High-density polyethylene (HDPE) special-shaped pipe hot-pressing bending forming die structure

Abstract

The utility model discloses an HDPE (high-density polyethylene) special-shaped pipe hot-pressing bending forming die structure, which relates to the technical field of special-shaped pipe forming and comprises a die holder, a die cavity is arranged on the surface of the die holder, a U-shaped frame is fixedly arranged at the top of the die holder, a pressing mechanism is arranged on the inner side of the U-shaped frame, and a U-shaped plate is fixedly arranged at the bottom of a pressing plate. A demolding mechanism is arranged at the bottom end of the U-shaped plate and comprises a supporting column, a sleeve is fixedly arranged at the top end of the supporting column, a demolding spring is fixedly arranged at the bottom of the inner side of the sleeve, a limiting block is fixedly arranged at the top end of the demolding spring, and a connecting rod is fixedly arranged at the top of the limiting block; the top end of the connecting rod extends out of the sleeve and is fixedly provided with a top block. The U-shaped plate is driven by the pressing plate to move upwards, the U-shaped plate drives the demolding mechanism to extrude an HDPE special-shaped pipe finished product upwards, then the HDPE special-shaped pipe finished product is ejected out of the mold cavity for demolding, the demolding speed of the HDPE special-shaped pipe finished product is increased, and then the machining efficiency of the HDPE special-shaped pipe is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to special-shaped pipe forming technical field, concretely relates to a HDPE special-shaped pipe hot press bending forming die structure. BACKGROUND

[0002] HDPE pipe is a kind of pipe material made of high-density polyethylene, HDPE pipe is the replacement product of traditional steel pipe material, polyvinyl chloride drinking water pipe, HDPE pipe must bear certain pressure, usually the PE resin with large molecular weight and good mechanical properties, such as HDPE resin, is selected.

[0003] The existing forming die is pressed into special-shaped pipe in the process of HDPE pipe, and the special-shaped pipe is easily clamped in the die groove, and the existing technology is unloaded by the worker holding the tool to the bending forming special-shaped pipe, the operation process is more troublesome, the unloading efficiency is low, and the overall processing efficiency is further affected. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of HDPE special-shaped pipe hot press bending forming die structure, to solve the problem raised in the above background technology.

[0005] To achieve the above object, the utility model provides a kind of HDPE special-shaped pipe hot press bending forming die structure, including die holder, the die holder surface is equipped with die cavity, the die holder top is fixedly arranged with U-shaped frame, the U-shaped frame inner side is provided with pressing mechanism, the pressing mechanism includes cylinder, the cylinder is fixedly arranged at U-shaped frame top, the output end of the cylinder penetrates U-shaped frame and is fixedly provided with pressing plate, the pressing plate bottom is fixedly provided with the pressing block compatible with die cavity, the pressing block inner side is provided with restriction component, the pressing plate bottom is fixedly provided with U-shaped plate, the die holder is equipped with through slot for the U-shaped plate two sides wall sliding penetration, the U-shaped plate bottom end is provided with stripping mechanism, the stripping mechanism includes support column, the support column is fixedly arranged at U-shaped plate bottom end, the support column top is fixedly provided with sleeve, the die holder bottom is equipped with through hole for sleeve up and down penetration, the sleeve inner side bottom is fixedly provided with stripping spring, the stripping spring top is fixedly provided with limit block, the limit block top is fixedly provided with connecting rod, the connecting rod top extends out of sleeve and is fixedly provided with top block, the die holder bottom is provided with two supports, the two supports top are both provided with damping component connected with die holder.

[0006] As a further improvement of the technical solution, the restriction component includes a plurality of restriction columns, the pressing block surface is equipped with a plurality of grooves, a plurality of the restriction columns are respectively slidably arranged in the plurality of grooves, and a restriction spring is fixedly arranged between one end of the pressing block and the groove wall.

[0007] As a further improvement of the technical solution, the plurality of limiting columns are annularly distributed, and the pressing block is provided with a sharp head away from one end of the limiting spring.

