Displacement jig based on PLC and servo motor

Abstract

The utility model discloses a displacement jig based on a PLC (Programmable Logic Controller) and a servo motor. The displacement jig comprises a control box and an actuating mechanism, a programmable controller, a servo controller, a switching power supply, a filter and an air switch are arranged in the control box, and the servo controller is in communication connection with the programmable controller; the executing mechanism comprises a shell, a servo motor and a positioning assembly, the servo motor is arranged in the shell, the positioning assembly is arranged outside the shell, the positioning assembly is connected with an output rotating shaft of the servo motor, and the positioning assembly is used for loading a workpiece to be machined so that the workpiece can be driven by the servo motor to rotate; an encoder wire connector and a power wire connector of the servo motor extend outwards from a shell of the executing mechanism, an output end connector of the programmable controller and an output end connector of the servo controller extend outwards from the control box, and the encoder wire connector is electrically connected with the output end connector of the programmable controller through an encoder wire. The power line connector is electrically connected with the output end connector of the servo controller through a power line.

Description

Technical Field

[0001] The utility model relates to the field of mechanical fixtures, in particular to a displacement fixture based on PLC and a servo motor suitable for laser engraving processing applications. Background Art

[0002] Laser engraving machine uses laser beam to carve permanent marks on the surface of materials or inside transparent materials. Laser beam can produce chemical and physical effects on materials. After the material absorbs the laser light instantly, it will produce physical or chemical reactions, thereby carving marks or displaying patterns or texts. Therefore, it is also called laser marking machine or laser engraving machine.

[0003] In the existing technology, some injection molded products need to laser engrave multiple patterns on the cylindrical / conical surface. These products often need to use positioning jigs to assist production during the production process, and need to be manually placed on the surface such as Figure 1 The positioning jig shown prevents the laser engraving position from shifting, and requires multiple sets of jigs and multiple processes to complete, which has low efficiency and high labor costs. In addition, due to the large number of production processes, the probability of product defects is high.

[0004] The disclosure of the above background technology content is only used to assist in understanding the concept and technical solution of the utility model. It does not necessarily belong to the prior art of this patent application, nor does it necessarily provide technical guidance. In the absence of clear evidence that the above content has been disclosed before the filing date of this patent application, the above background technology should not be used to evaluate the novelty and creativity of the present application. Utility Model Content

[0005] The purpose of the utility model is to provide a displacement fixture based on PLC and servo motor, which can be suitable for laser engraving application scenarios.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A position changing fixture based on PLC and servo motor, comprising a control box and an actuator;

[0008] The control box includes a programmable controller, a servo controller, a switching power supply, a filter, and an air switch; the programmable controller is electrically connected to the filter; the filter is electrically connected to the air switch; the switching power supply is electrically connected to the servo controller; the servo controller is communicatively connected to the programmable controller;

[0009] The actuator includes a housing, a servo motor and a positioning assembly, wherein the servo motor is arranged inside the housing, the positioning assembly is arranged outside the housing, the positioning assembly is connected to the output shaft of the servo motor, and the positioning assembly is configured to load a workpiece to be processed so that the workpiece rotates under the drive of the servo motor;

[0010] The actuator is connected to the control box through wires, including: the encoder line connector and the power line connector of the servo motor both extend from the inside of the actuator housing to the outside of the housing, the output end connector of the programmable controller and the output end connector of the servo controller both extend from the inside of the control box to the outside of the control box, and the encoder line connector is configured to be electrically connected to the output end connector of the programmable controller through an encoder line, and the power line connector is configured to be electrically connected to the output end connector of the servo controller through a power line.

[0011] Further, based on any one of the above-mentioned technical solutions or a combination of multiple technical solutions, the positioning assembly includes a positioning platform and a positioning head, the positioning platform is connected to the output shaft of the servo motor, and the positioning head is configured to be detachably connected to the positioning platform;

[0012] The positioning components have various specifications, and the positioning heads of positioning components of different specifications are used to load workpieces of different sizes.

