Double-tool internal replacement type visual inspection equipment for cover plate

Abstract

According to the double-tool internal replacement type visual detection equipment for the cover plate, a displacement detection opening is formed in the middle of the surface of a base, and an upper-layer replacement tool assembly is arranged on the upper surface of the displacement detection opening of the base in a longitudinal translation mode; the lower layer replacement tool assembly is arranged on the lower portion in the displacement detection opening of the base in a longitudinal front-back lifting displacement mode, during use, through the upper layer replacement tool assembly and the lower layer replacement tool assembly which can move, the type of a tool needing to be detected is directly selected, stable double-station replacement is achieved under the condition that the stable strength of the tool is guaranteed, and the working efficiency is improved. Moreover, the size of the whole detection device can be reduced as possible, the use space on the inner side of the bottom of the base of the basic detection device is effectively utilized, the occupied space use efficiency of a production workshop is effectively improved, and multi-model detection of one detection machine is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of visual inspection of automobile cover plates, and specifically relates to a double-tool internally replaceable visual inspection device for cover plates. Background Art

[0002] With the development of social economy, cars have become more and more popular, and almost every family has a car. The car cover is an indispensable part of the car parts. The cover can make the car more beautiful and at the same time, it can also protect the important parts of the car.

[0003] In order to achieve high-precision intelligent driving control, most of the current smart driving cars will have a laser radar installed on the front side of the roof. The cover plate wrapped around the outside of the car's laser radar has extremely high surface accuracy requirements for the outer surface and the inner bottom surface of the laser radar installation in order to ensure that the shape of the outer surface is accurate enough. Therefore, the accuracy requirements for the outer surface and the inner bottom surface of the cover plate are extremely high. Usually, large-scale external surface visual inspection equipment is required for inspection. In order to ensure the inspection accuracy, two sets of inspection devices are required to be set up above and below to inspect the top and bottom surfaces of the cover plate respectively to ensure sufficient light for visual inspection.

[0004] However, this type of single high-precision and multi-faceted testing equipment has an extremely high cost, and in order to adapt and position the cover, it is also necessary to set up a positioning tool inside the testing equipment. However, in order to ensure the stability of the positioning tool, high-precision debugging is required during the installation process. Therefore, the difficulty and time required to replace the positioning tool are very great. However, production needs to be arranged according to the number of orders. Each time a different type of cover is tested, a different type of positioning tool needs to be replaced, which will be very cumbersome and complicated. If a fixed testing device is set up for each model, the cost will be very high.

[0005] Therefore, there is a need for a testing device that can stably and efficiently replace the workstations of different positioning tools and will not affect the accuracy of the positioning tools installed inside the testing device. Summary of the invention

[0006] In order to solve the above problems, this paper proposes a double-tool internal replaceable visual inspection equipment for cover plates, wherein a top surface inspection mechanism is provided above the base of the visual inspection equipment, and a bottom surface inspection mechanism is provided below the inside of the base, a detection displacement opening is provided in the middle of the surface of the base, and an upper replacement tooling assembly is longitudinally translated on the upper surface of the detection displacement opening of the base, and a lower replacement tooling assembly is longitudinally lifted and displaced front and back on the inside of the detection displacement opening of the base, the bottom surface inspection mechanism is arranged at the front bottom of the detection displacement opening, and the lower replacement tooling assembly is arranged on the outside of both sides of the bottom surface inspection mechanism, the upper replacement tooling assembly includes an upper positioning tooling, an upper guide rail and an upper push rod, the lower replacement tooling assembly includes a lower positioning tooling, a vertical displacement guide column, a lower active shifting plate, a displacement upright, an oblique slope side plate, a lower guide rail and a lower push rod, and the left and right sides of the bottom surface inspection mechanism are symmetrically provided with oblique slope side plates, the oblique slope side plates The surface of the tool is high in front and low in the back, and a slope guide groove is provided. The inner side of the slope guide groove of the oblique slope side plate is connected to the guide of the lower positioning tooling through a displacement vertical rod. The bottom surface of the lower positioning tooling is connected to the lower active moving plate for up and down displacement through a vertical displacement guide rod. The surface of the lower active displacement plate is provided with a detection avoidance opening. The left and right ends of the lower active displacement plate are longitudinally and horizontally moved by the lower guide rail and the lower push rod. When in use, the type of tooling required for inspection is directly selected through the movable upper replacement tooling assembly and the lower replacement tooling assembly, and then the cover plate required for inspection is placed thereon, and the top and bottom surfaces of the cover plate are respectively inspected by the top surface inspection mechanism and the bottom surface inspection mechanism. Therefore, stable double-station replacement is achieved while ensuring the stable strength of the tooling, and the volume of the overall inspection device can be reduced as much as possible, and the use space on the inner side of the bottom of the base of the basic inspection device is effectively utilized, which effectively increases the floor space utilization efficiency of the production workshop and improves the multi-model inspection of one inspection machine.

