Table type three-axis automatic screw locking machine

Abstract

The utility model discloses a table type three-axis automatic screw locking machine which comprises a workbench, a panel, a screw arranging machine, an X-axis moving mechanism and a Y-axis moving mechanism. A Z-axis moving mechanism is arranged on the X-axis moving mechanism, an electric screwdriver is arranged on the Z-axis moving mechanism, a vacuum screw guiding mechanism is arranged at the end of the electric screwdriver, and a positioning jig is arranged on the Y-axis moving mechanism. The Y-axis moving mechanism drives the positioning jig to move a workpiece, the X-axis moving mechanism drives the Z-axis moving mechanism to move, the vacuum screw guiding mechanism moves to the position above the screw sucking position of the screw arranging machine to suck screws, the Z-axis moving mechanism ascends, and meanwhile the X-axis moving mechanism drives the sucked screws to move to the locking point position of the workpiece. And the electric screw driver is rotated and started to lock the screw to the hole site. The automatic screw sucking and locking device is reasonable in design, simple in structure and capable of achieving automatic screw sucking and locking, effectively improves the screw locking efficiency and reduces the product assembling cost.

Description

Technical Field

[0001] The utility model relates to the technical field of screw assembly, and more specifically, particularly relates to a table-type three-axis automatic screw locking machine. Background Art

[0002] In the product development of the 3C industry, mobile phones and tablet electronic products require a large number of tiny screws for assembly. Due to the small size of the screws, manual assembly is time-consuming and labor-intensive, and fatigue is easy to cause mistakes after long hours of work, which greatly increases the assembly cost of the product and the overall assembly efficiency is low. In addition, due to the large number of specifications of small-sized screws, the screws need to be arranged and placed in order, which is easy to make mistakes during manual operation and lead to the selection of the wrong screws. In addition, due to the difference in torque output, the manual locking effect of the screws is not ideal, and there may even be problems with the screws slipping or not being tightened. Utility Model Content

[0003] The utility model provides a desktop three-axis automatic screw locking machine to solve the problems raised in the above background technology. To achieve the above purpose, the utility model provides the following technical solutions: a desktop three-axis automatic screw locking machine, including a workbench, the workbench is provided with a control panel, a screw arranging machine, an X-axis moving mechanism and a Y-axis moving mechanism; the X-axis moving mechanism is provided with a Z-axis moving mechanism, the Z-axis moving mechanism is provided with an electric screwdriver, the end of the electric screwdriver is provided with a vacuum screw guide mechanism, the vacuum screw guide mechanism is connected to a vacuum extraction device; the Y-axis moving mechanism is provided with a positioning fixture.

[0004] Preferably, the vacuum screw guide mechanism includes a connecting part and a suction nozzle, and a positioning bearing and a magnetic ring are provided in the connecting part; the suction nozzle is arranged at the bottom of the connecting part, and a vacuum chamber is provided in the suction nozzle, and a vacuum connector is provided on the outer wall of the suction nozzle, one end of the vacuum connector is connected to the vacuum chamber, and the other end is connected to a vacuum pumping device through a vacuum tube; a centering chrome is provided in the vacuum chamber, and a plurality of grooves are provided on the outer surface of the centering chrome; the lower part of the vacuum chamber is a screw adsorption chamber, and the groove is connected to the screw adsorption chamber.

[0005] Preferably, the number of the grooves is three, and the three grooves are arranged at equal intervals on the surface of the centering chrome; the cross-section of the groove is a semicircular structure.

[0006] Preferably, the Z-axis moving mechanism includes a lifting seat, a slide groove, a slider seat, a connecting seat and a cylinder; the lifting seat is connected to the X-axis moving mechanism, the slide groove is arranged on the lifting seat, and the slider seat is slidably arranged on the slide groove; the connecting seat is arranged on the slider seat, and is used to connect the electric screwdriver and the vacuum screw guide mechanism; the cylinder is arranged on the top of the lifting seat, and its piston rod is connected to the slider seat.

[0007] Preferably, a first buffer module and a second buffer module are provided on the connecting base, the electric screwdriver is connected to the connecting base via the first buffer module, and the vacuum screw guide mechanism is connected to the connecting base via the second buffer module.

