Anti-collision structure of pinch roller proximity switch

Abstract

The utility model discloses a pinch roller proximity switch anti-collision structure which comprises a limiting column, the limiting column is arranged at a pinch roller mounting seat in a penetrating mode through a detachable structure and located at the rebound path of a pinch roller mounting rod, the end face of the limiting column faces the pinch roller mounting rod, and when a pinch roller rebounds, the end face of the limiting column abuts against the pinch roller mounting rod. The spring-back end point along with the pinch roller mounting rod is limited; the diameter of the limiting column ranges from 10 mm to 14 mm. The limiting column is arranged at the top of the pressing wheel mounting base and located above the pressing wheel mounting rod, the space is wide, replacement is convenient, maintenance is convenient and fast, and the limiting column directly limits the pressing wheel mounting rod at the position so that the pressing wheel mounting rod can not be broken easily; the springback end point of the pressing wheel mounting rod is limited through the end face of the limiting column, the collision direction of the pressing wheel mounting rod is not the radial direction of the limiting column, and the possibility that the limiting column is broken by collision is reduced; the diameter of the limiting column is increased, and durability is improved. The utility model has the advantages that the durability and the maintenance convenience are increased.

Description

TECHNICAL FIELD

[0001] The application relates to a pressure roller approach switch anti-collision structure in the field of a pressure roller device for baling in paper production. BACKGROUND

[0002] In the process of baling and discharging in paper production, a pressure roller device is needed, a pressure roller of the pressure roller device is hinged to a fixed shaft of a pressure roller mounting seat through a pressure roller mounting rod, a sensing block is arranged at the tail of the pressure roller mounting rod, a proximity switch is arranged at the relative position of the sensing block, the sensing block is away from the proximity switch when the pressure roller is pressed, the sensing block is connected with a reset spring to drive the pressure roller and the pressure roller mounting rod to reset, the sensing block is reset to be close to the proximity switch, and a limiting screw is further arranged at the relative position of the sensing block to limit the end position of the reset of the sensing block at the tail of the pressure roller mounting rod, and the specific structure is shown in Figure 1 .

[0003] In actual use, when a paper stack arrives at the pressure roller, the pressure roller is pressed to drive the sensing block at the tail to move away from the proximity switch, the sensing block is separated from the proximity switch, the signal is disconnected, the paper stack conveyor stops working, and a paper signal is transmitted to the front conveying belt, when the front conveying belt is empty, the front and rear are automatically started at the same time, the pulp paper stack is sent away, the pressure roller and the sensing block are instantaneously popped up and reset under the elastic force of the reset spring, and the sensing block is abutted against the limiting screw until the arrival of the next paper stack, so that the automatic conveying work is completed in a cycle.

[0004] The limiting screw is used to avoid the impact of the sensing block on the proximity switch, and the purpose of anti-collision is achieved, but the axial direction of the limiting screw is orthogonal to the direction of the impact force of the sensing block, that is, the side surface of the limiting screw is in contact with the sensing block, and therefore, the limiting screw is often broken by the sensing block, after the limiting screw is broken, the sensing block directly impacts the proximity switch, the proximity switch is damaged by the impact, the service life of the proximity switch is affected, the maintenance cost is increased, in addition, the limiting screw is arranged between the proximity switch and the reset spring, the position is narrow, replacement is difficult, time-consuming is long, the conveying efficiency is affected, and the conveying line is blocked. CONTENT OF THE UTILITY MODEL

[0005] Therefore, it is necessary to provide a pressure roller approach switch anti-collision structure to solve the problems that the pressure roller approach switch anti-collision structure is easily damaged and difficult to maintain in the prior art.

[0006] To achieve the above-mentioned purpose, the inventor provides a pressure roller approach switch anti-collision structure, which comprises:

[0007] A limiting column is arranged at the pressure roller mounting seat through a detachable structure, and the limiting column is located at the rebound path of the pressure roller mounting rod, the end face of the limiting column faces the pressure roller mounting rod, and when the pressure roller rebounds, the end face of the limiting column abuts against the pressure roller mounting rod to limit the rebound end point of the pressure roller mounting rod.

[0008] In some embodiments, the detachable structure comprises a threaded hole provided at the pressing wheel mounting seat and a thread provided at the side surface of the limiting column, the limiting column is screwed at the inner side of the pressing wheel mounting seat through the threaded hole.

[0009] In some embodiments, further comprising: an auxiliary nut, the auxiliary nut is screwed at the limiting column and located at the outer side of the pressing wheel mounting seat and is screwed to abut against the pressing wheel mounting seat.

