An assembly tooling and method for large telescopic gantry

Abstract

The present invention discloses a large telescopic gantry type assembly tooling and method, belonging to the technical field of automatic assembly. This assembly tooling includes a first assembly mechanism and a second assembly mechanism arranged oppositely. The first assembly mechanism adjusts and fixes the assembly height of the outer gantry placed flat thereon, and the second assembly mechanism adjusts the assembly height of the inner gantry placed flat thereon, pushes the inner gantry to move towards the outer gantry, and assembles the inner gantry with the outer gantry. The assembly tooling of the present invention can automatically match with the parts to be assembled according to the model of the assembly parts, is applicable to the automatic assembly of multiple types of gantries, and the entire assembly process can be completed by only one person, improving the assembly quality and assembly efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of automated assembly and provides an assembly tool and method for large telescopic door frames. Background Art

[0002] Under the background of "Made in China 2025", many engineering machinery enterprises have transformed and upgraded in accordance with the implementation standards of intelligent manufacturing and the positioning requirements of lighthouse factories, aiming to reduce the number of people in the production process and improve the productivity and per capita output value of personnel. Stackers are widely used in the handling of containers in major ports due to their simple structure, flexible control, and good micro-motion. Its tooling device is referred to as the gantry assembly. The gantry assembly is mainly divided into an inner gantry and an outer gantry. The inner and outer gantry are embedded structures, and the inner and outer gantry are driven by the cylinder to telescope each other. The dimensions of the conventional inner and outer gantry are about 11m*2m (length x width), the weight of a single part of the inner and outer gantry is about 4 tons, and the assembly gap is 2~4mm. However, due to the large dimensions of the workpiece and the high assembly precision, the current assembly method is to manually operate two special cranes to cooperate with each other to lift the inner and outer gantry. The assembly time is long, the difficulty is high, the quality is uncontrollable, and in the assembly process of the double-machine collaborative lifting, it is inevitable that there will be collisions between parts, resulting in damage to some of its parts. In addition, more than 4 people are required in the assembly process, and the assembly efficiency is completely determined by the assembly proficiency of the operator, which is in sharp contrast to intelligent manufacturing. Therefore, it is necessary to design an automatic assembly tool suitable for forklift gantry. Summary of the invention

[0003] In view of this, the object of the present invention is to provide a large telescopic gantry assembly tool and method to solve the problems of multiple personnel participation, scattered workstations, high labor intensity, low efficiency and poor safety during the assembly process of forklift gantry assembly tool.

[0004] To achieve the above object, the present invention provides the following technical solutions.

[0005] The present invention provides an assembly tool for large telescopic door frames, comprising a first assembly mechanism and a second assembly mechanism arranged relatively to each other, wherein the first assembly mechanism adjusts and fixes the assembly height of an outer door frame placed flat thereon, and the second assembly mechanism adjusts the assembly height of an inner door frame placed flat thereon, pushes the inner door frame toward the outer door frame, and assembles the inner door frame and the outer door frame together.

[0006] Furthermore, the first assembly structure is composed of a guide rail, a lifting device, a driving device, and a clamping device. The lifting devices are provided in at least two, each of which moves on the guide rail through a driving device, and a clamping device is provided on the guide rail and on both sides of the outer door frame.

[0007] Furthermore, the guide rail is of a double-rail structure, and a lifting device is arranged on each rail.

[0008] Furthermore, the synchronous movement of two lifting devices arranged side by side in the width direction of the outer gantry is controlled by a synchronous valve. The two lifting devices act together on a pallet for supporting the outer gantry, and the clamping devices are arranged on both sides of the pallet.

[0009] Furthermore, the power sources of the lifting device and the clamping device are hydraulic pressure or pneumatic pressure.

[0010] Furthermore, the second assembly mechanism is composed of a bracket, a roller path group, a pushing device, and a pinch roller device. The bracket is provided with a roller path group for supporting the inner gantry, a pushing device for pushing the inner gantry to move relative to the bracket, and a pinch roller device for guiding the inner gantry during movement.

