An automatic rewinding and unwinding device for SMT trays

Abstract

The present invention discloses an automatic SMT material tray reeling and unwinding device. The material tray slides from the device's feeding mechanism into the material tray guide mechanism and enters the material tray push-pull mechanism to be positioned. The material tray is then pushed into the material tray rotary drive mechanism. The tape tearing and rethreading mechanisms tear the tape from the material tray. The material tape traction mechanism pulls the material tape through the material tape tensioning mechanism and temporarily rewinds it on the empty winding mechanism to achieve the unwinding of the material tape. After unwinding is completed, the tail of the material tape is again pulled by the material tape traction mechanism through the tape tearing and rethreading mechanisms to the material tray rotary drive mechanism, where it is reversely rewound back to the material tray. After rewinding is completed, the material is unloaded to the unloading mechanism. The device of the present invention can realize the automatic tape removal, hanging, unwinding, and rewinding of SMT material trays.

Description

Technical Field

[0001] The present invention relates to the field of automatic reeling and unreeling of material trays, and in particular to an automatic reeling and unreeling device for SMT material trays. Background Art

[0002] After SMT (Surface Mounted Technology) tape is braided into a reel (SMT reel), the reel tape needs to be unwound and reeled in certain scenarios (for example, during the final confirmation before SMT reel shipment, during full inspection or spot inspection of the reel status and serious defects of the packaged materials after packaging by existing automatic equipment, and during visual re-inspection and confirmation of large quantities of packaged materials). Currently, the commonly used method for reeling and unwinding is to manually tear off the tape and manually unwind the tape, or to manually hang the front end of the tape on a semi-automatic unwinding device, which then unwinds the tape, and the final rewinding also requires manual processing. Both methods have the following difficulties: the tape needs to be manually torn off, the tail of the tape needs to be manually inserted into the reel slot, and the tape drive hole needs to be manually hung into the drive pinwheel. In other words, the existing reeling and unwinding requires manual operation, which limits the automation and scalability of such application scenarios. Summary of the Invention

[0003] In order to make up for the above-mentioned deficiencies in the prior art, the present invention proposes an automatic SMT material tray reeling and unreeling device.

[0004] The technical problem of the present invention is solved by the following technical solutions:

[0005] The material tray automatic reeling and unwinding device is characterized in that it comprises a workbench, a feeding mechanism located on the top surface of the workbench, a material tray guiding mechanism, a material tray pushing and pulling mechanism, a material tray rotating driving mechanism, a tape tearing and back-threading mechanism, a material tray tensioning mechanism, an empty coiling belt mechanism and a material tape traction mechanism, and a material discharge mechanism located on the bottom surface of the workbench; wherein: the feeding mechanism, the material tray guiding mechanism and the material discharge mechanism are arranged on the same side of the workbench from top to bottom; the material tray rotating driving mechanism, the tape tearing and back-threading mechanism, the tensioning mechanism and the empty coiling belt mechanism are arranged side by side to form a straight working area, and the material tape traction mechanism is used to move in an area parallel to the straight working area to pull the material tape; the feeding mechanism is used to feed the material tray guide mechanism one tray at a time; the material tray guide mechanism is used to change the material tray into an upright state and guide the material tray into the material tray pushing mechanism. The pulling mechanism is used to push the material tray into or out of the material tray rotating drive mechanism, and send the material tray with the wound material tape into the unloading mechanism; the material tray rotating drive mechanism is used to drive the material tray to rotate so as to reel in and out the material tape; the tape tearing and back-threading mechanism D is used to tear the tape at the front of the material tape or guide the tail of the material tape into the card slot of the material tray; the material tape traction mechanism is used to pull the front of the material tape torn by the tape tearing and back-threading mechanism to the empty winding belt mechanism for clamping when unwinding, and to pull the tail of the material tape into the tape tearing and back-threading mechanism when rewinding; the material tape tensioning mechanism is used to drive the material tape to unwind and rewind at a uniform speed, and ensure that the material tape is tensioned and prevent the material tape from shaking; the empty winding belt mechanism is used to temporarily wind up the material tape that has been inspected; the unloading mechanism is used to receive the material tray with the material tape wound after inspection in the material tray pushing and pulling mechanism.

[0006] The beneficial effects of the present invention compared with the prior art include: in the SMT material tray automatic winding and unwinding device of the present invention, the material tray slides into the material tray guide mechanism by the feeding mechanism, and enters the material tray push-pull mechanism to be positioned, and then the material tray is pushed into the material tray rotation drive mechanism, the tape tearing and back-threading mechanism tears the tape of the material tape, and the material tape traction mechanism pulls the material tape through the material tape tensioning mechanism and temporarily rewinds it on the empty winding tape mechanism to realize the unwinding of the material tape. When the unwinding is completed, the tail of the material tape is again pulled by the material tape traction mechanism through the tape tearing and back-threading mechanism to the material tray rotation drive mechanism and is reversed and rewound back to the material tray. After the winding is completed, the material is unloaded to the unloading mechanism. Through the above design, the automatic tape removal, hanging, unwinding and rewinding of the SMT material tray can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 This is a perspective view of the overall structure of an automatic SMT tray reeling and unreeling device according to an embodiment of the present invention;

[0008] Figure 2 A top perspective view of a feeding mechanism A according to an embodiment of the present invention;

[0009] Figure 3 A bottom perspective view of a feeding mechanism A according to an embodiment of the present invention;

[0010] Figure 4a 、 4b 4c and 4d are respectively a perspective view, a top view and a BB-cross-sectional view of a tray guide mechanism B according to an embodiment of the present invention;

[0011] Figure 5 This is a front perspective view of a tray push-pull mechanism according to an embodiment of the present invention;

[0012] Figure 6 This is a rear perspective view of a tray push-pull mechanism according to an embodiment of the present invention;

[0013] Figure 7 This is a front perspective view of a tray rotation drive mechanism according to an embodiment of the present invention;

[0014] Figure 8 This is a rear perspective view of a tray rotation drive mechanism according to an embodiment of the present invention;

[0015] Figure 9 for Figure 7 A perspective view of the rotary drive shaft K2 is shown;

[0016] Figure 10 A front perspective view of a tape tearing and rethreading mechanism according to an embodiment of the present invention;

[0017] Figure 11 A rear perspective view of a tape tearing and rethreading mechanism according to an embodiment of the present invention;

[0018] Figure 12 A perspective view of a tape tensioning mechanism according to an embodiment of the present invention;

[0019] Figure 13a and 13b They are front and rear stereoscopic views of an empty coiled belt mechanism according to an embodiment of the present invention.

