Double-station automatic screw machine

Abstract

The utility model discloses a double-station automatic screw machine. The screw machine comprises a truss manipulator and a workpiece positioning plate; the truss manipulator comprises a three-axis guide rail device and a locking device, and the locking device is in sliding connection with the three-axis guide rail device through a base; the three-axis guide rail device comprises an X-axis guide rail, a Y-axis guide rail and a Z-axis guide rail, the X-axis guide rail is arranged on the truss, the Y-axis guide rail is arranged on the working plate, and the Z-axis guide rail is in sliding connection with the X-axis guide rail; a locking device is connected to the Z-axis guide rail and is in sliding connection with the Z-axis guide rail; the workpiece positioning plate is in sliding connection with the Y-axis guide rail and is used for driving a workpiece to move on the Y-axis guide rail; the screw machine comprises the two sets of truss manipulators which are symmetrical on the working plate, and the two sets of truss manipulators work independently, so that the working efficiency of the screw machine can be improved. The three-axis guide rail device moves in all directions relative to a workpiece so as to accurately position the position of a screw hole.

Description

TECHNICAL FIELD

[0001] The utility model belongs to screw machine technical field, especially relates to a double-station automatic screw machine. BACKGROUND

[0002] Screw machine, especially full-automatic screw machine, is an important equipment in the field of intelligent manufacturing, has remarkable technical background and application value, and is widely applied to various industrial production fields requiring screw fastening.

[0003] The application field of full-automatic screw machine is extremely wide, and it is mainly applied to the automobile, electronic, household appliance, communication and other industries.For example, automobile manufacturing: in the assembly of automobile engine, the automatic screw machine can efficiently complete the locking work of a large number of screws.Electronic device manufacturing: in the assembly process of mobile phones, computers and other electronic products, the automatic screw machine can ensure the precision and efficiency of screw locking, meet the demand of product miniaturization and refinement, and household appliance manufacturing: in the assembly of household appliances, the efficient tightening capacity of the automatic screw machine greatly shortens the assembly time of the product and improves the production efficiency.

[0004] However, at present, the equipment for sucking and locking the combination of spring washers and flat washers has poor stability, the screw sucking is easy to be inclined due to inaccurate positioning, thereby causing poor screw locking, and further affecting the installation efficiency of the screw. INVENTION CONTENTS

[0005] The application purpose of the utility model is to provide a double-station automatic screw machine aiming at the above-mentioned problems, and to improve the slow working efficiency of the existing screw machine, and the inaccurate positioning of the screw and the workpiece.

[0006] The technical scheme adopted by the utility model is as follows: a double-station automatic screw machine, the screw machine is arranged on a workbench, the workbench is the working area of the screw machine, a truss is arranged on the workbench, and the screw machine comprises:

[0007] The truss mechanical arm comprises a three-axis guide rail device and a locking device, the locking device is slidably connected with the three-axis guide rail device through a base, and is used for moving on the three-axis guide rail device;

[0008] The three-axis guide rail device comprises an X-axis guide rail, a Y-axis guide rail and a Z-axis guide rail, the X-axis guide rail is arranged on the truss, the Y-axis guide rail is arranged on the workbench, and the Z-axis guide rail is slidably connected with the X-axis guide rail; the locking device is connected with the Z-axis guide rail, and the locking device is slidably connected with the Z-axis guide rail;

[0009] The workpiece positioning plate is used for loading the workpiece, the workpiece positioning plate is slidably connected with the Y-axis guide rail, and the workpiece positioning plate is used for driving the workpiece to move on the Y-axis guide rail; the locking device is used for loading the screw on the workpiece;

[0010] The screw machine comprises two sets of truss manipulators symmetrically arranged on the workbench, and the two sets of truss manipulators work independently.

