CN116493483A - Safety belt pretensioner pipe production equipment - Google Patents
Safety belt pretensioner pipe production equipment Download PDFInfo
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- CN116493483A CN116493483A CN202310780348.6A CN202310780348A CN116493483A CN 116493483 A CN116493483 A CN 116493483A CN 202310780348 A CN202310780348 A CN 202310780348A CN 116493483 A CN116493483 A CN 116493483A
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- cavity
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- pretensioner
- pipe
- clamping block
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 26
- 230000007246 mechanism Effects 0.000 claims abstract description 22
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 210000000078 claw Anatomy 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 10
- 238000004080 punching Methods 0.000 description 10
- 230000000903 blocking effect Effects 0.000 description 8
- 230000009471 action Effects 0.000 description 6
- 238000003825 pressing Methods 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 206010061363 Skeletal injury Diseases 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
- B21D31/04—Expanding other than provided for in groups B21D1/00 - B21D28/00, e.g. for making expanded metal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/003—Positioning devices
Abstract
The application discloses safety belt pretensioner pipe production facility belongs to pretensioner pipe production technical field. Mainly comprises a supporting part; the reaming mechanism is arranged on the supporting part and is provided with an inner supporting component for supporting an inner hole of the pretensioner pipe, the inner supporting component comprises an inner shell, a first cavity is arranged in the inner shell, and a first through groove penetrating through the first cavity is formed in the inner shell; the piston is arranged in the first cavity in a sliding manner, and second saw teeth are formed on the piston; the outer shell is sleeved on the outer ring of the inner shell, and the outer shell is provided with first saw teeth; a first spring mounted between the inner housing and the outer housing. The utility model provides a safety belt pretensioner pipe production facility through being provided with interior support subassembly, can support its inside when pretensioner pipe expands the pipe to can support with the outside and cooperate, carry out stable centre gripping to pretensioner pipe, prevent the deformation of pretensioner pipe simultaneously.
Description
Technical Field
The application relates to the technical field of pretensioner tube production, in particular to safety belt pretensioner tube production equipment.
Background
The safety belt pretensioner is a necessary safety device for a vehicle, can protect the personnel in the largest range when the vehicle collides, and has the main functions of pressing the personnel on a seat without hesitation at the first moment of accident and then moderately loosening the safety belt when the peak impact force is over or the personnel is protected by an air bag, so that rib injury caused by excessive tension is avoided;
the whole working process of the pretensioner is as follows: the detector collects collision information, then releases electric pulse, the electric pulse is transmitted to the gas generator to detonate gas explosion, the generated gas rapidly expands in the pretensioner tube, so that larger air pressure is generated, and the locking device is driven to realize the pretensioning function of the safety belt;
in the whole working process of the pretensioner, the pretensioner pipe plays a core role of containing, guiding out and transmitting high-pressure gas, so that the quality of the pretensioner pipe is directly related to the normal and stable working of the pretensioner, and the quality requirement of the pretensioner pipe is very high in the production of the pretensioner pipe;
for example, the invention patent with publication number of CN 105328417B specifically discloses a production process of a safety belt pretensioner pipe, and the pipe orifice of the pretensioner pipe is reamed with high precision, so that the connection stability of the pretensioner pipe and other parts of the pretensioner is ensured;
however, the wall of the pretensioner pipe is thin, in order to ensure the consistency of the reaming dimensions during the reaming operation of the pretensioner pipe, the pretensioner pipe needs to be prevented from being deformed, and the existing operation mode of clamping the outer ring easily causes the pretensioner pipe to be clamped and deformed, thereby affecting the pipe expanding precision of the pretensioner pipe, so that it is necessary to provide a production device for the seat belt pretensioner pipe to solve the above-mentioned problems.
It should be noted that the above information disclosed in this background section is only for understanding the background of the present application concept and, therefore, it may contain information that does not constitute prior art.
Disclosure of Invention
Based on the above problems existing in the prior art, the problems to be solved by the present application are: the production equipment for the safety belt pretensioner pipe solves the problem that the pretensioner pipe is easy to deform in the pipe expanding process.
