A quick core-pulling mechanism for a silicone tube of a car

Abstract

This disclosure relates to the field of silicone tube processing technology. One embodiment of this disclosure provides a rapid core-pulling mechanism for automotive silicone tubes, comprising: a frame and a base frame. The base frame is disposed at the bottom of the frame, and a core-pulling assembly is disposed on the frame and the base frame. The core-pulling assembly includes several pairs of push shafts, each rotatably connected to the frame. Each push shaft is fitted with a push wheel, and the top of the push wheel has a top groove. A fixing pin is inserted between the top groove and the push shaft. An inner push rod is disposed on the frame, and each pair of push shafts has a transmission gear at its lower end, with the opposing transmission gears meshing. A main shaft is disposed in the base frame, and the main shaft rotates under electrical control. This technical solution solves the problem in the prior art where excessive clamping force easily causes indentations, deformation, or even breakage on the outer wall of the silicone tube, especially for thin-walled or high-precision silicone tubes, which can directly lead to product scrap.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of silicone tube processing technology, and more specifically, to a quick core-pulling mechanism for automotive silicone tubes. Background Technology

[0002] In the production of automotive silicone tubing, the core-pulling process is a crucial step in ensuring product quality. It involves quickly pulling out the core after wrapping the inner silicone tubing containing the core with copper-plated steel wire. In existing technology, the rapid core-pulling mechanism for automotive silicone tubing (publication number CN218366007U) uses a handwheel, transmission sprocket, and chain to drive the adjusting screw, causing the positioning transmission block to slide and clamp silicone tubing of different diameters. While this achieves adaptive diameter adjustment, it reveals significant shortcomings in practical applications. This mechanism relies on manual rotation of the adjusting handwheel to control the clamping force, which is difficult to precisely quantify. Excessive clamping force can easily cause indentations, deformation, or even breakage on the outer wall of the silicone tubing, especially for thin-walled or high-precision silicone tubing, directly leading to product scrap. Insufficient clamping force can cause axial sliding or radial displacement of the silicone tubing during core-pulling, affecting efficiency and potentially causing core-pulling failure due to core jamming, requiring repeated operations.

[0003] The production of automotive silicone hoses is mostly carried out on large-scale assembly lines. Manual adjustment of clamping force is inefficient and difficult to match the pace of automated production. Furthermore, differences in the force application habits of different operators can lead to inconsistent clamping quality, increasing the difficulty of quality control during the production process. Therefore, developing a core-pulling mechanism with automatic feedback adjustment of clamping force has become an urgent need to address the shortcomings of existing technologies and improve the production quality and efficiency of automotive silicone hoses. Utility Model Content

[0004] To overcome the above-mentioned defects, the embodiments of this disclosure provide a quick core-pulling mechanism for automotive silicone tubes, which solves the technical problem that when the clamping force is too large, the outer wall of the silicone tube is prone to indentation, deformation or even cracking, especially for thin-walled or high-precision silicone tubes, which will directly lead to product scrap.

[0005] According to one aspect, at least one embodiment of this disclosure provides a quick core-pulling mechanism for automotive silicone tubes, comprising: A platform and a base frame, wherein the base frame is disposed at the bottom of the platform; A core-pulling assembly, wherein the core-pulling assembly is disposed on the platform and the base frame; The core-pulling assembly includes several pairs of push shafts, each of which is rotatably connected to the frame. Each push shaft is fitted with a push wheel, and the top of each push wheel has a top groove. A fixing pin is inserted between the top groove and the push shaft. An inner push rod is provided on the frame.

[0006] As a further technical solution, each of the two pairs of propulsion shafts is provided with a transmission gear at its lower end, and the opposing transmission gears mesh with each other. A main shaft is provided in the base frame, and the main shaft rotates under electric control.

[0007] As a further technical solution, each of the main shafts is provided with a drive gear, and several of the propulsion shafts on one side are provided with driven gears at their lower ends. The drive gears mesh with the corresponding driven gears, and a pair of sleeves are provided on the surface of the frame.

[0008] As a further technical solution, a fixed seat is vertically inserted and connected between the sleeves, the inner push rod is fixed to the side surface of the fixed seat, the inner push rod is located between the propulsion wheels, and a fixing block is provided at both ends of the platform surface.

[0009] As a further technical solution, a movable frame is connected to the movable assembly inside the fixed block, and a fixed sleeve is provided on the side end face of the movable frame. The fixed sleeve is fitted onto the surface of the inner push rod, and a pair of springs are fitted on each movable frame.

