A valve stem processing equipment

Abstract

A valve stem processing device, relating to the technical field of valve stem processing devices, includes a device body and a top plate. A straight groove is formed on the top surface of the device body along its length. The top plate is mounted on the device body. A feeding platform is slidably arranged within the straight groove. Two limiting plates are slidably arranged on the top surface of the feeding platform along its width. The adjacent ends of the two limiting plates can close together to form a V-shape. Positioning components are provided on the outer sides of the limiting plates along their width. Several positioning plates are equidistantly arranged on the bottom surface of the top plate along its length. Through the coordinated design of a transmission plate, protrusions, and force-bearing blocks, precise adjustment of the distance between the two limiting plates is achieved. Since the adjacent ends of the two limiting plates can form a V-shaped clamping end after closing together, and when the transmission plate moves, it can synchronously drive the two limiting plates to move together, thus changing the distance between the two limiting plates, thereby allowing the V-shaped clamping end to adapt to valve stems of different sizes.

Description

Technical Field

[0001] This invention relates to the field of valve stem processing equipment, and more specifically, to a valve stem processing device. Background Technology

[0002] As the core transmission component of a valve system, the valve stem directly connects the actuator (such as an electric or pneumatic actuator) or manual operating handle to the valve core, achieving valve opening and closing control or flow regulation through its rotation or axial movement. In the valve stem manufacturing process, to ensure a reliable connection between the actuator and the valve stem and to prevent relative rotation during transmission, a pin groove structure must be precisely milled into the outer wall of the valve stem. This pin groove typically engages with the actuator or handle via a locating pin, forming a rigid connection to prevent slippage or loosening due to torque transmission. Currently, the machining of the valve stem pin groove generally involves multiple processes. The specific process is as follows: the worker fixes the cylindrical valve stem to the machine tool using a special fixture, then starts the rotary milling device, causing the milling cutter to slowly move along the valve stem axis to mill the outer surface of the valve stem, forming a pin groove that meets the design requirements.

[0003] Currently, existing valve stems have some shortcomings in processing: on the one hand, the clamping and unloading of valve stems are highly dependent on manual operation. During the actual processing, workers need to repeatedly clamp and fix the valve stems, and after milling, the processed workpieces need to be unloaded. This causes the entire processing flow to be frequently interrupted, resulting in a significant reduction in production efficiency.

[0004] On the other hand, although some equipment can automatically feed valve stems, the applicability of such equipment is severely limited. Specifically, existing automatic feeding systems can only accommodate valve stems of a single size. To address the issue of valve stem misalignment due to inertia or vibration during transport, the equipment often uses a V-shaped raceway structure for support, ensuring stable alignment of the valve stem within the raceway and precise matching with the milling device's machining position. However, the fixed geometry of the V-shaped raceway cannot be adjusted according to the valve stem diameter, resulting in the equipment only being able to handle valve stems of specific sizes. When production demands involve valve stems of different sizes, the machine must be stopped to replace the raceway or adjust equipment parameters, significantly reducing the equipment's versatility and practicality, making it difficult to meet the diverse manufacturing needs of valve stems.

[0005] Based on the above background, the inventors designed a valve stem processing device to solve at least one of the above problems, and hereby submit this application. Summary of the Invention

[0006] The purpose of this invention is to provide a valve stem processing device that can feed and transport valve stems to be processed, and can adapt to valve stems of different sizes during transport, thereby improving the processing efficiency of valve stems.

[0007] This invention is achieved through the following technical solution:

[0008] A valve stem processing device includes a device body and a top plate. The top surface of the device body has a straight groove along its length. The top plate is mounted on the device body. A feeding table is slidably arranged in the straight groove. Two limiting plates are slidably arranged on the top surface of the feeding table along its width. The adjacent ends of the two limiting plates can be closed to form a V-shape. Positioning components are provided on the outer sides of the limiting plates along their width. A plurality of positioning plates are equidistantly arranged on the bottom surface of the top plate along its length. The positioning plates are rectangular. Adjacent positioning plates can be closed to form an accommodating space. The positioning components can extend into the accommodating space.

[0009] The feeding table has an inner cavity, and two moving components are slidably arranged in the inner cavity along the width direction. Each moving component is connected to a corresponding limiting plate. A transmission plate is slidably arranged in the inner cavity along the length direction. The two ends of the transmission plate extend through the outside of the feeding table. The transmission plate can drive the moving components to slide.

[0010] The top plate is also provided with multiple storage boxes of different volumes. Each storage box can accommodate a valve stem of a certain diameter. The bottom surface of the storage box is provided with a discharge port, through which the valve stem can complete the discharge operation.

[0011] The moving component includes a longitudinal groove, a longitudinal block, and a longitudinal sliding plate. The longitudinal groove is distributed along the width direction and is opened on both sides of the inner cavity. The longitudinal block is slidably disposed inside the longitudinal groove. A first spring is provided between the inner outer end of the longitudinal groove and the longitudinal block. The longitudinal sliding plate is disposed above the longitudinal groove along the length direction. The upper end of the longitudinal block is connected to the longitudinal sliding plate. A through groove is opened between the top surface of the feeding table and the inner cavity. The through groove is opposite to the longitudinal groove. A first support block is slidably disposed in the through groove. The upper and lower ends of the first support block are respectively connected to a limiting plate and a longitudinal sliding plate.

[0012] The positioning assembly includes a fixing block, a vertical rod, and a positioning roller. The fixing block is disposed on the outside of the limiting plate. The vertical rod is disposed on the fixing block along the height direction. The upper end of the vertical rod extends into the receiving space. The positioning roller is disposed at the vertical rod. The width of the positioning roller is adapted to the width of the receiving space.

[0013] The transmission plate has a protrusion at the middle of the plate and both the front and rear ends. Multiple inclined ends are provided at equal intervals on the outer ends of the protrusions. A stepped height difference is formed between the multiple inclined ends. A flat end is provided at the distance between two adjacent inclined ends. The inclined ends and the flat end are integrally formed with the protrusions.

[0014] One end of the longitudinal sliding plate is provided with a force-bearing block along the width direction. The force-bearing block corresponds to the transmission plate and the protrusion. The end of the force-bearing block facing the protrusion forms a trapezoidal structure. The inclined surface of the trapezoidal structure is adapted to the inclined end. The left side of the equipment body is provided with a reset block along the bottom surface of the straight groove. The reset block corresponds to the force-bearing block. After the force-bearing block extends and is displaced, it can be returned to its original position with the help of the reset block.

[0015] Multiple feeding slots are equidistantly provided in the top plate along the width direction. Each feeding slot corresponds to a storage box. The discharge port is connected to the feeding slot. A piston pusher is slidably provided on the right side inside the feeding slot. A discharge port is provided on the left side inside the feeding slot. The discharge port is connected to the bottom surface of the top plate. The discharge port corresponds to the adjacent ends of the two limiting plates.

