Injection molding alignment system and alignment self-checking method thereof

Abstract

The invention relates to an injection molding alignment system and an alignment self-checking method thereof, and relates to the field of automatic injection molding, and the injection molding alignment system comprises an execution assembly and a displacement assembly. The execution assembly comprises a connection limiting mechanism erected on the surface of the working face of the base face, and an alignment mold mechanism connected with the connection limiting mechanism. The displacement assembly comprises a transmission mechanism and a plurality of displacement mold mechanisms, wherein the transmission mechanism is erected on the surface of the working face of the base, a preset working distance is reserved between the transmission mechanism and the connecting limiting mechanism, and the displacement mold mechanisms are movably connected with the transmission mechanism. According to the invention, the industrial camera and the laser radar are arranged on the mold mechanism, so that the mold mechanism can be quickly and accurately aligned and rectified, and meanwhile, a formed product is subjected to detection of undesirable phenomena such as edge overflow at the first time after injection molding is completed, and defective products can be quickly marked; and the injection molding quality is improved, and meanwhile, the self-checking efficiency is effectively improved.

Description

Technical Field

[0001] The invention relates to the field of automated injection molding, and in particular to an injection molding alignment system and an alignment self-checking method thereof. Background Art

[0002] Injection molding is a method of producing industrial products. Products usually use rubber injection molding and plastic injection molding. Injection molding can also be divided into injection molding and die casting. Injection molding machine (abbreviated as injection machine or injection molding machine) is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting materials. Injection molding is achieved through injection molding machines and molds.

[0003] When performing injection molding, the upper mold and the lower mold need to be aligned first, and then the glue injection and molding are performed. During the alignment process of the upper and lower molds, alignment deviation is prone to occur, resulting in insufficient sealing between the upper and lower molds, which in turn causes overflow and increases the number of defective products.

[0004] The alignment method of traditional injection molding alignment devices has poor accuracy, and the detection of defective products after injection molding is not timely enough and the efficiency is low. Summary of the invention

[0005] Purpose of the invention: to provide an injection molding alignment system, and further to provide an alignment self-checking method based on the injection molding alignment system, so as to solve the above problems existing in the prior art.

[0006] Technical solution: An injection molding alignment system includes two components: an execution component and a displacement component.

[0007] The execution assembly includes a connection limit mechanism mounted on the working surface of the base, and a positioning mold mechanism connected to the connection limit mechanism. The displacement assembly includes a transmission mechanism mounted on the working surface of the base, with a predetermined working distance between the transmission mechanism and the connection limit mechanism, and a plurality of displacement mold mechanisms movably connected to the transmission mechanism.

[0008] In a further embodiment, the connection limiting mechanism includes a connecting plate placed on the working surface of the base surface, which performs limiting and adjustment operations through a corresponding robot; and a carrying plate connected to the connecting plate through a support column, which has a predetermined working size and carrying space; the carrying plate is connected to the wall surface away from the connecting plate to the positioning mold mechanism.

[0009] In a further embodiment, the alignment mold mechanism includes an upper mold placed on the wall of the supporting plate away from the connecting plate; the upper mold is provided with multiple groups of through holes, which are externally connected to corresponding injection tubes to facilitate the addition of injection molding agent; connecting blocks are provided at a predetermined distance on the left and right sides of the working direction of the upper mold; the connecting block is connected to the supporting plate and is provided with a through hole of a predetermined working size, and an alignment column of a predetermined working length is slidably connected in the through hole; the alignment column passes through the supporting plate and is movably connected to the supporting plate, and can be flexibly slid and adjusted along the wall of the through hole provided in the connecting block.

[0010] In a further embodiment, the transmission mechanism includes a working surface placed on the base surface, a transmission line with a predetermined working length and a predetermined working distance between the transmission line and the alignment mold mechanism; the working surface of the transmission line is slidably provided with a displacement block, and the displacement blocks are multiple and symmetrically distributed on the working surface of the transmission line, and can be adjusted accordingly by sliding; the displacement block is connected to a pad, and the pad has a predetermined working size and supporting force, and can be adjusted to the corresponding working position following the sliding adjustment of the displacement block.

