Visual angle detection system for film-coated product

Abstract

The invention discloses a visual angle detection system for a film-coated product, which comprises a detection table base, a camera mounting rod is mounted on the right front side of the upper end surface of the detection table base, a camera assembly is mounted at the top of the camera mounting rod, a reflection assembly is mounted on the left rear side of the detection table base, and the camera assembly is mounted on the left rear side of the detection table base. The transmission assembly is mounted at the bottom of the detection table base, the camera assembly comprises a detection camera and a camera mounting frame, the reflection assembly comprises a reflection mirror and a mirror folding gear, and the transmission assembly comprises a belt motor, a double-belt roller, a camera driving belt, a driving belt pulley, a mirror folding driving belt and a mirror folding amplification driving gear. According to the invention, the comprehensive detection work of the product is completed through the single camera, so that the image acquisition is more centralized and unified, the complexity of a visual analysis detection system is simplified, the mirror arrangement is more flexible, and the system can adapt to a more complex processing and production environment.

Description

Technical Field

[0001] The invention relates to the technical field of film package product detection, and in particular to a visual angle detection system for film package products. Background Art

[0002] After the film-wrapped products are output from the packaging machine, they will be transported to the palletizing section via a conveyor belt for palletizing. During this period, a small number of defective products will be produced due to defects and deformations in the film-wrapping process. In order to prevent a large number of defective products from entering the market, workers will pick out these defective products. However, due to the fast production speed and the lack of precision in manual product inspection, these products will still flow into the market. In order to improve product inspection efficiency, most production lines will use visual systems for analysis.

[0003] However, since the packaging production line is relatively compact and defects may occur on all sides of the membrane-wrapped products, multiple sets of cameras need to be set up to shoot the products for comprehensive inspection. This will not only make the overall production line setting relatively lengthy to meet the shooting requirements of the visual system, but also multiple sets of cameras will make it difficult to centralize and unify image acquisition. The visual analysis and inspection system must be arranged more complexly, but the packaging production line itself is relatively compact. The lengthy and complex visual acquisition system is not inspiring for the membrane-wrapped product production line. Based on the above viewpoints, technical personnel in this field have proposed a visual angle detection system for membrane-wrapped products to solve the above-mentioned problems. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings existing in the prior art and to propose a visual angle detection system for membrane package products. The visual angle detection device for membrane package products completes comprehensive inspection of the product through a single camera, making image acquisition more centralized and unified, simplifying the complexity of the visual analysis and detection system, and the mirror arrangement is more flexible and can adapt to more complex processing and production environments.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The visual angle detection device for film package products comprises a detection platform base, a camera mounting rod is installed at the right front side of the upper end surface of the detection platform base, a camera assembly is installed on the top of the camera mounting rod, a reflection assembly is installed at the left rear side of the detection platform base, and a transmission assembly is installed at the bottom of the detection platform base;

[0007] The camera assembly includes a detection camera and a camera mounting frame, the reflection assembly includes a reflection mirror and a folding mirror gear, and the transmission assembly includes a belt motor, a double belt roller, a camera drive belt, a drive pulley, a folding mirror drive belt and a folding mirror amplification drive gear;

[0008] The camera mounting frame is fixed to the outer side wall of the detection camera, and the camera mounting frame is hinged to the top of the camera mounting rod, the reflector is hinged to the detection platform base through an axle rod, the reflector and the detection camera are diagonally distributed, the folding mirror gear is fixed to the side wall of the reflector, the driving pulley is fixed to the side wall of the camera mounting frame, the double belt roller is fixed to the output end of the belt motor, the camera driving belt is sleeved on the double belt roller and the driving pulley, the folding mirror amplification driving gear is installed at the bottom of the detection platform base, the folding mirror driving belt is sleeved on the double belt roller and the folding mirror amplification driving gear, and the folding mirror amplification driving gear is meshed with the folding mirror gear;

