A feeding-bending-forming device and forming method for multi-size corrugated paper boxes

Abstract

The present invention provides a feeding-bending and forming device and forming method for a multi-size corrugated paper box. The forming device includes a main frame, a forming caliper mechanism, a paperboard feeding mechanism, four bending screw modules and an electric control system. The forming caliper mechanism is used to adjust the forming reference of the paper box; the forming caliper mechanism is arranged directly above the paperboard feeding mechanism, and the four bending screw modules are arranged in pairs on the main frame and located at the bottom of the paperboard. The same group of bending screw modules corresponds to a group of bending fixtures; the two bending screw modules of the same group are respectively arranged on the front and back sides of the paperboard used to make the paper box, and the paperboard feeding mechanism receives and transmits the paperboard from the forming caliper mechanism through the two groups of bending screw modules in sequence. The bending screw modules drive the corresponding bending fixtures to move and cooperate with the forming caliper mechanism to bend the paperboard. The present invention can realize accurate and meticulous bending and forming operations, and effectively ensure the size and shape accuracy of the produced corrugated paper boxes.

Description

Technical Field

[0001] The invention belongs to the technical field of packaging engineering, and in particular relates to a feeding-bending-forming device and a forming method for a multi-size corrugated paper box. Background Art

[0002] Corrugated paperboard is a container made of paper or paperboard for packaging, transportation and storage of goods. It is mainly made of corrugated paperboard, waxed corrugated paperboard and other materials. It has good rigidity and strength, and can widely replace wood and plastic packaging. It is a green, environmentally friendly, reusable and cost-effective product packaging form. It now occupies 40-50% of the packaging market share. There are many types of products packaged in corrugated paperboard, such as canned food, soft drinks, wine, meat, clothing and textiles, medicines, tobacco products, detergents, hardware, rubber products, etc. As the packaging performance of corrugated paperboard has been recognized by the market, the application field and scope are constantly expanding, so the requirements for its production and binding quality and refinement are becoming increasingly stringent.

[0003] This is both an opportunity and a challenge. The reason is that most corrugated box manufacturers produce and use the existing processing equipment on the market by purchasing and introducing it. They do not have the ability to design, develop and technically transform the equipment, and the original accuracy of the processing equipment that has been put into production determines and limits the accuracy of the processed products. This means that in order to further improve the quality of corrugated box production, the only effective way is often to purchase new equipment from equipment manufacturers or to carry out large-scale transformation of old equipment. Choosing this approach will undoubtedly greatly increase the operating costs and burden of the company, which is unbearable for many corrugated box manufacturers. Therefore, although corporate decision makers can fully understand the development trend of the market and the future direction of the industry, they often feel helpless and powerless in the face of the pressure caused by huge expenses. In addition, the existing cardboard bending machines have complex structures and high costs. Therefore, it is necessary to design a carton bending equipment with simple structure, convenient operation and low cost. Summary of the invention

[0004] In view of this, the present invention aims to propose a multi-size corrugated box feeding-bending and forming equipment and forming method, which has the characteristics of low cost and high precision, and is suitable for the bending and forming operations of corrugated cardboard required for the production of large-scale, multi-size corrugated boxes.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] A multi-size corrugated paper box feeding-bending and forming equipment, comprising a main frame including an upper beam, a middle beam and a lower beam, a forming caliper mechanism, a paperboard feeding mechanism, four bending screw modules and an electric control system;

[0007] The forming caliper mechanism is installed on the upper crossbeam of the main frame and is used to adjust the forming reference of the carton; the cardboard feeding mechanism is installed on the upper crossbeam of the main frame, the forming caliper mechanism is arranged directly above the cardboard feeding mechanism, four bending screw modules are arranged in pairs on the middle crossbeam of the main frame, and are located at the bottom of the cardboard used to make the carton, and the same group of bending screw modules corresponds to a group of bending fixtures; the two bending screw modules of the same group are respectively arranged on the front and back sides of the cardboard used to make the carton; the bending fixtures are arranged in two groups, namely bending fixture A and bending fixture B and bending fixture C and bending fixture D, the bending fixture A and bending fixture B are symmetrical structures, and the bending fixture C and bending fixture D are symmetrical structures; the electric control system is arranged on the lower crossbeam of the main frame, and the electric control system controls the operation of the cardboard feeding mechanism, the forming caliper mechanism and the bending screw module;

[0008] The cardboard feeding mechanism receives and transmits the cardboard for making cartons through the two sets of bending screw modules in sequence from the forming caliper mechanism. The bending screw modules drive the corresponding bending fixtures to move and cooperate with the forming caliper mechanism to bend and form the cardboard for making cartons.

