Automatic feeding device of thread rolling machine and thread rolling machine comprising feeding device

Abstract

The utility model discloses an automatic feeding device of a thread rolling machine and the thread rolling machine comprising the feeding device. The automatic feeding device of the thread rolling machine comprises a stock bin, a jacking mechanism and a V-shaped groove. One end of the stock bin is a feeding port, the other end of the stock bin is provided with the jacking mechanism and the V-shaped groove, and the face, used for containing pipes, of the stock bin is an inclined face and inclines downwards towards the side where the jacking mechanism is located. The clamping device is characterized in that a pushing device is arranged at one end of the V-shaped groove, a limiting baffle is arranged at the other end of the V-shaped groove, an in-place detector is arranged on the limiting baffle, a displacement detection sensor is arranged on the side face of the V-shaped groove, and at least two clamping positions are arranged on the V-shaped groove. According to the utility model, the automatic feeding of common pipes with the length of 30mm-350mm can be realized through the arrangement of the pushing device, and the automatic clamping of pipes with different lengths can be realized through the arrangement of a plurality of clamping positions.

Description

Technical Field

[0001] The utility model relates to the field of thread rolling machine processing, in particular to an automatic feeding device for a thread rolling machine and a thread rolling machine comprising the feeding device. Background Art

[0002] The conical tube sealing structure used in rail vehicles is generally processed by a thread rolling machine through a thread rolling process (an extrusion molding process without removing material); the existing thread rolling machine includes an automatic feeding device and an automatic unloading device, which can be specifically referred to in patents CN 202111614604.1 and CN202221093462.9; however, the structure of the automatic feeding device disclosed in CN202111614604.1 is relatively complex, requiring a feeding conveyor belt for feeding, a wedge-shaped discharge baffle plate is arranged above the conveyor belt, and a special laser sensor is also configured. The entire feeding device is bulky and occupies a relatively large space, and only one clamping position is provided, which is inconvenient for clamping pipes of different lengths; a feeding mechanism for a thread rolling machine is disclosed in patent CN202221093462.9, but the feeding module disclosed in the patent cannot accurately feed and clamp pipes of different lengths. Utility Model Content

[0003] In order to solve the technical problems existing in the prior art, the utility model discloses an automatic feeding device for a thread rolling machine and a thread rolling machine comprising the feeding device.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] In the first aspect, the utility model provides an automatic feeding device for a thread rolling machine, comprising a hopper, a lifting mechanism, and a V-shaped groove; one end of the hopper is a feeding port, and the other end is provided with a lifting mechanism and a V-shaped groove, and the surface of the hopper for placing the pipe is an inclined surface, which is inclined downward toward the side where the lifting structure is located; a pushing device is provided at one end of the V-shaped groove, and a limit baffle is provided at the other end, an in-position detector is provided on the limit baffle, and at least two clamping positions and at least two displacement detection sensors are provided on the V-shaped groove, and two floating guide blocks are provided at each clamping position, and the mating surfaces of the two floating guide blocks and the pipe are V-shaped, each floating guide block can float up and down, and the displacement detection sensor is used to detect the moving position of the pushing device.

[0006] As a further technical solution, the clamping positions are arranged sequentially along the length direction of the V-shaped groove.

[0007] As a further technical solution, a floating guide block is provided at each clamping position.

[0008] As a further technical solution, two notches are provided on the V-shaped groove, and the two notches are located at the clamping positions.

[0009] As a further technical solution, the pushing device includes a cylinder and a push rod, and the cylinder is connected to the push rod.

[0010] As a further technical solution, the cylinder is arranged below the V-shaped groove, and the push rod passes through the V-shaped groove and moves along the length direction of the V-shaped groove under the action of the cylinder.

[0011] As a further technical solution, the lifting mechanism includes a driving device and a lifting plate, and the surface of the lifting plate in contact with the pipe is an inclined surface.

[0012] As a further technical solution, a plurality of displacement detection sensors are provided and arranged along the length direction of the V-shaped groove.

[0013] In a second aspect, the utility model provides a thread rolling machine, which includes the automatic feeding device for the thread rolling machine described above.

