KR101155961B1 - Two dimension driving inspection apparatus replaced 1 axis by conveyor - Google Patents

Abstract

PURPOSE: An apparatus for inspecting biaxial driving of a conveyor instead of one axis driving is provided to remarkably reduce vibration in a checking procedure by designing an X-axis assembly to have a lower center. CONSTITUTION: An inspection conveyor(12) is installed on the top of a base frame. An X-axis assembly(14) precisely transfers a subject to an X axial direction of a checking area. The X-axis assembly is substantially installed on the same plane as the inspection conveyor. An Y-axis assembly(16) is installed on the inspection conveyor at an upper side of the base frame. The Y-axis assembly is arranged at a Y-axis of a right angle direction to the inspection conveyor. The Y-axis assembly precisely horizontally transfers an inspection device to the Y-axis. The inspection conveyor installed on the top of the base frame is installed on the same line as a transfer conveyor in pre-processing and post-processing. A conveyor belt is respectively installed in each front rail and back rail along a longitudinal direction of a rail.

Description

TWO DIMENSION DRIVING INSPECTION APPARATUS REPLACED 1 AXIS BY CONVEYOR}

The present invention relates to a two-axis drive test apparatus for transferring the tester itself for inspecting a plate or a test object mounted in the X-axis and Y-axis direction to position the test object in the test area, and more specifically, For example, a two-axis drive inspection device in which the conveyor replaces one axis, which allows the conveyor to transfer the inspected object to replace the X axis, thereby providing excellent space utilization of the equipment, reducing volume and weight, and reducing vibration during operation. will be.

Many industrial fields are introducing automation systems to manufacturing sites to improve productivity and reduce costs.

In an automated system, semi-finished products are placed on a conveyor and then transported so that they can be assembled, processed, and inspected by process.

For example, a surface integrated board designed to implement a complex circuit by mounting a large number of small components such as SMD is designed with a highly integrated circuit designed on a limited size board, so the circuit structure formed on the surface mounted board is very complicated and the line width is minute. Is formed. Therefore, before the electronic component is mounted on the surface mount substrate, it is transferred to the inspection process to check whether there is an abnormality in the pattern formed on the surface mount substrate by the surface mount substrate inspector, or whether the electronic device is normally attached to the surface mount substrate. At this time, in order to increase productivity, the conveying process is transferred to the inspection process through the conveyor. The inspection apparatus used for the inspection moves the surface mounting substrate in the X-axis direction and Y-axis direction so that all areas of the surface-mount substrate can be inspected. The inspection is performed while moving, and for this purpose, the inspection apparatus is provided with means for moving the surface-mount substrate, which is a subject, in the X-axis direction and the Y-axis direction.

[Patent Document 1] Registered Utility Model Publication 20-0447630 (August 11, 2010) Patent Document 1 shown in Fig. 1 is a filed by the present applicant, the vision (2) for photographing the state of the surface-mount substrate; An X-axis slide block 124 to which the vision is mounted and moved in the X-axis direction; An X-axis ball screw 125 connected to the X-axis slide block by a screwing method so as to move horizontally and both ends of the X-axis slide block passing through the support units 117b and 118b; An X-axis guide rail 126 in which a lower portion of the X-axis slide block is slidably seated; An X-axis motor 122 driving the X-axis ball screw to rotate in the forward or reverse direction; An X-axis frame 121 to which the X-axis motor, the support unit, and the X-axis guide rail are fixed; Y-axis slide blocks (114) (114a) coupled to both ends of the X-axis frame and integrally moved in the Y-axis direction with the X-axis frame; A Y-axis ball screw (115) (115a) connected to the Y-axis slide block by a screwing method so as to move horizontally and both ends of which are supported by a support unit; A Y-axis guide rail 116 and 116a on which a lower portion of the Y-axis slide block is slidably seated; Y-axis motors 112 and 112a connected to the Y-axis ball screws on both sides of the X-axis frame to rotate the Y-axis ball screws on both sides simultaneously in the forward or reverse direction simultaneously; and the Y-axis motor and the support unit. And a Y-axis frame (11) to which the Y-axis guide rail is fixed is disclosed. The surface mount substrate inspector of Patent Literature 1 includes an X-axis assembly 120 and a Y-axis assembly 110 (110a) as a means for moving the vision (2) for photographing the state of the surface mount substrate to each inspection position of the inspection area. ) Is provided, the vision 2 is fixed to the X-axis slide block 124, the X-axis assembly 120 is installed on the top of the Y-axis assembly (110) (110a). Thus, when the Y-axis motors 112 and 112a are operated, the Y-axis slide blocks 114 and 114a on which the X-axis assembly 120 is installed are moved along the Y-axis ball screws 115 and 115a, while X When the shaft motor 122 is operated, the X-axis slide block 124 is moved along the X-axis ball screw 125 to check whether the surface-mount substrate that has been transferred to the upper surface of the base frame 5 is defective. In the surface-mount substrate inspection apparatus, the X-axis assembly 120 and the Y-axis assembly for moving the conveyor means and the vision 2 to move the object to the X and Y axes to each inspection position of the inspection area. As the 110 and 110a are separately provided and installed, the number of parts constituting the equipment is also increased, and the structure is complicated and the manufacturing cost is increased.

