A seat airbag pre-folding and shaping device

Abstract

A seat airbag pre-folding and shaping device disclosed by the present invention comprises: a folding and shaping platform, one end of the folding and shaping platform being a feeding end and the other end being a discharging end; a hot pressing and shaping mechanism installed on the folding and shaping platform and located between the feeding end and the discharging end for hot pressing and shaping the pre-folded seat airbag; and a PLC control system, the PLC control system being connected to the hot pressing and shaping mechanism. The present invention can effectively achieve the shaping effect of the pre-folded airbag, and it will not become loose in subsequent turnover processes and folding processes, effectively reducing the pre-sewing process, reducing labor costs, and simplifying the process flow.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive airbags, and particularly to a pre-folding and shaping device for seat airbags. Background Art

[0002] The existing folding method for seat airbags is to first perform pre-folding on the seat airbag. After the seat airbag is pre-folded, it is transferred to the airbag folding station through workstations for formal folding. The pre-folding method generally uses internal stuffing folding on one side and upward folding on the other side. Since the fabric of the airbag is made of nylon material and has a certain degree of elasticity, the pre-folded seat airbag is prone to loosening during transfer, thus affecting the final product folding size and folding effect of the subsequent folding process.

[0003] The common solution in the current industry is to add a sewing process after pre-folding, that is, to sew the pre-folded part with a special bursting line to prevent the pre-folded seat airbag from loosening during turnover. However, this method has the following problems: 1. Adding a pre-sewing process increases labor costs and reduces production efficiency; 2. Inspecting the airbag assembly before pre-folding and after pre-sewing increases the inspection process and reduces production efficiency.

[0004] Therefore, through beneficial exploration and research, the applicant has found a method to solve the above problems, and the technical solution to be introduced below was generated under this background. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: to provide a pre-folding and shaping device for seat airbags in view of the deficiencies of the prior art, so as to solve the problem of loosening of the pre-folded seat airbag during turnover, cancel the pre-sewing process, improve production efficiency, and reduce labor costs.

[0006] The technical problem to be solved by the present invention can be achieved by adopting the following technical solutions:

[0007] A pre-folding and shaping device for seat airbags, comprising:

[0008] A folding and shaping platform, one end of the folding and shaping platform is the feeding end, and the other end is the discharging end;

[0009] A hot-pressing and shaping mechanism installed on the folding and shaping platform and located between the feeding end and the discharging end for hot-pressing and shaping the pre-folded seat airbag; and

[0010] A PLC control system, the PLC control system is connected to the hot-pressing and shaping mechanism.

[0011] In a preferred embodiment of the present invention, the hot-pressing and shaping mechanism comprises:

[0012] Left and right lower fixed roller support seats which are arranged on the folding positioning platform and located on the left and right sides of the folding positioning platform;

[0013] Lower fixed roller, the left and right ends of which are respectively rotatably installed on the left and right lower fixed roller support seats;

[0014] Left and right upper floating roller support seats which are arranged on the left and right lower fixed roller support seats;

[0015] Upper floating roller, the left and right ends of which are respectively rotatably installed on the left and right upper floating roller support seats and are arranged parallel to the lower fixed roller up and down. A hot pressing and shaping channel for hot pressing and shaping the pre-folded seat airbag is formed between the upper floating roller and the lower fixed roller;

[0016] A roller driving mechanism which is connected to the PLC control system and is used for driving the lower fixed roller and the upper floating roller to rotate forward and backward; and

[0017] A heating mechanism which is connected to the PLC control system and is used for heating the lower fixed roller and the upper floating roller.

[0018] In a preferred embodiment of the present invention, at least one left and right floating guide post extending in the vertical direction is respectively arranged on the left and right lower fixed roller support seats. The upper ends of the left and right floating guide posts pass through the left and right upper floating roller support seats and extend upward for a certain distance to guide the left and right upper floating roller support seats to float in the vertical direction.

