Debugging-free extrusion die

Abstract

The utility model relates to the technical field of pipe fitting production equipment, and particularly discloses a debugging-free extrusion die which comprises an inner die structure and an outer die structure, the inner die structure is installed inside the outer die structure, the inner die structure adopts an integrally formed structural form, and the inner die structure comprises an extrusion pipe body at the front part, a reducing pipe body at the middle part and an installation part at the rear part; a raw material channel is arranged in the reducing pipe body and the mounting component, an extrusion channel is arranged in the extrusion pipe body, and the extrusion channel is communicated with the raw material channel; the inner mold structure and the outer mold structure are both of an integrally-formed structural form, the inner mold structure is directly connected to the interior of the outer mold structure in a threaded mode, the outer mold structure is of a three-section structure with the outer contour matched with the inner mold structure, the problems of bolt connection and untight sealing of the jackscrew position are avoided, the temperature in the inner mold structure is stable, and the service life of the mold is prolonged. The pipe fitting production quality is stable, an adjusting jackscrew does not need to be arranged externally, the use of components is greatly reduced, the adjustment and maintenance work is simpler and more efficient, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe fitting production equipment, in particular to an adjustment-free extrusion die. Background Art

[0002] The extrusion die for pipe fittings is the core component in the manufacturing process of plastic or rubber pipe fittings. It is used to extrude heated plastic or rubber raw materials into a tube or other shape through a die of a specific shape. The following is some key information about the extrusion die for pipe fittings:

[0003] 1. Mold design: The design of the extrusion mold needs to be customized according to the size, shape and material properties of the final product. The mold usually consists of two main parts: the inlet (also called the feed port) and the outlet (also called the die lip). The inlet part guides the molten plastic into the mold, while the die lip part determines the final shape and size of the pipe.

[0004] 2. Material selection: The mold is usually made of high-hardness, corrosion-resistant steel, such as high-speed steel (HSS), chrome steel, etc., to withstand high temperature and high pressure working environment and ensure a long service life.

[0005] 3. Temperature control: The mold needs to maintain a certain temperature during operation to ensure the fluidity and molding quality of the plastic or rubber during the extrusion process. This is usually achieved through a built-in heating and cooling system, such as water circulation cooling or electric heating belts.

[0006] 4. Extrusion process: During the extrusion process, the heated plastic or rubber raw material is pushed to the mold entrance through the screw of the extruder, and after being squeezed and cooled by the mold, it finally forms the desired pipe shape. Accurate control of extrusion speed, pressure and temperature is crucial to product quality.

[0007] 5. Cooling system: The extruded pipe needs to be cooled immediately to fix the shape, which is usually achieved through a water tank or air cooling device. The cooling speed and method will also affect the physical properties of the pipe.

[0008] 6. Subsequent processing: The extruded pipe may need to go through subsequent processes such as pulling, cutting, surface treatment, etc. to meet the specifications of the final product.

[0009] 7. Mold maintenance: Regular cleaning and maintenance are very important to maintain the accuracy and extend the service life of the mold. Mold maintenance includes cleaning residues, checking wear and lubricating moving parts.

[0010] Existing extrusion dies for pipe fitting production include an outer mold and an inner mold structure. Both the inner mold structure and the outer mold structure adopt a split structure. The inner mold structure is fixed to the outer mold structure by bolts at the front and back. The outer mold structure adopts a two-stage structure in which cylindrical pipe fittings are connected by bolts, and the joints are sealed by sealants. Multiple top screws are installed on the outside of the outer mold structure to support the inner mold structure to adjust the outlet position of the inner mold structure. Existing split inner mold structures and outer mold structures have many components, many adjustment accessories, low adjustment accuracy, and complex maintenance processes. In addition, air leakage and heat dissipation are prone to occur at the joints and top screws, resulting in poor temperature control and unstable pipe production quality. Therefore, there is an urgent need to design an extrusion mold that does not require debugging to solve the problem that the existing split-type extrusion mold components are difficult to maintain and the quality of pipe production is unstable. Utility Model Content

[0011] In view of the problems existing in the prior art, the utility model aims to provide an adjustment-free extrusion die.

[0012] The technical solution adopted by the utility model to solve its technical problems is: an adjustment-free extrusion mold, including an inner mold structure and an outer mold structure, the inner mold structure is installed inside the outer mold structure, the inner mold structure adopts an integrated structural form, the inner mold structure includes an extrusion tube body at the front, a reducing tube body in the middle and a mounting component at the rear, a raw material channel is arranged inside the reducing tube body and the mounting component, an extrusion channel is arranged inside the extrusion tube body, and the extrusion channel is connected to the raw material channel.

[0013] Specifically, the outer mold structure adopts an integrally formed structure, an inner mold mounting hole is provided inside the outer mold structure, and the contour of the inner mold mounting hole is adapted to the outer contour of the inner mold structure.

[0014] Specifically, the inner mold mounting hole is provided with an inner mold mounting thread, the mounting component is provided with an outer mounting thread, the outer mounting thread is threadedly connected to the inner mold mounting thread inside the outer mold structure, and the inner mold structure is threadedly connected to the inside of the outer mold structure.

