition, the second hole portion 104 may not penetrate through the first base 101. The number of the second hole portions 104 is not particularly limited and may be determined according to the number of the vacuum generators 121 to be installed. For example, the number of the second hole portions 104 may include 6 to 8. The second hole portions 104 may be evenly spaced along the first direction of the first base 101. One end of the second hole portion 104 located on the left side of the first base 101 may be used for exhausting the air from the air outlet 123 of the vacuum generator 121. In addition, when an air outlet portion 110 (described later) for exhausting the air of the vacuum generator 121 is opened at other positions on the first base 101, the second hole portion 104 may also be blocked. For example, one end of the second hole portion 104 located on the left side of the first base 101 may be blocked by a second plug 111.

[0047] Continue to refer to Figure 6, the third hole portion 105 is appropriately formed according to the positions of the first hole portion 103 and each second hole portion 104. The third hole portion 105 can extend, for example, in a third direction (the up-and-down direction in the drawing), and the third direction is parallel to the height direction of the first base 101 and orthogonal to the first direction and the second direction respectively. In order to easily connect the second hole portion 104 and the first hole portion 103, the third hole portion 105 is formed at a position on the upper surface of the first base 101 near the right side. The diameter and depth of the third hole portion 105 are not particularly limited. For example, one end in the axial direction of the third hole portion 105 penetrates the wall portion of the first hole portion 103 to communicate with the first hole portion 103. In addition, one end in the axial direction of the second hole portion 104 penetrates the wall portion of the third hole portion 105 to communicate with the third hole portion 105. That is, the depth of the third hole portion 105 extending downward only needs to be able to penetrate the wall portion of the first hole portion 103. In addition, the depth of the second hole portion 104 extending in the rightward direction only needs to be able to penetrate the wall portion of the third hole portion 105. Thereby, the lower end portion in the axial direction of the third hole portion 105 communicates with the first hole portion 103, and the right end portion in the axial direction of the second hole portion 104 communicates with the third hole portion 105 at the wall portion of the third hole portion 105. By making the lower end portion of the third hole portion 105 communicate with the first hole portion 103 and the wall portion of the third hole portion 105 communicate with the right end portion of the second hole portion 104, it is possible to easily block or open the lower end portion of the third hole portion 105 and / or the right end portion of the second hole portion 104 by adjusting the switch 102, and thus it is possible to easily block or open between the first hole portion 103 and the third hole portion 105.

[0048] Continue to refer to Figure 6 , and refer subsidiarily to Figure 2 , Figure 3 , the fourth hole portion 106 can also extend in the third direction, for example. Specifically, the fourth hole portion 106 can be appropriately set according to the positions of the suction holes of the suction end 124 of the vacuum generator 121. In order to easily install the second trachea joint 112 for connecting the trachea 222, the fourth hole portion 106 can be formed, for example, from the middle in the substantially left-right direction on the upper surface of the first base 101 and extending downward. The fourth hole portion 106 can be a threaded hole, for example.

[0049] Continue to refer to Figure 6 , and refer subsidiarily to Figures 2 to 5, in addition, in some embodiments, for the convenience of exhausting air from the vacuum generator 121, a plurality of air outlet parts 110 may be formed in the first base 101. Each air outlet part 110 is respectively communicated with each second hole part 104. And when the vacuum generator 121 is disposed in the second hole part 104, each air outlet part 110 is respectively communicated with the air outlet end 123 of each vacuum generator 121. Specifically, in some embodiments, the air outlet part 110 includes a plurality of air outlet holes 113, and each air outlet hole 113 is respectively communicated with the second hole part 104 corresponding to the air outlet part 110. The air outlet holes 113 may be formed in the upper surface of the first base 101 and face the air outlet end 123 of the vacuum generator 121. Thus, it is convenient for exhausting air from the vacuum generator 121. In addition, by providing the air outlet part 110, the left end of the second hole part 104 can also be blocked by the second plug 111 to prevent the vacuum generator 121 from being exposed outside.

