Workpiece blanking assembly and numerical control machine tool

Abstract

The application relates to the technical field of numerical control machine tools, in particular to a workpiece blanking assembly and a numerical control machine tool, wherein the workpiece blanking assembly comprises a machine body, a guide plate is fixedly connected in the machine body, four connecting blocks are fixedly connected to the inner lower side of the guide plate, movable plates are rotationally connected to the interiors of the connecting blocks on the front and back sides, a backing plate is installed at the top end of the movable plate, and a cleaning brush is slidably connected to the inner wall lower side of the guide plate. The bottom plate of the guide plate is designed in two layers, the upper layer can rotate, a plurality of blanking grooves are formed in the lower layer, when the upper layer is attached to the lower layer, the upper layer can drive the cleaning brush to sweep the debris on the top of the lower layer into the blanking grooves, at this time, the workpiece falls on the upper layer, the workpiece can be buffered, and the debris can prevent the workpiece from being damaged, the guide plate can achieve the effect of one object serving multiple purposes, and the economic efficiency is high.

Description

Technical Field

[0001] This invention relates to the field of CNC machine tool technology, specifically to a workpiece blanking assembly and a CNC machine tool. Background Technology

[0002] In the production and processing of automotive parts, CNC machine tools are generally used. These tools can logically process programs with control codes or other symbolic instructions, decode them, represent them with coded numbers, and input them into the CNC device via an information carrier. After processing, the CNC device sends various control signals to control the machine tool's movements, automatically machining the workpiece according to the shape and size required by the drawings. The machined workpiece then falls into the unloading assembly, awaiting the next step of processing.

[0003] In the prior art, the unloading component is generally a guide plate. In use, it is installed on the underside of the machining tool. When the machining tool comes into contact with the workpiece inside the fixture, the unloading component can move to the underside of the fixture. After machining is completed, the fixture releases the workpiece, allowing it to fall directly onto the guide plate and slide down the guide plate into the collection box, where it awaits the next processing step.

[0004] However, in actual use, since the guide plate is located under the fixture when machining the workpiece, the debris generated during machining falls and adheres to the guide plate. The accumulation of debris not only causes the guide plate surface to become uneven or blocked, making material unloading difficult, but also causes damage to the workpiece surface by rubbing against the falling workpiece, thus affecting the machining quality of the workpiece and making it less economical to use. Therefore, those skilled in the art now propose a workpiece unloading component and CNC machine tool to solve the problem of debris adhering to the guide plate, thereby causing poor workpiece unloading and affecting machining quality. Summary of the Invention

[0005] The purpose of this invention is to provide a workpiece blanking assembly and a CNC machine tool to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a workpiece unloading assembly, comprising a machine body, a guide plate fixedly connected inside the machine body, four connecting blocks fixedly connected inside the lower side of the guide plate, movable plates rotatably connected inside the connecting blocks on both the front and rear sides, a pad plate installed at the top of the movable plate, a cleaning brush slidably connected to the lower side of the inner wall of the guide plate, and multiple unloading grooves opened inside the lower side of the guide plate.

[0007] Preferably, the movable plate has sliding grooves on both the front and rear sides, and a slider is slidably connected inside the sliding groove. The slider is a telescopic rod, and an extrusion block is fixedly connected to the bottom end of the slider. An installation bracket is fixedly connected to the adjacent side of the extrusion block on both the front and rear sides. The guide plate has a correction groove on the lower side of its inner wall, and an extrusion groove is formed on both the front and rear sides of the guide plate. A spring is fixedly connected to the inner wall of the extrusion groove, and the other end of the spring is fixedly connected to the extrusion block.

[0008] Preferably, the mounting bracket has a placement groove inside, the inside of the placement groove is slidably connected to the outside of the cleaning brush, and a plurality of rubber blocks are fixedly connected to the lower side of the inner wall of the cleaning brush, and the other end of the rubber blocks is fixedly connected to the upper side of the inner wall of the placement groove.

[0009] Preferably, the bottom four corners of the guide plate are provided with slots, the slots are fitted with inserts, the inserts are fixedly connected with multiple sealing rings, the sealing rings fit into the slots, the bottom of the inserts are fixedly connected with a collection box, the top of the collection box fits into the bottom of the guide plate, and the collection box is connected to the discharge trough.

