Napkin weight detecting and removing device

Abstract

The utility model belongs to the technical field of napkin packaging, and particularly relates to a napkin weight detecting and removing device which comprises a rack, a push-pull assembly and a roller conveyor, L-shaped plates which are arranged in an opposite state are welded to the two sides of the top of the rack, transverse shafts are rotationally installed on the two sides of the opposite faces of the two L-shaped plates, and synchronous wheels are installed at the two ends of the two transverse shafts. A synchronous belt is mounted between the synchronous wheels on the two sides; an electronic scale is fixed to one side of the rack, an air cylinder is installed at the weighing end of the electronic scale, and a jacking frame is fixedly installed at the movable end of the air cylinder. According to the napkin weight detecting and removing device, when a sensor detects packaging boxes, weighing judgment is conducted on each packaging box through cooperation of an electronic scale, an air cylinder and a jacking frame, the situation of missing weighing is avoided, if the situation that the packaging boxes are not enough exists, the packaging boxes are directly pushed to a roller conveyor to be conveyed away, and therefore the packaging boxes are not damaged. Therefore, products with unqualified weight are prevented from leaving the factory.

Description

Technical Field

[0001] This utility model relates to the field of napkin packaging technology, and in particular to a napkin paper packaging box weight detection and rejection device. Background Technology

[0002] Napkins are paper used specifically for wiping during meals; they are also called table paper. Depending on the material and purpose, napkins can be divided into several types, such as dry napkins, wet napkins, facial tissues, and wet wipes. Ensuring the accurate number of packs of napkins in each box is crucial during the production and packaging process.

[0003] During the packaging and boxing process of napkins, due to equipment or personnel factors, there may be instances of missing napkins in each box. In the existing packaging process, the napkin packs are usually simply placed into the box and then the box is sealed without weight checks, making it impossible to detect missing packs in a timely manner. When these boxes of napkins with missing packs are delivered to customers, they are often dissatisfied due to the insufficient quantity, leading to customer complaints. Utility Model Content

[0004] In order to overcome the defects of the prior art mentioned above, the inventors conducted in-depth research and, after a great deal of creative work, completed this utility model.

[0005] Specifically, the technical problem to be solved by this utility model is to provide a napkin weight detection and rejection device to solve the technical problem that the current napkin packing process does not have a weight detection function, and that missing packs cannot be detected.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A napkin weight detection and rejection device includes a frame, a push-pull assembly and a roller conveyor. L-shaped plates arranged in a relative position are welded to both sides of the top of the frame. Horizontal shafts are rotatably installed on both sides of the opposite faces of the two L-shaped plates. Synchronous pulleys are installed at both ends of the two horizontal shafts, and a synchronous belt is installed between the synchronous pulleys on both sides.

[0008] An electronic scale is fixed to one side of the frame. A cylinder is installed on the weighing end of the electronic scale. A lifting frame is fixedly installed on the movable end of the cylinder, and the lifting frame is located between two synchronous belts.

[0009] The frame is located between the pushing end of the push-pull assembly and the loading end of the roller conveyor, while the electronic scale is located between the opposite surfaces of the push-pull assembly and the roller conveyor.

[0010] As an improved technical solution, multiple adjustment brackets are installed on the outer side of the L-shaped plate near the push-pull assembly. A baffle plate is installed on the L-shaped plate through the adjustment brackets. A Z-shaped plate with a fixed cavity is installed on the end of the baffle plate near the electronic scale. A sensor is installed inside the fixed cavity of the Z-shaped plate.

[0011] As an improved technical solution, the push-pull assembly includes a mounting frame, a frame plate is fixed to the top of the mounting frame and the side near the L-shaped plate, an electric push rod is installed between the top of the mounting frame and the frame plate, and a push plate is fixedly connected to the movable end of the electric push rod.

[0012] As an improved technical solution, guide rods are welded to both ends of the push plate near the frame plate, and the frame plate is provided with coaxial sliding holes at the positions of the guide rods. A positioning slide is welded to the side of the frame plate away from the push plate and coaxial with the sliding holes, and the guide rod passes through the inside of the positioning slide sleeve.

[0013] As an improved technical solution, the adjustment frame includes a T-shaped block fixed to the outer wall of the L-shaped plate, an adjustment rod 1 is provided on the T-shaped block, an adjustment rod 2 is provided at the top of the adjustment rod 1, and the end of the adjustment rod 2 near the L-shaped plate is fixedly connected to the L-shaped plate.

