CN218937611U

CN218937611U - Tension detection equipment for reset spring of safety belt retractor

Info

Publication number: CN218937611U
Application number: CN202223415192.1U
Authority: CN
Inventors: 林慧; 胡炯恒
Original assignee: Sanhangda Electromechanical Technology Suzhou Co ltd
Current assignee: Sanhangda Electromechanical Technology Suzhou Co ltd
Priority date: 2022-12-20
Filing date: 2022-12-20
Publication date: 2023-04-28
Anticipated expiration: 2032-12-20

Abstract

The application relates to a tensile force check out test set for safety belt retractor reset spring, through rotary platform and material loading station, equipment station, detection station and unloading station cooperation in order to realize the automatic machine check to reset spring, improved reset spring's detection efficiency, rethread mounting bracket, sliding element, elastic component and force transducer cooperation detect reset spring's tensile force, effectively reduced the impact force that force transducer received, prolonged force transducer's life.

Description

Tension detection equipment for reset spring of safety belt retractor

Technical Field

The utility model relates to a tensile force detection device for a reset spring of a safety belt retractor, belonging to the technical field of spring force detection auxiliary devices.

Background

The retractor is used as a core component of an automobile safety belt, the reliability of the retractor is about whether personal safety of a driver can be guaranteed, the reset spring is connected to the locking claw and the retractor cover body and is used as an important ring of a retractor locking mechanism, in the existing production, the locking claw and the reset spring are required to be manually installed, and after the locking claw and the reset spring are installed on the retractor, the reset spring is subjected to tensile force detection to ensure that the tensile force of the reset spring meets the use safety requirement range, the conventional detection is that the locking claw is pushed by the cylinder driving force sensor so that the reset spring stretches to detect the tensile force of the reset spring, the detection process usually needs to damage the force sensor due to the impact force, the service life of the force sensor is short, the production cost is increased, and in addition, the tensile force efficiency of the manual detection of the reset spring is low, and time and labor are wasted.

Disclosure of Invention

The utility model aims to provide a tensile force detection device for a seat belt retractor reset spring, which can realize automatic detection, reduce the impact force received during detection of a force sensor, prolong the service life of the force sensor and improve the working efficiency.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a tension detecting apparatus for a seatbelt retractor return spring, the retractor being rotatably connected with a locking claw, one end of the return spring being connected to the retractor, the other end being connected to the locking claw, the locking claw being rotated to extend or retract the return spring, the detecting apparatus comprising:

a frame body;

the rotating platform is arranged on the frame body and driven by the driving piece to rotate, and a product jig for clamping the retractor is arranged on the rotating platform; a kind of electronic device with high-pressure air-conditioning system

The operation area is arranged on the frame body and is positioned above the rotary platform, the operation area comprises a feeding station, an assembling station, a detecting station and a discharging station which are arranged along the periphery of the rotary platform, and the rotary platform rotates to enable the product jig to be switched among the feeding station, the assembling station, the detecting station and the discharging station;

the detection station comprises a detection device, wherein the detection device comprises a support arranged on a frame body, a sliding component arranged on the support and a detection mechanism arranged on the sliding component, the sliding component is arranged along the height direction of the support, and the detection mechanism is driven to move along the height direction of the support under the action of a power source;

the detection mechanism comprises a mounting frame, a sliding unit arranged on the mounting frame and a force sensor arranged on the sliding unit, wherein the mounting frame comprises a bottom plate, a long arm part and a short arm part which are oppositely arranged from two sides of the bottom plate, a mounting groove is formed by surrounding the bottom plate, the long arm part and the short arm part, the sliding unit is accommodated in the mounting groove, the mounting frame moves along a first direction under the action of a power piece, and the first direction is perpendicular to the sliding direction of the sliding component;

one end of the force sensor is elastically connected with the long arm part through an elastic piece, the other end of the force sensor is provided with a pushing piece for pushing the locking claw, at least part of orthographic projection of the force sensor falls into the mounting groove, and the elastic piece is always in a compressed state to enable the sliding unit to be propped against the short arm part.

Further, the elastic piece comprises a push rod arranged on the long arm part and a spring partially sleeved outside the push rod, and two ends of the spring are respectively connected to the long arm part and the force sensor.

Further, the detection station further comprises a pressing device, the pressing device comprises a first air cylinder arranged above the retractor and a pressing plate arranged on the first air cylinder, and the pressing plate is pressed on the retractor under the driving of the first air cylinder.

