A flexible automatic material loading and unloading device for CNC machine tools

Abstract

This invention discloses an automatic loading and unloading device for flexible materials in CNC machine tools, relating to the field of material loading and unloading technology. It includes a movable base, a feeding robotic arm, and a clamping assembly. When the workpiece being loaded / unloaded is a heavy metal part, the pad mounting frame rotates, causing the clamping pad to move to one side of the clamping mounting box. The clamping mounting plates move towards each other, causing the clamping pad to contact the material and clamp it. When loading / unloading lighter or flexible materials, the pad mounting frame is located on the side of the clamping mounting plate away from the clamping mounting box. The elastic airbag inside the clamping mounting box inflates, and the inflated elastic airbag pops out from the airbag outlet. The clamping mounting plates move towards each other, causing the popped-out elastic airbag to contact the material and clamp it. Different clamping methods are used for different materials, eliminating the need for manual replacement of clamping parts, reducing manpower consumption, and improving work efficiency.

Description

Technical Field

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

[0002] Machine tool loading and unloading devices are automatic or semi-automatic mechanical devices that feed the material to be processed onto the processing position of the machine tool and remove the material from the processing position. Most existing machine tool loading and unloading devices are automatic loading and unloading devices. Automatic loading and unloading devices use various automatic loading and unloading devices to mechanize the loading and unloading process, further shorten auxiliary time, and eliminate heavy manual labor.

[0003] Existing loading and unloading devices typically use rigid clamping parts. When clamping materials of some flexible materials, the original rigid clamping parts need to be removed and replaced with specially made clamping parts. When clamping materials of different materials in the same batch, manual replacement of clamping parts is required, resulting in low work efficiency. A clamping pad is usually fixedly installed on the side of the clamping part that contacts the material. The clamping pad needs to be fixed with screws. When the clamping pad needs to be replaced, the screws must be removed first before replacement and installation, which is a cumbersome process and slow replacement speed. Summary of the Invention

[0004] The purpose of this invention is to adopt different clamping methods for materials of different materials without the need for manual replacement of clamping parts. This reduces the steps of replacing clamping parts when clamping materials of different materials, thus solving the problem in the prior art that when clamping some flexible materials, it is necessary to remove the original rigid clamping parts and replace them with specially made clamping parts, and when clamping materials of different materials in the same batch, it is necessary to manually replace the clamping parts, resulting in low work efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a flexible material automatic loading and unloading device for CNC machine tools, comprising a movable base, a feeding robotic arm, and a clamping assembly, wherein the feeding robotic arm is disposed on the movable base;

[0006] The clamping assembly includes a mounting base plate and clamping units. The mounting base plate is rotatably connected to the feeding robot arm. Two clamping units are provided on the side of the mounting base plate. Each clamping unit includes a clamping mounting plate, a clamping mounting box, an elastic airbag, and a gasket mounting bracket. The clamping mounting plate is slidably mounted on the side of the mounting base plate. The clamping mounting box is fixedly mounted on the side of the clamping mounting plate. The side of the clamping mounting box away from the clamping mounting plate has several airbag outlets. The elastic airbag is disposed in the clamping mounting box. The gasket mounting bracket is rotatably mounted on the side of the clamping mounting box.

[0007] When the elastic airbag is inflated, part of the elastic airbag can pop out from the airbag outlet. When the clamping mounting plates move towards each other, the popped elastic airbag contacts the material and clamps the material. The gasket mounting bracket can fix the clamping gasket. When the gasket mounting bracket rotates, it can drive the clamping gasket to move, so that when the clamping mounting plates move towards each other to clamp, the clamping gasket can contact the material and clamp it.

