Patch picking and placing device for STM patch processing

Abstract

The invention provides a patch pick-and-place device for STM patch processing. The patch pick-and-place device structurally comprises a connecting block, a transverse plate, a limiting body, a sliding rail, a moving block, an air cylinder and a pick-and-place structure, the connecting block and the center of the back of the transverse plate are integrated, the surface of the transverse plate determines the position of the sliding rail through the limiting body, and the moving block is limited; after the pick-and-place structure is improved, the height of the suction nozzle structure can be vertically adjusted by combining the extension column of the air pipe with the electric sliding block, so that the suction nozzle structure can be ensured to keep a proper distance from an element on a chip mounter for corner alignment; then, the corners of the element can be effectively aligned and identified through the infrared calibration lens at the corner position of the protection pad, and finally, the element is accurately picked up by combining a flexible ring and vacuum negative pressure suction of an air cylinder through a vent groove, so that the center of the element can be aligned during picking up, and the effect of accurately aligning the center of a PCB (Printed Circuit Board) in the subsequent process is improved; therefore, the use intensity of the pick-and-place structure can be improved, and the center accuracy of the patch can be improved.

Description

Technical Field

[0001] This invention relates to the field of chip mounter technology, and more specifically to a chip mounter pick-and-place device for STM chip mount processing. Background Technology

[0002] SMT (Surface Mount Technology) assembly involves a series of highly automated devices that precisely place tiny, leadless electronic components (such as chips, resistors, capacitors, and inductors) onto PCB pads. The components are then heated in a reflow oven, where solder paste melts and solidifies, firmly bonding them to the PCB. In this process, electronic components can be picked up and placed onto PCB pads using pick-and-place devices, replacing the inefficiencies of manual handling and thus effectively improving SMT assembly efficiency. In summary, the inventors have found that existing pick-and-place devices have the following main drawbacks: Because current pick-and-place devices typically use a component camera to identify the location of electronic components during the negative pressure pick-up process, and then perform negative pressure pick-up by descending, the component camera cannot accurately align the nozzle with the center point of the component surface during pick-up. Therefore, deviations in the pick-up position can easily lead to significant positional deviations when subsequently bonding to the PCB pads, thus reducing the overall PCB quality and the durability of the pick-and-place device. Summary of the Invention

[0003] The technical solution adopted by the present invention to achieve the technical objective is: a chip pick-and-place device for STM chip processing, the structure of which includes: a connecting block, a horizontal plate, a limiting body, a slide rail, a moving block, a cylinder, and a pick-and-place structure. The connecting block is integrated with the center of the back of the horizontal plate, and the surface of the horizontal plate is fixed by the limiting body to determine the position of the slide rail and limit the moving block. A cylinder is provided on the surface of the moving block, and the lower end of the cylinder is connected to the pick-and-place structure.

[0004] As a further improvement of the present invention, the pick-up and drop structure is provided with a fixed end, the lower end of which is integrated with the air tube, an extension column is mounted on the outside of the air tube, an electric slider is provided at the outer edge of the extension column, and a suction nozzle structure is connected to the lower end of the extension column and a balance block is mounted on its surface.

[0005] As a further improvement of the present invention, the nozzle structure is also provided with a protective pad, the surface of which is connected to a bracket and the position of the flexible ring is determined by the bracket. The flexible ring has an air groove inside, and a positioning rod is connected to the edge of the bracket to determine the position of the positioning block. An infrared calibration lens is mounted inside the positioning block.

[0006] As a further improvement of the present invention, the air tube is connected to the cylinder through the fixed end of the pick-and-place structure, and the air is drawn in by the vacuum of the cylinder so that the ventilation groove of the extended bottom suction nozzle structure can adsorb the component, thereby allowing the component to contact the flexible ring. During the process, the infrared calibration lens of the suction nozzle structure is aligned with the edge of the component, and then the cylinder is operated. At the same time, the balance block of the suction nozzle structure ensures the parallelism of the protective pad, and the extension column combined with the electric slider slides vertically on the outer surface of the air tube.

[0007] As a further improvement of the present invention, the connecting block is perpendicular to the horizontal plate and the position of the moving block is determined by the two limiting bodies covering the edge of the slide rail. The moving block drives the cylinder and the pick-and-place structure to move laterally in a cyclic manner by moving at the position of the slide rail.