[0020] Figure 14 This is a three-dimensional diagram of a material belt pulling mechanism according to an embodiment of the present invention.

[0021] Figure 15a and 15b They are respectively front and rear stereoscopic views of a blanking mechanism according to an embodiment of the present invention. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings and in combination with preferred embodiments. It should be noted that, unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other.

[0023] It should be noted that the directional terms such as left, right, up, down, top, and bottom in this embodiment are merely relative concepts, or are based on the normal use status of the product, and should not be considered as restrictive.

[0024] A specific embodiment of the present invention provides an automatic SMT tray reeling and unwinding device, which is used for automatic tape removal, hanging, unwinding and rewinding of SMT trays (referred to as "trays" in this article). It first unwinds the tape on a tray onto an empty tray, and after the inspection is completed, rewinds the tape on the empty tray back onto the tray for unloading.

[0025] like Figure 1 As shown, the automatic SMT tray reel winding and unwinding device includes a worktable F, a feeding mechanism A located on the top surface of the worktable F, a tray guide mechanism B, a tray push-pull mechanism C, a tray rotation drive mechanism K, a tape tearing and rethreading mechanism D, a tape tensioning mechanism G, an empty coiling mechanism H, and a tape traction mechanism J, and a discharge mechanism E located on the bottom surface of the worktable F. The feeding mechanism A, the tray guide mechanism B, and the discharge mechanism E are arranged from top to bottom on the same side of the worktable F. The tray rotation drive mechanism K, the tape tearing and rethreading mechanism D, the tensioning mechanism G, and the empty coiling mechanism are arranged side by side to form a linear working area (within which the tape is tensioned and free of bending, twisting, etc. during reeling and unwinding). The tape traction mechanism J can move within an area parallel to the linear working area (in a preferred embodiment, the guide rail J1 of the tape traction mechanism J is parallel to the linear working area) to provide a tape traction function.

[0026] The feeding mechanism A is used to feed trays one by one to the tray guide mechanism B. For example, an operator can stack multiple trays horizontally within the feeding mechanism A and feed them sequentially, one by one, to the tray guide mechanism B from the bottom of the feeding mechanism A. The tray guide mechanism B is used to upright the trays and guide them into the tray push-pull mechanism C. In this specific example, a tray that is horizontal within the feeding mechanism A (i.e., with its surface parallel to the horizontal plane) will be transformed into an upright position (i.e., with its surface perpendicular to the horizontal plane) within the tray guide mechanism B after entering the tray guide mechanism B.

[0027] One position of the tray pushing and pulling mechanism C is connected to the tray guiding mechanism B, and the other position can be connected to or detached from the tray rotating drive mechanism K. It is used to keep the tray in an upright state, position the center hole of the tray, and then push the tray into or detach from the tray rotating drive mechanism K (in a preferred embodiment, it is to push the rotating drive shaft K2 of the tray rotating drive mechanism K into or detach from the tray rotating drive mechanism K), and send the tray with the wound material strip into the unloading mechanism E.

[0028] The tray rotation drive mechanism K is used to drive the tray to rotate, thereby retracting and unreeling the tape. The tape tearing and rethreading mechanism D is used to tear the tape at the front of the tape or guide the tail of the tape into the slot of the tray. The tape traction mechanism J is used to pull the front of the tape, which has been torn by the tape tearing and rethreading mechanism D, into the empty coiling mechanism H for clamping during unwinding, and to pull the tail of the tape into the tape tearing and rethreading mechanism D during rewinding. The tape tensioning mechanism G is used to drive the tape to unwind and rewind at a uniform speed, ensure the tape is tensioned, and prevent the tape from shaking. The empty coiling mechanism H is used to temporarily reel in inspected tape. The unloading mechanism E is used to receive the inspected and rewound tray from the tray push-pull mechanism C.

[0029] In a preferred embodiment, Figure 2 and 3 As shown, the feeding mechanism A includes a frame A7, a cylinder A6, a material tray storage part A1, two lifting arms A5, a lifting arm opening and closing cylinder A4, a tape detection camera A3 at the front of the material strip, and a support plate A2; wherein: the frame A7 is installed on the workbench F, the material tray storage part A1 is located on the table of the frame A7; the tape detection camera A3 is installed on the frame A7 and is located above the tape tearing and back-threading mechanism D, and is used to detect and locate the tape position at the front of the material strip so as to position the tape tearing and back-threading mechanism D for its working position. position; the pallet A2 is located on the bottom surface of the tray storage part A1, one end of the cylinder A6 is connected to the pallet A2, and the other end is connected to the frame A7, so as to drive the pallet A2 to open downward at a predetermined angle so that the tray slides from the bottom of the tray storage part A1 through the pallet A2 into the tray guide mechanism B; the two lifting arms A5 and the lifting arm opening and closing cylinder A4 are both installed on the frame A7, and the two lifting arms A5 are closed to clamp the tray or opened to release the tray under the drive of the lifting arm opening and closing cylinder A4.

[0030] In a preferred embodiment, Figure 4a 、 4b As shown in Figure 4c, the tray guide mechanism B includes an arc-shaped inclined plate B1 (for example, a circular arc plate with a radius of 120 mm), a plane plate B2 and an inclined guide plate B3. A vertical groove is formed between the convex surface of the arc-shaped inclined plate B1 and the plane plate B2. The inclined guide plate B3 is located in the vertical groove. The convex surface of the arc-shaped inclined plate B1 is used to receive the tray sliding in from the feeding mechanism A. The inclined guide plate B3 is used to allow the tray that has become upright in the vertical groove to roll on it and enter the tray push-pull mechanism.

