An intensity detection device for the production of packaging boxes

Abstract

The present invention relates to the technical field of packaging box production, and in particular to a strength detection device for packaging box production, which includes a base and guide columns symmetrically fixed on both sides of the base. An electric lifting plate is installed between the guide columns, and a hydraulic cylinder is installed on the electric lifting plate. The end of the telescopic rod of the hydraulic cylinder is fixedly connected with a pressing plate, which is used to press the packaging box from top to bottom to complete the strength detection. In the present invention, the belt assembly rotates forward to drive the packaging box to move to the right until it is directly below the pressing plate. Subsequently, the hydraulic cylinder is started to drive the pressing plate to move downward to contact the packaging box, and the pressing plate presses the top of the packaging box to complete the strength detection from top to bottom. At the same time, the stepping motor is started, so that the side plate I and the side plate II press the side of the packaging box to complete the strength detection of the side. In this way, the strength detection of the top and side of the packaging box can be continuously carried out, and the detection is more comprehensive, thereby improving the accuracy of the strength detection.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging box production, and in particular to a strength detection device for packaging box production. Background Art

[0002] During the production process of packaging boxes, multiple processes are required to complete the production. The purpose of the packaging box is to hold and take items. In order to ensure the quality of use of the packaging box, it is necessary to detect the strength of the packaging box.

[0003] A Chinese patent with the publication number CN220473249U discloses a strength detection device for packaging box production, which relates to the technical field of packaging box production. It includes a fixed frame. A to-be-detected box is placed at the bottom of the fixed frame. Both sides inside the fixed frame are fixedly provided with sliding rods. A plurality of stacked weight plates are slidably arranged on the rod walls of the two sliding rods, and the weight plates are located on the top of the to-be-detected box. Two fixing plates are symmetrically and fixedly provided at the top of the fixed frame. A plurality of uniformly distributed pins are inserted into the side walls of the two fixing plates. A jacks cooperating with the pins are opened on both sides of the plurality of weight plates. Although the above patent can detect the strength of the packaging box, it can only apply pressure to the top of the packaging box to complete the strength detection. Since the packaging box will be subjected to side pressure, it is impossible to apply pressure to the side of the packaging box to complete the side strength detection, and the detection is not comprehensive, which affects the accuracy of the strength detection.

[0004] The present invention aims to solve the problems existing in the above patent. For this purpose, a strength detection device for packaging box production is proposed, which can simultaneously apply pressure to the top and side of the packaging box to complete the strength detection, with comprehensive detection and improved accuracy of strength detection. Summary of the Invention

[0005] In order to overcome the disadvantages that although the above patent can detect the strength of the packaging box, it can only apply pressure to the top of the packaging box to complete the strength detection. Since the packaging box will be subjected to side pressure, it is impossible to apply pressure to the side of the packaging box to complete the side strength detection, and the detection is not comprehensive, which affects the accuracy of the strength detection, the present invention provides a strength detection device for packaging box production, which can simultaneously apply pressure to the top and side of the packaging box to complete the strength detection, with comprehensive detection and improved accuracy of strength detection.

[0006] The present invention is achieved through the following technical solutions:

[0007] A strength testing device for packaging box production, comprising a base and guide columns symmetrically fixed to both sides of the base, an electric lifting plate installed between the guide columns, a hydraulic cylinder installed on the electric lifting plate, a pressing plate fixed to the end of the telescopic rod of the hydraulic cylinder, used to press the packaging box from top to bottom to complete the strength test, and also comprising a conveying assembly, a bidirectional screw, a side plate I, a side plate II, a stepping motor and a supporting assembly, the conveying assembly is installed on the base, used to convey the packaging box to the bottom of the pressing plate, the pressing plate is symmetrically rotatably connected with a bidirectional screw, the threads on the front and rear sides of the bidirectional screw are opposite, and the front and rear sides of the bottom of the pressing plate are symmetrically slidably connected There is a side plate I, which is threadedly connected to the bidirectional screw, and a side plate II is fixedly connected to the bottom of the side plate I. There are protrusions on the side plate II at even intervals. A stepper motor is installed on the top of the pressure plate, and the output shaft of the stepper motor and the bidirectional screw are transmitted through a synchronous belt assembly. When the stepper motor is started, the stepper motor drives the bidirectional screw to rotate through the synchronous belt assembly, and the bidirectional screw drives the side plate I and the side plate II to move and contact with the packaging box, so that the side plate I and the side plate II apply pressure to the side of the packaging box to complete the strength test of the side. The support assembly is installed between the pressure plate and the base, and is used to drive the packaging box to move upward and disengage from the conveying assembly.

