A pipe rapid forming device

Abstract

The utility model relates to the technical field of pipe processing, provide a kind of pipe rapid forming device, including upper die and lower die, the upper die is shaped multiple shaping cavities after cooperation with the lower die, blanking tube is communicated with the injection slot on the lower die, the branch material groove of the injection slot is one-to-one corresponding with the shaping cavity, the lower die includes two rows of lower shaping groove, the injection slot and the branch material groove are respectively arranged in first plane and second plane mutually into preset angle, two rows of the lower shaping groove are arranged in the second plane.The utility model optimizes the structure of existing pipe processing die, improves the density uniformity of processing pipe, solves the problem that the surface of the processed pipe appears local depression because the flow of pipe raw material is blocked, improves the practicability of pipe forming device.

Description

Technical Field

[0001] This application relates to the field of pipe processing technology, specifically to a rapid pipe forming device. Background Technology

[0002] PPR, or random copolymer polypropylene, is a high-end product of polypropylene and is widely used as a raw material in pipe processing technology. Pipe processing involves melting raw material particles, injecting them into a specific mold, and then cooling to shape the pipe structure. However, existing pipe production molds have drawbacks. During pipe processing, the molten material flowing into the molding space encounters high flow resistance, potentially resulting in some areas not fully filling the molding cavity. This can lead to uneven pipe density or localized defects such as depressions. Summary of the Invention

[0003] This utility model provides a rapid prototyping device for pipes, which solves the problem of uneven density or local depressions in pipes processed by existing molds by optimizing existing processing molds.

[0004] This utility model provides a rapid forming device for pipes, including an upper mold and a lower mold. The upper mold and the lower mold cooperate to form multiple shaping cavities. The feed pipe is connected to the injection groove on the lower mold. The branch grooves of the injection groove correspond one-to-one with the shaping cavities. The lower mold includes two rows of lower shaping grooves. The injection groove and the branch grooves are respectively arranged on a first plane and a second plane forming a preset angle with each other. The two rows of lower shaping grooves are arranged on the second plane.

[0005] The pipe forming device provided by this utility model is equipped with an upper mold and a lower mold positioned vertically. The lower mold is provided with an injection groove and a branch material groove in different planes, so that the injected molten pipe material automatically flows into the forming groove under its own weight, so that the pipe material material is stably filled in the forming cavity, thereby improving the density uniformity of the processed pipe and avoiding the problem of local depressions on the surface of the processed pipe due to obstruction of the flow of pipe material, thus improving the practicality of the pipe forming device.

[0006] Optionally, the upper mold includes a third plane and a fourth plane that correspond to the first plane and the second plane, respectively.

[0007] Optionally, the second plane forms an acute angle with the horizontal plane.

[0008] In this design, the second plane of the lower mold forms an acute angle with the horizontal plane, making the forming groove inclined, which facilitates the flow of the pipe material under its own weight.

[0009] Optionally, a pressure pump may also be included, which is connected to the feed pipe.

[0010] In this design, the pressure pump can not only control the injection pressure of the pipe material into the molding tank, but also increase the injection rate and improve the pipe processing efficiency.

[0011] Optionally, the lower mold and the upper mold are provided with cooling chambers, which are connected to an external cooling system; the cooling chambers correspond one-to-one with the molding grooves.

[0012] In this design, cooling chambers are designed to correspond one-to-one with the shaping grooves of the upper and lower molds. This is to improve cooling efficiency. At the same time, independent cooling chambers can improve the uniformity of tube cooling and shaping.

[0013] Optionally, the preset included angle is within the range of 110°-170°.

[0014] In this design, this angle range serves to improve both demolding quality and the uniformity of injection.

[0015] Optionally, the upper mold and the lower mold have the same slider on the same side. The slider is used to connect with the slide rail. The first drive controls the slider connected to the upper mold, and the second drive controls the lower mold to move up and down along the slide rail.

[0016] In this design, the first drive controls the upper mold to move up and down to achieve demolding and mold closure; the second drive controls the lower mold to move up and down to control the overall rapid downward movement of the mold after closure, using inertia to make the injected tubular material fully fill the molding cavity, and also to improve the density of the material injected into the molding cavity.

[0017] Optionally, the second drive includes a relay and a relay mounting base, with a gap between the relay mounting base and the bottom surface of the lower mold, including a contact state and a separation state.

[0018] In this design, the movement of the lower mold is controlled by a relay. When the power is on, the bottom surface of the lower mold is connected to the upper surface of the relay mounting base with a gap. When the power is off, the bottom surface of the lower mold and the upper surface of the relay mounting base are in contact with each other.

[0019] Optionally, a bracket is also included, on which the slide rail is mounted.

[0020] In this design, a support frame is provided to facilitate the installation, disassembly, and replacement of the upper and lower molds.

