Fabric positioning and conveying equipment for inlay injection molding and fabric positioning method

Abstract

The present invention discloses a fabric positioning and conveying device and a fabric positioning method for inlay injection molding, comprising a fabric storage unit, a fabric grabbing unit and a fabric positioning unit, wherein the fabric storage unit comprises a left-right symmetrical fabric transport trolley and a frame, wherein the fabric grabbing unit comprises two parallel first slide rails, a parallel first movable plate and a second movable plate matched by a first slider on the first slide rail, a clamping cylinder and a guide column fixed by a shaft sleeve are fixed in the middle of the first movable plate, and the fabric positioning unit comprises a conveying module, a fabric seat, a brush positioning mechanism and a pressing mechanism, wherein the brush positioning mechanism is placed between the pressing mechanism and the clamping claw. Since the leather fabric has a certain ductility and the leather fabric is in a curved shape after being grabbed, the brush positioning mechanism is used to step-by-step beat the fabric, thereby realizing the precise positioning of the fabric, and meeting the inlay injection molding production process requirements of high-precision leather fabrics.

Description

Technical Field

[0001] The invention relates to the field of automobile leather fabric production lines, in particular to a fabric positioning and conveying device for inlay injection molding and a fabric positioning method. Background Art

[0002] Injection mold inlay is a popular automotive interior injection molding technology at home and abroad. Because this technology has many advantages, such as saving some injection molds, saving equipment floor space and reducing equipment investment, it is increasingly sought after by various automotive parts manufacturers. Although in-mold inlay has many advantages, this technology requires a relatively high pre-positioning accuracy of the inlaid parts before injection molding, which directly affects the product qualification rate, especially for soft leather fabrics.

[0003] Traditional leather fabric inlay injection molding often uses robots to inlay large-sized fabrics into molds. This process not only has poor fabric utilization, but also requires subsequent punching and cutting processes, which greatly increases product manufacturing time and product manufacturing costs, while also increasing the equipment footprint. Summary of the invention

[0004] The purpose of the present invention is to solve the deficiencies of the prior art and to provide a fabric positioning and conveying device and a fabric positioning method for inlay injection molding.

[0005] In order to achieve the above objectives, the following technical solutions are provided:

[0006] A fabric positioning and conveying device for inlay injection molding, comprising a fabric storage unit placed below the device, a fabric grabbing unit placed above the fabric storage unit, and a fabric positioning unit placed below and in front of the fabric grabbing unit, the fabric storage unit comprising a left-right symmetrical fabric transport trolley and a frame, the bottom of the frame is rectangular, guide rollers are distributed and fixed on the two long sides, a limiting mechanism and an in-place sensor are fixed on the middle crossbeam, the limiting mechanism comprises a rotating clamping cylinder and a locking piece placed on the extending rod of the rotating clamping cylinder, the fabric transport trolley comprises a panel, a locking block, an in-place sensor, a guide rail at the bottom of the panel and a guide column fixed on the upper part of the panel, fabrics are placed in the guide column, the guide rail slides in cooperation with the guide roller, the locking block cooperates with the locking piece of the rotating clamping cylinder to lock the fabric transport trolley, the fabric grabbing unit comprises two parallel first slide rails, a parallel first movable plate and a second movable plate matched by a first slider on the first slide rail, a clamping cylinder and a guide column fixed by a shaft sleeve are fixed in the middle of the first movable plate, The cam body part of the second electric cylinder is fixed on one side of the first movable plate, and the extending rod part of the first electric cylinder is fixed on the second movable plate. Similarly, a clamping cylinder and a guide column fixed by a shaft sleeve are fixed in the middle of the second movable plate. The cylinder body part of the second electric cylinder is fixed on one side of the second movable plate, and the extending rod part of the second electric cylinder is fixed on the first movable plate. A clamping claw is fixed on the extending rod part of the clamping cylinder. The fabric positioning unit comprises a conveying module, a fabric seat, a brush positioning mechanism and a pressing mechanism. The brush positioning mechanism is fixed on the front end of the frame of the fabric storage unit. The conveying module comprises a synchronous belt, a motor that drives the synchronous belt, a tensioning wheel and a second slideway arranged above and below the synchronous belt. Second sliders are installed on both sides below the fabric seat, and the second slider slides with the second slideway. The synchronous belt is fixed to the bottom of the fabric seat through a clamping member. The pressing mechanism comprises a contoured pressing plate and a cylinder. The contoured pressing plate and the cylinder are installed by manually rotating bolts, and the brush positioning mechanism is placed between the pressing mechanism and the clamping claw.