[0015] Specifically, a stop plate is provided on the installation component, and the stop plate is located on the outside of the installation external thread. An inner mold stop countersunk hole is provided on the outside of the inner mold installation thread. The diameter of the inner mold stop countersunk hole is larger than the diameter of the inner mold installation thread. The inner mold stop countersunk hole blocks and adapts the stop plate to sink into.

[0016] Specifically, a feed pipe mounting nut is fixedly provided on the outside of the stop plate, and the feed pipe mounting nut and the stop plate are provided with the same internal threaded hole, the feed pipe connector is threaded inside the internal threaded hole, the internal threaded hole is connected to the raw material channel, and the raw material in the feed pipe enters the raw material channel.

[0017] Specifically, a probe mounting screw hole is provided on one side of the outer mold structure, and the internal thread of the probe mounting screw hole is threadedly connected to the external thread of the temperature measuring probe.

[0018] Specifically, a probe insertion hole is provided in the middle of the inner side of the probe mounting screw hole, the probe insertion hole passes through the probe mounting screw hole and the inner mold mounting hole, the detection head of the temperature measuring probe is inserted into the probe insertion hole, and the detection head of the temperature measuring probe contacts the groove between the reducer body and the mounting component.

[0019] Specifically, the extruded tube body adopts a hollow tubular structure, and the diameter of the extrusion channel inside the extruded tube body is smaller than the diameter of the raw material channel.

[0020] The utility model has the following beneficial effects:

[0021] The inner mold structure and outer mold structure of the adjustment-free extrusion die designed by the utility model both adopt an integrated structural form. The inner mold structure is directly threaded inside the outer mold structure. The outer mold structure adopts a three-section structure with an outer contour adapted to the inner mold structure, thereby avoiding the problems of bolt connection and poor sealing of the top screw position, so that the internal temperature of the inner mold structure is stable and the production quality of pipe fittings is stable. The inner mold structure is directly limited and installed inside the outer mold structure, and there is no need to set an external adjustment top screw, which greatly reduces the use of components, makes adjustment and maintenance work simpler and more efficient, and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the inner mold structure of the debugging-free extrusion mold.

[0023] Figure 2 yes Figure 1 Left view of .

[0024] Figure 3 yes Figure 1 Right view of .

[0025] Figure 4 It is a structural schematic diagram of an inner mold structure of a debugging-free extrusion mold inserted into an outer mold structure.

[0026] Figure 5 It is a structural schematic diagram in which the inner mold structure is installed in the outer mold structure.

[0027] In the figure: 1-inner mold structure, 1.1-feed pipe mounting nut, 1.2-stop plate, 1.3-inner thread hole, 1.4-mounting outer thread, 1.5-raw material channel, 1.6-extrusion tube body, 1.7-extrusion channel;

[0028] 2-external mold structure, 2.1-inner mold mounting hole, 2.2-inner mold mounting thread, 2.3-inner mold stop countersunk hole, 2.4-probe mounting screw hole, 2.5-probe insertion hole. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely further describe the technical solutions in the embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] like Figure 1-Figure 5 As shown, an adjustment-free extrusion die includes an inner mold structure 1 and an outer mold structure 2. The inner mold structure 1 is installed inside the outer mold structure 2. The inner mold structure 1 adopts an integrated structure. The inner mold structure 1 includes an extrusion tube body 1.6 at the front, a reducer tube body in the middle and a mounting component at the rear. The extrusion tube body 1.6 adopts a hollow tubular structure. The diameter of the extrusion channel 1.7 inside the extrusion tube body 1.6 is smaller than the diameter of the raw material channel 1.5.

[0031] A raw material channel 1.5 is provided inside the reducer body and the mounting component, an extrusion channel 1.7 is provided inside the extrusion tube body 1.6, and the extrusion channel 1.7 is connected to the raw material channel 1.5. The heated plastic or rubber raw material enters the raw material channel 1.5 through the feed pipe, and is extruded from the extrusion channel 1.7 and cooled into a tube.

[0032] The outer mold structure 2 adopts an integrally formed structure, and includes hollow cylinders on both sides and a frustum-shaped structure in the middle. An inner mold mounting hole 2.1 is provided inside the outer mold structure 2, and the contour of the inner mold mounting hole 2.1 is adapted to the outer contour of the inner mold structure 1.

[0033] The inner mold mounting hole 2.1 is provided with an inner mold mounting thread 2.2, and the mounting component is provided with an mounting external thread 1.4. The mounting external thread 1.4 is threadedly connected to the inner mold mounting thread 2.2 inside the outer mold structure 2, and the inner mold structure 1 is threadedly connected to the inner part of the outer mold structure 2 through the mounting external thread 1.4.

[0034] A stop plate 1.2 is provided on the mounting component, and the stop plate 1.2 is located on the outside of the mounting external thread 1.4. An inner mold stop countersunk hole 2.3 is provided on the outside of the inner mold mounting thread 2.2. The diameter of the inner mold stop countersunk hole 2.3 is larger than the diameter of the inner mold mounting thread 2.2. The inner mold stop countersunk hole 2.3 blocks and adapts the stop plate 1.2 to sink in, so that the inner mold structure 1 is embedded in the outer mold structure 2.

