Valve seat ring reversing assembly and conveying line

Abstract

The utility model discloses a valve seat ring reversing assembly and a conveying line, which comprise a speed reducing part, a speed reducing part, a reversing part and a driving part, wherein the speed reducing part is provided with a speed reducing surface opposite to the conveying direction of a valve seat ring; the reversing part is perpendicular to the speed reducing part, the projection of the reversing part on a vertical plane tangent to the speed reducing part is a reversing curve, the tangent line of the reversing curve from the top point to the bottom point is changed from the vertical state to the horizontal state, and the side face of the valve seat ring moves from the high position to the low position along the intersecting line of the speed reducing part and the reversing part all the time. According to the utility model, the tangent planes of the top end and the bottom end of the reversing piece are respectively vertical and horizontal, so that the axis of the valve seat ring entering the cavity gradually rotates clockwise from the horizontal direction until the valve seat ring leaves the cavity and becomes vertical in the process of falling along the reversing piece, and the contact surface of the valve seat ring and the conveying belt is changed from the side surface to the end surface; the friction mode is changed from rolling friction to static friction, and the surface of the valve seat ring is prevented from being scratched.

Description

Technical Field

[0001] The utility model relates to the technical field of valve seat production, in particular to a valve seat reversing assembly and a conveying line. Background Art

[0002] Valve seats are usually made of heat-resistant and wear-resistant materials, such as steel or heat-resistant alloys, which are used to ensure a tight fit with the valve seat when the valve closes to prevent combustion gas leakage. The preparation process of the valve seat is as follows: select appropriate materials according to the working conditions of the engine, cast or forge to make a preliminary shape, machine to achieve the required dimensional accuracy and surface finish, heat treatment to improve its mechanical properties, surface treatment to improve its wear resistance and corrosion resistance, perform surface quality inspection on the valve seat to ensure it meets the quality standards, and install the valve seat on the engine cylinder head. Among them, the surface quality inspection of the valve seat usually detects whether there are scratches, cracks, depressions or other defects affecting appearance and function. If the surface quality of the valve seat does not meet the requirements, the following impacts on the engine will occur: reduced sealing performance, weakened wear resistance, deteriorated heat dissipation performance, and reduced reliability.

[0003] The inventor of this application installs an eddy current flaw detector on the conveying line of the valve seat to perform surface quality inspection on the valve seat. It uses the eddy current effect to perform non-destructive inspection on the valve seat. By monitoring the impedance change of the detection coil, it can further judge whether there are defects in the material to be inspected and information such as the location and size of the defects. When performing axial inspection on the valve seat, that is, detecting the longitudinal defects of the valve seat, the axis of the valve seat coincides with the axis of the detection coil, so that the valve seat to be detected can be placed at the center position of the detection coil to ensure that the magnetic field generated by the detection coil can evenly cover the entire detection area. At this time, the side of the valve seat is tangent to the conveying belt, so that when the valve seat leaves the eddy current flaw detector, it has a rolling friction with the conveying belt, which makes the movement speed of the valve seat relatively fast, affecting the subsequent weighing machine to weigh it, and its side will rub against the conveying belt to cause scratches, reducing the surface quality of the valve seat. Summary of the Utility Model

[0004] In order to solve the problems that the speed of the valve seat is too fast after axial inspection by the eddy current flaw detector and it is easy to rub against the conveying belt and affect the surface quality, the utility model provides a valve seat reversing assembly and a conveying line, and the specific technical solutions are as follows:

[0005] The utility model includes a commutation component body for changing a valve seat ring with a horizontal axis at a high position into a valve seat ring with a vertical axis at a low position. The commutation component body includes: a decelerating member having a decelerating surface opposite to the conveying direction of the valve seat ring; a commutation member perpendicular to the decelerating member, and the projection of the commutation member on the vertical plane tangent to the decelerating member is a commutation curve, and the tangent of the commutation curve changes from vertical to horizontal from the vertex to the bottom point, and the side surface of the valve seat ring always moves from a high position to a low position along the intersection line of the decelerating member and the commutation member.

[0006] Further, the centers of curvature of both the decelerating member and the commutation member are on the same side as the valve seat ring.

[0007] Further, the projection of the decelerating member on the vertical plane tangent to the commutation member is a deceleration curve, and the deceleration curve is a parabola opening downward. A deceleration pad that completely fits the surface is provided on the side of the decelerating member close to the valve seat ring.

