Incoming strip distance compensation device of visual system

Abstract

The utility model provides a visual system compensation strip-entering distance device, which comprises an injection molding press, an industrial camera module, an injection molding die, a top strip-entering die assembly and a soft strip-entering die assembly, the industrial camera module and the injection molding die are arranged on the injection molding press, the industrial camera module is arranged above the injection molding die, and the soft strip-entering die assembly is arranged above the top strip-entering die assembly. The top strip mold entering assembly and the soft strip mold entering assembly are both connected with a mold cavity of the injection mold, a reference block assembly is arranged on the injection mold, and the industrial camera module can detect the relative positions of the top strip, the soft strip and the recognition assembly. The industrial camera module is additionally arranged, the relative positions of the top strip and the soft strip after strip feeding and the recognition groove in the reference block are detected through visual positioning, information is fed back to the PLC, and the PLC controls the top strip power module or the soft strip power module to drive the top strip or soft strip clamp on the top strip power module or the soft strip power module again to carry the top strip or the soft strip to the designated position. Therefore, the strip feeding distance fluctuation is compensated, and the yield of sealing strip die connection is improved.

Description

Technical Field

[0001] This utility model belongs to the field of injection molding equipment technology, and specifically relates to a vision system for compensating for the entry distance of the strip. Background Technology

[0002] With the rapid development of my country's automobile industry, automobile production scale is increasing, and the demand for sealing strips, as an integral part of automobiles, is also growing. A complete sealing strip requires two production processes: cutting and injection molding, to form a finished product. To meet the demand for large-volume production, automated production lines integrating cutting and injection molding are established to improve production efficiency. Automated insertion of the sealing strip into the injection mold is also a crucial step in improving production efficiency. However, because the sealing strip is made of rubber, its shape fluctuates during the production of semi-finished sealing strips. When the sealing strip becomes larger, it will rub against the mold cavity, increasing the insertion resistance. Excessive insertion resistance will affect the accuracy of the automated insertion of the sealing strip to the mold joint position, reducing the yield rate of the sealing strip after mold joint. Utility Model Content

[0003] Purpose of the utility model: In order to overcome the above shortcomings, this utility model provides a vision system to compensate for the entry distance of the sealing strip. By adding an industrial camera module, the relative position of the top strip, soft strip and the identification groove on the reference block is detected by visual positioning. The information is fed back to the PLC controller. The PLC controller controls the top strip power module or soft strip power module to drive the top strip or soft strip clamp on it to transport the top strip or soft strip to the designated position. This compensates for the fluctuation of the sealing strip entry distance caused by the entry resistance, thereby improving the yield of the sealing strip mold.

[0004] Technical Solution: To achieve the above objectives, this utility model provides a vision system for compensating for the distance between the top strip and the bottom strip, comprising: an injection molding press, an industrial camera module, an injection mold, a top strip entry assembly, and a soft strip entry assembly. The industrial camera module and the injection mold are mounted on the injection molding press, with the industrial camera module positioned above the injection mold. Both the top strip entry assembly and the soft strip entry assembly are connected to the mold cavity of the injection mold. The injection mold is equipped with a recognition component, and the industrial camera module can detect the relative positions of the top strip, the soft strip, and the recognition component.

[0005] Furthermore, the injection mold cavity is provided with an ejector bar inlet and a flexible strip inlet, the ejector bar entry assembly is connected to the ejector bar inlet, and the flexible strip entry assembly is connected to the flexible strip inlet;

[0006] The identification component includes a top strip reference block and a soft strip reference block. The top strip reference block is located at the end of the mold cavity of the injection mold and is opposite to the top strip inlet. The soft strip reference block is located at the end of the mold cavity of the injection mold and is opposite to the soft strip inlet.

[0007] Both the top strip reference block and the flexible strip reference block are provided with identification grooves. The mold cavity end of the injection mold is also provided with a first limiting block and a second limiting block. The industrial camera module detects the relative positions of the top strip, flexible strip, and reference blocks through visual positioning. The first and second limiting blocks respectively limit the movement of the top strip and flexible strip.

[0008] Furthermore, the industrial camera module includes a mounting bracket and a camera. The mounting bracket is fixedly mounted on the injection molding machine, and the camera is mounted on the mounting bracket. The camera is also equipped with a lighting lamp. The lighting lamp provides illumination support in dark environments.

