Air conditioner closed valve seat milling clamp

Abstract

The utility model provides a kind of air conditioner closed valve seat milling fixture: including pedestal, the positioning seat being set on pedestal and the compacting seat being open and connected on positioning seat, compacting seat and positioning seat between being equipped with the positioning cavity for accommodating valve seat blank;Positioning seat is connected with the vertically upward extending guide component, compacting seat is slidably connected on guide component and can move up and down along the height direction of guide component;Guide component is located above compacting seat and is equipped with compacting component, compacting component is used to drive compacting seat to press down, so that compacting seat and positioning seat clamp the valve seat blank in positioning cavity;When it is necessary to open fixture, only need to remove the pressure exerted on compacting seat by compacting component, then compacting seat is lifted along guide component, compacting seat and positioning seat can be separated, user can conveniently take out the processed valve seat from positioning cavity;The fixture does not need to be taken off from positioning seat when opening, simple and convenient operation, high efficiency.

Description

Technical Field

[0001] This utility model relates to the field of milling fixture technology, specifically to a milling fixture for a closed valve seat of an air conditioner. Background Technology

[0002] Closed valve seats are one of the important components of air conditioners. During processing, the valve seat blank needs to be fixed in a fixture first, and then milled on a milling machine. In order to ensure the machining accuracy of the valve seat, the fixture must firmly fix the valve seat blank. Existing valve seat milling fixtures usually include a positioning seat and a clamping seat. There is a positioning cavity between the positioning seat and the clamping seat for accommodating the valve seat blank. The clamping seat is connected to the positioning seat by fixing bolts and presses the valve seat blank into the positioning cavity.

[0003] To ensure that the fixture can firmly clamp the valve seat blank, multiple fixing bolts are required. When opening or locking the clamping seat, all fixing bolts need to be unscrewed or tightened, which makes the opening and locking operation of the fixture too cumbersome and severely restricts the milling efficiency of the valve seat. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a milling fixture that can quickly clamp or release the closed valve seat of an air conditioner.

[0005] The technical solution of this utility model is to provide a milling fixture for an air conditioning closed valve seat with the following structure: The device includes a base, a positioning seat mounted on the base, and an openable clamping seat connected to the positioning seat. A positioning cavity for accommodating a valve seat blank is provided between the clamping seat and the positioning seat. A vertically upward extending guide assembly is connected to the positioning seat. The clamping seat is slidably connected to the guide assembly and can move up and down along the height direction of the guide assembly. A clamping assembly is provided above the guide assembly, and the clamping assembly is used to drive the clamping seat to press down, so that the clamping seat and the positioning seat clamp the valve seat blank in the positioning cavity.

[0006] With the above structure, the air conditioner closed valve seat milling fixture of this utility model has the following advantages compared with the prior art: This invention features a vertically extending guide assembly on the positioning seat, allowing the clamping seat to move up and down on the guide assembly. When the clamp needs to be opened, simply remove the pressure applied to the clamping seat by the clamping assembly, and then lift the clamping seat along the guide assembly to separate it from the positioning seat, making it convenient for the user to remove the machined valve seat from the positioning cavity. After the valve seat blank is reinserted, the clamping assembly drives the clamping seat to press down, clamping the clamping seat and the positioning seat together to clamp the valve seat blank in the positioning cavity. This clamp does not require removing the clamping seat from the positioning seat when opening, making it simple, convenient, and efficient.

[0007] Preferably, the guiding assembly includes several guide rods connected to the positioning seat, and the clamping seat has guide holes corresponding to the guide rods one by one. The guide rods are slidably connected to the corresponding guide holes. The guide rods are fixedly connected to the positioning seat and are used to guide the clamping seat so that they can be aligned with the positioning seat when the clamping seat is pressed down.

[0008] Preferably, the clamping assembly includes a support plate connected to the guide assembly. The support plate has a threaded hole extending through its upper and lower end faces. A clamping screw is threaded into the threaded hole, and the connecting end of the clamping screw passes through the threaded hole from top to bottom and abuts against the top of the clamping seat. The clamping seat can be clamped onto the positioning seat by turning the clamping screw, and the clamping seat can be unlocked by reversing the operation, making the operation simple and convenient.

[0009] Preferably, there are multiple screw holes, evenly distributed on the support plate; the clamping screws on the multiple screw holes can make the pressure applied to the clamping seat more uniform. When fixing the valve seat blank, the clamping screws on the screw holes located at the center of the support plate can be tightened first to play a pre-clamping role. During this process, the valve seat blank is automatically aligned by the positioning cavity, and then the product is clamped by single-point fixing.

[0010] Preferably, the clamping assembly further includes a movable pressure plate, which can extend into or retract from the gap between the supporting pressure plate and the clamping seat. The movable pressure plate allows indirect contact between the clamping screw and the clamping seat, thereby distributing the pressure applied by the clamping screw more evenly. Additionally, the movable pressure plate can indirectly shorten the distance between the lower end of the clamping screw and the upper surface of the clamping seat, thus reducing the downward turning distance of the clamping screw, saving time and improving efficiency. Furthermore, because the bore wall of the closed valve seat is relatively thin, the movable pressure plate can also effectively reduce stress release during product processing, ensuring product dimensional tolerances.

