CN217597980U - Cornerite device and paste shell machine - Google Patents

Abstract

The utility model relates to a cornerite device, this cornerite device are arranged in pasting shell machine and use and include: the mounting bracket is provided with a rotating block, and the rotating block can be driven to rotate around a rotating axis; an upper presser foot fixed to the rotating block, the upper presser foot including a presser foot guide surface and a presser foot bottom surface; and a first guide member and a second guide member disposed at both sides of the upper presser foot, the first guide member including a first guide surface, and the second guide member including a second guide surface; wherein the presser foot guide surface, the first guide surface and the second guide surface define a dog-ear pattern corresponding to a corner of the sheet material to be cornered. The folding angle pattern defined by the guide surfaces enables the foot part of the sheet material to be folded to be in a preset folding angle pattern, and then the foot part of the sheet material to be folded is folded and shaped by means of the rotation of the upper presser foot. The structure of the device is relatively simple and efficient compared with the common wrap-round corner structure. In addition, the utility model discloses still relate to a paste shell machine.

Description

Cornerite device and paste shell machine

Technical Field

The utility model belongs to printing back end mechanical equipment relates to a cornerite device to more specifically, relate to a cornerite device that is used for the cardboard that becomes the angle with the cardboard at fillet that will cut and the adhesive hem of the angled front cover that cuts become the angle paste shell plate. In addition, the utility model discloses still relate to a paste shell machine including this kind of cornerite device.

Background

In the current printing field, the round corner wrapping process is generally completed by adopting a mode of cutting a paper board with a round corner and cutting a cover adhesive folding edge with finger-shaped patterns. For example, fig. 1 illustrates a conventional round-cornered process in the prior art. In the round corner wrapping process, the cover is usually required to be cut into a corresponding finger shape according to the size of the radius R of the round corner, the cover is generally in a shape with two or three fingers, and different round corners have different cutting knife specifications. Then, after the upper and lower press legs of the round-cornered device are formed, the finger portions are stacked and staggered together in the round-cornered direction and are bonded.

However, the round-cornered process has high requirements on the positioning accuracy and cutting accuracy of the cover and the paperboard: on one hand, the types of cutting knives are more, particularly, when fingers of covers are cut, the number of the covers cut at one time is not more than 10, otherwise, the cutting is continuous, the edges of the fingers are not smooth, and the knives are damaged; on the other hand, the adjustment requirement on the package fillet device is higher, and besides the fine adjustment of the matching positions of the upper and lower press feet, the small deviation of the relative transmission positions of the paper board and the cover can also reduce the package fillet quality; meanwhile, the operation speed of the machine is also a factor, if the speed is too high, the arrangement sequence of the fingers is easily disordered when the cover fingers enter the lower presser foot shaping process, the surface is not flat, and the rejection rate is improved; in addition, after the fillet is formed, the connecting point of the arc at the root of the finger is more or less protruded, so that the fillet is not smooth.

It can be seen that the round-cornered process drawbacks in the prior art include, but are not limited to: the method has the advantages of labor cost, high debugging requirement, low running speed, poor stability, poor attractiveness and the like.

Accordingly, there is a significant need to provide an improved wrap angle device that overcomes one or more of the shortcomings of the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model provides a cornerite device, this cornerite device can be used for the burnt shell plate of gluing hem banding angle (or angulation) (for example the burnt shell plate of taking 45 jiaos) with the cardboard of taking the fillet that will cut and the front cover of the angulation that cuts (for example the front cover of taking 45 jiaos). The plate can be widely applied to gift packaging and stationery packaging markets, and in addition, a round-corner running (or rounding) process can be added in the subsequent process, so that the simple round-corner wrapping function is realized.

According to an aspect of the present invention, there is provided a corner wrapping device that may be used in a shell pasting machine and may include:

the mounting bracket can be provided with a rotating block which can be driven to rotate around a rotating axis;

an upper presser foot fixed to the turning block, the upper presser foot may include a presser foot guide surface and a presser foot bottom surface; and

a first guide and a second guide disposed at both sides of the upper presser foot, the first guide may include a first guide surface, and the second guide may include a second guide surface;

wherein the presser foot guide surface, the first guide surface and the second guide surface may define a dog-ear pattern corresponding to a corner of the sheet material to be cornered, e.g. an angled dog-ear pattern instead of a rounded corner pattern.

