Limiting assembly of packaging box bottom folding machine

Abstract

The utility model relates to a limit assembly of a packing box bottom folding machine, which is mounted on a support assembly to keep the placing state of a packing box, and comprises a first pivot, two swing rods, two adapter plates, two limit rods and an action mechanism, the first pivot is installed on the inner side face of the first supporting plate or the second supporting plate. The two swing rods are rotatably mounted on the first pivot and are symmetrically arranged; the two adapter plates are mounted at the upper end parts of the swing rods in a one-to-one correspondence manner; the two limiting rods are mounted on the adapter plate in a one-to-one correspondence manner and are arranged in parallel; and the action mechanism is connected with the lower end parts of the two swing rods and is used for driving the swing rods to move towards each other or away from each other. The swing rods can move in the same direction or in the back-to-back direction, and then the limiting rods are driven to move in the same direction or in the back-to-back direction, so that the two limiting rods make contact with a packaging box, and the effect of limiting the packaging box is achieved. And moreover, the contact size of the limiting rods and the packaging box is large, so that the force acting on the packaging box can be dispersed, and the packaging box is prevented from being damaged.

Description

Technical Field

[0001] The utility model belongs to the technical field of packaging equipment and relates to a limiting component, in particular to a limiting component of a packaging box bottom folding machine. Background Art

[0002] With the rapid development of modern industry and the continuous improvement of people's living standards, people's demand for packaging boxes (the packaged box body is in a cubic shape) will continue to increase. In the process of using packaging boxes to pack goods, it is usually done manually, which mainly depends on personal experience, resulting in low docking accuracy of the packaging boxes and poor packaging efficiency.

[0003] The Chinese utility model patent with application number 201820977972.X discloses a packaging box clamping mechanism, including a first clamping part and a second clamping part; the first clamping part includes a first clamping part fixing plate, a first conveyor belt bracket and a first clamping part conveyor belt; the second clamping part includes a second clamping part fixing plate, a second conveyor belt bracket and a second clamping part conveyor belt; if the packaging box is conveyed on the first conveyor belt, before the packaging box reaches the toothed transition plate, the first clamping part and the second clamping part are used to clamp the packaging box and convey the packaging box to the second conveyor belt through the toothed transition plate. Therefore, when the packaging box is transported to the toothed transition plate by the first conveyor belt, the packaging box clamping mechanism will clamp the packaging box before the packaging box reaches the toothed transition plate, and cross the gap between the first conveyor belt and the toothed transition plate under the action of the belt teeth, the first clamping part conveyor belt and the second clamping part conveyor belt, thereby preventing the packaging box from tilting or being stuck by the toothed transition plate. The packaging box clamping mechanism with such a structure is prone to damage to the surface of the packaging box during use. Summary of the invention

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a limiting component for a packaging box bottom folding machine.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a limit assembly of a packaging box bottom folding machine, which is installed on a supporting assembly to maintain the placement state of the packaging box, comprising a first pivot, two rocker arms, two adapter plates, two limit rods and an action mechanism; the first pivot is installed on the inner side surface of the first support plate; the two rocker arms are rotatably installed on the first pivot and are symmetrically arranged; the two adapter plates are installed one-to-one on the upper end of the rocker arm; the two limit rods are installed one-to-one on the adapter plate and are arranged in parallel; the action mechanism is connected to the lower ends of the two rocker arms for driving them to move toward or away from each other.

[0006] Optimally, the rocker arm includes a first straight rod portion whose middle portion is rotatably connected to the first pivot, an outer arc portion formed at the upper end of the first straight rod portion, and a second straight rod portion formed at the outer end of the outer arc portion and extending toward the limit rod, and the adapter plate is installed at the outer end of the second straight rod portion.

[0007] Furthermore, the action mechanism includes a fixed folding plate fixed on the outer side of the first support plate, a first cylinder installed on the fixed folding plate, upper and lower sliding rails fixed on the outer side of the first support plate and located below the fixed folding plate, a connecting plate slidably installed on the upper and lower sliding rails through a slider, a second pivot that passes through the first support plate and the connecting plate, a first connecting rod rotatably installed on the second pivot and connected to the first cylinder, and two adapter blocks rotatably installed on the second pivot and pivotally connected to the lower end of the first straight rod portion.