[0010] Preferably, the upper side of the movable plate is provided with a mounting groove, the mounting plate is slidably connected inside the mounting groove, the mounting plate is provided with a plurality of protrusions on the outside, the protrusions fit into the inside of the mounting groove, and the top end of the mounting plate is fixedly connected to the bottom end of the pad.

[0011] Preferably, four connecting posts are fixedly connected to the upper inner wall of the guide plate, and a retaining ring 1 is fixedly connected to the top of the connecting posts. The retaining ring 1 has a retaining groove inside. A retaining ring 2 is hinged to the upper side of the retaining ring 1, and a retaining block is fixedly connected to the lower side of the retaining ring 2. Connecting shafts are rotatably connected to both the front and rear sides of the movable plate. Multiple limiting grooves are opened on the outer periphery of the connecting shafts. Limiting strips are inserted into the limiting grooves. The limiting strip on the left and right sides that are far apart is fixedly connected to the inner side of the retaining ring 2, and the limiting strip on the left and right sides that are close to each other is fixedly connected to the inner side of the retaining ring 1.

[0012] Preferably, the slider is L-shaped, the side of the slider away from the extrusion block is spherical, and the extrusion block is slidably connected inside the extrusion groove.

[0013] Preferably, the extrusion groove is connected to the correction groove, and the mounting bracket is slidably connected inside the correction groove.

[0014] Preferably, the card block engages with the inside of the card slot, the inner side of the first retaining ring is in contact with the outer periphery of the connecting shaft, and the inner side of the second retaining ring is in contact with the outer periphery of the connecting shaft.

[0015] A CNC machine tool includes a workpiece unloading assembly.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The present invention proposes a workpiece unloading assembly and CNC machine tool. By designing the bottom plate of the guide plate in a two-layer manner, the upper layer can rotate and multiple unloading grooves are opened in the lower layer. When the upper and lower layers are in contact, the upper layer can drive the cleaning brush to sweep the debris on the top of the lower layer into the unloading groove. At this time, the workpiece falls on the upper layer, which not only cushions the workpiece but also prevents the debris from damaging the workpiece. The guide plate can achieve a multi-purpose effect, making it highly economical to use. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention;

[0019] Figure 2 This is a schematic diagram of the guide plate structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the pad structure of the present invention;

[0021] Figure 4 For the present invention Figure 3 Cross-sectional view of the structure at point AA;

[0022] Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle;

[0023] Figure 6 For the present invention Figure 3 Cross-sectional view of the structure at point BB;

[0024] Figure 7 For the present invention Figure 6 Enlarged view at point B in the middle;

[0025] Figure 8 For the present invention Figure 6 Enlarged view at point C;

[0026] Figure 9 This is a cross-sectional view of the structure at CC in part 3 of the present invention;

[0027] Figure 10 For the present invention Figure 9 Enlarged view at point D;

[0028] Figure 11 This is a schematic diagram of the extrusion block structure of the present invention;

[0029] Figure 12 This is a schematic diagram of the flip-up structure of the movable plate of the present invention;

[0030] Figure 13 This is a schematic diagram of the material feeding trough structure of the present invention;

[0031] Figure 14 For the present invention Figure 13 Cross-sectional view of the DD structure;

[0032] Figure 15 For the present invention Figure 14 Enlarged view of point E in the middle.

[0033] In the diagram: 1. Machine body; 2. Guide plate; 3. Connecting block; 4. Movable plate; 5. Slide groove; 6. Slider; 7. Extrusion block; 8. Mounting frame; 9. Placement groove; 10. Cleaning brush; 11. Rubber block; 12. Spring; 13. Extrusion groove; 14. Discharge groove; 15. Slot; 16. Insert block; 17. Collection box; 18. Mounting groove; 19. Mounting plate; 20. Pad plate; 21. Connecting column; 22. Snap ring one; 23. Snap groove; 24. Snap ring two; 25. Snap block; 26. Limiting strip; 27. Connecting shaft; 28. Limiting groove; 29. ​​Correction groove. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit 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.