The present invention has been made in view of the above circumstances, and has a means for precisely moving a subject in a conveyor direction along with a subject transfer means on a conveyor for transferring a subject such as a surface-mount substrate in the X-axis direction. Thus, by having the conveyor replace its function without substantially having an X-axis assembly, the X-axis is designed to be low center of gravity, greatly reducing vibration, which is an obstacle to inspection, and increasing space efficiency by reducing the size and weight of the equipment. In order to provide a two-axis drive inspection device in which a conveyor replaces one axis, the drive frame, which is needed to prevent the gantry from shaking, and the parts that support the drive frame are not needed. There is this.

The present invention for realizing the above object,

An inspection conveyor comprising a pair of front rails and a rear rail installed on an upper surface of the base frame of the inspector, each of which has a conveying belt configured to receive a test object from a previous process or to be transferred to a post process in a closed loop form; A clamping unit installed at one side of the conveyance belt of the front rail and the rear rail to temporarily fix the subject mounted on the conveyance belt at a predetermined interval from the conveyance belt at the time of inspecting the subject; A plurality of guide rollers installed at predetermined intervals along the length of the conveying belt in the longitudinal direction of the conveying belt and a driving pulley for transmitting rotational power to the conveying belt and a conveying belt driving rotating the driving pulley A conveyor drive unit made of a motor; An X-axis driving unit for horizontally moving the clamping unit in the conveyor conveyor in the X-axis direction in the inspector conveyor; And a Y-axis assembly disposed on the inspector conveyor in the Y-axis direction perpendicular to the inspector conveyor on the base frame upper surface to horizontally move the inspection mechanism in the Y-axis direction.

The clamping unit comprises: an upper fixing plate spaced apart from the upper side of the conveying belt by a predetermined distance and fixed to the LM block along the longitudinal direction of the conveyor; A lower movable plate spaced apart from the lower side of the conveying belt by a predetermined distance and installed along the longitudinal direction of the conveyor, the lower movable plate being fixed to the clamp elevating cylinder through the base plate and the fixing bracket so that the subject can be clamped together with the upper fixing plate when raised; Characterized in that consisting of.

The X-axis drive unit is an LM guide rail installed along the longitudinal direction on the front rail and the rear rail; An LM block coupled to the LM guide rail and sliding; A timing belt in which the LM block is fixed and coupled to the X-axis idler and the X-axis timing pulley in a closed loop shape; The X-axis timing pulley is connected via a drive shaft, characterized in that consisting of an X-axis drive motor for rotating the timing belt.

A plurality of width adjustment timing belts penetrating the front rail and the rear rail at right angles, one end of which is coupled to an idler while the other end of which is coupled to a timing pulley and installed in a closed loop shape; A holder for integrally connecting the moving rail and the width adjusting timing belt to adjust the width of the front rail and the rear rail; A width adjusting motor coupled to the timing pulley to rotate the width adjusting timing belt; Through the front rail and the rear rail at right angles, both ends are respectively coupled to the guide shaft holder to support the front rail and the rear rail and to be slidably coupled when the front rail or the rear rail is moved. Rail guide shaft; is made of a width adjustment unit comprising a further.

