A cantilever top cover conveying trolley system

Abstract

The invention relates to a cantilever top cover conveying trolley system, comprising a bracket, two sliding tracks are arranged in parallel on the side wall of the cross beam along the length direction of the cross beam, a power pulley is installed on the sliding track, a control cabinet is installed on the power pulley, a movable cantilever is installed on the power pulley, the outer end of the movable cantilever is connected to a cantilever cross beam, a pneumatic hoist is installed in the middle of the cantilever cross beam, a trolley hoist is arranged directly below the cantilever cross beam, guide light axes are respectively installed on both sides of the trolley hoist, and a plurality of vacuum suction cups are installed at the bottom of the trolley hoist; a top position anti-falling mechanism is also installed at the bottom of the cantilever cross beam, a workpiece in place detection mechanism is also installed at the bottom of the trolley hoist, and workpiece anti-falling mechanisms are respectively installed at the four corners of the trolley hoist; the overall structural design of the system is novel, the occupation area is small, the single-side opening, the taking and placing of parts and maintenance are more convenient, and the running speed can be greatly improved, further meeting the process use requirements of fast beat (50JPH).

Description

Technical Field

[0001] The invention relates to the technical field of automated mechanical equipment, in particular to a cantilever top cover conveying trolley system. Background Art

[0002] At present, many automobile assembly production lines use automated electrified equipment for assembly and production. This type of production line has very high requirements for the design and precision of the equipment, and naturally its design and operation costs are also quite high, which is contrary to the goal of many companies to reduce energy consumption and improve efficiency. At the same time, the structure of today's automated electrified production lines is quite complex, and repair and maintenance are very inconvenient. The flexibility and adaptability of their adjustments are not strong. Once different workpieces need to be assembled, the production line needs to make major adjustments, which is not conducive to cost control and improving production efficiency. Summary of the invention

[0003] The purpose of the present invention is to provide a cantilever top cover conveying trolley system in view of the above situation. The system has a novel overall structural design, a small footprint, single-sided opening, and is more convenient for taking and placing parts and maintenance. At the same time, its operating speed can be greatly improved to further meet the process requirements of fast beat (50JPH).

[0004] The specific scheme of the present invention is: a cantilever top cover conveying trolley system, including a bracket composed of a column and a crossbeam, two sliding rails are arranged in parallel on the side wall of the crossbeam along the length direction of the crossbeam, a power pulley is installed on the sliding rail, the power pulley moves on the sliding rail, and a control cabinet is installed on the power pulley, and a movable cantilever is installed on the power pulley, and a cantilever crossbeam is connected to the outer end of the movable cantilever, and a pneumatic hoist is installed in the middle part of the cantilever crossbeam, and guide holes are provided at both ends of the cantilever crossbeam, and a trolley hoist is provided directly below the cantilever crossbeam, and the center of the trolley hoist is hoisted and connected with the steel wire rope on the pneumatic hoist, and guide optical axes are respectively installed on both sides of the trolley hoist, and the two guide optical axes pass through the corresponding guide holes for guidance, and a plurality of vacuum suction cups are installed at the bottom of the trolley hoist; a top position anti-falling mechanism is also installed at the bottom of the cantilever crossbeam, and a workpiece in place detection mechanism is also installed at the bottom of the trolley hoist, and workpiece anti-falling mechanisms are respectively installed at the four corners of the trolley hoist.

[0005] Further, in the present invention, the top anti-falling mechanism includes a rising striker, a top collision switch, a top hanging loop, a top locking cylinder, and a top locking hook. The rising striker and the top hanging loop are arranged on the trolley spreader, and the top collision switch is arranged at the bottom of the cantilever beam and is in collision trigger cooperation with the rising striker. The top locking cylinder and the top locking hook are both hinged to the bottom of the cantilever beam, and the top locking hook rotates under the drive of the top locking cylinder to hook or open the top hanging loop. The touch signal generated by the top collision switch is processed by the controller in the control cabinet and an action instruction is sent to the top locking cylinder.

