A stable feeding system for ring-shaped workpieces

Abstract

This utility model relates to the field of feeding equipment, and more particularly to a stable feeding system for ring-shaped workpieces. It includes a feeding assembly with a hanging shaft for suspending several workpieces; a receiving mechanism is connected to the end of the hanging shaft, and the receiving mechanism has a receiving slot; a single workpiece falls from the hanging shaft into the receiving slot for being picked up by a pick-up clamp, thus having a positioning end connected to the receiving slot and a free end away from the receiving slot; the receiving mechanism and the hanging shaft are hinged along a horizontal axis perpendicular to the length direction of the hanging shaft; a buffer is provided connecting the receiving mechanism and the hanging shaft, the extension and compression of the buffer corresponding to different first and second rotation angles of the receiving slot relative to the pick-up clamp; at the first rotation angle, the free end of the workpiece is inclined towards the pick-up clamp, and the pick-up clamp abuts against the free end during the picking action and drives the receiving slot to swing towards the second rotation angle, and during this process, there is a moment when the workpiece fits into the pick-up clamp.

Description

Technical Field

[0001] This utility model relates to the field of feeding equipment, and in particular to a stable feeding system for ring-shaped workpieces. Background Technology

[0002] Metal graphite spiral wound gaskets are static sealing elements for flange connections of valves, pumps, heat exchangers, towers, manholes, handholes, etc., and are widely used in petrochemical, machinery, power, metallurgy, shipbuilding, pharmaceutical, atomic energy and aerospace industries.

[0003] In the prior art, the feeding method of metal graphite winding pads is generally to suspend multiple pads on a hanging shaft, and push the multiple metal graphite winding pads along the length of the hanging shaft by a pushing mechanism, so that the metal graphite winding pad at the front end falls into the slot at the end of the hanging shaft and is then picked up by the picking device.

[0004] However, the above-mentioned technologies have at least the following technical problems:

[0005] 1. During the period when the metal graphite winding pad falls into the receiving slot, the metal graphite winding pad itself will continuously swing back and forth around the receiving slot, making it difficult for the material handling fixture to stably grip the metal graphite winding pad.

[0006] 2. When the metal graphite winding pad stops swinging and is in a stationary state, there may be jamming between the positioning end and the receiving slot, causing the free end to be located behind the positioning end relative to the material pick-up fixture, which in turn makes the preset stroke of the material pick-up fixture insufficient to pick up the metal graphite winding pad. Utility Model Content

[0007] The purpose of this invention is to provide a stable feeding system for ring-shaped workpieces, so as to solve the problem that the material handling device in the prior art is difficult to achieve stable clamping of ring-shaped workpieces.

[0008] The technical solution of this utility model is: a stable feeding system for ring-shaped workpieces, including a feeding assembly and a picking fixture; wherein, the feeding assembly has a hanging shaft for suspending several workpieces; the end of the hanging shaft is connected to a receiving mechanism, and the receiving mechanism has a receiving slot; a single workpiece falls from the hanging shaft into the receiving slot for being picked up by the picking fixture, and thus has a positioning end connected to the receiving slot and a free end away from the receiving slot;

[0009] The receiving mechanism and the hanging shaft are hinged along a horizontal axis perpendicular to the length of the hanging shaft. A buffer is provided connecting the receiving mechanism and the hanging shaft. The extension and compression of the buffer correspond to different first and second rotation angles of the receiving slot relative to the material pick-up clamp.

[0010] The receiving slot is located at the first turning angle, and the free end of the workpiece is inclined toward the material picker. When the material picker performs the picking action, it abuts against the free end and drives the receiving slot to swing toward the second turning angle. During this process, there is a moment when the workpiece fits into the material picker.

[0011] Preferably, the material handling fixture includes a mating surface and a clamping surface; the mating surface is arranged vertically and can fit against the end face of the workpiece, the clamping surface can abut against the outer wall of the workpiece, and the pair of clamping surfaces gradually converge in the direction away from the mating surface.

[0012] Preferably, the receiving mechanism includes a receiving body, which is embedded in the end of the hanging shaft, and the receiving slot is located on the side of the receiving body away from the hanging shaft; the receiving body is hinged to the hanging shaft, and the extension direction of the buffer does not coincide with the hinge end.

[0013] Preferably, the receiving body is provided with a ramp structure near the top of the receiving slot, the higher part of the ramp structure is connected to the outer wall of the hanging shaft, and the lower part of the ramp structure corresponds to the receiving slot.