[0016] An air guide pipe is provided between the inside right side of the feeding trough and the outside of the top plate. The air guide pipe can fill or draw air into the inside right side of the feeding trough. The piston pusher can use the gas to push the valve rod in the feeding trough to the discharge port.

[0017] Furthermore, an installation groove is provided on the right side of the device body along the width direction. A lifting plate is slidably arranged in the installation groove along the height direction. A third spring is provided between the bottom surface of the lifting plate and the installation groove. Several slots are equidistantly arranged in the width direction between the top surface of the installation groove and the straight groove. Each slot is arranged along the same straight line. A pressure block is slidably arranged in each slot. The height of each pressure block increases sequentially from the inside to the outside. The bottom surface of each pressure block is connected to the lifting plate.

[0018] Furthermore, a rectangular clearance groove is provided on the bottom surface of the feeding platform along the length direction. The clearance groove corresponds to all the pressure blocks. A rectangular pressure plate is slidably arranged in the clearance groove along the width direction. The inner top surface of the clearance groove is connected to the longitudinal groove. A second support block is provided between the bottom surface of the longitudinal block and the top surface of the pressure plate. The longitudinal block can drive the pressure plate to move. The movement path of the pressure plate intersects with the arrangement path of several pressure blocks, so that the pressure plate can selectively align with one of the pressure blocks. Both ends of the pressure plate and the pressure block are provided with mutually adaptable inclined surfaces.

[0019] Furthermore, the top right side of the feeding platform is provided with a planar stepped section, and the stepped section is integrally formed with the feeding platform. The two limiting plates are slidably installed on the top surface of the stepped section, and a vertical height difference is formed between the top surface of the stepped section and the inner left side of the feeding platform.

[0020] A horizontal groove is formed along the length of the left side of the feeding platform, with the ends of the groove extending beyond the platform. The horizontal groove corresponds to the inner central axis of the two limiting plates. A push rod is slidably disposed within the horizontal groove, with one end of the push rod extending from the left side of the feeding platform. A connecting block is provided at the left end of the push rod. A second spring is sleeved on the left side of the outer wall of the push rod, with the ends of the second spring connected to the connecting block and the feeding platform, respectively. The second spring can push the feeding platform to move. A rectangular moving groove is formed along the length of the horizontal groove, with a push block slidably disposed on the left side of the moving groove. One end of the push block is also connected to the push rod, and the push rod can drive the push block to slide within the moving groove.

[0021] Furthermore, a driving mechanism is provided inside the straight groove. The driving mechanism includes a guide groove, a lead screw, and a threaded block. The guide groove is opened along the length direction on the rear side of the inner wall of the straight groove. The lead screw is rotatably disposed in the guide groove along the length direction. The threaded block is disposed in the guide groove and is threadedly connected to the lead screw. The lead screw can drive the threaded block to move. A second bracket is provided on the top of the threaded block. One end of the second bracket is connected to a connecting block. A motor is provided on the outside of the device body. The motor can drive the lead screw to rotate.

[0022] The feeding platform has a movable groove on the left side along the width direction. The movable groove is connected to the movable groove on the right side. A movable block is slidably arranged in the movable groove along the height direction. The height of the movable block is less than the internal height of the movable groove. When the pushing block slides to the right side of the movable groove, the top surface of the pushing block can push the movable block to move upward. The opposite ends of the pushing block and the movable block are provided with mutually adaptable inclined surfaces.

[0023] Furthermore, a mounting base is provided on the right side of the device body. The mounting base is integrally formed with the device body. The mounting base has a receiving cavity that communicates with the straight groove. The internal height of the receiving cavity is greater than the height of the straight groove. An opening is provided between the right side of the mounting base and the receiving cavity. The positioning plate is separated from the receiving cavity.

[0024] The inner wall of the receiving cavity is provided with side grooves on both sides. A clamping plate is slidably provided above the side grooves along the height direction. The clamping plate is separated from the feeding table. The bottom surface of the clamping plate is provided with an inverted V-shaped clamping groove. The clamping groove corresponds to the adjacent ends of the two limiting plates. The inner wall surface of the clamping groove is also provided with a friction block, which is made of rubber material.

[0025] Furthermore, the mounting groove is interconnected with the side groove, the two ends of the lifting plate extend into the side groove, and the top surface of the lifting plate is provided with first supports on both sides, one end of the first support being connected to the clamping plate.

[0026] The upper end of the inner wall of the straight groove is provided with a first sliding groove along the length direction. One end of the movable block extends into the first sliding groove. A second sliding groove is provided on the right side of the first sliding groove along the length direction. The second sliding groove is connected to the first sliding groove. The second sliding groove is located above the first sliding groove. The internal height of the first sliding groove is greater than the height of the movable block.

[0027] When the movable block moves within the first slide groove, the second slide groove can limit the movable block by means of the groove wall;

[0028] When the pusher block pushes the movable block upward, the second slide can align with the movable block.

[0029] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0030] 1. The valve stem processing equipment of the present invention achieves precise adjustment of the distance between two limiting plates through the coordinated design of the transmission plate, the protrusion and the force-bearing block. Specifically, since the adjacent ends of the two limiting plates can form a V-shaped clamping end after being closed, and when the transmission plate moves, it can drive the two limiting plates to move together synchronously, thus changing the distance between the two limiting plates, so that the V-shaped clamping end can be adapted to valve stems of different sizes. This design breaks through the problem that the traditional fixed-size V-shaped raceway can only be adapted to a single specification of valve stem, thereby improving the versatility of the equipment.

[0031] 2. The valve stem processing equipment of the present invention, by arranging multiple positioning plates at intervals above the straight groove, allows adjacent positioning plates to form a guide channel arranged in a straight line. This can forcibly limit the movement path of the limiting plate. Specifically, when the feeding table slides along the straight groove, the uprights and positioning rollers on the outside of the limiting plate will be precisely embedded in the guide channel and slide along it. This can effectively avoid the longitudinal displacement problem of the limiting plate when conveying the valve stem, thereby ensuring that the valve stem can maintain a stable centering state throughout the conveying process, thus providing a reliable guarantee for subsequent processing and positioning.

[0032] 3. The valve stem processing equipment of the present invention achieves precise positioning and locking of the feeding table through the coordinated design of the movable block, the first slide groove and the second slide groove. After the feeding table is locked, the connecting block can continuously apply a pushing force to the push rod, so that the push rod can be smoothly extended from the horizontal groove. After extension, it can push the valve stem to move precisely to the preset processing position. This "lock first, then push" method not only ensures the high efficiency of the valve stem in the conveying process, but also achieves precise axial positioning of the workpiece at the processing point, thereby providing stable and reliable execution conditions for subsequent automated milling operations.

