A fast and automatic material preparation, loading and unloading mechanism for pipe fittings

Abstract

The present invention discloses a mechanism for rapid and automatic material preparation, loading and unloading of pipe fittings, comprising a frame, several groups of channel components and lifting components arranged in parallel, a linkage component, a material preparation component and a locking device; the channel component comprises an upper clamping plate and a lower clamping plate installed on the frame, the upper clamping plate and the lower clamping plate are arranged up and down to form a material unloading channel between the two; the lifting component is installed on the frame and connected to the upper clamping plate to drive the upper clamping plate to lift; the linkage component is used to realize the synchronous operation of each lifting component; the material preparation component comprises a material preparation plate and a driving device, the material preparation plate is slidably matched on the side of the upper clamping plate, so that the material preparation plate and the upper clamping plate are arranged in parallel, and the lower edges of the two are flush, and the driving device is used to drive the material preparation plate to reciprocate along the axial direction of the upper clamping plate at the inlet of the material unloading channel; the locking device is arranged at the outlet of the material unloading channel to realize cyclic opening and closing. The present invention can quickly, automatically and continuously prepare and unload materials for subsequent processes to ensure continuous automated processing and improve production efficiency.

Description

Technical Field

[0001] The invention relates to the field of mechanical technology, in particular to a rapid and automatic pipe fitting loading and unloading mechanism. Background Art

[0002] In the field of pipe fitting processing, manufacturers usually produce pipe fittings of various models and specifications, and then use pipe fitting processing equipment to process them into corresponding products.

[0003] Existing pipe processing equipment usually consists of a loading device, a unloading device, a processing device, etc. During the transportation process, pipes are prone to accumulation and jamming at the unloading device. At this time, the machine needs to be stopped for manual material sorting, resulting in the interruption of the production process of the pipe processing equipment, low continuous efficiency, and production impact. In addition, the unloading device is generally composed of multiple groups of upper and lower clamps. In actual production, the types and sizes of pipes are diverse. Different sizes of clamp spacing need to be adjusted for different pipes. In the existing technology, the clamps need to be adjusted one by one, which wastes time and affects production efficiency. It also cannot ensure that all clamps are adjusted consistently, which may cause the pipes to deviate or even get stuck during the unloading process. Summary of the invention

[0004] The object of the present invention is to provide a rapid and automatic pipe fitting loading and unloading mechanism, which can realize the subsequent process of material preparation and unloading rapidly and automatically, and has a simple structure and flexible and accurate adjustment.

[0005] In order to achieve the above object, the solution of the present invention is:

[0006] A mechanism for rapid and automatic material preparation and loading and unloading of pipe fittings, comprising a frame of pipe fitting processing equipment, several groups of channel assemblies and lifting assemblies arranged in parallel, a linkage assembly, a material preparation assembly and a locking device; the channel assembly comprises an upper clamping plate and a lower clamping plate installed on the frame, the upper clamping plate and the lower clamping plate are arranged up and down to form a material discharge channel therebetween; the lifting assembly is installed on the frame and connected with the upper clamping plate, for driving the upper clamping plate to perform lifting and lowering movements relative to the lower clamping plate; the linkage assembly is used to realize synchronous operation of the lifting assemblies; the material preparation assembly comprises a material preparation plate and a driving device, the material preparation plate is slidably engaged with the side edge of the upper clamping plate, so that the material preparation plate and the upper clamping plate are arranged in parallel, and the lower edges of the two are flush, and the driving device is used to drive the material preparation plate to reciprocate along the axial direction of the upper clamping plate at the inlet of the material discharge channel; the locking device is arranged at the outlet of the material discharge channel to realize cyclic opening and closing.

[0007] The lower edge of the upper clamping plate includes a first bottom edge arranged parallel to the upper surface of the lower clamping plate, a first hypotenuse connected to the upper end of the first bottom edge and inclined upward, the first bottom edge and the lower clamping plate serve as the outlet of the discharge channel, and the first hypotenuse and the lower clamping plate serve as the inlet of the discharge channel.

[0008] The lower edge of the monolithic plate comprises a second bottom edge arranged in parallel with the first bottom edge, and a second oblique edge connected to the upper end of the second bottom edge and inclined upward, wherein the second oblique edge is composed of a plurality of steps.