[0011] In a further embodiment, the displacement mold mechanism includes an adjustment rail mounted on the working surface of the pad and having a predetermined working length and supporting force; the adjustment rails are multiple and symmetrically distributed on the working surface of the pad, and can perform corresponding load-bearing and limiting operations; the working surface of the adjustment rail is slidably provided with an adjustment block, and the adjustment blocks are multiple and symmetrically distributed on the working surface of the adjustment rail, and can perform corresponding sliding adjustment; the adjustment block is connected to a lower mold, the overall working size of the lower mold is compatible with the upper mold, and the working surface of the lower mold is provided with multiple alignment holes.

[0012] In a further embodiment, the transmission line includes two components: a transport plate and a transmission rail; the transport plate is placed on the working surface of the base surface, has a predetermined working size and load-bearing space, and can perform corresponding limiting and load-bearing operations; there are multiple transmission rails, which are symmetrically distributed on the working surface of the transport plate, and a predetermined working distance is left between the multiple transport rails; the displacement block is slidably connected to the transmission rail, and can perform sliding adjustment operations within a predetermined range along the working surface of the transmission rail. A transmission screw is provided between the multiple transmission rails, and the transmission screw is connected to the pad through a linkage block, and the pad can be moved to the corresponding working position by the linkage block along the movement adjustment of the transmission screw.

[0013] In a further embodiment, a plurality of industrial cameras and laser radars are provided on one side of the carrier plate close to the upper mold, and the plurality of industrial cameras and laser radars are distributed in an array; there are a plurality of displacement mold mechanisms, and they are all movably connected to the transmission mechanism, and can perform movable adjustment operations within a predetermined range.

[0014] A self-checking method for an injection molding alignment system comprises the following steps:

[0015] S1, start the linkage block to move along the surface of the transmission screw rod, driving the pad plate to move synchronously as a whole; when the linkage block moves along the surface of the transmission screw rod to the position corresponding to the working position of the alignment mold mechanism, stop moving;

[0016] S2. The laser radar set on the upper mold starts working to detect and align the working position of the alignment hole set on the lower mold. When the working position deviation is detected, the lower mold as a whole can be adjusted by sliding the adjustment block to complete the alignment adjustment process;

[0017] S3, adjusting the connection limit mechanism in the direction close to the lower mold, driving the alignment mold mechanism as a whole to adjust in the direction close to the lower mold; when the upper mold contacts the lower mold, the adjustment of the alignment mold mechanism is stopped, and the alignment column is slidably adjusted in the direction close to the lower mold and inserted into the alignment hole set in the lower mold;

[0018] S4. Perform injection molding through an external injection molding tube. After the injection molding is completed, reverse the above steps to move the upper mold away from the lower mold. The industrial camera installed on the carrier plate takes an image of the area where the injection molded product is located to detect whether there is a flash phenomenon. When unqualified injection molded products are detected, an alarm is triggered and the defective products are manually recycled.

[0019] S5, and so on, repeat S1, S2, S3, S4 in sequence until the system stops working.

[0020] In a further embodiment, in step S4, the industrial camera provided on the carrier plate takes an image of the area where the injection molded product is located to detect whether there is a flash phenomenon, which specifically includes:

[0021] S4-1. Select the injection molded product samples with and without flash phenomenon and place them in the lower mold. Use the industrial camera set on the carrier plate to shoot the injection molded product samples and convert the images into grayscale. Grayscale image of the sample;

[0022] S4-2. Calculate the grayscale mean of injection molded product samples without flash :

[0023]

[0024] In the formula, Represents the total number of pixels in the edge area of ​​the image; Indicates the number of pixels with gray value i; i is the gray level;

[0025] S4-3, dividing the edge of the grayscale image of the injection molded product sample with flash into an image edge area with a predetermined pixel width;

[0026] S4-4. Irradiate the injection molded product sample with a floodlight source with a color temperature of 6500K and a brightness of 1000 nits. Use an industrial camera to take an image under this condition again. Calculate the grayscale in the edge area of ​​the image that is less than The probability density of the pixel point :

[0027]

[0028] In the formula, Represents the total number of pixels in the edge area of ​​the image; Indicates that the grayscale is less than The number of pixels;