[0008] Furthermore, the clamping unit also includes a mounting rotating shaft, a rotating gear, a movable rack, a rack connecting rod, a movable push plate, and a drive electric push rod. Two rotating mounting blocks are fixedly mounted on the side of the clamping mounting box. A mounting rotating shaft is fixedly mounted at the bottom of the gasket mounting bracket. The mounting rotating shaft is rotatably connected to the rotating mounting blocks. The rotating gear is fixedly sleeved on the mounting rotating shaft. A movable sliding groove is provided on the side of the clamping mounting plate. The rack connecting rod is slidably mounted in the movable sliding groove. The movable rack is fixedly connected to the rack connecting rod and meshes with the rotating gear. The drive electric push rod is fixedly mounted on the side of the clamping mounting plate away from the clamping mounting box. The movable push plate is fixedly connected to the output end of the drive electric push rod. A movable connection port is provided on the side of the clamping mounting plate away from the clamping mounting box. The movable push plate passes through the movable connection port and is fixedly connected to the rack connecting rod.

[0009] Furthermore, the clamping unit also includes a rotating pressure rod, a limiting rotating shaft, a limiting rotating plate, a spring, a fixed limiting rod, and a limiting stop. Two rotating pressure rods are provided on one side of the gasket mounting bracket. One end of the rotating pressure rod is rotatably mounted on the gasket mounting bracket. The limiting rotating shaft is rotatably mounted on one side of the rotating pressure rod. The spring is fixedly sleeved on the limiting rotating shaft and is fixedly connected to the rotating pressure rod. The limiting rotating plate is fixedly connected to the limiting rotating shaft. The fixed limiting rod is fixedly mounted on one side of the limiting rotating plate. The limiting stop is fixedly mounted on the top of the gasket mounting bracket.

[0010] Furthermore, the clamping unit also includes an air pump and an air supply pipe. The air pump is fixedly installed on the side of the mounting base plate, and one end of the air supply pipe is fixedly connected to the air pump, while the other end passes through the clamping mounting box and is fixedly connected to the elastic airbag.

[0011] Furthermore, the clamping assembly also includes a clamping lead screw and a drive motor. A lead screw mounting groove is provided on the side of the mounting base plate. The clamping lead screw is rotatably mounted in the lead screw mounting groove. A movable slider is threaded onto the clamping lead screw. The movable slider is slidably engaged with the lead screw mounting groove. The movable slider is fixedly connected to the clamping mounting plate. The drive motor is fixedly mounted on the top of the mounting base plate. The drive shaft of the drive motor passes through the mounting base plate and is fixedly connected to the clamping lead screw.

[0012] Furthermore, a gasket protrusion is fixedly installed on the side of the gasket mounting bracket, and the width of the gasket protrusion is greater than the width of the rotating pressure rod.

[0013] Furthermore, the clamping screw is a bidirectional threaded screw.

[0014] Furthermore, the feeding robotic arm is slidably connected to the movable base, and the feeding robotic arm can move along the top surface of the movable base.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] Before loading and unloading, the clamping shims are installed on the shim mounting frame. When the blanks being loaded or unloaded are heavy metal parts, the shim mounting frame rotates, moving the clamping shims to one side of the clamping mounting box. The clamping mounting plates move towards the material, and the clamping shims contact and clamp the material. When loading or unloading lighter or flexible materials, the shim mounting frame rotates, moving the clamping shims to the side of the clamping mounting plate away from the clamping mounting box. The elastic airbags inside the clamping mounting box inflate, and the inflated elastic airbags pop out from the airbag outlets. The clamping mounting plates move towards the material, moving the clamping mounting box. The popped-out elastic airbags contact and clamp the material. Different clamping methods are used for different materials, eliminating the need for manual replacement of clamping parts. This reduces the steps of changing clamping parts when clamping different materials, reduces manpower consumption, and improves work efficiency.