In this way, the corner of the sheet material to be cornered can be folded into a preset corner folding pattern through the corner folding pattern defined by the presser foot guide surface, the first guide surface and the second guide surface, and then the foot of the sheet material to be cornered can be folded and shaped by means of the rotation of the upper presser foot. In addition, the corner wrapping device cancels a positioning structure of a lower presser foot die, so that the structure is relatively simple compared with the common round corner wrapping structure. Furthermore, the wrap angle device has simple requirements on the sheets to be wrapped, such as covers, and the like, 70-80 sheets can be cut at one time, and the cutting knife is a common straight knife, so that the cutting efficiency is greatly improved, and the use and maintenance cost of the knife is reduced.

According to the above aspect of the present invention, preferably, the first guide surface and the second guide surface are arranged perpendicular to each other, and the presser foot guide surface defines a 45-degree angle with the first guide surface and the second guide surface, respectively, so that the dog-ear pattern forms a 45-degree wrap angle.

Through the arrangement, the corner wrapping process can adopt the paper board with the round corner and the cover with the 45-degree chamfer to form the outer 45-degree bevel edge through the edge wrapping process of the 45-degree corner wrapping device, and the effect of forming the outer fillet (outer R) under the action of the corner rounding equipment at the later stage. In addition, after the fillet die is heated, shaped and compacted in the later stage, the arc degree and the smoothness of the fillet are greatly improved.

According to the above aspect of the present invention, preferably, the corner wrapping device further includes a mounting seat provided between the upper presser foot and the turning block, the mounting seat including a first mounting hole, the first mounting hole being formed as a waist-shaped groove hole extending in the first direction, the mounting seat being fixed to the turning block with the aid of a fastener passing through the first mounting hole.

By adjusting the position of the upper presser foot relative to the turning block in the first direction, it is possible to adjust, for example, the distance between the bottom surface of the presser foot and the upper surface of the sheet material to be cornered, thereby achieving a desired cornered effect, for example, flattening the cover more evenly to the corner of the sheet material to be cornered.

According to the above aspect of the present invention, preferably, the mounting seat may further include a second mounting hole formed as a waist-groove-shaped hole extending in a second direction different from the first direction, and the upper presser foot is fixed to the mounting seat with a fastener passing through the second mounting hole.

By adjusting the relative position of the upper presser foot with respect to the turning block in the second direction, it is possible to adjust, for example, the distance between the presser foot guide surface and the edge of the sheet material to be cornered, thereby facilitating the shaping of the corner of the sheet material to be cornered into a desired shape.

According to the above aspect of the present invention, preferably, the wrap angle device may further include a return spring, one end of the return spring may be connected to the mounting bracket, and the other end of the return spring may be connected to the turning block to bias the turning block toward the non-pivoted initial position. The return spring assists in the return of the upper presser foot in the case that the wrap angle device is not subjected to an external force. In this way, on the one hand, after the corner wrapping is finished, the sheet with the finished corner wrapping is conveyed to the next station quickly, and on the other hand, each time the sheet to be corner wrapped is placed at the preset position of the corner wrapping device, the corner wrapping device is ensured to be in the initial state, so that the pre-forming of the sheet to be corner wrapped is facilitated, and the working efficiency is improved.

According to the above aspect of the utility model, preferably, the cornerite device can also include the pressure spring, and the pressure spring can set up between turning block and installing support to for installing support biasing downward turning block.

The pressure spring is always offset downwards (downwards acts on) the rotating block, so that the upper pressure foot is always tightly attached to a sheet material to be wrapped, such as a paperboard, to complete wrapping at a preset angle.

According to another aspect of the present invention, a case pasting machine is proposed, which can be used to wrap the periphery of a first sheet around the periphery of a second sheet, wherein the size of the first sheet may be larger than the size of the second sheet, wherein the case pasting machine comprises a plurality of corner wrapping devices according to the above aspect, which may be provided at each corner of the first sheet, respectively, for wrapping the corner of the first sheet to the corner of the second sheet.

