Automobile accessory pipe bending die

Abstract

The utility model provides an automobile part bend pipe mould which comprises a bend pipe upper mould body, a bend pipe lower mould body, a limiting air cylinder, a bend pipe straight head demoulding air cylinder, a bend pipe elbow demoulding air cylinder and a pitched roof air cylinder, a sliding rail is installed on one side of the bend pipe upper mould body, and one end of the sliding rail is connected with the bend pipe straight head demoulding air cylinder in a bolt fastening mode. A first pull rod is installed at the output end of the bent pipe straight head demolding air cylinder, a sliding connecting base sliding on the sliding rail is installed at one end of the first pull rod, and a straight head plugging base is arranged at one end of the sliding connecting base. According to the bent pipe mold, the bent pipe is prevented from being abraded with the bent pipe upper mold cavity and the bent pipe lower mold cavity in the demolding process, then the straight head end head and the elbow end head of the bent pipe are protected, burrs and flash are avoided, the quality and precision of the bent pipe are improved, meanwhile, follow-up reprocessing treatment can be reduced, and the production efficiency of the bent pipe is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe bending moulds, and particularly relates to a pipe bending mould for automobile parts. Background Art

[0002] Bend pipe fittings are often used in the components of automobile assembly process. In order to make them compatible with the matching sleeves, pier heads are conventionally set at their ends and bent parts. That is, an annular protrusion protruding outward is set on the pipe wall at the end to form a pier ring to achieve the connection of the bent pipe.

[0003] In the existing technology, injection molds are usually used to produce bent pipes. However, since the structures of bent pipes are not uniform, there will be connecting lugs or pier head connecting sleeves on the surface. During the mold opening process of the existing mold, the diameter of the pier head is too large, resulting in contact wear between the mold cavity and the pier head, resulting in scratches on the product surface. For this reason, we designed a bent pipe mold for automotive parts. Summary of the Invention

[0004] The purpose of the utility model is to provide a tube bending die for automobile parts to solve the problems raised in the above background technology.

[0005] The purpose of the utility model can be achieved through the following technical solutions: a kind of automobile parts bending mold, including a bending upper mold body, a bending lower mold body, a limiting cylinder, a bending straight head demoulding cylinder, a bending elbow demoulding cylinder and a tilting top cylinder, the bottom end of the bending upper mold is provided with four connecting guide columns, the bending upper mold body is connected to the bending lower mold body through the four connecting guide columns, the bottom end of the bending lower mold is provided with a mold pad, the middle part of the bottom end of the bending upper mold is provided with a bending upper mold cavity, the middle part of the top end of the bending lower mold is provided with a bending lower mold cavity corresponding to the bending upper mold cavity, one side of the bending upper mold is provided with a sliding rail, one end of the sliding rail is fastened with a bolt of the bending straight head demoulding cylinder, and the output of the bending straight head demoulding cylinder is provided with a Pull rod one, one end of the pull rod one is equipped with a sliding connecting seat that slides with the sliding rail, one end of the sliding connecting seat is provided with a straight head blocking seat, the straight head blocking seat corresponds to the straight head of the upper mold cavity of the elbow and the straight head of the lower mold cavity of the elbow, the side of the sliding rail is equipped with a movable rail connected to the upper mold body of the elbow, one end of the movable rail is fastened with the bolt of the elbow elbow demoulding cylinder, one end of the elbow elbow demoulding cylinder is equipped with a pull rod two, one end of the pull rod two is equipped with a movable block movably connected to the movable rail, one end of the movable block is equipped with a linkage rod, the bottom end of the linkage rod is provided with an arc-shaped sliding seat, one end of the arc-shaped sliding seat is provided with an elbow blocking seat, the elbow blocking seat corresponds to the elbow of the upper mold cavity of the elbow and the elbow of the lower mold cavity of the elbow;

[0006] The side of the upper mold cavity of the bent pipe is installed with an arc track, and the arc sliding seat moves on the side of the upper mold cavity of the bent pipe along the arc track.