[0017] Before clamping the material, the clamping pad is placed between the rotating pressure rod and the pad protrusion. The rotating pressure rod rotates, causing the limiting rotating shaft to move. The rotating pressure rod then moves the limiting rotating plate, which in turn moves the fixed limiting rod. The fixed limiting rod moves and presses against the limiting stop, causing it to rotate. When the side of the rotating pressure rod is parallel to the side of the pad mounting bracket, the spring returns to its original position, and the limiting stop limits the movement of the fixed limiting rod, thus fixing the clamped pad. When the clamping pad needs to be replaced, the limiting rotating plate is manually rotated. The rotation of the limiting rotating plate causes the fixed limiting rod to rotate, releasing the limiting stop from limiting the fixed limiting rod. The rotating pressure rod then moves, allowing the old clamping pad to be removed and replaced with a new one. No screws are needed to fix the pad, facilitating pad replacement and improving the applicability of the device. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is one of the overall structural schematic diagrams provided in the embodiments of the present invention;

[0020] Figure 2 This is one of the partial structural schematic diagrams provided in the embodiments of the present invention;

[0021] Figure 3 This is a second partial structural schematic diagram provided in an embodiment of the present invention;

[0022] Figure 4 This is the third partial structural schematic diagram provided for an embodiment of the present invention;

[0023] Figure 5 This is the fourth partial structural schematic diagram provided for an embodiment of the present invention;

[0024] Figure 6 This is an embodiment of the present invention. Figure 5 Enlarged schematic diagram of the structure at point A;

[0025] Figure 7 Fifth partial structural schematic diagram provided for an embodiment of the present invention;

[0026] Figure 8 This is an embodiment of the present invention. Figure 7 Enlarged schematic diagram of the structure at point B.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Movable base; 2. Feeding robotic arm; 3. Clamping assembly; 301. Mounting base plate; 302. Clamping lead screw; 303. Drive motor; 31. Clamping unit; 3101. Clamping mounting plate; 3102. Clamping mounting box; 3103. Elastic airbag; 3104. Gasket mounting bracket; 3105. Mounting rotating shaft; 3106. Rotating gear; 3107. Movable rack; 3108. Rack connecting rod; 3109. Movable push plate; 3110. Drive electric push rod; 3111. Rotating pressure rod; 3112. Limiting rotating shaft; 3113. Limiting rotating plate; 3114. Spring; 3115. Fixed limiting rod; 3116. Limiting stop; 3117. Air pump; 3118. Air supply pipe; 3119. Gasket protrusion. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] As attached Figure 1 To be continued Figure 8 As shown:

[0031] Example 1:

[0032] The present invention provides a flexible material automatic loading and unloading device for CNC machine tools, including a movable base 1, a feeding robotic arm 2 and a clamping assembly 3, wherein the feeding robotic arm 2 is disposed on the movable base 1;

[0033] The clamping assembly 3 includes a mounting base plate 301 and a clamping unit 31. The mounting base plate 301 is rotatably connected to the feeding robot arm 2. Two clamping units 31 are provided on the side of the mounting base plate 301. The clamping unit 31 includes a clamping mounting plate 3101, a clamping mounting box 3102, an elastic airbag 3103, and a gasket mounting bracket 3104. The clamping mounting plate 3101 is slidably mounted on the side of the mounting base plate 301. The clamping mounting box 3102 is fixedly mounted on the side of the clamping mounting plate 3101. Several airbag outlets are opened on the side of the clamping mounting box 3102 away from the clamping mounting plate 3101. The elastic airbag 3103 is disposed in the clamping mounting box 3102. The gasket mounting bracket 3104 is rotatably mounted on the side of the clamping mounting box 3102.

[0034] When the elastic airbag 3103 is inflated, part of the elastic airbag 3103 can pop out from the airbag outlet. When the clamping mounting plates 3101 move towards each other, the popped elastic airbag 3103 contacts the material and clamps the material. The gasket mounting bracket 3104 can fix the clamping gasket. When the gasket mounting bracket 3104 rotates, it can drive the clamping gasket to move. When the clamping mounting plates 3101 move towards each other to clamp, the clamping gasket can contact the material and clamp it.