[0033] 4. The valve stem processing equipment of the present invention achieves multi-dimensional constraint on the valve stem through the coordinated design of a limiting plate, a push rod, a clamping plate, and a clamping groove. Specifically, the inverted V-shaped clamping groove of the clamping plate can apply a vertical clamping force to the valve stem from above, the V-shaped clamping end formed by the adjacent ends of the limiting plate after closing can stably support the valve stem from below, the push rod can apply a continuous pushing force to the valve stem along the axial direction, and at the same time, the milling cutter can apply a reaction force to the valve stem during milling. These four components together construct a stable and coordinated force system. Under the comprehensive action of this force system, it can ensure that the valve stem maintains a stable positioning state in the radial, axial, and circumferential dimensions during the milling process. In this way, it can effectively avoid problems such as shaking and displacement during the processing, thereby providing stability and reliability for the processing of the valve stem. Attached Figure Description

[0034] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0035] Figure 1 This is an overall structural diagram of a valve stem processing device according to the present invention.

[0036] Figure 2 This is an internal structural diagram of a valve stem processing device according to the present invention.

[0037] Figure 3 This is a structural diagram of the feeding platform and straight groove of the present invention.

[0038] Figure 4 This is an internal cross-sectional view of a valve stem processing device according to the present invention.

[0039] Figure 5 This is an internal cross-sectional view of the feeding table of the present invention along its length.

[0040] Figure 6 This is a cross-sectional installation view of the top plate and the storage box of the present invention.

[0041] Figure 7 This is an internal cross-sectional view of the feeding table of the present invention along the width direction.

[0042] Figure 8 This is a structural diagram of the installation of the inner cavity and the transmission plate of the present invention.

[0043] Figure 9 This is a structural diagram showing the connection between the movable block and the slide groove of the present invention.

[0044] Figure 10 This is a schematic diagram of the contact between the pressure plate and the pressure block of the present invention.

[0045] Figure 11This is a comparison diagram showing the movement of the positioning roller along the positioning plate according to the present invention.

[0046] The attached diagram shows the markings and corresponding component names:

[0047] 1-Equipment body; 11-Straight groove; 12-First slide groove; 13-Second slide groove; 14-Reset block;

[0048] 2-Feeding platform; 21-Step section; 22-Limiting plate; 23-Fixing block; 24-Upright pole; 25-Positioning roller; 26-Inner cavity; 27-Transmission plate; 271-Protrusion; 272-Inclined end; 273-Flat end; 28-Longitudinal groove; 281-Longitudinal block; 282-First spring; 283-Longitudinal sliding plate; 284-Force-bearing block; 285-Through groove; 286-First support block; 29-Allowing groove; 291-Pressure plate; 292-Second support block;

[0049] 3-Top plate; 31-Storage bin; 32-Discharge port; 33-Feeding chute; 34-Piston pusher; 35-Air guide pipe; 36-Discharge port; 37-Positioning plate;

[0050] 4-Horizontal groove; 41-Push rod; 42-Second spring; 43-Push block; 44-Moving groove; 45-Connecting block;

[0051] 46 - Movable slot; 47 - Movable block;

[0052] 5-Mounting base; 51-Receiving cavity; 52-Opening; 53-Side groove; 54-Clamping plate; 541-Clamping groove; 542-Friction block; 543-First bracket; 55-Mounting groove; 56-Lifting plate; 57-Third spring; 58-Slot; 59-Pressure block;

[0053] 6-Drive mechanism; 61-Guide groove; 62-Screw; 63-Threaded block; 64-Motor; 65-Second bracket. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0055] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0056] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0057] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0058] Furthermore, the terms "parallel" and "perpendicular" do not imply that components must be absolutely parallel or perpendicular, but rather that they can be slightly tilted. For example, "parallel" simply means that its direction is more parallel than "perpendicular," not that the structure must be perfectly parallel, but that it can be slightly tilted.

[0059] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0060] Example 1

[0061] As attached Figure 1 To be continued Figure 11 As shown: A valve stem processing device includes a device body 1, a top plate 3, and a mounting base 5. The top surface of the device body 1 has a straight groove 11 along the length direction. The top plate 3 is set on the device body 1, and the mounting base 5 is set on the right side of the device body 1. The top plate 3 and the mounting base 5 are integrally formed with the device body 1. A feeding platform 2 is slidably provided in the straight groove 11. Two trapezoidal limiting plates 22 are slidably provided on the top surface of the feeding platform 2 along the width direction. The adjacent ends of the two limiting plates 22 can form a V-shape after being closed. The feeding platform 2 has an inner cavity 26. A rectangular transmission plate 27 is slidably provided in the middle of the inner cavity 26 along the width direction. The ends of the transmission plate 27 extend through the left and right sides of the feeding platform 2. Two moving components are slidably provided in the inner cavity 26 along the width direction. The two moving components are respectively arranged at the front end and the rear end of the inner cavity 26. Each moving component is connected to the corresponding limiting plate 22. Both moving components are linked with the transmission plate 27, and the transmission plate 27 can trigger the action of the two moving components.

[0062] The top plate 3 is provided with at least three storage boxes 31 of different volumes. Each storage box 31 is used to store valve stems of different diameters, that is, each storage box 31 can only hold one type of valve stem. The bottom surface of each storage box 31 is provided with a discharge port 32, which is adapted to fit the valve stem inside the storage box 31, so that the valve stem inside the storage box 31 can be discharged through the discharge port 32.

[0063] The mounting base 5 has a receiving cavity 51 that communicates with the straight groove 11. The internal height of the receiving cavity 51 is greater than the height of the straight groove 11. An opening 52 is provided on the right side of the mounting base 5 to communicate with the receiving cavity 51.

[0064] In the above structure, when the feeding table 2 slides left and right in the straight groove 11, since the transmission plate 27 protrudes from the outside of the feeding table 2, when the feeding table 2 continues to slide into the mounting base 5, the transmission plate 27 will first contact the inner wall surface of the receiving cavity 51. During the contact, a pushing force can be applied to the transmission plate 27. Through the pushing force, the transmission plate 27 can be moved away from the mounting base 5. When the transmission plate 27 is moving, it can drive the two moving components to move together. This allows the two moving components to drive the two limiting plates 22 to slide together in the width direction. While sliding, the distance between the two limiting plates 22 can be adjusted. After the distance is increased, it can be adapted to valve stems of different sizes.

[0065] On the other hand, since the two limiting plates 22 are trapezoidal and the adjacent ends of the two limiting plates 22 can form a V-shaped clamping end after being closed, the width of the V-shaped clamping end formed by the two limiting plates 22 will also change when the two limiting plates 22 are in motion. In this way, when the valve stem is placed on the clamping end, it can be adapted to valve stems of different sizes, thus completing the conveying work of different valve stems.