[0011] Furthermore, the second assembly mechanism further includes a height adjustment device arranged between the first assembly mechanism and the bracket. The height adjustment device is also provided with a roller path group and a pinch roller device.

[0012] Furthermore, the height adjustment device is of a scissor lift structure.

[0013] The present invention also provides a method for assembling a large telescopic gantry. Using the above-mentioned assembly tooling, the assembly method includes: first, using an AGV to place the outer gantry on the first assembly mechanism, and the first assembly mechanism adjusts and fixes the assembly height of the outer gantry placed flat thereon; then using an AGV to place the inner gantry on the second assembly mechanism, and the second assembly mechanism adjusts the assembly height of the inner gantry placed flat thereon and pushes the inner gantry to move towards the outer gantry and assembles the inner gantry and the outer gantry together; then using an AGV to transfer the outer gantry with the assembled inner gantry out.

[0014] Preferably, the feeding or discharging direction for controlling the AGV to feed the outer gantry into or out of the first assembly mechanism is perpendicular to the length direction of the outer gantry; the feeding direction for controlling the AGV to feed the inner gantry into the second assembly mechanism is consistent with the length direction of the inner gantry.

[0015] The beneficial effects of the present invention are:

[0016] 1. The assembly tooling of the present invention can automatically match with the parts to be assembled according to the model of the assembly parts, and the entire assembly process can be completed by only one person, improving the assembly quality and assembly efficiency.

[0017] 2. The assembly tooling of the present invention replaces the traditional gantry assembly method, that is, the assembly method of collaborative hoisting by two overhead cranes, improving the production efficiency and safety.

[0018] 3. The assembly tooling of the present invention can be adapted to the assembly of various types of telescopic gantry and has a certain degree of flexibility.

[0019] 4. The assembly tooling of the present invention can be automatically docked with the AGV and seamlessly connected to the painted workpieces, reducing secondary lifting, improving the assembly efficiency and saving the assembly cost.

[0020] Other advantages, objectives and features of the present invention will be described to some extent in the subsequent specification, and to some extent, will be obvious to those skilled in the art based on the study of the following text, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the following specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in detail preferably with reference to the accompanying drawings, where:

[0022] Figure 1 is the elevation structure diagram of the assembly tooling of the present invention.

[0023] Figure 2 is the plan structure diagram of the assembly tooling of the present invention.

[0024] Reference numerals: guide rail 1, lifting device 2, driving device 3, clamping device 4, outer gantry 5, height adjustment device 6, inner gantry 7, clamping and feeding device 8, pushing device 9, roller path group 10, bracket 11. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The present invention will be further described below in conjunction with the specific embodiments. Among them, the accompanying drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and should not be construed as a limitation to this patent; in order to better illustrate the embodiments of the present invention, some components in the accompanying drawings will be omitted, enlarged or reduced, and do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted.