The Y-axis assembly is a Y-axis base frame which is installed in the Y-axis direction perpendicular to the inspector conveyor on the upper side of the inspector conveyor on the base frame upper surface; A Y-axis LM guide rail installed along the longitudinal direction in the Y-axis base frame; A Y-axis LM block horizontally moved in the Y-axis direction along the Y-axis LM guide rail; A Y-axis ball screw connected to the Y-axis LM block by a screwing method so as to move horizontally and both ends thereof being supported by a support unit; And a Y-axis motor connected to the Y-axis ball screw to drive the Y-axis ball screw to rotate in the forward or reverse direction.

In the present invention as described above, the conveyor for transporting the subject to replace the X-axis, the X-axis assembly is designed with a low center of gravity, which significantly reduces the vibration that is an obstacle in the inspection, the size of the inspector itself is significantly reduced, as well as excellent space efficiency Reduction of the silencer can give a sense of stability when driving, there is an advantage that the shaking at the end generated when driving in the gantry structure is reduced. In addition, there is no need to install a separate component that supports the X-axis frame, thereby reducing costs and reducing labor costs.

1 is a perspective view of a conventional two-axis drive checker,
2 is a perspective view of the present invention,
3 is a perspective view of the X-axis assembly in a state excluding the Y-axis assembly in FIG.
4 is a plan view of the state excluding the Y-axis assembly in FIG.
5 is a cross-sectional view taken along line AA of FIG. 2, FIG. 5 (a) shows when the clamp is lowered, and FIG. 5 (b) shows when the clamp is raised,
6 shows a perspective view of the Y-axis assembly of the present invention.

Hereinafter, the configuration and operation of the preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a perspective view of the present invention, FIG. 3 is an X-axis perspective view of the state excluding the Y-axis assembly in FIG. 2, and FIG. 4 is a plan view of the state excluding the Y-axis assembly in FIG. 2.

In the inspection apparatus according to the present invention, the inspection of the inspected object is performed by dividing the entire region of the inspected object into the local region by locating the inspection mechanism for each local inspection region. To this end, in the inspection apparatus according to the present invention, the inspection apparatus is moved in the X-axis direction and the inspection mechanism is moved in the Y-axis direction so that the inspection apparatus can be positioned in the inspection region of the subject.

As a means for moving the test object in the X-axis direction, as shown in FIG. In addition to the inspection conveyor 12 is provided on the base frame 10, the X-axis assembly 14 for precisely moving the subject in the X-axis direction of the inspection area substantially the inspection conveyor 12 and It is installed on the same plane. Then, the Y-axis assembly 16 is disposed on the upper surface of the base frame 10 in the Y-axis direction perpendicular to the inspector conveyor 12 on the inspector conveyor 12 to precisely horizontally move the inspection mechanism in the Y-axis direction. It is provided.

The inspector conveyor 12 installed on the base frame 10 is installed on the same line as the transfer conveyor of the previous process and the subsequent process, and as shown in FIGS. 3 and 4, the front rail 12a and the rear rail ( 12b) in pairs.

Each of the front rail 12a and the rear rail 12b is provided with a conveyance belt 18 along the longitudinal direction of the rail.

The conveying belt 18 is coupled in a closed loop form to a plurality of guide rollers 20 to maintain the tension of the conveying belt and a conveyor driving pulley 22 that transmits rotational power to the conveying belt 18. The conveyor drive motor 26 is connected to the pulley 22 through the conveyor drive shaft 24.

 Therefore, when the conveyor drive motor 26 is operated, the conveyor drive pulley 22 is rotated to move the conveying belt 18 in a horizontal direction, which is installed at each of the front rail 12a and the rear rail 12b. Both edges of the subject are placed on the conveying belt 18 and are conveyed.

On the other hand, each of the front rail (12a) and the rear rail (12b) on the inspector conveyor rail (12) to move the test object precisely horizontally in the X-axis direction apart from the inspector conveyor rail 12, the subject is substantially the inspection area The clamping unit 30 is installed to move to be located in.

The clamping unit 30 is mounted on the upper side of the conveying belt 18 to lift the inspected object transferred to the inspector conveyor 12 to the upper side of the conveying belt 18 to separate from the conveying belt 18 and then remove the subject. It precisely moves horizontally in the axial direction to place it in the inspection area. The clamping unit 30 is installed to reciprocate in the horizontal direction to move the subject to the inspection area.