[0007] A fabric positioning method for a fabric positioning and conveying device for inlay injection molding, comprising the following steps:

[0008] S1: Place the fabrics in a stacking manner on the panel of the fabric transport trolley of the fabric storage unit, push the fabric transport trolley onto the frame, and after the fabric transport trolley contacts the in-place sensor, the rotating clamping cylinder drives the locking piece and the locking block on the fabric transport trolley to lock the fabric transport trolley and the frame;

[0009] S2: After the fabric grabbing unit senses the fabric, it drives the clamping claw to move to the top of the fabric through the first and second electric cylinders, drives the clamping claw downward through the clamping cylinder, and grabs the fabric through the clamping claw;

[0010] S3: The clamping cylinder drives the clamping claw to retract, and the first electric cylinder and the second electric cylinder retract and move to the bottom of the fabric seat, and place the fabric on the upper plate of the fabric seat;

[0011] S4: The fabric seat moves toward the brush positioning mechanism through the synchronous belt of the conveying module. After receiving the flapping position instruction of the fabric seat, the brush positioning mechanism flaps the fabric in the form of repeated expansion and contraction, so that the fabric is positioned with the fabric seat once, that is, the fabric has no boundary beyond the positioning piece;

[0012] S5: The synchronous belt moves the fabric seat to the bottom of the pressing mechanism and stops. The pressing mechanism drives the contour pressing plate through the cylinder to position the fabric for the second time and press it tightly in the fabric seat. At this time, the fabric is completely fitted in the positioning piece.

[0013] S6: The synchronous belt conveys the fabric seat toward the limit block. When the displacement sensor detects the fabric seat in place signal, the synchronous belt stops moving. At this time, the fabric is transported to the designated position. The conveying device sends a fabric preparation qualified signal to the robot, and then the robot grabs the prepared fabric for inlay injection molding. After that, the robot sends a fabric seat return signal to the conveying device, and the synchronous belt drives the fabric seat back to the initial position to wait for the next cycle.

[0014] The beneficial effects of the present invention are:

[0015] 1. The equipment uses a V-shaped double-acting cylinder as a low-friction cylinder to drive the fabric gripper to grab the fabric, which solves the problem of damage to the A side of the fabric due to high pressure, and also prolongs the service life of the fabric grabbing unit. Since the leather fabric has a certain ductility, and the leather fabric is in a curved shape after grabbing, and the size of the leather fabric after punching has a certain error, it is difficult to put the fabric into the fabric seat with a positioning accuracy of ±1mm using conventional positioning methods. This application uses a brush positioning mechanism to perform step-by-step patting on the fabric, thereby achieving precise positioning of the fabric, meeting the requirements of the inlay injection molding production process of high-precision leather fabrics.

[0016] 2. As leather fabrics are stored in stacks through fabric storage units, the fatigue strength of direct production staff in laying leather fabrics is greatly reduced, and the injection molding production efficiency is improved. Combined with centralized trimming and cutting of injection molding, the goal of saving 0.5 direct production staff per shift can be achieved, realizing lean production. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of a fabric positioning and conveying device used for inlay injection molding;

[0018] Figure 2 is a schematic diagram of the fabric storage unit structure;

[0019] Figure 3It is a partial schematic diagram of the frame;

[0020] Figure 4 This is a schematic diagram of a fabric transport trolley;

[0021] Figure 5 It is a schematic diagram of the fabric grabbing unit structure;

[0022] Figure 6 Schematic diagram of the gripper structure;

[0023] Figure 7 It is a schematic diagram of the fabric positioning unit structure;

[0024] Figure 8 for Figure 7 The enlarged schematic diagram at A in the middle;

[0025] Fig. 9 is a schematic diagram of the brush positioning mechanism;

[0026] Fig.10 This is the front view of the fabric transport trolley and the frame;

[0027] Fig.11 Indicates the gripper Figure 1 ;

[0028] Fig.12 Indicates the gripper Figure 2 . DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present invention.

