Belt tensioning mechanism

Abstract

The utility model relates to the technical field of hygienic product equipment, in particular to a belt tensioning mechanism which comprises a fixing base, an adjusting base, a supporting column, a tensioning wheel, a transverse plate and an adjusting piece, the adjusting base is arranged on the left side of the fixing base, the supporting column is rotationally arranged in the adjusting base, the tensioning wheel is arranged on the outer side of the supporting column, and the transverse plate is arranged at the bottom of the fixing base. The adjusting part is arranged on a transverse plate at the bottom of the fixing seat, through the arrangement of the transverse plate and the adjusting part, the fixing seat and the adjusting seat are of a concave-convex groove embedded structure, and through tolerance fit, when the adjusting part is screwed down, the adjusting seat can move without loosening a fastener on the adjusting seat, and therefore the purpose of tensioning a belt is achieved. The problem that adjustment is very strenuous due to belt retracting acting force after bolts of a belt tensioning mechanism are detached is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sanitary product equipment, in particular to a belt tensioning mechanism. Background Art

[0002] In the production process of disposable sanitary products, belts are needed for material transportation, and the belts often need to be tensioned. Therefore, the belt tensioning mechanism is particularly important. Usually, when the belt needs to be tensioned and adjusted, the bolts of the belt tensioning mechanism need to be removed. However, the belt has a certain reaction force, and it is particularly laborious to adjust the belt tensioning mechanism under the influence of the belt force after removing the bolts. Content of the Utility Model

[0003] Therefore, in view of the above problems, the utility model provides a belt tensioning mechanism, which solves the technical problem that it is particularly laborious to adjust the belt tensioning mechanism under the influence of the belt force after removing the bolts.

[0004] To achieve the above object, the utility model adopts the following technical scheme: A belt tensioning mechanism, comprising a fixed seat, an adjustment seat, a support column, a tensioning wheel, a cross plate, and an adjusting member. The adjustment seat is arranged on the left side of the fixed seat. The support column is rotatably arranged in the adjustment seat. The tensioning wheel is arranged outside the support column. The cross plate is arranged at the bottom of the fixed seat. The adjusting member is arranged on the cross plate at the bottom of the fixed seat.

[0005] Further, a fastener is arranged between the adjustment seat and the fixed seat.

[0006] Further, the fastener includes a bolt body, a bolt head arranged at the top of the bolt body, an external thread arranged on the outer side of the bottom of the bolt body, a first nut screwed on the outer side of the external thread, and a second nut screwed on the outer side of the external thread. The inner side of the second nut is provided with placing grooves on both horizontal sides. One side of the top of the placing groove is provided with a first through hole communicating with the outer side of the second nut. One side of the bottom of the placing groove is provided with a second through hole communicating with the inner side of the second nut. A convex column is arranged in the middle of the placing groove. A gear is arranged on the outer side of the convex column. A first tooth column is slidably connected in the first through hole, and the first tooth column meshes with the gear. A second tooth column is slidably connected in the second through hole, and the second tooth column meshes with the gear. A first spring is arranged between the first tooth column and the placing groove. A card for fitting the outer thread at the bottom of the bolt body is arranged on the side of the second tooth column away from the gear. A sealing nut for covering the placing groove is arranged on the top surface of the second nut.

[0007] Further, the shape of the sealing nut is the same as that of the second nut.

[0008] Further, an anticorrosive paint is sprayed on the outer side of the sealing nut.