[0010] In some embodiments, the auxiliary nut is a butterfly nut.

[0011] In some embodiments, the detachable structure comprises a mounting portion provided at the side surface of the limiting column and a fixing screw, the limiting column is penetrated at the pressing wheel mounting seat and the mounting portion is fixed at the pressing wheel mounting seat through the bolt.

[0012] In some embodiments, the diameter of the limiting column is 10mm-14mm.

[0013] In some embodiments, the end surface of the limiting column towards the pressing wheel mounting rod is provided with a buffer pad.

[0014] In some embodiments, the buffer pad is a silica gel sleeve or a plastic sleeve.

[0015] In some embodiments, the end surface of the limiting column towards the pressing wheel mounting rod is curved.

[0016] In some embodiments, the end surface of the limiting column towards the pressing wheel mounting rod is an inclined surface, when the pressing wheel mounting rod is rebounded, the inclined surface is matched with the side surface of the pressing wheel mounting rod.

[0017] Compared with the prior art, the pressing wheel proximity switch anti-collision structure has the following advantages: the limiting column is penetrated at the pressing wheel mounting seat and located at the rebound path of the pressing wheel mounting rod, i.e. the limiting column is located at the top of the pressing wheel mounting seat and above the pressing wheel mounting rod, there is no other component around this position, the space is spacious, the replacement is convenient, the maintenance is convenient, and compared with the position of the limiting screw in the prior art, the limiting column directly limits the pressing wheel mounting rod at the top of the pressing wheel mounting seat and is less likely to be broken; the end surface of the limiting column is towards the pressing wheel mounting rod, when the pressing wheel is rebounded, the end surface of the limiting column abuts against the pressing wheel mounting rod to limit the rebound end point of the pressing wheel mounting rod, i.e. the rebound end point of the pressing wheel mounting rod is limited by the end surface of the limiting column, the direction of the impact of the pressing wheel mounting rod is not the radial direction of the limiting column, but close to the axial direction of the limiting column, or even the axial direction of the limiting column, so that the possibility of the limiting column being broken can be reduced to a greater extent; in addition, the diameter of the limiting column is increased to 10mm-14mm, which also increases the durability.

[0018] The above content related to the description of the utility model is only a summary of the technical solutions of the present application. In order to enable those skilled in the art to more clearly understand the technical solutions of the present application, and then can be implemented according to the content recorded in the description and drawings, and in order to enable the above-mentioned purposes and other purposes, characteristics and advantages of the present application to be more easily understood, the following is described in combination with the specific embodiments of the present application and the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings are only used to show the principles, implementation manners, applications, characteristics and effects of the specific embodiments and other related contents of the present application, and cannot be considered as limitations of the present application.

[0020] In the drawings of the specification:

[0021] Figure 1 The structure diagram of the pressure roller device described in the background art;

[0022] Figure 2 The use diagram of the pressure roller device described in the background art;

[0023] Figure 3 The structure diagram of the pressure roller proximity switch anti-collision structure applied to the pressure roller device in the specific embodiment;

[0024] Figure 4 The use diagram of the pressure roller proximity switch anti-collision structure applied to the pressure roller device in the specific embodiment;

[0025] Figure 5 The partial sectional view of the pressure roller proximity switch anti-collision structure applied to the pressure roller device in the specific embodiment;

[0026] Figure 6 The sectional view of the pressure roller proximity switch anti-collision structure applied to the pressure roller device in the specific embodiment;

[0027] The reference signs involved in the above drawings are explained as follows:

[0028] 1, pressure roller;

[0029] 2, pressure roller mounting rod;

[0030] 3, pressure roller mounting seat;

[0031] 30, threaded hole;

[0032] 4, fixed shaft;

[0033] 5, proximity switch;

[0034] 6, sensing block;

[0035] 7, limiting screw;

[0036] 8, reset spring;

[0037] 9, limit post;

[0038] 90, thread;

[0039] 91, cushion;

[0040] 10, auxiliary nut. DETAILED DESCRIPTION

[0041] To explain possible application scenarios, technical principles, specific schemes that can be implemented, purposes and effects that can be achieved, etc. of the present application in detail, the following will be described in detail in combination with specific embodiments listed and with the aid of the accompanying drawings. The embodiments described in this paper are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0042] In this paper, the term "embodiment" means that the specific features, structures or characteristics described in combination with the embodiment can be included in at least one embodiment of the present application. The term "embodiment" appearing at various places in the specification does not necessarily refer to the same embodiment, and does not particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, each technical feature mentioned in each embodiment can be combined in any way to form a corresponding implementable technical solution.