[0009] The steps are tooth-shaped or wave-shaped.

[0010] The driving device is a cylinder, a hydraulic cylinder, a telescopic motor or an electric push rod.

[0011] The driving device is set to be closed under normal conditions, and a sensor for detecting pipe fittings is provided at the outlet of the feeding channel. When the sensor detects that there are no pipe fittings at the outlet, a signal is sent to start the driving device to perform the whole material operation.

[0012] The angle between the movement direction of the upper clamping plate driven by the lifting assembly and the unloading channel is 45° upwards.

[0013] The lifting assembly includes a fixed plate installed on the frame, a first fixed block connected to the fixed plate, a second fixed block connected to the upper clamping plate, a screw and a first bevel gear. The screw passes through and is threadedly engaged with the first and second fixed blocks in sequence, and the angle between the screw and the discharge channel is 45° upward. The first bevel gear is connected to the end of the screw.

[0014] The described rapid and automatic pipe loading and unloading mechanism also includes a linkage assembly for the synchronous operation of the described lifting assemblies, the linkage assembly includes a rotating shaft that rotates through the described fixed plates and is horizontally arranged, and a plurality of second bevel gears connected to the rotating shaft, the first bevel gears corresponding to and meshing with the second bevel gears one by one.

[0015] The locking device includes a locking assembly, a telescopic rod and a linkage; the locking assembly includes a shaft member rotatably engaged with the frame, and a pushing member, a limiting member and a transition member formed by the outer circumference of the shaft member extending radially therefrom, the transition member being provided with a waist hole, and an angle being formed between the pushing member and the limiting member; the telescopic rod is mounted on the frame and is perpendicular to the shaft member; the linkage member is connected to the telescopic rod, and a movable rod is provided on its surface, which is movably engaged with the waist hole; during operation, the telescopic rod is telescopically moved to drive the linkage member to move axially, and the locking assembly is rotated through the sliding engagement between the movable rod and the waist hole to cyclically open and close the outlet of the feeding channel.

[0016] The waist hole is arranged along the axial direction of the adapter.

[0017] The included angle formed by the pushing member and the limiting member is 90°, and the included angle formed by the pushing member and the adapter member is 135°.

[0018] The outer periphery of the shaft is square; one end of the pushing member is movably sleeved on the outer periphery of the shaft and connected to the end of the adapter; the limiting member is connected to the outer end of the shaft to limit the pushing member.

[0019] The movable end of the pushing member is provided with a curved surface.

[0020] After adopting the above technical scheme, the present invention arranges a material-forming plate on the side of the upper clamp, and drives the material-forming plate to perform reciprocating motion through a driving device to change the size of the inlet of the unloading channel, and at the same time cooperates with the locking device to open and close the outlet of the unloading channel, so that the pipes that may be accumulated at the inlet of the unloading channel are pushed and dispersed, and move toward the outlet again under the influence of their own weight, thereby enabling the equipment to quickly and automatically and continuously prepare and unload materials for subsequent processes to ensure continuous automated processing of subsequent processes and improve production efficiency; at the same time, through the lifting components corresponding to each upper clamp, the upper clamp is quickly lifted and lowered relative to the unloading channel to adjust the unloading channel, so that the equipment can quickly adapt to the switching of pipes of multiple specifications and types, thereby meeting the digital control and monitoring requirements of the entire pipe processing equipment, and can increase the production efficiency of pipe processing equipment on the market by multiple levels.

[0021] In addition, the adjustment direction of the upper clamp of the present invention forms an upward angle of 45° with the unloading channel, so as to achieve the purpose of synchronous adjustment of the clamp spacing and the outlet of the unloading channel, which can improve the adjustment speed, reduce the control mechanism, and reduce the production cost; the rapid lifting and lowering of multiple upper clamps, that is, the synchronous adjustment of multiple channel components, is realized through the lifting assembly and the linkage assembly that links the lifting assemblies, so as to ensure a consistent adjustment effect, so that the equipment can quickly adapt to the switching of pipe fittings of multiple specifications and types, reduce the downtime waiting time, and further improve the production efficiency; the locking device of the present invention drives the linkage part to make reciprocating axial movement through the telescopic movement of the telescopic rod, thereby driving the locking assembly for limiting the pipe fitting to make reciprocating swing to realize the discharge and unloading of the pipe fittings to be processed by the pipe fitting processing equipment, and they are pushed to the subsequent processing station one by one by the locking assembly, and the end alignment of the pipe fittings is realized, and when the locking assembly is in the locked state, the subsequent queued pipe fittings can maintain an orderly standby state. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The three-dimensional structure of the specific embodiment of the present invention Figure 1 ;