With this kind of case pasting machine, a board (second sheet) with rounded corners and a cover (second sheet) with a predetermined angle chamfer (e.g., 45 ° chamfer) can be formed into a predetermined angle chamfer (e.g., outer 45 ° chamfer) by the hemming process of the hemming device. If the crust breaker is also provided with the fillet running equipment, the fillet running equipment can form the effect of an external fillet in the later period. The process has great advantages in production efficiency, raw material cost, adjustment time cost, production stability and finished product aesthetics.

According to the above aspect of the present invention, preferably, the presser foot bottom surface may be disposed perpendicular to the rotation axis, and as the turning block rotates around the rotation axis, the presser foot bottom surface smoothes and compacts the corner of the first sheet material to the corner of the second sheet material.

Through the upper presser foot of the design guide, the design and the edge covering of the first sheet can be synchronously completed, the angle covering time of the angle covering mechanism is greatly shortened, and the production efficiency is greatly improved.

According to the above aspect of the present invention, preferably, the cornerite device may be provided in the hemming station, and the first guide is a hemming brush. By means of the arrangement, the number of parts required by the corner wrapping device can be reduced, the predetermined corner wrapping function can be achieved by means of existing stations and parts in an existing shell pasting machine, and the existing equipment can be conveniently refitted.

According to the above aspect of the utility model, preferably, the turning block can include the kicking block, and the kicking block setting is at the turning block towards the lateral part of hem brush, and wherein, the hem brush is reciprocal linear motion formula hem brush to in the motion route of the inside removal of hem brush towards first sheet, the hem brush bulldozes the kicking block, makes the turning block rotatory around the rotation axis. Therefore, the rotation of the rotating block can be synchronously triggered by the edge folding process of the edge folding hairbrush, the angle wrapping operation of the sheet to be subjected to angle folding is realized, an additional power source is not needed, the structure of the device is further simplified, and the modification of the existing equipment is simplified.

According to the above aspect of the utility model, preferably, the turning block of every cornerite device can be by hem brush synchronous drive to accomplish the cornerite operation more high-efficiently, improved the treatment effeciency of pasting the shell machine.

According to the above aspect of the present invention, preferably, the mounting bracket can be mounted to a frame of the crust breaker, and the distance can be adjusted in two directions to accommodate the size of the first sheet and the second sheet. Through the arrangement, when the specification and the size of the sheet to be wrapped are switched, the wrapping angle device can be conveniently and quickly adjusted to meet the requirement of different products on cost, so that the production efficiency of the shell pasting machine is greatly improved.

According to the above aspect of the present invention, preferably, in order to reduce friction and improve response speed, a bearing may be further provided between the turning block and the mounting bracket.

From this, through the utility model discloses a cornerite device can satisfy the operation requirement, has overcome prior art's shortcoming and has realized predetermined purpose.

Drawings

To further clarify the description of the wrap angle device according to the present invention, a more particular description of the invention will be rendered by reference to the appended drawings, in which:

FIG. 1 is a schematic diagram of a conventional round-cornered process in the prior art;

fig. 2 is a schematic diagram of a corner wrapping process according to a non-limiting embodiment of the present invention, and illustrates an optional subsequent corner rounding process;

fig. 3 is a schematic view of a flanging station of a shell pasting machine according to the present invention, including a plurality of corner wrapping devices according to the present invention;

fig. 4 is a schematic perspective view of a wrap angle device according to a non-limiting embodiment of the present invention;

fig. 5 is another schematic perspective view of a wrap angle device in accordance with a non-limiting embodiment of the present invention;

fig. 6 shows a spacing between a presser foot bottom surface of the upper presser foot of the wrap angle device and the second sheet material according to a non-limiting embodiment of the present invention;

fig. 7 is an exemplary wrap and hem process using a wrap device according to a non-limiting embodiment of the present invention;

fig. 8 is a detail view of the upper presser foot of the wrap angle device according to a non-limiting embodiment of the present invention;

fig. 9 is another detail view of the upper presser foot of the wrap angle device according to a non-limiting embodiment of the present invention;

FIG. 10 illustrates an example of an asymmetric corner wrap pattern; and

fig. 11 is a further detailed view of the upper presser foot of the wrap angle device according to a non-limiting embodiment of the present invention.

The figures are purely diagrammatic and not drawn true to scale.