[0014] Preferably, a stop mechanism is provided in conjunction with the ramp structure. The stop mechanism includes a stop plate, which has a pair of stop ends arranged vertically on both sides of the receiving body. The end of the stop plate away from the hanging shaft is connected to a stop driver, which drives the pair of stop ends to move in a vertical direction parallel to the receiving body.

[0015] Preferably, a pushing mechanism is provided in conjunction with the hanging shaft. The pushing mechanism includes a pushing sleeve sleeved on the outer wall of the hanging shaft. The pushing sleeve slides along the length direction of the hanging shaft under the drive of the pushing driver.

[0016] Preferably, the buffer is a spring; the receiving body has a receiving groove at one end near the hanging shaft, one end of the spring is installed in the receiving groove, and the other end abuts against the end of the hanging shaft.

[0017] Compared with the prior art, the advantages of this utility model are:

[0018] (1) In this application, the receiving mechanism and the hanging shaft are connected by a hinge shaft and a buffer is provided. When the annular workpiece slides down and hits the receiving slot, the impact energy drives the receiving mechanism to swing. The buffer absorbs the kinetic energy through compression and extension, which significantly shortens the swing time of the workpiece and reduces the amplitude, ensuring that the workpiece stops quickly.

[0019] (2) In this application, after the material handling fixture abuts against the free end of the workpiece, it pushes the receiving mechanism to compress the buffer and deflect it, thereby dynamically adjusting the workpiece to a clamping angle. This eliminates the problem of the free end deflecting backward due to jamming between the positioning end of the annular workpiece and the receiving slot, ensuring that the material handling fixture can clamp the workpiece within its stroke. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0021] Figure 1 This is a first-view structural diagram of a stable feeding system for a ring-shaped workpiece according to the present invention.

[0022] Figure 2 This is a second-view structural diagram of a stable feeding system for a ring-shaped workpiece according to the present invention.

[0023] Figure 3 This is a structural diagram of the material handling fixture described in this utility model;

[0024] Figure 4 for Figure 3 A-direction view;

[0025] Figure 5 This is a structural diagram of the receiving mechanism and buffer component described in this utility model;

[0026] Figure 6 This is a structural diagram of the stop mechanism described in this utility model;

[0027] Figure 7 This is a schematic diagram of the first turning angle of this utility model;

[0028] Figure 8 This is a schematic diagram of the second turning angle of this utility model;

[0029] Among them: 1. Hanging shaft, 2. Picking clamp, 21. Matching surface, 22. Clamping surface, 3. Pushing mechanism, 31. Pushing sleeve, 32. Pushing driver, 4. Receiving mechanism, 41. Receiving slot, 42. Receiving body, 421. Inclined structure, 422. Receiving groove, 5. Buffer, 6. Stopping mechanism, 61. Stop plate, 62. Stopping driver, 100. Ring-shaped workpiece, 110. Positioning end, 120. Free end. Detailed Implementation

[0030] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0031] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0032] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] The annular workpiece described in this application is specifically the inner ring of a metal-graphite wound pad, which is a ring made of metal material. The system described in this application is used for supplying this annular ring.

[0034] The present invention will be further described in detail below with reference to specific embodiments:

[0035] like Figure 1 and Figure 2As shown, a stable feeding system for a ring-shaped workpiece 100 includes a feeding assembly and a material-retrieving fixture 2 configured to cooperate with the feeding assembly. The material-retrieving fixture 2 is connected to a fixture driver and can move toward the feeding assembly. The feeding assembly includes a hanging shaft 1, which is configured as a horizontal rod structure for suspending multiple ring-shaped workpieces 100. The ring-shaped workpieces 100 can slide along the length of the hanging shaft 1. Therefore, to facilitate the positioning and material retrieval by the material-retrieving fixture 2, a receiving mechanism 4 is connected to the end of the hanging shaft 1. The top of the receiving mechanism 4 has a receiving slot 41 in the vertical direction. A single ring-shaped workpiece 100 suspended on the hanging shaft 1 and closest to the receiving mechanism 4 slides off the hanging shaft 1 into the receiving slot 41 in the receiving mechanism 4 under the drive of the pushing mechanism 3, thereby giving the ring-shaped workpiece 100 a defined spatial position, which can then be positioned and clamped by the material-retrieving fixture 2.