[0010] As a further technical solution, the sleeve has an overall C-shaped structure, and the sleeve is wrapped around both sides of the fixing base.

[0011] As a further technical solution, a positioning sleeve is provided on the surface of the platform, and the side end face of the positioning sleeve has an arc-shaped transition structure. The positioning sleeve and the inner push rod are located on the same axis.

[0012] As a further technical solution, the surface of the propulsion wheel is an arc-shaped concave structure, and the surface of the concave part of the propulsion wheel is an anti-slip structure with high friction.

[0013] The beneficial effects of the embodiments disclosed herein are as follows: In this disclosure, the core-pulling assembly achieves synchronous rotation of multiple sets of push wheels through the meshing of the push shaft and transmission gears. This ensures a uniform distribution of pushing force on the silicone tube, avoiding the inaccuracy problem of traditional manual adjustment of clamping force. The arc-shaped concave anti-slip structure on the surface of the push wheels fits tightly against the outer wall of the silicone tube, increasing the contact area while providing stable friction. This effectively pushes the silicone tube without causing indentations or deformation of the tube wall due to excessive local pressure. It solves the technical problem of product scrapping caused by excessive clamping force, improving the stability of the core-pulling process and the product qualification rate. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0015] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure; Figure 2 This is an isometric drawing of the present disclosure; Figure 3 This is an isometric sectional view of the present disclosure; Figure 4 Appendix to this disclosure Figure 2 Enlarged view of part A in the middle; In the diagram: 1. Platform; 2. Base frame; 3. Core pulling assembly; 3-1. Push shaft; 3-2. Push wheel; 3-3. Top groove; 3-4. Fixing pin; 3-5. Inner push rod; 3-6. Transmission gear; 3-7. Main shaft; 3-8. Drive gear; 3-9. Driven gear; 3-10. Sleeve; 3-11. Fixed seat; 3-12. Fixing block; 3-13. Movable frame; 3-14. Fixed sleeve; 3-15. Spring; 4. Positioning sleeve. Detailed Implementation

[0016] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0017] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0018] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0019] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0020] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to 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 disclosure.

[0021] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] like Figures 1-4 As shown, it illustrates a quick-pull mechanism for automotive silicone tubes according to an embodiment of this disclosure, comprising: A platform 1 and a base frame 2, wherein the base frame 2 is disposed at the bottom of the platform 1; Core-pulling assembly 3, which is disposed on the platform 1 and the base frame 2; The core-pulling assembly 3 includes several pairs of push shafts 3-1, each rotatably connected to the frame 1. Each push shaft is fitted with a push wheel 3-2, and the top of each push wheel 3-2 has a top groove 3-3. A fixing pin 3-4 is inserted between the top groove 3-3 and the push shaft. An inner push rod 3-5 is provided on the frame 1. Each pair of push shafts has a transmission gear 3-6 at its lower end, and the opposing transmission gears 3-6 mesh with each other. A main shaft 3-7 is provided in the base frame 2, and the main shaft 3-7 rotates under electric control. Each main shaft 3-7 has a drive gear 3-8, and several push shafts on one side have driven gears at their lower ends. 3-9, the driving gear 3-8 meshes with the corresponding driven gear 3-9, a pair of sleeves 3-10 are provided on the surface of the frame 1, a fixed seat 3-11 is vertically inserted and connected between the sleeves 3-10, the inner push rod 3-5 is fixed on the side surface of the fixed seat 3-11, the inner push rod is located between the propulsion wheels 3-2, a fixed block 3-12 is provided at both ends of the surface of the frame 1, a movable frame 3-13 is movably connected inside the fixed block 3-12, a fixed sleeve 3-14 is provided on the side end face of the movable frame 3-13, the fixed sleeve 3-14 is fitted on the surface of the inner push rod 3-5, a pair of springs 3-15 are fitted on each of the movable frames 3-13.

[0023] In some examples, in order to achieve a highly efficient push-type core pulling effect, a core pulling assembly 3 is designed. This assembly includes several pairs of push shafts 3-1 that are rotatably connected to the frame 1 as the basic component for power transmission. The push wheel 3-2 mounted on it is the main part that directly acts on the silicone tube for pushing. The top groove 3-3 opened on the top of the push wheel 3-2 is connected to the push shaft by a fixing pin 3-4 to ensure that the push wheel 3-2 rotates synchronously with the push shaft, avoids slippage, and the fixing pin 3-4 can be removed to replace the push wheel 3-2 of different specifications.

