Device for automatic release of a strip, cover

Abstract

The utility model provides a device of automatic putting pressure strip, apron relates to SMT (surface mount technology) equipment field, aims at solving the problem of low efficiency, high cost and easy to damage product of manual placement pressure strip, apron in SMT production. The device includes belt conveyor, support, blocking unit, partial packing unit, is equipped with carrier in place inductor, pressure strip inductor, apron inductor and positioning cylinder still, belt conveyor conveys product carrier, and the support is fixed in the upper portion of conveyor and is equipped with storage cavity in the inside to place pressure strip, apron, two blocking units are symmetrically arranged in the both sides of support, contain clamp jaw cylinder, blocking cylinder and L-shaped blocking plate, two partial packing units are alternately spaced apart with blocking unit, contain partial pressure strip cylinder and cross partial packing plate. Through the cooperation of each component, realize the automatic placement of pressure strip, apron, be applicable to SMT carrier, improve production efficiency, reduce manual cost.

Description

Technical Field

[0001] This utility model relates to the field of surface mount technology, specifically to a device for automatically releasing pressure strips and cover plates. Background Technology

[0002] In the SMT (Surface Mount Technology) production process, the SMT carrier, as a key component supporting the PCB (Printed Circuit Board), needs to be used in conjunction with pressure strips and covers to ensure the stability of the PCB during transportation and processing, preventing PCB displacement or damage. Especially after solder paste printing, the precise placement of pressure strips and covers is crucial to the quality of subsequent assembly processes. Currently, the industry still widely uses manual online operation for placing pressure strips and covers on SMT carriers. Operators must manually place the pressure strips and covers one by one onto the moving SMT carrier, a method with significant drawbacks. During manual placement, the placement of pressure strips and cover plates is prone to deviation due to factors such as the operator's hand stability, skill level, and fatigue. This can not only cause the pressure strips to scrape the solder paste already printed on the PCB surface (i.e., "scraping"), resulting in PCB scrap, but also require additional manpower to adjust the misplaced pressure strips and cover plates, further increasing the complexity of the production process. At the same time, the efficiency of manual operation is limited by the speed of personnel movement. A single SMT production line often requires multiple operators to work in shifts to meet the production rhythm requirements. This not only significantly increases the company's labor costs, but also faces problems such as the difficulty in recruiting workers and the lack of production stability caused by high staff turnover in the current manufacturing industry.

[0003] As the SMT industry moves towards automation and intelligence, higher demands are being placed on the efficiency, precision, and versatility of production equipment. While some existing technologies attempt to automate placement, most suffer from complex structures and poor adaptability, making it difficult to accommodate different specifications of SMT carriers, pressure strips, and covers. Some solutions are only designed for a single model of pressure strip or cover; when production needs switch to different specifications, large-scale modifications or replacement of core components are required, increasing equipment investment costs and extending production changeover time, failing to meet the flexible production needs of enterprises with multiple varieties and small batches. Furthermore, some automation solutions lack effective sensing and positioning mechanisms, making it difficult to accurately determine the position of SMT carriers and the placement status of pressure strips and covers, leading to problems such as missed placement, excessive placement, or tilted placement, still requiring manual inspection and failing to truly achieve full-process automation, thus failing to fundamentally solve the pain points of manual operation. Therefore, developing a device with a simple structure, strong adaptability, and capable of stably automating the placement of SMT carrier pressure strips and covers has become an urgent need in the current SMT production field. Utility Model Content

[0004] To address the aforementioned technical shortcomings, the purpose of this utility model is to provide an automatic device for releasing pressure strips and cover plates, thereby improving production efficiency and reducing labor costs.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An automatic pressure bar and cover plate release device, comprising:

[0007] Belt conveyors are used to transport product carriers.

[0008] The support frame is fixed above the belt conveyor; the interior of the support frame is equipped with storage cavities for placing pressure strips and cover plates.

[0009] Two blocking units are configured, symmetrically arranged on both sides of the bracket; each blocking unit includes a gripper cylinder, a blocking cylinder, and a blocking plate; the gripper cylinder is fixed on the bracket; the blocking cylinder is located below the gripper cylinder; the piston rod of the gripper cylinder is fixedly connected to the blocking cylinder; the piston rod of the blocking cylinder is oriented towards the storage cavity; the blocking plate is fixed on the piston rod of the blocking cylinder; the cross-sectional shape of the blocking plate is L-shaped.

