Machine tool feeding truss with step-by-step feeding function

Abstract

The utility model discloses a step-by-step feeding machine tool feeding truss which comprises a second trough arranged on a machine tool. The material receiving opening is formed in the inner bottom end of the second trough; the elastic baffle is connected to the lower end of the material receiving opening in a sliding manner; the U-shaped block is connected to the lower end of the material receiving opening in a sliding mode, and the U-shaped block is in transmission connection with the elastic baffle; an opening of the U-shaped block faces upwards; a first pushing air cylinder is arranged on the U-shaped block; a first pushing block is arranged at the tail end of a sliding rod of the pushing air cylinder. Full-automatic feeding and discharging are conducted on the machine tool, and the machining efficiency of the machine tool is improved. Especially for a to-be-machined workpiece with a small operation position or a smooth operation position, the non-clamping moving mode has the advantages of being low in feeding error rate and accurate in moving position. Clamping is not adopted, the number of power elements can be reduced, and the position control precision can be improved; and a plurality of to-be-machined workpieces are added at a time, so that the manual participation time is shortened.

Description

Technical Field

[0001] The utility model belongs to the technical field of machine tool equipment, and particularly relates to a step-by-step feeding truss for a machine tool. Background Art

[0002] The machine tool feeding truss is a robot processing system used for automatic loading and unloading of machine tools. It can realize automatic loading and unloading, processing and other tasks in machining, helping the machining industry to improve production efficiency and production quality, reduce costs, and thus improve the competitiveness of enterprises in the industry. The truss manipulator is an important part of the machine tool loading and unloading system, which is used to realize the grabbing and loading and unloading operations of machining materials.

[0003] Existing Chinese patent documents disclose a truss-type automatic feeding module, including a truss assembly and a material tray assembly arranged outside a machine tool, the truss assembly is provided with a first material changing robot for changing materials on a machine tool fixture, and a first driving device is connected to the first material changing robot and drives it to run along the X and Z axes. The first material changing robot is located above the material tray assembly, and the material tray assembly is provided with a second material changing robot for changing materials with the first material changing robot.

[0004] The above patent solution can only be applied to workpieces that are easy to clamp. However, for round pancake-shaped or sheet-shaped workpieces, since the clamping end faces of these types of workpieces are small or the clamping surfaces are smooth, the robot clamping success rate is often low, or the machine tool fixture positioning is inaccurate. Utility Model Content

[0005] In order to overcome the technical problem that the manipulator in the prior art machine tool feeding truss is not convenient for clamping the round cake / sheet-shaped workpiece, and also causes inaccurate positioning of the parts relative to the machine tool fixture, one purpose of the utility model is to provide a machine tool feeding truss with step-by-step feeding, by providing a trough body for accommodating the workpiece to be processed on the sliding block, and providing a push block for pushing the workpiece to be processed in the trough body, the stacked workpieces to be processed are added to the trough body in turn, and then the round cake / sheet-shaped parts are driven by the trough body for loading and unloading.

[0006] In order to achieve the above-mentioned objectives, the utility model adopts the following technical solutions: 1. A feeding truss for a machine tool with step-by-step feeding, comprising a second material trough, which is arranged on the machine tool; a material receiving port, which is arranged at the bottom end of the second material trough; an elastic baffle, which is slidably connected to the lower end of the material receiving port and can selectively close the material receiving port; a U-shaped block, which is slidably connected to the lower end of the material receiving port, and the U-shaped block is transmission-connected to the elastic baffle; wherein the opening of the U-shaped block faces upward, and the opening of the U-shaped block can be selectively connected to the material receiving port; a first pushing cylinder is arranged on the U-shaped block; a first pushing block is arranged at the end of the sliding rod of the pushing cylinder; the first pushing block is located in the opening of the U-shaped block.

[0007] When the U-shaped block moves to just below the material receiving port, the opening of the U-shaped block is connected to the material receiving port, and the workpiece to be processed in the second material trough falls into the U-shaped block through the material receiving port under the action of gravity; when the U-shaped block moves to the machine tool processing position, the first pushing block pushes the workpiece to be processed to the processing position for processing, and the elastic baffle moves to close the material receiving port, and the workpiece to be processed in the second material trough is continuously supplied to the material receiving port position.

