Gas pipeline elbow forming die device

Abstract

The utility model discloses a gas pipeline elbow forming die device which solves the problem that when an elbow is bent and formed, the bent position is damaged or the inner cavity space of the elbow is soft and collapsed and cannot be formed, the gas pipeline elbow forming die device comprises a lower die and an upper die, and L-shaped die cavities are correspondingly formed in the lower die and the upper die. End grooves are symmetrically formed in the two ends of each L-shaped mold cavity, the inner diameter of each L-shaped mold cavity is larger than that of each end groove, the two L-shaped mold cavities are combined to form a mold cavity, and an elastic rubber column is placed in the mold cavity; in the working process, the L-shaped die cavities formed in the inner sides of the lower die and the upper die are combined to form the forming cavity, the elastic rubber column is bent to be the same as the L-shaped die cavities in bending degree and then is installed in the forming cavity, forming of an elbow is facilitated, and after forming is completed, due to the fact that the elastic rubber column can be bent, only the elastic rubber column needs to be pulled out, and the elbow can be formed. Therefore, the die is convenient to disassemble and assemble.

Description

Technical Field

[0001] This utility model belongs to the field of molding die technology, specifically a molding die device for forming gas pipeline elbows. Background Technology

[0002] Gas pipe elbows are devices used to connect two gas pipes. They are typically made of plastic. During production, a straight pipe section is first manufactured. While the straight pipe is still formed and relatively soft, a bending device is used to bend the middle of the pipe, thus forming the elbow. Once the elbow has solidified, it is ready. However, the following defects still exist:

[0003] When straight pipes are bent, the bending position may be damaged or the internal cavity may collapse and become unformed, resulting in poor production results. Utility Model Content

[0004] In order to overcome the defects of the prior art, this utility model provides a gas pipeline elbow forming mold device, which effectively solves the problem that the bending position may be damaged or the inner cavity may collapse and fail to form a shape when the elbow is bent.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a gas pipeline elbow forming mold device, including a lower mold and an upper mold, wherein L-shaped mold cavities are correspondingly opened inside the lower mold and the upper mold, and end grooves are symmetrically opened at both ends of the L-shaped mold cavity. The inner diameter of the L-shaped mold cavity is larger than the inner diameter of the end groove. The two L-shaped mold cavities are combined to form a mold cavity, and an elastic rubber column is placed inside the mold cavity.

[0006] When assembling the mold, bend the elastic rubber column to the same degree of curvature as the L-shaped mold cavity and install it in the two end slots accordingly. Then install the upper mold to complete the assembly. The outer wall of the elastic rubber column is in close contact with the outer wall of the end slot.

[0007] After the molding process is completed, the lower mold and the upper mold are separated, and the elastic rubber column is pulled out along the inner cavity of the molding bend to complete the material unloading. The lower mold has end grooves on both outer walls and end clamping components.

[0008] Preferably, the other two sides of the lower mold are equipped with feed pipes, both of which are connected to the L-shaped mold cavity. A positioning groove is provided on the top wall of the lower mold, and a positioning block is fixedly installed at the bottom of the upper mold. During assembly, the positioning block is inserted into the positioning groove.

[0009] Preferably, the end clamping assembly comprises clamping arc plates symmetrically arranged on both sides of the end groove of the lower mold, the bottom end of the clamping arc plate is fixedly installed with a sliding seat, the two sliding seats are symmetrically arranged between the two fixed plates, the fixed plates are fixedly installed on the outer wall of the lower mold, the two clamping arc plates are used for clamping and fixing the end of the elastic rubber column, and the top end of the clamping arc plate is provided with a pressing and fixing assembly.

[0010] Preferably, a guide rod is fixedly installed between the two fixed plates, double-head screws are rotatably installed between the two fixed plates, the sliding seat is slidably connected with the guide rod, and the two sliding seats are respectively threadedly connected with two opposite threaded grooves of the double-head screws.

