A tape winding type carrier tape operation system

Abstract

The utility model relates to the field of smart card semiconductor packaging discloses a kind of reel type carrier tape operation systems, comprising: first conveying structure, second conveying structure and lifting adsorption structure, first conveying structure and second conveying structure are spaced apart along conveying direction, and lifting adsorption structure is installed between first conveying structure and second conveying structure;First conveying structure, lifting adsorption structure and second conveying structure are combined into the conveying channel for conveying reel type carrier tape, and lifting adsorption structure has the first working state of lifting reel type carrier tape to first working position;And lifting adsorption structure has the second working state of lowering reel type carrier tape to second working position.By the above setting, when reel type carrier tape is stepped and conveyed, the bottom of reel type carrier tape will not have the surface of fixed track continuous friction, and will not cause the damage of the bottom surface of reel type carrier tape, improve yield.

Description

Technical Field

[0001] This utility model relates to the field of smart card semiconductor packaging, specifically to a tape-and-carrier operation system. Background Technology

[0002] Solder paste printing is a core process in surface mount technology (SMT). It involves precisely applying solder paste to PCB pads using stencils or inkjet printing, directly impacting the soldering quality and rework rate of electronic products. This process utilizes automated equipment to complete steps such as feeding, positioning, calibration, and printing. The equipment includes a vision positioning system and a lifting mechanism to enhance accuracy.

[0003] However, the relevant equipment for solder paste printing on strip materials usually includes a conveying mechanism that conveys the material along the conveying direction and a track that provides printing support for the material. During the transportation of strip materials, the bottom surface of the tape is prone to continuous friction with the track, which is very likely to cause damage to the bottom surface of the material. This not only affects the appearance of the product, but may also cause circuit damage due to scratches, ultimately resulting in poor electrical performance of the chip and a decrease in yield. Utility Model Content

[0004] In view of this, the present invention provides a roll-type carrier tape operation system to solve the problem that related devices for solder paste printing on strip materials typically include a conveying mechanism that conveys materials along the conveying direction and a track that provides printing support for the materials. During the transportation of strip materials, the bottom surface of the roll is prone to continuous friction with the track, which is very likely to cause damage to the bottom surface of the material. This not only affects the appearance of the product, but may also cause circuit damage due to scratches, ultimately resulting in poor electrical performance of the chip and a decrease in yield.

[0005] In a first aspect, this utility model provides a roll-type carrier belt operation system, comprising:

[0006] A first conveying structure and a second conveying structure are arranged at intervals along the conveying direction;

[0007] A lifting and adsorption structure is installed between the first conveying structure and the second conveying structure; the first conveying structure, the lifting and adsorption structure, and the second conveying structure are combined to form a conveying channel for conveying the roll carrier belt;

[0008] The lifting and adsorption structure has a first working state of raising the roll carrier belt to a first working position; and the lifting and adsorption structure has a second working state of lowering the roll carrier belt to a second working position.

[0009] Beneficial Effects: In the initial state of the roll-to-roll carrier system, the lifting and adsorption structure is in the lower second working position. The first conveying structure, the second conveying structure, and the lifting and adsorption structure form a continuous conveying channel. The roll-to-roll carrier floats and passes over the lifting and adsorption structure, avoiding friction between its surface and the structure. The second conveying structure is used to transport the roll-to-roll carrier, moving it along the conveying direction. When solder paste printing is required on the roll-to-roll carrier located in the lifting and adsorption structure, the roll-to-roll carrier is first laid in the conveying channel. The lifting and adsorption structure lifts the roll-to-roll carrier to the first working position, where it is taut. The lifting and adsorption structure firmly adsorbs the roll-to-roll carrier onto the surface of the structure. An external printing mechanism prints solder paste on the upper surface of the roll-to-roll carrier. The first conveying structure assists the lifting and adsorption structure in traction and stretching the roll-to-roll carrier to keep it taut. The lifting and adsorption structure also adsorbs and fixes the roll-to-roll carrier to the upper surface, providing secondary stability and further preventing displacement during solder paste printing, thus providing stable support for printing. After printing is complete, the lifting and suction structure closes the vacuum and descends, causing the roll carrier tape on the lifting and suction structure to return to a suspended state. The second conveying structure then drives the roll carrier tape to continue moving along the conveying direction. Repeating the above steps achieves continuous solder paste printing on the roll carrier tape. With this setup, during the stepper conveyor transport of the roll carrier tape, there is no continuous friction between the bottom of the roll carrier tape and the surface of the fixed track, preventing damage to the bottom surface of the roll carrier tape and improving the yield rate.