List of reference numbers in the figures and embodiments:

100-a wrap angle device comprising:

10-mounting a bracket;

11-a turning block comprising:

11A-a top block;

12-a central axis of rotation comprising:

12A-the axis of rotation;

13-a bearing;

20-upper presser foot, comprising:

21-presser foot guide surface;

22-presser foot bottom surface;

30-a first guide comprising:

31-a first guide surface;

40-a second guide comprising:

41-a second guide surface;

50-a mount comprising:

51-a first mounting hole;

52-second mounting hole;

60-a return spring;

70-pressure spring;

110-a first sheet comprising:

110A-cover corner fold;

120-a first sheet;

a-vertical spacing;

d-horizontal spacing;

f1-a second direction of movement;

f2-a second direction of movement;

f3-a third moving direction;

r1 — a first radius;

r2-a second radius;

r3-third radius.

Detailed Description

It is to be understood that the invention may assume various alternative orientations and step sequences, except where expressly specified to the contrary. It is also to be understood that the specific devices illustrated in the attached drawings, and described in the specification are simply exemplary embodiments of the inventive concepts disclosed and defined herein. Thus, specific orientations, directions, or other physical characteristics relating to the various embodiments disclosed should not be considered limiting unless expressly stated otherwise.

According to the present invention, the corner wrapping device 100 belongs to a post-printing mechanical device, the corner wrapping device 100 can be used in a shell pasting machine, the shell pasting machine can be used for wrapping the periphery of the first sheet 110 around the periphery of the second sheet 120, and the corner wrapping device 100 can particularly wrap the corner of the first sheet 110 to the corner of the second sheet 120. Obviously, the size of the first sheet 110 should be larger than the size of the second sheet 120 in order to achieve the desired wrapping.

By way of non-limiting example, the first sheet 110 may be a cut angled cover, such as preferably a 45 ° angled cover, and the second sheet 120 may be a cut, rounded paperboard that may be adhesively hemmed by the cornerite device 100 into an angled board, and preferably a 45 ° angled board.

A schematic diagram of the corner wrapping process according to a non-limiting embodiment of the present invention is shown in fig. 2, and this kind of plate with paste can be widely applied to gift packaging, stationery packaging, and the like markets.

As further shown in fig. 2, the crust breaker may include an optional subsequent corner-breaching device, thereby utilizing a post-pass addition corner-breaching process to achieve the simple corner-wrapping function.

Fig. 3 is a schematic view of a flanging station of a shell pasting machine according to the present invention, wherein a plurality of corner wrapping devices 100 according to the present invention may be included.

As shown, the hemming station may be provided with four corner wrapping devices 100 to simultaneously wrap four corners of the second sheet 120.

The corner wrapping device 100 according to the present invention is described in further detail below with reference to the drawings, and the corner wrapping device 100 may be any one of the four corner wrapping devices 100 shown in fig. 3.

Fig. 4 and 5 are each a schematic perspective view of a wrap angle device 100 according to a non-limiting embodiment of the present invention.

According to a non-limiting example of the present invention and as shown in fig. 4 and 5, the wrap angle device 100 may include: mounting bracket 10, turning block 11, upper presser foot 20, first guide 30 and second guide 40.

The mounting bracket 10 can be mounted to the frame of the shell press and can be fixed to a flanging support strip, for example, in a flanging station. In the example shown in the drawings, the left and right hem brackets are installed so as to firmly support the components of the corner device 100. In addition, as shown in more detail in fig. 3, the mounting brackets 10 may adjust their mounting position on the hem brace, thereby adjusting the relative distance between the two mounting brackets 10 to accommodate variations in the size of the first and second sheets.

The turning block 11 may be mounted on the mounting bracket 10 such that the turning block 10 can be driven to rotate about the rotation axis 12A.

In the embodiment shown in fig. 4 and 5, the turning block 10 is fit-fitted to the turning center shaft 12 so as to surround the rotation axis 12A, and preferably, a bearing 13 may be further provided between the turning block 10 and the turning center shaft 12 to reduce the turning friction, the bearing 13 may be, for example, a ball bearing or the like.