[0014] As an improved technical solution, the top of the T-block has a through hole coaxial with the adjusting rod, and one side of the T-block has a threaded hole communicating with the through hole. The T-block is threaded with a locking bolt, and the tail end of the locking bolt abuts against the outer wall surface of the adjusting rod.

[0015] As an improved technical solution, an adjusting seat is fixed at the end of the adjusting rod away from the T-block. The adjusting seat has a through hole two that is coaxial with the adjusting rod two. The top of the adjusting seat has a threaded hole two that communicates with the through hole two. A locking bolt two is threadedly installed on the adjusting seat through the threaded hole two, and the tail end of the locking bolt two abuts against the outer wall surface of the adjusting rod two.

[0016] After adopting the above technical solution, the beneficial effects of this utility model are:

[0017] 1. This utility model uses baffles to limit the placement of packaging boxes, which makes it easier to place the packaging boxes in the middle of two synchronous belts and ensures that each packaging box can be quickly placed in the same position for transportation, facilitating subsequent operations. At the same time, the horizontal and vertical positions of the baffles can be adjusted according to the size of the packaging boxes, so that the baffles can effectively guide packaging boxes of different sizes.

[0018] 2. In this utility model, when the sensor detects a packaging box, the electronic scale, cylinder and lifting frame work together to weigh each packaging box to avoid missing any boxes. If a box is found to be underweight, it is directly pushed onto the roller conveyor to prevent it from entering the next process, thus preventing products that do not meet the weight requirements from leaving the factory. It also enables inspection and rejection without stopping the machine, ensuring work efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0020] Figure 1 This is a schematic diagram of the overall structure of the napkin weight detection and rejection device of this utility model.

[0021] Figure 2 This is a schematic diagram of the structure of an electronic scale for a napkin weight detection and rejection device according to this utility model.

[0022] Figure 3 This is a schematic diagram of the push-pull assembly of a napkin weight detection and rejection device according to this utility model.

[0023] Figure 4 This is a schematic diagram of the baffle plate of the napkin weight detection and rejection device of this utility model.

[0024] Figure 5 This is a schematic diagram of the adjustment frame of the napkin weight detection and rejection device of this utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Frame; 11. L-shaped plate; 2. Horizontal shaft; 21. Synchronous pulley; 22. Synchronous belt; 3. Baffle plate; 31. Z-shaped plate; 32. Sensor; 4. Adjusting frame; 41. T-block; 42. Locking bolt one; 43. Adjusting rod one; 44. Adjusting seat; 45. Locking bolt two; 46. Adjusting rod two; 5. Electronic scale; 51. Cylinder; 52. Lifting frame; 6. Push-pull assembly; 61. Mounting frame; 62. Frame plate; 63. Electric push rod; 64. Guide rod; 65. Push plate; 7. Roller conveyor. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0029] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0030] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0031] like Figures 1 to 5 As shown in the figure, this embodiment provides a napkin weight detection and rejection device. This napkin weight detection and rejection device includes a frame 1, a push-pull assembly 6 and a roller conveyor 7. L-shaped plates 11 are welded to both sides of the top of the frame 1 and are arranged in a relative position. Horizontal shafts 2 are rotatably installed on both sides of the opposite faces of the two L-shaped plates 11. The drive end of a servo motor is fixedly connected to the shaft end of one horizontal shaft 2. The servo motor is fixed on the outer wall of the L-shaped plate 11. Synchronous pulleys 21 are installed at both ends of the two horizontal shafts 2. A synchronous belt 22 is installed between the two synchronous pulleys 21.

[0032] An electronic scale 5 is fixed on one side of the frame 1, and a display is mounted on the electronic scale 5 via a support column. A cylinder 51 is mounted on the weighing end of the electronic scale 5, and a lifting frame 52 is fixedly mounted on the movable end of the cylinder 51. The lifting frame 52 is located between two synchronous belts 22. A buzzer is mounted on the electronic scale 5 via a bracket.

[0033] The frame 1 is located between the pushing end of the push-pull assembly 6 and the loading end of the roller conveyor 7. Meanwhile, the electronic scale 5 is located between the opposite sides of the push-pull assembly 6 and the roller conveyor 7.

[0034] When sensor 32 detects a package, the electronic scale 5, cylinder 51, and lifting frame 52 work together to weigh each package to prevent omissions. If a package is found to be underweight, it is pushed directly onto roller conveyor 7 to prevent it from entering the next process, thus preventing products that do not meet the weight requirements from leaving the factory. This also allows for inspection and rejection without stopping the machine, ensuring work efficiency.