[0013] Further, based on any one of the above-mentioned technical solutions or a combination of multiple technical solutions, the positioning platform is provided with more than two guide posts on one side facing the positioning head, and the positioning head is provided with a guide hole plugged with the guide post on one side facing the positioning platform;

[0014] The outer wall of the positioning head is configured to be dampedly matched with the outer wall of the workpiece to be processed.

[0015] Furthermore, based on any one of the technical solutions or a combination of multiple technical solutions described above, the spacing between the guide columns on the positioning platforms of positioning assemblies of different specifications is different, and the outer wall shapes and / or wall sizes of the positioning heads of positioning assemblies of different specifications are different.

[0016] Further, based on any one of the technical solutions or a combination of multiple technical solutions mentioned above, the positioning table and / or the positioning head are provided with a strong magnet; or, the positioning table is provided with a strong magnet, and the positioning head is made of a magnetic material; or, the positioning head is provided with a strong magnet, and the positioning table is made of a magnetic material.

[0017] Further, based on any one of the above-mentioned technical solutions or a combination of multiple technical solutions, the actuator further includes an emergency stop button and a start button;

[0018] The emergency stop button and the start button are both electrically connected to the servo motor, wherein the start button is used to control the servo motor to work or preparatory work, and the emergency stop button is used to control the servo motor to stop working.

[0019] Further, based on any one of the above technical solutions or a combination of multiple technical solutions, the actuator also includes a sensor, which is electrically connected to the programmable controller;

[0020] The sensor is used to sense whether the positioning assembly is loaded with a workpiece.

[0021] Further, based on any one of the technical solutions or a combination of multiple technical solutions mentioned above, the number of the sensors is two, which are respectively arranged on both sides of the positioning component.

[0022] Further, based on any one of the above-mentioned technical solutions or a combination of multiple technical solutions, the control box also includes a handle, a wire outlet, a green light indicator, and a red light indicator;

[0023] The handle is located on the upper side of the control box;

[0024] The outlet is used for the output terminal connector of the programmable controller and the output terminal connector of the servo controller to extend to the outside of the control box;

[0025] The green indicator light and the red indicator light are located on one side of the control box.

[0026] Further, based on any one of the technical solutions or a combination of multiple technical solutions mentioned above, the control box also includes a fan, which is located on a side of the control box that contacts the external air.

[0027] The beneficial effects brought by the technical solution provided by the utility model are as follows:

[0028] The servo motor can be used to drive the positioning component of the fixture to drive the workpiece to be processed to rotate, saving manpower;

[0029] PLC programmable technology is used to control the rotation of the positioning component of the fixture, which is flexible to adjust and can be applied to engraving processing application scenarios such as laser engraving. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 It is a schematic diagram of a laser engraving positioning fixture in the prior art;

[0032] Figure 2 A schematic diagram of the internal layout of a control box of a displacement fixture provided by an exemplary embodiment of the utility model;

[0033] Figure 3 A schematic diagram of a control box of a displacement fixture provided as an exemplary embodiment of the utility model.

[0034] Figure 4 A schematic diagram of an actuator of a displacement fixture provided as an exemplary embodiment of the utility model;

[0035] Figure 5 A partial exploded view of a displacement fixture provided as an exemplary embodiment of the utility model.

[0036] Explanation of the accompanying drawings: 1-control box, 2-actuator, 3-programmable controller, 4-servo controller, 5-switching power supply, 6-filter, 7-air switch, 8-handle, 9-wire outlet, 10-green light indicator, 11-red light indicator, 12-emergency stop button, 13-start button, 14-sensor, 15-positioning table, 16-power line connector, 17-encoder line connector, 18-fan, 19-positioning head, 20-workpiece. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0038] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, device, product or equipment that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0039] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0040] See also Figure 1 , shows a laser engraving positioning fixture in the prior art, the fixture has a simple structure and difficult position adjustment; multiple laser engravings of curved products require multiple sets of fixtures, machines and manpower, which is inefficient and has a relatively high probability of product defects.

