Five-axis double-clamp automatic feeding equipment with automatic positioning function

Abstract

The utility model discloses five-axis double-clamp automatic feeding equipment with an automatic positioning function, which belongs to the technical field of continuous automatic feeding of multi-head punching machines and comprises a machine base, a gantry is mounted on the machine base, and a rear clamping platform used for clamping a printing plate to be machined to move front and back and left and right is mounted on the machine base. A front clamping platform used for clamping a printing plate to be machined to move front, back, left and right is installed on the gantry. In the utility model, an automatic positioning technology patent with an electronic detection function is used in the punching process of the high-speed punching machine, the punching precision and speed requirements of the printing plate of the high-speed punching machine are ensured, all X and Y axes adopt a linear motor driving technology, and the operation precision and the equipment maintenance work are superior to those of a common servo driving mechanism; and no transmission gap exists in the positive direction and the negative direction of the transmission mechanism, so that the mechanical reversing precision requirement of 120 times of stroke per minute or higher speed is ensured, and the practicability of the five-axis double-clamp automatic feeding equipment with the automatic positioning function is improved.

Description

Technical Field

[0001] This utility model relates to the field of continuous automated feeding technology for multi-head punch presses, and more specifically, to a five-axis double-clamp automatic feeding device with automatic positioning. Background Technology

[0002] Punch presses are essential equipment for punching various metal sheets. Early punch presses mostly used single-head die punching, which was inefficient and lacked precision. Currently, single-row die multi-head punching and double-row die multi-head punching methods are increasingly adopted by users due to their high efficiency and precision. Single-row die multi-head punching has lower die requirements, but the X and Y axis drive requirements place high demands on the corresponding electromechanical structures. The feeding fixture uses a double-clamp alternating working method, shortening the plate changeover time. However, if punching is done on printed plates with patterns, increased positioning accuracy is required before and during plate feeding. Currently, most feeding equipment uses mechanical positioning and servo motor lead screw transmission, which has poor adaptability and low punching accuracy, failing to meet the positioning requirements of high-speed, high-precision hole processing. Therefore, we propose a five-axis double-clamp automatic feeding device with automatic positioning. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of existing punching equipment, such as low efficiency and poor punching accuracy, and to provide a five-axis double-clamp automatic feeding device with built-in automatic positioning, which can perform high-speed automatic punching of patterned printing plates. It is applicable to both single-row multi-head dies and double-row multi-head dies.

[0004] To solve the above problems, the present invention adopts the following technical solution:

[0005] A five-axis double-clamp automatic feeding device with automatic positioning includes a base, a gantry mounted on the base, a rear clamping platform mounted on the base for clamping the printing plate to be processed and moving it forward, backward, left, and right, and a front clamping platform mounted on the gantry for clamping the printing plate to be processed and moving it forward, backward, left, and right. An automatic feeder is provided on the side of the base, and an aluminum frame platform is provided on the base. A sensor group is provided on the aluminum frame platform. The sensor group includes a horizontal color mark sensor, an angle color mark sensor, and a vertical color mark sensor corresponding to the horizontal line marks, angle line marks, and vertical line marks on the workpiece printing plate.

[0006] In a preferred embodiment of this utility model, the rear clamping platform includes a rear clamping Y-axis transmission mechanism mounted on the base. The rear clamping Y-axis transmission mechanism consists of a lower rear clamping platform, a linear motor, and a linear assembly. A rear clamping X-axis motion detection head is mounted on the rear clamping Y-axis transmission mechanism. A rear clamping X-axis transmission mechanism is mounted on the rear clamping Y-axis transmission mechanism. The rear clamping X-axis transmission mechanism consists of an upper rear clamping platform, a linear motor, and a linear assembly. A rear clamping mounting plate is mounted on the rear clamping X-axis transmission mechanism. A left clamp and a right clamp are mounted on the rear clamping mounting plate. Both the left and right clamps are equipped with rear clamping cylinder clamps. Each of the two rear clamping cylinder clamps includes a rear clamping nozzle, a nozzle lowering cylinder, and a clamping cylinder. An automatic positioning component is mounted on the right clamp.