The technical scheme adopted for solving the technical problems is as follows: a seat belt pretensioner tube production apparatus includes a support portion; a reaming mechanism mounted on the support, the reaming mechanism having an internal bracing assembly supporting the internal bore of the pretensioner tube, the internal bracing assembly comprising; the inner shell is internally provided with a first cavity, and a first through groove penetrating through the first cavity is formed in the inner shell; the piston is arranged in the first cavity in a sliding manner, and second saw teeth are formed on the piston; the outer shell is sleeved on the outer ring of the inner shell, and the outer shell is provided with first saw teeth; a first spring mounted between the inner housing and the outer housing; the piston is suitable for sliding in the first chamber so as to drive the outer shell to be close to or far away from the inner shell through the matching of the first saw tooth and the second saw tooth, and the inner hole of the pretensioner tube is supported when the outer shell is far away from the inner shell.
Further, the reaming mechanism further comprises a second cylinder, and a push rod is arranged at the output end of the second cylinder; the inside of push rod is provided with the air cavity, the air cavity with first cavity intercommunication, the air cavity communicates with outside air supply.
Further, a first pressure sensor is arranged on the shell.
Further, an inner sleeve is arranged in the air cavity in a sealing sliding manner, and the inner sleeve and the inner shell are fixedly installed; the inside of the inner sleeve is provided with a second cavity, and the second cavity is communicated with the air cavity and the first cavity; the inner sleeve is provided with an air hole, the air hole is positioned close to the inner shell, an air groove is formed in the inner wall of the air cavity, and the air cavity is communicated with an external air source through the air groove.
Further, a second through chute and a first through chute are arranged on the push rod, the width of the second through chute is larger than that of the first through chute, and the second through chute and the first through chute are communicated with each other; the first sliding groove is internally provided with a stop lever in a sliding manner, the stop lever is positioned in the second cavity, and a second spring is arranged between the stop lever and the air cavity.
Further, a first screw is connected to the stop lever in a threaded manner, and the first screw is matched with the first chute; the upper end of the first screw rod is provided with a first clamping block, the first clamping block is provided with a contact claw, one end of the contact claw is provided with a contact part, and the contact claw is hinged with a deflector rod.
Further, a second screw rod is arranged on the second sliding groove in a sliding manner, and the second screw rod is fixedly arranged with the inner sleeve; the first clamping block is provided with a groove, the upper end of the second screw rod is provided with a second clamping block, the second clamping block is provided with a boss, and the boss is matched with the groove.
Further, an electromagnet is arranged at the contact position of the first clamping block and the second clamping block.
Further, a second pressure sensor is provided on the contact portion.
The beneficial effects of this application are: the application provides a safety belt pretensioner pipe production facility through being provided with interior support subassembly, can support its inside when pretensioner pipe expands the pipe to can support with the outside and cooperate, carry out stable centre gripping to pretensioner pipe, prevent the deformation of pretensioner pipe simultaneously.
In addition to the objects, features, and advantages described above, there are other objects, features, and advantages of the present application. The present application will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:
FIG. 1 is an overall schematic view of a seat belt pretensioner tube production apparatus of the present application;
FIG. 2 is a schematic view of the partial structure at A in FIG. 1;
FIG. 3 is a schematic view of the overall structure of the reaming mechanism of FIG. 1;
FIG. 4 is a schematic view of the partial structure at B in FIG. 3;
FIG. 5 is a schematic view of the detail of the inner support assembly of FIG. 3;
FIG. 6 is a schematic view of the internal explosive structure of the housing position of FIG. 4;
FIG. 7 is a schematic view of the internal explosion configuration of the putter in FIG. 4;
FIG. 8 is a schematic view of the partial structure at C in FIG. 7;
FIG. 9 is a schematic view of the partial structure of the portion D in FIG. 7;
FIG. 10 is a schematic view of the partial structure at E in FIG. 7;
wherein, each reference sign in the figure:
1. a support part;
2. a feeding mechanism;
3. a reaming mechanism; 31. a base; 32. a punching assembly; 321. a hydraulic cylinder; 322. a punching part; 34. a platform; 35. a first cylinder; 36. a clamping part;
4. a discharging mechanism;
5. a pretensioner tube;
6. an inner support assembly; 61. a tailstock; 610. a stop lever; 611. a first clamping block; 612. a groove; 613. a first screw; 62. a second cylinder; 621. a push rod; 622. a first chute; 623. a second chute; 624. an air tank; 625. an air tap; 626. a second spring; 627. an air cavity; 63. a housing; 631. a mating block; 632. a first serration; 633. a first spring; 64. a contact claw; 641. a contact portion; 65. an inner case; 651. a first internal thread; 652. a first through groove; 66. a piston; 661. a second serration; 67. a connecting end; 671. a first external thread; 672. a second external thread; 68. a deflector rod; 69. an inner sleeve; 691. air holes; 692. a second internal thread; 693. a second clamping block; 694. a boss; 695. and a second screw.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.
