Non-stop workpiece replacement mechanism

Abstract

The utility model discloses a non-stop work piece replacement mechanism, relates to numerical control machining technical field, including base and moving plate 2, the inside bottom surface of base is equipped with first guide groove and second guide groove from front to back in proper order, and the right side of base is equipped with servo motor 1 and servo motor 2 from front to back in proper order, and the moving plate 2 is equipped with the first guide groove and the second guide groove. The output end of the first servo motor penetrates through the right side of the base to be connected with a first ball screw, the exterior of the first ball screw is connected with a first lead screw nut, a first moving plate is arranged at the top of the first lead screw nut, a first sliding block penetrates through a sliding groove in the surface of the first moving plate, and the bottom of the first sliding block is connected with a first guide roller through a rotating shaft. According to the non-stop workpiece replacing mechanism, the forward and reverse rotation motor drives the driving shaft, the driving gear and the first clamping arm to rotate, the driving gear drives the driven gear to rotate so that the transmission shaft and the second clamping arm can rotate, the first clamping arm and the second clamping arm which are opposite in rotation direction are used for providing firm clamping force for a workpiece, and the stability of the workpiece in the machining process is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control machining, and particularly relates to a workpiece changing mechanism without stopping the machine. Background Technique

[0002] Numerical control machining refers to a process method of machining parts on a numerical control machine tool. The process regulations of numerical control machine tool machining and traditional machine tool machining are generally the same, but obvious changes have also occurred. It is a mechanical processing method that uses digital information to control the displacement of parts and tools. It is an effective way to solve problems such as variable part varieties, small batch sizes, complex shapes, high precision, etc., and to achieve high-efficiency and automated machining. When a numerical control machine tool is in use, a workpiece clamping mechanism is usually required to cooperate.

[0003] When machining a large number of workpieces through a numerical control lathe, a single workpiece clamping mechanism is difficult to adapt to a relatively high machining efficiency, and it is necessary to stop the machine to replace the workpiece midway, which consumes a certain amount of time.

[0004] Therefore, in view of this, research and improvement are carried out on the existing structure and deficiencies, and a workpiece changing mechanism without stopping the machine is proposed. Content of the Utility Model

[0005] The purpose of the utility model is to provide a workpiece changing mechanism without stopping the machine to solve the problems put forward in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A workpiece changing mechanism without stopping the machine, including a base and a second moving plate. The inner bottom surface of the base is successively provided with a first guiding groove and a second guiding groove from front to back, and a first servo motor and a second servo motor are successively installed on the right side of the base. The output end of the first servo motor penetrates through the right side of the base and is connected with a first ball screw, and a first screw nut is connected to the outside of the first ball screw. A first moving plate is arranged on the top of the first screw nut, and a first slider penetrates through the sliding groove on the surface of the first moving plate. The bottom of the first slider is connected with a first guide roller through a rotating shaft. The output end of the second servo motor penetrates through the right side of the base and is connected with a second ball screw, and a second screw nut is connected to the outside of the second ball screw. The second moving plate is arranged on the top of the second screw nut, and a second slider penetrates through the sliding groove on the surface of the second moving plate. The bottom of the second slider is connected with a second guide roller through a rotating shaft. Positioning components are arranged above the outside of the first slider and above the outside of the second slider.

[0007] Furthermore, a top plate is installed on the top of the base, and the base is of an inward concave structure.

[0008] Furthermore, the first guiding groove and the second guiding groove are symmetrically distributed with respect to the top plate, and the first ball screw and the second ball screw are parallel to each other.

[0009] Further, the first moving plate and the second moving plate are parallel to each other. The first guide roller is located in the first guide groove, and the second guide roller is located in the second guide groove.

[0010] Further, the positioning assembly includes a clamping table, a forward and reverse motor, and a driving shaft. A forward and reverse motor is installed on the left side of the bottom of the clamping table, and the output end of the forward and reverse motor penetrates through the clamping table and is connected to the driving shaft.