[0009] Furthermore, each of the bending screw modules includes a motor, a screw, a nut and a mounting platform. The motor drives the screw to rotate, the screw cooperates with the nut, and the mounting platform is mounted on the nut.

[0010] Further, the forming caliper mechanism includes a bridge beam A, a bridge beam B, a frame longitudinal beam, a bending caliper A and a bending caliper B, the frame longitudinal beam includes a longitudinal beam and two vertical frames fixed at the lower part of the longitudinal beam, the bridge beam A and the bridge beam B are arranged in parallel and are respectively fixed at the left and right ends of the longitudinal beam, the two bridge beams are installed on the upper beam of the main frame, and the two bending calipers are arranged in parallel on the front and rear sides of the longitudinal beam;

[0011] The structures of the bending caliper A and the bending caliper B are the same, and both include a caliper structure and a slide rail structure. The slide rail structure of each bending caliper forms a sliding pair with the corresponding vertical frame of the frame-type longitudinal beam. Each caliper structure is driven by a rodless cylinder. The two rodless cylinders are both arranged on the bridge-type crossbeam B. Under the drive of their respective corresponding rodless cylinders, the bending caliper A and the bending caliper B are driven to move as a whole along the sliding pair to adjust the lateral spacing between the two caliper structures.

[0012] Furthermore, each end of the caliper structure is fixedly connected to its own rodless cylinder via a bent plate.

[0013] Furthermore, the paperboard feeding mechanism includes a transmission motor, a feeding transmission driving shaft, a feeding conveyor belt and a feeding transmission driven shaft;

[0014] The feeding and conveying driving shaft and the feeding and conveying driven shaft are rotatably arranged at the left and right ends of the upper cross beam of the main frame, the feeding conveyor belt cooperates with the feeding and conveying driving shaft and the feeding and conveying driven shaft, the feeding and conveying driving shaft is connected to the transmission motor through a chain transmission mechanism, the transmission motor drives the feeding and conveying driving shaft to rotate through the chain transmission mechanism, and the feeding and conveying driving shaft drives the feeding conveyor belt to convey the cardboard for making cartons to be bent and formed.

[0015] Furthermore, the chain transmission mechanism includes a driving sprocket, a driven sprocket and a transmission chain, the transmission chain is sleeved on the driving sprocket and the driven sprocket, the driving sprocket is installed on the output shaft of the transmission motor, and the driven sprocket is installed on the feeding transmission driving shaft.

[0016] Furthermore, the bending clamp A and the bending clamp C are placed on the same side, and the adjacent ends of the bending clamp A and the bending clamp C are arranged against each other, the bending clamp B and the bending clamp D are placed on the same side, and the adjacent ends of the bending clamp B and the bending clamp D are arranged against each other, and the two groups of bending clamps are arranged in sequence from the paper feed end to the paper outlet end.

[0017] Furthermore, each bending fixture includes a bending guide rail and a support base, the bending guide rail is tiltedly arranged on the support base, and each bending fixture is installed on the installation platform of the corresponding bending screw module through the support base.

[0018] Furthermore, the bending guide rails of the bending clamps A and B are inclined toward the paper feed end, and the bending guide rails of the bending clamps C and D are inclined toward the paper outlet end, and the ends of the two bending clamps on the same side that are close to each other are the high end, and the ends of the two bending clamps on the same side that are far away from each other are the low end.

[0019] A forming method of a multi-size corrugated paper box feeding-bending forming device comprises the following steps:

[0020] (1) The operator inputs the size and specification information of the cardboard to be made into the electronic control system;

[0021] (2) The electronic control system controls the forming caliper mechanism to move according to the received information, so that the bending caliper A and the bending caliper B move to the appropriate position as the reference for the corrugated board bending and forming operation;

[0022] (3) The electronic control system sequentially controls the bending screw modules used in conjunction with the bending fixtures A, B, C, and D to move according to the received information, so that the above bending fixtures have appropriate postures to prepare for the cardboard bending and forming operation;

[0023] (4) The electronic control system controls the cardboard feeding mechanism to operate. The feeding conveyor belt transports the cardboard from the paper feeding end to the paper discharging end. After being bent and formed by two sets of bending fixtures, the cardboard is finally output as a finished product.

