Automatic flap turning machine

Abstract

The application discloses an automatic plate turning machine, which comprises three track flow lines, namely an A track flow line, a B track flow line and a C track flow line, a turnover mechanism, a carrying module, an upper and lower feeding mechanism installed on the carrying module, a jacking mechanism and a blocking mechanism. The automatic plate turning machine has high turnover quality and excellent turnover efficiency, and can greatly reduce CT time.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automation equipment, in particular to a PCB automatic plate turning machine applied to an SMT production line. BACKGROUND

[0002] With the development of the electronic industry, in modern industrial production, electronic products have become small, specialized and diversified, and in the SMT industry, the operation mode of personnel plus jig assistance has been eliminated, and the use of a plate turning machine in PCB production has become a trend.

[0003] In the prior art, there are many SMT enterprises that develop plate turning machines for automatic plate turning. Traditionally, the plate turning machine has a turnover mechanism, a feeding and discharging mechanism, a carrying module, etc. However, in the existing plate turning machine, as the most important feeding and discharging mechanism, the PCB product is easily lifted by the upper carrier when separating the two carriers, which affects the turnover quality, and the plate turning action is strictly according to the time sequence, and when one carrier is working, the other carrier is in an idle state, which greatly affects the turnover efficiency.

[0004] For example, Chinese patent document CN217675271U discloses an automatic plate turning mechanism, which comprises a blocking mechanism, a jacking assembly for driving the carrier to move up and down, a turnover assembly for driving the carrier to turn over, and a conveying track for conveying the product carrier. The turnover assembly is arranged above the conveying track through the blocking mechanism, and the jacking assembly is arranged between the conveying tracks. In this way, the carrier can be turned over by 180° without changing the flow direction. However, the CT time is too long, and the turnover efficiency is low.

[0005] For example, Chinese patent document CN203753870U discloses a full-automatic assembly line mechanism. Two belt mounting blocks are supported and fixed by support blocks. A belt is mounted on the belt mounting block. A flow line driving device is located on the side of one of the belt mounting blocks. The flow line driving device is connected with the belt through a belt pulley and drives the belt to rotate. The product carrier is driven forward by the belt. A carrier sensing mechanism is fixed on a carrier sensing mechanism fixing seat, and the carrier sensing mechanism is located between the two belts. The front and rear sensing mechanism fixing seats are fixed on the inner sides of the belt mounting blocks, and the front and rear sensing mechanism are installed on the front and rear sensing mechanism fixing seats, respectively. The carrier baffle is fixedly connected between the two belt mounting blocks, and the carrier baffle is located at the end of the flow line. Four sets of blocking mechanisms and two sets of carrier jacking mechanisms are provided between the two belts. This scheme can automatically sense the stop of the product carrier, greatly improving the production efficiency. However, due to the complexity of the structure, the cost is also greatly increased.

[0006] However, there is an urgent need in the prior art for an automatic plate turning machine solution with high turnover quality and excellent turnover efficiency. SUMMARY

[0007] In view of the technical problems existing in the prior art, the present application aims to provide an automatic plate turnover machine with high turnover quality, excellent turnover efficiency and greatly reduced CT time.

[0008] Specifically, according to one aspect of the present application, an automatic plate turnover machine is provided, which comprises three rail flow lines, i.e., an A rail flow line 1, a B rail flow line 2, and a C rail flow line 3, a turnover mechanism 4, and a carrying module 5, an upper and lower feeding mechanism installed on the carrying module 5, a jacking positioning mechanism, and a blocking mechanism; and the machine is characterized in that:

[0009] The three rail flow lines are laid along the length direction of the machine base T of the automatic plate turnover machine, the A rail flow line 1 and the B rail flow line 2 are arranged side by side to run in turn when working in sequence, and are used for placing a carrier one, the C rail flow line is used for placing a carrier two, and the carrier one and the carrier two are used for placing products to be turned over; each rail flow line is respectively provided with an A rail code scanning gun 6, a B rail code scanning gun 7, and a C rail code scanning gun 8 at one end thereof to scan and confirm the code on the corresponding carrier.

[0010] The turnover mechanism 4 is used for turnover of the carrier one and the carrier two, and comprises a turnover support seat, a driving mounting seat, a turnover driving mechanism, and a carrier turnover clamping jaw mechanism.