[0010] In one optional embodiment, the lifting and lowering adsorption structure includes:

[0011] The limiting member has two parts, which are arranged at intervals along a direction perpendicular to the conveying direction; the two ends of the limiting member are respectively connected to the first conveying structure and the second conveying structure.

[0012] An adsorption element, wherein the adsorption element is installed between the two limiting elements;

[0013] A driving component, the output end of which is connected to the adsorption component.

[0014] In one optional embodiment, the adsorption member includes: an adsorption section and a lifting section; the adsorption section is installed at the top of the lifting section, and the adsorption end of the adsorption section is adapted to face upward; the driving member is installed at the bottom of the lifting section;

[0015] The width of the lifting part is greater than the distance between the two limiting members.

[0016] In one alternative embodiment, the lower limit position of the movable upper surface of the lifting part is lower than the lowest movable position of the bottom surface of the limiting member.

[0017] In one optional embodiment, the lifting and lowering adsorption structure further includes:

[0018] A track bar, which is installed on the inner side of the upper surface of the limiting member;

[0019] The mounting part is installed on the outside of the track bar, and the positive distance between the upper surface of the mounting part and the bottom surface of the limiting member is greater than the positive distance between the upper surface of the track bar and the bottom surface of the limiting member;

[0020] A limiting plate, which is horizontally mounted on the upper surface of the mounting portion;

[0021] There is a gap between the limiting plate and the track bar, and the side of the roll carrier belt is arranged between the track bar and the limiting plate.

[0022] Beneficial Effects: In the initial state of the roll carrier system, both the suction unit and the limiting unit are at the lowest point of their respective ranges of motion. The roll carrier is placed between the track and the limiting plate. When lifting is required, the drive unit pushes the lifting unit upward. Initially, before the lifting unit reaches the lower limit of the limiting unit's position, the limiting unit, the first conveyor structure, and the second conveyor structure remain stationary. As the system continues to rise, the sides of the lifting unit contact the bottom of the limiting unit, ensuring vertical guidance. The lifting unit then pushes the suction unit, the limiting unit, the first conveyor structure, and the second conveyor structure upward until the suction unit and the limiting unit reach their highest points. The suction unit then lifts the roll carrier, applying negative pressure upward at the suction end, causing the carrier to adhere tightly to the upper surface of the suction unit. An external printing mechanism prints solder paste at specific locations on the upper surface of the roll carrier located between the two limiting units.

[0023] When printing is completed and the system is reset, the vacuum in the adsorption section is deactivated, the roll carrier belt detaches from the adsorption surface, and the drive unit pushes the lifting unit downward. The adsorption unit, the limiting member, the first conveying structure, and the second conveying structure all move downward, but do not reach the lowest point of the limiting member's active position. As the downward movement continues, the limiting member moves down to its lowest point, preparing to disengage from the lifting unit. The lifting unit continues to move downward, the limiting member disengages from the lifting unit, and the limiting member, the first conveying structure, and the second conveying structure stop descending. The adsorption unit continues to move downward until it reaches the lower limit of its active position, at which point the descent stops. Both the adsorption unit and the limiting member are at their respective lowest points of activity, and the roll carrier belt returns to its suspended conveying state.

[0024] It is important to note that during the movement of the suction unit and the limiting member, regardless of whether they are in their highest or lowest positions, the side of the reel carrier tape remains within the gap between the track bar, the mounting part, and the limiting plate, thus eliminating lateral displacement space. When both the suction unit and the limiting member are in their highest positions, the suction unit lifts the reel carrier tape, taut it, and fixes it to the upper surface, providing secondary stability and further preventing misalignment during solder paste printing. When both the suction unit and the limiting member are in their lowest positions, the upper surface of the suction unit is lower than the upper surface of the track bar, allowing the suction unit to detach from the reel carrier tape. This enables the conveying of the reel carrier tape, preventing contact between the reel carrier tape and the top surface of the suction unit during transport, which could cause scratches and abrasions to the metal surface beneath the reel carrier tape.

[0025] In one optional embodiment, the limiting member has an adjustment groove along the conveying direction;

[0026] The lifting and adsorption structure also includes:

[0027] The first clearance wheel is installed inside the limiting member and is located on the side of the track bar near the second conveying structure.

[0028] The second clearance wheel is installed in the adjustment groove;

[0029] The side of the roll carrier belt is wound between the first clearance wheel and the second clearance wheel.

