CN112811147A

CN112811147A - Charging tray transmission system

Info

Publication number: CN112811147A
Application number: CN202110192801.2A
Authority: CN
Inventors: 不公告发明人
Original assignee: Jabil Circuit Shanghai Ltd
Current assignee: Jabil Circuit Shanghai Ltd
Priority date: 2021-02-20
Filing date: 2021-02-20
Publication date: 2021-05-18

Abstract

The invention discloses a material tray transmission system which can be applied to material ordering equipment and comprises a material loading device and a transmission device. The visual identification structure is arranged at the top end of the guide rod of the material loading device, and the central hole of the material tray is identified through the visual identification device on the mechanical arm and the top end structure of the guide rod, so that the central hole of the material tray can accurately penetrate through the guide rod. The guide rod fixing structure can firmly clamp the guide rod on the base of the loading device, and in the discharging process, the visual recognition device is only needed to recognize the top end structure of the guide rod once, so that the placing efficiency of the material tray is greatly improved. The conveying device comprises a horizontal conveying unit, wherein a claw and a push block which can push and pull the material carrying device are arranged, the purpose of conveying the material carrying device in a split range is achieved, the size of the conveying device is greatly reduced while enough stroke is guaranteed, and space and occupied area are saved. A large and small tray identification device is further arranged on one side of the conveying device, and the automatic material counting machine can be suitable for material counting machines with large and small tray production modes.

Description

Charging tray transmission system

Technical Field

The invention belongs to the technical field of material ordering equipment, and particularly relates to a material tray transmission system.

Background

At present, in the production process of Circuit boards, various electronic components such as capacitors and resistors are generally mounted on a Printed Circuit Board (PCB) by using Surface Mount Technology (SMT). In the process, the use frequency of the electronic components such as the capacitor and the resistor is very high, so that the updating and counting requirements of the SMT production enterprise on the materials such as the electronic components are particularly accurate.

In the prior art, electronic components such as capacitors and resistors are usually placed in a material tray, a large number of parts are stuck on a material belt, and the material belt is wound into the material tray. When going on some material machines and unloading, for improving the conveying efficiency of charging tray can stack a plurality of charging trays together perpendicularly and transmit usually, be CN 212098997U's chinese patent if the grant bulletin number, it discloses a material shallow, through setting up a plurality of material levels of putting on the base, in order to reach the purpose of saving the charging tray of a large amount, and then realize the quick material loading of charging tray through pushing away the car body, but to the some material equipment of multistation, above-mentioned material shallow still need carry through the manual work, thereby turnover between a plurality of stations, not only consuming time hard, and the walking of material shallow degree of accuracy is not high moreover.

In addition, chinese patent that the publication number is CN209142942U also discloses an automatic warehouse entry and exit system for SMT patch device charging trays, which comprises a charging tray conveying trolley, a material tray, a workstation frame, and six-axis robots arranged in the workstation frame, a vision inspection system, an electrical control cabinet and a charging tray grabbing mechanism, when in use, the automatic warehouse entry and exit system for SMT patch device charging trays is matched with the intelligent warehouse system for SMT patch materials, the warehouse entry and exit efficiency and accuracy of SMT materials can be greatly improved, but the system still cannot realize the automatic transmission of the charging tray conveying trolley. And above-mentioned charging tray transmission system does not all possess big or small charging tray recognition function, can not be applicable to the some material machines that have big, two kinds of production modes of small charging tray.

Therefore, there is a need for a tray transport system that can meet the requirements of high automation.

Disclosure of Invention

In view of the above-mentioned deficiencies of the prior art, the present invention aims to: the material tray transmission system capable of meeting the high-automation requirement is provided, the labor intensity is reduced, and the production efficiency is improved.

In order to achieve the purpose, the invention provides the following technical scheme:

a tray transport system comprising:

the loading device is used for loading the material tray;

and the conveying device is used for conveying the loading device.

The material loading device comprises:

the guide device comprises a base, wherein a plurality of guide devices are arranged on the base, and the guide devices comprise one or more of guide wheels, guide rails and guide grooves;

the guide rod is fixedly arranged on the base and is of an integrated structure or a sectional type assembly structure;

and the tray is used for bearing the material tray, penetrates through the guide rod and can slide up and down along the guide rod.

The top end of the guide rod is provided with visually identifiable structures including, but not limited to, holes, slots, protrusions, inserts, etc., preferably circular holes, for example, for ease of machining. When a plurality of charging trays need to be arranged on the tray in a stacked mode after penetrating through the guide rod through the mechanical arm, the vision recognition device, preferably a camera recognition device on the mechanical arm can indicate the mechanical arm to accurately place the charging trays by recognizing the center holes of the charging trays and the round holes in the top ends of the guide rods, and the center holes of the charging trays are ensured to penetrate through the guide rod.

The guide rod is fixedly arranged on the base through a guide rod fixing structure, the guide rod fixing structure comprises a first positioning block, a second positioning block and a plurality of screws, and the first positioning block is clamped with the tail end of the guide rod through a U-shaped groove in the first positioning block so as to lock the guide rod in the circumferential direction. The second positioning block is provided with a containing cavity matched with the first positioning block in shape, when the guide rod fixing structure is assembled, the first positioning block is clamped in the containing cavity, and the tail end of the guide rod and the second positioning block are fixedly connected with the base through the plurality of screws respectively so as to further lock the guide rod.

Generally, in order to improve the feeding and discharging efficiency of the material trays, a considerable number of material trays are required to be stacked on a guide rod of a slender structure, and the guide rod is easy to incline and loosen due to the overweight load.

A buffer block is connected below the tray through a screw, so that the tray is prevented from being damaged due to accidental falling.

The base is preferably made of light materials, and further preferably made of light metal materials, such as aluminum alloy and the like, so that the mechanical strength of the base is ensured, the weight of the device can be reduced, and the energy consumption of transportation is reduced. In addition, in order to prolong the service life of the base, a plurality of hard material reinforcing pieces are arranged on the stress part of the base, and the hard material is preferably stainless steel.

