A valve seat conveying posture selection mechanism

Abstract

The present invention discloses a valve seat ring conveying posture selection mechanism, comprising a blanking plate inclined downward along the conveying direction and baffles fixed on the edges on both sides thereof, the blanking plate and the baffles together constitute a material channel for conveying the valve seat ring, a semicircular protrusion is arranged on the outer edge of the blanking plate, the inner diameter of the semicircular protrusion is smaller than the inner diameter of the inner hole at the large end, and the inner diameter of the semicircular protrusion is larger than the inner diameter of the inner hole at the small end; a pretreatment device for adjusting the initial position of the valve seat ring when entering the semicircular protrusion is arranged on the input side of the semicircular protrusion on the blanking plate, the pretreatment device comprises a slide groove extending from the outer side of the blanking plate to the inner side of the blanking plate, and the slide groove gradually rises from the outside to the inside. The present invention makes the displacement of the valve seat ring in the passing posture and the non-passing posture different, so that the valve seat ring in the passing posture is not easy to fall, thereby avoiding the risk of being mistakenly rejected and ensuring the overall conveying efficiency.

Description

Technical Field

[0001] The invention relates to the field of valve seat ring production equipment, in particular to a valve seat ring conveying posture selection mechanism. Background Art

[0002] The engine valve seat is usually pressed into the bottom hole of the cylinder head seat by the valve seat assembly equipment. The valve seat cooperates with the valve and bears high-frequency loads during the operation of the engine. It is an important component of the automobile engine, and the correctness of its assembly posture plays an important role in the normal operation of the engine.

[0003] During the valve seat conveying process, the valve seat assembly equipment usually selects the valve seat (i.e., front and back side identification, also known as conveying posture identification). After passing through the selection device, the valve seat will be conveyed to the assembly station in the same posture to ensure the correctness of the assembly posture. Figure 1 As shown, the valve seat ring 1 is in the shape of a finger ring, the inner diameter of the small end inner hole of the upper end is smaller, while the inner diameter of the large end inner hole of the lower end is larger. Therefore, the outer ring chamfer of the valve seat ring is usually used to select the valve seat ring conveying posture.

[0004] A Chinese patent (publication number: CN206010317U) discloses a valve seat ring conveying posture selection mechanism, which arranges multiple semicircular protrusions on the material channel, and sets the radius of the semicircular protrusions between the small end inner hole and the large end inner hole, so that when the valve seat ring with the large end inner hole facing downward can be screened and removed, while the valve seat ring with the small end inner hole facing downward is not affected and continues to pass, thereby realizing the conveying posture rotation of the valve seat ring well.

[0005] When the above-mentioned device is actually used, all the valve seat rings that are transported need to be moved along the outer edge of the slide to ensure that the valve seat rings that are not in a passing posture can be removed. However, since the inner diameter difference between the inner hole at the small end and the inner hole at the large end is not large, the valve seat rings that are in a passing posture will often fall off during actual use, resulting in accidental removal. Although the accuracy is guaranteed, the valve seat rings that are mistakenly removed need to be re-transported, which affects the normal transportation efficiency of the valve seat rings and the time cost. Summary of the invention

[0006] The technical problem to be solved by the present invention is that when the existing device is in use, the valve seat ring passing through the posture often falls off, causing the situation of mistaken removal, which affects the normal conveying efficiency of the valve seat ring.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] A valve seat ring conveying posture selection mechanism comprises a blanking plate inclined downward along the conveying direction and baffles fixed on its two side edges, the blanking plate and the baffles together constitute a material channel for conveying the valve seat ring, a semicircular protrusion is arranged on the outer edge of the blanking plate, the inner diameter of the semicircular protrusion is smaller than the inner diameter of the large end inner hole, and the inner diameter of the semicircular protrusion is larger than the inner diameter of the small end inner hole; a pretreatment device for adjusting the initial position of the valve seat ring when entering the semicircular protrusion is arranged on the input side of the semicircular protrusion on the blanking plate, the pretreatment device comprises a slide groove extending from the outer side of the blanking plate to the inner side of the blanking plate, and the slide groove gradually rises from the outside to the inside; a slider and a driving mechanism for driving its reciprocating motion are arranged in the slide groove, when the slider is located on the outside of the slide groove, the upper end of the slider is lower than the surface of the blanking plate, and when the slider is located on the inside of the slide groove, the upper end of the slider is higher than the surface of the blanking plate. The slider moves from outside to inside, fits the inner wall of the lower end of the valve seat ring moved there, and continues to push the valve seat ring inward until the slider is blocked by the inner side of the slide groove. Since the inner diameters of the small-end inner hole and the large-end inner hole are different, when it is conveyed in different postures, the displacement pushed inward is different, specifically: in the non-passing posture, the lower end of the valve seat ring is the large-end inner hole, so the displacement pushed is small, ensuring that it can be removed normally; and in the passing posture, the lower end of the valve seat ring is the small-end inner hole, so the displacement pushed is large, making it not easy to fall, thereby avoiding the risk of being accidentally removed, and ensuring the overall conveying efficiency.

