Automatic wax injection device for valve model

Abstract

This utility model provides an automatic wax injection device for valve models, including a support base. A U-shaped frame is provided on the upper surface of the support base. Clamping components for holding and limiting the valve model are provided on the inner sides of the two vertical plates of the U-shaped frame. Multiple first threaded holes are equally spaced on the two vertical plates of the U-shaped frame. A gantry frame is provided on the upper surface of the U-shaped frame. An L-shaped connecting plate is provided at the lower end of the two vertical plates of the gantry frame. Second threaded holes corresponding to the first threaded holes are provided at both the front and rear ends of the L-shaped connecting plate. A storage tank is provided on the upper surface of the horizontal plate of the gantry frame. First telescopic cylinders are embedded at both the left and right ends of the upper surface of the horizontal plate of the gantry frame. A lifting plate is provided at the end of the telescopic rod of the first telescopic cylinder, and the lifting plate is located inside the gantry frame. This utility model improves the adaptability of the clamping mechanism, ensures uniform wax distribution, and increases the degree of production automation.

Description

Technical Field

[0001] This utility model relates to the field of valve model manufacturing technology, and in particular to an automatic wax injection device for valve models. Background Technology

[0002] Existing valve model wax injection processes suffer from numerous technical bottlenecks: In the clamping stage, traditional fixtures have a single structure, only suitable for specific valve model types. When processing products of different specifications, frequent fixture changes are necessary, increasing operational complexity and significantly reducing production efficiency. Regarding the wax injection process, manual operation makes it difficult to ensure uniform wax distribution, easily leading to localized underfilling or overfilling. Furthermore, air bubbles are inevitably introduced during manual wax injection, directly affecting the molding accuracy of the valve model's internal cavities. In addition, the entire wax injection process relies excessively on manual operation; the operator's experience level directly impacts product quality stability, making it difficult to guarantee consistent product performance during mass production. These problems severely restrict the improvement of precision and efficiency in valve model manufacturing. Summary of the Invention

[0003] In view of this, the purpose of this utility model is to provide an automatic wax injection device for valve models that can improve the adaptability of the clamping mechanism, ensure uniform distribution of wax liquid, and improve the degree of production automation.

[0004] This utility model is implemented using the following method: an automatic wax injection device for valve models, including a support base, a U-shaped frame on the upper surface of the support base, clamping members for clamping and limiting the valve model on the inner sides of the two vertical plates of the U-shaped frame, multiple first threaded holes equally spaced on the two vertical plates of the U-shaped frame, a gantry frame on the upper surface of the U-shaped frame, an L-shaped connecting plate at the lower end of the two vertical plates of the gantry frame, second threaded holes corresponding to the first threaded holes on both the front and rear ends of the L-shaped connecting plate, a storage tank on the upper surface of the horizontal plate of the gantry frame, first telescopic cylinders embedded on both the left and right ends of the upper surface of the horizontal plate of the gantry frame, a lifting plate at the end of the telescopic rod of the first telescopic cylinder, the lifting plate being located inside the gantry frame, a first strip-shaped opening on the lifting plate, a first motor inside the first strip-shaped opening, a first screw connected to the output end of the first motor, a moving block spirally sleeved on the first screw, an injection head embedded on the lower surface of the moving block, and the injection head being connected to the storage tank via a hose.

[0005] Furthermore, a second motor is provided on the upper surface of the storage tank, and a stirring rod is connected to the output end of the second motor. The stirring rod is located inside the storage tank and is equipped with stirring blades. A heating wire is provided inside the inner wall of the storage tank, and a feed inlet is provided at the right end of the upper surface of the storage tank.

[0006] Furthermore, the clamping component includes a clamping rod, and a support plate is provided on the inner side of the two vertical plates of the U-shaped frame. A second telescopic cylinder is embedded in the middle of the horizontal plate of the U-shaped frame. A sliding plate is provided at the end of the telescopic rod of the second telescopic cylinder. The lower ends of the left and right sides of the sliding plate are provided with sliding grooves corresponding to the support plate. A second strip-shaped opening is provided at the upper end of the sliding plate. A third motor is provided in the second strip-shaped opening. The output end of the third motor is connected to a second screw. The clamping rod is spirally sleeved on both the left and right ends of the second screw. The left half of the second screw is a left-hand thread, and the right half of the second screw is a right-hand thread.

[0007] The beneficial effects of this utility model are as follows: This utility model adapts to valve models of different specifications through an adjustable clamping mechanism, and achieves automated wax injection with a precise control wax injection system, which solves the technical problems of poor adaptability and uneven wax injection of traditional clamps, and has the advantages of improving processing efficiency and ensuring product quality stability. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of this utility model.