[0006] Further, in the present invention, the workpiece in-place detection mechanism includes a workpiece antenna and a workpiece induction switch, and the workpiece induction switch transmits the signal of touching the workpiece to the controller in the control cabinet.

[0007] Further, in the present invention, the workpiece anti-falling mechanism includes four workpiece anti-falling cylinders and four workpiece hooks arranged at the four corners of the trolley spreader. Each workpiece hook is hinged to the side wall of the trolley spreader and rotates under the drive of the corresponding workpiece anti-falling cylinder to hook the workpiece.

[0008] Further, in the present invention, the trolley spreader is a "field"-shaped frame structure assembled by cross bars and longitudinal bars.

[0009] Further, in the present invention, the power trolley includes a slider mounting plate, a slider, a straight rack, a traveling motor, and a traveling gear. The straight rack is installed on the beam, the slider is arranged on the slider mounting plate, the slider is sleeved on the corresponding sliding track and moves along it, the traveling motor is arranged on the slider mounting plate and is in transmission connection with the traveling gear, and the traveling gear is meshed with the corresponding straight rack. The control cabinet is arranged on the slider mounting plate.

[0010] Further, in the present invention, a set of rising buffer springs is provided corresponding to each guiding optical axis. The rising buffer springs are sleeved on the corresponding guiding optical axes and are between the trolley spreader and the cantilever beam, and the bottom of the rising buffer springs is fixed on the trolley spreader.

[0011] Further, in the present invention, a limiting plate is provided at the top end of each guiding optical axis, and a descending buffer spring is also sleeved on each guiding optical axis. The descending buffer spring is arranged between the limiting plate and the cantilever beam.

[0012] Further, in the present invention, a light curtain detection sensor is also provided on the side wall of the movable cantilever.

[0013] The equipment of the present invention has four major functions: lifting, transportation, space storage and intelligent management. The track on which the trolley runs adopts a sliding track operation form, and the drive can choose a variety of power such as a variable frequency motor or a servo motor. The operation adopts a high-precision reciprocating form of a gear rack, and the lifting adopts a pneumatic hoist. The trolley hoist uses a vacuum system to pick up parts, and the air and power supply adopts a high-flexible drag chain. The entire trolley has a simple structure, occupies a small area, is open on one side, and is easy to pick up and place parts and maintain. At the same time, its operating speed can be greatly improved, further meeting the process use requirements of fast beats (50JPH).

[0014] The equipment of the present invention is mainly used for the top cover assembly production line of the automobile welding workshop. It can be set parallel or vertically with the main welding line. It is also suitable for automatic transportation and storage transportation in the home appliance, light textile, chemical and other departments. It is an ideal automatic transportation equipment for improving the working environment, reducing labor intensity and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 yes Figure 1 A magnified schematic diagram of the structure at K in the middle;

[0017] Figure 3 It is a schematic diagram of the main viewing direction structure of the present invention;

[0018] Figure 4 It is a schematic diagram of the structure of the present invention in a top view;

[0019] Figure 5 It is a schematic diagram of the structure of the present invention in a side view direction.

[0020] In the figure: 1-column, 2-sliding track, 3-spur rack, 4-control cabinet, 5-guide light axis, 6-slider mounting plate, 7-slider, 8-workpiece material frame, 9-material frame guide frame, 10-floor, 11-workpiece anti-drop cylinder, 12-cross bar, 13-rising buffer spring, 14-falling buffer spring, 15-cantilever beam, 16-rising impact rod, 17-top position hanging ring, 18-top position locking hook, 19-workpiece induction switch, 20-workpiece feeler, 21-vacuum suction cup, 22-workpiece hook, 23-top position collision switch, 24-longitudinal rod, 25-limiting plate, 26-top position locking cylinder, 27-pneumatic hoist, 28-movable cantilever, 29-travel motor, 30-light curtain detection sensor, 31-cross beam. DETAILED DESCRIPTION

[0021] The following will be combined with the accompanying drawings of the present invention to clearly and completely describe the technical solution of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the protection scope of the present invention.

