Hollow nylon rod necking casting post cooling device

Abstract

The utility model discloses a kind of hollow nylon stick eccentric mouth casting post-cooling device, belong to cooling device technical field, including cooling box, the inside two sides of the cooling box are respectively equipped with adjusting clamping plate and positioning clamping plate, workpiece is fixed with between adjusting clamping plate and positioning clamping plate, the right side middle part of the positioning clamping plate is fixedly connected with centering station, cooling pipe is fixedly installed on the cooling box, the lower part of the cooling pipe is sequentially penetrated outer-tooth rotating disc, fixed base, threaded column and the middle part of centering station and extends to the middle hollow place of workpiece, the utility model is convenient for adapting different length workpiece and makes it rotary even cooling, positioning clamping block realizes the accurate fixing of hollow inner wall, avoid shaking, cooling pipe is penetrated to hollow place, form internal and external double cold structure in combination with top air pipe, effectively improve the uniformity of cooling, reduce the deformation cracking of workpiece, improve the technical effect of product quality and production efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of cooling devices, and in particular relates to a cooling device for hollow nylon rods after off-center casting. Background Technology

[0002] In modern industrial production, hollow nylon rods are widely used in many fields such as machinery manufacturing, electronics and electrical engineering, automotive industry, and aerospace due to their excellent properties such as light weight, high strength, self-lubrication, wear resistance, corrosion resistance, and insulation. "Off-center opening" refers to an asymmetrical opening structure at the end of a hollow nylon rod. It typically involves cutting an inclined or irregular cross-section radially at one (or both) end of the rod, creating an "off-center" end shape. Off-center hollow nylon rods, as a special type of nylon rod, play an indispensable role in scenarios where there are specific requirements for the installation angle and connection method of components.

[0003] Hollow nylon rods are typically produced using a casting process. In this process, pre-treated nylon raw material is injected into a specific mold and polymerized. The cast hollow nylon rod requires rapid and uniform cooling to ensure dimensional accuracy, internal structural stability, and surface quality. However, current cooling methods for hollow nylon rods after casting present several problems. Due to the hollow structure of the rod, traditional cooling methods struggle to meet the heat dissipation needs of both the inner and outer walls. External cooling media (such as water-cooled or air-cooled) preferentially cool the outer surface upon contact with the rod, resulting in a large temperature difference between the outside and inside. This causes uneven shrinkage rates in different parts of the nylon rod during cooling and contraction, leading to significant internal stress and ultimately deformation and cracking, severely impacting product quality and yield. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a cooling device for hollow nylon rods after casting with an off-center nozzle. It features easy adaptation to workpieces of different lengths, enabling uniform rotational cooling. Positioning clamps ensure precise fixation of the hollow inner wall, preventing shaking. Cooling pipes extend through the hollow portion, forming a double-cooling structure with the top air duct, effectively improving cooling uniformity, reducing workpiece deformation and cracking, and enhancing product quality and production efficiency. This solves the problem of uneven heat dissipation and large temperature differences between the inner and outer walls, leading to inconsistent shrinkage and rod deformation, thus affecting production efficiency, when using traditional cooling methods for hollow nylon rods.

[0005] This invention is implemented as follows: a cooling device for hollow nylon rods after off-center casting includes a cooling box. Adjusting clamps and positioning clamps are respectively installed on both sides of the interior of the cooling box. A workpiece is clamped and fixed between the adjusting clamps and the positioning clamps. A centering platform is fixedly connected to the middle right side of the positioning clamp. Positioning blocks arranged in a circular array are slidably connected to the centering platform. The centering platform extends into the hollow center of the workpiece, and the positioning blocks abut against the inner wall of the workpiece. A threaded post is fixedly connected to the middle left side of the centering platform. The outer wall of the threaded column is threaded with a transverse sliding cylinder. The end of the transverse sliding cylinder is connected to a rotating ring via a bearing. The rotating ring can drive the positioning clamp to move telescopically via a push-pull rod and a sliding plate. A fixed seat is fixedly connected to the left side of the threaded column. An external gear turntable is fixedly connected to the left side of the fixed seat. The external gear turntable is mounted on the left inner wall of the cooling box via a bearing. A cooling pipe is fixedly installed on the cooling box. The lower part of the cooling pipe passes through the middle of the external gear turntable, the fixed seat, the threaded column, and the centering platform in sequence, extending to the hollow middle part of the workpiece.

