Headbox capable of adjusting paper banner quantification

Abstract

The utility model discloses a headbox capable of adjusting paper banner quantification, which comprises a headbox main body and an adjusting mechanism used for adjusting paper banner quantification, the headbox capable of adjusting paper banner quantification can drive a worm to move by rotating an adjusting piece, the worm drives a worm gear to move, and the worm gear drives a lead screw shaft to move. Under the driving of the worm and the worm gear, the lead screw shaft can move relative to the axial direction of the base body, the lead screw shaft drives the connecting rod to move at the same time, and the connecting rod drives the upper lip plate to move through the connecting base, so that the distance between the upper lip plate and the lower lip plate is increased or decreased, the paper banner is quantitatively adjusted, and the adjusting precision is improved; and the convenience of adjustment is also improved. In addition, the moving distance of the lead screw shaft can be measured through the dial indicator without being measured through shutdown, adjustment is carried out under the condition that shutdown is not needed, loss caused by shutdown is reduced, and the qualified rate of finished products is increased.

Description

Technical Field

[0001] The utility model relates to the field of papermaking equipment, in particular to a headbox capable of adjusting the quantitative cross section of paper. Background Art

[0002] The headbox is a key device of the paper machine and plays a key role in producing high-quality paper sheets. One of the basic tasks of the headbox is to ensure that the fiber suspension is evenly distributed along the transverse direction of the paper machine to minimize the transverse quantitative difference of the paper sheet; another basic task of the headbox is to ensure that the fibers in the fiber suspension are evenly dispersed in the water body, minimize the flocculation in the fiber suspension, and maximize the uniformity of the paper.

[0003] In order to manufacture paper that meets the process requirements, the size of the headbox lip and the spraying speed need to be conveniently controlled and adjusted during the paper production process. In order to keep the size of the headbox lip and the spraying speed stable, the existing adjustment method generally uses handwheel adjustment, which is prone to accuracy problems, affecting subsequent processes, and there are instability problems during use, which is inconvenient for users and reduces the practicality of the headbox. In addition, during use, if the quantitative cross section is unstable, it is necessary to stop and adjust. There is no reference value when adjusting, which is easy to cause deviation. When the deviation is large, it is necessary to stop and adjust again, which has great uncertainty and takes a lot of time. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a headbox capable of adjusting the quantitative cross section of paper.

[0005] The technical solution adopted by the utility model to solve the technical problem is: constructing a headbox capable of adjusting the quantitative cross section of paper, which comprises a headbox main body and an adjusting mechanism for adjusting the quantitative cross section of paper;

[0006] The headbox body comprises a headbox body, an upper lip plate arranged on the headbox body, and a connecting seat arranged on the upper lip plate;

[0007] The adjusting mechanism comprises a base, a screw shaft arranged on the base, a worm wheel drivingly connected to the screw shaft, a worm drivingly connected to the worm wheel, an adjusting member connected to the worm wheel and used to drive the worm to move, and a connecting rod; the two ends of the connecting rod are respectively connected to the screw shaft and the connecting seat, and the connecting rod is coaxially arranged with the screw shaft;

[0008] The adjustment mechanism also includes a cushion block and a dial indicator. The cushion block is arranged on one end of the screw shaft away from the connecting rod. The dial indicator is installed on the base, and the pointer of the dial indicator abuts against the cushion block.

[0009] In some embodiments, there are multiple adjustment mechanisms, the multiple adjustment mechanisms are commonly connected to the connecting seat, and the multiple adjustment mechanisms are equidistantly distributed.

[0010] In some embodiments, the adjustment mechanism further includes a cover body detachably connected to the base body, and the cover body is used to protect the dial indicator.

[0011] In some embodiments, the adjustment mechanism further comprises a shell detachably connected to the base, wherein the shell is connected to an end of the base away from the cover.

[0012] In some embodiments, the adjustment mechanism further includes a bearing and a first sleeve mounted in the base, and the bearing and the first sleeve are both sleeved on the circumferential end surface of the screw shaft.

[0013] In some embodiments, the connecting rod and the upper lip plate are arranged obliquely.

[0014] In some embodiments, an inclination angle between the connecting rod and the upper lip plate is 40 degrees to 60 degrees.

[0015] In some embodiments, the connecting seat is fixed to the upper lip plate by fasteners.

[0016] In some embodiments, a second sleeve is sleeved on the circumferential end surface of the connecting rod.