[0029] S4-5. Irradiate the injection molded product sample with a floodlight source with a color temperature of 6500K and a brightness of 100 nits. Use the industrial camera to take an image under this condition again. Calculate the grayscale in the edge area of ​​the image that is greater than or equal to the threshold. The probability density of the pixel point :

[0030]

[0031] S4-6, perform injection molding operation through an external injection molding tube, and move the upper mold away from the lower mold after the injection molding operation is completed; the industrial camera set up in the lower mold takes an image of the area where the injection molded product is located and converts it into a grayscale image. The grayscale image of the injection molded product is segmented into an image edge area with a predetermined pixel width;

[0032] Detect whether the edge area of ​​the image contains a probability density in the interval [ ] pixels:

[0033] If included, this pixel or pixel block is defined as the flash area, and unqualified injection molded products are identified and an alarm is issued, and the defective products are manually recycled.

[0034] Beneficial effects: The present invention relates to an injection molding alignment system and an alignment self-inspection method thereof, which relate to the field of automated injection molding, and include two components: an actuator assembly and a displacement assembly. The actuator assembly includes a connection and limiting mechanism mounted on the working surface of a base, and an alignment mold mechanism connected to the connection and limiting mechanism. The displacement assembly includes a transmission mechanism mounted on the working surface of a base, with a predetermined working distance between the transmission mechanism and the connection and limiting mechanism, and a plurality of displacement mold mechanisms movably connected to the transmission mechanism. The present invention can quickly and accurately align and correct the mold mechanism through the industrial camera and laser radar arranged on the mold mechanism, and can also detect defective phenomena such as overflow of the molded product as soon as the injection molding is completed, and can quickly mark defective products, thereby improving the injection molding quality while also effectively improving the self-inspection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is an overall schematic diagram of the present invention.

[0036] Figure 2 Schematic diagram of some components of the present invention.

[0037] Figure 3 It is an enlarged schematic diagram of some components of the present invention.

[0038] Figure 4 It is a schematic diagram of some components of the present invention from another perspective.

[0039] Figure 5 It is an enlarged schematic diagram of the displacement mold mechanism of the present invention.

[0040] The reference numerals in the figure are: base surface 1, connection limit mechanism 2, connecting plate 201, support column 202, bearing plate 203, alignment mold mechanism 3, upper mold 301, connecting block 302, alignment column 303, transmission mechanism 4, transport plate 401, transmission rail 402, displacement block 403, transmission screw 404, linkage block 405, displacement mold mechanism 5, adjustment rail 501, adjustment block 502, lower mold 503, pad 504. DETAILED DESCRIPTION

[0041] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features well known in the art are not described.

[0042] The applicant believes that the alignment method of the traditional injection molding alignment device has poor accuracy, and the detection of defective products after injection molding is not timely enough and the efficiency is low.

[0043] To this end, the applicant designed an injection molding alignment system and an alignment self-inspection method thereof. By means of an industrial camera and a laser radar installed on the mold mechanism, the mold mechanism can be quickly and accurately aligned and corrected. At the same time, the molded product can be inspected for defects such as overflow as soon as the injection molding is completed. Defective products can be quickly marked, which improves the injection molding quality while also effectively improving the self-inspection efficiency.

[0044] The injection molding alignment system involved in the present invention mainly includes two components: an execution component and a displacement component. Among them, the execution component includes a connection limit mechanism 2 mounted on the working surface of the base 1, and an alignment mold mechanism 3 connected to the connection limit mechanism 2. The displacement component includes a transmission mechanism 4 mounted on the working surface of the base, with a predetermined working distance between the connection limit mechanism 2, and a plurality of displacement mold mechanisms 5 movably connected to the transmission mechanism. Considering that the plurality of displacement mold mechanisms 5 need to move in the same working direction in sequence in the later operation process, so as to cooperate with the alignment mold mechanism 3 to perform injection molding operations in sequence, the connection limit mechanism 2 is placed on one side of the transmission mechanism 4, and a predetermined working distance is left between the connection limit mechanism 2 and the transmission mechanism 4. At the same time, the connection limit mechanism 2 and the transmission mechanism 4 are arranged perpendicular to each other in their working directions, and the connection limit mechanism 2 is at a corresponding distance from both ends of the working direction of the transmission mechanism 4, providing sufficient movement and adjustment space for the displacement mold mechanism 5.