[0008] Preferably, the tangent line at the vertex of the deceleration curve is a horizontal line.

[0009] Preferably, the decelerating member and the commutation member form a cavity. The top end of the commutation member is the starting position for the valve seat ring to enter the cavity, and the bottom end of the commutation curve is the ending position for the valve seat ring to leave the cavity. When the valve seat ring enters the cavity, the side surface of the valve seat ring is parallel to the tangent plane at the top end of the commutation member. When the valve seat ring leaves the cavity, the side surface of the valve seat ring is parallel to the tangent plane at the bottom end of the commutation member, that is, perpendicular to the tangent plane at the top end of the commutation member.

[0010] Preferably, a deceleration pad that completely fits the surface is provided on the side of the commutation member close to the cavity. The minimum distance between the side of the deceleration pad close to the cavity and the side surface of the valve seat ring just entering the cavity is 0.2 - 0.6 mm.

[0011] A conveyor line includes: a valve seat ring commutation component, the valve seat ring enters from a high position of the commutation component body and leaves from a low position of the commutation component body; conveyor belts respectively arranged at the high - position entrance and the low - position exit of the commutation component body. The conveyor belts include an entrance conveyor belt and an exit conveyor belt. The conveying surface of the entrance conveyor belt at the high - position entrance is perpendicular to the tangent plane at the top end of the commutation member and parallel to the tangent plane at the top end of the decelerating member. The conveying surface of the exit conveyor belt at the low - position entrance coincides with the tangent plane at the bottom end of the commutation member; and an eddy current flaw detector arranged on the entrance conveyor belt.

[0012] It can be seen from the above technical solutions that the utility model has the following beneficial effects:

[0013] In the present utility model, by providing a reversing member with a vertical and a horizontal cutting surface at the top and bottom respectively, when the valve seat ring entering the cavity falls along it, its axis gradually rotates clockwise from horizontal until it leaves the cavity and becomes vertical, so that the contact surface between the valve seat ring and the conveyor belt changes from the side to the end surface, and the friction mode changes from rolling friction to static friction, avoiding scratching on the surface of the valve seat ring; secondly, by providing a decelerating member that always slides frictionally against the side surface of the valve seat ring and a reversing member that always slides frictionally against the end surface of the valve seat ring, the falling speed of the valve seat ring is reduced until when it leaves the cavity and contacts the conveyor belt, the falling speed is zero, which is convenient for it to enter the next working station for surface inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of the first embodiment of the present utility model;

[0015] Figure 2 It is a front view of the first embodiment of the present utility model;

[0016] Figure 3 It is a schematic structural diagram of the second embodiment of the present utility model.

[0017] In the figure: 1. Reversing assembly body; 2. Eddy current flaw detector; 3. Conveyor belt; 4. Valve seat ring; 12. Decelerating member; 13. Reversing member; 14. Decelerating pad; 31. Inlet conveyor belt; 32. Outlet conveyor belt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0019] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "inside", "outside", "above", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0020] Definition: The end surface of the valve seat ring is perpendicular to its axis, and the side surface of the valve seat ring is parallel to its axis.

[0021] Embodiment 1

[0022] As Figures 1 to 2As shown in the figure, Embodiment 1 includes a commutation component body 1 for changing the valve seat ring 4 with a horizontal axis at a high position into a valve seat ring 4 with a vertical axis at a low position.

[0023] Specifically, the inlet of the commutation component body 1 is at a high position, and its outlet is at a low position, so that the valve seat ring 4 entering from the high inlet can move to the low outlet under the action of gravity, thereby simplifying the structure of Embodiment 1, and further realizing the change of the axis of the valve seat ring 4 from a horizontal line to a vertical line.

[0024] Furthermore, the commutation component body 1 includes: a deceleration member 12 having a deceleration surface opposite to the conveying direction of the valve seat ring 4; a commutation member 13 perpendicular to the deceleration member 12, and the projection of the commutation member 13 on the vertical plane tangent to the deceleration member 12 is a commutation curve, and the tangent of the commutation curve from the vertex to the bottom point changes from vertical to horizontal, and the side surface of the valve seat ring 4 always moves from a high position to a low position along the intersection line of the deceleration member 12 and the commutation member 13.