[0066] Specifically, such as Figure 1 and Figure 6 As shown, multiple feeding grooves 33 are equidistantly arranged along the width direction inside the top plate 3. Each feeding groove 33 corresponds to each storage box 31. The discharge port 32 is connected to the feeding groove 33. A discharge port 36 is opened on the left side inside the feeding groove 33. The discharge port 36 is connected to the bottom surface of the top plate 3 and corresponds to the adjacent ends of the two limiting plates 22. This allows the valve stem to fall onto the V-shaped clamping ends of the two limiting plates 22 via the feeding groove 33 and the discharge port 36.

[0067] A piston pusher 34 is slidably installed on the right side of the inside of the feeding trough 33. A vent pipe 35 is also connected between the right side of the inside of the feeding trough 33 and the outside of the top plate 3. The vent pipe 35 can charge or draw air into the right side of the inside of the feeding trough 33. This allows the gas in the vent pipe 35 to push the piston pusher 34 to move left and right. During the movement, it can block the falling valve rod and push the valve rod in the feeding trough 33 to the discharge port 36.

[0068] The height of the feeding groove 33 is matched with the height of the valve stem. This design allows for precise feeding using the inner height of the feeding groove 33, and prevents jamming when pushing the valve stem.

[0069] like Figure 3 , Figure 7 and Figure 8 As shown, the moving assembly includes a longitudinal groove 28, a longitudinal block 281, and a longitudinal slide plate 283. The longitudinal groove 28 is distributed along the width direction and is opened on both sides of the inner cavity 26. The longitudinal block 281 is slidably disposed inside the longitudinal groove 28. A first spring 282 is disposed between the inner outer end of the longitudinal groove 28 and the longitudinal block 281. The longitudinal slide plate 283 is disposed above the longitudinal groove 28 along the length direction. The upper end of the longitudinal block 281 is connected to the longitudinal slide plate 283. A through groove 285 is opened between the top surface of the feeding table 2 and the inner cavity 26. The through groove 285 is opposite to the longitudinal groove 28. A first support block 286 is slidably disposed in the through groove 285. The upper and lower ends of the first support block 286 are respectively connected to the limiting plate 22 and the longitudinal slide plate 283. This allows the longitudinal slide plate 283 to drive the longitudinal block 281 and the limiting plate 22 to slide outward together after being subjected to force, and after sliding, it can be reset by the elastic force of the first spring 282.

[0070] The transmission plate 27 has protrusions 271 at both the front and rear ends along its middle. Multiple inclined ends 272 are equidistantly arranged on the outer ends of the protrusions 271, forming a stepped height difference between them. A flat end 273 is provided at the distance between adjacent inclined ends 272. The inclined ends 272 and flat ends 273 are integrally formed with the protrusions 271. This allows the inclined ends 272 and flat ends 273 to be distributed in a stepped manner on the outer surface of the protrusions 271.

[0071] One end of the longitudinal sliding plate 283 is provided with a strip-shaped force-bearing block 284 along the width direction. The force-bearing block 284 corresponds to the transmission plate 27 and the protrusion 271. The end of the force-bearing block 284 facing the protrusion 271 forms a trapezoidal structure. The inclined surface of the trapezoidal structure is adapted to the inclined end 272. This allows the protrusion 271 to apply a pushing force to the force-bearing block 284 after it comes into contact with it.

[0072] In the above structure, when the transmission plate 27 drives the protrusion 271 to slide, the inclined surface of the protrusion 271 can contact the force block 284. Since there are multiple inclined surfaces and there is a height difference between adjacent inclined surfaces, when the force block 284 contacts it, it can push the force block 284 to slide a different distance, so that the position adjustment of the longitudinal slide plate 283 by the transmission plate 27 can be realized.

[0073] On the other hand, since there is also a flat end 273 between adjacent inclined surfaces, and the contact end of the force-bearing block 284 (the contact end with the protrusion 271) is a trapezoidal structure, and existing trapezoids all have inclined and horizontal surfaces, when the protruding inclined end 272 contacts the inclined surface of the force-bearing block 284, the inclined surface can guide the force-bearing block 284 to move. After the displacement, the protruding horizontal end will contact the horizontal surface of the force-bearing block 284. If the feeding table 2 remains stationary at this time, the transmission plate 27 will stop in the inner cavity 26. Then, with the help of the elastic force of the first spring 282, the force-bearing block 284 can reverse and hold the transmission plate 27 against it. With this cooperation, the force-bearing block 284 can achieve a locking function after sliding by means of the horizontal surface of the protrusion 271 and the first spring 282. This avoids the situation where the limiting plate 22 resets and springs back after the action.

[0074] Specifically, such as Figure 2 and Figure 3 As shown, a reset block 14 is provided on the bottom surface of the straight groove 11 on the left side of the equipment body 1, and the reset block 14 corresponds to the force-bearing block 284. When the feeding table 2 drives the force-bearing block 284 to move to the right, the receiving cavity 51 will push the transmission plate 27 to move, so that one end of the transmission plate 27 can pass through the left side of the feeding table 2. Then, when the feeding table 2 resets to the left, the outwardly extending transmission plate 27 can contact the reset block 14, so as to push the outwardly extending transmission plate 27 to reset. After reset, the locking of the force-bearing block 284 can be released.

[0075] Specifically, such as Figure 6 , Figure 7 and Figure 11 As shown, several rectangular positioning plates 37 are equidistantly arranged on the front and rear sides of the bottom surface of the top plate 3. The positioning plates 37 are opened along the length direction, and adjacent positioning plates 37 can be enclosed to form an accommodating space. The positioning plates 37 are separated from the accommodating cavity 51.

[0076] Both limiting plates 22 have fixing blocks 23 on their outer sides along the width direction. The top surface of the fixing blocks 23 has a vertical rod 24 along the height direction. The vertical rod 24 is opposite to the accommodating space, and the upper end of the vertical rod 24 extends into the accommodating space. The outer side of the vertical rod 24 is provided with a positioning roller 25, and the width of the positioning roller 25 is adapted to the width of the accommodating space.

[0077] In the above structure, multiple positioning plates 37 can be arranged at intervals along the length of the straight groove 11 above the groove. These positioning plates 37 then form several rectangular receiving spaces. When the feeding platform 2 drives the column to slide within the straight groove 11, the upper end of the column can move within the receiving space. Furthermore, when the column moves into the mounting base 5, it can separate from the receiving space. This mechanism ensures that the column can only move in a straight line when sliding within the receiving space, thus determining the movement trajectory of the limiting plate 22. Since the limiting plate 22 cannot move left or right, it can stably support and transport the valve stem. Based on this, different valve stem sizes can be accommodated when the column 24 enters different receiving spaces.