[0045] The connection limiting mechanism 2 includes a connection plate 201 placed on the working surface of the base surface 1, which is limited and adjusted by a corresponding manipulator; and a bearing plate 203 connected to the connection plate 201 through a support column 202, which has a predetermined working size and bearing space; the bearing plate 203 is connected to the wall surface away from the connection plate 201. In the later operation process, the connection plate 201 can be flexibly mobilized to drive the entire connection plate 201 to be mobilized to the corresponding working position, and then the bearing plate 203 can be driven to be mobilized to the corresponding working position as a whole, so that the alignment mold mechanism 3 can be flexibly reciprocated in the direction of approaching and away from the displacement mold mechanism 5, which is convenient for the sequential completion and self-checking of the injection molding operation. In actual industrial applications, an external manipulator or other external device that can be driven within a predetermined space can be selected, as long as it can achieve movement in the three directions of XYZ, it can be used as an alternative solution of this embodiment, and it is not limited here.

[0046] The alignment mold mechanism 3 includes an upper mold 301 placed on the wall of the carrier plate 203 away from the connecting plate 201; the upper mold 301 is provided with multiple groups of through holes, and is externally connected with corresponding injection tubes to facilitate the addition of injection molding agent; a connection block 302 is provided at a predetermined distance on the left and right sides of the working direction of the upper mold 301; the connection block 302 is connected to the carrier plate 203, and is provided with a through hole of a predetermined working size, and an alignment column 303 of a predetermined working length is slidably connected in the through hole provided in the connection block 302; the alignment column 303 passes through the carrier plate 203, and is movably connected to the carrier plate 203, and can be flexibly slid and adjusted along the wall of the through hole provided in the connection block 302. In a further preferred embodiment, the overall working size of the carrier plate 203 is larger than the overall working size of the upper mold 301, so that the four sides of the upper mold 301 are left with a predetermined working distance from the carrier plate 203 to facilitate the setting of the alignment column 303. Considering that the alignment accuracy is poor when only one point is considered during the alignment operation, since there are multiple connecting blocks 302 and multiple alignment posts 303, alignment can be performed through multiple points to improve the mold alignment accuracy.

[0047] The transmission mechanism 4 includes a transmission line placed on the working surface of the base surface 1, having a predetermined working length and a predetermined working distance between the transmission line and the alignment mold mechanism 3; the working surface of the transmission line is slidably provided with a displacement block 403, and the displacement blocks 403 are multiple and symmetrically distributed on the working surface of the transmission line, and can be adjusted accordingly by sliding; the displacement block 403 is connected to a pad 504, and the pad 504 has a predetermined working size and supporting force, and can be adjusted to a corresponding working position following the sliding adjustment of the displacement block 403. In the later operation process, the displacement block 403 can be moved and adjusted to drive the pad 504 to move and adjust accordingly along the working surface of the transmission line.

[0048] The displacement mold mechanism 5 includes an adjustment rail 501 with a predetermined working length and supporting force, which is mounted on the working surface of the pad 504; the adjustment rails 501 are multiple and symmetrically distributed on the working surface of the pad 504, and can perform corresponding load-bearing and position-limiting operations; the working surface of the adjustment rail 501 is slidably provided with an adjustment block 502, and the adjustment blocks 502 are multiple and symmetrically distributed on the working surface of the adjustment rail 501, and can perform corresponding sliding adjustments; the adjustment block 502 is connected to a lower mold 503, the overall working size of the lower mold 503 is compatible with the upper mold 301, and the working surface of the lower mold 503 is provided with a plurality of alignment holes. In a further preferred embodiment, there are two adjustment rails 501, and a predetermined working distance is left between the two adjustment rails 501. There are at least four adjustment blocks 502, which are symmetrically distributed on the working surface of the adjustment rail 501. Similarly, corresponding driving screws are also provided between the plurality of adjustment rails 501, and the provided driving screws are connected to the lower mold 503 through corresponding driving blocks. In the later operation process, the driving block can be driven to move along the working surface of the driving screw, thereby driving the plurality of adjustment blocks 502 to synchronously perform corresponding movement and adjustment, so that the lower mold 503 can be adjusted in position accordingly to cooperate with the upper mold 301 to perform corresponding alignment adjustment. The two-way adjustment cooperation between the upper mold 301 and the lower mold 503 can further increase the accuracy of mold alignment.