The base further comprises a plurality of first operation holes/grooves and a plurality of second operation holes/grooves, hooks on the push-pull unit of the material loading device can hook and pull the material loading device through the first operation holes/grooves, and when the material loading device is located at a material loading position, the material tray lifting mechanism at the material loading position can penetrate through the second operation holes/grooves to lift the tray, so that the material trays stacked on the tray are lifted.

In order to ensure that the material loading device keeps stable at the material loading position, a plurality of positioning holes/grooves are further arranged on the base and matched with positioning mechanisms in the material tray lifting mechanism, so that the material loading device is prevented from shaking or overturning in the lifting process and endangering the production safety.

In addition, in order to facilitate manual movement of the material loading device when necessary, the material loading device further comprises a push-pull handle, and the push-pull handle can adopt any structure known in the field, and is not described in detail herein.

The transmission device comprises a horizontal transmission unit, and the horizontal transmission unit comprises a first rack, a first transmission unit, a first induction unit and a material loading device push-pull unit. The first frame can adopt any structure known in the field, and the specific structure and the working principle of the first transmission unit, the first sensing unit and the material loading device push-pull unit are only explained below.

The first transmission unit includes:

the first servo motor is mounted on the first frame, a first belt wheel and a first transmission belt are arranged at the output end of the first servo motor, the first belt wheel is preferably a gear, the first transmission belt is preferably toothed on the inner side, and the toothed first transmission belt can be meshed with a tooth groove on the first belt wheel so as to improve the stability of power transmission;

the material loading device comprises a first guide rail arranged on the first frame, and the material loading device push-pull unit is slidably arranged on the first guide rail.

The material loading device push-pull unit comprises an installation frame, the installation frame is installed on a sliding plate, and the sliding plate is installed on the first guide rail through a sliding block fixed below the sliding plate; follow on the mounting bracket be provided with hook and ejector pad on the extending direction of first guide rail, just the below of hook and ejector pad all is provided with the lift cylinder, lift cylinder fixed mounting in on the mounting bracket.

The material loading device push-pull unit is connected with the first conveyor belt through a fixing device, preferably, the fixing device comprises a first connecting block and a second connecting block which are fixedly connected with each other, the first conveyor belt is clamped in the first connecting block by the first connecting block and the second connecting block, and the second connecting block is fixedly connected to the sliding plate.

When the first servo motor works, the first belt pulley drives the first conveyor belt to work, and the first conveyor belt drives the material loading device push-pull unit to slide back and forth along the first guide rail through a fixing device fixedly connected with the first conveyor belt.

The first sensing unit includes:

the first photoelectric sensor and the second photoelectric sensor are used for detecting the first induction sheet, and preferably, the first photoelectric sensor and the second photoelectric sensor are groove-type photoelectric sensors. The first photoelectric sensor and the second photoelectric sensor are fixed on the first rack, and the first induction sheet is fixed on the sliding plate and can move back and forth along with the sliding plate.

In an initial state, the material loading device push-pull unit is stopped at the middle position of the transmission device, namely the first induction sheet is positioned at a certain position between the first photoelectric sensor and the second photoelectric sensor. When the material loading device carries the material tray to the position right in front of the horizontal transmission unit, the system controls the horizontal transmission unit to start working, the material loading device push-pull unit moves towards the material loading device under the action of the first transmission unit, and when the first photoelectric sensor senses the first sensing piece, the system controls the material loading device push-pull unit to stop moving and the lifting cylinder to act, so that the hook claw is clamped into the first operation hole/groove of the material loading device, and the material loading device is driven to advance along with the material loading device push-pull unit. When the material loading device push-pull unit moves to the position where the second photoelectric sensor senses the first sensing piece, the system controls the material loading device push-pull unit to stop moving, the lifting cylinder moves to enable the hook claw to be separated from the first operation hole/groove of the material loading device, then the material loading device push-pull unit moves to the rear of the material loading device, the system controls the lifting cylinder to move, the push block rises to the position where the push block is located on the same horizontal plane with the base of the material loading device, the push block pushes the material loading device to continue to advance, and the push block acts on the reinforcing piece on the base.

According to the invention, the horizontal transmission unit is internally provided with the hook claw and the push block which can push and pull the material loading device, so that the material loading device can be conveyed in a split-range manner, the material loading device is ensured to have enough stroke, the volume of the transmission device is greatly reduced, and the space and the occupied area are saved. It can be understood that the system can control the loading device push-pull unit (203) to push and pull the loading device (1) in two or more steps (at least three steps) according to the stroke requirement, and the system is not limited in the process.

The first rack is also provided with a plurality of bull-eye wheels, and the bull-eye wheels are in sliding fit with the base of the material loading device so as to reduce the friction force of the material loading device when the material loading device push-pull unit pushes and pulls the material loading device.

The first rack is also provided with two limiting devices, and the two limiting devices are respectively positioned at two extreme positions of the movement track of the sliding block, so that the push-pull unit of the loading device is prevented from sliding away from the first guide rail.

The first frame is further provided with a first drag chain, the moving end of the first drag chain is fixed on the sliding plate through a first drag chain connecting piece and can perform reciprocating linear motion along with the material loading device push-pull unit, and the first drag chain is used for protecting equipment wires, air cylinder pipelines and the like from being entangled with each other and damaged in multiple motions.

The first rack is further provided with a proximity switch and a blocking cylinder, the proximity switch is used for detecting whether the material loading device is in place, and the blocking cylinder is controlled by the system to block and release the material loading device through stretching.

The transmission device further comprises a vertical transmission unit which is arranged right in front of the horizontal transmission unit.

The vertical transmission unit comprises two lifting units which are arranged in parallel relatively, each lifting unit comprises a lifting cylinder and a lifting cylinder mounting plate, the output end of each lifting cylinder is fixedly connected with the material loading device bearing mechanism, preferably, the material loading device bearing mechanisms are formed by splicing a plurality of bearing plates for convenience of processing, and in other embodiments, the material loading device bearing mechanisms can also be of an integrated structure.

