Product conveying device and product gluing system

Abstract

The utility model relates to the technical field of production and assembly equipment, and discloses a product conveying device and a product gluing system. The product conveying device comprises a conveying mechanism and a clamping module; the clamping module is arranged on the conveying mechanism, and the conveying mechanism is used for driving the clamping module to sequentially pass through the feeding station, the gluing station and the discharging station; the clamping module is obliquely arranged on the conveying mechanism and provided with a clamping mechanism used for clamping products, and an inclined included angle is formed between the upper surface of the clamping module and the horizontal plane. According to the product conveying device, the occupied space on the horizontal plane can be reduced, and the compactness of the whole device is improved. And moreover, the inclined arrangement can be used for quickly positioning and clamping by utilizing the dead weight of the product, and meanwhile, the inclined arrangement can reduce the feeding and discharging height, and accords with the ergonomic principle, so that the feeding convenience can be improved.

Description

Technical Field

[0001] The present application belongs to the technical field of production and assembly equipment, and specifically relates to a product conveying device and a product gluing system. Background Art

[0002] In the production and assembly of construction machinery, commercial vehicles, and passenger cars, the installation of glass requires gluing before assembly. Therefore, an automatic gluing system is required to apply glue to the glass to be assembled.

[0003] The existing technology is to place the glass on the conveyor line, manually complete the primer on the glass on the rotating table, and then the conveyor line transports the glass to the corresponding clamping module and sends it horizontally to the gluing station. The positioning pillars on all sides are driven by the motor to clamp and align the glass in the center. After the glass is positioned, the glass is in a horizontal position and is automatically glued by the gluing device. After the gluing is completed, the glass is transported along the conveyor line to the unloading station.

[0004] In the existing automatic gluing system with a conveying line + centering positioning, the clamping module is arranged horizontally to convey the glass horizontally. When the size of the glass is large, the glass needs to occupy a larger space. Therefore, in order to meet the normal conveying of large-size glass, there needs to be enough space between the two adjacent workstations to accommodate the large-size glass, resulting in the entire gluing system layout being not compact enough and occupying a large area. In addition, the glass is clamped horizontally, and loading and unloading require higher technical requirements, making manual operation more difficult. Utility Model Content

[0005] The purpose of this application is to provide a product conveying device and a product gluing system, which are used to solve the problems of unreasonable overall layout in the existing gluing system, which leads to the gluing system being not compact enough and occupying a large area, and the horizontal layout leading to inconvenient operation.

[0006] In order to achieve the above objectives, the present application provides a product delivery device, comprising:

[0007] The conveying mechanism is equipped with a loading station, a gluing station and an unloading station along the conveying direction;

[0008] A clamping module is provided on the conveying mechanism, and the conveying mechanism is used to drive the clamping module to pass through the loading station, the gluing station and the unloading station in sequence;

[0009] The clamping module is tiltedly arranged on the conveying mechanism and is provided with a clamping mechanism for clamping products, and an inclined angle is formed between the upper surface of the clamping module and the horizontal plane.

[0010] As a further improvement of the above technical solution:

[0011] In some embodiments, the conveying mechanism is a rotary conveying mechanism, and the loading station, the gluing station, and the unloading station are circumferentially distributed around the rotation center of the conveying mechanism;

[0012] The conveying mechanism has a plurality of clamping modules arranged at intervals around its rotation center. In some embodiments, the clamping mechanisms provided on at least two of the clamping modules have different clamping modes.

[0013] In some embodiments, the plurality of clamping modules include a first clamping module, a second clamping module, and a third clamping module;

[0014] Among them, the clamping mechanism provided on the first clamping module is a fixed limit clamping structure; the clamping mechanism provided on the second clamping module is a fixed stroke clamping structure; and the clamping mechanism provided on the third clamping module is a controllable stroke clamping structure.

[0015] In some embodiments, the fixed limiting clamping structure includes a plurality of fixed limiting columns, and the plurality of fixed limiting columns are distributed on the surface of the first clamping module;

[0016] The fixed stroke clamping structure includes a plurality of clamping cylinders or clamping oil cylinders, and the clamping cylinders or the clamping oil cylinders are arranged in a counter-positioned manner on the second clamping module;

[0017] The controllable stroke clamping structure includes a clamping electric cylinder.

