A hot pressing forming device for wheel rim film processing and control method thereof

Abstract

The invention discloses a hot pressing forming device for processing a wheel rim film and a control method thereof, and belongs to the technical field of hot pressing forming devices. The hot pressing forming device for processing a wheel rim film comprises a hot pressing device and a material receiving device arranged at one side of the hot pressing device, wherein an upper mold and a lower mold are respectively arranged in the hot pressing device, and a support frame is fixed at one end of the hot pressing device, and a lifting and positioning mechanism is installed at the other end of the hot pressing device, wherein a hydraulic rod connected to the upper mold is fixed at the top of the hot pressing device, and electric heating strips are equidistantly fixed at the top of the lower mold. The hot pressing forming device for processing a wheel rim film forms strip grooves corresponding to the outer side of the tire on the wheel rim film, and the strip grooves on both sides of the wheel rim film are annularly sleeved on the wheel rim, so that the wheel rim film is convenient to be hot pressed to correspond to the wheel rim, thereby improving the hot pressing effect of the wheel rim film.

Description

Technical Field

[0001] The invention belongs to the technical field of hot pressing forming devices, and in particular relates to a hot pressing forming device for wheel rim film processing and a control method thereof. Background Art

[0002] Wheel rim film is a kind of material widely used in tires, and it has good use effect. When processing wheel rim film, it needs to use processing mold to process it.

[0003] The patent with application number 202320301356.3 discloses a hot pressing molding device for polymer film, including a bottom plate, a hot pressing mechanism and a feeding mechanism are installed on the top surface of the bottom plate; a fixed base is installed on the top surface of the bottom plate, the bottom surface of the fixed base is fixedly connected to the top surface of the bottom plate, a groove is opened on the top surface of the fixed base, a heat conductor is installed on the top surface of the inner wall of the groove, and the bottom surface of the heat conductor is fixedly connected to the top surface of the inner wall of the groove. By installing the heat conductor, heat can be conducted to the mold; by installing the mold, the polymer film can be unified in appearance.

[0004] Although the above technical solution utilizes an arc-shaped upper mold and a lower mold to hot-press the film, the film with a cylindrical structure after molding is put on the rim. Since the circumferences of the outer and inner sides of the rim are different, the film on the inner side will be folded, resulting in a poor effect of putting it on the rim. Summary of the invention

[0005] (1) Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a hot press forming device for processing wheel rim film and a control method thereof. The hot press forming device for processing wheel rim film is intended to solve the technical problem that in the prior art, a film with a cylindrical structure after forming is sleeved on the wheel rim, and since the circumferences of the outer and inner sides of the wheel rim are different, the film on the inner side will be folded, resulting in poor sleeve effect on the wheel rim.

[0007] (2) Technical solution

[0008] In order to solve the above technical problems, on the one hand, the present invention provides a hot press molding device for processing wheel rim film, which includes a hot press equipment and a material receiving equipment arranged on one side of the hot press equipment, wherein the hot press equipment is respectively provided with an upper mold and a lower mold, and a support frame is fixed at one end of the hot press equipment, and a lifting and positioning mechanism is installed at the other end of the hot press equipment, wherein a hydraulic rod connected to the upper mold is fixed at the top of the hot press equipment, and electric heating strips are equidistantly fixed at the top of the lower mold.

[0009] When using the technical solution, an upper mold and a lower mold are respectively provided in the hot pressing equipment, and the first clamping plate in the lifting frame on the side wall of the hot pressing equipment clamps and positions the wheel rim film with a cylindrical structure, and after positioning, the hydraulic rod drives the upper mold to extrude downward, so that the electric heating strip at the top of the lower mold performs hot pressing and molding on the wheel rim film, so that a strip groove corresponding to the outer side of the tire is formed on the wheel rim film, and the strip grooves on both sides of the wheel rim film are annularly sleeved on the wheel rim, so that the wheel rim film is conveniently hot pressed to correspond to the wheel rim, thereby improving the hot pressing effect of the wheel rim film; a first electric push rod is installed on the side wall of the lower mold, After hot pressing, the first electric push rod drives the lifting frame to move upward, and separates the wheel rim film from the electric heating strip during the movement, and after separation, the motor is started to drive the lead screw to rotate forward, so that the sliding frame drives the clamping frame to move to one side of the wheel rim film. After the fourth electric push rod drives the second clamping plate to clamp the wheel rim film, the motor drives the lead screw to rotate in the opposite direction to pull the wheel rim film out of the hot pressing equipment, and after pulling it out, the second electric push rod drives the cutting knife to cut the processed wheel rim film, and the cut wheel rim film falls into the storage bin, which is convenient for cutting and storing the wheel rim film after hot pressing, thereby improving the convenience of processing and storing the wheel rim film.