Further, the product jig includes:

the fixed groove is arranged on the rotary platform and is used for placing the retractor;

the clamping assembly is arranged on the rotary platform and comprises clamping jaws symmetrically arranged on two sides of the fixed groove and an opening and closing cylinder for driving the clamping jaws, and the opening and closing cylinder is arranged at the bottom of the rotary platform; a kind of electronic device with high-pressure air-conditioning system

And the limiting component is arranged on the rotary platform and is inserted into the retractor to limit the retractor to rotate.

Further, the detection equipment further comprises a driving assembly arranged on the frame body, the driving assembly is provided with two groups, the two groups of driving assemblies are respectively arranged in the feeding station and the discharging station, and the limiting assembly is driven by the driving assembly to be pulled out of the retractor.

Further, the driving assembly comprises a second air cylinder installed on the frame body, a push rod hinged on an output shaft of the second air cylinder, and a connecting rod hinged on a cylinder body of the second air cylinder and the push rod respectively, wherein the second air cylinder is used for driving part of the push rod to enter the upper part of the rotating platform to be movably connected with the limiting assembly, and the limiting assembly is driven to be pulled out of the retractor.

Further, the assembly station is provided with a detection member, the detection member is arranged on the frame body and located right above the retractor, and the detection member is used for detecting a locking claw on the retractor.

Further, the unloading station includes:

the code scanning assembly is arranged on the frame body and used for scanning the product code of the retractor;

the gripper assembly is arranged on the frame body and used for gripping a retractor on the product jig;

the transmission assembly is arranged on the frame body and used for conveying the qualified coiler grabbed by the gripper assembly; a kind of electronic device with high-pressure air-conditioning system

The waste collection box is arranged on the frame body and is used for collecting the unqualified winding device grabbed by the gripper assembly

The force sensor is in signal connection with the gripper assembly, and the gripper assembly places the retractor on the product jig in the transmission assembly or the waste collection box according to the detection result of the force sensor.

Further, the tongs subassembly includes truss and swing joint be in manipulator on the truss, truss one end is close to the product tool sets up, and the other end is close to transmission assembly sets up, the collection mouth of waste collection box sets up product tool with transmission assembly is between.

Further, the manipulator comprises a horizontal sliding mechanism arranged on the truss, a vertical sliding mechanism arranged on the horizontal sliding assembly, a rotary cylinder arranged on the vertical sliding mechanism and a clamping jaw mechanism arranged on an output shaft of the rotary cylinder.

The utility model has the beneficial effects that: this application is through rotary platform and material loading station, equipment station, detection station and unloading station cooperation in order to realize the automatic machine inspection to reset spring, has improved reset spring's detection efficiency, and rethread mounting bracket, sliding unit, elastic component and force sensor cooperation detect reset spring's tensile force, have effectively reduced the impact force that force sensor received, have prolonged force sensor's life.

The foregoing description is only an overview of the present utility model, and is intended to provide a better understanding of the present utility model, as it is embodied in the following description, with reference to the preferred embodiments of the present utility model and the accompanying drawings.

Drawings

Fig. 1 is a schematic structural view of a tension detecting apparatus for a seatbelt retractor return spring according to a preferred embodiment of the present utility model.

Fig. 2 is a schematic structural diagram of the rotating platform and the working area in fig. 1.

Fig. 3 is a schematic view of an axial structure of the rotating platform and the working area in fig. 1.

Fig. 4 is an enlarged schematic view of the structure of the portion a in fig. 3.

Fig. 5 is a schematic structural diagram of the product fixture in fig. 2.

Fig. 6 is a schematic diagram of an axial structure of the detection mechanism in fig. 2.

Fig. 7 is a schematic structural diagram of the detection mechanism in fig. 2.

Fig. 8 is a schematic view of the gripper assembly of fig. 2.

Detailed Description

The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.

Referring to fig. 1 to 3, in a tension detecting apparatus for a return spring 101 of a seatbelt retractor 10 according to a preferred embodiment of the present utility model, a locking claw 102 is rotatably connected to the retractor 10, one end of the return spring 101 is connected to the retractor 10, the other end is connected to the locking claw 102, the locking claw 102 rotates to extend or retract the return spring 101, and the detecting apparatus includes: the frame body 1, the rotary platform 2 and the working area.

In this embodiment, the rotary platform 2 is mounted on the frame 1, the rotary platform 2 is driven by a driving member (not shown) to rotate, and a product jig 3 for holding the retractor 10 is provided on the rotary platform 2.