[0030] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0031] In addition, in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Figure 1 The invention relates to a fabric positioning and conveying device for inlay injection molding, comprising a fabric storage unit 10 disposed below the device, a fabric grabbing unit 20 disposed above the fabric storage unit 10, and a fabric positioning unit 30 disposed below and in front of the fabric grabbing unit 20. Figure 2-4 The fabric storage unit 10 includes a left-right symmetrical fabric transport trolley 101 and a frame 100. The bottom of the frame 100 is rectangular, and guide rollers 110 are fixed on the two long sides. A limiting mechanism and an in-place sensor 113 are fixed to the middle crossbeam. The limiting mechanism includes a rotating clamping cylinder 111 and a locking piece 112 placed on the extending rod of the rotating clamping cylinder 111. The fabric transport trolley 101 includes a panel 114, a locking block 115, an in-place sensor, a guide rail 117 at the bottom of the panel 114, and a guide column 116 fixed on the upper part of the panel 114. Fabrics are placed in the guide column 116. The guide rail 117 slides in cooperation with the guide roller 110. The locking block 115 cooperates with the locking piece 112 of the rotating clamping cylinder 111 to lock the fabric transport trolley 101. Figure 5-6The fabric grabbing unit includes two parallel first slide rails 200, a parallel first movable plate 201 and a second movable plate 202 matched by a first slider 205 on the first slide rails 200, a clamping cylinder 210 and a guide column 211 fixed by a shaft sleeve are fixed in the middle of the first movable plate 201, a cylinder body of a first electric cylinder 204 is fixed on one side of the first movable plate 201, and the extension rod part of the first electric cylinder 204 is fixed on the second movable plate 202. Similarly, a clamping cylinder 210 and a guide column 211 fixed by a shaft sleeve are fixed in the middle of the second movable plate 202, a cylinder body of a second electric cylinder 203 is fixed on one side of the second movable plate 202, and the extension rod part of the second electric cylinder 203 is fixed on the first movable plate 201, and a clamping claw 212 is fixed on the extension rod part of the clamping cylinder 210, as shown in FIG. Figure 7-8 The fabric positioning unit 30 shown includes a conveying module 310, a fabric seat 330, a brush positioning mechanism 300 and a pressing mechanism 320. The brush positioning mechanism 300 is fixed at the front end of the frame 100 of the fabric storage unit 10. The conveying module 310 includes a synchronous belt 301, a motor 302 that drives the synchronous belt 301, a tensioning wheel 303 arranged above and below the synchronous belt 301, and a second slide 304. Second sliders 331 are installed on both sides below the fabric seat 330. The second slider 331 slides with the second slide 304. The synchronous belt 301 is fixed to the bottom of the fabric seat 330 by a clamping member. The pressing mechanism 320 includes a contoured pressing plate 321 and a cylinder 322. The contoured pressing plate 321 and the cylinder 322 are installed by manually rotating bolts. The brush positioning mechanism 300 is placed between the pressing mechanism 320 and the clamp 212.

[0033] Among them, Fig. 9 The brush positioning mechanism 300 shown includes a telescopic cylinder 307 fixed on the frame 100 of the fabric storage unit 10 and a brush 308 at the lower part of the telescopic cylinder 307 .

[0034] like Figure 11-12 The clamping jaw 212 shown includes an electrical quick-connect connector 214, a fabric grabbing position detection sensor 213, two double-acting cylinders 215 arranged in a V shape, a V-shaped connecting plate 216, a grabbing needle 217, and a contact-type fabric grabber action triggering sensor. The detailed structure is disclosed in the publication number CN203650539U, and the patent name is a soft material grabber used in an injection molding process.

[0035] Among them, Fig.10 The guide rollers 110 on the two long sides of the frame 100 of the fabric storage unit 10 are cylindrical rollers 117a on one side and grooved rollers 117b on the other side. Correspondingly, the guide rails at the bottom of the panel of the fabric transport trolley cooperate with the cylindrical rollers 117a for a flat guide rail 110a, i.e., the contact surface is flat, and the guide rails 110b cooperate with the grooved rollers 117b for a V-shaped guide rail 110b, i.e., the contact surface is V-shaped.