[0007] As a preferred embodiment of this utility model, the front clamping platform includes a front clamping Y-axis transmission mechanism that is reverse-mounted on the gantry. The front clamping Y-axis transmission mechanism consists of an upper front clamping platform, a linear motor, and a linear assembly. Below the front clamping Y-axis transmission mechanism is a front clamping X-axis transmission mechanism, which consists of a lower front clamping platform, a linear motor, and a linear assembly. Below the front clamping X-axis transmission mechanism is a front clamping mounting platform. At the end of the front clamping mounting platform is a front clamping mounting plate. Two front clamping bodies are mounted on the front clamping mounting plate. Each of the two front clamping bodies is equipped with a front clamping jaw, a front clamping clamping cylinder, and a front clamping lifting cylinder.

[0008] As a preferred embodiment of this utility model, the sensor group is a digital color mark sensor with automatic color mark selection function and coaxial reflection optical system, and the response time is less than 50μs.

[0009] In a preferred embodiment of this utility model, the front clamping platform is located above the workpiece printing plate plane, and the rear clamping platform is located below the workpiece printing plate plane.

[0010] As a preferred embodiment of this utility model, an initial positioning baffle is provided on the aluminum frame platform.

[0011] The advantages of this utility model are:

[0012] (1) In this utility model, the automatic positioning technology patent with electronic detection function is used in the stamping process of high-speed punching machine, which ensures the punching accuracy and speed requirements of the high-speed punching plate. All X and Y axes adopt linear motor drive technology, and the running accuracy and equipment maintenance are better than the commonly used servo drive mechanism. There is no transmission gap in the forward and reverse directions of the transmission mechanism, which ensures the mechanical reversal accuracy requirements of 120 strokes / minute or higher speed, and improves the practicality of the five-axis double clamp automatic feeding equipment with automatic positioning.

[0013] (2) In this utility model, both the front clamp and the rear clamp can move forward, backward, left, and right. Specifically, the auxiliary work time for the printing plate feeding and positioning is allocated to the rear clamp. The rear clamp performs the above work while waiting for the front clamp to feed the plate, without occupying the punching time of the punch press. When the front clamp returns, the rear clamp has already taken over the feeding work. The return stroke of the front clamp does not occupy the punching time of the punch press separately. The work of the front and rear clamps exchanging clamps to hold the printing plate is arranged to be completed during the punching time of the punch press, without occupying the punching time of the punch press separately, effectively shortening the processing time. In addition, the front clamp tracks the rear clamp for quick clamping, and the rear clamp tracks the front clamp to reduce the fast travel distance, ensuring the plate changing time and clamping accuracy at high speed, minimizing the plate changing time of the punch press, and improving the working efficiency of the five-axis double clamp automatic feeding equipment with automatic positioning.

[0014] (3) This utility model can be used in both single-row multi-head punch presses and multi-row multi-head punch presses, which improves the versatility of the equipment and reduces the burden on users. The overall structure of the machine base adopts an independent gantry structure instead of resting the upper part of the machine base on the punch press bed. The upper and lower double clamp design of the independent gantry scheme is reasonable, easy to install and manufacture, has high equipment precision, and short production cycle. The upper gantry and both sides of the machine base adopt an oblique unloading design to reduce the impact of high-speed motor reversal. The whole machine runs smoothly and has high processing precision. Attached Figure Description

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the rear clamping platform of this utility model;

[0017] Figure 3 This is a schematic diagram of the front clamping platform of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the base of this utility model.

[0019] Description of the numbers in the figure:

[0020] 1. Base; 2. Rear clamping platform; 3. Gantry; 4. Front clamping platform; 5. Aluminum frame platform; 6. Sensor group; 7. Initial positioning baffle; 8. Automatic feeder; 21. Rear clamp Y-axis transmission mechanism; 22. Rear clamp X-axis motion detection head; 23. Rear clamp X-axis transmission mechanism; 24. Left clamp; 25. Rear clamp mounting plate; 26. Grip nozzle tilting cylinder; 27. Clamping cylinder; 28. Right clamp; 29. ​​Automatic positioning component; 41. Front clamp Y-axis transmission mechanism; 42. Front clamp X-axis transmission mechanism; 43. Front clamp mounting platform; 44. Front clamp mounting plate; 45. Front clamp body; 46. Front clamp tilting cylinder; 47. Front clamping cylinder; 48. Front clamp nozzle. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" 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; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Example:

[0025] Please see Figure 1-4 A five-axis double-clamp automatic feeding device with automatic positioning includes a base 1, a gantry 3 mounted on the base 1, a rear clamping platform 2 mounted on the base 1 for clamping the printing plate to be processed and moving it back and forth and left and right, a front clamping platform 4 mounted on the gantry 3 for clamping the printing plate to be processed and moving it back and forth and left and right, an automatic feeder 8 is provided on the side of the base 1, an aluminum frame platform 5 is provided on the base 1, and a sensor group 6 is provided on the aluminum frame platform 5. The sensor group 6 includes a horizontal color mark sensor, an angle color mark sensor and a vertical color mark sensor corresponding to the horizontal line mark, angle line mark and vertical line mark on the workpiece printing plate.

[0026] In this embodiment, the upper gantry 3 and the lower base 1 are designed as upper and lower modules and manufactured using machining centers, and assembled into an integral base. Since the front clamping platform 4 is installed on the gantry 3, its high-speed movement on the X and Y axes has a certain impact on the gantry 3, especially the X axis, which is subjected to repeated high-speed impacts. In order to relieve the impact of the high-speed X-axis reversal, four T-shaped stiffeners are used on both sides of the base 1 for strong support. This oblique force-relieving design greatly eliminates the vibration of the gantry 3 during operation, ensuring the stability of operation and processing accuracy. The automatic feeding machine 8 is prior art, as disclosed in the utility model patent "An Automatic Conveying Device for Plate Materials" with publication number CN206108257U.

[0027] For details, please refer to Figure 1 and Figure 2 The rear clamping platform 2 includes a rear clamping Y-axis transmission mechanism 21 mounted on the base 1. The rear clamping Y-axis transmission mechanism 21 consists of a rear clamping lower platform, a linear motor, and a linear assembly. A rear clamping X-axis motion detection head 22 is mounted on the rear clamping Y-axis transmission mechanism 21. A rear clamping X-axis transmission mechanism 23 is mounted on the rear clamping Y-axis transmission mechanism 21. The rear clamping X-axis transmission mechanism 23 consists of a rear clamping upper platform, a linear motor, and a linear assembly. A rear clamping mounting plate 25 is mounted on the rear clamping X-axis transmission mechanism 23. A left clamp 24 and a right clamp 28 are mounted on the rear clamping mounting plate 25. Both the left clamp 24 and the right clamp 28 are equipped with rear clamping cylinder clamps. Both rear clamping cylinder clamps include a rear clamping nozzle, a nozzle lowering cylinder 26, and a clamping cylinder 27. An automatic positioning component 29 is mounted on the right clamp 28.

[0028] In this embodiment, the rear clamping platform 2 has three moving axes: X, Y, and C. The C axis is a dedicated positioning axis. The automatic positioning component 29 is a small linear motor drive that drives the workpiece printing plate to rotate around the vertical C axis to achieve precise positioning of the printing plate angle. The specific technology used in this part can be found in the invention patent "Platform with Precise Detection and Positioning and its Usage Method" with publication number CN101281026A.

[0029] For details, please refer to Figure 1 and Figure 3The front clamping platform 4 includes a front clamping Y-axis transmission mechanism 41 that is hoisted in the opposite direction on the gantry 3. The front clamping Y-axis transmission mechanism 41 consists of an upper front clamping platform, a linear motor, and a linear assembly. Below the front clamping Y-axis transmission mechanism 41 is a front clamping X-axis transmission mechanism 42, which consists of a lower front clamping platform, a linear motor, and a linear assembly. Below the front clamping X-axis transmission mechanism 42 is a front clamping mounting platform 43. At the end of the front clamping mounting platform 43 is a front clamping mounting plate 44. Two front clamping bodies 45 are mounted on the front clamping mounting plate 44. Each of the two front clamping bodies 45 is equipped with a front clamping jaw 48, a front clamping clamping cylinder 47, and a front clamping lifting cylinder 46.

[0030] For details, please refer to Figure 1 Sensor group 6 is a digital color mark sensor with automatic color mark selection function and coaxial reflection optical system, with a response time of less than 50μs.

