A bent pipe core-pulling structure

Abstract

The utility model relates to a kind of elbow core-pulling structure, including positioning block, core-pulling oil cylinder, transmission head and core-pulling seat, the positioning block has two, it is symmetrically arranged, right upper portion between two is installed with core-pulling oil cylinder, main shaft is inclined to left lower portion, the main shaft of the core-pulling oil cylinder is installed with transmission head, the transmission head is located in the middle lower portion between two positioning blocks, and it is obliquely moved with main shaft telescopic, the upper portion between two positioning blocks is installed with core-pulling seat, the core-pulling seat is installed with the circular arc core-pulling of upper end arc shape, the front and back sides of the core-pulling seat are evenly provided with arc convex strip, the positioning block opposite side is provided with the arc-shaped trajectory groove matched with arc convex strip.The utility model has the characteristics of improving service life, improving structural stability, simplifying assembly steps and ensuring smooth core-pulling.

Description

Technical Field

[0001] This utility model relates to the field of core-pulling structure technology, and in particular to a bent tube core-pulling structure. Background Technology

[0002] Conventional pipe bending core pulling usually chooses a rotary structure as the core pulling body. However, rotary structures typically require a central shaft as the main transmission component. This central shaft experiences the greatest torque during operation and needs to work continuously, which reduces the service life of the central shaft and affects the stability of the core pulling structure. To solve the above technical problems, this type of core pulling needs to be improved. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a bent tube core-pulling structure, which has the characteristics of improving service life, improving structural stability, simplifying assembly steps, and ensuring smooth core pulling.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a bending pipe core-pulling structure is provided, including a positioning block, a core-pulling cylinder, a transmission head, and a core-pulling seat. There are two positioning blocks, which are arranged symmetrically front and back. A core-pulling cylinder with its main shaft tilted to the lower left is installed on the upper right part between the two positioning blocks. A transmission head is installed on the main shaft of the core-pulling cylinder. The transmission head is located in the lower middle part between the two positioning blocks and moves obliquely with the extension and retraction of the main shaft. A core-pulling seat is installed at the upper part between the two positioning blocks. An arc-shaped core-pulling device with an arc-shaped upper end is installed on the core-pulling seat. Arc-shaped protrusions are provided on the front and rear sides of the core-pulling seat. An arc-shaped track groove matching the arc-shaped protrusions is provided on the opposite side of the positioning block. A connecting rod is installed between the transmission head and the core-pulling seat. The two ends of the connecting rod are connected to the transmission head or the core-pulling seat through a central shaft.

[0005] In this technical solution, a core-pulling cylinder is installed to drive the transmission head to make a tilting linear movement. At the same time, an arc-shaped protrusion and an arc-shaped track groove are set to realize the arc sliding of the core-pulling seat. A connecting rod is installed between the transmission head and the core-pulling seat to facilitate the operation of the core-pulling cylinder to drive the core-pulling seat. The connecting rod is used to facilitate the conversion of linear sliding into arc sliding, so that the arc-shaped core can be released from the product.

[0006] The main transmission components of this technical solution are on the connecting rod and the central shaft. At the same time, the arc-shaped protrusion and the arc-shaped track groove form a secondary positioning, which can not only reduce the external force on the connecting rod and the central shaft, thereby improving the service life of the structure, but also improve the structural stability during operation.

[0007] As a supplement to this technical solution, the front and rear sides of the transmission head are provided with inclined protrusions parallel to the core-pulling cylinder, and the opposite side of the positioning block is provided with an inclined trajectory groove matching the inclined protrusions.

[0008] This technical solution uses inclined protrusions and tilted track grooves to further stabilize the operation of the transmission head and improve the stability of the structure.

[0009] As a supplement to this technical solution, the upper part of the arc core puller is provided with an arc-shaped insert that bends to the left at the upper end, and the arc-shaped protrusion and the arc-shaped track groove both adopt an arc-shaped structure that bends to the left at the lower end.

[0010] In this technical solution, the bending direction of the arc core-pulling mechanism is determined, and the bending direction of the arc-shaped trajectory groove is also determined, thereby ensuring the normal operation of the core-pulling structure.

[0011] As a supplement to this technical solution, the upper left part of the transmission head and the lower right part of the core-pulling seat are both provided with a centrally located docking insertion notch, and both ends of the connecting rod are inserted into the docking insertion notch.

[0012] As a supplement to this technical solution, a bearing structure is embedded in the front and rear sides of the upper left part of the transmission head and the lower right part of the core-pulling seat, and both ends of the central shaft are inserted into the inner ring of the corresponding bearing structure.