[0035] Before loading and unloading, the clamping shims are installed on the shim mounting bracket 3104. When the workpiece being loaded or unloaded is a heavy metal part, the shim mounting bracket 3104 rotates, causing the clamping shims to move to one side of the clamping mounting box 3102. The clamping mounting plates 3101 move towards the material, and the clamping shims contact and clamp the material. When loading or unloading lighter or flexible materials, the shim mounting bracket 3104 rotates, causing the clamping shims to move away from the clamping mounting plate 3101 and away from the clamping mounting box 3102. On one side, the elastic airbag 3103 inside the clamping mounting box 3102 is inflated. The inflated elastic airbag 3103 pops out from the airbag ejection port. The clamping mounting plate 3101 moves towards each other, causing the clamping mounting box 3102 to move. The popped-out elastic airbag 3103 comes into contact with the material and clamps the material. Different clamping methods are used for materials of different materials. There is no need to manually replace the clamping parts. When clamping materials of different materials, the steps of replacing clamping parts are reduced, the consumption of human resources is reduced, and the work efficiency is improved.

[0036] Example 2:

[0037] This embodiment is basically the same as the previous embodiment, except that the clamping unit 31 further includes a mounting rotating shaft 3105, a rotating gear 3106, a movable rack 3107, a rack connecting rod 3108, a movable push plate 3109, and a drive electric push rod 3110. Two rotating mounting blocks are fixedly mounted on the side of the clamping mounting box 3102. The bottom end of the gasket mounting bracket 3104 is fixedly mounted with the mounting rotating shaft 3105. The mounting rotating shaft 3105 is rotatably connected to the rotating mounting blocks. The rotating gear 3106 is fixedly sleeved on the mounting rotating shaft 3105. The side of the clamping mounting plate 3101 is opened. The device has a movable slide groove, in which the rack connecting rod 3108 is slidably installed. The movable rack 3107 is fixedly connected to the rack connecting rod 3108 and meshes with the rotating gear 3106. The drive electric push rod 3110 is fixedly installed on the side of the clamping mounting plate 3101 away from the clamping mounting box 3102. The movable push plate 3109 is fixedly connected to the output end of the drive electric push rod 3110. A movable connection port is provided on the side of the clamping mounting plate 3101 away from the clamping mounting box 3102. The movable push plate 3109 passes through the movable connection port and is fixedly connected to the rack connecting rod 3108.

[0038] The clamping unit 31 also includes a rotating pressure rod 3111, a limiting rotating shaft 3112, a limiting rotating plate 3113, a spring 3114, a fixed limiting rod 3115, and a limiting block 3116. Two rotating pressure rods 3111 are provided on one side of the gasket mounting bracket 3104. One end of the rotating pressure rod 3111 is rotatably mounted on the gasket mounting bracket 3104. The limiting rotating shaft 3112 is rotatably mounted on one side of the rotating pressure rod 3111. The spring 3114 is fixedly sleeved on the limiting rotating shaft 3112. The spring 3114 is fixedly connected to the rotating pressure rod 3111. The limiting rotating plate 3113 is fixedly connected to the limiting rotating shaft 3112. The fixed limiting rod 3115 is fixedly mounted on one side of the limiting rotating plate 3113. The limiting block 3116 is fixedly mounted on the top of the gasket mounting bracket 3104.

[0039] The clamping unit 31 also includes an air pump 3117 and an air supply pipe 3118. The air pump 3117 is fixedly installed on the side of the mounting base plate 301. One end of the air supply pipe 3118 is fixedly connected to the air pump 3117, and the other end passes through the clamping mounting box 3102 and is fixedly connected to the elastic airbag 3103.

[0040] A gasket protrusion 3119 is fixedly installed on the side of the gasket mounting bracket 3104. The width of the gasket protrusion 3119 is greater than the width of the rotating pressure rod 3111.