To this end, the clamping unit 30 is an LM guide rail 31 installed along the longitudinal direction of the X-axis direction on each of the front rail 12a and the rear rail 12b, and the X-axis direction on the LM guide rail 31. LM block 32, which is slidably coupled horizontally, and an upper fixing plate 33 fixed to an upper portion of the LM block 32 so as to be positioned above the conveying belt 18, the upper fixing plate 33 Corresponding to the lower movable plate 34 for clamping the subject, and the lower movable plate 34 is composed of a base plate 35 for fixing the lifting cylinder 40 side. Each of the components of the clamping unit 30 is only partially shown in the front rail 12a and the rear rail 12b of FIG. 3, but is substantially identically configured at both sides, and the detailed configuration thereof is shown in FIG. 5. .

The lifting cylinder 40 for operating the clamping unit 30 is installed at each outside of the front rail 12a and the rear rail 12b. Therefore, the base plate 35 for fixing the lower movable plate 34 to the lifting cylinder 40 side has a clamp moving groove 36 formed to penetrate the front rail 12a and the rear rail 12b along its length direction. It is installed penetrating through. And the vertical movement in the clamp moving groove 36 in accordance with the operation of the lifting cylinder 40, the lower movable plate 34 is raised and lowered by clamping the object to be lifted or released by clamping belt 18 while seating Do it.

The installation structure and the operating state of the clamping unit 30 are shown in detail in the sectional view taken along the line A-A of FIG. FIG. 5A illustrates a state in which the clamping unit 30 is lowered, and FIG. 5B illustrates a state in which the lifting cylinder 40 is raised to raise the clamping unit 30. When the lifting cylinder 40 rises, the lower movable plate 34 fits the bottom surface of the upper fixing plate 33 as the base plate 35 connected to the cylinder rod side rises vertically in the clamp moving groove 36. In this case, the lower movable plate 34 is clamped by being in close contact with the upper fixing plate 33 while lifting the subject seated on the transfer belt 18.

The X-axis driving unit 50 is for precisely horizontally moving the clamping unit 30 in the X-axis direction to precisely position the subject in the inspection region of the inspector, and each of the front rail 12a and the rear rail 12b. LM guide rails 31 installed along the longitudinal direction in the X-axis direction, LM blocks 32 slidably coupled to the LM guide rails 31 in the X-axis direction, and LM blocks 32 ) Is fixed and coupled to the X-axis idler 51 and the X-axis timing pulley 52 in the form of a closed loop, and is connected to the X-axis timing pulley 52 via a drive shaft 54 for timing. X-axis drive motor 55 for rotating the belt (53). The drive shaft 54 penetrates the front rail 12a and the rear rail 12b so that one end of the drive shaft 54 is connected to the X-axis drive motor 55 while the other end is supported by the support unit 56.

The X-axis drive unit 50 is installed on each of the front rail (12a) and the rear rail (12b) the same, but in this embodiment, the drive shaft 54 is rotated by one X-axis drive motor 55 X-axis timing pulleys 52 of the front rail 12a and the rear rail 12b are coupled to each other so that each clamping unit 30 is synchronized with the operation of one X-axis driving motor 55 to simultaneously operate in the X-axis direction. It is made to work precisely.

The front rail 12a and the rear rail 12b according to the present embodiment are provided with a width adjusting unit 60 so that the front rail 12a and the rear rail 12b can be used for inspecting a subject having various sizes of widths.

To this end, the front rail 12a and the rear rail 12b are slidably coupled to and supported on the rail guide shaft 61 penetrating the front rail 12a and the rear rail 12b at right angles to allow width adjustment. do. Both ends of the rail guide shaft 61 are coupled to the guide shaft holder 62, respectively.

In addition, the width adjusting unit 60 is a means for moving the front rail 12a or the rear rail 12b on the rail guide shaft 61, and the front rail 12a and the rear rail 12b at right angles. Through, the one end is coupled to the idler 67 while the other end is coupled to the timing pulley 63 is provided with a plurality of width adjustment timing belt 64 is installed in a closed loop form.

The width adjustment timing belt 64 is connected to a rail to move for width adjustment of the front rail 12a or the rear rail 12b through the holder 65, so that the holder when the width adjustment timing belt 64 rotates ( The rail connected by 65 is moved along the rail guide shaft 61. The front rail 12a or the rear rail 12b, which is not connected to the width adjustment timing belt 64 by the holder 65, is stopped because no power is transmitted even when the width adjustment timing belt 64 is rotated. Is maintained. In the illustrated example, the holder 65 is coupled to the rear rail 12b, and thus the rear rail 12b is moved to adjust the width.

