CN112899895B - A cloth press-fitting step-by-step sewing device - Google Patents

Abstract

The invention discloses a cloth press-fitting stepping sewing device which comprises a front extension workbench, a rear extension workbench, a front working platform panel, a rear working platform panel, a host machine support frame, a needle head integration mechanism, a positioning device moving mechanism, a material template, a left positioning device and a right positioning device. The cloth press-fitting stepping sewing mechanism adopted by the device realizes stepping movement of large cloth through repeated reciprocating motion of the left positioning device and the right positioning device, enlarges the sewing range of the needle head to the cloth, and realizes large-area sewing of the cloth such as an automobile air bag and the like. The device has higher automation degree, and is completed by adopting automatic operation except feeding and discharging, thereby reducing the requirement on production labor force, reducing the production cost and improving the production efficiency.

Description

A cloth press-fitting step-by-step sewing device

technical field

The invention relates to a cloth press-fitting step-by-step sewing device capable of realizing the two-way movement of cloth and sewing needles to realize large-area cloth sewing, and belongs to the technical field of automobile manufacturing and mechatronics.

Background technique

At present, with the advancement of automobile manufacturing technology and the continuous improvement of automobile safety, higher requirements are put forward for the reliability and safety of automobile airbags. Therefore, in order to meet the current sewing needs of large-area automobile airbags , Just need a kind of automatic production equipment that can realize the continuous sewing of large-area cloth.

At present, the existing sewing production line adopts a continuous production line for the continuous sewing of large-area fabrics. The patent document of the Chinese Patent Publication No. CN110820175A discloses a non-ironing sewing production line integrating light and dark lines of clothing pieces, which can meet the requirements of clothing pieces. However, the continuous sewing of large-area fabrics such as automobile airbags cannot be realized. The patent literature with the Chinese patent publication number CN202415911U discloses an automatic sewing system suitable for the production of airbags, but this device can only realize the sewing of the airbag cloth by the movement of the sewing machine head, and cannot realize the sewing of the cloth during the sewing process. The movement of the airbag caused the small area of the airbag to be sewn, which could not meet the sewing needs of the large-area airbag, and this became a technical problem to be solved urgently.

Contents of the invention

In order to solve the problems of the prior art, the object of the present invention is to overcome the deficiencies of the prior art, and provide a cloth press-fitting step-by-step sewing device, which can realize continuous sewing of large-area cloth, and make the cloth along the Reciprocating movement in the X-axis direction realizes the cloth press-fitting step-by-step sewing manufacturing of large-area cloth. The invention adopts a step-by-step iteration method to sew large-area cloth, expands the sewing range of cloth, and satisfies the current safety requirements for large-scale automobiles. Airbag sewing needs.

In order to achieve the above invention creation purpose, the present invention adopts the following technical solutions:

A step-by-step sewing device for cloth pressing, including a front extension workbench, a rear extension workbench, a front work platform panel, a rear work platform panel, a limiter, a host support frame, a needle integrated mechanism, a positioning device moving mechanism, and a material template, left positioning device, and right positioning device; the front extension workbench and the rear extension workbench are of the same height and are respectively fixed on both sides of the host support frame; the front work platform panel and the rear work platform panel are respectively fixed on the front extension work The upper part of the table and the rear extension workbench are joined together on the upper part of the main frame; the front panel of the working platform and the panel of the rear working platform are installed with two rows of stoppers in parallel on the left and right sides along the X-axis; the upper part of the main frame A needle integration mechanism is installed; the needle integration mechanism is equipped with a needle mechanism that can move along the Y-axis direction of the production line; the material template press-fits the cloth on the front working platform panel and the rear working platform panel, and can be positioned at the position of the stopper The fabric is restricted to move along the X-axis direction; the left and right positioning devices have the same structure and are symmetrically installed on the sliding seat of the positioning device moving mechanism, and can reciprocate synchronously along the X-axis direction.