[0031] In a preferred embodiment, Figure 5 and 6As shown, the tray push-pull mechanism C includes a bottom plate C3, a side baffle C2, two push-pull plates C5, a push-pull drive shaft C13, a spring C4, a guide shaft C6, a linear bearing C7, a push-pull drive cylinder C8, and a drive cylinder C9; wherein: the bottom plate C3, the side baffle C2 and the two push-pull plates C5 together constitute a space for keeping the tray upright, and the bottom plate C3 can be opened and closed and connected to the bottom between the two push-pull plates C5 (after the tray rolls down from the tray guide mechanism B, it enters the above space from the front between the two push-pull plates C5, and one short side of the bottom plate C3 is movably connected to the two push-pull plates At the bottom of the rear portion between the pull plates C5, the other short side of the bottom plate C3 can be opened and closed relative to the bottom of the two push-pull plates C5. When it is closed, the material tray is kept in the above-mentioned space. When it is opened, the material tray slides from the above-mentioned space into the unloading mechanism E via the bottom plate C3. The side baffle C2 is connected to the rear portion between the two push-pull plates C5; the driving cylinder C9 is also connected to the rear portion of the two push-pull plates C5 (that is, the side baffle C2, a short side of the bottom plate C3 and the driving cylinder C9 are all located on the same side) and is used to drive the bottom plate C3 to open downward to a predetermined angle to unload the material tray; the guide shaft C6 One end of the guide shaft C6 is connected to one of the push-pull plates C5, the other end of the guide shaft C6 is connected to the linear bearing C7, one end of the push-pull drive shaft C13 is connected to the push-pull drive cylinder C8, and the other end of the push-pull drive shaft C13 is connected to the core shaft at the center of the spring C4. The core shaft at the center of the spring C4 is a sliding telescopic connection in the spring position. The spring C4 here not only pushes the push-pull plate C5, but also gives the push-pull drive shaft C13 a reverse thrust at the same time, which plays a buffering role, so that the push-pull action here has a spring-action buffer stroke, preventing the three groups of notches around the central axis of the tray. Damage to the tray caused by failure to align K11 at the end of the rotating drive shaft K2; the push-pull drive cylinder C8 is used to drive the two push-pull plates C5 to move back and forth as a whole, so that when it is pushed, it is connected to the tray rotation drive mechanism K (that is, it is connected to the rotating drive shaft K2, so that the tray is fixed on the rotating drive shaft K2 and driven by the rotating drive shaft K2 to rotate between the two push-pull plates C5, thereby unwinding or rewinding the material strip from the tray), and when it is pulled, it is separated from the tray rotation drive mechanism K (that is, the rewound tray is separated from the rotating drive shaft K2 for subsequent unloading). More preferably, there are multiple sets of guide shafts C6 and linear bearings C7. In this example, there are a total of four sets of guide shafts C6 and linear bearings C7, which serve to support and guide the two push-pull plates C5 to slide back and forth.

[0032] In a preferred embodiment, Figure 7 、 8As shown in Figure 9, the tray rotation drive mechanism K includes a rotation drive shaft K2, a cylinder K8 and a stopper K9; wherein, the rotation drive shaft K2 includes a core shaft K6, three movable expansion sleeves K12, an end guide head K10 and three fixed positioning teeth K11; the end guide head K10 is located at the end of the rotation drive shaft K2, the three fixed positioning teeth K11 are located at intervals on the outside of the rotation drive shaft K2, and the three movable expansion sleeves K12 are respectively installed on the three fixed positioning teeth K1 1 and cooperate with the inclined surface of the positioning tooth K11; the cylinder K8 is used to drive the stopper K9 to push the core shaft K6 forward to loosen the three movable expansion sleeves K12 or loosen the core shaft K6 to loosen and expand the three movable expansion sleeves K12; the three movable expansion sleeves K12 can expand and contract with the expansion and contraction of the core shaft K6 to achieve the expansion and loosening of the material tray, and the three fixed positioning teeth K11 are respectively used to insert into the three positioning grooves of the material tray to position the material tray. More preferably, as Figure 7 As shown, as needed, the material tray rotation drive mechanism K can also include a light source K3 to provide light for the tape detection camera A3 to shoot the tape of the material tape, a camera K4 for shooting the material tray QR code label K7, and a light source K5 for shooting the camera K4.

[0033] In a preferred embodiment, Figure 10 、 11As shown, the tape tearing and back-threading mechanism D includes a bracket D14, a tape tearing rocker D2, a tape tearing claw D1, a driving cylinder D5 for clamping the tape, a tape pressure head D3, a driving cylinder D13 for the tape pressure head, a tape back-threading rod D4, a linear module D9, a lifting slot D7 for unwinding the tape, a tape position detection sensor D6, a first bearing D15, a first cylinder D8, a second cylinder D12, and a second bearing D10; wherein, the head of the tape tearing rocker D2 is a shovel-shaped structure, and the interior of the tape back-threading rod D4 has a guide groove for allowing the tape to slide along the guide groove and finally extend into the slot of the material tray, and the trumpet-shaped notch D11 of the guide groove is located at the tail end of the tape back-threading rod D4; the driving cylinder D5 for clamping the tape is installed on the tape tearing rocker D2 and connected to the claw D1, and the claw D1 is installed on the tape tearing rocker D2 and located at the shovel-shaped structure. Above the structure, the driving cylinder D5 for clamping the tape is used to drive the clamping claw D1 to move up and down and the shovel-shaped structure to clamp or release the end of the tape; the tail of the tape tearing rocker D2 is installed on the bracket D14 through the first bearing D15, and the first cylinder D8 provides a driving force for the swing of the tape tearing rocker D2, which is used to drive the tape tearing rocker D2 to rotate a predetermined angle along the first bearing D15; the tape presser D3 is installed on the tape return rod D4 and is located at the head of the tape return rod D4, and the driving cylinder D13 of the tape presser is connected to the tape presser D3 to drive the tape presser D3 to press the tape; the tail of the tape return rod D4 is installed on the bracket D14 through the second bearing D10; the second cylinder D12 provides a driving force for the swing of the tape return rod D4, which is used to drive the tape return rod D4 to rotate a predetermined angle along the second bearing D10. The tape tearing lever D2 and the tape rewinding lever D4 are independently driven to swing, ensuring they do not interfere with each other during rewinding and unwinding, and avoid the need for the tape traction mechanism J. A lifting slot D7 is mounted on the bracket D14, outside the tape rewinding lever D4. It supports the tape during unwinding, preventing it from shaking and limiting tail swing. The detection sensor D6 is mounted on the lifting slot D7 to detect and record the tape's end position. The bracket D14 is mounted on the linear module D9.