[0030] In one optional implementation, the first conveying structure includes:

[0031] A first conveying track is connected to the limiting member, and a first through hole is provided on the first conveying track;

[0032] A first motor is mounted on the first conveying track via a first mounting base;

[0033] A first mounting frame, which is connected to the first conveying track;

[0034] A damping drive wheel and a damping driven wheel are arranged vertically at the first through hole position. Both the damping drive wheel and the damping driven wheel are mounted on the first mounting bracket. The damping drive wheel is connected to the output end of the first motor.

[0035] Beneficial effects: The output of the first motor delivers a constant damping torque to the damping drive pulley. The damping drive pulley rotates with a fixed torque, driving the tape at that position to tend to move away from the limiting component, ensuring the tape maintains tension. The damping driven pulley below presses the tape against the damping drive pulley, preventing relative displacement between the tape and the drive pulley surface, avoiding slippage, and ensuring the stability of torque and tension. The surfaces of both the damping drive pulley and the damping driven pulley are made of flexible material to prevent scratches on the tape.

[0036] In one optional embodiment, the second conveying structure includes:

[0037] A second conveying track is connected to the limiting member, and a second through hole is provided on the second conveying track;

[0038] The second motor is mounted on the second conveying track via a second mounting bracket;

[0039] A drive wheel is connected to the second motor, and the drive wheel has a plurality of drive teeth arranged circumferentially; at least a portion of the drive wheel passes through the second through hole to the top of the second conveying track.

[0040] In one alternative embodiment, the second conveying structure includes a cover plate hinged to the second mounting base, the cover plate being able to cover the drive wheel.

[0041] Beneficial Effects: With the above configuration, the second conveying structure serves to convey the roll carrier belt. A reduction gearbox is also installed at the output end of the second motor. The second motor drives the drive wheel to rotate via the reduction gearbox. The drive wheel passes through the second through-hole to the positioning holes on both sides of the roll carrier belt above the second conveying track, thereby moving the roll carrier belt. As the drive wheel rotates continuously, its drive teeth drive the roll carrier belt to move continuously. When the limiting member and the suction member are at their lowest positions, the second conveying structure starts to move the roll carrier belt. When the limiting member and the suction member are at their upper limit positions, the second conveying structure stops conveying to allow the external solder paste printing mechanism to print on the roll carrier belt. Each movement is a fixed step size to ensure the accuracy of the roll carrier belt's position at each step. Before conveying with the second conveying structure, the cover plate can be opened to place the roll carrier belt. During operation, the cover plate needs to be closed over the roll carrier belt to prevent it from disengaging from the drive teeth on the drive wheel.

[0042] In one alternative embodiment, the ends of both the first and second conveying tracks away from the lifting and adsorption structure are arc-shaped tracks. Attached Figure Description

[0043] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0044] Figure 1 This is a schematic diagram of the overall structure of the tape-type carrier belt operation system in the embodiment of this utility model;

[0045] Figure 2 This is a schematic diagram of the overall structure of the lifting and adsorption structure in the embodiment of this utility model;

[0046] Figure 3 This is a schematic diagram of the lifting and adsorption structure near the second conveying structure in an embodiment of this utility model;

[0047] Figure 4 This is a side sectional view of the lifting and adsorption structure in an embodiment of this utility model;

[0048] Figure 5 This is a schematic diagram of the first conveying structure in an embodiment of the present invention.

[0049] Figure 6 This is a schematic diagram of the installation of the damping driving wheel and the damping driven wheel in the first conveying structure of this utility model embodiment;

[0050] Figure 7 This is a schematic diagram of the second conveying structure in an embodiment of the present utility model;

[0051] Figure 8 This is a schematic diagram showing the interaction of the drive wheel, drive teeth, and coiled carrier belt in an embodiment of this utility model.

[0052] Figure 9 This is a parameter annotation diagram of the first avoidance wheel in an embodiment of the present utility model;

[0053] Figure 10 This is a simulated curve diagram showing the angles corresponding to the radius and arc length of the second avoidance wheel in this embodiment of the present invention.