[0008] Optimally, the support assembly includes a support top frame, a support bottom frame arranged below the support top frame, a plurality of support vertical frames installed between the support top frame and the support bottom frame, and a plurality of rollers installed at the bottom of the support bottom frame.

[0009] Compared with the prior art, the advantages of the present invention are: the limit assembly of the packaging box bottom folding machine of the present invention utilizes the cooperation of structures such as the rocker arm, the limit rod and the action mechanism to realize the movement of the rocker arm towards or away from each other, thereby driving the limit rods to move towards or away from each other, so that the two limit rods are in contact with the packaging box, thereby limiting the packaging box; moreover, the contact size between the limit rod and the packaging box is large, which will disperse the force acting on the packaging box and avoid damage to the packaging box. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the limiting assembly of the bottom folding machine for packaging boxes of the utility model;

[0011] Figure 2 This is a structural schematic diagram of the limiting component of the packaging box bottom folding machine of the utility model from another perspective. DETAILED DESCRIPTION

[0012] The utility model is further described below in conjunction with the embodiments shown in the accompanying drawings.

[0013] like Figure 1 and Figure 2 The limiting assembly of the packaging box bottom folding machine shown is installed on the supporting assembly 1 to maintain the placement state of the packaging box, and mainly includes a first pivot 30, two rocker arms 31, two adapter plates 32, two limiting rods 33 and an action mechanism 34.

[0014] The first pivot 30 is mounted on the inner side of the first support plate. There are two swing rods 31, which are rotatably mounted on the first pivot 30 and symmetrically arranged (symmetrically about the vertical plane, and the symmetry plane passes through the axis of the first pivot 30); that is, the swing rod 31 can rotate relative to the first support plate through the first pivot 30. There are also two adapter plates 32, which are mounted on the upper end of the swing rod 31 in a one-to-one correspondence; two limit rods 33 are mounted on the adapter plates 32 in a one-to-one correspondence and are arranged in parallel; the action mechanism 34 is connected to the lower ends of the two swing rods 31 to drive them to move toward or away from each other. The action mechanism 34 can be used to drive the swing rod 31 to move away from each other, so that the two limit rods 33 are located on both sides of the packaging box (put in the packaging box); then the action mechanism 34 works or resets, and then drives the swing rod 31 to move toward each other, so that the two limit rods 33 are against the two sides of the packaging box to achieve the limit or clamping of the packaging box, avoid the packaging box from tilting and improve the folding bottom quality. Moreover, the contact dimension between the limiting rod 33 and the packaging box is relatively large, which can disperse the force acting on the packaging box and avoid damaging the packaging box.

[0015] In this embodiment, the swing rod 31 includes a first straight rod portion 311 rotatably connected to the first pivot 30 in the middle, an outer arc portion 312 formed at the upper end of the first straight rod portion 311 (the formation method is usually conventional integrated molding), and a second straight rod portion 313 formed at the outer end of the outer arc portion 312 and extending toward the limit rod 33, and the adapter plate 32 is installed at the outer end of the second straight rod portion 313. Since the first pivot 30 is eccentrically arranged relative to the swing rod 31, such an arrangement can maximize the stroke of the adapter plate 32 when the first straight rod portion 311 rotates slightly, so that the bottom folding machine of the present application is applicable to packaging boxes of different sizes as much as possible, thereby increasing the application range of the bottom folding machine.