[0034] In a preferred embodiment, Figure 14As shown, the material belt traction mechanism J includes a mounting frame J8, a clamping jaw J5, a clamping jaw rotation drive motor J3, a clamping jaw telescopic drive cylinder J2, a guide rail J1, a motor J6, a synchronous toothed belt J7 and a drive screw J4; wherein: the mounting frame J8 is installed on the guide rail J1, the clamping jaw rotation drive motor J3, the clamping jaw telescopic drive cylinder J2 and the drive screw J4 are installed on the mounting frame J8, the clamping jaw J5 is respectively connected to the clamping jaw rotation drive motor J3, the clamping jaw telescopic drive cylinder J2 and the drive screw J4; the synchronous toothed belt J7 is respectively connected to the mounting frame and the motor J6; the clamping jaw rotation drive motor J3 is used to drive the clamping jaw J5 to rotate a predetermined angle; the clamping jaw telescopic drive cylinder J2 is used to drive the clamping jaw J5 to extend or retract; the drive screw J4 is used to drive the clamping jaw J5 to rise and fall; the motor J6 is used to drive the synchronous toothed belt J7 to drive the mounting frame to move in a straight line on the guide rail J1.

[0035] In a preferred embodiment, Figure 12 As shown, the material belt tensioning mechanism G includes a rear needle wheel G5, a front needle wheel G6, an arc guide rail G2, a rear end material belt tensioning wheel G1, a gear lever G3, a swing cylinder G7, and a front end material belt tensioning wheel G4; wherein: the rear needle wheel G5 and the rear end material belt tensioning wheel G1 cooperate with each other and are installed at one end of the arc guide rail G2, and the front needle wheel G6 and the front end material belt tensioning wheel G4 cooperate with each other and are installed at the other end of the arc guide rail G2, so that the material belt is pressed onto the corresponding rear needle wheel G5 and the front needle wheel G6 through the rear end material belt tensioning wheel G1 and the front end material belt tensioning wheel G4; the rear needle wheel G5 and the front needle wheel G6 are each driven separately by a servo motor (unnumbered), and through the cooperation of the actions of the rear needle wheel G5 and the front needle wheel G6, various functions such as material belt hanging, tensioning, and uniform speed driving can be realized; the rear end material belt tensioning wheel G5 The tension wheel G1 and the front-end material belt tensioning wheel G4 are also driven separately. The rear-end material belt tensioning wheel G1 and the front-end material belt tensioning wheel G4 play the role of pressing the material belt against the corresponding needle wheel to prevent the material belt from falling off the needle. The swing cylinder G7 is connected to the gear lever G3, and is used to drive the gear lever G3 to swing, so as to swing the drooping part of the material belt above the rear needle wheel G5 to prevent it from getting stuck. The arc guide rail G2 is the support of the material belt during operation, and is provided with an arc groove for limiting the material belt so that the material belt is close to the surface of the arc groove when tensioned (the size of the arc is sufficient to allow the material belt to fit on the surface of the arc groove) to prevent the material belt from shaking and deflecting. The setting of the arc guide rail G2 and its arc groove makes the material belt naturally close to the guide rail surface when tensioned. There is no need to add a cover plate to make the material belt close to the guide rail at all places on the guide rail, avoiding vibration and shaking of the material belt caused by lack of tightness.

[0036] In a preferred embodiment, Figure 13a and 13bAs shown, the empty disk winding mechanism H includes two clamping blocks H2, a slot H3, an empty disk H1, a telescopic cylinder H4, two wedge blocks H5 and an empty disk rotation drive cylinder H6; wherein, the two wedge blocks H5 are connected to the telescopic cylinder H4 and are respectively connected to the two clamping blocks H2, and the telescopic cylinder H4 is used to drive the wedge blocks H5 to open or clamp the two clamping blocks H2; the two clamping blocks H2 are used to clamp the tape at the front of the material tape; the empty disk H1 is used to temporarily wind the material tape, and the slot H3 is provided on the disk surface of the empty disk H1 for allowing the tape pulled by the material tape pulling mechanism J to pass through; the empty disk rotation drive cylinder H6 is connected to the empty disk H1 for driving the empty disk to rotate so that the tape is reeled onto or unreeled from the empty disk H1.

[0037] In a preferred embodiment, Figure 15a and 15b As shown, the unloading mechanism E includes a storage bin E6 with a tray support, a guide slide E1, a sensor E3 for detecting the position of the tray, a motor E5 for driving the tray support to rise and fall, and a synchronous toothed belt E4 for driving the tray support to rise and fall; wherein, the guide slide E1 is tilted at the entrance of the storage bin E6, for receiving the tray that has been wound up after detection in the tray push-pull mechanism C; the synchronous toothed belt E4 is respectively connected to the motor E5 and the tray support of the storage bin E6, and the motor E5 drives the synchronous toothed belt E4 to move and drive the tray support to rise and fall; the sensor E3 is used to detect the position of the tray in the storage bin E6 to determine whether unloading is completed.

