Corrugated board indentation device

Abstract

The corrugated board indentation device comprises a pressure plate, a forming plate and a supporting plate which are longitudinally arranged from top to bottom, the upper end of the forming plate is detachably connected with a plurality of fixing rods, the upper end faces of the fixing rods are detachably connected with the pressure plate, meanwhile, the lower end of the pressure plate is provided with a plurality of limiting blocks, and the limiting blocks are detachably connected with the forming plate. At the moment, the projection of each limiting block on the horizontal layer is restrained to be of a right trapezoid structure, the maximum height of the upper bevel edge of each limiting block is smaller than the height of the lower end face of the corresponding forming plate, and the bevel edges at the lower ends of the limiting blocks can be used for pushing the corrugated boards to the proper positions; the purpose of automatically adjusting the corrugated boards is achieved, the requirement for operators is lowered, and therefore the machining cost is lowered.

Description

Technical Field

[0001] The utility model relates to the technical field of corrugated paperboard processing, in particular to a corrugated paperboard creasing device. Background Art

[0002] Corrugated paperboard is a common and widely used packaging product, which has penetrated into every aspect of our daily life. Because of its extremely wide range of applications, its usage has always been at the forefront of various packaging products.

[0003] Before the corrugated cardboard is made into a finished product, it needs to be cut, crimped, and processed to facilitate the subsequent bending and forming. The device for crimping the corrugated cardboard in the prior art lacks a corresponding limit mechanism, and in actual use, the operator often needs to manually position it to ensure that the corrugated cardboard can be placed in a specific position.

[0004] Therefore, we believe that there is a need for a corrugated cardboard creasing device that can assist in positioning the corrugated cardboard and facilitate creasing processing. Summary of the invention

[0005] In view of the deficiencies in the prior art, the utility model proposes a corrugated cardboard creasing device, which has the advantages of reducing the operating steps and facilitating the delivery of the corrugated cardboard to a predetermined position, and solves the shortcomings of the prior art device that the operator relies on manual positioning, the operation is cumbersome and the precision is low.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A corrugated cardboard creasing device comprises a pressure plate, a forming plate and a support plate which are arranged longitudinally from top to bottom, wherein a plurality of upper and lower axial positioning rods are circumferentially fixedly connected to the upper end surface of the support plate, a plurality of positioning holes are provided on the pressure plate for the positioning rods, and each positioning rod is inserted into the positioning hole at a corresponding position, a plurality of fixing rods are detachably connected to the upper end of the forming plate, and the upper end surface of the fixing rods is detachably connected to the pressure plate, a plurality of limit blocks are provided at the lower end of the pressure plate, each limit block is projected as a right-angled trapezoidal structure on the vertical plane, and the maximum height of the upper hypotenuse of each limit block is less than the height of the lower end surface of the forming plate, and the hypotenuse of each limit block is inclined downward toward the support plate, and a compression spring I is sleeved on the outer side of each positioning rod, and the lower end surface of the compression spring I is fixedly connected to the support plate.

[0008] Preferably, each of the limit blocks includes a fixed section and a driving section arranged upper and lower, wherein the driving section is projected as a triangular structure on the vertical plane, and the fixed section is projected as a rectangular structure on the vertical plane, and the distance between the fixed section on each limit block close to the forming plate and the forming plate is smaller than the distance between the driving section on the side close to the forming plate and the forming plate.

[0009] Preferably, a plurality of anti-slip strips are fixedly connected to the lower end of the portion of the fixed section protruding from the driving section on each of the limit blocks, and the anti-slip strips are made of rubber.

[0010] Preferably, the length of the fixed section of each of the limit blocks is not less than five centimeters, and the angle between the hypotenuse of the driving section of each of the limit blocks and the horizontal plane is not less than 60°.

[0011] Preferably, each of the limit blocks is fixedly connected to the upper end with an inner rod in an upper and lower axial direction, an outer tube is sleeved on the outer side of the inner rod, a matching rod is fixedly connected to the upper end face of the outer tube, and the outer tube is detachably connected to the pressure plate through the matching rod, and a compression spring II is sleeved on the outer side of each of the inner rods, and the upper and lower ends of each compression spring II are fixedly connected to the corresponding limit block and outer tube.