[0008] The U-shaped block drives the round or sheet-shaped workpiece to be processed to be loaded, and there is no need to clamp this type of part. While improving the degree of automation, it also reduces the error rate of the loading process and improves the position movement accuracy of the workpiece to be processed.

[0009] Furthermore, the machine tool is provided with a first material trough connected to the second material trough; the workpiece to be processed is connected to the second material trough in a radial sliding manner, and the workpiece to be processed is connected to the first material trough in an axial sliding manner; an elastic pressure plate is provided in the first material trough, and the elastic pressure plate is used to push the workpiece to be processed from the first material trough into the second material trough.

[0010] Specifically, the machine tool is provided with a material dividing cylinder; a push plate is provided at the end of the sliding rod of the material dividing cylinder; the push plate is slidably connected in the second material trough; the push plate is used to push the workpiece to be processed from the second material trough into the material receiving port.

[0011] When the workpiece to be processed is located in the first material trough, several layers can be stacked, and a single manual loading can continue the automated work for a long time, reducing the time of manual participation. A single person can operate multiple devices at the same time, which helps to improve processing efficiency; the workpiece to be processed enters the second material trough under the push of the material distribution cylinder, and then falls into the U-shaped block. The pressure of the elastic pressure plate cannot act on the workpiece to be processed in the second material trough, thereby preventing the workpiece to be processed in the second material trough from failing to fall normally due to excessive pressure from the elastic pressure plate or excessive friction between adjacent workpieces to be processed.

[0012] Furthermore, a pneumatic clamp is rotatably connected to the machine tool; an annular block is slidably connected to the machine tool; the annular block and the U-shaped block are symmetrically arranged on both sides of the annular block; a second pushing cylinder is arranged on the annular block; a second pushing block is arranged at the end of the sliding rod of the pushing cylinder; the second pushing block is located inside the annular block.

[0013] The annular block is used to move the processed parts on the pneumatic clamp to the collection station. The loading and unloading processes can be carried out simultaneously, which helps to improve the processing efficiency. The annular block can move the parts more stably and prevent the processed parts from falling and being damaged.

[0014] Specifically, the machine tool is provided with a blanking cylinder; a blanking plate is provided on the slider of the blanking cylinder; the annular block is mounted on the blanking plate; the inner wall of the annular block is provided with a first conical surface; the diameter of the first conical surface close to the blanking plate is larger than the diameter away from the blanking plate;

[0015] Due to the existence of the intrusion angle, the machined part is not easy to fall off when it is located in the conical surface, and even when the outer periphery of the workpiece is cut smooth, it can provide better stability.

[0016] Specifically, a plurality of notches are arranged at one end of the annular block facing the pneumatic clamp; the notches are evenly distributed along the circumference of the annular block; and one of the notches is located at the lowermost end of the annular block.

[0017] The notch facilitates the outflow of cutting fluid attached to the surface of the machined part, and prevents the cutting fluid mixed with chips from being retained in the annular block.

[0018] Specifically, an inner push table is slidably connected inside the pneumatic clamp; the inner push table slides along the rotation axis direction of the pneumatic clamp; a plurality of blowing holes are arranged on the outer wall of the inner push table; the blowing holes are evenly distributed along the circumferential direction of the inner push table; the blowing holes are directly opposite to the clamping fingers of the pneumatic clamp.

[0019] The inner push table slides outward to push the workpiece on the pneumatic clamp into the annular block, and at the same time the air hole blows up to remove impurities such as chips and cutting fluid attached to the pneumatic clamp to prevent them from affecting the clamping of the workpiece and preventing chips from entering the gaps between the clamping fingers.

[0020] Specifically, a convex ring is provided at one end of the inward-thrusting cone facing the annular block; the axis of the convex ring is coaxial with the rotating axis of the pneumatic clamp; the inner wall of the convex ring is provided with a second conical surface; the diameter of the second conical surface close to the annular block is larger than the diameter away from the annular block.

[0021] The convex ring pushes the workpiece outwards evenly to prevent the workpiece from tilting and getting stuck in the pneumatic fixture, or falling from the circular block; the second conical surface can also prevent chips and cutting fluid from accumulating in the convex ring.

[0022] Furthermore, the machine tool is provided with a long slide rail; a loading plate is slidably connected to the long slide rail; the U-shaped block is installed on the loading plate; the machine tool is provided with a loading cylinder; and a slider of the loading cylinder is fixedly connected to the loading plate.