[0008] As a further improvement of the present invention, the fixed end is disposed at the top of the trachea and the trachea is set in a vertical orientation and the outside is in contact with the inner wall of the extension column. The extension column and the mouthpiece structure are perpendicular to each other and are restrained by the edge of the balance block to maintain a "T" shape.

[0009] As a further improvement of the present invention, the protective pad restrains the edge of the flexible ring through the bracket, the vent groove of the flexible ring is connected to the cylinder through the air pipe, the positioning rod is set in a straight line and is inserted and fixedly connected to the bracket, and the positioning rod determines the position of the infrared calibration lens through the positioning block, so that the infrared calibration lens is distributed at the corner of the protective pad.

[0010] As a further improvement of the present invention, the fixed end is provided with an insert block, the insert block and the rubber block are integrated, one end of the rubber block is connected to an adsorption frame, the adsorption frame is equipped with a contact layer and has a cavity that communicates with the inside of the cylinder.

[0011] As a further improvement of the present invention, the insert has multiple grooves and is embedded in the inner wall of the cylinder by the rebound of the rubber block. The adsorption frame is parallel to the inner side of the cylinder, the contact layer is parallel and the gas in the cylinder is allowed to circulate through the cavity.

[0012] As a further improvement of the present invention, a locking block is also provided at the cavity position. The locking block is located at the edge of the clamping frame, and an intercepting net is provided inside the clamping frame.

[0013] As a further improvement of the present invention, the locking block is provided in four sets at the edge of the clamping frame. The clamping frame is square in shape to cover and limit the edge of the interception net. The interception net communicates with the cavity and is parallel to the inside of the cylinder.

[0014] As a further improvement of the present invention, the balance block is provided with an assembly block, the assembly block is disposed on the surface of the block body and a clamping block is connected to the side of the block body, an anti-deviation block is connected at the edge of the clamping block, and a clamping ring is included in the spacing between the anti-deviation blocks.

[0015] As a further improvement of the present invention, the assembly block has two blocks on the block body, and the clamping block of the block body is in the form of a horizontal protrusion and carries an anti-deviation block and a clamping ring inserted into the extension column.

[0016] As a further improvement of the present invention, the clamping ring is also provided with an arc-shaped ring body, the lower end of the arc-shaped ring body is connected to a central block and the surface of the central block is equipped with a protrusion, and overlapping blocks are also connected at both ends of the arc-shaped ring body and are also equipped with locking bolts.

[0017] As a further improvement of the present invention, the arc-shaped ring is semi-circular in shape, and the central block and the protrusion of the arc-shaped ring are both solid. The overlapping block will cover the end position of the anti-deviation block, and the locking bolt of the overlapping block will be locked into the anti-deviation block in a vertical position.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention improves the pick-and-place structure by using an extension column of the air tube in conjunction with an electric slider to vertically adjust the height of the nozzle structure. This ensures that the nozzle structure maintains a suitable distance from the components on the pick-and-place machine for corner alignment. Then, an infrared calibration lens at the corner of the protective pad effectively aligns and identifies the corners of the components. Finally, the air vent, combined with the flexible ring and the vacuum negative pressure of the cylinder, precisely picks up the components, ensuring that they are aligned with the center of the components during pickup. This improves the subsequent accuracy of alignment with the PCB center during placement, thereby increasing the strength of the pick-and-place structure and improving the centering accuracy of the placement.

[0019] 2. This invention improves upon the fixed end of the upper part of the air tube by using a combination of insert and rubber blocks to effectively and stably embed itself in the connection position of the cylinder. At the same time, the magnetic attraction of the adsorption frame enhances the connection strength with the cylinder, preventing instability and automatic detachment during vacuum negative pressure operation. Furthermore, the interception net set in the cavity position prevents external impurities and some small solid hardware from entering the cylinder during vacuum negative pressure suction, thereby improving the stability of vacuum negative pressure suction and ensuring the stable operation of the cylinder.