[0007] In the aforementioned automotive parts bend mold, the top of the bend upper mold is specifically equipped with two side panels. The tops of these two side panels are equipped with a mold gate top plate corresponding to the upper mold body. This arrangement facilitates connection to the injection molding machine's pouring pipe through the mold gate top plate to facilitate pouring operations, while also providing protection against movement of the mold inserts required for the bend mold.

[0008] In the aforementioned automotive tube bending mold, an insert mounting plate is installed at the bottom of the mold's top gate plate. The bottom of this plate houses multiple mold inserts that connect to the upper mold body of the tube bending mold. This arrangement allows the mold inserts to precisely control the size and shape of the tube bending, ensuring accuracy and consistency, and improving the quality of the bending.

[0009] In the aforementioned automotive parts bending mold, a slanted top slider seat is provided at the opening on the bottom side of the upper mold body. The slanted top slider seat corresponds to the elbow portion of the upper mold cavity of the bending pipe. The top side of the lower mold body of the bending pipe is provided with an oblique clamping block. The oblique clamping block corresponds to the opening on the bottom side of the upper mold body of the bending pipe and is connected to the slanted top slider seat. The purpose of this arrangement is to enable the slanted top slider seat to correspond to the elbow portion of the upper mold cavity of the bending pipe, so that the formed bending pipe elbow portion has a good limiting effect. At the same time, during the mold opening process, the separation of the upper and lower mold bodies of the bending pipe can be highly precise, making the demolding of the formed bending pipe elbow more convenient.

[0010] In the aforementioned automotive parts tube bending mold, the limit cylinder is mounted on a specific side of the tube bending lower mold, and a limit through-shaft is mounted on the output shaft of the limit cylinder. The limit through-shaft passes through the tube bending lower mold body and corresponds to the tube bending lower mold cavity. This arrangement is intended to allow the limit cylinder and the limit through-shaft to correspond to the hole positions of the tube bending derivative components in the tube bending lower mold cavity, allowing the required holes of the derivative components to be integrally formed and ensuring the firmness of the formed tube bending within the tube bending lower mold cavity to prevent accidental loosening.

[0011] In the aforementioned automotive parts bending mold, a beveled opening is formed at a corner of the top of the upper mold body, connected to a tilted ejection cylinder. A tilted ejector rod is mounted on the output end of the tilted ejector rod, which aligns with the upper mold cavity. This arrangement allows the tilted ejector rod and its connected tilted ejector rod to quickly eject the formed bent pipe, enabling demolding. Furthermore, the tilted ejector rod's top corner of the upper mold body aligns with the transition between the elbow and the straight end of the pipe, concentrating the ejection force at the location where the pipe is ejected, thus preventing surface deformation caused by uneven force.

[0012] Compared with the prior art, the advantages of the automobile parts bending mold of the utility model are as follows: a sliding track is set on a specific side of the upper mold of the bending pipe, and a sliding connecting seat that slides with the sliding track is installed at one end of the pulling rod of the straight head demoulding cylinder of the bending pipe, a straight head blocking seat is set at one end of the sliding connecting seat, and the straight head blocking seat corresponds to the straight head of the upper mold cavity of the bending pipe and the straight head of the lower mold cavity of the bending pipe; similarly, the movable track is set on the side of the sliding track, one end of the pulling rod of the elbow demoulding cylinder of the bending pipe is installed with an active block that is movably connected to the movable track, and one end of the active block is installed with a linkage rod. An arc-shaped sliding seat is provided at the bottom end, and an elbow sealing seat is provided at one end of the arc-shaped sliding seat, which corresponds to the elbow of the upper mold cavity of the elbow and the elbow of the lower mold cavity of the elbow. This arrangement can seal the straight end and the elbow end of the elbow, so that the elbow can avoid wear with the upper mold cavity and the lower mold cavity of the elbow during demoulding, thereby protecting the straight end and the elbow end of the elbow, reducing the scratching phenomenon of the elbow, and avoiding the generation of burrs and flash, thereby improving the quality and precision of the elbow, and reducing the subsequent reprocessing of the elbow, thereby improving the production efficiency of the elbow. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model is a three-dimensional structural diagram of a pipe bending die for automobile parts.