[0043] Unless otherwise defined, the meaning of the technical terms used in this paper is the same as that generally understood by those skilled in the art to which the present application belongs; the use of related terms in this paper is only for the purpose of describing specific embodiments, and is not intended to limit the present application.

[0044] In the description of the present application, the phrase "and / or" is a description of the logical relationship between the objects, which means that there can be three relationships, for example, A and / or B, which means that there are three cases: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this paper generally represents that the associated objects before and after are a kind of "or" logical relationship.

[0045] In the present application, such as "first" and "second", the terms are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, primary and secondary or order relationship between the entities or operations.

[0046] In the present application, the terms "comprise", "contain", "include", or other similar phrases used in the statements mean to encompass the non-exclusive inclusion, and the terms do not exclude the presence of additional elements in the process, method or product comprising the stated elements, so that the process, method or product comprising a series of elements can not only include those defined elements, but also include other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0047] In the present application, the terms "greater than", "less than", "exceed" and the like are understood as not including the number itself, and the terms "above", "below", "within" and the like are understood as including the number itself. In addition, in the description of the embodiments of the present application, the meaning of "multiple" is more than two (including two), and similar expressions related to "multiple" are also understood in this way, for example, "multiple groups", "multiple times" and the like, unless otherwise explicitly specified.

[0048] In the description of the embodiments of the present application, the spatial-related terms used, such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "perpendicular", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or the drawings, and are only for the convenience of describing the specific embodiments of the present application or for the reader to understand, and do not indicate or imply that the indicated device or component must have a particular position, a particular orientation, or be constructed or operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0049] Unless otherwise explicitly specified or limited, in the description of the embodiments of the present application, the terms "mount", "connect", "connect", "fix", "set", and the like should be understood in a broad sense. For example, the "connection" can be a fixed connection, or a detachable connection, or an integral setting; it can be a mechanical connection, or an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art to which the present application belongs, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0050] In the papermaking production packing offline conveying process, a pressure roller device is needed, the pressure roller 1 of the pressure roller device is hinged to the fixed shaft 4 of the pressure roller mounting seat 3 through a pressure roller mounting rod 2, the tail of the pressure roller mounting rod 2 is provided with a sensing block 6, the relative position of the sensing block 6 is provided with a proximity switch 5, when the pressure roller 1 is pressed down, the pressure roller mounting rod 2 drives the sensing block 6 to move away from the proximity switch 5, the sensing block 6 is connected with a reset spring 8 to drive the pressure roller 1 and the pressure roller mounting rod 2 to reset, the sensing block 6 is reset to be close to the proximity switch 5, and the relative position of the sensing block 6 is also provided with a limiting screw 7 to limit the end position of the reset of the sensing block 6 at the tail of the pressure roller mounting rod 2, and the specific structure is shown in Figure 1

[0051] Please refer to Figure 2 In actual use, when the paper stack presses down the pressure roller 1, the tail sensing block 6 is moved away from the proximity switch 5, the sensing block 6 and the proximity switch 5 are separated, the signal is disconnected, the paper stack conveyor stops working, and a paper signal is transmitted to the front conveying belt, when the front conveying belt is empty, the front and rear are automatically started at the same time, the pulp paper stack is sent away, the pressure roller 1 and the sensing block 6 are instantaneously popped up and reset under the elastic force of the reset spring 8, until the sensing block 6 abuts against the limiting screw 7, to wait for the arrival of the next paper stack, so that the automatic conveying work is completed.

[0052] The limiting screw 7 is used to avoid the sensing block 6 from colliding with the proximity switch 5, and the purpose of collision prevention is achieved, but the axial direction of the limiting screw 7 is orthogonal to the direction of the impact force of the sensing block 6, that is, the side surface of the limiting screw 7 is in contact with the sensing block 6, and thus the limiting screw 7 is often broken by the sensing block 6, and after the screw is broken, the sensing block 6 directly collides with the proximity switch 5, which causes the proximity switch 5 to be damaged by the impact, affects the service life of the proximity switch 5, increases the maintenance cost, in addition, the limiting screw 7 is arranged between the proximity switch 5 and the reset spring 8, and the position is narrow, so that the limiting screw 7 is difficult to replace, the time is long, the conveying efficiency is affected, and the conveying line is blocked.

[0053] Therefore, the utility model provides a pressure roller proximity switch 5 anti -collision structure for limiting the end position of the reset of the sensing block 6 at the tail of the pressure roller mounting rod 2, to avoid the sensing block 6 from colliding with the proximity switch 5, and the purpose of collision prevention is achieved, especially the position, the impact surface and the specification are changed, the durability is increased, the possibility of breakage is reduced, the installation is easier, and the maintenance is more convenient.