[0012] Preferably, each of the mating rods is detachably connected with a bolt I at one end near the pressure plate, a fixing hole I is opened on the pressure plate for the bolt I, the bolt I is inserted into the fixing hole I and the screw tail of the bolt I is screwed with a locking nut, the upper end of each of the fixing rods is screwed with a bolt II, a fixing hole II is opened on the pressure plate for the bolt II, the screw head of the bolt II is located above the pressure plate, the lower end of each of the fixing rods is detachably connected with a bolt III, an internal threaded hole is opened on the forming plate for the bolt III, and the screw tail of the bolt III is screwed with the internal threaded hole.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model utilizes a fixing rod and a matching rod to synchronously drive the limit block and the forming plate to fall during the falling process of the pressure plate. At this time, by constraining the structural characteristics of the limit block and the positional relationship between the limit block and the forming plate, the oblique edge of the lower end of the limit block can be used to push the corrugated cardboard to a suitable position, thereby achieving the purpose of automatically adjusting the corrugated cardboard, reducing the requirements for operators and thus reducing processing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the connection between the limit block and the matching rod of the utility model;

[0017] Figure 3 This is a schematic diagram of the connection between the fixing rod and the bolt III of the utility model;

[0018] Figure 4 This is a schematic diagram of the position relationship between the pressure plate and bolt Ⅰ of the utility model;

[0019] Figure 5 It is a schematic diagram of the position relationship between the forming plate and the internal threaded hole of the utility model.

[0020] In the figure: 1. support plate; 2. positioning rod; 3. compression spring I; 4. forming plate; 5. pressure plate; 6. bolt II; 7. bolt I; 8. matching rod; 9. limit block; 901. fixing section; 902. driving section; 903. anti-slip strip; 10. inner rod; 11. compression spring II; 12. outer tube; 13. locking nut; 14. fixing rod; 15. positioning hole; 16. bolt III; 17. fixing hole I; 18. internal threaded hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0023] Please refer to Figure 1-5 A corrugated cardboard creasing device comprises a pressure plate 5, a forming plate 4 and a supporting plate 1 arranged longitudinally from top to bottom, wherein a plurality of creasing strips (not shown in the figure) are fixedly connected to the lower end of the forming plate 4. As known to those skilled in the art, the longitudinal section of the creasing strips is a semi-elliptical structure. By embedding the creasing strips into the corrugated cardboard, the corrugated paper in the middle of the corrugated cardboard is forced to deform, thereby producing a creasing effect, which is convenient for the subsequent bending of the corrugated cardboard.

[0024] Therefore, the support plate 1 is located at the bottom, and its main function is to place the corrugated cardboard and provide vertical support to the corrugated cardboard, thereby ensuring that the indentation strip can be embedded in the corrugated cardboard during the falling process of the forming plate 4.

[0025] It should be noted that, in practice, the support plate 1 is generally replaced by a processing table top. In this application, for the sake of ease of expression, it is expressed as the support plate 1.

[0026] Therefore, the pressure plate 5 is located at the top, and a plurality of fixing rods 14 are arranged between the pressure plate 5 and the forming plate 4 , so that the pressure plate 5 can drive the forming plate 4 to move downward through the fixing rods 14 .

[0027] It should be noted that in practice, a corresponding position driving mechanism is generally provided at the upper end of the pressure plate 5 to drive the pressure plate 5 to move downward. In this application, for ease of reading, the corresponding driving mechanism is omitted for the pressure plate 5.

[0028] A plurality of vertical axial positioning rods 2 are fixedly connected to the upper end of the support plate 1 , and positioning holes 15 are opened on the pressure plate 5 for the positioning rods 2 . The positioning rods 2 are inserted into the positioning holes 15 to constrain the movement trajectory of the pressure plate 5 .

[0029] A compression spring Ⅰ3 is sleeved on the outer side of the positioning rod 2, the lower end surface of the compression spring Ⅰ3 is fixedly connected to the support rod, and the upper end surface of the compression spring Ⅰ3 abuts against the pressure plate 5, which makes the pressure plate 5 tend to move upward, thereby realizing the automatic resetting process of the pressure plate 5.

[0030] Specifically, in order to realize automatic position adjustment of the corrugated cardboard, the device is provided with a plurality of limit blocks 9 around the pressure plate 5. The limit blocks 9 are connected to the pressure plate 5 through corresponding matching rods 8, so that the pressure plate 5 falls and synchronously drives the limit blocks 9 and the forming plate 4 to move downward.

[0031] Specifically, the longitudinal section of each limit block 9 is a right-angled trapezoidal structure, and the hypotenuse of each limit block 9 is inclined downward toward the support plate 1. This ensures that when the limit block 9 moves downward, the hypotenuse of the limit block 9 first contacts the corrugated cardboard that is not in the predetermined position. This can use the hypotenuse of the limit block 9 to provide a horizontal driving force for the corrugated cardboard, thereby ensuring that the corrugated cardboard can move horizontally to the predetermined position.

[0032] Therefore, in order to ensure that the lower bevel of the limit block 9 contacts the forming plate 4 and the corrugated cardboard first, and to ensure that the lower bevel of the limit block 9 pushes the corrugated cardboard to a predetermined position before the indentation strip is embedded in the corrugated cardboard to form an indentation, the device constrains the maximum height of each bevel to be less than the height of the lower end surface of the forming plate 4.