[0023] Figure 2 The three-dimensional structure of the specific embodiment of the present invention Figure 2 ;

[0024] Figure 3 It is a structural schematic diagram of a specific embodiment of the present invention;

[0025] Figure 4 for Figure 3 The enlarged view of point D in the middle;

[0026] Figure 5 for Figure 1 A magnified view of the center A (showing the monolithic component);

[0027] Figure 6 for Figure 1 The enlarged view of point B in the middle (showing the lifting assembly and linkage assembly);

[0028] Figure 7 for Figure 2 Enlarged view of point C in the middle (showing the locking device);

[0029] Explanation of the accompanying drawings: frame 10; channel assembly 20; upper clamping plate 21; first bottom edge 211; first bevel edge 212; lower clamping plate 22; unloading channel 23; lifting assembly 30; fixing plate 31; first fixing block 32; second fixing block 33; screw 34; first bevel gear 35; linkage assembly 40; rotating shaft 41; second bevel gear 42; whole material assembly 50; whole material plate 51; second bottom edge 511; second bevel edge 512; driving device 52; locking device 60; locking assembly 61; shaft member 611; pushing member 612; arc surface 6121; limiting member 613; adapter member 614; waist hole 6141; telescopic rod 62; linkage member 63; movable rod 631. DETAILED DESCRIPTION

[0030] In order to further explain the technical solution of the present invention, the present invention is described in detail below through specific embodiments.

[0031] The present invention is a rapid and automatic pipe material preparation and loading and unloading mechanism, comprising a frame 10 of pipe processing equipment, a plurality of parallel channel components 20 and lifting components 30, a material preparation component 50 and a locking device 60.

[0032] The channel assembly 20 includes an upper clamping plate 21 and a lower clamping plate 22 mounted on the frame 10 . The upper clamping plate 21 and the lower clamping plate 22 are arranged up and down to form a material discharge channel 23 therebetween.

[0033] The lifting assembly 30 is mounted on the frame 10 and connected to the upper clamping plate 21 , and is used to drive the upper clamping plate 21 to perform lifting motion relative to the lower clamping plate 22 .

[0034] The whole material assembly 50 includes a whole material plate 51 and a driving device 52. The whole material plate 51 is slidably fitted on the side of the upper clamp plate 21 so that the whole material plate 51 and the upper clamp plate 21 are arranged side by side, and the lower edges of the two are flush. Then, the whole material plate 51 can adjust the height (referring to the upper and lower spacing of the unloading channel 23) synchronously with the upper clamp plate 21; the driving device 52 is used to drive the whole material plate 51 to reciprocate along the axial direction of the upper clamp plate 21 at the entrance of the unloading channel 23, so that the pipe fittings stacked together at the entrance of the unloading channel 23 automatically and orderly slide into the unloading channel 23, and the whole material plate 51 is pushed upward to open the outlet of the unloading channel 23, and the whole material plate 51 is reset downward to close the outlet of the unloading channel 23.

[0035] The locking device 60 is arranged at the outlet of the material discharge channel 23 to realize cyclic opening and closing.

[0036] refer to Figures 1 to 7 Shown is a specific embodiment of the present invention.

[0037] refer to Figure 5 As shown, the lower edge of the upper clamp plate 21 includes a first bottom edge 211 arranged parallel to the upper surface of the lower clamp plate 22, and a first oblique edge 212 connected to the upper end of the first bottom edge 211 and inclined upward. The first bottom edge 211 and the lower clamp plate 22 serve as an outlet of the discharge channel 23, and the first oblique edge 212 and the lower clamp plate 22 serve as an inlet of the discharge channel 23.

[0038] The lower edge of the above-mentioned whole material plate 51 includes a second bottom edge 511 arranged in parallel with the first bottom edge 211, and a second bevel 512 connected to the upper end of the second bottom edge 511 and inclined upward. The second bevel 512 is composed of a plurality of steps to increase the friction between the second bevel 512 and the pipe fittings and improve the whole material effect.

