Self-aligning guiding mechanism

Abstract

The present invention belongs to the technical field of centering guiding mechanisms, and particularly relates to a self-centering guiding mechanism, which includes a carrier and eccentric centering guiding components installed at both ends thereof. The eccentric centering guiding component includes a positioning seat, a movable seat, a first guide wheel, a second guide wheel, a tension seat and a top block. The positioning seat and the tension seat are fixed on the carrier. The positioning seat rotatably supports the movable seat. The first guide wheel and the second guide wheel are respectively installed on both sides of the movable seat. The area between the first guide wheel and the second guide wheel serves as a centering conveying area. A top block with an outward displacement tendency is installed on the tension seat. The top block abuts against one side of the movable seat, so that the movable seat has a tendency to rotate and reduce the width of the centering conveying area. The present invention is mainly composed of a carrier and two eccentric centering guiding components. The two guide wheels in the eccentric centering guiding component are fixed on a movable seat. The top block installed on the tension seat is used to provide torque for the movable seat, so that the two guide wheels can closely adhere to the moving object to achieve centering guiding.

Description

Technical Field

[0001] The present invention belongs to the technical field of centering and guiding mechanisms, and particularly relates to a self-centering guiding mechanism. Background Art

[0002] The centering and guiding mechanism is a common mechanical structure, which is often involved in the straight-line running guiding process. After retrieval, there are mainly two existing centering and guiding mechanisms:

[0003] Prior Art One: As shown in Figure 7 and Figure 8 , a centering and guiding mechanism includes a moving part 1a, a bearing 1b and a guide wheel 1c. A bearing 1b is installed between the moving part 1a and the guide wheel 1c, and the guiding is realized through the guide wheel 1c. Usually, in order to correct the installation error and the error of the straightness of the guide rail, the guide wheel 1c is made into an eccentric wheel to facilitate adjustment during installation. However, in the above-mentioned scheme, there must be a gap between the guide wheel 1c and the moving object (such as the guide rail), and it is impossible to achieve particularly precise guiding.

[0004] Prior Art Two: As shown in Figure 9 and Figure 10 , another centering and guiding mechanism includes a moving carrier 2a, a moving carrier 2b, a mounting shaft 2c, a guide wheel 2d and a spring support rod 2e. The moving carrier 2a supports the guide wheel 2d through the mounting shaft 2c, and the moving carrier 2b is connected to the guide wheel 2d through the spring support rod 2e. Through spring support, the guide wheel 2d can be closely attached to the guide rail to achieve relatively stable guiding. However, this scheme still has drawbacks. In order to adapt to a relatively large load change, it is necessary to use springs to closely attach the guide wheel 2d to the moving object (such as the guide rail). It is often difficult to adjust the two springs to complete consistency, resulting in misalignment of the moving object (such as the guide rail).

[0005] Therefore, it is necessary to optimize and improve the existing centering and guiding mechanisms. Summary of the Invention

[0006] The purpose of the present invention is to overcome the above problems existing in the prior art and provide a self-centering guiding mechanism.

[0007] To achieve the above technical purpose and reach the above technical effect, the present invention is realized through the following technical solutions:

[0008] The present invention provides a self-aligning guiding mechanism, which includes a carrier and eccentric alignment guiding components installed at both ends thereof. The eccentric alignment guiding components include a positioning seat, a movable seat, a first guide wheel, a second guide wheel, a tension seat and a top block. The positioning seat and the tension seat are fixed on the carrier. The positioning seat rotatably supports the movable seat. The first guide wheel and the second guide wheel are respectively installed on both sides of the movable seat. The area between the first guide wheel and the second guide wheel serves as an alignment conveying area. A top block with a tendency to displace outward is installed on the tension seat. The top block abuts against one side of the movable seat, so that the movable seat has a tendency to rotate and reduce the width of the alignment conveying area.

[0009] Further, in the self-aligning guiding mechanism as described above, the eccentric alignment guiding components at both ends of the carrier are symmetrically distributed about the center. The length direction of the connection line of the rotation centers of the movable seats in the two eccentric alignment guiding components is consistent with the moving and conveying direction of the moving object.

[0010] Further, in the self-aligning guiding mechanism as described above, a protruding positioning shaft is provided in the positioning seat, a positioning groove is formed in the movable seat, the positioning shaft extends into the positioning groove, and a limiting portion with a larger diameter is provided on the shaft body of the positioning shaft below the positioning groove, and an anti-detachment buckle is installed on the shaft body above the positioning groove.

[0011] Further, in the self-aligning guiding mechanism as described above, the outer diameters of the wheel bodies of the first guide wheel and the second guide wheel are equal or unequal.

[0012] Further, in the self-aligning guiding mechanism as described above, the distances from the center points of the first guide wheel and the second guide wheel to the rotation center of the movable seat are equal or unequal.

[0013] Further, in the self-aligning guiding mechanism as described above, the tension seat is arranged in the inner or outer area of the positioning seat.

[0014] Further, in the self-aligning guiding mechanism as described above, a curved surface is provided on the outer side of the top block to facilitate always abutting against the movable seat.

