A loading and unloading device for CNC machine tools

Abstract

This invention discloses a loading and unloading device for CNC machine tools, relating to the field of CNC machine tool loading and unloading technology; it includes: a column fixedly connected to the top center of a horizontal plate, a drive motor fixedly connected to the side of the horizontal plate, sliding grooves respectively opened on both sides of the horizontal plate, a positioning component fixedly connected to the bottom of the horizontal plate, two sets of support plates, the support plates being connected to the horizontal plate, an adjustment groove opened at the bottom of the support plates, a servo motor fixedly connected to the side of the support plates away from the column, a clamp fixedly connected to the side of the support plates near the column, a support component connecting the two sets of support plates, an adjustment seat slidingly connected in the adjustment groove, and an extension frame fixedly connected to the side of the adjustment seat away from the column; the beneficial effects are: the positioning component, support component, and limiting component reinforce and support different positions of the support plate, thereby preventing changes in the horizontal height or angle of the support plate and ensuring the stability of the clamp for holding the processing element.

Description

Technical Field

[0001] This invention belongs to the field of loading and unloading of CNC machine tools, and specifically relates to a loading and unloading device for CNC machine tools. Background Technology

[0002] CNC machine tools are short for numerical control machine tools. They are automated machine tools equipped with a program control system. This control system can logically process programs with control codes, decode them, represent them with coded numbers, input them to the CNC device through an information carrier, and after calculation and processing, the CNC device sends out various control signals to control the machine tool's movements. It automatically processes parts according to the shape and size required by the drawings. Among them, the gantry fixture is an indispensable key device of CNC machine tools.

[0003] In the prior art, the truss fixture mainly consists of a fixture, a column, and a truss. The truss drives the fixture to clamp the processing element, and the column drives the truss to move, thereby enabling the processing element to be loaded and unloaded on the CNC machine tool. The two support columns of the truss need to maintain the same height to ensure the horizontal stability of the processing element.

[0004] However, when the gantry fixture loads and unloads the workpiece for an extended period of time, the two support columns of the gantry may experience changes in horizontal height or angle. This causes the workpiece to tilt horizontally during loading and unloading, and the gantry fixture may not be able to hold the workpiece securely, thus affecting the performance of the gantry fixture on the CNC machine tool. Summary of the Invention

[0005] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a loading and unloading device for CNC machine tools. This device solves the problem that when a gantry fixture loads and unloads machining elements for an extended period, the two support columns of the gantry may experience changes in horizontal height or angle. This causes the machining elements to tilt horizontally during loading and unloading, and the gantry fixture may not hold the machining elements securely, thus affecting the performance of the gantry fixture on the CNC machine tool.

[0006] To achieve the above objectives, an embodiment of the first aspect of the present invention provides a CNC machine tool loading and unloading device, comprising:

[0007] A horizontal plate, with a column fixedly connected to the top center of the horizontal plate, a drive motor fixedly connected to the side end of the horizontal plate, sliding grooves opened on both sides of the horizontal plate, and a positioning component fixedly connected to the bottom end of the horizontal plate.

[0008] The support plate comprises two sets, which are connected to the horizontal plate. An adjustment groove is provided at the bottom of each support plate. A servo motor is fixedly connected to the side of the support plate away from the column, and a clamp is fixedly connected to the side of the support plate near the column. A support assembly is connected between the two sets of support plates.

[0009] An adjusting seat is slidably connected within an adjusting groove. An extension frame is fixedly connected to the side of the adjusting seat away from the column. Two sets of extension frames are provided, and a limit assembly is fixedly connected between the two sets of extension frames.

[0010] As a further embodiment of the present invention: the support plate is perpendicular to the bottom end of the horizontal plate, and two sets of connecting plates are fixedly connected to the top end of the support plate in a direction parallel to the column. The connecting plates are slidably connected to the sliding groove. A guide plate is provided opposite to the two sets of connecting plates. The two ends of the guide plate are fixedly connected to the connecting plate respectively, and the guide plate is slidably connected to the positioning component.

[0011] As a further aspect of the present invention: two sets of positioning components are provided, and a central base is fixedly connected between the two sets of positioning components. The positioning components include: a side plate and a guide rod. The side plate is fixedly connected to the side end of the column away from the horizontal plate. Two sets of guide rods are fixedly connected to the side plate along the width direction of the horizontal plate. The guide plate has a guide hole through the guide plate in a direction parallel to the center line of the guide rod. The guide hole is slidably connected to the guide rod.