[0008] Preferably, the first buffer module includes a side plate, a top plate, a linear slide rail, a first slider, a first movable plate, a buffer guide rod and a first spring; the side plate is connected to the connecting seat, the top plate is arranged on the top of the side plate, the linear slide rail is arranged on the side plate, and the first slider is slidably arranged on the linear slide rail; the first movable plate is connected to the first slider, and the electric screwdriver is arranged on the first movable plate; the first spring is sleeved on the buffer guide rod, one end of which is in contact with the top plate, and the other end is in contact with the first movable plate; the second buffer The module includes a second slider, a second movable plate, a limit block and a second spring. The second slider is slidably arranged on the linear slide rail. The second movable plate is connected to the second slider. The vacuum screw guide mechanism is arranged on the second movable plate. The limit block is fixedly installed on the side plate. One end of the buffer guide rod is connected to the second movable plate, and the other end passes through the first movable plate, the top plate and the top of the lifting seat in sequence. The second spring is sleeved on the buffer guide rod, one end of which abuts against the second movable plate, and the other end abuts against the limit block.

[0009] Preferably, the X-axis moving mechanism includes a gantry and an X-axis translation module, and the X-axis translation module is arranged on the crossbeam of the gantry; a Z-axis drag chain frame is also arranged on the top of the gantry, and the Z-axis drag chain frame is connected to the Z-axis moving mechanism.

[0010] Preferably, the positioning fixture includes a sealing seat, a suction cup assembly and a workpiece clamp; the sealing seat is connected to the Y-axis moving mechanism, and a vacuum connector is provided on its side; the sealing seat includes a base plate and a cover plate, a cavity is provided between the base plate and the cover plate, and the cavity is connected to the vacuum connector; the suction cup assembly is fixedly connected to the base plate, and its opening extends from the top of the cover plate, and the suction cup assembly is connected to the cavity; the workpiece clamp is detachably connected to the cover plate.

[0011] Preferably, an auxiliary positioning device is further included, and the auxiliary positioning device is arranged in coordination with the positioning fixture.

[0012] Preferably, the auxiliary positioning device is a CCD visual positioning device.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model drives the positioning fixture to move the workpiece through the Y-axis moving mechanism, and at the same time the X-axis moving mechanism drives the Z-axis moving mechanism to move, so that the vacuum screw guide mechanism moves to the position above the screw arrangement machine to absorb the screw, the Z-axis moving mechanism drives the vacuum screw guide mechanism to descend to absorb the screw, the Z-axis moving mechanism rises and at the same time the X-axis moving mechanism moves the sucked screw to the locking point of the workpiece, the Z-axis moving mechanism descends and at the same time the electric screwdriver rotates and starts to lock the screw to the hole position, and automatically stops after reaching the set torque, and at the same time the Z-axis moving mechanism is lifted and moved to absorb the next screw, and the operation is cyclic. The utility model has a reasonable design and a simple structure, can realize automatic screw absorption and screw locking, effectively improves the screw locking efficiency, reduces the assembly cost of the product, and the locking torque is controllable, the locking effect is better, the overall operation is stable, and the operating cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural diagram of a desktop three-axis automatic screw locking machine according to an embodiment of the utility model;

[0015] Figure 2 Another angle structural diagram of the table-type three-axis automatic screw locking machine according to the embodiment of the utility model;

[0016] Figure 3 This is a front view of a desktop three-axis automatic screw locking machine according to an embodiment of the utility model;

[0017] Figure 4 A side view of a desktop three-axis automatic screw locking machine according to an embodiment of the utility model;

[0018] Figure 5 It is a schematic diagram of the installation structure of the Z-axis moving mechanism, electric screwdriver and vacuum screw guide mechanism of the desktop three-axis automatic screw locking machine of the embodiment of the utility model;

[0019] Figure 6 It is a structural schematic diagram of the vacuum screw guide mechanism of the desktop three-axis automatic screw locking machine according to the embodiment of the utility model;

[0020] Figure 7 A cross-sectional view of a vacuum screw guide mechanism of a desktop three-axis automatic screw locking machine according to an embodiment of the utility model;

[0021] Figure 8 It is a structural schematic diagram of a positioning fixture of a desktop three-axis automatic screw locking machine according to an embodiment of the utility model;