[0020] 3. The present invention improves the balance block by using the assembly blocks on the block to enhance the balance of the interlocking connection with the upper layer of the protective pad. Then, the interlocking of the side clamping blocks can effectively enhance the edge restraint of the extension column. At the same time, the cooperation of the anti-deviation block can effectively reinforce the edge of the air tube inside the extension column in a parallel and stable state. This improves the connection firmness between the overall nozzle structure and the air tube and the bottom of the extension column, preventing it from falling off during operation. Attached Figure Description

[0021] Figure 1This is a schematic diagram of a chip pick-and-place device for STM chip processing.

[0022] Figure 2 This is a three-dimensional structural diagram of an improved pick-and-place structure.

[0023] Figure 3 This is a top-view structural diagram of an improved suction nozzle design.

[0024] Figure 4 This is a top-view structural diagram of an improved fixed-end design.

[0025] Figure 5 This is a cross-sectional structural diagram of a component located in a cavity.

[0026] Figure 6 This is a top-view structural diagram of an improved balance block.

[0027] Figure 7 This is a cross-sectional structural diagram of an improved clamping ring.

[0028] In the diagram: Connecting block-1, Horizontal plate-2, Limiting body-3, Slide rail-4, Moving block-5, Cylinder-6, Pick-up and drop structure-7; Fixed end-71, air tube-72, extension column-73, electric slider-74, suction nozzle structure-75, balance block-76; Protective pad-751, bracket-752, flexible ring-753, ventilation groove-754, positioning rod-755, positioning block-756, infrared calibration lens-757; Insert block-711, rubber block-712, adsorption frame-713, contact layer-714, cavity-715; Locking block-7151, clamping frame-7152, interception net-7153; Assembly block-761, block-762, clamping block-763, anti-deviation block-764, clamping ring-765; Arc-shaped ring - 7651, center block - 7652, protrusion - 7653, overlapping block - 7654, locking bolt - 7655. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings: Example 1: Figures 1 to 5 As shown: This invention provides a chip pick-and-place device for STM chip assembly. Its structure includes: a connecting block 1, a horizontal plate 2, a limiting body 3, a slide rail 4, a moving block 5, a cylinder 6, and a pickup and placement structure 7. The connecting block 1 and the center of the back of the horizontal plate 2 are integrated, and the surface of the horizontal plate 2 determines the position of the slide rail 4 and limits the moving block 5 through the limiting body 3. The surface of the moving block 5 is provided with a cylinder 6, and the lower end of the cylinder 6 is connected to the pickup and placement structure 7.

[0030] The pick-and-place structure 7 is provided with a fixed end 71. The lower end of the fixed end 71 is integrated with the air tube 72. An extension column 73 is mounted on the outside of the air tube 72. An electric slider 74 is provided at the outer edge of the extension column 73. The lower end of the extension column 73 is also connected to a suction nozzle structure 75 and a balance block 76 is mounted on its surface.

[0031] The suction nozzle structure 75 is also provided with a protective pad 751. A bracket 752 is connected to the surface of the protective pad 751 and the position of the flexible ring 753 is determined by the bracket 752. A ventilation groove 754 is opened inside the flexible ring 753. A positioning rod 755 is also connected to the edge of the bracket 752 to determine the position of the positioning block 756. An infrared calibration lens 757 is mounted inside the positioning block 756.

[0032] In this process, the air tube 72 is connected to the cylinder 6 through the fixed end 71 of the pick-and-place structure 7, and the vacuum suction of the cylinder 6 allows the air groove 754 of the suction nozzle structure 75 at the bottom of the extension column 73 to adsorb the component, thereby allowing the component to contact the flexible ring 753. During the process, the infrared calibration lens 757 of the suction nozzle structure 75 is aligned with the edge of the component, and then the cylinder 6 performs the operation. At the same time, the balance block 76 of the suction nozzle structure 75 ensures the parallelism of the protective pad 751, and the extension column 73, combined with the electric slider 74, slides vertically on the outer surface of the air tube 72.

[0033] The connecting block 1 is perpendicular to the horizontal plate 2 and the edge of the slide rail 4 is covered by two limiting bodies 3 to determine the position of the moving block 5. The moving block 5 drives the cylinder 6 and the pick-and-place structure 7 to move laterally in a circular motion by moving at the position of the slide rail 4.