[0011] Further, the positioning assembly further includes a driving gear and a first clamping arm. The driving gear and the first clamping arm are sequentially arranged on the outer part of the driving shaft from bottom to top.

[0012] Further, the positioning assembly further includes a driven gear, a transmission shaft, and a second clamping arm. The outer side of the driving gear is connected to the driven gear. The transmission shaft passes through the middle of the driven gear, and the second clamping arm is arranged on the outer part of the transmission shaft.

[0013] Further, two sets of the positioning assemblies are provided, and the transmission shaft is rotatably connected to the clamping table.

[0014] The utility model provides a workpiece replacement mechanism without stopping the machine, which has the following beneficial effects:

[0015] 1. In the utility model, the first servo motor drives the first ball screw to rotate, so that the first screw nut drives the first moving plate to move horizontally to the right or left along the outer part of the first ball screw. The second servo motor drives the second ball screw to rotate, so that the second screw nut drives the second moving plate to move horizontally to the left or right along the outer part of the second ball screw. Thus, the two positioning assemblies alternately move to the processing position, achieving the function of replacing workpieces without stopping the machine and effectively improving the production capacity of the equipment.

[0016] 2. In the utility model, the forward and reverse motor drives the driving shaft, the driving gear, and the first clamping arm to rotate. The driving gear drives the driven gear to transmit power, so that the transmission shaft and the second clamping arm rotate. The first clamping arm and the second clamping arm with opposite rotation directions provide a firm clamping force for the workpiece, ensuring the stability of the workpiece during processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic top view structure diagram of a workpiece replacement mechanism without stopping the machine according to the utility model;

[0018] Figure 2 is a schematic top view structure diagram of the first moving plate and the second moving plate of a workpiece replacement mechanism without stopping the machine according to the utility model;

[0019] Figure 3 is a schematic three-dimensional structure diagram of a positioning assembly of a workpiece replacement mechanism without stopping the machine according to the utility model.

[0020] In the figure: 1, base; 2, top plate; 3, first guiding groove; 4, second guiding groove; 5, servo motor 1; 6, ball screw 1; 7, screw nut 1; 8, moving plate 1; 9, slider 1; 10, guide roller 1; 11, positioning component; 1101, clamping table; 1102, forward and reverse motor; 1103, drive shaft; 1104, driving gear; 1105, clamping arm 1; 1106, driven gear; 1107, transmission shaft; 1108, clamping arm 2; 12, servo motor 2; 13, ball screw 2; 14, screw nut 2; 15, moving plate 2; 16, slider 2; 17, guide roller 2. Detailed implementation mode

[0021] The following further describes in detail the implementation mode of the present utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0022] As Figure 1 and Figure 2 shown, a workpiece replacement mechanism without stopping the machine includes a base 1 and a moving plate 2 15. A top plate 2 is installed on the top of the base 1, and the base 1 is in a concave structure. The inner bottom surface of the base 1 is successively provided with a first guiding groove 3 and a second guiding groove 4 from front to back. A servo motor 1 5 and a servo motor 2 12 are successively installed on the right side of the base 1 from front to back. The output end of the servo motor 1 5 penetrates through the right side of the base 1 and is connected to a ball screw 1 6. A screw nut 1 7 is connected to the outside of the ball screw 1 6. A moving plate 1 8 is arranged on the top of the screw nut 1 7. A slider 1 9 is inserted through the chute on the surface of the moving plate 1 8. The bottom of the slider 1 9 is connected to a guide roller 1 10 through a rotating shaft. The output end of the servo motor 2 12 penetrates through the right side of the base 1 and is connected to a ball screw 2 13. A screw nut 2 14 is connected to the outside of the ball screw 2 13. The moving plate 2 15 is arranged on the top of the screw nut 2 14. A slider 2 16 is inserted through the chute on the surface of the moving plate 2 15. The bottom of the slider 2 16 is connected to a guide roller 2 17 through a rotating shaft. Positioning components 11 are arranged above the outside of the slider 1 9 and above the outside of the slider 2 16. The first guiding groove 3 and the second guiding groove 4 are symmetrically distributed with respect to the top plate 2. The ball screw 1 6 and the ball screw 2 13 are parallel to each other. The moving plate 1 8 and the moving plate 2 15 are parallel to each other. The guide roller 1 10 is located in the first guiding groove 3. The guide roller 2 17 is located in the second guiding groove 4.