[0017] The implementation of the utility model has the following beneficial effects: the flow box with adjustable paper cross section quantity can drive the worm to move by rotating the adjusting member, the worm drives the worm wheel to move, the worm wheel drives the screw shaft to move, under the drive of the worm and the worm wheel, the screw shaft can move relative to the axial direction of the base, the screw shaft drives the connecting rod to move at the same time, the connecting rod drives the upper lip plate to move through the connecting seat, so that the distance between the upper lip plate and the lower lip plate increases or decreases, thereby adjusting the paper cross section quantity, improving the adjustment accuracy, and increasing the convenience of adjustment. In addition, the moving distance of the screw shaft can be measured by a dial indicator, without having to stop the machine to measure, and can be adjusted without stopping the machine, reducing the loss caused by stopping the machine, and increasing the qualified rate of finished products. The operator can also adjust the distance between the upper lip plate and the lower lip plate by observing the reading of the dial indicator. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the utility model, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show certain embodiments of the utility model, and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work. In the drawings:

[0019] Figure 1 It is a schematic diagram of the overall structure of a headbox capable of adjusting the paper cross-section basis weight in some embodiments of the utility model;

[0020] Figure 2 It is a schematic diagram of the structure of the adjustment mechanism in some embodiments of the utility model;

[0021] Figure 3 It is a cross-sectional view of the structure of the adjustment mechanism in some embodiments of the utility model in the front view direction;

[0022] Figure 4 It is a cross-sectional view of the structure of the adjustment mechanism in some embodiments of the utility model when viewed from above. DETAILED DESCRIPTION

[0023] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, are constructed and operated in a specific direction, and are only for the convenience of describing the present technical solution, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0024] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intermediate elements. The terms "first", "second", "third", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third", etc. can explicitly or implicitly include one or more of the features. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0025] See also Figures 1 to 4, is a headbox capable of adjusting the quantitative cross section of paper of the utility model, which comprises a headbox body 1 and an adjusting mechanism 2 for adjusting the quantitative cross section of paper. The headbox body 1 comprises a headbox body 11, an upper lip plate 12 arranged on the headbox body 11, and a connecting seat 13 arranged on the upper lip plate 12, and the adjusting mechanism 2 comprises a base 21, a screw shaft 22 arranged on the base 21, a worm gear 23 connected to the screw shaft 22, a worm 24 connected to the worm gear 23, an adjusting member 25 connected to the worm gear 23 and used to drive the worm 24 to move, and a connecting rod 26, the two ends of the connecting rod 26 are respectively connected to the screw shaft 22 and the connecting seat 13, and the connecting rod 26 is coaxially arranged with the screw shaft 22. The connecting rod 26 and the screw shaft 22 can be positioned and connected by a pin, and the connecting seat 13 is fixed to the upper lip plate 12 by a fastener such as a bolt.

[0026] It can be understood that the headbox adjusts the paper cross-section quantitative by adjusting the distance between the upper lip plate 12 and the lower lip plate. The lower lip plate is fixed relative to the headbox body 11, while the upper lip plate 12 is movable relative to the headbox body 11. In this embodiment, the position of the upper lip plate 12 is controlled by the above-mentioned adjustment mechanism 2, so as to adjust the distance between the upper lip plate 12 and the lower lip plate to achieve the function of adjusting the paper cross-section quantitative. In actual operation, the worm 24 can be driven to move by rotating the adjustment member 25, the worm 24 drives the worm gear 23 to move, and the worm gear 23 drives the screw shaft 22 to move. Under the drive of the worm 24 and the worm gear 23, the screw shaft 22 can move relative to the axial direction of the base 21, and the screw shaft 22 simultaneously drives the connecting rod 26 to move, and the connecting rod 26 drives the upper lip plate 12 to move through the connecting seat 13, so that the distance between the upper lip plate 12 and the lower lip plate increases or decreases, thereby adjusting the paper cross-section quantitative.

[0027] like Figure 3 As shown, the adjustment mechanism 2 also includes a cushion block 27 and a dial indicator 28. The cushion block 27 is arranged on the end of the screw rod away from the connecting rod 26; the dial indicator 28 is installed on the base 21, and the pointer of the dial indicator 28 abuts against the cushion block 27. When the screw shaft 22 moves along the axial direction of the base 21, the pointer of the dial indicator 28 contacts the cushion block 27. The moving distance of the screw shaft 22 can be measured by the dial indicator 28 without stopping the machine. Adjustment can be made without stopping the machine, reducing the loss caused by stopping the machine and increasing the qualified rate of finished products. The operator can also adjust the distance between the upper lip plate 12 and the lower lip plate by observing the reading of the dial indicator 28.

[0028] Furthermore, the number of the adjustment mechanism 2 is multiple, and the multiple adjustment mechanisms 2 are connected to the connection seat 13, and the multiple adjustment mechanisms 2 are evenly spaced. It can be understood that the multiple adjustment mechanisms 2 can adjust the paper cross-section quantitatively together, and each adjustment mechanism 2 can be adjusted independently to find the corresponding adjustment point and make fine adjustments to make the cross-section quantitative of the finished paper uniform and meet the standard.