[0023] Furthermore, a closing spring is provided between the elastic baffle and the machine tool; the elastic force of the closing spring is used to make the elastic baffle slide toward the material receiving port; and the U-shaped block can selectively abut against the elastic baffle.

[0024] Compared with the prior art, the beneficial effects of the utility model are: fully automatic loading and unloading on the machine tool, reducing the degree of manual participation and workload, and improving the processing efficiency of the machine tool; especially for round pancake / sheet parts and other workpieces to be processed with small or smooth operating positions, a non-clamping movement method is adopted, which has the advantages of low loading error rate and precise movement position; at the same time, without adopting a clamping method, the number of power components and position control accuracy can be reduced, the production cost is low, and it is easy to control the program; manually adding multiple workpieces to be processed at one time reduces the manual participation time, and humans can operate multiple machine tools at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the utility model;

[0026] Figure 2 It is a schematic diagram of the parts explosion of the utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the U-shaped block of the utility model;

[0028] Figure 4 It is a structural schematic diagram of the annular block of the utility model;

[0029] Figure 5 This is a structural schematic diagram of the silo of the utility model;

[0030] Figure 6 It is a structural schematic diagram of the inner body frustum of the utility model;

[0031] Figure 7 It is a structural schematic diagram of the feeding process of the utility model;

[0032] Figure 8 It is a structural schematic diagram of the blanking process of the utility model.

[0033] In the figure: 11, mounting plate; 12, long slide rail; 13, short slide rail; 21, pneumatic clamp; 22, inner push round table; 221, blowing hole; 222, convex ring; 31, loading plate; 32, U-shaped block; 33, first pushing cylinder; 34, loading cylinder; 35, first pushing block; 41, unloading plate; 42, annular block; 421, notch; 43, second pushing cylinder; 44, unloading cylinder; 45, second pushing block; 51, silo; 511, first trough; 512, second trough; 513, material receiving port; 52, elastic baffle; 53, pushing plate; 54, material dividing cylinder. DETAILED DESCRIPTION

[0034] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0035] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of narrating the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific protection scope of the present invention.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0037] In the present invention, unless otherwise specified and limited, the terms "setting", "installation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can also be a mechanical connection; it can be directly connected, or it can be connected through an intermediate medium, or two elements can be internally connected. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] See also Figure 1-Figure 8, a step-by-step feeding machine tool feeding truss, comprising a machine tool, a pneumatic clamp 21 rotatably connected to the machine tool, a mounting plate 11 disposed on the machine tool and located above the pneumatic clamp 21, and a tool assembly slidably connected to the machine tool;

[0039] A long slide rail 12 is provided on the mounting plate 11 above the pneumatic clamp 21; a loading plate 31 is slidably connected on the long slide rail 12 and located on the right side of the pneumatic clamp 21; a U-shaped block 32 is provided at the lower end of the loading plate 31 facing the side of the pneumatic clamp 21; a first pushing cylinder 33 is provided at the lower end of the loading plate 31; a first pushing block 35 is provided on the sliding rod of the first pushing cylinder 33 and located in the U-shaped block 32; a loading cylinder 34 is provided on the mounting plate 11 and located on the right side of the pneumatic clamp 21; the slider of the loading cylinder 34 is fixedly connected to the loading plate 31.

[0040] A blanking plate 41 is slidably connected to the long slide rail 12 at the left side of the pneumatic clamp 21; a ring block 42 is arranged at the lower end of the blanking plate 41 facing the side of the pneumatic clamp 21; a second pushing cylinder 43 is arranged at the lower end of the blanking plate 41; the sliding rod end of the second pushing cylinder 43 is located in the ring block 42 and a second pushing block 45 is arranged; a blanking cylinder 44 is arranged on the mounting plate 11 at the left side of the pneumatic clamp 21; the slider of the blanking cylinder 44 is fixedly connected to the blanking plate 41; a first conical surface is arranged on the inner wall of the ring block 42; the diameter of the first conical surface close to the blanking plate 41 is larger than the diameter away from the blanking plate 41; a plurality of notches 421 are arranged on one end of the ring block 42 facing the pneumatic clamp 21; each of the notches 421 is evenly distributed along the circumferential direction of the ring block 42; one of the notches 421 is located at the lowermost end of the ring block 42.