[0010] There are two dispensing units, symmetrically arranged on both sides of the support; two blocking units and two dispensing units are alternately arranged on the side of the support; the dispensing unit includes a pressure bar cylinder and a dispensing plate; the pressure bar cylinder is fixed on the support; the piston rod of the pressure bar cylinder is oriented towards the storage cavity; the dispensing plate is fixed on the piston rod of the pressure bar cylinder; the cross-sectional shape of the dispensing plate is cross-shaped.

[0011] Preferably, a guide slope is integrally provided on the upper end of the packaging plate facing the storage cavity.

[0012] Preferably, the bracket includes horizontal plates and vertical plates; four vertical plates are configured; the four vertical plates are arranged in parallel and spaced apart to form the four sides of the cuboid frame; multiple horizontal plates are configured; the horizontal plates are arranged between two adjacent vertical plates, and their two ends are fixedly connected to the two vertical plates respectively.

[0013] Preferably, it also includes a carrier positioning sensor; located on one side of the gripper cylinder and fixed to the longitudinal plate.

[0014] Preferably, it also includes a pressure bar sensor; the pressure bar sensor is located on one side of the pressure bar cylinder and fixed on the horizontal plate.

[0015] Preferably, it also includes cover plate sensors; the cover plate sensors are spaced apart on one side of the bracket and fixed on the belt conveyor.

[0016] Preferably, it also includes positioning cylinders; the positioning cylinders are spaced apart on one side of the bracket and fixed on the belt conveyor; the cover plate sensor is located between the bracket and the positioning cylinders; the piston rod of the positioning cylinder is arranged facing upward; a positioning plate is fixedly arranged on the piston rod of the positioning cylinder.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This device, through the cooperation of a positioning cylinder and a carrier positioning sensor, allows the piston rod of the positioning cylinder to extend upwards and drive the positioning plate to press against the SMT carrier, accurately fixing the carrier position and preventing the carrier from shifting during the placement of pressure strips and cover plates. At the same time, the L-shaped blocking plate in the blocking unit can stably support a single pressure strip or cover plate, and the cross-shaped dispensing plate in the dispensing unit can accurately insert into the gaps between stacked pressure strips and cover plates to achieve single-group separation. The two work together to ensure that the pressure strips and cover plates are placed vertically to the designated position on the carrier, effectively avoiding the "smearing" problem caused by positional deviation during manual placement, and protecting the PCB and surface components from damage.

[0019] The entire device is designed around automation. The belt conveyor automatically transports the carrier, and the cover plate sensor and pressure bar sensor detect the status of the carrier and materials in real time and provide feedback signals. Each cylinder automatically completes actions such as separation, lifting, and lowering according to the signals. The placement process of pressure bars and cover plates can be completed without human intervention, replacing the traditional manual operation mode, reducing the number of personnel required, lowering the labor costs of enterprises, and avoiding repetitive labor such as frequent bending over and holding materials, which greatly reduces labor intensity and solves the problem of labor shortage.

[0020] The support consists of longitudinal and transverse plates. The longitudinal plates form the frame frame, and the transverse plates can be adjusted in installation position according to the specifications of the pressure strips and cover plates to accommodate materials of different sizes. The blocking unit and the dispensing unit are symmetrically and alternately arranged on both sides of the support. By adjusting the action parameters of the gripper cylinder and the pressure strip cylinder, it can accommodate pressure strips and cover plates of different thicknesses. Production needs can be switched without large-scale equipment modifications. It is suitable for production scenarios of multi-specification SMT carriers, improving the versatility and flexible production capabilities of the device.

[0021] The actions of each component of the device are controlled by signal linkage, and the process is standardized to avoid fluctuations in placement efficiency caused by individual differences during manual operation. The pressure strip sensor can monitor the remaining amount of pressure strips and cover plates in the storage cavity in real time, which facilitates timely replenishment and reduces production interruptions caused by material shortages. At the same time, the automated action speed is stable and can be adjusted according to the production rhythm. Compared with manual operation, it significantly shortens the processing time of a single carrier, improves the overall production efficiency, and ensures the continuous and stable operation of the SMT production line. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the usage state of this utility model;

[0024] Figure 3 This is a schematic diagram of the sub-packaging plate in this utility model.