[0019] In a preferred embodiment of the present invention, the roller driving mechanism includes:

[0020] A lower fixed roller driving motor which is installed on the left lower fixed roller support seat or the right lower fixed roller support seat and is connected to the PLC control system and is used for driving the lower fixed roller to rotate forward and backward; and

[0021] An upper floating roller driving motor which is installed on the left upper floating roller support seat or the right upper floating roller support seat and is connected to the PLC control system and is used for driving the upper floating roller to rotate forward and backward.

[0022] In a preferred embodiment of the present invention, a first motor transmission gear is installed on the output shaft of the lower fixed pressure roller driving motor, and a first pressure roller rotating gear is installed at the left end or the right end of the lower fixed pressure roller. The first pressure roller rotating gear meshes with the first motor transmission gear; a second motor transmission gear is installed on the output shaft of the upper floating pressure roller driving motor, and a second pressure roller rotating gear is installed at the left end or the right end of the upper floating pressure roller. The second pressure roller rotating gear meshes with the second motor transmission gear.

[0023] In a preferred embodiment of the present invention, the lower fixed pressure roller driving motor and the upper floating pressure roller driving motor are servo motors.

[0024] In a preferred embodiment of the present invention, the hot pressing and shaping mechanism further includes a speed regulator, which is connected to the PLC control system on one hand and respectively connected to the lower fixed pressure roller driving motor and the upper floating pressure roller driving motor on the other hand, for adjusting the rotation speeds of the lower fixed pressure roller driving motor and the upper floating pressure roller driving motor to achieve the optimal hot shaping effect.

[0025] In a preferred embodiment of the present invention, the heating mechanism includes:

[0026] A lower fixed pressure roller heating rod axially penetrating through the lower fixed pressure roller and connected to the PLC control system;

[0027] An upper floating pressure roller heating rod axially penetrating through the upper floating pressure roller and connected to the PLC control system;

[0028] A first thermocouple installed on the lower fixed pressure roller heating rod for real-time detection of the temperature of the lower fixed pressure roller heating rod;

[0029] A second thermocouple installed on the upper floating pressure roller heating rod for real-time detection of the temperature of the upper floating pressure roller heating rod; and

[0030] A temperature controller, which is connected to the PLC control system on one hand and respectively connected to the first thermocouple and the second thermocouple on the other hand.

[0031] In a preferred embodiment of the present invention, the seat airbag pre-folding and shaping device includes a protective cover provided on the folding and shaping platform for protecting the hot pressing and shaping mechanism.

[0032] Due to the adoption of the above technical solutions, the beneficial effects of the present invention are as follows: The present invention can effectively achieve the shaping effect of the pre-folded airbag, and it will not become loose in the subsequent turnover process and folding process, effectively reducing the pre-sewing process, reducing labor costs, and simplifying the process flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0034] Figure 1 It is a three-dimensional structure schematic diagram of a perspective of the seat airbag pre-folding and shaping device of the present invention.

[0035] Figure 2 It is a three-dimensional structure schematic diagram of another perspective of the seat airbag pre-folding and shaping device of the present invention.

[0036] Figure 3 It is a structure schematic diagram of the hot-pressing and shaping mechanism of the present invention.

[0037] Figure 4 It is a connection schematic diagram between the lower fixed pressing roller and the lower fixed pressing roller driving motor of the present invention.

[0038] Figure 5 It is a connection schematic diagram between the upper floating pressing roller and the upper floating pressing roller driving motor of the present invention.

[0039] Figure 6 It is a working principle schematic diagram of the hot-pressing and shaping of the seat airbag pre-folding and shaping device of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0040] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below with reference to specific illustrations.

[0041] Refer to Figure 1 and Figure 2 , what is shown in the figure is a seat airbag pre-folding and shaping device, including a folding and shaping platform 100, a hot-pressing and shaping mechanism 200, a PLC control system 300 and a protective cover 400.