[0041] A material bin 51 is arranged on the mounting plate 11 at the left side of the loading plate 31; a first material trough 511 arranged along the rotating axis direction of the pneumatic clamp 21 is arranged on the material bin 51; a second material trough 512 arranged along the left-right direction and connected with the first material trough 511 is arranged on the material bin 51; a material receiving port 513 is arranged at the lower end of the second material trough 512; a short slide rail 13 is arranged on the mounting plate 11 below the pneumatic clamp 21; an elastic baffle 52 is slidably connected to the lower end of the material receiving port 513 on the short slide rail 13; a closing spring is arranged between the elastic baffle 52 and the mounting plate 11; the elastic force of the closing spring is used to make the elastic baffle 52 slide toward the material receiving port 513.

[0042] The U-shaped block 32 can be optionally abutted against the elastic baffle 52; the opening of the U-shaped block 32 faces upward, and the opening of the U-shaped block 32 can be optionally connected to the material receiving port 513; an elastic pressure plate is arranged in the first material trough 511, and the elastic pressure plate is used to push the workpiece to be processed from the first material trough 511 into the second material trough 512; a material dividing cylinder 54 is arranged on the mounting plate 11; a push plate 53 is arranged at the end of the sliding rod of the material dividing cylinder 54; the push plate 53 is slidably connected in the second material trough 512; the push plate 53 is used to push the workpiece to be processed from the second material trough 512 into the material receiving port 513.

[0043] An inner push table 22 is slidably connected inside the pneumatic clamp 21; the inner push table 22 slides along the rotation axis direction of the pneumatic clamp 21; a plurality of blowing holes 221 are arranged on the outer wall of the inner push table 22; the blowing holes 221 are evenly distributed along the circumferential direction of the inner push table 22; the blowing holes 221 are directly opposite to the clamping fingers of the pneumatic clamp 21; a convex ring 222 is arranged on one end of the inner push table 22 facing the annular block 42; the axis of the convex ring 222 is coaxial with the rotation axis of the pneumatic clamp 21; a second conical surface is arranged on the inner wall of the convex ring 222; the diameter of the second conical surface close to the annular block 42 is larger than the diameter away from the annular block 42.

[0044] Working process:

[0045] The pneumatic clamp 21 starts to rotate after clamping the workpiece to be processed, and at the same time, the tool assembly slides toward the pneumatic clamp 21 to perform operations on the workpiece to be processed (milling, punching and other processing processes). After milling is completed, the tool assembly returns to its original position and the pneumatic clamp 21 stops rotating. The unloading cylinder 44 drives the unloading plate 41 to slide to the right extreme position, and the annular block 42 is directly opposite to the pneumatic clamp 21. While the pneumatic clamp 21 releases the part, the inner push table 22 pushes the part outward to make it enter the annular block 42. Subsequently, the unloading cylinder 44 drives the unloading plate 41 to slide to the left extreme position, and the second push cylinder 43 drives the second push block 45 to slide outward to push the workpiece in the annular block 42, and the workpiece falls into the collection box.

[0046] While the annular block 42 slides to the left, the loading cylinder 34 drives the loading plate 31 to slide to the left to the limit position, driving the workpiece to be processed in the U-shaped block 32 to move to face the center of the pneumatic clamp 21, and the elastic baffle 52 slides to the left to close the material receiving port 513 under the elastic force of the closing spring. The first pushing cylinder 33 drives the first pushing block 35 to slide outward, pushing the workpiece to be processed in the U-shaped block 32 into the pneumatic clamp 21, and the pneumatic clamp 21 clamps the workpiece to be processed. In this process, the material dividing cylinder 54 drives the push plate 53 to slide to the right until the first material trough 511 is no longer closed, and the workpiece to be processed in the first material trough 511 is pushed into the second material trough 512 under the elastic force of the elastic pressure plate. Subsequently, the material dividing cylinder 54 drives the push plate 53 to slide to the left to push the workpiece to be processed in the second material trough 512 into the material receiving port 513.