[0022] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed or operate in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0023] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] See also Figure 1-Figure 5 The present invention is a cantilever top cover conveying trolley system, comprising a bracket composed of a column 1 and a crossbeam 21, two sliding rails 2 are arranged in parallel on the side wall of the crossbeam along the length direction of the crossbeam, a power pulley is installed on the sliding rail, the power pulley moves on the sliding rail, a control cabinet 4 is installed on the power pulley, a movable cantilever 28 is installed on the power pulley, a cantilever crossbeam 15 is connected to the outer end of the movable cantilever, a pneumatic hoist 27 is installed in the middle of the cantilever crossbeam, and the cantilever crossbeam is provided with a pneumatic hoist 27. Guide holes are provided at both ends, and a trolley hoist is provided directly below the cantilever beam. The center of the trolley hoist is hoisted and connected to the wire rope on the pneumatic hoist. Guide light axes 5 are respectively provided on both sides of the trolley hoist, and the two guide light axes pass through the corresponding guide holes for guidance. A plurality of vacuum suction cups 21 are provided at the bottom of the trolley hoist; a top position anti-falling mechanism is also provided at the bottom of the cantilever beam, a workpiece in place detection mechanism is also provided at the bottom of the trolley hoist, and workpiece anti-falling mechanisms are respectively provided at the four corners of the trolley hoist.

[0025] Further, in this embodiment, the top-position anti-falling mechanism includes a rising impact rod 16, a top-position collision switch 23, a top-position hanging ring 17, a top-position locking cylinder 26, and a top-position locking hook 18. The rising impact rod and the top-position hanging ring are arranged on the trolley lifting device, and the top-position collision switch is arranged at the bottom of the cantilever beam and is in collision-triggering cooperation with the rising impact rod. The top-position locking cylinder and the top-position locking hook are both hinged to the bottom of the cantilever beam. The top-position locking hook rotates under the drive of the top-position locking cylinder to hook or open the top-position hanging ring. The touch signal generated by the top-position collision switch is processed by the controller in the control cabinet and an action instruction is sent to the top-position locking cylinder.

[0026] Further, in this embodiment, the workpiece in-place detection mechanism includes a workpiece antenna 20 and a workpiece induction switch 19. The workpiece induction switch transmits the signal of touching the workpiece to the controller in the control cabinet.

[0027] Further, in this embodiment, the workpiece anti-falling mechanism includes four workpiece anti-falling cylinders 11 and four workpiece hooks 22 arranged at the four corners of the trolley lifting device. Each workpiece hook is hinged to the side wall of the trolley lifting device and rotates under the drive of the corresponding workpiece anti-falling cylinder to hook the workpiece.

[0028] Further, in this embodiment, the trolley lifting device is a "field"-shaped frame structure assembled by a cross bar 12 and a longitudinal bar 24.

[0029] Further, in this embodiment, the power trolley includes a slider mounting plate 6, a slider 7, a straight rack 3, a traveling motor 29, and a traveling gear. The straight rack is installed on the beam, the slider is arranged on the slider mounting plate, the slider is sleeved on the corresponding sliding track and moves along it. The traveling motor is arranged on the slider mounting plate and is传动连接 with the traveling gear. The traveling gear is meshed with the corresponding straight rack. The control cabinet is arranged on the slider mounting plate.

[0030] Further, in this embodiment, a set of rising buffer springs 13 is provided corresponding to each guiding optical axis. The rising buffer springs are sleeved on the corresponding guiding optical axes and are between the trolley lifting device and the cantilever beam. The bottom of the rising buffer springs is fixed on the trolley lifting device.

[0031] Further, in this embodiment, a limiting plate 25 is provided at the top end of each guiding optical axis, and a descending buffer spring 14 is also sleeved on each guiding optical axis. The descending buffer spring is arranged between the limiting plate and the cantilever beam.

[0032] Further, in this embodiment, a light curtain detection sensor 30 is also provided on the side wall of the movable cantilever. The light curtain detection sensor is mainly used to ensure safety and detect whether there are obstacles around the movable cantilever affecting safe operation.