[0025] Specifically, the valve seat ring 4 enters the commutation component body 1 along the conveying belt 3, and the opposite surface in its conveying direction is the surface provided on the falling trajectory of the valve seat ring 4 after it leaves the conveying belt 3, so that the side surface of the valve seat ring 4 is always in contact with the deceleration member 12 during the falling process, and thus the side surface of the valve seat ring 4 forms a sliding friction with the deceleration member 12.

[0026] Secondly, the commutation surface of the commutation member 13 intersects with the deceleration surface of the deceleration member 12, and the normal lines at the same point of the intersection are perpendicular, that is, the commutation surface of the commutation member 13 is perpendicular to the deceleration surface of the deceleration member 12, so that the commutation surface of the commutation member 13 can project a commutation curve on the vertical plane tangent to the deceleration surface of the deceleration member 12. Furthermore, when the end surface of the valve seat ring 4 slides down along the commutation surface of the commutation member 13, the commutation surface can provide frictional force to reduce its speed, and its side surface can always intersect with the deceleration surface at a line, and thus the two form a sliding friction, so that during the falling process of the valve seat ring 4, the deceleration surface can always provide frictional force to it to further reduce its speed.

[0027] Secondly, the valve seat ring 4 enters from the vertex of the commutation curve and slides out from its bottom point. The tangent line at the vertex of the commutation curve is a vertical line, and the tangent line at the bottom point is a horizontal line. That is, the inlet section plane of the commutation surface of the commutation member 13 is a vertical plane, and its outlet section plane is a horizontal plane. Furthermore, when the valve seat ring 4 contacts the commutation surface of the commutation member 13, the axis of the valve seat ring 4 is perpendicular to the commutation surface of the commutation member 13, that is, the end face of the valve seat ring 4 is parallel to the commutation surface of the commutation member 13. Furthermore, when the valve seat ring 4 continues to fall along the commutation surface of the commutation member 13, its axis is always perpendicular to the section plane of the commutation surface of the commutation member 13. Furthermore, the axis of the valve seat ring 4 gradually rotates clockwise from horizontal until it slides out from the outlet of the commutation surface of the commutation member 13, and its axis becomes vertical. Furthermore, the side surface of the valve seat ring 4 no longer contacts the conveyor belt 3, but its end face contacts the conveyor belt 3, avoiding wear on its side surface. Furthermore, the friction mode between the valve seat ring 4 and the conveyor belt 3 changes from rolling friction to sliding friction, reducing the speed of the valve seat ring 4 and ensuring the accuracy during subsequent measurement at the next station.

[0028] Furthermore, the centers of curvature of the deceleration surface of the deceleration member 12 and the commutation surface of the commutation member 13 are both on the same side as the valve seat ring 4.

[0029] Specifically, the centers of curvature being on the same side as the valve seat ring 4 causes the deceleration surface of the deceleration member 12 and the commutation surface of the commutation member 13 to both bend towards the valve seat ring 4. Furthermore, during the falling process of the valve seat ring 4, its end face can always contact the commutation surface of the commutation member 13 to form sliding friction, causing its axis to gradually rotate clockwise during the falling process until it changes from horizontal to vertical. Moreover, it also enables the commutation surface of the commutation member 13 to always provide frictional force to the valve seat ring 4 to reduce its falling speed.

[0030] Furthermore, the projection of the deceleration surface of the deceleration member 12 on the vertical plane tangent to the commutation surface of the commutation member 13 is a deceleration curve, and this deceleration curve is a parabola opening downward. A deceleration pad 14 that completely fits the surface is provided on the side of the deceleration surface of the deceleration member 12 close to the valve seat ring 4.

[0031] Specifically, as is known by common sense, the movement trajectory of the valve seat ring 4 during the falling process is a parabola opening downward, and the deceleration curve is also a parabola opening downward. According to the actual production conditions, the actual parabola equation can be calculated through the valve seat ring 4, and then the shape of the deceleration curve can be determined, and further the shape of the deceleration surface of the deceleration member 12 can be determined, so that the side surface of the valve seat ring 4 can always contact the deceleration surface of the deceleration member 12 during the falling process and intersect at a line. Furthermore, the side surface of the valve seat ring 4 forms sliding friction with it. Furthermore, the deceleration surface of the deceleration member 12 can further reduce the speed of the valve seat ring 4. Further, the deceleration pad 14 is made of a material with a large frictional force to further reduce the speed of the valve seat ring 4.