[0041] Before clamping the material, the clamping pad is placed between the rotating pressure rod 3111 and the pad protrusion 3119. The rotating pressure rod 3111 rotates, causing the limiting rotating shaft 3112 to move. The rotating pressure rod 3111 drives the limiting rotating plate 3113 to move, and the limiting rotating plate 3113 drives the fixed limiting rod 3115 to move. The fixed limiting rod 3115 moves and presses against the limiting stop 3116, causing it to rotate. When the side of the rotating pressure rod 3111 is parallel to the side of the pad mounting bracket 3104, the spring spring 3114 returns to its original position, and the limit is reached. The stop block 3116 limits the movement of the fixed limit rod 3115, thus fixing the clamping gasket. When the clamping gasket needs to be replaced, the limit rotating plate 3113 is manually rotated. The rotation of the limit rotating plate 3113 drives the fixed limit rod 3115 to rotate, and the stop block 3116 releases the limitation on the fixed limit rod 3115. The pressure rod 3111 is then rotated to move, allowing the old clamping gasket to be removed and replaced with a new one. No screws are needed to fix the gasket, making it convenient to replace the clamping gasket and improving the applicability of the device.

[0042] When the blanks being loaded and unloaded are relatively heavy metal parts, the drive electric actuator 3110 drives the moving push plate 3109 to move. The moving push plate 3109 drives the rack connecting rod 3108 to move. The rack connecting rod 3108 drives the moving rack 3107 to move. During the movement of the moving rack 3107, the rotating gear 3106 is driven to rotate. The rotating gear 3106 drives the mounting rotating shaft 3105 to rotate. The rotating shaft 3105 drives the gasket mounting bracket 3104 to rotate. When loading and unloading lighter and flexible materials, the air pump 3117 inflates the elastic airbag 3103 through the air supply pipe 3118. The elastic airbag 3103 inflates and expands. The inflated part of the elastic airbag 3103 pops out from the airbag outlet.

[0043] Example 3:

[0044] This embodiment is basically the same as the previous embodiment, except that the clamping assembly 3 also includes a clamping screw 302 and a drive motor 303. The mounting base plate 301 has a screw mounting groove on its side. The clamping screw 302 is rotatably mounted in the screw mounting groove. A movable slider is threaded on the clamping screw 302. The movable slider is slidably engaged with the screw mounting groove. The movable slider is fixedly connected to the clamping mounting plate 3101. The drive motor 303 is fixedly mounted on the top of the mounting base plate 301. The drive shaft of the drive motor 303 passes through the mounting base plate 301 and is fixedly connected to the clamping screw 302. The clamping screw 302 is a bidirectional threaded screw.

[0045] The feeding robotic arm 2 is slidably connected to the movable base 1, and the feeding robotic arm 2 can move along the top surface of the movable base 1;

[0046] When the feeding robotic arm 2 moves the clamping mounting plate 3101, so that the material is located between the clamping mounting plates 3101, the drive motor 303 drives the clamping screw 302 to rotate. The rotation of the clamping screw 302 drives the moving slider to move, thereby causing the clamping mounting plates 3101 to move towards each other to clamp the material. After clamping, the feeding robotic arm 2 moves along the top surface of the moving base 1 to transport the material to the designated position. The drive motor 303 drives the clamping screw 302 to rotate, and the rotation of the clamping screw 302 drives the moving slider to move, thereby causing the clamping mounting plates 3101 to move away from each other to release the clamping of the material and transport the material to the designated position.

[0047] Working principle:

[0048] Before loading and unloading, the clamping shim is placed between the rotating pressure rod 3111 and the shim protrusion 3119. The rotating pressure rod 3111 rotates, causing the limiting rotating shaft 3112 to move. The rotating pressure rod 3111 drives the limiting rotating plate 3113 to move. The limiting rotating plate 3113 drives the fixed limiting rod 3115 to move. The fixed limiting rod 3115 moves and presses against the limiting stop 3116, causing it to rotate. When the side of the rotating pressure rod 3111 is against the side of the shim mounting bracket 3104... After parallelization, the spring 3114 returns to its original position, and the limit block 3116 limits the movement of the fixed limit rod 3115, thus fixing the clamped pad. When the clamping pad needs to be replaced, the limit rotating plate 3113 is manually rotated. The rotation of the limit rotating plate 3113 drives the fixed limit rod 3115 to rotate, and the limit block 3116 releases the limit on the fixed limit rod 3115. The pressure rod 3111 is rotated to move, and the old clamping pad is removed and replaced with a new clamping pad.