First, this embodiment describes how, when the pretensioner pipe 5 is subjected to a pipe expanding operation, the pretensioner pipe 5 is fixed by a combination of internal stay and external clamping, so as to prevent deformation of the pretensioner pipe 5 during the pipe expanding operation, specifically:
as shown in fig. 1, the present embodiment provides a safety belt pretensioner pipe production apparatus, comprising a support portion 1 and a reaming mechanism 3 provided on the support portion 1, the reaming mechanism 3 being used for reaming a pretensioner pipe 5, while a feeding mechanism 2 is provided on one side of the reaming mechanism 3, and a discharging mechanism 4 is provided on the other side of the reaming mechanism 3, and a mechanical clamping jaw (not shown) is further provided on the support portion 1, so that the pretensioner pipe 5 located in the feeding mechanism 2 is grabbed onto the reaming mechanism 3 by the mechanical clamping jaw to perform reaming operation, and after reaming is completed, the pretensioner pipe 5 is grabbed into the discharging mechanism 4 by the mechanical clamping jaw, so as to realize mass industrialized production;
the whole process of the reaming operation of the pretensioner pipe 5 is described above, and the following details of the clamping manner in the reaming process are described below, specifically:
as shown in fig. 3, the reaming mechanism 3 includes a base 31 fixedly mounted on the support part 1, and a punching assembly 32 is provided at one end of the base 31, the punching assembly 32 being used for punching the pretensioner pipe 5;
the punching assembly 32 comprises a hydraulic cylinder 321 fixedly arranged on the base 31, the output end of the hydraulic cylinder 321 is horizontally arranged, a punching part 322 is fixedly arranged at the output end of the hydraulic cylinder 321, and the punching part 322 can move along the length direction of the pretensioner pipe 5 under the driving of the hydraulic cylinder 321 and extend into the hole of the pretensioner pipe 5 to perform reaming operation;
as shown in fig. 2 to 3, a platform 34 is fixedly installed at the middle position of the base 31, an external clamping assembly is arranged on the platform 34, the external clamping assembly comprises a first air cylinder 35 fixedly installed on the platform 34 and positioned at two sides of the pretensioner pipe 5, a clamping part 36 is fixedly installed at the output end of the first air cylinder 35, the clamping parts 36 are provided with circular arcs used for clamping on opposite surfaces, so that the two clamping parts 36 are mutually close to each other to clamp the outer circle of the pretensioner pipe 5 and are mutually far away from each other to facilitate the placement or the taking out of the pretensioner pipe 5 under the driving of the first air cylinder 35;
the above is a description of the external clamping manner during the reaming operation of the pretensioner pipe 5, but in the actual reaming, the external clamping alone may cause the pretensioner pipe 5 to deform, so the internal bracing assembly 6 is added to prevent the pretensioner pipe 5 from deforming during the reaming operation, specifically:
as shown in fig. 3, the inner support assembly 6 includes a tailstock 61 fixedly installed on the base 31 and far from one side of the punching assembly 32, a second cylinder 62 is fixedly installed on the tailstock 61, an output end of the second cylinder 62 is also arranged in a horizontal direction, and a push rod 621 is fixedly installed on an output end of the second cylinder 62, so that the push rod 621 can move along a length direction of the pretensioner pipe 5 under the driving of the second cylinder 62;
as shown in fig. 5, an inner support unit is installed at an end of the push rod 621 away from the tailstock 61, and can move to the inside of the pretensioner pipe 5 following the push rod 621 and support the inner wall of the pretensioner pipe 5;
as shown in fig. 6, the inner stay unit includes a connection end 67 fitted with the push rod 621, the connection end 67 being provided with an inner case 65 at an end remote from the push rod 621, while being provided with a first female screw 651 at an end of the inner case 65 near the connection end 67, and a second male screw 672 at an end of the connection end 67 near the inner case 65, the connection end 67 being fastened with the inner case 65 by the fitting of the first female screw 651 and the second male screw 672;
