A loading and unloading device for CNC machine tools

Abstract

The present invention belongs to the field of sheet metal processing technology, and in particular, is a loading and unloading device for a CNC machine tool, comprising a base, a pillar fixedly connected to the top of the base, a threaded column connected to the inner wall of the pillar by a thread, a top plate provided on the top of the threaded column, a second servo motor fixedly mounted on the bottom of the top plate, a stepper motor fixedly mounted on the top of the top plate, a main board fixedly mounted on the output end of the stepper motor, a gripping mechanism provided on the end of the main board, the gripping mechanism comprising a gripping disc, a strip chute provided on the top of the gripping disc, a guide block slidably connected to the inner wall of the strip chute. The present invention, by providing a top plate, a stepper motor, a main board and two gripping mechanisms, can perform gripping, moving and placing operations of finished products and raw materials, thereby effectively simplifying a single loading and unloading process into gripping-moving-placing, thereby effectively improving the loading and unloading efficiency of the equipment, and is very convenient for use.

Description

Technical Field

[0001] The present invention relates to the technical field of sheet metal processing, in particular to a loading and unloading device for a numerically controlled machine tool. Background Art

[0002] A CNC machine tool is an automated machine tool equipped with a program control system, which can make the machine tool move and process parts according to a pre-programmed program. CNC machine tools are often used to process sheet materials such as plates. Before processing the plates, it is necessary to complete the loading of the plates. After the plate processing is completed, it is necessary to complete the unloading of the formed plates. For example, Chinese patent publication number: CN215394043U, the utility model discloses an automatic loading and unloading device for CNC machine tools, a loading and unloading support plate is provided on one side of the CNC machine tool body, and the loading and unloading support plate is connected to the CNC machine tool body by screws, a movable seat is provided inside the CNC machine tool body, a lifting plate is provided above the movable seat, a loading plate is provided above the lifting plate, an electric telescopic rod is provided between the lifting plate and the movable seat, and the two ends of the electric telescopic rod are respectively connected to the lifting plate and the movable seat to form an integrated structure.

[0003] In the prior art, a threaded rod is often used to drive a gripping mechanism to move back and forth for loading and unloading operations of CNC machine tools. During a single loading and unloading process, the CNC machine tool needs to sequentially perform finished product grabbing, moving, finished product placement, raw material grabbing, moving, and raw material placement. The operation is relatively cumbersome, resulting in low loading and unloading efficiency. At the same time, the positioning and placement of raw materials are mostly performed manually, resulting in low equipment convenience and a heavy burden on workers. In addition, only a single suction cup mechanism is usually provided for gripping, resulting in poor loading and unloading stability and being less conducive to use. Summary of the Invention

[0004] (1) Technical problems solved

[0005] In view of the shortcomings of the existing technology, the present invention provides a loading and unloading device for CNC machine tools, which solves the problems of low loading and unloading efficiency, the need for manual positioning of raw materials and poor stability of a single grasping method.

[0006] (2) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a loading and unloading device for a CNC machine tool, comprising a base, the top of the base is fixedly connected to a pillar, the inner wall of the pillar is connected to a threaded column by a thread, a top plate is provided on the top of the threaded column, a second servo motor is fixedly installed on the bottom of the top plate, a stepper motor is fixedly installed on the top of the top plate, a main board is fixedly installed on the output end of the stepper motor, a gripping mechanism is provided on the end of the main board, the gripping mechanism comprises a gripping disc, a strip slide is provided on the top of the gripping disc, and the inner wall of the strip slide is slidably connected to The guide block has an arc-shaped slide rail on its top that is slidably connected, and a connecting plate is fixedly connected to the end of the arc-shaped slide rail, and a third servo motor is fixedly installed on the inner wall of the connecting plate, and the output end of the third servo motor is fixedly installed on the top of the grabbing disk, and the bottom of the guide block is fixedly connected to a mounting seat, and a slot is provided at the bottom of the mounting seat, and a plug-in plate is slidably connected to the inner wall of the slot, and a clamping plate is fixedly connected to the bottom of the plug-in plate, and a card slot is provided on the surface of the plug-in plate, and the card slot and the inner wall of the mounting seat are both slidably connected with a card plate, and a suction cup mechanism is fixedly installed on the bottom of the grabbing disk.

[0008] As a preferred technical solution of the present invention, a lower fixing plate is fixedly connected to the surface of the grabbing plate, an electric hydraulic cylinder is fixedly installed on the top of the lower fixing plate, and an upper fixing plate is fixedly installed on the surface of the electric hydraulic cylinder.

