An automatic gluing device for assembling cardboard boxes

Abstract

This utility model provides an automatic gluing device for cardboard box splicing, including a support frame, a conveyor belt, and a glue applicator. The conveyor belt is mounted on the support frame, and the glue applicator is mounted on the upper middle part of the support frame. The glue applicator includes hydraulic rods, a fixed plate, a glue applicator box, and a motor. The hydraulic rods are symmetrically mounted on both sides of the support frame. The two ends of the fixed plate are connected to the hydraulic rods respectively. A moving groove is opened in the middle of the fixed plate, and a screw is installed in the moving groove. The glue applicator box is placed in the moving groove, and the screw passes through the glue applicator box. The motor is located on one side of the fixed plate and connected to the screw. A glue injection pipe is connected to the top of the glue applicator box. This utility model provides an automatic glue applicator for cardboard used in splicing cardboard boxes. It can adjust the width of the glue applicator range, automatically perform positioning glue applicator, significantly improve the efficiency of the glue applicator process, ensure the position of the cardboard is fixed during the glue applicator process, accurately control the amount of glue used, avoid excessive glue application, save glue consumption, ensure glue bonding quality, and reduce drying time.

Description

Technical Field

[0001] This utility model belongs to the field of equipment for producing and processing spliced ​​cardboard boxes, and specifically relates to an automatic glue applicator for splicing cardboard boxes. Background Technology

[0002] Cardboard boxes are a common product in the current packaging industry. Due to their low price, good packaging effect, and high design flexibility, they are used for packaging various types of products. However, because different products have different sizes, the required cardboard box sizes vary greatly; for example, the size difference between packaging boxes for mobile phones and refrigerators can be hundreds of times. When manufacturing large-sized cardboard boxes, to save on manufacturing costs, multiple pieces of cardboard are usually spliced ​​together, then glued and folded. This significantly reduces material usage. However, in the current cardboard box bonding process, the gluing process is done manually, which is not only slow but also results in uneven and inconsistent glue application. For cardboard boxes with high bonding quality requirements, it is difficult to control the yield rate of finished boxes, and it also significantly increases the amount of glue used, leading to increased manufacturing costs. Utility Model Content

[0003] This utility model provides an automatic gluing device for cardboard box splicing. It uses an automatically movable gluing device to apply glue to the cardboard box and controls the glue application width, thereby realizing the automated control process of gluing the cardboard raw material.

[0004] An automatic gluing device for cardboard box assembly comprises three parts: a support frame, a conveyor belt, and a glue applicator. The conveyor belt, serving as the cardboard transport component, is mounted on the support frame, and the glue applicator is installed in the middle of the support frame, positioned above the conveyor belt, to automatically apply glue to the cardboard. To achieve automatic gluing, the glue applicator includes hydraulic rods, a fixed plate, a glue applicator box, and a motor. Two hydraulic rods are symmetrically mounted on both sides of the support frame, and the two ends of the fixed plate are connected to the tops of the two hydraulic rods respectively. The hydraulic rods work together to control the up-and-down movement of the fixed plate. A moving groove perpendicular to the direction of the conveyor belt is cut in the middle of the fixed plate, and a screw is installed in the moving groove, allowing the screw to rotate freely. The motor is fixed to the fixed plate, positioned to one side of the screw, with its shaft connected to the screw, enabling the motor to drive the screw to rotate. A through-hole is provided in the center of the glue application box. The glue application box is installed in the moving slot, and a screw passes through the screw hole on the glue application box, allowing the glue application box to move along the screw in the moving slot. Simultaneously, the glue application box is prevented from rotating by the moving slot. When the screw rotates, the glue application box, being prevented from rotating, is moved by the rotating screw. Then, the top of the glue application box is connected to an external glue dispensing tube, through which glue is supplied to the glue application box.