[0018] The second aspect of the present application provides a product gluing system, comprising a gluing device and a product conveying device provided according to the first aspect above, wherein the gluing device is arranged corresponding to the gluing station and is used to perform gluing operations on the product on the clamping module.

[0019] As a further improvement of the above technical solution:

[0020] In some embodiments, a plurality of the product conveying devices are provided, and the plurality of the product conveying devices are arranged around the glue coating device.

[0021] In some embodiments, the product gluing system further includes a feeding assist device, which is arranged corresponding to the feeding station and is used to suck the product for feeding.

[0022] In some embodiments, the product gluing system further includes a blanking device, which is arranged corresponding to the blanking station and is used to suck the glued product for blanking.

[0023] In some embodiments, the blanking device comprises:

[0024] The unloading frame is set on the foundation;

[0025] A discharge arm is rotatably mounted on the discharge frame, and a vacuum suction cup module for adsorbing products is provided at the end of the discharge arm;

[0026] The turning drive mechanism is arranged on the blanking machine frame and is in driving connection with the blanking arm, and is used for driving the blanking arm to turn and blank in a vertical plane.

[0027] Compared to the prior art, the present application provides a product conveying device and a product gluing system. Among them, the product conveying device is configured by arranging a clamping module on the conveying mechanism to clamp the product to be glued through the clamping mechanism on the clamping module, and then the conveying mechanism drives the clamping module to pass through the loading station, gluing station and unloading station in sequence. Since the clamping module is arranged at an angle, the product can utilize the vertical space after being clamped on the clamping module, thereby reducing the space occupied on the horizontal plane and improving the compactness of the entire device. In addition, the inclined arrangement can utilize the weight of the product for rapid positioning and clamping. At the same time, the inclined arrangement can reduce the height of loading and unloading, which is in line with ergonomic principles, thereby improving the convenience of loading.

[0028] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present application, but do not constitute a limitation on the embodiments of the present application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without inventive work. In the drawings:

[0030] Figure 1 A schematic diagram of the three-dimensional structure of a product gluing system provided in an embodiment of the present application;

[0031] Figure 2 for Figure 1 A top view of the partial structure of the gluing system of the product shown;

[0032] Figure 3 A top view of a product conveying device in a product gluing system provided in an embodiment of the present application;

[0033] Figure 4 Schematic diagram of a clamping module (a1) with a fixed position limiting clamping method in a product conveying device provided in an embodiment of the present application and the clamping module clamping two types of products (a2) and (a3);

[0034] Figure 5 A schematic diagram of another fixed position limiting clamping method of a clamping module in a product conveying device provided in an embodiment of the present application, which adopts partitioned clamping of products;

[0035] Figure 6 This is a schematic diagram of a clamping module (b1) with a controllable stroke clamping method in a product conveying device provided in an embodiment of the present application and the clamping module clamping four types of products (b2) to (b5).

[0036] Description of Reference Numerals

[0037] 10. Loading station; 20. Gluing station; 30. Unloading station; 40. Glue cleaning station;

[0038] 100, product conveying device; 110, conveying mechanism; 120, clamping module; 121, first clamping module; 122, third clamping module;

[0039] 200, glue coating device;

[0040] 300. Loading assist equipment;

[0041] 400, unloading device;

[0042] 500, safety fence; 510, safety door;

[0043] 600, double pump glue supply system;

[0044] 700. Gear pump. DETAILED DESCRIPTION

[0045] The following describes the specific embodiments of the present application in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present application and are not intended to limit the present application.

[0046] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with exemplary embodiments.

[0047] Example 1

[0048] See also Figure 1 、 Figure 2 and Figure 3 This embodiment provides a product conveying device 100, and more particularly, relates to a vehicle glass conveying device, wherein the processed product may be glass.

[0049] In this embodiment, the product conveying device 100 includes a conveying mechanism 110 and a plurality of clamping modules 120. The conveying mechanism 110 is arranged on a foundation. The conveying mechanism 110 can be a linear conveying mechanism, and a loading station 10, a gluing station 20, and an unloading station 30 are arranged along the linear conveying direction of the conveying mechanism 110.

