High-purity fluororesin injection molding screw repairing device based on laser cladding

Abstract

The utility model discloses a high purity fluororesin injection molding screw repairing device based on laser cladding, which comprises a laser cladding carrier and a laser cladding spray head, the laser cladding spray head is connected with the laser cladding carrier through a lifting connecting rod unit, the upper end face of the laser cladding carrier is provided with a cladding spray head supporting platform, and the laser cladding spray head supporting platform is connected with the laser cladding carrier through a lifting connecting rod unit. A threaded hole is formed in the laser cladding carrier in the horizontal direction, the threaded hole penetrates through the laser cladding carrier and extends from one side wall of the laser cladding carrier to the other side wall of the laser cladding carrier, and the four ends of the lower end face of the laser cladding carrier are connected with vertically-arranged sliding blocks. According to the high-purity fluororesin injection molding screw repairing device based on laser cladding, the to-be-repaired screw is driven by the motor to rotate, and meanwhile, the laser cladding carrier which is in threaded connection with the to-be-repaired screw moves horizontally together, so that the to-be-repaired screw is repaired in all directions.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection screws, and in particular relates to a high-purity fluororesin injection screw repair device based on laser cladding. Background Art

[0002] The high-purity fluororesin injection screw is one of the important components of the injection molding machine; its function is to transport, compact, melt, stir and pressurize the plastic; the above steps need to be completed by the rotation of the injection molding screw in the barrel. When the injection molding screw rotates, the plastic will produce friction and mutual movement with the inner wall of the barrel, the bottom surface of the screw groove, the screw edge propulsion surface, and between the plastics. The forward propulsion of the plastic is achieved through the combination of the movement of the injection molding screw. In this process, the heat generated by friction is also absorbed by the barrel to increase the temperature of the plastic and melt the plastic.

[0003] The injection molding screw will inevitably produce wear and tear when working in an environment of high temperature, high pressure, high-intensity mechanical torque and high-frequency friction for a long time. Long-term friction and wear may cause the injection molding screw to fail.

[0004] At the same time, if the injection molding screw is used to process corrosive plastic materials, the surface of the injection molding screw may be corroded, further reducing the service life of the injection molding screw, resulting in reduced strength of the injection molding screw, and long-term cycle work may lead to fatigue failure of the injection molding screw;

[0005] Moreover, working in a high temperature environment may also cause the injection molding screw to fail due to thermal fatigue. Long-term high temperature operation may change the structure of the injection molding screw, ultimately affecting its performance.

[0006] Therefore, a solution is needed to solve the above problems.

[0007] It should be noted that the above contents belong to the technical knowledge of the inventor and do not necessarily constitute prior art. Utility Model Content

[0008] In order to solve the above problems, the purpose of the utility model is to provide a high-purity fluororesin injection molding screw repair device based on laser cladding, which can rotate the screw to be repaired through a motor and drive the laser cladding carrier and the laser cladding nozzle to move around the outer edge of the screw to be repaired, thereby realizing the cladding repair of the screw to be repaired.

[0009] To achieve the above-mentioned purpose, the utility model proposes a high-purity fluororesin injection molding screw repair device based on laser cladding, characterized in that it includes a laser cladding carrier and a laser cladding nozzle, the laser cladding nozzle is connected to the laser cladding carrier through a lifting connecting rod unit and is arranged directly above the laser cladding carrier, the upper end surface of the laser cladding carrier is provided with a cladding nozzle support platform, the laser cladding carrier is provided with a threaded hole in the horizontal direction, the threaded hole penetrates the laser cladding carrier and extends from one side wall of the laser cladding carrier to the other side wall, the upper end surface of the laser cladding carrier is provided with a first repair hole for the laser cladding nozzle to perform repair operations, and the four ends of the lower end surface of the laser cladding carrier are connected to vertically arranged sliders.

[0010] In one example, the lifting link unit includes a first link, a lifting rod and a third link, the two ends of the lifting rod are respectively movably connected to the first link and the third link, the other end of the first link is connected to the laser cladding nozzle, and the other end of the third link is connected to the laser cladding carrier.