[0035] like Figure 1 and Figure 4 As shown in the figure, in this embodiment, multiple adjusting brackets 4 are installed on the outer side of the L-shaped plate 11 near the push-pull assembly 6. A baffle plate 3 is installed on the L-shaped plate 11 through the adjusting brackets 4. A Z-shaped plate 31 with a fixing cavity is installed on the end of the baffle plate 3 near the electronic scale 5. A sensor 32 is installed inside the fixing cavity of the Z-shaped plate 31. When the packaging box is placed between the two synchronous belts 22, one side of the packaging box is attached to the baffle plate 3. The baffle plate 3 limits the position of the packaging box, which makes it easier to place the packaging box in the middle of the two synchronous belts 22. It also ensures that each packaging box can be quickly placed in the same position for transportation, which facilitates subsequent operations.

[0036] like Figure 1 and Figure 3 As shown in the figure, in this embodiment, the push-pull assembly 6 includes a mounting frame 61, a frame plate 62 is fixed on the top of the mounting frame 61 and on the side near the L-shaped plate 11, an electric push rod 63 is installed between the top of the mounting frame 61 and the frame plate 62, and the movable end of the electric push rod 63 is located on the side of the frame plate 62 near the L-shaped plate 11, and a push plate 65 is fixedly connected to the movable end of the electric push rod 63.

[0037] like Figure 3 As shown, in this embodiment, guide rods 64 are welded to both ends of the push plate 65 near the frame plate 62, and the frame plate 62 is provided with a coaxial sliding hole at the position of the guide rod 64. A positioning slide is welded to the side of the frame plate 62 away from the push plate 65 and coaxial with the sliding hole, and the guide rod 64 passes through the inside of the positioning slide sleeve.

[0038] like Figure 5 As shown, in this embodiment, the adjustment frame 4 includes a T-shaped block 41 fixed on the outer wall of the L-shaped plate 11. An adjustment rod 43 is provided on the T-shaped block 41, and an adjustment rod 46 is provided at the top of the adjustment rod 43. The end of the adjustment rod 46 near the L-shaped plate 11 is fixedly connected to the L-shaped plate 11.

[0039] like Figure 5As shown, in this embodiment, the top of the T-block 41 is provided with a through hole coaxial with the adjusting rod 43, and the adjusting rod 43 passes through the interior of the through hole. One side of the T-block 41 is provided with a threaded hole connected to the through hole. The T-block 41 is threaded with a locking bolt 42, and the tail end of the locking bolt 42 abuts against the outer wall surface of the adjusting rod 43.

[0040] like Figure 5 As shown, in this embodiment, an adjusting seat 44 is fixed to the end of the adjusting rod 43 away from the T-block 41. The adjusting seat 44 has a through hole 2 coaxial with the adjusting rod 46, and the adjusting rod 46 passes through the interior of the through hole 2. The top of the adjusting seat 44 has a threaded hole 2 connected to the through hole 2. The adjusting seat 44 is threaded with a locking bolt 2 45 through the threaded hole 2, and the tail end of the locking bolt 2 45 abuts against the outer wall surface of the adjusting rod 46.

[0041] The position of the baffle plate 3 can be adjusted according to the size of the packaging box. The specific process is as follows:

[0042] The rotating locking bolt 42, through the threaded transmission action between itself and the threaded hole 41 on the T-block 41, releases the locking bolt 42 from contact with the adjusting rod 43, thereby allowing the height of the adjusting rod 43 to be adjusted vertically. After the adjustment is completed, the locking bolt 42 can be rotated in the opposite direction to lock the adjusting rod 43, thereby adjusting the longitudinal height of the baffle plate 3.

[0043] The rotating locking bolt 45, through the threaded transmission action between itself and the threaded hole 2 on the locking bolt 42, releases the locking bolt 45 from contact with the adjusting rod 46. After adjusting the adjusting rod 46 horizontally, rotating the locking bolt 45 in the opposite direction locks the adjusting rod 46, thereby adjusting the lateral position of the adjusting rod 43 and the baffle plate 3. This allows for adaptive adjustment of the lateral and longitudinal positions of the baffle plate 3 according to the size of the packaging box, enabling the baffle plate 3 to effectively guide packaging boxes of different sizes.

[0044] When using the packaging box, when placing the packaging box between the two timing belts 22, one side of the packaging box is attached to the baffle plate 3, and the baffle plate 3 limits the position of the packaging box.