[0035] Example 1

[0036] Please see Figures 1 to 15 This invention provides a technical solution: a workpiece unloading assembly, including a body 1, a guide plate 2 fixedly connected inside the body 1, four connecting blocks 3 fixedly connected to the lower inside of the guide plate 2, and movable plates 4 rotatably connected inside the connecting blocks 3 on both the front and rear sides. The movable plates 4 are the upper layer of the bottom plate of the guide plate 2. The connecting blocks 3 on the left and right sides are symmetrically designed, so that the movable plates 4 are evenly stressed. A pad 20 is installed at the top of the movable plates 4. The pad 20 is used to buffer the workpieces falling on the movable plates 4, thereby greatly reducing the possibility of workpiece damage. A cleaning brush 10 is slidably connected to the lower inner wall of the guide plate 2. Multiple unloading grooves 14 are opened on the lower inside of the guide plate 2. The unloading grooves 14 are opened on the lower layer of the bottom plate of the guide plate 2. The cleaning brush 10 is used to clean the lower inner wall of the guide plate 2, so that the debris can be discharged from the interior of the guide plate 2 through the unloading grooves 14.

[0037] Before processing the workpiece, the movable plate 4 is flipped so that it no longer obstructs the lower inner wall of the guide plate 2, thereby exposing the upper side of the discharge trough 14. At this time, the cleaning brush 10 can slide on both sides of the inner wall of the guide plate 2, thus pushing the debris into the discharge trough 14 on both sides. When it is necessary to discharge the workpiece, the movable plate 4 is reset, causing the cleaning brush 10 to slide inward, thus pushing the debris into the discharge trough 14 in the middle position. This prevents debris from adhering to the inner wall of the guide plate 2, and after the movable plate 4 is reset... The workpiece will fall onto the pad 20, which cushions the workpiece. The workpiece then falls into the storage box along the tilt angle of the guide plate 2. During the flipping and resetting process, the movable plate 4 drives the cleaning brush 10 to clean up the debris. After resetting, the movable plate 4 cushions the workpiece, preventing damage and avoiding obstruction of workpiece feeding by debris. It also prevents debris from scratching the workpiece, ensuring the processing quality of the workpiece. The movable plate 4 achieves a multi-purpose effect and is highly economical to use.

[0038] Example 2

[0039] Based on Embodiment 1, in order to enable the movable plate 4 to pull the cleaning brush 10 during the flipping or resetting process, sliding grooves 5 are provided on both the front and rear sides of the movable plate 4. A slider 6 is slidably connected inside the sliding groove 5, and the sliding groove 5 limits the slider 6, allowing the slider 6 to slide smoothly. The slider 6 is a telescopic rod, so that the movable plate 4 is not restricted when flipping. The slider 6 has an "L" shape design, which allows the slider 6 to easily drive the cleaning brush 10 to move. The side of the slider 6 away from the squeezing block 7 has a spherical design, so that the slider 6 is not obstructed when sliding inside the sliding groove 5. The bottom end of the slider 6 is fixedly connected to the squeezing block 7, and the front and rear sides of the squeezing block 7 are fixedly connected to the adjacent side of the squeezing block 7. The squeezing block 7 is used to pull... The mounting bracket 8 moves, and a correction groove 29 is provided on the lower inner wall of the guide plate 2. Extrusion grooves 13 are provided on both the front and rear sides of the guide plate 2. The extrusion grooves 13 are connected to the correction grooves 29, so that the extrusion block 7 will not be obstructed when moving the mounting bracket 8. The mounting bracket 8 is slidably connected inside the correction groove 29. The correction groove 29 limits the mounting bracket 8 inside, so that the mounting bracket 8 will not deviate when moving. The extrusion block 7 is slidably connected inside the extrusion groove 13. The extrusion groove 13 limits the extrusion block 7, so that the extrusion block 7 can slide smoothly. A spring 12 is fixedly connected to the inner wall of the extrusion groove 13. The other end of the spring 12 is fixedly connected to the extrusion block 7, so that the extrusion block 7 can compress the spring 12 to produce deformation.

[0040] When the movable plate 4 flips, the slider 6 is subjected to the offset force of the movable plate 4, allowing it to slide inside the groove 5. This causes the slider 6 to drive the extrusion block 7 to slide outward, which in turn causes the extrusion block 7 to drive the mounting bracket 8 to slide outward. The extrusion block 7 then compresses the spring 12, causing it to deform. When the movable plate 4 reaches its upper stop point, the slider 6 moves from the inside to the outside of the groove 5, allowing the mounting bracket 8 to drive the cleaning brush 10 to move into the outer feed chute 14, thus initially cleaning the debris. When the movable plate 4 returns to its original position, the spring 12... The spring 12 pushes the extrusion block 7 to slide inward, which in turn causes the extrusion block 7 to slide inward via the mounting bracket 8, thereby pushing the debris on the inner wall of the guide plate 2 into the middle of the discharge trough 14. This allows for secondary cleaning of the debris on the inner wall of the guide plate 2, improving the cleaning effect. When the extrusion block 7 moves inward, the movable plate 4 no longer pulls the slider 6, allowing the extrusion block 7 to drive the slider 6 to slide inward, ensuring that the mounting bracket 8 can slide inward without obstruction.