[0009] Through the above technical scheme, the top, left and front sides of the membrane package product are photographed by the detection camera, and the photographed images are then transmitted to the visual processing system for analysis. If the membrane package on the top, left and front sides has no damage, deformation or cracking, the belt motor drives the double belt rollers to rotate, which in turn drives the camera drive belt to rotate, and the drive pulley drives the camera assembly to be slightly lifted. At the same time, the folding mirror drive belt drives the folding mirror amplification drive gear to rotate, and then the folding mirror gear is used to open the reflector, and the reflector is used to reflect the back and right sides of the membrane package product. The device removes the membrane package product through the diagonally arranged reflectors and the detection camera. All surfaces of the bottom are monitored, and when inspecting the top, left and front, the reflector is in the storage state, avoiding the problem of blurred imaging of the detection camera caused by the reflection of the light source by the reflector. When inspecting the back and right sides of the membrane package product, the detection camera is slightly lifted up and the reflector is in an open and closed state. The detection camera is aimed at the reflector to capture the image presented in the reflector and feed it back to the visual processing system for processing. The device completes the comprehensive inspection of the product through a single camera, making image acquisition more centralized and unified, simplifying the complexity of the visual analysis and detection system, and the mirror arrangement is more flexible, which can adapt to more complex processing and production environments.

[0010] Furthermore, the camera assembly further comprises a stroke amplification gear, and the stroke amplification gear is fixed to the other side wall of the camera mounting frame;

[0011] Through the above technical solution, the stroke amplification gear can drive the lighting fixture to rotate downward for storage.

[0012] Further, a lighting assembly is installed on the outer side wall of the camera mounting rod and below the camera assembly, and the lighting assembly includes a lighting fixture, a lighting fixture mounting frame and a transmission gear, the lighting fixture mounting frame is fixed to the outer side wall of the lighting fixture, and the transmission gear is fixed to the front side wall of the lighting fixture mounting frame;

[0013] Through the above technical solution, the lighting fixture provides light source for taking product pictures.

[0014] Furthermore, the stroke amplification gear and the transmission gear are meshed with each other, the lighting fixture is annular, and the lighting fixture and the lens of the detection camera are located on the same axis;

[0015] Through the above technical solution, since the lighting fixture and the detection camera are on the same axis, the detection camera can capture the image of the membrane package product very clearly. When the detection camera is slightly lifted, the lighting fixture is driven by the stroke amplification gear and the transmission gear to rotate downward and be stored, thereby avoiding the problem of the light source of the lighting fixture directly shining on the reflector and causing blurred imaging of the reflector.

[0016] Furthermore, the reflective assembly further comprises a soft light strip, and the soft light strip is embedded in the outer peripheral groove of the reflector;

[0017] Through the above technical solution, a soft light strip is used to illuminate the product, and the light strip is embedded in the groove, so the light source will not directly shine on the mirror surface, thereby improving the mirror imaging effect.

[0018] Further, a flap assembly is installed in the middle position of the detection platform base, and the flap assembly includes a flip plate, a flip motor, a motor connecting gear and a flip gear. The flip motor is installed on the lower side wall of the detection platform base, and the motor connecting gear is fixed on the rotating shaft connected to the flip motor. The flip plate is rotatably connected to the detection platform base, and the flip gear is fixed on both sides of the flip plate. The motor connecting gear and the flip gear are meshed with each other.

[0019] Through the above technical scheme, when no cracks, deformations or other undesirable phenomena are detected on the top, front, back, left and right sides of the membrane package product, the flipping motor drives the motor connecting gear to rotate, thereby driving the flipping plate to rotate and flipping the membrane package product on the flipping plate.

[0020] Further, a movable platform assembly is provided on the upper side wall of the detection platform base, and the movable platform assembly includes a movable conveying platform, a platform driving motor, a platform driving gear and a platform fixed gear plate, the platform driving motor is installed at the bottom of the detection platform base, the platform driving gear is connected to the rotating shaft of the platform driving motor, the movable conveying platform is limitedly slidably connected in a slide groove opened at the top of the detection platform base, the platform fixed gear plate is fixed to the bottom of the movable conveying platform, and the platform fixed gear plate is meshed with the platform driving gear;

[0021] Through the above technical scheme, after the membrane package product is flipped to the movable conveying platform, the platform driving motor slowly rotates in the opposite direction, driving the platform fixed tooth plate and the movable conveying platform connected thereto to move toward the camera assembly until the bottom of the original membrane package product on the rear side of the membrane package product is presented on the reflector, and then the reflector image is photographed by the camera assembly to complete a comprehensive inspection of the membrane package product. After the inspection is completed, the platform driving motor quickly rotates forward to quickly feed the membrane package product to the front conveyor belt. The device can realize a comprehensive inspection of the membrane package product, and the overall size of the inspection device is small, and there is no need to set up multi-component camera components. All sides of the membrane package product can be fully photographed, and the reasonable arrangement of light sources can improve the shooting effect, thereby improving the ability to screen defective products.