[0054] Explanation of reference numerals in the attached figures:

[0055] 1. First conveying structure; 11. First conveying track; 12. First motor; 13. First mounting base; 14. First mounting frame; 15. Damping drive wheel; 16. Damping driven wheel;

[0056] 2. Second conveying structure; 21. Second conveying track; 22. Second motor; 23. Second mounting base; 24. Drive wheel; 25. Drive gear; 26. Cover plate;

[0057] 3. Lifting and adsorption structure; 31. Limiting component; 311. Adjustment groove; 32. Adsorption component; 321. Adsorption part; 322. Lifting part; 33. Driving component; 34. Track bar; 35. Mounting part; 36. Limiting plate; 37. First clearance wheel; 38. Second clearance wheel;

[0058] 4. Reel-type carrier tape. Detailed Implementation

[0059] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0060] Solder paste printing is a core process in surface mount technology (SMT). It involves precisely applying solder paste to PCB pads using stencils or inkjet printing, directly impacting the soldering quality and rework rate of electronic products. This process utilizes automated equipment to complete steps such as feeding, positioning, calibration, and printing. The equipment includes a vision positioning system and a lifting mechanism to enhance accuracy.

[0061] However, the relevant equipment for solder paste printing on strip materials usually includes a conveying mechanism that conveys the material along the conveying direction and a track that provides printing support for the material. During the transportation of strip materials, the bottom surface of the tape is prone to continuous friction with the track, which is very likely to cause damage to the bottom surface of the material. This not only affects the appearance of the product, but may also cause circuit damage due to scratches, ultimately resulting in poor electrical performance of the chip and a decrease in yield.

[0062] To solve the above technical problems, the following will be combined with... Figures 1 to 10 The following describes embodiments of the present invention.

[0063] According to an embodiment of the present invention, a roll-type carrier belt operation system is provided, comprising: a first conveying structure 1, a second conveying structure 2, and a lifting and adsorption structure 3.

[0064] like Figures 1 to 8As shown, the first conveying structure 1 and the second conveying structure 2 are conveying tracks at the front and rear ends, respectively located at the beginning and end. The first conveying structure 1 and the second conveying structure 2 are spaced apart along the conveying direction. A lifting and adsorption structure 3 is installed between the first conveying structure 1 and the second conveying structure 2. Both ends of the lifting and adsorption structure 3 are connected to the first conveying structure 1 and the second conveying structure 2, respectively. The overall length direction of the lifting and adsorption structure 3 is the conveying direction of the roll carrier belt 4. The first conveying structure 1, the lifting and adsorption structure 3, and the second conveying structure 2 combine to form a conveying channel for conveying the roll carrier belt 4. The lifting and adsorption structure 3 has a first working state of raising the roll carrier belt 4 to a first working position; and a second working state of lowering the roll carrier belt 4 to a second working position.

[0065] In the initial state of the roll-type carrier tape operating system, the lifting and adsorption structure 3 is in the lower second working position. The first conveying structure 1, the second conveying structure 2, and the lifting and adsorption structure 3 form a continuous conveying channel. The roll-type carrier tape 4 floats and passes over the lifting and adsorption structure 3, avoiding friction between its surface and the lifting and adsorption structure 3. The second conveying structure 2 is used to transport the roll-type carrier tape 4, driving it to move along the conveying direction. When solder paste printing is required on the roll-type carrier tape 4 located in the lifting and adsorption structure 3, the roll-type carrier tape 4 is first laid in the conveying channel. The lifting and adsorption structure 3 drives the roll-type carrier tape 4 to rise to the first working position. The roll-type carrier tape 4 is taut, and the lifting and adsorption structure 3 firmly adsorbs the roll-type carrier tape 4 onto its surface. The external printing mechanism prints solder paste on the upper surface of the roll-type carrier tape 4. The first conveying structure 1 assists the lifting and adsorption structure 3 in pulling and stretching the roll-type carrier tape 4 to keep it taut, preventing displacement during the printing process and providing stable support for printing. After printing is complete, the lifting and suction structure 3 closes the vacuum and descends, causing the roll carrier 4 on the lifting and suction structure 3 to return to a suspended state. The second conveying structure 2 then drives the roll carrier 4 to continue moving along the conveying direction. The above steps are repeated to achieve continuous solder paste printing on the roll carrier 4. Through this setup, during the stepper conveyor transport of the roll carrier 4, there is no continuous friction between the bottom of the roll carrier 4 and the surface of the fixed track, preventing damage to the bottom surface of the roll carrier 4 and improving the yield rate.

