Double-station LED display screen bulk chip mounter

Abstract

The invention relates to the field of chip mounters, in particular to a double-station LED display screen bulk chip mounter which comprises a material preparing unit and a discharging unit, and a material transferring unit is arranged between the material preparing unit and the discharging unit. The material preparing unit comprises two sliding rails, each sliding rail is provided with a material preparing plate moving in the length direction of the sliding rail, and a row of lamp beads to be transferred to the discharging unit through the material transferring unit are placed on each material preparing plate. The material transferring unit comprises a base, a transverse plate is connected to the base, the center of the transverse plate can do circular motion around the base, sliding grooves are symmetrically formed in a plate body of the transverse plate, and a sliding block in threaded connection through a lead screw is arranged in each sliding groove; the material preparing unit, the material transferring unit and the discharging unit are executed in order, multiple rows of lamp beads can be transferred in sequence and continuously, for lamp bead surface mounting operation, the efficiency of the whole surface mounting process can be improved, large-scale operation can be competent, and a guarantee is provided for follow-up lamp bead mounting on an LED display screen.

Description

Technical Field

[0001] The invention relates to the field of chip mounters, in particular to a double-station LED display screen bulk material chip mounter. Background Art

[0002] Lamp beads are one of the main materials that make up the LED display screen. Each LED display screen matrix is ​​installed with multiple lamp beads. In order to ensure the installation of the lamp beads, before installation, each lamp bead is first placed in a row by a robotic arm for preparation, and then the entire row is transferred to the material board through the patch equipment. The material board is provided with a glue layer for sticking the lamp beads, which can stabilize multiple rows of lamp beads on the material board, making it convenient for the subsequent installation of the lamp beads on the back panel of the LED display screen.

[0003] The current SMT equipment generally performs four steps of grabbing, transferring, lowering and resetting in the process of transferring rows of lamp beads. Grabbing is grabbing rows of lamp beads, transferring is transferring rows of lamp beads to the top of the material plate, lowering is lowering rows of lamp beads onto the material plate, and resetting is the return of the grabbing part of the SMT equipment to the preparation area. The above four steps are one cycle. During the transfer and lowering process, the preparation area already has prepared lamp beads, and the lamp beads are in a waiting state. For the entire lamp bead transfer process, there is still room for improvement, which can improve the efficiency of transfer SMT and can also be competent when there are multiple rows of lamp beads in the preparation area.

[0004] Therefore, in order to solve the above problems, a double-station LED display screen bulk material placement machine is proposed. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows: the present invention discloses a double-station LED display screen bulk material placement machine, comprising a material preparation unit and a material discharging unit, wherein a material transfer unit is arranged between the material preparation unit and the material discharging unit; the material preparation unit comprises two slide rails, each of which is provided with a material preparation plate moving along its length direction, and each of which is provided with a row of lamp beads to be transferred to the material discharging unit through the material transfer unit;

[0007] The material transfer unit includes a base, a horizontal plate is connected to the base, the center of the horizontal plate can make a circular motion around the base, and a slide groove is symmetrically provided on the plate body of the horizontal plate. A slider connected by a screw thread is provided in each slide groove, and a No. 1 plate is provided below each slider. A row of adsorption tubes is provided on the lower surface of each No. 1 plate, and the adsorption tubes are connected to an external negative pressure pump through a hose; the adsorption tubes can adsorb the lamp beads on the material preparation plate;

[0008] The discharging unit comprises a supporting plate, and the supporting plate can receive the lamp beads transferred by the transferring unit.

[0009] Preferably, a No. 2 plate is provided below each No. 1 plate, a row of adsorption tubes is fixedly connected to the lower surface of each No. 2 plate, and both ends of each No. 2 plate are fixedly connected to push rods, each push rod slides upward and penetrates the No. 1 plate, and each push rod end is connected to the upper surface of the No. 1 plate through a spring;

[0010] A pressing assembly is symmetrically arranged above the material preparation unit, each pressing assembly includes a No. 1 cylinder, each No. 1 cylinder is located above the end of the horizontal plate, and the No. 1 cylinders are arranged one by one corresponding to the material preparation plates;

[0011] The output end of each No. 1 cylinder is fixedly connected with a No. 3 plate, and pressure rods are arranged on the lower surfaces of both ends of the No. 3 plate, and the pressure rods can press down the push rod.

[0012] Preferably, the discharging unit also includes two longitudinal drive assemblies arranged side by side, and a transverse drive assembly arranged on the longitudinal drive assembly, a pallet is installed on the transverse drive assembly, and the longitudinal drive assembly cooperates with the transverse drive assembly to realize transverse and longitudinal movement of the pallet.

[0013] Preferably, an air intake unit is arranged above the support plate, the air intake unit is used to cooperate with the adsorption tube, and the air intake unit includes a downward pressure component arranged above the support plate, and a plug is fixedly connected to one side below the third plate in the downward pressure component of the air intake unit, and the plug is connected to an external air pump;

[0014] The air intake unit also includes an air valve fixedly connected to each No. 2 plate; the air valve includes a valve body, the valve body penetrates the No. 1 plate upward, and an air hole is provided in the center of the valve body and penetrates upward and downward, the upper end of the air hole is opposite to the insertion tube, and the lower end of the air hole is connected to the adsorption tube arranged on the lower surface of the No. 2 plate;

[0015] The diameter of the lower half of the air hole is larger than the diameter of the upper half, and a reduced diameter transition zone is arranged in the middle of the air hole. A truncated cone-shaped blocking block is arranged at the reduced diameter zone, and the blocking block is connected to the second plate through a compression spring.