[0035] A feed pipe mounting nut 1.1 is fixedly provided on the outside of the stop plate 1.2. The same internal threaded hole 1.3 is provided inside the feed pipe mounting nut 1.1 and the stop plate 1.2. The internal threaded hole 1.3 is threadedly connected to a feed pipe connector. The internal threaded hole 1.3 is connected to a raw material channel 1.5. The heated plastic or rubber raw material in the feed pipe enters the raw material channel 1.5.

[0036] A probe mounting screw hole 2.4 is provided on one side of the outer mold structure 2, and the internal thread of the probe mounting screw hole 2.4 is threadedly connected to the external thread of the temperature measuring probe.

[0037] A probe insertion hole 2.5 is provided in the middle of the inner side of the probe mounting screw hole 2.4. The probe insertion hole 2.5 passes through the probe mounting screw hole 2.4 and the inner mold mounting hole 2.1. The detection head of the temperature measuring probe is inserted into the probe insertion hole 2.5, and the detection head of the temperature measuring probe contacts the groove between the reducer body and the mounting component.

[0038] The inner mold structure 1 and the outer mold structure 2 of the utility model both adopt an integrally formed structure. The inner mold structure 1 is directly threaded to the inside of the outer mold structure 2. The outer mold structure 2 adopts a three-section structure with an outer contour adapted to the inner mold structure 1, thereby avoiding the problems of bolt connection and poor sealing of the top screw position, so that the internal temperature of the inner mold structure 1 is stable and the production quality of the pipe fittings is stable. The inner mold structure 1 is directly limited and installed inside the outer mold structure 2, and there is no need to set an external adjustment top screw, which greatly reduces the use of components, makes the adjustment and maintenance work simpler and more efficient, and improves production efficiency.

[0039] The present utility model is not limited to the above-mentioned implementation modes, and anyone should be aware of the structural changes made under the inspiration of the present utility model. Any technical solutions that are the same or similar to the present utility model fall within the protection scope of the present utility model.

[0040] The technology, shape and structure parts not described in detail in the present invention are all known technologies.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A debugging-free extrusion die, characterized in that: The invention comprises an inner mould structure and an outer mould structure, wherein the inner mould structure is installed inside the outer mould structure, and the inner mould structure adopts an integrally formed structure. The inner mould structure comprises an extrusion tube body at the front, a reducing tube body in the middle and a mounting component at the rear, and a raw material channel is arranged inside the reducing tube body and the mounting component, and an extrusion channel is arranged inside the extrusion tube body, and the extrusion channel is connected to the raw material channel.

2. The adjustment-free extrusion die according to claim 1, characterized in that: The outer mold structure adopts an integrally formed structure, an inner mold mounting hole is arranged inside the outer mold structure, and the contour of the inner mold mounting hole is adapted to the outer contour of the inner mold structure.

3. The adjustment-free extrusion die according to claim 2, characterized in that: The inner mold mounting hole is provided with an inner mold mounting thread, the mounting component is provided with an outer mounting thread, the outer mounting thread is threadedly connected to the inner mold mounting thread inside the outer mold structure, and the inner mold structure is threadedly connected to the inside of the outer mold structure.

4. The adjustment-free extrusion die according to claim 3, characterized in that: The mounting component is provided with a stop plate, which is located on the outside of the mounting external thread. The outside of the inner mold mounting thread is provided with an inner mold stop countersunk hole. The diameter of the inner mold stop countersunk hole is larger than the diameter of the inner mold mounting thread. The inner mold stop countersunk hole blocks and adapts the stop plate to sink into.

5. The adjustment-free extrusion die according to claim 4, characterized in that: A feed pipe mounting nut is fixedly arranged on the outside of the stop plate, and the same internal threaded hole is arranged inside the feed pipe mounting nut and the stop plate, and the feed pipe connector is threadedly connected in the internal threaded hole. The internal threaded hole is connected to the raw material channel, and the raw materials in the feed pipe enter the raw material channel.

6. The adjustment-free extrusion die according to claim 2, characterized in that: A probe mounting screw hole is provided on one side of the outer mold structure, and the internal thread of the probe mounting screw hole is threadedly connected to the external thread of the temperature measuring probe.

7. The adjustment-free extrusion die according to claim 6, characterized in that: A probe insertion hole is provided in the middle of the inner side of the probe mounting screw hole, the probe insertion hole passes through the probe mounting screw hole and the inner mold mounting hole, the detection head of the temperature measuring probe is inserted into the probe insertion hole, and the detection head of the temperature measuring probe contacts the groove between the reducer body and the mounting component.

8. The adjustment-free extrusion die according to claim 1, characterized in that: The extrusion tube body adopts a hollow tubular structure, and the diameter of the extrusion channel inside the extrusion tube body is smaller than the diameter of the raw material channel.

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