[0031] In this embodiment, sensor group 6 includes a horizontal color mark sensor, an angle color mark sensor, and a vertical color mark sensor. The detection and positioning program can move the workpiece to be detected to the ideal processing position. The installation of the sensors in sensor group 6 can be carried out in accordance with the installation position and method of the sensors in the invention patent "Platform for Precise Detection and Positioning and its Usage Method" with publication number CN101281026A.

[0032] For details, please refer to Figure 1 The front clamping platform 4 is located above the workpiece printing plate plane, and the rear clamping platform 2 is located below the workpiece printing plate plane.

[0033] For details, please refer to Figure 1 An initial positioning baffle 7 is installed on the aluminum frame platform 5.

[0034] In this embodiment, the initial positioning baffle 7 can limit the positioning endpoint when the printing plate enters the working surface from the automatic feeder 8, and initially position the printing plate to be tested in an appropriate position, so as to facilitate the accurate positioning of the sensor group 6. In addition, a flow strip device is also installed on the aluminum frame platform 5 to facilitate the movement of the printing plate and to ensure the smooth sliding of the printing plate during the conveying process.

[0035] Working principle: The structure of multi-head die for punch presses is divided into two types: single-row and double-row with multiple rows. There are two working modes for the X-axis of the corresponding printing plate: single-row die needs to move 1 hole distance in the X direction, while double-row die does not need to move in the X direction, but there may be a slight amount of compensation movement. Users can choose the corresponding mode to start working.

[0036] 1. The printing plate to be processed is lifted by the automatic feeder 8 at the rear end to the discharge section to wait for the delivery instruction. After the instruction is received, the printing plate is sent out. After the printing plate is completely slid into the aluminum frame platform 5, the push plate cylinder on the rear clamping platform 2 pushes the plate forward until the printing plate is blocked by the initial positioning baffle 7 in the middle section of the aluminum frame platform 5, and then the pushing action stops.

[0037] 2. The rear clamping nozzles on the left clamp 24 and right clamp 28, which are already at the starting position, move forward and use the clamping cylinder 27 to clamp the printing plate to automatically position the printing plate. After positioning, the rear clamping nozzles follow the front clamping nozzles 48, maintaining a safe distance from the front clamping nozzles 48, and waiting to take over the plate feeding work of the front clamping nozzles 48 after the front clamping nozzles 48 finish their work.

[0038] 3. During the entire period of processes 1 and 2 above, the front clamping jaw 48 performs the plate feeding work of the already fed printing plate in the front section of the equipment in sync with the punching of the punch. After the printing plate is fed, the front clamping jaw 48 immediately tilts up and moves back to make room for the plate feeding in front of the punch table, allowing the rear clamping jaw waiting behind it to immediately feed the plate forward at high speed in sync with the punching of the punch, replacing the work of the front clamping jaw 48 and ensuring continuous punching of the punch. The tilting of the front clamping jaw 48 is driven by the front clamping tilting cylinder 46. The reason why the front clamping jaw 48 needs to tilt up when it moves back is that the front clamping jaw 48 is above the printing plate, to avoid the lower part of the front clamping jaw 48 scratching the upper surface of the printing plate. At this time, the plate feeding work synchronized with the punching action is taken over by the rear clamping jaw.

[0039] 4. After the front clamping nozzle 48 retracts to the working starting position, the automatic feeder 8 at the rear executes step 1 described above, sending the printing plate to the aluminum frame platform 5, and performing the pushing and baffle actions.

[0040] 5. As per point 3 above, the rear clamping jaw replaces the front clamping jaw 48 in moving forward to handle the plate feeding. Simultaneously, the front clamping jaw 48 continuously tracks the movement of the rear clamping jaw. When the plate clamping line just passes the front clamping jaw 48, the front clamping jaw 48 immediately moves forward synchronously with the rear clamping jaw, simultaneously exchanging the clamping of the plate. This synchronous movement of the front and rear clamping jaws to exchange the plate clamping refers to the change from the rear clamping jaw to the front clamping jaw. This action occurs at the instant the punch head descends. The clamping movement is completed synchronously, and the clamping accuracy is kept to be no more than 0.1mm. After the clamping is changed, the front clamping jaw 48 continues to perform the feeding action synchronized with the punching machine action, while the rear clamping jaw lowers its head and moves back to the working starting point of the rear clamping jaw to prepare to position the printing plate placed at the positioning station. The lowering of the rear clamping jaw is driven by the clamping jaw lowering cylinder 26. The reason why the rear clamping jaw needs to lower its head when moving back is that the rear clamping jaw is located below the printing plate, and it is necessary to avoid the upper part of the rear clamping jaw scratching the lower surface of the printing plate.