[0011] Preferably, one end of each of the two double-head screws is installed with a rotating rod, the end of the rotating rod is installed with a bevel gear, the two bevel gears are engaged, one end of the double-head screw away from the rotating rod is fixedly connected with the output shaft of the motor, and the motor is fixedly installed on the fixed plate.

[0012] Preferably, the pressing and fixing assembly comprises an extrusion wedge arranged above the clamping arc plate, an installation plate fixedly installed between the extrusion wedge and the clamping arc plate, an extrusion inclined surface formed in the bottom end of the extrusion wedge, and a pressure receiving column arranged below the extrusion wedge and fixedly installed on the side wall of the upper mold.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] In work, the L-shaped mold cavity formed by the lower mold and the upper mold is combined to form a forming cavity, the elastic rubber column is bent to the same bending degree as the L-shaped mold cavity and then is installed in the forming cavity, the bending head is conveniently formed, after the forming is completed, the elastic rubber column can be bent, the elastic rubber column can be separated and discharged only by being pulled out, and the mold is conveniently disassembled and assembled.

[0015] In work, the two double-head screws are connected through the engagement of the two bevel gears, so that the two double-head screws can move synchronously, on the one hand, the clamping arc plates on both sides of the elastic rubber column are conveniently driven to move close to each other to clamp the elastic rubber column, and on the other hand, the clamping force of the elastic rubber column at both ends is the same, and the installation stability is improved.

[0016] In work, the pressure receiving column is arranged on the upper mold, when the two clamping arc plates move close to each other, the installation plate moves to the side of the pressure receiving column, the extrusion inclined surface generates pressure on the pressure receiving column, the upper mold and the lower mold are pressed tightly, and the bending head forming stability is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings are used to provide a further understanding of the utility model, constitute a part of the specification, are used together with the embodiments of the utility model to explain the utility model, and do not constitute a limitation on the utility model.

[0018] In the drawings:

[0019] Figure 1 It is a structure schematic view of the gas pipeline elbow forming die device of the utility model;

[0020] Figure 2 It is a lower die structure schematic view of the utility model;

[0021] Figure 3 It is an end clamping assembly structure schematic view of the utility model;

[0022] Figure 4 It is a structure schematic view of the utility model's pressing and fixing assembly;

[0023] Figure 5 It is an upper die structure schematic view of the utility model.

[0024] In the drawings: 1, lower die; 2, upper die; 3, L-shaped cavity; 4, end slot; 5, elastic rubber column; 6, feed pipe; 7, end clamping assembly; 701, fixed plate; 702, guide rod; 703, double-end screw rod; 704, sliding seat; 705, clamping arc plate; 706, rotating rod; 707, bevel gear; 708, motor; 8, pressing and fixing assembly; 801, extrusion wedge; 802, mounting plate; 803, extrusion slope; 804, pressure column. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with 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 the utility model.

[0026] By Figures 1-5 The utility model relates to a kind of gas pipeline elbow forming die device, including lower die 1 and upper die 2, the inside of lower die 1 and the inside of upper die 2 are all correspondingly provided with L-shaped cavity 3, two ends of L-shaped cavity 3 are symmetrically provided with end slot 4, the inner diameter of L-shaped cavity 3 is greater than the inner diameter of end slot 4, two L-shaped cavities 3 are combined to form cavity, elastic rubber column 5 is placed in cavity, two sides of lower die 1 are additionally provided with feed pipe 6, two feed pipes 6 are communicated with L-shaped cavity 3, positioning groove is provided on the top wall of lower die 1, positioning block is fixedly installed on the bottom of upper die 2, when assembling, positioning block is clamped into the inside of positioning groove.

[0027] When the mold is assembled, the elastic rubber column 5 is bent to the same degree of curvature as the L-shaped cavity 3 and is installed in the two end grooves 4, and then the upper mold 2 is installed, so that the outer wall of the elastic rubber column 5 is tightly attached to the outer wall of the end groove 4. After the molding process is completed, the lower mold 1 and the upper mold 2 are separated, and the elastic rubber column 5 is extracted along the inner cavity of the formed elbow to complete the discharging. The lower mold 1 is provided with an end clamping assembly 7 on the outer wall of the two sides of the end groove 4. The L-shaped cavity 3 formed by the inside of the lower mold 1 and the upper mold 2 forms a molding cavity. The elastic rubber column 5 is bent to the same degree of curvature as the L-shaped cavity 3 and is installed in the molding cavity, which facilitates the molding of the elbow. After the molding is completed, since the elastic rubber column 5 can be bent, the elastic rubber column 5 can be extracted to complete the separation and discharging, which facilitates the disassembly and assembly of the mold.