[0011] Due to the above structure, the three-axis guide rail device is used to move relative to the workpiece to accurately position the screw hole, and the manipulator is used to pick up and install the screw to accurately position the screw; and the double-station screw machine is used to make the two sets of truss manipulators work independently to improve the installation efficiency of the screw machine.

[0012] Further, in order to accurately position and move the screw, the locking device comprises a laser displacement sensor and an intelligent electric screwdriver, the laser displacement sensor is used to provide the actual height of the locking device after locking the screw to judge the locking quality of the screw, and the intelligent electric screwdriver is provided with a screw suction nozzle for adsorbing and positioning the screw.

[0013] Further, in order to accurately move the locking device, a base is arranged on the Z-axis guide rail, the base is in sliding connection with the Z-axis guide rail, and the locking device is arranged on the base and moves on the Z-axis guide rail through the base.

[0014] Further, in order to automatically provide the screw to the screw machine, a feeding slide rail is arranged on the workbench, the feeding slide rail is used to convey a screw feeder, the screw feeder is in sliding connection with the feeding slide rail, the feeding slide rail is arranged parallel to the Y-axis guide rail, and the feeding slide rail is arranged close to the Y-axis guide rail.

[0015] Further, in order to facilitate storage and picking of the screw, the screw feeder comprises a screw placing box and a screw bin, a screw conveying channel is arranged in the screw placing box and connected with the screw bin, and the screw in the screw placing box is conveyed into the screw bin through the conveying channel.

[0016] Further, in order to facilitate picking of the screw, a positioning screw hole is arranged on the screw bin, the screw conveying channel is connected with the positioning screw hole, and the screw in the screw placing box is conveyed into the positioning screw hole connected with the end of the screw conveying channel through the screw conveying channel.

[0017] Further, in order to realize automatic feeding of the screw machine, a feeding channel is further arranged on the screw machine, the end of the feeding channel is connected with the screw bin, and the feeding channel is used to convey the screw to the screw bin.

[0018] Further, the screw bin is switched through a position switching cylinder, the position switching cylinder and the screw feeder are arranged on the feeding slide rail, and the position switching cylinder and the screw feeder move synchronously.

[0019] Further, in order to move the screw in a small range, the screw suction nozzle is connected with the intelligent electric screwdriver through a suction nozzle floating mechanism, which is used to drive the screw suction nozzle to move in the direction parallel to the Z-axis guide rail.

[0020] Further, in order to facilitate the control of the screw machine, the operation panel is further arranged on the operation board, and the operation panel comprises two sets of operation buttons, which are used to control the components of the screw machine.

[0021] In summary, due to the adoption of the above technical scheme, the screw machine has the following beneficial effects:

[0022] 1. The three-axis guide rail device is used to move relative to the workpiece in all directions to accurately position the screw hole position, and the mechanical hand is used to pick up and install the screw, so that the screw position can be accurately positioned; and the double-station screw machine is arranged, and the two sets of truss mechanical hands independently work, so that the working efficiency of the screw machine can be improved.

[0023] 2. The laser displacement sensor is arranged on the locking device to check the locking quality of the screw, and the screw suction nozzle on the intelligent electric screwdriver is used to install and pick up the screw, so that the position of the screw can be accurately positioned, and the screw machine can install the screw more accurately. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0025] Figure 1 It is a schematic diagram of the overall structure of the screw machine of the present application.

[0026] Figure 2 It is a schematic diagram of the truss mechanical hand structure of the present application.

[0027] Figure 3 It is a schematic diagram of the locking device structure of the present application.

[0028] Figure 4 It is a schematic diagram of the base position structure of the present application.

[0029] Figure 5 It is a schematic diagram of the feeding slide rail of the present application.

[0030] Figure 6 It is a schematic diagram of the screw feeder structure of the present application.

[0031] Figure 7The utility model discloses a feeding channel structure schematic view.

[0032] Figure 8 The utility model discloses a support structure schematic view.