[0016] Preferably, each of the material preparation plates is hollow inside, and multiple negative pressure holes are arranged side by side on the upper surface of each material preparation plate. A rectangular body is provided on one side of each material preparation plate, and longitudinal and transverse staggered airways are provided on the rectangular body. The longitudinal airway connects the inside of the material preparation plate with the external airway, and a sliding pin connected to a compression spring is provided in the transverse airway. A radial through hole is provided in the middle of the sliding pin, and the through hole is connected to the longitudinal airway;

[0017] An insertion rod is provided at one end of each slide rail, the end of the insertion rod is opposite to the end of the sliding pin, and the insertion rod can be inserted into the transverse airway and pressed against the sliding pin.

[0018] Preferably, each of the adsorption tubes includes an upper tube body and a lower tube body, the upper tube body and the lower tube body are connected through a bellows, and a return spring is provided on the outer ring of the bellows, and both ends of the return spring are respectively fixed to the upper tube body and the lower tube body.

[0019] Preferably, an arc-shaped notch is provided at the lower end of the lower tube body, and the inner surface shape of the notch is adapted to the spherical shape of the lamp bead.

[0020] Preferably, a silicone protective layer is adhered to the inner surface of the recess.

[0021] Preferably, an annular body is provided above the base, the annular body is attached to the lower surface of the horizontal plate, and the annular body is fixed to the base through a plurality of support rods.

[0022] Preferably, a rotation groove is provided on the lower surface of the transverse plate, and the inner surface of the rotation groove is adapted to the outer surface of the annular body.

[0023] The present invention is beneficial in that:

[0024] 1. The material preparation unit, material transfer unit and material discharging unit provided in this embodiment are executed in an orderly manner, and multiple rows of lamp beads can be transferred sequentially and uninterruptedly. For the lamp bead patch operation, it helps to improve the efficiency of the entire patch process, and is capable of large-scale operations, providing a guarantee for the subsequent installation of lamp beads on the LED display screen.

[0025] 2. The adsorption tube is divided into an upper tube body and a lower tube body at both ends, and the upper tube body and the lower tube body are flexibly connected, that is, connected by a bellows in the form of a return spring, so that after the lower end of the adsorption tube is pressed down on the lamp bead, it can give way to the buffer straw to squeeze the lamp bead, so as to prevent the adsorption tube from squeezing and damaging the lamp bead. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a first-perspective stereoscopic image of the double-station LED display screen bulk material placement machine in the present invention;

[0027] Figure 2 This is a second perspective stereogram of the double-station LED display screen bulk material placement machine of the present invention;

[0028] Figure 3 It is a top view of the double-station LED display screen bulk material placement machine in the present invention;

[0029] Figure 4 It is a side view of the double-station LED display screen bulk material placement machine in the present invention;

[0030] Figure 5 It is a three-dimensional diagram of the material transfer unit of the present invention;

[0031] Figure 6 is a three-dimensional diagram of the pressing assembly in the present invention;

[0032] Figure 7 It is a three-dimensional diagram of the material preparation unit in the present invention;

[0033] Figure 8It is a schematic diagram of the cooperation between the rectangular body and the insertion rod in the present invention;

[0034] Fig. 9 is a cross-sectional view of a rectangular body in the present invention;

[0035] Fig.10 is a three-dimensional diagram of the air intake unit in the present invention;

[0036] Fig.11 It is a front view of the air intake unit in the present invention;

[0037] Fig.12 It is a schematic diagram of the cooperation between the valve body and the cannula in the present invention;

[0038] Fig.13 It is a three-dimensional diagram of the adsorption tube in the present invention.

[0039] In the figure: 101, lamp bead; 1, slide rail; 2, material preparation plate; 3, base; 4, horizontal plate; 5, slide groove; 6, screw rod; 7, slider; 8, plate No. 1; 9, adsorption tube; 10, support plate; 11, plate No. 2; 12, push rod; 13, cylinder No. 1; 14, plate No. 3; 15, pressure rod; 16, longitudinal drive assembly; 17, transverse drive assembly; 18, insert tube; 19, valve body; 20, airway; 21, blocking block; 22, negative pressure hole; 23, rectangular body; 24, air hole; 25, sliding pin; 26, through hole; 27, insert rod; 28, upper tube body; 29, lower tube body; 30, bellows; 31, reset spring; 32, notch; 33, annular body; 34, rotating groove. DETAILED DESCRIPTION

[0040] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0041] Reference Figure 1 - Figure 7 A double-station LED display screen bulk material placement machine includes a material preparation unit and a material discharging unit, and a material transfer unit is arranged between the material preparation unit and the material discharging unit; the material preparation unit includes two slide rails 1, each of which is provided with a material preparation plate 2 moving along its length direction, and each of the material preparation plates 2 is provided with a row of lamp beads 101 to be transferred to the material discharging unit through the material transfer unit;