Preferably, the material template is mainly composed of a rectangular frame spliced by four aluminum profiles and at least 5 pairs of stepping positioning pins arranged at equal intervals on both sides of the upper part. The at least 5 pairs of positioning pins are located on the left and right sides of the rectangular frame. The side equidistant symmetrical arrangement is used for the grabbing of the left and right positioning devices.

Preferably, the structure of the left positioning device and the right positioning device is the same, and it is characterized in that: a mobile platform is installed on the sliding seat of the two mobile platforms supporting the pipe, and a zero-position cylinder base plate is installed on the front end side of the mobile platform. , a zero cylinder base is installed on the base plate of the zero cylinder, a zero cylinder is installed on the zero cylinder base, a zero positioning pin is installed on the front end of the piston rod of the zero cylinder, and when the piston rod extends When the height of the zero position positioning pin is lower than the height of the material template, it plays the role of positioning the initial position of the material template; on the other side of the front end of the mobile platform, a stepping cylinder base plate is installed, and a stepping cylinder base plate is installed on the stepping cylinder base plate. The connecting plate of the air cylinder, the connecting plate of the stepping cylinder is equipped with a downward finger cylinder, and the front parts of the two finger slides of the finger cylinder are respectively equipped with two step positioning pin jaws, and the two step The jaws of the positioning pin can grasp the stepping positioning pin with the opening and closing of the finger slide; a sensor connection plate is installed on the bottom of the zero position cylinder base plate, and a sensor connection plate is installed on the sensor connection plate. The photoelectric sensor is used to detect whether the initial position of the material template is moved in place.

Preferably, when sewing large-area fabrics such as automobile airbags, first open the entire production device according to the production program and initialize the cloth press-fitting mobile sewing device of the present invention. At this time, the left and right positioning devices move to In the initial position, the needle integration mechanism is reset to the initial position, and the zero cylinder piston rods on the left and right positioning devices are in the extended state, and the step positioning pin jaws on the finger cylinder are in the open state. Manually lift the material formwork, fix the cloth on the bottom of the material formwork, put down the material formwork, and push the material formwork forward along the X-axis direction of the production device. The material formwork is always parallel to the X-axis under the action of two rows of limit buckles direction to move forward. When the front part of the material template touches the zero positioning pin on the left and right positioning devices, the material template in-position sensor sends a material template in-position signal. At this time, the zero cylinder piston rods on the left and right positioning devices retract, and the moving mechanism of the positioning device operates and drives the left and right positioning devices to move forward synchronously to the first pair of stepping positioning pins of the material template. At this time, the left 1. The jaws of the two-finger cylinder on the two right positioning devices are closed, and the first pair of stepping positioning pins are grasped, and then the two positioning devices drag the material template and the material to reciprocate along the X axis under the action of the moving mechanism. While the material is moving, the needle integration mechanism reciprocates along the Y-axis direction according to the set sewing program, so that the predetermined material sewing trajectory is formed through the combined movement of the X and Y axes. When the cloth within the control range of the first pair of stepping positioning pins is finished sewing, the two-finger cylinder drags the material template to move to the extreme position away from the initial position, then the two-finger cylinder stepping positioning pin jaws open, and the positioning device moves The mechanism sliding seat drags the left and right positioning devices to move to the second pair of stepping positioning pins. At this time, the two-finger cylinders on the left and right positioning devices grasp the second pair of stepping positioning pins of the material template, and through the combined movement of the positioning device moving mechanism and the needle integration mechanism, the step length range of the second pair of stepping positioning pins inside the fabric for sewing. Repeat the above actions until the sewing of all the fabrics within the range of step length is completed. After the current cloth sewing work is completed, take out the cloth from the lower part of the material template, and press the reset button on the device to reset the entire sewing device, and reinstall the cloth for the next sewing work.

Compared with the prior art, the present invention has the following obvious outstanding substantive features and significant advantages:

1. The present invention uses a step-by-step iteration method to sew large-area fabrics, which expands the sewing range of fabrics and meets the current sewing needs of large-scale airbags in automobiles, with higher efficiency;

2. The device of the present invention has a high degree of automation. Except for loading and unloading, all are completed by automatic operations, which reduces the demand for production labor, reduces production costs, and improves production efficiency.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the device of the present invention.