[0022] Fig. 9 An exploded view of a positioning fixture of a desktop three-axis automatic screw locking machine according to an embodiment of the utility model;

[0023] exist Figures 1 to 9 In the figure, the corresponding relationship between the names of the components and the numbers of the drawings is as follows:

[0024] 1--Workbench, 2--Control panel, 3--Screw arrangement machine, 4--X-axis moving mechanism, 41--Gantry, 42--X-axis translation module, 43--Z-axis drag chain rack, 5--Y-axis moving mechanism, 6--Z-axis moving mechanism, 61--Lifting seat, 62--Slideway, 63--Slider seat, 64--Connecting seat, 65--Cylinder, 66--First buffer module, 661--Side plate, 662--Top plate, 663--Linear slide rail, 664--First slider, 665--First movable plate, 666--Buffer guide rod, 667-- The first spring, 67--the second buffer module, 671--the second slider, 672--the second movable plate, 673--the limit block, 674--the second spring, 7--the electric screwdriver, 8--the vacuum screw guide mechanism, 81--the connecting part, 82--the suction nozzle, 83--the positioning bearing, 84--the magnetic ring, 85--the vacuum connecting head, 86--the centering chrome, 861--the groove, 9--the positioning fixture, 91--the sealing seat, 911--the bottom plate, 912--the cover plate, 92--the suction cup assembly, 93--the workpiece fixture, 94--the vacuum connecting piece. DETAILED DESCRIPTION

[0025] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0026] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Please refer to Figures 1 to 9 The utility model provides a desktop three-axis automatic screw locking machine, including a workbench 1, on which a control panel 2, a screw arranging machine 3, an X-axis moving mechanism 4 and a Y-axis moving mechanism 5 are provided; the X-axis moving mechanism 4 is provided with a Z-axis moving mechanism 6, and the Z-axis moving mechanism 6 is provided with an electric screwdriver 7, and a vacuum screw guide mechanism 8 is provided at the end of the electric screwdriver 7, and the vacuum screw guide mechanism 8 is connected to a vacuum extraction device; the Y-axis moving mechanism 5 is provided with a positioning fixture 9.

[0029] In the embodiment of the utility model, the desktop three-axis automatic screw locking machine is mainly used to replace manual work, reduce the intensity of manual labor, improve production efficiency, and the uniformity of the torque output of screw locking. The product is placed on the positioning fixture 9, the screw arrangement machine 3 arranges the screws and sorts them one by one, and sucks the sorted screws by vacuum suction. The electric screwdriver 7 rotates the screws to the corresponding position of the product through the set speed torque. The operation of this embodiment is simple, and multiple groups of buttons are set on the control panel 2, including a power switch, an emergency stop switch, and a program start switch. After the program is pre-set, the screw locking operation can be started quickly and conveniently.

[0030] The working process of this embodiment is as follows:

[0031] First, manually operate the power switch on the control panel 2, and manually place the product in the positioning fixture 9 according to the direction; then press the program start switch, the Y-axis moving mechanism 5 drives the positioning fixture 9 to move to the first point of locking the screw, and at the same time the X-axis moving mechanism 4 drives the Z-axis moving mechanism 6 to move to the top of the screw absorbing position of the screw arrangement machine 3, so that the vacuum screw guide mechanism 8 is aligned with the screw to be taken; then, the Z-axis moving mechanism 6 drives the vacuum screw guide mechanism 8 to descend to absorb the screw; after the screw is absorbed, the Z-axis moving mechanism 6 rises and at the same time the X-axis moving mechanism 4 moves the sucked screw to the set locking point, the Z-axis moving mechanism 6 descends and at the same time the electric screwdriver 7 rotates and starts to lock the screw to the hole position, and automatically stops after reaching the set torque; at the same time, the Z-axis moving mechanism 6 lifts and moves to absorb the next screw, and repeats this action until the last screw of the product is locked, the Y-axis returns to the origin, the locked product is manually taken out, and then the screw product to be locked is put in, and the operation is cyclic.

[0032] This embodiment has a torque setting function, and the torque is adjusted according to different products. The torque output during the working process is stable, and the occurrence of screw slippage or unlocking is effectively reduced.