[0033] Specifically, the limit block 9 includes two parts, the upper end of the limit block 9 is a fixed section 901, and the fixed section 901 is projected as a rectangular structure on the vertical plane. The lower end of the limit block 9 is a driving section 902, and the driving section 902 is projected as a triangular structure on the vertical plane.

[0034] The device constrains that the distance between the fixed section 901 on each limit block 9 and the forming plate 4 is smaller than the distance between the driving section 902 and the forming plate 4, which enables the fixed section 901 and the driving section 902 to form a stepped structure on the side close to the forming plate 4. As a result, when the device uses the beveled edge at the lower end of the limit block 9 to push the corrugated cardboard to a predetermined position, the portion of the fixed section 901 on the limit block 9 protruding from the driving block can press on the corrugated cardboard to further limit the corrugated cardboard, thereby avoiding lateral position displacement of the corrugated cardboard during the embedding of the indentation strip into the corrugated cardboard.

[0035] Furthermore, in order to further enhance the friction resistance between the fixed section 901 on the limit block 9 and the corrugated cardboard, the device has a rubber anti-slip strip 903 fixedly connected to the lower end of the fixed section 901 on the limit block 9 that protrudes from the driving section 902, and uses the anti-slip strip 903 to improve the friction coefficient.

[0036] Furthermore, since the corrugated cardboard has a multi-layer structure and the middle part of the corrugated cardboard is a wavy structure, in order to prevent the fixed section 901 of the limit block 9 from flattening the edge of the corrugated cardboard, the device constrains the length of a single limit block 9 to be no less than five centimeters, thereby utilizing a larger contact area to reduce pressure.

[0037] Furthermore, since the structural strength of the corrugated cardboard itself is limited, in order to prevent the beveled edge of the limit block 9 from causing the edge of the corrugated cardboard to twist during the process of pushing the corrugated cardboard, the device constrains the angle between the beveled edge of the driving section 902 on the limit block 9 and the horizontal plane to be no less than 60°, which can reduce the downward pressure exerted by the limit block 9 on the corrugated cardboard.

[0038] Furthermore, in order to ensure that the lower end surface of the fixing block on the limit block 9 can fit with the corrugated cardboard to generate sufficient friction, the device is fixedly connected to the upper end of each limit block 9 with an inner rod 10 in an upper and lower axial direction, and an outer tube 12 is sleeved on the outer side of the inner rod 10, and the outer tube 12 is fixedly connected to the matching rod 8. This utilizes the sliding connection between the inner rod 10 and the outer tube 12 to enable the limit block 9 to make an up and down linear motion relative to the matching rod 8, that is, relative to the pressure plate 5.

[0039] At this time, the compression spring sleeved on the outside of the inner rod 10 makes the limit block 9 tend to move downward relative to the pressure plate 5, which can ensure that the fixed section 901 of the limit block 9 can fit the upper end surface of the corrugated cardboard.

[0040] Furthermore, in order to adapt to different processing processes, the device constrains the mating rod 8 and the pressure plate 5 to be detachably connected, and the forming plate 4 and the pressure plate 5 to be detachably connected. This makes it possible to flexibly select a suitable mating rod 8 according to different sizes of corrugated cardboard in practice, and to flexibly select a suitable forming plate 4 according to different indentation positions.

[0041] Specifically, one end of the mating rod 8 close to the pressure plate 5 is detachably connected with a bolt Ⅰ7, and a fixing hole Ⅰ17 is opened on the pressure plate 5 for the bolt Ⅰ7 to penetrate through. The bolt Ⅰ7 is inserted into the fixing hole Ⅰ17 and the thread tail part of the bolt Ⅰ7 is threaded with a locking nut 13. In this way, the detachable connection between the mating rod 8 and the pressure plate 5 can be achieved by cooperating with the bolt Ⅰ7 and the locking nut 13.

[0042] Specifically, the device has a bolt III 16 detachably connected to the lower end of each fixing rod 14, and an internal threaded hole 18 is opened on the forming plate 4 for the bolt III 16, so that the bolt III 16 cooperates with the internal threaded hole 18 to achieve a detachable connection between the fixing rod 14 and the forming plate 4.

[0043] Furthermore, the device also has a detachable connection mechanism between the fixing rod 14 and the pressure plate 5, which allows the device to flexibly select a fixing rod 14 of appropriate height according to the indentation depth in practice, ensuring that the indentation strip and the limit block 9 are at appropriate heights.

[0044] Specifically, a plurality of fixing holes II are provided on the pressure plate 5, and bolts II 6 are inserted into the fixing holes II. The bolts II 6 pass through the fixing holes II and are screwed to the fixing rods 14 in the same vertical plane. At this time, the screw heads of the constraining bolts II 6 are located above the pressure plate 5, so that a detachable connection between the pressure plate 5 and the fixing rod 14 can be achieved.