[0042] The material transfer unit includes a base 3, a horizontal plate 4 is connected to the base 3, the center of the horizontal plate 4 can make a circular motion around the base 3, and a slide groove 5 is symmetrically provided on the plate body of the horizontal plate 4. A slider 7 is provided in each slide groove 5 and is threadedly connected by a screw rod 6. A No. 1 plate 8 is provided below each slider 7. A row of adsorption tubes 9 are provided on the lower surface of each No. 1 plate 8. The adsorption tubes 9 are connected to an external negative pressure pump through a hose; the adsorption tubes 9 can adsorb the lamp beads 101 on the material preparation plate 2;

[0043] The discharging unit includes a support plate 10, and the support plate 10 can receive the lamp beads 101 transferred by the transfer unit;

[0044] In this embodiment, a servo motor can be used as a power source to drive the horizontal plate 4 to rotate. The housing of the servo motor is fixedly connected to the base 3, and the output end of the servo motor is fixedly connected to the center of the horizontal plate 4. The servo motor can drive the horizontal plate 4 to rotate clockwise and counterclockwise. In this embodiment, two preparation plates 2 are provided, and each preparation plate 2 is provided with lamp beads 101 neatly arranged by a mechanical arm, that is, the rows of lamp beads 101 on the preparation plate 2 are in a preparation state;

[0045] When the robot arm places each lamp bead 101 on the preparation plate 2 one by one, the preparation plate 2 slides a specified length on the slide rail 1 to which it is connected, so that each lamp bead 101 can be neatly arranged at the same distance, and the power source for driving the preparation plate 2 to move can use an electric push rod, which drives the preparation plate 2 to move. When the lamp beads 101 on the preparation plate 2 are fully loaded, the material transfer unit can perform the material transfer operation, and the screw rod 6 is driven by the motor, and the screw rod 6 pushes the No. 1 plate 8 to move to one of the preparation plates 2 fully loaded with rows of lamp beads 101 through the slider 7. The adsorption tube 9 corresponds to the lamp bead 101 one by one. Then, under the negative pressure of the external negative pressure pump, the adsorption port of the adsorption tube 9 adsorbs each lamp bead 101. At this time, the preparation plate 2 then drives the horizontal plate 4 to rotate 180 degrees clockwise through the servo motor, and one end of the horizontal plate 4 rotates from the preparation unit position to the discharge unit position, and at the same time, the other end of the horizontal plate 4 rotates from the discharge unit position to the preparation unit position;

[0046] The adsorption tube 9 at one end of the horizontal plate 4 transfers the lamp bead 101 to the discharging unit position, driving the external negative pressure pump to stop. At this time, the lamp bead 101 adsorbed by the lower end of the adsorption tube 9 loses the negative pressure and falls onto the support plate 10 under its own gravity. The adhesive layer on the surface of the support plate 10 firmly bonds the lamp bead 101.

[0047] At the same time, the adsorption tube 9 at the other end of the horizontal plate 4 is moved to the top of another preparation board 2 on which the lamp beads 101 are prepared under the transmission adjustment of the screw rod 6. Then, with the cooperation of the external negative pressure pump, the adsorption tube 9 adsorbs the lamp beads 101 on the surface of another preparation board 2, and the lamp beads 101 are being placed one by one on one of the previous preparation boards 2 by the mechanical arm, so as to prepare for the adsorption tube 9 at one end of the horizontal plate 4 to rotate, reset and adsorb again, and so on, repeat the above steps;

[0048] The material preparation unit, material transfer unit and material discharging unit provided in this embodiment are executed in an orderly manner, and multiple rows of lamp beads 101 can be transferred sequentially and uninterruptedly. For the lamp bead 101 patch operation, it helps to improve the efficiency of the entire patch process, and is capable of large-scale operations, providing a guarantee for the subsequent installation of the lamp beads 101 on the LED display screen.

[0049] Reference Figure 1 - Figure 6 A No. 2 plate 11 is provided below each No. 1 plate 8, a row of adsorption tubes 9 is fixedly connected to the lower surface of each No. 2 plate 11, and a push rod 12 is fixedly connected to both ends of each No. 2 plate 11, each push rod 12 slides upward and penetrates the No. 1 plate 8, and the end of each push rod 12 is connected to the upper surface of the No. 1 plate 8 through a spring;

[0050] A pressing assembly is symmetrically arranged above the material preparation unit, each pressing assembly includes a No. 1 cylinder 13, each No. 1 cylinder 13 is located above the end of the horizontal plate 4, and the No. 1 cylinder 13 is arranged one by one with the material preparation plate 2;

[0051] The output end of each No. 1 cylinder 13 is fixedly connected to a No. 3 plate 14. The lower surfaces of both ends of the No. 3 plate 14 are provided with pressure rods 15, and the pressure rods 15 can press down the push rod 12;