[0028] The end clamping assembly 7 comprises clamping arc plates 705 symmetrically arranged on both sides of the end groove 4 on the lower mold 1. The bottom end of the clamping arc plate 705 is fixedly installed with a sliding seat 704. The two sliding seats 704 are symmetrically arranged between the two fixed plates 701. The fixed plate 701 is fixedly installed on the outer wall of the lower mold 1. The two clamping arc plates 705 are used to clamp and fix the end of the elastic rubber column 5. The top end of the clamping arc plate 705 is provided with a pressing and fixing assembly 8. The two fixed plates 701 are fixedly installed with a guide rod 702 therebetween. The two fixed plates 701 are rotatably installed with double-headed screws 703 therebetween. The sliding seat 704 is slidably connected with the guide rod 702. The two sliding seats 704 are respectively threadedly connected with two oppositely directed threaded grooves on the double-headed screws 703. The ends of the two double-headed screws 703 away from the turning rods 706 are fixedly connected with the output shaft of the motor 708. The motor 708 is fixedly installed on the fixed plate 701. The two double-headed screws 703 are meshingly connected through the two bevel gears 707, so that the two double-headed screws 703 can move synchronously. On the one hand, it is convenient to drive the clamping arc plates 705 on both sides of the elastic rubber column 5 to move close to each other to clamp the elastic rubber column 5. On the other hand, the clamping force at both ends of the elastic rubber column 5 is the same, which improves the installation stability.

[0029] The pressing and fixing assembly 8 comprises an extrusion wedge 801 arranged above the clamping arc plate 705. The extrusion wedge 801 is fixedly installed with a mounting plate 802 between the clamping arc plate 705. The bottom end of the extrusion wedge 801 is provided with an extrusion inclined surface 803. The lower side of the extrusion wedge 801 is provided with a pressure receiving column 804. The pressure receiving column 804 is fixedly installed on the side wall of the upper mold 2. The upper mold 2 is provided with the pressure receiving column 804. When the two clamping arc plates 705 move close to each other, the mounting plate 802 moves towards the side of the pressure receiving column 804, so that the extrusion inclined surface 803 generates pressure on the pressure receiving column 804, so that the upper mold 2 and the lower mold 1 are pressed tightly, and the stability of the elbow molding is improved.

[0030] Working principle: when working, first, the elastic rubber column 5 is bent to be consistent with the bending degree of the L-shaped cavity 3, and the two ends of the elastic rubber column 5 are installed in the two end grooves 4 on the lower mold 1, then the upper mold 2 is installed on the top end of the lower mold 1, the L-shaped cavity 3 on the lower mold 1 and the upper mold 2 is combined to form a molding cavity, and the elastic rubber column 5 is arranged inside the molding cavity;

[0031] Then the motor 708 is started to drive one of the double-headed screws 703 to rotate, and the bevel gears 707 at the ends of the two rotating rods 706 are engaged, so as to drive the two double-headed screws 703 to rotate synchronously, since the two sliding seats 704 are respectively threadedly connected with the two oppositely directed thread grooves on the double-headed screw 703, so as to drive the two clamping arc plates 705 to approach each other to clamp and fix the ends of the elastic rubber column 5, and the clamping force on the two ends of the elastic rubber column 5 is the same, so as to improve the installation stability of the elastic rubber column 5;

[0032] When the two clamping arc plates 705 approach each other, the extrusion inclined surface 803 at the bottom of the extrusion wedge block 801 generates downward pressure on the pressure column 804 on the upper mold 2, so as to tightly press the upper mold 2 on the top end of the lower mold 1, improve the fixing and sealing effect of the lower mold 1 and the upper mold 2, and improve the subsequent material filling and molding;

[0033] Then the raw material is filled into the molding cavity from the feeding pipe 6, the temperature of the raw material is lower than the melting point of the elastic rubber column 5, after the raw material in the molding cavity is solidified, the mold needs to be opened, the two clamping arc plates 705 are driven to move away from each other, the elastic rubber column 5 is extracted along the inner cavity of the elbow, the lower mold 1 and the upper mold 2 are separated, and the material can be taken out.