[0022] The present invention has the following beneficial effects:

[0023] 1. In the present invention, a single camera is used to complete comprehensive inspection of the product, making image acquisition more centralized and unified, simplifying the complexity of the visual analysis inspection system, and making the mirror arrangement more flexible and adaptable to more complex processing and production environments.

[0024] 2. In the present invention, comprehensive detection of membrane package products is achieved, and the overall size of the detection device is small. There is no need to set up multi-component camera components, and all sides of the membrane package products can be fully photographed. The reasonable arrangement of light sources can improve the shooting effect, thereby improving the ability to screen defective products. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A stereoscopic diagram of a visual angle detection system for a film package product proposed by the present invention;

[0026] Figure 2 A first axonometric diagram of a visual angle detection system for a film package product proposed by the present invention;

[0027] Figure 3 A first bottom schematic diagram of a visual angle detection system for film package products proposed by the present invention;

[0028] Figure 4 for Figure 3 The enlarged schematic diagram of point A in the middle;

[0029] Figure 5 A second axonometric diagram of a visual angle detection system for a film package product proposed by the present invention;

[0030] Figure 6 This is a second bottom schematic diagram of a visual angle detection system for film-wrapped products proposed by the present invention.

[0031] Legend:

[0032] 1. Inspection table base; 2. Camera mounting rod; 3. Camera assembly; 4. Lighting assembly; 5. Reflection assembly; 6. Movable platform assembly; 7. Flip assembly; 8. Transmission assembly;

[0033] 31. Detection camera; 32. Camera mounting bracket; 33. Stroke amplification gear;

[0034] 41. Lighting fixture; 42. Lighting fixture mounting bracket; 43. Transmission gear;

[0035] 51. Reflector; 52. Folding mirror gear; 53. Soft light strip;

[0036] 61. Movable conveying platform; 62. Platform driving motor; 63. Platform driving gear; 64. Platform fixed gear plate;

[0037] 71. Flip plate; 72. Flip motor; 73. Motor connecting gear; 74. Flip gear;

[0038] 81. Belt motor; 82. Double belt roller; 83. Camera drive belt; 84. Drive pulley; 85. Folding mirror drive belt; 86. Folding mirror amplification drive gear. DETAILED DESCRIPTION

[0039] 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.

[0040] Embodiment 1

[0041] Reference Figure 1 An embodiment of the present invention provides: a visual angle detection system for film package products, including a detection platform base 1, a camera mounting rod 2 is installed at the right front side of the upper end surface of the detection platform base 1, a camera assembly 3 is installed on the top of the camera mounting rod 2, and a reflection assembly 5 is installed at the left rear side of the detection platform base 1, and a transmission assembly 8 is installed at the bottom of the detection platform base 1.