[0066] In this embodiment, specifically, such as Figures 1 to 4As shown, the lifting and adsorption structure 3 includes: a limiting member 31, an adsorption member 32, a driving member 33, a track bar 34, a mounting part 35, and a limiting plate 36. The limiting member 31 is a long strip, and a single limiting member 31 is placed vertically, with its length direction being the same as the conveying direction of the roll-type carrier belt 4. The two ends of the limiting member 31 are respectively connected to the first conveying structure 1 and the second conveying structure 2, and the limiting member 31 is engaged with both the first conveying structure 1 and the second conveying structure 2. Two limiting members 31 are provided, and the two limiting members 31 are arranged at intervals along a direction perpendicular to the conveying direction, with the interval distance being slightly narrower than the width of the roll-type carrier belt 4. The adsorption member 32 is installed between the two limiting members 31, and the adsorption member 32 includes: an adsorption part 321 and a lifting part 322; the adsorption part 321 is installed at the top of the lifting part 322, and the adsorption end of the adsorption part 321 is adapted to face upward; the driving member 33 is installed at the bottom of the lifting part 322. The width of the adsorption part 321 is equal to the distance between the two limiting members 31. The side of the adsorption part 321 is in contact with the inner wall of the limiting member 31. The lifting part 322 is always below the two limiting members 31 during movement. The width of the lifting part 322 is greater than the distance between the two limiting members 31, so that the two sides of the lifting part 322 can contact the bottom ends of the two limiting members 31. The lower limit position of the movable upper surface of the lifting part 322 driven by the driving member 33 is lower than the lower limit position of the movable bottom surface of the limiting member 31. Two track bars 34 are provided, and the two track bars 34 are respectively provided on the upper surface of the two limiting members 31. The length direction of the track bar 34 is the conveying direction of the roll carrier belt 4. A mounting portion 35 is installed on the outer side of the track bar 34. Several mounting portions 35 are provided. The length direction of a single mounting portion 35 on the upper surface of a single limiting member 31 is the conveying direction of the roll carrier belt 4, and the arrangement direction of multiple mounting portions 35 on the upper surface of a single limiting member 31 is also the conveying direction of the roll carrier belt 4. The positive distance between the upper surface of the mounting portion 35 and the bottom surface of the limiting member 31 is greater than the positive distance between the upper surface of the track bar 34 and the bottom surface of the limiting member 31; that is, the upper surface of the mounting portion 35 is higher than the upper surface of the track bar 34. A limiting plate 36 is installed on the mounting portion 35, horizontally mounted on the upper surface of the mounting portion 35. A conveying gap for conveying the roll carrier belt 4 exists between the lower surface of the limiting plate 36 and the upper surface of the track bar 34. The side of the roll carrier belt 4 is arranged between the track bar 34 and the limiting plate 36.

[0067] In the initial state of the roll-type carrier belt operating system, the adsorption member 32 and the limiting member 31 are both at the lowest point of their respective ranges of motion. The roll-type carrier belt 4 is placed between the track bar 34 and the limiting plate 36. When lifting is required, the drive member 33 pushes the lifting part 322 upward. For a period of time, the lifting part 322 has not reached the lower limit of the limit member 31's position, and the limiting member 31, the first conveying structure 1, and the second conveying structure 2 remain stationary. As it continues to rise, the lifting part 322 contacts the bottom of the limiting member 31 on both sides to ensure vertical guidance. The lifting part 322 pushes the adsorption part 321, the limiting member 31, the first conveying structure 1, and the second conveying structure 2 to continue moving upward until the adsorption part 321, the limiting member 31, the first conveying structure 1, and the second conveying structure 2 all reach the highest point of their positions. The adsorption part 321 lifts the roll-type carrier belt 4, and the adsorption end of the adsorption part 321 applies negative pressure upward, causing the carrier belt to adhere tightly to the upper surface of the adsorption part 321. An external printing mechanism prints solder paste at specific locations on the upper surface of the tape 4 located between two limiting members 31.

[0068] When printing is completed and the device is reset, the vacuum in the adsorption section 321 is closed, the roll carrier belt 4 detaches from the adsorption surface, and the drive member 33 pushes the lifting section 322 downward. The adsorption section 321, the limiting member 31, the first conveying structure 1, and the second conveying structure 2 all move downward, but do not reach the lowest point of the limiting member 31's active position. As it continues to move downward, the limiting member 31 moves downward to its lowest point, preparing to disengage from the lifting section 322. The lifting section 322 continues to move downward, the limiting member 31 disengages from the lifting section 322, and the limiting member 31, the first conveying structure 1, and the second conveying structure 2 stop descending. The adsorption member 32 continues to move downward until it reaches the lower limit of its active position, at which point the descent stops. The adsorption member 32 and the limiting member 31 are both at their respective lowest points of activity, and the roll carrier belt 4 returns to its suspended conveying state.