[0009] Preferably, the ejector bar entry assembly includes an ejector bar power module and an ejector bar clamp, wherein the ejector bar power module is disposed on the injection mold, and the ejector bar clamp is slidably disposed on the ejector bar power module.

[0010] The top strip power module includes a lower template, a first drive electric cylinder, and an arc-shaped slider. The lower template is mounted on the injection mold and has an arc-shaped groove. The arc-shaped slider is located within the arc-shaped groove and has a positioning post. The first drive electric cylinder is located at the front end of the lower template. The output shaft of the first drive electric cylinder is connected to the arc-shaped slider via a connecting block. A rotating connecting post is located within the connecting block and is connected to the arc-shaped slider.

[0011] The top bar clamp includes a base plate, a contour support block, and an elbow clamp. The base plate is provided with a positioning hole that mates with a positioning post. The contour support block is located on the base plate. The elbow clamp is located on the base plate. One end of the elbow clamp is provided with a pressure block.

[0012] Before entering the mold, the ejector bar is placed on the contour support block. The pressure block is pressed onto the ejector bar by the elbow clamp, and the ejector bar is installed on the ejector bar fixture. Then, the ejector bar fixture is connected to the positioning pin on the arc-shaped slider through the positioning hole on it. The electric cylinder drives the connecting block, which in turn drives the arc-shaped slider to move and send the ejector bar into the injection mold. The rotating connecting pin in the connecting block ensures that the linear motion of the electric cylinder can drive the arc-shaped slider to move in the arc-shaped groove.

[0013] Furthermore, the soft strip mold entry assembly includes a soft strip power module and a soft strip clamp, wherein the soft strip power module is disposed on the injection mold, and the soft strip clamp is slidably disposed on the soft strip power module.

[0014] The soft strip power module includes a mounting plate, a second drive electric cylinder, and a slider. The mounting plate is mounted on the injection mold and has a sliding groove and a guide groove. An opening and closing cylinder is provided on the side of the mounting plate. The second drive electric cylinder is mounted on the mounting plate and its output shaft is connected to the slider. The slider is located below the mounting plate via a linear guide rail. A lifting cylinder is provided on the slider and is located below the sliding groove.

[0015] The flexible strip clamp includes an upper contour guide, a lower contour guide, a contour base, and an upper contour cover plate. The upper and lower contour guides, the contour base, and the upper contour cover plate are connected by a rotating shaft. The upper and lower contour guides, the lower and upper contour guides, and the contour base are slidably connected by a connecting rod. The contour base is slidably connected to the guide groove and cooperates with the output shaft of the lifting cylinder.

[0016] Before being inserted into the mold, the flexible strip is placed on the lower guide and the mold base of the fixture. Then, the upper guide and the upper cover of the fixture are flipped to complete the installation of the flexible strip into the flexible strip fixture. Subsequently, the flexible strip fixture is installed in conjunction with the guide groove on the mounting plate. The output shaft of the lifting cylinder extends and engages with the flexible strip fixture, driving the electric cylinder to move the slider. The slider drives the lifting cylinder, which in turn moves the flexible strip fixture to slide in the guide groove. When the flexible strip has reached its position, the opening and closing cylinder extends and pushes open the upper cover of the fixture.

[0017] Furthermore, it also includes a PLC controller, which is electrically connected to the industrial camera module, the top strip mold entry assembly, and the soft strip mold entry assembly. This invention employs a feedback adjustment mechanism. First, the industrial camera module identifies the relative positions of the top strip, soft strip, and reference block after the strip has been inserted, thus determining whether the set mold entry position has been reached. The industrial camera module feeds this information back to the PLC controller, which then controls the top strip mold entry assembly and the soft strip mold entry assembly to adjust the positions of the top strip and soft strip. This process compensates for fluctuations in the sealing strip insertion distance caused by insertion resistance, thereby improving the yield rate of the sealing strip mold.

