CNC (computer numerical control) built-in stock bin positioning mechanism

Abstract

The utility model provides a stock bin positioning mechanism in a CNC (computerized numerical control) machine, which relates to the technical field of stock bin positioning of CNC machines and comprises a machine tool for machining workpieces, a base arranged in the machine tool and used for placing a stock bin and a positioning rod arranged on the base. The three sets of positioning rods are arranged in the length direction of the base, one end of each set of positioning rods is fixedly connected with a rotating base rotationally connected with the inner bottom face of the base, the three rotating bases are arranged, every two adjacent rotating bases can be opposite through rotation of the rotating bases, and then under the friction effect of a belt strip on the lifting frame, the belt strip can rotate. The stock bin can be transferred from one rotating seat to the rotating seat which is distributed opposite to the stock bin, and the stock bin can be transferred from one rotating seat to the other rotating seat by rotating and adjusting the position of the rotating seat again, so that the stock bin can enter the base in one direction and can be transferred on the base.

Description

Technical Field

[0001] The utility model relates to the technical field of CNC machine material bin positioning, in particular to a CNC machine internal material bin positioning mechanism. Background Art

[0002] CNC machine tools are the abbreviation of computer numerical control machine tools. They are automated machine tools controlled by programs. When loading and unloading the equipment, the traditional method is to manually take out the products and load them into the machine. Because of the manual loading and unloading, it consumes manpower.

[0003] Therefore, a CNC machine head loading and unloading mechanism, publication number: CN220902633U, includes a machine head and a workbench, the machine head is provided with a transferring mechanism for transferring blanks, the transferring mechanism includes a picking mechanism for grabbing the blanks and a lifting mechanism for driving the picking mechanism to lift and lower, the lifting mechanism is fixedly connected to the machine head, the picking mechanism is fixedly connected to the output end of the lifting mechanism, the workbench is fixedly connected with a clamp for automatically loosening and clamping the blanks, one side of the workbench is provided with a hopper for placing blanks and finished products and a clamping device for fixing the hopper, the clamping device includes a base and a clamping cylinder, the hopper is placed on the base, the hopper is clamped between the output rod of the clamping cylinder and the side wall of the base, and the base is provided with a positioning mechanism for positioning the hopper. The output rod of the clamping cylinder is extended to push the silo to the side wall of the base and press it against the base, thereby fixing the silo. The positioning mechanism includes several positioning rods, each of which is arranged at intervals from each other. A positioning groove matching the positioning rod is provided at the bottom of the silo. When the silo is placed, the positioning rod and the positioning groove cooperate to limit the movement of the silo in the left and right directions, thereby achieving the positioning of the silo.

[0004] However, because the position of the positioning rod is fixed, it also limits the loading movement direction of the hopper. Therefore, when multiple positioning mechanisms are set on the machine tool, the hopper needs to be pushed into the base in different directions, so a more complex control system is required. Utility Model Content

[0005] The purpose of the utility model is to solve the problems existing in the prior art and to propose a CNC machine internal material bin positioning mechanism.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a CNC machine internal hopper positioning mechanism, comprising a machine tool for workpiece processing, a base for placing the hopper in the machine tool, and a positioning rod arranged on the base, wherein three groups of positioning rods are arranged along the length direction of the base, and one end of each group of positioning rods is fixedly connected to a rotating seat rotatably connected to the inner bottom surface of the base, the rotating connection part between the rotating seat and the base extends to the bottom of the base and is fixedly installed with a connecting frame, and a lifting frame is inserted into the connecting frame located in the middle position among the three connecting frames, and a plurality of pulleys are rotatably connected to both sides of the top edge of the lifting frame, and a belt strip is frictionally fitted between the plurality of pulleys, and a through groove slidably connected to the lifting frame is provided on the inner bottom surface of the base between two adjacent rotating seats.

[0007] Preferably, among the three connecting frames, the connecting frames located on both sides are fixedly connected with paddles, the paddles are arranged in an arc shape and the heights of the two ends are staggered, and the paddles are used to push the lifting frame to move up and down.

[0008] Preferably, a single-axis motor corresponding to the three rotating seats is installed on the bottom surface of the base, and the main shaft of the single-axis motor is fixed to the bottom surface of the rotating seat at the corresponding position.