[0014] Figure 2 The utility model is a three-dimensional structural diagram of a pipe bending die for automobile parts.

[0015] Figure 3 The utility model is a schematic diagram of the specific structure of a pipe bending upper die of a pipe bending die for automobile parts.

[0016] Figure 4 This utility model is a kind of automobile parts bending mold Figure 2 Schematic diagram of the three-dimensional display structure.

[0017] Figure 5 The utility model is a schematic diagram of the specific three-dimensional structure of a lower pipe bending die of a pipe bending die for automobile parts.

[0018] Figure 6 The utility model is a structural schematic diagram of a limiting cylinder of a bending mold for automobile parts.

[0019] Figure 7 The utility model is a schematic diagram of the installation structure of an inclined top cylinder of a bending mold for automobile parts.

[0020] In the figure, 1. upper mold body for elbow; 2. lower mold body for elbow; 3. mold pad; 4. side vertical plate; 5. mold gate top plate; 6. limit cylinder; 7. connecting guide column; 8. insert mounting plate; 9. mold insert; 10. oblique clamping block; 11. straight head demoulding cylinder for elbow; 12. pulling rod 1; 13. sliding track; 14. sliding connecting seat; 15. straight head blocking seat; 16. elbow demoulding cylinder for elbow; 17. pulling rod 2; 18. moving track; 19. movable clamping block; 20. linkage rod; 21. arc track; 22. arc sliding seat; 23. elbow blocking seat; 24. inclined top slider seat; 25. upper mold cavity for elbow; 26. inclined top cylinder; 27. lower mold cavity for elbow; 28. limit through shaft. DETAILED DESCRIPTION

[0021] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0022] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 As shown, the utility model is a pipe bending die for automobile parts;

[0023] Embodiment 1: The pipe bending mold includes an upper pipe bending mold body 1, a lower pipe bending mold body 2, a limiting cylinder 6, a straight pipe bending demoulding cylinder 11, a elbow bending demoulding cylinder 16 and a tilted top cylinder 26. Four connecting guide columns 7 are provided at the bottom end of the upper pipe bending mold body 1. The upper pipe bending mold body 1 is connected to the lower pipe bending mold body 2 through the four connecting guide columns 7. A mold pad 3 is provided at the bottom end of the lower pipe bending mold body 2. An upper pipe bending mold cavity 25 is opened in the middle of the bottom end of the upper pipe bending mold body 1, and a lower pipe bending mold cavity 27 corresponding to the upper pipe bending mold cavity 25 is opened in the middle of the top end of the lower pipe bending mold body 2.

[0024] Two side vertical plates 4 are provided at the top of the upper mold body 1 of the bend pipe, and the top of the two side vertical plates 4 is provided with a mold gate top plate 5 corresponding to the upper mold body 1 of the bend pipe; the bottom end of the mold gate top plate 5 is provided with an insert mounting plate 8, and the bottom end of the insert mounting plate 8 is provided with multiple mold inserts 9 connected to the upper mold body 1 of the bend pipe; the limit cylinder 6 is installed on one side of the lower mold body 2 of the bend pipe and the output shaft of the limit cylinder 6 is installed with a limit through shaft 28, the limit through shaft 28 passes through the lower mold body 2 of the bend pipe and corresponds to the lower mold cavity 27 of the bend pipe; an oblique opening is opened at a corner of the top of the upper mold body 1 of the bend pipe and is connected to the inclined top cylinder 26, and the output end of the inclined top cylinder 26 is installed with an inclined top rod and corresponds to the upper mold cavity 25 of the bend pipe through the inclined top rod.