[0041] 6. The rear clamp, which has returned to its working origin, will continue the cycle of the action described in step 2 above.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A five-axis double-clamp automatic feeding device with automatic positioning, comprising a base (1), characterized in that: A gantry (3) is installed on the machine base (1). A rear clamping platform (2) for clamping the printing plate to be processed and moving it back and forth and left and right is installed on the machine base (1). A front clamping platform (4) for clamping the printing plate to be processed and moving it back and forth and left and right is installed on the gantry (3). An automatic feeder (8) is provided on the side of the machine base (1). An aluminum frame platform (5) is provided on the machine base (1). A sensor group (6) is provided on the aluminum frame platform (5). The sensor group (6) includes a horizontal color mark sensor, an angle color mark sensor and a vertical color mark sensor corresponding to the horizontal line mark, angle line mark and vertical line mark on the workpiece printing plate.

2. The five-axis double-clamp automatic feeding device with automatic positioning according to claim 1, characterized in that: The rear clamping platform (2) includes a rear clamping Y-axis transmission mechanism (21) mounted on the base (1). The rear clamping Y-axis transmission mechanism (21) consists of a lower rear clamping platform, a linear motor, and a linear assembly. A rear clamping X-axis motion detection head (22) is mounted on the rear clamping Y-axis transmission mechanism (21). A rear clamping X-axis transmission mechanism (23) is mounted on the rear clamping Y-axis transmission mechanism (21). The rear clamping X-axis transmission mechanism (23) consists of an upper rear clamping platform, a linear motor, and a linear assembly. The rear clamp X-axis transmission mechanism (23) is provided with a rear clamp mounting plate (25), a left clamp (24) is provided on the rear clamp mounting plate (25), a right clamp (28) is provided on the rear clamp mounting plate (25), and a rear clamp cylinder clamp is provided on both the left clamp (24) and the right clamp (28). Both rear clamp cylinder clamps include a rear clamp mouth, a mouth lowering cylinder (26) and a clamp clamping cylinder (27). An automatic positioning component (29) is provided on the right clamp (28).

3. The five-axis double-clamp automatic feeding device with automatic positioning according to claim 1, characterized in that: The front clamping platform (4) includes a front clamping Y-axis transmission mechanism (41) that is reverse-mounted on the gantry (3). The front clamping Y-axis transmission mechanism (41) consists of a front clamping upper platform, a linear motor, and a linear assembly. A front clamping X-axis transmission mechanism (42) is provided below the front clamping Y-axis transmission mechanism (41). The front clamping X-axis transmission mechanism (42) consists of a front clamping lower platform, a linear motor, and a linear assembly. A front clamping mounting platform (43) is provided below the front clamping X-axis transmission mechanism (42). A front clamping mounting plate (44) is provided at the end of the front clamping mounting platform (43). Two front clamping bodies (45) are provided on the front clamping mounting plate (44). Each of the two front clamping bodies (45) is provided with a front clamping mouth (48). Each of the two front clamping bodies (45) is provided with a front clamping clamping cylinder (47). Each of the two front clamping bodies (45) is provided with a front clamping lifting cylinder (46).

4. The five-axis double-clamp automatic feeding device with automatic positioning according to claim 1, characterized in that: The sensor group (6) is a digital color mark sensor with automatic color mark selection function and coaxial reflection optical system, and the response time is less than 50 μs.

5. A five-axis double-clamp automatic feeding device with automatic positioning as described in claim 1, characterized in that: The front clamping platform (4) is located above the workpiece printing plate plane, and the rear clamping platform (2) is located below the workpiece printing plate plane.

6. The five-axis double-clamp automatic feeding device with automatic positioning according to claim 1, characterized in that: An initial positioning baffle (7) is provided on the aluminum frame platform (5).

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