[0052] The rows of adsorption tubes 9 are transferred to the positions of the rows of lamp beads 101. In order to prevent the adsorption tubes 9 from interfering with the lamp beads 101 when rotating, a certain distance is kept between the lower end of the adsorption tubes 9 and the lamp beads 101. At this time, when the external adsorption tubes 9 adsorb the lamp beads 101, the lamp beads 101 can be adsorbed and lifted up by the adsorption force and adsorbed on the lower end of the adsorption tubes 9 while keeping a certain distance. This method of adsorbing and grabbing the lamp beads 101 may result in unstable adsorption, that is, the adsorption tubes 9 fail to successfully adsorb and grab all the lamp beads 101 in a row, which will affect the installation of the lamp beads 101 on the back panel of the LED display screen, and there will be a lack of lamp beads at some points. 101, a pressing component is provided for this purpose, and the pressing component can directly attach the adsorption tube 9 to the surface of the lamp bead 101, and then adsorb it; the specific operation is that the adsorption tube 9 is transferred to the top of the lamp bead 101, and then the No. 1 cylinder 13 opposite to the adsorption tube 9 performs the action of pressing the pressure rod 15, the pressure rod 15 presses down the push rod 12, and the push rod 12 pushes down the No. 2 plate 11, and the No. 2 plate 11 drives the rows of adsorption tubes 9 to attach to the lamp beads 101 on the preparation plate 2 one by one, and then under the action of the external negative pressure pump, each adsorption tube 9 adsorbs the corresponding lamp beads 101, ensuring that each lamp bead 101 in the row can be adsorbed by the adsorption tube 9.

[0053] Reference Figure 1 - Figure 3, the discharging unit also includes two longitudinal drive assemblies 16 arranged side by side, and a transverse drive assembly 17 arranged on the longitudinal drive assembly 16, a pallet 10 is installed on the transverse drive assembly 17, and the longitudinal drive assembly 16 cooperates with the transverse drive assembly 17 to realize the transverse movement and longitudinal movement of the pallet 10; in this embodiment, the transverse drive assembly 17 and the longitudinal drive assembly 16 can both include tracks, and a transverse track is slidably connected to the two longitudinal tracks arranged side by side, and the pallet 10 is slidably connected to the transverse track, and the longitudinal drive assembly 16 cooperates with the transverse drive assembly 17 to realize the transverse movement and longitudinal movement of the pallet 10. When the transverse plate 4 cooperates with the adsorption tube 9 to transfer the lamp bead 101 to the top of the pallet 10, the pallet 10 is moved and the position of the pallet 10 is adjusted so that the blank area on the pallet 10 is opposite to the lamp bead 101, instead of driving the adsorption tube 9 to move by the screw rod 6 transmission slider 7, moving the adsorption tube 9 will cause the lamp bead 101 to swing, which may cause the lamp bead 101 to fall accidentally.

[0054] Reference Figure 1 - Figure 4 ,as well as Fig.10 - Fig.12 An air intake unit is arranged above the support plate 10, and the air intake unit is used to cooperate with the adsorption tube 9, and the air intake unit includes a downward pressure component arranged above the support plate 10, and a plug 18 is fixedly connected to one side below the third plate 14 in the downward pressure component of the air intake unit, and the plug 18 is connected to an external air pump;

[0055] The air intake unit further includes an air valve fixedly connected to each No. 2 plate 11; the air valve includes a valve body 19, the valve body 19 passes through the No. 1 plate 8 upward, and an air hole 24 is provided in the center of the valve body 19 and passes through the valve body 19 from top to bottom. The upper end of the air hole 24 is opposite to the insert pipe 18, and the lower end of the air hole 24 is connected to the adsorption tube 9 provided on the lower surface of the No. 2 plate 11;

[0056] The diameter of the lower half of the air hole 24 is larger than the diameter of the upper half, and a diameter reduction zone transition is provided in the middle of the air hole 24. A truncated cone-shaped blocking block 21 is provided at the position of the diameter reduction zone, and the blocking block 21 is connected to the second plate 11 through a compression spring;

[0057] When the lamp bead 101 is transferred to the top of the support plate 10, there is a certain distance between the lower surface of the lamp bead 101 and the upper surface of the support plate 10. When the adsorption tube 9 releases the lamp bead 101, this distance may cause the lamp bead 101 to scatter on the support plate 10, and it is difficult to arrange the lamp bead 101 neatly on the support plate 10. For this purpose, an air intake unit is provided. When the lamp bead 101 is transferred to the top of the support plate 10, the No. 3 plate 14 in the air intake unit moves downward under the driving action of the No. 1 cylinder 13 to which it is connected. The pressure rods 15 at both ends of the No. 3 plate 14 in the air intake unit press down the push rod 12, and the push rod 12 pushes down the No. 2 plate 11. The No. 2 plate 11 drives the adsorption tube 9 to press the lamp bead 101 onto the support plate 10. At the same time, the insert tube 18 is inserted into the valve body 19, and the lower end of the insert tube 18 presses down the blocking block 21, and the blocking block 21 moves downward. At this time, the external air pump The gas is injected into the insert tube 18 and into each adsorption tube 9, so that the air pressure of the adsorption tube 9 is equal to the external air pressure in a short time, and the lamp bead 101 is bonded when it contacts the adhesive layer on the support plate 10; after the lamp bead 101 is arranged on the support plate 10, the third plate 14 of the air intake unit moves up, the pressure rod 15 no longer presses down the push rod 12, the lower end of the adsorption tube 9 is separated from the lamp bead 101, the insert tube 18 is separated from the valve body 19, and the blocking block 21 moves up and resets under the elastic force of the compression spring connected thereto to block the air hole 24 of the valve body 19 again; the setting of the air intake unit allows each lamp bead 101 to be attached to the adhesive layer on the support plate 10 and then separated from the adsorption tube 9, and when each adsorption tube 9 releases the lamp bead 101, the air pressure in the adsorption tube 9 tends to be equal to the external air pressure, which is convenient for the neat arrangement of the lamp bead 101.