Fig. 2 is a structural diagram of the material template of the device of the present invention.

Fig. 3 is a structural diagram of the left and right positioning devices of the device of the present invention.

Detailed ways

Below in conjunction with specific implementation example, above-mentioned scheme is described further, and preferred embodiment of the present invention is described in detail as follows:

Embodiment one:

In this embodiment, referring to FIG. 1 , a cloth press-fitting step-by-step sewing device includes a front extension workbench 1 , a rear extension workbench 2 , a front work platform panel 3 , a rear work platform panel 4 , and a limiter 5 , host supporting frame 6, needle integration mechanism 7, positioning device moving mechanism 8, material template 9, left positioning device 10, right positioning device 11; the front extension workbench 1 and the rear extension workbench 2 are of the same height and are respectively fixed on The two sides of the main frame support frame 6; the front working platform panel 3 and the rear working platform panel 4 are respectively fixed on the upper part of the front extension workbench 1 and the rear extension workbench 2, and are put together on the upper part of the main engine support frame 6; The working platform panel 3 and the rear working platform panel 4 are installed with two rows of limit buckles 5 parallel to the left and right sides along the X-axis direction; the needle head integration mechanism 7 is installed on the upper part of the host support frame 6; the needle head integration mechanism 7 is installed on it There is a needle head mechanism that can move along the Y-axis direction of the production line; the material template 9 press-fits the cloth on the front working platform panel 3 and the rear working platform panel 4, and can drive the cloth forward and backward along the X-axis direction under the restriction of the stopper 5 Movement: The left positioning device 10 and the right positioning device 11 have the same structure and are symmetrically installed on the sliding seat of the positioning device moving mechanism 8, and can reciprocate synchronously along the X-axis direction.

The step-by-step sewing device for cloth press-fitting in this embodiment can realize continuous sewing of large-area cloth, and the reciprocating operation of the positioning device makes the cloth reciprocate along the X-axis direction, realizing the cloth press-fit step-by-step sewing for large-area cloth sewing Manufacturing, the present invention uses a step-by-step iteration method to sew large-area cloth, expands the sewing range of cloth, and satisfies the sewing needs of large-scale airbags in automobiles.

Embodiment two:

This embodiment is basically the same as Embodiment 1, especially in that:

In this embodiment, referring to Fig. 1-Fig. 3, a mobile platform D1 is installed on the sliding seat of the moving mechanism 8 of the positioning device, and a zero position cylinder base plate D2 is installed on the front end side of the mobile platform D1. A zero cylinder base D3 is installed on the zero cylinder base plate D2, a zero cylinder D4 is installed on the zero cylinder base D3, and a zero positioning pin D5 is installed on the front end of the piston rod of the zero cylinder D4; When the piston rod is stretched out, the height of the zero positioning pin D5 is lower than the height of the material template 9, which plays the role of positioning the initial position of the material template 9; on the other side of the front end of the mobile platform D1, a stepping cylinder base plate D6 is installed, so that A stepping cylinder connecting plate D7 is installed on the stepping cylinder base plate D6, a downward finger cylinder D8 is installed on the stepping cylinder connecting plate D7, and two fingers are installed on the front of the finger cylinder D8. A step positioning pin jaw D9, the two step positioning pin jaws D9 can realize the grabbing of the step positioning pin W1 along with the opening and closing of the finger slide; the bottom end of the zero position cylinder base plate D2 A sensor connection board D10 is also installed, and a material template in-position sensor D11 is installed on the sensor connection board D10, which is used to detect whether the initial position of the material template 10 is moved in place.

