Fixing frame for detecting bonding strength of paperboard

Abstract

The utility model relates to the technical field of measuring the adhesive force between materials, and discloses a fixing frame for detecting the adhesive strength of a paperboard, which comprises a first supporting body and a second supporting body which are arranged in a central symmetry manner, and a first supporting plate and a second supporting plate which are opposite to the first supporting body and the second supporting body are respectively provided with a short nail and an adjusting assembly. The adjusting assembly comprises a shear shank, the short nail is connected to the center hinge position of the shear shank, the device further comprises a driving assembly for driving the shear shank to extend or shorten, and when the shear shank extends or shortens, the short nail can move in the extending or shortening direction of the shear shank. The shear shank is connected with the short nails, the arrangement distance of the short nails is adjusted by controlling extension and shortening of the shear shank, and the phenomenon that the distance of the short nails on an existing fixing base is fixed and cannot be adjusted according to the corrugation distance of a detected corrugated board is optimized; and the purpose of fixing the arris paperboards of various models by only one fixing device is achieved.

Description

Technical Field

[0001] The utility model relates to the field of measuring the adhesion between materials, in particular to a fixing rack for detecting the bonding strength of cardboard. Background Technique

[0002] Before transportation, the completed cigarette boxes need to be stacked centrally using cigarette packs made of corrugated cardboard. Corrugated cardboard is formed by bonding a face paper, a lining paper, a core paper, and corrugated paper processed into a corrugated shape. According to the usage requirements, multiple layers of corrugated shapes can be designed inside. Commonly used cigarette packs are made of single-layer corrugated cardboard, and a device for detecting the bonding strength of corrugated cardboard needs to be used for detection before use. The bonding strength of corrugated cardboard is an important indicator for detecting the physical performance strength of corrugated cartons, which reflects the bonding fastness between the paper surface of a certain length of corrugated cardboard and the corrugated base paper. Whether the bonding is tight and firm, and whether the strength meets the requirements will directly affect the use effect of corrugated cardboard. If the cardboard is not firmly bonded, the strength of the produced corrugated cartons will be insufficient, and peeling is likely to occur between layers during use, directly leading to a decrease in the earthquake resistance and compressive strength of the finished cartons, and easy damage during stacking and transportation, resulting in economic losses.

[0003] Existing corrugated cardboard detection devices usually need to be equipped with multiple fixing racks of different models with different short nail spacings to fix the corrugated paper to meet the waveform spacing requirements of different waveform corrugated cigarette packs. The short nail spacing on a single fixing rack cannot be adjusted. In terms of manufacturing cost, multiple fixing racks need to be produced for combined use, and the purpose of detecting multiple corrugated cardboard with different corrugation spacings using only one fixing rack cannot be achieved, increasing the manufacturing cost. Content of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide a fixing rack for detecting the bonding strength of cardboard, which can solve the problem that multiple fixing racks need to be configured to detect cigarette packs with different spacing corrugations.

[0005] The utility model solves the above technical problems through the following technical means:

[0006] A fixing device for detecting the bonding strength of cardboard, including a first support body and a second support body symmetrically arranged at the center. On the first support plate and the second support plate opposite to each other of the first support body and the second support body, short nails and adjusting components are respectively arranged. The adjusting component includes a scissors frame. The short nail is connected to the central hinge of the scissors frame. The device further includes a driving component for driving the scissors frame to extend or contract. When the scissors frame extends or contracts, the short nail can move along the extending or contracting direction of the scissors frame.

[0007] Furthermore, a first cover body and a second cover body are provided on the first support plate corresponding to the scissors frame, an exit groove is reserved between the first cover body and the second cover body corresponding to the short nail, and a sliding groove is provided on the first support plate corresponding to the position of the short nail, one end of the short nail is slidably connected to the sliding groove, and the other end passes through the exit groove.

[0008] Furthermore, the driving assembly includes a screw rod which is transmission-connected to the scissors frame, and the scissors frame is provided with opposite internal threads at two connection points corresponding to the screw rod.

[0009] Furthermore, the driving assembly includes a hydraulic rod transmission-connected to the scissor frame.

[0010] Furthermore, positioning rods are arranged on the third supporting plate and the fourth supporting plate opposite to the first supporting body and the second supporting body, and connecting holes are arranged on the first supporting plate and the second supporting plate corresponding to the positioning rods.

[0011] Furthermore, the driving assembly further comprises a bolt, and one end of the screw rod away from the third supporting plate passes through the first cover body and is connected to the bolt, and a corresponding through hole is provided on the first cover body at a position corresponding to the bolt.