[0041] Example 3

[0042] Based on Embodiment 2, in order to further improve cleaning efficiency, a placement groove 9 is provided inside the mounting frame 8. The inside of the placement groove 9 is slidably connected to the outside of the cleaning brush 10. The placement groove 9 limits the cleaning brush 10 inside, so that the cleaning brush 10 will not deviate when moving. Multiple rubber blocks 11 are fixedly connected to the lower side of the inner wall of the cleaning brush 10. The other end of the rubber blocks 11 is fixedly connected to the upper side of the inner wall of the placement groove 9. The multiple rubber blocks 11 are evenly distributed, so that the cleaning brush 10 is subjected to more even force, thereby enabling the cleaning brush 10 to stably clean the inner wall of the guide plate 2.

[0043] When the mounting bracket 8 is installed on the guide plate 2, the guide plate 2 pushes the cleaning brush 10 to slide upward, which in turn causes the cleaning brush 10 to squeeze the rubber block 11 to deform, allowing the rubber block 11 to return to its original position. This allows the rubber block 11 to push the cleaning brush 10 to fit tightly against the lower inner wall of the guide plate 2, thereby improving the cleaning effect of the cleaning brush 10 on the debris on the lower inner wall of the guide plate 2.

[0044] Example 4

[0045] Based on Embodiment 3, in order to collect the debris from the cleaning process, slots 15 are provided inside the four corners of the bottom of the guide plate 2. Inserts 16 are engaged inside the slots 15, and multiple sealing rings are fixedly connected to the outside of the inserts 16. The sealing rings fit against the slots 15, thereby increasing the friction between the inserts 16 and the slots 15 and preventing them from easily detaching from the inside of the slots 15. A collection box 17 is fixedly connected to the bottom of the inserts 16, and the top of the collection box 17 fits against the bottom of the guide plate 2, preventing debris from leaking out of its gaps. The collection box 17 is connected to the discharge trough 14, allowing debris on the inner wall of the guide plate 2 to fall into the collection box 17 through the discharge trough 14.

[0046] When the collection box 17 needs to be installed, the bottom end of the collection box 17 is attached to the guide plate 2, so that the insert 16 can enter the interior of the slot 15. During this process, the sealing ring can slide inside the slot 15, so that the sealing ring is squeezed and deformed. When it makes a reset movement, the sealing ring can fit tightly with the interior of the slot 15, so that the friction between the insert 16 and the slot 15 is greater, and the engagement between the insert 16 and the slot 15 is more stable. This allows the collection box 17 to be installed conveniently and stably, and the debris can fall directly into the interior of the collection box 17 through the discharge chute 14, so that the debris can be collected conveniently and the working environment is cleaner.

[0047] Example 5

[0048] Based on Embodiment 4, in order to facilitate the installation of the pad 20, an installation groove 18 is provided on the upper side of the movable plate 4. An installation plate 19 is slidably connected inside the installation groove 18. The installation groove 18 limits the installation plate 19, allowing the installation plate 19 to slide stably into the interior of the installation groove 18. Multiple protrusions are provided on the outside of the installation plate 19. The protrusions fit against the interior of the installation groove 18, increasing the friction between the installation plate 19 and the installation groove 18, thereby making the installation of the installation plate 19 more stable. The top end of the installation plate 19 is fixedly connected to the bottom end of the pad 20, so that the pad 20 can be stably installed on the movable plate 4.

[0049] When the pad 20 needs to be installed, the mounting plate 19 is slid into the mounting groove 18, which allows the protrusion to slide into the mounting groove 18 and be deformed by the mounting groove 18. This increases the friction between the mounting plate 19 and the mounting groove 18, making the mounting plate 19 more stable. This allows the pad 20 to be stably installed on the movable plate 4. Furthermore, the use of the mounting plate 19 in conjunction with the pad 20 provides greater cushioning force for the workpiece, making the workpiece less susceptible to damage and improving the economic efficiency of use.