[0008] To further explain, the conveying assembly includes a rotating shaft symmetrically connected to the base, a belt assembly is evenly spaced between the rotating shafts, the top of the belt assembly is higher than the top of the base, a driving motor is installed on the base, and the output shaft end of the driving motor is fixedly connected to one of the rotating shaft ends.

[0009] To further explain, the support assembly includes a guide rod fixedly connected to the base, a movable frame slidably mounted on the guide rod and slidably connected to the base, a support plate fixedly connected to the top of the movable frame, used to drive the packaging box to move upward and disengage from the belt assembly, the support plate is located between adjacent belt assemblies, and a trigger assembly is arranged between the movable frame and the pressure plate, used to drive the movable frame to move.

[0010] To further explain, the trigger assembly includes a rack II fixed to the outer side of the movable frame, a spur gear rotatably connected to the base and meshing with the rack II, an elastic telescopic rod fixed to the bottom of the pressure plate, and a rack I meshing with the spur gear fixed to the elastic telescopic rod.

[0011] Further explanation, the strength testing equipment for packaging box production also includes a friction assembly, which includes a fixed plate fixedly connected between the side plates Ⅰ on both sides of the front, a disc rotatably connected to the fixed plate, and friction rods evenly spaced and fixed on the disc for performing friction tests on the packaging box, and a rotating assembly is arranged between the disc and the stepper motor for driving the disc to rotate.

[0012] Further description: The rotating assembly includes a vertical plate fixedly connected to the bottom of the pressing plate. A spline sleeve is rotatably inserted through the vertical plate. The spline sleeve is driven by a synchronous belt assembly between the output shaft of the stepping motor. A spline shaft is slidably connected to the inner side of the spline sleeve, and the end of the spline shaft is fixedly connected to the middle of the disc.

[0013] Further description: The strength detection device for packaging box production further includes a rotating rod rotatably connected to the base. The rotating rod is driven by a synchronous belt assembly between one of the rotating shafts. A brush roller in contact with the belt assembly is fixedly sleeved on the rotating rod, which is used to remove impurities attached to the belt assembly.

[0014] Further description: The strength detection device for packaging box production further includes rubber strips fixedly connected to the support plate at uniform intervals, which are used to increase the friction force with the packaging box.

[0015] The beneficial effects of the present invention are as follows:

[0016] 1. The positive rotation of the belt assembly drives the packaging box to move to the right until it is directly below the pressing plate. Then, the hydraulic cylinder is started to drive the pressing plate to move downward to contact the packaging box. The pressing plate presses on the top of the packaging box to complete the strength detection from top to bottom. At the same time, the stepping motor is started so that the side plate I and the side plate II press on the side of the packaging box to complete the strength detection of the side. In this way, the strength detection of the top and side of the packaging box can be continuously carried out, and the detection is more comprehensive, thereby improving the accuracy of the strength detection.

[0017] 2. Under the action of the support plate, whenever the support plate moves upward, the support plate drives the packaging box to move upward to disengage from the belt assembly, so as to prevent the belt assembly from being damaged due to the force during the strength detection of the packaging box, thus ensuring the safety of the belt assembly.

[0018] 3. Under the action of the friction rod, whenever the side plate I presses on the side of the packaging box, the friction rod contacts the outer wall of the packaging box. The rotation of the friction rod can friction the packaging box, and the friction rod performs an anti-scratch detection on the packaging box. In this way, the anti-scratch performance of the packaging box can be further detected, thereby further improving the accuracy of the strength of the packaging box. Description of the Drawings

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0020] Figure 2 It is a three-dimensional structural schematic diagram of the conveying assembly, the rotating shaft and the driving motor of the present invention.

[0021] Figure 3 It is a three-dimensional structural schematic diagram of the bidirectional lead screw, the side plate I and the side plate II of the present invention.