[0018] As can be seen from the above technical solution, this utility model has the following beneficial effects:

[0019] This invention provides a vision system for compensating for the insertion distance of the sealing strip. By adding an industrial camera module, it uses visual positioning to detect the relative position of the top strip, soft strip and the identification groove on the reference block after insertion, and feeds the information back to the PLC controller. The PLC controller controls the top strip power module or soft strip power module to drive the top strip or soft strip clamp on it to transport the top strip or soft strip to the designated position. This compensates for the fluctuation of the sealing strip insertion distance caused by the insertion resistance, thereby improving the yield of the sealing strip mold. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a vision system for compensating for entry line distance according to the present invention;

[0021] Figure 2 This is a top view of a vision system compensation strip distance device according to the present invention;

[0022] Figure 3 This is a top view of a vision system compensation entry distance device according to the present invention (industrial camera module omitted).

[0023] Figure 4 This is an enlarged view of the reference fast assembly described in this utility model;

[0024] Figure 5 This is a schematic diagram of the top bar power module described in this utility model;

[0025] Figure 6 This is a schematic diagram of the top bar clamp described in this utility model;

[0026] Figure 7 This is a schematic diagram of the soft strip mold insertion assembly described in this utility model.

[0027] In the diagram: 1-Injection molding press, 2-Industrial camera module, 21-Mounting bracket, 22-Camera, 3-Injection mold, 31-Identification component, 311-Ejector bar reference block, 312-Soft strip reference block, 32-First limit block, 33-Second limit block, 4-Ejector bar entry assembly, 41-Ejector bar power module, 411-Lower mold plate, 412-First drive electric cylinder, 413-Arc-shaped slider, 414-Connecting block, 415-Rotating connecting column. 42-Top bar clamp, 421-Base plate, 422-Following support block, 423-Elbow clamp, 424-Pressure block, 5-Soft strip mold entry assembly, 51-Soft strip power module, 511-Mounting plate, 512-Second drive electric cylinder, 513-Slider, 514-Opening and closing cylinder, 515-Lifting cylinder, 52-Soft strip clamp, 521-Following upper guide, 522-Following lower guide, 523-Clamping follower base, 524-Clamping follower upper cover plate. Detailed Implementation

[0028] It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0029] like Figure 1-3As shown, a vision system for compensating for the distance between the top strip and the bottom strip includes: an injection molding press 1, an industrial camera module 2, an injection mold 3, a top strip entry assembly 4, and a soft strip entry assembly 5. The industrial camera module 2 and the injection mold 3 are mounted on the injection molding press 1, with the industrial camera module 2 positioned above the injection mold 3. The top strip entry assembly 4 and the soft strip entry assembly 5 are both connected to the mold cavity of the injection mold 3. The injection mold 3 is equipped with a recognition component 31, and the industrial camera module 2 can detect the relative positions of the top strip, the soft strip, and the recognition component 31.

[0030] like Figure 4 As shown, the injection mold 3 has an ejector bar inlet and a flexible strip inlet in its cavity. The ejector bar entry assembly 4 is connected to the ejector bar inlet, and the flexible strip entry assembly 5 is connected to the flexible strip inlet.

[0031] The identification component 31 includes a top strip reference block 311 and a soft strip reference block 312. The top strip reference block 311 is located at the end of the mold cavity of the injection mold 3 and is opposite to the top strip inlet. The soft strip reference block 312 is located at the end of the mold cavity of the injection mold 3 and is opposite to the soft strip inlet.

[0032] Both the top strip reference block 311 and the soft strip reference block 312 are provided with identification grooves, and the mold cavity end of the injection mold 3 is also provided with a first limiting block 32 and a second limiting block 33 respectively.

[0033] Another feasible solution: Since the first limiting block 32 and the second limiting block 33 are both set on the injection mold 3 and located at the mold cavity entrance, the position of entering the mold can also be determined by using a camera to visually locate and detect the relative position of the ejector bar and the first limiting block 32, and the relative position of the soft strip and the second limiting block 33.

[0034] like Figure 1 As shown, the industrial camera module 2 includes a mounting bracket 21 and a camera 22. The mounting bracket 21 is fixedly mounted on the injection molding machine 1, and the camera 22 is mounted on the mounting bracket 21. The camera 22 is also equipped with a lighting lamp.

[0035] like Figure 1 As shown, the ejector bar entry assembly 4 includes an ejector bar power module 41 and an ejector bar clamp 42. The ejector bar power module 41 is mounted on the injection mold 3, and the ejector bar clamp 42 is slidably mounted on the ejector bar power module 41.