and after the connecting head 67 and the inner case 65 are mounted, a first chamber (not shown) is formed inside the connecting head and the inner case, and a piston 66 is slidably mounted in the first chamber, so that the piston 66 can reciprocate in the first chamber along the length direction of the pretensioner pipe 5;
with continued reference to fig. 6, the outer race of the inner shell 65 is sleeved with the outer shell 63, while a first spring 633 is mounted between the inner shell 65 and the outer shell 63, the first spring 633 having an inward contractive force such that the outer shell 63 can be drawn toward the inner shell 65 by the first spring 633;
meanwhile, a matching block 631 is fixedly installed on the inner wall of the outer shell 63, a first through groove 652 corresponding to the matching block 631 is formed on the inner shell 65, and under the action of the first spring 633, the matching block 631 can pass through the first through groove 652 and enter the first chamber;
in this embodiment, a first saw tooth 632 is provided at a position where the mating block 631 enters the first chamber, and a second saw tooth 661 corresponding to the first saw tooth 632 is provided on the piston 66, the second saw tooth 661 is in a frustum shape, and the second saw tooth 661 can slide in the first chamber to change a contact position between the second saw tooth 661 and the first saw tooth 632, thereby changing a relative position between the outer shell 63 and the inner shell 65, specifically:
for convenience of explanation, the lowest point of the sawtooth profile is defined as the tooth bottom, while the highest point of the sawtooth profile is defined as the tooth top, and a conical inclined plane of the frustum is arranged between the tooth bottom and the tooth top; specifically, the first serration 632 is in contact engagement with the outer wall surface of the second serration 661, and the first serration 632 is in the radial direction of the second serration 661.
In the initial state, the piston 66 is located in the first chamber at a position close to the connecting end 67, and at this time, the tooth bottom position of the second serration 661 is in contact with the tooth top position of the first serration 632, and in this state, the second serration 661 and the first serration 632 are located at positions that are mutually attached, so that the outer case 63 is located at a position close to the inner case 65, which can be defined as the first position of the outer case 63;
when the piston 66 moves in the first chamber in a direction away from the connecting end 67 for a certain distance, the tooth top position of the first saw tooth 632 and the tooth bottom position of the second saw tooth 661 are offset from each other, and the tooth top position of the first saw tooth 632 falls on the tooth-shaped inclined surface of the second saw tooth 661 and gradually approaches to the tooth top of the second saw tooth 661, in the process, the outer shell 63 is gradually driven away from the inner shell 65 until the tooth top of the first saw tooth 632 and the tooth top of the second saw tooth 661 contact, and the maximum value of the distance between the outer shell 63 and the inner shell 65 is reached, and the position where the distance between the outer shell 63 and the inner shell 65 reaches the maximum value can be defined as the second position of the outer shell 63;
in summary, during the sliding process of the piston 66, the housing 63 may be located between the first position and the second position, and after the piston 66 is reset, the housing 63 returns to the first position under the action of the first spring 633;
in this embodiment, the matching block 631 is located at the central axis of the casing 63, and the second saw tooth 661 can only reciprocate between the tooth top and the tooth bottom of the first saw tooth 632 under the drive of the piston 66;
in order to enable the piston to slide, as shown in fig. 7, an air cavity 627 is arranged inside the push rod 621, the air cavity 627 is communicated with the first cavity, meanwhile, an air tap 625 is communicated with the air cavity 627, the air tap 625 is connected with an external air source, so that air is filled into the air cavity 627 through the external air source, and meanwhile, the filled air enters the first cavity to push the piston 66 to slide in the first cavity;
in summary, when the pretensioner pipe 5 needs to be internally supported, the second cylinder 62 controls the output end to extend, so as to drive the push rod 621 to move towards the pretensioner pipe 5, and further drive the internal supporting unit to enter the pretensioner pipe 5;