[0038] When the above SMT tray automatic rewinding and unwinding device is in operation, the tray slides from the feeding mechanism A into the tray guide mechanism B and enters the tray push-pull mechanism C to be positioned. The tray is then pushed into the tray rotation drive mechanism K. The tape tearing and rethreading mechanism D tears the tape from the tray. The tape traction mechanism J pulls the tape through the tape tensioning mechanism G and temporarily rewinds it on the empty winding mechanism H to unwind the tape on the tray. After unwinding is completed, the tail of the tape is again pulled by the tape traction mechanism G through the tape tearing and rethreading mechanism D to the tray rotation drive mechanism K, where it is reversed and rewound back onto the tray. After rewinding is completed, the material is unloaded to the unloading mechanism E. The specific working process is as follows:

[0039] 1. Unwinding process

[0040] Feeding mechanism A: The material trays are manually stacked in a unified direction (horizontally in this case) and placed into the feeding mechanism A. The feeding mechanism A is configured to accommodate 30 material trays at a time (of course, it can also be configured to accommodate more or fewer material trays as needed). The bottom material tray is supported by the bottom tray support plate A2. Before the bottom material tray starts feeding, the lifting arm opening and closing cylinder A4 extends, driving the left and right lifting arms A5 to close and clamp the second material tray at the bottom, and lift the second material tray at the bottom and the trays above it. Subsequently, the cylinder A6 contracts, driving the support plate A2 to swing downward, and the bottom material tray immediately slides down along the inclined support plate A2 and enters the guide mechanism B.

[0041] Guide mechanism B: The sliding tray continues to slide down along the guiding arc-shaped inclined plate B1 of the guide mechanism B, and enters the vertical groove between the arc-shaped inclined plate B1 and the flat panel B2 (in this vertical groove, it is preferred to only carry one tray at a time). At this time, the tray changes from a horizontal state to an upright state, and the tray reaches the inclined guide plate B3, and rolls forward along the inclined guide plate B3, and enters the tray push-pull mechanism C.

[0042] Tray push-pull mechanism C: The tray that rolls down from the guide mechanism B enters the tray push-pull mechanism C. The tray push-pull mechanism C is fixed on four guide shafts C6. Each guide shaft C6 is connected to a linear bearing C7. The guide shaft C6 is guided and carried by the linear bearing C7. Figure 5 As shown, C1 represents the tray that has been rolled into the tray push-pull mechanism. At this time, the position of the center hole of the tray C1 is based on the outer diameter of the tray C1. The space surrounded by the bottom plate C3, the two push-pull plates C5 and the side baffle C2 is limited so that the center hole position of the tray C1 is aligned with the tray rotation drive mechanism K. The tray push-pull mechanism C pushes the tray C1 into and fixes it to the tray rotation drive mechanism K.

[0043] The tray rotation drive mechanism K: The center hole position of the tray C1 in the tray push-pull mechanism C is aligned with the rotation drive shaft K2 of the tray rotation drive mechanism K. At this time, the cylinder K8 of the tray rotation drive mechanism K contracts, driving the block K9 to push the core shaft K6 of the rotation drive shaft K2 forward, and causing the three movable expansion sleeves K12 in the expansion state to contract and loosen. Then the push-pull drive cylinder C8 in the tray push-pull mechanism C pushes the tray C1 forward. When the center of the tray C1 enters the end guide head K10 of the rotation drive shaft K2, the three fixed positioning teeth K11 may not be aligned with the slot of the tray C1 at this time, and the forward movement of the tray C1 will be blocked. At this time, the tray push-pull mechanism The spring C4 of C acts as a buffer. After the material tray C1 is blocked by the positioning tooth K11, the spring C4 will rebound and buffer, preventing the thrust of the push-pull drive cylinder C8 from directly acting on the material tray C1 and squeezing the material tray C1. Subsequently, the rotary drive shaft K2 rotates slowly, and the positioning tooth K11 will gradually align with the slot of the material tray C1 during the rotation process. When it is fully aligned, the material tray C1 can be fully inserted into the rotary drive shaft K2 under the thrust of the spring C4. At this time, the cylinder K8 extends, driving the stopper K9 to release the core shaft K6, so that the movable expansion sleeve K12 expands again and fixes the material tray C1. At this time, the material tray is completely fixed on the rotary drive shaft K2 of the material tray rotation drive mechanism K. Figure 7 As shown, K1 represents the material tray that has been pushed into the rotating drive shaft K2 (ie, corresponding to the material tray C1 mentioned above).

[0044] Tape tearing and back-threading mechanism D: The material tray K1 then starts to rotate on the rotating drive shaft K2 of the material tray rotating drive mechanism K. The tape detection camera A3 located above the material tray rotating drive mechanism K uses visual detection to find the end of the tape (usually yellow tape) on the material tray and position the tape end at the appropriate position (the tape detection camera A3 is part of the visual detection system. It can capture feature information such as the shape and color of objects in the camera's field of view, record their position changes in the field of view, and has graphic pixel calculation capabilities to achieve position detection of the tape end. By rotating the material tray, the tape head rotates, and the corresponding The data returned by the machine detection confirms that the end of the tape is in the predetermined position), and then the tape tearing rocker D2 is driven by the linear module D9 to align with the material tray K1, and the first cylinder D8 drives the tape tearing rocker D2 to swing downward along the first bearing D15 so that the head of the tape tearing rocker D2 (a thin-walled shovel-shaped structure) falls on the end of the tape, and the material tray K1 continues to rotate, driving the tape end to be scooped up by the head of the tape tearing rocker D2, and then the driving cylinder D5 for clamping the tape pushes the tape tearing claw D1 downward to approach the head of the tape tearing rocker D2 and clamp the tape end, and then the first cylinder D8 pushes the tape tearing rocker D2 to swing upward to tear off the tape.

[0045] The tape traction mechanism J: During unwinding, the tape traction mechanism J pulls the front of the tape into the empty coiling mechanism H for clamping. During rewinding, the tape tail is pulled into the guide slot of the tape return rod D4, preventing the tape from bending or getting stuck during unwinding and rewinding. Specifically, after the tape is torn by the tearing rod D2, it is swung upward from the inside of the material tray to the outside of the material tray. Then, the clamping claw J5 of the tape traction mechanism J moves to the side of the torn tape. The clamping claw rotation drive motor J3 rotates the clamping claw J5 to a certain angle, aligning the clamping claw J5 with the tape (because the position of the tape head is basically fixed after the tearing rod D2 tears and lifts the tape, the clamping claw J5 can be aligned with the tape by adjusting the alignment). Then, the clamping claw extension drive cylinder J2 pushes the clamping claw J5 forward toward the tape. The clamping claw J5 then clamps the tape and enters the tape tensioning mechanism G.