[0007] The shape of the base is a rectangular frame table-type base, and a detection displacement opening is provided in a conductive manner on the front side of the center of the surface of the base, and a top surface detection mechanism is suspended above the top surface of the base. A hidden double-layer internal displacement detection cavity is provided inside the base, and a bottom surface detection mechanism is horizontally provided in the front center of the internal displacement detection cavity. Through the base surface with the detection displacement opening, not only can the bottom surface of the cover plate be detected from the inside of the base through the bottom surface detection mechanism, but the lower positioning tooling that is displaced downward can also be effectively avoided through the opening, thereby achieving the displacement storage effect of the lower positioning tooling.

[0008] The top surface detection mechanism is a hoisting multi-axis mechanical arm detection mechanism, which includes a detection mechanical arm, a top surface movable lighting board and a top surface detection camera. The detection mechanical arm is a multi-axis multi-angle mechanical arm. The detection mechanical arm is vertically hoisted and provided with an upper center of a base, and the bottom end of the detection mechanical arm is fixedly provided with a top surface movable lighting board. A top surface detection camera is provided in parallel with each other in the middle of a lower side of the top surface movable lighting board. The top surface detection camera is horizontally arranged below the top surface movable lighting board facing the middle of the top surface movable lighting board. Through the top surface detection mechanism of the multi-axis mechanical arm, the multi-angle automated cover surface detection effect function is realized, thereby ensuring the accuracy and degree of automation of the detection.

[0009] The upper positioning tooling is a flat plate-type tooling. The bottoms of the left and right ends of the upper positioning tooling are longitudinally connected to the upper guide rails through sliders. The outer side of one end of the upper positioning tooling is longitudinally parallel to the upper push rod. The upper guide rails are symmetrically arranged on the left and right sides of the upper surface of the detection displacement opening. The outer side of the upper guide rail on one side is longitudinally parallel to the upper push rod. Through the movable upper positioning tooling, the effect of displacement and recovery on the base surface is achieved. When needed, it only needs to be moved to the top of the ground detection mechanism for detection. When not in use, it can be stored by parallel displacement.

[0010] The bottom surface detection mechanism includes a bottom surface detection camera and a bottom surface fixed lighting plate. The bottom surface detection cameras are arranged horizontally equidistantly at the front bottom of the detection displacement opening. The bottom surface detection camera is arranged vertically upward at the front bottom of the detection displacement opening. Two groups of bottom surface fixed lighting plates are arranged parallel to each other on the front and rear sides of the bottom surface detection camera. The bottom surface fixed lighting plates are in the shape of strip lighting plates. The luminous surfaces of the bottom surface fixed lighting plates are all horizontally upward. Through the bottom surface detection mechanism with multiple cameras and multiple light boards, a high-precision cover bottom surface detection function fixed at the bottom of the base is realized, which ensures effective utilization of the space inside the base and can accommodate sufficient cameras while achieving sufficient detection accuracy.