[0008] As a further improvement of the technical solution, the mold seat is provided with a containing cavity on both sides of the mold cavity, and the mold cavity is in communication with the two containing cavities.

[0009] As a further improvement of the technical solution, the damping assembly comprises a damper, the support is provided with a mounting groove at the top, the damper is fixedly arranged in the mounting groove, the top end of the damper is fixed to the bottom of the mold seat, and the outer side of the damper is sleeved with a damping spring.

[0010] As a further improvement of the technical solution, the U-shaped frame is provided with a positioning assembly on both sides, the positioning assembly comprises an electric push rod, the electric push rod is fixedly arranged on the side wall of the U-shaped frame, and the output end of the electric push rod is fixedly provided with a positioning plate.

[0011] Compared with the prior art, the utility model has the advantages of:

[0012] 1. By setting the pressing mechanism, the pressing block drives multiple limiting columns to move downward, the sharp head contacts the HDPE pipe and drives the limiting column to extrude the limiting spring, thereby limiting the HDPE pipe, so that the HDPE pipe cannot be deviated, and multiple limiting columns are arranged to limit the hot bending process of the HDPE pipe, effectively ensuring the stability of the HDPE pipe processing.

[0013] 2. By setting the demolding mechanism, the pressing plate drives the U-shaped plate to move upward, the U-shaped plate drives the demolding mechanism to extrude the HDPE special-shaped pipe product upward, thereby ejecting the HDPE special-shaped pipe product from the mold cavity for demolding, improving the demolding speed of the HDPE special-shaped pipe product, thereby improving the processing efficiency of the HDPE special-shaped pipe, and the demolding spring has the elastic buffering effect on the HDPE special-shaped pipe product, thereby effectively avoiding the problem of damaging the HDPE special-shaped pipe product during demolding. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the overall structure schematic view of the utility model;

[0015] Figure 2 It is the structure schematic view of the pressing mechanism of the utility model;

[0016] Figure 3 It is the structure schematic view of the mold seat section of the utility model;

[0017] Figure 4 It is the structure schematic view of the demolding mechanism of the utility model;

[0018] Figure 5The utility model is a structure schematic view of support.

[0019] The meanings of the various reference numerals in the figures are as follows:

[0020] 1, die holder; 2, die cavity; 3, U-shaped frame; 4, pressing mechanism; 41, air cylinder; 42, pressing plate; 43, pressing block; 44, limiting column; 45, limiting spring; 46, pointed head; 47, electric push rod; 48, positioning plate; 5, U-shaped plate; 6, demolding mechanism; 61, support column; 62, sleeve; 63, demolding spring; 64, limiting block; 65, connecting rod; 66, jacking block; 7, support; 8, damper; 9, shock-absorbing spring; 10, containing cavity. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] In the description of the utility model, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0023] Please refer to Figures 1-3As shown, the utility model provides a kind of HDPE special-shaped tube hot bending forming die structure, including die holder 1, die holder 1 surface is equipped with mould cavity 2, die holder 1 is located the both sides of mould cavity 2 and is equipped with containing cavity 10, mould cavity 2 is communicated with two containing cavities 10, containing cavity 10 is convenient to take out the HDPE special-shaped tube finished product of stripping, die holder 1 top is fixedly provided with U-shaped frame 3, U-shaped frame 3 inside is provided with pressing mechanism 4, and pressing mechanism 4 includes cylinder 41, cylinder 41 is fixedly set in U-shaped frame 3 top, and the output end of cylinder 41 is passed through U-shaped frame 3 and is fixedly provided with pressing plate 42, and pressing plate 42 bottom is fixedly provided with the pressing block 43 compatible with mould cavity 2, is driven pressing plate 42 to move down by the output end of cylinder 41, and pressing plate 42 drives pressing block 43 to move down, so that pressing block 43 enters mould cavity 2 by extruding hot HDPE pipe, and then HDPE pipe hot bending forming is formed, and the inside of pressing block 43 is provided with limiting component, and limiting component includes multiple limiting columns 44, and multiple recesses are equipped on the surface of pressing block 43, and multiple limiting columns 44 are slidably arranged in multiple recesses respectively, and limiting spring 45 is fixedly arranged between one end of pressing block 43 and recess wall, multiple limiting columns 44 are annularly distributed, and sharp head 46 is arranged at the end of pressing block 43 away from limiting spring 45, and pressing block 43 drives multiple limiting columns 44 to move down, by making sharp head 46 contact HDPE pipe and drive limiting column 44 extrude limiting spring 45, so that limiting column 44 limits HDPE pipe, so that HDPE pipe does not deviate, by setting multiple limiting columns 44, the hot bending process of HDPE pipe is limited, and positioning component is arranged on the both sides of U-shaped frame 3, and positioning component includes electric push rod 47, and electric push rod 47 is fixedly set in the side wall of U-shaped frame 3, and the output end of electric push rod 47 is fixedly provided with positioning plate 48, is driven positioning plate 48 to move by electric push rod 47, so that two positioning plates 48 contact the both ends of HDPE pipe, so that pressing block 43 contacts HDPE pipe, and HDPE pipe does not displace to both ends.