The lifting cylinder mounting plate is provided with a plurality of guide rods, and the material carrying device bearing mechanism can move up and down along the guide rods under the action of the lifting cylinder.

The material carrying device bearing mechanism is provided with a plurality of bull-eye wheels, and the bull-eye wheels are in sliding fit with a base of the material carrying device so as to reduce the friction force of the material carrying device when the material carrying device push-pull unit hooks the material carrying device.

A non-return block is arranged at an inlet of the material loading device on the material loading device bearing mechanism and is pivotally arranged on the bearing plate; and a pressing plate is further arranged at the outlet of the material loading device on the material loading device bearing mechanism.

In an initial state, the bearing surface of the bearing mechanism of the material loading device and the material loading device are positioned on the same horizontal plane, the blocking module at the upper end of the non-return block is also positioned in a horizontal position, the material loading device is pushed into the vertical transmission unit, and after the material loading device completely enters the vertical transmission unit, the pressing plate has a limiting effect on the base of the material loading device, so that the material loading device is prevented from overturning and causing production accidents in the lifting process. The lifting cylinder drives the material loading device bearing mechanism to move upwards until the material loading device bearing mechanism and the horizontal transmission unit are positioned on the same horizontal plane, and the system controls the horizontal transmission unit to start working, wherein the working process is as described above. In addition, in the ascending process of the loading device bearing mechanism, the non-return block overturns under the action of gravity, so that the loading device is prevented from sliding out.

The lifting unit may be fixed to the plant floor or the equipment rack using any mounting means known in the art and will not be described herein.

The tray transmission system further comprises a large tray identification device and a small tray identification device, the large tray identification device and the small tray identification device are arranged on one side of the transmission device and are used for identifying the size of the tray and further transmitting an identification result to the control system, and the control system executes a corresponding instruction according to the identification result.

The large and small tray identification device comprises a second rack, a second transmission unit and a second sensing unit. The second frame may take any structure known in the art, and only the specific structure and operation principle of the second transmission unit and the second sensing unit will be described below.

The second transmission unit includes:

the output end of the second servo motor is provided with a second belt wheel and a second conveyor belt, the second belt wheel is preferably a gear, the second conveyor belt is preferably toothed on the inner side, and the toothed second conveyor belt can be meshed with a tooth groove on the second belt wheel so as to improve the stability of power transmission;

a second guide rail installed on the second frame, on which a moving plate is slidably installed, preferably, the moving plate is installed on the second guide rail by a slide block fixed therebelow;

the moving plate is connected with the second conveyor belt through a fixing device, preferably, the fixing device comprises a third connecting block and a fourth connecting block which are fixedly connected with each other, the third connecting block and the fourth connecting block clamp the second conveyor belt therein, and the third connecting block is fixedly connected on the moving plate.

When the second servo motor works, the second belt wheel drives the second conveyor belt to work, the second conveyor belt drives the moving plate to slide back and forth along the second guide rail through a fixing device fixedly connected with the second conveyor belt, and the second rack is further provided with two limiting blocks which are respectively located at two limit positions of the motion track of the sliding block.

The second sensing unit includes: the third photoelectric sensor and the fourth photoelectric sensor are used for detecting the second induction sheet, and preferably, the third photoelectric sensor and the fourth photoelectric sensor are groove-type photoelectric sensors.

Preferably, the third photoelectric sensor and the fourth photoelectric sensor are fixed on the second frame, and the second sensing piece is fixed on the moving plate and can move back and forth along with the moving plate. It can be understood that, because the third photosensor, the fourth photosensor and the second sensing piece move relatively, in other embodiments, the second sensing piece may be fixed to the second frame, and the third photosensor and the fourth photosensor may be fixed to the moving plate and may move back and forth along with the moving plate, so as to achieve the object of the present invention.

The movable plate is characterized in that the movable plate is further provided with an induction plate, a plurality of guide columns are fixed on the induction plate, the other ends of the guide columns movably penetrate through an induction plate mounting plate, a reset spring is sleeved on part or all of the guide columns, the induction plate mounting plate is fixed on the movable plate, a plurality of proximity switches are further arranged on the induction plate, and one ends of the proximity switches are opposite to the induction plate.

In an initial state, the second sensing piece is located in the sensing groove of the third photoelectric sensor, and a first distance is provided between one end of the proximity switch close to the sensing plate and the sensing plate, preferably, the first distance is set to be 15 mm. When the material loading device carries the material tray to the position right ahead of the large and small material tray identification devices, the system controls the large and small material tray identification devices to start working, and the induction plate moves towards the material tray in the material loading device under the action of the second transmission unit. If the induction plate is blocked after contacting the material tray, the reset spring is compressed, and after the distance between the induction plate and the proximity switch is reduced to a second distance, the proximity switch is triggered, the system controls the second transmission unit to stop and reset, and simultaneously judges that the material tray is a large material tray, and preferably, the second distance is set to be 10 mm; if the induction plate is not blocked in the advancing process, the fourth photoelectric sensor induces the second induction sheet, and the charging tray is judged to be a small charging tray.

In the present invention, the large tray is not less than 8 inches, such as 8 inches, 11 inches, 13 inches or 15 inches, and the small tray is less than 8 inches, such as 7 inches, and it can be understood that a person skilled in the art can define the large tray and the small tray according to actual production needs, and comprehensively set the first distance, the second distance, the distance between the third photoelectric sensor and the fourth photoelectric sensor, and the distance from the sensing plate to the tray in an initial state.

In order to protect the proximity switch from being collided by the induction plate in an accidental state, a plurality of limiting bolts are further arranged on the induction plate mounting plate.

The second frame is also provided with a second drag chain, the moving end of the second drag chain is fixed on the moving plate through a second drag chain connecting piece and can move along with the moving plate in a reciprocating linear motion, and the second drag chain is used for protecting equipment wires and the like from being entangled with each other and damaged in multiple movements.