[0005] To better control the amount of glue applied, the glue application box consists of a box body, an inner liner, a second motor, a drive gear, and a glue application head. The inner liner is installed inside the box body, positioned to avoid the screw, and temporarily stores the glue. The glue application head, as the glue application component, is rotatably mounted at the bottom of the box body, connecting the inner liner to the glue dispensing tube and the glue application head. The upper end of the glue application head is gear-shaped, and the lower end is plate-shaped. The entire glue application head is hollow, with a long strip-shaped glue application port at the lower end through which glue is applied. The second motor is installed at the bottom of the box body, with its shaft passing through the lower end of the box body. The drive gear is connected to the shaft of the second motor, meshing with the upper end of the glue application head. The rotation of the drive gear by the second motor adjusts the angle of the glue application head, thereby controlling the tilt angle of the glue application port at the bottom of the glue application head to achieve different glue application widths.

[0006] To facilitate rapid placement and positioning of cardboard, baffles are installed on both sides of the support frame. These baffles are symmetrically mounted on the frame, positioned in front of the glue applicator and perpendicular to the conveyor belt. The front ends of both baffles expand outwards, forming a funnel shape at the entrance. The cooperation of the two baffles prevents the cardboard from slipping off the conveyor belt, and the funnel-shaped entrance facilitates rapid placement of the cardboard.

[0007] To enhance the limiting effect of the first baffle, two support rods are installed on its outer side wall. External threads are cut into the ends of the support rods, and corresponding lugs are fixed to the bracket, allowing the support rods to pass through the lugs. The first baffle is then mounted on the bracket via the support rods. A nut and a spring are fitted onto the threaded ends of the support rods, with the spring positioned between the nut and the lug. The distance between the two first baffles can be adjusted by changing the position of the nut, allowing the first baffles to accommodate cardboard of different widths. By using the two first baffles to limit the position of the cardboard, the cardboard is prevented from deflecting during transport on the conveyor belt.

[0008] To better secure the cardboard during glue application, a roller is installed above the conveyor belt between the baffles. The roller's direction is perpendicular to the conveyor belt's movement. A mounting bracket is installed on the support frame, with both ends connected to the sides of the support frame, positioning the bracket directly above the roller. Stops are located at both ends of the roller, and a sliding rod is positioned above each stop. The upper end of the sliding rod has external threads, which are threaded through the support frame, and a nut is fitted onto the threaded portion. A spring is fitted onto the sliding rod, positioned between the stop and the support frame. The cooperation of the sliding rod and the spring allows the roller to move elastically up and down, using the interaction between the roller and the conveyor belt to press the cardboard firmly, preventing it from slipping during glue application.

[0009] Two rollers are set up as described above, with one roller close to the glue applicator and the other roller located in the middle of the baffle to further enhance the pressing and anti-slip effect.

[0010] To prevent the cardboard from slipping off the conveyor belt during the post-gluing process, a second baffle is installed on the support at the rear end of the glue applicator. The second baffle is symmetrically arranged on both sides of the support and perpendicular to the conveyor belt.

[0011] To achieve automatic start and stop of the glue applicator, a sensor is installed on baffle two. An adjustment groove is located on the upper part of baffle two near the glue applicator, allowing the sensor to be positioned inside baffle two. A bolt is threaded through the adjustment groove from the outside and connected to the sensor, thus fixing the sensor to the adjustment groove. Adjusting the tightness of the bolt adjusts the sensor's position in the adjustment groove. The sensor is then connected to the control system, using it to detect the position of the cardboard, thereby achieving automatic start and stop of the conveyor belt and glue applicator.