As shown, upper presser foot 20 may be fixed to turning block 11 to rotate along with turning block 11, and upper presser foot 20 may include a substantially vertically guided presser foot guide surface 21 and a substantially horizontally guided presser foot bottom surface 22. For example, the presser foot guide surface 21 may be disposed substantially parallel to the rotation axis 12A, and the presser foot bottom surface 22 may be guided parallel to the upper surface of the second sheet material 120. The presser foot guide surface 21 is used to cooperate with the remaining components (e.g., the first guide 30 and the second guide 40) to guide the corners and edges of the first sheet 110 to be formed into a predetermined shape. While the presser foot underside 22 is used to smooth out and compact the corners of the preformed first sheet material 110 onto the corners of the second sheet material 120.

Of course, the presser guide surface 21 and the presser foot bottom surface 22 shown in the drawings are schematic and those skilled in the art will be able to adjust their orientation as necessary to achieve the desired wrap angle function.

Referring back to fig. 3, the first guide 30 and the second guide 40 may be disposed at both sides of the upper presser foot 20, the first guide 30 may include a first guide surface 31, and the second guide 40 may include a second guide surface 41.

In the embodiment shown in fig. 3, the first guide 30 is a creasing brush, e.g. a left and right creasing brush, and the first guide 30 may have a first guide surface 31 facing the respective edge of the second sheet 120, e.g. the inwardly facing side surface of the creasing brush. The second guide 40 may be a side stop as shown in the figures, which may also be provided on the mounting bracket 10 and have a second guide surface 41 facing the corresponding edge of the second sheet 120.

In the embodiment shown in fig. 3, the first guide surface 31 and the second guide surface 41 are arranged perpendicular to each other, i.e. form a right angle to each other around the corner of the second sheet material 120, and the presser foot guide surface 21 defines a predetermined acute angle, for example preferably a 45 degree angle, with the first guide surface 31 and the second guide surface 41, respectively, so that the dog-ear pattern can form a 45 degree wrap angle.

When the bonded first sheet 110 with the second sheet 120 enters the left and right hemming stations, the first sheet 110 (e.g., cover paper, and cover paper may be used instead of the first sheet to more easily understand the concept of the present invention) outside the second sheet 120 (e.g., cardboard, and herein the cardboard may be used instead of the second sheet) is erected with the two sets of left and right hemming brushes, four sets of side stops, and four sets of upper press feet positioned, the first sheet 110 at each corner is folded into a dovetail groove shape, and the corner structure of the folded dovetail groove shape at one corner is schematically illustrated in fig. 8.

It can be seen that with such a cornerite arrangement 100, the presser foot guide surface 21, the first guide surface 31 and the second guide surface 41 define a dog-ear pattern corresponding to the corner of the sheet material to be cornered (the second sheet material 120), such as the dovetail-type dog-ear pattern shown in fig. 8, or other types of angled dog-ear patterns, rather than a fillet pattern.

With continued reference to fig. 4 and 5, the turning block 11 may further comprise a top block 11A, and the top block 11A may be disposed on a side of the turning block 11 facing the hemming brush. As a preferred embodiment, the hemming brush is a reciprocating linear motion type hemming brush, and in a motion path in which the hemming brush moves toward the inside of the first sheet 110, the hemming brush pushes the top block 11A so that the rotating block 11 rotates about the rotation axis 12A.

It can be seen that the top block 11A is a power trigger point, when the hemming brush starts hemming operation and moves linearly, the rotating block 11 swings by a certain angle around the central rotating shaft 12 along with the movement of the hemming brush, the upper presser foot 20 mounted on the rotating block 11 correspondingly rotates by a certain angle, and the cover at the round angle forms an angled wrap angle on the paperboard, for example, a wrap angle of 45 degrees, rather than a direct round angle.

As shown more clearly in fig. 3, one creasing brush pushes both turning blocks 11 on one side simultaneously, and furthermore, since in a case pasting machine the left and right creasing brushes are normally moving in synchronism, the turning blocks 11 of the four cornerite devices 100 in fig. 3 are driven in synchronism by the left and right creasing brushes.

In this way, in the corner wrapping device 100, after the predetermined corner folding pattern of the first sheet 110 is defined by the presser foot guide surface 21, the first guide surface 31 and the second guide surface 41, the upper presser foot 20 smoothes and compacts the corner folding pattern to the corner of the second sheet 120 under the pushing of the hemming brush, and the first sheet 110 is usually provided with an adhesive, so that a desired corner wrapping pattern is formed at the corner and the formed pattern can be maintained.