[0034] The fixed end 71 is located at the top of the air tube 72, and the air tube 72 is set in a vertical orientation and its exterior is in contact with the inner wall of the extension column 73. The extension column 73 and the mouthpiece structure 75 are perpendicular to each other and are restrained by the edge of the balance block 76 to maintain a "T" shape.

[0035] The protective pad 751 restrains the edge of the flexible ring 753 through the bracket 752. The ventilation groove 754 of the flexible ring 753 is connected to the cylinder 6 through the air pipe 72. The positioning rod 755 is set in a straight line and is inserted and fixedly connected to the bracket 752. The positioning rod 755 determines the position of the infrared calibration lens 757 through the positioning block 756, so that the infrared calibration lens 757 is distributed at the corner of the protective pad 751.

[0036] The fixed end 71 is provided with an insert 711, which is integrated with the rubber block 712. One end of the rubber block 712 is connected to an adsorption frame 713. The adsorption frame 713 is equipped with a contact layer 714 and has a cavity 715 that communicates with the inside of the cylinder 6.

[0037] The insert 711 has multiple grooves and is embedded in the inner wall of the cylinder 6 by the rebound of the rubber block 712. The adsorption frame 713 is parallel to the inner side of the cylinder 6. The contact layer 714 is parallel and allows gas to flow through the cylinder 6 through the cavity 715.

[0038] A locking block 7151 is also provided at the cavity 715 position. The locking block 7151 is located at the edge of the clamping frame 7152, and an intercepting net 7153 is provided inside the clamping frame 7152.

[0039] The locking block 7151 has four sets at the edge of the clamping frame 7152. The clamping frame 7152 is square in shape and covers and limits the edge of the interception net 7153. The interception net 7153 communicates with the cavity 715 and is parallel to the inside of the cylinder 6.

[0040] The specific functions and operation procedures of this embodiment are as follows: In this invention, the SMT placement device allows the horizontal plate 2 carrying the limiting body 3 to be installed in the placement machine via the connecting block 1. The slide rail 4 within the limiting body 3 limits the movement block 5, enabling the movement block 5 to move the cylinder 6 and the placement structure 7 in conjunction with the placement machine's program operation. The placement structure 7 then uses the vacuum negative pressure suction characteristic of the cylinder 6 to pick up the electronic components transported by the placement machine. These components are then moved onto the PCB pads by the moving block 5, completing the placement operation. The air tube 72 of the placement structure 7 is fixedly connected to the lower end of the cylinder 6 via the fixed end 71. The extension column 73 of the air tube 72 is then connected to the electric slider 74. The height of the suction nozzle structure 75 is adjusted to maintain a safe distance from electronic components. During operation, the suction nozzle structure 75 achieves stable parallelism through edge restraint by the balance block 76. This ensures the stability of the infrared calibration lens 757 by the positioning block 756 at the corner of the protective pad 751 of the suction nozzle structure 75. With the infrared calibration lens 757, the lens is first aligned with the corner of the electronic component, ensuring the ventilation groove 754 at the center of the flexible ring 753 is precisely aligned with the center of the electronic component's surface. Then, the sliding of the electric slider 74 stabilizes the central vacuum suction of the electronic component, preventing subsequent release from the PCB pads due to suction point deviation. This improves the accuracy and stability of pick-and-place operations, indirectly enhancing the manufacturing quality of the PCB. Furthermore, the bracket 752 within the protective pad 751 further improves the center position accuracy of the flexible ring 753. Simultaneously, the flexible ring 753 helps prevent surface scratches during the pickup of electronic components. Finally, the side positioning rod 755 of the bracket 752 determines the position of the positioning block 756, ensuring that the four sets of infrared calibration lenses 757 remain at the corners, improving the accuracy of aligning the corners of electronic components. Subsequently, the fixed end 71 at the upper end of the air tube 72 is embedded into the cylinder 6 via the rubber block 712 and insert 711 on the edge of the suction frame 713, achieving rubber rebound and suction. The adsorption of the frame 713 prevents the air tube 72 from falling off during the operation of the cylinder 6. The contact 714 of the adsorption frame 713 forms a parallel effect with the inside of the cylinder 6, improving the stability of vacuum negative pressure suction. The cavity 715 at the center of the contact layer 714 allows gas to flow. During the process, the position of the interception net 7153 can be determined by the locking block 7151 and the clamping frame 7152. Therefore, when the gas passes through the position of the interception net 7153, it can intercept other solid impurities it carries, avoiding the subsequent difficulty in cleaning and damage to the cylinder 6 after entering the cylinder 6. This further improves the stability and strength of the pick-up and drop device.