[0039] The steps are toothed or wavy.

[0040] The driving device 52 is a pneumatic cylinder, a hydraulic cylinder, a telescopic motor or an electric push rod.

[0041] The above-mentioned driving device 52 can be set to work continuously under normal conditions, or it can be set to be closed under normal conditions, and a sensor is set at the outlet of the unloading channel 23. When it is detected that there are no pipes at the outlet, it is judged that there is material piling at the import, so that the driving device 52 is automatically started to carry out material sorting work.

[0042] The lifting assembly 30 drives the upper clamping plate 21 to move in a direction such that the included angle between the upper clamping plate 21 and the material discharge channel 23 is 45° upward.

[0043] refer to Figure 6As shown, the lifting assembly 30 includes a fixed plate 31 mounted on the frame 10, a first fixed block 32 connected to the fixed plate 31, a second fixed block 33 connected to the upper clamping plate 21, a screw 34 and a first bevel gear 35. The screw 34 passes through and is threadedly engaged with the first fixed block 32 and the second fixed block 33 in sequence, and the angle between the screw 34 and the discharge channel 23 is 45° upward. The first bevel gear 35 is connected to the end of the screw 34.

[0044] The present invention also includes a linkage assembly 40 for realizing synchronous operation of each lifting assembly 30. The linkage assembly 40 includes a rotating shaft 41 that rotates through each fixing plate 31 and is horizontally arranged, and a plurality of second bevel gears 42 connected to the rotating shaft 41. The first bevel gears 35 correspond to and mesh with the second bevel gears 42 one by one. In actual use, a power device can be set to drive the rotating shaft 41 or one of its upper clamping plates 21. At this time, the coordination process of the lifting component 30 and the linkage component 40 is as follows: when the rotating shaft 41 rotates, the second bevel gear 42 on the rotating shaft 41 and the first bevel gear 35 of each lifting component 30 are turned to drive, so that the screw 34 of each lifting component 30 rotates synchronously. Since the first fixed block 32 is fixedly connected to the fixed plate 31, the second fixed block 33 is lifted and lowered due to the rotation of the screw 34, that is, the upper clamping plate 21 is driven to lift and lower at the same time. Since the angle between the screw 34 and the discharge channel 23 is 45°, that is, the angle between the screw 34 and the first bottom edge 211 is 45°, it can be known from the force analysis that the adjustment spacing of the discharge channel 23 is always the same as the change in the opening of the discharge channel 23, thereby achieving the purpose of synchronous adjustment.

[0045] refer to Figure 7 As shown, the locking device 60 includes a locking assembly 61, a telescopic rod 62 and a linkage member 63. The locking assembly 61 includes a shaft member 611 rotatably fitted on the frame 10, and a push member 612, a stop member 613 and a transfer member 614 extending radially from the outer periphery of the shaft member 611. The transfer member 614 is provided with a long waist hole 6141, and an angle is formed between the push member 612 and the stop member 613. The telescopic rod 62 is mounted on the frame 10 and is perpendicular to the shaft member 611. The linkage member 63 is connected to the telescopic rod 62, and a movable rod 631 is provided on its surface, and the movable rod 631 is movably fitted in the waist hole 6141. When working, the telescopic rod 62 moves telescopically to drive the linkage member 63 to move axially, and the locking assembly 61 is rotated by the sliding fit between the movable rod 631 and the waist hole 6141 to cyclically open and close the outlet of the feeding channel 23.

[0046] The waist hole 6141 is disposed along the axial direction of the adapter 614 .

[0047] The angle formed by the pushing member 612 and the limiting member 613 is 90°; the angle formed by the pushing member 612 and the adapter 24 is 135°.

[0048] The parts of the locking assembly 61 can be integrally formed or split. In this embodiment, the outer periphery of the shaft 611 is square (or other non-circular shapes that can prevent the pusher 612 from rotating in the circumferential direction of the rotating shaft 41); the pusher 612 is movably sleeved on the outer periphery of the shaft 611 (i.e., the end of the pusher 612 is provided with a square hole matching the shaft 611) to achieve adjustment so that the present invention can adapt to different pipes, and the movable end of the pusher 612 is provided with an arc surface 6121 to achieve a smooth transition between the movable end and the pipe when the pusher 612 rotates; the limiter 613 is connected to the end of the shaft 611 to prevent the pusher 612 from falling out; the adapter 614 and the pusher 612 can be directly welded together.