[0023] The specific operation is as follows. The servo motor 1 drives the ball screw 1 to rotate, causing the screw nut 1 to drive the moving plate 1 to move horizontally to the right or left along the outside of the ball screw 1. The servo motor 2 drives the ball screw 2 to rotate, causing the screw nut 2 to drive the moving plate 2 to move horizontally to the left or right along the outside of the ball screw 2. Thus, the two positioning components 11 alternately move to the processing position, achieving the function of replacing workpieces without stopping the machine and effectively improving the production capacity of the equipment.

[0024] As Figure 3 shown, the positioning component 11 includes a clamping table 1101, a forward and reverse motor 1102, and a drive shaft 1103. The forward and reverse motor 1102 is installed on the left side of the bottom of the clamping table 1101, and the output end of the forward and reverse motor 1102 penetrates the clamping table 1101 and is connected to the drive shaft 1103. The positioning component 11 further includes a driving gear 1104 and a clamping arm 1 1105. The driving gear 1104 and the clamping arm 1 1105 are sequentially arranged on the outside of the drive shaft 1103 from bottom to top. The positioning component 11 further includes a driven gear 1106, a transmission shaft 1107, and a clamping arm 2 1108. The outside of the driving gear 1104 is connected to the driven gear 1106. The transmission shaft 1107 passes through the middle of the driven gear 1106, and the clamping arm 2 1108 is arranged on the outside of the transmission shaft 1107. There are two groups of positioning components 11, and the transmission shaft 1107 is rotatably connected to the clamping table 1101.

[0025] The specific operation is as follows. The forward and reverse motor 1102 drives the drive shaft 1103, the driving gear 1104, and the clamping arm 1 1105 to rotate. The driving gear 1104 drives the driven gear 1106 to drive the transmission shaft 1107 and the clamping arm 2 1108 to rotate. The clamping arm 1 1105 and the clamping arm 2 1108 with opposite rotation directions provide a firm clamping force for the workpiece to ensure the stability of the workpiece during processing.

[0026] In summary, when using this mechanism for replacing workpieces without stopping the machine, first, the servo motor 1 and the servo motor 2 are operated, causing the screw nut 1 and the screw nut 2 to move horizontally to the left and right along the outside of the ball screw 1 and the ball screw 2 respectively.

[0027] As the workpiece on the clamping table 1101 outside the slider 1 is fed into the processing position of the numerical control machine tool for processing, the forward and reverse motor 1102 on the clamping table 1101 outside the slider 2 will drive the drive shaft 1103 and the driving gear 1104 to rotate clockwise. The driving gear 1104 drives the driven gear 1106 to drive the transmission shaft 1107 to rotate counterclockwise, facilitating the removal of the processed workpiece between the clamping arm 1 1105 and the clamping arm 2 1108 and replacing it with a new workpiece.

[0028] Meanwhile, the workpiece on the clamping table 1101 outside the slider 1 is processed. The servo motor 1 5 and the servo motor 2 12 will drive the ball screw 1 6 and the ball screw 2 13 to rotate respectively, so that the screw nut 1 7 and the screw nut 2 14 move horizontally to the right and horizontally to the left along the outside of the ball screw 1 6 and the ball screw 2 13 respectively until the workpiece on the clamping table 1101 outside the slider 2 16 is fed into the processing position;

[0029] Since the guide rollers 1 10 and the guide rollers 2 17 slide along the first guide groove 3 and the second guide groove 4 respectively during the displacement of the moving plate 1 8 and the moving plate 2 15, and cause the slider 1 9 and the slider 2 16 to slide on the surface chutes of the moving plate 1 8 and the moving plate 2 15 respectively, the two sets of positioning components 11 can stably and alternately move to the processing position, achieving the function of replacing workpieces without stopping the machine, and the numerical control machine tool is always in the working state, effectively improving the equipment productivity.