[0010] Preferably, positioning rods slidably inserted in the hot pressing equipment are fixed on both sides of the top surface of the upper mold, and a winding drum is rotatably clamped on the support frame.

[0011] Furthermore, the lifting and positioning mechanism includes a first electric push rod fixed to the side wall of the lower mold and a lifting frame fixed to the first electric push rod, a first clamping plate is embedded in the top of the lifting frame, and a third electric push rod connected to the first clamping plate is fixed to the top of the lifting frame.

[0012] Furthermore, a cutting frame with an L-shaped structure is fixed to the top of the side wall of the lifting frame, a second electric push rod is fixed to the side wall of the cutting frame, and a cutting knife is installed on the second electric push rod.

[0013] Furthermore, a slide groove is provided on one side of the top surface of the material receiving device, and a storage bin is provided on the other side of the top surface of the material receiving device, a lead screw is embedded in the slide groove, and a motor connected to the lead screw is fixed on the outer wall of the material receiving device.

[0014] Furthermore, a sliding frame is installed at the top of the material receiving device, a sliding part which is fitted and inserted in the sliding groove is fixed at the bottom end of the sliding frame, and the lead screw is threadedly inserted in the sliding part.

[0015] Furthermore, a clamping frame is fixed to the side wall of the sliding frame, a second clamping plate is embedded in the clamping frame, and a fourth electric push rod connected to the second clamping plate is fixed to the top end of the clamping plate.

[0016] On the other hand, the present invention provides a control method for a hot pressing forming device for processing a wheel rim film, wherein a camera is provided on the top of one end of the hot pressing device close to the material receiving device, and the camera is used to detect the cutting state of the wheel rim film, and the method comprises:

[0017] After the clamping frame clamps the end of the finished wheel rim film located in the lifting frame, the finished wheel rim film is dragged to the preset cutting position by the sliding frame, during which the dragging condition of the finished wheel rim film is detected in real time by the camera, and in the case of abnormal dragging, the preset operating parameters are adjusted to correct the dragging condition;

[0018] Among them, the dragging condition of the finished wheel rim film is detected in real time by a camera, and when the dragging is abnormal, the preset operating parameters are adjusted, including:

[0019] When the clamping frame reaches the clamping position, the flash light on the camera is activated to obtain a first pattern, and a first local area pattern in the first pattern is captured, where the first local area pattern is a screenshot of the area where the clamping frame is located;

[0020] Converting the first local area pattern into a first grayscale pattern, intercepting a highlight area and a low light area in the first grayscale pattern based on a preset grayscale range threshold, and detecting distribution of the highlight area and the low light area;

[0021] If there is no low-light area, it is determined that the clamping of the clamping frame is abnormal. At this time, the clamping frame reaches the clamping correction waiting position based on the preset retraction displacement, and at the same time, the height of the lifting frame is lowered based on the preset unit downward displacement. Then the clamping frame returns to the clamping position for the second time, and repeats the detection of the distribution of the high-light area and the low-light area;

[0022] If there are highlight areas on both sides of the low-light area, the hot pressing quality of the finished rim film is determined based on the matching degree between the texture features in the highlight areas and the preset rim film texture features.

[0023] Furthermore, the method of determining the hot pressing quality of the finished rim film based on the matching degree between the texture features in the highlight area and the preset rim film texture features includes:

[0024] Sharpening the highlight area to make the outline of the highlight area clearer, and removing part of the highlight area close to the low-light area. The removed area accounts for 20%-30% of the entire highlight area. The removed highlight area is marked as the first sample sampling area.