[0013] This technical solution improves the operational stability of the central shaft and extends its service life by installing a bearing structure.

[0014] As a supplement to this technical solution, snap ring structures are installed at both ends of the central shaft to abut against the bearing structure. The snap ring structures are used to limit the position of the bearing structure.

[0015] Beneficial effects: This utility model relates to a bending tube core-pulling structure. A core-pulling cylinder is installed to drive the transmission head in a tilting linear motion. Simultaneously, an arc-shaped protrusion and an arc-shaped track groove are used to achieve arc-shaped sliding of the core-pulling seat. A connecting rod is installed between the transmission head and the core-pulling seat to facilitate the operation of the core-pulling cylinder. The connecting rod facilitates the conversion of linear sliding into arc-shaped sliding, thereby enabling the arc-shaped core to be released from the product. This structure features improved service life, enhanced structural stability, simplified assembly steps, and ensured smooth core pulling. Attached Figure Description

[0016] Figure 1 This is the front view of this utility model;

[0017] Figure 2 This is a top view of the present invention;

[0018] Figure 3 This is a utility model Figure 2 Sectional view along the A-A direction;

[0019] Figure 4 This is a structural view of the transmission head and core-pulling seat described in this utility model;

[0020] Figure 5 This is a structural view of the present invention after demolding.

[0021] Illustration: 1. Positioning block, 2. Core-pulling cylinder, 3. Product, 4. Transmission head, 5. Core-pulling seat, 6. Connecting rod, 7. Arc-shaped core-pulling, 8. Arc-shaped track groove, 9. Inclined track groove, 10. Diagonal protrusion, 11. Arc-shaped protrusion, 12. Bearing structure, 13. Central shaft. Detailed Implementation

[0022] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0023] The embodiments of this utility model relate to a bent tube core-pulling structure, such as... Figure 1 — Figure 5 As shown, the system includes a positioning block 1, a core-pulling cylinder 2, a transmission head 4, and a core-pulling seat 5. There are two positioning blocks 1 arranged symmetrically front and back. The core-pulling cylinder 2, with its main shaft tilted downwards to the left, is installed on the upper right part between the two blocks. The transmission head 4 is installed on the main shaft of the core-pulling cylinder 2. The transmission head 4 is located in the lower middle part between the two positioning blocks 1 and moves obliquely with the extension and retraction of the main shaft. The core-pulling seat 5 is installed at the upper part between the two positioning blocks 1. The core-pulling seat 5 is equipped with an arc-shaped core-pulling device 7 with an arc-shaped upper end. Arc-shaped protrusions 11 are provided on both the front and rear sides of the core-pulling seat 5. An arc-shaped track groove 8 matching the arc-shaped protrusions 11 is provided on the opposite side of the positioning block 1. A connecting rod 6 is installed between the transmission head 4 and the core-pulling seat 5. The two ends of the connecting rod 6 are connected to the transmission head 4 or the core-pulling seat 5 through a central shaft 13.

[0024] In this technical solution, a core-pulling cylinder 2 is installed to drive the transmission head 4 to perform a tilting linear movement. At the same time, an arc-shaped protrusion 11 and an arc-shaped track groove 8 are set to realize the arc sliding of the core-pulling seat 5. A connecting rod 6 is installed between the transmission head 4 and the core-pulling seat 5 to facilitate the operation of the core-pulling cylinder 2 driving the core-pulling seat 5. The connecting rod 6 is used to facilitate the conversion of linear sliding into arc sliding, so that the arc-shaped core puller 7 can be released from the product 3.

[0025] The main transmission components of this technical solution are on the connecting rod 6 and the central shaft 13. At the same time, the arc-shaped protrusion 11 and the arc-shaped track groove 8 form a secondary positioning, which can reduce the external force on the connecting rod 6 and the central shaft 13, thereby improving the service life of the structure and improving the structural stability during operation.

[0026] As a supplement to this technical solution, the front and rear sides of the transmission head 4 are provided with inclined bar protrusions 10 parallel to the core-pulling cylinder 2, and the opposite side of the positioning block 1 is provided with inclined trajectory grooves 9 that match the inclined bar protrusions 10.

[0027] In this technical solution, the inclined strip protrusion 10 and the inclined track groove 9 are set to further stabilize the operation of the transmission head 4 and improve the stability of the structure.

[0028] As a supplement to this technical solution, the upper part of the arc core-pulling device 7 is provided with an arc-shaped insert that bends to the left at the upper end, and the arc-shaped protrusion 11 and the arc-shaped track groove 8 both adopt an arc-shaped structure that bends to the left at the lower end.