[0036] like Figure 5As shown, the top strip power module 41 includes a lower template 411, a first drive electric cylinder 412, and an arc-shaped slider 413. The lower template 411 is mounted on the injection mold 3, and an arc-shaped groove is provided on the lower template 411. The arc-shaped slider 413 is located in the arc-shaped groove and is provided with a positioning post. The first drive electric cylinder 412 is located at the front end of the lower template 411. The output shaft of the first drive electric cylinder 412 is connected to the arc-shaped slider 413 through a connecting block 414. A rotating connecting post 415 is provided in the connecting block 414 and is connected to the arc-shaped slider 413.

[0037] like Figure 6 As shown, the top bar clamp 42 includes a base plate 421, a contour support block 422, and an elbow clamp 423. The base plate 421 is provided with a positioning hole that cooperates with the positioning post. The contour support block 422 is provided on the base plate 421. The elbow clamp 423 is provided on the base plate 421. One end of the elbow clamp 423 is provided with a pressure block 424.

[0038] like Figure 1 , Figure 7 As shown, the soft strip mold assembly 5 includes a soft strip power module 51 and a soft strip clamp 52. The soft strip power module 51 is disposed on the injection mold 3, and the soft strip clamp 52 is slidably disposed on the soft strip power module 51.

[0039] The flexible strip power module 51 includes a mounting plate 511, a second drive cylinder 512, and a slider 513. The mounting plate 511 is mounted on the injection mold 3. The mounting plate 511 is provided with a sliding groove and a guide groove. An opening and closing cylinder 514 is provided on the side of the mounting plate 511. The second drive cylinder 512 is mounted on the mounting plate 511. The output shaft of the second drive cylinder 512 is connected to the slider 513. The slider 513 is located below the mounting plate 511 via a linear guide rail. A lifting cylinder 515 is provided on the slider 513. The lifting cylinder 515 is located below the sliding groove.

[0040] The flexible strip clamp 52 includes an upper contour guide 521, a lower contour guide 522, a clamp contour base 523, and a clamp contour cover plate 524. The upper contour guide 521 and the lower contour guide 522, and the clamp contour base 523 and the clamp contour cover plate 524 are connected by a rotating shaft. The upper contour guide 521 and the clamp contour cover plate 524, and the lower contour guide 522 and the clamp contour base 523 are slidably connected by a connecting rod. The clamp contour base 523 is slidably connected to the guide groove and cooperates with the output shaft of the lifting cylinder 515.

[0041] Further optimization of the scheme also includes a PLC controller, which is electrically connected to the industrial camera module 2, the top strip mold entry assembly 4, and the soft strip mold entry assembly 5, respectively.

[0042] The vision system-based device for compensating for insert distance provided by this utility model involves the ejector bar and the flexible strip being installed in the ejector bar clamp 42 and the flexible strip clamp 52, respectively. Under the action of the ejector bar power module 51 and the flexible strip power module 52, the ejector bar and the flexible strip move towards the mold cavity of the injection mold 3. In actual operation, the flexible strip first enters the mold cavity. After the flexible strip is inserted into the injection mold 3, the camera 22 takes a picture and uses visual positioning to detect the relative position of the flexible strip and the flexible strip reference block 312. The detection result is then sent to the PLC controller. If the detection passes, the next mold-fitting process begins. If the detection fails, the PLC controller controls the flexible strip power module 51 to move the flexible strip forward or backward again. Then, the camera 22 takes another picture until the flexible strip moves to the set insert position, thus completing the insert distance compensation operation. Similarly, the ejector bar's insert process is the same. After the ejector bar and the flexible strip are inserted into the mold, the injection molding press can begin operation.

[0043] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements can be made without departing from the principle of the present utility model, and these improvements should also be considered within the protection scope of the present utility model.

Claims

1. A vision system for compensating entry line distance, characterized in that, include: The injection molding press (1), industrial camera module (2), injection mold (3), top strip entry assembly (4) and soft strip entry assembly (5) are provided on the injection molding press (1). The industrial camera module (2) is located above the injection mold (3). The top strip entry assembly (4) and soft strip entry assembly (5) are both connected to the mold cavity of the injection mold (3). The injection mold (3) is provided with an identification component (31). The industrial camera module (2) can detect the relative position of the top strip, soft strip and identification component (31).