[0011] The carrying module comprises a non-standard needle plate clamping jaw and a side pushing cylinder 13, the side pushing cylinder is used for arranging the carrier after turnover, and facilitates the non-standard needle plate clamping jaw to take away the upper carrier when the carrier one and the carrier two are stacked; the carrying module further comprises a Z-axis separation carrier module 51, which has a carrier clamping mechanism with a clamping jaw for clamping the carrier, and is used for carrying the carrier two from the C rail flow line to the A rail flow line or the B rail flow line, or carrying the carrier with products after turnover from the A rail flow line or the B rail flow line to the C rail flow line, and can also be adjusted in height (i.e., Z-axis) to adapt to the height of the jacking positioning mechanism.

[0012] The blocking mechanism is respectively arranged at the terminal of the flow direction of each rail flow line, and is used for blocking the flow direction of the rail flow line, wherein the blocking mechanism 9A is used for blocking the flow direction of the A rail flow line, the blocking mechanism 9B is used for blocking the flow direction of the B rail flow line, and the blocking mechanism 9C is used for blocking the flow direction of the C rail flow line.

[0013] The jacking positioning mechanism is arranged on the A rail flow line and the B rail flow line, and comprises an A rail jacking positioning mechanism 10A and a B rail jacking positioning mechanism 10B, and is used for jacking and positioning the carrier one on the respective rail flow line.

[0014] Further, the feeding and discharging mechanism comprises a taking mechanism, the carrying module drives the non-standard needle plate clamping jaw to take the carrier one to feed and discharge, so as to place the product such as the PBC plate in the carrier one, in a preferred embodiment, a downward pressing linear driving mechanism is further included to drive the downward pressing part to press the PCB plate downward, in a further preferred embodiment, the downward pressing linear driving mechanism comprises a pressing carrier cylinder 12.

[0015] Preferably, the automatic plate turning machine further comprises a sensing mechanism, which can be arranged on the carrier plate turning clamping jaw mechanism or the turning support seat, and is set according to the requirement, and is designed to be more sensitive when arranged on the carrier plate turning clamping jaw mechanism, and the defect is that it moves with the turning of the plate, and when arranged on the support seat, it can effectively reduce the load of the carrier plate turning clamping jaw mechanism and reduce the burden of the turning driving mechanism. In a further preferred embodiment, the sensing mechanism comprises a sensing baffle, which enters the sensing position to trigger the action when the carrier plate turning clamping jaw mechanism is in the taking position.

[0016] Preferably, a camera mechanism is further included, which is installed on the carrying module 5 and used to take a photo of the PCB plate after the turning and discharging, and then detect the state of the PCB plate through the visual detection system.

[0017] Preferably, a carrier clamping mechanism for clamping the carrier one is arranged on the carrier plate turning clamping jaw mechanism, so as to ensure that the carrier plate turning clamping jaw mechanism can clamp and lock the PCB plate when turning.

[0018] Further, the carrier clamping mechanism comprises a clamping driving mechanism fixed on the carrier plate turning clamping jaw mechanism and clamping plates located on both sides of the carrier plate turning clamping jaw mechanism, the clamping plates are driven by the clamping driving mechanism to clamp the carrier one.

[0019] Further, the turning driving mechanism further comprises a motor for driving the turning shaft to rotate.

[0020] Further, the plate turning machine further comprises a cabinet 13 for placing the plate turning machine on the counter of the cabinet, and the size is suitable for the plate turning machine to be installed in the cabinet.

[0021] Further, the cabinet of the plate turning machine is provided with an observation window 14 flush with the height of the rail streamline, so as to facilitate the observation of the running state of the plate turning machine.

[0022] According to the present application, when the product is turned, that is, when the PCB plate is turned from the carrier 1 to the carrier 2, the A rail and the B rail are operated simultaneously in the double streamline, so as to reduce the CT time (that is, the time interval from the operation of the last product to the operation of the next product).

[0023] According to the application, when the carrier with products (PCB board) enters the A rail and the B rail to the blocking position respectively, the carrier two enters the C rail to the blocking position, the code scanning gun scans the streamline carrier. The A rail lifting positioning mechanism lifts and positions the carrier one with PCB board, the carrier one with PCB board in the B rail streamline waits, (after the A rail action is completed, the carrier one with PCB board in the B rail is acted) the clamp jaw of the carrying module clamps and carries the carrier two from the C rail to the above of the A rail, and the turnover mechanism also moves to the above of the A rail, the carrying module Z axis descends to place the carrier two above the products (PCB board), the carrier one and the carrier two are combined together, the turnover mechanism clamps and tightens the carrier two and the carrier one with PCB board, the lifting positioning mechanism descends to the streamline below, the turnover mechanism clamps and turns over the carrier two and the carrier one with PCB board by 180°, at this time, the PCB board completes the turnover and moves from the carrier one to the carrier two, after the turnover is completed, the side clamping air cylinder 11A and 11B are used to clamp and arrange the carrier two and the carrier one with PCB board, the lifting positioning mechanism ascends to take the carrier two and the carrier one with PCB board, after completion, the carrying module moves to the above of the A rail, the carrier separation mechanism separates the carrier two and the carrier one with PCB board, the carrier one with clamp jaw takes away and places in the C rail streamline, the carrier two with PCB board is lowered by the lifting positioning mechanism and falls to the A rail streamline, at the same time, the C rail continues to enter the new carrier, then the turnover action of the B rail is completed, and the A rail and the B rail complete the turnover action process alternately. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 Fig. 1 is a perspective view showing the overall structure of an automatic board turnover machine according to an embodiment of the present application.

