Automatic core pulling device for interface tube core of casing processing

Abstract

The utility model relates to mechanical processing technical field, concretely is a kind of interface pipe core automatic core pulling device for casing processing, including orientation driving mechanism, orientation core pulling mechanism, pneumatic connecting mechanism and casing fixing mechanism, the orientation core pulling mechanism is slidably connected on orientation driving mechanism, and orientation core pulling mechanism can be driven by orientation driving mechanism and move horizontally along the axial direction of orientation driving mechanism, the pneumatic connecting mechanism is fixed in the side of orientation core pulling mechanism away from orientation driving mechanism. When using, by setting steering motor on support base, and setting pivot connection platform on the transmission shaft end portion of steering motor to be used to connect pneumatic connecting mechanism, and setting casing fixing mechanism on the side of pneumatic connecting mechanism to fix casing, when casing processing is completed, the restraint of casing fixing mechanism to casing is released and casing is driven to rotate downward by steering motor, so that casing is separated from the surface of casing fixing mechanism under the action of gravity, reaches the effect of automatic core pulling.

Description

Technical Field

[0001] This utility model relates to the field of mechanical processing technology, specifically to an automatic core-pulling device for interface tube cores in sleeve processing. Background Technology

[0002] The sleeve interface core is a key component used in machining to connect or support the sleeve. It fixes the position of the sleeve from the inside by pressure, so that other mechanical equipment can process the outer surface of the sleeve.

[0003] To improve the stability of sleeve fixation and ease of sleeve installation, existing sleeve interface cores are generally set horizontally or vertically upwards. This allows operators to easily attach the sleeve to the outer surface of the interface core and prevents the sleeve from falling off under gravity. However, even after the sleeve is manufactured, it does not fall directly off the interface core; it needs to be manually removed, increasing the complexity of manual operation.

[0004] Therefore, this application proposes an automatic core-pulling device for interface tube cores in sleeve processing, which is used to achieve the purpose of automatically separating the sleeve after the sleeve processing is completed. Utility Model Content

[0005] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide an automatic core-pulling device for interface tube cores in sleeve processing, which solves the problem that the core-pulling process of sleeves in the prior art requires manual operation.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic core-pulling device for interface tube cores in sleeve processing, comprising a guide drive mechanism, a guide core-pulling mechanism, a pneumatic connection mechanism, and a sleeve fixing mechanism. The guide core-pulling mechanism is slidably connected to the guide drive mechanism, and the guide core-pulling mechanism can be driven by the guide drive mechanism to move horizontally along the axial direction of the guide drive mechanism. The pneumatic connection mechanism is fixed on the side of the guide core-pulling mechanism away from the guide drive mechanism, and the sleeve fixing mechanism is fixed on the side of the pneumatic connection mechanism. The guide core-pulling mechanism includes a support base, which is mounted on the guide drive mechanism. A steering motor is provided on the side of the support base away from the guide drive mechanism. A rotating shaft connecting platform is fixed to the end of the drive shaft of the steering motor, and the pneumatic connection mechanism is mounted on the rotating shaft connecting platform.

[0007] Preferably, the guide drive mechanism includes two horizontal guide rails, which are arranged horizontally vertically. Each horizontal guide rail is provided with a traction slider. Both ends of the two horizontal guide rails are fixed with a connecting baffle. A drive screw is rotatably connected between the two horizontal guide rails. A screw drive motor is fixed on one of the connecting baffles. The drive shaft of the screw drive motor is fixedly connected to the drive screw. The outer surface of the support base is symmetrically provided with mounting wings, and the two mounting wings are respectively bolted to two traction sliders. The back of the support base is provided with a driven slider, which is slidably connected to the drive screw.

[0008] Preferably, the pneumatic connection mechanism includes a pneumatic equipment connection platform, the back of which is fixedly connected to a rotating shaft connection platform, a quick-connect pipe is provided on the side of the pneumatic equipment connection platform, an air supply module is provided on the front of the pneumatic equipment connection platform, an air outlet pipe is provided on the side of the air supply module, and the sleeve fixing mechanism is installed on the air outlet pipe.