[0012] Beneficial effects of the utility model:

[0013] 1. The present application uses a scissors frame to connect with short nails, and adjusts the arrangement spacing of the short nails by controlling the extension and shortening of the scissors frame, thereby optimizing the phenomenon that the short nail spacing on the existing fixing seat cannot be adjusted according to the corrugation spacing of the corrugated cardboard, and achieves the purpose of fixing various types of corrugated cardboard with only one fixing frame.

[0014] 2. This application only requires rotating the bolt before use to adjust the arrangement spacing of the short nails. The adjustment method is simple, fast and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the fixing device for testing the bonding strength of paperboards of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the first support body of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the adjustment component and the drive component of the utility model;

[0018] in,

[0019] 10. First support body; 11. First support plate; 12. First cover body; 13. Second cover body; 14. Through slot; 15. Slide slot; 16. Third support plate; 17. Through hole; 20. Second support body; 21. Second support plate; 22. Fourth support plate; 23. Positioning rod; 24. Connecting hole; 30. Short nail; 40. Adjustment assembly; 41. Scissors frame; 50. Drive assembly; 51. Screw rod; 53. Bolt. DETAILED DESCRIPTION

[0020] The following describes the implementation of the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. It should be noted that the illustrations provided in the following embodiments are only for exemplary descriptions, and they are only schematic diagrams, not physical diagrams, and cannot be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts in the figures may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the figures may be omitted.

[0021] The same or similar numbers in the figures of the embodiments of the present invention correspond to the same or similar parts. In the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "back", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the figures, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the figures are only used for illustrative purposes and cannot be understood as limitations on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0022] like Figure 1-2 As shown, the present application provides a fixing frame for testing the bonding strength of cardboard, comprising a first support body 10 and a second support body 20 arranged symmetrically with respect to the center. The first support body 10 and the second support body 20 are columns of L-shaped structure. A short nail 30 and an adjustment assembly 40 are respectively arranged on a first support plate 11 and a second support plate 21 opposite to the first support body 10 and the second support body 20. When the short nails 30 on the first support plate 11 and the short nails 30 on the second support plate 21 are used, they cross through the pores of the corrugated cardboard. When the short nails 30 on the first support plate 11 and the short nails 30 on the second support plate 21 move away from each other, the paper surface of the corrugated cardboard and the corrugated base paper are separated. The bonding strength of the corrugated cardboard is calculated by detecting the force required to drive the short nails 30 to separate the two.

[0023] like Figure 3, the adjustment component 40 includes a scissor frame 41. The adjustment component 40 is used to adjust the arrangement spacing of the short nails on the same support plate, so as to cooperate with the detection of corrugated cardboard with different corrugation spacings. The short nails 30 are connected to the central hinge of the scissor frame 41. The device also includes a driving component 50 for driving the scissor frame 41 to extend or shorten. When the scissor frame 41 extends or shortens, the short nails 30 can move along the extension or shortening direction of the scissor frame 41. It is worth noting that during the movement of the short nails 30, the spacing between any adjacent short nails 30 is the same.

[0024] Specifically, the first cover body 12 and the second cover body 13 are provided on the first support plate 11 at a position corresponding to the scissors frame 41. The first cover body 12 and the second cover body 13 sleeve the scissors frame 41 inside. A through groove 14 is reserved between the first cover body 12 and the second cover body 13 at a position corresponding to the short nail 30. A slide groove 15 is provided on the first support plate 11 at a position corresponding to the short nail 30. One end of the short nail 30 is slidably connected to the slide groove 15, and the other end passes through the through groove 14. The short nail 30 is arranged at the central hinge of the scissors frame 41. Of course, the short nail 30 can serve as the central hinge axis of the scissors frame 41. When the scissors frame 41 is deformed, the short nail 30 can slide along the through groove 14 and the slide groove 15.

[0025] The driving assembly 50 is used to drive the scissor frame 41 to deform. There are many related methods, and the screw rod 51 and the hydraulic rod are taken as examples here.

[0026] Example 1

[0027] The driving assembly 50 includes a screw rod 51 which is transmission-connected to the scissors frame 41, and the connection method is similar to that of a jack. The two connection points of the scissors frame 41 corresponding to the screw rod 51 are provided with opposite internal threads. When the screw rod 51 rotates, the scissors frame 41 is located closer to or farther away from the two points connected to the screw rod 51, thereby driving the entire scissors frame 41 to extend or shorten. The screw rod 51 can be arranged at both ends of the scissors frame 41, or in the middle of the scissors frame 41. The driving assembly 50 also includes a bolt. One end of the screw rod 51 away from the third support plate 16 passes through the first cover body 12 and is connected to the bolt 53. A through hole 17 is provided on the first cover body 12 corresponding to the bolt 53. When the scissors frame 41 needs to be adjusted, it is only necessary to rotate the bolt 53 to drive the screw rod 51 to rotate, and the adjustment method is simple and quick.