[0006] In a preferred embodiment of this invention, a rotating block is connected to the middle right side of the adjusting clamp via a bearing, and a telescopic cylinder is fixedly installed on the outer right side of the cooling box, with the output end of the telescopic cylinder being fixedly connected to the rotating block.

[0007] This design allows for easy left and right movement of the adjusting clamp, thus flexibly adjusting the distance between it and the positioning clamp to accommodate workpieces of different lengths. At the same time, the rotating block is connected to the bearing of the adjusting clamp, ensuring that the workpiece can still rotate with the positioning clamp when it is clamped, guaranteeing uniform cooling of the workpiece's outer surface and facilitating rapid cooling of the workpiece through all-around contact with the cold air.

[0008] In a preferred embodiment of this invention, a slide rail is provided through the centering platform in a uniformly distributed annular array. A slide plate is slidably connected to the slide rail. One end of the slide plate and the slide rail are fixedly connected by a spring. The other end of the slide plate is fixedly connected to a telescopic rod. The telescopic rod passes through the other end of the slide rail to the outside of the centering platform. The positioning clamp is fixedly connected to the outer end of the telescopic rod.

[0009] This design facilitates stable telescopic sliding of the slide plate and allows for synchronized elastic telescopic movement of the positioning clamps. This enables the positioning clamps to abut and fix workpieces with different inner diameters, providing flexibility and enabling precise positioning and stable support for hollow workpieces. It also prevents workpieces from shaking or shifting during cooling and ensures that the cooling medium is applied evenly to the workpiece.

[0010] As a preferred embodiment of this invention, the left side of the slide plate is hinged to one end of the push-pull rod, and the other end of the push-pull rod is fixedly connected to the circumferential side wall of the rotating ring.

[0011] With this setup, rotating the transverse cylinder can drive the rotating ring to move along the threaded column, and then the axial movement of the rotating ring is transmitted to the slide plate through the push-pull rod, so that multiple slide plates slide synchronously along the slide rail, thereby driving each positioning clamp to extend and retract simultaneously, so that the force exerted by the positioning clamp on the inner wall of the workpiece is evenly distributed, avoiding workpiece deformation and improving the convenience and accuracy of positioning adjustment.

[0012] In a preferred embodiment of this utility model, the external gear turntable, the fixed seat, the threaded column, and the centering platform are all provided with receiving holes in their middle parts, the lower part of the cooling pipe passes through the receiving holes, and the lower right end of the cooling pipe is open.

[0013] This design provides a through-hole for the cooling pipe, allowing it to reach the hollow part of the workpiece directly. The opening at its right end can directly deliver cold air to the inner wall of the hollow part, achieving targeted cooling of the workpiece's interior. This effectively solves the problem of external cooling and internal heating in hollow structures in traditional cooling methods, promotes a synchronous decrease in the internal and external temperatures of the workpiece, reduces internal stress, and improves production efficiency.

[0014] As a preferred embodiment of this utility model, the upper part of the cooling pipe is fixedly connected to a uniformly distributed air duct, the air duct being positioned above the workpiece, and a cold air fan is fixedly installed on the top of the cooling box, with the output end of the cold air fan fixedly connected to the cooling pipe.

[0015] With this setup, the cooling air provided by the air cooler is split through the cooling pipe. One part acts on the inside of the workpiece through the lower opening, while the other part is blown to the outer surface of the workpiece through the air duct, forming a composite cooling structure with internal and external cooling. This simultaneously takes into account the heat dissipation needs of the inner and outer walls of the workpiece, greatly improving cooling uniformity and efficiency, avoiding cracking and deformation defects caused by excessive temperature differences, and improving production efficiency.

[0016] As a preferred embodiment of this utility model, a motor is fixedly installed on the left outer wall of the cooling box, and the output end of the motor extends through the interior of the cooling box and is fixedly connected to a gear, which meshes with the external gear turntable.