[0024] Compared with the prior art, the multi-size corrugated paper box feeding-bending forming equipment and forming method described in the present invention have the following advantages:

[0025] The multi-size corrugated cardboard box feeding-bending and forming equipment described in the present invention can quickly and flexibly form a system with downstream equipment in the corrugated cardboard box production process for linkage use; the forming caliper mechanism and bending guide rails in its internal components can adjust their own structural shapes according to the actual forming dimensions and specifications of the corrugated cardboard boxes with a comprehensive size within the range of 700-2000mm, so as to realize precise and detailed bending and forming operations, and can effectively ensure the size and shape accuracy of the produced corrugated cardboard boxes. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0027] Figure 1 It is a schematic diagram of the overall layout of a multi-size corrugated box feeding-bending and forming equipment according to an embodiment of the present invention;

[0028] Figure 2 It is a structural schematic diagram of the forming caliper mechanism;

[0029] Figure 3 It is a structural schematic diagram of the paperboard feeding mechanism;

[0030] Figure 4 It is a schematic diagram of the structure of two sets of bending fixtures;

[0031] Figure 5 The present invention is a schematic diagram of forming a corrugated paper box using a multi-size corrugated paper box feeding-bending and forming device according to an embodiment of the present invention.

[0032] Description of reference numerals:

[0033] 1- Main frame;

[0034] 2-cardboard feeding mechanism; 2.1-feeding transmission driving shaft; 2.2-driven sprocket; 2.3-transmission chain; 2.4-transmission motor; 2.5-driving sprocket; 2.6-feeding conveyor belt; 2.7-feeding transmission driven shaft;

[0035] 3-Electronic control system; 4-Bending guide rail C; 5-Bending guide rail D; 6-Bending guide rail A;

[0036] 7-forming caliper mechanism; 7.1-bridge beam A; 7.2-bending caliper A; 7.3-bending caliper B; 7.4-frame longitudinal beam; 7.5-rodless cylinder; 7.6-bridge beam B;

[0037] 8- bending guide rail B;

[0038] 9-bending screw module; 10-cardboard D; 11-cardboard C; 12-cardboard B; 13-cardboard A; 14-bending guide rail; 15-support base. DETAILED DESCRIPTION

[0039] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0040] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0041] like Figure 1-Figure 4 As shown, a multi-size corrugated box feeding-bending and forming equipment includes a main frame 1 including an upper beam, a middle beam and a lower beam, a forming caliper mechanism 7, a paperboard feeding mechanism 2, four bending screw modules 9 and an electric control system 3;

[0042] The forming caliper mechanism 7 is installed on the upper crossbeam of the main frame 1 and is used to adjust the forming reference of the carton; the cardboard feeding mechanism 2 is installed on the upper crossbeam of the main frame 1, and the forming caliper mechanism 7 is arranged directly above the cardboard feeding mechanism 2. Four bending screw modules 9 are arranged in pairs on the middle crossbeam of the main frame 1 and are located at the bottom of the cardboard used to make the carton. The same group of bending screw modules 9 corresponds to a group of bending fixtures; the two bending screw modules 9 of the same group are respectively arranged on the front and back sides of the cardboard used to make the carton; the bending fixtures are arranged in two groups, namely, bending fixture A6 and bending fixture B8 and bending fixture C4 and bending fixture D5. The bending fixture A6 and bending fixture B8 are symmetrical structures, and the bending fixture C4 and bending fixture D5 are symmetrical structures. 5 are mutually symmetrical structures; the electric control system 3 is arranged on the lower crossbeam of the main frame 1, and the electric control system 3 controls the operation of the paperboard feeding mechanism 2, the forming caliper mechanism 7 and the bending screw module 9;

[0043] The cardboard feeding mechanism 2 receives and transmits the cardboard for making cartons to the forming caliper mechanism 7 through two sets of bending screw modules 9 in sequence. The bending screw module 9 drives the corresponding bending fixture to move and cooperate with the forming caliper mechanism 7 to bend and form the cardboard for making cartons.

[0044] Each of the bent screw modules 9 includes a motor, a screw, a nut and a mounting platform. The motor drives the screw to rotate, the screw cooperates with the nut, and the mounting platform is mounted on the nut.