[0009] As a further solution of the present invention: the driving mechanism is a cylinder, a hydraulic cylinder or a nut screw, which is used to drive the slider to move back and forth in the slideway.

[0010] As a further solution of the present invention: the driving mechanism includes a winding roller located on one side of the blanking plate, a traction rope is wound around the winding roller, the traction rope passes through the blanking plate and extends into the chute to connect with the slider, and the other side of the slider is connected to the inner wall of the chute on the corresponding side through a spring. The slider moves outward by winding the traction rope with the winding roller, and moves inward by the spring.

[0011] As a further solution of the present invention: the slider includes a slider body matching the slide groove, the slider body is provided with a protrusion extending upward, and the upper end of the slide groove is provided with a guide groove matching the protrusion. In this way, the width of the guide groove and the protrusion can be set smaller to avoid affecting the normal transportation of the valve seat ring.

[0012] As a further solution of the present invention, the maximum height of the protrusion extending out of the guide groove is smaller than the height of the small end inner hole and the large end inner hole, so that when pushing the valve seat ring, it fits the lower part of the valve seat ring that is smaller than the small end inner hole or the large end inner hole, thereby ensuring that the distances in the two pushing postures are different.

[0013] As a further solution of the present invention: a wire hole for the traction rope to pass through is arranged in the blanking plate.

[0014] As a further solution of the present invention: a trumpet-shaped joint is provided on the side of the wire-passing hole close to the winding roller, so as to facilitate the bending of the traction rope and avoid the situation of wear and tear.

[0015] As a further solution of the present invention: the chute is arranged perpendicular to the conveying direction.

[0016] As a further solution of the present invention, the slide groove is arranged obliquely and gradually extends from the outer side of the blanking plate to the inner side of the blanking plate along the conveying direction. In this way, when the moving speed of the slider is reasonably set, it can push the valve seat ring inward without affecting its normal conveying speed.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1) the slider moves from the outside to the inside, fits the inner wall of the lower end of the valve seat ring moved there, and continues to push the valve seat ring inward until the slider is blocked by the inner side of the slide groove. Since the inner diameters of the small end inner hole and the large end inner hole are different, when it is conveyed in different postures, the displacement pushed inward is different, specifically: in the non-passing posture, the lower end of the valve seat ring is the large end inner hole, so the displacement pushed is small, ensuring that it can be normally removed; and in the passing posture, the lower end of the valve seat ring is the small end inner hole, so the displacement pushed is large, making it not easy to fall, thereby avoiding the risk of being accidentally removed, and ensuring the overall conveying efficiency.

[0018] 2) The maximum height of the protrusion extending out of the guide groove is smaller than the height of the small end inner hole and the large end inner hole. This arrangement allows it to fit the valve seat ring located below and smaller than the small end inner hole or the large end inner hole when pushing the valve seat ring, thereby ensuring that the distances when pushing the two postures are different.

[0019] 3) The conveying chute is arranged obliquely and gradually extends from the outer side of the blanking plate to the inner side of the blanking plate along the conveying direction. In this way, when the moving speed of the slider is reasonably set, it can push the valve seat ring inward without affecting its normal conveying speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the valve seat ring.

[0021] Figure 2 It is a structural diagram of embodiment 1.

[0022] Figure 3 It is a cross-sectional schematic diagram of the pretreatment device in Example 1.

[0023] Figure 4 It is a structural diagram of embodiment 2.

[0024] In the figure: 1-valve seat ring, 11-small end inner hole, 12-large end inner hole, 2-blank plate, 3-semicircular protrusion, 31-selection gap, 4-slide groove, 41-guide groove, 5-slider, 51-spring, 6-traction rope, 7-winding roller, 8-trumpet joint, 81-wire hole, 9-baffle. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Embodiment 1:

[0027] See also Figure 1-3 , a valve seat ring conveying posture selection mechanism, comprising a blanking plate 2 inclined downward along the conveying direction and baffles 9 fixed to the edges on both sides thereof, the blanking plate 2 and the baffles 9 together constitute a material channel for conveying the valve seat ring 1, a semicircular protrusion 3 is arranged on the outer edge of the blanking plate 2, the inner diameter of the semicircular protrusion 3 is smaller than the inner diameter of the large end inner hole 12, and the inner diameter of the semicircular protrusion 3 is larger than the inner diameter of the small end inner hole 11; a pretreatment device for adjusting the initial position of the valve seat ring 1 when entering the semicircular protrusion 3 is arranged on the input side of the semicircular protrusion 3 on the blanking plate 2, the pretreatment device comprises a slide groove 4 extending from the outer side of the blanking plate 2 to the inner side of the blanking plate 2, the slide groove 4 is arranged perpendicular to the conveying direction, and the slide groove 4 gradually rises from the outside to the inside; the A slider 5 and a driving mechanism for driving its reciprocating motion are arranged in the slide groove 4. When located on the outside of the slide groove 4, the upper end of the slider 5 is lower than the surface of the blanking plate 2, and when located on the inside of the slide groove 4, the upper end of the slider 5 is higher than the surface of the blanking plate 2; the driving mechanism includes a winding roller 7 located on one side of the blanking plate 2, and a traction rope 6 is wound around the winding roller 7. The traction rope 6 passes through the blanking plate 2 and extends into the slide groove 4 to be connected with the slider 5, and the other side of the slider 5 is connected to the inner wall of the slide groove 4 on the corresponding side through a spring 51; the slider 5 includes a slider body matching the slide groove 4, and an upwardly extending protrusion is arranged on the slider body, and a guide groove 41 matching the protrusion is arranged at the upper end of the slide groove 4; the maximum height of the protrusion extending out of the guide groove 41 is less than the height of the small end inner hole 11 and the large end inner hole 12.