[0047] Then, the feeding cylinder 34 drives the feeding plate 31 to slide to the right, and the feeding plate 31 slides against the elastic baffle 52 and drives it to move synchronously, the closed spring is compressed and stored, and when the feeding plate 31 slides to the right limit position, the opening of the U-shaped block 32 is directly opposite to and connected with the receiving port 513, and the workpiece in the receiving port 513 falls into the U-shaped block 32. At the same time, the pneumatic clamp 21 clamps the workpiece and starts to rotate, and the tool assembly slides toward the pneumatic clamp 21 to operate on the workpiece. This goes back and forth.

[0048] The above description is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any changes or modifications made by any technician in the field of the present invention are included in the patent scope of the present invention.

Claims

1. A step-by-step feeding machine tool feeding truss, characterized in that: It includes a second material trough, and the second material trough is arranged on the machine tool; A material receiving port, the material receiving port being arranged at the bottom end of the second material trough; An elastic baffle, which is slidably connected to the lower end of the material receiving opening and can selectively close the material receiving opening; A U-shaped block, the U-shaped block is slidably connected to the lower end of the material receiving port, and the U-shaped block is drivingly connected to the elastic baffle; Among them, the opening of the U-shaped block faces upward, and the opening of the U-shaped block can be selectively connected to the material receiving port; a first pushing cylinder is arranged on the U-shaped block; a first pushing block is arranged at the end of the sliding rod of the pushing cylinder; the first pushing block is located in the opening of the U-shaped block.

2. The feeding truss according to claim 1, characterized in that: The machine tool is provided with a first material trough connected to the second material trough; the workpiece to be processed is connected to the second material trough in a radial sliding manner, and the workpiece to be processed is connected to the first material trough in an axial sliding manner; an elastic pressure plate is provided in the first material trough, and the elastic pressure plate is used to push the workpiece to be processed from the first material trough into the second material trough.

3. The feeding truss according to claim 2, characterized in that: The machine tool is provided with a material dividing cylinder; a push plate is provided at the end of the sliding rod of the material dividing cylinder; the push plate is slidably connected in the second material trough; the push plate is used to push the workpiece to be processed from the second material trough into the material receiving port.

4. The feeding truss according to any one of claims 1 to 3, characterized in that: A pneumatic clamp is rotatably connected to the machine tool; an annular block is slidably connected to the machine tool; the annular block and the U-shaped block are symmetrically arranged on both sides of the annular block; a second pushing cylinder is arranged on the annular block; a second pushing block is arranged at the end of the sliding rod of the pushing cylinder; the second pushing block is located in the annular block.

5. The feeding truss according to claim 4, characterized in that: The machine tool is provided with a feeding cylinder; a feeding plate is provided on the slider of the feeding cylinder; the annular block is installed on the feeding plate; the inner wall of the annular block is provided with a first conical surface; the diameter of the first conical surface close to the feeding plate is larger than the diameter away from the feeding plate.

6. The feeding truss according to claim 4, characterized in that: A plurality of notches are arranged at one end of the annular block facing the pneumatic clamp; the notches are evenly distributed along the circumference of the annular block; and one of the notches is located at the lowermost end of the annular block.

7. The feeding truss according to claim 4, characterized in that: An inner push table is slidably connected inside the pneumatic clamp; the inner push table slides along the rotation axis direction of the pneumatic clamp; a plurality of blowing holes are arranged on the outer wall of the inner push table; the blowing holes are evenly distributed along the circumferential direction of the inner push table; the blowing holes are directly opposite to the clamping fingers of the pneumatic clamp.

8. The feeding truss according to claim 7, characterized in that: A convex ring is provided at one end of the inwardly pushed truncated cone facing the annular block; the axis of the convex ring is coaxial with the rotating axis of the pneumatic clamp; a second conical surface is provided on the inner wall of the convex ring; the diameter of the second conical surface close to the annular block is larger than the diameter away from the annular block.

9. The feeding truss according to any one of claims 1 to 3, characterized in that: The machine tool is provided with a long slide rail; a loading plate is slidably connected to the long slide rail; the U-shaped block is mounted on the loading plate; the machine tool is provided with a loading cylinder; the slider of the loading cylinder is fixedly connected to the loading plate.

10. The feeding truss according to any one of claims 1 to 3, characterized in that: A closing spring is arranged between the elastic baffle and the machine tool; the elastic force of the closing spring is used to make the elastic baffle slide toward the material receiving port; the U-shaped block can selectively abut against the elastic baffle.

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