Claims

1. A device for forming a bend in a gas pipe, comprising a lower die (1) and an upper die (2), characterised in that: The interior of the lower mold (1) and the interior of the upper mold (2) are both correspondingly provided with L-shaped mold cavities (3), the two ends of the L-shaped mold cavities (3) are symmetrically provided with end grooves (4), the inner diameter of the L-shaped mold cavities (3) is larger than the inner diameter of the end grooves (4), and the two L-shaped mold cavities (3) are combined to form a mold cavity, and the elastic rubber column (5) is placed in the mold cavity; When the mold is combined, the elastic rubber column (5) is bent to the same degree as the bending degree of the L-shaped mold cavity (3) and is correspondingly installed in the two end grooves (4), and then the upper mold (2) is installed, so that the assembly is completed, and the outer wall of the elastic rubber column (5) is tightly attached to the outer wall of the end groove (4); After the molding process is completed, the lower mold (1) is separated from the upper mold (2), the elastic rubber column (5) is pulled out along the inner cavity of the formed elbow, and the discharging is completed, the two sides of the end groove (4) provided on the top wall of the lower mold (1) is provided with an end clamping assembly (7).

2. A gas pipe elbow forming die apparatus according to claim 1, characterized in that: The other two sides of the lower mold (1) are both provided with feeding pipes (6), the two feeding pipes (6) are both communicated with the L-shaped mold cavities (3), and the top wall of the lower mold (1) is provided with a positioning groove, and the bottom of the upper mold (2) is fixedly provided with a positioning block.

3. A gas pipe elbow forming die apparatus according to claim 1, characterized in that: The end clamping assembly (7) comprises clamping arc plates (705) symmetrically arranged on the two sides of the end groove (4) of the lower mold (1), the bottom end of the clamping arc plate (705) is fixedly provided with a sliding seat (704), the two sliding seats (704) are symmetrically arranged between two fixed plates (701), the fixed plate (701) is fixedly installed on the outer wall of the lower mold (1), the two clamping arc plates (705) are used for clamping and fixing the end of the elastic rubber column (5), and the top end of the clamping arc plate (705) is provided with a pressing and fixing assembly (8).

4. A gas pipe bend forming die set as claimed in claim 3, wherein: The two fixed plates (701) are fixedly provided with guide rods (702), and the two fixed plates (701) are rotatably provided with double-head screws (703), the sliding seat (704) is slidably connected with the guide rod (702), and the two sliding seats (704) are respectively threadedly connected with two opposite threaded grooves of the double-head screw (703).

5. A gas pipe bend forming die set as claimed in claim 4, wherein: The two double-head screws (703) are both provided with rotating rods (706) at one end close to each other, the end of the rotating rod (706) is provided with a bevel gear (707), and the two bevel gears (707) are meshed, one end of the double-head screw (703) away from the rotating rod (706) is fixedly connected with the output shaft of the motor (708), and the motor (708) is fixedly installed on the fixed plate (701).

6. A gas pipe elbow forming die apparatus according to claim 3, wherein: The pressing and fixing assembly (8) comprises an extrusion wedge block (801) arranged above the clamping arc plate (705), the extrusion wedge block (801) and the clamping arc plate (705) are fixedly provided with a mounting plate (802), the bottom end of the extrusion wedge block (801) is provided with an extrusion inclined surface (803), the lower side of the extrusion wedge block (801) is provided with a pressure receiving column (804), and the pressure receiving column (804) is fixedly installed on the side wall of the upper mold (2).

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