[0049] When the blank being loaded and unloaded is a relatively heavy metal part, the drive electric actuator 3110 drives the moving push plate 3109 to move. The moving push plate 3109 drives the rack connecting rod 3108 to move. The rack connecting rod 3108 drives the moving rack 3107 to move. During the movement of the moving rack 3107, the rotating gear 3106 rotates. The rotating gear 3106 rotates, which drives the mounting rotating shaft 3105 to rotate. The rotating shaft 3105 rotates, which drives the gasket mounting bracket 3104 to rotate. The rotation of the gasket mounting bracket 3104 drives the clamping gasket to move to one side of the clamping mounting box 3102. The drive motor 303 drives the clamping screw 302 to rotate. The rotation of the clamping screw 302 drives the moving slider to move, which in turn drives the clamping mounting plate 3101 to move towards each other. The clamping gasket contacts the material and clamps the material.

[0050] When loading and unloading lightweight and flexible materials, the air pump 3117 inflates the elastic airbag 3103 through the air supply pipe 3118. The elastic airbag 3103 inflates and expands. The inflated part of the elastic airbag 3103 pops out from the airbag outlet. The drive motor 303 drives the clamping screw 302 to rotate. The rotation of the clamping screw 302 drives the moving slider to move, thereby driving the clamping mounting plate 3101 to move towards each other to clamp the material. The elastic airbag 3103 contacts the material and clamps the material.

[0051] After clamping is completed, the feeding robot arm 2 moves along the top surface of the movable base 1 to transport the material to the designated position. The drive motor 303 drives the clamping screw 302 to rotate. The rotation of the clamping screw 302 drives the movable slider to move, thereby driving the clamping mounting plate 3101 to move in opposite directions to release the clamping of the material and transport the material to the designated position.

[0052] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A flexible material automatic loading and unloading device for CNC machine tools, comprising a movable base (1), a feeding robotic arm (2), and a clamping assembly (3), characterized in that, The feeding robotic arm (2) is mounted on the movable base (1); The clamping assembly (3) includes a mounting base plate (301) and clamping units (31). The mounting base plate (301) is rotatably connected to the feeding robot arm (2). Two clamping units (31) are provided on the side of the mounting base plate (301). Each clamping unit (31) includes a clamping mounting plate (3101), a clamping mounting box (3102), an elastic airbag (3103), and a gasket mounting bracket (3104). The clamping mounting plate (3101) is slidably mounted on the side of the mounting base plate (301). The clamping mounting box (3102) is fixedly mounted on the side of the clamping mounting plate (3101). The side of the clamping mounting box (3102) away from the clamping mounting plate (3101) has a plurality of airbag outlets. The elastic airbag (3103) is disposed in the clamping mounting box (3102). The gasket mounting bracket (3104) is rotatably mounted on the side of the clamping mounting box (3102). When the elastic airbag (3103) is inflated, part of the elastic airbag (3103) can pop out from the airbag outlet. When the clamping mounting plates (3101) move towards each other, the popped elastic airbag (3103) contacts the material and clamps the material. The gasket mounting bracket (3104) can fix the clamping gasket. When the gasket mounting bracket (3104) rotates, it can drive the clamping gasket to move. When the clamping mounting plates (3101) move towards each other to clamp, the clamping gasket can contact the material and clamp it.