Compared with the prior art, the invention has the beneficial effects that:

1. in the loading device, the top end of the guide rod is provided with the visual identification structure, when a plurality of material trays need to pass through the guide rod and are stacked on the tray through the mechanical arm, the visual identification device on the mechanical arm can indicate the mechanical arm to accurately place the material trays by identifying the central hole of the material trays and the top end structure of the guide rod, and the central hole of the material tray is ensured to pass through the guide rod. The guide rod fixing structure can firmly clamp the guide rod on the base, and the guide rod cannot incline or loosen in the feeding and discharging process of the material tray, so that the visual identification device is only needed to identify the top end structure of the guide rod once in the feeding process, and the placing efficiency of the material tray is greatly improved.

2. The conveying device comprises a horizontal conveying unit, and the horizontal conveying unit is internally provided with a hook claw and a push block which can push and pull the material loading device, so that the material loading device can be conveyed in different ranges, the material loading device is ensured to have enough stroke, the volume of the conveying device is greatly reduced, and the space and the occupied area are saved.

3. In the preferred embodiment of the invention, a vertical transmission unit matched with the horizontal transmission unit is further arranged, so that the conveying automation degree of the loading device is further improved.

4. According to the invention, a large and small tray identification device is arranged on one side of the transmission device and used for identifying the size of the material tray and further transmitting an identification result to the control system, and the control system executes a corresponding instruction according to the identification result, so that the material counting machine is suitable for material counting machines with two production modes of large and small material trays.

Drawings

In order to more clearly illustrate the technical solutions in the specific embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive efforts.

FIG. 1 is an exploded view of a tray transport system in an embodiment;

FIG. 2 is a schematic structural diagram of a loading device in the embodiment;

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2;

FIG. 4 is an exploded view of a first perspective structure of the loading device in the embodiment;

FIG. 5 is an exploded view of a second perspective of the loading device in the embodiment;

FIG. 6 is a partial structural sectional view of a loading device in the embodiment;

FIG. 7 is a schematic structural view of a base in the embodiment;

FIG. 8 is a schematic diagram illustrating a first perspective structure of a horizontal transfer unit according to an embodiment;

FIG. 9 is a diagram illustrating a second perspective structure of the horizontal transfer unit according to the embodiment;

FIG. 10 is a first perspective view of the push-pull unit of the loading device in an embodiment;

FIG. 11 is a second perspective view of the push-pull unit of the loading device in an embodiment;

FIG. 12 is a schematic structural view of a vertical transfer unit in an embodiment;

FIG. 13 is a schematic structural diagram of a loading mechanism of the loading device in the embodiment;

FIG. 14 is a schematic diagram showing a first perspective structure of the large and small tray recognition device in the embodiment;

FIG. 15 is a schematic diagram showing a second perspective structure of the large and small tray recognition device in the embodiment;

fig. 16 is a third view structure diagram of the large and small tray identification device in the embodiment.

Reference numerals: 1-material loading device, 101-base, 1011-reinforcing part, 1012-first operation hole/groove, 1013-second operation hole/groove, 1014-positioning hole, 102-guide rod, 1021-round hole, 1023-first positioning block, 1024-second positioning block, 1025-containing cavity, 103-tray, 1031-buffer block, 104-push-pull handle, 105-guide wheel, 2-horizontal transmission unit, 201-first frame, 2021-first servo motor, 2022-first belt wheel, 2023-first transmission belt, 203-material loading device push-pull unit, 2031-hook claw, 2032, 2034-lifting cylinder, 2033-push block, 2035-slide block, 2036-slide plate, 2037-first connection block, 2038-second connection block, 204-first guide rail, 2041-limiting device, 205, 308-bull's eye wheel, 206-first drag chain, 2061-first drag chain connecting piece, 2071-first photoelectric sensor, 2072-second photoelectric sensor, 2073-first sensing piece, 208-proximity switch, 209-blocking cylinder, 3-vertical transmission unit, 301-lifting cylinder, 302-lifting cylinder mounting plate, 303, 305, 306-bearing plate, 304-guide rod, 307-non-return block, 309-pressing plate, 4-large and small material tray identification device, 401-second frame, 4021-second servo motor, 4022-second belt wheel, 4023-second conveyor belt, 4024-second guide rail, 4025-sliding block, 4026-moving plate, 4027-third connecting block, 8-fourth connecting block, 4029-limiting block, 403-second tow chain, 4031-second tow chain connector, 4041-third photoelectric sensor, 4042-fourth photoelectric sensor, 4043-second induction piece, 4051-proximity switch, 4052-induction board mounting plate, 4053-induction board, 4054-guide post, 4055-limit bolt mounting hole.

Detailed Description

The technical solutions in the specific embodiments of the present invention will be clearly and completely described below, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, a tray conveying system includes:

the loading device (1) is used for loading a material tray (not shown in the figure);

and the conveying device is used for conveying the loading device (1).

As shown in fig. 2, the loading device (1) includes:

the device comprises a base (101), wherein a plurality of guide wheels (105) are arranged on the base (101);

the guide rod (102), the guide rod (102) is fixedly installed on the base (101), in the embodiment, the guide rod (102) is of an integral structure, and in other embodiments, the guide rod can also be of a sectional assembly structure;

the tray (103) is used for bearing the material tray, and the tray (103) penetrates through the guide rod (102) and can slide up and down along the guide rod (102).

Fig. 3 is an enlarged view of a point a in fig. 2, and as shown in the figure, a circular hole (1021) is formed at the top end of the guide rod (102). When a plurality of trays need to be arranged on the tray (103) in a stacked mode through the guide rod (102) after penetrating through the mechanical arm, a visual recognition device (not shown in the figure), preferably a camera recognition device, on the mechanical arm indicates the mechanical arm to accurately place the trays through recognizing the center holes of the trays and the round holes (1021) in the top end of the guide rod (102), and the center holes of the trays are ensured to penetrate through the guide rod (102).