[0009] As a preferred technical solution of the present invention, the inner wall of the main board is rotatably connected to a bidirectional internal threaded tube through a bearing, the inner wall of the bidirectional internal threaded tube is connected to a threaded rod through a thread, one end of the threaded rod is fixedly connected to an upper fixed plate, the surface of the bidirectional internal threaded tube is fixedly connected to a second gear, a first servo motor is fixedly installed on the top of the main board, and a first gear is fixedly installed on the output end of the first servo motor.

[0010] As a preferred technical solution of the present invention, both ends of the main board are provided with a grabbing mechanism, the surface of the upper fixed plate is fixedly connected to a first guide plate, and the surface of the first guide plate is slidably connected to the main board.

[0011] As a preferred technical solution of the present invention, the bottom of the main board is fixedly connected to a slider, the top of the top plate is fixedly connected to a ring slide rail, the inner wall of the slider is slidably connected to the ring slide rail, and the bottom of the lower fixed plate is fixedly installed with an LED projection lamp.

[0012] As a preferred technical solution of the present invention, one end of the clamping plate is fixedly connected to an adapter plate, a spring is fixedly connected between the adapter plate and the mounting seat, and a chamfer is provided at the entrance of the slot.

[0013] As a preferred technical solution of the present invention, a fourth gear is fixedly connected to the upper surface of the threaded column, and a third gear is fixedly installed on the output end of the second servo motor.

[0014] As a preferred technical solution of the present invention, a controller is fixedly installed on the surface of the pillar, a second guide plate is slidably connected to the inner wall of the pillar, and the top of the second guide plate is fixedly connected to the top plate.

[0015] (3) Beneficial effects

[0016] Compared with the prior art, the present invention provides a loading and unloading device for a CNC machine tool, which has the following beneficial effects:

[0017] 1. The loading and unloading device for CNC machine tools can carry out the operations of grabbing, moving and placing finished products and raw materials by setting a top plate, a stepping motor, a main board and two grabbing mechanisms, thereby effectively simplifying the single loading and unloading process into grabbing - moving - placing, thereby effectively improving the loading and unloading efficiency of the equipment and being very convenient to use.

[0018] 2. The loading and unloading device for the CNC machine tool can synchronously drive the four guide blocks to move inward or outward by setting a strip slide, an arc slide rail and a third servo motor, and then drive the clamping plate to quickly push the raw material to the specified position, which is very convenient for use.

[0019] 3. The loading and unloading device for the CNC machine tool can initially adsorb and fix the raw materials and finished products by setting a suction cup mechanism. At the same time, it can clamp and fix the raw materials and finished products with the clamping plate. The adapter plate and the plug-in plate are provided to facilitate the user to replace the clamping plates of different shapes according to the needs, thereby effectively improving the stability of the equipment loading and unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 For the present invention Figure 1 A magnified view of the structure at center A;

[0022] Figure 3 This is a schematic diagram of the structure of the grabbing mechanism of the present invention;

[0023] Figure 4 A bottom view of the grabbing plate of the present invention;

[0024] Figure 5 This is a schematic diagram of the connection relationship between the guide block and the clamping plate of the present invention;

[0025] Figure 6 This is a bottom view of the top plate of the present invention.

[0026] Figure: 1. Base; 2. Support; 3. Threaded column; 4. Top plate; 5. Stepper motor; 6. Main plate; 7. Grabbing mechanism; 71. Grabbing plate; 721. Lower fixing plate; 722. Electric hydraulic cylinder; 723. Upper fixing plate; 731. Strip slide; 732. Guide block; 733. Arc slide rail; 734. Connecting plate; 735. Third servo motor; 74. Clamping plate; 751. LED projection lamp; 752. Suction cup mechanism; 761. Mounting seat ;762, slot;763, chamfer;771, card plate;772, adapter plate;773, spring;781, plug plate;782, card slot;8, bidirectional internal threaded tube;9, threaded rod;10, first guide plate;11, first servo motor;12, first gear;13, second gear;14, controller;15, second guide plate;16, second servo motor;17, third gear;18, fourth gear;19, slider;20, annular slide rail. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example