[0025] in:

[0026] 1. Belt conveyor; 2. Packing plate; 3. Longitudinal plate; 4. Horizontal plate; 5. Gripper cylinder; 6. Positioning plate; 7. Positioning cylinder; 8. Blocking cylinder; 9. Cover plate sensor; 10. Blocking plate; 11. Carrier positioning sensor; 12. Pressure bar sensor; 13. Pressure bar cylinder; 14. Guide ramp. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings.

[0028] like Figures 1 to 3 As shown, an automatic pressure bar and cover plate release device includes:

[0029] Belt conveyor 1, used for conveying product carriers;

[0030] The bracket is fixed above the belt conveyor 1; the inside of the bracket is provided with a storage cavity for placing pressure strips and cover plates;

[0031] Two blocking units are configured, symmetrically arranged on both sides of the bracket; the blocking unit includes a gripper cylinder 5, a blocking cylinder 8, and a blocking plate 10; the gripper cylinder 5 is fixed on the bracket; the blocking cylinder 8 is located below the gripper cylinder 5; the piston rod of the gripper cylinder 5 is fixedly connected to the blocking cylinder 8; the piston rod of the blocking cylinder 8 is oriented towards the storage cavity; the blocking plate 10 is fixed on the piston rod of the blocking cylinder 8; the cross-sectional shape of the blocking plate 10 is L-shaped.

[0032] There are two dispensing units, symmetrically arranged on both sides of the support; two blocking units and two dispensing units are alternately arranged on the side of the support; the dispensing unit includes a pressure bar cylinder 13 and a dispensing plate 2; the pressure bar cylinder 13 is fixed on the support; the piston rod of the pressure bar cylinder 13 is oriented towards the storage cavity; the dispensing plate 2 is fixed on the piston rod of the pressure bar cylinder 13; the cross-sectional shape of the dispensing plate 2 is cross-shaped.

[0033] Furthermore, a guide slope 14 is integrally provided on the upper end of the packaging plate 2 facing the storage cavity.

[0034] Furthermore, the support includes horizontal plates 4 and vertical plates 3; there are four vertical plates 3; the four vertical plates 3 are arranged in parallel and spaced apart to form the four sides of the cuboid frame; there are multiple horizontal plates 4; the horizontal plates 4 are arranged between two adjacent vertical plates 3, and their two ends are fixedly connected to the two vertical plates 3 respectively.

[0035] Furthermore, it also includes a vehicle positioning sensor 11, located on one side of the gripper cylinder 5 and fixed to the longitudinal plate 3.

[0036] Furthermore, it also includes a pressure bar sensor 12; the pressure bar sensor 12 is located on one side of the pressure bar cylinder 13 and fixed on the horizontal plate 4.

[0037] Furthermore, it also includes cover plate sensors 9; cover plate sensors 9 are spaced apart on one side of the bracket and fixed on the belt conveyor 1.

[0038] Furthermore, it also includes positioning cylinders 7; positioning cylinders 7 are spaced apart on one side of the bracket and fixed on the belt conveyor 1; cover plate sensor 9 is located between the bracket and positioning cylinders 7; the piston rod of positioning cylinder 7 is set upward; a positioning plate 6 is fixedly installed on the piston rod of positioning cylinder 7.

[0039] The working principle of this automatic pressure strip and cover plate placement device revolves around "precise carrier positioning → single-group separation of stacked parts → stable lowering of individual components → carrier release cycle". Combined with the coordinated actions of each core component, it achieves automated placement of pressure strips and cover plates. The specific process is explained in detail in 6 steps:

[0040] 1. Initial state preparation

[0041] Before starting the device, basic preparations must be completed:

[0042] Material pre-loading: Stack the pressure strips / covers to be used in the "storage cavity" inside the bracket (pressure strips or cover plates can be switched according to production needs, reflecting the "multi-purpose" characteristic);

[0043] Component reset: All cylinders (blocking cylinder 8, pressure bar cylinder 13, positioning cylinder 7, etc.) are in the "retracted reset" state, the L-shaped blocking plate 10 and the cross-shaped dispensing plate 2 are not inserted into the storage cavity, and the belt conveyor 1 is in the standby state.