[0041] Example 2: Figures 6 to 7 As shown: This invention provides a chip pick-and-place device for STM chip assembly. Its structure includes an assembly block 761 on the surface of the block 762 and a clamping block 763 connected to the side of the block 762. An anti-deviation block 764 is connected to the edge of the clamping block 763 and a clamping ring 765 is included in the spacing between the anti-deviation blocks 764.

[0042] The assembly block 761 has two parts on the block body 762, and the clamping block 763 of the block body 762 is in the form of a horizontal protrusion and carries an anti-deviation block 764 and a clamping ring 765 inserted into the extension column 73.

[0043] The clamping ring 765 is further provided with an arc-shaped ring body 7651. The lower end of the arc-shaped ring body 7651 is connected to a central block 7652 and the surface of the central block 7652 is equipped with a protrusion 7653. At both ends of the arc-shaped ring body 7651, there are also overlapping blocks 7654 and locking bolts 7655.

[0044] The arc-shaped ring 7651 is semi-circular in shape. The central block 7652 and the protrusion 7653 of the arc-shaped ring 7651 are both solid. The overlapping block 7654 will cover the end position of the anti-deviation block 764. The locking bolt 7655 of the overlapping block 7654 is locked into the anti-deviation block 764 in a vertical position.

[0045] The specific functions and operation procedures of this embodiment are as follows: In this invention, the block 762 of the balance block 76 can achieve a parallel connection effect by interlocking with the upper layer of the protective pad 751 through the assembly block 761. Then, the side clamping block 763 of the block 762 can be used with the anti-deviation block 764 to allow the clamping ring 765 to be embedded in the inner side of the extension column 73 in a straight line, so that the bottom edge of the air tube 72 can be clamped, ensuring the verticality of the air tube 72 and preventing tilting from affecting the stability of normal vacuum negative pressure suction. Subsequently, the arc-shaped ring 7651 of the clamping ring 765 can be vertically inserted into the clamping block 763 through the center block 7652 and the protrusion 7653, ensuring that the arc-shaped ring 7651 can maintain a stable connection with the clamping block 763. Then, the overlapping blocks 7654 on both sides and the locking bolt 7655 can be used to lock with the inside of the anti-deviation block 764 to achieve a reinforcement effect, further improving the overall assembly and use of the components.

[0046] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solutions described in this invention, or by designing similar technical solutions by those skilled in the art under the inspiration of the technical solutions described in this invention, falls within the protection scope of this invention.

Claims

1. A pick-and-place device for processing an STM die, comprising: The utility model provides a kind of pick-and-place structure, including adapter block (1), horizontal plate (2), limiting body (3), slide rail (4), moving block (5), cylinder (6), pick-and-place structure (7), the adapter block (1) is integrated with horizontal plate (2) back center, and the surface of horizontal plate (2) is positioned slide rail (4) position by limiting body (3) and is positioned to moving block (5), moving block (5) surface is provided with cylinder (6) and cylinder (6) lower end is connected with pick-and-place structure (7), it is characterized by: The pick-and-place structure (7) is provided with a fixed end (71), the lower end of the fixed end (71) is integrated with the air pipe (72), the air pipe (72) is loaded with an extension column (73) outside, an electric sliding block (74) is provided at the edge position outside the extension column (73), the extension column (73) is also connected with a suction nozzle structure (75) at the lower end and is loaded with a balance block (76) on the surface position; The suction nozzle structure (75) is also provided with a protective pad (751), the protective pad (751) is connected with a support (752) on the surface and determines the position of the flexible ring (753) through the support (752), the flexible ring (753) is opened with a ventilation groove (754) inside, a positioning rod (755) is also connected at the edge position of the support (752) to determine the position of the positioning block (756), and the infrared calibration lens (757) is loaded in the positioning block (756) inside; Through the fixed end (71) of the pick-and-place structure (7), the air pipe (72) is connected with the cylinder (6), and the ventilation groove (754) of the suction nozzle structure (75) at the bottom end of the extension column (73) is used to adsorb the components through the vacuum suction of the cylinder (6), so that the components are in contact with the flexible ring (753), and the infrared calibration lens (757) of the suction nozzle structure (75) is aligned with the edge position of the components in the process, and then the cylinder (6) is operated, and the balance block (76) of the suction nozzle structure (75) ensures the parallelism of the protective pad (751), and the extension column (73) is combined with the electric sliding block (74) to vertically slide on the outer surface of the air pipe (72).