[0033] Preferably, the vacuum screw guide mechanism 8 includes a connecting part 81 and a suction nozzle 82, and a positioning bearing 83 and a magnetic ring 84 are provided in the connecting part 81; the suction nozzle 82 is arranged at the bottom of the connecting part 81, and a vacuum chamber is provided in the suction nozzle 82, and a vacuum connector 85 is provided on the outer wall of the suction nozzle 82, one end of the vacuum connector 85 is connected to the vacuum chamber, and the other end is connected to the vacuum pumping device through a vacuum tube; a centering chrome 86 is provided in the vacuum chamber, and a plurality of grooves 861 are provided on the outer surface of the centering chrome 86; the lower part of the vacuum chamber is a screw adsorption chamber, and the groove 861 is connected to the screw adsorption chamber.

[0034] Through the above structural design, the positioning bearing 83 can keep the screwdriver bit of the electric screwdriver 7 centered and accurately positioned, and the magnetic ring 84 can magnetize the screwdriver bit so that the screwdriver bit can absorb the screw well. When the screw is absorbed, the vacuum device forms a negative pressure in the vacuum chamber through the vacuum tube, and the screw absorption chamber also forms a negative pressure through the groove 861 on the centering chrome 86, and then the screw is absorbed in the screw absorption chamber, and the screw is absorbed by the screw bit at the same time. When the electric screwdriver 7 is started, the vacuum device can be disabled until it is restarted when the screw is absorbed.

[0035] Preferably, the number of the grooves 861 is three, and the three grooves 861 are arranged at equal intervals on the surface of the centering chrome 86; the cross-section of the groove 861 is a semicircular structure.

[0036] Preferably, the Z-axis moving mechanism 6 includes a lifting seat 61, a slide groove 62, a slider seat 63, a connecting seat 64 and a cylinder 65; the lifting seat 61 is connected to the X-axis moving mechanism 4, the slide groove 62 is arranged on the lifting seat 61, and the slider seat 63 is slidably arranged on the slide groove 62; the connecting seat 64 is arranged on the slider seat 63, and is used to connect the electric screwdriver 7 and the vacuum screw guide mechanism 8; the cylinder 65 is arranged on the top of the lifting seat 61, and its piston rod is connected to the slider seat 63. Through the above structural design, when the piston rod of the cylinder 65 is extended, it drives the slider seat 63 and the connecting seat 64 to move downward, and then drives the electric screwdriver 7 and the vacuum screw guide mechanism 8 to move downward, so as to realize the movement of both in the Z-axis direction.

[0037] Preferably, a first buffer module 66 and a second buffer module 67 are provided on the connecting seat 64 , the electric screwdriver 7 is connected to the connecting seat 64 via the first buffer module 66 , and the vacuum screw guide mechanism 8 is connected to the connecting seat 64 via the second buffer module 67 .

[0038] Preferably, the first buffer module 66 includes a side plate 661, a top plate 662, a linear slide rail 663, a first slider 664, a first movable plate 665, a buffer guide rod 666 and a first spring 667; the side plate 661 is connected to the connecting seat 64, the top plate 662 is arranged on the top of the side plate 661, the linear slide rail 663 is arranged on the side plate 661, and the first slider 664 is slidably arranged on the linear slide rail 663; the first movable plate 665 is connected to the first slider 664, and the electric screwdriver 7 is arranged on the first movable plate 665; the first spring 667 is sleeved on the buffer guide rod 666, one end of which is in contact with the top plate 662, and the other end is in contact with the first movable plate 665; The second buffer module 67 includes a second slider 671, a second movable plate 672, a limit block 673 and a second spring 674. The second slider 671 is slidably arranged on the linear slide rail 663. The second movable plate 672 is connected to the second slider 671. The vacuum screw guide mechanism 8 is arranged on the second movable plate 672. The limit block 673 is fixedly installed on the side plate 661. One end of the buffer guide rod 666 is connected to the second movable plate 672, and the other end passes through the first movable plate 665, the top plate 662 and the top of the lifting seat 61 in sequence. The second spring 674 is sleeved on the buffer guide rod 666, one end of which is abutted against the second movable plate 672, and the other end is abutted against the limit block 673. In this embodiment, the electric screwdriver 7 is installed on the first movable plate 665, and the vacuum screw guide mechanism 8 is installed on the second movable plate 672. The first movable plate 665 and the second movable plate 672 can both slide along the length direction of the linear slide rail 663. By utilizing the elastic deformation of the first spring 667 and the second spring 674, the electric screwdriver 7 and the vacuum screw guide mechanism 8 can provide a certain buffer when pressed down, so that the two can be close to the workpiece without damaging the workpiece.