[0009] Preferably, the pneumatic equipment connecting platform has a module mounting slot on the side away from the rotating shaft connecting platform. The module mounting slot is connected to the quick-connect pipe. The air supply module is detachably installed inside the module mounting slot. An air inlet pipe is fixed on the side of the air supply module away from the air outlet pipe. The air inlet pipe extends into the interior of the quick-connect pipe, and the connection between the air inlet pipe and the quick-connect pipe is sealed.

[0010] Preferably, one end of the module mounting slot extends through the side of the pneumatic equipment connecting platform, the cross-section of the air delivery module is adapted to the cross-section inside the module mounting slot, and the air delivery module and the pneumatic equipment connecting platform are connected by bolts.

[0011] Preferably, the sleeve fixing mechanism includes an interface core tube, which is connected to the air outlet tube, and an inflatable air bladder is sleeved on the outer surface of the interface core tube.

[0012] Preferably, the outer surface of the vent pipe is provided with threads, and the end of the interface core tube is provided with a threaded connector, which is threadedly connected to the vent pipe.

[0013] Preferably, the interior of the inflatable airbag is connected to the interior of the interface core tube, and the outer surface of the inflatable airbag is provided with a plurality of equally spaced annular protruding airbags.

[0014] Preferably, the outer surface of the interface core tube is provided with a plurality of through grooves at equal intervals, and the inner wall of the inflatable airbag passes through the through grooves and extends into the interior of the interface core tube and is fixedly connected to the inner wall of the interface core tube.

[0015] Compared with the prior art, the beneficial effects of this utility model are: This utility model discloses an automatic core-pulling device for interface tube cores in sleeve processing. It features a steering motor mounted on a support base, a rotating shaft connecting platform at the end of the steering motor's drive shaft for connecting a pneumatic connection mechanism, and a sleeve fixing mechanism on the side of the pneumatic connection mechanism to fix the sleeve. After the sleeve processing is completed, the constraint of the sleeve fixing mechanism on the sleeve is released, and the sleeve is driven downward by the steering motor, thereby causing the sleeve to detach from the surface of the sleeve fixing mechanism under the action of gravity, achieving the effect of automatic core pulling.

[0016] This utility model discloses an automatic core-pulling device for interface tube cores in sleeve processing. By setting a steering motor to drive the direction of the pneumatic connection mechanism, after the sleeve is fixed by the sleeve fixing mechanism, the angle of the sleeve can be changed by the steering motor, thereby adapting to processing instruments with different angles to process the sleeve, or feeding materials from different angles during sleeve installation, further achieving the effect of convenient use.

[0017] This utility model discloses an automatic core-pulling device for interface tube cores in sleeve processing. It sets up an expansion bladder to support the interface core tube and connects it to an external pressure transmission device through a quick-connect pipe. The expansion bladder is inflated by gas pressure to fix the sleeve, thereby achieving the purpose of protecting the sleeve and adapting to sleeves with different inner diameters. At the same time, during the core-pulling process, the expansion bladder is slowly released to release the constraint on the sleeve, so that the sleeve slowly detaches under the action of gravity, avoiding the sleeve from falling suddenly and causing damage. Attached Figure Description

[0018] Figure 1 This is a front view of the structure of this utility model.

[0019] Figure 2 This is a three-dimensional structural schematic diagram of the present invention.

[0020] Figure 3 This is a side view of the structure of this utility model.

[0021] Figure 4 This is a schematic diagram of the structural assembly of this utility model.

[0022] Figure 5 This is an assembly diagram of the pneumatic connection mechanism of this utility model.

[0023] Figure 6 This is an assembly diagram of the sleeve fixing mechanism of this utility model.

[0024] Figure 7 This is a cross-sectional view of the sleeve fixing mechanism of this utility model.