[0054] Please refer to Figures 3 to 6 ​In specific embodiments, the pressure roller proximity switch anti-collision structure comprises a limiting column 9, which is arranged at the pressure roller mounting seat 3 (the pressure roller mounting seat 3 comprises two vertical plates perpendicular to the axial direction of the fixing shaft 4, a horizontal plate parallel to the axial direction of the fixing shaft 4, and the two ends of the fixing shaft 4 are connected to the two vertical plates respectively, and the limiting column 9 is arranged at the horizontal plate) through a detachable structure, and the limiting column 9 is located at the rebound path of the pressure roller mounting rod 2, the end face of the limiting column 9 faces the pressure roller mounting rod 2, and when the pressure roller 1 rebounds, the end face of the limiting column 9 abuts against the pressure roller mounting rod 2 to limit the rebound end point of the pressure roller mounting rod 2; the diameter of the limiting column 9 is 10-14 mm.

[0055] The limiting column 9 of the pressure roller proximity switch anti-collision structure is arranged at the pressure roller mounting seat 3, and the limiting column 9 is located at the rebound path of the pressure roller mounting rod 2, that is, the limiting column 9 is arranged at the top of the pressure roller mounting seat 3 (that is, at the horizontal plate), and the position of the limiting column 9 is above the pressure roller mounting rod 2, and there are no other components around this position, and the space is wide. Compared with the position of the limiting screw 7 (the limiting screw 7 is surrounded by the return spring 8, the proximity switch 5 and the sensing block 6) in the prior art, the replacement of the limiting column 9 is more convenient, and the maintenance is more convenient. Compared with the limiting screw 7 in the prior art which directly limits the sensing block 6, the limiting column 9 arranged at the top of the pressure roller mounting seat 3 directly limits the pressure roller mounting rod 2 and is less likely to be broken. The end face of the limiting column 9 faces the pressure roller mounting rod 2, and when the pressure roller 1 rebounds, the end face of the limiting column 9 abuts against the pressure roller mounting rod 2 to limit the rebound end point of the pressure roller mounting rod 2. That is, the end face of the limiting column 9 limits the rebound end point of the pressure roller mounting rod 2. The direction of the impact of the pressure roller mounting rod 2 is not the radial direction of the limiting column 9, but is close to the axial direction of the limiting column 9, or even is the axial direction of the limiting column 9. In this way, the possibility of breaking the limiting column 9 can be reduced to a greater extent. In addition, increasing the diameter of the limiting column 9 to 10-14 mm also increases the durability.

[0056] Therefore, the mechanical limiting originally designed in the narrow space at the bottom is changed to the top of the pressure roller seat through redesign, the position of the mechanical limiting is redesigned, the size specification is increased, the impact position of the mechanical limiting is changed, the durability and the convenience of maintenance are increased, the problem of breaking and damaging the proximity switch 5 and affecting the conveying rate no longer occurs, and the disassembly and replacement are more convenient. The application is applied to the pressure roller device for actual use test for two months, and no breaking and damaging of the proximity switch 5 occurs, and the operation efficiency is improved by more than 30%.

[0057] The way of installing the limiting column 9 at the pressure roller mounting seat 3 can be various, please refer to Figure 5In some embodiments, the detachable structure comprises a threaded hole 30 formed on the pressure roller mounting seat 3 (specifically, on the horizontal plate of the pressure roller mounting seat 3) and a thread 90 formed on the side surface of the limiting column 9, the limiting column 9 is screwed to the inner side of the pressure roller mounting seat 3 through the threaded hole 30, that is, the limiting column 9 is mounted on the pressure roller mounting seat 3 through threaded connection.

[0058] The threaded hole 30 can be perpendicular to the horizontal plate of the pressure roller mounting seat 3, when the limiting column 9 is mounted on the horizontal plate, it is in a state perpendicular to the pressure roller mounting seat 3, and the direction of the impact of the pressure roller mounting rod 2 is close to the axial direction of the limiting column 9; the threaded hole 30 can also be inclined to the horizontal plate of the pressure roller mounting seat 3, when the limiting column 9 is mounted on the horizontal plate, it is in a state inclined to the pressure roller mounting seat 3, when the pressure roller rebounds, the axial direction of the limiting column 9 is perpendicular to the pressure roller mounting rod 2, and the direction of the impact of the pressure roller mounting rod 2 is the axial direction of the limiting column 9.