[0022] Figure 4Schematic three-dimensional structure diagram of the support component of the present invention.

[0023] Figure 5 Schematic three-dimensional structure diagram of the elastic telescopic rod and the rack II of the present invention.

[0024] Figure 6 Schematic three-dimensional structure diagram of the friction component of the present invention.

[0025] Figure 7 Schematic three-dimensional structure diagram of the disc and the friction rod of the present invention.

[0026] Figure 8 Schematic three-dimensional structure diagram of the rotating rod and the brush roller of the present invention.

[0027] Figure 9 Schematic three-dimensional structure diagram of the rubber strip of the present invention.

[0028] Among them, the above-mentioned drawings include the following reference numerals: 1. Base, 2. Guide post, 3. Electric lifting plate, 4. Hydraulic cylinder, 5. Pressing plate, 6. Belt assembly, 61. Rotating shaft, 62. Driving motor, 7. Bi-directional lead screw, 8. Side plate I, 9. Side plate II, 10. Stepper motor, 11. Guide rod, 111. Movable frame, 112. Support plate, 113. Straight gear, 114. Elastic telescopic rod, 115. Rack I, 116. Rack II, 12. Fixed plate, 121. Disc, 1211. Friction rod, 122. Vertical plate, 123. Spline sleeve, 124. Spline shaft, 13. Rotating rod, 14. Brush roller, 15. Rubber strip. Detailed implementation manners

[0029] It should be noted first that in different described embodiments, the same components are provided with the same reference numerals or the same component names. Among them, the disclosed content included in the entire specification can be meaningfully applied to the same components with the same reference numerals or the same component names. The positional descriptions selected in the specification, such as up, down, lateral, etc., also refer to the directly described and illustrated drawings and are meaningfully applied to the new positions when the positions change.

[0030] Embodiment: An intensity detection device for the production of packaging boxes. Please refer to Figures 1-5As shown, it includes a base 1 and guide columns 2 symmetrically fixed to the front and rear sides of the base 1, an electric lifting plate 3 is installed between the four guide columns 2, a hydraulic cylinder 4 is installed in the middle of the electric lifting plate 3, and a pressing plate 5 is fixed to the end of the telescopic rod of the hydraulic cylinder 4. When the pressing plate 5 moves downward and contacts the top of the packaging box, the pressing plate 5 can realize the pressure on the packaging box from top to bottom to complete the strength test. It also includes a conveying component, a two-way screw rod 7, a side plate I8, a side plate II9, a stepping motor 10 and a supporting component. The conveying component is installed on the base 1. When the conveying component is in operation, the conveying component can realize the conveying of the packaging box to the bottom of the pressing plate 5 for strength testing. The pressing plate 5 is symmetrically rotatably connected with a two-way screw rod 7, and the threads on the front and rear sides of the two-way screw rod 7 are opposite. The front and rear sides of the bottom of the pressing plate 5 are both symmetrically slidably connected with the side plate I8 The side panels Ⅰ8 on the left and right sides are respectively threadedly connected with the two-way screw rods 7 on the left and right sides. The bottoms of the four side panels Ⅰ8 are fixedly connected with side panels Ⅱ9. The side of the side panels Ⅱ9 on the front and rear sides that are close to each other are evenly spaced with protrusions. A stepper motor 10 is installed on the front side of the top of the pressure plate 5. The output shaft of the stepper motor 10 and the front sides of the two-way screw rods 7 on the left and right sides are driven by a synchronous belt assembly. When the stepper motor 10 is started, the stepper motor 10 drives the two-way screw rod 7 to rotate through the synchronous belt assembly. The two-way screw rod 7 drives the side panels Ⅰ8 and side panels Ⅱ9 to move and contact with the packaging box, so that the side panels Ⅰ8 and side panels Ⅱ9 apply pressure to the side of the packaging box to complete the strength test of the side. The support assembly is installed between the pressure plate 5 and the base 1. When the support assembly is in operation, the support assembly can drive the packaging box to move upward and disengage from the conveying assembly.