[0058] Reference Figure 1 - Fig. 9 Each of the material preparation plates 2 is hollow inside, and multiple negative pressure holes 22 are arranged side by side on the upper surface of each material preparation plate 2. A rectangular body 23 is provided on one side of each material preparation plate 2, and longitudinal and transverse staggered airways 20 are provided on the rectangular body 23. The longitudinal airway 20 connects the inside of the material preparation plate 2 with the external air pipe, and a sliding pin 25 connected with a compression spring is provided in the transverse airway 20. A radial through hole 26 is provided in the middle of the sliding pin 25, and the through hole 26 is connected to the longitudinal airway 20;

[0059] One end of each of the slide rails 1 is provided with an insertion rod 27, the end of the insertion rod 27 is opposite to the end of the sliding pin 25, and the insertion rod 27 can be inserted into the horizontal airway 20 and pressed against the sliding pin 25; the robotic arm places the lamp beads 101 on the preparation plate 2 one by one, and then the preparation plate 2 moves intermittently along the slide rail 1, so that each lamp bead 101 placed on the preparation plate 2 is arranged at the same distance, and at the moment of intermittent movement of the preparation plate 2, due to the inertia of the lamp bead 101 itself, the lamp bead 101 may be offset on the preparation plate 2, affecting subsequent operations, for this reason, a plurality of negative pressure holes 22 are opened on the preparation plate 2, and the negative pressure holes 22 are connected to the external negative pressure pump, and the negative pressure holes 22 can stably adsorb each lamp bead 101 to ensure the stability of the lamp bead 101 after placement;

[0060] After placing the fully loaded lamp beads 101 on the preparation plate 2, the preparation plate 2 has moved to one end of the slide rail 1, which is the position where the adsorption tube 9 adsorbs the lamp beads 101. At the same time, the end of the insertion rod 27 is inserted in the horizontal airway 20 and pushes the sliding pin 25 to move. At this time, the through hole 26 on the sliding pin 25 is staggered with the longitudinal airway 20, and the sliding pin 25 blocks the longitudinal airway 20. There is no continuous negative pressure inside the preparation plate 2, so that the negative pressure hole 22 no longer adsorbs the lamp beads 101, which helps the adsorption tube 9 to effectively adsorb each lamp bead 101, so that the lamp bead 101 can successfully detach from the preparation plate 2.

[0061] Reference Fig.13 Each of the adsorption tubes 9 includes an upper tube body 28 and a lower tube body 29, the upper tube body 28 and the lower tube body 29 are connected by a bellows 30, and a return spring 31 is provided on the outer ring of the bellows 30, and the two ends of the return spring 31 are respectively fixed to the upper tube body 28 and the lower tube body 29; the adsorption tube 9 is divided into an upper tube body 28 and a lower tube body 29 at both ends, and the upper tube body 28 and the lower tube body 29 are flexibly connected, that is, connected by the bellows 30 in combination with the return spring 31, so that after the lower end of the adsorption tube 9 is pressed down on the lamp bead 101, it can give way to the buffer straw to squeeze the lamp bead 101, so as to prevent the adsorption tube 9 from squeezing and damaging the lamp bead 101.

[0062] Reference Fig.13 The lower end of the lower tube body 29 is provided with an arc-shaped recess 32, and the inner surface shape of the recess 32 is adapted to the spherical shape of the lamp bead 101; the arc-shaped recess 32 is provided at the lower end of the lower tube body 29, so that when the lamp bead 101 is adsorbed, the spherical surface of the lamp bead 101 can be stably attached to the position of the recess 32, thereby improving the sealing between the lamp bead 101 and the adsorption tube 9, reducing the possibility of external gas flowing into from the lower end of the adsorption tube 9, thereby improving the adsorption stability of the adsorption tube 9 on the lamp bead 101.

[0063] Reference Fig.13The inner surface of the recess 32 is pasted with a silicone protective layer; the silicone protective layer can reduce the extrusion and wear of the adsorption tube 9 on the lamp bead 101, ensure the smoothness and tidiness of the ball surface of the lamp bead 101, and further improve the sealing between the lamp bead 101 and the adsorption tube 9.

[0064] Reference Figure 1 - Figure 5 A ring body 33 is provided above the base 3, the ring body 33 is attached to the lower surface of the horizontal plate 4, and the ring body 33 is fixed to the base 3 through a plurality of support rods; the ring body 33 is provided to support the horizontal plate 4, improve the stability of the transferred lamp beads 101 of the horizontal plate 4, and reduce the possibility of the lamp beads 101 accidentally detaching from the adsorption tube 9.

[0065] Reference Figure 1 - Figure 5 The lower surface of the transverse plate 4 is provided with a rotation groove 34, and the inner surface of the rotation groove 34 is adapted to the outer surface of the annular body 33; the rotation groove 34 cooperates with the annular body 33, and the annular body 33 is rotatably connected in the rotation groove 34, which can further support and restrain the transverse plate 4, and help to improve the stability of the transverse plate 4.