[0044] 2. Vehicle transport and precise positioning

[0045] The carrier (used to carry SMT products / PCB boards) is conveyed downwards from the device via belt conveyor 1. The key at this stage is to ensure the carrier is in a fixed position, providing a precise reference for subsequent placement operations.

[0046] Preliminary inspection: When the vehicle approaches the support, the "cover sensor 9" fixed on the belt conveyor 1 detects the vehicle first, triggering the belt conveyor 1 to slow down and prevent the vehicle from hitting the device.

[0047] Positioning and fixing: When the vehicle continues to move forward to directly under the support, the "positioning cylinder 7" is activated - the piston rod extends upward, driving the "positioning plate 6" at the top to rise and press and fix it from the side / bottom of the vehicle to prevent the vehicle from shifting;

[0048] Position confirmation: The "carrier positioning sensor 11" fixed on the longitudinal plate 3 of the bracket detects that the carrier has been fully positioned and sends a "carrier ready" signal to the control system, triggering the subsequent separation action of the pressure strip / cover plate.

[0049] 3. Single-unit separation of stacked pressure strips / covers

[0050] Since the storage cavity contains stacked pressure strips / covers, the "bottom one" must first be separated from the "upper stacked part" to prevent multiple items from falling at the same time. This step is completed by the "disassembly unit":

[0051] Sub-packing plate 2 extends in: After the control system receives the "carrier ready" signal, it starts the "pressure bar cylinder 13" - the piston rod extends towards the storage cavity, driving the "cross-shaped sub-packing plate 2" to be inserted between the stacked pressure bars / cover plates (the insertion position is the gap between the "bottom 1" and the "top 2").

[0052] Auxiliary guidance: The "guide slope 14" at the upper end of the packaging plate 2 can reduce insertion resistance, avoid jamming the stacked pressure strips / cover plates, and ensure that the packaging plate 2 is accurately inserted into the gap;

[0053] Separation effect: The structure of the cross-shaped packaging plate 2 can stably support the stacked pressure strips / covers above, while separating the bottom pressure strip / cover separately to prepare for subsequent placement.

[0054] 4. Obstruction support and preparation for lowering

[0055] To prevent individual pressure strips / covers from falling off prematurely after separation, the "blocking unit" needs to provide temporary support in a timely manner to ensure that the timing of its lowering is controllable:

[0056] Baffle 10 extends: While the pressure bar cylinder 13 remains extended (supporting the stacked components above), the "blocking cylinder 8" actuates—the piston rod extends toward the storage cavity, driving the "L-shaped baffle 10" to move "below the separated individual pressure bar / cover plate" to form a temporary support;

[0057] Position calibration: If the position of the baffle plate 10 is deviated, the "gripper cylinder 5" fixed on the bracket can finely adjust the lateral position of the baffle cylinder 8 to ensure that the L-shaped baffle plate 10 fully supports the single pressure strip / cover plate (avoiding the edge being suspended and causing tilting).

[0058] Pressure bar detection: The "pressure bar sensor 12" fixed on the bracket horizontal plate 4 detects that "a single pressure bar / cover plate has been lifted by the blocking plate 10" and sends a "can be lowered" signal to the control system.

[0059] 5. Precise placement of individual pressure strips / cover plates

[0060] This stage is the core execution step, where the orderly repositioning of the cylinders ensures the stable placement of the pressure strip / cover plate onto the carrier.

[0061] Release stacked components: After receiving the "can be lowered" signal, the control system first controls the "pressure strip cylinder 13" to retract and reset - the cross-shaped dispensing plate 2 is withdrawn from the stacking gap, and the pressure strip / cover plate stacked above naturally falls on the L-shaped baffle plate 10 due to the loss of support (but at this time the baffle plate 10 still supports the "single + stacked" parts, which need to be further separated).