In this embodiment, the operation area is disposed on the frame 1 and above the rotary platform 2, and the operation area includes a feeding station 5, an assembling station 6, a detecting station 7 and a discharging station 8 disposed along the periphery of the rotary platform 2, and the rotary platform 2 rotates to switch the product fixture 3 among the feeding station 5, the assembling station 6, the detecting station 7 and the discharging station 8. Specifically, in order to improve the production beat, four groups of product jigs 3 are arranged on the rotary platform 2 in an annular array manner, and a group of product jigs 3 are arranged in each station at the same time.

In this embodiment, in order to control the production tact, the feeding station 5 includes a first sensor 51 disposed on the frame 1, where the first sensor 51 is in signal connection with a driving member, and when the first sensor 51 detects the retractor 10 on the product fixture 3, the driving member drives the rotating platform 2 to rotate so as to drive the retractor 10 to move to the assembling station 6.

Referring to fig. 5 to 7, the detecting station 7 includes a detecting device 71, where the detecting device 71 includes a support 711 installed on the frame 1, a sliding component 712 installed on the support, and a detecting mechanism installed on the sliding component, the sliding component 712 is disposed along a height direction of the support 711, and drives the detecting mechanism to move along the height direction of the support under the action of a power source 718.

In this embodiment, the detection mechanism includes a mounting frame 714, a sliding unit 715 mounted on the mounting frame, and a force sensor 716 mounted on the sliding unit, where the mounting frame includes a bottom plate 7141, and a long arm portion 7142 and a short arm portion 7142 that are disposed opposite from two sides of the bottom plate, the bottom plate 7141, the long arm portion 7142, and the short arm portion 7143 enclose to form a mounting groove, the sliding unit 715 is accommodated in the mounting groove, and the mounting frame moves along a first direction under the action of a power member 713, and the first direction is perpendicular to a sliding direction of the sliding component 712;

in this embodiment, one end of the force sensor 716 is elastically connected to the long arm portion 7142 through an elastic member 717, and the other end is provided with a pushing member 7161 for pushing the locking claw 102, at least part of the orthographic projection of the force sensor 716 falls into the mounting groove, and the elastic member 717 is always in a compressed state to make the sliding unit 715 abut against the short arm portion 7143. Specifically, the support 711 is disposed along the vertical rotation platform 2, the locking claw 102 is provided with a locking pile 1021, and the pushing member pushes the locking pile 1021 to drive the locking claw 102 to rotate, so that the return spring 101 stretches, the sliding unit 715 includes a sliding rail 7151 and a sliding block 7152, and the elastic member 717 is always in a compressed state to enable the sliding block 7152 to abut against the short arm portion 7143.

The detection process comprises the following steps: the driving sliding component 712 of the power source 718 moves down along the support 711 to make the pushing member 7161 and the locking claw 102 at the same height, and the driving member 713 drives the mounting frame 714 to move along the first direction to make the pushing member 7161 push the locking claw 102 so as to extend the return spring 101, so that the spring force of the return spring 101 is detected, and in this process, the elastic member 717 can effectively reduce the impact force received by the force sensor during detection.

In this embodiment, to protect the force sensor 716, the elastic member 717 includes a plunger 7172 mounted on the long arm portion 7141 and a spring 7171 partially sleeved outside the plunger, and both ends of the spring 7171 are connected to the long arm portion 7141 and the force sensor 716, respectively. Specifically, the slider 7152 is held against the short arm portion 7143 in a compressed state at the spring 7171.

Referring to fig. 3, in this embodiment, in order to improve the stability of the retractor 10 during detection, the detection station 7 further includes a pressing device 72, where the pressing device 72 includes a first cylinder 721 disposed above the retractor 10 and a pressing plate 722 mounted on the first cylinder 721, and the pressing plate 722 is pressed against the retractor 10 under the driving of the first cylinder 721. Specifically, a sensor 723 is also provided on the hold down device 72 to ensure that the retractor 10 has the locking pawl 102 mounted thereon, avoiding idle work by the mechanism of the detecting member 61.

Referring to fig. 5, in the present embodiment, in order to fix the retractor 10 so as to install the locking claw 102 and the return spring 101, the product fixture 3 includes: the fixing groove 31, the clamping assembly and the limiting assembly, the fixing groove 31 is arranged on the rotary platform 2 and used for placing the retractor 10. The clamping assembly is mounted on the rotary platform 2 and comprises clamping jaws 33 symmetrically arranged on two sides of the fixed groove 31 and an opening and closing cylinder 34 for driving the clamping jaws 33, and the opening and closing cylinder 34 is arranged at the bottom of the rotary platform 2. A limiting assembly is provided on the rotary platform 2, and the limiting assembly is inserted into the retractor 10 to limit the retractor 10 from rotating. Specifically, the limiting assembly comprises a mounting plate 32 mounted on the rotary platform 2, two guide rods 323 mounted on the mounting plate in a penetrating manner, and a limiting plug 321 and a limiting plate 324 mounted at two ends of the two guide rods, wherein a spring 322 is connected between the limiting plug 321 and the mounting plate 32, and the limiting plug 321 is inserted into the retractor 10 under the action of the spring 322.