[0012] The automatic gluing device for cardboard box splicing provided by this utility model can realize the automatic gluing function of cardboard for splicing cardboard boxes. It can adjust the width of the gluing range, automatically perform positioning gluing, greatly improve the efficiency of the gluing process, and at the same time ensure the position of the cardboard is fixed during the gluing process to ensure the gluing effect. It also precisely controls the amount of glue used, avoiding excessive glue application in the gluing area, thus saving glue consumption and avoiding excessive glue affecting the bonding quality and drying time. Attached Figure Description

[0013] The present invention will now be described in further detail with reference to the accompanying drawings.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the overall structure of the glue applicator;

[0016] Figure 3 This is a schematic diagram of the overall structure of the glue application box;

[0017] Figure 4 This is a schematic diagram of the internal structure of the glue application box;

[0018] Figure 5 This is a schematic diagram of the baffle structure;

[0019] Figure 6 This is a schematic diagram of the drum structure;

[0020] The diagram shows: 1-Bracket; 2-Conveyor belt; 3-Apply glue; 31-Hydraulic rod; 32-Fixing plate; 33-Applying box; 34-Motor 1; 35-Moving groove; 36-Screw; 37-Glue injection tube; 38-Box body; 39-Inner liner; 310-Motor 2; 311-Drive gear; 312-Applying head; 313-Applying nozzle; 4-Baffle 1; 41-Support rod; 42-Ear plate; 5-Roller; 51-Fixing frame; 52-Stop block; 53-Slide rod; 6-Baffle 2; 61-Adjusting groove; 62-Sensor. Detailed Implementation

[0021] To further illustrate the concept of this utility model, the specific embodiments of this utility model will be further described below with reference to the accompanying drawings:

[0022] An automatic glue applicator for assembling cardboard boxes, such as Figure 1 As shown, it consists of a support frame 1, a conveyor belt 2, and an adhesive applicator 3. The conveyor belt 2 is a conventional conveyor belt in the prior art. The support frame 1 for installing and fixing the conveyor belt 2 is made according to the size of the conveyor belt 2, and the conveyor belt 2 is installed and fixed on the support frame 1.

[0023] The glue applicator 3 consists of hydraulic rods 31, a fixing plate 32, a glue applicator box 33, and a motor 34. Two hydraulic rods 31 are installed on either side of the bracket 1, positioned on the sides of the conveyor belt 2. The fixing plate 32 is a long strip with a long, narrow moving groove 35 in its center. Both ends of the fixing plate 32 are connected to the tops of the hydraulic rods 31, positioning it above the conveyor belt 2. The glue applicator box 33 is made according to the shape of the moving groove 35, allowing it to fit perfectly into the groove. A rotatable screw 36 is installed inside the moving groove 35. The motor 34 is fixed to the end of the fixing plate 32, providing a power connection between the motor 34 and the screw 36. A threaded hole is provided in the center of the glue applicator box 33. The box is installed inside the moving groove 35, with the screw 36 passing through the threaded hole. A glue injection tube 37 is connected to the top of the glue applicator box 33. Figure 2 As shown.

[0024] The glue application box 33 is composed of several parts, including a box body 38, an inner liner 39, a motor 310, a drive gear 311, and a glue application head 312. The inner liner 39 is hollow and installed inside the box body 38, with its position avoiding the screw 36. The glue application head 312 is divided into two sections: the upper end is gear-shaped, and the lower end is plate-shaped. A long strip-shaped glue application port 313 is opened at the lower end of the glue application head 312. The glue application head 312 is designed as a hollow structure, and an annular groove is provided on the upper side of the glue application head 312. The glue application head 312 is installed at the bottom of the glue application box 33 through the groove, allowing the glue application head 312 to rotate freely using the annular groove. A bearing can also be installed between the glue application head 312 and the glue application box 33 to increase rotational performance. Connect the glue injection tube 37 to the inner liner 39, and connect the lower end of the inner liner 39 to the glue application head 312, allowing the glue to enter the inner liner 39 through the glue injection tube 37 for temporary storage, and then be injected into the glue application head 312. Install the second motor 310 on the bottom inside the box 38, allowing the shaft of the second motor 310 to pass through the bottom of the box 38. Install the drive gear 311 on the shaft of the second motor 310, so that the drive gear 311 meshes with the upper end of the glue application head 312. Figure 3 , Figure 4 As shown.