In this embodiment, referring to Fig. 1-Fig. 3, when large-area cloth is sewn, the whole production device is first opened according to the production program, and the cloth press-fitting mobile sewing device is initialized, at this time the left and right positioning devices 10 , 11 moves to the initial position with the positioning device moving mechanism 8, the needle integration mechanism 7 resets to the initial position, and the zero position cylinder piston rod on the left positioning device 10 and the right positioning device 11 is in the extended state, and the step on the finger cylinder D8 The positioning pin jaw D9 is in the open state;

Manually lift the material template, fix the cloth on the bottom of the material template 9, put down the material template 9, and push the material template 9 forward along the X-axis direction of the production device. Move forward along the direction parallel to the X axis; when the front part of the material template 9 touches the zero position positioning pin D5 on the left and right positioning devices 10, 11, the material template 9 in-position sensor D11 sends a material template 9 in-position signal, this , the zero cylinder piston rods on the left and right positioning devices 10 and 11 retract, and the positioning device moving mechanism 8 runs and drives the left and right positioning devices 10 and 11 to move forward synchronously to the first pair of step positioning of the material template 9. At the pin place, at this moment, the step positioning pin jaws D9 of the two-finger cylinder D8 on the left and right positioning devices 10,11 are closed, and grasp the first pair of step positioning pins, then the left and right positioning devices 10,11 are Under the action of the moving mechanism 8 of the positioning device, the material template 9 and the material are dragged to reciprocate along the X-axis; while the material is moving, the needle integration mechanism 7 reciprocates along the Y-axis according to the set sewing program, and through the movement of the X and Y axes Combined movement forms a predetermined material sewing trajectory; when the cloth is sewn within the control range of the first pair of step positioning pins, the two-finger cylinder D8 drags the material template 9 to move to the limit position away from the initial position, and then the two-finger cylinder The step positioning pin jaw D9 of D8 is opened, and the sliding seat sliding seat of the positioning device moving mechanism 8 drags the left and right positioning devices 10, 11 to move to the second pair of step positioning pins; at this time, the left and right positioning The two-finger cylinder D8 on the device 10, 11 grasps the second pair of stepping positioning pins of the material template 9, and through the joint movement of the positioning device moving mechanism 8 and the needle integration mechanism 7 again, the step length range of the second pair of stepping positioning pins the fabric inside to sew;

Repeat the above actions until the sewing of all the fabrics within the step length range is completed; after the sewing of the current fabric is completed, take out the fabric from the lower part of the material template 9, and press the reset button on the device to reset the entire sewing device and reinstall the fabric , for the next sewing job.

The device in this embodiment adopts a step-by-step iteration method to sew large-area cloth, which expands the sewing range of the cloth and meets the current sewing needs of large-scale airbags for automobiles. The device in this embodiment has a high degree of automation, all of which are completed by automatic operations except for loading and unloading, which reduces the demand for production labor, reduces production costs, and improves production efficiency.

Embodiment three:

This embodiment is basically the same as the above-mentioned embodiment, and the special features are:

In this embodiment, referring to FIGS. 1-3 , five pairs of stepping positioning pins W1 are arranged at equal intervals on both sides of the upper part of the material template 9 for grasping by the left positioning device 10 and the right positioning device 11 .

This embodiment uses the sewing process of the automobile airbag as an example to illustrate the specific production process of the cloth press-fitting step-by-step sewing device. Referring to Figure 1, the specific process is:

a. Power on and reset under PLC control:

The left positioning device 10 and the right positioning device 11 move to the initial position with the sliding seats of the two positioning device moving mechanisms 8, the needle integration mechanism 7 resets to the initial position, and the zero position cylinder D4 piston on the left positioning device 10 and the right positioning device 11 The rod is in the extended state, and the step positioning pin jaw D9 on the finger cylinder D8 is in the open state;

b. Prepare the fabric:

Lift the material template 9, fix the cloth on the bottom of the material template 9, put down the material template 9, and push the material template 9 forward along the X-axis direction of the production device; when the front of the material template 9 touches the left positioning device 10 and the right When the zero positioning pin on the positioning device 11, the material template in-position sensor D11 sends a material template in-position signal;

c. Cloth sewing:

The zero position cylinder D4 piston rod on the left positioning device 10 and the right positioning device 11 is retracted, and at the same time, the step positioning pin jaw D9 on the finger cylinder D8 clamps the first pair of positioning pins of the material template 9; the left and right positioning devices 10, 11 and the needle integration mechanism 7 jointly move along the X-axis and Y-axis respectively to sew the fabric within the current range;

d. Cloth step shift:

After the needle integration mechanism 7 sews the cloth within the moving range of the left and right positioning devices 10, 11 and the current positioning device moving mechanism 8 as required, the left and right positioning devices 10, 11 drag the material template 9 to move away from the initial position At the limit position, then the two-finger cylinder stepping positioning pin jaw D9 opens, and the positioning device moving mechanism 8 sliding seat drags the left and right positioning devices 10, 11 to move to the second pair of stepping positioning pins of the material template;

At this time, the two-finger cylinder D8 on the left and right positioning devices 10, 11 grasps the second pair of stepping positioning pins of the material template 9, and once again moves through the joint movement of the positioning device moving mechanism 8 and the needle integration mechanism 7, to the second pair of positioning pins. The fabric within the step length range of the step positioning pin is used for sewing. Repeat the above actions until the sewing of all fabrics within the step length range is completed;

e. Sewing complete sewing device reset: After the current cloth is sewn, take out the cloth from the lower part of the material template 9, and press the reset button on the device to reset the whole sewing device, and reinstall the cloth for the next sewing work.

The cloth press-fit step-by-step sewing mechanism adopted by the cloth press-fit step-by-step sewing device in this embodiment realizes the step-by-step movement of large pieces of cloth through multiple reciprocating movements of the left and right positioning devices, and expands the stitching of the needle to the cloth. It realizes large-area sewing of fabrics such as automobile airbags. In view of the defect that the current sewing device cannot realize the continuous sewing of large-area fabrics, the positioning device can reciprocate to make the fabric reciprocate along the X-axis direction, and realize the fabric press-fitting step-by-step sewing production of large-area fabric sewing.

The embodiment of the present invention has been described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned embodiment, and various changes can also be made according to the purpose of the invention of the present invention. The changes, modifications, substitutions, combinations or simplifications should all be equivalent replacement methods, as long as they meet the purpose of the invention, as long as they do not deviate from the technical principle and inventive concept of the invention, they all belong to the protection scope of the invention.

Claims (3)

1. The utility model provides a marching type sewing device of cloth pressure equipment, includes preceding extension workstation (1), back extension workstation (2), preceding work platform panel (3), back work platform panel (4), spacing buckle (5), host computer support frame (6), syringe needle integrated mechanism (7), positioner moving mechanism (8), material template (9), left positioner (10), right positioner (11), its characterized in that: the front extension workbench (1) and the rear extension workbench (2) are equal in height and are respectively fixed on two sides of the host support frame (6); the front working platform panel (3) and the rear working platform panel (4) are respectively fixed on the upper parts of the front extension working platform (1) and the rear extension working platform (2) and are spliced together on the upper part of the host machine support frame (6); two rows of limiting buckles (5) are arranged on the left side and the right side of the front working platform panel (3) and the rear working platform panel (4) in parallel along the X-axis direction; a needle head integration mechanism (7) is arranged at the upper part of the host machine support frame (6); the needle head integration mechanism (7) is provided with a needle head mechanism which can move along the Y-axis direction of the production line; the material template (9) presses the cloth on the front working platform panel (3) and the rear working platform panel (4) and can drive the cloth to move back and forth along the X-axis direction under the limitation of the limiting buckle (5); the left positioning device (10) and the right positioning device (11) are identical in structure, are symmetrically arranged on the sliding seat of the positioning device moving mechanism (8) in the left-right direction, and can synchronously reciprocate along the X-axis direction;

the material template (9) upper portion both sides equidistant arranged have at least 5 pairs of step locating pin (W1) for left positioner (10), right positioner (11) synchronous snatch in proper order.