[0024] Please refer to Figures 3-5As shown, the bottom of the mold base 1 is provided with two supports 7, and the top of each support 7 is provided with a damping assembly connected with the mold base 1, which includes a damper 8, and the top of the support 7 is provided with a mounting groove, and the damper 8 is fixedly arranged in the mounting groove, and the top of the damper 8 is fixed with the bottom of the mold base 1, and the outer side of the damper 8 is provided with a damping spring 9, and during the hot bending process, the impact of the pressing block 43 on the HDPE pipe will generate vibration, and the mold base 1 is extruded by a plurality of dampers 8, and the vibration is absorbed by the plurality of dampers 8, and the damping spring 9 is matched with the mold base 1 to reduce the vibration, so that the mold base 1 remains stable during the processing, and the bottom of the pressing plate 42 is fixedly provided with a U-shaped plate 5, and the mold base 1 is provided with a through groove for slidingly penetrating the two side walls of the U-shaped plate 5, and the bottom end of the U-shaped plate 5 is provided with a demolding mechanism 6, and after the hot bending process is completed, the cylinder 41 drives the pressing plate 42 to move upwards, the pressing plate 42 drives the U-shaped plate 5 to move upwards, and the U-shaped plate 5 drives the demolding mechanism 6 to extrude the HDPE special-shaped pipe product upwards, and then the HDPE special-shaped pipe product is ejected from the mold cavity 2 for demolding, and the demolding mechanism 6 includes a support 61 fixedly arranged at the bottom end of the U-shaped plate 5, a sleeve 62 fixedly arranged at the top end of the support 61, a through hole is formed in the bottom of the mold base 1 for the sleeve 62 to penetrate up and down, a demolding spring 63 is fixedly arranged at the inner bottom of the sleeve 62, a limiting block 64 is fixedly arranged at the top end of the demolding spring 63, a connecting rod 65 is fixedly arranged at the top of the limiting block 64, and the connecting rod 65 extends out of the sleeve 62 and is fixedly provided with a top block 66.

[0025] The specific working principle of the utility model is: the output end of the cylinder 41 drives the pressing plate 42 to move downwards, the pressing plate 42 drives the pressing block 43 to move downwards, the pressing block 43 enters the mold cavity 2 to extrude the hot HDPE pipe, and then the HDPE pipe is hot-pressed and bent, the pressing block 43 drives a plurality of limiting columns 44 to move downwards, the sharp head 46 contacts the HDPE pipe and drives the limiting column 44 to extrude the limiting spring 45, and then the limiting column 44 limits the HDPE pipe, so that the HDPE pipe does not deviate, a plurality of limiting columns 44 are arranged to limit the hot-pressing bending process of the HDPE pipe, after the hot-pressing bending process is completed, the cylinder 41 drives the pressing plate 42 to move upwards, the pressing plate 42 drives the U-shaped plate 5 to move upwards, the U-shaped plate 5 drives the support 61 to move upwards, the support 61 drives the sleeve 62 to move upwards, and then drives the limiting block 64 and the connecting rod 65 to move upwards, the connecting rod 65 drives the top block 66 to extrude the HDPE special-shaped pipe product upwards, and then the HDPE special-shaped pipe product is ejected from the mold cavity 2 for demolding, the demolding speed of the HDPE special-shaped pipe product is improved, and the processing efficiency of the HDPE special-shaped pipe is improved, the demolding spring 63 is arranged to have an elastic buffering effect on the HDPE special-shaped pipe product, thereby effectively avoiding the problem of damaging the HDPE special-shaped pipe product during the demolding process.