[0049] The transmission line includes two components: a transport plate 401 and a transport rail 402. The transport plate 401 is placed on the working surface of the base surface 1, has a predetermined working size and carrying space, and can perform corresponding limiting and carrying operations. There are multiple transport rails 402, which are symmetrically distributed on the working surface of the transport plate 401, and a predetermined working distance is left between the multiple transport rails. The displacement block 403 is slidably connected to the transport rail 402, and can perform sliding adjustment operations within a predetermined range along the working surface of the transport rail 402. A transmission screw 404 is provided between the multiple transmission rails 402, and the transmission screw 404 is connected to the pad 504 through a linkage block 405, and the pad 504 can be moved to the corresponding working position by the linkage block 405 along the movement adjustment of the transmission screw 404. In a further preferred embodiment, there are two transmission rails 402, one transmission screw 404, a predetermined working distance is left between the two transmission rails 402, the transmission screw is placed between the two transmission rails 402, and a plurality of displacement blocks 403 are symmetrically distributed on the working surface of the two transmission rails 402, and are connected to the pad 504. In the later operation process, the pad 504 can be driven to move in a corresponding position as a whole through the movement and adjustment of the linkage block 405, and the plurality of displacement blocks 403 can be synchronously moved in a corresponding position through the linkage of the pad 504. In actual industrial applications, the transmission screw 404 can be replaced by a telescopic cylinder, etc., and any driving component that can drive the linkage block 405 to move and adjust the position in a direction horizontal to the working direction of the transmission rail 402 is sufficient.

[0050] A plurality of industrial cameras and laser radars are provided on one side of the carrier plate 203 close to the upper mold 301, and the plurality of industrial cameras and laser radars are distributed in an array; there are a plurality of displacement mold mechanisms 5, and they are all movably connected to the transmission mechanism 4, and can perform movable adjustment operations within a predetermined range.

[0051] Based on the above injection molding alignment system, the present invention proposes an alignment self-checking method for the injection molding alignment system, and the specific steps are as follows:

[0052] First, start the linkage block 405 to move along the surface of the transmission screw rod 404, driving the pad 504 to move synchronously as a whole; when the linkage block 405 moves along the surface of the transmission screw rod 404 to correspond to the working position of the alignment mold mechanism 3, stop moving.

[0053] Next, the laser radar provided on the upper mold 301 is started to detect and align the working position of the alignment holes provided on the lower mold 503. When a deviation in the working position is detected, the working position of the lower mold 503 as a whole can be adjusted by sliding the adjustment block 502 to complete the alignment adjustment process.

[0054] Then, the connection limit mechanism 2 is adjusted toward the direction close to the lower mold 503, driving the alignment mold mechanism 3 as a whole to be adjusted toward the direction close to the lower mold 503; when the upper mold 301 contacts the lower mold 503, the adjustment of the alignment mold mechanism 3 is stopped, and the alignment column 303 is slidably adjusted toward the direction close to the lower mold 503 and inserted into the alignment hole set in the lower mold 503.

[0055] Subsequently, the injection molding operation is carried out through an external injection molding tube. After the injection molding operation is completed, the above steps are reversed to move the upper mold 301 away from the lower mold 503; the industrial camera provided on the supporting plate 203 takes an image of the area where the injection molded product is located to detect whether there is a flash phenomenon. When unqualified injection molded products are detected, an alarm is triggered and the defective products are manually recycled.

[0056] Finally, repeat the above steps in sequence, and so on, until the system stops working.

[0057] At the same time, the industrial camera provided on the carrier plate takes images of the area where the injection molded product is located to detect whether there is a flash phenomenon, specifically including:

[0058] First, select the injection molded product samples with and without flash and place them in the lower mold. Use the industrial camera on the carrier plate to take pictures of the injection molded product samples and convert the images into grayscale. A sample grayscale image of .

[0059] Next, calculate the grayscale mean of the injection molded product sample without flash phenomenon :

[0060]

[0061] In the formula, Represents the total number of pixels in the edge area of ​​the image; Represents the number of pixels with gray value i; i is the gray level.