[0078] Secondly, once the upright rod 24 enters the mounting base 5, it can separate from the receiving space. This facilitates the transmission plate 27 to push the limiting plate 22 in the width direction. After movement, the upright rod 24 can enter different receiving spaces, thus adapting to valve stems of different sizes. Furthermore, since the positioning roller 25 is adapted to the width of the receiving space, excessive gaps are avoided when the positioning roller 25 slides within the receiving space, ensuring the support stability of the limiting plate 22.

[0079] Example 2

[0080] To facilitate unloading of the valve stem, such as Figure 3 , Figure 5 , Figure 7 As shown, a planar stepped section 21 is provided on the right side of the top surface of the feeding platform 2, and the stepped section 21 is integrally formed with the feeding platform 2. Two limiting plates 22 are slidably installed on the top surface of the stepped section 21, and a vertical height difference is formed between the top surface of the stepped section 21 and the inner left side of the feeding platform 2.

[0081] A horizontal groove 4 is formed along the length of the left side of the feeding platform 2, and the ends of the horizontal groove 4 extend out of the feeding platform 2. The horizontal groove 4 corresponds to the inner central axis of the two limiting plates 22. A push rod 41 is slidably arranged in the horizontal groove 4, and one end of the push rod 41 extends out from the left side of the feeding platform 2. A connecting block 45 is provided at the left end of the push rod 41. A second spring 42 is sleeved on the left side of the outer wall of the push rod 41, and the ends of the second spring 42 are connected to the connecting block 45 and the feeding platform 2 respectively. The second spring 42 can push the feeding platform 2 to move. A rectangular moving groove 44 is formed along the length of the horizontal groove 4. A push block 43 is slidably arranged on the left side of the moving groove 44. One end of the push block 43 is also connected to the push rod 41. The push rod 41 can drive the push block 43 to slide in the moving groove 44.

[0082] In the above structure, the design of the stepped section 21 allows the top surface of the feeding table 2 to form a "left-high, right-low" structural feature. Since the limiting plate 22 is located on the right side of the feeding table 2 (i.e., on the stepped section 21), and the horizontal groove 4 and push rod 41 are located on the left side of the feeding table 2, when the push rod 41 is pushed by an external force, it can be pushed out from the right side of the horizontal groove 4. Since the horizontal groove 4 corresponds to the inner central axis of the two limiting plates 22, when the push rod 41 is pushed out, it can push the valve rod on the clamping end. This allows one end of the valve rod to be pushed out from the inner side of the limiting plate 22 to the opening 52. Then the valve rod is slowly pushed out to the outside, allowing the external milling equipment to process the valve rod.

[0083] On the other hand, since the push rod 41 and the feeding table 2 are connected by an elastic connection, that is, the transmission is achieved through the second spring 42, when the feeding table 2 is not obstructed, the connecting block 45 can normally push the feeding table 2 to move through the second spring 42. When the feeding table 2 is obstructed by the outside, if the connecting block 45 continues to apply a pushing force to the push rod 41, the push rod 41 will continue to move to the right, and the second spring 42 will be compressed. This design allows the push rod 41 to continue moving a certain distance with the help of the second spring 42 after the feeding table 2 stops. In addition, when the push rod 41 moves, it can drive the push block 43 to slide in the moving groove 44.

[0084] Specifically, such as 2 and Figure 3 As shown, a drive mechanism 6 is provided in the straight groove 11. The drive mechanism 6 includes a guide groove 61, a lead screw 62, and a threaded block 63. The guide groove 61 is opened along the length direction on the rear side of the inner wall of the straight groove 11. The lead screw 62 is rotatably disposed in the guide groove 61 along the length direction. The threaded block 63 is disposed in the guide groove 61 and is threadedly connected to the lead screw 62. The lead screw 62 can drive the threaded block 63 to move. A second bracket 65 is provided on the top of the threaded block 63. One end of the second bracket 65 is connected to the connecting block 45. A motor 64 for rotating the lead screw 62 is provided on the outside of the equipment body 1. The reset block 14 is separated from the second bracket 65.

[0085] In the above structure, the motor 64 can drive the lead screw 62 to rotate. After the lead screw 62 rotates, it can drive the threaded block 63 and the second bracket 65 to move. This allows the second bracket 65 to drive the connecting block 45 and the push rod 41 to slide, thereby realizing the movement function of the feeding table 2. Secondly, the spacing design between the second bracket 65 and the reset block 14 ensures that the feeding table 2 is not obstructed by the reset block 14 during reset, thus ensuring stability during sliding.

[0086] like Figures 4 to 5 and Figure 9As shown, a movable groove 46 is provided on the left side of the feed table 2 along the width direction. The right side of the movable groove 44 is connected to the movable groove 46. A movable block 47 is slidably disposed in the movable groove 46 along the height direction. The height of the movable block 47 is less than the internal height of the movable groove 46. When the push block 43 slides to the right side of the movable groove 44, the top surface of the push block 43 can push the movable block 47 upward. The opposite ends of the push block 43 and the movable block 47 are provided with mutually adaptable inclined surfaces. This allows the push block 43 to contact the movable block 47 through its top surface when it moves to the right side of the movable groove 44, and after contact, the push block 43 can push the movable block 47 upward.

[0087] A first sliding groove 12 is formed along the length direction at the upper end of the inner wall of the straight groove 11. One end of the movable block 47 extends into the first sliding groove 12. A second sliding groove 13 is formed along the length direction on the right side of the first sliding groove 12. The second sliding groove 13 is connected to the first sliding groove 12. The second sliding groove 13 is located above the first sliding groove 12. The internal height of the first sliding groove 12 is greater than the height of the movable block 47.

[0088] In the above structure, a height difference can be formed at the connection between the first slide groove 12 and the second slide groove 13. When the movable block 47 moves to this connection, it can be stopped by the height difference. When the movable block 47 is stopped, the feeding table 2 cannot move further, thus achieving the limiting and locking of the feeding table 2. When the connecting block 45 continuously applies a pushing force to the push rod 41, the push rod 41 will continue to move to the right, which can push the valve stem out of the opening 52, facilitating subsequent milling.

[0089] After processing is completed, the connecting block 45 continues to push the push rod 41 to the right. At this time, the top surface of the push block 43 can contact the movable block 47. After contact, the push block 43 can push the movable block 47 upward. At this time, the second slide 13 can be opposite to the movable block 47, which can lock the feeding table 2. Then the connecting block 45 can push the feeding table 2 to continue to move, so that the transmission plate 27 can gradually contact the inner wall of the receiving cavity 51. Based on this, by controlling the displacement distance of the transmission plate 27, the width between the two limit plates 22 can be adjusted in linkage. In this way, it can adapt to valve stems of different sizes in the next transport.

[0090] Specifically, such as Figure 3 , Figure 9 and Figure 11 As shown, when the movable block 47 moves to the connection between the first slide 12 and the second slide 13, the feeding table 2 is just able to be blocked by the connection.