[0062] Individual lowering: Immediately afterwards, control the "blocking cylinder 8" to retract and reset - the L-shaped blocking plate 10 is withdrawn from under the single pressure bar / cover plate, and the "single pressure bar / cover plate" that has lost its support falls vertically onto the vehicle that has been positioned below under the action of gravity (because the vehicle has been fixed, the placement position deviation is minimal);

[0063] Placement confirmation: Pressure bar sensor 12 checks again to confirm that the pressure bar / cover plate has been successfully placed on the carrier (without falling or tilting), and sends a "placement complete" signal to the control system.

[0064] 6. Vehicle release and device circulation

[0065] After each pressure bar / cover plate is placed, the device resets and releases the carrier, entering the next work cycle:

[0066] Carrier release: After receiving the "placement complete" signal, the control system controls the "positioning cylinder 7" to retract and reset - the positioning plate 6 descends, releasing the carrier from fixation; at the same time, the belt conveyor 1 starts, transporting the carrier with the pressure strip / cover plate to the next SMT process (such as solder paste printing, chip mounting, etc.).

[0067] Device reset: All cylinders (blocking cylinder 8, pressure bar cylinder 13, etc.) return to their initial retracted state. The L-shaped blocking plate 10 and the cross-shaped dispensing plate 2 are retracted to the side of the support. The remaining stacked pressure bars / covers in the storage cavity fall due to gravity and wait for the next carrier to arrive before repeating the above process.

[0068] Example 1: Automated placement of SMT carrier pressure strips (for post-PCB solder paste printing processes)

[0069] 1. Application Scenarios

[0070] This embodiment applies to the placement of pressure strips after solder paste printing on PCB boards in an SMT production line. In traditional manual operation, workers must manually place the pressure strips one by one onto the edge of the PCB board on the SMT carrier. This is not only prone to slippage and solder paste scraping due to hand tremors (i.e., "smearing"), but also requires frequent bending over, resulting in high labor intensity. Furthermore, each production line requires 2-3 workers in shifts, leading to high labor costs. This device can replace manual labor, achieving precise and automated placement of the pressure strips.

[0071] 2. Device configuration adjustment

[0072] Based on the device structure described in the manual, and considering the characteristics of the SMT carrier, the following adaptations are made:

[0073] Bracket and storage cavity: The height of the vertical plate 3 of the bracket is adjusted to 30cm (to match the transport height of the SMT carrier). The internal dimensions of the storage cavity are designed according to the specifications of the pressure strip (20cm long × 3cm wide × 0.5cm thick). The inner circumference is lined with wear-resistant nylon pads to prevent scratches caused by friction when the pressure strips are stacked.

[0074] Sensor calibration: Carrier positioning sensor 11 uses a diffuse reflection photoelectric sensor with a sensing distance of 5cm to ensure accurate signal triggering when the SMT carrier (35cm long × 25cm wide) is fully under the bracket; Pressing strip sensor 12 uses a fiber optic sensor, installed at the bottom of the storage cavity, to detect the remaining quantity of pressing strips (issues a replenishment reminder when the remaining quantity is ≤5).

[0075] Cylinder parameter settings: The stroke of blocking cylinder 8 is set to 8cm to ensure that the L-shaped blocking plate 10 can fully support a single pressure strip; the stroke of pressure strip dispensing cylinder 13 is set to 5cm, and the insertion gap of the cross-shaped dispensing plate 2 is controlled at 0.6cm (slightly larger than the thickness of the pressure strip) to avoid jamming or missing dispensing; the piston rod of positioning cylinder 7 is set to rise to 4cm, which just presses against the positioning hole on the side of the SMT carrier to prevent the carrier from shifting during placement.

[0076] 3. Work Process

[0077] Material and carrier preparation: Stack 50 SMT-specific pressure strips in the storage cavity. The SMT carrier carries the PCB board (model: FR-4) after solder paste printing and transports it through belt conveyor 1 at a speed of 1m / min.

[0078] Carrier positioning: The cover plate sensor 9 (diffuse reflection type) first detects the carrier, and the belt conveyor 1 slows down to 0.3m / min; the carrier continues to move forward to directly under the support, the positioning cylinder 7 is activated, the positioning plate 6 is pressed against the carrier positioning hole, and the carrier positioning sensor 11 sends a "ready" signal.