[0009] By adopting the foregoing technical solutions, the beneficial effects of the present utility model are as follows:

[0010] For this belt tensioning mechanism, through the arrangement of the cross plate and the adjusting member, the structure between the fixed seat and the adjusting seat is an interlocking structure of concave and convex grooves. Through tolerance fit, when the adjusting member is tightened, the fastener on the adjusting seat can move the adjusting seat without loosening, so as to achieve the purpose of tensioning the belt, and solve the problem that it is particularly laborious to adjust under the influence of the belt tension force after removing the bolt of the belt tensioning mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic structural diagram of the present utility model;

[0012] Figure 2 is a left schematic view of the structure of the present utility model;

[0013] Figure 3 is a top schematic view of the structure of the present utility model;

[0014] Figure 4 is a schematic structural diagram of the fastener of the present utility model;

[0015] Figure 5 is a schematic cross-sectional view of the structure of the second nut of the present utility model;

[0016] Figure 6 is an enlarged schematic view of the structure at A of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0018] Refer to Figures 1 to 6 , this embodiment provides a belt tensioning mechanism, including a fixed seat 1, an adjusting seat 2, a support column 3, a tensioning wheel 4, a cross plate 5, and an adjusting member 6. The adjusting seat 2 is arranged on the left side of the fixed seat 1. The support column 3 is rotatably arranged in the adjusting seat 2. The tensioning wheel 4 is arranged outside the support column 3. The cross plate 5 is arranged at the bottom of the fixed seat 1. The adjusting member 6 is arranged on the cross plate 5 at the bottom of the fixed seat 1.

[0019] The position of the adjusting seat 2 can be adjusted by bolts. As can be seen from the attached Figure 1 , the structure between the fixed seat 1 and the adjusting seat 2 is an interlocking structure of concave and convex grooves. Through tolerance fit, when the adjusting member 6 is tightened, the fastener on the adjusting seat 2 can move the adjusting seat 2 without loosening, so as to achieve the purpose of tensioning the belt, avoiding the adjustment being laborious due to the loosening of the fastener on the adjusting seat 2. The adjusting member 6 is preferably a bolt, and by screwing and cooperating with the cross plate 5, the adjusting seat 2 is moved.

[0020] A fastener 7 is provided between the adjustment seat 2 and the fixed seat 1. The fastener 7 includes a bolt body 71, a bolt head 72 provided at the top of the bolt body 71, an external thread 73 provided on the outer side of the bottom of the bolt body 71, a first nut 74 screwed on the outer side of the external thread 73, and a second nut 75 screwed on the outer side of the external thread 73.

[0021] On both lateral sides inside the second nut 75, there are placement grooves 76. On one side at the top of the placement groove 76, there is a first through hole 76a communicating with the outer side surface of the second nut 75. On one side at the bottom of the placement groove 76, there is a second through hole 76b communicating with the inner side surface of the second nut 75. In the middle of the placement groove 76, there is a protruding column 76c. On the outer side of the protruding column 76c, there is a gear 77. A first tooth column 78 is slidably connected in the first through hole 76a, and the first tooth column 78 meshes with the gear 77. A second tooth column 79 is slidably connected in the second through hole 76b, and the second tooth column 79 meshes with the gear 77. Between the first tooth column 78 and the placement groove 76, there is a first spring 711. On the side of the second tooth column 79 away from the gear 77, there is a card 710 for fitting against the external thread 73 at the bottom of the bolt body 71. On the top surface of the second nut 75, there is a sealing nut 712 for covering the placement groove 76.