Guide arm (102) pass through guide arm fixed knot to construct fixed mounting in on base (101), as shown in fig. 4-6, guide arm fixed knot constructs including first locating piece (1023), second locating piece (1024) and a plurality of screw (not shown in the figure), first locating piece (1023) through its U-shaped groove with guide arm (102) end block to locking guide arm (102) in circumference. Be provided with on second locating piece (1024) with holding chamber (1025) that the shape of first locating piece (1023) suits, when the guide arm fixed knot constructs the equipment back, first locating piece (1023) card is arranged in hold chamber (1025), just the end of guide arm (102) with second locating piece (1024) respectively through a plurality of screws with base (101) fixed connection, in order to further lock dead guide arm (102).

Generally, in order to improve the feeding and discharging efficiency of the material tray, a certain number of material trays are required to be stacked on a guide rod with a slender structure, and the guide rod is easy to incline and loosen due to the overweight load, the guide rod (102) can be stably clamped on the base (101) through the guide rod fixing structure, and the guide rod (102) cannot incline and loosen in the feeding and discharging process of the material tray, so that the visual identification device is only required to identify the round hole (1021) once in the discharging process, and the placing efficiency of the material tray is greatly improved.

A buffer block (1031) is connected to the lower portion of the tray (103) through screws, so that damage to the tray (103) due to accidental falling is avoided.

The base (101) is made of aluminum alloy, so that the mechanical strength of the base is guaranteed, the weight of the device can be reduced, and the transmission energy consumption is saved. In addition, in order to prolong the service life of the base (101), a plurality of stainless steel reinforcing pieces (1011) are arranged on the stress parts.

As shown in fig. 7, the base (101) further includes a plurality of first working holes/grooves (1012) and second working holes/grooves (1013), hooks (2031) on the loader push-pull unit (203) can hook and pull the loader (1) through the first working holes/grooves (1012), and when the loader (1) is at a loading position, a tray lifting mechanism (not shown) at the loading position can lift the tray (103) through the second working holes/grooves (1013), so as to lift the trays stacked on the tray (103).

In order to ensure that the loading device (1) is stable at the loading position, a plurality of positioning holes (1014) are further formed in the base (101), and the positioning holes (1014) are matched with a positioning mechanism (not shown in the figure) in the tray lifting mechanism, so that the situation that the loading device (1) shakes or overturns in the lifting process and the production safety is endangered is avoided.

In addition, in order to facilitate manual movement of the material loading device (1) when necessary, the material loading device further comprises a push-pull handle (104), and the push-pull handle (104) can adopt any structure known in the art and is not described in detail herein.

The transmission device comprises a horizontal transmission unit (2), and as shown in fig. 8, the horizontal transmission unit (2) comprises a first rack (201), a first transmission unit, a first induction unit and a material loading device push-pull unit (203). The first frame (201) can adopt any structure known in the field, and the specific structure and the working principle of the first transmission unit, the first sensing unit and the material loading device push-pull unit (203) are only explained below.

As shown in fig. 9 to 11, the first transmission unit includes:

the first servo motor (2021) is mounted on the first frame (201), the output end of the first servo motor (2021) is provided with a first belt pulley (2022) and a first conveyor belt (2023), the first belt pulley (2022) is a gear, the inner side of the first conveyor belt (2023) is provided with a belt, and the first conveyor belt (2023) with a belt can be meshed with a tooth slot on the first belt pulley (2022) to improve the stability of power transmission;

a first guide rail (204) mounted on the first frame (201), the loader push-pull unit (203) being slidably mounted on the first guide rail (204).

The material loading device push-pull unit (203) comprises a mounting rack, the mounting rack is mounted on a sliding plate (2036), and the sliding plate (2036) is mounted on the first guide rail (204) through a sliding block (2035) fixed below the sliding plate; follow on the mounting bracket be provided with hook (2031) and ejector pad (2033) on the extending direction of first guide rail (204), just the below of hook (2031) and ejector pad (2033) all is provided with lift cylinder (2032, 2034), lift cylinder (2032, 2034) fixed mounting in on the mounting bracket.

The material loading device push-pull unit (203) is connected with the first conveyor belt (2023) through a fixing device (2037, 2038), the fixing device (2037, 2038) comprises a first connecting block (2037) and a second connecting block (2038) which are fixedly connected with each other, the first conveyor belt (2023) is clamped in the first connecting block (2037) and the second connecting block (2038), and the second connecting block (2038) is fixedly connected on the sliding plate (2036).

When the first servo motor (2021) works, the first belt wheel (2022) drives the first conveyor belt (2023) to work, and the first conveyor belt (2023) drives the material loading device push-pull unit (203) to slide back and forth along the first guide rail (204) through fixing devices (2037, 2038) fixedly connected with the first conveyor belt.

As shown in fig. 10, the first sensing unit includes:

first photoelectric sensor (2071), second photoelectric sensor (2072) and first response piece (2073), first photoelectric sensor (2071), second photoelectric sensor (2072) all are used for detecting first response piece (2073), first photoelectric sensor (2071), second photoelectric sensor (2072) are the cell type photoelectric sensor. The first photoelectric sensor (2071) and the second photoelectric sensor (2072) are fixed on the first frame (201), and the first induction sheet (2073) is fixed on the sliding plate (2036) and can move back and forth along with the sliding plate (2036).

In an initial state, the material loading device push-pull unit (203) is stopped at a middle position of the transmission device, namely the first induction sheet (2073) is positioned at a certain position between the first photoelectric sensor (2071) and the second photoelectric sensor (2072). When the material loading device (1) carries the material tray to the position right in front of the horizontal transmission unit (2), the system controls the horizontal transmission unit (2) to start working, the material loading device push-pull unit (203) moves towards the material loading device (1) under the action of the first transmission unit, and when the first photoelectric sensor (2071) senses the first sensing piece (2073), the system controls the material loading device push-pull unit (203) to stop moving and the lifting cylinder (2032) to act, so that the hook claw (2031) is clamped into a first working hole/groove (1012) of the material loading device (1), and the material loading device (1) is driven to advance along with the material loading device push-pull unit (203). When the material loading device push-pull unit (203) moves to the second photoelectric sensor (2072) and senses the first sensing piece (2073), the system controls the material loading device push-pull unit (203) to stop moving, the lifting cylinder (2032) acts to enable the hook claw (2031) to be separated from the first operation hole/groove (1012) of the material loading device (1), then the material loading device push-pull unit (203) moves to the rear of the material loading device (1), the system controls the lifting cylinder (2034) to act to enable the push block (2033) to ascend to the position on the same horizontal plane with the base (101) of the material loading device (1), the material loading device (1) is pushed to continue to advance through the push block (2033), and the push block (2033) acts on the reinforcing piece (1011) on the base (101).