According to a non-limiting example of the present invention and as shown in the figures, the wrap angle device 100 may further comprise a return spring 60, one end of which may be connected to the mounting bracket 10 and the other end of which may be connected to the turning block 11 to bias the turning block 11 towards an initial non-pivoted position, for example to return the turning block 11 to the initial position after completion of a dog-ear operation. The return spring may be a tension spring, a coil spring, or the like known in the art as long as it can achieve a predetermined return function.

In addition, the corner wrapping device 100 may further include a compression spring 70, and the compression spring 70 may be disposed between the rotating block 11 and the mounting bracket 10 and downwardly biases the rotating block 11 relative to the mounting bracket 10, so that the upper presser foot 20 always abuts against the second sheet 120 (e.g., cardboard) to complete 45 ° edge wrapping of the first sheet 110 (e.g., cover).

Fig. 7 is an exemplary wrap and hem process using the wrap device 100 according to a non-limiting embodiment of the present invention. It can be seen that the example shown in fig. 7 is a wrap angle device 100 that achieves a wrap angle of approximately 45 °, but it is to be understood and as noted above that this angle is non-limiting and those skilled in the art can envision wrap angles of the remaining angles.

According to a non-limiting example of the present invention and as shown in fig. 7, this cornerite device 100 may be provided in the hemming station of the case pasting machine, and generally four cornerite devices 100 may be provided, so as to simultaneously achieve the cornerite of four corners of a sheet material, such as a case of a book. However, it should be understood that the manner and number of corner wrapping devices 100 are largely dependent on the shape of the sheets to be wrapped (e.g., the first sheet 110 and the second sheet 120 illustrated herein) to achieve the desired corner wrapping pattern.

As shown at 301 in fig. 7, a first sheet 110 of bonded, e.g., cover, is brought with a second sheet 120 of, e.g., paperboard into a hemming station, e.g., left and right hemming stations.

At 302, the edge and the corresponding corner of the first sheet 110 that falls outside the second sheet 120 are erected, and the cover paper at each corner is creased into a dovetail-shaped cover corner fold 110A, as specifically shown in fig. 8, under the positioning of the presser foot guide surface 21 of the upper presser foot 20, the first guide surface 31 of the first guide 30, and the second guide surface 41 of the second guide 40.

At 303, the left and right hem brushes are moved inwardly in a first moving direction F1 shown by an arrow, thereby urging the four sets of corner wrapping devices 100 to move. For example, the hemming brush may push the rotary block 11 to rotate via the top block 11A, and the upper presser foot 20 rotates in the second moving direction F2 in a round direction following the rotary block 12, thereby smoothing and compacting the corner of the first sheet 110 to the corner of the second sheet 120.

In order to smoothly wrap the wrinkles into a preferred 45 ° bevel, the relative positions of the upper presser foot 20 and the second sheet material 120, such as cardboard, in the vertical direction and the horizontal direction need to be adjusted (such an adjustment structure will be described in detail below).

Then, as the left and right hemming brushes return to the initial position, the turning block 12 returns to the initial position also under the action of the return spring 60, allowing the second sheet 120, which is wrapped with the first sheet 110 at least at two sides and at four corners, to be removed from the station for transfer, for example by means of respective conveying means, into the next station.

At 304, the front and rear crimping brushes are moved inwardly in a third direction of movement F3 indicated by the arrows, wrapping the remaining two side edges of the first sheet 110 to the respective side portions of the second sheet 120, thereby completing the wrapping of the first sheet 110 over the entire periphery of the second sheet 120.

Fig. 8 and 9 are detailed views of upper presser foot 20 of wrap angle device 100 according to a non-limiting embodiment of the present invention.

As shown, there are three turning radii at the front end and bottom of upper presser foot 20 relative to axis of rotation 12A: a first radius R1, a second radius R2 and a third radius R3, wherein the first radius R1 is the smallest radius of the presser foot bottom (presser foot bottom surface), the second radius R2 is the largest radius of the front end of the presser foot and the third radius R3 is the largest radius of the presser foot bottom (presser foot bottom surface).