[0046] The material belt tensioning mechanism G: The clamping claw J5 in the material belt traction mechanism J pulls the tape through the lifting slot D7, the rear needle wheel G5, the guide rail G2, and the front needle wheel G6. When the front end drooping part of the material belt passes through the rear needle wheel G5, the blocking rod G3 is driven by the swing cylinder G7 to swing, and the drooping part of the material belt is swung above the rear needle wheel G5 to prevent the tape from getting stuck. The material belt is pressed and tensioned tightly against the contoured arc groove of the arc guide rail G2 by the rear end material belt tensioning wheel G1 and the rear needle wheel G5, the front end material belt tensioning wheel G4 and the front needle wheel G6. The clamping claw J5 in the material belt traction mechanism J pulls the tape through the material belt tensioning mechanism G to the empty winding belt mechanism H.

[0047] The empty coil mechanism H is used to temporarily wind the previously unwound, inspected tape (e.g., by using an electron microscope or machine vision system to inspect the tape and its packaged products for missing or damaged items, mix-ups, and orientation) into the empty reel H1 of the empty coil mechanism H. Specifically, when the clamp J5 moves to the empty coil mechanism H, the telescopic cylinder H4 drives the two wedge blocks H5 to open the two clamping blocks H2. The clamp J5 then pulls the tape through the slot H3 to the center hole of the empty reel H1. The two clamping blocks H2 then close to clamp the tape head, and the clamp J5 releases and withdraws. At this point, the tape is attached to the empty reel H1 of the empty coil mechanism H. The empty reel rotation drive cylinder H6 then rotates the empty reel H1, rewinding the tape onto it.

[0048] 2. Winding process

[0049] Used in conjunction with the detection mechanism, the material strip is tested above the guide rail during the unwinding process. After all the strips are tested, they are rewound. The process is as follows:

[0050] When all the tapes are unwound from the material tray K1, the tail end of the tape passes through the lifting slot D7 during the unwinding process and is detected by the tape position detection sensor D6. At this time, the unwinding is paused and the clamp J5 clamps the tail end of the tape. When all the products in the tape are detected, the clamp J5 pulls the tail end of the tape back through the material tray (that is, the tape is rewound onto the material tray K1): First, the linear module D9 in the tape tearing and rewinding mechanism D moves the tape rewinding rod D4 to the center line of the material tray K1 fixed on the rotating drive shaft K2 (that is, the center of the material tray K1). The tape rewinding rod D4 is driven by the second cylinder D12 to swing downward along the second bearing D10, and the end of the tape rewinding rod D4 (that is, the tape pressure head D3) is moved to the center line of the material tray K1 fixed on the rotating drive shaft K2. The front needle wheel G6 and the rear needle wheel G5 drive the material strip from the internal guide groove of the material strip return rod D4 to the material strip return rod D4, and the tail of the material strip extends into the material strip slot of the material tray K1 from the end outlet of the material strip return rod D4 (that is, the head of the material strip return rod D4 where the tape press head D3 is located). Then the material tray K1 and the rear needle wheel G5 rotate in coordination to rewind the material strip onto the material tray K1, and the driving cylinder D13 of the tape press head drives the tape press head D3 to move downward, so that the tape at the front end of the material strip is compacted on the material strip by the tape press head D3, completing the reel winding.

[0051] Unloading mechanism E: When the material strip is completely inspected and completely reeled back into the raw material tray K1, the cylinder K8 in the tray rotation drive mechanism K contracts, driving the block K9 to push the core shaft K6 of the rotation drive shaft K2, and causing the three movable expansion sleeves K12 in the tensioned state to contract and loosen. Then the push-pull drive cylinder C8 of the tray push-pull mechanism C pushes the tray K1 backward, and the tray K1 is disengaged from the rotation drive shaft K2. The bottom plate C3 is opened by the drive cylinder C9, and the tray naturally rolls down along the lowered bottom plate C3 (as shown in the figure). Figure 6 As shown, C10 represents the bottom plate in the downward state (which is Figure 5 The bottom plate C3 is a different state of the same bottom plate), C11 represents the material tray to be unloaded after the winding is completed), and it passes through the guide slide E1 of the unloading mechanism E to the storage bin E6. At this time, the sensor E3 for detecting the position of the material tray detects that there is a material tray (such as Figure 15a In the figure, E2 represents the material tray in the storage bin E6. The motor E5 that drives the material tray support plate to move up and down drives the synchronous toothed belt E4 to move the material tray support plate downward until the sensor E3 detects the absence of the material tray, and the material is unloaded. At this point, the entire unwinding and rewinding process is complete.

[0052] The above is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention should not be considered to be limited to these descriptions. Those skilled in the art will recognize that several equivalent substitutions or obvious variations can be made without departing from the scope of the present invention, and that any equivalent performance or application should be considered to fall within the scope of protection of the present invention.