In this embodiment, the loader push-pull unit (203) pushes and pulls the loader (1) in two steps, but in other embodiments, the system can also control the loader push-pull unit (203) to push and pull the loader (1) in multiple steps (at least three steps) according to the travel requirement.

According to the invention, the horizontal transmission unit (2) is provided with the hook claw (2031) and the push block (2033) which can push and pull the material loading device (1), so that the material loading device (1) can be conveyed in different ranges, the material loading device (1) is ensured to have enough stroke, the volume of the transmission device is greatly reduced, and the space and the occupied area are saved.

The first rack (201) is further provided with a plurality of bull-eye wheels (205), and the bull-eye wheels (205) are in sliding fit with the base (101) of the loading device (1) so as to reduce the friction force of the loading device pushing and pulling unit (203) for pushing and pulling the loading device (1).

The first rack (201) is further provided with two limiting devices (2041), the two limiting devices (2041) are respectively located at two limit positions of the movement track of the sliding block (2035), and the sliding separation of the material loading device push-pull unit (203) from the first guide rail (204) is avoided.

The first rack (201) is further provided with a first drag chain (206), the moving end of the first drag chain (206) is fixed on the sliding plate (2036) through a first drag chain connecting piece (2061) and can perform reciprocating linear motion along with the material loading device push-pull unit (203), and the first drag chain (206) is used for protecting equipment wires, cylinder pipelines and the like from being entangled and damaged in multiple movements.

The first rack (201) is further provided with a proximity switch (208) and a blocking cylinder (209), the proximity switch (208) is used for detecting whether the loading device (1) is in place or not, and the blocking cylinder (209) is controlled by a system to block and release the loading device (1) through stretching.

In this embodiment, the transfer device further comprises a vertical transfer unit (3), and the vertical transfer unit (3) is disposed right in front of the horizontal transfer unit (2).

As shown in fig. 12, the vertical transmission unit (3) includes two lifting units arranged in parallel, the lifting units include a lifting cylinder (301) and a lifting cylinder mounting plate (302), an output end of the lifting cylinder (301) is fixedly connected to a carrying mechanism of the material loading device, in this embodiment, for convenience of processing, the carrying mechanism of the material loading device is formed by splicing a plurality of carrying plates (303, 305, 306), and in other embodiments, the carrying mechanism of the material loading device may also be an integrated structure.

The lifting cylinder mounting plate (302) is provided with a plurality of guide rods (304), and the material loading device bearing mechanism can move up and down along the guide rods (304) under the action of the lifting cylinder (301).

As shown in fig. 13, a plurality of bull-eye wheels (308) are arranged on the carrying mechanism of the carrying device, and the bull-eye wheels (308) are in sliding fit with the base (101) of the carrying device (1) to reduce the friction force of the carrying device (1) when the pushing and pulling unit (203) of the carrying device hooks.

A non-return block (307) is arranged at an inlet of the material loading device on the material loading device bearing mechanism, and the non-return block (307) is pivotally arranged on the bearing plate (306); and a pressing plate (309) is further arranged at the outlet of the material loading device on the material loading device bearing mechanism.

In an initial state, the bearing surface of the bearing mechanism of the material loading device and the material loading device (1) are located on the same horizontal plane, the upper end blocking module of the non-return block (307) is also located at a horizontal position (not shown in the figure), the material loading device (1) is pushed into the vertical transmission unit (3) along the X direction shown in the figure, and after the material loading device (1) completely enters the vertical transmission unit (3), the pressing plate (309) has a limiting effect on the base (101) of the material loading device (1), so that the material loading device (1) is prevented from overturning and causing production accidents in the lifting process. The lifting cylinder (301) drives the material loading device bearing mechanism to move upwards until the material loading device bearing mechanism and the horizontal transmission unit (2) are located on the same horizontal plane, and the system controls the horizontal transmission unit (2) to start working, wherein the working process is as described above. In addition, in the ascending process of the loading mechanism of the loading device, the non-return block (307) is turned over under the action of gravity, the state shown in fig. 13 is kept, and the effect of preventing the loading device (1) from sliding out is achieved.

As shown in fig. 1, the tray transportation system in this embodiment further includes a large and small tray recognition device (4) disposed on one side of the transportation device for recognizing the size of the tray and further transmitting the recognition result to the control system, and the control system executes the corresponding instruction according to the recognition result.

As shown in fig. 14 to 15, the large and small tray recognition apparatus (4) includes a second rack (401), a second transmission unit, and a second sensing unit. The second frame (401) may take any structure known in the art, and only the specific structure and operation principle of the second transmission unit and the second sensing unit will be described below.

The second transmission unit includes:

a second servo motor (4021) mounted on the second frame (401), wherein an output end of the second servo motor (4021) is provided with a second belt pulley (4022) and a second transmission belt (4023), the second belt pulley (4022) is a gear, the inner side of the second transmission belt (4023) is toothed, and the second transmission belt (4023) with teeth can be meshed with tooth grooves on the second belt pulley (4022) to improve the stability of power transmission;

a second guide rail (4024) mounted on the second frame (401), a moving plate (4026) slidably mounted on the second guide rail (4024), the moving plate (4026) being mounted on the second guide rail (4024) by a slide block (4025) fixed therebelow;

the moving plate (4026) is connected with the second conveyor belt (4023) through a fixing device (4027, 4028), the fixing device (4027, 4028) comprises a third connecting block (4027) and a fourth connecting block (4028) fixedly connected with each other, the third connecting block (4027) and the fourth connecting block (4028) clamp the second conveyor belt (4023) therein, and the third connecting block (4027) is fixedly connected with the moving plate (4026).