[0011] The shape of the inclined slope side plate is a longitudinal trapezoidal plate with a high front and a low rear, and a slope guide groove with a high front and a low rear is provided in the middle of the surface of the inclined slope panel, and the front and rear ends of the slope guide groove are longitudinally and horizontally parallel to each other and are provided with positioning flat grooves, and the left and right sides of the inclined slope panel are longitudinally symmetrically provided with lower guide rails, and the bottom surface of the lower guide rail is higher than the highest surface of the inclined slope panel, and the upper side of the lower guide rail is longitudinally symmetrically connected to the lower active moving plate through a slider, and one end of the lower active moving plate is longitudinally and parallelly connected to the lower push rod on the outer side, and a lower push rod is longitudinally parallel to the outer side of the lower guide rail on one side, and the shape of the lower positioning tooling is a flat plate tooling, and the left and right ends of the bottom of the lower positioning tooling are vertically fixed with displacement uprights, and the top of the displacement uprights is fixedly connected to the bottom surface of the lower positioning tooling, and the bottom end of the displacement uprights guides the displacement The fixed card connection is arranged on the inner side of the slope guide groove, and a plurality of vertical displacement guide columns are vertically arranged on the front and rear sides of the bottom surface of the lower positioning tooling, and the outer side of the vertical displacement guide column is inserted and nested through the surface of the lower active moving plate through the guide ring. The front and rear side surfaces of the lower active moving plate are penetrated by a plurality of guide rings. The lower positioning tooling realizes the horizontal displacement of the plane of the lower active moving plate through the inclined slope side plate, which is converted into the up and down displacement of the slope, thereby realizing the longitudinal displacement storage while also displacing downward to store and avoid the upper positioning tooling, and the lower active moving plate can also pull the lower positioning tooling through the vertical displacement guide column, and can also facilitate its downward guiding movement, thereby ensuring the stability of the lower positioning tooling, and can also play a basic stabilizing effect to ensure the stability and stability of the lower positioning tooling during use.

[0012] Beneficial effects:

[0013] When in use, the type of tooling required for inspection is directly selected through the movable upper replacement tooling assembly and the lower replacement tooling assembly, and then the cover plate required for inspection is placed thereon, and the top surface and bottom surface of the cover plate are inspected respectively through the top surface inspection mechanism and the bottom surface inspection mechanism. In this way, stable double-station replacement is achieved while ensuring the stable strength of the workpiece, and the volume of the overall inspection device can be reduced as much as possible, and the use space on the inner side of the bottom of the base of the basic inspection device can be effectively utilized, thereby effectively increasing the utilization efficiency of the production workshop and improving the multi-model inspection of one inspection machine.

[0014] Through the base surface with a displacement detection opening, not only can the bottom surface of the cover be detected from the inside of the base through the bottom surface detection mechanism, but the lower positioning tooling that is displaced downward can also be effectively avoided through the opening, thereby achieving the displacement storage effect of the lower positioning tooling.

[0015] Through the top surface detection mechanism of the multi-axis robotic arm, the multi-angle automated cover surface detection effect function is realized, ensuring the accuracy and automation of the detection.

[0016] Through the movable upper positioning tooling, the effect of displacement and recovery on the base surface can be achieved. When needed, it only needs to be moved above the ground detection mechanism for detection. When not in use, it can be stored by parallel displacement.

[0017] Through the bottom surface detection mechanism of multiple cameras and multiple light boards, a high-precision cover bottom surface detection function fixed on the bottom of the base is realized. While ensuring the effective use of the space inside the base and being able to fit enough cameras, sufficient detection accuracy is also achieved.

[0018] The lower positioning tooling realizes the conversion of the plane horizontal displacement of the lower active moving plate into the up and down displacement of the slope through the inclined slope side plates, thereby realizing the longitudinal displacement storage while also moving downward to avoid the upper positioning tooling. The lower active moving plate can also pull the lower positioning tooling through the vertical displacement guide column, while facilitating its downward guiding movement, ensuring the stability of the lower positioning tooling, and also playing a basic stabilizing effect to ensure the smoothness and stability of the lower positioning tooling during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of a side view of a double-tool internal replacement visual inspection device for cover plates;

[0020] Figure 2 It is a front top view schematic diagram of a double tooling internal replacement type visual inspection device for cover plates;

[0021] Figure 3 It is a schematic diagram of the inner rear side of a double-tool internal replacement type visual inspection equipment for cover plates;

[0022] In the figure; 1. base, 2. detection robot arm, 3. top surface moving lighting board, 4. top surface detection camera, 5. upper layer positioning tooling, 6. upper layer guide rail, 7. upper layer push rod, 8. lower layer positioning tooling, 9. vertical displacement guide column, 10. lower layer active shifting plate, 11. bottom surface detection camera, 12. bottom surface fixed lighting board, 13. displacement vertical pole, 14. oblique slope side plate, 15. lower layer guide rail, 16. lower layer push rod. DETAILED DESCRIPTION

[0023] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0024] Base 1, detection robot arm 2, top surface moving lighting plate 3, top surface detection camera 4, upper layer positioning tooling 5, upper layer guide rail 6, upper layer push rod 7, lower layer positioning tooling 8, vertical displacement guide column 9, lower layer active moving plate 10, bottom surface detection camera 11, bottom surface fixed lighting plate 12, displacement vertical pole 13, oblique slope side plate 14, lower layer guide rail 15, lower layer push rod 16.