[0025] Figure 2 Fig. 2 is a top view showing the overall structure of an automatic board turnover machine according to an embodiment of the present application.

[0026] Figure 3 Fig. 3 is a front view showing the overall structure of an automatic board turnover machine according to an embodiment of the present application.

[0027] Figure 4 Fig. 4 is a side view showing the overall structure of an automatic board turnover machine according to an embodiment of the present application.

[0028] Figure 5 Fig. 5 is a perspective view showing the overall structure of a cabinet of an automatic board turnover machine according to an embodiment of the present application. DETAILED DESCRIPTION

[0029] The present application will be described in detail below with reference to the accompanying drawings in conjunction with specific embodiments. Those skilled in the art will understand that the description is exemplary, and the present application is not limited in the specific embodiments.

[0030] Figures 1-4This is a structural diagram illustrating the automatic flipping machine according to an embodiment of the present invention. Figure 5 This is a three-dimensional diagram showing its installation in a cabinet.

[0031] like Figures 1-4 As shown, the automatic flipping machine of the present invention includes a cabinet 13, an A-rail flow line 1, a B-rail flow line 2, and a C-rail flow line 3 mounted on the cabinet counter, a flipping mechanism 4, and a handling module 5, as well as a loading / unloading mechanism and a camera mechanism (not shown here as they are not the core invention point), a lifting and positioning mechanism, and a blocking mechanism mounted on the handling module 5; the three rail flow lines are laid along their length on the cabinet counter (base T) of the automatic flipping machine, and the rail flow lines are used to place carrier one and press carrier two; each rail flow line is equipped with an A-rail barcode scanner 6, a B-rail barcode scanner 7, and a C-rail barcode scanner 8 at one end to scan and confirm the codes on the corresponding carriers; the flipping mechanism 4 is used to flip the carriers. Mechanism 4 includes a flip support base, a drive mounting base, a flip drive mechanism, and a carrier flip plate gripper mechanism (not shown as these are known structures in the art); the carrier includes carrier one and carrier two; the flip drive mechanism 4 is fixedly mounted on the drive mounting base, and a flip shaft is provided on the flip drive mechanism 4. The flip drive mechanism drives the flip shaft to flip along the axis of the flip shaft, and the carrier flip plate gripper mechanism is fixed on the flip shaft; the blocking mechanisms 9A, 9B, and 9C are respectively used to block the movement of the carrier in the flow direction of each rail flow line; the lifting and positioning mechanism is set on rail flow line 1 (A rail) and rail flow line 2 (B rail), and includes rail lifting and positioning mechanism 10A (A rail) and rail lifting and positioning mechanism 10B (B rail), respectively, for lifting and positioning the carrier one.

[0032] In a preferred embodiment, the automatic flipping machine further includes a sensing mechanism (not shown). The sensing mechanism can be mounted on the flipping jaw mechanism of the carrier to be flipped, or it can be mounted on the flipping support base, depending on the need. When mounted on the flipping jaw mechanism, the sensing is more sensitive, but the drawback is that it moves with the flipping mechanism. When mounted on the support base, it can effectively reduce the load on the flipping jaw mechanism of the carrier to be flipped, reducing the burden on the flipping drive mechanism. In a further preferred embodiment, the sensing mechanism includes a sensing baffle. When the flipping jaw mechanism is in the material-taking position, the sensing baffle enters the sensing position to trigger an action.

[0033] In a further preferred embodiment, a camera mechanism is also included, mounted on the handling module, for photographing the PCB board after it has been flipped and unloaded, and then its status is detected by a vision inspection system. The vision inspection system can be a prior art vision inspection system, or it can be the vision inspection system described in another invention of the applicant.

[0034] In a further preferred technical solution, a carrier clamping mechanism is arranged on the carrier flap gripper mechanism for clamping the carrier, so as to ensure that the carrier flap gripper mechanism can clamp and lock the PCB when being flipped.