[0015] Further, in the self-aligning guiding mechanism as described above, an elastic system is provided in the tension seat to make the top block have a tendency to displace outward.

[0016] Further, in the self-aligning guiding mechanism as described above, the elastic system includes a movable cavity, a push block, a support rod and a compression spring. The movable cavity is arranged in the tension seat. A sliding hole for cooperating with the support rod is formed at one end of the movable cavity. A push block is slidably limited in the movable cavity. One end of the push block is fixed with a support rod for connecting the top block, and a compression spring is limited between the other end and the other end of the movable cavity.

[0017] Furthermore, for the self-aligning guiding mechanism as described above, the movable cavity is open on the side close to the compression spring. A movable bottom block for supporting the compression spring is screwed in the movable cavity, and a hexagonal groove or hexagonal protrusion for facilitating the adjustment of its position by a wrench is provided at the outer end of the movable bottom block.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The self-aligning guiding mechanism provided by the present invention is scientifically and reasonably designed. It mainly consists of a carrier and two paired eccentric self-aligning guiding components for realizing linear guiding. The two guide wheels in the eccentric self-aligning guiding component are fixed on a movable seat, and the top block installed on the tension seat is used to provide torque for the movable seat, so that the two guide wheels can closely adhere to the moving object to achieve self-aligning guiding.

[0020] 2. In the present invention, the tension seat of the eccentric self-aligning guiding component can adjust the preload of the compression spring according to the impact force change of the motion mechanism, and can adapt to complex application scenarios.

[0021] Of course, it is not necessary for any product implementing the present invention to achieve all the above advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 It is a top view structural schematic diagram of the present invention;

[0024] Figure 2 It is a schematic diagram of the use state of the present invention;

[0025] Figure 3 It is a three-dimensional structural schematic diagram of an angle of the present invention after omitting one side of the eccentric self-aligning guiding component;

[0026] Figure 4 It is a three-dimensional structural schematic diagram of another angle of the present invention after omitting one side of the eccentric self-aligning guiding component;

[0027] Figure 5 It is a structural schematic diagram of the elastic system in Embodiment 1 of the present invention;

[0028] Figure 6 It is a structural schematic diagram of the elastic system in Embodiment 2 of the present invention;

[0029] Figure 7 It is a structural schematic diagram of the prior art as a whole;

[0030] Figure 8 is a schematic structural view of a part of the prior art;

[0031] Figure 9 is a schematic structural view of the second prior art;

[0032] Figure 10 is a sectional schematic view of the second prior art;

[0033] In the drawings, the list of components represented by each reference numeral is as follows:

[0034] 1 - carrier, 2 - positioning seat, 3 - movable seat, 4 - first guide wheel, 5 - second guide wheel, 6 - tension seat, 601 - movable cavity, 602 - push block, 603 - support rod, 604 - compression spring, 605 - movable bottom block, 7 - top block, 8 - moving object. Specific embodiments

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0036] Embodiment 1

[0037] As Figures 1-5 shown, this embodiment is a self - centering guiding mechanism, which is characterized in that it includes a carrier 1 and eccentric centering guiding components installed at both ends thereof. The eccentric centering guiding components include a positioning seat 2, a movable seat 3, a first guide wheel 4, a second guide wheel 5, a tension seat 6 and a top block 7. The positioning seat 2 and the tension seat 6 are fixed on the carrier 1, and the tension seat 6 is arranged in the inner or outer area of the positioning seat 2. The positioning seat 2 rotatably supports the movable seat 3, and the first guide wheel 4 and the second guide wheel 5 that can rotate independently are installed on both sides of the movable seat 3 respectively. The area between the first guide wheel 4 and the second guide wheel 5 is used as the centering conveying area. A top block 7 with an outward displacement trend is installed on the tension seat 6, and the top block 7 abuts against one side of the movable seat 3, so that the movable seat 3 has a tendency to rotate and reduce the width of the centering conveying area.

[0038] In this embodiment, the eccentric centering guiding components at both ends of the carrier 1 are symmetrically distributed about the center, and the length direction of the connection line of the rotation centers of the movable seats 3 in the two eccentric centering guiding components is consistent with the moving and conveying direction of the moving object 8.

[0039] In this embodiment, a protruding positioning shaft is provided in the positioning seat 2, a positioning groove is formed in the movable seat 3, the positioning shaft extends into the positioning groove, and a limiting portion with a larger diameter is provided on the shaft body of the positioning shaft below the positioning groove, and an anti - detachment buckle is installed on the shaft body above the positioning groove.

[0040] In this embodiment, the outer diameters of the wheels of the first guide wheel 4 and the second guide wheel 5 are equal, and the distances from the centers of the first guide wheel 4 and the second guide wheel 5 to the rotation center of the movable seat 3 are equal.

[0041] In this embodiment, a curved surface is provided on the outer side of the top block 7 to facilitate always abutting against the movable seat. The top block 7 is a hard block or an elastic block.