[0012] As a further embodiment of the present invention: the top of the central base is vertically fixed to the horizontal plate, and the two ends of the central base are respectively fixedly connected to two sets of guide rods.

[0013] As a further embodiment of the present invention: the support assembly has a retaining base fixedly connected to both ends, and the retaining base is fixedly connected to the support plate at the end away from the support assembly. The support assembly includes: a support column, a spring, and a cooperating support column. The support column is fixedly connected to the retaining base in a direction perpendicular to the longitudinal surface of the support plate. The support column and the cooperating support column are sleeved together. The cooperating support column is fixedly connected to another set of retaining bases at the end away from the support column in a direction perpendicular to the longitudinal surface of the support plate. The spring is located between the retaining base and the cooperating support column, and both ends of the spring are fixedly connected to the retaining base and the cooperating support column, respectively.

[0014] As a further embodiment of the present invention: support plates are respectively provided around the support base along the center line of the support base, the support plates are inclined away from the support base, and the two ends of the support plates are fixedly connected to the support base and the support plate respectively.

[0015] As a further embodiment of the present invention: a support hole is provided inside the supporting column, the supporting hole is slidably connected to the supporting column, a semi-cylinder is fixedly connected around the center line of the supporting column around the inner wall of the supporting hole, a semi-circular groove is provided around the center line of the supporting column, the semi-cylinder is semi-cylindrical in shape, and the semi-cylinder is slidably connected to the semi-circular groove.

[0016] As a further aspect of the present invention: the adjusting seat has a threaded hole in the longitudinal direction, and a threaded rod is threadedly connected to the threaded hole.

[0017] As a further embodiment of the present invention: the limiting component includes: a limiting rod, a limiting mating rod, and a limiting clamp. Two sets of limiting rods are provided, and the two sets of limiting rods are respectively fixedly connected to both ends of the extension frame. Two sets of limiting mating rods are provided, and the two sets of limiting mating rods are respectively fixedly connected to both ends of the extension frame. The limiting mating rod and the limiting rod are sleeved together. The limiting clamp is fixedly connected to one end of the extension frame near the column.

[0018] The beneficial effects of this invention are:

[0019] 1. The positioning component, support component, and limiting component reinforce and support different positions of the support plate, thereby preventing changes in the horizontal height or angle of the support plate and ensuring the stability of the fixture in holding the processing components.

[0020] 2. When the support plate moves, the support plate drives the adjustment seat to move, and the adjustment seat drives the limiting component to move through the extension frame. In order to prevent the fixture from being unstable when the positioning component and the support component fail, the limiting component clamps the bottom of the processing component a second time to further prevent the processing component from falling off the fixture. Attached Figure Description

[0021] The invention will now be further described with reference to the accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 The right side shows the overall structure of the present invention;

[0024] Figure 3 This is a cross-sectional view (AA) of the overall structure of the present invention;

[0025] Figure 4 This is a schematic diagram of the connecting plate structure of the present invention;

[0026] Figure 5 This is a schematic diagram of the support column structure of the present invention;

[0027] Figure 6 This is a schematic diagram of the adjusting seat structure of the present invention.

[0028] Illustration: 1. Upright column; 2. Horizontal plate; 3. Slide groove; 4. Side plate; 5. Support column; 6. Servo motor; 7. Extension frame; 8. Limiting rod; 9. Limiting mating rod; 10. Limiting clamp; 11. Clamp; 12. Supporting plate; 13. Supporting base; 14. Central base; 15. Guide rod; 16. Drive motor; 17. Connecting plate; 18. Adjusting groove; 19. Threaded rod; 20. Support column; 21. Spring; 22. Mating support column; 23. Support hole; 25. Guide plate; 26. Guide hole; 27. Semicircular groove; 28. Semicircular cylinder; 29. ​​Adjusting seat; 30. Threaded hole. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] like Figures 1 to 6 As shown, a CNC machine tool loading and unloading device includes: a horizontal plate 2, a support plate 5, and an adjusting seat 29.