[0025] Splitting the first sample sampling area into a plurality of sampling sub-areas, and finding at least one high-reflection point in each sampling sub-area based on the grayscale value distribution in each sampling sub-area, wherein the high-reflection point is the center point of the bright block area whose grayscale threshold is greater than the second preset grayscale threshold or the point with the highest brightness;

[0026] Based on the distribution of shadows around the high-reflective points, local texture lines are constructed, and it is detected whether there are similar texture lines in the local texture lines in the preset wheel rim film texture features, and the matching degree between the texture features in the highlight area and the preset wheel rim film texture features is determined based on the matching degree between the local texture lines corresponding to multiple highlight points and the preset wheel rim film texture features, and when the matching degree is greater than the preset matching threshold, it is determined that the hot pressing forming of the finished wheel rim film is qualified;

[0027] If the matching degree between the texture feature in any highlight area and the preset wheel rim film texture feature is lower than the preset matching threshold, it is determined that the hot pressing forming of the wheel rim film finished product is abnormal.

[0028] (3) Beneficial Effects Compared with the prior art, the present invention has the following beneficial effects:

[0029] The present invention provides an upper mold and a lower mold in a hot pressing device, respectively, and a first clamping plate in a lifting frame on a side wall of the hot pressing device clamps and positions the wheel rim film in a cylindrical structure, and after positioning, a hydraulic rod drives the upper mold to extrude downward, so that the electric heating strip at the top of the lower mold performs hot pressing and molding on the wheel rim film, so that a strip groove corresponding to the outer side of the tire is formed on the wheel rim film, and the strip grooves on both sides of the wheel rim film are annularly sleeved on the wheel rim, so that the wheel rim film is conveniently hot pressed to correspond to the wheel rim, thereby improving the hot pressing effect on the wheel rim film;

[0030] By installing a first electric push rod on the side wall of the lower mold, the first electric push rod drives the lifting frame to move upward after hot pressing, and separates the wheel rim film from the electric heating strip during the movement, and after separation, the motor is started to drive the lead screw to rotate forward, so that the sliding frame drives the clamping frame to move to one side of the wheel rim film, and after the fourth electric push rod drives the second clamping plate to clamp the wheel rim film, the motor drives the lead screw to rotate in the opposite direction to pull the wheel rim film out of the hot pressing equipment, and after pulling it out, the second electric push rod drives the cutting knife to cut the processed wheel rim film, and the cut wheel rim film falls into the storage bin, which is convenient for cutting and storing the wheel rim film after hot pressing, thereby improving the convenience of processing and storing the wheel rim film. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 It is a structural schematic diagram of the present invention;

[0033] Figure 2 It is a structural schematic diagram of the lifting frame in the present invention;

[0034] Figure 3 It is a structural schematic diagram of the clamping frame in the present invention;

[0035] Figure 4 For the present invention Figure 1 A magnified schematic diagram of the structure in the middle.

[0036] The markings in the attached drawings are: 1. hot pressing equipment; 2. lower mold; 3. electric heating strip; 4. first electric push rod; 5. storage bin; 6. material receiving equipment; 7. lead screw; 8. motor; 9. slide; 10. sliding frame; 11. clamping frame; 12. lifting frame; 13. upper mold; 14. positioning rod; 15. hydraulic rod; 16. winding drum; 17. supporting frame; 18. cutting knife; 19. second electric push rod; 20. cutting frame; 21. third electric push rod; 22. first clamping plate; 23. fourth electric push rod; 24. second clamping plate; 25. sliding part. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Embodiment 1: This specific embodiment is a hot pressing forming device for wheel rim film processing, and its structural schematic diagram is as follows Figure 1 and Figure 2 As shown, the hot pressing forming device for processing the wheel rim film includes a hot pressing device 1 and a material receiving device 6 arranged on one side of the hot pressing device 1, wherein an upper mold 13 and a lower mold 2 are respectively arranged in the hot pressing device 1, and a support frame 17 is fixed at one end of the hot pressing device 1, and a lifting and positioning mechanism is installed at the other end of the hot pressing device 1, wherein a hydraulic rod 15 connected to the upper mold 13 is fixed at the top end of the hot pressing device 1, and electric heating strips 3 are equidistantly fixed at the top end of the lower mold 2.