[0025] Component designation explanation: 1. Guide drive mechanism; 11. Horizontal guide rail; 12. Connecting baffle; 13. Drive screw; 14. Screw drive motor; 15. Traction slider; 2. Guide core-pulling mechanism; 21. Support base; 22. Mounting wing; 23. Driven slider; 24. Steering motor; 25. Rotary shaft connecting platform; 3. Pneumatic connection mechanism; 31. Pneumatic equipment connection platform; 32. Module mounting slot; 33. Quick-connect pipe; 34. Air supply module; 35. Air inlet pipe; 36. Air outlet pipe; 4. Sleeve fixing mechanism; 41. Interface core tube; 42. Threaded connector; 43. Inflatable airbag. Detailed Implementation

[0026] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0027] Please see Figures 1 to 7 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0028] like Figures 1-3 As shown, this utility model provides an automatic core-pulling device for interface tube cores in sleeve processing, including a guide drive mechanism 1, a guide core-pulling mechanism 2, a pneumatic connection mechanism 3, and a sleeve fixing mechanism 4. The guide core-pulling mechanism 2 is slidably connected to the guide drive mechanism 1, and the guide core-pulling mechanism 2 can be driven by the guide drive mechanism 1 to move horizontally along the axial direction of the guide drive mechanism 1. The pneumatic connection mechanism 3 is fixed on the side of the guide core-pulling mechanism 2 away from the guide drive mechanism 1, and the sleeve fixing mechanism 4 is fixed on the side of the pneumatic connection mechanism 3. In use, the guide drive mechanism 1 is bolted to a vertical bracket on the operating table, and the guide drive mechanism 1 and the guide core-pulling mechanism 2 are connected to an external power source, while the pneumatic connection mechanism 3 is connected to an external pressure supply device. The pressure supply device supplies high-pressure gas to the pneumatic connection mechanism 3, and the high-pressure gas causes the sleeve fixing mechanism 4 to expand and fix the sleeve fitted on the outer surface of the sleeve fixing mechanism 4.

[0029] Specifically, the guide core-pulling mechanism 2 includes a support base 21, which is mounted on the guide drive mechanism 1, allowing the support base 21 to move horizontally under the drive of the guide drive mechanism 1. This allows it to cooperate with the sleeve processing equipment to process the sleeve, thereby increasing the processing range of the equipment. A steering motor 24 is provided on the side of the support base 21 away from the guide drive mechanism 1. A rotating shaft connecting platform 25 is fixed to the end of the drive shaft of the steering motor 24. A pneumatic connection mechanism 3 is mounted on the rotating shaft connecting platform 25. The angle of the pneumatic connection mechanism 3 mounted on the rotating shaft connecting platform 25 can be adjusted by the steering motor 24, thereby changing the sleeve angle restricted by the sleeve fixing mechanism 4. This further increases the processing range and feeding angle of the sleeve. After the sleeve processing is completed, the constraint of the sleeve fixing mechanism 4 on the sleeve is released, and the sleeve is turned downward by the steering motor 24, allowing the sleeve to detach from the surface of the sleeve fixing mechanism 4 under the action of gravity.

[0030] like Figure 2 and Figure 3 As shown in some embodiments, the guide drive mechanism 1 of this utility model includes two horizontal guide rails 11, which are arranged horizontally and fixedly installed by bolts. Each horizontal guide rail 11 is provided with a traction slider 15 that moves horizontally along the axial direction of the horizontal guide rail 11. Both ends of the two horizontal guide rails 11 are fixed with connecting baffles 12 for connecting the two horizontal guide rails 11, so that the two horizontal guide rails 11 become a whole. A drive screw 13 is rotatably connected between the two horizontal guide rails 11. A screw drive motor 14 is fixed on one side of the connecting baffle 12. The drive shaft of the screw drive motor 14 is fixedly connected to the drive screw 13. The screw drive motor 14 is a servo motor that can drive the drive screw 13 to rotate forward and reverse, and adjust the speed according to the processing requirements. The outer surface of the support base 21 is symmetrically provided with mounting wings 22. The two mounting wings 22 are respectively connected to the two traction sliders 15 by bolts, so that the movement trajectory of the support base 21 is limited by the traction sliders 15, thereby improving the stability of movement. The back of the support base 21 is provided with a driven slider 23, which is slidably connected to the drive screw 13. When the drive screw 13 rotates, it can drive the driven slider 23 to move in the corresponding direction through the spiral groove on its surface, thereby driving the guide core pulling mechanism 2 to move as a whole.