[0025] Take two long strips as baffles 4. Bend one end of baffle 4 into an arc. Weld two support rods 41 to one side of the baffle 4 in the bending direction. The ends of the support rods 41 are threaded. On the front support 1 of the glue applicator 3 located on the conveyor belt 2, install two lugs 42 on each side. The position of the lugs 42 corresponds to the support rods 41. Make a hole in the middle of the lugs 42 and pass the support rods 41 through the lugs 42, so that baffle 4 is located between the two sets of lugs 42. At the same time, ensure that the bent parts of the two baffles 4 are in the direction of the conveyor belt inlet. Then, put a spring on the end of the support rod 41 and then put on a nut. Figure 5 As shown.

[0026] Two fixed brackets 51 are installed on both sides of the support 1 on both sides of the baffle 4. The fixed brackets 51 are perpendicular to the direction of movement of the conveyor belt 2. One bracket 1 is located in the middle of the baffle 4, and the other is close to the glue applicator 3. Take two rollers 5 and connect two stops 52 to both ends of the rollers 5. Weld a slide rod 53 onto the stop block 52 and make an external thread at the upper end of the slide rod 53. Install the two rollers 5 below the two fixed brackets 51 respectively. Make holes in the fixed brackets 51 corresponding to the positions of the slide rods 53. After fitting a spring on the slide rod 53, pass it into the hole from the lower end of the fixed bracket 51. Fit a nut on the threaded end of the slide rod 53. Figure 6 As shown.

[0027] Install baffles 6 on both sides of the rear support 1 of the glue applicator 3, symmetrically arranging them so that they are perpendicular to the conveyor belt 2. Install an adjustment groove 61 on the upper end of one of the baffles 6, positioning it close to the glue applicator 3. Take a sensor 62 and install it inside the adjustment groove 61. Connect the sensor 62 to the adjustment groove 61 from the outside using a bolt, threadedly connecting the sensor 62 and the bolt. Connect the sensor 62 to the control system. Figure 1 As shown.

[0028] When applying glue to cardboard, first adjust the width and bonding position of the cardboard, adjust the baffle 4 to the appropriate spacing, and adjust the position of the sensor 62. Then, set the working parameters of the glue applicator 33 through the control program, including the movement stroke of the glue applicator 33 and the angle of the glue applicator head 312. The glue applicator width can be adjusted by rotating the glue applicator head 312 using the motor 310. Then, conveyor belt 2 is started, and the cardboard is placed from the bent end of baffle 4. The cardboard's position is restricted by baffle 4, and it is pressed downwards by roller 5 during transport to prevent movement. When the cardboard reaches the position of trigger sensor 62, the control system stops conveyor belt 2. Then, hydraulic rod 31 is activated to control fixed plate 32 to press down, allowing glue applicator 312 to contact the cardboard. Glue is then injected into glue box 33 via glue injection tube 37. Simultaneously, motor 34 is started, causing screw 36 to move glue box 33. During this movement, glue is applied to the cardboard through glue nozzle 313. After the glue application process is complete, hydraulic rod 31 is reset, causing fixed frame 51 to rise. Simultaneously, motor 34 reverses to reset glue box 33, and conveyor belt 2 starts to deliver the cardboard to the next process. In actual production, baffle 6 can be fixed to bracket 1 using the fixing method of baffle 4, thus creating an adjustable function for all baffles.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Various modifications and variations can be made by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. made using the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic gluing device for assembling cardboard boxes, comprising a support (1), a conveyor belt (2), and a glue applicator (3), wherein the conveyor belt (2) is mounted on the support (1), and the glue applicator (3) is mounted in the middle of the support (1) and above the conveyor belt (2), characterized in that: The glue applicator (3) includes a hydraulic rod (31), a fixed plate (32), a glue applicator box (33), and a motor (34). There are two hydraulic rods (31) installed symmetrically on both sides of the bracket (1). The two ends of the fixed plate (32) are respectively connected to the top of the two hydraulic rods (31). A moving groove (35) is opened in the middle of the fixed plate (32). A screw (36) is rotatably connected in the moving groove (35). A screw hole is provided in the middle of the glue applicator box (33). The glue applicator box (33) is set in the moving groove (35). The screw (36) passes through the screw hole on the glue applicator box (33). The glue applicator box (33) is limited by the moving groove (35) and cannot rotate. The motor (34) is set on one side of the screw (36) of the fixed plate (32). The shaft of the motor (34) is connected to the screw (36). The top of the glue applicator box (33) is connected to the glue injection tube (37).