[0039] Both sides of the top surface of the upper mold 13 are fixed with positioning rods 14 that are slidably inserted in the hot pressing equipment 1, and a winding drum 16 is rotatably clamped on the support frame 17. The lifting and positioning mechanism includes a first electric push rod 4 fixed to the side wall of the lower mold 2 and a lifting frame 12 fixed on the first electric push rod 4. A first clamping plate 22 is embedded in the top of the lifting frame 12, and a third electric push rod 21 connected to the first clamping plate 22 is fixed to the top of the lifting frame 12. The first clamping plate 22 in the lifting frame 12 on the side wall of the hot pressing equipment 1 clamps and positions the rim film with a cylindrical structure, and after positioning, the hydraulic rod 15 drives the upper mold 13 to squeeze downward, so that the electric heating strip 3 at the top of the lower mold 2 performs hot pressing on the rim film, so that a strip groove corresponding to the outer side of the tire is formed on the rim film, and the strip grooves on both sides of the rim film are annularly sleeved on the rim, which is convenient for hot pressing the rim film to correspond to the rim, thereby improving the hot pressing effect of the rim film.

[0040] like Figure 3 and Figure 4 As shown, a cutting frame 20 with an L-shaped structure is fixed to the top of the side wall of the lifting frame 12, a second electric push rod 19 is fixed to the side wall of the cutting frame 20, a cutting knife 18 is installed on the second electric push rod 19, a slide groove 9 is opened on one side of the top surface of the material receiving device 6, and a storage bin 5 is opened on the other side of the top surface of the material receiving device 6, a lead screw 7 is embedded in the slide groove 9, wherein a motor 8 connected to the lead screw 7 is fixed to the outer wall of the material receiving device 6, a sliding frame 10 is installed on the top of the material receiving device 6, a sliding part 25 that fits in the slide groove 9 is fixed to the bottom end of the sliding frame 10, the lead screw 7 is threadedly inserted in the sliding part 25, a clamping frame 11 is fixed to the side wall of the sliding frame 10, and a clamping frame 11 is embedded in the clamping frame 11 A second clamping plate 24 is installed, and a fourth electric push rod 23 connected to the second clamping plate 24 is fixed on the top of the clamping plate. After hot pressing, the first electric push rod 4 drives the lifting frame 12 to move upward, and separates the rim film from the electric heating strip 3 during the movement, and after separation, the motor 8 is started to drive the screw 7 to rotate forward, so that the sliding frame 10 drives the clamping frame 11 to move to one side of the rim film. After the fourth electric push rod 23 drives the second clamping plate 24 to clamp the rim film, the motor 8 drives the screw 7 to rotate in the opposite direction to pull the rim film out of the hot pressing equipment 1, and after pulling it out, the second electric push rod 19 drives the cutting knife 18 to cut the processed rim film, and the cut rim film falls into the storage bin.

[0041] Working principle: When the device of the present technical solution is used, the first clamping plate 22 in the lifting frame 12 on the side wall of the hot pressing equipment 1 clamps and positions the rim film with a cylindrical structure, and after positioning, the hydraulic rod 15 drives the upper mold 13 to squeeze downward, so that the electric heating strip 3 at the top of the lower mold 2 performs hot pressing molding on the rim film, so that a strip groove corresponding to the outer side of the tire is formed on the rim film, and the strip grooves on both sides of the rim film are annularly sleeved on the rim. After hot pressing, the first electric push rod 4 drives the lifting frame 12 to move upward, and in the process of moving, the rim film and the electric heating strip 3 are pressed together. The hot strips 3 are separated, and after separation, the motor 8 is started to drive the screw 7 to rotate forward, so that the sliding frame 10 drives the clamping frame 11 to move to one side of the rim film. After the fourth electric push rod 23 drives the second clamping plate 24 to clamp the rim film, the motor 8 drives the screw 7 to rotate in the opposite direction to pull the rim film out of the hot pressing equipment 1, and after pulling it out, the second electric push rod 19 drives the cutting knife 18 to cut the processed rim film, and the cut rim film falls into the storage bin, which is convenient for cutting and storing the rim film after hot pressing, thereby improving the convenience of processing and storing the rim film.