[0031] See also Figure 1 and Figure 2 As shown, the conveying assembly includes a belt assembly 6, a rotating shaft 61 and a driving motor 62. The rotating shaft 61 is symmetrically connected to the base 1 for rotation. The belt assembly 6 is evenly spaced between the rotating shafts 61 on the left and right sides. The top of the belt assembly 6 is higher than the top of the base 1. The belt assembly 6 consists of two pulleys and a flat belt, wherein the two pulleys are fixedly mounted on the rotating shafts 61 on the left and right sides, respectively, and the flat belt is wound between the two pulleys. A driving motor 62 is installed on the right rear side of the base 1, and the output shaft end of the driving motor 62 is fixedly connected to the rear end of the right rotating shaft 61.

[0032] See also Figure 4 and Figure 5As shown, the support assembly includes a guide rod 11, a movable frame 111, a support plate 112 and a trigger assembly. The guide rod 11 is fixedly connected to the rear side of the middle of the base 1. The movable frame 111 is slidably mounted on the guide rod 11. The movable frame 111 is slidably connected to the base 1. The two tops of the movable frame 111 are fixedly connected to support plates 112. The support plates 112 are located between adjacent belt assemblies 6. When the support plates 112 move upward, the support plates 112 can drive the packaging box to move upward and disengage from the belt assembly 6. A trigger assembly is arranged between the movable frame 111 and the pressure plate 5. When the trigger assembly is operated, the trigger assembly can drive the movable frame 111 to move up and down. The trigger assembly includes a spur gear 113, an elastic telescopic rod 114, a rack I 115 and a rack II 116. The outer rear side of the movable frame 111 is fixedly connected to the rack II 116. The rear side of the middle part of the base 1 is rotatably connected to the spur gear 113, and the spur gear 113 is meshed with the rack II 116. The rear side of the bottom of the pressure plate 5 is fixedly connected to the elastic telescopic rod 114. The elastic telescopic rod 114 is composed of a sleeve, a sliding rod and a spring, wherein the sleeve is fixedly connected to the rear side of the bottom of the pressure plate 5, the sliding rod is slidably connected to the inner side of the sleeve, the spring is connected between the inner side of the sleeve and the top of the sliding rod, and the lower part of the front side of the elastic telescopic rod 114 is fixedly connected to the rack I 115, and the rack I 115 is meshed with the spur gear 113.