[0049] The working principle of the above-mentioned locking device 60 is as follows: when working, the telescopic rod 62 telescopically moves to drive the linkage member 63 to move axially, and the locking assembly 61 is rotated through the sliding cooperation between the movable rod 631 and the waist hole 6141 to realize locking or opening the unloading channel 23. The rotation of the pushing member 612 gradually lifts one end of the first pipe fitting at the outlet of the unloading channel 23. During the lifting process, the pipe fitting slides to the other end due to the action of gravity, thereby realizing the end alignment of multiple pipe fittings. When the pushing member 612 rotates to the vertical direction, the first pipe fitting is pushed out and sent to the subsequent processing station, and the movement of the second pipe fitting is locked. After the pushing is completed, the limit member 613 and the pushing member 612 are reset, and the second pipe fitting locked by the pushing member 612 automatically slides to the top of the pushing member 612, and the work is cyclically carried out to achieve orderly and rapid unloading.

[0050] Through the above scheme, the present invention sets a material-forming plate 51 on the side of the upper clamp 21, and drives the material-forming plate 51 to reciprocate through the driving device 52 to change the inlet size of the unloading channel 23, and cooperates with the locking device 60 to open and close the outlet of the unloading channel 23, so that the pipes that may be accumulated at the inlet of the unloading channel 23 are pushed and dispersed, and move to the outlet again under the influence of their own weight, so that the equipment can quickly and automatically form and unload materials for subsequent processes to ensure continuous automated processing of subsequent processes and improve production efficiency; at the same time, through the lifting components 30 corresponding to each upper clamp 21, the upper clamp 21 is quickly lifted and lowered relative to the unloading channel 23 to adjust the unloading channel 23, so that the equipment can quickly adapt to the switching of pipes of multiple specifications and types, thereby meeting the digital control and monitoring requirements of the entire pipe processing equipment, and can increase the production efficiency of pipe processing equipment on the market by multiple levels.

[0051] In addition, the adjustment direction of the upper clamping plate 21 of the present invention forms an upward angle of 45° with the unloading channel 23, so as to achieve the purpose of synchronous adjustment of the clamping plate spacing and the outlet of the unloading channel 23, which can improve the adjustment speed, reduce the control mechanism, and reduce the production cost; the rapid lifting and lowering of multiple upper clamping plates 21, that is, the synchronous adjustment of multiple channel assemblies 20, is realized through the lifting assembly 30 and the linkage assembly 40 that links each lifting assembly 30, so as to ensure a consistent adjustment effect, so that the equipment can quickly adapt to the switching of pipe fittings of multiple specifications and types, reduce the downtime waiting time, and further improve the production efficiency; the locking device 60 of the present invention drives the linkage member 63 to make reciprocating axial movement through the telescopic movement of the telescopic rod 62, thereby driving the locking assembly 61 for limiting the pipe fittings to make reciprocating swings to realize the discharge and unloading of the pipe fittings to be processed by the pipe fitting processing equipment, and they are pushed to the subsequent processing stations one by one by the locking assembly 61, and the end alignment of the pipe fittings is realized, and when the locking assembly 61 is in the locked state, the subsequent queued pipe fittings can maintain an orderly standby state.

[0052] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present invention.

Claims

1. A quick and automatic material preparation, loading and unloading mechanism for pipe fittings, characterized in that: It includes a frame of pipe processing equipment, several groups of channel components and lifting components arranged in parallel, linkage components, whole material components and locking devices; The channel assembly comprises an upper clamping plate and a lower clamping plate installed on the frame, wherein the upper clamping plate and the lower clamping plate are arranged up and down to form a material discharge channel therebetween; The lifting assembly is mounted on the frame and connected to the upper clamping plate, and is used to drive the upper clamping plate to perform lifting movement relative to the lower clamping plate; The linkage assembly is used to realize the synchronous operation of each lifting assembly; The material assembly includes a material plate and a driving device, wherein the material plate is slidably engaged with the side edge of the upper clamping plate so that the material plate and the upper clamping plate are arranged side by side and the lower edges of the two are flush, and the driving device is used to drive the material plate to reciprocate along the axial direction of the upper clamping plate at the inlet of the material discharge channel; The locking device is arranged at the outlet of the feeding channel to realize cyclic opening and closing.