[0042] Example 2: Before explaining the control method, it is necessary to explain the abnormal phenomena in the operation of the current equipment, so as to facilitate the understanding of the control method. Referring to the explanation of the working principle in Example 1, after the hot pressing molding device for processing the rim film performs hot pressing molding on the rim film, one end of the rim film will be demolded under the upward traction of the lifting frame 12. After the processing is completed, the lifting frame 12 returns to its initial position. In this process, there is a certain error in the upper and lower positions of the rim film at one end of the lifting frame 12, which leads to the clamping frame 11 has an abnormal situation that it cannot be clamped. In this embodiment, a camera is arranged on the top of one end of the hot pressing equipment 1 close to the material receiving equipment 6 to detect the clamping state of the clamping frame 11 and the end of the rim film. Since the camera is arranged above the clamping frame 11, the clamping position of the lifting frame 12 will be slightly higher than the clamping position of the clamping frame 11 during actual operation, thereby preventing the end of the rim film from being located below the clamping frame 11 as much as possible, thereby preventing the misjudgment of image detection, and ensuring as much as possible that even if the clamping is abnormal, the end of the rim film is located above the clamping frame 11.

[0043] Secondly, the determination of clamping abnormality is based on the pattern captured by the camera in the flashing state. In the flashing state, the wheel rim film (plastic film) will have obvious reflection, while the clamping end of the clamping frame 11 will not have obvious reflection. Therefore, in the undesired detection, it is only necessary to determine the distribution of the reflective area and the non-reflective area. Since the width of the wheel rim film is significantly larger than the width of the clamping end of the clamping frame 11, under normal clamping conditions, two high-reflection areas and one low-reflection area will appear in the corresponding clamping area in the captured pattern, and the two high-reflection areas are located on both sides of the low-reflection area; if the clamping is abnormal, a whole piece of high-light area will appear (the wheel rim film is located above the clamping frame 11, and the clamping frame 11 cannot clamp the wheel rim film). The specific implementation of the above principle is as follows:

[0044] This embodiment is based on Embodiment 1 and is used to provide a control method for a hot pressing forming device for processing a wheel rim film. A camera is provided on the top of one end of the hot pressing device 1 close to the material receiving device 6. The camera is used to detect the cutting state of the wheel rim film. The method includes:

[0045] After the clamping frame 11 clamps the end of the finished wheel rim film in the lifting frame 12, the finished wheel rim film is dragged to the preset cutting position by the sliding frame 10, during which the dragging condition of the finished wheel rim film is detected in real time by the camera, and in the case of abnormal dragging, the preset operating parameters are adjusted to correct the dragging state;

[0046] Among them, the dragging condition of the finished wheel rim film is detected in real time by a camera, and when the dragging is abnormal, the preset operating parameters are adjusted, including:

[0047] When the clamping frame 11 reaches the clamping position, the flash light on the camera is activated to obtain a first pattern, and a first local area pattern in the first pattern is captured, where the first local area pattern is a screenshot of the area where the clamping frame 11 is located;

[0048] Converting the first local area pattern into a first grayscale pattern, intercepting a highlight area and a low light area in the first grayscale pattern based on a preset grayscale range threshold, and detecting distribution of the highlight area and the low light area;

[0049] If there is no low-light area, it is determined that the clamping of the clamping frame 11 is abnormal. At this time, the clamping frame 11 reaches the clamping correction waiting position based on the preset retraction displacement, and at the same time, the height of the lifting frame 12 is lowered based on the preset unit downward displacement. Then, the clamping frame 11 returns to the clamping position for the second time, and the detection of the distribution of the high-light area and the low-light area is repeated;

[0050] If there are highlight areas on both sides of the low-light area, the hot pressing quality of the finished rim film is determined based on the matching degree between the texture features in the highlight areas and the preset rim film texture features.