[0017] With this setup, when the motor is running, it drives the external gear turntable to rotate via gears, which in turn drives the fixed base, threaded column, centering platform, and clamped workpiece to rotate synchronously. This facilitates all-round cooling of the outer surface by the air duct. Combined with the function of the internal cooling pipe, it ensures that the cooling rate of each part of the workpiece is consistent, thereby improving product quality.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: it is easy to adapt to workpieces of different lengths and make them rotate and cool evenly; the positioning clamps can accurately fix the hollow inner wall and avoid shaking; the cooling pipes penetrate into the hollow part and form an inner and outer double cooling structure with the top air duct, which effectively improves the uniformity of cooling, reduces the deformation and cracking of workpieces, improves product quality and production efficiency, and has high flexibility, strong adaptability and convenient operation. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural schematic diagram provided in an embodiment of the present utility model; Figure 2 This is a schematic diagram of the internal structure provided in an embodiment of the present utility model; Figure 3 This is a partial cross-sectional structural schematic diagram provided in an embodiment of the present utility model; Figure 4 This is a schematic diagram of the right side structure of the positioning clamp provided in this embodiment of the utility model; Figure 5 This is a schematic diagram of the disassembled positioning clamp structure provided in an embodiment of this utility model.

[0020] In the diagram: 1. Cooling box; 2. Adjusting clamp; 201. Rotating block; 202. Telescopic cylinder; 3. Positioning clamp; 301. Centering platform; 302. Slide rail; 4. Positioning clamp; 401. Telescopic rod; 402. Slide plate; 403. Spring; 404. Push-pull rod; 405. Rotary ring; 5. Threaded column; 501. Horizontal movement cylinder; 502. Fixed seat; 6. External gear turntable; 601. Gear; 602. Motor; 7. Cooling pipe; 701. Air cooler; 702. Air duct; 8. Receiving hole. Detailed Implementation

[0021] To further understand the utility model content, features and effects of this utility model, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0022] The structure of this utility model will now be described in detail with reference to the accompanying drawings.

[0023] refer to Figures 1 to 5As shown in the figure, a cooling device for hollow nylon rods after off-center casting is provided in this embodiment of the present invention. It includes a cooling box 1, with an adjusting clamp 2 and a positioning clamp 3 respectively installed on both sides of the interior of the cooling box 1. A workpiece is clamped and fixed between the adjusting clamp 2 and the positioning clamp 3. A centering platform 301 is fixedly connected to the middle right side of the positioning clamp 3. Positioning blocks 4, evenly distributed in a circular array, are slidably connected to the centering platform 301. The centering platform 301 extends into the hollow center of the workpiece, and the positioning blocks 4 abut against the inner wall of the workpiece. A threaded post 5 is fixedly connected to the middle left side of the centering platform 301. A transverse sliding cylinder 501 is threaded onto the outer wall. The end of the transverse sliding cylinder 501 is connected to a rotating ring 405 via a bearing. The rotating ring 405 can drive the positioning clamp 4 to move telescopically via a push-pull rod 404 and a sliding plate 402. A fixed seat 502 is fixedly connected to the left side of the threaded column 5. An external gear turntable 6 is fixedly connected to the left side of the fixed seat 502. The external gear turntable 6 is mounted on the left inner wall of the cooling box 1 via a bearing. A cooling pipe 7 is fixedly installed on the cooling box 1. The lower part of the cooling pipe 7 passes through the external gear turntable 6, the fixed seat 502, the threaded column 5, and the centering platform 301 in sequence, extending to the hollow part in the middle of the workpiece.

[0024] Specifically, a rotating block 201 is connected to the middle right side of the adjusting clamp 2 via a bearing, and a telescopic cylinder 202 is fixedly installed on the outer right side of the cooling box 1. The output end of the telescopic cylinder 202 is fixedly connected to the rotating block 201.

[0025] The above scheme facilitates the left and right movement of the adjusting clamp 2, thereby flexibly adjusting the distance between it and the positioning clamp 3 to accommodate workpieces of different lengths. At the same time, the rotating block 201 is connected to the bearing of the adjusting clamp 2, which allows the workpiece to rotate with the positioning clamp 3 when it is clamped, ensuring the uniformity of cooling of the outer surface of the workpiece and facilitating the workpiece to come into contact with the cold air from all directions for rapid cooling.