[0050] Continue to refer to Figure 6 , as described above, each adjustment switch 102 is respectively provided with a first end 108 received in the third hole part 105. The first end 108 can be fed axially along the third hole part 105 to block or open the connection between the first hole part 103 and the second hole part 104. Specifically, for example, the adjustment switch 102 further includes a knob part 114 exposed outside the first base 101, and the knob part 114 and the first end 108 are integrally formed. By holding the knob part 114 to rotate or push the adjustment switch 102, the first end 108 can be fed in the third hole part 105.

[0051] In some embodiments, in order to easily and reliably disconnect the first hole part 103 and the second hole part 104 corresponding to the adjustment switch 102, a tapered part 115 is provided at the distal end (the lower end part in the drawing) of the first end 108. The tapered part 115 can abut against the position of the wall of the first hole part 103 communicated with the third hole part 105. By providing the tapered part 115, the adjustment switch 102 can be adaptively adjusted according to the lower end part of the third hole part 105, so as to reliably block the connection position between the lower end part of the third hole part 105 and the wall of the first hole part 103.

[0052] In addition, in some embodiments, at least a portion of the wall of the third hole portion 105 is provided with a first internal thread 116, and the first end portion 108 is provided with a first external thread 117 that engages with the first internal thread 116. Specifically, by providing the first internal thread 116 and the first external thread 117, the first end portion 108 can be easily fed into the third hole portion 105 by rotating the knob portion 114 of the adjustment switch 102. When it is necessary to open or close the vacuum generator 121, it is only necessary to rotate the knob portion 114 of the adjustment switch 102. The first internal thread 116 can be provided, for example, at the lower end portion of the third hole portion 105. Correspondingly, the first external thread 117 is also provided at the lower end portion of the first end portion 108. Thus, while the first internal thread 116 serves as a thread for feeding the first end portion 108 of the adjustment switch 102, it can also seal the position where the lower end portion of the third hole portion 105 communicates with the wall of the first hole portion 103. That is, by the double sealing of the engagement of the tapered portion 115, the first internal thread 116, and the first external thread 117, the reliability of the first end portion 108 of the adjustment switch 102 in plugging the lower end portion of the third hole portion 105 can be greatly improved.

[0053] In some embodiments, in order to limit the feeding stroke of the adjustment switch 102 and prevent the adjustment switch 102 from falling off, a plurality of fifth hole portions 118 are further formed in the first base 101, and each of the fifth hole portions 118 communicates with each of the third hole portions 105. A restricting member 119 is respectively accommodated in each of the fifth hole portions 118. The end portion (left end portion) of the restricting member 119 extends into the third hole portion 105 and restricts the feeding stroke of the adjustment switch 102 in the third hole portion 105 in the direction of opening between the first hole portion 103 and the second hole portion 104. Specifically, the fifth hole portion 118 is formed, for example, on the right surface of the first base 101, and the position of the fifth hole portion 118 is appropriately determined according to the position of the third hole portion 105. The fifth hole portion 118 can be a threaded hole, for example, and the restricting member 119 can be a screw member, for example. In this embodiment, the direction in which the adjustment switch 102 opens between the first hole portion 103 and the second hole portion 104 refers to the upward direction. That is, in this embodiment, when the first end portion 108 of the adjustment switch 102 feeds downward, the lower end portion of the third hole portion 105 is plugged, thereby plugging the first hole portion 103 and the second hole portion 104. When the first end portion 108 of the adjustment switch 102 feeds upward, the lower end portion of the third hole portion 105 is opened, thereby communicating the first hole portion 103 and the second hole portion 104.