[0011] Preferably, the movable pressure plate includes a rotating part and a supporting part, the thickness of which is smaller than that of the supporting part. The rotating part has a pivot hole penetrating its upper and lower end faces. The rotating part is circumferentially connected to one of the guide rods through the pivot hole and can slide up and down along the guide rod. The supporting part can extend into or out of the gap between the supporting pressure plate and the clamping seat as the rotating part rotates circumferentially. Rotating the rotating part of the movable pressure plate allows the supporting part to extend into or out of the gap between the supporting pressure plate and the clamping seat. When the user needs to open the clamp, loosening the clamping screw releases the applied pressure, then unscrewing the supporting part out of the gap between the supporting pressure plate and the clamping seat, and then lifting the clamping seat opens the clamp. During the lifting of the clamping seat, the small thickness of the rotating part does not affect the lifting of the clamping seat.

[0012] Preferably, the base is provided with several fixing grooves evenly spaced along its circumference, for fixing the base to the workbench by fixing bolts. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the structure of the clamping seat and the positioning seat when they are separated in this utility model.

[0015] Figure 3 This is an exploded view of the present invention.

[0016] Figure 4 This is a schematic diagram of the movable pressure plate in this utility model.

[0017] Explanation of reference numerals in the attached figures: 1. Base; 11. Fixing groove; 2. Positioning seat; 21. Guide assembly; 3. Pressing seat; 31. Guide hole; 4. Pressing assembly; 41. Support plate; 411. Screw hole; 42. Movable plate; 421. Rotating part; 422. Support part; 423. Rotating shaft hole; 5. Valve seat blank. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", 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 utility model 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 utility model. At the same time, the terms "first", "second", etc., are only used to distinguish the names of various components and do not have a primary or secondary relationship. Therefore, they should not be construed as limitations on this utility model.

[0020] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown; This utility model discloses a milling fixture for a closed valve seat of an air conditioner: it includes a base 1, a positioning seat 2 disposed on the base 1, and an openable clamping seat 3 connected to the positioning seat 2. A positioning cavity for accommodating a valve seat blank 5 is provided between the clamping seat 3 and the positioning seat 2. The base 1 is provided with a plurality of fixing grooves 11 evenly spaced along its circumference for fixing the base 1 to the worktable by fixing bolts.

[0021] The positioning seat 2 is connected to a guide component 21 that extends vertically upward. The guide component 21 includes several guide rods connected to the positioning seat 2, and the guide rods are located at the edge of the positioning seat 2.

[0022] The clamping seat 3 has guide holes 31 corresponding to the guide rods. The guide rods pass through the corresponding guide holes 31, allowing the clamping seat 3 to connect to the guide rods and move up and down along the height direction of the guide rods. The guide rods are fixedly connected to the positioning seat 2 and serve to guide the clamping seat 3, ensuring that it aligns perfectly with the positioning seat 2 when the clamping seat 3 is pressed down. There are three guide rods arranged in a triangle to prevent the product from falling abnormally during disassembly and to reduce product scrap due to impact damage.

[0023] The guide assembly 21 is located above the clamping seat 3 and is provided with a clamping assembly 4. The clamping assembly 4 is used to force the clamping seat 3 to press down, so that the clamping seat 3 and the positioning seat 2 clamp the valve seat blank 5 in the positioning cavity.

[0024] The clamping assembly 4 includes a support plate 41 connected to the guide assembly 21. The support plate 41 has a screw hole 411 that passes through its upper and lower end faces. A clamping screw (not shown in the figure) is threaded into the screw hole 411. The connecting end of the clamping screw passes through the screw hole 411 from top to bottom and abuts against the top of the clamping seat 3. The clamping seat 3 can be clamped onto the positioning seat 2 by turning the clamping screw. The clamping seat 3 can be unlocked by reversing the operation. The operation is simple and convenient.

[0025] The support plate 41 has multiple screw holes 411, which are evenly distributed on the support plate 41. This allows for more uniform pressure applied to the clamping seat 3 by multiple clamping screws. When fixing the valve seat blank, the clamping screws located in the screw holes 411 at the center of the support plate 41 can be tightened first to pre-clamp it. During this process, the valve seat blank automatically aligns itself through the positioning cavity, and then the product is clamped by single-point fixing.

[0026] like Figure 2 and Figure 3 As shown, the clamping assembly 4 also includes a movable pressure plate 42, which can extend into or retract from the gap between the supporting pressure plate 41 and the clamping seat 3. When the movable pressure plate 42 extends into the gap between the supporting pressure plate 41 and the clamping seat 3, the clamping screw can indirectly contact the clamping seat 3, thereby distributing the pressure applied by the clamping screw more evenly. In addition, the movable pressure plate 42 can indirectly shorten the distance between the lower end of the clamping screw and the upper surface of the clamping seat 3, thereby reducing the distance the clamping screw needs to be screwed downwards, thus saving time and improving efficiency. Furthermore, because the bore wall of the closed valve seat is relatively thin, the movable pressure plate 42 can also effectively reduce stress release during product processing and ensure product dimensional tolerances.