[0031] A column 1 is fixedly connected to the top center of the horizontal plate 2, a drive motor 16 is fixedly connected to the side of the horizontal plate 2, and sliding grooves 3 are respectively opened on both sides of the horizontal plate 2. A positioning component is fixedly connected to the bottom of the horizontal plate 2. The horizontal plate 2 belongs to the connection structure in the prior art. The column 1 drives the support plate 5 to move through the horizontal plate 2, thereby realizing the effect of loading and unloading the processing components. The drive motor 16 fixedly connected to the top of the horizontal plate 2 has the function of driving the support plate 5. In order to prevent the support plate 5 from changing its horizontal height or angle during long-term operation, the positioning component reinforces the connection between the top of the support plate 5 and the horizontal plate 2.

[0032] Two sets of support plates 5 are provided. The support plates 5 are connected to the horizontal plate 2. An adjustment groove 18 is opened at the bottom of the support plate 5. A servo motor 6 is fixedly connected to the side of the support plate 5 away from the column 1, and a clamp 11 is fixedly connected to the side of the support plate 5 near the column 1. A support assembly is connected between the two sets of support plates 5. The drive motor 16 drives the support plate 5 to move at the bottom of the horizontal plate 2. The clamp 11 on the support plate 5 clamps the processing element. The support assembly always ensures that the support plate 5 and the horizontal plate 2 move perpendicularly. At the same time, the support assembly prevents changes in the horizontal height or angle between the two sets of support plates 5. The positioning assembly reinforces the middle of the two sets of support plates 5.

[0033] The adjusting seat 29 is slidably connected within the adjusting groove 18. An extension frame 7 is fixedly connected to the side of the adjusting seat 29 away from the column 1. Two sets of extension frames 7 are provided, and a limit component is fixedly connected between the two sets of extension frames 7. The servo motor 6 can drive the adjusting seat 29 to move within the adjusting groove 18. When the support plate 5 moves, the support plate 5 drives the adjusting seat 29 to move. The adjusting seat 29 drives the limit component to move through the extension frame 7. In order to avoid the phenomenon of unstable clamping of the processing element by the fixture 11 when the positioning component and the support component fail, the limit component performs secondary clamping on the bottom of the processing element to further prevent the processing element from falling off the fixture 11. At the same time, the limit component reinforces the bottom of the support plate 5, thereby achieving overall reinforcement of the support plate 5.

[0034] In some specific implementations, the support plate 5 is perpendicular to the bottom end of the horizontal plate 2. Two sets of connecting plates 17 are fixedly connected to the top end of the support plate 5 in a direction parallel to the column 1. The connecting plates 17 are slidably connected to the slide groove 3. A guide plate 25 is provided opposite the two sets of connecting plates 17. The two ends of the guide plate 25 are fixedly connected to the connecting plates 17 respectively. The guide plate 25 is slidably connected to the positioning component. In the prior art, the support plate 5 needs to be perpendicular to the bottom end of the horizontal plate 2 to ensure that the support plate 5 will not deviate at an angle when it moves at the bottom end of the horizontal plate 2. The connecting plate 17 fixedly connected to the top end of the support plate 5 serves as a connecting structure. When the drive motor 16 drives the support plate 5 to move, the connecting plate 17 on the support plate 5 slides along the slide groove 3. However, when the connecting plate 17 is subjected to force for a long time, the connecting plate 17 will deform. In order to further strengthen the connecting plate 17, a guide plate 25 is fixedly connected between the two sets of connecting plates 17. The guide plate 25 supports and limits the two sets of connecting plates 17, thereby ensuring the stability of the top of the support plate 5.

[0035] In some specific implementations, two sets of positioning components are provided, with a central base 14 fixedly connected between the two sets of positioning components. Each positioning component includes a side plate 4 and guide rods 15. The side plate 4 is fixedly connected to the side end of the column 1 away from the horizontal plate 2. Two sets of guide rods 15 are fixedly connected to the side plate 4 along the width direction of the horizontal plate 2. Guide plates 25 have through holes 26 in a direction parallel to the center line of the guide rods 15. The guide holes 26 are slidably connected to the guide rods 15. To ensure that the positioning effect of the positioning components is transferred to the support plate 5, the positioning components... It should be noted that the central base 14 and the side plate 4 are fixed to the bottom of the horizontal plate 2. The central base 14 and the side plate 4 support and fix the two ends of the guide rod 15 respectively. The guide hole 26 opened on the guide plate 25 slides along the guide rod 15. At the same time, the guide rod 15 supports the guide hole 26. The support and fixing effect provided by the horizontal plate 2 is further transferred to the connecting plate 17 through the positioning component. When the connecting plate 17 deforms in the vertical direction, the positioning component further ensures the stability of the connecting plate 17.