[0050] In this embodiment, the conveying mechanism 110 is a rotary conveying mechanism, that is, the conveying direction is the circumferential direction of rotation. In this way, the loading station 10, the gluing station 20 and the unloading station 30 are distributed circumferentially around the rotation center of the conveying mechanism 110.

[0051] Multiple clamping modules 120 are distributed around the rotation center of the conveyor mechanism 110 and are installed on the conveyor mechanism 110. Each clamping module 120 is equipped with a clamping mechanism for clamping products. The conveyor mechanism 110 is used to drive the clamping modules 120 to rotate intermittently around the rotation center, so that each clamping module 120 can pass through the loading station 10, the gluing station 20, and the unloading station 30.

[0052] In this way, the product is first loaded onto the clamping module 120 located at the loading station 10, and then the conveying mechanism 110 drives the clamping module 120 to rotate to a preset angle to the gluing station 20. The gluing operation is performed by the gluing device 200 set at the gluing station 20 or manually. After the gluing is completed, the conveying mechanism 110 drives the clamping module 120 to rotate to a preset angle to the unloading station 30, and then the glued product is unloaded and assembled onto the product. After that, the unloaded clamping module 120 is driven by the conveying mechanism 110 to rotate to the loading station 10 to wait for loading, and the rotary cycle conveying is performed in this way.

[0053] It can be understood that the spacing angles between the loading station 10 , the gluing station 20 and the unloading station 30 depend on the size of the product to be glued.

[0054] In some embodiments, a temporary storage station can be set between the loading station 10, the gluing station 20 and the unloading station 30 to adapt to the gluing rhythm of products of different specifications.

[0055] Furthermore, to ensure continuous and efficient production, the number of clamping modules 120 should be greater than or equal to the number of workstations. That is, in this embodiment, there are three workstations: the loading station 10, the gluing station 20, and the unloading station 30. Therefore, the number of clamping modules 120 should be greater than or equal to three. This reduces waiting time at the gluing station 20 and the unloading station 30, ensuring continuous and efficient production.

[0056] Thus, the product conveying device 100 provided in this embodiment uses a conveying mechanism 110 to drive a clamping module 120 for rotational feeding. Multiple clamping modules 120 are also circumferentially distributed around the rotation center of the conveying mechanism 110. This allows the space between two adjacent workstations to accommodate a wider range of product sizes, improving space utilization. This rationally arranges the spacing between two adjacent workstations, making the entire device more compact.

[0057] In some embodiments, the conveying mechanism 110 may include a motor and a turntable body, wherein the motor directly drives the turntable body to perform intermittent rotation. The motor may be a stepper motor or a servo motor, and an angle sensor may be added to control the rotation angle of the motor.

[0058] Furthermore, a transmission mechanism may be provided between the motor and the turntable body. The motor and the transmission mechanism are in transmission connection, and the transmission mechanism then drives the turntable body to rotate. The transmission mechanism may be a gear transmission mechanism, a ratchet transmission mechanism, a sprocket transmission mechanism, a belt transmission mechanism, or a worm gear transmission mechanism. It should be understood that the above is merely illustrative and does not limit the scope of protection of this application.

[0059] In this embodiment, when the product conveying device 100 is applied to an automobile production system, the glass sizes on the vehicles vary. For large-sized glass, such as front and rear windshields, if the clamping module 120 is arranged horizontally and the glass is clamped and transported horizontally, the glass will obviously occupy more horizontal space to prevent interference between adjacent workstations after clamping and to prevent the glass from being affected by its size.

[0060] To further enhance the compactness of the product conveying device 100, in this embodiment, the clamping module 120 is tilted relative to the conveying mechanism 110, forming an angle between the upper surface of the clamping module 120 and the horizontal plane. This tilted arrangement allows the glass to utilize vertical space after being clamped therein, thereby reducing the space occupied on the horizontal plane. This allows the angle between adjacent workstations to be set smaller, making the entire product conveying device 100 more compact. Furthermore, the tilted arrangement allows for rapid positioning and clamping by utilizing the weight of the glass. It also reduces the height required for loading and unloading, conforming to ergonomic principles and improving loading convenience.