then, air is introduced into the air cavity 627 through the air tap 625, and after entering the first cavity, the air pushes the piston 66 to move away from the connecting end 67, so that the outer shell 63 is driven to move away from the inner shell 65 through the interaction of the first saw teeth 632 and the second saw teeth 661 until the inner wall of the outer shell 63 contacts the inner wall of the pretensioner pipe 5, thereby forming internal support for the pretensioner pipe 5;
in order to judge the distance of the outer shell 63 moving outwards, a first pressure sensor may be arranged on the outer shell 63, when the pressure of the outer shell 63 and the inner wall of the pretensioner pipe 5 reaches a certain value through detection of the first pressure sensor, the inner bracing state is judged, at the moment, the inflation into the air cavity 627 is stopped, and the pressure is maintained, so that the position of the outer shell 63 is kept motionless, and the effect of stably supporting the inner wall of the pretensioner pipe 5 is achieved;
when the reaming is completed, the housing 63 is reset by discharging the air in the air chamber 627 and resetting the piston 66, and in this embodiment, the air outlet is provided in the air chamber 627 and the housing 63 is driven to be reset by the first spring 633.
In the second embodiment, although the inner and outer support is realized when the pretensioner pipe 5 is reamed, in the case of the inner support, the difference between the position of the inner support and the distance between the reamed part may have different effects on the quality of the reamed hole, if the position of the inner support is far away from the reamed part, the deformation may be larger when the pretensioner pipe 5 is reamed, and when the position of the inner support is near to the reamed part, the action of the punching part 322 may be affected, so in the actual reamed hole, the proper inner support position is generally set according to various parameters of the pretensioner pipe 5, thereby further enhancing the quality of the reamed hole of the pretensioner pipe 5;
the present embodiment illustrates the structure and principle of how the inner strut position reaches the preset position, specifically:
as shown in fig. 7 and 9, an inner sleeve 69 is provided in the air chamber 627 in a sealing sliding manner, a second chamber is provided inside the inner sleeve 69, the second chamber is communicated with the air chamber 627, one end of the inner sleeve 69 extends out of the air chamber 627 and forms an extending end, and a second internal thread 692 is provided inside the extending end;
as shown in fig. 6, a first external thread 671 is provided at an end of the connection terminal 67 remote from the inner case 65, the first external thread 671 being matched with a second internal thread 692, such that the connection terminal 67 is fixedly mounted on the inner case 69 by the first external thread 671 and the second internal thread 692, and the first chamber and the second chamber communicate with each other after the connection terminal 67 is mounted with the inner case 69;
as shown in fig. 7 and 9, the inner sleeve 69 is provided with an air hole 691, the air hole 691 is located near the second internal thread 692, meanwhile, an air groove 624 is formed on the inner wall of the air cavity 627, the air cavity 627 is communicated with the air tap 625 through the air groove 624, so that the air can be guided into the first cavity through the second cavity by the air hole 691 and the air cavity 627, and the function of internal support in the first embodiment is realized, which is not described herein;
as shown in fig. 5, a second slide groove 623 and a first slide groove 622 are provided on the push rod 621 so as to penetrate in a direction away from the housing 63, and the width of the second slide groove 623 is larger than that of the first slide groove 622, while the second slide groove 623 and the first slide groove 622 communicate with each other;
as shown in fig. 7 to 10, a blocking rod 610 is slidably disposed in the first sliding groove 622, the blocking rod 610 is located in the second cavity of the inner sleeve 69, and a second spring 626 is installed between the blocking rod 610 and the air cavity 627, so that the blocking rod 610 can slide in the inner sleeve 69 and exert force on the second spring 626, and meanwhile, the blocking rod 610 can slide at different positions along the length direction of the inner sleeve 69 for releasing or blocking the air hole 691, and the specific structure of the sliding arrangement of the blocking rod 610 is as follows:
the stop lever 610 is connected with a first screw 613 in a threaded manner, the first screw 613 is matched with the first chute 622, namely, the first screw 613 can slide in the first chute 622 so as to drive the stop lever 610 to slide in the second cavity, and when the stop lever 610 is installed, the stop lever 610 is placed in the second cavity and then passes through the first chute 622 through the first screw 613 so as to connect the stop lever 610;
at the same time, a first clamping block 611 is fixedly mounted at the upper end of the first screw 613, a contact claw 64 is fixedly mounted on the first clamping block 611, and the contact claw 64 passes through a gap between the outer shell 63 and the inner shell 65 and is positioned outside the push rod 621;
and a second screw 695 is slidably provided on the second slide groove 623, the second screw 695 being fixedly mounted with the inner housing 69 such that the inner housing 69 can slide within the air chamber 627 when the second screw 695 slides within the second slide groove 623;
as shown in fig. 10, a groove 612 is formed on the first clamping block 611, meanwhile, a second clamping block 693 is fixedly arranged at the upper end of the second screw rod 695, a boss 694 is arranged on the second clamping block 693, the boss 694 is matched with the groove 612, and when the first clamping block 611 and the second clamping block 693 are close to each other, the boss 694 and the groove 612 are mutually clamped;
in the present embodiment, an electromagnet (not shown) is provided at a position where the first and second clamping blocks 611 and 693 are in contact, and when the electromagnet is energized, the first and second clamping blocks 611 and 693 can be combined with each other and moved together;
as shown in fig. 8, a contact portion 641 is provided at an end of the contact claw 64 away from the second screw 695, the contact portion 641 is for contacting with the pressing portion 322, a deflector rod 68 is hinged to the contact claw 64, the upper end head portion of the deflector rod 68 can swing along the length direction of the contact claw 64, and the deflector rod 68 has two limit states when swinging, the first state is that the head portion of the deflector rod 68 points to the contact portion 641, and the second state is that the head portion of the deflector rod 68 points to the direction of the second screw 695;
it will be appreciated that the lever 68 is a torsion switch (or rocker switch) and forms a series circuit with the electromagnet, while when the lever 68 is in the first state, the lever 68 is separated from the contacts (not shown) so that the series circuit is broken to place the electromagnet in a powered-off state, and when the lever 68 is in the second state, the lever 68 is in contact with the contacts so that the series circuit is on to place the electromagnet in a powered-on state, and in the initial state, the lever 68 is in the first state so that the electromagnet is powered, so that the first and second latches 611 and 693 are attracted to each other and bound together;
in summary, since the width of the second chute 623 is greater than the width of the first chute 622, the first clamping block 611 can enter the position of the second chute 623 under the driving of the first screw 613, and the second clamping block 693 cannot enter the position of the first chute 622, so in the initial state, both the first clamping block 611 and the second clamping block 693 can be set to be located at the end of the second chute 623 away from the first chute 622, i.e. in the initial state, the first clamping block 611 and the second clamping block 693 are mutually attached;
when the pretensioner pipe 5 is reamed, firstly the output end of the second cylinder 62 starts to stretch and drives the push rod 621 to move towards the pretensioner pipe 5, during the movement of the push rod 621, the second spring 626 drives the stop rod 610 to slide towards the pretensioner pipe 5 and drives the inner sleeve 69 and the inner support unit to move together under the action of the first clamping block 611 and the second clamping block 693, and in the initial state, the stop rod 610 is positioned in the inner sleeve 69 at a position close to the second internal thread 692, so that in the initial state, the stop rod 610 stops the air hole 691, and the inner support unit is still in the initial state;