[0059] In some embodiments, an auxiliary nut 10 is further included, the auxiliary nut 10 is screwed on the limiting column 9 and located on the outer side of the pressure roller mounting seat 3 and is screwed to abut against the pressure roller mounting seat 3. By screwing the auxiliary nut 10, the thread of the limiting column 9 and the thread in the threaded hole 30 can be more tightly engaged with each other, so as to avoid loosening of the limiting column 9 and affect the accuracy of the limiting.

[0060] In some embodiments, the auxiliary nut 10 is a butterfly nut, which can be more convenient for users to tighten by hand without tools.

[0061] The mounting manner of the limiting column 9 on the pressure roller mounting seat 3 can also be another way, in some embodiments, the detachable structure comprises a mounting portion formed on the side surface of the limiting column 9 and a fixing screw, the limiting column 9 is inserted into the pressure roller mounting seat 3 and the mounting portion is fixed on the pressure roller mounting seat 3 through the screw.

[0062] In some embodiments, the diameter of the limiting column 9 is 12 mm.

[0063] In some embodiments, the end surface of the limiting column 9 facing the pressure roller mounting rod 2 is provided with a buffer pad 91, by providing the buffer pad 91, the impact force during impact can be reduced, thereby protecting the limiting column 9 and avoiding breakage.

[0064] In some embodiments, the buffer pad 91 is a silica gel sleeve or a plastic sleeve.

[0065] In some embodiments, the end surface of the limiting column 9 facing the pressure roller mounting rod 2 is curved, by such a configuration, the end surface of the limiting column 9 is more smooth, and the pressure roller mounting rod 2 is prevented from being broken.

[0066] In some embodiments, the end surface of the limiting column 9 towards the end surface of the pressure roller mounting rod 2 is an inclined surface, which is in engagement with the side surface of the pressure roller mounting rod 2 when the pressure roller mounting rod 2 is rebounded.

[0067] In some embodiments, the limiting column 9 is inclined to the pressure roller mounting seat 3, and when the pressure roller is rebounded, the axial direction of the limiting column 9 is perpendicular to the pressure roller mounting rod 2, and the direction of the impact of the pressure roller mounting rod 2 is the axial direction of the limiting column 9, so that the limiting column 9 is more likely to be broken.

[0068] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of the present application, the patent protection scope of the present application should not be limited. Any technical solutions obtained by replacing or modifying the equivalent structure or equivalent process based on the essential concept of the present application, the content described in the specification and drawings of the present application, and the direct or indirect implementation of the technical solutions of the above embodiments in other related technical fields, etc. are all included in the patent protection scope of the present application.

Claims

1. A presser wheel proximity switch anti-collision structure characterized by comprising: Comprising: A limiting post is arranged at the roller mounting base through a detachable structure, and the limiting post is located at the rebound path of the roller mounting rod, the end surface of the limiting post faces the roller mounting rod, and when the roller rebounds, the end surface of the limiting post abuts against the roller mounting rod to limit the rebound end point of the roller mounting rod.

2. The pinch roller proximity switch anti-collision structure of claim 1, wherein, The detachable structure includes a threaded hole arranged at the roller mounting base and a thread arranged on the side surface of the limiting post, and the limiting post is screwed into the inner side of the roller mounting base through the threaded hole.

3. The pinch roller proximity switch anti-collision structure of claim 2, wherein, Also comprising: An auxiliary nut is screwed at the limiting post and located at the outer side of the roller mounting base and screwed to abut against the roller mounting base.

4. The pressure roller proximity switch anti-collision structure according to claim 3, wherein The auxiliary nut is a butterfly nut.

5. The pressure roller proximity switch anti-collision structure according to claim 1, wherein, The detachable structure includes a mounting part arranged on the side surface of the limiting post and a fixing screw, the limiting post is arranged at the roller mounting base, and the mounting part is fixed at the roller mounting base through the screw.

6. The compression wheel proximity switch anti-collision structure of claim 1, wherein, The diameter of the limiting post is 10-14mm.

7. The compression wheel proximity switch anti-collision structure of claim 1, wherein, The end surface of the limiting post facing the roller mounting rod is provided with a buffer pad.

8. The compression wheel proximity switch anti-collision structure of claim 7, wherein, The buffer pad is a silica gel sleeve or a plastic sleeve.

9. The pressure roller proximity switch anti-collision structure according to claim 1, wherein, The end surface of the limiting post facing the roller mounting rod is curved.

10. The pressure roller proximity switch anti-collision structure of claim 1, wherein, The end surface of the limiting post facing the roller mounting rod is an inclined surface, and when the roller mounting rod rebounds and resets, the inclined surface is matched with the side surface of the roller mounting rod.

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