[0029] The adjustment mechanism 2 further includes a cover 291 detachably connected to the base 21, and the cover 291 is used to protect the dial indicator 28. The adjustment mechanism 2 further includes a housing 292 detachably connected to the base 21, and the housing 292 is connected to one end of the base 21 away from the cover 291, and the housing 292 is used to protect the connection between the screw shaft 22 and the connecting rod 26. The connection between the screw shaft 22 and the connecting rod 26 or the maintenance and replacement of the screw shaft 22 and the connecting rod 26 can be performed by disassembling the housing 292.

[0030] Furthermore, the adjustment mechanism 2 further includes a bearing 293 and a first sleeve 294 installed in the base 21, and the bearing 293 and the first sleeve 294 are sleeved on the circumferential end surface of the screw shaft 22, and the bearing 293 and the first sleeve 294 are used to position the screw shaft. A second sleeve 261 is sleeved on the circumferential end surface of the connecting rod 26, and the second sleeve 261 is used to position the connecting rod 26.

[0031] like Figure 2 As shown, the connecting rod 26 and the upper lip plate 12 are arranged at an angle, so that the connecting rod 26 can drive the upper lip plate 12 to move under the push of the screw shaft 22. The inclination angle between the connecting rod 26 and the upper lip plate 12 is 40 to 60 degrees, and the inclination angle between the connecting rod 26 and the upper lip plate 12 is α shown in the figure. The inclination angle between the connecting rod 26 and the upper lip plate 12 is preferably 48 degrees.

[0032] It can be understood that the above embodiments only express the preferred implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the utility model. It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the utility model, the above-mentioned technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the utility model. Therefore, all equivalent changes and modifications made to the scope of the claims of the utility model should fall within the scope of the claims of the utility model.

Claims

1. A headbox capable of adjusting the paper profile weight, characterized in that: It comprises a headbox body (1) and an adjustment mechanism (2) for adjusting the quantitative cross section of paper; The headbox body (1) comprises a headbox body (11), an upper lip plate (12) arranged on the headbox body (11), and a connecting seat (13) arranged on the upper lip plate (12); The adjusting mechanism (2) comprises a base (21), a screw shaft (22) arranged on the base (21), a worm wheel (23) drivingly connected to the screw shaft (22), a worm (24) drivingly connected to the worm wheel (23), an adjusting member (25) connected to the worm wheel (23) and used for driving the worm (24) to move, and a connecting rod (26); two ends of the connecting rod (26) are respectively connected to the screw shaft (22) and the connecting seat (13), and the connecting rod (26) is coaxially arranged with the screw shaft (22); The adjustment mechanism (2) further comprises a cushion block (27) and a dial indicator (28); the cushion block (27) is arranged on one end of the screw shaft (22) away from the connecting rod (26); the dial indicator (28) is mounted on the base (21), and the pointer of the dial indicator (28) abuts against the cushion block (27).

2. The headbox with adjustable paper profile basis weight according to claim 1, characterized in that: The number of the adjustment mechanisms (2) is multiple, the multiple adjustment mechanisms (2) are commonly connected to the connecting seat (13), and the multiple adjustment mechanisms (2) are distributed at equal intervals.

3. The headbox with adjustable paper profile basis weight according to claim 1, characterized in that: The adjustment mechanism (2) further comprises a cover body (291) detachably connected to the base body (21), wherein the cover body (291) is used to protect the dial indicator (28).

4. The headbox with adjustable paper profile basis weight according to claim 3, characterized in that: The adjustment mechanism (2) further comprises a shell (292) detachably connected to the base (21), wherein the shell (292) is connected to an end of the base (21) away from the cover (291).

5. The headbox with adjustable paper profile basis weight according to claim 1, characterized in that: The adjustment mechanism (2) further comprises a bearing (293) and a first shaft sleeve (294) installed in the base (21); the bearing (293) and the first shaft sleeve (294) are both sleeved on the circumferential end surface of the screw shaft (22).

6. The headbox with adjustable paper profile basis weight according to claim 1, characterized in that: The connecting rod (26) and the upper lip plate (12) are arranged obliquely.

7. The headbox with adjustable paper profile basis weight according to claim 6, characterized in that: The inclination angle between the connecting rod (26) and the upper lip plate (12) is 40 degrees to 60 degrees.

8. The headbox with adjustable paper profile basis weight according to claim 1, characterized in that: The connecting seat (13) is fixed on the upper lip plate (12) via a fastener.

9. The headbox with adjustable paper profile basis weight according to claim 1, characterized in that: A second shaft sleeve (261) is sleeved on the peripheral end surface of the connecting rod (26).

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