[0039] Preferably, the X-axis moving mechanism 4 includes a gantry 41 and an X-axis translation module 42, and the X-axis translation module 42 is arranged on the crossbeam of the gantry 41; a Z-axis drag chain frame 43 is also arranged on the top of the gantry 41, and the Z-axis drag chain frame 43 is connected to the Z-axis moving mechanism 6. In this embodiment, the Z-axis drag chain frame 43 is used to install the cables and pipelines required for the Z-axis moving mechanism 6, the electric screwdriver 7 and the vacuum screw guide mechanism 8.

[0040] Preferably, the positioning fixture 9 includes a sealing seat 91, a suction cup assembly 92 and a workpiece fixture 93; the sealing seat 91 is connected to the Y-axis moving mechanism 5, and a vacuum connector 94 is provided on its side; the sealing seat 91 includes a bottom plate 911 and a cover plate 912, a cavity is provided between the bottom plate 911 and the cover plate 912, and the cavity is connected to the vacuum connector 94; the suction cup assembly 92 is fixedly connected to the bottom plate 911, and its opening extends from the top of the cover plate 912, and the suction cup assembly 92 is connected to the cavity; the workpiece fixture 93 is detachably connected to the cover plate 912. In this embodiment, the workpiece fixture 93 and the sealing seat 91 are connected in a detachable structure, which is convenient for replacing workpiece fixtures 93 of different structures according to workpieces of different sizes and specifications, and has a wide range of uses. By adopting a vacuum adsorption structure and using the suction cup assembly 92 to adsorb the workpiece, scratches on the surface of the workpiece can be effectively reduced.

[0041] Preferably, an auxiliary positioning device is also included, and the auxiliary positioning device is arranged in coordination with the positioning fixture 9 .

[0042] Preferably, the auxiliary positioning device is a CCD visual positioning device. In this embodiment, the position of the point is automatically identified by the CCD visual positioning device, and combined with the point position preset by the program, the positioning accuracy can be improved, the screw can be sent to the preset point more accurately, and the processing effect can be improved.

[0043] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model drives the positioning fixture to move the workpiece through the Y-axis moving mechanism, and at the same time the X-axis moving mechanism drives the Z-axis moving mechanism to move, so that the vacuum screw guide mechanism moves to the position above the screw arrangement machine to absorb the screw, the Z-axis moving mechanism drives the vacuum screw guide mechanism to descend to absorb the screw, the Z-axis moving mechanism rises and at the same time the X-axis moving mechanism moves the sucked screw to the locking point of the workpiece, the Z-axis moving mechanism descends and at the same time the electric screwdriver rotates and starts to lock the screw to the hole position, and automatically stops after reaching the set torque, and at the same time the Z-axis moving mechanism is lifted and moved to absorb the next screw, and the operation is cyclic. The utility model has a reasonable design and a simple structure, can realize automatic screw absorption and screw locking, effectively improves the screw locking efficiency, reduces the assembly cost of the product, and the locking torque is controllable, the locking effect is better, the overall operation is stable, and the operating cost is low.

[0044] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A desktop three-axis automatic screw locking machine, It is characterized in that The invention comprises a workbench (1), on which a control panel (2), a screw arrangement machine (3), an X-axis moving mechanism (4) and a Y-axis moving mechanism (5) are arranged; the X-axis moving mechanism is provided with a Z-axis moving mechanism (6), the Z-axis moving mechanism is provided with an electric screwdriver (7), the end of the electric screwdriver is provided with a vacuum screw guide mechanism (8), and the vacuum screw guide mechanism is connected to a vacuum pumping device; the Y-axis moving mechanism is provided with a positioning fixture (9); the vacuum screw guide mechanism comprises a connecting portion (81) and a suction nozzle (82), the connecting portion is provided with a positioning bearing (83) and a magnetic ring (84); the suction nozzle is arranged at the bottom of the connecting portion, a vacuum cavity is arranged in the suction nozzle, a vacuum connector (85) is arranged on the outer wall of the suction nozzle, one end of the vacuum connector is connected to the vacuum cavity, and the other end is connected to the vacuum pumping device through a vacuum tube; a centering chrome (86) is arranged in the vacuum cavity, and a plurality of grooves (861) are arranged on the outer surface of the centering chrome; the lower part of the vacuum cavity is a screw adsorption cavity, and the groove is connected to the screw adsorption cavity.