[0022] Due to the increase in the speed of existing diaper production equipment, the vibration amplitude frequency generated by the high-speed rotation of the tensioning wheel increases, and the fasteners between the fixed seat and the adjustment seat are prone to loosening. Through the setting of the fastener, the outer side of the bolt body 71 passes through the fixed seat and the adjustment seat, then the first nut 74 is tightened on the outer side of the external thread 73, and then the second nut 75 is initially tightened on the outer side of the external thread 73. Then, the wrench is clamped at the position of the first tooth column 78 on the second nut 75. After the wrench is clamped, the first tooth column 78 will move towards the bolt body 71. The first tooth column 78 drives the second tooth column 79 to move away from the bolt body 71 through the gear 77. When the distance between the second nut 75 and the first nut 74 is 3 mm to 9 mm, then loosen the wrench and adjust the position of the wrench so that the wrench does not contact the part of the first tooth column 78 on the outer side of the second nut 75. After continuing to rotate the wrench a certain distance, the card 710 tightly adheres to and is clamped in the external thread 73 on the outer side of the bolt body 71. After a single card 710 is tightly fitted with the external thread 73 of the bolt body 71, the friction between the card 710 and the external thread 73 is increased. And due to the action of the first spring 711, the card 710 will always be clamped and fitted with the external thread 73 on the outer side of the bolt body 71, and it is less likely to loosen during long-term use. When it needs to be loosened, through the rebound of the first tooth column 78 and the second tooth column 79, the card 710 does not contact the external thread 73, reducing the wear of the card 710 and increasing the number of times the second nut 75 can be used. Compared with the existing single-piece movable card 710 whose effect deteriorates after single use, the second nut 75 has a longer service life.

[0023] The sealing nut 712 has the same shape as the second nut 75, which is beneficial for rotating the second nut 75 and the sealing nut 712 with the same wrench.

[0024] The outer side of the sealing nut 712 is sprayed with anti-corrosion paint, which is beneficial for improving the anti-corrosion performance of the sealing nut 712.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0026] In the present utility model, unless otherwise clearly defined and limited, the terms such as "installed", "connected", "connected to", "fixed" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. 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 specific circumstances.

[0027] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0028] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0029] Although the present utility model has been specifically shown and described in connection with preferred embodiments, those skilled in the art should understand that various changes may be made to the present utility model in terms of form and details without departing from the spirit and scope of the present utility model as defined by the appended claims, and all such changes are within the protection scope of the present utility model.

Claims

1. A belt tensioning mechanism, characterized in that, It includes a fixed seat (1), an adjustment seat (2), a support column (3), a tensioning wheel (4), a cross plate (5), and an adjusting member (6). The adjustment seat (2) is arranged on the left side of the fixed seat (1). The support column (3) is rotatably arranged in the adjustment seat (2). The tensioning wheel (4) is arranged outside the support column (3). The cross plate (5) is arranged at the bottom of the fixed seat (1). The adjusting member (6) is arranged on the cross plate (5) at the bottom of the fixed seat (1).

2. The belt tensioning mechanism according to claim 1, wherein: A fastener (7) is arranged between the adjustment seat (2) and the fixed seat (1).

3. A belt tensioning mechanism according to claim 2, characterized in that: The fastener (7) includes a bolt body (71), a bolt head (72) arranged at the top of the bolt body (71), an external thread (73) arranged on the outer side of the bottom of the bolt body (71), a first nut (74) screwed on the outer side of the external thread (73), and a second nut (75) screwed on the outer side of the external thread (73). On both lateral sides of the interior of the second nut (75), there are placed grooves (76). On one side of the top of the placed groove (76), there is a first through hole (76a) communicating with the outer side surface of the second nut (75). On one side of the bottom of the placed groove (76), there is a second through hole (76b) communicating with the inner side surface of the second nut (75). In the middle of the placed groove (76), there is a protruding column (76c). On the outer side of the protruding column (76c), there is a gear (77). A first tooth column (78) is slidably connected in the first through hole (76a), and the first tooth column (78) meshes with the gear (77). A second tooth column (79) is slidably connected in the second through hole (76b), and the second tooth column (79) meshes with the gear (77). A first spring (711) is arranged between the first tooth column (78) and the placed groove (76). On the side of the second tooth column (79) away from the gear (77), there is a card (710) for fitting with the external thread (73) at the bottom of the bolt body (71). On the top surface of the second nut (75), there is a sealing nut (712) for covering the placed groove (76).

4. A belt tensioning mechanism according to claim 3, characterized in that: The shape of the sealing nut (712) is the same as that of the second nut (75).

5. The belt tensioning mechanism according to claim 3, characterized in that: An anti-corrosion paint is sprayed on the outer side of the sealing nut (712).

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