[0009] Preferably, a dual-axis motor is fixedly mounted on the lifting frame, and the two main shafts of the dual-axis motor extend to both sides of the lifting frame respectively. Among the several pulleys on one side of the lifting frame, the pulley located on one side is connected to the main shaft of the dual-axis motor through a sprocket set.

[0010] Preferably, the sprocket assembly consists of two sprockets fixed to the dual-axis motor main shaft and the pulley shaft respectively, and a chain meshingly connected to the two sprockets.

[0011] Preferably, one end of one side of the base is opened to facilitate the sliding of the hopper, and a sliding bar is inserted into one of the adjacent sides of the base located on the open side, and a sleeve is provided on the sliding bar and a spring rod is installed between the sleeve and the sliding bar.

[0012] Preferably, an electric push rod is connected between the outer side wall of the base and the sliding bar, and the position of the inner bottom surface of the base close to the opening of the side edge of the base is hollowed out and the hollowed out portion is slidably connected to the bottom edge of the insert.

[0013] Compared with the prior art, the advantages and positive effects of the present invention are:

[0014] 1. In the present invention, three rotating seats are provided, and the rotation of the rotating seats can realize that two adjacent rotating seats are opposite to each other. Then, under the friction of the belt strip on the lifting frame, the silo is transferred from one rotating seat to the rotating seat distributed opposite to it. The rotating seat is rotated again and the position is adjusted to realize the transfer of the silo from one rotating seat to another rotating seat, that is, the silo can enter the base in one direction and transfer its position on the base.

[0015] 2. In the present invention, the electric push rod is retracted to move the sliding bar toward the rotating seat, and during the movement, the elastic extension of the spring rod is used to push the insert cylinder along the hollow part of the base opening until it reaches the other side of the base. That is, the length of the sliding bar and the insert cylinder is equal to the length of the base, thereby blocking the material bins on the three rotating seats. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model proposes a three-dimensional structural diagram of a hopper positioning mechanism in a CNC machine;

[0017] Figure 2 This utility model proposes a structural diagram of the base of the hopper positioning mechanism in a CNC machine;

[0018] Figure 3 This utility model proposes a CNC machine internal hopper positioning mechanism Figure 2 Schematic diagram of the structure viewed from above;

[0019] Figure 4 This is a structural diagram of the lifting frame of the utility model;

[0020] Figure 5 This is a structural diagram of the plectrum of the present invention.

[0021] Legend: 1. Machine tool; 2. Base; 3. Spring rod; 4. Insert cylinder; 5. Sliding bar; 6. Electric push rod; 7. Rotating seat; 8. Through slot; 9. Positioning rod; 10. Paddle; 11. Lifting frame; 12. Single-axis motor; 13. Connecting frame; 14. Pulley; 15. Belt strip; 16. Dual-axis motor; 17. Sprocket assembly. DETAILED DESCRIPTION

[0022] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0024] like Figure 1-5 As shown, a CNC machine internal hopper positioning mechanism includes a machine tool 1 for processing a workpiece, a base 2 for placing a hopper is provided in the machine tool 1, and positioning rods 9 are provided on the base 2. The positioning rods 9 are provided in three groups along the length direction of the base 2, and one end of each group of positioning rods 9 is fixedly connected to a rotating seat 7 that is rotatably connected to the inner bottom surface of the base 2. Figure 2 As shown, when the hopper slides to the surface of the positioning rod 9 on the right rotating seat 7, the rotating seats 7 on the right and middle positions rotate until the suspended ends of the positioning rod 9 are opposite to each other, and then the hopper slides from the right rotating seat 7 to the rotating seat 7 in the middle position, the rotating seat 7 on the right is reset, and the rotating seat 7 in the middle position and the rotating seat 7 in the left position rotate until the suspended ends of the positioning rod 9 are opposite to each other, and the hopper on the rotating seat 7 in the middle position can be pushed to the rotating seat 7 on the left side, that is, this scheme can realize the transfer of the hopper from the right rotating seat 7 to the left by controlling the rotation of the rotating seat 7, that is, ensure that the hopper enters the base 2 along a fixed direction, and can change its position on the base 2, and the rotating seat 7 is rotatably connected to the base 2 Part of it extends to the bottom of the base 2 and is fixedly installed with a connecting frame 13. Among the three connecting frames 13, the connecting frame 13 located in the middle position is plugged with a lifting frame 11. Both sides of the top edge of the lifting frame 11 are rotatably connected to a number of pulleys 14, and belt strips 15 are friction-fitted between the pulleys 14. The inner bottom surface of the base 2 is provided with a through groove 8 that is slidably connected to the lifting frame 11 between two adjacent rotating seats 7. After the two adjacent rotating seats 7 are rotated to relative positions, the lifting frame 11 is used to rise until the lifting frame 11 passes through the through groove 8 and reaches the base 2. Therefore, the pulley 14 on the lifting frame 11 contacts the bottom edge of the silo, and under the action of friction, the silo is transferred from right to left or from left to right.