[0051] Secondly, in the present embodiment, as the wheel rim film coil to be formed on the take-up drum 16 is in the process of hot pressing, the wheel rim film coil to be formed will gradually become less, while the dragging operation parameters of the clamping frame are always maintained, which will result in the gradual consumption of the wheel rim film coil to be formed, and its rotational inertia will gradually decrease. In this process, there may be excessive pulling of the clamping frame 11, which will result in the wheel rim film coil to be formed not being placed between the lower mold 2 and the upper mold 13 according to the preset placement requirements. Specifically, in the actual production process, the above-mentioned abnormality is characterized by abnormal displacement of the tail of the wheel rim film stamping section (i.e., excessive placement of the take-up drum 16). The tail of the rim film stamping section is separated from the pressing surface of the lower mold 2 and the upper mold 13, and the corresponding rim texture is not generated on its surface. After the tail of the abnormal rim film stamping section reaches the lifting frame 12 along the processing flow, the hot pressing forming texture of the clamping end of the rim film is detected after being supported by the clamping frame 11. If the hot pressing forming texture is abnormal (the rim film is blank and has no texture or the texture shape is quite different from the preset rim texture), it is determined that the tension of the winding drum and the running speed of the sliding frame 10 are abnormally matched, and manual intervention is required for correction.

[0052] The specific implementation of the above detection method is as follows:

[0053] The hot pressing quality of the finished rim film is determined based on the matching degree between the texture features in the highlight area and the preset rim film texture features, including:

[0054] Sharpening the highlight area to make the outline of the highlight area clearer, and removing part of the highlight area close to the low-light area. The removed area accounts for 20%-30% of the entire highlight area. The removed highlight area is marked as the first sample sampling area.

[0055] The first sample sampling area is divided into a plurality of sampling sub-areas, and based on the gray value distribution in each sampling sub-area, at least one high-reflection point is found in each sampling sub-area, where the high-reflection point is the center point of the bright block area whose gray value threshold is greater than the second preset gray value threshold or the point with the highest brightness;

[0056] Based on the distribution of shadows around the high-reflective points, local texture lines are constructed, and it is detected whether there are similar texture lines in the local texture lines in the preset wheel rim film texture features, and the matching degree between the texture features in the highlight area and the preset wheel rim film texture features is determined based on the matching degree between the local texture lines corresponding to multiple highlight points and the preset wheel rim film texture features, and when the matching degree is greater than the preset matching threshold, it is determined that the hot pressing forming of the finished wheel rim film is qualified;

[0057] If the degree of match between the texture features in any highlight area and the preset rim film texture features is lower than the preset matching threshold, it is determined that the hot pressing forming of the rim film finished product is abnormal.

[0058] All technical features in this embodiment can be freely combined according to actual needs.