[0014] As a further technical solution, the thread rolling machine also includes a robot grasping device, which is composed of a robot and a clamp, and the clamp is a double clamp.

[0015] As a further technical solution, a feeding device is also included.

[0016] The beneficial effects of the utility model are as follows:

[0017] The utility model can realize automatic feeding of commonly used DN10, DN15 and DN20 pipes with a length of 30mm-350mm by arranging a pushing device, and can realize automatic clamping of pipes of different lengths by arranging a plurality of clamping positions, and the displacement detection device is directly arranged on the side of the V-shaped groove, and the overall volume of the device is relatively small. The length of the pipe can be obtained according to the moving displacement of the pushing device detected by the displacement detection device, and then the length of the pipe and whether the pipe is pushed into place can be detected, so that accurate clamping of the pipe can be realized.

[0018] The utility model designs floating guide blocks at two clamping positions, and the floating guide blocks can float up and down. When not clamping, the floating guide blocks are at a high position, flush with the surface of the V-shaped groove, so that the pipe can slide through smoothly and avoid hitting the side of the clamping position; when the robot gripper grips the pipe, the gripper can press the floating guide blocks down to avoid the gripping space of the gripper, and the floating pressure required is small, which will not affect the gripping action of the gripper. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0020] Figure 1 It is a schematic diagram of the overall structure of the robot feeding device disclosed in the utility model;

[0021] Figure 2 It is a schematic diagram of two clamping positions of the robot loading device disclosed in the utility model;

[0022] Figure 3 It is a schematic diagram of the robot gripper disclosed in the utility model when gripping a pipe;

[0023] Figure 4 It is a schematic diagram of the relative arrangement of the floating guide blocks disclosed in the utility model;

[0024] In the figure: the distances or sizes between parts are exaggerated to show the positions of various parts, and the schematic diagram is for illustration only.

[0025] 1 silo, 2 lifting mechanism, 3 push rod, 4 V-groove, 5 robot gripper, 6 limit baffle, 7 in-position detection sensor, 8 pipe, 9 loading port; 10 first clamping position, 11 second clamping position, 12 first floating guide block, 13 second floating guide block, 14 displacement sensor. DETAILED DESCRIPTION

[0026] It should be noted that the following detailed descriptions are all illustrative and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0027] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise explicitly stated in the present invention, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or their combinations;

[0028] For the convenience of description, if the words "up", "down", "left" and "right" appear in the present invention, they only indicate that they are consistent with the up, down, left and right directions of the drawings themselves, and do not limit the structure. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0029] Terminology explanation section: The terms "install", "connect", "connect", "fixed" and so on in the present utility model should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements, or an interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0030] As introduced in the background technology, in order to solve the above technical problems, the present embodiment proposes an automatic feeding device for a thread rolling machine, which can realize automatic feeding of commonly used DN10, DN15, and DN20 pipes with a length of 30mm-350mm by setting a pushing device, and can realize automatic clamping of pipes of different lengths by setting a plurality of clamping positions, and the length detection device is directly arranged on the side of the V-groove. The overall volume of the device is relatively small, and it can realize the detection of the length of the pipe and the detection of whether the pipe is pushed into place, etc. By detecting the length of the pipe and the detection of whether the pipe is in place, accurate clamping of the pipe can be realized.

[0031] In a typical implementation of the present invention, Figure 1 As shown, the pipe feeding device disclosed in this embodiment is mainly composed of a silo 1, a lifting mechanism 2, a V-shaped groove 4, a push rod 3, a positioning detection component, etc., which mainly realizes automatic feeding and automatic positioning of pipes to meet the robot grasping requirements. The overall structure is shown in FIG. Figure 1 One end of the silo is a loading port 9, and the other end is provided with a jacking mechanism 2 and a V-shaped groove 4, and the surface of the silo used to place the pipe is an inclined surface, which is inclined downward toward the side where the jacking structure is located; a pushing device is provided at one end of the V-shaped groove 4, and a limit baffle is provided at the other end, an in-place detector is provided on the limit baffle, a pipe length detection sensor is provided on the side of the V-shaped groove 4, and at least two clamping positions are provided on the V-shaped groove 4, and the number of the clamping positions is adjusted according to the length of the pipe.