[0025] In addition: Among the three connecting frames 13, the connecting frames 13 on both sides are fixedly connected with a paddle 10, which is arranged in an arc shape and has a height staggered distribution at both ends. The paddle 10 is used to push the lifting frame 11 to rise and fall, and the bottom surface of the base 2 is installed with a single-axis motor 12 corresponding to the positions of the three rotating seats 7. The main shaft of the single-axis motor 12 is fixed to the bottom surface of the rotating seat 7 at the corresponding position. When transferring the silo, the rotating seat 7 in the middle position is first driven by the single-axis motor 12 at the corresponding position to rotate to the rotating seat 7 adjacent to it, and then the adjacent rotating seat 7 rotates. During the rotation, the paddle 10 on its surface will rotate at the same time, and then the oblique edge of the paddle 10 is used to push the lifting frame 11 to rise.

[0026] In addition: a dual-axis motor 16 is fixedly installed on the lifting frame 11, and the two main shafts of the dual-axis motor 16 extend to both sides of the lifting frame 11 respectively. Among the several pulleys 14 on one side of the lifting frame 11, the pulley 14 located on one side is connected to the main shaft of the dual-axis motor 16 through a sprocket group 17. The sprocket group 17 consists of two sprockets fixed to the main shaft of the dual-axis motor 16 and the wheel shaft of the pulley 14 respectively, and a chain meshing with the two sprockets. Under the transmission action of the sprocket group 17, the dual-axis motor 16 can drive the several pulleys 14 on both sides of the lifting frame 11 to rotate, and then the belt strip 15 is rotated under the action of friction.

[0027] In addition: one end of one side of the base 2 is an opening-shaped setting for sliding the silo in, and a sliding bar 5 is inserted into one of the adjacent sides of the base 2 on the open side, and a plug-in cylinder 4 is sleeved on the sliding bar 5 and a spring rod 3 is installed between the plug-in cylinder 4 and the sliding bar 5. An electric push rod 6 is connected between the outer wall of the base 2 and the sliding bar 5. The inner bottom surface of the base 2 is hollowed out near the opening of the side of the base 2 and the hollow part is slidably connected to the bottom edge of the plug-in cylinder 4. When the three rotating seats 7 on the base 2 are all equipped with silos, the three rotating seats 7 are rotated to the positions shown in FIG. Figure 2 In the state shown, the electric push rod 6 is then retracted to move the sliding bar 5 toward the rotating seat 7, and during the movement, the elastic extension of the spring rod 3 is used to push the insert cylinder 4 along the hollow part of the opening of the base 2 until it reaches the other side of the base 2, that is, the length of the sliding bar 5 and the insert cylinder 4 is equal to the length of the base 2, thereby blocking the upper silos of the three rotating seats 7.