[0009] Figure 2 This is a structural schematic diagram of the gantry frame. Detailed Implementation

[0010] The present invention will be further described below with reference to the accompanying drawings.

[0011] Please see Figure 1 and Figure 2As shown, this utility model provides an embodiment: an automatic wax injection device for valve models, including a support base 1, a U-shaped frame 2 on the upper surface of the support base 1, clamping members 3 for clamping and limiting the valve model on the inner sides of the two vertical plates of the U-shaped frame 2, a plurality of first threaded holes 21 evenly spaced on the two vertical plates of the U-shaped frame 2, a gantry frame 4 on the upper surface of the U-shaped frame 2, an L-shaped connecting plate 41 at the lower end of the two vertical plates of the gantry frame 4, and second threaded holes 42 corresponding to the first threaded holes 21 on both the front and rear ends of the L-shaped connecting plate 41, and a horizontal plate on the upper surface of the gantry frame 4. The storage tank 43 is provided. The left and right ends of the horizontal plate of the gantry frame 4 are both embedded with first telescopic cylinders 44. The telescopic rod of the first telescopic cylinder 44 is provided with a lifting plate 45, and the lifting plate 45 is located inside the gantry frame 4. The lifting plate 45 has a first strip-shaped opening 46. The first motor (not shown) is provided in the first strip-shaped opening 46. The output end of the first motor is connected to a first screw 47. A moving block 48 is spirally sleeved on the first screw 47. An injection head 49 is embedded on the lower surface of the moving block 48. The injection head 49 is connected to the storage tank 43 via a hose 40.

[0012] Among them, the support base 1 refers to the basic structure that supports the entire device. Specifically, it can be formed by welding a metal frame to provide stable support.

[0013] U-shaped frame 2 refers to a support structure with a U-shaped profile, which can be processed by bending steel plates and used to install clamping components and provide a fixed foundation for the gantry.

[0014] Clamping component 3 refers to the component used to fix the valve model. Specifically, it can be a clamping rod driven by a bidirectional screw, and the clamping rod spacing can be adjusted to adapt to different size models.

[0015] Gantry 4 refers to the frame structure spanning above the U-shaped frame. Specifically, it can be made of rectangular steel pipes spliced ​​together and used to install storage tanks and lifting mechanisms.

[0016] L-shaped connecting plate 41 refers to a connecting component with a right-angle bend, which can be fixed to the U-shaped frame with bolts and is used to adjust the horizontal position of the gantry frame.

[0017] The first threaded hole 21 and the second threaded hole 42 are positioning holes used to fix the L-shaped connecting plate. Specifically, they can be distributed at equal intervals, and the front and rear positions of the gantry can be adjusted by matching different hole positions.

[0018] The first telescopic cylinder 44 refers to the actuator that drives the lifting plate to move vertically. Specifically, it can be a pneumatic cylinder or a hydraulic cylinder, used to control the initial height of the injection head.

[0019] The first strip opening 46 refers to the elongated through hole set on the lifting plate, which can accommodate the installation space of the first motor and the screw, and provide a sliding track for the moving block.

[0020] The first screw 47 and the moving block 48 refer to the transmission components that realize the horizontal movement of the injection head. Specifically, the screw can be driven to rotate by a motor, so that the moving block can be translated along the screw axis.

[0021] Injection head 449 refers to the wax output terminal, which can be a nozzle with heating function, connected to the storage tank through a hose to ensure continuous and stable delivery of wax.

[0022] Specifically, the support base serves as the foundation of the device. The U-shaped frame is fixed to the base surface with bolts. Clamping components are installed on the inner sides of the vertical plates on both sides, allowing valve models of different sizes to be clamped by adjusting the spacing of the clamping rods. Multiple sets of first threaded holes are opened on the vertical plates of the U-shaped frame, corresponding to the second threaded holes on the L-shaped connecting plate at the lower end of the gantry frame. The front and rear installation positions of the gantry frame are adjusted by selecting different combinations of hole positions. A storage tank is installed above the horizontal plate of the gantry frame to store molten wax. First telescopic cylinders are embedded on both sides of the horizontal plate to drive the lifting plate to move vertically. A first motor and a first screw are installed in the first strip-shaped opening on the lifting plate. When the motor drives the screw to rotate, the moving block moves horizontally along the screw axis, causing the injection head to be precisely positioned in the horizontal plane. The injection head is connected to the storage tank through a hose. Under pressure, the molten wax flows out evenly from the injection head and fills the internal cavity of the valve model.