[0025] like Figure 1 , 2 , as shown in 3;

[0026] A double-tool internally replaceable visual inspection device for a cover plate, wherein a top surface inspection mechanism is provided above the base 1 of the visual inspection device, and a bottom surface inspection mechanism is provided below the inside of the base 1, and is characterized in that a detection displacement opening is provided in the middle of the surface of the base 1, and an upper layer replacement tooling assembly is provided on the upper surface of the detection displacement opening of the base 1 in a longitudinal translational manner, and a lower layer replacement tooling assembly is provided below the inside of the detection displacement opening of the base 1 in a longitudinal front-to-back lifting and displacing manner, the bottom surface inspection mechanism is provided at the front bottom of the detection displacement opening, and the lower layer replacement tooling assembly is provided on the outside of both sides of the bottom surface inspection mechanism, the upper layer replacement tooling assembly includes an upper layer positioning tooling 5, an upper layer guide rail 6 and an upper layer push rod 7, and the lower layer replacement tooling assembly includes a lower layer Positioning tooling 8, vertical displacement guide column 9, lower active shifting plate 10, displacement upright 13, oblique slope side plate 14, lower guide rail 15 and lower push rod 16, the left and right sides of the bottom detection mechanism are symmetrically provided with oblique slope side plates 14, the surface of the oblique slope side plate 14 is high in front and low in the back and is provided with a slope guide groove, the inner side of the slope guide groove of the oblique slope side plate 14 is connected to the lower positioning tooling 8 through the displacement upright 13, the bottom surface of the lower positioning tooling 8 is connected to the lower active shifting plate 10 for up and down displacement through the vertical displacement guide rod, the surface of the lower active displacement plate is provided with a detection avoidance opening, and the left and right ends of the lower active displacement plate are longitudinally and horizontally moved by the lower guide rail 15 and the lower push rod 16. The shape of the base 1 is a rectangular frame table A base 1, a detection displacement opening is provided on the front side of the center of the surface of the base 1, a top surface detection mechanism is suspended above the top surface of the base 1, a hidden double-layer internal displacement detection cavity is provided inside the base 1, a bottom surface detection mechanism is horizontally provided at the front center of the internal displacement detection cavity, the top surface detection mechanism is a hoisting multi-axis mechanical arm detection mechanism, the top surface detection mechanism includes a detection mechanical arm 2, a top surface moving lighting plate 3 and a top surface detection camera 4, the detection mechanical arm 2 is a multi-axis multi-angle mechanical arm, the detection mechanical arm 2 is vertically hoisted and provided at the upper center of the base 1, the bottom end of the detection mechanical arm 2 is fixedly provided with a top surface moving lighting plate 3, and a top surface is provided in the middle of one side and the lower part of the top surface moving lighting plate 3 is parallel to each other. Detection camera 4, the top surface detection camera 4 is horizontally arranged below the top surface moving lighting plate 3 in the middle of the top surface moving lighting plate 3, the upper positioning fixture 5 is a flat plate type fixture, the bottom of the left and right ends of the upper positioning fixture 5 is connected to the upper guide rail 6 for longitudinal movement through a slider, one end of the upper positioning fixture 5 is connected to the upper push rod 7 in a longitudinally parallel manner, the upper guide rail 6 is symmetrically arranged on the left and right sides of the upper surface of the detection displacement opening, and the upper push rod 7 is longitudinally parallel to the outer side of the upper guide rail 6 on one side, the bottom surface detection mechanism includes a bottom surface detection camera 11 and a bottom surface fixed lighting plate 12, the bottom surface detection camera 11 is horizontally equidistantly arranged with a plurality of cameras arranged at the front bottom of the detection displacement opening,The bottom detection camera 11 is vertically arranged at the front bottom of the detection displacement opening, and two groups of bottom fixed lighting plates 12 are arranged parallel to each other on the front and rear sides of the bottom detection camera 11. The bottom fixed lighting plates 12 are in the shape of strip lighting plates, and the luminous surfaces of the bottom fixed lighting plates 12 are all horizontally upward. The shape of the oblique slope side plates 14 is a longitudinal trapezoidal plate with a high front and a low back. The middle part of the surface of the oblique slope panel is provided with a slope guide groove obliquely facing forward and high back. The front and rear ends of the slope guide groove are longitudinally and horizontally parallel to each other and are provided with positioning flat grooves. The left and right sides of the oblique slope panel are longitudinally symmetrically provided with lower guide rails 15, and the bottom surface of the lower guide rails 15 is higher than the highest surface of the oblique slope panel. The upper part of the lower guide rails 15 is longitudinally movable with the lower active moving plate 10 through a slider. The lower active shifting plate 10 is connected to the lower push rod 16 in a longitudinally parallel outer side, and the lower guide rail 15 on one side is provided with a lower push rod 16 in a longitudinally parallel outer side. The shape of the lower positioning fixture 8 is a flat plate fixture. The left and right ends of the bottom of the lower positioning fixture 8 are vertically fixed with displacement uprights 13. The top of the displacement uprights 13 is fixedly connected to the bottom surface of the lower positioning fixture 8. The bottom end of the displacement uprights 13 is fixedly connected to the inner side of the slope guide groove. The bottom of the lower positioning fixture 8 is provided with a plurality of vertical displacement guide pillars 9 in a vertical manner on both sides. The outer side of the vertical displacement guide pillars 9 is inserted and nested through the surface of the lower active shifting plate through a guide ring. The front and rear surfaces of the lower active shifting plate 10 are penetrated with a plurality of guide rings.