[0054] Further, in some embodiments, in order to limit the feeding stroke of the adjustment switch 102, the first end portion 108 of the adjustment switch 102 may be provided with an annular first groove portion 120, and the end portion of the limiting member 119 extends into the first groove portion 120. Specifically, the diameter of the first groove portion 120 is smaller than the pitch diameter of the first external thread 117. After the first end portion 108 is inserted into the third hole portion 105 and the lower end portion of the first end portion 108 provided with the first external thread 117 crosses the fifth hole portion 118, the position of the first groove portion 120 is opposite to the position of the fifth hole portion 118. Thus, when the adjustment switch 102 feeds in the upward direction, the lower end portion of the first end portion 108 is restricted by the left end portion of the limiting member 119, so that the feeding stroke of the adjustment switch 102 in the upward direction can be limited.

[0055] [Buffer device 200]

[0056] Figure 7 Yes, it is a schematic diagram of the buffer device 200. Figure 8 Yes Figure 7 The sectional view taken along line B-B in Figure 9 It is a schematic diagram of another embodiment of the buffer device 200. Figure 10 It is a schematic diagram of still another embodiment of the buffer device 200. Figure 11 Yes Figure 7 The sectional view taken along line C-C in

[0057] Refer to Figures 7 to 11 As described above, each buffer device 200 respectively includes: a cylindrical second base 201 and a sliding rod 203. The second base 201 and the sliding rod 203 together form an air passage 221. Specifically, the buffer device 200 includes: a cylindrical second base 201, a third air pipe joint 202, a sliding rod 203, and an elastic member 204. The air passage 221 includes a sixth hole portion 205 axially penetrating the second base 201 and a seventh hole portion 206 axially penetrating the sliding rod 203, and the sixth hole portion 205 and the seventh hole portion 206 are communicated. The third air pipe joint 202 is sealingly installed at one axial end of the sixth hole portion 205. The third air pipe joint 202 is connected to the vacuum generator 121 through an air pipe 222 and via the fourth hole portion 106 of the first base 101. At least a part of the sliding rod 203 is accommodated in the sixth hole portion 205 and is axially slidable relative to the sixth hole portion 205. When the sliding rod 203 slides in the direction away from the third air pipe joint 202, a part of the sliding rod 203 passes through the other axial end of the sixth hole portion 205 and is exposed outside the second base 201. The elastic member 204 abuts against the sliding rod 203 at one end in a compressed state and abuts against the second base 201 at the other end.

[0058] In the buffer device 200 of the present embodiment, the type of the third air pipe joint 202 is not particularly limited, and examples include: straight-through joints, male quick-connect joints, or female quick-connect joints. In order to make the overall structure of the buffer device 200 more compact and facilitate the insertion and removal of the air pipe 222, preferably, the third air pipe joint 202 is selected as the male quick-connect joint.

[0059] As the elastic member 204, a well-known compression spring can be used, for example. As long as the elastic member 204 can abut against the sliding rod 203 at one end in a compressed state and abut against the second base 201 at the other end, its installation method is not particularly limited. For example, the elastic member 204 can be arranged outside the second base 201 and sleeved on the sliding rod 203, abutting against the sliding rod 203 at one end and abutting against the second base 201 at the other end. In addition, the elastic member 204 can also be accommodated in the sixth hole portion 205 (refer to Figures 8 to 10 ), abutting against the sliding rod 203 at one end and abutting against the second base 201 at the other end.

[0060] Continuing to refer to Figure 8 , in some embodiments, in order to connect the third air pipe joint 202 and the seventh hole portion 206 so that the vacuum chuck 300 can be connected to the vacuum generator 121 through the sliding rod 203 and the air pipe 222, the third air pipe joint 202 and the seventh hole portion 206 are connected through the sixth hole portion 205. Specifically, for example, the sliding rod 203 slides along the sixth hole portion 205, and one end in the axial direction of the seventh hole portion 206 is accommodated in the sixth hole portion 205, thereby being connected to the sixth hole portion 205. A thread is provided at one end in the axial direction of the sixth hole portion 205, and the third air pipe joint 202 is directly tightened to one end in the axial direction of the sixth hole portion 205 through this thread. In order to improve the sealing performance of the installation position of the third air pipe joint 202, the third air pipe joint 202 can be locked to one end in the axial direction of the sixth hole portion 205 by means of applying sealant, winding sealing tape, etc. Thereby, the sealing performance of the installation position of the third air pipe joint 202 can be achieved.