2. According to claim 1, the desktop three-axis automatic screw locking machine, It is characterized in that The number of the grooves is three, and the three grooves are arranged at equal intervals on the surface of the centering chrome; the cross section of the groove is a semicircular structure.

3. The desktop three-axis automatic screw locking machine according to claim 1, It is characterized in that The Z-axis moving mechanism comprises a lifting seat (61), a slide groove (62), a slider seat (63), a connecting seat (64) and a cylinder (65); the lifting seat is connected to the X-axis moving mechanism, the slide groove is arranged on the lifting seat, and the slider seat is slidably arranged on the slide groove; the connecting seat is arranged on the slider seat and is used to connect the electric screwdriver and the vacuum screw guide mechanism; the cylinder is arranged on the top of the lifting seat, and its piston rod is connected to the slider seat.

4. The desktop three-axis automatic screw locking machine according to claim 3, It is characterized in that The connection base is provided with a first buffer module (66) and a second buffer module (67); the electric screwdriver is connected to the connection base via the first buffer module; and the vacuum screw guide mechanism is connected to the connection base via the second buffer module.

5. The desktop three-axis automatic screw locking machine according to claim 4, It is characterized in that The first buffer module includes a side plate (661), a top plate (662), a linear slide rail (663), a first slider (664), a first movable plate (665), a buffer guide rod (666) and a first spring (667); the side plate is connected to the connecting seat, the top plate is arranged on the top of the side plate, the linear slide rail is arranged on the side plate, and the first slider is slidably arranged on the linear slide rail; the first movable plate is connected to the first slider, and the electric screwdriver is arranged on the first movable plate; the first spring is sleeved on the buffer guide rod, one end of which is in contact with the top plate, and the other end is in contact with the first movable plate; The second buffer module includes a second slider (671), a second movable plate (672), a limit block (673) and a second spring (674), the second slider can be slidably arranged on the linear slide rail, the second movable plate is connected to the second slider, and the vacuum screw guide mechanism is arranged on the second movable plate; the limit block is fixedly installed on the side plate; one end of the buffer guide rod is connected to the second movable plate, and the other end passes through the first movable plate, the top plate and the top of the lifting seat in sequence; the second spring is sleeved on the buffer guide rod, one end of which abuts against the second movable plate, and the other end abuts against the limit block.

6. The desktop three-axis automatic screw locking machine according to claim 1, It is characterized in that The X-axis moving mechanism comprises a gantry (41) and an X-axis translation module (42), wherein the X-axis translation module is arranged on a crossbeam of the gantry; a Z-axis drag chain frame (43) is also arranged on the top of the gantry, and the Z-axis drag chain frame is connected to the Z-axis moving mechanism.

7. The desktop three-axis automatic screw locking machine according to claim 1, It is characterized in that The positioning fixture comprises a sealing seat (91), a suction cup assembly (92) and a workpiece clamp (93); the sealing seat is connected to the Y-axis moving mechanism, and a vacuum connector (94) is provided on its side; the sealing seat comprises a base plate (911) and a cover plate (912), a cavity is provided between the base plate and the cover plate, and the cavity is connected to the vacuum connector; the suction cup assembly is fixedly connected to the base plate, and an opening thereof extends from the top of the cover plate, and the suction cup assembly is connected to the cavity; the workpiece clamp is detachably connected to the cover plate.

8. The desktop three-axis automatic screw locking machine according to any one of claims 1 to 7, It is characterized in that It also includes an auxiliary positioning device, which is arranged in coordination with the positioning fixture.

9. The desktop three-axis automatic screw locking machine according to claim 8, It is characterized in that The auxiliary positioning device is a CCD visual positioning device.

Images