[0026] Such as Figure 1-2As shown in the figure, the assembly tooling for large telescopic gantry type includes a first assembly mechanism and a second assembly mechanism arranged opposite to each other. The first assembly mechanism is used to adjust and fix the assembly height of the outer gantry 5 placed flat on it, and is composed of a guide rail 1, a lifting device 2, a driving device 3, and a clamping device 4. Two lifting devices 2 are provided, and each travels on the guide rail 1 through a driving device 3. A clamping device 4 is provided on each side of the outer gantry 5. Among them, the driving device, the lifting device, and the clamping device can all adopt existing conventional technologies, as long as the lifting device can travel on the track through the driving device and the clamping device can clamp and fix the outer gantry. For example, the lifting device can adopt a hydraulic cylinder, a pneumatic cylinder, or an electro-hydraulic push rod, etc.; the driving device can adopt a driving motor with rollers; the clamping device can adopt hydraulic clamping, pneumatic clamping, or mechanical clamping. The second assembly mechanism is used to adjust the assembly height of the inner gantry 7 placed flat on it, push the inner gantry towards the outer gantry, and assemble the inner gantry with the outer gantry. It is composed of a bracket 11, a roller table group 10, a pushing device 9, and a pinch feeding device 8. The bracket 11 is provided with a roller table group 10 for supporting the inner gantry 7, a pushing device 9 for pushing the inner gantry 7 to move relative to the bracket 11, and a pinch feeding device 8 for guiding the inner gantry 7 during movement. Among them, the roller table group, the pushing device, and the pinch feeding device all adopt existing conventional technologies, as long as the inner gantry can be pushed and pinch fed relative to the bracket. For example, the roller table group can adopt multiple rollers arranged side by side; the pinch feeding device can adopt a roller that can rotate and adjust the pressure against the inner gantry; the pushing device can adopt clamping plates clamped on both sides of the inner gantry and driving components such as threaded rods, chains, or belts that pull the clamping plates to slide relative to the bracket. With the above scheme, this assembly tooling can be applicable to the assembly of various types of telescopic gantries and has a certain degree of flexibility. The outer gantry is automatically transported to the working position of the first assembly mechanism by an AGV, and the height and spacing are adjusted according to the specifications and models of the outer gantry to adapt to the workpiece, and the servo system drives the first assembly mechanism to automatically adjust the support position and assembly height. The inner gantry is automatically docked with the second assembly mechanism through the roller table and the AGV to transport the inner gantry to the table surface of the roller table group of the second assembly mechanism, realizing the automatic docking of the AGV with this assembly tooling and reducing secondary hoisting. In addition, the clamping force and stroke of the clamping device, and the pushing force and pushing stroke of the pushing device can be automatically adapted according to the specifications and models of the incoming workpieces.

[0027] In this embodiment, the guide rail 1 has a double-rail structure, and a lifting device 2 is provided on each rail. Through the double-rail design, the flat horizontal position accuracy of the outer gantry is high, and the lifting device moves more smoothly up and down. The driving device drives the lifting device to move horizontally stably and reliably. At the same time, the synchronous action of the two lifting devices 2 arranged side by side in the width direction of the outer gantry 5 can be controlled by a synchronous valve (not shown), which can ensure the synchronous movement of the two lifting devices to ensure the stable movement of the outer gantry. The two lifting devices 2 act together on a pallet (not marked) for supporting the outer gantry 5. Through the pallet, the outer gantry can be better supported, and clamping devices 4 can be more conveniently installed on both sides of the pallet.

[0028] The second assembly mechanism in this embodiment further includes a height adjustment device 6 provided between the first assembly mechanism and the bracket 11. The attitude of the inner gantry can be finely adjusted through the height adjustment device. The height adjustment device is also provided with a roller path group 10 and a clamping device 8, and the height adjustment device adopts a scissor lift structure.

[0029] The assembly method using the above assembly tooling in this embodiment includes: first, use an AGV to place the outer gantry on the first assembly mechanism, and the first assembly mechanism adjusts and fixes the assembly height of the outer gantry placed flat on it; then use the AGV to place the inner gantry on the second assembly mechanism, and the second assembly mechanism adjusts the assembly height of the inner gantry placed flat on it and pushes the inner gantry to move towards the outer gantry and assemble the inner gantry and the outer gantry together; then use the AGV to transfer the outer gantry with the assembled inner gantry out. And the feeding or discharging direction for controlling the AGV to feed or discharge the outer gantry into or out of the first assembly mechanism is perpendicular to the length direction of the outer gantry; the feeding direction for controlling the AGV to feed the inner gantry into the second assembly mechanism is consistent with the length direction of the inner gantry.

[0030] The following details the specific operation process of the assembly method using this assembly tooling.

[0031] 1). The large AGV laterally transports the outer gantry to the working area of the first assembly mechanism, that is, the feeding direction for controlling the AGV to feed the outer gantry into the first assembly mechanism is perpendicular to the length direction of the outer gantry.

[0032] 2). The driving device and the lifting device of the first assembly mechanism automatically adjust their support spacing and table height according to the specifications of the workpiece.

[0033] 3). The lifting device of the first assembly mechanism jacks up the outer gantry to separate it from the AGV, the AGV drives out of the assembly area, and then the lifting device lowers the outer gantry to the assembly height, and performs centering and clamping operations on the outer gantry workpiece.