[0061] In addition, in order to achieve the sealing performance between the sixth hole portion 205 and the sliding rod 203, a second sealing ring 207 can be provided between the sixth hole portion 205 and the sliding rod 203. As the second sealing ring 207, an O-ring made of rubber, etc. can be cited. The second sealing ring 207 can be sleeved on the sliding rod 203. Thereby, the sealing performance of the region between the sixth hole portion 205 connecting the third air pipe joint 202 and the seventh hole portion 206 of the sliding rod 203 can be achieved.

[0062] Continuing to refer to Figure 9, in addition, in some embodiments, in order to connect the third tracheal joint 202 and the seventh hole portion 206, a first extension portion 209 extending axially may also be provided at the end of the first mounting end 208 of the third tracheal joint 202. The first extension portion 209 is inserted into the seventh hole portion 206, and a third sealing ring 210 is provided between the first extension portion 209 and the seventh hole portion 206. Specifically, for example, the seventh hole portion 206 may be a circular hole. The outer periphery of the first extension portion 209 is also cylindrical. The third sealing ring 210 may be selected, for example, an O-ring rubber sealing ring, etc. The third sealing ring 210 may be embedded in the seventh hole portion 206 or sleeved on the first extension portion 209. The first extension portion 209 is axially penetrated and communicated with the third tracheal joint 202. Thus, the sliding rod 203 and the third tracheal joint 202 can be directly connected and isolated from the sixth hole portion 205. Through this connection method, the sixth hole portion 205 can be used only as a hole for guiding the sliding rod 203. Since there is no need to provide a sealing ring between the sixth hole portion 205 and the sliding rod 203, the swing of the sliding rod 203 relative to the second base 201 can be suppressed, and the sliding accuracy of the sliding rod 203 relative to the sixth hole portion 205 can be improved.

[0063] Continue to refer to Figure 10 , in some embodiments, the buffer device 200 may further include a mounting seat 211 that is axially penetrated. The mounting seat 211 is mounted to one end of the sixth hole portion 205 in the axial direction, and the third tracheal joint 202 is sealingly mounted to the mounting seat 211. In addition, in order to improve the versatility of parts and reduce the cost of the buffer device 200, a second extension portion 213 extending axially is provided at the second mounting end portion 212 of the mounting seat 211. The second extension portion 213 is inserted into the seventh hole portion 206, and a third seal 214 is provided between the second extension portion 213 and the seventh hole portion 206. Specifically, since the third tracheal joint 202 is usually a standard part, in order to directly connect the seventh hole portion 206 of the sliding rod 203 and the third tracheal joint 202 and provide the first extension portion 209 at one end of the third tracheal joint 202, the processing cost of the third tracheal joint 202 may be increased. Therefore, in this embodiment, by providing the mounting seat 211 and connecting the second extension portion 213 of the mounting seat 211 to the sliding rod 203 and the third tracheal joint 202, while ensuring that the seventh hole portion 206 of the sliding rod 203 and the third tracheal joint 202 are isolated from the sixth hole portion 205, a commercially available third tracheal joint 202 can also be used. Therefore, the versatility of the third tracheal joint 202 can be improved, and the cost of the buffer device 200 can be reduced.

[0064] Continue to refer to Figure 11, in some embodiments, in order to suppress the rotation of the sliding rod 203 relative to the second base 201, thereby improving the accuracy of the vacuum chuck 300 for adsorbing electronic components, a restricting portion 215 is provided on the inner wall of the sixth hole portion 205. A polygonal portion 216 is provided on the portion of the sliding rod 203 received in the sixth hole portion 205. The polygonal portion 216 is circumferentially restricted by the restricting portion 215 within the sixth hole portion 205. Specifically, the restricting portion 215 may include a plurality of second groove portions 217 formed on the inner wall. The plurality of groove portions 217 are circumferentially spaced apart along the inner wall of the sixth hole portion 205, and each second groove portion 217 extends axially along the sixth hole portion 205. The corner portions 218 of the polygonal portion 216 are respectively received in the second groove portions 217 and can slide along the second groove portions 217. By providing the second groove portions 217 as the restricting portion 215 on the inner wall of the sixth hole portion 205 and providing the polygonal portion 216 on the portion of the sliding rod 203 received in the sixth hole portion 205, the rotation of the polygonal portion 216 is restricted by the restricting portion 215. Thus, the rotation of the sliding rod 203 relative to the second base 201 can be suppressed. When angular accuracy is required for the vacuum chuck 300 mounted on the sliding rod 203, the angular accuracy of the assembly and / or operation of the vacuum chuck 300 can be improved.