[0036] Among them, the fabric seat 330 includes a detachable upper plate 332 and a fixed lower plate 333, the lower plate 333 includes a limiting clamping block 335 with a hole, a universal ball 334 and a limiting block 336, the lower part of the upper plate 332 includes a limiting protrusion, the upper part of the upper plate includes a handle 337 and a positioning piece 338 with an inclination, the limiting clamping block 335 with a hole cooperates with the limiting protrusion, the positioning piece 338 is arranged according to the outer contour of the fabric, and the positioning piece 338 forms an obtuse angle with the fabric.

[0037] The second slideway is provided with a fixed limit block 305 and a displacement sensor 306 .

[0038] A fabric positioning method for a fabric positioning and conveying device for inlay injection molding, comprising the following steps:

[0039] S1: Place the fabrics in a stacking manner on the panel 114 of the fabric transport trolley 101 of the fabric storage unit 10, push the fabric transport trolley 101 onto the frame 100, and after the fabric transport trolley 101 contacts the in-place sensor, the rotating clamping cylinder 111 drives the locking member 112 and the locking block 115 on the fabric transport trolley 101 to lock the fabric transport trolley 101 and the frame 100;

[0040] S2: After the fabric grabbing unit 20 senses the fabric, the first electric cylinder 204 and the second electric cylinder 203 drive the clamping claw 212 to move to the top of the fabric, and the clamping cylinder 210 drives the clamping claw 212 to move downward, and the fabric is grabbed by the clamping claw 212;

[0041] S3: The clamping cylinder 210 drives the clamping claw 212 to retract, and the first electric cylinder 204 and the second electric cylinder 203 retract and move to the bottom of the fabric seat 330, and place the fabric on the upper plate of the fabric seat 330;

[0042] S4: the fabric seat 330 moves toward the brush positioning mechanism 300 through the synchronous belt 301 of the conveying module 310. After receiving the position instruction of the fabric seat 330, the brush positioning mechanism 300 beats the fabric in the form of repeated expansion and contraction, so that the fabric is positioned with the fabric seat 330 once, that is, the fabric has no boundary beyond the positioning piece 338;

[0043] S5: The synchronous belt 301 moves the fabric seat 330 to the bottom of the pressing mechanism 320 and stops. The pressing mechanism 320 drives the contour pressing plate 321 through the cylinder 322 to position the fabric in the fabric seat 330 for the second time. At this time, the fabric is completely fitted in the positioning piece 338.

[0044] S6: The synchronous belt 301 transfers the fabric seat 330 to the direction of the limit block 305. When the displacement sensor 306 detects the signal that the fabric seat 330 is in place, the synchronous belt 301 stops moving. At this time, the fabric is transported to the designated position. The conveying device sends a fabric preparation qualified signal to the manipulator, and then the manipulator grabs the prepared fabric for inlay injection molding. After that, the manipulator sends a fabric seat 330 return signal to the conveying device, and the synchronous belt 301 drives the fabric seat 330 back to the initial position to wait for the next cycle.

[0045] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A fabric positioning and conveying device for inlay injection molding, characterized in that: The invention comprises a fabric storage unit disposed below the equipment, a fabric grabbing unit disposed above the fabric storage unit and a fabric positioning unit disposed below and in front of the fabric grabbing unit, the fabric storage unit comprises a fabric transport trolley and a frame body that are symmetrical on both sides, the bottom of the frame body is rectangular, guide rollers are fixed on the two long sides, a limiting mechanism and an in-place sensor are fixed on the middle crossbeam, the limiting mechanism comprises a rotating clamping cylinder and a locking piece disposed on the extending rod of the rotating clamping cylinder, the fabric transport trolley comprises a panel, a locking block, an in-place sensor, a guide rail at the bottom of the panel and a guide column fixed on the upper part of the panel, fabrics are placed in the guide column, the guide rail slides in cooperation with the guide roller, the locking block cooperates with the locking piece of the rotating clamping cylinder to lock the fabric transport trolley, the fabric grabbing unit comprises two parallel first slide rails, a parallel first movable plate and a second movable plate that are matched by a first slider on the first slide rail, a clamping cylinder and a guide column fixed by a shaft sleeve are fixed in the middle of the first movable plate, and one side of the first movable plate The cylinder body part of the first electric cylinder is fixed, and the extending rod part of the first electric cylinder is fixed on the second moving plate. Similarly, a clamping cylinder and a guide column fixed by a shaft sleeve are fixed in the middle of the second moving plate. The cylinder body part of the second electric cylinder is fixed on one side of the second moving plate, and the extending rod part of the second electric cylinder is fixed on the first moving plate. A clamping claw is fixed on the extending rod part of the clamping cylinder. The fabric positioning unit includes a conveying module, a fabric seat, a brush positioning mechanism and a pressing mechanism. The brush positioning mechanism is fixed to the front end of the frame of the fabric storage unit. The conveying module includes a synchronous belt, a motor that drives the synchronous belt, a tensioning wheel and a second slideway arranged above and below the synchronous belt. Second sliders are installed on both sides below the fabric seat, and the second slider slides with the second slideway. The synchronous belt is fixed to the bottom of the fabric seat through a clamping member. The pressing mechanism includes a contoured pressing plate and a cylinder. The contoured pressing plate and the cylinder are installed by manually rotating bolts, and the brush positioning mechanism is placed between the pressing mechanism and the clamping claw. The brush positioning mechanism comprises a telescopic cylinder fixed on the frame of the fabric storage unit and a brush at the bottom of the telescopic cylinder; The clamping claw comprises an electrical quick-connect connector, a fabric grabbing position detection sensor, two double-acting cylinders arranged in a V shape, a V-shaped connecting plate, a grabbing needle, and a contact-type fabric grabbing action triggering sensor.