[0025] On the basis of embodiment 1, in order to reduce the wear of the elbow and straight head of the elbow and reduce the generation of burrs during the demoulding process, and improve the production efficiency of the elbow; one side of the upper mold body 1 of the elbow is provided with a sliding rail 13, one end of the sliding rail 13 is bolted to the elbow straight head demoulding cylinder 11, the output of the elbow straight head demoulding cylinder 11 is provided with a pull rod 12, one end of the pull rod 12 is provided with a sliding connection seat 14 that slides with the sliding rail 13, one end of the sliding connection seat 14 is provided with a straight head blocking seat 15, the straight head blocking seat 15 corresponds to the straight head of the upper mold cavity 25 of the elbow and the straight head of the lower mold cavity 27 of the elbow, the side of the sliding rail 13 is provided with a moving rail 18 connected to the upper mold body 1 of the elbow, one end of the moving rail 18 is bolted to the elbow elbow demoulding cylinder 16, and one end of the elbow elbow demoulding cylinder 16 is provided with a It is equipped with a pulling rod 17, one end of which is provided with a movable block 19 movably connected to the movable track 18, and one end of the movable block 19 is provided with a linkage rod 20, and the bottom end of the linkage rod 20 is provided with an arc-shaped sliding seat 22, and one end of the arc-shaped sliding seat 22 is provided with an elbow blocking seat 23, and the elbow blocking seat 23 corresponds to the elbow of the upper mold cavity 25 of the bent pipe and the elbow of the lower mold cavity 27 of the bent pipe; the side of the upper mold cavity 25 of the bent pipe is provided with an arc track 21, and the arc sliding seat 22 moves along the arc track 21 on the side of the upper mold cavity 25 of the bent pipe; a slanted top slider seat 24 is provided at the opening on the bottom side of the upper mold body 1 of the bent pipe, and the slanted top slider seat 24 corresponds to the elbow part of the upper mold cavity 25 of the bent pipe, and the top side of the lower mold body 2 of the bent pipe is provided with an oblique blocking block 10, and the oblique blocking block 10 corresponds to the opening on the bottom side of the upper mold body 1 of the bent pipe and is connected to the oblique top slider seat 24.

[0026] Demolding process: Connect the elbow mold in Example 1 to the injection molding machine, inject the molten raw material into the elbow upper mold cavity 25 and the elbow lower mold cavity 27 to form the elbow product, such as Figure 6 The bent pipe shown in the figure, after cooling and forming, is driven by the output shaft of the limiting cylinder 6 to separate the limiting through-shaft 28 from the derivative components of the bent pipe, and then the upper mold body 1 and the lower mold body 2 of the bent pipe are separated (specifically, the upper mold body 1 and the lower mold body 2 of the bent pipe can be separated by a lifting structure), and the bent pipe product is separated from the lower mold cavity 27 of the bent pipe. In the next step, the straight head demoulding cylinder 11 of the bent pipe, the elbow demoulding cylinder 16 of the bent pipe and the inclined top cylinder 26 are all connected to the air source for circuit control. The straight head demoulding cylinder 11 of the bent pipe drives the straight head sealing seat 15 to move and separate the straight head part of the bent pipe, and the elbow demoulding cylinder 16 drives the elbow sealing seat 23 to separate the elbow part of the bent pipe. The inclined top cylinder 26 lifts the bent pipe product out of the upper mold cavity 25 of the bent pipe to realize the demoulding of the bent pipe product. The operations of the straight head demoulding cylinder 11 of the bent pipe, the elbow demoulding cylinder 16 and the inclined top cylinder 26 are all carried out synchronously.

[0027] In the above process, the arc-shaped sliding seat 22 moves along the arc-shaped track 21 on the side of the upper mold cavity 25 of the bent tube. This is to reduce the movement interference effect of the arc-shaped sliding seat 22, and at the same time, it can also prevent the linkage rod 20 from being interfered with by the movement of the arc-shaped sliding seat 22 during the movement process.