[0042] The folding and shaping platform 100 is arranged on the frame 110. One end of the folding and shaping platform 100 in the length direction is the feeding end 101, and the other end in the length direction is the discharging end 102. The hot pressing and shaping mechanism 200 is installed on the folding and shaping platform 100 and is located between the feeding end 101 and the discharging end 102, and is used for hot pressing and shaping the pre-folded seat airbag. The PLC control system 300 is installed below the folding and positioning platform 100 and is located inside the frame 110. The PLC control system 300 is connected to the hot pressing and shaping mechanism 200 and is used to control the operation of the hot pressing and shaping mechanism 200. The protective cover 400 is arranged on the folding and shaping platform 100, and is used to shield the hot pressing and shaping mechanism 200, playing a role of safety protection.

[0043] See Figure 3 and in combination with Figure 1 and Figure 2 , the hot pressing and shaping mechanism 200 includes left and right lower fixed roller support seats 210a, 210b, a lower fixed roller 220, left and right upper floating roller support seats 230a, 230b, an upper floating roller 240, a roller driving mechanism and a heating mechanism.

[0044] The left and right lower fixed roller support seats 210a, 210b are arranged on the folding and positioning platform 100 and are located on the left and right sides of the folding and positioning platform 100.

[0045] The left and right ends of the lower fixed roller 220 are respectively rotatably installed on the left and right lower fixed roller support seats 210a, 210b through bearings.

[0046] The left and right upper floating roller support seats 230a, 230b are arranged on the left and right lower fixed roller support seats 210a, 210b. On the left and right lower fixed roller support seats 210a, 210b, two left and right floating guide columns 211a, 211b extending in the vertical direction are respectively arranged at intervals. The upper ends of each left and right floating guide column 211a, 211b correspondingly pass through the left and right upper floating roller support seats 230a, 230b and then extend upward for a certain distance, guiding the left and right upper floating roller support seats 230a, 230b to float in the vertical direction.

[0047] The left and right ends of the upper floating roller 240 are respectively rotatably installed on the left and right upper floating roller support seats 230a, 230b through bearings and are arranged parallel to the lower fixed roller 220 up and down. A hot pressing and shaping channel 201 for hot pressing and shaping the pre-folded seat airbag is formed between the upper floating roller 240 and the lower fixed roller 220.

[0048] The pressure roller driving mechanism is connected to the PLC control system 300 and is used to drive the lower fixed pressure roller 220 and the upper floating pressure roller 240 to rotate forward and backward. Specifically, the pressure roller driving mechanism includes a lower fixed pressure roller driving motor 251 and an upper floating pressure roller driving motor 252.

[0049] See Figure 4 , the lower fixed pressure roller driving motor 251 is installed on the lower left fixed pressure roller support seat 210a and is connected to the PLC control system 300, and is used to drive the lower fixed pressure roller 220 to rotate forward and backward. A motor transmission gear 251a is installed on the output shaft of the lower fixed pressure roller driving motor 251, and a pressure roller rotation gear 221 is installed at the left end of the lower fixed pressure roller 220. The pressure roller rotation gear 221 meshes with the motor transmission gear 251a, and the lower fixed pressure roller driving motor 251 drives the lower fixed pressure roller 220 to rotate through a gear transmission method. In this embodiment, the lower fixed pressure roller driving motor 251 is preferably a servo motor. Of course, the lower fixed pressure roller driving motor 251 can also be installed on the lower right fixed pressure roller support seat 210b, and correspondingly, the pressure roller rotation gear 221 is installed at the right end of the lower fixed pressure roller 220.

[0050] See Figure 5 , the upper floating pressure roller driving motor 252 is installed on the upper right floating pressure roller support seat 230b and is connected to the PLC control system 300, and is used to drive the upper floating pressure roller 240 to rotate forward and backward. A motor transmission gear 252a is installed on the output shaft of the upper floating pressure roller driving motor 252, and a pressure roller rotation gear 241 is installed at the right end of the upper floating pressure roller 240. The pressure roller rotation gear 241 meshes with the motor transmission gear 252a. The upper floating pressure roller driving motor 252 drives the upper floating pressure roller 240 to rotate through a gear transmission method. In this embodiment, the upper floating pressure roller driving motor 252 is preferably a servo motor. Of course, the upper floating pressure roller driving motor 252 can also be installed on the upper left floating pressure roller support seat 230a, and correspondingly, the pressure roller rotation gear 241 is installed at the left end of the upper floating pressure roller 240.