2. The fabric positioning and conveying device for inlay injection molding according to claim 1 is characterized in that: The guide rollers on the two long sides of the frame of the fabric storage unit are cylindrical rollers on one side and grooved rollers on the other side. Correspondingly, the guide rails at the bottom of the panel of the fabric transport trolley cooperate with the cylindrical rollers for a flat guide rail, i.e., the contact surface is flat, and the guide rails cooperate with the grooved rollers for a V-shaped guide rail, i.e., the contact surface is V-shaped.

3. The fabric positioning and conveying device for inlay injection molding according to claim 1 is characterized in that: The fabric seat includes a detachable upper plate and a fixed lower plate, the lower plate includes a limiting pressing block with a hole, a universal ball and a limiting block, the lower part of the upper plate includes a limiting protrusion, the upper part of the upper plate includes a handle and a positioning piece with an inclination, the limiting pressing block with a hole cooperates with the limiting protrusion, the positioning piece is arranged according to the outer contour of the fabric, and the positioning piece forms an obtuse angle with the fabric.

4. The fabric positioning and conveying device for inlay injection molding according to claim 1 is characterized in that: The second slideway is fixed with a limit block and a displacement sensor.

5. A fabric positioning method for a fabric positioning and conveying device for inlay injection molding according to claim 4, characterized in that: The following steps are involved: S1: Place the fabrics in a stacking manner on the panel of the fabric transport trolley of the fabric storage unit, push the fabric transport trolley onto the frame, and after the fabric transport trolley contacts the in-place sensor, the rotating clamping cylinder drives the locking piece and the locking block on the fabric transport trolley to lock the fabric transport trolley and the frame; S2: After the fabric grabbing unit senses the fabric, it drives the clamping claw to move to the top of the fabric through the first and second electric cylinders, drives the clamping claw downward through the clamping cylinder, and grabs the fabric through the clamping claw; S3: The clamping cylinder drives the clamping claw to retract, and the first electric cylinder and the second electric cylinder retract and move to the bottom of the fabric seat, and place the fabric on the upper plate of the fabric seat; S4: The fabric seat moves toward the brush positioning mechanism through the synchronous belt of the conveying module. After receiving the flapping position instruction of the fabric seat, the brush positioning mechanism flaps the fabric in the form of repeated expansion and contraction, so that the fabric is positioned with the fabric seat once, that is, the fabric has no boundary beyond the positioning piece; S5: The synchronous belt moves the fabric seat to the bottom of the pressing mechanism and stops. The pressing mechanism drives the contour pressing plate through the cylinder to position the fabric for the second time and press it tightly in the fabric seat. At this time, the fabric is completely fitted in the positioning piece. S6: The synchronous belt conveys the fabric seat toward the limit block. When the displacement sensor detects the fabric seat in place signal, the synchronous belt stops moving. At this time, the fabric is transported to the specified position. The conveying equipment will send a fabric preparation qualified signal to the robot, and then the robot grabs the prepared fabric for inlay injection molding; after that, the robot sends a fabric seat return signal to the conveying equipment, and the synchronous belt will drive the fabric seat back to the initial position to wait for the next cycle.

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