[0045] The forming caliper mechanism 7 comprises a bridge beam A 7.1, a bridge beam B 7.6, a frame longitudinal beam 7.4, a bending caliper A 7.2 and a bending caliper B 7.3, wherein the frame longitudinal beam 7.4 comprises a longitudinal beam and two vertical frames fixedly arranged at the lower part of the longitudinal beam, the bridge beam A 7.1 and the bridge beam B 7.6 are arranged in parallel and fixedly arranged at the left and right ends of the longitudinal beam respectively, the two bridge beams are both installed on the upper beam of the main frame 1, and the two bending calipers are arranged in parallel at the front and rear sides of the longitudinal beam;

[0046] The structures of the bending caliper A 7.2 and the bending caliper B 7.3 are the same, and both include a caliper structure and a slide rail structure. The slide rail structure of each bending caliper forms a sliding pair with the corresponding vertical frame of the frame-type longitudinal beam. Each caliper structure is driven by a rodless cylinder 7.5. The two rodless cylinders 7.5 are both arranged on the bridge beam B 7.6. Under the drive of the corresponding rodless cylinders 7.5, the bending caliper A 7.2 and the bending caliper B 7.3 are driven to move along the sliding pair as a whole to adjust the lateral spacing between the two caliper structures. The rodless cylinder drive is easy to install, occupies a small space, has a simple structure, and has high driving reliability.

[0047] The bridge beam A 7.1 and the bridge beam B 7.6 are the supporting structures of the forming caliper mechanism 7, which are arranged at the two ends of the whole mechanism, and the bottoms thereof are installed on the horizontal plane of the upper beam of the main frame 1 through threaded connection; the frame longitudinal beam 7.4 is the main structure of the forming caliper mechanism 7, and the two ends thereof are installed on the middle horizontal plane of the bridge beam A 7.1 and the bridge beam B 7.6 through threaded connection; the rodless cylinder 7.5 is the driving element of the forming caliper mechanism 7, which can drive the bending caliper A 7.2 and the bending caliper B 7.3 to move, and the two ends thereof are installed on the vertical planes on both sides of the bridge beam B 7.6 through threaded connection and are arranged up and down; the bending caliper A 7.2 and the bending caliper B 7.3 are arranged up and down. 7.3 is the core part of the forming caliper mechanism 7. The two can be used in conjunction with each other under the drive of their respective corresponding rodless cylinders 7.5. They have a slide rail structure, a flange structure and a caliper structure, wherein the caliper structure is the basis for the corrugated cardboard bending and forming operation; the slide rail structure of the bending caliper A 7.2 and the bending caliper B7.3 can form a sliding pair with the vertical frame in the middle of the frame-type longitudinal beam 7.4, and the sliding pair has a supporting and guiding function; the flange structure of the bending caliper A 7.2 and the bending caliper B7.3 can be connected to the cylinder body of the respective corresponding rodless cylinder 7.5 through a threaded connection, and can drive the bending caliper A 7.2 and the bending caliper B 7.3 to move as a whole along their respective sliding pairs.

[0048] Each end of the caliper structure is fixedly connected to its own rodless cylinder 7.5 via a bent plate.

[0049] The cardboard feeding mechanism 2 comprises a transmission motor 2.4, a feeding transmission driving shaft 2.1, a feeding conveyor belt 2.6 and a feeding transmission driven shaft 2.7;