[0065] The shape of the cross-section of the sixth hole portion 205 is not particularly limited as long as it can accommodate the polygonal portion 216 and allow the corner portions 218 of the polygonal portion 216 to be received in the second groove portions 217. For example, preferably, the cross-section of the sixth hole portion 205 is circular, and the plurality of second groove portions 217 are evenly distributed along the circumference of the sixth hole portion 205. More preferably, the cross-section of the polygonal portion 216 may be a regular hexagon shape. There are six second groove portions 217, which are evenly distributed along the circumference of the sixth hole portion 205. The diameter R1 of the sixth hole portion 205 is slightly smaller than the diameter R2 of the polygonal portion 216, that is, the regular hexagon (for example, about 0.2 mm smaller). In addition, the maximum distance S1 between two second groove portions 217 opposite to each other with the sixth hole portion 205 as the center is slightly larger than the diameter of the regular hexagon (for example, about 0.2 mm larger). Thus, the polygonal portion 216 can be received in the sixth hole portion 205 in such a manner that the corner portions 218 are stuck in the second groove portions 217.

[0066] In addition, although the regular hexagon-shaped polygonal portion 216 is taken as an example for illustration above, it is not limited thereto. As long as the length of the line connecting the two corner portions 218 of the polygonal portion 216 relative to the center (i.e., the diameter R2) is slightly larger than the diameter R1 of the sixth hole portion 205, and the corner portions 218 of these polygonal portions 216 can be received in the second groove portions 217, the cross-section of the polygonal portion 216 can also be selected, for example, as a square shape or a regular pentagon shape, etc.

[0067] Continue to refer to Figures 8 to 10, in some embodiments, in order to further guide the sliding rod 203 and inhibit the wear of the sliding rod 203, a bushing 219 is embedded at the other end of the sixth hole portion 205. A cylindrical portion 220 is provided on the sliding rod 203, and the cylindrical portion 220 slides within the bushing 219. By embedding the bushing 219 at one end of the sixth hole portion 205, the sliding rod 203 can be guided with higher precision, and the swinging of the sliding rod 203 relative to the second base 201 can be inhibited, thereby improving the sliding precision of the sliding rod 203 and inhibiting the wear of the sliding rod 203.

[0068] As the bushing 219, for example, a bushing made of a plastic material such as PEEK or acetal can be selected, or an oil-free bushing can also be used. In addition, the bushing 219 can be fixed to the other end in the axial direction of the sixth hole portion 205 by means of gluing or the like. Additionally, in order to improve the sliding smoothness of the sliding rod 203 relative to the second base 201, a high-temperature, low-viscosity grease or the like can also be injected into the sixth hole portion 205 and / or the bushing 219.

[0069] [Vacuum chuck 300]

[0070] Figure 12 is Figure 1 the bottom view of the vacuum chuck 300, Figure 13 is Figure 12 the cross-sectional view taken at D-D in Figure 12 / 13, and with reference to Figure 1 , as described above, each vacuum chuck 300 respectively has: a third base 301 and an adsorbing member 302 provided on the third base 301. Specifically, an eighth hole portion 303 for communicating with the air passage 221 of the buffer device 200 is provided on one side of the third base 301. A plurality of ninth hole portions 304 are provided on the other side of the third base 301, and the ninth hole portions 304 communicate with the eighth hole portion 303. A plurality of tenth hole portions 305 are provided on the adsorbing member 302, and each of the tenth hole portions 305 is respectively opposite to each of the ninth hole portions 304 one by one.