[0091] When the feeding table 2 is locked, the connecting block 45 can continuously apply pressure to the push rod 41. At this time, the second spring 42 will be compressed, and the push rod 41 will pass through the horizontal groove 4. When the elastic force of the second spring 42 is compressed to the first preset level (corresponding to the second spring 42 being compressed to one-third of its stroke), the push rod 41 can push the valve rod into the opening 52.

[0092] When the elastic force of the second spring 42 is compressed to the second preset level (corresponding to the second spring 42 being compressed to two-thirds of its stroke), the positioning roller 25 can separate from the positioning plate 37, one end of the valve stem can pass through the opening 52, and the push block 43 just contacts the movable block 47.

[0093] When the connecting block 45 continues to compress the second spring 42, the pushing block 43 can push the movable block 47 to move upward. At this time, the movable block 47 can be opposite to the second slide 13, so that the connecting block 45 can continue to push the feeding table 2 to move. After moving, the transmission plate 27 can abut against the receiving cavity 51. Due to the continuous movement of the feeding table 2, the transmission plate 27 can move away from the receiving cavity 51. This allows the transmission plate 27 to drive the force-bearing block 284 to move in linkage, thereby realizing the position adjustment of the limiting plate 22.

[0094] Example 3

[0095] To ensure the stability of the valve stem during processing, such as Figure 3 , Figure 4 , Figure 7 and Figure 10 As shown, an installation groove 55 is provided on the right side of the device body 1 along the width direction. A lifting plate 56 is slidably arranged in the installation groove 55 along the height direction. A third spring 57 is provided between the bottom surface of the lifting plate 56 and the installation groove 55. Several slots 58 are equidistantly arranged in the width direction between the top surface of the installation groove 55 and the straight groove 11. Each slot 58 is arranged along the same straight line. A pressure block 59 is slidably arranged in each slot 58. The height of each pressure block 59 increases sequentially from the inside to the outside. The bottom surface of each pressure block 59 is connected to the lifting plate 56. This allows the pressure block 59 to drive the lifting plate 56 to move downward after being pressed. Furthermore, because the height of each pressure block 59 is different, the downward displacement distance of the lifting plate 56 is also different after being pressed. This allows for adjustment of the clamping effect on valve stems of different sizes.

[0096] The inner wall of the receiving cavity 51 is provided with side grooves 53 on both sides. A clamping plate 54 is slidably provided above the side grooves 53 along the height direction. The clamping plate 54 is separated from the feeding table 2. The bottom surface of the clamping plate 54 is provided with an inverted V-shaped clamping groove 541, which corresponds to the adjacent ends of the two limiting plates 22. The inner wall surface of the clamping groove 541 is also provided with a friction block 542, which is made of rubber material. At the same time, it is connected to the side grooves 53 in the mounting groove 55. The ends of the lifting plate 56 extend into the side grooves 53 on both sides. The top surface of the lifting plate 56 is provided with a first bracket 543 on both sides. One end of the first bracket 543 is connected to the clamping plate 54, so that the lifting plate 56 can drive the clamping plate 54 to move downward.

[0097] In the above structure, when the pressure block 59 is pressed, it can push the lifting plate 56 to move downward, which allows the clamping plate 54 to move the inverted V-shaped clamping groove 541 downward. During continuous movement, the V-shaped clamping groove 541 at the clamping plate 54 can contact the upper surface of the valve stem. In this process, through the synergistic effect of the inverted V-shaped clamping groove 541, the V-shaped clamping end (formed by the adjacent ends of the two limiting plates 22), the pushing force applied by the push rod 41, and the milling process (the force applied when the milling cutter contacts the valve stem workpiece), it is possible to prevent the other end of the valve stem from tilting up when the clamping plate 54 is pressed. This ensures that the valve stem can maintain a stable fixed state in the radial, axial, and circumferential directions during the milling process. In addition, the friction block 542 is provided so that when the push rod 41 pushes the valve stem into the clamping groove 541, the outer surface of the valve stem can contact the friction block 542, which can increase the friction with the valve stem. Through the friction, the valve stem can be prevented from shifting position due to axial movement during processing.

[0098] On the other hand, because there are differences in height between the multiple pressure blocks 59, the moving distance of the lifting plate 56 is also different when different pressure blocks 59 are pressed. This can drive the clamping plate 54 to move together, so as to adapt to valve stems of different sizes and thus provide stable friction for different valve stems.

[0099] Specifically, a rectangular clearance groove 29 is provided on the bottom surface of the feeding table 2 along the length direction. The clearance groove 29 corresponds to all the pressure blocks 59. A rectangular pressure plate 291 is slidably arranged in the clearance groove 29 along the width direction. The inner top surface of the clearance groove 29 is connected to the longitudinal groove 28. A second support block 292 is provided between the bottom surface of the longitudinal block 281 and the top surface of the pressure plate 291. The longitudinal block 281 can drive the pressure plate 291 to move. The moving path of the pressure plate 291 intersects with the arrangement path of several pressure blocks 59, so that the pressure plate 291 can selectively align with one of the pressure blocks 59. The ends of the pressure plate 291 and the pressure block 59 are provided with mutually compatible inclined surfaces.

[0100] In the above structure, the design of the clearance groove 29 allows multiple pressure blocks 59 to enter the clearance groove 29 when the feeding table 2 slides in the straight groove 11, thus avoiding obstruction of the feeding table 2 during sliding. Secondly, the design of the pressure plate 291 requires that the width between the two limit plates 22 be adjusted in advance by the transmission plate 27 before the limit plate 22 needs to support valve stems of different sizes. When the limit plate 22 moves, it will also drive the pressure plate 291 to move, thus allowing the pressure plate 291 to be displaced. After displacement, the pressure plate 291 is aligned with the pressure block 59 that matches the valve stem.

[0101] Subsequently, the feeding platform 2 drives the limiting plate 22 to slide to the left, allowing the adjusted limiting plate 22 to reach the corresponding storage box 31. Then, the valve stem, which matches the position of the pressure block 59, falls onto the limiting plate 22 for transmission. During the transmission process, the previously displaced pressure plate 291 contacts and presses against the corresponding pressure block 59, thus adjusting the clamping plate 54 to a suitable height. When one end of the valve stem is pushed into the clamping groove 541, the pressure applied by the clamping plate 54 is just right to match the valve stem of that size, thus applying sufficient friction to different valve stems, thereby ensuring the stability of the valve stem in subsequent processing.

[0102] Specifically, when the pressure plate 291 contacts the pressure block 59, the connection between the first slide groove 12 and the second slide groove 13 can lock the feeding table 2. At the same time, the connecting block 45 is ready to compress the second spring 42. This design can control the movement sequence of the push rod 41 and the feeding table 2.

[0103] Working principle:

[0104] Preparation stage: First, valve stems of different sizes are installed in three storage boxes 31 of different volumes, and each storage box 31 contains a valve stem of a single specification.