[0036] In practical applications, the moment the annular workpiece 100 slides from the hanging shaft 1 into the receiving slot 41, the top end 110 of the annular workpiece 100, which is positioned by the receiving slot 41, will be stopped by the receiving slot 41, while the bottom end 120, which is away from the receiving slot 41, will continue to move forward due to inertia. This will lead to the following problems:

[0037] 1. During the period when the annular workpiece 100 falls into the receiving slot 41, the annular workpiece 100 itself will continuously swing back and forth around the receiving slot 41, which makes it difficult for the material handling fixture 2 to stably clamp the annular workpiece 100.

[0038] Second, when the ring workpiece 100 stops swinging and is in a stationary state, there may be jamming between the positioning end 110 and the receiving slot 41, causing the free end 120 to be located behind the positioning end 110 relative to the material picker 2, which in turn causes the preset stroke of the material picker 2 to be insufficient to pick up the ring workpiece 100.

[0039] To solve the above problems, in this embodiment, we combine... Figure 5 , Figure 7 and Figure 8 As shown, the receiving mechanism 4 is hinged to the hanging shaft 1 along a horizontal axis perpendicular to the length direction of the hanging shaft 1. A buffer 5 is provided between the receiving mechanism 4 and the hanging shaft 1. The compression or extension of the buffer 5 allows the receiving mechanism 4 to swing relative to the hanging shaft 1 along a vertical plane. By compressing and extending itself, the receiving mechanism 4 dissipates the energy of the swing of the annular workpiece 100, increasing the time it takes for the annular workpiece 100 to reach a stationary state or reducing the swing amplitude of the annular workpiece 100, thereby reducing the impact of problem one. Furthermore, the receiving slot 41 has a different first rotation angle and a second rotation angle relative to the picking fixture 2, thereby eliminating the impact of problem two. The specific solution is as follows.

[0040] When the receiving slot 41 is at the first turning angle, the bottom of the receiving slot 41 deflects towards the picking clamp 2, causing the free end 120 of the annular workpiece 100 that has fallen into the receiving slot 41 to tilt towards the picking clamp 2. During the movement of the picking clamp 2 towards the annular workpiece 100, it will abut against the front free end 120 of the annular workpiece 100 and push the free end 120 to compress the buffer 5, causing the annular workpiece 100 to deflect towards the second turning angle. During this deflection process, the annular workpiece 100 will have an angle that allows it to be stably clamped by the picking clamp 2.

[0041] Specifically, such as Figure 3 and Figure 4 As shown, the material handling fixture 2 includes a mating surface 21 and a clamping surface 22. The mating surface 21 is arranged vertically and is used to contact the end face of the annular workpiece 100 near the material handling fixture 2. The clamping surface 22 is used to clamp the outer edge of the annular workpiece 100, and the pair of clamping surfaces 22 gradually converge in the direction away from the mating surface 21, so that the clamped annular workpiece 100 will not come out of the material handling fixture 2 along the horizontal plane.

[0042] like Figure 5 As shown, the receiving mechanism 4 includes a receiving body 42. The end of the hanging shaft 1 has a vertically grooved opening, and the receiving body 42 is embedded within the groove. A receiving slot 41 is located at the top of the receiving body 42 on the side away from the hanging shaft 1. The hinged end has a through hole that passes through both the hanging shaft 1 and the receiving body 42, and a pin is provided in conjunction with the through hole, allowing the receiving slot 41 to swing around the hinged end. A receiving groove 422 is provided on the side wall of the receiving slot 41 near the end of the hanging shaft 1. The depth direction of the receiving groove 422 is opposite to the axial direction of the hinged end and perpendicular to its projection on the same horizontal plane. One end of the buffer member 5 is embedded in the receiving groove 422, and the exposed end abuts against the end of the hanging shaft 1.

[0043] In a preferred embodiment of this application, the buffer 5 is constructed as a spring. In other embodiments of this application, the buffer 5 may also be constructed as a rubber structure or a pair of magnets with mutually repelling polarities in the installed state.

[0044] Furthermore, a ramp structure 421 is provided on the top of the receiving body 42 near the receiving slot 41. The higher part of the ramp structure 421 is connected to the outer wall of the hanging shaft 1, and the lower part of the ramp structure 421 is connected to the receiving slot 41. The annular workpiece 100 on the hanging shaft 1 can slide naturally from the higher part to the lower part after entering the ramp structure 421 under the drive of the pushing mechanism 3, and fall into the receiving slot 41.