[0033] Reference Signs: 1, operation board;2, truss;3, truss manipulator;4, lock device;5, base;6, workpiece positioning plate;7, feeding slide rail;8, screw feeder;9, screw placing box;10, screw bin;11, position switching cylinder;12, feeding channel;13, operation panel;14, support;

[0034] 301, X-axis guide rail;302, Y-axis guide rail;303, Z-axis guide rail;

[0035] 401, laser displacement sensor;402, intelligent electric screwdriver;403, screw suction nozzle;404, suction nozzle floating mechanism;

[0036] 901, opening. DETAILED DESCRIPTION

[0037] The utility model will be described in detail below in combination with the drawings.

[0038] In order to make the utility model's purpose, technical scheme and advantage more clear and obvious, the following combines the drawing and example, and this utility model carries out further detailed explanation. It should be understood that the specific example described here is only used to explain the utility model, and is not used to limit the utility model.

[0039] As Figure 1 The utility model discloses a double position automatic screw machine, including symmetrical two sets of devices, the device includes truss manipulator 3, feeding slide rail 7, screw feeder 8 and lock device 4, two sets of devices independent operation, also can pass through the control device independent control each device, and two sets of devices set up are set up on operation board through truss 2.

[0040] The device specifically includes:

[0041] Truss manipulator 3 includes three-axis guide rail device and lock device 4, and lock device 4 is slidably connected with three-axis guide rail device through base 5, is used to move on three-axis guide rail device, and truss manipulator 3 is used to provide running track for screw and take and install screw through manipulator.

[0042] Three-axis guide rail device includes X-axis guide rail 301, Y-axis guide rail 302 and Z-axis guide rail 303, the X-axis guide rail 301 is set up on truss 2, the Y-axis guide rail 302 is set up on operation board, and the Z-axis guide rail 303 is slidably connected with X-axis guide rail 301;Lock device 4 is connected on the Z-axis guide rail 303, and the lock device 4 is slidably connected with Z-axis guide rail 303;

[0043] The workpiece positioning plate 6 is used to load the workpiece. The workpiece positioning plate 6 is slidably connected to the Y-axis guide rail 302. The workpiece positioning plate 6 is used to drive the workpiece to move on the Y-axis guide rail 302. The locking device 4 is used to load the screw onto the workpiece.

[0044] The X-axis guide rail 301 and the Z-axis guide rail 303 are used to provide a moving track in the XOZ plane (O is the origin of the coordinate system) for the locking device 4, while the Y-axis guide rail 302 provides a moving track perpendicular to the XOZ plane for the workpiece positioning plate 6, so that the workpiece positioning plate 6 can be brought close to and positioned with the screw.

[0045] The working process is as follows: the workpiece is placed on the workpiece positioning plate 6 and reaches the designated position through the Y-axis guide rail 302. The workpiece positioning plate 6 is limited by the limiter. Then, the fastening device 4 moves on the X-axis guide rail 301 and the Z-axis guide rail 303. The height of the fastened screw is measured by the laser displacement sensor 401. The screw suction nozzle 403 is moved vertically by the suction nozzle floating mechanism 404, thereby installing the screw. After installation, the workpiece is conveyed out of the screw machine through the workpiece positioning plate 6, and the next workpiece continues the above steps.

[0046] The steps for the gantry robot 3 to pick up the screw are as follows:

[0047] The screw feeder 8 supplies screws to the screw machine. The screw feeder 8 moves to the operating range of the gantry robot 3 via the feeding slide rail 7. The gantry robot 3 picks up the screws from the screw feeder 8, thus completing the automated screw picking.

[0048] Example 1

[0049] like Figures 1-2 As shown, one embodiment of this utility model is a dual-station automatic screw machine, wherein the screw machine is set on a working plate 1, the working plate 1 is the working area of ​​the screw machine, and a truss 2 is provided on the working plate 1. The screw machine includes two sets of truss manipulators 3 symmetrically on the working plate 1, and the two sets of truss manipulators 3 work independently.