[0062] Subsequently, the edge of the grayscale image of the injection molded product sample with flash phenomenon is segmented into an image edge area with a predetermined pixel width.

[0063] Then, the injection molded product sample was irradiated with a floodlight source with a color temperature of 6500K and a brightness of 1000 nits. The industrial camera took the image under this condition again and calculated the grayscale in the edge area of ​​the image less than The probability density of the pixel point :

[0064]

[0065] In the formula, Represents the total number of pixels in the edge area of ​​the image; Indicates that the grayscale is less than The number of pixels.

[0066] The injection molded product sample is irradiated with a floodlight source with a color temperature of 6500K and a brightness of 100 nits. The industrial camera takes the image under this condition again and calculates the grayscale greater than or equal to the threshold in the edge area of ​​the image. The probability density of the pixel point :

[0067]

[0068] Finally, the injection molding operation is carried out through an external injection molding tube. When the injection molding operation is completed, the upper mold is moved away from the lower mold; the industrial camera set up in the lower mold takes an image of the area where the injection molded product is located and converts it into a grayscale image. The edge of the grayscale image of the injection molded product is segmented into an image edge area with a predetermined pixel width.

[0069] Detect whether the edge area of ​​the image contains a probability density in the interval [ ] pixels:

[0070] If included, this pixel or pixel block is defined as the flash area, and unqualified injection molded products are identified and an alarm is issued, and the defective products are manually recycled.

[0071] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes may be made to it in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. An injection molding alignment system, characterized in that include: The execution assembly includes a connection and limiting mechanism mounted on the working surface of the base surface, and a positioning mold mechanism connected to the connection and limiting mechanism; The displacement assembly comprises a transmission mechanism which is mounted on the working surface of the base and has a predetermined working distance with the connection limit mechanism, and a plurality of displacement mold mechanisms which are movably connected with the transmission mechanism.

2. The injection molding alignment system according to claim 1, characterized in that: The connection and limiting mechanism includes a connection plate placed on the working surface of the base surface, which performs limiting and adjustment operations through a corresponding robot; and a bearing plate connected to the connection plate through a support column and having a predetermined working size and bearing space; the alignment mold mechanism is connected to the wall of the bearing plate away from the connection plate.

3. The injection molding alignment system according to claim 2, characterized in that: The alignment mold mechanism includes an upper mold placed on the wall of the supporting plate away from the connecting plate; the upper mold is provided with multiple groups of through holes, which are externally connected to corresponding injection tubes to facilitate the addition of injection molding agent; connecting blocks are provided at a predetermined distance on the left and right sides of the working direction of the upper mold; the connecting block is connected to the supporting plate and is provided with a through hole of a predetermined working size, and an alignment column of a predetermined working length is slidably connected in the through hole; the alignment column passes through the supporting plate and is movably connected to the supporting plate, and can be flexibly slidably adjusted along the wall of the through hole provided in the connecting block.

4. The injection molding alignment system according to claim 3, characterized in that: The transmission mechanism includes a working surface placed on the base surface, a transmission line with a predetermined working length and a predetermined working distance between the transmission line and the alignment mold mechanism; a displacement block is slidably arranged on the working surface of the transmission line, and the displacement blocks are multiple and symmetrically distributed on the working surface of the transmission line, and can be adjusted accordingly by sliding; the displacement block is connected to a pad, and the pad has a predetermined working size and supporting force, and can be adjusted to a corresponding working position following the sliding adjustment of the displacement block.

5. The injection molding alignment system according to claim 4, characterized in that: The displacement mold mechanism includes an adjustment rail mounted on the working surface of the pad and having a predetermined working length and supporting force; the adjustment rails are multiple and symmetrically distributed on the working surface of the pad, and can perform corresponding load-bearing and limiting operations; the working surface of the adjustment rail is slidably provided with an adjustment block, and the adjustment blocks are multiple and symmetrically distributed on the working surface of the adjustment rail, and can perform corresponding sliding adjustment; the adjustment block is connected to a lower mold, the overall working size of the lower mold is compatible with the upper mold, and the working surface of the lower mold is provided with a plurality of alignment holes.