Claims

1. An automatic SMT material tray reeling and unreeling device, characterized in that: The device comprises a workbench (F), a feeding mechanism (A) located on the top surface of the workbench (F), a tray guiding mechanism (B), a tray pushing and pulling mechanism (C), a tray rotating driving mechanism (K), a tape tearing and rethreading mechanism (D), a tape tensioning mechanism (G), an empty coiling mechanism (H) and a tape pulling mechanism (J), and a material unloading mechanism (E) located on the bottom surface of the workbench (F); wherein: The feeding mechanism (A), the tray guiding mechanism (B), and the unloading mechanism (E) are arranged from top to bottom on the same side of the workbench (F); the tray rotating driving mechanism (K), the tape tearing and rethreading mechanism (D), the tensioning mechanism (G), and the empty coil winding mechanism (H) are arranged side by side to form a linear working area, and the tape traction mechanism (J) is used to move in an area parallel to the linear working area to traction the tape; The feeding mechanism (A) is used to feed the tray guide mechanism (B) tray by tray; The tray guide mechanism (B) is used to turn the tray into an upright state and guide the tray into the tray push-pull mechanism (C); The tray push-pull mechanism (C) is used to push the tray into or out of the tray rotation drive mechanism (K), and to deliver the wound tray into the unloading mechanism (E); The tray rotation drive mechanism (K) is used to drive the tray to rotate so as to retract and release the material strip; The tape tearing and re-threading mechanism (D) is used to tear off the tape at the front of the tape or to guide the tail of the tape into the slot of the tray; The material tape pulling mechanism (J) is used to pull the front portion of the material tape, which has been torn off by the tape tearing and re-threading mechanism (D), into the empty coiling mechanism (H) for clamping during unwinding, and to pull the rear portion of the material tape into the tape tearing and re-threading mechanism (D) during rewinding; The strip tensioning mechanism (G) is used to drive the strip to unwind and rewind at a uniform speed, ensure the strip is tensioned and prevent the strip from shaking; The empty coiling belt mechanism (H) is used to temporarily coil the inspected material belt; The unloading mechanism (E) is used to receive the material tray that has been wound up after inspection in the material tray pushing and pulling mechanism (C); The tape tearing and rewinding mechanism (D) includes a bracket (D14), a tape tearing swing arm (D2), a tape tearing claw (D1), a driving cylinder (D5) for clamping the tape, a tape pressing head (D3), a driving cylinder (D13) for the tape pressing head, a tape rewinding rod (D4), a linear module (D9), a lifting slot (D7) for unwinding the tape, a tape position detection sensor (D6), a first bearing (D15), a first cylinder (D8), a second cylinder (D12), and a second bearing (D10); wherein: The head of the tape tearing rocker (D2) is a shovel-shaped structure, and the interior of the tape re-threading rod (D4) is provided with a guide groove for allowing the tape to slide along the guide groove, and the trumpet-shaped notch (D11) of the guide groove is located at the tail of the tape re-threading rod (D4); The driving cylinder (D5) for clamping the tape is installed on the tape-tearing swing rod (D2) and connected to the clamping claw (D1). The clamping claw (D1) for tearing the tape is installed on the tape-tearing swing rod (D2) and is located above the shovel-shaped structure. The driving cylinder (D5) for clamping the tape is used to drive the clamping claw (D1) to clamp the end of the tape. The tail of the tape-tearing swing rod (D2) is installed on the bracket (D14) through the first bearing (D15). The first cylinder (D8) is used to drive the tape-tearing swing rod (D2) to rotate a predetermined angle along the first bearing (D15). The tape pressing head (D3) is mounted on the tape re-threading rod (D4) and is located at the head of the tape re-threading rod (D4); the driving cylinder (D13) of the tape pressing head is connected to the tape pressing head (D3) and is used to drive the tape pressing head (D3) to press the tape; the tail of the tape re-threading rod (D4) is mounted on the bracket (D14) via a second bearing (D10); the second cylinder (D12) is used to drive the tape re-threading rod (D4) to rotate along the second bearing (D10) to a predetermined angle; The lifting slot (D7) is installed on the bracket (D14) and is located outside the material strip return rod (D4); the detection sensor (D6) is installed on the lifting slot (D7); The bracket (D14) is mounted on the linear module (D9); The empty disk winding mechanism (H) comprises two clamping blocks (H2), a slot (H3), an empty disk (H1), a telescopic cylinder (H4), two wedge blocks (H5) and an empty disk rotation drive cylinder (H6); wherein: The two wedge blocks (H5) are connected to the telescopic cylinder (H4) and are respectively connected to the two clamping blocks (H2); the telescopic cylinder (H4) is used to drive the wedge block (H5) to open or clamp the two clamping blocks (H2); The two clamping blocks (H2) are used to clamp the tape at the front of the material strip; The empty disk (H1) is used for temporarily winding the material tape, and the groove (H3) is provided on the disk surface of the empty disk (H1) for allowing the tape pulled by the material tape pulling mechanism (J) to pass through; The empty disk rotation driving cylinder (H6) is connected to the empty disk (H1) and is used to drive the empty disk to rotate so that the roll is wound onto the empty disk (H1) or unwound from the empty disk (H1).

2. The SMT tray automatic rewinding and unwinding device according to claim 1, characterized in that: The feeding mechanism (A) includes a frame (A7), a cylinder (A6), a tray storage portion (A1), two lifting arms (A5), a lifting arm opening and closing cylinder (A4), a tape detection camera (A3) at the front of the material strip, and a support plate (A2); wherein: The frame (A7) is mounted on the workbench (F), and the tray storage portion (A1) is located on the tabletop of the frame (A7); the tape detection camera (A3) is mounted on the frame (A7) and located above the tray rotation drive mechanism (K), and is used to detect and locate the position of the tape at the front of the tape so as to locate the working position of the tape tearing and rethreading mechanism (D); The support plate (A2) is located on the bottom surface of the tray storage portion (A1); one end of the cylinder (A6) is connected to the support plate (A2), and the other end is connected to the frame (A7), so as to drive the support plate (A2) to open downward to a predetermined angle so that the tray slides from the bottom of the tray storage portion (A1) through the support plate (A2) into the tray guide mechanism (B); The two lifting arms (A5) and the lifting arm opening and closing cylinder (A4) are both mounted on the frame (A7). The two lifting arms (A5) are driven by the lifting arm opening and closing cylinder (A4) to close and clamp the material tray or open and release the material tray.

3. The automatic SMT tray reeling and unreeling device according to claim 1, characterized in that: The tray guide mechanism (B) comprises an arc-shaped inclined plate (B1), a flat plate (B2) and an inclined guide plate (B3). A vertical groove is formed between the convex surface of the arc-shaped inclined plate (B1) and the flat plate (B2). The inclined guide plate (B3) is located in the vertical groove. The convex surface of the arc-shaped inclined plate (B1) is used to receive the tray that slides in from the feeding mechanism (A). The inclined guide plate (B3) is used to allow the tray that has become upright in the vertical groove to roll on it and enter the tray push-pull mechanism.