[0026] Specifically, the centering platform 301 is provided with slides 302 arranged in a circular array. A slide plate 402 is slidably connected to the slides 302. The slide plate 402 and one end of the slides 302 are fixedly connected by a spring 403. The other end of the slide plate 402 is fixedly connected to a telescopic rod 401. The telescopic rod 401 passes through the other end of the slides 302 to the outside of the centering platform 301. The positioning clamp 4 is fixedly connected to the outer end of the telescopic rod 401.

[0027] The above scheme facilitates the stable telescopic sliding of the slide plate 402 and enables the positioning clamp 4 to move synchronously and elastically. This allows the positioning clamp 4 to abut and fix workpieces with different inner diameters, making it flexible to use and achieving precise positioning and stable support for hollow workpieces. It also prevents workpieces from shaking or shifting during cooling and ensures that the cooling medium can be applied evenly to the workpiece.

[0028] Specifically, the left side of the slide plate 402 is hinged to one end of the push-pull rod 404, and the other end of the push-pull rod 404 is fixedly connected to the circumferential side wall of the rotating ring 405.

[0029] Using the above scheme, when the transverse cylinder 501 is rotated, the rotating ring 405 can be moved along the threaded column 5. Then, the axial movement of the rotating ring 405 is transmitted to the slide plate 402 through the push-pull rod 404, so that multiple slide plates 402 slide synchronously along the slide rail 302, thereby driving each positioning clamp 4 to extend and retract simultaneously. This makes the force exerted by the positioning clamp 4 on the inner wall of the workpiece evenly distributed, avoids workpiece deformation, and improves the convenience and accuracy of positioning adjustment.

[0030] Specifically, the external gear turntable 6, the fixed seat 502, the threaded column 5 and the centering platform 301 are all provided with receiving holes 8 in the middle. The lower part of the cooling pipe 7 passes through the receiving hole 8, and the lower right end of the cooling pipe 7 is open.

[0031] Using the above scheme, the receiving hole 8 provides a through channel for the cooling pipe 7, allowing the cooling pipe 7 to reach the hollow part of the workpiece directly. Its right end opening can directly deliver cold air to the hollow inner wall, achieving targeted cooling of the workpiece's interior. This effectively solves the problem of external cold and internal heat in hollow structures in traditional cooling methods, promotes the synchronous decrease of internal and external temperatures of the workpiece, reduces internal stress generation, and improves production efficiency.

[0032] Specifically, the upper part of the cooling pipe 7 is fixedly connected to a uniformly distributed air duct 702, the air duct 702 is located above the workpiece, and a cold air fan 701 is fixedly installed on the top of the cooling box 1, the output end of the cold air fan 701 is fixedly connected to the cooling pipe 7.

[0033] Using the above solution, the cooling air provided by the air cooler 701 is split by the cooling pipe 7. One part acts on the inside of the workpiece through the lower opening, and the other part is blown to the outer surface of the workpiece through the air pipe 702, forming a composite cooling structure with internal and external dual cooling. At the same time, it takes into account the heat dissipation requirements of the inner and outer walls of the workpiece, greatly improving the cooling uniformity and efficiency, avoiding cracking and deformation defects caused by excessive temperature difference, and improving production efficiency.

[0034] Specifically, a motor 602 is fixedly installed on the left outer wall of the cooling box 1. The output end of the motor 602 extends into the interior of the cooling box 1 and is fixedly connected to a gear 601. The gear 601 and the external gear turntable 6 are meshed together.

[0035] With the above scheme, when the motor 602 is running, it drives the external gear turntable 6 to rotate through the gear 601, which in turn drives the fixed seat 502, threaded column 5, centering platform 301 and the clamped workpiece to rotate synchronously, which facilitates the air duct 702 to cool its outer surface in all directions. In conjunction with the function of the internal cooling pipe 7, it ensures that the cooling rate of each part of the workpiece is consistent, thus improving product quality.