[0033] The working principle of the equipment of the present invention is carried out as follows:

[0034] The workpiece is placed on the workpiece material frame and transferred to the material frame guide frame. At this time, the control cabinet controls the power pulley to run above the workpiece, and the pneumatic hoist is activated to lower the trolley hoist as a whole to the appropriate position. The workpiece feeler touches the workpiece (the workpiece sensing switch detects a signal) and stops. The vacuum suction cup starts to suck up the workpiece, and the pneumatic hoist starts to drive the workpiece to rise. When the rising impact rod and the top position collision switch detect that it has reached the top position, it stops. The top position locking cylinder is activated to hang the top position locking hook into the top position hanging ring (the top position locking here can also lock the trolley hoist when there is no workpiece). At the same time, the workpiece anti-drop mechanism is activated to push the workpiece hook to rotate to hook the workpiece around to prevent the workpiece from falling and causing safety accidents. After the above actions are completed, the power pulley moves to other workstations.

[0035] A plurality of movable cantilever devices can be installed on the sliding track of the present invention for operation.

[0036] The top cover conveying trolley of the present invention adopts a movable cantilever form, so that one side is completely open to cooperate with the robot to pick up and place the workpiece. The power pulley bearing rail (sliding rail) is equipped with imported double-row linear slide rails and sliders to ensure the precise operation of the trolley and a long service life.

[0037] The top cover conveying trolley of the present invention is driven by a Panasonic A5 servo motor and is operated by a gear rack transmission method. The connection error between the racks is less than 0.2mm, ensuring the parking positioning accuracy of the trolley is ±0.5mm.

[0038] The lifting system of the cover conveying trolley of the present invention adopts the IR series pneumatic hoist, which has a brake system inside, and will not fall rapidly when the air is suddenly cut off. The lifting guide system (guide optical axis) adopts a double-row 50 diameter hollow shaft with a linear bearing to ensure smooth operation, low resistance, strong guide rigidity, and weight reduction when lifting over a long distance. A top position anti-fall mechanism is set at the upper limit position to ensure position protection when not in operation for a long time.

[0039] Due to the flat surface of the workpiece and the limitation of the process, the trolley hoist adopts a multi-way vacuum system with a vacuum suction cup to grasp the workpiece, thereby improving the stability of the workpiece and the compatibility of the vehicle model. In addition, the trolley hoist is provided with a workpiece anti-drop mechanism to ensure the protection of the workpiece from falling when the air is accidentally cut off.

[0040] The control system of the present invention can be divided into maintenance, manual and automatic control modes. The electrical control system adopts upper ABBPLC logic control, which is linked with the bus. The downstream adopts the Panasonic A5 series secondary development servo system. The stroke is set through the USB machine adjustment software. The terminal control is simple, practical, safe and reliable, and convenient for customers to use. The PK relay module is used to reduce wiring and has a beautiful appearance. The operation is equipped with a button box and terminal control, which can meet the walking requirements of 7 positions within the stroke.

[0041] The pneumatic control system uses a two-piece filtering and decompression system to supply air. For the sake of maintenance safety, a safety pressure relief valve is used to immediately discharge excess compressed air in the air circuit during maintenance and lock it. A multi-channel vacuum generator is used to provide vacuum for multiple suction cup groups to meet the requirements of vehicle model switching and grouping. A three-position five-way center-sealed valve is used to control the lifting of the pneumatic hoist, and a two-position five-way valve is used to control the action of the anti-fall cylinder.

[0042] The equipment of the present invention has four major functions: lifting, transportation, space storage and intelligent management. The track on which the trolley runs adopts a sliding track operation form, and the drive can choose a variety of power such as a variable frequency motor or a servo motor. The operation adopts a high-precision reciprocating form of a gear rack, and the lifting adopts a pneumatic hoist. The trolley hoist uses a vacuum system to pick up parts, and the air and power supply adopts a high-flexible drag chain. The entire trolley has a simple structure, occupies a small area, is open on one side, and is easy to pick up and place parts and maintain. At the same time, its operating speed can be greatly improved, further meeting the process use requirements of fast beats (50JPH).