[0032] Further, the tangent line at the vertex of the deceleration curve is horizontal.

[0033] Specifically, the top tangent plane of the deceleration surface of the decelerating member 12 is a horizontal plane, and the bottom tangent plane of the deceleration surface of the decelerating member 12 is a vertical plane. When the valve seat ring 4 enters the reversing surface of the reversing member 13 and contacts the deceleration surface of the decelerating member 12, the valve seat ring 4 can smoothly and without impact contact the deceleration surface of the decelerating member 12, so that the side surface of the valve seat ring 4 is always in contact with the deceleration surface of the decelerating member 12.

[0034] Further, a cavity is formed between the deceleration surface of the decelerating member 12 and the reversing surface of the reversing member 13. The top of the reversing surface of the reversing member 13 is the starting position for the valve seat ring 4 to enter the cavity, and the bottom of the reversing curve is the ending position for the valve seat ring 4 to leave the cavity. When the valve seat ring 4 enters the cavity, the side surface of the valve seat ring 4 is parallel to the tangent plane at the top of the reversing surface of the reversing member 13. When the valve seat ring 4 leaves the cavity, the side surface of the valve seat ring 4 is parallel to the tangent plane at the bottom of the reversing surface of the reversing member 13, that is, perpendicular to the tangent plane at the top of the reversing surface of the reversing member 13.

[0035] Specifically, both the deceleration surface of the decelerating member 12 and the reversing surface of the reversing member 13 are curved surfaces, and their centers of curvature are on the same side as the valve seat ring 4, so that the valve seat ring 4 moves within the cavity formed by the deceleration surface of the decelerating member 12 and the reversing surface of the reversing member 13. Secondly, when the valve seat ring 4 enters the cavity, its side surface is parallel to the tangent plane at the top of the reversing surface of the reversing member 13, so that the axis of the valve seat ring 4 does not change suddenly when it enters the cavity, and then the valve seat ring 4 smoothly enters the cavity, thus avoiding damage caused by the end surface of the valve seat ring 4 colliding with the reversing surface of the reversing member 13 when it enters the cavity. Secondly, when the valve seat ring 4 leaves the cavity, the axis of the valve seat ring 4 changes from horizontal to vertical, thus realizing the position change of the valve seat ring 4 relative to the conveying belt 3.

[0036] Further, a deceleration pad 14 that completely fits the surface is provided on the side of the reversing surface of the reversing member 13 close to the cavity. The minimum distance between the side of the deceleration pad 14 close to the cavity and the side surface of the valve seat ring 4 that has just entered the cavity is 0.2 - 0.6 mm.

[0037] Specifically, when the valve seat ring 4 enters the cavity, its side surface is parallel to the deceleration pad 14, so that there is a parallel space of 0.2 mm between the side surface of the valve seat ring 4 and the surface of the deceleration pad 14. When the valve seat ring 4 enters the cavity, the deceleration pad 14 will not block the valve seat ring 4. When the valve seat ring 4 continues to fall, its side surface forms a sliding friction with the deceleration pad 14, while changing its axis, reducing its falling speed.

[0038] Embodiment 2

[0039] As Figure 3As shown in the figure, Embodiment 2 of the present utility model includes: the valve seat ring 4 commutation assembly of Embodiment 1, where the valve seat ring 4 enters from the high position of the commutation assembly body 1 and exits from the low position of the commutation assembly body 1; conveyor belts 3 respectively arranged at the high-position entrance and low-position exit of the commutation assembly body 1, and the conveyor belt 3 includes an entrance conveyor belt 31 and an exit conveyor belt 32. The conveying surface of the entrance conveyor belt 31 at the high-position entrance is perpendicular to the tangent plane at the top of the commutation surface of the commutation member 13 and parallel to the tangent plane at the top of the deceleration surface of the deceleration member 12. The conveying surface of the exit conveyor belt 32 at the low-position entrance coincides with the tangent plane at the bottom of the commutation surface of the commutation member 13; and an eddy current flaw detector 2 arranged on the entrance conveyor belt 31.