[0031] like Figure 2As shown, in some embodiments, the pneumatic connection mechanism 3 of this utility model includes a pneumatic equipment connection platform 31. The back of the pneumatic equipment connection platform 31 is fixedly connected to the rotating shaft connection platform 25, so that the entire pneumatic connection mechanism 3 can move with the movement of the rotating shaft connection platform 25. A quick-connect pipe 33 is provided on the side of the pneumatic equipment connection platform 31. The quick-connect pipe 33 is connected to the conduit of an external pressure transmission device, so that gas pressure can be input into the interior of the pneumatic equipment connection platform 31. An air transmission module 34 is provided on the front of the pneumatic equipment connection platform 31. An air outlet pipe 36 is provided on the side of the air transmission module 34. A sleeve fixing mechanism 4 is installed on the air outlet pipe 36. The externally input gas pressure acts on the sleeve fixing mechanism 4 through the air transmission module 34 and the air outlet pipe 36, so that the sleeve fixing mechanism 4 expands, thereby fixing the sleeve inside the sleeve.

[0032] like Figure 4 and Figure 5 As shown, in some embodiments, the side of the pneumatic equipment connecting platform 31 away from the rotating shaft connecting platform 25 is provided with a module mounting groove 32. The module mounting groove 32 is connected to the quick-connect pipe 33. The air supply module 34 is detachably installed inside the module mounting groove 32. The side of the air supply module 34 away from the air outlet pipe 36 is fixed with an air inlet pipe 35. The air inlet pipe 35 extends into the interior of the quick-connect pipe 33, and the connection between the air inlet pipe 35 and the quick-connect pipe 33 is sealed. The gas delivery module 34 is installed in the module mounting slot 32 in a detachable manner, so that the gas delivery module 34 can be easily disassembled and assembled, so as to facilitate maintenance and replacement of the gas delivery module 34 with gas outlet pipes 36 of different lengths and diameters, thereby further improving the adaptability of the device.

[0033] like Figure 5 As shown, in some embodiments, one end of the module mounting groove 32 of this utility model penetrates the side of the pneumatic equipment connecting table 31, and the interior of the module mounting groove 32 has a sliding groove. The cross section of the air supply module 34 is adapted to the cross section inside the module mounting groove 32, and the air supply module 34 and the pneumatic equipment connecting table 31 are connected by bolts. When installing the gas delivery module 34, it can be inserted from one side of the module mounting slot 32, and the gas delivery module 34 can be limited by the sliding groove at the other end of the module mounting slot 32, thereby improving the stability of the gas delivery module 34 connection and the ease of installation. When the gas delivery module 34 is fixed in the module mounting slot 32 by bolts, the gas delivery module 34 is completely fixed and limited.

[0034] like Figures 5-7As shown, in some embodiments, the sleeve fixing mechanism 4 of this utility model includes an interface core tube 41, which is a tube body with one end sealed and a smooth surface; the interface core tube 41 is connected to the air outlet tube 36, and an expansion air bladder 43 is sleeved on the outer surface of the interface core tube 41. When the air outlet tube 36 outputs high-pressure gas, the high-pressure gas will fill the interior of the interface core tube 41 and cause the expansion air bladder 43 to expand outward. The outwardly expanding expansion air bladder 43 will apply pressure to the sleeve from the inner wall of the sleeve, thereby constraining and fixing the sleeve; when the constraint and fixing of the sleeve is released, it is only necessary to release the high-pressure gas in the interface core tube 41.

[0035] like Figure 5 As shown, in some embodiments, the outer surface of the air outlet pipe 36 of this utility model is provided with threads, and the end of the interface core pipe 41 is provided with a threaded connector 42. The threaded connector 42 is threadedly connected to the air outlet pipe 36, so that the sleeve fixing mechanism 4 can be easily disassembled and assembled to replace the interface core pipe 41 and the expansion air bag 43 with a suitable inner diameter of the sleeve, thereby improving the versatility and ease of use of the equipment.