[0050] The screw-moving parts of the screw-making machine include:

[0051] The truss robot 3 includes a three-axis guide rail device and a locking device 4. The locking device 4 is slidably connected to the three-axis guide rail device via a base 5 and is used to move on the three-axis guide rail device.

[0052] The three-axis guide rail device comprises an X-axis guide rail 301, a Y-axis guide rail 302 and a Z-axis guide rail 303, the X-axis guide rail 301 is arranged on the truss 2, the Y-axis guide rail 302 is arranged on the workbench 1, and the Z-axis guide rail 303 is in sliding connection with the X-axis guide rail 301; the Z-axis guide rail 303 is connected with a locking device 4, and the locking device 4 is in sliding connection with the Z-axis guide rail 303.

[0053] A workpiece positioning plate 6 is arranged on the Y-axis guide rail 302 and is used for loading workpieces, and the workpiece positioning plate 6 is used for driving the workpieces to move on the Y-axis guide rail 302; the locking device 4 is used for loading screws on the workpieces; one end of the Y-axis guide rail 302 can be connected with a workpiece production line, and the workpieces directly enter the screw machine through the Y-axis guide rail 302 for installation, so that the production efficiency is improved.

[0054] The mechanical hand is built by using a standard ball screw linear module, so that the accuracy of repeated positioning is ensured; the composite motion of the three-axis guide rails realizes the switching of the positions of the workpieces and the screw locking, so that the screws and the workpieces are accurately positioned, and the two sets of truss mechanical hands 3 independently work, the working efficiency of the screw machine is improved, and the two sides do not interfere with each other, so that different workpieces and screws can be installed.

[0055] Embodiment 2

[0056] As shown in Figures 3-4 Another embodiment of the utility model is that the locking device 4 comprises a laser displacement sensor 401 and an intelligent electric screwdriver 402; a screw suction nozzle 403 is arranged on the intelligent electric screwdriver 402, the screw suction nozzle 403 is driven by a suction nozzle floating mechanism 404 to move in the vertical direction, so that the screw is installed, and the screw suction nozzle 403 is used for connecting the screw; the laser displacement sensor 401 is used for detecting the height of the completed screw locking, so as to feedback the locking quality.

[0057] The Z-axis guide rail 303 is provided with a base 5, the base 5 is in sliding connection with the Z-axis guide rail 303; the locking device 4 is arranged on the base 5 and is driven by the base 5 to move on the Z-axis guide rail 303.

[0058] The X-axis guide rail 301, the Y-axis guide rail 302 and the Z-axis guide rail 303 are all provided with the base 5, the base 5 on the X-axis guide rail 301 is used for connecting the Z-axis guide rail 303, the base 5 on the Y-axis guide rail 302 is used for connecting the workpiece positioning plate 6, and the base 5 on the Z-axis guide rail 303 is used for connecting the locking device 4.

[0059] The locking device 4 further comprises a vacuum degree detection sensor, a vacuum filter, a vacuum generator and a bit pressing air cylinder; the vacuum degree detection sensor realizes accurate measurement and control of the vacuum degree by monitoring the change of the environmental gas pressure, thereby effectively improving the production efficiency and quality and ensuring the stability and consistency of the screw installation; the vacuum filter is installed between the vacuum generator and the screw suction nozzle 403 and is used for preventing system pollution and ensuring the normal operation of the system under negative pressure environment; the bit pressing air cylinder drives the piston to move by compressed air to provide power for the locking device 4, thereby realizing the limiting and installation of the screw by the screw suction nozzle 403; meanwhile, the intelligent electric bit 402 can provide precise control of torque, rotation angle and the like, and can effectively monitor the problems such as screw floating, missing locking and slipping teeth.