[0028] The working principle of the present invention is: the slider 5 moves from the outside to the inside, fits the inner wall of the lower end of the valve seat ring 1 moved there, and continues to push the valve seat ring 1 inward until the slider 5 is blocked by the inner side of the slide groove 4. Since the inner diameters of the small end inner hole 11 and the large end inner hole 12 are different, when it is transported in different postures, the displacement pushed inward is different, specifically: in the non-passing posture, the lower end of the valve seat ring 1 is the large end inner hole 12, so the displacement pushed is small, ensuring that it can be normally removed; and in the passing posture, the lower end of the valve seat ring 1 is the small end inner hole 11, so the displacement pushed inward is large, making it difficult to fall, thereby avoiding the risk of being mistakenly removed, and ensuring the overall transportation efficiency. In summary, the present invention makes the displacements pushed by the valve seat ring 1 in the passing posture and the non-passing posture different, so that the valve seat ring 1 in the passing posture is not easy to fall, thereby avoiding the risk of being mistakenly removed, and ensuring the overall transportation efficiency.

[0029] Embodiment 2:

[0030] See also Figure 4 , which is the same as the first embodiment, except that the chute 4 is arranged in a manner, specifically, the chute 4 is arranged obliquely and gradually extends from the outer side of the blanking plate 2 to the inner side of the blanking plate 2 along the conveying direction.

[0031] Embodiment three:

[0032] The embodiment is the same as the first embodiment, except for the driving method of the slider 5 , specifically, the driving mechanism is a cylinder, and the piston rod of the cylinder is connected to the slider 5 .

[0033] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A valve seat ring conveying posture selection mechanism, comprising a blanking plate inclined downward along the conveying direction and baffles fixed to the edges on both sides thereof, the blanking plate and the baffles together constitute a material channel for conveying the valve seat ring, a semicircular protrusion is arranged on the outer edge of the blanking plate, the inner diameter of the semicircular protrusion is smaller than the inner diameter of the inner hole at the large end, and the inner diameter of the semicircular protrusion is larger than the inner diameter of the inner hole at the small end; characterized in that, A pretreatment device for adjusting the initial position of the valve seat ring when it enters the semicircular protrusion is arranged on the input side of the semicircular protrusion on the blanking plate, and the pretreatment device includes a slide groove extending from the outer side of the blanking plate to the inner side of the blanking plate, and the slide groove gradually rises from the outside to the inside; a slider and a driving mechanism for driving its reciprocating motion are arranged in the slide groove, and the upper end of the slider is lower than the surface of the blanking plate when located on the outer side of the slide groove, and the upper end of the slider is higher than the surface of the blanking plate when located on the inner side of the slide groove.

2. The valve seat conveying posture selection mechanism according to claim 1, characterized in that: The driving mechanism is a cylinder, a hydraulic cylinder or a nut screw.

3. The valve seat conveying posture selection mechanism according to claim 1, characterized in that: The driving mechanism includes a winding roller located on one side of the blanking plate, a traction rope is wound around the winding roller, the traction rope passes through the blanking plate and extends into the slide groove to be connected to the slider, and the other side of the slider is connected to the inner wall of the slide groove on the corresponding side through a spring.

4. The valve seat conveying posture selection mechanism according to claim 3, characterized in that: The slider comprises a slider body matched with the slide slot, the slider body is provided with a protrusion extending upward, and the upper end of the slide slot is provided with a guide groove matched with the protrusion.

5. The valve seat conveying posture selection mechanism according to claim 4, characterized in that: The maximum height of the protrusion extending out of the guide groove is smaller than the height of the inner hole at the small end and the inner hole at the large end.

6. The valve seat conveying posture selection mechanism according to claim 4, characterized in that: A wire hole for the traction rope to pass through is arranged in the blanking plate.

7. The valve seat conveying posture selection mechanism according to claim 6, characterized in that: A trumpet-shaped joint is arranged on one side of the wire-passing hole close to the winding roller.

8. The valve seat conveying posture selection mechanism according to any one of claims 1 to 7, characterized in that: The chute is arranged perpendicular to the conveying direction.

9. The valve seat conveying posture selection mechanism according to any one of claims 1 to 7, characterized in that: The slide groove is arranged obliquely and gradually extends from the outer side of the lower material plate to the inner side of the lower material plate along the conveying direction.

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