2. A quick and automatic pipe loading and unloading mechanism as claimed in claim 1, characterized in that: The lower edge of the upper clamping plate includes a first bottom edge arranged parallel to the upper surface of the lower clamping plate, a first hypotenuse connected to the upper end of the first bottom edge and inclined upward, the first bottom edge and the lower clamping plate serve as the outlet of the discharge channel, and the first hypotenuse and the lower clamping plate serve as the inlet of the discharge channel.

3. A quick and automatic pipe loading and unloading mechanism as claimed in claim 2, characterized in that: The lower edge of the monolithic plate comprises a second bottom edge arranged in parallel with the first bottom edge, and a second oblique edge connected to the upper end of the second bottom edge and inclined upward, wherein the second oblique edge is composed of a plurality of steps.

4. A rapid and automatic pipe material preparation and loading and unloading mechanism as claimed in claim 3, characterized in that: The steps are tooth-shaped or wave-shaped.

5. A quick and automatic pipe loading and unloading mechanism as claimed in claim 1, characterized in that: The driving device is a cylinder, a hydraulic cylinder, a telescopic motor or an electric push rod.

6. A quick and automatic pipe loading and unloading mechanism as claimed in claim 1, characterized in that: The driving device is set to be closed under normal conditions, and a sensor for detecting pipe fittings is provided at the outlet of the feeding channel. When the sensor detects that there are no pipe fittings at the outlet, a signal is sent to start the driving device to perform the whole material operation.

7. A rapid and automatic pipe material preparation and loading and unloading mechanism as claimed in claim 1, characterized in that: The angle between the movement direction of the upper clamping plate driven by the lifting assembly and the unloading channel is 45° upwards.

8. A quick and automatic pipe material preparation and loading and unloading mechanism as claimed in claim 7, characterized in that: The lifting assembly includes a fixed plate installed on the frame, a first fixed block connected to the fixed plate, a second fixed block connected to the upper clamping plate, a screw and a first bevel gear. The screw passes through and is threadedly engaged with the first and second fixed blocks in sequence, and the angle between the screw and the discharge channel is 45° upward. The first bevel gear is connected to the end of the screw.

9. A quick and automatic pipe loading and unloading mechanism as claimed in claim 8, characterized in that: It also includes a linkage component for realizing synchronous operation of each lifting component, the linkage component includes a rotating shaft that rotates through each fixed plate and is horizontally arranged, and a plurality of second bevel gears connected to the rotating shaft, and the first bevel gears correspond to and mesh with the second bevel gears one by one.

10. A quick and automatic pipe loading and unloading mechanism as claimed in claim 1, characterized in that: The locking device comprises a locking assembly, a telescopic rod and a linkage member; the locking assembly comprises a shaft member rotatably matched with the frame, and a push member, a limit member and a transition member formed by the outer circumference of the shaft member extending radially therefrom, the transition member being provided with a waist hole, and an angle being formed between the push member and the limit member; the telescopic rod is mounted on the frame and is perpendicular to the shaft member; the linkage member is connected to the telescopic rod, and a movable rod is provided on its surface, and the movable rod is movably matched in the waist hole; During operation, the telescopic movement of the telescopic rod drives the linkage member to move axially, and the sliding connection between the movable rod and the waist hole causes the locking assembly to rotate to cyclically open and close the outlet of the material discharge channel.

11. A quick and automatic pipe material preparation and loading and unloading mechanism as claimed in claim 10, characterized in that: The waist hole is arranged along the axial direction of the adapter.

12. A quick and automatic pipe material preparation and loading and unloading mechanism as claimed in claim 10, characterized in that: The included angle formed by the pushing member and the limiting member is 90°, and the included angle formed by the pushing member and the adapter member is 135°.

13. A quick and automatic pipe loading and unloading mechanism as claimed in claim 12, characterized in that: The outer periphery of the shaft is square; one end of the pushing member is movably sleeved on the outer periphery of the shaft and connected to the end of the adapter; the limiting member is connected to the outer end of the shaft to limit the pushing member.

14. A quick and automatic pipe loading and unloading mechanism as claimed in claim 10, characterized in that: The movable end of the pushing member is provided with a curved surface.

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