[0024] The main shaft 3-7 in the base frame 2 is electrically controlled to rotate. Its drive gear 3-8 meshes with the driven gear 3-9 at the lower end of some of the propulsion shafts, transmitting power from the main shaft 3-7 to the propulsion shafts. Simultaneously, the transmission gears 3-6 at the lower ends of two pairs of propulsion shafts 3-1 mesh with each other, enabling power transmission between the propulsion shafts and achieving coordinated rotation of multiple propulsion wheels 3-2. When the main shaft 3-7 starts, the drive gear 3-8 drives the driven gear 3-9, causing the propulsion shafts and propulsion wheels 3-2 to rotate. The synchronous rotation of multiple propulsion wheels 3-2 generates forward thrust.

[0025] A sleeve 3-10 mounted on the surface of the platform 1 is vertically connected to a fixed seat 3-11. The fixed seat 3-11, fixed to the side surface of the inner push rod 3-5, ensures the stability of the inner push rod 3-5. The inner push rod 3-5 is located between the push wheels 3-2, providing internal support for the silicone tube and preventing deformation of the silicone tube during core extraction. A movable frame 3-13 is movably mounted inside the fixed blocks 3-12 at both ends of the platform 1. The fixed sleeve 3-14 on its side end is fitted onto the surface of the inner push rod 3-5, allowing the movable frame 3-13 to move along the inner push rod 3-5. A pair of springs 3-15 mounted on the movable frame 3-13 are used to support the fixed sleeve 3-14 to be tightly fitted onto the surface of the inner push rod 3-5, ensuring smooth pushing and avoiding damage to the silicone tube due to excessive pushing force. Finally, through the linkage of multiple components, the core inside the silicone tube is extracted by pushing, efficiently completing the core extraction operation.

[0026] For example, such as Figure 2 As shown, the sleeve 3-10 has an overall C-shaped structure, and the sleeve 3-10 is wrapped around both sides of the fixing base 3-11.

[0027] In some examples, the sleeve 3-10 has a C-shaped structure and fits snugly against both sides of the fixing seat 3-11, providing a stable yet flexible installation method for the fixing seat 3-11. The C-shaped opening structure facilitates the quick installation of the sleeve 3-10 onto the fixing seat 3-11. After installation, the two sides of the sleeve 3-10 fit tightly against the fixing seat 3-11, increasing the contact area and enhancing the clamping force on the fixing seat 3-11, effectively preventing the fixing seat 3-11 from shaking or shifting during the core pulling process. At the same time, the elastic deformation capability of the C-shaped structure allows the sleeve 3-10 to adapt to minor deviations of the fixing seat 3-11 to a certain extent, ensuring that the fixing seat 3-11 always remains in the correct position, thereby ensuring the stability of the inner push rod 3-5 and providing reliable support for the precise advancement of the core pulling operation.

[0028] For example, such as Figure 2 As shown, a positioning sleeve 4 is provided on the surface of the platform 1. The side end face of the positioning sleeve 4 has an arc-shaped transition structure. The positioning sleeve 4 and the inner push rod 3-5 are located on the same axis.

[0029] In some examples, the positioning sleeve 4 and the inner push rod 3-5 on the surface of the frame 1 are located on the same axis, and the side end face adopts an arc-shaped transition structure. This design plays a key role in improving the core-pulling accuracy and stability. The coaxial arrangement of the positioning sleeve 4 and the inner push rod 3-5 provides a precise positioning reference for the inner push rod 3-5, ensuring that the inner push rod 3-5 always maintains a straight line movement during the advancement process, avoiding damage to the silicone tube due to uneven force caused by deviation. The arc-shaped transition side end face structure can effectively guide the silicone tube to smoothly enter the core-pulling working area, reducing friction and resistance between the silicone tube and the positioning sleeve 4, preventing scratches on the surface of the silicone tube. This structure can also buffer the impact force when the silicone tube enters to a certain extent, making the core-pulling process smoother and improving the overall working efficiency and reliability of the core-pulling mechanism.

[0030] For example, such as Figure 1 As shown, the surface of the propulsion wheel 3-2 has an arc-shaped concave structure around its circumference, and the concave part of the propulsion wheel 3-2 has a non-slip structure with high friction.

[0031] In some examples, the surface of the push wheel 3-2 features a concave arc-shaped structure around its circumference, with the concave portion serving as a high-friction, anti-slip surface. This design significantly enhances the pushing effect of the push wheel 3-2 on the silicone tube. The concave arc structure perfectly conforms to the outer surface of the silicone tube, increasing the contact area between them. This allows the thrust applied by the push wheel 3-2 to be distributed more evenly on the silicone tube, preventing excessive localized stress that could cause deformation. The anti-slip surface further increases the friction between the push wheel 3-2 and the silicone tube, preventing slippage during the pushing process and ensuring the silicone tube moves stably forward under the drive of the push wheel 3-2. This efficiently completes the core-pulling operation. This structural design not only improves core-pulling efficiency but also ensures the integrity of the silicone tube and the quality of the core-pulling process.