[0035] Further, the flipping driving mechanism further comprises a motor for driving the flipping shaft to rotate.

[0036] The cabinet of the flipping machine is used to place the flipping machine on the counter of the cabinet 14, and the size thereof is suitable for loading the entire flipping machine into the cabinet 14. Further, the cabinet of the flipping machine is arranged flush with the height of the rail flow line to provide an observation window 13 for observing the running state of the flipping machine.

[0037] According to the present application, when the product is flipped, that is, when the PCB is flipped from the carrier one to the carrier two, the A rail and the B rail operate simultaneously in the same way, so as to reduce the CT time (that is, the time interval from the operation of the previous product to the operation of the next product).

[0038] According to the present application, when the carrier one with the product (PCB) enters the A rail and the B rail to the blocking position respectively, and the carrier two enters the C rail to the blocking position, the code scanning gun scans the flow line carrier. The carrier one with the PCB is positioned by the A rail lifting positioning mechanism, and the carrier one with the PCB in the B rail flow line waits on the flow line. After the A rail operation is completed, the carrier one with the PCB in the B rail is operated. The gripper of the carrying module clamps and carries the carrier two from the C rail to the upper side of the A rail, and the flipping mechanism also moves to the upper side of the A rail. The Z axis of the carrying module is lowered to place the carrier two above the product (PCB), and the carrier one and the carrier two are combined together. The flipping mechanism clamps the carrier two with the PCB and the carrier one, and the lifting positioning mechanism of the carrier one is lowered below the flow line. The flipping mechanism clamps the carrier two with the PCB and the carrier one to flip by 180°. At this time, the PCB is flipped and moved from the carrier one to the carrier two. After the flipping is completed, the side clamping cylinder clamps and arranges the carrier two with the PCB. The lifting positioning mechanism is raised to take the carrier two with the PCB. After the operation is completed, the carrying module moves to the upper side of the A rail. The carrier separation mechanism separates the carrier two with the PCB from the carrier one. The carrier one with the PCB is taken away and placed in the C rail flow line. The carrier two with the PCB is lowered by the lifting positioning mechanism and flows out of the A rail flow line. At the same time, the C rail continues to enter a new carrier, and then the flipping operation of the B rail is completed. The A rail and the B rail complete the flipping operation process alternately.

[0039] The A-rail flow line 1 is laid on the cabinet counter along the length direction, and has a feeding position and a finished position for placing the feeding carrier one, which can move along the vertical direction of the A-rail flow line 1 under the driving of the screw motor, and the A-rail flow line 1 is used for accurately positioning the feeding carrier, and the taking mechanism places the finished PCB on the finished position. The A-rail lifting positioning mechanism 10A of the A-rail flow line 1 is used for lifting the feeding carrier one and realizing accurate positioning.

[0040] Similarly, the B-rail flow line 2 is laid on the cabinet counter along the length direction, and has a feeding position and a finished position for placing the feeding carrier one, which can move along the vertical direction of the B-rail flow line 2 under the driving of the screw motor, and the B-rail flow line 2 is used for accurately positioning the feeding carrier one, and the taking mechanism places the finished PCB on the finished position. The B-rail lifting positioning mechanism 10B of the B-rail flow line 2 is used for lifting the feeding carrier and realizing accurate positioning.

[0041] Here, the carrier on the A-rail flow line 1 and the carrier on the B-rail flow line 2 are both called the carrier one, because they are alternately operated and have the same working process, so as to greatly shorten the CT time.

[0042] The turnover mechanism 4 is used for overturning the feeding carrier one, and the turnover mechanism 4 includes a turnover support seat, a driving mounting seat, a turnover driving mechanism, and a carrier turnover plate clamping jaw mechanism (not shown because it is common knowledge in the art).

[0043] The carrying flow direction of the carrying module 5 is consistent with the length direction of the A-rail flow line and the B-rail flow line, and drives the taking mechanism to freely move in the XY plane and the Z-axis direction; the movement of each rail flow line includes a respective track and a linear driving mechanism, which can be a cylinder, a linear motor, a control motor and a screw, etc.

[0044] The camera mechanism is used for taking a picture of the product after the turnover and discharging, and detecting the state of the product through the vision system, and the camera mechanism is installed on the carrying module.

[0045] The turnover support seat is installed on the turnover carrier plate, and the turnover carrier plate is fixedly connected with the cabinet counter, and the blocking mechanism is fixedly installed on the turnover carrier plate.