Referring to fig. 4, in this embodiment, for convenience in feeding and discharging, the detecting device further includes a driving assembly 9 mounted on the frame 1, the driving assembly 9 is provided with two groups, and is respectively disposed in the feeding station 5 and the discharging station 8, and the limiting assembly is driven by the driving assembly 9 to pull out the retractor 10.

In this embodiment, in order to realize automatic feeding and discharging, the driving assembly 9 includes a second cylinder 91 mounted on the frame 1, a push rod 92 hinged on an output shaft of the second cylinder 91, and a connecting rod 93 respectively hinged on a cylinder body of the second cylinder 91 and the push rod 92, where the second cylinder 91 is movably connected with the limiting assembly above the rotating platform 2 by a part of the driving push rod 92, and the driving limiting assembly is pulled out of the retractor 10. Specifically, the second cylinder 91 stretches to drive the push rod 92, the push rod 92 rotates under the action of the connecting rod 93, one end of the push rod 92 contacts with the limiting plate 324, and drives the limiting plate 324 to move so as to compress the spring 322, thereby driving the limiting plug 321 to be pulled out from the interior of the coiler 10, and facilitating feeding and discharging of the coiler 10.

Referring to fig. 3, in the present embodiment, in order to enhance man-machine interaction, the assembly station 6 is provided with a detecting member 61, the detecting member 61 is disposed on the frame 1 and located right above the retractor 10, and the detecting member 61 is used for detecting the locking claw 102 on the retractor 10. Specifically, the return spring 101 is a C-shaped spring, and the installation of the C-shaped spring 101 and the locking claw 102 is manually assembled by a worker, and whether the installation position of the locking claw 102 is correct or not is detected by the installation detecting member 61

Referring to fig. 2, in this embodiment, in order to facilitate the blanking of the coiler 10 and the tracking of the coiler 10, the blanking station 8 includes: the code scanning component 83, the gripper component 81, the transmission component 82 and the waste collection box 4 are arranged on the frame body 1, and the code scanning component 83 is used for scanning the product code of the coiler 10; the gripper assembly 81 is arranged on the frame body 1 and used for gripping the retractor 10 on the product jig 3; the transmission assembly 83 is mounted on the frame body 1 and is used for conveying the qualified coiler 10 grabbed by the gripper assembly 81; the waste collection box 4 is mounted on the frame 1 for collecting the reject coiler 10 grasped by the gripper assembly 81.

The force sensor 716 is in signal connection with the gripper assembly 81, and the gripper assembly 81 places the retractor 10 on the product fixture 3 in the transmission assembly 82 or the waste collection box 4 according to the detection result of the force sensor 716.

Referring to fig. 8, in this embodiment, in order to collect qualified and unqualified winders 10 respectively, the gripper assembly 82 includes a truss 811 and a manipulator movably connected to the truss, one end of the truss 811 is disposed near the product fixture 3, the other end is disposed near the transmission assembly 82, and the collection port 41 of the waste collection box 4 is disposed between the product fixture 3 and the transmission assembly 82.

In this embodiment, to facilitate blanking of the retractor 10, the robot includes a horizontal sliding mechanism 812 mounted on a truss 811, a vertical sliding mechanism 813 mounted on the horizontal sliding mechanism 812, a rotary cylinder 814 mounted on the vertical sliding mechanism, and a jaw mechanism 815 mounted on an output shaft of the rotary cylinder. Specifically, since the retractor 10 is vertically inserted on the product fixture 3, but the transmission assembly needs to be horizontally placed to stably convey the retractor 10, a rotary cylinder 814 is provided on the manipulator to convert the retractor 10 from vertical to horizontal. The clamping jaw mechanism 815 comprises an opening and closing cylinder and clamping jaws arranged on the opening and closing cylinder. The horizontal sliding component 812 and the vertical sliding mechanism 813 are both composed of a sliding rail and a sliding block, and the sliding block is driven by a power piece to move on the sliding rail so as to realize the movement of the manipulator, however, the movement of the manipulator can also be realized by other forms of moving mechanisms, and the movement of the manipulator is not particularly limited herein.