[0061] In some embodiments, the inclined angle formed between the upper surface of the clamping module 120 and the horizontal plane is an acute angle, which ensures that the glass is stable and does not fall after being clamped.

[0062] In other embodiments, the inclined angle formed between the upper surface of the clamping module 120 and the horizontal plane is greater than 0° and less than or equal to 45°.

[0063] In some other embodiments, the inclined angle formed between the upper surface of the clamping module 120 and the horizontal plane is 10° to 25°.

[0064] Alternatively, the tilt angle formed between the upper surface of the disk and the horizontal plane may be 10°, 11°, 11.5°, 12°, 12.7°, 13°, 13.4°, 13.9°, 15°, 16°, 17.4°, 18°, 18.5°, 19°, 20°, 21°, 22.1°, 22.8°, 23°, 23.5°, 24°, or 24.6°. It should be understood that the above is merely an example and is not intended to limit the scope of protection of this application.

[0065] Example 2

[0066] See also Figure 1 、 Figure 2 and Figure 3 This embodiment provides a product conveying device 100. This embodiment is an improvement made on the technical basis of the above-mentioned embodiment 1 or embodiment 2. Compared with the above-mentioned embodiment 1 or embodiment 2, the difference is that:

[0067] In this embodiment, in order to more clearly describe the technical solution of the present application, the number of clamping modules 120 is consistent with the loading station 10, the gluing station 20 and the unloading station 30, that is, the multiple clamping modules 120 include a first clamping module 121, a second clamping module 120 (not shown) and a third clamping module 122.

[0068] In some embodiments, the first clamping module 121 , the second clamping module 120 , and the third clamping module 122 may be provided with clamping mechanisms with the same clamping method to clamp products of the same type with similar shapes.

[0069] In other embodiments, the clamping methods of the clamping mechanisms provided on at least two of the first clamping module 121, the second clamping module 120, and the third clamping module 122 are different (eg, Figure 3 shown).

[0070] In this embodiment, in order to improve the versatility of the product conveying device 100, the same product conveying device 100 can clamp products of various types and specifications. Therefore, the clamping methods of the clamping mechanisms set on the first clamping module 121, the second clamping module 120 and the third clamping module 122 are all different.

[0071] Specifically, the clamping mechanism provided on the first clamping module 121 is a fixed limit clamping structure; the clamping mechanism provided on the second clamping module 120 is a fixed stroke clamping structure; and the clamping mechanism provided on the third clamping module 122 is a controllable stroke clamping structure.

[0072] Specifically, the fixed limit clamping structure includes a plurality of fixed limit columns, which are distributed on the surface of the first clamping module 121 and are used to fix and clamp the product; the fixed stroke clamping structure includes a plurality of clamping cylinders or clamping oil cylinders, which are arranged in a counter-positioned manner on the second clamping module 120 and are used to clamp the relative and parallel sides of the product; the controllable stroke clamping structure includes a clamping electric cylinder, the stroke of which can be controlled by starting and stopping the motor, and is used to clamp the relative and parallel sides of the product.

[0073] As you can understand, fixed-limit clamping structures are generally suitable for clamping irregularly shaped products. In fixed-stroke clamping structures, the extension stroke of the clamping cylinder or hydraulic cylinder is fixed, making it suitable for clamping products with uniform spacing between opposing sides. In controllable-stroke clamping structures, the stroke of the clamping cylinder is controllable, making it suitable for clamping products with inconsistent spacing between opposing sides.

[0074] In order to ensure the continuity of the product conveying device 100, the product should be loaded with the corresponding clamping method of the clamping module 120. In this way, the selection rules of the clamping method of the clamping module 120 are as follows:

[0075] 1. For triangular or irregular polygonal products, select the first clamping module 121 with a fixed limit column clamping structure;

[0076] 2. For quadrilateral or polygonal products with regular shapes, if the spacing between the shared clamping edges is consistent, select the second clamping module 120 with a fixed stroke clamping structure;

[0077] 3. For quadrilateral or regularly shaped polygonal products, if the spacing between the shared clamping edges is inconsistent, the third clamping module 122 with a controllable stroke clamping structure should be selected.