[0079] Pressure strip separation and lowering: Pressure strip cylinder 13 extends, and cross-shaped dispensing plate 2 is inserted into the gap between the bottommost pressure strip and the stacked pressure strips above, supporting the 49 pressure strips above; blocking cylinder 8 extends, and L-shaped blocking plate 10 supports the bottommost pressure strip; then pressure strip cylinder 13 retracts, blocking cylinder 8 slowly retracts, and the pressure strip falls vertically to the edge of the PCB board of the SMT carrier (deviation ≤0.2cm);

[0080] Carrier release and circulation: The pressure strip sensor 12 confirms that the pressure strip has been placed, the positioning cylinder 7 retracts, the belt conveyor 1 resumes its speed of 1m / min, and the carrier is transported to the next patching process; at the same time, the blocking cylinder 8 and the pressure strip distributing cylinder 13 are reset, the remaining pressure strips in the storage cavity fall down, and wait for the next carrier to arrive, and repeat the above process.

[0081] 4. Implementation Results

[0082] Efficiency improvement: 120 SMT carriers can be placed per hour, which is 100% faster than manual operation (60 pieces / hour);

[0083] Quality assurance: The placement deviation of the pressure strip is ≤0.2cm, and the defect rate of the "sandwich" is reduced from 8% by manual labor to below 0.5%;

[0084] Cost savings: Each production line can reduce the number of workers by 2, saving approximately 150,000 yuan in labor costs annually.

[0085] Example 2: Automated placement of SMT carrier cover (for post-PCB board surface mount protection process)

[0086] 1. Application Scenarios

[0087] This embodiment applies to the cover plate placement process after PCB board mounting in an SMT production line. The surface of the mounted PCB board has small electronic components (such as resistors and capacitors), which need to be covered by cover plates on the SMT carrier to prevent damage during transportation. Traditional manual cover plate placement is prone to component damage due to cover plate tilting, and the various cover plate sizes (requiring adaptation to different PCB boards) necessitate adjustments to the operating method when manually switching between cover plates, resulting in poor flexibility. This device can achieve automated protection by easily adjusting and adapting to various cover plates.

[0088] 2. Device configuration adjustment

[0089] Based on the device structure described in the instruction manual, the following adaptations are made to suit the characteristics of the cover plate:

[0090] Support and storage cavity: The spacing of the support cross plates 4 is designed according to the size of the cover plate (optional 30cm long × 22cm wide × 0.3cm thick or 25cm long × 18cm wide × 0.3cm thick), and the cross plates 4 are adjustable (fixed by bolts, adjustment range 20-35cm) to meet the needs of multiple cover plate sizes; the bottom of the storage cavity is equipped with cushioning sponge to prevent damage from collision when the cover plate falls;

[0091] Sensor and packaging plate 2 optimization: The cover sensor 9 adopts a through-beam photoelectric sensor, which is installed on both sides of the belt conveyor 1 with a detection distance of 30cm to adapt to SMT carriers of different widths; the cross-shaped structure of the packaging plate 2 is retained, and the angle of the upper guide slope 14 is increased to 45° to facilitate the smooth insertion and separation of the cover plate (which is thinner than the pressure strip).

[0092] Cylinder parameter adjustment: The stroke of the blocking cylinder 8 is set to 6cm, and a silicone pad is pasted on the surface of the L-shaped blocking plate 10 to increase the friction with the cover plate and prevent the cover plate from slipping off; the action speed of the pressure bar cylinder 13 is slowed down to 5cm / s to avoid rapid insertion that could cause the cover plate to deform.

[0093] 3. Work Process

[0094] Material and carrier preparation: According to the current PCB board specifications, adjust the spacing of the support cross plate 4, and stack 30 suitable SMT carrier cover plates in the storage cavity; the SMT carrier carries the PCB board after placement and is transported by belt conveyor 1 at a speed of 0.8m / min.

[0095] Carrier positioning: The through-beam cover sensor 9 detects the carrier, and the belt conveyor 1 slows down to 0.2m / min; the carrier moves forward to the bottom of the support, the positioning cylinder 7 is activated (the piston rod rises 3cm to match the height of the cover placement), and the carrier positioning sensor 11 sends a "ready" signal.