[0040] Specifically, when the valve seat ring 4 rolls out of the eddy current flaw detector 2, its side is tangent to the entrance conveyor belt 31 to form a rolling friction. The valve seat ring 4 enters the cavity along the surface of the entrance conveyor belt 31. During this process, its rolling trajectory is a straight line parallel to the length direction of the entrance conveyor belt 31, so that the position where the valve seat ring 4 enters the cavity can be determined. And when the valve seat ring 4 enters the cavity, its side is always parallel to the tangent plane at the top of the commutation surface of the commutation member 13, so that after the valve seat ring 4 enters the cavity, a parallel space of 0.2 mm can be formed between its side and the deceleration pad 14, thereby ensuring that the valve seat ring 4 does not collide suddenly with the commutation surface of the commutation member 13 and the deceleration surface of the deceleration member 12 during the falling process and causing damage. Secondly, after the valve seat ring 4 leaves the cavity, its axis is perpendicular to the exit conveyor belt 32, so that the exit conveyor belt 32 can form a static friction with the end face of the valve seat ring 4, and then the exit conveyor belt 32 can convey the valve seat ring 4 to the next station for further surface inspection.

[0041] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

[0042] The technologies, shapes, and structures not described in detail in the present utility model are all well-known technologies.

Claims

1. A valve seat ring commutation assembly, comprising a commutation assembly body (1) for changing a valve seat ring (4) with a horizontal axis at a high position into a valve seat ring (4) with a vertical axis at a low position, characterized in that, The commutation component body (1) includes: A deceleration member (12) having a deceleration surface opposite to the conveying direction of the valve seat ring (4); A commutation member (13) perpendicular to the deceleration member (12), the projection of the commutation member (13) on the vertical plane tangent to the deceleration member (12) being a commutation curve, the tangent of which changes from vertical to horizontal from the vertex to the bottom point, and the side surface of the valve seat ring (4) always moves from a high position to a low position along the intersection line of the deceleration member (12) and the commutation member (13).

2. The valve seat ring commutation assembly according to claim 1, characterized in that: The centers of curvature of the deceleration member (12) and the commutation member (13) are on the same side as the valve seat ring (4).

3. The valve seat ring commutation assembly according to claim 2, wherein: The projection of the deceleration member (12) on the vertical plane tangent to the commutation member (13) is a deceleration curve, which is a parabola opening downward. A deceleration pad (14) that completely fits the surface is provided on the side of the deceleration member (12) close to the valve seat ring (4).

4. The valve seat ring commutation assembly according to claim 3, wherein: The tangent at the vertex of the deceleration curve is a horizontal line.

5. The valve seat ring commutation assembly according to claim 4, characterized in that: A cavity is formed between the deceleration member (12) and the commutation member (13). The top end of the commutation member (13) is the starting position for the valve seat ring (4) to enter the cavity, and the bottom end of the commutation curve is the ending position for the valve seat ring (4) to leave the cavity. When the valve seat ring (4) enters the cavity, the side surface of the valve seat ring (4) is parallel to the tangent plane at the top end of the commutation member (13). When the valve seat ring (4) leaves the cavity, the side surface of the valve seat ring (4) is parallel to the tangent plane at the bottom end of the commutation member (13), that is, perpendicular to the tangent plane at the top end of the commutation member (13).

6. The valve seat ring commutation assembly according to claim 5, characterized in that: A deceleration pad (14) that completely fits the surface is provided on the side of the commutation member (13) close to the cavity. The minimum distance between the side of the deceleration pad (14) close to the cavity and the side surface of the valve seat ring (4) just entering the cavity is 0.2 - 0.6 mm.

7. A conveyor line, characterized in that, It includes: The valve seat ring (4) commutation component according to any one of claims 1 to 6, where the valve seat ring (4) enters from a high position of the commutation component body (1) and leaves from a low position of the commutation component body (1); Conveyor belts (3) respectively provided at the high-position entrance and low-position exit of the commutation component body (1). The conveyor belt (3) includes an entrance conveyor belt (31) and an exit conveyor belt (32). The conveying surface of the entrance conveyor belt (31) at the high-position entrance is perpendicular to the tangent plane at the top end of the commutation member (13) and parallel to the tangent plane at the top end of the deceleration member (12). The conveying surface of the exit conveyor belt (32) at the low-position exit coincides with the tangent plane at the bottom end of the commutation member (13); and An eddy current flaw detector (2) provided on the entrance conveyor belt (31).

Images