[0016] The action mechanism 34 includes a fixed folding plate 340, a first cylinder 341, a first connecting rod 342, a connecting plate 343, a slider 344, upper and lower slide rails 345, and a second pivot 346. The fixed folding plate 340 is fixed to the outer side of the first support plate; the first cylinder 341 is installed on the fixed folding plate 340; the upper and lower slide rails 345 are also fixed to the outer side of the first support plate and are located below the fixed folding plate 340; the connecting plate 343 is slidably installed on the upper and lower slide rails 345 through the slider 344; the second pivot 346 penetrates the first support plate (in this embodiment, a corresponding position of the first support plate is provided with an avoidance slot, and the second pivot 346 passes through the avoidance slot) and penetrates the connecting plate 343. In this way, the first connecting rod 342 is rotatably mounted on the second pivot 346 and connected to the first cylinder 341 (the first connecting rod 342 is located on the outside of the first support plate). When the first cylinder 341 is working, it can drive the connecting plate 343 to slide up and down on the upper and lower slide rails 345. In addition, there are two adapter blocks 347, which are rotatably mounted on the second pivot 346 (the adapter block 347 is located on the inside of the first support plate) and are pivotally connected to the lower end of the first straight rod 311. When the connecting plate 343 moves up and down, it will drive the synchronous movement of the second pivot 346, and then drive the swing rod 31 to move toward or away from each other. The action mechanism 34 with such a structure is conducive to improving the accuracy and reliability of the limit assembly.

[0017] In this embodiment, the support assembly 1 includes a support top frame 11, a support bottom frame 12, a support bottom frame 13 and rollers 14. The support bottom frame 13 is arranged below the support top frame 11; there are multiple groups of support vertical frames 12 (2 to 4 groups can be selected as needed), which are installed between the support top frame 11 and the support bottom frame 13 in a conventional manner; there are multiple rollers 14 (2 to 4 can be selected as needed), which are installed at the bottom of the support bottom frame 13. In addition, a box plate can be installed on the outer surface of the support vertical frame 12, so that the support assembly 1 becomes a box structure with an open top. In this embodiment, the first support plate is installed on the support top frame 11 and the support bottom frame 12, so that it has a larger size and has a larger layout space.

[0018] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A limiting assembly of a packaging box bottom folding machine, which is mounted on a supporting assembly (1) to maintain the placement state of the packaging box, characterized in that: The invention comprises a first pivot (30), two rocking rods (31), two adapter plates (32), two limit rods (33) and an action mechanism (34); the first pivot (30) is mounted on the inner side surface of the first support plate; the two rocking rods (31) are rotatably mounted on the first pivot (30) and are symmetrically arranged; the two adapter plates (32) are mounted on the upper ends of the rocking rods (31) in a one-to-one correspondence; the two limit rods (33) are mounted on the adapter plates (32) in a one-to-one correspondence and are arranged in parallel; the action mechanism (34) is connected to the lower ends of the two rocking rods (31) and is used to drive them to move toward or away from each other.

2. The limiting assembly of the bottom folding machine for packaging box according to claim 1 is characterized in that: The swing rod (31) comprises a first straight rod portion (311) whose middle portion is rotatably connected to the first pivot (30), an outer arc portion (312) formed at the upper end of the first straight rod portion (311), and a second straight rod portion (313) formed at the outer end of the outer arc portion (312) and extending toward the limiting rod (33), and the adapter plate (32) is mounted on the outer end of the second straight rod portion (313).

3. The limiting assembly of the bottom folding machine for packaging box according to claim 2, characterized in that: The action mechanism (34) comprises a fixed folding plate (340) fixed on the outer side of the first support plate, a first cylinder (341) mounted on the fixed folding plate (340), an upper and lower sliding rail (345) fixed on the outer side of the first support plate and located below the fixed folding plate (340), a connecting plate (343) slidably mounted on the upper and lower sliding rail (345) via a slider (344), a second pivot (346) penetrating the first support plate and the connecting plate (343), a first connecting rod (342) rotatably mounted on the second pivot (346) and connected to the first cylinder (341), and two transfer blocks rotatably mounted on the second pivot (346) and pivotally connected to the lower end of the first straight rod portion (311).

4. The limiting assembly of the bottom folding machine for packaging boxes according to claim 1, characterized in that: The support assembly (1) comprises a support top frame (11), a support bottom frame (13) arranged below the support top frame (11), a plurality of groups of support vertical frames (12) installed between the support top frame (11) and the support bottom frame (13), and a plurality of rollers (14) installed at the bottom of the support bottom frame (13).

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