[0032] like Figure 1 As shown, the jacking mechanism 2 can rise or fall upward. When the jacking mechanism 2 falls, it can fall below the inclined surface. When the jacking mechanism 2 rises, it can rise to be flush with the highest point of the V-shaped groove 4. Furthermore, the jacking mechanism includes a driving device and a jacking trough. The trough is arranged in an "inclined" manner and is a structure that gradually narrows from bottom to top, ensuring that only one material can enter the V-shaped groove 4 at a time, avoiding multiple pipes from being stacked in parallel.

[0033] Furthermore, a robot gripper 5 is provided on the V-shaped groove 4, a material pushing device is provided at one end of the V-shaped groove 4, and a limit baffle 6 is provided at the other end. An in-place detection sensor 7 is provided on the limit baffle 6 to measure whether the pipe 8 currently entering the V-shaped groove 4 is moved into place, and transmit the signal to the robot gripping device, instructing the robot gripping device to run the set distance and position, thereby ensuring accurate gripping;

[0034] Furthermore, in this embodiment, two clamping positions are provided on the V-shaped groove, corresponding to the first clamping position 10 and the second clamping position 11 in the figure, that is, the robot gripper can clamp at the first clamping position or at the second clamping position. In the first clamping position, a short tube (30-120 mm) can be clamped, and in the second clamping position, a long tube (120-350 mm) can be clamped. The first clamping position is set at a position close to the positioning baffle, and the second clamping position is set at a position away from the positioning baffle.

[0035] Specifically, a displacement detection sensor 14 is also provided on the side of the V-shaped groove 4. The displacement detection sensor 14 detects the displacement of the push plate of the push device. A plurality of displacement detection sensors 14 are provided, which are arranged along the length direction of the V-shaped groove. The length of the tube is obtained according to the displacement of the push plate. For example, assuming that the push plate moves to the maximum position, it means that the tube is the shortest at this time and can be clamped at the first clamping position 10. When the push plate moves to the minimum position, it means that the tube is the longest at this time and can be clamped at the second clamping position 11. When the push plate moves to a position greater than half of the maximum position, it can be clamped at the first clamping position 10. When the push plate moves to a position less than half of the maximum position, it can be clamped at the second clamping position 11.

[0036] Furthermore, the gripping position must meet the gripping requirements of the robot gripper, which is located above the V-groove.

[0037] Further, floating guide blocks are designed at the two clamping positions, corresponding to the first floating guide block 12 and the second floating guide block 13 in the figure, and the first floating guide block 12 and the second floating guide block 13 each include two floating guide blocks (such as Figure 4 As shown in the figure, the two floating guide blocks form a V-shaped surface, that is, the matching surface of the two floating guide blocks and the pipe is V-shaped, and the angle of the matching surface is the same as the angle of the V-shaped groove 4. A notch is set on the V-shaped groove 4, and the floating guide block is set at the notch position and floats up and down. Specifically, when not clamping, the floating guide block is in a high position, flush with the surface of the V-shaped groove 4, allowing the pipe to slide through smoothly and avoid hitting the side of the clamping position; when the robot gripper grips the pipe, the gripper can press the floating guide block down to avoid the gripping space of the gripper, and the floating pressure required is small, which will not affect the gripping action of the gripper;

[0038] Furthermore, this embodiment also provides a thread rolling machine, which includes the aforementioned feeding device. Since the thread rolling machine is provided with the aforementioned feeding device, the thread rolling machine also has all the aforementioned advantages.

[0039] Furthermore, the thread rolling machine also includes a robot grasping device, which is mainly composed of a robot and a clamp, and is used to grasp the tube from the V-groove 4 to the thread rolling feeding module positioning tooling. After waiting for the thread rolling to be completed, the robot clamps the tube to achieve automatic reversal and puts it into the feeding module positioning tooling again, waiting for the thread rolling to be completed, and finally grasps it to the unloading device.