2. The pick-and-place device for processing an STM die according to claim 1, wherein: The adapter block (1) and the horizontal plate (2) are perpendicular to each other, and the edge of the slide rail (4) is covered by the two limiting bodies (3) to determine the position of the moving block (5), the moving block (5) is moved in the position of the slide rail (4) to drive the cylinder (6) and the pick-and-place structure (7) to move horizontally.

3. The pick-and-place device of claim 1, wherein: The fixed end (71) is arranged at the top of the air pipe (72), and the air pipe (72) is arranged in a vertical direction and in contact with the inner wall of the extension column (73) outside, the extension column (73) and the suction nozzle structure (75) are perpendicular to each other and are restrained by the edge of the balance block (76) to maintain a "T" shape.

4. The pick-and-place device of claim 1, wherein: The protective pad (751) restrains the edge of the flexible ring (753) through the support (752), the ventilation groove (754) of the flexible ring (753) is communicated with the cylinder (6) through the air pipe (72), the positioning rod (755) is arranged in a straight direction and is fixedly connected with the support (752) by penetrating, the positioning rod (755) determines the position of the infrared calibration lens (757) through the positioning block (756), and the infrared calibration lens (757) is distributed at the corner position of the protective pad (751).

5. The pick-and-place device of claim 1, wherein: The fixed end (71) is provided with an insertion block (711), which is integrated with a rubber block (712), one end of the rubber block (712) is connected with an adsorption frame (713), the adsorption frame (713) is loaded with a contact layer (714) inside and is open to a cavity (715) in communication with the inside of the air cylinder (6); The insertion block (711) is open to multiple recesses and is embedded in the inner wall position of the air cylinder (6) through the rebound of the rubber block (712), the adsorption frame (713) is parallel to the inside of the air cylinder (6), and the contact layer (714) is in parallel and allows the gas of the air cylinder (6) to circulate through the cavity (715).

6. The pick-and-place device of claim 5, wherein: The cavity (715) position is also provided with a locking block (7151), which is arranged at the edge position of the clamping frame (7152), and the clamping frame (7152) is internally provided with an interception net (7153); The locking block (7151) is provided at the edge position of the clamping frame (7152) and is provided with four groups, the clamping frame (7152) is a square shape covering the edge of the interception net (7153) and limiting, the interception net (7153) is communicated with the cavity (715) and is parallel to the inside of the air cylinder (6).

7. The pick-and-place device of claim 1, wherein: The balancing block (76) is provided with an assembly block (761), which is arranged at the surface position of the block body (762) and the side edge of the block body (762) is connected with a clamping block (763), the edge position of the clamping block (763) is connected with a anti-deviation block (764), and the clamping ring (765) is contained in the interval of the anti-deviation block (764); The assembly block (761) is provided with two blocks on the block body (762) and the clamping block (763) of the block body (762) is in a transverse protruding form and carries the anti-deviation block (764) and the clamping ring (765) inserted into the extension column (73).

8. The pick-and-place device of claim 7, wherein: The clamping ring (765) is also provided with an arc ring body (7651), the lower end of the arc ring body (7651) is connected with a center block (7652), and the surface of the center block (7652) is loaded with a protruding block (7653), the both ends of the arc ring body (7651) are also connected with an overlapping block (7654) and are also loaded with a locking bolt (7655); The arc ring body (7651) is in a semicircular shape, the center block (7652) and the protruding block (7653) of the arc ring body (7651) are both in a solid form, the overlapping block (7654) covers the end position of the anti-deviation block (764), and the locking bolt (7655) of the overlapping block (7654) is locked into the inside of the anti-deviation block (764) in a vertical direction.

Images