as the output end of the second cylinder 62 continues to extend, the shift lever 68 enters the inside of the pretensioner pipe 5, because the upper end of the shift lever 68 protrudes out of the pretensioner pipe 5 no matter what state the shift lever 68 is in at this time, when the shift lever 68 enters the inside of the pretensioner pipe 5, the shift lever 68 is shifted by the inner wall of the pretensioner pipe 5, so that the shift lever 68 is in the second state;
when the deflector rod is in the second state, the first clamping block 611 and the second clamping block 693 are mutually attracted and combined together, so that the push rod 621 drives the stop rod 610, the inner sleeve 69 and the inner supporting unit to move together in the process of continuously extending the output end of the second cylinder 62;
as the output end of the second cylinder 62 continues to extend, the lever 68 is pulled out from the inside of the pretensioner pipe 5, and at this time, the lever 68 is still in the second state until the contact claw 64 fixedly mounted with the stop lever 610 contacts the end surface of the pressing portion 322, that is, the contact portion 641 abuts against the pressing portion 322, and at this time, the second cylinder 62 stops extending;
in the present embodiment, a second pressure sensor may be provided on the contact portion 641, and pressure data is collected by the second pressure sensor to control the second cylinder 62 to stop extension;
when the second cylinder 62 stops extending, the pressing portion 322 starts moving toward the pretensioner pipe 5 and prepares for the hole-enlarging operation of the pretensioner pipe 5;
because the shifter lever 68 is still in the second state, the first clamping block 611 and the second clamping block 693 are still attracted together, and the contact claw 64 is pushed to retract along with the movement of the stamping part 322, the retraction of the contact claw 64 drives the stop lever 610, the inner sleeve 69 and the inner supporting unit to move together until the shifter lever 68 is contacted with the pretensioner pipe 5 again, and at the moment, the upper end of the shifter lever 68 protrudes out of the pretensioner pipe 5, so that when the shifter lever 68 enters the inside of the pretensioner pipe 5, the shifter lever 68 is shifted by the inner wall of the pretensioner pipe 5, and thus the shifter lever 68 is in the first state;
when the deflector rod 68 is in the first state, the electromagnet is in a power-off state, the first clamping block 611 and the second clamping block 693 are separated from each other, at this time, along with the continuous movement of the stamping part 322, the retraction of the contact claw 64 only retracts the stop rod 610, and the inner sleeve 69 and the inner support unit are left in the pretensioner tube 5;
in this embodiment, because the inner support unit has stopped moving at the moment of contact with the pretensioner pipe 5 by the lever 68, the distance between the position where the inner support unit stays and the end of the pretensioner pipe 5 where the hole is reamed is fixed, and the fixed distance can be set to the proper inner support position of the pretensioner pipe 5, thereby ensuring that the relative position where the inner support unit acts remains fixed to improve the quality of the hole-reamed pretensioner pipe 5;
when the stop lever 610 is retracted and the inner sleeve 69 is kept stationary, the stop lever 610 moves in the inner sleeve 69 along the direction away from the pretensioner pipe 5, and the blocking of the air hole 691 is released along with the movement of the stop lever 610, so that an external air source enters the first chamber from the air hole 691, and the inner supporting unit is driven to support the pretensioner pipe 5, and the structure of the portion is described in detail in the embodiment and is not repeated;
the punch 322 then punches and retracts the pretensioner tube 5, and during the retraction of the punch 322, the stop lever 610 is reset under the action of the second spring 626, so that the contact claw 64 is reset, and the lever 68 is again disengaged and still in the first state;
then the support of the inner support unit to the pretensioner pipe 5 is released, the push rod 621 is driven to reset through the second air cylinder 62, the stop lever 610 is driven to reset through the second spring 626 in the resetting process of the push rod 621, the inner sleeve 69 and the inner support unit are driven to reset through the second sliding groove 623, and in the resetting process, the deflector rod 68 is always in the first state under the action of the pretensioner pipe 5 until the inner support unit is completely reset, so that the next inner support operation is facilitated.