[0036] like Figure 6 and Figure 7 As shown, in some embodiments, the interior of the inflatable airbag 43 of this invention is connected to the interior of the interface core tube 41. The outer surface of the inflatable airbag 43 is provided with a plurality of equidistantly distributed annular protruding airbags. The inflatable airbag 43 extends into the interior of the interface core tube 41 to improve the stability of the connection between the interface core tube 41 and the inflatable airbag 43. When the interface core tube 41 is filled with high-pressure gas, the high-pressure gas will cause the annular protruding airbags of the inflatable airbag 43 located outside the interface core tube 41 to expand outward. The expansion of the inflatable airbag 43 abuts against the inner wall of the sleeve, thereby fixing the sleeve. The inner layer of the inflatable airbag 43 is fixedly connected to the interior of the interface core tube 41, which not only improves the sealing performance at the connection between the inflatable airbag 43 and the interface core tube 41, but also prevents the inflatable airbag 43 from detaching from the outer surface of the interface core tube 41. When the sleeve is fixed by the inflatable airbag 43, the soft inflatable airbag 43 can avoid causing hard damage to the inner wall of the sleeve.

[0037] like Figure 6 and Figure 7 As shown, in some embodiments, the outer surface of the interface core tube 41 of this utility model is provided with several through grooves at equal intervals. The inner wall of the expansion airbag 43 passes through the through grooves and extends into the interior of the interface core tube 41 and is fixedly connected to the inner wall of the interface core tube 41. When the expansion airbag 43 expands, the part of the expansion airbag 43 passing through the through groove will expand to achieve the effect of resisting and fixing the inner wall of the sleeve. The expansion airbag 43 extends to the inner wall of the interface core tube 41 through the through hole on the surface of the interface core tube 41 and is fixedly connected. Thus, the expansion shape of the expansion airbag 43 can be restricted by the interface core tube 41, and the detachment of the expansion airbag 43 from the interface core tube 41 can be avoided, which would lead to air leakage.

[0038] In summary, the automatic core-pulling device for interface tube cores in sleeve processing of this utility model is achieved by setting a steering motor 24 on the support base 21, and setting a rotating shaft connecting platform 25 at the end of the drive shaft of the steering motor 24 to connect to the pneumatic connection mechanism 3, and setting a sleeve fixing mechanism 4 on the side of the pneumatic connection mechanism 3 to fix the sleeve. After the sleeve processing is completed, the constraint of the sleeve fixing mechanism 4 on the sleeve is released, and the sleeve is driven to rotate downward by the steering motor 24, so that the sleeve is detached from the surface of the sleeve fixing mechanism 4 under the action of gravity, thus achieving the effect of automatic core pulling.

[0039] The automatic core-pulling device for interface tube cores in sleeve processing of this utility model, by setting the direction of the pneumatic connection mechanism 3 driven by the steering motor 24, after the sleeve is fixed by the sleeve fixing mechanism 4, can change the angle of the sleeve by the steering motor 24, thereby adapting to processing instruments with different angles to process the sleeve, or feeding materials from different angles when installing the sleeve, further achieving the effect of convenient use.

[0040] This utility model discloses an automatic core-pulling device for interface tube cores in sleeve processing. It uses an interface core tube 41 to support and connect an expansion air bladder 43, and connects to an external pressure transmission device through a quick-connect pipe 33. The expansion air bladder 43 is inflated by gas pressure to fix the sleeve, thereby achieving the purpose of protecting the sleeve and adapting to sleeves with different inner diameters. At the same time, during the core-pulling process, the expansion air bladder 43 is slowly released to release the constraint on the sleeve, so that the sleeve slowly detaches under the action of gravity, avoiding the sleeve from falling suddenly and causing damage.

[0041] The above description is merely an illustrative embodiment of this utility model and is not intended to limit the scope of this utility model. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of this utility model should fall within the protection scope of this utility model. Furthermore, it should be noted that the components of this utility model are not limited to the overall application described above. Each technical feature described in the specification of this utility model can be used individually or in combination as needed. Therefore, this utility model naturally covers other combinations and specific applications related to the points of this utility model.