[0036] In some specific implementations, the top of the central base 14 is vertically fixed to the horizontal plate 2, and the two ends of the central base 14 are respectively fixedly connected to two sets of guide rods 15. In order to avoid the guide rods 15 having only one end fixedly supported by the side plate 4, the other end of the guide rods 15 is supported and fixed by the central base 14.

[0037] In some specific embodiments, the support assembly has abutment bases 13 fixedly connected to both ends. The abutment bases 13 are fixedly connected to the support plate 5 at the end furthest from the support assembly. The support assembly includes a support column 20, a spring 21, and a cooperating support column 22. The support column 20 is fixedly connected to the abutment base 13 in a direction perpendicular to the longitudinal plane of the support plate 5. The support column 20 and the cooperating support column 22 are sleeved together. The cooperating support column 22 is fixedly connected to another set of abutment bases 13 at the end furthest from the support column 20 in a direction perpendicular to the longitudinal plane of the support plate 5. The spring 21 is located between the abutment bases 13 and the cooperating support column 22, with both ends of the spring 21 connected to the abutment bases 13. The base 13 and the cooperating support column 22 are fixedly connected. In order to ensure that the middle of the support plate 5 is reinforced, when the support plate 5 moves, the support assembly is compressed between the two sets of support plates 5. The support column 20 is inserted into the cooperating support column 22. The support column 20 and the cooperating support column 22 reinforce and support the support plate 5, and prevent the middle of the support plate 5 from changing in horizontal height or angle. In order to prevent the cooperating support column 22 from shifting angle, the spring 21 is always compressed. The spring 21 provides support force against the base 13 and the cooperating support column 22, further strengthening the cooperating support column 22 to be in a direction perpendicular to the support plate 5.

[0038] In some specific implementations, abutment plates 12 are respectively provided around the center line of the abutment base 13. The abutment plates 12 are inclined away from the abutment base 13. The two ends of the abutment plates 12 are fixedly connected to the abutment base 13 and the support plate 5 respectively. In order to prevent the abutment base 13 from deforming due to long-term stress, the abutment plates 12 are provided around the abutment base 13. The two ends of the abutment plates 12 are fixed to the abutment base 13 and the support plate 5, and the cross-section forms a triangle. According to the geometric principle of triangle, the abutment plates 12 further reinforce the abutment base 13 and prevent the support components from shifting due to deformation of the abutment base 13.

[0039] In some specific implementations, a support hole 23 is provided inside the support column 22, and the support hole 23 is slidably connected to the support column 20. A semi-cylinder 28 is fixedly connected around the center line of the support column 20 around the inner wall of the support hole 23. A semi-circular groove 27 is provided around the center line of the support column 22 around the support column 20. The semi-cylinder 28 is semi-cylindrical in shape and is slidably connected to the semi-circular groove 27. In order to further improve the limiting support provided by the fitting connection between the support column 22 and the support column 20 to the support plate 5, The supporting effect, the semi-circular cylinder 28 and the semi-circular groove 27 fixedly connected to the inner wall of the supporting column 22, increases the contact area between the supporting column 22 and the supporting column 20, and strengthens the limiting effect provided by the supporting column 22 and the supporting column 20 on the supporting plate 5. At the same time, the semi-circular cylinder 28 and the semi-circular groove 27 avoid the problem of deformation of the supporting column 22 and the supporting column 20. When the supporting column 20 is inserted into the supporting hole 23 opened in the supporting column 22, the semi-circular cylinder 28 slides along the semi-circular groove 27.

[0040] In some specific implementations, the adjusting seat 29 has a threaded hole 30 in the longitudinal direction, and a threaded rod 19 is threadedly connected to the threaded hole 30. The servo motor 6 drives the threaded rod 19 to rotate, and the threaded rod 19 drives the adjusting seat 29 to move through the threaded connection with the threaded hole 30, thereby realizing the movement of the adjusting seat 29 through the extension frame 7 to drive the limiting component.

[0041] In some specific implementations, the limiting assembly includes: a limiting rod 8, a limiting mating rod 9, and a limiting clamp 10. Two sets of limiting rods 8 are provided, each fixedly connected to both ends of the extension frame 7. Two sets of limiting mating rods 9 are also provided, each fixedly connected to both ends of the extension frame 7. The limiting mating rod 9 and the limiting rod 8 are sleeved together. The limiting clamp 10 is fixedly connected to the end of the extension frame 7 near the column 1. The limiting clamp 10 on the limiting assembly clamps the bottom of the processing element. The sleeved connection between the limiting mating rod 9 and the limiting rod 8 reinforces the bottom of the support plate 5. When the thickness of the processing element changes, the adjusting seat 29 can adjust the height of the limiting assembly via the extension frame 7, thereby improving the applicability of the limiting assembly.