[0050] Example 6

[0051] Based on Embodiment 5, in order to limit the movement of the flipped movable plate 4, four connecting posts 21 are fixedly connected to the upper side of the inner wall of the guide plate 2. The connecting posts 21 on the left and right sides are symmetrically distributed. A retaining ring 22 is fixedly connected to the top of the connecting post 21. A retaining groove 23 is opened inside the retaining ring 22. A retaining ring 24 is hinged to the upper side of the retaining ring 22, so that the retaining ring 24 can be opened and closed from the retaining ring 22. A retaining block 25 is fixedly connected to the lower side of the retaining ring 24. The retaining block 25 engages with the inside of the retaining groove 23, so that the retaining ring 24 and the retaining block 25 are stably connected to maintain the connecting shaft. To ensure stability, the connecting shaft 27 is rotatably connected to both the front and rear sides of the movable plate 4. The inner side of the second retaining ring 24 is in contact with the outer periphery of the connecting shaft 27, and the inner side of the first retaining ring 22 is in contact with the outer periphery of the connecting shaft 27, thus making the connecting shaft 27 more stable. Multiple limiting grooves 28 are provided on the outer periphery of the connecting shaft 27. Limiting strips 26 are inserted into the inside of the limiting grooves 28 to prevent the connecting shaft 27 from sliding inside the second retaining ring 24 and the first retaining ring 22. The left and right opposite limiting strips 26 are fixedly connected to the inner side of the second retaining ring 24, and the left and right adjacent limiting strips 26 are fixedly connected to the inner side of the first retaining ring 22.

[0052] When the movable plate 4 needs to be flipped, the locking ring 24 is rotated to disengage the locking block 25 from the inside of the locking groove 23, thereby reserving installation space for the connecting shaft 27. The connecting shaft 27 is then moved into the inside of the locking ring 22, and the locking ring 24 is closed, so that the locking block 25 can engage with the inside of the locking groove 23. At this time, the limiting strip 26 can enter the corresponding limiting groove 28, thereby making the placement of the connecting shaft 27 more stable, thus limiting the movable plate 4, and thus not affecting the guide plate 2's collection of debris.

[0053] Example 7

[0054] A CNC machine tool includes a workpiece unloading assembly.

[0055] In actual use, by rotating the retaining ring 24, the retaining block 25 is disengaged from the inside of the retaining groove 23, thus reserving installation space for the connecting shaft 27. Then, by flipping the movable plate 4, it no longer obstructs the lower inner wall of the guide plate 2, exposing the upper side of the feeding groove 14. At this time, the slider 6, subjected to the offset force of the movable plate 4, slides inside the groove 5, causing the slider 6 to drive the extrusion block 7 to slide outwards. This causes the extrusion block 7 to drive the mounting bracket 8 to slide outwards, deforming the extrusion block 7's compression spring 12. When the movable plate 4 reaches its upper stop point, the slider 6 moves from the inside to the outside of the groove 5, allowing the mounting bracket... 8 drives the cleaning brush 10 to move into the outer feed trough 14, allowing the debris to be initially cleaned and fall into the collection boxes 17 on both sides for collection. This moves the connecting shaft 27 into the retaining ring 22 and closes the retaining ring 24, allowing the retaining block 25 to engage with the inside of the retaining groove 23. At this time, the limiting strip 26 enters the corresponding limiting groove 28, making the placement of the connecting shaft 27 more stable and limiting the movable plate 4. This prevents the guide plate 2 from affecting the collection of debris. When it is necessary to unload the workpiece, the movable plate 4 is reset, and the spring 12 is reset. The movement of the spring 12 causes the extrusion block 7 to slide inward, which in turn causes the cleaning brush 10 to slide inward via the mounting bracket 8. This pushes the debris on the inner wall of the guide plate 2 into the middle feeding trough 14, where it is collected by the collection box 17. This provides secondary cleaning of the debris on the inner wall of the guide plate 2, improving the cleaning effect. Furthermore, as the extrusion block 7 moves inward, the movable plate 4 no longer pulls the slider 6, allowing the extrusion block 7 to drive the slider 6 inward. This ensures that the mounting bracket 8 slides inward without obstruction. This prevents debris from adhering to the inner wall of the guide plate 2, and after the movable plate 4 is reset, the workpiece will fall onto the pad 20. The pad 20 is used to cushion the workpiece, allowing it to fall into the storage box along the tilt angle of the guide plate 2. This allows the movable plate 4 to drive the cleaning brush 10 to clean the debris during the flipping and resetting process. After resetting, the movable plate 4 cushions the workpiece, preventing damage and avoiding obstruction of workpiece feeding by debris. It also prevents debris from scratching the workpiece, ensuring the processing quality of the workpiece. This makes the movable plate 4 a multi-purpose device with high economic efficiency.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A workpiece unloading assembly, comprising a body (1), wherein a guide plate (2) is fixedly connected inside the body (1), characterized in that: Four connecting blocks (3) are fixedly connected to the lower inner side of the guide plate (2). Movable plates (4) are rotatably connected to the inner sides of the connecting blocks (3) on both the front and rear sides. A pad (20) is installed on the top of the movable plate (4). A cleaning brush (10) is slidably connected to the lower inner wall of the guide plate (2). Multiple feeding grooves (14) are opened on the lower inner side of the guide plate (2). The movable plate (4) has sliding grooves (5) on both the front and rear sides. A slider (6) is slidably connected inside the sliding groove (5). The slider (6) is a telescopic rod. An extrusion block (7) is fixedly connected to the bottom end of the slider (6). An installation bracket (8) is fixedly connected to the adjacent side of the extrusion block (7) on both the front and rear sides. A correction groove (29) is opened on the lower side of the inner wall of the guide plate (2). An extrusion groove (13) is opened on both the front and rear sides inside the guide plate (2). A spring (12) is fixedly connected to the inner wall of the extrusion groove (13). 2) The other end is fixedly connected to the extrusion block (7); the mounting bracket (8) has a placement groove (9) inside, the inside of the placement groove (9) is slidably connected to the outside of the cleaning brush (10), a plurality of rubber blocks (11) are fixedly connected to the lower side of the inner wall of the cleaning brush (10), and the other end of the rubber block (11) is fixedly connected to the upper side of the inner wall of the placement groove (9); the slider (6) is designed in an "L" shape, the side of the slider (6) away from the extrusion block (7) is spherical, and the extrusion block (7) is slidably connected to the inside of the extrusion groove (13).