Claims

1. An automatic core-pulling device for interface tube cores in sleeve processing, characterized in that, It includes a guide drive mechanism (1), a guide core pulling mechanism (2), a pneumatic connection mechanism (3), and a sleeve fixing mechanism (4). The guide core pulling mechanism (2) is slidably connected to the guide drive mechanism (1), the pneumatic connection mechanism (3) is fixed on the side of the guide core pulling mechanism (2) away from the guide drive mechanism (1), and the sleeve fixing mechanism (4) is fixed on the side of the pneumatic connection mechanism (3). The guide core pulling mechanism (2) includes a support base (21), which is mounted on the guide drive mechanism (1). A steering motor (24) is provided on the side of the support base (21) away from the guide drive mechanism (1). A rotating shaft connecting table (25) is fixed at the end of the drive shaft of the steering motor (24). The pneumatic connection mechanism (3) is mounted on the rotating shaft connecting table (25).

2. The automatic core-pulling device for interface tube cores in sleeve processing according to claim 1, characterized in that: The guide drive mechanism (1) includes two horizontal guide rails (11), which are arranged horizontally up and down. Each horizontal guide rail (11) is provided with a traction slider (15). Both ends of the two horizontal guide rails (11) are fixed with a connecting baffle (12). A drive screw (13) is rotatably connected between the two horizontal guide rails (11). A screw drive motor (14) is fixed on one side of the connecting baffle (12). The drive shaft of the screw drive motor (14) is fixedly connected to the drive screw (13). The outer surface of the support base (21) is symmetrically fixed with mounting wings (22), and the two mounting wings (22) are respectively bolted to two traction sliders (15). The back of the support base (21) is provided with a driven slider (23), and the driven slider (23) is slidably connected to the drive screw (13).

3. The automatic core-pulling device for interface tube cores in sleeve processing according to claim 1, characterized in that: The pneumatic connection mechanism (3) includes a pneumatic equipment connection platform (31), the back of which is fixedly connected to the rotating shaft connection platform (25), a quick-connect pipe (33) is provided on the side of the pneumatic equipment connection platform (31), an air supply module (34) is provided on the front of the pneumatic equipment connection platform (31), an air outlet pipe (36) is provided on the side of the air supply module (34), and the sleeve fixing mechanism (4) is installed on the air outlet pipe (36).

4. The automatic core-pulling device for interface tube core in sleeve processing according to claim 3, characterized in that: The pneumatic equipment connecting platform (31) has a module mounting slot (32) on the side away from the rotating shaft connecting platform (25). The module mounting slot (32) is connected to the quick-connect pipe (33). The air supply module (34) is detachably installed inside the module mounting slot (32). The air supply module (34) has an air inlet pipe (35) fixed on the side away from the air outlet pipe (36). The air inlet pipe (35) extends into the interior of the quick-connect pipe (33), and the connection between the air inlet pipe (35) and the quick-connect pipe (33) is sealed.

5. The automatic core-pulling device for interface tube core in sleeve processing according to claim 4, characterized in that: One end of the module mounting slot (32) penetrates the side of the pneumatic equipment connecting table (31), the cross section of the gas delivery module (34) is adapted to the cross section inside the module mounting slot (32), and the gas delivery module (34) and the pneumatic equipment connecting table (31) are connected by bolts.

6. The automatic core-pulling device for interface tube core in sleeve processing according to claim 5, characterized in that: The sleeve fixing mechanism (4) includes an interface core tube (41), which is connected to the air outlet tube (36), and an inflatable air bladder (43) is sleeved on the outer surface of the interface core tube (41).

7. The automatic core-pulling device for interface tube core in sleeve processing according to claim 6, characterized in that: The outer surface of the vent pipe (36) is provided with threads, and the end of the interface core tube (41) is provided with a threaded connector (42), which is threadedly connected to the vent pipe (36).

8. The automatic core-pulling device for interface tube core in sleeve processing according to claim 6, characterized in that: The interior of the inflatable airbag (43) is connected to the interior of the interface core tube (41), and the outer surface of the inflatable airbag (43) is provided with a number of equally spaced annular protruding airbags.

9. The automatic core-pulling device for interface tube cores in sleeve processing according to claim 7, characterized in that: The outer surface of the interface core tube (41) is provided with several through grooves at equal intervals. The inner wall of the inflatable airbag (43) passes through the through grooves and extends into the interior of the interface core tube (41) and is fixedly connected to the inner wall of the interface core tube (41).

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