[0029] In this technical solution, the bending direction of the arc-shaped core-pulling 7 and the bending direction of the arc-shaped trajectory groove 8 are determined, thereby ensuring the normal operation of the core-pulling structure.

[0030] As a supplement to this technical solution, the upper left part of the transmission head 4 and the lower right part of the core-pulling seat 5 are both provided with a docking insertion notch located in the center, and both ends of the connecting rod 6 are inserted into the docking insertion notch.

[0031] As a supplement to this technical solution, a bearing structure 12 is embedded in the front and rear sides of the upper left part of the transmission head 4 and the lower right part of the core-pulling seat 5, and both ends of the central shaft 13 are inserted into the inner ring of the corresponding bearing structure 12.

[0032] In this technical solution, the installation of bearing structure 12 improves the operational stability of the central shaft 13 and also extends its service life.

[0033] As a supplement to this technical solution, a retaining ring structure is installed at both ends of the central shaft 13 to abut against the bearing structure 12. The retaining ring structure is used to limit the position of the bearing structure 12.

[0034] Example

[0035] When using this core-pulling structure, the mold must first be closed. After mold closure, the core-pulling structure will appear as follows: Figure 1 and Figure 2As shown, at this time, the main shaft of the core-pulling cylinder 2 is in a retracted state, and the arc-shaped core puller 7 is inserted into the mold cavity. After completion, molten aluminum is injected and cooled to ensure product molding. After completion, demolding is performed. First, the mold is opened. After the core-pulling structure is completed, the core-pulling cylinder 2 is activated. The main shaft of the core-pulling cylinder 2 extends and drives the transmission head 4. The transmission head 4 slides to the lower left along the inclined track groove 9. At the same time, the transmission head 4 drives the connecting rod 6. The connecting rod 6 can drive the core-pulling seat 5. The core-pulling seat 5 moves in an arc along the arc-shaped track groove 8, so that the arc-shaped core puller 7 can be removed from the product 3. After completion, the product 3 is removed. Finally, the main shaft of the core-pulling cylinder 2 retracts, and the entire device is reset, thus ensuring that the structure can perform the next action.

[0036] Because of the central shaft 13 at both ends of the connecting rod 6, the connecting rod 6 can change as it moves.

Claims

1. A bent tube core-pulling structure, characterized by: The system includes a positioning block (1), a core-pulling cylinder (2), a transmission head (4), and a core-pulling seat (5). There are two positioning blocks (1) arranged symmetrically front to back. The core-pulling cylinder (2) with its main shaft tilted to the lower left is installed on the upper right side between the two blocks. The transmission head (4) is installed on the main shaft of the core-pulling cylinder (2). The transmission head (4) is located in the lower middle part between the two positioning blocks (1) and moves obliquely with the extension and retraction of the main shaft. The core-pulling device is installed at the upper part between the two positioning blocks (1). The core-pulling seat (5) is equipped with an arc-shaped core-pulling device (7) with an arc-shaped upper end. The front and rear sides of the core-pulling seat (5) are provided with arc-shaped protrusions (11). The positioning block (1) is provided with an arc-shaped track groove (8) that matches the arc-shaped protrusions (11) on the opposite side. A connecting rod (6) is installed between the transmission head (4) and the core-pulling seat (5). The two ends of the connecting rod (6) are connected to the transmission head (4) or the core-pulling seat (5) through a central shaft (13).

2. A bend core structure according to claim 1, wherein: The transmission head (4) is provided with inclined bar protrusions (10) parallel to the core-pulling cylinder (2) on both the front and rear sides, and the positioning block (1) is provided with inclined track grooves (9) matching the inclined bar protrusions (10) on the opposite side.

3. A bend core structure according to claim 1, wherein: The upper part of the arc core puller (7) is provided with an arc-shaped insert that bends to the left at the top. The arc-shaped protrusion (11) and the arc-shaped track groove (8) both adopt an arc-shaped structure that bends to the left at the bottom.

4. A bend core structure according to claim 1, wherein: The upper left part of the transmission head (4) and the lower right part of the core-pulling seat (5) are both provided with a docking insertion notch located in the center, and both ends of the connecting rod (6) are inserted into the docking insertion notch.

5. The bent pipe core-pulling structure according to claim 1, characterized in that: A bearing structure (12) is embedded in the front and rear sides of the upper left part of the transmission head (4) and the lower right part of the core-pulling seat (5), and both ends of the central shaft (13) are inserted into the inner ring of the corresponding bearing structure (12).

6. A tube core structure according to claim 5, wherein: Both ends of the central shaft (13) are equipped with snap ring structures that abut against the bearing structure (12).

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