[0042] Reference Figure 2 and Figure 3The camera assembly 3 includes a detection camera 31 and a camera mounting frame 32, the reflection assembly 5 includes a reflector 51 and a folding mirror gear 52, the transmission assembly 8 includes a belt motor 81, a double belt roller 82, a camera drive belt 83, a drive pulley 84, a folding mirror drive belt 85 and a folding mirror amplification drive gear 86, the camera mounting frame 32 is fixed to the outer wall of the detection camera 31, and the camera mounting frame 32 is hinged to the top of the camera mounting rod 2, the reflector 51 is hinged to the detection platform base 1 through an axle rod, the reflector 51 and the detection camera 31 are diagonally distributed, the folding mirror gear 52 is fixed on the side wall of the reflector 51, the drive pulley 84 is fixed on the side wall of the camera mounting frame 32, the double belt roller 82 is fixed on the output end of the belt motor 81, and the camera drive belt 83 is sleeved between the double belt roller 82 and the drive belt On the wheel 84, the folding mirror amplification driving gear 86 is installed at the bottom of the detection platform base 1, the folding mirror driving belt 85 is sleeved on the double belt roller 82 and the folding mirror amplification driving gear 86, the folding mirror amplification driving gear 86 is meshed with the folding mirror gear 52, and the top, left and front sides of the membrane package product are photographed by the detection camera 31, and then the photographed picture is transmitted to the visual processing system for analysis. If the membrane package on the top, left and front sides has no damage, deformation or cracking and other adverse conditions, the belt motor 81 drives the double belt roller 82 to rotate, and then drives the camera driving belt 83 to rotate, and uses the driving pulley 84 to drive the camera assembly 3 to be slightly lifted, and at the same time, the folding mirror driving belt 85 drives the folding mirror amplification driving gear 86 to rotate, and then uses the folding mirror gear 52 to open the reflector 51, and uses the reflector 51 to reflect the back and right sides of the membrane package product.

[0043] Reference Figure 2 and Figure 5The camera assembly 3 also includes a stroke amplification gear 33, which is fixed to the other side wall of the camera mounting frame 32. A lighting assembly 4 is installed on the outer side wall of the camera mounting rod 2 and below the camera assembly 3. The lighting assembly 4 includes a lighting fixture 41, a lighting fixture mounting frame 42 and a transmission gear 43. The lighting fixture mounting frame 42 is fixed to the outer side wall of the lighting fixture 41, and the transmission gear 43 is fixed to the front side wall of the lighting fixture mounting frame 42. The stroke amplification gear 33 and the transmission gear 43 are meshed with each other. The lighting fixture 41 is annular and the lighting fixture 41 and the lens of the detection camera 31 are located on the same axis. The lighting fixture 41 is provided for taking product pictures. For light source, since the lighting fixture 41 and the detection camera 31 are on the same axis, the detection camera 31 can clearly capture the image of the membrane package product, and when the detection camera 31 is slightly lifted, the lighting fixture 41 is driven by the stroke amplification gear 33 and the transmission gear 43 to rotate downward and be stored, thereby avoiding the problem that the light source of the lighting fixture 41 directly shines on the reflector 51 and causes blurred imaging of the reflector 51. The reflection component 5 also includes a soft light strip 53, which is embedded in the outer peripheral groove of the reflector 51. The soft light strip 53 is used to illuminate the product, and the light strip is embedded in the groove, so the light source will not directly shine on the mirror surface, thereby improving the mirror imaging effect.

[0044] Embodiment 2

[0045] Reference Figure 1 , Figure 3 and Figure 4 , this embodiment provides another technical solution based on the first embodiment. A flip plate assembly 7 is installed in the middle position of the detection platform base 1. The flip plate assembly 7 includes a flip plate 71, a flip plate motor 72, a motor connecting gear 73 and a flip plate gear 74. The flip plate motor 72 is installed on the lower side wall of the detection platform base 1, and the motor connecting gear 73 is fixed on the rotating shaft connected to the flip plate motor 72. The flip plate 71 is rotatably connected to the detection platform base 1, and the flip plate gear 74 is fixed on both sides of the flip plate 71. The motor connecting gear 73 and the flip plate gear 74 are meshed with each other. When no undesirable phenomena such as cracks and deformation are detected on the top, front, back, left and right sides of the membrane package product, the flip plate motor 72 drives the motor connecting gear 73 to rotate, and then drives the flip plate 71 to rotate, and turns the membrane package product located on the flip plate 71.