[0040] Further, the function of the clamping jaw structure is described as follows: It is used to clamp the pipe. The clamping jaw adopts a double-jaw structure, which can meet the clamping requirements of pipes with a diameter of 17 to 28 mm. The double-jaw structure can work alternately during loading and unloading to improve work efficiency, which can be increased by about 30% compared with the single-jaw structure. The clamping jaw adopts pneumatic or electric mode to ensure stable and reliable clamping. The clamping part is made of non-metallic material to avoid damaging the rolling thread.

[0041] Furthermore, the thread rolling machine in this embodiment also includes a thread rolling feeding module, which is composed of a feeding module frame, a feeding mechanism, a long tube support tooling, etc., wherein the core shaft of the feeding mechanism is a "conical" structure, because some tubes need to undergo a "tube shrinkage" operation, and the purpose of tube shrinkage is to ensure that the tube end that needs to be thread rolled forms a taper of a conical tube thread, and to ensure the accuracy of the thread after thread rolling. On the other hand, after one end is thread rolled, the inner diameter of the tube will have a certain "shrinkage". In order to ensure the "match" between the feeding mechanism and the inner diameter of the tube, the core shaft needs to be designed according to the corresponding tube specifications to ensure that the core shaft fits the inner diameter of the tube during feeding, to ensure the accuracy of feeding and that the tube will not be skewed during feeding.

[0042] The utility model can realize automatic feeding of commonly used DN10, DN15 and DN20 pipes with a length of 30mm-350mm by arranging a pushing device, and can realize automatic clamping of pipes of different lengths by arranging a plurality of clamping positions, and the length detection device is directly arranged on the side of the V-shaped groove, the overall volume of the device is relatively small, and can realize the detection of the length of the pipe and the detection of whether the pipe is pushed into place, etc. Through the detection of the length of the pipe and the detection of whether the pipe is in place, accurate clamping of the pipe can be realized.

[0043] Finally, it should be noted that relational terms such as first and second are merely used to distinguish one entity or operation from another entity or operation, but do not necessarily require or imply any actual relationship or order between these entities or operations.

[0044] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An automatic feeding device for a thread rolling machine, comprising a silo, a lifting mechanism, and a V-shaped groove; one end of the silo is a feeding port, and the other end is provided with a lifting mechanism and a V-shaped groove, and the surface of the silo for placing the pipe is an inclined surface, which is inclined downward toward the side where the lifting structure is located; characterized in that: A pushing device is arranged at one end of the V-shaped groove, and a limit baffle is arranged at the other end. An in-position detector is arranged on the limit baffle, and at least two clamping positions and at least two displacement detection sensors are arranged on the V-shaped groove. Two floating guide blocks are arranged at each clamping position. The mating surfaces of the two floating guide blocks and the pipe are V-shaped. Each floating guide block can float up and down, and the displacement detection sensor is used to detect the moving position of the pushing device.

2. The automatic feeding device for thread rolling machine according to claim 1, characterized in that: The clamping positions are arranged in sequence along the length direction of the V-shaped groove.

3. The automatic feeding device for thread rolling machine according to claim 1, characterized in that: A notch is arranged on the V-shaped groove, and the notch is the clamping position.

4. The automatic feeding device for thread rolling machine according to claim 1, characterized in that: The material pushing device comprises a cylinder and a push rod, and the cylinder is connected to the push rod.

5. The automatic feeding device for thread rolling machine according to claim 4, characterized in that: The cylinder is arranged below the V-shaped groove, and the push rod passes through the V-shaped groove and moves along the length direction of the V-shaped groove under the action of the cylinder.

6. The automatic feeding device for thread rolling machine according to claim 1, characterized in that: The lifting mechanism comprises a driving device and a lifting plate, and the surface of the lifting plate in contact with the pipe is an inclined surface.

7. The automatic feeding device for thread rolling machine according to claim 1, characterized in that: The displacement detection sensors are arranged in plurality and arranged along the length direction of the V-shaped groove.

8. A thread rolling machine, characterized in that: It comprises the automatic feeding device for a thread rolling machine as described in any one of claims 1-7.

9. The thread rolling machine according to claim 8, characterized in that It also includes a robot grasping device, which is composed of a robot and a clamping claw, and the clamping claw is a double clamping claw.

10. The thread rolling machine according to claim 8, characterized in that Also includes a feeding device.

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