4. The automatic SMT tray reeling and unreeling device according to claim 1, characterized in that: The tray push-pull mechanism (C) includes a bottom plate (C3), a side baffle (C2), two push-pull plates (C5), a push-pull drive shaft (C13), a spring (C4), a guide shaft (C6), a linear bearing (C7), a push-pull drive cylinder (C8), and a drive cylinder (C9); wherein: The bottom plate (C3), the side baffles (C2) and the two push-pull plates (C5) together constitute a space for keeping the material tray in an upright state; the bottom plate (C3) is openably connected to the bottom between the two push-pull plates (C5); and the side baffles (C2) are connected to the rear between the two push-pull plates (C5); The driving cylinder (C9) is used to drive the bottom plate (C3) to open downward to a predetermined angle so as to discharge the material from the tray; One end of the guide shaft (C6) is connected to one of the push-pull plates (C5), the other end of the guide shaft (C6) is connected to the linear bearing (C7), one end of the push-pull drive shaft (C13) is connected to the push-pull drive cylinder (C8), and the other end of the push-pull drive shaft (C13) is connected to the core shaft at the center of the spring (C4); The push-pull drive cylinder (C8) is used to drive the two push-pull plates (C5) to move forward and backward as a whole, so that when it is pushed, it is connected to the material tray rotation drive mechanism (K), and when it is pulled, it is separated from the material tray rotation drive mechanism (K).

5. The automatic SMT tray reeling and unreeling device according to claim 1, characterized in that: The tray rotation drive mechanism (K) includes a rotation drive shaft (K2), a cylinder (K8) and a stopper (K9); wherein the rotation drive shaft (K2) includes a core shaft (K6), three movable expansion sleeves (K12), an end guide head (K10) and three fixed positioning teeth (K11); the end guide head (K10) is located at the end of the rotation drive shaft (K2), the three fixed positioning teeth (K11) are located at intervals outside the rotation drive shaft (K2), and the three movable expansion sleeves (K12) are respectively installed at the intervals between the three fixed positioning teeth (K11) and cooperate with the inclined surfaces of the positioning teeth (K11); The cylinder (K8) is used to drive the stopper (K9) to push the core shaft (K6) forward so that the three movable expansion sleeves (K12) are loosened, or the core shaft (K6) is loosened so that the three movable expansion sleeves (K12) are loosened or expanded; The three movable expansion sleeves (K12) are used to expand and contract as the core shaft (K6) expands and contracts to achieve the expansion and loosening of the material tray, and the three fixed positioning teeth (K11) are respectively used to be inserted into the three positioning grooves of the material tray to position the material tray.

6. The automatic SMT tray reeling and unreeling device according to claim 1, characterized in that: The material belt traction mechanism (J) includes a mounting frame (J8), a clamping claw (J5), a clamping claw rotation drive motor (J3), a clamping claw telescopic drive cylinder (J2), a guide rail (J1), a motor (J6), a synchronous toothed belt (J7) and a drive screw (J4); wherein: The mounting frame (J8) is mounted on the guide rail (J1), the jaw rotation drive motor (J3), the jaw telescopic drive cylinder (J2) and the drive screw (J4) are mounted on the mounting frame (J8), the jaw (J5) is respectively connected to the jaw rotation drive motor (J3), the jaw telescopic drive cylinder (J2) and the drive screw (J4); the synchronous toothed belt (J7) is respectively connected to the mounting frame and the motor (J6); The clamping jaw rotation drive motor (J3) is used to drive the clamping jaw (J5) to rotate a predetermined angle; The clamping jaw extension and retraction driving cylinder (J2) is used to drive the clamping jaw (J5) to extend or retract; The driving screw (J4) is used to drive the clamping claw (J5) to rise and fall; The motor (J6) is used to drive the synchronous toothed belt (J7) to drive the mounting frame to move in a straight line on the guide rail (J1).

7. The automatic SMT tray reeling and unreeling device according to claim 1, characterized in that: The material belt tensioning mechanism (G) includes a rear needle wheel (G5), a front needle wheel (G6), an arc guide rail (G2), a rear end material belt pressing wheel (G1), a gear lever (G3), a swing cylinder (G7), and a front end material belt pressing wheel (G4); wherein: The rear needle wheel (G5) and the rear end material belt pressing wheel (G1) cooperate with each other and are installed on one end of the arc guide rail (G2), and the front needle wheel (G6) and the front end material belt pressing wheel (G4) cooperate with each other and are installed on the other end of the arc guide rail (G2), so that the material belt is pressed onto the corresponding rear needle wheel (G5) and the front needle wheel (G6) through the rear end material belt pressing wheel (G1) and the front end material belt pressing wheel (G4); The swing cylinder (G7) is connected to the gear lever (G3) and is used to drive the gear lever (G3) to swing so as to swing the drooping portion of the material belt above the rear needle wheel (G5) to prevent the belt from getting stuck; The arc-shaped guide rail (G2) is provided with an arc-shaped groove for limiting the material strip.

8. The automatic SMT tray reeling and unreeling device according to claim 1, characterized in that: The unloading mechanism (E) includes a storage bin (E6) with a tray support, a guide slide (E1), a sensor (E3) for detecting the position of the tray, a motor (E5) for driving the tray support to rise and fall, and a synchronous toothed belt (E4) for driving the tray support to rise and fall; wherein, The guide slide (E1) is tiltedly arranged at the entrance of the storage bin (E6) and is used to receive the material tray that has been wound up after inspection from the material tray push-pull mechanism (C); The synchronous toothed belt (E4) is connected to the motor (E5) and the tray support plate of the storage bin (E6) respectively, and the motor (E5) drives the synchronous toothed belt (E4) to move and drive the tray support plate to rise and fall; The sensor (E3) is used to detect the position of the material tray in the storage bin (E6) to determine whether the material unloading is completed.

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