[0036] The working principle of this utility model: In use, firstly, the workpiece is placed between the adjusting clamp 2 and the positioning clamp 3. The telescopic cylinder 202 drives the adjusting clamp 2 to move, cooperating with the positioning clamp 3 to complete the workpiece clamping. Rotating the transverse cylinder 501 causes the rotating ring 405 to drive the push-pull rod 404, causing the positioning clamp 4 to extend and retract and press against the hollow inner wall of the workpiece, achieving precise centering. During cooling, the cold air generated by the air cooler 701 is split through the cooling pipe 7. One part enters the hollow part of the workpiece through the lower opening, and the other part is blown to the outer surface of the workpiece through the air pipe 702, forming double cooling inside and outside. At the same time, the motor 602 drives the external gear turntable 6 to rotate through the gear 601, causing the workpiece to rotate synchronously, ensuring that the cold air is evenly applied to all parts of the workpiece and the off-center opening. This device achieves stable workpiece clamping, synchronous internal and external cooling, and all-round heat dissipation, ultimately achieving the purpose of reducing deformation and improving efficiency.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cooling device for hollow nylon rods after off-center casting, comprising a cooling box (1), characterized in that: The cooling box (1) has an adjusting clamp (2) and a positioning clamp (3) installed on its inner sides respectively. A workpiece is clamped and fixed between the adjusting clamp (2) and the positioning clamp (3). A centering platform (301) is fixedly connected to the middle right side of the positioning clamp (3). A positioning clamp (4) is slidably connected to the centering platform (301) in a circular array. The centering platform (301) is inserted into the hollow middle part of the workpiece. The positioning clamp (4) is pressed against the inner wall of the workpiece. A threaded column (5) is fixedly connected to the middle left side of the centering platform (301). A transverse moving cylinder (501) is threaded onto the outer wall of the threaded column (5). The end of the threaded column (5) is connected to a rotating ring (405) via a bearing. The rotating ring (405) can drive the positioning clamp (4) to move telescopically via a push-pull rod (404) and a sliding plate (402). A fixed seat (502) is fixedly connected to the left side of the threaded column (5). An external gear turntable (6) is fixedly connected to the left side of the fixed seat (502). The external gear turntable (6) is installed on the left inner wall of the cooling box (1) via a bearing. A cooling pipe (7) is fixedly installed on the cooling box (1). The lower part of the cooling pipe (7) passes through the external gear turntable (6), the fixed seat (502), the threaded column (5), and the centering platform (301) in sequence, extending to the hollow part of the workpiece.

2. The cooling device for hollow nylon rods after off-center casting as described in claim 1, characterized in that: The right middle part of the adjusting clamp (2) is connected to a rotating block (201) via a bearing, and a telescopic cylinder (202) is fixedly installed on the right outer wall of the cooling box (1). The output end of the telescopic cylinder (202) is fixedly connected to the rotating block (201).

3. The cooling device for hollow nylon rods after off-center casting as described in claim 1, characterized in that: The centering platform (301) is provided with a slide rail (302) that is evenly distributed in a ring array. A slide plate (402) is slidably connected to the slide rail (302). The slide plate (402) and one end of the slide rail (302) are fixedly connected by a spring (403). The other end of the slide plate (402) is fixedly connected to a telescopic rod (401). The telescopic rod (401) passes through the other end of the slide rail (302) to the outside of the centering platform (301). The positioning clamp (4) and the outer end of the telescopic rod (401) are fixedly connected.

4. The cooling device for hollow nylon rods after off-center casting as described in claim 3, characterized in that: The left side of the slide plate (402) is hinged to one end of the push-pull rod (404), and the other end of the push-pull rod (404) is fixedly connected to the circumferential side wall of the rotating ring (405).

5. The cooling device for hollow nylon rods after off-center casting as described in claim 1, characterized in that: The external gear turntable (6), the fixed seat (502), the threaded column (5) and the centering platform (301) are all provided with receiving holes (8) in the middle. The lower part of the cooling pipe (7) passes through the receiving hole (8) and the lower right end of the cooling pipe (7) is open.

6. The cooling device for hollow nylon rods after off-center casting as described in claim 1, characterized in that: The upper part of the cooling pipe (7) is fixedly connected to a uniformly distributed air duct (702), the air duct (702) is located above the workpiece, and a cold air fan (701) is fixedly installed on the top of the cooling box (1), the output end of the cold air fan (701) is fixedly connected to the cooling pipe (7).

7. The cooling device for hollow nylon rods after off-center casting as described in claim 1, characterized in that: A motor (602) is fixedly installed on the left outer wall of the cooling box (1). The output end of the motor (602) extends into the interior of the cooling box (1) and is fixedly connected to a gear (601). The gear (601) and the external gear turntable (6) are meshed together.

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