[0011] In one example, a second repair hole for the laser cladding nozzle to perform repair operations is opened on the upper end surface of the cladding nozzle support platform.

[0012] In one example, a heat sink is provided around the cladding nozzle support platform.

[0013] In one example, the heat dissipation plate is a hollow structure.

[0014] In one example, the laser cladding carrier is movably embedded on a fixed platform via a slider.

[0015] In one example, a group of parallel guide rails are provided on the fixed platform, and the slider is movably embedded in the guide rails, so that the laser cladding carrier can be horizontally displaced along the extension direction of the guide rails.

[0016] In one example, a three-jaw chuck and a screw fixing block are further provided on the fixed platform, and the three-jaw chuck and the screw fixing block are arranged on the same horizontal line, and a screw to be repaired is arranged between the three-jaw chuck and the screw fixing block, and the screw to be repaired passes through the laser cladding carrier through the threaded hole and has its two ends respectively fixed on the three-jaw chuck and the screw fixing block.

[0017] In one example, a motor is provided on one side of the screw fixing block away from the laser cladding carrier, and an output end of the motor passes through the screw fixing block and extends to the other side of the screw fixing block to connect with the screw to be repaired.

[0018] In one example, one end of the screw to be repaired away from the screw fixing block is sleeved in a sleeve, and the sleeve is clamped in the three-jaw chuck.

[0019] The high-purity fluororesin injection molding screw repair device based on laser cladding proposed by the utility model can bring the following beneficial effects:

[0020] The motor drives the screw to be repaired to rotate, and at the same time, the laser cladding carrier threadedly connected to the screw to be repaired moves horizontally, so as to achieve all-round repair of the screw to be repaired;

[0021] The three-jaw chuck cooperates with the screw fixing block to position the screw to be repaired, and the characteristic of the three-jaw chuck being able to freely adjust the clamping jaws is utilized, so that the device can be applied to screws to be repaired of different sizes, thereby improving the application range of the device;

[0022] The laser cladding carrier is connected to the screw to be repaired through a threaded hole, which can ensure that it passes through every position of the screw to be repaired. The laser cladding nozzle and the laser cladding carrier become an integrated device through the lifting connecting rod unit. Through the connection between the laser cladding carrier and the screw to be repaired, the laser cladding nozzle can traverse all positions of the screw to be repaired and provide repair.

[0023] The setting of the guide rail and the slider ensures that the laser cladding carrier always keeps horizontal movement during operation, thus improving the stability of the laser cladding nozzle repair;

[0024] The heat sink with a hollow design can not only help dissipate heat during the laser cladding process and reduce thermal deformation that does not require repair or replacement, but the hollow design also makes it easier to observe the working conditions during work. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0026] Figure 1 The utility model is a three-dimensional structural schematic diagram of a high-purity fluororesin injection molding screw repair device based on laser cladding.

[0027] Figure 2 It is a schematic diagram of the connection structure of the laser cladding carrier and the laser cladding nozzle of the utility model.

[0028] Figure 3 This is an internal cross-sectional view of the laser cladding carrier and the laser cladding nozzle of the utility model when they are working. DETAILED DESCRIPTION

[0029] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in the form of examples in conjunction with the accompanying drawings.

[0030] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present utility model, unless otherwise clearly specified and limited, the first feature "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description of reference terms "one scheme", "some schemes", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the scheme or example are included in at least one scheme or example of the present utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same scheme or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more schemes or examples.

[0034] like Figure 1 to Figure 3As shown, an embodiment of the utility model proposes a high-purity fluororesin injection screw repair device based on laser cladding, characterized in that it includes a laser cladding carrier 6 and a laser cladding nozzle 4, the laser cladding nozzle 4 is connected to the laser cladding carrier 6 through a lifting connecting rod unit 5, and is arranged directly above the laser cladding carrier 6, and a cladding nozzle support platform 3 is arranged on the upper end surface of the laser cladding carrier 6, a threaded hole 61 is opened in the horizontal direction of the laser cladding carrier 6, and the threaded hole 61 penetrates the laser cladding carrier 6 and extends from one side wall of the laser cladding carrier 6 to the other side wall, and a first repair hole 62 is opened on the upper end surface of the laser cladding carrier 6 for the laser cladding nozzle 4 to perform a repair operation, and the four ends of the lower end surface of the laser cladding carrier 6 are connected to a vertically arranged slider 9, the screw 2 to be repaired is horizontally penetrated in the laser cladding carrier 6, and the laser cladding carrier 6 can be horizontally displaced through the slider 9, so that the laser cladding nozzle 4 can accurately align with the worn part of the screw 2 to be repaired, and the laser cladding nozzle 4 is used for cladding repair.