[0023] Compared to existing technologies, traditional clamps use a fixed structure, making them unsuitable for different valve models. This solution, however, utilizes adjustable clamping components and a multi-position mounting design to allow for flexible adjustment of the clamping range and gantry position. Existing manual wax injection relies on operator experience, making it difficult to guarantee uniform wax filling. This solution uses a motor-driven screw to control the injection head's movement path, combined with a lifting mechanism to achieve precise positioning in three-dimensional space, ensuring consistent wax filling. Traditional processes involve cumbersome manual operations; this solution integrates clamping, positioning, and wax injection functions, reducing manual intervention and improving automation.

[0024] Through the above technical solution, this application can adapt to the clamping requirements of valve models of different sizes, realize the precise planning of wax injection path through mechanical transmission and automatic control, effectively improve the uniformity of wax filling and molding quality, while reducing the dependence on operator experience and improving production efficiency and process standardization.

[0025] Please continue reading. Figure 1 and Figure 2As shown, in one embodiment of the present invention, a second motor 5 is provided on the upper surface of the storage tank 43, and a stirring rod (not shown) is connected to the output end of the second motor 5. The stirring rod is disposed inside the storage tank 43 and a stirring blade (not shown) is provided on the stirring rod. A heating wire (not shown) is disposed inside the inner wall of the storage tank 43, and a feed inlet 51 is provided at the right end of the upper surface of the storage tank 43.

[0026] The second motor 5 refers to the power device that drives the stirring rod to rotate. Specifically, it can be implemented by a geared motor, which is used to drive the stirring blades to mix the wax liquid.

[0027] The stirring rod is the transmission component that connects the motor and the stirring blades. It can be made of stainless steel shaft and is used to transmit rotational power.

[0028] Among them, the stirring blades refer to the mixing structure fixed on the stirring rod, which can be implemented by spiral blades, to improve the fluidity of the wax liquid and eliminate air bubbles.

[0029] The heating wire refers to the heating element embedded in the inner wall of the storage tank. Specifically, it can be implemented using nickel-chromium alloy resistance wire, which is used to maintain the temperature of the wax liquid to prevent solidification.

[0030] Among them, the feed port 51 refers to the opening structure at the top of the storage tank, which can be implemented by a funnel-shaped interface with a sealing cap, for replenishing wax raw materials.

[0031] Specifically, the second motor drives the stirring rod to rotate via its output shaft, causing the stirring blades to continuously agitate the molten wax in the storage tank. During stirring, the spiral blades tumble the molten wax deposited at the bottom of the tank upwards, ensuring uniform mixing of the wax components in different areas. The heating wire generates heat when energized, which is then used to maintain a constant temperature of the molten wax through the inner wall of the tank, preventing an increase in viscosity due to temperature drops. The feed inlet remains sealed during material replenishment to prevent external impurities from entering.

[0032] Compared to existing technologies, traditional wax injection devices rely on manual stirring and external heating equipment, resulting in uneven mixing and large temperature fluctuations. This solution integrates stirring and heating functions to achieve automatic control of the wax state, reducing manual intervention and improving process stability.

[0033] Through the above technical solution, this application solves the problem of filling defects caused by uneven wax mixing, ensuring that the wax maintains uniform composition and suitable fluidity before injection, thereby improving the molding quality of the internal cavity of the valve model.

[0034] Please continue reading. Figure 1As shown, in one embodiment of this utility model, the clamping member 3 includes a clamping rod 31, and a support plate 32 is provided on the inner side of the two vertical plates of the U-shaped frame 2. A second telescopic cylinder 33 is embedded in the middle of the horizontal plate of the U-shaped frame 2. A sliding plate 34 is provided at the end of the telescopic rod of the second telescopic cylinder 33. The lower ends of the left and right sides of the sliding plate 34 are provided with sliding grooves 35 corresponding to the support plate 32. A second strip-shaped opening 36 is provided at the upper end of the sliding plate 34. A third motor (not shown) is provided in the second strip-shaped opening 36. The output end of the third motor is connected to a second screw 37. The clamping rod 31 is spirally sleeved on both the left and right ends of the second screw 37. The left half of the second screw 37 is a left-hand thread, and the right half of the second screw 37 is a right-hand thread.

[0035] The left-hand and right-hand threads on the second screw 37 refer to two different thread directions on the same screw. This can be achieved using a segmented thread processing technology, with the helix direction of the left half of the thread being opposite to that of the right half. This structure enables the synchronous reverse movement of the two clamping rods.