6. The injection molding alignment system according to claim 4, characterized in that: The transmission line includes two components: a transport plate and a transport rail; the transport plate is placed on the working surface of the base surface, has a predetermined working size and carrying space, and can perform corresponding limiting and carrying operations; there are multiple transport rails, which are symmetrically distributed on the working surface of the transport plate, and a predetermined working distance is left between the multiple transport rails; the displacement block is slidably connected to the transport rail, and can perform a sliding adjustment operation within a predetermined range along the working surface of the transport rail; A transmission screw rod is arranged between the plurality of transmission rails, and the transmission screw rod is connected to the pad via a linkage block, and the pad plate can be moved to a corresponding working position by adjusting the linkage block along the movement of the transmission screw rod.

7. The injection molding alignment system according to claim 3, characterized in that: A plurality of industrial cameras and laser radars are provided on one side of the carrier plate close to the upper mold, and the plurality of industrial cameras and laser radars are distributed in an array; there are a plurality of displacement mold mechanisms, and they are all movably connected to the transmission mechanism, and can perform movable adjustment operations within a predetermined range.

8. A self-checking method for an injection molding alignment system according to any one of claims 1 to 7, characterized in that The following steps are involved: S1, start the linkage block to move along the surface of the transmission screw rod, driving the pad plate to move synchronously as a whole; when the linkage block moves along the surface of the transmission screw rod to the position corresponding to the working position of the alignment mold mechanism, stop moving; S2. The laser radar set on the upper mold starts working to detect and align the working position of the alignment hole set on the lower mold. When the working position deviation is detected, the lower mold as a whole can be adjusted by sliding the adjustment block to complete the alignment adjustment process; S3, adjusting the connection limit mechanism in the direction close to the lower mold, driving the alignment mold mechanism as a whole to adjust in the direction close to the lower mold; when the upper mold contacts the lower mold, the adjustment of the alignment mold mechanism is stopped, and the alignment column is slidably adjusted in the direction close to the lower mold and inserted into the alignment hole set in the lower mold; S4. Perform injection molding through an external injection molding tube. After the injection molding is completed, reverse the above steps to move the upper mold away from the lower mold. The industrial camera installed on the carrier plate takes an image of the area where the injection molded product is located to detect whether there is a flash phenomenon. When unqualified injection molded products are detected, an alarm is triggered and the defective products are manually recycled. S5, and so on, repeat S1, S2, S3, S4 in sequence until the system stops working.

9. The alignment self-checking method of the injection molding alignment system according to claim 8, characterized in that: In step S4, the industrial camera provided on the carrier plate takes an image of the area where the injection molded product is located to detect whether there is a flash phenomenon, which specifically includes: S4-1. Select the injection molded product samples with and without flash phenomenon and place them in the lower mold. Use the industrial camera set on the carrier plate to shoot the injection molded product samples and convert the images into grayscale. Grayscale image of the sample; S4-2. Calculate the grayscale mean of injection molded product samples without flash : In the formula, Represents the total number of pixels in the edge area of ​​the image; Indicates the number of pixels with gray value i; i is the gray level; S4-3, dividing the edge of the grayscale image of the injection molded product sample with flash into an image edge area with a predetermined pixel width; S4-4. Irradiate the injection molded product sample with a floodlight source with a color temperature of 6500K and a brightness of 1000 nits. Use an industrial camera to take an image under this condition again. Calculate the grayscale in the edge area of ​​the image less than The probability density of the pixel point : In the formula, Represents the total number of pixels in the edge area of ​​the image; Indicates that the grayscale is less than The number of pixels; S4-5. Irradiate the injection molded product sample with a floodlight source with a color temperature of 6500K and a brightness of 100 nits. Use the industrial camera to take an image under this condition again. Calculate the grayscale in the edge area of ​​the image that is greater than or equal to the threshold. The probability density of the pixel point : S4-6, perform injection molding operation through an external injection molding tube, and move the upper mold away from the lower mold after the injection molding operation is completed; the industrial camera set up in the lower mold takes an image of the area where the injection molded product is located and converts it into a grayscale image. The grayscale image of the injection molded product is segmented into an image edge area with a predetermined pixel width; Detect whether the edge area of ​​the image contains a probability density in the interval [ ] pixels: If included, this pixel or pixel block is defined as the flash area, and unqualified injection molded products are identified and an alarm is issued, and the defective products are manually recycled.

Images