[0045] In actual use, the utility model:

[0046] First, the operator selects the appropriate number and size of pressure plates 5, matching rods 8, and fixing rods 14 according to the corrugated paperboard to be processed;

[0047] After that, the overall assembly is completed, ensuring that the bolt I7 is inserted into the fixing hole I17, the bolt II6 is screwed to the fixing rod 14, and the bolt III16 is screwed to the forming plate 4;

[0048] Then, the device starts to work normally. During the falling process of the pressure plate 5, the limit block 9 and the forming plate 4 are driven to fall synchronously. At this time, the bevel at the lower end of the limit block 9 first contacts the corrugated cardboard, and the limit block 9 pushes the corrugated cardboard to move horizontally to a suitable position;

[0049] Finally, the pressure plate 5 continues to fall, at which time the indentation strip is embedded in the corrugated cardboard, the compression spring II11 is in a compressed state, and the lower end surface of the fixed section 901 of the limit block 9 is tightly fitted with the corrugated cardboard.

[0050] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A corrugated cardboard creasing device, characterized in that: The invention comprises a pressure plate (5), a forming plate (4) and a support plate (1) which are arranged longitudinally from top to bottom, wherein a plurality of upper and lower axial positioning rods (2) are fixedly connected to the upper end surface of the support plate (1) in a circumferential direction, a plurality of positioning holes (15) are opened on the pressure plate (5) for the positioning rods (2), and each positioning rod (2) is inserted into a positioning hole (15) at a corresponding position; The upper end of the forming plate (4) is detachably connected to a plurality of fixing rods (14), and the upper end surfaces of the fixing rods (14) are detachably connected to the pressure plate (5); A plurality of limit blocks (9) are arranged at the lower end of the pressure plate (5), each limit block (9) is projected into a right-angled trapezoidal structure on a vertical plane, and the maximum height of the upper bevel of each limit block (9) is less than the height of the lower end surface of the forming plate (4), and the bevel of each limit block (9) is inclined downward toward the support plate (1); A compression spring I (3) is sleeved on the outside of each positioning rod (2), and the lower end surface of the compression spring I (3) is fixedly connected to the support plate (1).

2. A corrugated board creasing device according to claim 1, characterized in that: Each of the limit blocks (9) comprises a fixed section (901) and a driving section (902) arranged vertically, wherein the driving section (902) is projected into a triangular structure on a vertical plane, and the fixed section (901) is projected into a rectangular structure on a vertical plane; The distance between the fixed section (901) on each of the limit blocks (9) and the molding plate (4) is smaller than the distance between the driving section (902) and the molding plate (4) on the side close to the molding plate (4).

3. A corrugated board creasing device according to claim 2, characterized in that: The lower end of the fixed section (901) on each of the limit blocks (9) that protrudes from the driving section (902) is fixedly connected to a plurality of anti-slip strips (903), and the anti-slip strips (903) are made of rubber.

4. The corrugated board creasing device according to claim 2, characterized in that: The length of the fixed section (901) of each of the limit blocks (9) is not less than five centimeters, and the angle between the hypotenuse of the driving section (902) of each of the limit blocks (9) and the horizontal plane is not less than 60 degrees.

5. The corrugated board creasing device according to claim 1, characterized in that: The upper end of each of the limit blocks (9) is fixedly connected to an inner rod (10) in an upper and lower axial direction, an outer tube (12) is sleeved on the outer side of the inner rod (10), a matching rod (8) is fixedly connected to the upper end surface of the outer tube (12), and the outer tube (12) is detachably connected to the pressure plate (5) via the matching rod (8); A compression spring II (11) is sleeved on the outside of each inner rod (10), and the upper and lower ends of each compression spring II (11) are fixedly connected to the corresponding limit block (9) and the outer tube (12).

6. A corrugated board creasing device according to claim 5, characterized in that: Each of the matching rods (8) is detachably connected to a bolt I (7) at one end close to the pressure plate (5); a fixing hole I (17) is provided on the pressure plate (5) for the bolt I (7); the bolt I (7) is inserted into the fixing hole I (17) and a locking nut (13) is screwed to the threaded end of the bolt I (7); The upper end of each fixing rod (14) is screwed with a bolt II (6), and the pressure plate (5) is provided with a fixing hole II for the bolt II (6), and the screw head of the bolt II (6) is located above the pressure plate (5); The lower end of each fixing rod (14) is detachably connected to a bolt III (16); an internal threaded hole (18) is provided on the forming plate (4) for the bolt III (16); and the thread tail of the bolt III (16) is threadedly connected to the internal threaded hole (18).

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