2. A cloth press-fitting stepping sewing device according to claim 1, wherein: a mobile station (D1) is installed on a sliding seat of the positioning device moving mechanism (8), a zero-position cylinder base plate (D2) is installed on one side of the front end of the mobile station (D1), a zero-position cylinder seat (D3) is installed on the zero-position cylinder base plate (D2), a zero-position cylinder (D4) is installed on the zero-position cylinder seat (D3), and a zero-position positioning pin (D5) is installed at the front end of a piston rod of the zero-position cylinder (D4); when the piston rod extends out, the height of the zero position positioning pin (D5) is lower than that of the material template (9), so that the initial position positioning effect of the movement of the material template (9) is achieved; a stepping cylinder base plate (D6) is installed on the other side of the front end of the moving platform (D1), a stepping cylinder connecting plate (D7) is installed on the stepping cylinder base plate (D6), a downward finger cylinder (D8) is installed on the stepping cylinder connecting plate (D7), two stepping positioning pin clamping jaws (D9) are installed on the front portions of the two finger sliding platforms of the finger cylinder (D8) respectively, and the two stepping positioning pin clamping jaws (D9) can be opened and closed along with the finger sliding platforms to realize the grabbing of the stepping positioning pin (W1); the device is characterized in that a sensor connecting plate (D10) is further installed at the bottom end of the zero-position cylinder base plate (D2), and a material template in-place sensor (D11) is installed on the sensor connecting plate (D10) and used for detecting whether the initial position of the material template (9) is moved in place or not.

3. A cloth press-fitting stepping sewing device according to claim 2, wherein: when large-area cloth sewing is carried out, firstly, the whole production device is opened according to a production program, and a cloth press-fitting movable sewing device is initialized, at the moment, a left positioning device (10) and a right positioning device (11) move to initial positions along with a positioning device moving mechanism (8), a needle head integration mechanism (7) resets to the initial positions, zero-position cylinder piston rods on the left positioning device (10) and the right positioning device (11) are in an extending state, and a stepping positioning pin clamping jaw (D9) on a finger cylinder (D8) is in an opening state;

manually lifting the material template, fixing the cloth at the bottom of the material template (9), putting down the material template (9), pushing the material template (9) forward along the X-axis direction of the production device, and enabling the material template (9) to move forward along the direction parallel to the X-axis all the time under the action of the two rows of limiting buckles (5); when the front part of the material template (9) touches zero-position positioning pins (D5) on a left positioning device (10) and a right positioning device (11), a material template in-place sensor (D11) sends out a material template (9) in-place signal, at the moment, zero-position cylinder piston rods on the left positioning device (10) and the right positioning device (11) retract, a positioning device moving mechanism (8) operates and drives the left positioning device (10) and the right positioning device (11) to synchronously move forwards to a first pair of stepping positioning pins of the material template (9), at the moment, stepping positioning pin clamping jaws (D9) of two finger cylinders (D8) on the left positioning device (10) and the right positioning device (11) are closed and grasp the first pair of stepping positioning pins, and then the left positioning device (10) and the right positioning device (11) drag the material template (9) and the material to reciprocate along an X axis under the action of the positioning device moving mechanism (8); when the material moves, the needle head integration mechanism (7) reciprocates along the Y-axis direction according to a set sewing program, and a preset material sewing track is formed through the combined movement of the X, Y axes; after the cloth sewing is finished in the control range of the first pair of stepping positioning pins, the two finger cylinders (D8) drag the material template (9) to move to the limit position far away from the initial position, then the stepping positioning pin clamping jaws (D9) of the two finger cylinders (D8) are opened, and the slide seat of the positioning device moving mechanism (8) drags the left positioning device (10) and the right positioning device (11) to move to the second pair of stepping positioning pins; at the moment, two finger cylinders (D8) on the left positioning device (10) and the right positioning device (11) grasp a second pair of stepping positioning pins of the material template (9), and the cloth in the step length range of the second pair of stepping positioning pins is sewn through the combined movement of the positioning device moving mechanism (8) and the needle head integration mechanism (7);

repeating the above actions until the sewing of the cloth in all step ranges is completed; after the sewing work of the current cloth is finished, the cloth is taken out from the lower part of the material template (9), a reset button on the device is pressed, the reset operation is carried out on the whole sewing device, the cloth is remounted, and the next sewing work is carried out.

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