[0060] Embodiment 3

[0061] As Figures 5-6 shown, another embodiment of the utility model is that the workboard 1 is equipped with a feeding slide rail 7, the feeding slide rail 7 is used to transport a screw feeder 8, the screw feeder 8 is slidably connected with the feeding slide rail 7, the feeding slide rail 7 is parallel to the Y-axis guide rail 302 and is arranged close to the Y-axis guide rail 302.

[0062] In this embodiment, the feeding slide rail 7 is provided with two feeding slide rails 7, and the two feeding slide rails 7 are adjacent, the feeding slide rail 7 is arranged between the two Y-axis guide rails 302, and the feeding slide rail 7 is parallel to the Y-axis guide rail 302 and is spaced apart by a certain distance; a plurality of screw feeders 8 are arranged on the feeding slide rail 7.

[0063] It can be referred that the two feeding slide rails 7 can transport different screws, when it is needed to switch the types of screws, the feeding slide rail 7 can be switched by the stepping motor (not shown in the figure) below the screw bin 10, thereby realizing the feeding of different screws.

[0064] The screw feeder 8 comprises a screw placing box 9 and a screw bin 10, a screw conveying channel is arranged in the screw placing box 9 and is connected with the screw bin 10, and the screw in the screw placing box 9 enters the screw bin 10 through the conveying channel.

[0065] The screw bin 10 is arranged on one side close to the Y-axis guide rail 302, and the screw placing box 9 is arranged on the other side away from the Y-axis guide rail 302, and the screw placing boxes 9 on the two Y-axis guide rails 302 are arranged adjacently.

[0066] The screw bin 10 is provided with a positioning screw hole, the screw conveying channel is connected with the positioning screw hole, the screw in the screw placing box 9 is conveyed to the positioning screw hole connected with the end of the screw conveying channel by the screw conveying channel, and the screw bin 10 is switched by the position switching air cylinder 11 to realize the feeding of different screws.

[0067] The screw is switched and supplemented quickly by switching the screw in the screw placing box 9 into the positioning screw hole on the screw bin 10 through the position switching cylinder 11; wherein the screw bin 10 is provided as a thickened screw bin 10, which is used for increasing the screw limiting contact area, so as to reduce the screw skew degree.

[0068] The automatic feeding of the screw machine can be realized by setting the feeding slide rail 7 and the screw feeder 8, the automation degree of the screw machine is improved, and the work efficiency is improved.

[0069] Embodiment 4

[0070] As shown in Figure 7 Another embodiment of the utility model is that, in order to realize the full-automatic feeding of the screw, the screw machine is further provided with a feeding channel 12, the feeding channel 12 is connected with the opening 901 at the end, and the feeding channel 12 is used for conveying the screw into the screw placing box 9. And the opening 901 is arranged on the screw placing box 9, and the opening 901 is used for putting the screw into the screw placing box 9.

[0071] The screw is put into the feeding channel 12, and the putting-in mode can be manual putting-in or mechanical arm grabbing and putting-in, etc., which is set according to the actual use requirement. Then the screw is conveyed into the screw placing box 9 through the feeding channel 12, and enters the screw placing box 9 through the opening 901 on the screw placing box 9. The screw in the screw placing box 9 is conveyed into the positioning screw hole connected with the end of the screw conveying channel through the screw conveying channel. And the screw bin 10 is rotated through the position switching cylinder 11, and then the screw is taken by the locking device 4. Thus, the full-automatic feeding and installation of the screw are realized, and the work efficiency of the screw machine is improved.

[0072] Embodiment 5

[0073] As shown in Figure 8 Another embodiment of the utility model is that the screw machine of the embodiment is arranged on the electric control cabinet, and the electric control cabinet is provided with a support 14, and the support 14 is used for protecting the screw machine and preventing the operator from being hurt by mistake when the screw machine works.

[0074] The operation panel 13 is further arranged on the operation board 1, and the operation panel 13 includes two sets of operation buttons. The operation panel 13 is used for controlling each component of the screw machine, and each component can be controlled individually.