[0027] Implementation examples;

[0028] During use, when the upper positioning tool 5 is needed, the lower positioning tool 8 is first displaced by the lower push rod 16 along the lower guide rail 15 through the lower main moving plate, and the lower main moving plate moves backward. At the same time, the lower positioning tool 8 is pulled backward by the vertical displacement guide column 9. During the pulling process, the lower positioning tool 8 is displaced downward along the inclined slope panel through the displacement vertical rod 13. In the process of passing through the slope downward, the lower positioning tool 8 is stably moved downward through the vertical displacement guide rod, thereby finally completing the storage of the lower positioning tool 8 on the inner side of the base 1. At this time, it is only necessary to move the upper positioning tool 5 forward along the upper guide rail through the upper push rod 7 and move it to above the bottom surface detection camera 11 to realize the detection and use of the upper positioning tool 5.

[0029] When the lower positioning tool 8 needs to be used, the above operation can be reversed to push out the lower positioning tool 8 and realize its use.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-tool internal replacement visual inspection device for a cover plate, wherein a top surface inspection mechanism is provided above the base of the visual inspection device, and a bottom surface inspection mechanism is provided below the base, characterized in that: The middle part of the surface of the base is provided with a detection displacement opening, the upper surface of the detection displacement opening of the base is provided with an upper replacement tooling assembly in a longitudinal translational manner, and the lower part of the detection displacement opening of the base is provided with a lower replacement tooling assembly in a longitudinal forward and backward lifting and displacement manner. The bottom surface detection mechanism is arranged at the front bottom of the detection displacement opening, and the lower replacement tooling assembly is arranged on the outside of both sides of the bottom surface detection mechanism. The upper replacement tooling assembly includes an upper positioning tooling, an upper guide rail and an upper push rod, and the lower replacement tooling assembly includes a lower positioning tooling, a vertical displacement guide column, a lower main A movable moving plate, a displacement upright, an inclined slope side plate, a lower guide rail and a lower push rod, the left and right sides of the bottom surface detection mechanism are symmetrically provided with inclined slope side plates, the surface of the inclined slope side plate is high in the front and low in the back and is provided with a slope guide groove, the inner side of the slope guide groove of the inclined slope side plate is connected to the lower positioning tooling through the displacement upright, the bottom surface of the lower positioning tooling is connected to the lower active moving plate for up and down displacement through the vertical displacement guide rod, the surface of the lower active displacement plate is provided with a detection avoidance opening, and the left and right ends of the lower active displacement plate are longitudinally and horizontally moved by the lower guide rail and the lower push rod.