[0033] First, set the pressure applied by the hydraulic cylinder 4. Start the electric lifting plate 3 to drive the hydraulic cylinder 4 to move up and down. The hydraulic cylinder 4 drives the pressing plate 5 to move up and down. When the pressing plate 5 moves up and down to a suitable height for pressing the packaging box, turn off the electric lifting plate 3. Then start the driving motor 62 to rotate intermittently in the forward direction. The driving motor 62 drives the rotating shaft 61 to rotate intermittently in the forward direction. The rotating shaft 61 drives the belt assembly 6 to rotate intermittently in the forward direction. Subsequently, the packaging box can be placed on the belt assembly 6 from the left side by the machine. The belt assembly 6 rotates in the forward direction to drive the packaging box to move to the right for conveying. Whenever the belt assembly 6 stops rotating in the forward direction, the machine places the packaging box on the belt assembly 6. In this way, the spacing of the packaging boxes on the belt assembly 6 can be made consistent. When the packaging box moves to directly below the pressing plate 5 to the right, the belt assembly 6 stops driving the packaging box to move to the right. Then start the hydraulic cylinder 4. The telescopic rod of the hydraulic cylinder 4 extends to drive the pressing plate 5 to move downward. The pressing plate 5 drives the side plate I 8 to move downward. The side plate I 8 drives the side plate II 9 to move downward. The pressing plate 5 also drives the elastic telescopic rod 114 to move downward. The elastic telescopic rod 114 moves downward to drive the rack I 115 to move downward. The rack I 115 moves downward to drive the spur gear 113 to rotate in the forward direction. The spur gear 113 rotates in the forward direction to drive the rack II 116 to move upward. The rack II 116 moves upward to drive the movable frame 111 to move upward. The movable frame 111 drives the support plate 112 to move upward. The support plate 112 moves upward to contact the bottom of the packaging box. The support plate 112 drives the packaging box to move upward to disengage from the belt assembly 6, so as to prevent the belt assembly 6 from being damaged due to the force during the strength detection of the packaging box, thereby ensuring the safety of the belt assembly 6. When the elastic telescopic rod 114 moves downward and contacts the inside of the base 1, the base 1 limits the elastic telescopic rod 114. The elastic telescopic rod 114 causes the rack I 115 to stop moving downward, and the support plate 112 also stops moving upward. When the pressing plate 5 continues to move downward, it compresses the elastic telescopic rod 114. When the pressing plate 5 moves downward and contacts the top of the packaging box, the pressing plate 5 moves downward to apply pressure to the top of the packaging box for strength detection, thus completing the pressure application from top to bottom. At the same time, start the stepping motor 10. The stepping motor 10 rotates and drives the bidirectional lead screw 7 to rotate in the forward direction through the synchronous belt assembly drive. The bidirectional lead screw 7 rotates in the forward direction to drive the side plates I 8 on the front and rear sides to move in the direction of approaching each other. The side plates I 8 on the front and rear sides move in the direction of approaching each other to contact the side of the packaging box. The side plate I 8 applies pressure to the side of the packaging box for strength detection. At the same time, the side plate I 8 drives the side plates II 9 on the front and rear sides to move in the direction of approaching each other. The side plates II 9 on the front and rear sides move in the direction of approaching each other to contact the packaging box. Due to the convex setting of the side plate II 9, the side plate II 9 applies pressure to a small area of the packaging box to complete the strength detection. In this way, the side plate I 8 and the side plate II 9 can complete the strength detection of the large area and the small area of the side of the packaging box, thereby improving the accuracy of the strength detection of the side of the packaging box. When the side plate I 8, the side plate II 9, and the pressing plate 5 complete the strength detection of the packaging box, start the stepping motor 10 to rotate in the reverse direction.The stepper motor 10 drives the two-way lead screw 7 to reverse through the synchronous belt assembly. The two-way lead screw 7 drives the side plates I 8 on the front and rear sides to move and reset in the direction away from each other. The reset of the side plates I 8 drives the side plates II 9 on the front and rear sides to move and reset in the direction away from each other. Subsequently, the hydraulic cylinder 4 is started to drive the pressing plate 5 to move upward and reset. The reset of the pressing plate 5 causes it to disengage from the packaging box. The reset of the pressing plate 5 drives the elastic telescopic rod 114 to move upward and reset. The elastic telescopic rod 114 drives the rack I 115 to move upward and reset. The rack I 115 drives the movable frame 111 to move downward and reset through the spur gear 113 and the rack II 116. The movable frame 111 drives the support plate 112 to move downward and reset. The support plate 112 drives the packaging box to move downward and reset. The reset of the packaging box contacts the belt assembly 6. The belt assembly 6 continues to rotate forward to drive the inspected packaging box to move to the right for conveying, and moves the next packaging box to directly below the pressing plate 5. Repeating this process can continuously perform strength tests on the top and sides of the packaging box, making the inspection more comprehensive, thereby improving the accuracy of strength testing. When all the packaging boxes have completed the strength test, the drive motor 62 is turned off, and the belt assembly 6 stops rotating forward. The operator can then check the condition of the inspected packaging box. If the packaging box is deformed or damaged, it indicates that the strength of the packaging box is unqualified; otherwise, it is qualified.

[0034] Please refer to Figure 6 and Figure 7 As shown, the strength testing device for packaging box production further includes a friction assembly installed between the stepper motor 10 and the side plate I 8. The friction assembly includes a fixed plate 12, a disc 121, a friction rod 1211, and a rotating assembly. A fixed plate 12 is fixedly connected between the mutually approaching sides of the front left and right side plates I 8. A disc 121 is rotatably inserted through the middle of the fixed plate 12. Friction rods 1211 are fixedly connected to the rear side surface of the disc 121 at equal intervals. When the friction rod 1211 rotates, the friction rod 1211 can perform a friction test on the packaging box to complete the detection of the scratch resistance of the packaging box. A rotating assembly is provided between the disc 121 and the stepper motor 10. When the rotating assembly operates, the rotating assembly can drive the disc 121 to rotate; the rotating assembly includes a vertical plate 122, a spline sleeve 123, and a spline shaft 124. A vertical plate 122 is fixedly connected to the front side of the bottom of the pressing plate 5. A spline sleeve 123 is rotatably inserted through the lower part of the vertical plate 122. The front side of the outer surface of the spline sleeve 123 is driven by a synchronous belt assembly with the output shaft of the stepper motor 10. A spline shaft 124 is slidably connected to the inside of the spline sleeve 123. The rear end of the spline shaft 124 is fixedly connected to the middle of the front side surface of the disc 121.