[0042] To facilitate understanding of this solution by those skilled in the art, its working principle is explained below in conjunction with specific application scenarios:

[0043] When the drive motor 16 drives the support plate 5 to move at the bottom of the horizontal plate 2, the connecting plate 17 fixedly connected to the top of the support plate 5 slides along the slide groove 3, and the guide plate 25 fixedly connected to the connecting plate 17 slides along the guide rod 15. The positioning component in the middle of the support plate 5 is compressed, and the support column 20 of the positioning component is inserted into the support hole 23 of the matching support column 22. The limiting rod 8 at the bottom of the support plate 5 is inserted into the limiting matching rod 9. When the connecting plate 17 is subjected to force for a long time, the connecting plate 17 will deform. The guide plate 25 reinforces and supports the connecting plate 17 to prevent the connection from deforming. The plate 17 deforms to ensure the stability of the top of the support plate 5. If the positioning component fails to reinforce, the sleeve connection of the support column 20 and the cooperating support column 22 supports the middle of the support plate 5 to ensure the stability of the middle of the support plate 5. The limiting rod 8 and the limiting cooperating rod 9 limit the bottom of the support plate 5 to ensure the stability of the bottom of the support plate 5. Therefore, the positioning component, the support component and the limiting component reinforce and support different positions of the support plate 5 to avoid changes in the horizontal height or angle of the support plate 5, and ensure the stability of the clamp 11 for clamping the processing element.

[0044] It should be noted that: when the support plate 5 moves, it drives the adjusting seat 29 to move, and the adjusting seat 29 drives the limiting component to move through the extension frame 7. To prevent the fixture 11 from being unstable in holding the processing element when both the positioning component and the support component fail, the limiting component provides a secondary clamping of the bottom of the processing element, further preventing the processing element from falling off the fixture 11. The central base 14 and the side plate 4 are fixed to the bottom of the horizontal plate 2, and the central base 14 and the side plate 4 respectively support the two ends of the guide rod 15. For support and fixation, the guide hole 26 on the guide plate 25 slides along the guide rod 15. Simultaneously, the guide rod 15 supports the guide hole 26, further transferring the support and fixation provided by the horizontal plate 2 to the connecting plate 17 via the positioning component. When the connecting plate 17 deforms vertically, the positioning component further ensures the stability of the connecting plate 17. To prevent deformation of the base 13 due to prolonged stress, abutment plates 12 are provided around the base 13. The two ends of the abutment plates 12 connect with the base 13 and the support plate 5. The fixed cross-section forms a triangle. According to the geometric principles of triangles, the supporting plate 12 further reinforces the supporting base 13, preventing deformation of the supporting base 13 that could cause the support assembly to shift. To further improve the limiting support effect provided by the sleeved connection between the supporting columns 22 and 20 to the supporting plate 5, the semi-circular cylinder 28 and semi-circular groove 27, fixedly connected to the inner wall of the supporting column 22, limit the connection, increasing the contact area between the supporting columns 22 and 20 and strengthening the support of the supporting columns 22 and 20 to the supporting plate 5. The semi-cylinder 28 and the semi-circular groove 27 provide a limiting function. At the same time, the semi-cylinder 28 and the semi-circular groove 27 prevent the deformation of the supporting column 22 and the supporting column 20. When the supporting column 20 is inserted into the supporting hole 23 opened in the supporting column 22, the semi-cylinder 28 slides along the semi-circular groove 27. The limiting rod 9 and the limiting rod 8 are connected by a sleeve to achieve the effect of reinforcing the bottom of the supporting plate 5. When the thickness of the processed element changes, the adjusting seat 29 can drive the limiting component to adjust its height through the extension frame 7, thereby improving the applicability of the limiting component.