[0030] The embodiments of the present invention are given for purposes of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to best explain the principles of the invention and its practical application, and to enable those of ordinary skill in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A mechanism for replacing workpieces without stopping the machine, comprising a base (1) and a movable plate (15), characterized in that: The inner bottom surface of the base (1) is provided with a first guide groove (3) and a second guide groove (4) in sequence from front to back, and a servo motor (5) and a servo motor (12) are installed in sequence from front to back on the right side of the base (1), the output end of the servo motor (5) passes through the right side of the base (1) and is connected to a ball screw (6), and the outside of the ball screw (6) is connected to a screw nut (7), a moving plate (8) is arranged on the top of the screw nut (7), and a sliding block (9) is penetrated in the sliding groove on the surface of the moving plate (8), and the bottom of the sliding block (9) is passed through A guide roller 1 (10) is connected through a rotating shaft, an output end of the servo motor 2 (12) passes through the right side of the base (1) and is connected to a ball screw 2 (13), and the outside of the ball screw 2 (13) is connected to a screw nut 2 (14), the movable plate 2 (15) is arranged on the top of the screw nut 2 (14), and a slider 2 (16) is passed through the sliding groove on the surface of the movable plate 2 (15), the bottom of the slider 2 (16) is connected to a guide roller 2 (17) through a rotating shaft, and a positioning component (11) is arranged on the outer upper part of the slider 1 (9) and the outer upper part of the slider 2 (16).

2. The mechanism for replacing workpieces without stopping the machine according to claim 1, characterized in that: A top plate (2) is installed on the top of the base (1), and the base (1) is in a concave structure.

3. The mechanism for replacing workpieces without stopping the machine according to claim 1, characterized in that: The first guide groove (3) and the second guide groove (4) are symmetrically distributed with respect to the top plate (2), and the first ball screw (6) and the second ball screw (13) are parallel to each other.

4. The mechanism for replacing workpieces without stopping the machine according to claim 1, characterized in that: The movable plate 1 (8) and the movable plate 2 (15) are parallel to each other, the guide roller 1 (10) is located in the first guide groove (3), and the guide roller 2 (17) is located in the second guide groove (4).

5. The mechanism for replacing workpieces without stopping the machine according to claim 1, characterized in that: The positioning assembly (11) comprises a clamping platform (1101), a forward and reverse motor (1102) and a driving shaft (1103), wherein the forward and reverse motor (1102) is installed on the left side of the bottom of the clamping platform (1101), and the output end of the forward and reverse motor (1102) passes through the clamping platform (1101) and is connected to the driving shaft (1103).

6. The mechanism for replacing workpieces without stopping the machine according to claim 5, characterized in that: The positioning assembly (11) further comprises a driving gear (1104) and a clamping arm (1105), and the outside of the driving shaft (1103) comprises the driving gear (1104) and the clamping arm (1105) in sequence from bottom to top.

7. The mechanism for replacing workpieces without stopping the machine according to claim 6, characterized in that: The positioning assembly (11) further comprises a driven gear (1106), a transmission shaft (1107) and a second clamping arm (1108), wherein the outer side of the driving gear (1104) is connected to the driven gear (1106), a transmission shaft (1107) is passed through the middle of the driven gear (1106), and a second clamping arm (1108) is arranged outside the transmission shaft (1107).

8. The mechanism for replacing workpieces without stopping the machine according to claim 7, characterized in that: The positioning assembly (11) is provided with two groups, and the transmission shaft (1107) and the clamping platform (1101) are rotatably connected.

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