[0066] Working principle: In this embodiment, a servo motor can be used as a power source to drive the horizontal plate 4 to rotate. The housing of the servo motor is fixedly connected to the base 3, and the output end of the servo motor is fixedly connected to the center of the horizontal plate 4. The servo motor can drive the horizontal plate 4 to rotate clockwise and counterclockwise. In this embodiment, two preparation plates 2 are provided, and each preparation plate 2 is provided with lamp beads 101 neatly arranged by a mechanical arm, that is, the rows of lamp beads 101 on the preparation plate 2 are in a preparation state;

[0067] When the robot arm places each lamp bead 101 on the preparation plate 2 one by one, the preparation plate 2 slides a specified length on the slide rail 1 to which it is connected, so that each lamp bead 101 can be neatly arranged at the same distance, and the power source for driving the preparation plate 2 to move can use an electric push rod, which drives the preparation plate 2 to move. When the lamp beads 101 on the preparation plate 2 are fully loaded, the material transfer unit can perform the material transfer operation, and the screw rod 6 is driven by the motor, and the screw rod 6 pushes the No. 1 plate 8 to move to one of the preparation plates 2 fully loaded with rows of lamp beads 101 through the slider 7. The adsorption tube 9 corresponds to the lamp bead 101 one by one. Then, under the negative pressure of the external negative pressure pump, the adsorption port of the adsorption tube 9 adsorbs each lamp bead 101. At this time, the preparation plate 2 then drives the horizontal plate 4 to rotate 180 degrees clockwise through the servo motor, and one end of the horizontal plate 4 rotates from the preparation unit position to the discharge unit position, and at the same time, the other end of the horizontal plate 4 rotates from the discharge unit position to the preparation unit position;

[0068] The adsorption tube 9 at one end of the horizontal plate 4 transfers the lamp bead 101 to the discharging unit position, driving the external negative pressure pump to stop. At this time, the lamp bead 101 adsorbed by the lower end of the adsorption tube 9 loses the negative pressure and falls onto the support plate 10 under its own gravity. The adhesive layer on the surface of the support plate 10 firmly bonds the lamp bead 101.

[0069] At the same time, the adsorption tube 9 at the other end of the horizontal plate 4 is moved to the top of another preparation board 2 on which the lamp beads 101 are prepared under the transmission adjustment of the screw rod 6. Then, with the cooperation of the external negative pressure pump, the adsorption tube 9 adsorbs the lamp beads 101 on the surface of another preparation board 2, and the lamp beads 101 are being placed one by one on one of the previous preparation boards 2 by the mechanical arm, so as to prepare for the adsorption tube 9 at one end of the horizontal plate 4 to rotate, reset and adsorb again, and so on, repeat the above steps;

[0070] The material preparation unit, material transfer unit and material discharging unit provided in this embodiment are executed in an orderly manner, so that multiple rows of lamp beads 101 can be transferred sequentially and uninterruptedly, which is helpful to improve the efficiency of the entire mounting process for the lamp beads 101 mounting operation, and is capable of large-scale operations, providing a guarantee for the subsequent installation of the lamp beads 101 on the LED display screen;

[0071] The rows of adsorption tubes 9 are transferred to the positions of the rows of lamp beads 101. In order to prevent the adsorption tubes 9 from interfering with the lamp beads 101 when rotating, a certain distance is kept between the lower end of the adsorption tubes 9 and the lamp beads 101. At this time, when the external adsorption tubes 9 adsorb the lamp beads 101, the lamp beads 101 can be adsorbed and lifted up by the adsorption force and adsorbed on the lower end of the adsorption tubes 9 while keeping a certain distance. This method of adsorbing and grabbing the lamp beads 101 may result in unstable adsorption, that is, the adsorption tubes 9 fail to successfully adsorb and grab all the lamp beads 101 in a row, which will affect the installation of the lamp beads 101 on the back panel of the LED display screen, and there will be a lack of lamp beads at some points. 101, a pressing component is provided for this purpose, and the pressing component can directly attach the adsorption tube 9 to the surface of the lamp bead 101, and then adsorb it; the specific operation is that the adsorption tube 9 is transferred to the top of the lamp bead 101, and then the No. 1 cylinder 13 opposite to the adsorption tube 9 performs the action of pressing the pressure rod 15, the pressure rod 15 presses down the push rod 12, and the push rod 12 pushes down the No. 2 plate 11, and the No. 2 plate 11 drives the rows of adsorption tubes 9 to attach to the lamp beads 101 on the preparation plate 2 one by one, and then under the action of the external negative pressure pump, each adsorption tube 9 adsorbs the corresponding lamp beads 101 one by one, ensuring that each lamp bead 101 in the row can be adsorbed by the adsorption tube 9;

[0072] In this embodiment, the transverse drive assembly 17 and the longitudinal drive assembly 16 can both include tracks, two tracks arranged side by side in the longitudinal direction are slidably connected to a transverse track, and the transverse track is slidably connected to the support plate 10. The longitudinal drive assembly 16 cooperates with the transverse drive assembly 17 to realize the transverse movement and longitudinal movement of the support plate 10. When the transverse plate 4 cooperates with the adsorption tube 9 to transfer the lamp bead 101 to the top of the support plate 10, the support plate 10 is moved and the position of the support plate 10 is adjusted so that the blank area on the support plate 10 is opposite to the lamp bead 101, instead of driving the adsorption tube 9 to move through the screw rod 6 transmission slider 7. Moving the adsorption tube 9 will cause the lamp bead 101 to swing, which may cause the lamp bead 101 to fall accidentally.