[0071] The third base 301 can be processed from, for example, aluminum alloy. The shape of the third base 301 is not particularly limited, and for example, a cube shape, a cuboid shape, or a cylindrical shape can be selected. The eighth hole portion 303 can be provided on the side of the third base 301 connected to the sliding rod 203, and the eighth hole portion 303 is connected to the adsorption end 124 of the vacuum generator 121 through the air passage 221 of the buffer device 200, the fourth hole portion 106 of the first base 101.

[0072] In some embodiments, the material of the adsorbing member 302 is foamed sponge material. Specifically, in order to increase the softness and elasticity of the adsorbing member 302, the foamed sponge material can be selected for the adsorbing member 302. As the manufacturing methods of the foamed sponge material, for example, one-step foaming method, prepolymer foaming method, semi-prepolymer foaming method, and manual foaming method can be cited, etc.

[0073] In addition, as the sponge material used for the adsorbing member 302, for example, fine sponge (having advantages such as uniform cell structure, tensile property, extensibility, etc.), high resilience sponge, etc. can also be selected. As the high resilience sponge, for example, rubber cotton can be cited.

[0074] The minimum value of the Shore hardness A of the adsorbing member 302 is not particularly limited, and it can be appropriately selected according to the weight of the fragile component to be adsorbed. In some embodiments, the Shore hardness A of the adsorbing member 302 is 28 degrees or more and 32 degrees or less. Specifically, for example, the Shore hardness A of the sponge material of the adsorbing member 302 can be 30 degrees. By selecting the sponge material with a Shore hardness A of 30 degrees, while maintaining sufficient softness and resilience, the strength of the adsorbing member 302 can also be taken into account to prevent the excessive deformation of the adsorbing member 302. Thereby, the reliability of the vacuum chuck 300 can be improved.

[0075] In some embodiments, the thickness of the adsorbing member 302 (the thickness in the up and down direction in the drawing) is 12 mm or less. That is, in the present embodiment, the thickness of the adsorbing member 302 can be 5 mm or more and 12 mm or less. Thereby, the compression stroke of the adsorbing member 302 can be within a certain range, preventing the reduction of reliability due to the excessive compression stroke of the adsorbing member 302.

[0076] In some embodiments, the adsorbing member 302 is attached to the lower part of the third base 301 through an adhesive. For example, a double-sided tape as the adhesive is attached to the upper surface of the adsorbing member 302. The adsorbing member 302 is attached to the lower part of the third base 301 through this double-sided tape. Thereby, the adsorbing member 302 can be reliably attached to the lower part of the third base 301, and the replacement of the adsorbing member 302 can be facilitated.

[0077] For the various specific technical features described in the above specific embodiments, they can be combined in any way without contradiction. For the sake of unnecessary repetition, the present embodiment does not separately describe various possible combination methods.

[0078] The above embodiments are only used to illustrate the technical solutions of the present embodiment and are not intended to limit them. Any modification or equivalent replacement that does not depart from the scope of the present embodiment should be included in the technical solutions of the present embodiment.