The manipulator working process is as follows: the mechanical arm firstly moves horizontally to the upper part of the coiler 10 under the drive of the horizontal sliding mechanism 812, then moves downwards under the drive of the vertical sliding mechanism 813 until the clamping jaw mechanisms are sleeved on two sides of the coiler 10, the clamping jaw mechanisms 815 clamp the coiler 10, the product jig 3 loosens the coiler 10, the mechanical arm moves upwards under the drive of the vertical sliding mechanism 813 and simultaneously rotates the rotary cylinder 814 by 90 degrees, so that the coiler 10 is changed to be horizontal from vertical, the mechanical arm moves towards the direction of the product conveying assembly 82 under the drive of the horizontal sliding mechanism 812, the mechanical arm passes through the collecting port 41 of the waste collecting box 4, and the mechanical arm places the unqualified coiler 10 into the collecting port 41 of the waste collecting box 4 according to the detection result of the force sensor; the acceptable retractor 10 is placed on the transport assembly 82.

Referring to fig. 2, in this embodiment, in order to make man-machine fit better and improve production efficiency, the transmission assembly 82 includes a conveyor belt mounted on the frame 1 and a motor for driving the conveyor belt, two sets of infrared sensors are disposed on the conveyor belt, the two sets of infrared sensors are disposed at a delivery end and a pickup end of the conveyor belt respectively, the two sets of infrared sensors are in signal connection with the motor, and the infrared sensors at the pickup end are connected with an alarm. Specifically, when the qualified coiler 10 is placed at the workpiece placing end by the manipulator, when the infrared sensor 821 at the workpiece placing end detects the coiler 10, a signal is sent to the motor, the motor is started after receiving the signal, the driving conveyor belt drives the coiler 10 to move towards the workpiece taking end, when the infrared sensor 822 at the workpiece taking end detects the coiler 10, a signal is sent to the motor and the alarm, and the motor stops and the alarm starts to give an alarm to remind a worker to take the qualified coiler 10.

In this embodiment, the detection device further includes a PLC electrical control box, and the operation of the entire detection device is controlled by the PLC electrical control.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. A tensile force check out test set for safety belt retractor reset spring rotates on the retractor and is connected with the locking claw, reset spring one end is connected on the retractor, and the other end is connected on the locking claw, the locking claw rotates so that reset spring extends or contracts, its characterized in that, check out test set includes:

a frame body;

2. The tension detecting apparatus for a seatbelt retractor return spring according to claim 1, wherein the elastic member includes a push rod mounted on the long arm portion and a spring partially sleeved outside the push rod, both ends of the spring being connected to the long arm portion and the force sensor, respectively.

3. The tension detecting apparatus for a seatbelt retractor return spring according to claim 2, wherein the detecting station further comprises a pressing device including a first cylinder provided above the retractor and a pressing plate mounted on the first cylinder, the pressing plate pressing against the retractor under the driving of the first cylinder driving.

4. The tension detecting apparatus for a seatbelt retractor return spring according to claim 1, wherein the product jig comprises:

5. The tension detecting apparatus for a return spring of a seatbelt retractor according to claim 4, wherein the detecting apparatus further comprises a driving assembly mounted on the frame body, the driving assembly is provided with two groups, and is respectively disposed in the feeding station and the discharging station, and the limiting assembly is pulled out of the retractor under the driving of the driving assembly.

6. The tension detecting apparatus for a seatbelt retractor return spring according to claim 5, wherein the driving assembly includes a second cylinder installed on the frame, a push rod hinged on an output shaft of the second cylinder, and a connecting rod hinged on a cylinder body of the second cylinder and the push rod, respectively, the second cylinder being movably connected with the limit assembly by driving a portion of the push rod to enter above the rotating platform, and causing the limit assembly to be driven to be pulled out of the retractor.

7. The tension detecting apparatus for a seatbelt retractor return spring according to claim 1, wherein the assembling station is provided with a detecting member provided on the frame body directly above the retractor, the detecting member being for detecting a locking claw on the retractor.

8. The tension detecting apparatus for a seatbelt retractor return spring according to claim 6, wherein the blanking station includes:

9. The tension detecting apparatus for a seatbelt retractor return spring according to claim 8, wherein the gripper assembly includes a truss and a robot movably connected to the truss, one end of the truss is disposed adjacent to the product jig, the other end is disposed adjacent to the transfer assembly, and a collection port of the scrap collecting receptacle is disposed between the product jig and the transfer assembly.

10. The tension detecting apparatus for a seatbelt retractor return spring according to claim 9, wherein the robot includes a horizontal sliding mechanism mounted on the truss, a vertical sliding mechanism mounted on the horizontal sliding mechanism, a rotary cylinder mounted on the vertical sliding mechanism, and a jaw mechanism mounted on an output shaft of the rotary cylinder.