[0028] See also Figure 1-6 The present invention provides the following technical solutions: a loading and unloading device for a CNC machine tool, comprising a base 1, a pillar 2 is fixedly connected to the top of the base 1, a threaded column 3 is connected to the inner wall of the pillar 2 by a thread, a top plate 4 is provided on the top of the threaded column 3, a second servo motor 16 is fixedly installed on the bottom of the top plate 4, a stepping motor 5 is fixedly installed on the top of the top plate 4, a main board 6 is fixedly installed on the output end of the stepping motor 5, a grabbing mechanism 7 is provided on the end of the main board 6, the grabbing mechanism 7 comprises a grabbing plate 71, a strip-shaped slide 731 is provided on the top of the grabbing plate 71, a guide block 732 is slidably connected to the inner wall of the strip-shaped slide 731, and an arc-shaped slide is slidably connected to the top of the guide block 732. Rail 733, the end of the arc-shaped slide rail 733 is fixedly connected to a connecting plate 734, the inner wall of the connecting plate 734 is fixedly installed with a third servo motor 735, the output end of the third servo motor 735 is fixedly installed on the top of the grabbing plate 71, the bottom of the guide block 732 is fixedly connected to a mounting seat 761, a slot 762 is provided at the bottom of the mounting seat 761, and a plug-in plate 781 is slidably connected to the inner wall of the slot 762, and the bottom of the plug-in plate 781 is fixedly connected to the clamping plate 74, and a card slot 782 is provided on the surface of the plug-in plate 781, and the card slot 782 and the inner wall of the mounting seat 761 are both slidably connected with a card plate 771, and a suction cup mechanism 752 is fixedly installed at the bottom of the grabbing plate 71.

[0029] In this embodiment, by setting a top plate 4, a stepper motor 5, a main board 6 and two grasping mechanisms 7, it is possible to carry out the grasping, moving and placing operations of finished products and raw materials, thereby effectively simplifying the single loading and unloading process into grasping-moving-placing, thereby effectively improving the loading and unloading efficiency of the equipment, and setting a strip slide 731, an arc slide rail 733 and a third servo motor 735, which can synchronously drive the four guide blocks 732 to move inward or outward, and then drive the clamping plate 74 to quickly push the raw materials to the specified position, and set a suction cup mechanism 752, which can perform preliminary adsorption and fixation of raw materials and finished products, and at the same time cooperate with the clamping plate 74 to clamp and fix the raw materials and finished products, and set an adapter plate 772 and an insert plate 781, so that the user can replace the clamping plate 74 of different shapes according to needs, thereby effectively improving the stability of the equipment loading and unloading, which is very convenient for use.

[0030] Specifically, a lower fixing plate 721 is fixedly connected to the surface of the grabbing plate 71 , an electric hydraulic cylinder 722 is fixedly installed on the top of the lower fixing plate 721 , and an upper fixing plate 723 is fixedly installed on the surface of the electric hydraulic cylinder 722 .

[0031] In this embodiment, the height of the grabbing plate 71 can be adjusted through the cooperation of the lower fixed plate 721, the electric hydraulic cylinder 722 and the upper fixed plate 723, so that the two grabbing mechanisms 7 can be adapted to material conveying mechanisms such as conveyor belts of different heights, which is more convenient for use.

[0032] Specifically, the inner wall of the main board 6 is rotatably connected to a bidirectional internal threaded tube 8 through a bearing, the inner wall of the bidirectional internal threaded tube 8 is connected to a threaded rod 9 through a thread, one end of the threaded rod 9 is fixedly connected to the upper fixed plate 723, the surface of the bidirectional internal threaded tube 8 is fixedly connected to the second gear 13, the top of the main board 6 is fixedly installed with a first servo motor 11, and the output end of the first servo motor 11 is fixedly installed with a first gear 12.

[0033] In this embodiment, by rotating the bidirectional internal threaded tube 8, the threaded rod 9 can be pushed to move under the action of the thread thrust, and then the distance between the two grasping mechanisms 7 can be adjusted, thereby improving the flexibility of the device.

[0034] Specifically, both ends of the main board 6 are provided with a grabbing mechanism 7 , the surface of the upper fixing plate 723 is fixedly connected to the first guide plate 10 , and the surface of the first guide plate 10 is slidably connected to the main board 6 .

[0035] In this embodiment, by adding the first guide plate 10, the upper fixing plate 723 can be limited, thereby ensuring the stability of the relative movement between the bidirectional internal threaded tube 8 and the threaded rod 9, which is very convenient for use.