[0036] The cooperation relationship between the sliding groove 35 and the support plate 32 means that the sliding plate slides vertically along the support plate through the sliding groove. Specifically, a dovetail groove or T-groove structure can be used to restrict the sliding plate to move only in the vertical plane.

[0037] The third motor driving the second screw 37 to rotate means that the screw is driven to rotate by the output torque of the motor. Specifically, a stepper motor or a servo motor can be used to precisely control the displacement of the clamping rod.

[0038] Specifically, when valve models of different sizes need to be clamped, the second telescopic cylinder pushes the sliding plate to move vertically along the support plate to the target height. The third motor drives the second screw to rotate, and the left-hand and right-hand threads respectively drive the left and right clamping rods to move synchronously in opposite directions along the second strip groove until the clamping rods contact and fix the two sides of the valve model. Due to the symmetrical thread structure of the second screw, the clamping rods always maintain symmetrical movement, avoiding model displacement caused by unilateral force application.

[0039] Compared to existing technologies, traditional fixtures use a fixed clamping structure, which can only accommodate a single type of valve model. This solution, through a vertically adjustable sliding plate and a bidirectional threaded drive mechanism, allows the clamping rod to adapt to models of different heights and widths. Existing technologies require machine downtime for fixture replacement, while this solution only requires adjusting the cylinder stroke and motor rotation angle to achieve adaptation, significantly reducing production downtime.

[0040] Through the above technical solution, this application solves the problem of poor clamping versatility in traditional valve model wax injection devices, enabling rapid adaptation to models of different sizes and avoiding efficiency losses caused by frequent clamp changes. The symmetrical movement mechanism of the clamping rod ensures that the center position of the model is always aligned with the wax injection head, eliminating uneven wax distribution caused by clamping offset. The rigid fit structure between the sliding plate and the support plate effectively suppresses vibration interference, ensuring clamping stability and reliability of the wax injection process.

[0041] The motor and telescopic cylinder in this utility model are both existing technologies, which are already clearly understood by those skilled in the art, and will not be described in detail here.

[0042] The above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall be covered by the present utility model.

Claims

1. A valve model automatic wax injection device, characterized in that: The device includes a support base, on the upper surface of which is provided a U-shaped frame. Clamping components for holding and limiting the valve model are provided on the inner sides of the two vertical plates of the U-shaped frame. Multiple first threaded holes are equally spaced on the two vertical plates of the U-shaped frame. A gantry frame is provided on the upper surface of the U-shaped frame. An L-shaped connecting plate is provided at the lower end of the two vertical plates of the gantry frame. Second threaded holes corresponding to the first threaded holes are provided at both the front and rear ends of the L-shaped connecting plate. A storage tank is provided on the upper surface of the horizontal plate of the gantry frame. First telescopic cylinders are embedded at both the left and right ends of the upper surface of the horizontal plate of the gantry frame. A lifting plate is provided at the end of the telescopic rod of the first telescopic cylinder, and the lifting plate is located inside the gantry frame. A first strip-shaped opening is provided on the lifting plate. A first motor is provided within the first strip-shaped opening. A first screw is connected to the output end of the first motor. A moving block is spirally sleeved on the first screw. An injection head is embedded on the lower surface of the moving block. The injection head is connected to the storage tank via a flexible hose.

2. The automatic wax injection device for a valve model according to claim 1, characterized in that: A second motor is installed on the upper surface of the storage tank. The output end of the second motor is connected to a stirring rod. The stirring rod is installed inside the storage tank and has stirring blades. A heating wire is installed inside the inner wall of the storage tank. A feed inlet is installed at the right end of the upper surface of the storage tank.

3. The automatic wax injection device for a valve model according to claim 1, characterized in that: The clamping component includes a clamping rod. Support plates are provided on the inner sides of the two vertical plates of the U-shaped frame. A second telescopic cylinder is embedded in the middle of the horizontal plate of the U-shaped frame. A sliding plate is provided at the end of the telescopic rod of the second telescopic cylinder. The lower ends of the left and right sides of the sliding plate are provided with sliding grooves corresponding to the support plates. A second strip-shaped opening is provided at the upper end of the sliding plate. A third motor is provided in the second strip-shaped opening. The output end of the third motor is connected to a second screw. The clamping rod is spirally sleeved on both the left and right ends of the second screw. The left half of the second screw is a left-hand thread, and the right half of the second screw is a right-hand thread.

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