2. The workpiece unloading assembly according to claim 1, characterized in that: The guide plate (2) has slots (15) at the four corners of its bottom end. A plug (16) is inserted into the slot (15). Multiple sealing rings are fixedly connected to the outside of the plug (16). The sealing rings fit into the slot (15). A collection box (17) is fixedly connected to the bottom end of the plug (16). The top of the collection box (17) fits into the bottom end of the guide plate (2). The collection box (17) is connected to the discharge trough (14).

3. The workpiece unloading assembly according to claim 2, characterized in that: The upper side of the movable plate (4) is provided with an installation groove (18), and an installation plate (19) is slidably connected inside the installation groove (18). Multiple protrusions are provided on the outside of the installation plate (19), and the protrusions fit into the inside of the installation groove (18). The top of the installation plate (19) is fixedly connected to the bottom of the pad (20).

4. The workpiece unloading assembly according to claim 3, characterized in that: Four connecting posts (21) are fixedly connected to the upper side of the inner wall of the guide plate (2). A retaining ring (22) is fixedly connected to the top of the connecting post (21). A retaining groove (23) is opened inside the retaining ring (22). A retaining ring (24) is hinged to the upper side of the retaining ring (22). A retaining block (25) is fixedly connected to the lower side of the retaining ring (24). A connecting shaft (27) is rotatably connected to both the front and rear sides of the movable plate (4). Multiple limiting grooves (28) are opened on the outer periphery of the connecting shaft (27). A limiting strip (26) is inserted into the inside of the limiting groove (28). The limiting strip (26) on the left and right sides that are far apart is fixedly connected to the inner side of the retaining ring (24). The limiting strip (26) on the left and right sides that are close to each other is fixedly connected to the inner side of the retaining ring (22).

5. The workpiece unloading assembly according to claim 1, characterized in that: The extrusion groove (13) is connected to the correction groove (29), and the mounting bracket (8) is slidably connected inside the correction groove (29).

6. The workpiece unloading assembly according to claim 4, characterized in that: The card block (25) engages with the inside of the card slot (23), the inner side of the first card ring (22) is in contact with the outer periphery of the connecting shaft (27), and the inner side of the second card ring (24) is in contact with the outer periphery of the connecting shaft (27).

7. A CNC machine tool, characterized in that: Includes the workpiece unloading assembly as described in any one of claims 1-6.

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