[0041] In one embodiment of the present invention, see the attached Figure 2 , provides a laser engraving automatic displacement jig, including a control box 1 and an actuator 2;

[0042] The control box 1 includes a programmable controller 3, a servo controller 4, a switching power supply 5, a filter 6 and an air switch 7; the programmable controller 3 is connected to the filter 6; the filter 6 is connected to the air switch 7; the switching power supply 5 is connected to the servo controller 4; the servo controller 4 is communicatively connected to the programmable controller 3; the actuator 2 is connected to the control box 1 via a connecting line.

[0043] The utility model uses a programmable controller in conjunction with a servo motor to achieve precise displacement of the product. The programmable controller communicates with the servo driver and the laser engraving machine. The servo driver controls the rotation of the servo motor. The accuracy of the servo motor positioning drive is used to achieve mechanized operation and improve efficiency.

[0044] In one embodiment of the present invention, see the attached Figure 3 The control box 1 further includes: a handle 8, a wire outlet 9, a green indicator light 10, and a red indicator light 11. There are two handles 8, which are located on both sides of the upper surface of the control box 1; there is one wire outlet 9, which is located on the upper part of the control box 1, and the wire outlet is used for the output terminal connector of the programmable controller and the output terminal connector of the servo controller to extend to the outside of the control box; the green indicator light 10 and the red indicator light 11 are located on one side of the control box 1, and are used to indicate that the working state of the servo motor is normal working or stopped working.

[0045] In one embodiment of the present invention, the actuator 2 is as follows: Figure 4As shown, the actuator 2 includes a housing, a servo motor, an emergency stop button 12, a start button 13, a sensor 14, and a positioning assembly. The emergency stop button 12 and the start button 13 are both electrically connected to the servo motor, wherein the start button 13 is used to control the servo motor to work or prepare for work, at which time the green light indicator 10 can be controlled to light up, and the emergency stop button 12 is used to control the servo motor to stop working, at which time the red light indicator 11 can be controlled to light up. The servo motor has a conventional power line connector 16 and an encoder line connector 17. The power line connector 16 and the encoder line connector 17 are located on the upper part of the actuator 2; the sensor 14 and the positioning assembly are located on the side of the actuator 2, and the sensor 14 and the positioning assembly are located on the same side of the actuator 2, see the attached Figure 4 There are at least two sensors 14, which are located on both sides of the positioning component respectively.

[0046] In one embodiment of the utility model, the servo motor is arranged inside the shell, the positioning assembly is arranged outside the shell, the positioning assembly is connected to the output shaft of the servo motor, and the positioning assembly is configured to load a workpiece to be processed (not shown) so that the workpiece rotates under the drive of the servo motor; the actuator is connected to the control box through a wire, including: the encoder line connector 17 and the power line connector 16 of the servo motor both extend from the shell of the actuator to the outside of the shell, the output end connector of the programmable controller and the output end connector of the servo controller both extend from the inside of the control box to the outside of the control box, and the encoder line connector 17 is configured to be electrically connected to the output end connector of the programmable controller through an encoder line, and the power line connector 16 is configured to be electrically connected to the output end connector of the servo controller through a power line.

[0047] The positioning assembly includes a positioning platform 15 and a positioning head 19, wherein the positioning platform 15 is connected to the output shaft of the servo motor, and the positioning head 19 is configured to be detachably connected to the positioning platform 15;

[0048] The positioning assembly has various specifications, and the positioning heads 19 of positioning assemblies of different specifications are used to load workpieces of different sizes.

[0049] The positioning platform 15 is provided with more than two guide posts on one side facing the positioning head 19, and the positioning head 19 is provided with a guide hole plugged with the guide posts on one side facing the positioning platform 15; the outer wall of the positioning head 19 is configured to be damped with the outer wall of the workpiece 20 to be processed. The spacing between the guide posts on the positioning platforms 15 of positioning assemblies of different specifications is different, and the outer wall shapes and / or wall sizes of the positioning heads 19 of positioning assemblies of different specifications are different, so as to be damped and nested in workpieces of different shapes or sizes.