[0059] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A control method for a hot pressing forming device for wheel rim film processing, characterized in that: The hot pressing forming device for processing a wheel rim film comprises a hot pressing device (1) and a material receiving device (6) arranged on one side of the hot pressing device (1), wherein an upper mold (13) and a lower mold (2) are respectively arranged in the hot pressing device (1), and a support frame (17) is fixed at one end of the hot pressing device (1), and a lifting and positioning mechanism is installed at the other end of the hot pressing device (1), wherein a hydraulic rod (15) connected to the upper mold (13) is fixed at the top end of the hot pressing device (1), and electric heating strips (3) are fixed at equal distances at the top end of the lower mold (2), and the lifting and positioning mechanism comprises a first electric push rod (4) fixed to the side wall of the lower mold (2) and a lifting frame (12) fixed to the first electric push rod (4), a first clamping plate (22) is embedded at the top end of the lifting frame (12), and a third electric push rod (21) connected to the first clamping plate (22) is fixed at the top end of the lifting frame (12); A slide groove (9) is provided on one side of the top surface of the material receiving device (6), and a storage bin (5) is provided on the other side of the top surface of the material receiving device (6), a lead screw (7) is embedded in the slide groove (9), a motor (8) connected to the lead screw (7) is fixed to the outer wall of the material receiving device (6), a sliding frame (10) is installed at the top of the material receiving device (6), a sliding portion (25) which is fitted and inserted in the slide groove (9) is fixed at the bottom end of the sliding frame (10), the lead screw (7) is threadedly inserted in the sliding portion (25), a clamping frame (11) is fixed to the side wall of the sliding frame (10), a second clamping plate (24) is embedded in the clamping frame (11), and a fourth electric push rod (23) connected to the second clamping plate (24) is fixed to the top of the clamping plate; The clamping position of the lifting frame (12) is higher than the clamping position of the clamping frame (11), a camera is provided on the top of one end of the hot pressing device (1) close to the material receiving device (6), and the camera is used to detect the cutting state of the wheel rim film. The control method comprises: After the clamping frame (11) clamps the end of the finished wheel rim film located in the lifting frame (12), the finished wheel rim film is dragged to a preset cutting position by the sliding frame (10), during which the dragging condition of the finished wheel rim film is detected in real time by a camera, and in the event of abnormal dragging, preset operating parameters are adjusted to correct the dragging condition; Among them, the dragging condition of the finished wheel rim film is detected in real time by a camera, and when the dragging is abnormal, the preset operating parameters are adjusted, including: When the clamping frame (11) reaches the clamping position, a flash light on the camera is activated to obtain a first pattern, and a first local area pattern in the first pattern is captured, wherein the first local area pattern is a screenshot of the area where the clamping frame (11) is located; Converting the first local area pattern into a first grayscale pattern, intercepting a highlight area and a low light area in the first grayscale pattern based on a preset grayscale range threshold, and detecting distribution of the highlight area and the low light area; If there is no low-light area, it is determined that the clamping of the clamping frame (11) is abnormal, and the clamping frame (11) reaches the clamping correction waiting position based on a preset retracting displacement, and at the same time, the height of the lifting frame (12) is lowered based on a preset unit downward displacement, and then the clamping frame (11) returns to the clamping position for a second time, and the detection of the distribution of the high-light area and the low-light area is repeated; If there are highlight areas on both sides of the low light area, the hot pressing quality of the finished rim film is determined based on the matching degree between the texture features in the highlight areas and the preset texture features of the rim film; Secondly, the hot pressing molding quality of the finished rim film based on the matching degree between the texture features in the highlight area and the preset rim film texture features comprises: Sharpening the highlight area to make the outline of the highlight area clearer, and removing part of the highlight area close to the low-light area. The removed area accounts for 20%-30% of the entire highlight area. The removed highlight area is marked as the first sample sampling area. Splitting the first sample sampling area into a plurality of sampling sub-areas, and finding at least one high-reflection point in each sampling sub-area based on the grayscale value distribution in each sampling sub-area, wherein the high-reflection point is the center point of the bright block area whose grayscale threshold is greater than the second preset grayscale threshold or the point with the highest brightness; Based on the distribution of shadows around the high-reflective points, local texture lines are constructed, and it is detected whether there are similar texture lines in the local texture lines in the preset wheel rim film texture features, and the matching degree between the texture features in the highlight area and the preset wheel rim film texture features is determined based on the matching degree between the local texture lines corresponding to multiple highlight points and the preset wheel rim film texture features, and when the matching degree is greater than the preset matching threshold, it is determined that the hot pressing forming of the finished wheel rim film is qualified; If the degree of match between the texture features in any highlight area and the preset rim film texture features is lower than the preset matching threshold, it is determined that the hot pressing forming of the rim film finished product is abnormal.

2. The control method of a rim film processing hot pressing forming device according to claim 1, characterized in that: Positioning rods (14) that are slidably inserted into the hot pressing device (1) are fixed to both sides of the top surface of the upper mold (13), and a winding drum (16) is rotatably clamped on the support frame (17).

3. The control method of a rim film processing hot pressing forming device according to claim 1, characterized in that: A cutting frame (20) with an L-shaped structure is fixed to the top end of the side wall of the lifting frame (12), a second electric push rod (19) is fixed to the side wall of the cutting frame (20), and a cutting knife (18) is installed on the second electric push rod (19).

Images