[0050] The feeding and conveying driving shaft 2.1 and the feeding and conveying driven shaft 2.7 are rotatably arranged at the left and right ends of the upper crossbeam of the main frame 1, the feeding conveyor belt 2.6 cooperates with the feeding and conveying driving shaft 2.1 and the feeding and conveying driven shaft 2.7, the feeding and conveying driving shaft 2.1 is connected with the transmission motor 2.4 through a chain transmission mechanism, the transmission motor 2.4 drives the feeding and conveying driving shaft 2.1 to rotate through the chain transmission mechanism, and the feeding and conveying driving shaft 2.1 drives the feeding conveyor belt 2.6 to convey the cardboard for making the carton to be bent and formed; the chain transmission mechanism includes a driving sprocket 2.5, a driven sprocket 2.2 and a transmission chain 2.3, the transmission chain 2.3 is sleeved on the driving sprocket 2.5 and the driven sprocket 2.2, the driving sprocket 2.5 is installed on the output shaft of the transmission motor 2.4, and the driven sprocket 2.2 is installed on the feeding and conveying driving shaft 2.1. Among them, the feeding and conveying active shaft 2.1 and the feeding and conveying driven shaft 2.7 are respectively arranged at the front and rear ends of the entire mechanism, installed in the corresponding shaft holes of the upper crossbeam of the main frame 1 through bearings, and cooperate with the feeding conveyor belt 2.6 to form a belt drive, which is the structural main body of the feeding and conveying mechanism 2; the transmission motor 2.4 is the power element of the entire mechanism, and its transmission shaft is connected to the driving sprocket 2.5, and can be installed on the middle crossbeam of the main frame 1 through a threaded connection; the driven sprocket 2.2 is installed at one end of the feeding and conveying active shaft 2.1, and can form a chain drive with the driving sprocket 2.5 and the transmission motor 2.4 through a transmission chain 2.3, and then can provide power for the operation of the feeding and conveying active shaft 2.1, the feeding and conveying driven shaft 2.7 and the feeding conveyor belt 2.6 under the drive of the transmission motor 2.4.

[0051] Bending jig A 6 and bending jig C 4 are placed on the same side, and the adjacent ends of bending jig A 6 and bending jig C 4 are arranged against each other. Bending jig B 8 and bending jig D 5 are placed on the same side, and the adjacent ends of bending jig B 8 and bending jig D5 are arranged against each other. The two groups of bending jigs are arranged in sequence from the paper feed end to the paper discharge end.

[0052] Each bending fixture includes a bending guide rail 14 and a support base 15 . The bending guide rail 14 is tiltedly arranged on the support base 15 . Each bending fixture is mounted on the mounting platform of the corresponding bending screw module 9 through the support base 15 .

[0053] The bending guide rails of bending fixture A 6 and bending fixture B 8 are inclined toward the paper feeding end, and the bending guide rails of bending fixture C 4 and bending fixture D 5 are inclined toward the paper discharging end, and the ends of the two bending fixtures on the same side that are close to each other are the high end, and the ends of the two bending fixtures on the same side that are far away from each other are the low end. The length of the bending guide rail of bending fixture A6 is shorter than that of the bending guide rail of bending fixture C4, and the bending guide rail of bending fixture C4 has a smoother transition than that of bending fixture A6; similarly, the length of the bending guide rail of bending fixture B8 is shorter than that of the bending guide rail of bending fixture D5, and the bending guide rail of bending fixture D5 has a smoother transition than that of bending fixture B8; such a structural design of the bending fixture allows cardboard A13 to be first bent into cardboard B12, and then cardboard B12 is bent into cardboard C11 and finally bent into cardboard D10, and is driven by the bending screw module 9, with a simple structure, convenient driving and good forming effect.

[0054] The main frame 1 is the main structure of the entire feeding-bending equipment, which is responsible for installing and fixing all other parts; the forming caliper mechanism 7 is the basis for the equipment to perform corrugated box bending and forming operations. It is installed on the upper crossbeam of the main frame 1 through a threaded connection, and its own structural shape can be adjusted according to the forming size and specifications of the corrugated box to meet the production needs of corrugated boxes of different sizes; the cardboard feeding mechanism 2 is responsible for receiving, transmitting and outputting corrugated cardboard used to make the box body. The feeding and transmission shaft in its internal components is installed on the upper crossbeam of the main frame 1 through a bearing, and the transmission motor in its internal components is installed on the middle crossbeam of the main frame 1 through a threaded connection; bending fixture A 6, bending fixture B 8, bending fixture C 4, bending fixture D 5 are flexible execution units of the entire equipment, and the four can use their own bending guide rails to bend the corrugated cardboard, and can be connected to the mounting platform of the corresponding bending screw module 9 through their own support bases in a threaded connection; the bending screw module 9 and the bending fixture A 6, bending fixture B 8, bending fixture C 4, bending fixture D 5 are used in conjunction with each other. On the one hand, they receive the corresponding bending fixture A6, bending fixture B 8, bending fixture C 4, bending fixture D 5 through their own mounting platform, and on the other hand, they are installed on the middle crossbeam of the main frame 1 through their own base in a threaded connection; the electric control system 3 is the control core of the entire device, which is installed on the bottom crossbeam of the main frame 1 through a threaded connection. It is responsible for receiving the work instructions of the operator and controlling each component to perform actions as required to realize the corresponding corrugated cardboard feeding-bending and forming operations.