The width adjustment motor 68 is connected to the width adjustment timing belt 64 via a timing pulley 63 coupled to the width adjustment timing belt driving shaft 66.

In the present embodiment, two width adjustment timing belts 64 are provided at both sides along the longitudinal direction of the front rail 12a and the rear rail 12b, but may be increased or decreased as necessary. In addition, in the present embodiment, two timing pulleys 63 are installed on the width adjustment timing belt drive shaft 66 coupled to one width adjustment motor 68 to combine the respective width adjustment timing belts 64. The two width adjustment timing belts 64 can be moved simultaneously by the drive of the width adjustment motor 68.

5 shows a perspective view of a Y-axis assembly according to the invention.

The Y-axis assembly 16 is installed in the Y-axis direction perpendicular to the inspector conveyor 12 on the upper side of the inspector conveyor 12 installed on the upper surface of the base frame 10.

To this end, the Y-axis assembly 16 has a Y-axis base frame 72 is installed on the Y-axis assembly support 71 is installed on the upper surface of the base frame 10, the Y-axis base frame 72 is a tester conveyor 12 It is installed to be located at the top of).

The Y-axis base frame 72 is provided with a Y-axis LM guide rail 73 along its longitudinal direction, and the Y-axis LM guide rail 73 is a Y-axis LM block 74 with a Y-axis LM guide rail ( It is installed to be able to move horizontally along the Y axis along 73).

In addition, the Y-axis LM block 74 is coupled to the Y-axis ball screw 75 through the screw coupling method to move the Y-axis LM block 74, both ends of the Y-axis ball screw 75 The Y-axis drive motor 77 for driving the Y-axis ball screw 75 in a forward or reverse direction is connected to one end thereof while being supported by the support unit 76.

One side of the Y-axis LM block 74 may be equipped with various optional devices such as an inspection tool, an optical instrument, a scan camera, or a laser according to the purpose of using the apparatus, and may be applied to various working environments.

Referring to the operation of the two-axis drive inspection apparatus in which the conveyor according to the present invention replaced one axis as follows.

When the test object is transferred to the present inspection device through the transfer conveyor of the previous process, the conveyor drive motor 26 is also operated at the same time. At this time, the conveyor drive pulley 22 is rotated in accordance with the drive of the conveyor drive motor 26, and the conveying belt 18 coupled to the conveyor drive pulley 22 is rotated while being supported by the guide rollers 20.

Accordingly, the object to be transferred through the conveyance conveyor of the previous process is introduced into the inspection apparatus in a state seated on the conveyance belt (18).

The lift cylinder 40 is operated to lift the lower movable plate 34 through the base plate 35 in the state in which the test object has been drawn into the test apparatus. At this time, the lower movable plate 34 lifts the test object, Clamping is in close contact with the fixing plate (33).

After that, while controlling the driving of the X-axis drive motor 50, the clamping unit 30 is precisely moved through the pitch feed or the section feed in the X-axis direction to the inspection mechanism (not shown) that depends on the Y-axis assembly 16 The inspection and work is made possible by local correspondence to the inspection area of

In this way, after placing the subject in the X-axis inspection region through the X-axis assembly 14, the Y-axis assembly 16 is driven to move the Y-axis LM block 74 in which the inspection mechanism is mounted in the Y-axis direction. Y-axis inspection is performed.

That is, the X-axis assembly 14 is moved by a distance set in the X-axis direction, and then Y-axis ball screw 75 coupled to the Y-axis drive motor 77 by coupling when the Y-axis drive motor 77 is driven. The Y-axis LM block 74 screwed with the Y-axis ball screw 75 at the same time as being rotated is fixed by moving horizontally by the coordinate set in the Y-axis direction along the Y-axis LM guide rail 73, and then Y-axis. The inspection mechanism mounted on the LM block 74 is operated to perform the inspection operation of the subject.

The present invention as described above is composed of a clamping unit 30 is integrally coupled to the conveyor rail 12 and the Y axis is composed of a single-axis robot, there is no twisting or direction elements during driving, the complex interlock of the configuration program Does not require the element of

In addition, the inspection mechanism mounted on the Y-axis LM block 74 may be replaced with a line scanner, a laser mechanism, or the like to perform a task suitable for a predetermined purpose.