[0028] Working principle: when the silo is installed, the opening along the side of the base 2 is first installed on the rotating seat 7 on the right side by plugging it with the positioning rod 9, and then the single-axis motor 12 drives the rotating seat 7 in the middle position and the lifting frame 11 to point to the rotating seat 7 on the right side, and then the rotating seat 7 on the right side drives the paddle 10 on its surface to rotate and swing toward the rotating seat 7 in the middle position, and the lifting frame 11 is lifted into the base 2 by the paddle 10 on the right side, and then the dual-axis motor 16 is used to drive the belt strip 15 to rotate, and under the action of friction, the silo is transferred from the rotating seat 7 on the right side to the rotating seat in the middle position. The lifting frame 11 is moved upwards to the movable seat 7, and then the rotating seat 7 on the right side is rotated and reset to install a new silo. At this time, under the action of gravity, the lifting frame 11 descends to the bottom of the base 2, and the rotating seat 7 in the middle position drives the silo to rotate 180 degrees and point to the rotating seat 7 on the left. Then the rotating seat 7 on the left side rotates to point to the rotating seat 7 in the middle position after rotating 180 degrees, and the action of the paddle 10 is used to realize that the lifting frame 11 rises and presses against the bottom surface of the silo. The silo can be pushed from the rotating seat 7 in the middle position to the rotating seat 7 on the left side under the action of the rotation of the belt strip 15 again.

[0029] The wiring diagram of the machine tool 1, the electric push rod 6, the single-axis motor 12 and the dual-axis motor 16 in the present invention is common knowledge in the field, and its working principle is a well-known technology. The model is selected according to the actual use. Therefore, the control method and wiring arrangement of the machine tool 1, the electric push rod 6, the single-axis motor 12 and the dual-axis motor 16 are not explained in detail.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A CNC machine internal hopper positioning mechanism, comprising a machine tool (1) for processing a workpiece, a base (2) provided in the machine tool (1) for accommodating the hopper, and a positioning rod (9) provided on the base (2), characterized in that: Three groups of positioning rods (9) are provided along the length direction of the base (2), and one end of each group of positioning rods (9) is fixedly connected to a rotating seat (7) rotatably connected to the inner bottom surface of the base (2); The rotation connection portion between the rotating seat (7) and the base (2) extends to the bottom of the base (2) and is fixedly mounted with three connecting frames (13), and a lifting frame (11) is plugged into the connecting frame (13) located in the middle position; Both sides of the top edge of the lifting frame (11) are rotatably connected to a plurality of pulleys (14), and a belt strip (15) is frictionally engaged between the plurality of pulleys (14). The inner bottom surface of the base (2) is located between two adjacent rotating seats (7) and is provided with a through groove (8) that is slidably connected to the lifting frame (11).

2. The CNC machine internal hopper positioning mechanism according to claim 1, characterized in that: Among the three connecting frames (13), the connecting frames (13) located on both sides are fixedly connected with a paddle (10), the paddle (10) is arranged in an arc shape and has two ends with staggered heights, and the paddle (10) is used to push the lifting frame (11) to move up and down.

3. The CNC machine internal hopper positioning mechanism according to claim 1, characterized in that: The bottom surface of the base (2) is mounted with a single-axis motor (12) corresponding to the positions of the three rotating seats (7) one by one, and the main shaft of the single-axis motor (12) is fixed to the bottom surface of the rotating seat (7) at the corresponding position.

4. The CNC machine internal hopper positioning mechanism according to claim 1, characterized in that: A dual-axis motor (16) is fixedly mounted on the lifting frame (11), and two main shafts of the dual-axis motor (16) extend to both sides of the lifting frame (11) respectively. Among the plurality of pulleys (14) on one side of the lifting frame (11), the pulley (14) located at one side is connected to the main shaft of the dual-axis motor (16) via a sprocket set (17).

5. The CNC machine internal hopper positioning mechanism according to claim 4, characterized in that: The sprocket assembly (17) is composed of two sprockets respectively fixed to the main shaft of the dual-shaft motor (16) and the wheel shaft of the belt pulley (14), and a chain meshed with the two sprockets.

6. The CNC machine internal hopper positioning mechanism according to claim 1, characterized in that: One end of one side of the base (2) is provided in an opening shape for the silo to slide into, and a sliding bar (5) is inserted into one of the adjacent sides of the base (2) located on the opening shape side, and an inserting tube (4) is sleeved on the sliding bar (5), and a spring rod (3) is installed between the inserting tube (4) and the sliding bar (5).

7. The CNC machine internal hopper positioning mechanism according to claim 6, characterized in that: An electric push rod (6) is connected between the outer wall of the base (2) and the sliding bar (5); the inner bottom surface of the base (2) near the side opening of the base (2) is hollowed out, and the hollowed-out portion is slidably connected to the bottom edge of the insert (4).

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