[0028] Example 2

[0029] The driving assembly 50 includes a hydraulic rod that is transmission-connected to the scissor frame 41. Referring to the existing scissor lift truck, when the hydraulic rod is extended or shortened, the scissor frame 41 can be driven to extend or shorten.

[0030] Positioning rods 23 are provided on the third support plate 16 and the fourth support plate 22 of the first support body 10 and the second support body 20 that face each other. Connecting holes 24 are provided at the positions corresponding to the positioning rods 23 on the first support plate 11 and the second support plate 21. When the steel nails on the first support body 10 and the second support body 20 penetrate the corrugated cardboard, the positioning rods 23 can cooperate with the connecting holes 24. Thus, during the process of the third support plate 16 and the fourth support plate 22 moving in the approaching direction to separate the corrugated cardboard, the positioning rods 23 can be inserted into the connecting holes to limit the relative displacement direction of the first support body 10 and the second support body 20. The device for driving the movement of the third support plate 16 and the fourth support plate 22 and detecting the driving force can refer to the prior art, and only the fixing device part is provided in this application.

[0031] The usage method of the present utility model is as follows:

[0032] After adjusting the arrangement pitch of the short nails 30 through the driving assembly 50, the short nails 30 on the first support body 10 and the second support body 20 are respectively inserted into the pores of the corrugated cardboard. At this time, the positioning rods 23 cooperate with the through holes 17. When the third support plate 16 and the fourth support plate 22 move in the approaching direction, the positioning rods 23 can be inserted into the connecting holes 24 to limit the movement direction of the first support body 10 and the second support body 20.

[0033] The above embodiments are only used to illustrate the technical solutions of the present utility model and not to limit it. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present utility model, and they should all be covered within the scope of the claims of the present utility model. The technologies, shapes, and structures not described in detail in the present utility model are all well-known technologies.

Claims

1. A fixing frame for testing the bonding strength of cardboard, characterized in that: The invention comprises a first support body (10), a second support body (20) and a driving assembly (50) which are centrally symmetrically arranged, wherein a short nail (30) and an adjustment assembly (40) are respectively arranged on a first support plate (11) and a second support plate (21) which are opposite to the first support body (10) and the second support body (20), wherein the adjustment assembly (40) comprises a scissors frame (41), wherein the short nail (30) is connected to a central hinge of the scissors frame (41), and the driving assembly (50) is used for driving the scissors frame (41) to extend or shorten, and when the scissors frame (41) is extended or shortened, the short nail (30) can move along the extension or shortening direction of the scissors frame (41).

2. The fixing frame for testing the cardboard bonding strength according to claim 1, characterized in that: A first cover body (12) and a second cover body (13) are arranged on the first support plate (11) at a position corresponding to the installation of the scissors frame (41); a penetration groove (14) is reserved between the first cover body (12) and the second cover body (13) at a position corresponding to the short nail (30); a sliding groove (15) is arranged on the first support plate (11) at a position corresponding to the short nail (30); one end of the short nail (30) is slidably connected to the sliding groove (15), and the other end penetrates from the penetration groove (14).

3. The fixing frame for testing the bonding strength of cardboard according to claim 2, characterized in that: The driving assembly (50) comprises a screw rod (51) drivingly connected to the scissor frame (41), and the scissor frame (41) is provided with opposite internal threads at two connection points corresponding to the screw rod (51).

4. The fixing frame for testing the bonding strength of cardboard according to claim 2, characterized in that: The driving assembly (50) comprises a hydraulic rod drivingly connected to the scissor frame (41).

5. The fixing frame for testing the bonding strength of cardboard according to claim 3, characterized in that: Positioning rods (23) are provided on the third supporting plate (16) and the fourth supporting plate (22) which are arranged opposite to the first supporting body (10) and the second supporting body (20), and connecting holes (24) are provided on the first supporting plate (11) and the second supporting plate (21) at locations corresponding to the positioning rods (23).

6. The fixing frame for testing the cardboard bonding strength according to claim 3, characterized in that: The driving assembly (50) further comprises a bolt (53); one end of the screw rod (51) away from the third support plate (16) passes through the first cover body (12) and is connected to the bolt (53); a corresponding through hole (17) is provided on the first cover body (12) at a position corresponding to the bolt (53).

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