[0036] Specifically, the bottom of the main board 6 is fixedly connected with a slider 19, the top of the top plate 4 is fixedly connected with an annular slide rail 20, the inner wall of the slider 19 is slidably connected with the annular slide rail 20, and the bottom of the lower fixed plate 721 is fixedly installed with an LED projection lamp 751.

[0037] In this embodiment, by adding a slider 19 and an annular slide rail 20, the support strength of the mainboard 6 can be improved, thereby effectively improving the stability of the operation of the mainboard 6. An LED projection light 751 is provided to provide a light indication of the grabbing range of the grabbing mechanism 7, which is convenient for users to debug the equipment and is very beneficial for use.

[0038] Specifically, one end of the clamping plate 771 is fixedly connected to the adapter plate 772 , a spring 773 is fixedly connected between the adapter plate 772 and the mounting seat 761 , and a chamfer 763 is provided at the entrance of the slot 762 .

[0039] In this embodiment, by adding an adapter plate 772 and a spring 773, the position of the clamping plate 771 can be automatically reset and maintained under normal conditions, thereby improving the clamping stability of the clamping plate 74. The addition of a chamfer 763 can play a guiding role when plugging in the plug-in plate 781, further improving the convenience of removing and replacing the clamping plate 74, which is very convenient for use.

[0040] Specifically, the upper surface of the threaded column 3 is fixedly connected to the fourth gear 18 , and the output end of the second servo motor 16 is fixedly installed with the third gear 17 .

[0041] In this embodiment, by adding the third gear 17 and the fourth gear 18, the user can flexibly adjust the installation position of the second servo motor 16, without having to arrange the second servo motor 16 and the threaded column 3 in a straight line, thereby improving the practicality of the device.

[0042] Specifically, a controller 14 is fixedly mounted on the surface of the pillar 2 , a second guide plate 15 is slidably connected to the inner wall of the pillar 2 , and the top of the second guide plate 15 is fixedly connected to the top plate 4 .

[0043] In this embodiment, a second guide plate 15 is provided to guide and limit the top plate 4, making the top plate 4 run more stably, and a controller 14 is provided to perform program settings, thereby realizing fully automated operation of the equipment. The controller 14 uses the S7-200 model, which is more convenient to use.

[0044] The working principle and use process of the present invention are as follows: When the equipment is performing loading and unloading operations, the second servo motor 16 is first started, and the second servo motor 16 drives the threaded column 3 to rotate through the third gear 17 and the fourth gear 18. The threaded column 3 moves downward under the thread thrust of the pillar 2, and then cooperates with the second guide plate 15 to stably pull the top plate 4 downward. The top plate 4 drives the grabbing mechanism 7 to move downward through the main board 6. The grabbing mechanisms 7 at both ends of the main board 6 approach the finished product and the raw material respectively. Then the third servo motor 735 is started, and the third servo motor 735 drives the connecting plate 734 to rotate. , the connecting plate 734 drives the arc slide rail 733 to rotate, and the arc slide rail 733 pushes the guide block 732, so that the four guide blocks 732 slide inward along the strip slide groove 731, thereby driving the clamping plate 74 to quickly position and clamp the finished product and raw material, and then start the suction cup mechanism 752 for negative pressure adsorption reinforcement, and then reversely rotate the second servo motor 16 to move the grabbing mechanism 7 up, and then the stepping motor 5 drives the main board 6 to rotate half a circle, so that the grabbing mechanisms 7 at both ends exchange positions, and then the second servo motor 16 rotates to lower the grabbing mechanism 7, and then the suction cup mechanism 7 52 is closed and the third servo motor 735 is reversed to make the clamping plate 74 move outward to loosen the finished product and the raw material, realizing the loading and unloading operation of the equipment. When it is necessary to adjust the distance between the two grabbing mechanisms 7, the first servo motor 11 is started. The first servo motor 11 drives the bidirectional internal threaded tube 8 to rotate through the first gear 12 and the second gear 13. The bidirectional internal threaded tube 8 pushes the threaded rod 9 to move through the thread thrust, thereby realizing the adjustment of the distance between the two grabbing mechanisms 7. When the raw material conveying mechanism and the CNC machine tool are at different heights, during the rotation of the main board 6, the electric hydraulic cylinder 722 Then, the corresponding telescopic operation is performed to make up for the height difference between the two. When the clamping plate 74 of the corresponding specification needs to be replaced, the adapter plate 772 is first pulled outward, and the adapter plate 772 pulls out the card plate 771 and stretches the spring 773. At this time, the clamping plate 74 is pulled downward to make the plug plate 781 fall out from the inside of the slot 762. Then, the clamping plate 74 is replaced and the plug plate 781 is aligned with the slot 762 and inserted. Then, the adapter plate 772 is released, and the spring 773 releases the elastic force to drive the card plate 771 to reset and insert it into the inside of the card slot 782, thereby realizing the replacement of the clamping plate 74.