[0046] The above describes the present application through the specific embodiments, however, the description is exemplary, and those skilled in the art can make various modifications and changes, as long as they do not deviate from the purpose and spirit of the present application, and these modifications and changes shall fall within the protection scope of the present application, and the protection scope of the present application is defined by the appended claims.

Claims

1. An automatic plate turning machine, comprising three track flow lines, namely an A-track flow line, a B-track flow line, a C-track flow line, a turnover mechanism, a carrying module, a jacking positioning mechanism, and a blocking mechanism; characterized in that: the three track flow lines are laid along the length direction of the machine base of the automatic plate turning machine, the A-track flow line and the B-track flow line are arranged side by side to run in turn when working alternately, and are used for placing a carrier one, the C-track flow line is used for placing a carrier two, and the carrier one and the carrier two are used for placing products to be turned over; each track flow line is respectively provided with an A-track code scanning gun, a B-track code scanning gun and a C-track code scanning gun at one end thereof to scan and confirm the code on the corresponding carrier; the turnover mechanism is used for turning over the carrier one and the carrier two; the carrying module is used for carrying the carrier two from the C-track flow line to the A-track flow line or the B-track flow line, or carrying the carrier with the products turned over from the A-track flow line or the B-track flow line to the C-track flow line, and can also be adjusted in height to adapt to the height of the jacking positioning mechanism; the blocking mechanism is respectively arranged at the end of the flow direction of each track flow line to block the flow direction of the track flow line, wherein the blocking mechanism (9A) is used for blocking the flow direction of the A-track flow line, the blocking mechanism (9B) is used for blocking the flow direction of the B-track flow line, and the blocking mechanism (9C) is used for blocking the flow direction of the C-track flow line; the jacking positioning mechanism is arranged on the A-track flow line and the B-track flow line, and respectively comprises an A-track jacking positioning mechanism and a B-track jacking positioning mechanism, and is used for jacking and positioning the carrier one on the respective track flow line; when the carrier one with the products enters the A-track and the B-track to the blocking position respectively, and the carrier two enters the C-track to the blocking position, the code scanning gun scans the code of the carriers on the flow lines, the A-track jacking positioning mechanism jacks and positions the carrier one with the PCB board, the carrier one with the PCB board in the B-track flow line waits on the flow line, the clamping jaw of the carrying module clamps and carries the carrier two from the C-track to above the A-track, the carrying module Z-axis is lowered to place the carrier two above the products, the carrier one and the carrier two are combined together, the turnover mechanism turns over the clamping jaw to clamp the carrier two and the carrier one with the products, the jacking positioning mechanism is lowered to below the flow line, the turnover mechanism clamps the carrier two and the carrier one with the products to turn over by 180°, the side clamping cylinder arranges the carrier two and the carrier one with the products after turning over, the jacking positioning mechanism is raised to take the carrier two and the carrier one with the products, the carrying module is moved to above the A-track after completion to separate the carrier two and the carrier one with the products, the clamping jaw of the carrying module takes away the carrier one to place on the C-track flow line, the carrier two with the products is lowered by the jacking positioning mechanism to flow out of the A-track flow line, and the C-track continues to enter a new carrier, and then the plate turning action on the B-track is completed, and the A-track and the B-track complete the plate turning action process alternately. It also comprises a feeding and discharging mechanism, and the feeding and discharging mechanism comprises a material taking mechanism.

2. The automatic turner as claimed in claim 1, wherein, The automatic plate turning machine further comprises a sensing mechanism, and the sensing mechanism comprises a sensing baffle.

3. The automatic turner of claim 1, wherein ​ 4. The automatic turner of claim 3, wherein The carrying module comprises a non-standard needle plate clamping jaw and a side pushing air cylinder used for arranging the turned over carrier, so as to facilitate the non-standard needle plate clamping jaw to take away the upper carrier when the carrier I and the carrier II are stacked.

5. The automatic turner of claim 1, wherein The A rail streamline, the B rail streamline and the C rail streamline each comprise a rail and a linear driving mechanism.

6. The automatic turner of claim 1, wherein A camera mechanism is further included, which is installed on the carrying module and used for taking a photo of the product after the turning and feeding, and then detecting the state of the product through a visual detection system.

7. The automatic turner of claim 1, wherein The turning mechanism comprises a turning support base, a driving mounting base, a turning driving mechanism and a carrier turning plate clamping jaw mechanism.

8. The automatic turner of claim 7, wherein The carrier clamping mechanism comprises a clamping driving mechanism fixed on the carrier turning plate clamping jaw mechanism.

9. The automatic turner of claim 8, wherein, The clamping driving mechanism is driven by an air cylinder.

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