When the second servo motor (4021) works, the second belt wheel (4022) drives the second conveyor belt (4023) to work, and the second conveyor belt (4023) drives the moving plate (4026) to slide back and forth along the second guide rail (4024) through fixing devices (4027, 4028) fixedly connected with the second conveyor belt. Two limiting blocks (4029) are further arranged on the second frame (401), and the two limiting blocks (4029) are respectively located at two limiting positions of the motion track of the sliding block (4025).

As shown in fig. 15, the second sensing unit includes: third photoelectric sensor (4041), fourth photoelectric sensor (4042) and second response piece (4043), third photoelectric sensor (4041), fourth photoelectric sensor (4042) are used for detecting second response piece (4043), third photoelectric sensor (4041), fourth photoelectric sensor (4042) are the cell type photoelectric sensor.

In this embodiment, the third photoelectric sensor (4041) and the fourth photoelectric sensor (4042) are fixed on the second rack (401), and the second sensing piece (4043) is fixed on the moving board (4026) and can move back and forth along with the moving board (4026), it can be understood that, because the third photoelectric sensor (4041), the fourth photoelectric sensor (4042) and the second sensing piece (4043) move relatively, in other embodiments, the second sensing piece (4043) can also be fixed on the second rack (401), and the third photoelectric sensor (4041) and the fourth photoelectric sensor (4042) can also be fixed on the moving board (4026) and can move back and forth along with the moving board (4026), which can achieve the purpose of the present invention.

The movable plate (4026) is further provided with an induction plate (4053), the induction plate (4053) is fixed with a plurality of guide posts (4054), the other ends of the guide posts (4054) movably penetrate through an induction plate mounting plate (4052), a reset spring (not shown in the figure) is partially or completely sleeved on the guide posts (4054), the induction plate mounting plate (4052) is fixed on the movable plate (4026), a plurality of proximity switches (4051) are further arranged on the induction plate, and one end of each proximity switch (4051) is opposite to the induction plate (4053).

In the initial state, the second sensing piece (4043) is located in the sensing slot of the third photoelectric sensor (4041), and a first distance is provided between one end of the proximity switch (4051) close to the sensing board (4053) and the sensing board (4053), and in this embodiment, the first distance is set to be 15 mm. When the material loading device (1) carries the material tray to the position right ahead the large and small material tray identification device (4), the system controls the large and small material tray identification device (4) to start working, and the induction plate (4053) moves towards the material tray in the material loading device (1) under the action of the second transmission unit. If the induction plate (4053) is blocked after contacting the material tray, the return spring is compressed, and after the distance between the induction plate (4053) and the proximity switch (4051) is reduced to a second distance, the proximity switch (4051) is triggered, the system controls the second transmission unit to stop and return, and meanwhile, the material tray is judged to be a large material tray, and in the embodiment, the second distance is set to be 10 mm; if the induction plate (4053) is not blocked in the advancing process, the fourth photoelectric sensor (4042) induces the second induction sheet (4043), and the charging tray is judged to be a small charging tray.

In this embodiment, the large tray is not less than 8 inches, such as 8 inches, 11 inches, 13 inches or 15 inches, and the small tray is less than 8 inches, such as 7 inches, and it can be understood that, in other embodiments, a person skilled in the art can define the large tray and the small tray according to actual production needs, and comprehensively set the first distance, the second distance, the distance between the third photoelectric sensor (4041) and the fourth photoelectric sensor (4042), and the distance from the sensing plate (4053) to the tray in an initial state.

In order to protect the proximity switch (4051) from being collided by the sensing plate (4053) in an accidental state, a plurality of limiting bolts (the limiting bolts are not shown in the figure, and only the limiting bolt mounting holes 4055 are shown) are further arranged on the sensing plate mounting plate (4052).

The second rack (401) is further provided with a second drag chain (403), the moving end of the second drag chain (403) is fixed on the moving plate (4026) through a second drag chain connecting piece (4031) and can move back and forth along with the moving plate (4026), and the second drag chain (403) is used for protecting equipment wires and the like from being entangled with each other in multiple movements and being damaged.

The tray conveying system provided by the invention is described in detail, a specific example is applied in the description to explain the structure and the working principle of the invention, and the description of the above embodiment is only used for helping to understand the method and the core idea of the invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. A tray transport system comprising:

the loading device is used for loading the material tray;

and the conveying device is used for conveying the loading device.

2. The tray transport system of claim 1, wherein the loading device comprises:

3. The tray transport system of claim 2, wherein the top end of the guide bar is configured to be positioned

There are visually identifiable structures including, but not limited to, holes, slots, protrusions, inserts.

4. The tray transport system of claim 2, wherein the guide rods are secured by guide rods

The fixed structure is fixedly arranged on the base, the guide rod fixing structure comprises a first positioning block, a second positioning block and a plurality of screws, and the first positioning block is clamped with the tail end of the guide rod through a U-shaped groove in the first positioning block.

5. The tray transport system of claim 4, wherein the second positioning block is provided with a positioning hole

The guide rod fixing structure is provided with a containing cavity matched with the first positioning block in shape, when the guide rod fixing structure is assembled, the first positioning block is clamped in the containing cavity, and the tail end of the guide rod and the second positioning block are fixedly connected with the base through the plurality of screws respectively.

6. Tray transport system according to any of claims 2-5, characterized in that the tray is below the tray

The buffer block is connected with the screw.

7. Tray transport system according to any of claims 2-5, characterized in that the base consists of

The light-weight material is made of light material, and a plurality of hard material reinforcing pieces are arranged at the stressed part of the light-weight material.

8. Tray transport system according to any of claims 2-5, characterized in that the base is also equipped with

Comprises a plurality of first operation holes/grooves, second operation holes/grooves and positioning holes.

9. Tray transport system according to claim 1, characterized in that the transport means comprise water

The horizontal transmission unit comprises a first rack, a first transmission unit, a first sensing unit and a material loading device push-pull unit.