[0105] Adjustment stage: The start motor 64 drives the lead screw 62 to rotate. The threaded block 63 on the lead screw 62 can push the push rod 41 and the feeding table 2 to the right side of the straight groove 11. Then, the moving distance of the feeding table 2 is controlled according to the processing requirements. After the valve stem size is determined, the feeding table 2 is allowed to move continuously. When the transmission plate 27 moves, the protrusions 271 (inclined end 272 and flat end 273) on it contact the force-bearing block 284 of the moving component. The displacement distance of the force-bearing block 284 can be controlled by different inclined ends 272, thus controlling the width between the two limiting plates 22. This achieves the distance adjustment between the limiting plates 22, so that the V-shaped clamping end formed by the inner sides of the two limiting plates 22 after being closed can adapt to valve stems of different sizes.

[0106] During the feeding stage: After the two limit plates 22 are adjusted, the motor 64 drives the lead screw 62 to reverse. At this time, the threaded block 63 can drive the feeding table 2 to slide to the left. After sliding, the upright 24 and the positioning roller 25 can enter the receiving space formed by the adjacent positioning plates 37, thus determining the movement track of the limit plates 22. When the feeding table 2 moves to the appropriate storage box 31, the external inflation device inflates the inside right side of the feeding trough 33, pushing the piston pusher 34 to move. During the movement, the valve stem at this position can be accurately pushed to the V-shaped clamping end formed by the two limit plates 22 through the feeding trough 33 and the discharge port 36.

[0107] Conveying stage: After the material is fed, the lead screw 62 drives the threaded block 63 to move to the right. During the movement, the movable block 47 will move in the first slide groove 12. Since there is a height difference at the connection between the first slide groove 12 and the second slide groove 13, when the movable block 47 moves to the connection, it can be stopped by the height difference. When the movable block 47 is stopped, the feeding table 2 cannot move further. In this way, the feeding table 2 can be limited and locked.

[0108] After the feeding table 2 is locked, the connecting block 45 continues to apply pressure to the push rod 41. At this time, the second spring 42 will be compressed, and the push rod 41 will pass through the horizontal groove 4. When the elastic force of the second spring 42 is compressed to a preset level, the push rod 41 can push the valve stem to be processed to move. After moving, one end of it can enter the clamping groove 541 of the clamping plate 54, so that the displaced valve stem can contact the friction block 542. In this process, through the synergistic effect of the inverted V-shaped clamping groove 541, the V-shaped clamping end (formed by the adjacent ends of the two limiting plates 22), the pushing force applied by the push rod 41, and the milling process (the force applied when the milling cutter contacts the valve stem workpiece), it is possible to prevent the other end of the valve stem from tilting up when the clamping plate 54 is pressed. This ensures that the valve stem can maintain a stable fixed state in the radial, axial and circumferential directions during the milling process. After processing is completed, drive the feeding table 2 to move to the left, which releases the valve stem from its fixed state, and then the user can remove it from the limit plate 22.

[0109] Finally, when it is necessary to process the next valve stem, the above "adjustment stage" operation steps can be repeated according to the processing requirements. This will allow the distance between the two limit plates 22 to be readjusted. After adjustment, the operation can be carried out according to the above "conveying stage" steps.

[0110] Finally, it should be noted that the above embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The protection scope of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed in this application, or make equivalent substitutions for some of the technical features. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the protection scope of this application. Therefore, the protection scope of this application should be the protection scope of the claims.

Claims

1. A valve stem processing device, comprising a device body (1) and a top plate (3), wherein a straight groove (11) is formed on the top surface of the device body (1) along its length, the top plate (3) is disposed on the device body (1), and a feeding table (2) is slidably disposed within the straight groove (11), characterized in that: The top surface of the feeding platform (2) is provided with two limiting plates (22) that slide along the width direction. The adjacent ends of the two limiting plates (22) can be enclosed to form a V shape. The outer side of the limiting plates (22) is provided with positioning components along the width direction. The bottom surface of the top plate (3) is provided with several positioning plates (37) that are equidistant along the length direction. The positioning plates (37) are rectangular. The two adjacent positioning plates (37) can be enclosed to form an accommodating space. The positioning components can extend into the accommodating space. The feeding platform (2) is provided with an inner cavity (26). Two moving components are slidably arranged in the inner cavity (26) along the width direction. Each moving component is connected to a corresponding limiting plate (22). A transmission plate (27) is slidably arranged in the inner cavity (26) along the length direction. The two ends of the transmission plate (27) extend through the outside of the feeding platform (2). The transmission plate (27) can drive the moving components to slide. The top plate (3) is also provided with multiple storage boxes (31) of different volumes. Each storage box (31) can accommodate a valve stem of a certain diameter. The bottom surface of the storage box (31) is provided with a discharge port (32). The valve stem can complete the discharge operation through the discharge port (32). The moving component includes a longitudinal groove (28), a longitudinal block (281), and a longitudinal slide plate (283). The longitudinal groove (28) is distributed along the width direction and opened on both sides of the inner cavity (26). The longitudinal block (281) is slidably disposed on the inner side of the longitudinal groove (28). A first spring (282) is provided between the inner outer end of the longitudinal groove (28) and the longitudinal block (281). The longitudinal slide plate (283) is disposed above the longitudinal groove (28) along the length direction. The upper end of the longitudinal block (281) is connected to the longitudinal slide plate (283). A through groove (285) is opened between the top surface of the feeding table (2) and the inner cavity (26). The through groove (285) is opposite to the longitudinal groove (28). A first support block (286) is slidably disposed in the through groove (285). The upper and lower ends of the first support block (286) are respectively connected to the limiting plate (22) and the longitudinal slide plate (283). The positioning assembly includes a fixing block (23), a vertical rod (24), and a positioning roller (25). The fixing block (23) is located on the outside of the limiting plate (22). The vertical rod (24) is located on the fixing block (23) along the height direction. The upper end of the vertical rod (24) extends into the accommodating space. The positioning roller (25) is located on the vertical rod (24). The width of the positioning roller (25) is adapted to the width of the accommodating space. The transmission plate (27) has a protrusion (271) at the middle and both ends. The outer ends of the protrusion (271) are provided with multiple inclined ends (272) at equal intervals. The multiple inclined ends (272) form a stepped height difference. A flat end (273) is provided at the distance between two adjacent inclined ends (272). The inclined ends (272), flat ends (273) and protrusions (271) are integrally formed. One end of the longitudinal sliding plate (283) is provided with a force-bearing block (284) along the width direction. The force-bearing block (284) corresponds to the transmission plate (27) and the protrusion (271). The end of the force-bearing block (284) facing the protrusion (271) forms a trapezoidal structure. The inclined surface of the trapezoidal structure is adapted to the inclined end (272). The left side of the equipment body (1) is provided with a reset block (14) along the bottom surface of the straight groove (11). The reset block (14) corresponds to the force-bearing block (284). After the force-bearing block (284) is extended and displaced, it can be returned to its original position with the help of the reset block (14). Multiple feeding slots (33) are equidistantly provided in the top plate (3) along the width direction. Each feeding slot (33) corresponds to each storage box (31). The discharge port (32) is connected to the feeding slot (33). A piston pusher (34) is slidably provided on the right side inside the feeding slot (33). A discharge port (36) is provided on the left side inside the feeding slot (33). The discharge port (36) is connected to the bottom surface of the top plate (3). The discharge port (36) corresponds to the adjacent ends of the two limiting plates (22). An air guide pipe (35) is provided between the inside right side of the feeding trough (33) and the outside of the top plate (3). The air guide pipe (35) can fill or draw air into the inside right side of the feeding trough (33). The piston pusher (34) can push the valve rod in the feeding trough (33) to the outlet (36) with the help of gas.