[0035] When the stepping motor 10 is started, the stepping motor 10 drives the spline sleeve 123 to rotate through the synchronous belt assembly. The rotation of the spline sleeve 123 drives the spline shaft 124 to rotate, and the rotation of the spline shaft 124 drives the disc 121 to rotate. The disc 121 drives the friction rod 1211 to rotate. When the side plates Ⅰ8 on the front and rear sides move towards each other to press against the packaging box, the front side plate Ⅰ8 drives the disc 121 to move backward through the fixing plate 12. The disc 121 drives the friction rod 1211 to move backward to contact the packaging box. The friction rod 1211 rotates and rubs on the packaging box. The friction rod 1211 performs anti-scratch detection on the packaging box. When the side plates Ⅰ8 on the front and rear sides move away from each other to reset, the front side plate Ⅰ8 resets and drives the disc 121 to move forward through the fixing plate 12 to reset. The disc 121 drives the friction rod 1211 to move forward to reset. The friction rod 1211 resets and disengages from the packaging box. The stepping motor 10 is turned off, and the stepping motor 10 stops driving the spline sleeve 123 to rotate. The spline sleeve 123 stops driving the disc 121 to rotate through the spline shaft 124, and the disc 121 stops driving the friction rod 1211 to rotate. In this way, the anti-scratch property of the packaging box can be further detected, thereby further improving the accuracy of the strength of the packaging box.

[0036] Please refer to Figure 8 As shown, the strength detection device for packaging box production further includes a rotating rod 13 and a brush roller 14. The lower part of the right side surface of the base 1 is rotatably connected with a rotating rod 13. The front side of the rotating rod 13 and the front side of the right rotating shaft 61 are driven by a synchronous belt assembly. A brush roller 14 is fixedly sleeved in the middle of the rotating rod 13. The brush roller 14 contacts the belt assembly 6. When the brush roller 14 rotates, the brush roller 14 can remove the impurities attached to the belt assembly 6.

[0037] Please refer to Figure 9 As shown, the strength detection device for packaging box production further includes a rubber strip 15. Three rubber strips 15 are fixedly connected to the tops of the front and rear support plates 112 at equal intervals. The rubber strip 15 can increase the friction force with the packaging box.

[0038] When the driving motor 62 is started to rotate forward, the right rotating shaft 61 rotates forward and drives the rotating rod 13 to rotate forward through the synchronous belt assembly. The rotating rod 13 rotates forward and drives the brush roller 14 to rotate forward. The brush roller 14 rotates forward to remove the impurities attached to the belt assembly 6. When the driving motor 62 is turned off, the right rotating shaft 61 stops driving the rotating rod 13 to rotate forward, and the rotating rod 13 stops driving the brush roller 14 to rotate forward. In this way, it can prevent the impurities attached to the belt assembly 6 from being corroded and affecting the use, thereby ensuring the service life of the belt assembly 6.

[0039] When the support plate 112 moves upward, the support plate 112 drives the rubber strip 15 to move upward. The rubber strip 15 moves upward and contacts the packaging box. The support plate 112 drives the packaging box to move upward through the rubber strip 15 and disengages from the belt assembly 6. The rubber strip 15 increases the friction force with the packaging box. In this way, the packaging box can be more firmly placed on the support plate 112.

[0040] Finally, it is necessary to note that the above content is only used to help understand the technical solution of the present invention and should not be construed as a limitation on the protection scope of the present invention; any non-essential improvements and adjustments made by those skilled in the art based on the above content of the present invention fall within the scope of protection required by the present invention.