[0051] The hot pressing and shaping mechanism 200 further includes a speed regulator 270. The speed regulator 270 is connected to the PLC control system 300 on the one hand and is respectively connected to the lower fixed pressure roller driving motor 251 and the upper floating pressure roller driving motor 252 on the other hand, and is used to adjust the rotation speeds of the lower fixed pressure roller driving motor 251 and the upper floating pressure roller driving motor 252 to achieve the optimal hot shaping effect.

[0052] The heating mechanism is connected to the PLC control system 300 and is used to heat the lower fixed pressure roller 220 and the upper floating pressure roller 240. Specifically, the heating mechanism includes a lower fixed pressure roller heating rod 261, an upper floating pressure roller heating rod 262, thermocouples 263, 264 and a temperature controller 265.

[0053] The lower fixed pressure roller heating rod 261 is axially inserted into the lower fixed pressure roller 220 and connected to the PLC control system 300, and is used to heat the lower fixed pressure roller 220.

[0054] The upper floating pressure roller heating rod 262 is axially inserted into the upper floating pressure roller 240 and connected to the PLC control system 300, and is used to heat the upper floating pressure roller 240.

[0055] The thermocouple 263 is installed on the lower fixed pressure roller heating rod 261 and located at the left end of the lower fixed pressure roller heating rod 261, and is used to detect the temperature of the lower fixed pressure roller heating rod 261 in real time.

[0056] The thermocouple 264 is installed on the upper floating pressure roller heating rod 262 and located at the left end of the upper floating pressure roller heating rod 262, and is used to detect the temperature of the upper floating pressure roller heating rod 262 in real time.

[0057] The temperature controller 265 is connected to the PLC control system 300 on the one hand and is respectively connected to the thermocouples 263 and 264 on the other hand. It is used to adjust the temperatures of the lower fixed pressure roller 220 and the upper floating pressure roller 240 to make them meet the temperature consistency at the same time.

[0058] The working process of the seat airbag pre-folding and shaping device of the present invention is as follows:

[0059] Manually place the pre-folded seat airbag at the feeding end 101 of the folding and shaping platform 100, and smoothly push the seat airbag 10 into the hot pressing and shaping channel 201 formed between the forward and reverse rotating upper floating pressure roller 240 and the lower fixed pressure roller 220, as Figure 6 shown; the heat generated by the lower fixed pressure roller heating rod 261 and the upper floating pressure roller heating rod 262 is respectively transferred to the lower fixed pressure roller 220 and the upper floating pressure roller 240. The temperatures of the lower fixed pressure roller 220 and the upper floating pressure roller 240 are controlled by the temperature controller 265 to ensure that the temperatures of the lower fixed pressure roller 220 and the upper floating pressure roller 240 reach the temperatures required for heat shaping. The rotation speeds of the lower fixed pressure roller 220 and the upper floating pressure roller 240 are adjusted by the speed regulator 270 to ensure the effect after the seat airbag is pre-folded and heat-shaped. For seat airbags with different thicknesses, the upper floating pressure roller 240 can be automatically adjusted up and down through the left and right floating guide columns 211a and 211b to ensure the optimal effect.