[0042] In this embodiment, an elastic system is provided in the tension seat 6 to make the top block 7 have a tendency to displace outward. The elastic system includes a movable cavity 601, a push block 602, a support rod 603, and a compression spring 604. The movable cavity 601 is arranged in the tension seat 6. A sliding hole for cooperating with the support rod 603 is opened at one end of the movable cavity 601. The push block 602 is slidably limited in the movable cavity 601. One end of the push block 602 is fixed with a support rod 603 for connecting the top block 7, and a compression spring 604 is limited between the other end and the other end of the movable cavity 601.

[0043] In this embodiment, the compression spring 604 is set as a constant - diameter spring or a variable - diameter spring.

[0044] A specific application of this embodiment is as follows: The self - centering guiding mechanism provided in this embodiment is scientifically and reasonably designed. It mainly consists of a carrier 1 and two eccentric centering guiding components used in pairs for realizing linear guiding. The two guide wheels in the eccentric centering guiding component are fixed on a movable seat 3. The top block 7 installed on the tension seat 6 is used to provide torque for the movable seat 3, so that the two guide wheels can closely adhere to the moving object 8 to achieve centering guiding. The tension seat 6 of the eccentric centering guiding component can adjust the pre - load of the compression spring 604 according to the change of the impact force of the motion mechanism, and can adapt to complex application scenarios.

[0045] Embodiment Two

[0046] This embodiment is basically the same as Embodiment One, and the differences are as Figure 6 shown. The side of the movable cavity 601 close to the compression spring 604 is open, and a movable bottom block 605 for supporting the compression spring 604 is screwed in the movable cavity 601. A hexagonal groove or a hexagonal protrusion for facilitating the adjustment of its position by a wrench is opened at the outer end of the movable bottom block 605.

[0047] Embodiment Three

[0048] This embodiment is basically the same as the first embodiment, except that the outer diameters of the wheels of the first guide wheel 4 and the second guide wheel 5 are equal, and the distances from the centers of the first guide wheel 4 and the second guide wheel 5 to the rotation center of the movable seat 3 are not equal.

[0049] Embodiment Four

[0050] This embodiment is basically the same as the first embodiment, except that the outer diameters of the wheels of the first guide wheel 4 and the second guide wheel 5 are not equal, and the distances from the centers of the first guide wheel 4 and the second guide wheel 5 to the rotation center of the movable seat 3 are equal.

[0051] Embodiment Five

[0052] This embodiment is basically the same as the first embodiment, except that the outer diameters of the wheels of the first guide wheel 4 and the second guide wheel 5 are not equal, and the distances from the centers of the first guide wheel 4 and the second guide wheel 5 to the rotation center of the movable seat 3 are not equal.

[0053] The preferred embodiments of the present invention disclosed above are only helpful for explaining the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments. Obviously, many modifications and changes can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. Self-centering guiding mechanism, Characterized in that, it includes a carrier and eccentric centering guiding components installed at both ends thereof. The eccentric centering guiding components include a positioning seat, a movable seat, a first guide wheel, a second guide wheel, a tension seat and a top block. The positioning seat and the tension seat are fixed on the carrier. The positioning seat rotatably supports the movable seat. The first guide wheel and the second guide wheel are respectively installed on both sides of the movable seat. The area between the first guide wheel and the second guide wheel serves as a centering conveying area. A top block with an outward displacement tendency is installed on the tension seat. The top block abuts against one side of the movable seat, so that the movable seat has a tendency to rotate and reduce the width of the centering conveying area; The eccentric centering guiding components at both ends of the carrier are symmetrically distributed about the center. The length direction of the connection line of the rotation centers of the movable seats in the two eccentric centering guiding components is consistent with the moving conveying direction of the moving object; A protruding positioning shaft is provided in the positioning seat. A positioning groove is opened in the movable seat. The positioning shaft extends into the positioning groove. A limiting portion with a larger diameter is provided on the shaft body of the positioning shaft below the positioning groove. An anti-detachment buckle is installed on the shaft body above the positioning groove; A curved surface facilitating continuous abutment against the movable seat is provided on the outer side of the top block; An elastic system enabling the top block to have an outward displacement tendency is provided in the tension seat. The elastic system includes a movable cavity, a push block, a support rod and a compression spring. The movable cavity is arranged in the tension seat. A sliding hole matching with the support rod is opened at one end of the movable cavity. The push block is slidably limited in the movable cavity. One end of the push block is fixed with a support rod for connecting the top block, and a compression spring is limited between the other end and the other end of the movable cavity.

2. The self-centering guiding mechanism according to claim 1, Characterized in that: The outer diameters of the wheel bodies of the first guide wheel and the second guide wheel are equal or unequal.

3. The self-centering guiding mechanism according to claim 1, Characterized in that: The distances from the center points of the first guide wheel and the second guide wheel to the rotation center of the movable seat are equal or unequal.

4. The self-centering guiding mechanism according to claim 1, Characterized in that: The tension seat is arranged in the inner or outer area of the positioning seat.

5. The self-centering guiding mechanism according to claim 1, Characterized in that: The side of the movable cavity close to the compression spring is an opening. An activity bottom block for supporting the compression spring is screwed in the movable cavity. A hexagonal groove or hexagonal protrusion facilitating wrench adjustment of its position is opened at the outer end of the activity bottom block.

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