10-base frame, 12-conveyor,
14-X-axis assembly, 16-Y-axis assembly,
18-conveying belt, 22-conveyor driven pulley,
24-conveyor drive shaft, 26-conveyor drive motor,
30-clamping unit, 31-LM guide rail,
32-LM block, 33-upper fixing plate,
34-lower movable plate, 40-lifting cylinder,
50-X-axis drive unit, 55-X-axis drive motor,
60-width adjustment unit, 66-width adjustment timing belt,
72-Y-axis base frame, 73-Y-axis LM guide rail,
74-Y axis LM block, 75-Y axis ball screw,
77-Y-axis drive motor.

Claims (5)

An inspection conveyor comprising a pair of front rails and a rear rail installed on an upper surface of the base frame of the inspector, each of which has a conveying belt configured to receive a test object from a previous process or to be transferred to a post process in a closed loop form;
A clamping unit installed at one side of the conveyance belt of the front rail and the rear rail to temporarily fix the subject mounted on the conveyance belt at a predetermined interval from the conveyance belt at the time of inspecting the subject;
A plurality of guide rollers installed at predetermined intervals along the length of the conveying belt in the longitudinal direction of the conveying belt and a driving pulley for transmitting rotational power to the conveying belt and a conveying belt driving rotating the driving pulley A conveyor drive unit made of a motor;
An X-axis driving unit for horizontally moving the clamping unit in the conveyor conveyor in the X-axis direction in the inspector conveyor;
A two-axis conveyor comprising one axis, wherein the conveyor comprises a Y-axis assembly disposed on the inspector conveyor in a Y-axis direction perpendicular to the inspector conveyor and horizontally moving the inspection mechanism in the Y-axis direction. Drive test device.
The method of claim 1, wherein the clamping unit
An upper fixing plate spaced apart from the upper side of the conveying belt by a predetermined distance and fixed to the LM block along the longitudinal direction of the conveyor;
A lower movable plate spaced apart from the lower side of the conveying belt by a predetermined distance and installed along the longitudinal direction of the conveyor, the lower movable plate being fixed to the clamp elevating cylinder through the base plate and the fixing bracket so that the subject can be clamped together with the upper fixing plate when raised; Two-axis drive inspection device in which the conveyor is replaced with one axis, characterized in that consisting of.
According to claim 1, wherein the X-axis drive unit
LM guide rails installed along the longitudinal direction on the front rail and the rear rail;
An LM block coupled to the LM guide rail and sliding;
A timing belt in which the LM block is fixed and coupled to the X-axis idler and the X-axis timing pulley in a closed loop shape;
The X-axis timing pulley is connected to the X-axis drive shaft for rotating the timing belt, characterized in that the conveyor replaces one axis of the two-axis drive inspection apparatus.
According to any one of claims 1 to 3, wherein the front rail and the rear rail through a plurality of right angles, one end is coupled to the idler while the other end is coupled to the timing pulley is installed in a closed loop form Adjustable timing belt;
A holder for integrally connecting the moving rail and the width adjusting timing belt to adjust the width of the front rail and the rear rail;
A width adjusting motor coupled to the timing pulley to rotate the width adjusting timing belt;
Through the front rail and the rear rail at right angles, both ends are respectively coupled to the guide shaft holder to support the front rail and the rear rail and to be slidably coupled when the front rail or the rear rail is moved. Rail guide shaft; Conveyor is a two-axis drive inspection device, characterized in that the width adjustment unit further comprises a shaft installed.
The Y-axis assembly of claim 1, wherein the Y-axis assembly
A Y-axis base frame installed in an Y-axis direction perpendicular to the tester conveyor at an upper side of the tester conveyor on the base frame;
A Y-axis LM guide rail installed along the longitudinal direction in the Y-axis base frame;
A Y-axis LM block horizontally moved in the Y-axis direction along the Y-axis LM guide rail;
A Y-axis ball screw connected to the Y-axis LM block by a screwing method so as to move horizontally and both ends thereof being supported by a support unit;
And a Y-axis motor connected to the Y-axis ball screw to drive the Y-axis ball screw to rotate in the forward or reverse direction in the forward or reverse direction.

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