[0028] Matters not described in detail in this specification constitute prior art known to those skilled in the art. The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art to which the present invention relates may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A pipe bending mold for automobile parts, comprising a pipe bending upper mold body (1), a pipe bending lower mold body (2), a limiting cylinder (6), a pipe bending straight head demoulding cylinder (11), a pipe bending elbow demoulding cylinder (16) and a tilting top cylinder (26), wherein the bottom end of the pipe bending upper mold body (1) is provided with four connecting guide columns (7), the pipe bending upper mold body (1) is connected to the pipe bending lower mold body (2) by the four connecting guide columns (7), the bottom end of the pipe bending lower mold body (2) is provided with a mold pad (3), the bottom end middle portion of the pipe bending upper mold body (1) is provided with a pipe bending upper mold cavity (25), the top middle portion of the pipe bending lower mold body (2) is provided with a pipe bending lower mold cavity (27) corresponding to the pipe bending upper mold cavity (25), and the characteristics are as follows: A sliding rail (13) is installed on one side of the bend tube upper mold body (1), one end of the sliding rail (13) is bolted to the bend tube straight head demoulding cylinder (11), the output of the bend tube straight head demoulding cylinder (11) is installed with a pull rod (12), one end of the pull rod (12) is installed with a sliding connection seat (14) that slides with the sliding rail (13), one end of the sliding connection seat (14) is provided with a straight head blocking seat (15), the straight head blocking seat (15) corresponds to the straight head of the bend tube upper mold cavity (25) and the straight head of the bend tube lower mold cavity (27), and the side of the sliding rail (13) is installed with a connecting rod (12) that is connected to the bend tube upper mold body (1). A movable track (18), one end of the movable track (18) is bolted to the elbow demoulding cylinder (16), one end of the elbow demoulding cylinder (16) is installed with a pull rod 2 (17), one end of the pull rod 2 (17) is installed with a movable block (19) movably connected to the movable track (18), one end of the movable block (19) is installed with a linkage rod (20), the bottom end of the linkage rod (20) is provided with an arc-shaped sliding seat (22), one end of the arc-shaped sliding seat (22) is provided with an elbow blocking seat (23), the elbow blocking seat (23) corresponds to the elbow of the upper mold cavity (25) of the elbow and the elbow of the lower mold cavity (27) of the elbow; The side of the upper mold cavity (25) of the bent pipe is installed with an arc track (21), and the arc sliding seat (22) moves along the arc track (21) on the side of the upper mold cavity (25) of the bent pipe.

2. The automobile parts bending mold according to claim 1, characterized in that: The top end of the elbow upper mold body (1) is provided with two side vertical plates (4), and the top ends of the two side vertical plates (4) are provided with mold gate top plates (5) corresponding to the elbow upper mold body (1).

3. The automobile parts bending die according to claim 2, characterized in that: The bottom end of the mold gate top plate (5) is provided with an insert mounting plate (8), and the bottom end of the insert mounting plate (8) is provided with a plurality of mold inserts (9) connected to the upper mold body (1) of the elbow.

4. The automobile parts bending die according to claim 1, characterized in that: An inclined top slider seat (24) is provided at the opening on the bottom side of the upper mold body (1) of the bend pipe, and the inclined top slider seat (24) corresponds to the elbow portion of the upper mold cavity (25) of the bend pipe. An inclined clamping block (10) is provided at the top side of the lower mold body (2) of the bend pipe, and the inclined clamping block (10) corresponds to the opening on the bottom side of the upper mold body (1) of the bend pipe and is connected to the inclined top slider seat (24).

5. The automobile parts bending die according to claim 1, characterized in that: The limiting cylinder (6) is installed on one side of the elbow lower mold body (2), and the output shaft of the limiting cylinder (6) is installed with a limiting through-shaft (28), which passes through the elbow lower mold body (2) and corresponds to the elbow lower mold cavity (27).

6. The automobile parts bending die according to claim 1, characterized in that: An oblique opening is provided at a corner of the top of the upper mold body (1) of the elbow and is connected to an inclined ejection cylinder (26). An inclined ejection rod is installed at the output end of the inclined ejection cylinder (26) and corresponds to the upper mold cavity (25) of the elbow through the inclined ejection rod.

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