[0069] It is important to note that during the movement of the adsorption part 321 and the limiting member 31, regardless of whether they are in their highest or lowest positions, the side of the roll carrier tape 4 is always within the gap between the track bar 34, the mounting part 35, and the limiting plate 36, thus eliminating lateral displacement space. When both the adsorption part 321 and the limiting member 31 are in their highest positions, the adsorption part 321 lifts the roll carrier tape 4, making it taut and adsorbing and fixing it to the upper surface, providing secondary stability and further preventing offset phenomena during solder paste printing. When both the adsorption part 321 and the limiting member 31 are in their lowest positions, the upper surface of the adsorption part 321 is lower than the upper surface of the track bar 34, thereby causing the adsorption part 321 to detach from the roll carrier tape 4. This allows the conveying of the roll carrier tape 4 to begin, thus preventing the roll carrier tape 4 from contacting the top surface of the adsorption part 321 during conveying, which would cause scratches and abrasions to the metal surface below the roll carrier tape 4.

[0070] In this embodiment, as Figure 3 and Figure 4 As shown, the limiting member 31 has an adjustment groove 311 along the conveying direction. The lifting and adsorption structure 3 also includes: a first avoidance wheel 37 and a second avoidance wheel 38. The outer diameter of the first avoidance wheel 37 is smaller than the outer diameter of the second avoidance wheel 38. There are two first avoidance wheels 37. The two first avoidance wheels 37 are respectively installed on the inner side of the two limiting members 31. Both first avoidance wheels 37 are located on the side of the track bar 34 near the second conveying structure 2. The first avoidance wheels 37 and the second avoidance wheel 38 support the side of the roll carrier belt 4. The first avoidance wheels 37 and the second avoidance wheel 38 will not contact the area where the solder paste is printed. The second clearance wheel 38 is installed in the adjustment groove 311. For example, a screw can be installed axially in the center of the second clearance wheel 38, and the screw is inserted into the adjustment groove 311. Nuts are installed on the screws on both sides of the adjustment groove 311, and the nuts are tightened to fix the second clearance wheel 38 in the adjustment groove 311; or the nuts can be rotated toward the side away from the corresponding limiting member 31 to loosen the second clearance wheel 38, thereby adjusting the position of the second clearance wheel 38 in the adjustment groove 311. The side of the reel-type carrier belt 4 is wound between the first clearance wheel 37 and the second clearance wheel 38. Specifically, the reel-type carrier belt 4 is wound from the upper end of the first clearance wheel 37 and extends from the lower end of the second clearance wheel 38, forming a bent propagation path. This allows the reel carrier 4 to make a small-radius, large-angle avoidance at the first avoidance roller 37, so that the current printing area of ​​the reel carrier 4 can effectively avoid the solder paste printing area of ​​the previous reel carrier 4, protecting the printed solder paste from contact and preventing damage to the solder paste shape.

[0071] like Figure 9 As shown, the specific calculation steps for determining the position of the second clearance wheel 38 on the adjustment groove 311 are as follows: Define the radius r of the second clearance wheel 38, the length (arc length) of the coiled carrier belt 4 on the guide wheel as l, the angle θ corresponding to the arc length, the projection d of the arc length in the X direction, and the projection h in the Y direction. Based on the above conditions, the following equations can be listed.

[0072]

[0073] Combining the constraints and abstract geometric constraints, the following variable constraints are listed:

[0074] l<7.716 ③

[0075] To avoid the height of the solder paste, h is given a relatively large redundancy of 316%.

[0076] h≥0.5 ④

[0077] The projection of the length l of the reel carrier belt 4 on the guide roller in the horizontal direction must be less than its length itself:

[0078] d <l ⑤

[0079] Since the length of the reel-type carrier belt 4 on the guide roller corresponds to an angle ranging from 45° to 90°:

[0080] 45°≤θ≤90° ⑥

[0081] Based on the material properties of the roll carrier belt 4, experiments show that short-term bending has little impact on product performance when the bending radius is above 1.75mm. Taking a 15% redundancy value, the actual bending radius is limited as follows:

[0082] r≥2 ⑦

[0083] Get as Figure 10 The image is plotted with vertical coordinates of r (mm) and horizontal coordinates of θ (°). Using the starting point of the leftmost line segment as the reference, from top to bottom, the curves are the first curve, the first horizontal line, the second curve, and the third curve. The vertical lines from left to right are the first and second vertical lines, respectively. The first curve represents equation ① when taking the extreme value of constraint ③; the second curve represents equation ② when taking the extreme value of constraint ④ and setting d = 1.45; the first and second vertical lines represent the extreme values ​​of θ, and the first horizontal line is the intersection of the maximum extreme value and the first curve of equation ①. The value of r is the intersection of the closed intervals of the curves above it within the constraints, i.e., 4.9 ≥ r ≥ 2. Therefore, the radius of the first clearance wheel 37 can be determined. Using a bearing with a radius between 4.9 mm and 2 mm as the first clearance wheel 37 ensures that the strip product is not damaged without damaging the printed solder paste within a bending angle range of 45° to 90°.