[0060] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A seat airbag pre-folding and shaping device, characterized in that Comprising: A folding and shaping platform, one end of the folding and shaping platform is the feeding end, and the other end is the discharging end; A hot pressing and shaping mechanism installed on the folding and shaping platform and located between the feeding end and the discharging end for hot pressing and shaping the pre-folded seat airbag; And A PLC control system, the PLC control system is connected to the hot pressing and shaping mechanism; The hot pressing and shaping mechanism includes: Left and right lower fixed roller support seats arranged on the folding and positioning platform and located on the left and right sides of the folding and positioning platform; Lower fixed rollers, the left and right ends of the lower fixed rollers are respectively rotatably installed on the left and right lower fixed roller support seats; Left and right upper floating roller support seats arranged on the left and right lower fixed roller support seats; Upper floating rollers, the left and right ends of the upper floating rollers are respectively rotatably installed on the left and right upper floating roller support seats and are arranged parallel to the lower fixed rollers up and down, and a hot pressing and shaping channel for hot pressing and shaping the pre-folded seat airbag is formed between the upper floating rollers and the lower fixed rollers; A roller driving mechanism connected to the PLC control system for driving the lower fixed rollers and the upper floating rollers to rotate forward and backward; and A heating mechanism connected to the PLC control system for heating the lower fixed rollers and the upper floating rollers; At least one left and right floating guide post extending in the vertical direction is respectively arranged on the left and right lower fixed roller support seats, and the upper ends of the left and right floating guide posts pass through the left and right upper floating roller support seats and extend upward for a certain distance to guide the left and right upper floating roller support seats to float in the vertical direction; The roller driving mechanism includes: A lower fixed roller driving motor installed on the left lower fixed roller support seat or the right lower fixed roller support seat and connected to the PLC control system for driving the lower fixed roller to rotate forward and backward; and An upper floating roller driving motor installed on the left upper floating roller support seat or the right upper floating roller support seat and connected to the PLC control system for driving the upper floating roller to rotate forward and backward; The hot pressing and shaping mechanism further includes a speed regulator, which is connected to the PLC control system on one hand and is respectively connected to the lower fixed roller driving motor and the upper floating roller driving motor on the other hand, for adjusting the rotation speeds of the lower fixed roller driving motor and the upper floating roller driving motor to achieve the optimal hot shaping effect; The heating mechanism includes: A lower fixed roller heating rod axially penetrating through the lower fixed roller and connected to the PLC control system; An upper floating roller heating rod axially penetrating through the upper floating roller and connected to the PLC control system; A first thermocouple installed on the lower fixed roller heating rod for real-time detection of the temperature of the lower fixed roller heating rod; A second thermocouple installed on the upper floating roller heating rod for real-time detection of the temperature of the upper floating roller heating rod; and A temperature controller, which is connected to the PLC control system on one hand and is respectively connected to the first thermocouple and the second thermocouple on the other hand; Manually place the pre-folded seat airbag at the feeding end of the folding and shaping platform, and smoothly push the seat airbag into the hot-pressing and shaping channel formed between the upper floating pressure roller rotating in both directions and the lower fixed pressure roller; the heat generated by the heating rods of the lower fixed pressure roller and the upper floating pressure roller is respectively transferred to the lower fixed pressure roller and the upper floating pressure roller. The temperature of the lower fixed pressure roller and the upper floating pressure roller is controlled by the temperature controller to ensure that the temperatures of the lower fixed pressure roller and the upper floating pressure roller reach the temperatures required for hot shaping. The rotation speeds of the lower fixed pressure roller and the upper floating pressure roller are adjusted by a speed regulator to ensure the effect after the pre-folding and hot shaping of the seat airbag. For seat airbags of different thicknesses, the upper floating pressure roller can be automatically adjusted up and down through the left and right floating guide columns to ensure the optimal effect.

2. The seat airbag pre-folding and shaping device according to claim 1, characterized in that, A first motor driving gear is installed on the output shaft of the lower fixed pressure roller driving motor, and a first pressure roller rotating gear is installed at the left end or the right end of the lower fixed pressure roller. The first pressure roller rotating gear meshes with the first motor driving gear; a second motor driving gear is installed on the output shaft of the upper floating pressure roller driving motor, and a second pressure roller rotating gear is installed at the left end or the right end of the upper floating pressure roller. The second pressure roller rotating gear meshes with the second motor driving gear.

3. The seat airbag pre-folding and shaping device according to claim 1, wherein, The lower fixed pressure roller driving motor and the upper floating pressure roller driving motor are servo motors.

4. The seat airbag pre-folding and shaping device according to any one of claims 1 to 3, characterized in that The seat airbag pre-folding and shaping device includes a protective cover arranged on the folding and shaping platform for protecting the hot-pressing and shaping mechanism.

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