[0096] Cover plate separation and lowering: The pressure strip cylinder 13 slowly extends, and the cross-shaped dispensing plate 2 is inserted into the gap between the bottom cover plate and the stacked cover plates above (because the cover plates are thin, the gap is controlled at 0.4cm), supporting the 29 cover plates above; the blocking cylinder 8 extends, and the L-shaped blocking plate 10 (silicone pad facing down) supports the bottom cover plate; after the pressure strip cylinder 13 retracts, the blocking cylinder 8 retracts at a constant speed, and the cover plate falls horizontally onto the PCB board of the SMT carrier (completely covering the component area).

[0097] Carrier release and specification switching: The pressure bar sensor 12 (reuse detection cover plate) confirms that the placement is complete, the positioning cylinder 7 retracts, the belt conveyor 1 resumes its speed of 0.8m / min, and transports the carrier to the finished product warehouse; if the cover plate specification needs to be changed, simply loosen the bolts of the bracket cross plate 4, adjust the spacing and then fix it again, without replacing other parts, and the switching time is ≤5 minutes.

Claims

1. A device for automatically releasing pressure strips and cover plates, characterized in that, include: Belt conveyor (1), used for conveying product carriers; The bracket is fixed above the belt conveyor (1); the inside of the bracket is provided with a storage cavity for placing pressure strips and cover plates; Two blocking units are configured and symmetrically arranged on both sides of the bracket; the blocking unit includes a gripper cylinder (5), a blocking cylinder (8) and a blocking plate (10); the gripper cylinder (5) is fixed on the bracket; the blocking cylinder (8) is located below the gripper cylinder (5); the piston rod of the gripper cylinder (5) is fixedly connected to the blocking cylinder (8); the piston rod of the blocking cylinder (8) is oriented towards the storage cavity; the blocking plate (10) is fixed on the piston rod of the blocking cylinder (8); the cross-sectional shape of the blocking plate (10) is L-shaped. There are two dispensing units, symmetrically arranged on both sides of the support; two blocking units and two dispensing units are alternately arranged on the side of the support; the dispensing unit includes a pressure bar cylinder (13) and a dispensing plate (2); the pressure bar cylinder (13) is fixed on the support; the piston rod of the pressure bar cylinder (13) is set towards the storage cavity; the dispensing plate (2) is fixed on the piston rod of the pressure bar cylinder (13); the cross-sectional shape of the dispensing plate (2) is cross-shaped.

2. The device for automatically releasing pressure bars and cover plates as described in claim 1, characterized in that, The upper end of the packaging plate (2) facing the storage cavity is integrally provided with a guide slope (14).

3. The device for automatically releasing pressure bars and cover plates as described in claim 1, characterized in that, The bracket includes a horizontal plate (4) and a vertical plate (3); four vertical plates (3) are configured; the four vertical plates (3) are arranged in parallel and spaced apart to form the four sides of the cuboid frame; multiple horizontal plates (4) are configured; the horizontal plates (4) are arranged between two adjacent vertical plates (3), and their two ends are fixedly connected to the two vertical plates (3) respectively.

4. The device for automatically releasing pressure bars and cover plates as described in claim 3, characterized in that, It also includes a vehicle positioning sensor (11); located on one side of the gripper cylinder (5) and fixed on the longitudinal plate (3).

5. The device for automatically releasing pressure bars and cover plates as described in claim 3, characterized in that, It also includes a pressure bar sensor (12); the pressure bar sensor (12) is located on one side of the pressure bar cylinder (13) and fixed on the horizontal plate (4).

6. The device for automatically releasing pressure bars and cover plates as described in claim 1, characterized in that, It also includes cover plate sensors (9); the cover plate sensors (9) are spaced apart on one side of the bracket and fixed on the belt conveyor (1).

7. The device for automatically releasing pressure bars and cover plates as described in claim 6, characterized in that, It also includes a positioning cylinder (7); the positioning cylinder (7) is spaced apart on one side of the bracket and fixed on the belt conveyor (1); the cover plate sensor (9) is located between the bracket and the positioning cylinder (7); the piston rod of the positioning cylinder (7) is set upward; a positioning plate (6) is fixedly set on the piston rod of the positioning cylinder (7).

Images