[0084] In this embodiment, as Figure 5 and Figure 6 As shown, the first conveying structure 1 includes a first conveying track 11, a first motor 12, a first mounting base 13, a first mounting frame 14, a damping drive wheel 15, and a damping driven wheel 16. The first conveying track 11 is connected to the limiting member 31, and a vertical first through hole is formed on the first conveying track 11. The first mounting base 13 and the first mounting frame 14 are mounted on the first conveying track 11. The first motor 12 is mounted on the first mounting base 13. The damping drive wheel 15 and the damping driven wheel 16 are arranged vertically at the position of the first through hole, and both the damping drive wheel 15 and the damping driven wheel 16 are mounted on the first mounting frame 14. The damping drive wheel 15 is connected to the output end of the first motor 12. The first motor 12 is a damping motor.

[0085] The output of the first motor 12 delivers a constant damping torque to the damping drive wheel 15. The damping drive wheel 15 rotates with a fixed torque, driving the roll carrier belt 4 at that position to tend to move away from the limiting member 31, ensuring that the roll carrier belt 4 maintains tension. The damping driven wheel 16 below presses the roll carrier belt 4 against the damping drive wheel 15, preventing relative displacement between the roll carrier belt 4 and the surface of the damping drive wheel 15, avoiding slippage of the drive wheel, and ensuring the stability of torque and tension. The surfaces of the damping drive wheel 15 and the damping driven wheel 16 are made of flexible material to prevent them from scratching the roll carrier belt 4.

[0086] The first conveyor track 11 can be configured as a double layer, with the roll carrier belt 4 located between the double layers of the first conveyor track 11.

[0087] In this embodiment, as Figures 7 to 8 As shown, the second conveying structure 2 includes: a second conveying track 21, a second motor 22, a second mounting base 23, drive wheels 24, and a cover plate 26. The second conveying track 21 is connected to a limiting member 31. A second through hole is vertically opened on the second conveying track 21. The second motor 22 is mounted on the second conveying track 21 through the second mounting base 23. The axial direction of the output shaft of the second motor 22 is perpendicular to the conveying direction. There are two drive wheels 24, and two drive members 33 are mounted on the second motor 22. Each drive wheel 24 has multiple drive teeth 25 arranged circumferentially on its annular sidewall. At least part of the drive wheel 24 passes through the second through hole to the top of the second conveying track 21. The cover plate 26 is hinged to the second mounting base 23 and can cover the drive wheels 24.

[0088] With the above configuration, the second conveying structure 2 serves to convey the roll carrier belt 4. A reduction gearbox is also installed at the output end of the second motor 22. The second motor 22 drives the drive wheel 24 to rotate via the reduction gearbox. The drive wheel 24 passes through the second through hole to the positioning holes on both sides of the roll carrier belt 4 above the second conveying track 21, thereby moving the roll carrier belt 4. As the drive wheel 24 rotates continuously, its drive teeth 25 drive the roll carrier belt 4 to move continuously. When the limiting member 31 and the suction member 32 are at their lowest positions, the second conveying structure 2 starts to move the roll carrier belt 4. When the limiting member 31 and the suction member 32 are at their upper limit positions, the second conveying structure 2 stops conveying to allow the external solder paste printing mechanism to print on the roll carrier belt 4. Each movement is a fixed step size to ensure the accuracy of the roll carrier belt 4's position at each step. Before the second conveying structure 2 conveys, the cover plate 26 can be opened to place the roll carrier belt 4. During operation, the cover plate 26 needs to be closed over the roll carrier belt 4 to prevent the roll carrier belt 4 from disengaging from the drive teeth 25 on the drive wheel 24.

[0089] In this embodiment, as Figure 1 , Figures 5 to 8 As shown, the ends of the first conveying track 11 and the second conveying track 21 that are away from the lifting and adsorption structure 3 are both arc-shaped tracks, which can make the roll carrier belt 4 smoothly transition between upstream and downstream equipment.