[0045] Furthermore, a stop mechanism 6 is provided in conjunction with the ramp structure 421. The stop mechanism 6 is used to retain the annular workpiece 100 entering the ramp structure 421 on the ramp, thereby ensuring that there is at most one annular workpiece 100 in the receiving slot 41. Figure 6 As shown, the stop mechanism 6 includes a stop plate 61, which has a pair of stop ends arranged vertically on both sides of the receiving body 42. The end of the stop plate 61 away from the hanging shaft 1 is connected to a stop driver 62, which drives the pair of stop ends to move vertically parallel to the receiving body 42. When the stop plate 61 descends under the drive of the stop driver 62, the two stop ends abut against the end face of the annular workpiece 100, thereby restricting the movement of the annular workpiece 100 toward the receiving slot 41. In this embodiment, the stop driver 62 is a cylinder.

[0046] The pushing mechanism 3 includes a pushing sleeve 31 sleeved on the outer wall of the hanging shaft 1. The pushing sleeve 31 slides along the length direction of the hanging shaft 1 under the drive of the pushing driver 32. In this embodiment, the pushing driver 32 includes a motor and a lead screw.

[0047] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and therefore, all changes falling within the meaning and scope of the equivalents of the claims are intended to be included within this utility model.

Claims

1. A stable feed system for annular workpieces, characterized in that, It includes a feeding assembly and a material handling fixture (2); wherein the feeding assembly has a hanging shaft (1) for suspending several workpieces; the end of the hanging shaft (1) is connected to a receiving mechanism (4), and the receiving mechanism (4) has a receiving slot (41); a single workpiece falls from the hanging shaft (1) into the receiving slot (41) for the material handling fixture (2) to handle, and thus has a positioning end (110) connected to the receiving slot (41) and a free end (120) away from the receiving slot (41). The receiving mechanism (4) is hinged to the hanging shaft (1) along a horizontal axis perpendicular to the length direction of the hanging shaft (1). A buffer (5) is provided connecting the receiving mechanism (4) and the hanging shaft (1). The extension and compression of the buffer (5) correspond to the first and second rotation angles of the receiving slot (41) relative to the material pick-up clamp (2). At the first turning angle, the free end (120) of the workpiece is inclined toward the material picker (2). When the material picker (2) is in the clamping action, it abuts against the free end (120) and drives the receiving slot (41) to swing toward the second turning angle. During this process, there is a moment when the workpiece fits into the material picker (2).

2. A stabilised feed system for annular workpieces according to claim 1, characterised in that, The material handling fixture (2) includes a mating surface (21) and a clamping surface (22); the mating surface (21) is arranged in the vertical direction and can fit against the end face of the workpiece, the clamping surface (22) can abut against the outer wall of the workpiece, and the pair of clamping surfaces (22) gradually converge in the direction away from the mating surface (21).

3. A stabilised feed system for annular workpieces according to claim 2, characterised in that, The receiving mechanism (4) includes a receiving body (42), which is embedded in the end of the hanging shaft (1). The receiving slot (41) is located on the side of the receiving body (42) away from the hanging shaft (1). The receiving body (42) is hinged to the hanging shaft (1), and the extension direction of the buffer (5) does not coincide with the hinge end.

4. A stabilised feed system for annular workpieces according to claim 3, characterised in that, The receiving body (42) is provided with a ramp structure (421) near the top of the receiving slot (41). The high part of the ramp structure (421) is connected to the outer wall of the hanging shaft (1), and the low part of the ramp structure (421) corresponds to the receiving slot (41).

5. A stabilizing feed system for annular workpieces as defined in claim 3, wherein, A stop mechanism (6) is provided in conjunction with the ramp structure (421). The stop mechanism (6) includes a stop plate (61). The stop plate (61) has a pair of stop ends arranged vertically on both sides of the receiving body (42). The end of the stop plate (61) away from the hanging shaft (1) is connected to the stop driver (62). The stop driver (62) drives the pair of stop ends to move in a vertical direction parallel to the receiving body (42).

6. A stable feeding system for a ring-shaped workpiece according to claim 1, characterized in that, A pushing mechanism (3) is provided in conjunction with the hanging shaft (1). The pushing mechanism (3) includes a pushing sleeve (31) sleeved on the outer wall of the hanging shaft (1). The pushing sleeve (31) slides along the length direction of the hanging shaft (1) under the drive of the pushing driver (32).

7. A stabilizing feed system for annular workpieces as defined in claim 3, wherein, The buffer (5) is a spring; the material receiving body (42) is provided with a containing groove (422) near one end of the material hanging shaft (1), one end of the spring is installed in the containing groove (422), and the other end abuts against the end of the material hanging shaft (1).

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