Claims

1. An intensity detection device for the production of packaging boxes, comprising a base (1) and guide columns (2) symmetrically and fixedly connected to both sides of the base (1). An electric lifting plate (3) is installed between the guide columns (2). A hydraulic cylinder (4) is installed on the electric lifting plate (3). The end of the telescopic rod of the hydraulic cylinder (4) is fixedly connected with a pressing plate (5) for pressing the packaging box from top to bottom to complete the intensity detection. A conveying assembly is installed on the base (1) for conveying the packaging box to directly below the pressing plate (5). On the front and rear sides of the bottom of the pressing plate (5), side plates I (8) are symmetrically and slidably connected. It is characterized in that, The invention also comprises a bidirectional screw rod (7), a side plate II (9), a stepping motor (10) and a supporting assembly. The bidirectional screw rod (7) is symmetrically rotatably connected to the pressing plate (5). The threads on the front and rear sides of the bidirectional screw rod (7) are opposite. The side plate I (8) is threadedly connected to the bidirectional screw rod (7). The bottom of the side plate I (8) is fixedly connected to the side plate II (9). The side plate II (9) is evenly spaced with protrusions. The top of the pressing plate (5) is equipped with a stepping motor (10). The output shaft of the stepping motor (10) is connected to the bidirectional screw rod (7). The stepper motor (10) is driven by a synchronous belt assembly. When the stepper motor (10) is started, the stepper motor (10) drives the bidirectional screw (7) to rotate through the synchronous belt assembly. The bidirectional screw (7) drives the side plate I (8) and the side plate II (9) to move and contact with the packaging box, so that the side plate I (8) and the side plate II (9) apply pressure to the side of the packaging box to complete the strength test of the side. The support assembly is installed between the pressure plate (5) and the base (1) to drive the packaging box to move upward and disengage from the conveying assembly. The conveying assembly comprises a rotating shaft (61) symmetrically connected to the base (1), belt assemblies (6) are evenly spaced and connected between the rotating shafts (61), the top of the belt assembly (6) is higher than the top of the base (1), a driving motor (62) is installed on the base (1), and the end of the output shaft of the driving motor (62) is fixedly connected to the end of one of the rotating shafts (61); The support assembly comprises a guide rod (11) fixedly connected to the base (1); a movable frame (111) slidably mounted on the guide rod (11) and slidably connected to the base (1); a support plate (112) is fixedly connected to the top of the movable frame (111) and is used to drive the packaging box to move upward and disengage from the belt assembly (6); the support plate (112) is located between adjacent belt assemblies (6); and a trigger assembly is provided between the movable frame (111) and the pressure plate (5) and is used to drive the movable frame (111) to move; The trigger assembly comprises a rack II (116) fixedly connected to the outer side of the movable frame (111); a spur gear (113) meshing with the rack II (116) is rotatably connected to the base (1); an elastic telescopic rod (114) is fixedly connected to the bottom of the pressure plate (5); and a rack I (115) meshing with the spur gear (113) is fixedly connected to the elastic telescopic rod (114).

2. The strength detection device for producing a packaging box according to claim 1, characterized in that, The strength testing device for packaging box production also includes a friction component, which includes a fixed plate (12) fixedly connected between the side plates Ⅰ (8) on both sides of the front, a disc (121) rotatably connected to the fixed plate (12), and friction rods (1211) fixedly connected to the disc (121) at even intervals for performing friction testing on the packaging box, and a rotating component is arranged between the disc (121) and the stepping motor (10) for driving the disc (121) to rotate.

3. The strength detection device for the production of a packaging box according to claim 2, wherein, The rotating assembly includes a vertical plate (122) fixedly connected to the bottom of the pressing plate (5). A spline sleeve (123) is rotatably inserted through the vertical plate (122). The spline sleeve (123) is driven by a synchronous belt assembly with the output shaft of the stepping motor (10). A spline shaft (124) is slidably connected to the inner side of the spline sleeve (123), and the end of the spline shaft (124) is fixedly connected to the middle of the disc (121).

4. The strength detection device for the production of packaging boxes according to claim 3, wherein, The strength detection device for packaging box production further includes a rotating rod (13) rotatably connected to the base (1). The rotating rod (13) is driven by a synchronous belt assembly with one of the rotating shafts (61). A brush roller (14) in contact with the belt assembly (6) is fixedly sleeved on the rotating rod (13) for removing impurities attached to the belt assembly (6).

5. The strength detection device for the production of a packaging box according to claim 4, characterized in that, The strength detection device for packaging box production further includes rubber strips (15) fixedly connected to the support plate (112) at equal intervals for increasing the friction with the packaging box.

Images