2. The valve stem processing equipment according to claim 1, characterized in that: The device body (1) has an installation groove (55) on the right side of the inside along the width direction. A lifting plate (56) is slidably arranged in the installation groove (55) along the height direction. A third spring (57) is arranged between the bottom surface of the lifting plate (56) and the installation groove (55). Several slots (58) are equidistantly arranged between the top surface of the installation groove (55) and the straight groove (11) along the width direction. Each slot (58) is arranged along the same straight line. A pressure block (59) is slidably arranged in each slot (58). The height of each pressure block (59) increases sequentially from the inside to the outside. The bottom surface of each pressure block (59) is connected to the lifting plate (56).

3. The valve stem processing equipment according to claim 2, characterized in that: The bottom surface of the feeding table (2) is provided with a rectangular clearance groove (29) along the length direction. The clearance groove (29) corresponds to all the pressure blocks (59). A rectangular pressure plate (291) is slidably arranged in the clearance groove (29) along the width direction. The inner top surface of the clearance groove (29) is connected to the longitudinal groove (28). A second support block (292) is arranged between the bottom surface of the longitudinal block (281) and the top surface of the pressure plate (291). The longitudinal block (281) can drive the pressure plate (291) to move. The moving path of the pressure plate (291) intersects with the arrangement path of several pressure blocks (59), so that the pressure plate (291) can selectively align with one of the pressure blocks (59). Both ends of the pressure plate (291) and the pressure block (59) are provided with mutually compatible inclined surfaces.

4. The valve stem processing equipment according to claim 3, characterized in that: The top right side of the feeding platform (2) is provided with a planar stepped section (21), and the stepped section (21) is integrally formed with the feeding platform (2). The two limiting plates (22) are slidably installed on the top surface of the stepped section (21). A vertical height difference is formed between the top surface of the stepped section (21) and the inner left side of the feeding platform (2). A horizontal groove (4) is provided on the left side of the inside of the feeding platform (2) along its length, and the ends of the horizontal groove (4) extend out of the feeding platform (2) on both sides. The horizontal groove (4) corresponds to the inner central axis of the two limiting plates (22). A push rod (41) is slidably arranged in the horizontal groove (4), and one end of the push rod (41) extends out from the left side of the feeding platform (2). A connecting block (45) is provided on the left end of the push rod (41), and a second spring is sleeved on the left side of the outer wall of the push rod (41). (42), and the ends of the second spring (42) are connected to the connecting block (45) and the feeding table (2) respectively. The second spring (42) can push the feeding table (2) to move. A rectangular moving groove (44) is opened in the horizontal groove (4) along the length direction. A push block (43) is slidably arranged on the left side inside the moving groove (44). One end of the push block (43) is also connected to the push rod (41). The push rod (41) can drive the push block (43) to slide in the moving groove (44).

5. The valve stem processing equipment according to claim 4, characterized in that: The straight groove (11) is provided with a driving mechanism (6), which includes a guide groove (61), a lead screw (62) and a threaded block (63). The guide groove (61) is opened along the length direction on the rear side of the inner wall of the straight groove (11). The lead screw (62) is rotatably disposed in the guide groove (61) along the length direction. The threaded block (63) is disposed in the guide groove (61) and is threadedly connected to the lead screw (62). The lead screw (62) can drive the threaded block (63) to move. The top of the threaded block (63) is provided with a second bracket (65). One end of the second bracket (65) is connected to the connecting block (45). The outer side of the equipment body (1) is provided with a motor (64), which can drive the lead screw (62) to rotate. The feeding platform (2) has a movable groove (46) on the left side along the width direction. The right side of the moving groove (44) is connected to the movable groove (46). A movable block (47) is slidably arranged in the movable groove (46) along the height direction. The height of the movable block (47) is less than the internal height of the movable groove (46). When the pushing block (43) slides to the right side of the moving groove (44), the top surface of the pushing block (43) can push the movable block (47) to move upward. The opposite ends of the pushing block (43) and the movable block (47) are provided with mutually compatible inclined surfaces.

6. The valve stem processing equipment according to claim 5, characterized in that: The right side of the equipment body (1) is provided with a mounting base (5), which is integrally formed with the equipment body (1). The mounting base (5) is provided with a receiving cavity (51) that communicates with the straight groove (11). The internal height of the receiving cavity (51) is greater than the height of the straight groove (11). An opening (52) is provided between the right side of the mounting base (5) and the receiving cavity (51). The positioning plate (37) is separated from the receiving cavity (51). The inner wall of the receiving cavity (51) is connected to the two sides of the side groove (53). A clamping plate (54) is slidably arranged above the side groove (53) along the height direction. The clamping plate (54) is separated from the feeding table (2). The bottom surface of the clamping plate (54) is provided with an inverted V-shaped clamping groove (541). The clamping groove (541) corresponds to the adjacent ends of the two limiting plates (22). The inner wall surface of the clamping groove (541) is also provided with a friction block (542). The friction block (542) is made of rubber material.

7. The valve stem processing equipment according to claim 6, characterized in that: The mounting groove (55) is connected to the side groove (53). The two ends of the lifting plate (56) extend into the side groove (53). The top surface of the lifting plate (56) is provided with a first bracket (543) on both sides. One end of the first bracket (543) is connected to the clamping plate (54). The upper end of the inner wall of the straight groove (11) is provided with a first sliding groove (12) along the length direction. One end of the movable block (47) extends into the first sliding groove (12). A second sliding groove (13) is provided on the right side of the first sliding groove (12) along the length direction. The second sliding groove (13) is connected to the first sliding groove (12). The second sliding groove (13) is located above the first sliding groove (12). The internal height of the first sliding groove (12) is greater than the height of the movable block (47). When the movable block (47) moves within the first slide groove (12), the second slide groove (13) can limit the movable block (47) by means of the groove wall; When the push block (43) pushes the movable block (47) upward, the second slide (13) can be aligned with the movable block (47).

Images