[0050] The positioning platform 15 and / or the positioning head 19 are provided with strong magnets; or, the positioning platform 15 is provided with a strong magnet and the positioning head 19 is made of magnetic material; or, the positioning head 19 is provided with a strong magnet and the positioning platform 15 is made of magnetic material. In short, the positioning platform 15 and the positioning head 19 rotate synchronously under the action of magnetic attraction.

[0051] In an embodiment of the present invention, the control box 1 further comprises a fan 18 , and there are at least two fans 18 , which are located on a side of the control box 1 in contact with external air.

[0052] For example, there are two fans, see the attached Figure 2 .

[0053] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0054] The above is only a specific implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A displacement fixture based on PLC and servo motor, characterized in that: include: Control box and actuator; The control box includes a programmable controller, a servo controller, a switching power supply, a filter, and an air switch; the programmable controller is electrically connected to the filter; the filter is electrically connected to the air switch; the switching power supply is electrically connected to the servo controller; the servo controller is communicatively connected to the programmable controller; The actuator includes a housing, a servo motor and a positioning assembly, wherein the servo motor is arranged inside the housing, and the positioning assembly is arranged outside the housing, and the positioning assembly is connected to the output shaft of the servo motor, and the positioning assembly is configured to load a workpiece to be processed so that the workpiece rotates under the drive of the servo motor; the positioning assembly includes a positioning table and a positioning head, the positioning table is connected to the output shaft of the servo motor, and the positioning head is configured to be detachably connected to the positioning table, more than two guide columns are provided on a side of the positioning table facing the positioning head, and a guide hole for plugging and matching with the guide column is provided on a side of the positioning head facing the positioning table, and the outer wall of the positioning head is configured to be damping-matched with the outer wall of the workpiece to be processed; The actuator is connected to the control box through wires, including: the encoder line connector and the power line connector of the servo motor both extend from the inside of the actuator housing to the outside of the housing, the output end connector of the programmable controller and the output end connector of the servo controller both extend from the inside of the control box to the outside of the control box, and the encoder line connector is configured to be electrically connected to the output end connector of the programmable controller through an encoder line, and the power line connector is configured to be electrically connected to the output end connector of the servo controller through a power line.

2. The position changing fixture based on PLC and servo motor according to claim 1 is characterized in that: The positioning components have various specifications, and the positioning heads of positioning components of different specifications are used to load workpieces of different sizes.

3. The position changing fixture based on PLC and servo motor according to claim 1 is characterized in that: The distances between the guide posts on the positioning platforms of positioning assemblies of different specifications are different, and the outer wall shapes and / or wall sizes of the positioning heads of positioning assemblies of different specifications are different.

4. The position changing fixture based on PLC and servo motor according to claim 1 is characterized in that: The positioning platform and / or the positioning head are provided with a strong magnet; or, the positioning platform is provided with a strong magnet and the positioning head is made of a magnetic material; or, the positioning head is provided with a strong magnet and the positioning platform is made of a magnetic material.

5. The position changing fixture based on PLC and servo motor according to claim 1 is characterized in that: The actuator also includes an emergency stop button and a start button; The emergency stop button and the start button are both electrically connected to the servo motor, wherein the start button is used to control the servo motor to work or preparatory work, and the emergency stop button is used to control the servo motor to stop working.

6. The position changing fixture based on PLC and servo motor according to claim 1 is characterized in that: The actuator also includes a sensor, which is electrically connected to the programmable controller; The sensor is used to sense whether the positioning assembly is loaded with a workpiece.

7. The position changing fixture based on PLC and servo motor according to claim 6 is characterized in that: The number of the sensors is two, and they are respectively arranged on both sides of the positioning component.

8. The position changing fixture based on PLC and servo motor according to claim 1 is characterized in that: The control box also includes a handle, a wire outlet, a green indicator light, and a red indicator light; The handle is located on the upper side of the control box; The outlet is used for the output terminal connector of the programmable controller and the output terminal connector of the servo controller to extend to the outside of the control box; The green indicator light and the red indicator light are located on one side of the control box.

9. The position changing fixture based on PLC and servo motor according to claim 1 is characterized in that: The control box further includes a fan located at a side of the control box in contact with external air.

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