[0078] Please also refer to Figure 4 and Figure 5 Furthermore, when clamping products that share the first clamping module 121, fixed limiting column clamping structures are separately provided for large-sized products and small-sized products to fix them. The details are as follows:

[0079] 1) Define products with an area greater than or equal to 1 / 2 of the area of ​​the first clamping module 121 as large-size products. In this way, the shapes of the products that need to be shared are superimposed and compared, and edges with similar features are found as common limits. Special limits are made on other edges and staggered.

[0080] 2) Products with an area smaller than 1 / 2 of the area of ​​the first clamping module 121 are defined as large-size products, and the first clamping module 121 is divided into multiple areas (such as Figure 5 As shown in the figure), each area is individually arranged with fixed limiting columns for limiting according to product characteristics.

[0081] Please also refer to Figure 6 When clamping products that share the second clamping module 120 and the third clamping module 122, the product sharing rules are as follows:

[0082] 1. Products with similar shapes are given priority for sharing;

[0083] 2. Products with smaller difference in spacing between opposite sides shall be shared first;

[0084] 3. Products with the same clamping points will be given priority for sharing;

[0085] 4. Products of the same type should be placed in different clamping modules 120 as much as possible;

[0086] 5. A separate clamping module 120 is provided for products that differ greatly in shape and size from other products.

[0087] When clamping products that share the second clamping module 120 and the third clamping module 122, the selection of the product clamping points meets the following rules:

[0088] 1. The opposite sides of the clamping point should be as parallel as possible;

[0089] 2. The clamping position should be as close to the midpoint as possible;

[0090] 3. Choose straight lines as clamping positions whenever possible and avoid curves or bending points;

[0091] 4. For longer edges, use multi-point clamping as much as possible.

[0092] Therefore, by setting different clamping modules 120 to classify and clamp products, it is possible to position products of various shapes and sizes of several different models, so as to realize the function of automatic gluing of products of different shapes and sizes at a single workstation.

[0093] Example 3

[0094] See also Figures 1 to 6 This embodiment provides a product gluing system. The product gluing system includes a gluing device 200 and a product conveying device 100 according to any one of the above embodiments.

[0095] The gluing device 200 is arranged corresponding to the gluing station 20 and is used to perform gluing operations on the products on the clamping module 120. The glue supply hose on the gluing device 200 is connected to the dual-pump glue supply system 600 through the gear pump 700.

[0096] Furthermore, in this embodiment, multiple product conveying devices 100 may be provided, and the multiple product conveying devices 100 are arranged around the glue coating device 200. It should be understood that only two product conveying devices 100 are shown in the figure in this embodiment. In other embodiments, the product feeding devices may also be provided in three, four, or other quantities.

[0097] In some embodiments, the product gluing system further includes a loading assist device 300 , which is arranged corresponding to the loading station 10 and is used to suck the product for loading. This provides assistance for loading large and heavy products, reducing manual labor intensity.

[0098] Optionally, the loading assistance device 300 can be a KBK lifting device. It is understood that small, lightweight products can be loaded directly manually, while large, heavy products can be manually transferred from the rack to the corresponding clamping module 120 with the help of the loading assistance device 300 for clamping and positioning. In some embodiments, the loading assistance device 300 can also be a robot, which can perform product suction loading.

[0099] In some embodiments, the product gluing system further includes a blanking device 400 , which is arranged corresponding to the blanking station 30 and is used to absorb the glued product for blanking.

[0100] Furthermore, the unloading device 400 includes a unloading frame, an unloading arm, and a flipping drive mechanism. The unloading frame is mounted on the foundation; the unloading arm is rotatably mounted on the unloading frame, with a vacuum suction cup module at the end of the unloading arm for product suction. The flipping drive mechanism is mounted on the unloading frame and is in transmission connection with the unloading arm, driving the unloading arm to flip the unloading arm in a vertical plane to unload the product. Specifically, the flipping drive mechanism causes the unloading arm to flip 180° in the vertical plane, so that the glue-coated side of the product faces downward, facilitating subsequent manual pickup of the other side (uncoated side) of the product using a mechanical power arm for installation.