[0043] The equipment of the present invention is mainly used for the top cover assembly production line of the automobile welding workshop. It can be set parallel or vertically with the main welding line. It is also suitable for automatic transportation and storage transportation in the home appliance, light textile, chemical and other departments. It is an ideal automatic transportation equipment for improving the working environment, reducing labor intensity and improving work efficiency.

Claims

1. A cantilever top cover conveying trolley system, comprising a bracket consisting of a column and a crossbeam, two sliding rails are arranged in parallel on the side wall of the crossbeam along the length direction of the crossbeam, a power pulley is installed on the sliding rail, the power pulley moves on the sliding rail, and a control cabinet is installed on the power pulley, characterized in that: An active cantilever is installed on the power block. A cantilever cross beam is connected to the outer end of the active cantilever. A pneumatic hoist is installed in the middle of the cantilever cross beam. Guide holes are provided at both ends of the cantilever cross beam. A trolley sling is provided directly below the cantilever cross beam. The center of the trolley sling is connected to the wire rope of the pneumatic hoist for hoisting. Guide optical axes are respectively installed on both sides of the trolley sling. The two guide optical axes respectively pass through the corresponding guide holes for guiding. A number of vacuum suckers are installed at the bottom of the trolley sling; A top-position anti-falling mechanism is also installed at the bottom of the cantilever cross beam. A workpiece in-place detection mechanism is also installed at the bottom of the trolley sling. Workpiece anti-falling mechanisms are respectively installed at the four corners of the trolley sling; The top-position anti-falling mechanism includes a rising impact rod, a top-position collision switch, a top-position hanging ring, a top-position locking cylinder and a top-position locking hook. Among them, the rising impact rod and the top-position hanging ring are arranged on the trolley sling. The top-position collision switch is arranged at the bottom of the cantilever cross beam and is in collision trigger cooperation with the rising impact rod; The top-position locking cylinder and the top-position locking hook are both hinged to the bottom of the cantilever cross beam. The top-position locking hook rotates under the drive of the top-position locking cylinder to realize hooking or opening with the top-position hanging ring; The touch signal generated by the top-position collision switch is processed by the controller in the control cabinet and an action instruction is sent to the top-position locking cylinder; The workpiece in-place detection mechanism includes a workpiece antenna and a workpiece induction switch. The workpiece induction switch transmits the signal of touching the workpiece to the controller in the control cabinet; The workpiece anti-falling mechanism includes four workpiece anti-falling cylinders and four workpiece hooks arranged at the four corners of the trolley sling. Each workpiece hook is hinged on the side wall of the trolley sling and rotates under the drive of the corresponding workpiece anti-falling cylinder to hook the workpiece; A set of rising buffer springs is provided corresponding to each guide optical axis. The rising buffer springs are sleeved on the corresponding guide optical axes and are between the trolley sling and the cantilever cross beam. The bottom of the rising buffer springs is fixed on the trolley sling; A limiting plate is provided at the top end of each guide optical axis. A descending buffer spring is also sleeved on each guide optical axis. The descending buffer spring is arranged between the limiting plate and the cantilever cross beam.

2. The cantilever top cover conveying trolley system according to claim 1, characterized in that: The trolley sling is a "field"-shaped frame structure assembled by cross bars and longitudinal bars.

3. The cantilever top cover conveying trolley system according to claim 1, characterized in that: The power block includes a slider mounting plate, a slider, a straight rack, a traveling motor and a traveling gear. Among them, the straight rack is installed on the cross beam. The slider is arranged on the slider mounting plate. The slider is sleeved on the corresponding sliding track and moves along it. The traveling motor is arranged on the slider mounting plate and is in transmission connection with the traveling gear. The traveling gear is meshed with the corresponding straight rack; The control cabinet is arranged on the slider mounting plate.

4. The cantilever top cover conveying trolley system according to claim 1, characterized in that: A light curtain detection sensor is also provided on the side wall of the active cantilever.

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