[0034] 4) The AGV transports the inner gantry to the working area of the second assembly mechanism for docking, conveys the inner gantry to the tabletop of the second assembly mechanism; and controls the AGV to send the inner gantry into the second assembly mechanism with the feeding direction consistent with the length direction of the inner gantry.

[0035] 5) The centering positioning and clamping operation of the inner gantry workpiece is carried out through the clamping device on the inner gantry.

[0036] 6) According to the system control, the pushing device pushes the whole inner gantry into the outer gantry. During the pushing process, the attitude of the inner gantry can be finely adjusted through the height adjustment device. At the same time, the pushing device is equipped with a torque sensor, and when the set value is exceeded, the whole system will automatically alarm and give feedback.

[0037] 7) After the assembly is completed, the AGV car enters the inside of the outer gantry device. The lifting device places the assembled gantry device on the AGV car and disengages from the gantry device. Finally, the AGV car transports the assembled gantry device to the general assembly area.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the present technical solution, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A kind of assembly tooling for large telescopic gantry, characterized in that It includes a first assembly mechanism and a second assembly mechanism which are arranged relatively. The first assembly mechanism adjusts and fixes the assembly height of the outer gantry (5) placed flat on it by an AGV, and the second assembly mechanism adjusts the assembly height of the inner gantry (7) placed flat on it by an AGV, pushes the inner gantry to move towards the outer gantry, and assembles the inner gantry with the outer gantry. The first assembly structure consists of a guide rail (1), a lifting device (2), a driving device (3), and a clamping device (4). At least two lifting devices are provided, and each walks on the guide rail through a driving device. A clamping device is provided on both sides of the outer gantry above it. The second assembly mechanism consists of a bracket (11), a roller path group (10), a pushing device (9), and a pinch feeding device (8). The bracket is provided with a roller path group for supporting the inner gantry, a pushing device for pushing the inner gantry to move relative to the bracket, and a pinch feeding device for guiding the inner gantry during movement. The second assembly mechanism also includes a height adjustment device (6) provided between the first assembly mechanism and the bracket. The pushing device has a torque sensor, and when the set value is exceeded, the entire system automatically alarms and gives feedback.

2. The assembly tooling for large telescopic gantry type according to claim 1, characterized in that The guide rail is a double-track structure, and a lifting device is provided on each track.

3. The assembly tooling for large telescopic gantry type according to claim 2, characterized in that, The synchronous action of two lifting devices arranged side by side in the width direction of the outer gantry is controlled by a synchronous valve. The two lifting devices act together on a pallet for supporting the outer gantry, and the clamping devices are provided on both sides of the pallet.

4. The assembly tooling for large telescopic gantry type according to claim 3, characterized in that, The power sources of the lifting device and the clamping device are hydraulic pressure or air pressure.

5. The assembly tooling for large telescopic gantry type according to claim 1, characterized in that The height adjustment device is also provided with a roller path group and a pinch feeding device.

6. The assembly tooling for large telescopic gantry type according to claim 5, characterized in that, The height adjustment device is a scissor lift structure.

7. A method for assembling large telescopic gantry classes, characterized in that Using the assembly tooling according to any one of claims 1-6, the assembly method includes: first, use an AGV to place the outer gantry on the first assembly mechanism, and the first assembly mechanism adjusts and fixes the assembly height of the outer gantry placed flat on it; then use an AGV to place the inner gantry on the second assembly mechanism, and the second assembly mechanism adjusts the assembly height of the inner gantry placed flat on it, pushes the inner gantry to move towards the outer gantry, and assembles the inner gantry with the outer gantry; then use an AGV to transfer the outer gantry with the assembled inner gantry out.

8. The assembly method according to claim 7, characterized in that, Control the AGV to send the outer gantry into or out of the first assembly mechanism, and the sending-in or sending-out direction is perpendicular to the length direction of the outer gantry; control the AGV to send the inner gantry into the second assembly mechanism, and the sending-in direction is consistent with the length direction of the inner gantry.

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