[0027] like Figure 4As shown, the movable pressure plate 42 includes a rotating part 421 and a supporting part 422. The thickness of the rotating part 421 is smaller than that of the supporting part 422. The rotating part 421 is provided with a pivot hole 423 that passes through its upper and lower end faces. The rotating part 421 is circumferentially connected to one of the guide rods through the pivot hole 423 and can slide up and down along the guide rod. The supporting part 422 can extend into or out of the gap between the supporting pressure plate 41 and the pressing seat 3 as the rotating part 421 rotates circumferentially.

[0028] The user can rotate the rotating part 421 of the movable pressure plate 42 to make the support part 422 extend into or retract from the gap between the support pressure plate 41 and the clamping seat 3. When the user needs to open the clamp, loosen the clamping screw to release the pressure it applies, then unscrew the support part 422 out of the gap between the support pressure plate 41 and the clamping seat 3, and then lift the clamping seat 3 to open the clamp and quickly remove the processed valve seat. During the lifting of the clamping seat 3, since the thickness of the rotating part 421 is smaller than the thickness of the support part 422, it will not affect the lifting of the clamping seat 3.

[0029] This invention features a vertically upward-extending guide assembly 21 on the positioning seat 2, with the clamping seat 3 slidably connected to the guide assembly 21. When the clamp needs to be opened, simply loosen the clamping screw, then rotate the movable pressure plate 42 to unscrew the support part 422 out of the gap between the support pressure plate 41 and the clamping seat 3. At this point, the pressure applied to the clamping seat 3 is removed, allowing the clamping seat 3 to be lifted along the guide assembly 21, separating it from the positioning seat 2. This facilitates the user in removing the machined valve seat from the positioning cavity. After re-inserting the valve seat blank 5, the support part 422 is screwed back into the gap between the support pressure plate 41 and the clamping seat 3. Finally, the clamping screw is tightened to clamp the valve seat blank 5 in the positioning cavity between the clamping seat 3 and the positioning seat 2. This clamp does not require removing the clamping seat 3 from the positioning seat 2 when opening, making it simple, convenient, and efficient.

[0030] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A milling fixture for a closed valve seat of an air conditioner, comprising a base (1), a positioning seat (2) disposed on the base (1), and an openable clamping seat (3) connected to the positioning seat (2), wherein a positioning cavity for accommodating a valve seat blank (5) is provided between the clamping seat (3) and the positioning seat (2); characterized in that: The positioning seat (2) is connected to a guide assembly (21) extending vertically upward. The clamping seat (3) is slidably connected to the guide assembly (21) and can move up and down along the height direction of the guide assembly (21). The guide assembly (21) is provided with a clamping assembly (4) above the clamping seat (3). The clamping assembly (4) is used to drive the clamping seat (3) to press down, so that the clamping seat (3) and the positioning seat (2) clamp the valve seat blank (5) in the positioning cavity.

2. The air conditioning closed valve seat milling fixture according to claim 1, characterized in that: The guide assembly (21) includes several guide rods connected to the positioning seat (2), and the clamping seat (3) is provided with guide holes (31) corresponding to the guide rods. The guide rods are slidably connected to the corresponding guide holes (31).

3. The air conditioning closed valve seat milling fixture according to claim 2, characterized in that: The clamping assembly (4) includes a support plate (41) connected to the guide assembly (21). The support plate (41) has a screw hole (411) that passes through its upper and lower end faces. A clamping screw is threaded into the screw hole (411). The connecting end of the clamping screw passes through the screw hole (411) from top to bottom and abuts against the top of the clamping seat (3).

4. The air conditioning closed valve seat milling fixture according to claim 3, characterized in that: There are multiple screw holes (411), which are evenly distributed on the support plate (41).

5. A milling fixture for an air conditioning closed valve seat according to claim 3, characterized in that: The clamping assembly (4) also includes a movable pressure plate (42) that can extend into or out of the gap between the support pressure plate (41) and the clamping seat (3).

6. A milling fixture for an air conditioning closed valve seat according to claim 5, characterized in that: The movable pressure plate (42) includes a rotating part (421) and a supporting part (422). The thickness of the rotating part (421) is smaller than that of the supporting part (422). The rotating part (421) is provided with a pivot hole (423) that passes through its upper and lower end faces. The rotating part (421) is circumferentially connected to one of the guide rods through the pivot hole (423) and can slide up and down along the guide rod. The supporting part (422) can extend into or out of the gap between the supporting pressure plate (41) and the pressing seat (3) as the rotating part (421) rotates circumferentially.

7. The air conditioning closed valve seat milling fixture according to claim 1, characterized in that: The base (1) is provided with several fixing grooves (11) evenly spaced along its circumference, which are used to fix the base (1) to the workbench by fixing bolts.

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