By way of non-limiting example, the relative position of upper pressure foot 20 on rotation block 11 or mount 50 may be adjusted. A suitable position for upper presser foot 20 is where R1 and R2 are equally close to the tangent point of the rounded and straight edges and cover the entire rounded area, with too much or too little on one side resulting in a non-45 ° bevel and asymmetric wrap angle effect on both sides, as schematically illustrated in fig. 10.

As a preferred embodiment, the distance D between the wrap and fillet facets is adjusted to 1-1.5mm, as schematically shown in fig. 11.

In the embodiment of the 45 ° wrap angle by the wrap angle device 100, as the left and right hemming brushes move inward to rotate against the four sets of wrap angle devices 100 in the direction of the fillet, the relative position of the upper presser foot 20 and the second sheet 120 needs to be adjusted in order to wrap the wrinkles smoothly into the 45 ° oblique edge. A non-limiting configuration of such an adjustment operation will be described in detail below.

With continued reference to fig. 4 and 5, as a preferred embodiment, the wrap angle device 100 may further include a mounting seat 50 disposed between the upper presser foot 20 and the rotating block 11, the mounting seat 50 including a first mounting hole 51, the first mounting hole 51 being shaped as a kidney-slot-shaped hole extending in a first direction (e.g., in a vertical direction). The mount 50 is fixed to the rotating block 11 by a fastener passing through the first mounting hole 51. The upper presser foot 20 is vertically adjustable with respect to the turning block 11 via the first mounting hole 51, thereby controlling a vertical gap a between the presser foot bottom surface 22 and the upper surface of the second sheet material 120.

Preferably, in order to make the corner wrap compact, the specific fixing position of the first mounting hole 51 can be adjusted, so that a gap of 0.3-0.5mm exists between the bottom surface 22 (or corner wrap surface) of the presser foot at the bottom of the presser foot and the upper surface of the second sheet material 120 (such as a paperboard).

With continued reference to fig. 4 and 5, as a preferred embodiment, the mount 50 may further include a second mounting hole 52, the second mounting hole 52 being shaped as a kidney slot-shaped hole extending in a second direction (e.g., in a horizontal direction) different from the first direction. The upper foot clamp 20 may be secured to the mount 50 by a fastener passing through the second mounting hole 52.

Alternatively, the second mounting hole may be provided on the upper presser foot 20, such as a waist-slot-type or oblong mounting hole provided on the top thereof, such that the mounting seat 50 is secured to the upper presser foot 20 by a fastener passing through the mounting hole, which may be, for example, the structure as in fig. 8.

It should be understood that although the embodiments shown in the figures arrange the components to enable the wrap angle device 100 to wrap the first sheet material 110 with a 45 degree chamfer to the second sheet material 120 with a rounded corner, it is apparent that by adjusting the position and orientation of the upper presser foot 20, and in particular the position and orientation of the presser foot guide surface 21, one skilled in the art can also achieve wrap angles for the remaining angles, such as 20 degrees, 30 degrees, 40 degrees, 50 degrees, 60 degrees, etc.

The terms "left", "right", and the like for indicating the order of orientation or direction as used herein are only for the purpose of making the concepts of the present invention shown in the form of preferred embodiments better understood by those of ordinary skill in the art, and are not intended to limit the present invention.

Unless otherwise specified, all sequences, orientations, or orientations are used for the purpose of distinguishing one element/component/structure from another element/component/structure only, and do not imply any particular order, sequence of operations, direction, or orientation, unless otherwise specified. For example, in an alternative embodiment, a "first mounting hole" may be a "second mounting hole" and a "first guide" may alternatively refer to a "second guide.

In addition, as used herein, the term "sheet material" may refer to various sheet-like or plate-like products having a predetermined shape, including, but not limited to, various thicknesses of paperboard, various composite material plates such as plastic plates, and the like, and in particular, cardboard, case board, cover, and the like used in the printing industry in the embodiments illustrated herein.

According to the utility model discloses a cornerite device 100, especially combine the cornerite device that the preferred embodiment shows can realize 45 cornerite to have the not advantage of ordinary fillet device, if produce 45 bordures and can accomplish with cardboard and the front cover at the angle of falling 45, if the effect that the back needs to reach the fillet can be accomplished with fillet cardboard and the front cover at the angle of falling 45. The operation is simple, the cost is economical, and the device is a very practical additional device of the shell pasting machine.