[0021] The beneficial effects of this utility model are as follows: This utility model provides a rapid pipe forming device, which improves the density uniformity of processed pipes by optimizing the structure of existing pipe processing molds, solves the problem of local depressions on the surface of processed pipes caused by obstructed flow of pipe raw materials, and improves the practicality of the pipe forming device. Attached Figure Description

[0022] Figure 1 This is a front structural diagram of a rapid prototyping device for pipes provided in this application; Figure 2 This is a schematic diagram of the three-dimensional axial structure of the lower mold in the embodiment of this application.

[0023] In the picture: 1: Upper mold; 2: Lower mold; 3: Injection groove; 31: Branch groove; 4: Slider; 5: Slide rail; 6: Support; 7: Shaping groove; A1: First plane; A2: Third plane; B1: Second plane; B2: Fourth plane. Detailed Implementation

[0024] The technical solutions in the embodiments of the application will now be clearly and completely described with reference to the accompanying drawings. Furthermore, the phrases "in one embodiment" or "in one embodiment" appearing throughout this specification do not necessarily refer to the same embodiment. Moreover, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0025] PPR, or random copolymer polypropylene pipe material, is a high-end product of polypropylene and is widely used as a raw material in pipe processing technology. Pipe processing involves melting raw material particles, injecting them into a specific mold, and then cooling to shape the pipe structure. However, existing pipe production molds suffer from high flow resistance in the molding space, potentially resulting in areas where the molten material cannot fully fill the molding cavity, leading to uneven pipe density or localized depressions. Therefore, this invention provides a rapid pipe forming device, which will be described in detail below with reference to embodiments and accompanying drawings.

[0026] It should be noted in advance that the raw materials for pipes described below are molten and used directly for pipe forming.

[0027] This utility model provides a rapid forming device for pipes, which includes an upper mold 1 and a lower mold 2. After the upper mold 1 and the lower mold 2 are combined, multiple plastic cavities are formed. The material feeding pipe is connected to the injection groove 3 on the lower mold 2. The branch material grooves 31 of the injection groove 3 correspond one-to-one with the plastic cavities. The lower mold 2 includes two rows of lower plastic grooves 7. The injection groove 3 and the branch material grooves 31 are respectively arranged on a first plane A1 and a second plane B1 that form a preset angle with each other. The two rows of lower plastic grooves 7 are arranged on the second plane B1.

[0028] The pipe forming device provided by this utility model is provided with an upper mold 1 and a lower mold 2 standing at opposite positions. The lower mold 2 is provided with an injection groove and a branch material groove 31 in different planes, so that the molten pipe material injected from the feeding pipe automatically flows into the shaping groove 7 under its own weight, so that the pipe material material is stably filled in the shaping cavity, thereby improving the density uniformity of the processed pipe and avoiding the problem of local depressions on the surface of the processed pipe due to obstruction of the flow of pipe material, thus improving the practicality of the pipe forming device.

[0029] As mentioned above, such as Figure 1 and Figure 2 As shown, the first plane A1 of the lower mold 2 is parallel to the horizontal plane, and the two second planes B1 are inclined relative to the first plane A1. A sprue 3 is provided on the first plane A1, and branch sprue 31 is provided on the second planes B1. The pipe material enters the branch sprue 31 from the sprue 3. Because the second planes B1 are inclined, the pipe material can quickly fill the molding groove 7 under its own weight. Furthermore, this inclined design facilitates quick demolding of the upper and lower molds 2.

[0030] In addition, the upper mold 1 includes a third plane A2 and a fourth plane B2 that correspond to the first plane A1 and the second plane B1, respectively. The first plane A1 and the third plane A2 are mutually matched planes, and the two second planes B1 and the two fourth planes B2 are mutually matched planes.

[0031] A feasible design involves setting the second plane B1 to form an acute angle with the horizontal plane. This design causes the forming groove 7 to be inclined, facilitating the flow of the pipe material under its own weight. In this embodiment, the size of this acute angle is not specifically limited; the actual flowability of the pipe material needs to be considered in the specific design.

[0032] In some embodiments, this application further includes a pressure pump connected to the aforementioned discharge pipe.

[0033] In this embodiment, the pressure pump can not only control the injection pressure of the pipe material into the molding tank 7, but also increase the injection rate, thereby improving the pipe processing efficiency. A main pressure pump specifically designed to draw in the pipe material can be installed, along with an air pump to pressurize the molding cavity after injection. This air pressure compacts the pipe material within the molding cavity, improving the density and uniformity of the processed pipe. This embodiment does not impose specific limitations on the model and other parameters of the main pressure pump and air pump; adjustments or selections should be made based on the characteristics of the actual pipe material being produced.

[0034] In addition, the lower mold 2 and the upper mold 1 in this application are provided with cooling chambers, which are connected to the external cooling system; the cooling chambers correspond one-to-one with the molding grooves 7.