[0046] Reference Figure 3 and Figure 6A movable platform assembly 6 is provided on the upper side wall of the detection platform base 1. The movable platform assembly 6 includes a movable conveying platform 61, a platform driving motor 62, a platform driving gear 63 and a platform fixed gear plate 64. The platform driving motor 62 is installed at the bottom of the detection platform base 1. The platform driving gear 63 is connected to the rotating shaft of the platform driving motor 62. The movable conveying platform 61 is limitedly slidably connected in the slide groove opened at the top of the detection platform base 1. The platform fixed gear plate 64 is fixed at the bottom of the movable conveying platform 61. The platform fixed gear plate 64 is meshed with the platform driving gear 63. After the film package product is turned over to the movable conveying platform 61, the platform driving motor 62 slowly rotates in the opposite direction. The platform fixed tooth plate 64 and the movable conveying platform 61 connected thereto are driven to move toward the camera assembly 3 until the bottom of the original membrane package product on the rear side of the membrane package product is presented on the reflector 51, and then the reflector 51 image is photographed by the camera assembly 3 to complete a comprehensive inspection of the membrane package product. After the inspection is completed, the platform driving motor 62 rapidly rotates forward to rapidly deliver the membrane package product to the front conveyor belt. The device can realize a comprehensive inspection of the membrane package product, and the overall size of the inspection device is small, and it is not necessary to set up a multi-component camera component, and all sides of the membrane package product can be fully photographed. The reasonable arrangement of the light source can improve the shooting effect, thereby improving the ability to screen defective products.

[0047] Working principle: The detection camera 31 is used to photograph the top, left and front sides of the membrane package product, and the lighting fixture 41 provides a light source for photographing the product. Since the lighting fixture 41 and the detection camera 31 are on the same axis, the detection camera 31 can clearly capture the image of the membrane package product, and then transmit the captured image to the visual processing system for analysis. If the membrane package on the top, left and front sides has no damage, deformation or cracking, the belt motor 81 drives the double belt roller 82 to rotate, which in turn drives the camera drive belt 83 to rotate, and uses the drive pulley 84 to drive the camera assembly 3 to be slightly lifted. At the same time, the folding mirror drive belt 85 drives the folding mirror amplification drive gear 86 to rotate, and then uses the folding mirror The gear 52 opens the reflector 51. When the detection camera 31 is slightly lifted, the lighting fixture 41 is driven by the stroke amplification gear 33 and the transmission gear 43 to rotate downward and be stored, thereby avoiding the problem that the light source of the lighting fixture 41 is directly irradiated on the reflector 51 and causes the image of the reflector 51 to be blurred. The reflector 51 is used to reflect the back and right sides of the film package product. The device monitors all sides of the film package product except the bottom side through the diagonally arranged reflector 51 and the detection camera 31. When detecting the top, left and front sides, the reflector 51 is in a stored state, thereby avoiding the problem that the reflector 51 refracts the light source and causes the image of the detection camera 31 to be blurred. When detecting the back and right sides of the film package product, the detection camera 31 is slightly lifted. , at the same time, the reflector 51 is in an open and closed state, and the detection camera 31 is aimed at the reflector 51, so as to capture the image presented in the reflector 51 and feed it back to the visual processing system for processing. The device completes the comprehensive detection of the product through a single camera, making the image acquisition more centralized and unified, simplifying the complexity of the visual analysis detection system, and the mirror arrangement is more flexible, which can adapt to more complex processing and production environments. When no undesirable phenomena such as cracks and deformation are detected on the top, front, back, left and right sides of the membrane package product, the flip motor 72 drives the motor connecting gear 73 to rotate, and then drives the flip plate 71 to rotate, and turns over the membrane package product on the flip plate 71. After the membrane package product is turned over to the movable conveying platform 61, the platform The driving motor 62 slowly rotates in the opposite direction, driving the platform fixed tooth plate 64 and the movable conveying platform 61 connected thereto to move toward the camera assembly 3 until the bottom of the original membrane package product on the rear side of the membrane package product is presented on the reflector 51, and then the image of the reflector 51 is photographed by the camera assembly 3 to complete a comprehensive inspection of the membrane package product. After the inspection is completed, the platform driving motor 62 rotates forward rapidly to quickly feed the membrane package product onto the front conveyor belt. The device can realize a comprehensive inspection of the membrane package product, and the overall size of the inspection device is small, and there is no need to set up multi-component camera components. All sides of the membrane package product can be fully photographed, and the reasonable arrangement of light sources can improve the shooting effect, thereby improving the ability to screen defective products.