[0032] In actual use: Fix the platform 1 in the working area, install the base frame 2 at the bottom of the platform 1, and place the automotive silicone tube to be extracted between the push wheels 3-2, aligning the axis of the silicone tube with the axis of the inner push rod 3-5. Start the main shaft 3-7 in the base frame 2, electrically drive the main shaft 3-7 to rotate, the drive gear 3-8 on the main shaft 3-7 drives the driven gear 3-9 to rotate, and through the transmission gear 3-6, cause several pairs of push shafts 3-1 to rotate synchronously, the push wheels 3-2 on the push shafts rotate accordingly, their arc-shaped concave anti-slip surfaces fit against the outer wall of the silicone tube, generating a forward pushing force. At the same time, the fixed seat 3-11 on the platform 1 is vertically positioned by the sleeve 3-10, the inner push rod 3-5 is inserted into the silicone tube to provide support, the movable frame 3-13 slides in the fixed block 3-12, and the elastic force of the spring 3-15 adjusts the clamping force of the fixed sleeve 3-14 on the inner push rod 3-5, ensuring that the inner push rod 3-5 stably supports the silicone tube without applying excessive pressure. With the continuous pushing of the propulsion wheel 3-2, the core inside the silicone tube is gradually extracted, completing the core extraction operation.

[0033] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A quick-pull mechanism for automotive silicone tubing, characterized in that, include: A platform (1) and a base frame (2), wherein the base frame (2) is disposed at the bottom of the platform (1); A core-pulling assembly (3) is disposed on the platform (1) and the base frame (2); The core-pulling assembly (3) includes several pairs of push shafts (3-1), each of which is rotatably connected to the frame (1). Each push shaft (3-1) is fitted with a push wheel (3-2), and the top of the push wheel (3-2) is provided with a top groove (3-3). A fixing pin (3-4) is inserted between the top groove (3-3) and the push shaft (3-1). An inner push rod (3-5) is provided on the frame (1).

2. The quick core-pulling mechanism for automotive silicone tubes according to claim 1, characterized in that, Both of the two pairs of propulsion shafts (3-1) are provided with transmission gears (3-6) at their lower ends, and the opposing transmission gears (3-6) mesh with each other. The base frame (2) is provided with a main shaft (3-7), which is rotated by electric control.

3. The quick core-pulling mechanism for automotive silicone tubes according to claim 2, characterized in that, Each of the main shafts (3-7) is provided with a drive gear (3-8), and each of the several propulsion shafts (3-1) on one side is provided with a driven gear (3-9) at its lower end. The drive gear (3-8) meshes with the corresponding driven gear (3-9), and a pair of sleeves (3-10) are provided on the surface of the frame (1).

4. The quick core-pulling mechanism for automotive silicone tubes according to claim 3, characterized in that, A fixed base (3-11) is vertically inserted and connected between the sleeves (3-10). The inner push rod (3-5) is fixed to the side surface of the fixed base (3-11). The inner push rod (3-5) is located between the push wheels (3-2). Fixed blocks (3-12) are provided at both ends of the surface of the platform (1).

5. The quick core-pulling mechanism for automotive silicone tubes according to claim 4, characterized in that, The fixed block (3-12) is movably connected to the movable frame (3-13). The movable frame (3-13) has a fixed sleeve (3-14) on its side end face. The fixed sleeve (3-14) is fitted onto the surface of the inner push rod (3-5). A pair of springs (3-15) are fitted onto each movable frame (3-13).

6. The quick core-pulling mechanism for automotive silicone tubes according to claim 4, characterized in that, The sleeve (3-10) has a C-shaped structure and is wrapped around both sides of the fixing base (3-11).

7. The quick core-pulling mechanism for automotive silicone tubes according to claim 1, characterized in that, The platform (1) is provided with a positioning sleeve (4) on its surface. The side end face of the positioning sleeve (4) is an arc-shaped transition structure. The positioning sleeve (4) and the inner push rod (3-5) are located on the same axis.

8. The quick core-pulling mechanism for automotive silicone tubes according to claim 1, characterized in that, The surface of the propulsion wheel (3-2) is an arc-shaped concave structure, and the surface of the concave part of the propulsion wheel (3-2) is an anti-slip structure.

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