2. The automatic loading and unloading device for flexible materials in CNC machine tools according to claim 1, characterized in that, The clamping unit (31) further includes a mounting rotating shaft (3105), a rotating gear (3106), a movable rack (3107), a rack connecting rod (3108), a movable push plate (3109), and a drive electric push rod (3110). Two rotating mounting blocks are fixedly mounted on the side of the clamping mounting box (3102). The bottom end of the gasket mounting bracket (3104) is fixedly mounted with a mounting rotating shaft (3105). The mounting rotating shaft (3105) is rotatably connected to the rotating mounting blocks. The rotating gear (3106) is fixedly sleeved on the mounting rotating shaft (3105). A movable sliding groove is provided on the side of the clamping mounting plate (3101). The rack connecting rod (3109)... 8) The movable rack (3107) is slidably installed in the movable slide groove. The movable rack (3107) is fixedly connected to the rack connecting rod (3108), and the movable rack (3107) meshes with the rotating gear (3106). The driving electric push rod (3110) is fixedly installed on the side of the clamping mounting plate (3101) away from the clamping mounting box (3102). The movable push plate (3109) is fixedly connected to the output end of the driving electric push rod (3110). The side of the clamping mounting plate (3101) away from the clamping mounting box (3102) has a movable connection port. The movable push plate (3109) passes through the movable connection port and is fixedly connected to the rack connecting rod (3108).

3. The automatic loading and unloading device for flexible materials in CNC machine tools according to claim 2, characterized in that, The clamping unit (31) further includes a rotating pressure rod (3111), a limiting rotating shaft (3112), a limiting rotating plate (3113), a spring spring (3114), a fixed limiting rod (3115), and a limiting stop (3116). Two rotating pressure rods (3111) are provided on one side of the gasket mounting bracket (3104). One end of the rotating pressure rod (3111) is rotatably mounted on the gasket mounting bracket (3104). The limiting rotating shaft (3112) is rotatably mounted on the spring spring (3114). On one side of the dynamic pressure rod (3111), the spring spring (3114) is fixedly sleeved on the limiting rotating shaft (3112), the spring spring (3114) is fixedly connected to the rotating pressure rod (3111), the limiting rotating plate (3113) is fixedly connected to the limiting rotating shaft (3112), the fixed limiting rod (3115) is fixedly installed on one side of the limiting rotating plate (3113), and the limiting stop (3116) is fixedly installed on the top of the gasket mounting bracket (3104).

4. The automatic loading and unloading device for flexible materials in CNC machine tools according to claim 3, characterized in that, The clamping unit (31) also includes an air pump (3117) and an air supply pipe (3118). The air pump (3117) is fixedly installed on the side of the mounting base plate (301). One end of the air supply pipe (3118) is fixedly connected to the air pump (3117), and the other end passes through the clamping mounting box (3102) and is fixedly connected to the elastic airbag (3103).

5. The automatic loading and unloading device for flexible materials in CNC machine tools according to claim 4, characterized in that, The clamping assembly (3) further includes a clamping lead screw (302) and a drive motor (303). The mounting base plate (301) has a lead screw mounting groove on its side. The clamping lead screw (302) is rotatably mounted in the lead screw mounting groove. A movable slider is threaded on the clamping lead screw (302). The movable slider is slidably engaged with the lead screw mounting groove. The movable slider is fixedly connected to the clamping mounting plate (3101). The drive motor (303) is fixedly mounted on the top of the mounting base plate (301). The drive shaft of the drive motor (303) passes through the mounting base plate (301) and is fixedly connected to the clamping lead screw (302).

6. The automatic loading and unloading device for flexible materials in CNC machine tools according to claim 3, characterized in that, The gasket mounting bracket (3104) has a gasket protrusion (3119) fixedly installed on its side. The width of the gasket protrusion (3119) is greater than the width of the rotating pressure rod (3111).

7. The automatic loading and unloading device for flexible materials in CNC machine tools according to claim 5, characterized in that, The clamping screw (302) is a bidirectional threaded screw.

8. The automatic loading and unloading device for flexible materials in CNC machine tools according to claim 1, characterized in that, The feeding robotic arm (2) is slidably connected to the movable base (1), and the feeding robotic arm (2) can move along the top surface of the movable base (1).

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