[0026] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A hot bending forming die structure of an HDPE special-shaped pipe, comprising a die base (1), a die cavity (2) is formed on the surface of the die base (1), and a U-shaped frame (3) is fixedly arranged on the top of the die base (1), characterized in that: The inside of the U-shaped frame (3) is provided with a pressing mechanism (4), the pressing mechanism (4) comprises a pneumatic cylinder (41), the pneumatic cylinder (41) is fixedly arranged at the top of the U-shaped frame (3), the output end of the pneumatic cylinder (41) penetrates the U-shaped frame (3) and is fixedly provided with a pressing plate (42), the bottom of the pressing plate (42) is fixedly provided with a pressing block (43) matched with the mold cavity (2), the inside of the pressing block (43) is provided with a limiting assembly, the bottom of the pressing plate (42) is fixedly provided with a U-shaped plate (5), the mold base (1) is provided with a through groove for slidingly penetrating the two side walls of the U-shaped plate (5), the bottom end of the U-shaped plate (5) is provided with a demolding mechanism (6), the demolding mechanism (6) comprises a support column (61), the support column (61) is fixedly arranged at the bottom end of the U-shaped plate (5), the top end of the support column (61) is fixedly provided with a sleeve (62), the bottom of the mold base (1) is provided with a through hole for penetrating the sleeve (62) up and down, the inside of the sleeve (62) is fixedly provided with a demolding spring (63) at the bottom, the top end of the demolding spring (63) is fixedly provided with a limiting block (64), the top of the limiting block (64) is fixedly provided with a connecting rod (65), the top end of the connecting rod (65) extends out of the sleeve (62) and is fixedly provided with a top block (66), the bottom of the mold base (1) is provided with two supports (7), the top of each of the two supports (7) is provided with a damping assembly connected with the mold base (1).

2. The HDPE profiled pipe hot press bending forming die structure according to claim 1, characterized in that: The limiting assembly comprises a plurality of limiting columns (44), a plurality of grooves are formed in the surface of the pressing block (43), and the plurality of limiting columns (44) are respectively arranged in the plurality of grooves in a sliding mode, and a limiting spring (45) is fixedly arranged between one end of the pressing block (43) and the groove wall.

3. The HDPE profiled pipe hot press bending forming die structure according to claim 2, characterized in that: The plurality of limiting columns (44) are arranged in a ring shape, and the pressing block (43) is provided with a sharp end (46) away from one end of the limiting spring (45).

4. The HDPE profile pipe hot press bending forming die structure according to claim 1, characterized in that: The mold base (1) is provided with a containing cavity (10) on both sides of the mold cavity (2), and the mold cavity (2) is communicated with the two containing cavities (10).

5. The HDPE profile pipe hot press bending forming die structure according to claim 1, characterized in that: The damping assembly comprises a damper (8), the top of the support (7) is provided with a mounting groove, the damper (8) is fixedly arranged in the mounting groove, the top end of the damper (8) is fixed to the bottom of the mold base (1), and the damper (8) is sleeved with a damping spring (9) on the outside.

6. The HDPE profile pipe hot press bending forming die structure according to claim 1, characterized in that: The U-shaped frame (3) is provided with a positioning assembly on both sides, the positioning assembly comprises an electric push rod (47), the electric push rod (47) is fixedly arranged on the side wall of the U-shaped frame (3), and the output end of the electric push rod (47) is fixedly provided with a positioning plate (48).

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