[0073] When the lamp bead 101 is transferred to the top of the support plate 10, there is a certain distance between the lower surface of the lamp bead 101 and the upper surface of the support plate 10. When the adsorption tube 9 releases the lamp bead 101, this distance may cause the lamp bead 101 to scatter on the support plate 10, and it is difficult to arrange the lamp bead 101 neatly on the support plate 10. For this purpose, an air intake unit is provided. When the lamp bead 101 is transferred to the top of the support plate 10, the No. 3 plate 14 in the air intake unit moves downward under the driving action of the No. 1 cylinder 13 to which it is connected. The pressure rods 15 at both ends of the No. 3 plate 14 in the air intake unit press down the push rod 12, and the push rod 12 pushes down the No. 2 plate 11. The No. 2 plate 11 drives the adsorption tube 9 to press the lamp bead 101 onto the support plate 10. At the same time, the insert tube 18 is inserted into the valve body 19, and the lower end of the insert tube 18 presses down the blocking block 21, and the blocking block 21 moves downward. At this time, the external air pump The gas is injected into the insert tube 18 and each adsorption tube 9, so that the air pressure of the adsorption tube 9 is equal to the external air pressure in a short time, and the lamp bead 101 is bonded to the adhesive layer on the support plate 10 when in contact with the lamp bead 10; after the lamp bead 101 is arranged on the support plate 10, the third plate 14 of the air intake unit moves up, the pressure rod 15 no longer presses down the push rod 12, the lower end of the adsorption tube 9 is separated from the lamp bead 101, the insert tube 18 is separated from the valve body 19, and the blocking block 21 moves up and resets under the elastic force of the compression spring connected thereto to block the air hole 24 of the valve body 19 again; the setting of the air intake unit makes each lamp bead 101 attached to the adhesive layer on the support plate 10 and then separated from the adsorption tube 9, and when each adsorption tube 9 releases the lamp bead 101, the air pressure in the adsorption tube 9 tends to be equal to the external air pressure, which is convenient for the neat arrangement of the lamp bead 101;

[0074] The robot arm places the lamp beads 101 on the preparation board 2 one by one, and then the preparation board 2 moves intermittently along the slide rail 1, so that each lamp bead 101 placed on the preparation board 2 is arranged at the same distance. At the moment when the preparation board 2 moves intermittently, due to the inertia of the lamp bead 101 itself, the lamp bead 101 may be offset on the preparation board 2, affecting subsequent operations. For this reason, a plurality of negative pressure holes 22 are opened on the preparation board 2, and the negative pressure holes 22 are connected to the external negative pressure pump. The negative pressure holes 22 can stably adsorb each lamp bead 101 to ensure the stability of the lamp bead 101 after placement;

[0075] After placing the full load of lamp beads 101 on the stock preparation plate 2, the stock preparation plate 2 has moved to one end of the slide rail 1, which is the position where the adsorption tube 9 adsorbs the lamp beads 101. At the same time, the end of the insertion rod 27 is inserted into the horizontal airway 20 and pushes the sliding pin 25 to move. At this time, the through hole 26 on the sliding pin 25 is staggered with the longitudinal airway 20, and the sliding pin 25 blocks the longitudinal airway 20. There is no continuous negative pressure inside the stock preparation plate 2, so that the negative pressure hole 22 no longer adsorbs the lamp beads 101, which helps the adsorption tube 9 to effectively adsorb each lamp bead 101, so that the lamp bead 101 is successfully separated from the stock preparation plate 2;

[0076] The adsorption tube 9 is divided into an upper tube body 28 and a lower tube body 29 at both ends, and the upper tube body 28 and the lower tube body 29 are flexibly connected, that is, connected by a bellows 30 in combination with a return spring 31, so that after the lower end of the adsorption tube 9 is pressed down on the lamp bead 101, the adsorption tube 9 can give way to the buffering straw to squeeze the lamp bead 101, so as to prevent the adsorption tube 9 from squeezing and damaging the lamp bead 101;

[0077] An arc-shaped notch 32 is provided at the lower end of the lower tube body 29, so that when the lamp bead 101 is adsorbed, the spherical surface of the lamp bead 101 can be stably attached to the notch 32, thereby improving the sealing between the lamp bead 101 and the adsorption tube 9, reducing the possibility of external gas flowing into from the lower end of the adsorption tube 9, thereby improving the adsorption stability of the adsorption tube 9 on the lamp bead 101;

[0078] The provided silicone protective layer can reduce the extrusion and wear of the adsorption tube 9 on the lamp bead 101, ensure the smoothness and cleanliness of the ball surface of the lamp bead 101, and also further improve the sealing between the lamp bead 101 and the adsorption tube 9.

[0079] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A double-station LED display bulk material placement machine, characterized by: It comprises a material preparation unit and a material discharging unit, wherein a material transfer unit is arranged between the material preparation unit and the material discharging unit; the material preparation unit comprises two slide rails (1), each slide rail (1) is provided with a material preparation plate (2) movable along its length direction, and each material preparation plate (2) is provided with a row of lamp beads (101) to be transferred to the material discharging unit through the material transfer unit; The material transfer unit comprises a base (3), a horizontal plate (4) is connected to the base (3), the center of the horizontal plate (4) can make a circular motion around the base (3), and a slide groove (5) is symmetrically provided on the plate body of the horizontal plate (4), each slide groove (5) is provided with a slider (7) threadedly connected through a screw rod (6), a No. 1 plate (8) is provided below each slider (7), and a row of adsorption tubes (9) are provided on the lower surface of each No. 1 plate (8), and the adsorption tubes (9) are connected to an external negative pressure pump through a hose; the adsorption tubes (9) can adsorb the lamp beads (101) on the material preparation plate (2); The discharging unit comprises a support plate (10), and the support plate (10) is capable of receiving the lamp beads (101) transferred by the transfer unit.