2. The double-tool internal replacement visual inspection equipment for cover plates according to claim 1 is characterized in that: The base is shaped like a rectangular frame table-type base, a displacement detection opening is provided in a conductive manner on the front side of the center of the surface of the base, a top surface detection mechanism is suspended above the top surface of the base, a hidden double-layer internal displacement detection cavity is provided inside the base, and a bottom surface detection mechanism is provided horizontally in the front center of the internal displacement detection cavity.

3. The double-tool internal replacement visual inspection equipment for cover plates according to claim 1 is characterized in that: The top surface detection mechanism is a hoisted multi-axis robotic arm detection mechanism, which includes a detection robotic arm, a top surface movable lighting board and a top surface detection camera. The detection robotic arm is a multi-axis multi-angle robotic arm. The detection robotic arm is vertically hoisted and provided with an upper center of a base. The bottom end of the detection robotic arm is fixedly provided with a top surface movable lighting board. A top surface detection camera is provided in parallel with each other in the middle of the lower side of one side of the top surface movable lighting board. The top surface detection camera is horizontally arranged below the top surface movable lighting board towards the middle of the top surface movable lighting board.

4. The double-tool internal replacement visual inspection equipment for cover plates according to claim 1 is characterized in that: The upper positioning tooling is a flat plate tooling, and the bottoms of the left and right ends of the upper positioning tooling are connected to the upper guide rails for longitudinal movement through sliders. The outer side of one end of the upper positioning tooling is connected to the upper push rod in a longitudinally parallel manner. The upper guide rails are symmetrically arranged on the left and right sides of the upper surface of the detection displacement opening, and the outer side of the upper guide rail on one side is provided with an upper push rod in a longitudinally parallel manner.

5. The double-tool internal replacement visual inspection equipment for cover plates according to claim 1, characterized in that: The bottom surface detection mechanism includes a bottom surface detection camera and a bottom surface fixed lighting plate. The bottom surface detection cameras are arranged horizontally and equidistantly at the front bottom of the detection displacement opening. The bottom surface detection camera is arranged vertically upward at the front bottom of the detection displacement opening. Two groups of bottom surface fixed lighting plates are arranged parallel to each other on the front and rear sides of the bottom surface detection camera. The bottom surface fixed lighting plates are in the shape of strip lighting plates, and the luminous surfaces of the bottom surface fixed lighting plates are all horizontally upward.

6. The double-tool internal replacement visual inspection equipment for cover plates according to claim 1, characterized in that: The shape of the inclined slope side plate is a longitudinal trapezoidal plate with a high front and a low rear. A slope guide groove with a high front and a low rear is provided in the middle of the surface of the inclined slope panel. The front and rear ends of the slope guide groove are provided with positioning flat grooves in a longitudinal and horizontal parallel manner. The left and right sides of the inclined slope panel are provided with lower guide rails in a longitudinally symmetrical manner. The bottom surface of the lower guide rail is higher than the highest surface of the inclined slope panel. The upper part of the lower guide rail is horizontally connected to the lower active moving plate in a longitudinally movable manner through a slider. The outer side of one end of the lower active moving plate is connected to the lower push rod in a longitudinally parallel manner. The outer side of the lower guide rail on one side is provided with a lower push rod in a longitudinally parallel manner.

7. The double-tool internal replacement visual inspection equipment for cover plates according to claim 1, characterized in that: The shape of the lower positioning tooling is a flat plate-type tooling, and the left and right ends of the bottom of the lower positioning tooling are vertically fixed with displacement uprights, the top of the displacement uprights is fixedly connected to the bottom surface of the lower positioning tooling, and the bottom end of the displacement uprights is guided and fixedly connected on the inner side of the slope guide groove, and a number of vertical displacement guide columns are vertically arranged on the front and rear sides of the bottom of the lower positioning tooling, and the outer sides of the vertical displacement guide columns are inserted and nested through the surface of the lower active shifting plate through guide rings, and a number of guide rings are penetrated on the front and rear surfaces of the lower active shifting plate.

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