In summary, the wrap angle device 100 according to the embodiment of the present invention overcomes the disadvantages of the prior art, and achieves the intended utility model object.

While the wrap angle device of the present invention has been described above in connection with the preferred embodiments, it will be understood by those of ordinary skill in the art that the above examples are intended to be illustrative only and should not be taken as limiting the invention. Therefore, various modifications and changes can be made to the present invention within the spirit and scope of the claims, and these modifications and changes will fall within the scope of the claims of the present invention.

Claims (10)

1. A cornerite device (100) for use in a shell pasting machine, characterized in that it comprises:

a mounting bracket (10) on which a turning block (11) is arranged, which can be driven in rotation about a rotation axis (12A);

an upper presser foot (20) fixed to the turning block (11), the upper presser foot (20) including a presser foot guide surface (21) and a presser foot bottom surface (22); and

a first guide member (30) and a second guide member (40) disposed at both sides of the upper presser foot (20), the first guide member (30) including a first guide surface (31), and the second guide member (40) including a second guide surface (41);

wherein the presser foot guide surface (21), the first guide surface (31) and the second guide surface (41) define a dog-ear pattern corresponding to a corner of a sheet to be cornered.

2. The wrap angle device (100) according to claim 1, characterized in that the first guide surface (31) and the second guide surface (41) are arranged perpendicular to each other and the presser foot guide surface (21) defines a 45 degree angle with the first guide surface (31) and the second guide surface (41), respectively, such that the bevel pattern forms a 45 degree wrap angle.

3. The corner wrapping device (100) according to claim 1, characterized in that the corner wrapping device (100) further comprises a mounting seat (50) disposed between the upper presser foot (20) and the turning block (11), the mounting seat (50) comprising a first mounting hole (51) shaped as a kidney slot-shaped hole extending in a first direction, the mounting seat (50) being fixed to the turning block (11) by means of a fastener passing through the first mounting hole (51).

4. The corner wrapping device (100) according to claim 3, wherein the mounting base (50) further comprises a second mounting hole (52) shaped as a kidney slot-shaped hole extending in a second direction different from the first direction, the upper foot (20) being fixed to the mounting base (50) by means of a fastener passing through the second mounting hole (52).

5. The wrap angle device (100) according to any one of claims 1-4, characterized in that the wrap angle device (100) further comprises a return spring (60) having one end connected to the mounting bracket (10) and the other end connected to the turning block (11) to bias the turning block (11) towards an un-pivoted initial position.

6. The corner wrapping device (100) according to any one of claims 1-4, characterized in that the corner wrapping device (100) further comprises a compression spring (70) arranged between the turning block (11) and the mounting bracket (10) and biasing the turning block (11) downwards relative to the mounting bracket (10).

7. A shell pasting machine for wrapping a peripheral edge of a first sheet (110) around a peripheral edge of a second sheet (120), wherein the first sheet (110) has a size larger than the second sheet (120),

characterized in that the casing pasting machine comprises a plurality of corner wrapping devices (100) according to any one of claims 1 to 6, the corner wrapping devices (100) being respectively provided at each corner of the first sheet (110) for wrapping the corner of the first sheet (110) to the corner of the second sheet (120).

8. The shell pasting machine according to claim 7, characterized in that the presser foot bottom surface (22) is arranged perpendicular to the rotation axis (12A) and as the turning block (11) rotates around the rotation axis (12A), the presser foot bottom surface (22) smoothes, compacts, the corners of the first sheet (110) to the corners of the second sheet (120).

9. The machine according to claim 7, characterized in that said cornerite device (100) is provided in a creasing station and said first guide (30) is a creasing brush.

10. The mash machine according to claim 9, characterized in that the turning block (11) comprises a top block (11A) arranged on the side of the turning block (11) facing the edger brush, wherein the edger brush is a reciprocating linear motion edger brush and in the path of movement of the edger brush towards the inside of the first sheet (110) the edger brush pushes against the top block (11A) so that the turning block (11) rotates around the rotation axis (12A).

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