[0035] In this embodiment, by designing cooling chambers that correspond one-to-one with the shaping grooves 7 of the upper mold 1 and the lower mold 2, the shaping grooves 7 are cooled one-to-one, thereby improving the efficiency of pipe cooling and forming. At the same time, the independent cooling chambers do not interfere with each other between adjacent shaping grooves 7, and the temperature of the cooling medium acts independently on the corresponding shaping chamber, which helps to improve the uniformity of pipe cooling and forming.

[0036] In some embodiments, the preset included angle formed between the first plane A1 and the second plane B1 is within the range of 110°-170°. It can also be set to 120°, 150°, etc. Within this angle range, it not only facilitates the separation between the upper mold 1 and the lower mold 2, thus improving the demolding quality of the tube rapid prototyping device, but also facilitates the automatic accumulation and sedimentation of the tube material during injection, thereby helping to improve the uniformity of the injection.

[0037] In other embodiments, such as Figure 1 As shown, the upper mold 1 and the lower mold 2 are provided with the same slider 4 on the same side. The slider 4 is used to connect with the slide rail 5. The first drive controls the slider 4 connected to the upper mold 1, and the second drive controls the lower mold 2 to move up and down along the slide rail 5.

[0038] In this embodiment, the first drive controls the upper mold 1 to move up and down to achieve demolding and mold closure; the second drive controls the lower mold 2 to move up and down to control the overall rapid downward movement of the mold after it is closed, so that the injected tubular material can fully fill the molding cavity by using inertia, and also to improve the density of the material injected into the molding cavity.

[0039] The aforementioned second drive includes a relay and a relay mounting base. A gap is provided between the relay mounting base and the bottom surface of the lower mold 2, allowing for both contact and separation states. When the relay is energized, the bottom surface of the lower mold 2 and the upper surface of the relay mounting base are connected through the gap, meaning they separate under the action of electromagnetic force. When the power is off, the bottom surface of the lower mold 2 and the upper surface of the relay mounting base are in contact, meaning that after the electromagnetic force is turned off, the lower mold 2 automatically descends under its own weight. During this rapid descent, the pipe material is compressed under inertia, increasing the density of the pipe.

[0040] In addition, the aforementioned embodiment also includes a bracket 6, on which the slide rail 5 is mounted. The bracket 6 facilitates the installation, disassembly, and replacement of the upper and lower molds 2.

[0041] Finally, the pipe rapid prototyping device provided by this utility model improves the density uniformity of processed pipes by optimizing the structure of existing pipe processing molds, solves the problem of local depressions on the surface of processed pipes caused by obstructed flow of pipe raw materials, and improves the practicality of the pipe forming device.

[0042] The above embodiments merely illustrate the implementation of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A rapid forming device for pipes, comprising an upper mold (1) and a lower mold (2), wherein the upper mold (1) and the lower mold (2) cooperate to form multiple shaping cavities, and a feed pipe is connected to an injection groove (3) on the lower mold (2), wherein branch grooves (31) of the injection groove (3) correspond one-to-one with the shaping cavities, characterized in that, The lower mold (2) includes two rows of lower shaping grooves (7). The injection groove (3) and the branch material groove (31) are respectively located on a first plane (A1) and a second plane (B1) forming a preset angle between them. The two rows of lower shaping grooves (7) are located on the second plane (B1).

2. The rapid prototyping device for pipes according to claim 1, characterized in that, The upper mold (1) includes a third plane (A2) and a fourth plane (B2) that correspond to the first plane (A1) and the second plane (B1), respectively.

3. The rapid prototyping device for pipes according to claim 2, characterized in that, The second plane (B1) forms an acute angle with the horizontal plane.

4. The rapid prototyping device for pipes according to claim 2, characterized in that, It also includes a pressure pump, which is connected to the feed pipe.

5. The rapid prototyping device for pipes according to claim 2, characterized in that, The lower mold (2) and the upper mold (1) are provided with cooling chambers, which are connected to the external cooling system.

6. The rapid prototyping device for pipes according to claim 5, characterized in that, The cooling chamber corresponds one-to-one with the shaping groove (7).

7. The rapid prototyping device for pipes according to claim 2, characterized in that, The preset included angle is within the range of 110°-170°.

8. A rapid tube forming apparatus according to any one of claims 1-7, characterized in that, The upper mold (1) and the lower mold (2) have the same slider (4) on the same side. The slider (4) is used to connect with the slide rail (5). The first drive controls the slider (4) connected to the upper mold (1), and the second drive controls the lower mold (2) to move up and down along the slide rail (5).

9. A rapid pipe forming device according to claim 8, characterized in that, The second drive includes a relay and a relay mounting base. The relay mounting base is spaced apart from the bottom surface of the lower mold (2), and includes a contact state and a separation state.

10. A rapid pipe forming device according to claim 8, characterized in that, It also includes a bracket (6), on which the slide rail (5) is mounted.

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