In the above embodiments, the PLC control system is configured to drive the cooperative operation of each electrical component.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (9)
1. The utility model provides a safety belt pretensioner pipe production facility, is applied to pretensioner pipe's reaming operation, its characterized in that: the seat belt pretensioner tube production apparatus includes:
a support (1);
a reaming mechanism (3), the reaming mechanism (3) being mounted on the support (1), the reaming mechanism (3) having an internal bracing assembly (6) supporting an internal bore of the pretensioner tube, the internal bracing assembly (6) comprising;
the inner shell (65), the inside of the inner shell (65) is provided with a first cavity, and the inner shell (65) is provided with a first through groove (652) penetrating through the first cavity;
a piston (66), wherein the piston (66) is arranged in the first cavity in a sliding way, and a second saw tooth (661) is arranged on the piston (66);
an outer shell (63), wherein the outer shell (63) is sleeved on the outer ring of the inner shell (65), and a first saw tooth (632) is arranged on the outer shell (63);
a first spring (633), the first spring (633) being mounted between the inner housing (65) and the outer housing (63);
wherein: the piston (66) is adapted to slide in the first chamber to drive the outer housing (63) toward or away from the inner housing (65) by the cooperation of the first and second serrations (632, 661) and to support the pretensioner tube bore when the outer housing (63) is away from the inner housing (65).
2. A seat belt pretensioner tube production apparatus according to claim 1, characterized in that: the reaming mechanism (3) further comprises a second air cylinder (62), and a push rod (621) is arranged at the output end of the second air cylinder (62);
an air cavity (627) is formed in the push rod (621), the air cavity (627) is communicated with the first cavity, and the air cavity (627) is communicated with an external air source.
3. A seat belt pretensioner tube production apparatus according to claim 2, characterized in that: a first pressure sensor is provided on the housing (63).
4. A seat belt pretensioner tube production apparatus according to claim 2, characterized in that: an inner sleeve (69) is arranged in the air cavity (627) in a sealing sliding manner, and the inner sleeve (69) is fixedly arranged with the inner shell (65);
a second chamber is arranged in the inner sleeve (69), and the second chamber is communicated with the air cavity (627) and the first chamber;
the inner sleeve (69) is provided with an air hole (691), the air hole (691) is positioned close to the inner shell (65), an air groove (624) is formed in the inner wall of the air cavity (627), and the air cavity (627) is communicated with an external air source through the air groove (624).
5. A seat belt pretensioner tube production apparatus according to claim 4, characterized in that: the push rod (621) is provided with a second through chute (623) and a first through chute (622), the width of the second through chute (623) is larger than that of the first through chute (622), and the second through chute (623) and the first through chute (622) are communicated with each other;
a stop lever (610) is slidably arranged in the first sliding groove (622), the stop lever (610) is located in the second cavity, and a second spring (626) is installed between the stop lever (610) and the air cavity (627).
6. A seat belt pretensioner tube production apparatus according to claim 5, characterized in that: a first screw rod (613) is connected to the stop lever (610) in a threaded mode, and the first screw rod (613) is matched with the first chute (622);
the upper end of the first screw (613) is provided with a first clamping block (611), the first clamping block (611) is provided with a contact claw (64), one end of the contact claw (64) is provided with a contact part (641), and the contact claw (64) is hinged with a deflector rod (68).
7. A seat belt pretensioner tube production apparatus according to claim 6, wherein: a second screw rod (695) is arranged on the second sliding groove (623) in a sliding manner, and the second screw rod (695) is fixedly arranged with the inner sleeve (69);
the first clamping block (611) is provided with a groove (612), the upper end of the second screw rod (695) is provided with a second clamping block (693), the second clamping block (693) is provided with a boss (694), and the boss (694) is matched with the groove (612).
8. A seat belt pretensioner tube production apparatus according to claim 7, wherein: an electromagnet is arranged at the contact position of the first clamping block (611) and the second clamping block (693).
9. A seat belt pretensioner tube production apparatus according to claim 8, wherein: the contact part (641) is provided with a second pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310780348.6A CN116493483B (en) | 2023-06-29 | 2023-06-29 | Safety belt pretensioner pipe production equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310780348.6A CN116493483B (en) | 2023-06-29 | 2023-06-29 | Safety belt pretensioner pipe production equipment |
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| CN116493483A true CN116493483A (en) | 2023-07-28 |
| CN116493483B CN116493483B (en) | 2023-09-15 |
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| CN202310780348.6A Active CN116493483B (en) | 2023-06-29 | 2023-06-29 | Safety belt pretensioner pipe production equipment |
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| Publication number | Publication date |
|---|---|
| CN116493483B (en) | 2023-09-15 |
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