[0090] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A reel-type carrier belt operation system, characterized in that, include: A first conveying structure (1) and a second conveying structure (2) are provided at intervals along the conveying direction; A lifting adsorption structure (3) is installed between the first conveying structure (1) and the second conveying structure (2); the first conveying structure (1), the lifting adsorption structure (3) and the second conveying structure (2) are combined to form a conveying channel for conveying the roll carrier belt (4); The lifting and adsorption structure (3) has a first working state of lifting the roll carrier (4) to a first working position; and the lifting and adsorption structure (3) has a second working state of lowering the roll carrier (4) to a second working position.

2. The tape-type carrier belt operating system according to claim 1, characterized in that, The lifting and lowering adsorption structure (3) includes: Two limiting members (31) are provided, and the two limiting members (31) are arranged at intervals along a direction perpendicular to the conveying direction; the two ends of the limiting members (31) are respectively connected to the first conveying structure (1) and the second conveying structure (2); An adsorption element (32) is installed between the two limiting elements (31); The driving element (33) is connected to the adsorption element (32) at its output end.

3. The tape-type carrier belt operating system according to claim 2, characterized in that, The adsorption component (32) includes an adsorption part (321) and a lifting part (322); the adsorption part (321) is installed at the top of the lifting part (322), and the adsorption end of the adsorption part (321) is adapted to face upward; the driving component (33) is installed at the bottom of the lifting part (322); The width of the lifting part (322) is greater than the distance between the two limiting members (31).

4. The tape-type carrier belt operating system according to claim 3, characterized in that, The lower limit position of the movable upper surface of the lifting part (322) is lower than the lowest movable position of the bottom surface of the limiting member (31).

5. The tape-type carrier belt operating system according to claim 3, characterized in that, The lifting and lowering adsorption structure (3) also includes: Track bar (34), said track bar (34) is installed on the inner side of the upper surface of said limiting member (31); Mounting part (35), which is mounted on the outside of track bar (34), the positive distance between the upper surface of the mounting part (35) and the bottom surface of the limiting member (31) is greater than the positive distance between the upper surface of the track bar (34) and the bottom surface of the limiting member (31); A limiting plate (36) is horizontally mounted on the upper surface of the mounting part (35); There is a gap between the limiting plate (36) and the track bar (34), and the side of the roll carrier belt (4) is arranged between the track bar (34) and the limiting plate (36).

6. The tape-type carrier belt operating system according to claim 5, characterized in that, The limiting member (31) is provided with an adjustment groove (311) along the conveying direction; The lifting and lowering adsorption structure (3) also includes: The first clearance wheel (37) is installed inside the limiting member (31) and is located on the side of the track bar (34) near the second conveying structure (2); The second avoidance wheel (38) is installed in the adjustment groove (311); The side of the roll carrier belt (4) is wound between the first clearance wheel (37) and the second clearance wheel (38).

7. The tape-type carrier belt operating system according to claim 5, characterized in that, The first conveying structure (1) includes: A first conveying track (11) is connected to the limiting member (31), and a first through hole is provided on the first conveying track (11); The first motor (12) is mounted on the first conveying track (11) via the first mounting base (13); The first mounting bracket (14) is connected to the first conveying track (11); The damping drive wheel (15) and the damping driven wheel (16) are arranged vertically at the first through hole position. Both the damping drive wheel (15) and the damping driven wheel (16) are mounted on the first mounting bracket (14). The damping drive wheel (15) is connected to the output end of the first motor (12).

8. The tape-type carrier belt operating system according to claim 7, characterized in that, The second conveying structure (2) includes: The second conveying track (21) is connected to the limiting member (31), and the second conveying track (21) is provided with a second through hole; The second motor (22) is mounted on the second conveying rail (21) via the second mounting base (23); A drive wheel (24) is connected to the second motor (22), and a plurality of drive teeth (25) are arranged circumferentially on the drive wheel (24); at least part of the drive wheel (24) passes through the second through hole to the top of the second conveying track (21).

9. The tape-type carrier belt operating system according to claim 8, characterized in that, The second conveying structure (2) includes a cover plate (26) hinged to the second mounting base (23) and the cover plate (26) can cover the drive wheel (24).

10. The tape-type carrier belt operating system according to claim 8, characterized in that, Both the first conveying track (11) and the second conveying track (21) are arc-shaped tracks at the ends away from the lifting and adsorption structure (3).

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