Claims

1. Vacuum adsorption system for electronic components, characterized in that, Comprising: A vacuum generating part, the vacuum generating part having: a first base, a plurality of vacuum generators, and a plurality of adjustment switches, wherein each of the vacuum generators is respectively accommodated in the first base and is independently blocked or opened through the adjustment switch; A plurality of buffer devices, each of the buffer devices having: a cylindrical second base and a sliding rod, one axial end of the sliding rod is accommodated in the second base and is axially slidable relative to the second base, the second base and the sliding rod together form an air path channel, and each of the second bases and each of the vacuum generators corresponds one by one and is connected through a trachea; A plurality of vacuum suction cups, each of the vacuum suction cups and each of the buffer devices corresponds one by one, each of the vacuum suction cups having: a third base and a suction attachment provided on the third base, the third base is mounted to the other axial end of the sliding rod and is in communication with the air path channel, the material of the suction attachment is a sponge material with a Shore hardness A of less than 40 degrees, and in the case of not being pressed, the thickness of the suction attachment is 5 mm or more; The first base is provided with: A first hole portion for connecting to an external high-pressure air source; A plurality of second hole portions, the vacuum generators are respectively accommodated in the second hole portions; A plurality of third hole portions, each of the third hole portions respectively communicates each of the second hole portions with the first hole portion; A plurality of fourth hole portions for communicating with the air path channel, each of the fourth hole portions respectively communicates with each of the second hole portions, and in the state where the vacuum generator is accommodated in the second hole portion, each of the fourth hole portions is respectively opposite to the adsorption end of each of the vacuum generators; Each of the adjustment switches is respectively provided with a first end portion accommodated in the third hole portion, and the first end portion can be fed axially along the third hole portion to block or open between the first hole portion and the second hole portion; One side of the third base is provided with an eighth hole portion for communicating with the air path channel, and the other side of the third base is provided with a plurality of ninth hole portions, and the ninth hole portions are in communication with the eighth hole portion; A plurality of tenth hole portions are provided on the suction attachment, and each of the tenth hole portions is respectively opposite to each of the ninth hole portions one by one.

2. The vacuum adsorption system for electronic components according to claim 1, characterized in that, The first hole portion extends in a first direction, and the first direction is parallel to the length direction of the first base; The second hole portion extends in a second direction, and the second direction is parallel to the width direction of the first base and is orthogonal to the first direction; The third hole portion extends in a third direction, and the third direction is parallel to the height direction of the first base and is respectively orthogonal to the first direction and the second direction; The fourth hole portion extends in the third direction.

3. The vacuum adsorption system for electronic components according to claim 1 or 2, characterized in that, A plurality of air outlet portions are further provided on the first base, each of the air outlet portions respectively communicates with each of the second hole portions, and in the state where the vacuum generator is accommodated in the second hole portion, each of the air outlet portions is respectively in communication with the air outlet end of each of the vacuum generators.

4. The vacuum adsorption system for electronic components according to claim 1, characterized in that, The air path channel includes a sixth hole portion axially penetrating the second base and a seventh hole portion axially penetrating the sliding rod, and the sixth hole portion and the seventh hole portion are in communication; One end of the sixth hole part in the axial direction is sealingly installed with a third air pipe joint, and the third air pipe joint is connected to the vacuum generator through the air pipe; The sliding rod is at least partially accommodated in the sixth hole part and is axially slidable relative to the sixth hole part; When the sliding rod slides in a direction away from the third air pipe joint, a part of the sliding rod passes through the other end of the sixth hole part in the axial direction and is exposed outside the second base; The buffer device further includes an elastic member, and the elastic member abuts against the sliding rod at one end in a compressed state and abuts against the second base at the other end.

5. The vacuum adsorption system for electronic components according to claim 4, characterized in that, A limiting part is arranged on the inner wall of the sixth hole part, and a polygonal part is arranged on the part of the sliding rod accommodated in the sixth hole part, and the polygonal part is circumferentially limited by the limiting part in the sixth hole part.

6. The vacuum adsorption system for electronic components according to claim 5, characterized in that, The limiting part includes a plurality of second groove parts opened on the inner wall, the plurality of second groove parts are circumferentially spaced apart along the inner wall, and each of the second groove parts extends along the axial direction of the sixth hole part; The corner parts of the polygonal part are respectively accommodated in the second groove parts and can slide along the second groove parts.

7. The vacuum adsorption system for electronic components according to claim 1, characterized in that, The material of the adsorbing part is a foamed sponge material, and the Shore hardness A of the adsorbing part is above 28 degrees and below 32 degrees.

8. The vacuum adsorption system for electronic components according to claim 7, characterized in that, The thickness of the adsorbing part is 12 mm or less.

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