2. The automatic gluing device for cardboard box splicing according to claim 1, characterized in that: The glue application box (33) includes a box body (38), an inner liner (39), a second motor (310), a drive gear (311), and a glue application head (312). The inner liner (39) is located inside the box body (38) and avoids the screw (36). The glue application head (312) is rotatably located at the bottom of the box body (38). The inner liner (39) connects the glue injection tube (37) and the glue application head (312). The upper end of the glue application head (312) is gear-shaped and the lower end is plate-shaped. The glue application head (312) is hollow and has a long strip-shaped glue application port (313) at the lower end. The second motor (310) is located at the bottom inside the box body (38). The shaft of the second motor (310) passes through the lower end of the box body (38). The drive gear (311) is connected to the shaft of the second motor (310). The drive gear (311) meshes with the upper end of the glue application head (312).

3. The automatic gluing device for cardboard box splicing according to claim 2, characterized in that: The support (1) is also provided with baffles (4) on both sides. The baffles (4) are symmetrically arranged on the support (1). The baffles (4) are located in front of the glue applicator (3) and are perpendicular to the conveyor belt (2). The front ends of the two baffles (4) expand outward to form a trumpet shape.

4. The automatic gluing device for cardboard box splicing according to claim 3, characterized in that: Two support rods (41) are provided on the outer side wall of the baffle (4). The end of the support rod (41) is provided with external thread. The bracket (1) is provided with ear piece (42). The support rod (41) passes through the ear piece (42) to install the baffle (4) on the bracket (1). A nut and a spring are sleeved on the end of the support rod (41). The spring is located between the nut and the ear piece (42).

5. The automatic gluing device for cardboard box splicing according to claim 4, characterized in that: A roller (5) is provided above the conveyor belt (2) between the baffles (4). The roller (5) is perpendicular to the moving direction of the conveyor belt (2). A fixed frame (51) is provided above the roller (5). The two ends of the fixed frame (51) are connected to the two sides of the support (1). A stop block (52) is provided at both ends of the roller (5). A slide rod (53) is provided above the stop block (52). The upper end of the slide rod (53) is provided with an external thread. The upper end of the slide rod (53) passes through the support (1) and is fitted with a nut. A spring is fitted on the slide rod (53) between the stop block (52) and the support (1).

6. The automatic gluing device for cardboard box splicing according to claim 5, characterized in that: Two rollers (5) are provided, one near the glue applicator (3) and the other located in the middle of the baffle (4).

7. The automatic gluing device for cardboard box splicing according to claim 6, characterized in that: Two baffles (6) are provided on both sides of the support (1) at the rear end of the glue applicator (3). The two baffles (6) are symmetrically arranged on both sides of the support (1) and perpendicular to the conveyor belt (2).

8. The automatic gluing device for cardboard box splicing according to claim 7, characterized in that: The baffle 2 (6) is provided with an adjustment groove (61) at the upper end near the glue applicator (3). A sensor (62) is provided on the adjustment groove (61). The sensor (62) is located inside the baffle 2 (6). A bolt is threaded through the adjustment groove (61) from the outside to connect the sensor (62) and fix the sensor (62) on the adjustment groove (61). The sensor (62) is connected to the control system.

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