[0055] This equipment is mainly aimed at small and medium-sized enterprise customers. It has the characteristics of low cost and high precision. It is suitable for the bending and forming operations of corrugated cardboard required for the production of large quantities and multi-size corrugated boxes. It can solve the practical problems currently existing in this field, such as the single model and specification of packaging boxes, long intervals between order changes, large deviations in binding seam dimensions, and high defective product rates.

[0056] like Figure 5 As shown, a forming method of a multi-size corrugated paper box feeding-bending forming device comprises the following steps:

[0057] (1) The operator inputs the size and specification information of the cardboard A13 to be made into the corrugated box into the electronic control system 3;

[0058] (2) The electronic control system 3 controls the forming caliper mechanism 7 to move according to the received information, so that the bending caliper A 7.2 and the bending caliper B 7.3 move to appropriate positions as the reference for the corrugated board bending and forming operation;

[0059] (3) The electronic control system 3 controls the bending screw module 9 used in conjunction with the bending fixture A 6, the bending fixture B 8, the bending fixture C 4, and the bending fixture D 5 to move in sequence according to the received information, so that the above four bending fixtures have appropriate postures to prepare for the cardboard bending and forming operation;

[0060] (4) The electronic control system 3 controls the cardboard feeding mechanism 2 to operate so that the feeding conveyor belt 2.6 is in accordance with Figure 5 Cardboard A13 is transported in the paper feeding direction shown, and is bent into cardboard B12 by bending fixture A6 and bending fixture B8, and then bent into cardboard C11 by bending fixture C4 and bending fixture D5, and finally bent into cardboard D10, and output to the next production process.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-size corrugated box feeding-bending and forming equipment, characterized by: It comprises a main frame (1) including an upper crossbeam, a middle crossbeam and a lower crossbeam, a forming caliper mechanism (7), a paperboard feeding mechanism (2), four bending screw modules (9) and an electric control system (3); The forming caliper mechanism (7) is mounted on the upper crossbeam of the main frame (1) and is used to adjust the forming reference of the carton; the paperboard feeding mechanism (2) is mounted on the upper crossbeam of the main frame (1), and the forming caliper mechanism (7) is arranged directly above the paperboard feeding mechanism (2); four bending screw modules (9) are arranged in pairs on the middle crossbeam of the main frame (1) and are located at the bottom of the paperboard used to make the carton; the same group of bending screw modules (9) corresponds to a group of bending fixtures; the two bending screw modules (9) of the same group are respectively arranged at The front and rear sides of the paperboard used for making the carton; the bending fixture is provided with two groups, namely, bending fixture A (6) and bending fixture B (8) and bending fixture C (4) and bending fixture D (5); the bending fixture A (6) and bending fixture B (8) are symmetrical structures, and the bending fixture C (4) and bending fixture D (5) are symmetrical structures; the electric control system (3) is provided on the lower crossbeam of the main frame (1), and the electric control system (3) controls the operation of the paperboard feeding mechanism (2), the forming caliper mechanism (7) and the bending screw module (9); The paperboard feeding mechanism (2) receives and transmits the paperboard for making the carton to the forming caliper mechanism (7) through two sets of bending screw modules (9) in sequence, and the bending screw modules (9) drive the corresponding bending fixtures to move and cooperate with the forming caliper mechanism (7) to bend and form the paperboard for making the carton; The forming caliper mechanism (7) comprises a bridge beam A (7.1), a bridge beam B (7.6), a frame longitudinal beam (7.4), a bending caliper A (7.2) and a bending caliper B (7.3); the frame longitudinal beam (7.4) comprises a longitudinal beam and two vertical frames fixedly arranged at the lower part of the longitudinal beam; the bridge beam A (7.1) and the bridge beam B (7.6) are arranged in parallel and fixedly arranged at the left and right ends of the longitudinal beam respectively; the two bridge beams are both mounted on the upper beam of the main frame (1); and the two bending calipers are arranged in parallel at the front and rear sides of the longitudinal beam; The structures of the bending caliper A (7.2) and the bending caliper B (7.3) are the same, and both include a caliper structure and a slide rail structure. The slide rail structure of each bending caliper forms a sliding pair with the corresponding vertical frame of the frame-type longitudinal beam. Each caliper structure is driven by a rodless cylinder (7.5). The two rodless cylinders (7.5) are both arranged on the bridge-type crossbeam B (7.6). Under the drive of the corresponding rodless cylinders (7.5), the bending caliper A (7.2) and the bending caliper B (7.3) are driven to move as a whole along the sliding pair to adjust the lateral spacing between the two caliper structures. The bending fixture A (6) and the bending fixture C (4) are placed on the same side, and the adjacent ends of the bending fixture A (6) and the bending fixture C (4) are arranged against each other; the bending fixture B (8) and the bending fixture D (5) are placed on the same side, and the adjacent ends of the bending fixture B (8) and the bending fixture D (5) are arranged against each other; the two sets of bending fixtures are arranged in sequence from the paper feed end to the paper discharge end; Each bending fixture comprises a bending guide rail (14) and a support base (15), wherein the bending guide rail (14) is tiltedly arranged on the support base (15), and each bending fixture is mounted on a mounting platform of a corresponding bending lead screw module (9) through the support base (15); The bending guide rails of the bending clamp A (6) and the bending clamp B (8) are inclined toward the paper feed end, and the bending guide rails of the bending clamp C (4) and the bending clamp D (5) are inclined toward the paper discharge end, and the ends of the two bending clamps on the same side that are close to each other are the high end, and the ends of the two bending clamps on the same side that are far away from each other are the low end.