[0075] Thus, by arranging multiple sets of screw machine equipment, multiple workpieces can be processed simultaneously, the work efficiency of the screw machine is improved, and the production is improved.

[0076] Embodiment 6

[0077] On the basis of the foregoing embodiment, the utility model still can adopt as follows setting mode, in order to be able to handle multiple workpieces and screw installation simultaneously, can set multiple truss mechanical hands 3 on the operation board 1, and independently carry out the positioning and installation of screw, and its specific quantity is set according to actual use needs.

[0078] The above merely describes the preferred embodiments of the utility model and is not intended to limit the utility model, and any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A double-station automatic screw machine, the screw machine being provided on a workboard, the workboard being a work area of the screw machine, the workboard being provided with a truss, characterized in that, The screw machine comprises: The truss manipulator comprises a three-axis guide rail device and a locking device, and the locking device is slidably connected to the three-axis guide rail device through a base and is used to move on the three-axis guide rail device; The three-axis guide rail device comprises an X-axis guide rail, a Y-axis guide rail and a Z-axis guide rail, the X-axis guide rail is arranged on a truss, the Y-axis guide rail is arranged on a workbench, and the Z-axis guide rail is slidably connected to the X-axis guide rail; the locking device is connected to the Z-axis guide rail, and the locking device is slidably connected to the Z-axis guide rail; A workpiece positioning plate is arranged on the Y-axis guide rail and is used to drive the workpiece to move on the Y-axis guide rail; the locking device is used to load the screw on the workpiece; The screw machine comprises two sets of truss manipulators arranged symmetrically on the workbench, and the two sets of truss manipulators work independently.

2. The dual station automatic screw machine of claim 1, wherein, The locking device comprises a laser displacement sensor and an intelligent electric screwdriver, the laser displacement sensor is used to provide the actual height of the screw after locking of the locking device, and the intelligent electric screwdriver is provided with a screw suction nozzle used for adsorbing and positioning the screw.

3. The dual station automatic screw machine of claim 1, wherein, The Z-axis guide rail is provided with a base slidably connected to the Z-axis guide rail; the locking device is arranged on the base and is driven by the base to move on the Z-axis guide rail.

4. The dual station automatic screw machine of claim 1 wherein, The workbench is provided with a feeding slide rail used for conveying a screw feeder, the screw feeder is slidably connected to the feeding slide rail; the feeding slide rail is arranged parallel to the Y-axis guide rail and close to the Y-axis guide rail.

5. A dual station automatic screw machine according to claim 4 wherein, The screw feeder comprises a screw placing box and a screw bin, the screw placing box is provided with a screw conveying channel connected to the screw bin, and the screw in the screw placing box is conveyed into the screw bin through the conveying channel.

6. A dual station automatic screw machine according to claim 5 wherein, The screw bin is provided with a positioning screw hole connected to the screw conveying channel, and the screw in the screw placing box is conveyed into the positioning screw hole connected to the end of the screw conveying channel.

7. A dual station automatic screw machine according to claim 6 wherein, The screw bin is switched by a position switching cylinder, and the position switching cylinder and the screw feeder are arranged on the feeding slide rail and move synchronously.

8. A dual station automatic screw machine according to claim 7, wherein, The screw machine is further provided with an inlet channel, the inlet channel is connected to the screw bin at the end, and the inlet channel is used to convey the screw to the screw bin.

9. The dual station automatic screw machine of claim 2 wherein, The screw suction nozzle is connected to the intelligent electric screwdriver through a suction nozzle floating mechanism, and the suction nozzle floating mechanism is used to drive the screw suction nozzle to move in a direction parallel to the Z-axis guide rail.

10. The dual station automatic screw machine of claim 1 wherein, The workbench is further provided with an operation panel comprising two sets of operation buttons, and the operation panel is used to control the components of the screw machine.

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