[0045] When sensor 32 detects a package in front of it, it controls the timing belt 22 to stop rotating and causes cylinder 51 to extend and lift the package from the bottom through the lifting frame 52, so that the package is removed from the timing belt 22. At this time, the package is weighed. If the weighed weight is consistent with the full weight, cylinder 51 shortens and puts the package back on the timing belt 22. The timing belt 22 continues to rotate and continues to transport the package.

[0046] If the weighed weight is less than the full weight, it means that there are missing packages in the packaging box. At this time, the buzzer will sound an alarm. If there are missing packages in the packaging box, the electric push rod 63 will extend to drive the push plate 65 to push the packaging box off the lifting frame 52 and onto the roller conveyor 7, where it will be transported away by the roller conveyor 7.

[0047] Then the push plate 65 and the lifting frame 52 are reset, and the synchronous belt 22 continues to rotate to wait for the next packaging box.

[0048] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. A napkin weight detection and rejection device, characterized in that: The assembly includes a frame (1), a push-pull assembly (6), and a roller conveyor (7). The top of the frame (1) has L-shaped plates (11) welded on both sides, which are arranged in a relative position. A horizontal shaft (2) is rotatably installed on both sides of the opposite face of the two L-shaped plates (11). A synchronous pulley (21) is installed at both ends of the two horizontal shafts (2). A synchronous belt (22) is installed between the two synchronous pulleys (21). An electronic scale (5) is fixed on one side of the frame (1). A cylinder (51) is installed on the weighing end of the electronic scale (5). A lifting frame (52) is fixedly installed on the movable end of the cylinder (51), and the lifting frame (52) is located between two synchronous belts (22). The frame (1) is located between the pushing end of the push-pull assembly (6) and the loading end of the roller conveyor (7). Meanwhile, the electronic scale (5) is located between the opposite surfaces of the push-pull assembly (6) and the roller conveyor (7).

2. The napkin weight detection and rejection device according to claim 1, characterized in that: Multiple adjustment brackets (4) are installed on the outer side of the L-shaped plate (11) near the push-pull assembly (6). A baffle plate (3) is installed on the L-shaped plate (11) through the adjustment brackets (4). A Z-shaped plate (31) with a fixed cavity is installed on the end of the baffle plate (3) near the electronic scale (5). A sensor (32) is installed inside the fixed cavity of the Z-shaped plate (31).

3. The napkin weight detection and rejection device according to claim 2, characterized in that: The push-pull assembly (6) includes a mounting bracket (61), a frame plate (62) is fixed on the top of the mounting bracket (61) and on the side near the L-shaped plate (11), an electric push rod (63) is installed between the top of the mounting bracket (61) and the frame plate (62), and a push plate (65) is fixedly connected to the movable end of the electric push rod (63).

4. The napkin weight detection and rejection device according to claim 3, characterized in that: Both ends of the push plate (65) near the frame plate (62) are welded with guide rods (64), and the frame plate (62) is provided with a coaxial sliding hole at the position of the guide rod (64). The side of the frame plate (62) away from the push plate (65) is welded with a positioning slide rail coaxially with the sliding hole, and the guide rod (64) passes through the inside of the positioning slide sleeve.

5. The napkin weight detection and rejection device according to claim 4, characterized in that: The adjustment frame (4) includes a T-shaped block (41) fixed on the outer wall of the L-shaped plate (11). An adjustment rod (43) is provided on the T-shaped block (41). An adjustment rod (46) is provided at the top of the adjustment rod (43), and the end of the adjustment rod (46) near the L-shaped plate (11) is fixedly connected to the L-shaped plate (11).

6. The napkin weight detection and rejection device according to claim 5, characterized in that: The top of the T-block (41) is provided with a through hole coaxial with the adjusting rod (43), and a threaded hole connected to the through hole is provided on one side of the T-block (41). The T-block (41) is threaded with a locking bolt (42) through the thread, and the tail end of the locking bolt (42) abuts against the outer wall surface of the adjusting rod (43).

7. The napkin weight detection and rejection device according to claim 6, characterized in that: An adjusting seat (44) is fixed at one end of the adjusting rod (43) away from the T-block (41). The adjusting seat (44) has a through hole (2) coaxial with the adjusting rod (46). The top of the adjusting seat (44) has a threaded hole (2) communicating with the through hole (2). The adjusting seat (44) is threaded with a locking bolt (25) through the threaded hole (2), and the tail end of the locking bolt (25) abuts against the outer wall surface of the adjusting rod (26).

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