2. The vision system entry distance compensation device according to claim 1, characterized in that, The injection mold (3) has an ejector bar inlet and a soft strip inlet in the cavity. The ejector bar entry assembly (4) is connected to the ejector bar inlet, and the soft strip entry assembly (5) is connected to the soft strip inlet. The identification component (31) includes a top strip reference block (311) and a soft strip reference block (312). The top strip reference block (311) is located at the end of the mold cavity of the injection mold (3) and is opposite to the top strip inlet. The soft strip reference block (312) is located at the end of the mold cavity of the injection mold (3) and is opposite to the soft strip inlet.

3. A vision system entry distance compensation device according to claim 2, characterized in that, The top strip reference block (311) and the soft strip reference block (312) are both provided with identification grooves, and the mold cavity end of the injection mold (3) is also provided with a first limiting block (32) and a second limiting block (33).

4. A vision system approach distance compensation device according to claim 1, characterized in that, The industrial camera module (2) includes a mounting bracket (21) and a camera (22). The mounting bracket (21) is fixedly mounted on the injection molding machine (1), and the camera (22) is mounted on the mounting bracket (21). The camera (22) is also equipped with a lighting lamp.

5. A vision system approach distance compensation device according to claim 1, characterized in that, The ejector bar entry assembly (4) includes an ejector bar power module (41) and an ejector bar clamp (42). The ejector bar power module (41) is mounted on the injection mold (3), and the ejector bar clamp (42) is slidably mounted on the ejector bar power module (41).

6. A vision system approach distance compensation device according to claim 5, characterized in that, The top bar power module (41) includes a lower template (411), a first drive electric cylinder (412), and an arc-shaped slider (413). The lower template (411) is mounted on the injection mold (3). An arc-shaped groove is provided on the lower template (411). The arc-shaped slider (413) is located in the arc-shaped groove and has a positioning post. The first drive electric cylinder (412) is located at the front end of the lower template (411). The output shaft of the first drive electric cylinder (412) is connected to the arc-shaped slider (413) through a connecting block (414). A rotating connecting post (415) is provided in the connecting block (414) and is connected to the arc-shaped slider (413). The top bar clamp (42) includes a base plate (421), a contour support block (422), and an elbow clamp (423). The base plate (421) is provided with a positioning hole that cooperates with the positioning post. The contour support block (422) is located on the base plate (421). The elbow clamp (423) is located on the base plate (421). One end of the elbow clamp (423) is provided with a pressure block (424).

7. A vision system approach distance compensation device according to claim 1, characterized in that, The soft strip mold assembly (5) includes a soft strip power module (51) and a soft strip clamp (52). The soft strip power module (51) is mounted on the injection mold (3), and the soft strip clamp (52) is slidably mounted on the soft strip power module (51).

8. A vision system entry distance compensation device according to claim 7, characterized in that, The soft strip power module (51) includes a mounting plate (511), a second drive electric cylinder (512), and a slider (513). The mounting plate (511) is mounted on the injection mold (3). The mounting plate (511) is provided with a sliding groove and a guide groove. An opening and closing cylinder (514) is provided on the side of the mounting plate (511). The second drive electric cylinder (512) is mounted on the mounting plate (511). The output shaft of the second drive electric cylinder (512) is connected to the slider (513). The slider (513) is located below the mounting plate (511) via a linear guide rail. A lifting cylinder (515) is provided on the slider (513). The lifting cylinder (515) is located below the sliding groove. The flexible strip clamp (52) includes an upper contour guide (521), a lower contour guide (522), a clamp contour base (523), and a clamp contour cover plate (524). The upper contour guide (521) and the lower contour guide (522), the clamp contour base (523), and the clamp contour cover plate (524) are connected by a rotating shaft. The upper contour guide (521) and the clamp contour cover plate (524), the lower contour guide (522) and the clamp contour base (523) are slidably connected by a connecting rod. The clamp contour base (523) is slidably connected to the guide groove and cooperates with the output shaft of the lifting cylinder (515).

9. A vision system approach distance compensation device according to claim 1, characterized in that, It also includes a PLC controller, which is electrically connected to the industrial camera module (2), the top strip mold assembly (4), and the soft strip mold assembly (5), respectively.

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