[0045] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A loading and unloading device for a CNC machine tool, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a pillar (2), the inner wall of the pillar (2) is connected to a threaded column (3) by a thread, a top plate (4) is provided on the top of the threaded column (3), a second servo motor (16) is fixedly installed on the bottom of the top plate (4), a stepper motor (5) is fixedly installed on the top of the top plate (4), a main board (6) is fixedly installed on the output end of the stepper motor (5), a gripping mechanism (7) is provided at the end of the main board (6), the gripping mechanism (7) comprises a gripping disc (71), a strip-shaped slide groove (731) is provided on the top of the gripping disc (71), a guide block (732) is slidably connected to the inner wall of the strip-shaped slide groove (731), an arc-shaped slide rail (733) is slidably connected to the top of the guide block (732), and the arc-shaped slide rail (733) is slidably connected to the top of the guide block (732). 3) is fixedly connected to the end of the guide block (732) with a connecting plate (734), the inner wall of the connecting plate (734) is fixedly mounted with a third servo motor (735), the output end of the third servo motor (735) is fixedly mounted on the top of the grabbing disc (71), the bottom of the guide block (732) is fixedly connected to a mounting seat (761), the bottom of the mounting seat (761) is provided with a slot (762), the inner wall of the slot (762) is slidably connected with an inserting plate (781), the bottom of the inserting plate (781) is fixedly connected to a clamping plate (74), the surface of the inserting plate (781) is provided with a card slot (782), the card slot (782) and the inner wall of the mounting seat (761) are both slidably connected with a card plate (771), and the bottom of the grabbing disc (71) is fixedly mounted with a suction cup mechanism (752).

2. A loading and unloading device for a CNC machine tool according to claim 1, characterized in that: A lower fixing plate (721) is fixedly connected to the surface of the grabbing plate (71), an electric hydraulic cylinder (722) is fixedly mounted on the top of the lower fixing plate (721), and an upper fixing plate (723) is fixedly mounted on the surface of the electric hydraulic cylinder (722).

3. The loading and unloading device for a CNC machine tool according to claim 2, characterized in that: The inner wall of the main board (6) is rotatably connected to a bidirectional internally threaded tube (8) via a bearing, the inner wall of the bidirectional internally threaded tube (8) is threadably connected to a threaded rod (9), one end of the threaded rod (9) is fixedly connected to an upper fixed plate (723), the surface of the bidirectional internally threaded tube (8) is fixedly connected to a second gear (13), a first servo motor (11) is fixedly mounted on the top of the main board (6), and a first gear (12) is fixedly mounted on the output end of the first servo motor (11).

4. The loading and unloading device for a CNC machine tool according to claim 3, characterized in that: Both ends of the main board (6) are provided with a grabbing mechanism (7), the surface of the upper fixed plate (723) is fixedly connected to a first guide plate (10), and the surface of the first guide plate (10) is slidably connected to the main board (6).

5. The loading and unloading device for a CNC machine tool according to claim 4, characterized in that: The bottom of the main board (6) is fixedly connected to a slider (19), the top of the top plate (4) is fixedly connected to an annular slide rail (20), the inner wall of the slider (19) is slidably connected to the annular slide rail (20), and the bottom of the lower fixed plate (721) is fixedly mounted with an LED projection lamp (751).

6. The loading and unloading device for a CNC machine tool according to claim 1, characterized in that: One end of the clamping plate (771) is fixedly connected to an adapter plate (772), a spring (773) is fixedly connected between the adapter plate (772) and the mounting seat (761), and a chamfer (763) is provided at the entrance of the slot (762).

7. The loading and unloading device for a CNC machine tool according to claim 1, characterized in that: A fourth gear (18) is fixedly connected to the upper surface of the threaded column (3), and a third gear (17) is fixedly mounted on the output end of the second servo motor (16).

8. The loading and unloading device for a CNC machine tool according to claim 1, characterized in that: A controller (14) is fixedly mounted on the surface of the pillar (2), a second guide plate (15) is slidably connected to the inner wall of the pillar (2), and the top of the second guide plate (15) is fixedly connected to the top plate (4).

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