[0035] Specifically, the lifting link unit 5 includes a first link 51, a lifting rod 52 and a second link 53. The two ends of the lifting rod 52 are movably connected to the first link 51 and the second link 53 respectively. The other end of the first link 51 is connected to the laser cladding nozzle 4, and the other end of the second link 53 is connected to the laser cladding carrier 6. When the laser cladding carrier 6 is translated to the worn part of the screw 2 to be repaired, the lifting rod 52 is displaced in the vertical direction through the control system, driving the laser cladding nozzle 4 to move toward the direction of the first repair hole 62, thereby realizing point-to-point laser cladding repair work.

[0036] Specifically, the upper end surface of the cladding nozzle support platform 3 is provided with a second repair hole 31 for the laser cladding nozzle 4 to perform repair operations, and the second repair hole 31 overlaps with the first repair hole 62 in the vertical direction.

[0037] Specifically, a heat sink 10 is provided around the cladding nozzle support platform 3 , and the heat sink 10 can help dissipate heat during the laser cladding process and reduce thermal deformation that does not require repair or re-positioning.

[0038] Specifically, the heat sink 10 is a hollow structure, which makes it easy to observe the working conditions during operation.

[0039] Specifically, the laser cladding carrier 6 is movably embedded on the fixed platform 12 through the slider 9, and the slider 9 realizes the horizontal displacement of the laser cladding carrier 6 on the fixed platform 12, thereby ensuring that the laser cladding nozzle 4 can be positioned to the worn part of the screw 2 to be repaired.

[0040] Specifically, a group of parallel guide rails 8 are provided on the fixed platform 12, and the slider 9 is movably embedded in the guide rails 8, so that the laser cladding carrier 6 can be horizontally displaced along the extension direction of the guide rails 8. The extension direction of the guide rails 8 is consistent with the fixing direction of the screw 2 to be repaired, so that the laser cladding carrier 6 can be horizontally displaced along the outer edge of the screw 2 to be repaired, so that the laser cladding nozzle 4 can maintain horizontal movement during work, thereby improving the stability and accuracy of the laser cladding nozzle 4 during operation, thereby improving the efficiency of repairing the screw.

[0041] Specifically, a three-jaw chuck 1 and a screw fixing block 7 are also provided on the fixed platform 12. The three-jaw chuck 1 and the screw fixing block 7 are arranged on the same horizontal line. The screw 2 to be repaired is set between the three-jaw chuck 1 and the screw fixing block 7. The screw 2 to be repaired passes through the laser cladding carrier 6 through the threaded hole 61 and the two ends are respectively fixed on the three-jaw chuck 1 and the screw fixing block 7. Through the cooperation of the three-jaw chuck 1 and the screw fixing block 7, the screw 2 to be repaired can be horizontally passed through the laser cladding carrier 6 to avoid rotation or deflection during the cladding process, thereby affecting the repair quality.

[0042] Specifically, a motor 11 is provided on the side of the screw fixing block 7 away from the laser cladding carrier 6. The output end of the motor 11 passes through the screw fixing block 7 and extends to the other side of the screw fixing block 7 to connect to the screw 2 to be repaired. The motor 11 can drive the screw 2 to be repaired to rotate, so as to facilitate the repair of all angles of the screw 2 to be repaired and avoid repairing dead angles.

[0043] Specifically, one end of the screw rod 2 to be repaired away from the screw rod fixing block 7 is sleeved in the sleeve 13 , and the sleeve 13 is clamped in the three-jaw chuck 1 .