[0048] 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 visual angle detection system for a film package product, comprising a detection platform base (1), characterized in that: A camera mounting rod (2) is installed at the right front side of the upper end surface of the detection platform base (1), a camera assembly (3) is installed at the top of the camera mounting rod (2), a reflection assembly (5) is installed at the left rear side of the detection platform base (1), and a transmission assembly (8) is installed at the bottom of the detection platform base (1); The camera assembly (3) comprises a detection camera (31) and a camera mounting frame (32); the reflection assembly (5) comprises a reflection mirror (51) and a folding mirror gear (52); the transmission assembly (8) comprises a belt motor (81), a double belt roller (82), a camera drive belt (83), a drive pulley (84), a folding mirror drive belt (85) and a folding mirror amplification drive gear (86); The camera mounting frame (32) is fixed on the outer wall of the detection camera (31), and the camera mounting frame (32) is hinged on the top of the camera mounting rod (2); the reflector (51) is hinged on the detection platform base (1) through an axle rod; the reflector (51) and the detection camera (31) are diagonally distributed; the folding mirror gear (52) is fixed on the side wall of the reflector (51); the driving pulley (84) is fixed on the side wall of the camera mounting frame (32); the double belt roller (82) is fixed on the output end of the belt motor (81); the camera driving belt (83) is sleeved on the double belt roller (82) and the driving pulley (84); the folding mirror amplification driving gear (86) is installed on the bottom of the detection platform base (1); the folding mirror driving belt (85) is sleeved on the double belt roller (82) and the folding mirror amplification driving gear (86); the folding mirror amplification driving gear (86) is meshed with the folding mirror gear (52).

2. A visual angle detection system for film package products according to claim 1, characterized in that: The camera assembly (3) further comprises a stroke amplification gear (33), wherein the stroke amplification gear (33) is fixed to the other side wall of the camera mounting frame (32).

3. A visual angle detection system for film package products according to claim 2, characterized in that: A lighting assembly (4) is installed on the outer side wall of the camera mounting rod (2) and below the camera assembly (3); the lighting assembly (4) comprises a lighting fixture (41), a lighting fixture mounting frame (42) and a transmission gear (43); the lighting fixture mounting frame (42) is fixed to the outer side wall of the lighting fixture (41), and the transmission gear (43) is fixed to the front side wall of the lighting fixture mounting frame (42).

4. A visual angle detection system for film package products according to claim 3, characterized in that: The stroke amplification gear (33) and the transmission gear (43) are meshed with each other, the lighting fixture (41) is annular, and the lighting fixture (41) and the lens of the detection camera (31) are located on the same axis.

5. The visual angle detection system for film package products according to claim 1, characterized in that: The reflective assembly (5) further comprises a soft light strip (53), wherein the soft light strip (53) is embedded in the outer peripheral groove of the reflector (51).

6. A visual angle detection system for film package products according to claim 1, characterized in that: A flap assembly (7) is installed at the middle position of the detection platform base (1), and the flap assembly (7) comprises a flap plate (71), a flap motor (72), a motor connecting gear (73) and a flap gear (74). The flap motor (72) is installed on the lower side wall of the detection platform base (1), the motor connecting gear (73) is fixed on a rotating shaft connected to the flap motor (72), the flap plate (71) is rotatably connected to the detection platform base (1), the flap gear (74) is fixed on both sides of the flap plate (71), and the motor connecting gear (73) and the flap gear (74) are meshed with each other.

7. The visual angle detection system for film package products according to claim 1, characterized in that: The upper side wall of the detection platform base (1) is provided with a movable platform assembly (6), and the movable platform assembly (6) comprises a movable conveying platform (61), a platform driving motor (62), a platform driving gear (63) and a platform fixed gear plate (64). The platform driving motor (62) is installed at the bottom of the detection platform base (1), and the platform driving gear (63) is connected to the rotating shaft of the platform driving motor (62). The movable conveying platform (61) is limitedly slidably connected in a slide groove provided at the top of the detection platform base (1), and the platform fixed gear plate (64) is fixed at the bottom of the movable conveying platform (61), and the platform fixed gear plate (64) is meshed with the platform driving gear (63).

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