[0101] Optionally, the turning drive mechanism may be a motor or a rotary cylinder.

[0102] Furthermore, in order to ensure production safety, this embodiment sets a safety fence 500 around the product gluing system, and an openable safety door 510 is set on the safety fence 500.

[0103] In some embodiments, the multi-product gluing system also includes a glue cleaning station 40, which is located on the same side of the conveying mechanism 110 as the gluing device 200. The glue cleaning station 40 can be equipped with a glue cleaning device to clean the glue at the gluing end of the gluing device 200 to prevent residual glue from affecting the subsequent gluing quality.

[0104] It should be noted that in this application, unless otherwise specified, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like used to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on this application.

[0105] The structures of the glue coating device 200, KBK lifting equipment, and dual-pump glue supply system 600 in the above embodiment are well known to those skilled in the art and do not belong to the core improvement part of the present application, so they will not be described here in detail.

[0106] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0107] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0108] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0109] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A product conveying device, characterized in that: include: A conveying mechanism (110) is provided with a loading station (10), a gluing station (20) and a unloading station (30) along a conveying direction; A clamping module (120) is provided on the conveying mechanism (110), and the conveying mechanism (110) is used to drive the clamping module (120) to pass through the loading station (10), the gluing station (20) and the unloading station (30) in sequence; The clamping module (120) is tiltedly arranged on the conveying mechanism (110) and is provided with a clamping mechanism for clamping products, and an inclined angle is formed between the upper surface of the clamping module (120) and the horizontal plane.

2. The product conveying device according to claim 1, characterized in that: The conveying mechanism (110) is a rotary conveying mechanism, and the loading station (10), the gluing station (20) and the unloading station (30) are circumferentially distributed around the rotation center of the conveying mechanism (110); Wherein, the conveying mechanism (110) is provided with a plurality of the clamping modules (120) arranged at intervals around its own rotation center.

3. The product conveying device according to claim 2, characterized in that: The clamping methods of the clamping mechanisms provided on at least two of the clamping modules (120) are different.

4. The product conveying device according to claim 2, characterized in that: The plurality of clamping modules (120) include a first clamping module (121), a second clamping module and a third clamping module (122); The clamping mechanism provided on the first clamping module (121) is a fixed position-limiting clamping structure; the clamping mechanism provided on the second clamping module is a fixed stroke clamping structure; and the clamping mechanism provided on the third clamping module (122) is a controllable stroke clamping structure.

5. The product conveying device according to claim 4, characterized in that: The fixed limiting clamping structure comprises a plurality of fixed limiting columns, and the plurality of fixed limiting columns are distributed on the surface of the first clamping module (121); The fixed stroke clamping structure includes a plurality of clamping cylinders or clamping oil cylinders, and the clamping cylinders or the clamping oil cylinders are arranged in a counter-positioned manner on the second clamping module; The controllable stroke clamping structure includes a clamping electric cylinder.

6. A product gluing system, characterized in that: It comprises a gluing device (200) and a product conveying device (100) according to any one of claims 1 to 5, wherein the gluing device (200) is arranged corresponding to the gluing station (20) and is used for gluing the product on the clamping module (120).

7. The product gluing system according to claim 6, characterized in that: The product conveying device (100) is provided in plurality, and the plurality of product conveying devices (100) are arranged around the gluing device (200).

8. The product gluing system according to claim 6, characterized in that: The product gluing system further comprises a feeding assisting device (300), which is arranged corresponding to the feeding station (10) and is used for sucking the product for feeding.

9. The product gluing system according to claim 6, characterized in that: The product gluing system further comprises a blanking device (400), which is arranged corresponding to the blanking station (30) and is used for sucking the product after gluing for blanking.

10. The product gluing system according to claim 9, characterized in that: The blanking device (400) comprises: The unloading frame is set on the foundation; A discharge arm is rotatably mounted on the discharge frame, and a vacuum suction cup module for adsorbing products is provided at the end of the discharge arm; The turning drive mechanism is arranged on the blanking machine frame and is in driving connection with the blanking arm, and is used for driving the blanking arm to turn and blank in a vertical plane.

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