[0044] Working principle: During use, first insert the screw to be repaired into the laser cladding carrier, the screw fixing block and the sleeve, wherein one end of the screw to be repaired is inserted into the sleeve and embedded in the three-jaw chuck through the sleeve, and the other end of the screw to be repaired is inserted into the screw fixing block and connected to the output end of the motor. Start the motor, the motor drives the screw to be repaired to rotate, and the screw to be repaired drives the cladding nozzle carrier to move. At the same time, due to the cooperation between the guide rail and the slider connected to the cladding nozzle carrier, the cladding nozzle carrier moves horizontally along the direction of the screw to be repaired. During the horizontal movement, the screw to be repaired is analyzed, and the laser cladding nozzle is lowered to the cladding nozzle support platform through the lifting rod at the position where repair is required, and the screw to be repaired is repaired. During work, the heat sink dissipates part of the heat generated during the work. After the work is completed, the screw to be repaired is taken out of the device, and all repair work on the screw to be repaired is completed.

[0045] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0046] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A high-purity fluororesin injection screw repair device based on laser cladding, characterized in that: It includes a laser cladding carrier and a laser cladding nozzle, the laser cladding nozzle is connected to the laser cladding carrier through a lifting connecting rod unit and is arranged directly above the laser cladding carrier, the upper end surface of the laser cladding carrier is provided with a cladding nozzle support platform, the laser cladding carrier is provided with a threaded hole in the horizontal direction, the threaded hole penetrates the laser cladding carrier and extends from one side wall of the laser cladding carrier to the other side wall, the upper end surface of the laser cladding carrier is provided with a first repair hole for the laser cladding nozzle to perform repair operations, and the four ends of the lower end surface of the laser cladding carrier are connected to vertically arranged sliders.

2. According to claim 1, a high-purity fluororesin injection screw repair device based on laser cladding is characterized in that: The lifting link unit includes a first link, a lifting rod and a third link, the two ends of the lifting rod are respectively movably connected to the first link and the third link, the other end of the first link is connected to the laser cladding nozzle, and the other end of the third link is connected to the laser cladding carrier.

3. The high-purity fluororesin injection screw repair device based on laser cladding according to claim 1 is characterized in that: The upper end surface of the cladding nozzle support platform is provided with a second repair hole for the laser cladding nozzle to perform repair operations.

4. The high-purity fluororesin injection screw repair device based on laser cladding according to claim 1 is characterized in that: A heat dissipation plate is arranged around the cladding nozzle support platform.

5. The high-purity fluororesin injection screw repair device based on laser cladding according to claim 4 is characterized in that: The heat dissipation plate is a hollow structure.

6. The high-purity fluororesin injection screw repair device based on laser cladding according to claim 1 is characterized in that: The laser cladding carrier is movably embedded on the fixed platform via a slider.

7. The high-purity fluororesin injection screw repair device based on laser cladding according to claim 6 is characterized in that: The fixed platform is provided with a group of parallel guide rails, and the sliders are movably embedded in the guide rails, so that the laser cladding carrier is horizontally displaced along the extension direction of the guide rails.

8. The high-purity fluororesin injection screw repair device based on laser cladding according to claim 6 is characterized in that: A three-jaw chuck and a screw fixing block are also provided on the fixed platform. The three-jaw chuck and the screw fixing block are arranged on the same horizontal line. A screw to be repaired is arranged between the three-jaw chuck and the screw fixing block. The screw to be repaired passes through the laser cladding carrier through the threaded hole and both ends are respectively fixed on the three-jaw chuck and the screw fixing block.

9. The high-purity fluororesin injection screw repair device based on laser cladding according to claim 8, characterized in that: A motor is arranged on one side of the screw fixing block away from the laser cladding carrier, and an output end of the motor passes through the screw fixing block and extends to the other side of the screw fixing block to connect with the screw to be repaired.

10. The high-purity fluororesin injection screw repair device based on laser cladding according to claim 8, characterized in that: One end of the screw rod to be repaired away from the screw rod fixing block is sleeved in a sleeve, and the sleeve is clamped in the three-jaw chuck.

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