2. The multi-size corrugated box feeding-bending-forming equipment according to claim 1, characterized in that: Each of the bent screw modules (9) comprises a motor, a screw, a nut and a mounting platform. The motor drives the screw to rotate, the screw cooperates with the nut, and the mounting platform is mounted on the nut.

3. The multi-size corrugated box feeding-bending-forming equipment according to claim 1, characterized in that: The end of each caliper structure is fixedly connected to a respective rodless cylinder (7.5) via a bent plate.

4. The multi-size corrugated box feeding-bending-forming equipment according to claim 1, characterized in that: The paperboard feeding mechanism (2) comprises a transmission motor (2.4), a feeding transmission driving shaft (2.1), a feeding conveyor belt (2.6) and a feeding transmission driven shaft (2.7); The feeding and conveying driving shaft (2.1) and the feeding and conveying driven shaft (2.7) are rotatably arranged at the left and right ends of the upper crossbeam of the main frame (1); the feeding and conveying belt (2.6) cooperates with the feeding and conveying driving shaft (2.1) and the feeding and conveying driven shaft (2.7); the feeding and conveying driving shaft (2.1) is connected to the transmission motor (2.4) through a chain transmission mechanism; the transmission motor (2.4) drives the feeding and conveying driving shaft (2.1) to rotate through the chain transmission mechanism; the feeding and conveying driving shaft (2.1) drives the feeding and conveying belt (2.6) to convey the cardboard for making the carton to be bent and formed.

5. The multi-size corrugated box feeding-bending-forming equipment according to claim 4, characterized in that: The chain transmission mechanism comprises a driving sprocket (2.5), a driven sprocket (2.2) and a transmission chain (2.3); the transmission chain (2.3) is sleeved on the driving sprocket (2.5) and the driven sprocket (2.2); the driving sprocket (2.5) is mounted on the output shaft of the transmission motor (2.4); and the driven sprocket (2.2) is mounted on the feeding transmission driving shaft (2.1).

6. A forming method for a multi-size corrugated box feeding-bending forming device according to any one of claims 1 to 5, characterized in that: The following steps are involved: Step 1: The operator inputs the size and specification information of the cardboard to be made into the electronic control system (3); Step 2: The electric control system (3) controls the forming caliper mechanism (7) to move according to the received information, so that the bending caliper A (7.2) and the bending caliper B (7.3) move to appropriate positions as a reference for the corrugated board bending and forming operation; Step 3: The electric control system (3) sequentially controls the bending screw module (9) used in conjunction with the bending fixture A (6), the bending fixture B (8), the bending fixture C (4) and the bending fixture D (5) to move according to the received information, so that the above bending fixtures have appropriate postures to prepare for the cardboard bending and forming operation; Step 4: The electronic control system (3) controls the cardboard feeding mechanism (2) to operate, and the feeding conveyor belt (2.6) transports the cardboard from the paper feeding end to the paper discharging end. After being bent and formed by two sets of bending fixtures, the cardboard is finally output as a finished product.

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