10. Tray transport system according to claim 9, characterized in that the first transfer unit

The method comprises the following steps:

the first servo motor is arranged on the first rack, and a first belt wheel and a first conveyor belt are arranged at the output end of the first servo motor;

11. The tray transport system of claim 10, wherein the first pulleys are teeth

And the inner side of the first belt is provided with teeth, and the first belt with the teeth can be meshed with tooth grooves on the first belt wheel.

12. The tray transport system of claim 9, wherein the loader push-pull blade

The element comprises a mounting rack, wherein the mounting rack is arranged on a sliding plate, and the sliding plate is arranged on the first guide rail through a sliding block fixed below the sliding plate; follow on the mounting bracket be provided with hook and ejector pad on the extending direction of first guide rail, just the below of hook and ejector pad all is provided with the lift cylinder, lift cylinder fixed mounting in on the mounting bracket.

13. The tray transport system of claim 12, wherein the loader pushes or pulls

The unit is connected with the first conveyor belt through a fixing device, the fixing device comprises a first connecting block and a second connecting block which are fixedly connected with each other, the first conveyor belt is clamped in the first connecting block and the second connecting block, and the second connecting block is fixedly connected to the sliding plate.

14. The tray transport system of claim 12, wherein the first rack is further configured with a tray guide

Two limiting devices are arranged and are respectively positioned at two extreme positions of the motion trail of the sliding block.

15. The tray transport system of claim 9, wherein the first induction unit pack

Comprises the following steps: first photoelectric sensor, second photoelectric sensor and first response piece, first photoelectric sensor, second photoelectric sensor all are used for detecting first response piece, first photoelectric sensor, second photoelectric sensor are the cell type photoelectric sensor.

16. The tray transport system of claim 15, wherein the first photo-sensor is configured to sense light from the first photo-sensor

The device and the second photoelectric sensor are fixed on the first rack, and the first induction sheet is fixed on the sliding plate and can move back and forth along with the sliding plate.

17. Tray transport system according to any of claims 9-16, characterized in that the first tray is arranged to be moved in a first direction

Still be provided with a plurality of bull's eyes wheels in the frame, a plurality of bull's eyes wheels with carry material device's base sliding fit.

18. Tray transport system according to any of claims 9-16, characterized in that the first tray is arranged to be moved in a first direction

The rack is also provided with a first drag chain, and the moving end of the first drag chain is fixed on the sliding plate through a first drag chain connecting piece and can move back and forth along with the push-pull unit of the loading device.

19. The tray transport system of claim 1, wherein the transport device further comprises

A vertical transfer unit disposed right in front of the horizontal transfer unit.

20. The tray transport system of claim 19, wherein the vertical transport unit

The lifting unit comprises a lifting cylinder and a lifting cylinder mounting plate, and the output end of the lifting cylinder is fixedly connected with a loading device bearing mechanism.

21. The tray transport system of claim 20, wherein the lift cylinder mounts

The plate is provided with a plurality of guide rods, and the material loading device bearing mechanism can move up and down along the guide rods under the action of the lifting cylinder.

22. Tray transport system according to claim 20 or 21, wherein the loading means are provided with a loading device

A plurality of bull's eyes wheels are arranged on the bearing mechanism, and the bull's eyes wheels are in sliding fit with the base of the material loading device.

23. Tray transport system according to claim 20 or 21, wherein the loading means are provided with a loading device

A non-return block is arranged at an inlet of the material loading device on the bearing mechanism and is pivotally arranged on the bearing plate; and a pressing plate is further arranged at the outlet of the material loading device on the material loading device bearing mechanism.

24. The tray transport system of claim 1, further comprising a tray transport system

The automatic tray feeding device comprises a large tray identification device and a small tray identification device, wherein the large tray identification device is arranged on one side of the transmission device and is used for identifying the size of the tray.

25. The tray transport system of claim 24, wherein the large and small tray identification

The device comprises a second rack, a second transmission unit and a second sensing unit.

26. Tray transport system according to claim 25, characterized in that the second drive unit

The method comprises the following steps:

the output end of the second servo motor is provided with a second belt wheel and a second conveying belt;

a second guide rail installed on the second frame, on which a moving plate is slidably installed;

the moving plate is connected with the second conveyor belt through a fixing device, the fixing device comprises a third connecting block and a fourth connecting block which are fixedly connected with each other, the third connecting block and the fourth connecting block clamp the second conveyor belt in the third connecting block and the fourth connecting block, and the third connecting block is fixedly connected to the moving plate.

27. The tray transport system of claim 26, wherein the kinematic plate is further provided with a slide

The induction plate is provided with a plurality of guide columns, the other ends of the guide columns movably penetrate through an induction plate mounting plate, a reset spring is partially or completely sleeved on the guide columns, the induction plate mounting plate is fixed on the moving plate, a plurality of proximity switches are further arranged on the induction plate, and one ends of the proximity switches are opposite to the induction plate.

28. The tray transport system of claim 27, wherein the induction plate mounting plate

And a plurality of limit bolts are also arranged on the bracket.

29. The tray transport system of claim 26, wherein the second pulleys are teeth

The inner side of the second conveyor belt is provided with teeth, the second conveyor belt with teeth can be meshed with tooth grooves on the second belt wheel, and the moving plate is installed on the second guide rail through a sliding block fixed below the moving plate.

30. The tray transport system of claim 25, wherein the second sensing unit

The method comprises the following steps: the third photoelectric sensor and the fourth photoelectric sensor are used for detecting the second induction sheet, and the third photoelectric sensor and the fourth photoelectric sensor are groove type photoelectric sensors.

31. The tray transport system of claim 30, wherein the third photo-sensor is configured to sense light from the light source

The device and the fourth photoelectric sensor are fixed on the second frame, and the second induction sheet is fixed on the moving plate and can move back and forth along with the moving plate.

32. The tray transport system of any of claims 25-31, wherein the second one of the second plurality of trays

The frame is also provided with a second drag chain, and the moving end of the second drag chain is fixed on the moving plate through a second drag chain connecting piece and can move back and forth along with the moving plate.