2. A double-station LED display bulk chip mounter according to claim 1, characterized in that: A No. 2 plate (11) is provided below each No. 1 plate (8), a row of adsorption tubes (9) is fixedly connected to the lower surface of each No. 2 plate (11), and push rods (12) are fixedly connected to both ends of each No. 2 plate (11), each push rod (12) slides upward and penetrates the No. 1 plate (8), and the end of each push rod (12) is connected to the upper surface of the No. 1 plate (8) through a spring; A downward pressing assembly is symmetrically arranged above the material preparation unit, each downward pressing assembly comprises a No. 1 cylinder (13), each No. 1 cylinder (13) is located above the end of the transverse plate (4), and the No. 1 cylinder (13) is arranged in one-to-one correspondence with the material preparation plate (2); The output end of each No. 1 cylinder (13) is fixedly connected to a No. 3 plate (14), and pressure rods (15) are arranged on the lower surfaces of both ends of the No. 3 plate (14), and the pressure rods (15) can press down the push rod (12).

3. A double-station LED display bulk chip mounter according to claim 1, characterized in that: The discharging unit further comprises two longitudinal drive assemblies (16) arranged side by side, and a transverse drive assembly (17) arranged on the longitudinal drive assembly (16); the support plate (10) is mounted on the transverse drive assembly (17); and the longitudinal drive assembly (16) cooperates with the transverse drive assembly (17) to realize transverse and longitudinal movement of the support plate (10).

4. A double-station LED display bulk chip mounter according to claim 3, characterized in that: An air intake unit is arranged above the support plate (10), the air intake unit is used to cooperate with the adsorption tube (9), and the air intake unit includes a downward pressure component arranged above the support plate (10), and a plug (18) is fixedly connected to one side below the third plate (14) in the downward pressure component of the air intake unit, and the plug (18) is connected to an external air pump; The air intake unit further comprises an air valve fixedly connected to each No. 2 plate (11); the air valve comprises a valve body (19), the valve body (19) penetrates the No. 1 plate (8) upwards, an air hole (24) is provided in the center of the valve body (19) and penetrates upwards and downwards, the upper end of the air hole (24) is opposite to the insertion tube (18), and the lower end of the air hole (24) is connected to the adsorption tube (9) arranged on the lower surface of the No. 2 plate (11); The diameter of the lower half of the air hole (24) is greater than the diameter of the upper half, and a diameter reduction zone transition is arranged in the middle of the air hole (24). A truncated cone-shaped blocking block (21) is arranged at the position of the diameter reduction zone, and the blocking block (21) is connected to the second plate (11) through a compression spring.

5. A double-station LED display bulk chip mounter according to claim 2, characterized in that: Each of the material preparation plates (2) is hollow inside, and a plurality of negative pressure holes (22) are arranged side by side on the upper surface of each material preparation plate (2). A rectangular body (23) is provided on one side of each material preparation plate (2), and longitudinal and transverse staggered airways (20) are provided on the rectangular body (23). The longitudinal airway (20) connects the inside of the material preparation plate (2) with the external air pipe, and a sliding pin (25) connected with a compression spring is provided in the transverse airway (20). A radial through hole (26) is provided in the middle of the sliding pin (25), and the through hole (26) is connected with the longitudinal airway (20); An insertion rod (27) is provided at one end of each slide rail (1), the end of the insertion rod (27) is opposite to the end of the slide pin (25), and the insertion rod (27) can be inserted into the transverse airway (20) and pressed against the slide pin (25).

6. A double-station LED display screen bulk chip mounter according to claim 4, characterized in that: Each of the adsorption tubes (9) comprises an upper tube body (28) and a lower tube body (29); the upper tube body (28) and the lower tube body (29) are connected via a bellows (30); and a return spring (31) is provided on the outer ring of the bellows (30); and the two ends of the return spring (31) are respectively fixedly connected to the upper tube body (28) and the lower tube body (29).

7. A double-station LED display screen bulk chip mounter according to claim 6, characterized in that: An arc-shaped notch (32) is provided at the lower end of the lower tube body (29), and the inner surface shape of the notch (32) is adapted to the spherical shape of the lamp bead (101).

8. A double-station LED display screen bulk chip mounter according to claim 7, characterized in that: A silicone protective layer is adhered to the inner surface of the recess (32).

9. A double-station LED display screen bulk chip mounter according to claim 1, characterized in that: An annular body (33) is provided above the base (3), the annular body (33) is attached to the lower surface of the horizontal plate (4), and the annular body (33) is fixed to the base (3) via a plurality of support rods.

10. A double-station LED display screen bulk chip mounter according to claim 9, characterized in that: A rotation groove (34) is provided on the lower surface of the transverse plate (4), and the inner surface of the rotation groove (34) is adapted to the outer surface of the annular body (33).

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