[0045] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A loading and unloading device for a CNC machine tool, characterized in that, include: A horizontal plate (2) is fixedly connected to a column (1) at the top center of the horizontal plate (2), a drive motor (16) is fixedly connected to the side end of the horizontal plate (2), a sliding groove (3) is opened on both sides of the horizontal plate (2), and a positioning component is fixedly connected to the bottom end of the horizontal plate (2). Support plate (5), two sets of support plates (5) are provided, the support plate (5) is connected to the horizontal plate (2), the bottom end of the support plate (5) is provided with an adjustment groove (18), a servo motor (6) is fixedly connected to the side end of the support plate (5) away from the column (1), and a clamp (11) is fixedly connected to the side end of the support plate (5) near the column (1). A support assembly is connected between the two sets of support plates (5); and Adjustment seat (29), the adjustment seat (29) is slidably connected in adjustment groove (18), and an extension frame (7) is fixedly connected to the side end of the adjustment seat (29) away from the column (1). The extension frame (7) is provided in two sets, and a limit component is fixedly connected between the two sets of extension frames (7). The support plate (5) is perpendicular to the bottom end of the horizontal plate (2). Two sets of connecting plates (17) are fixedly connected to the top of the support plate (5) in a direction parallel to the column (1). The connecting plates (17) are slidably connected to the slide groove (3). A guide plate (25) is provided opposite to the two sets of connecting plates (17). The two ends of the guide plate (25) are fixedly connected to the connecting plates (17) respectively. The guide plate (25) is slidably connected to the positioning component. The positioning components are provided in two sets, and a central base (14) is fixedly connected between the two sets of positioning components. The positioning components include: a side plate (4) and a guide rod (15). The side plate (4) is fixedly connected to the side end of the column (1) away from the horizontal plate (2). The side plate (4) is fixedly connected to two sets of guide rods (15) along the width direction of the horizontal plate (2). The guide plate (25) has a guide hole (26) through the guide plate (25) in a direction parallel to the center line of the guide rod (15). The guide hole (26) is slidably connected to the guide rod (15). The top of the central base (14) is vertically fixed on the horizontal plate (2), and the two ends of the central base (14) are respectively fixedly connected to two sets of guide rods (15).

2. The loading and unloading device for a CNC machine tool according to claim 1, characterized in that, The support assembly has a support base (13) fixedly connected to both ends. The support base (13) is fixedly connected to the support plate (5) at the end away from the support assembly. The support assembly includes a support column (20), a spring (21) and a cooperating support column (22). The support column (20) is fixedly connected to the support base (13) in a direction perpendicular to the longitudinal plane of the support plate (5). The support column (20) and the cooperating support column (22) are sleeved together. The cooperating support column (22) is fixedly connected to another set of support bases (13) at the end away from the support column (20) in a direction perpendicular to the longitudinal plane of the support plate (5). The spring (21) is between the support base (13) and the cooperating support column (22). The two ends of the spring (21) are fixedly connected to the support base (13) and the cooperating support column (22) respectively.

3. The CNC machine tool loading and unloading device according to claim 2, characterized in that, The abutment base (13) is surrounded by abutment plates (12) around its center line. The abutment plates (12) are inclined away from the abutment base (13), and the two ends of the abutment plates (12) are fixedly connected to the abutment base (13) and the support plate (5) respectively.

4. A CNC machine tool loading and unloading device according to claim 2, characterized in that, The supporting support column (22) has a supporting hole (23) inside. The supporting hole (23) is slidably connected to the supporting column (20). A semi-cylinder (28) is fixedly connected around the center line of the supporting column (20) around the inner wall of the supporting hole (23). A semi-circular groove (27) is opened around the center line of the supporting column (22) around the supporting column (20). The semi-cylinder (28) is semi-cylindrical in shape and is slidably connected to the semi-circular groove (27).

5. A CNC machine tool loading and unloading device according to claim 1, characterized in that, The adjusting seat (29) has a threaded hole (30) in the longitudinal direction, and a threaded rod (19) is connected to the threaded hole (30) internally.

6. A CNC machine tool loading and unloading device according to claim 1, characterized in that, The limiting assembly includes: a limiting rod (8), a limiting mating rod (9), and a limiting clamp (10). The limiting rod (8) is provided in two sets, and the two sets of limiting rods (8) are respectively fixedly connected to both ends of the extension frame (7). The limiting mating rod (9) is provided in two sets, and the two sets of limiting mating rods (9) are respectively fixedly connected to both ends of the extension frame (7). The limiting mating rod (9) and the limiting rod (8) are sleeved together. The limiting clamp (10) is fixedly connected to one end of the extension frame (7) near the column (1).

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