High-toughness polyphenylene sulfide (PPS) material constant-temperature heat insulation mold

Abstract

The utility model discloses a high toughness polyphenylene sulfide (PPS) material constant temperature heat insulation mould, which comprises a supporting seat, the upper end of the supporting seat is symmetrically and fixedly connected with two vertical plates, the upper ends of the two vertical plates are fixedly connected with a transverse plate together, the lower end of the transverse plate is fixedly connected with a first hydraulic telescopic rod, and the lower end of the first hydraulic telescopic rod is fixedly connected with a second hydraulic telescopic rod. The telescopic end of the first hydraulic telescopic rod is fixedly connected with an upper die body, and a lower die body is arranged at the upper end of the supporting base. And the constant-temperature melting mechanism comprises a heat preservation barrel fixedly connected to the upper end of the supporting seat, a feeding opening is formed in the upper end of the heat preservation barrel, a temperature conduction layer is arranged on the inner wall of the heat preservation barrel, and an electric heating wire is embedded in the temperature conduction layer. According to the constant-temperature heat insulation mold, in the specific operation process, bubbles in molten plastic can be removed through the arrangement of the net plate, the situation that the subsequent injection molding quality is affected is avoided, and in addition, the molten state of polyphenylene sulfide PPS material particles can be visually observed.

Description

Technical Field

[0001] The utility model relates to the technical field of constant temperature heat insulation moulds, in particular to a constant temperature heat insulation mould made of high-toughness polyphenylene sulfide PPS material. Background Art

[0002] Polyphenylene sulfide (PPS) is a special engineering plastic with excellent performance, and also a crystalline thermoplastic. It is a linear crystalline thermoplastic resin with phenylthio groups in the molecular chain. This resin is a special engineering plastic with excellent performance. It has excellent heat resistance, its heat deformation temperature exceeds 260℃, and its long-term use temperature is 220240℃. It has good mechanical properties, extremely strong rigidity, high surface hardness, and excellent creep resistance and fatigue resistance, outstanding wear resistance; excellent chemical resistance;

[0003] Polyphenylene sulfide is the raw material for injection molding. During the injection molding process, granular plastic particles are put into a melting barrel for melting, and then a stirring structure is used to make the plastic particles melt more evenly. However, bubbles are easily generated during the stirring process, which can easily affect the refrigeration of subsequent injection molding. In addition, in the existing mold, it is impossible to intuitively judge whether the plastic particles are completely melted. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a high-toughness polyphenylene sulfide PPS material constant temperature insulation mold. During the specific operation process, the constant temperature insulation mold can remove bubbles in the melted plastic by setting a mesh plate to avoid affecting the quality of subsequent injection molding. In addition, the melting state of polyphenylene sulfide PPS material particles can be intuitively observed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A constant temperature insulation mold for high-toughness polyphenylene sulfide (PPS) material, comprising a support seat, the upper end of the support seat is symmetrically fixedly connected to two vertical plates, the upper ends of the two vertical plates are commonly fixedly connected to a horizontal plate, the lower end of the horizontal plate is fixedly connected to a first hydraulic telescopic rod, the telescopic end of the first hydraulic telescopic rod is fixedly connected to an upper mold body, and the upper end of the support seat is provided with a lower mold body; a constant temperature melting mechanism, the constant temperature melting mechanism comprises a heat preservation barrel fixedly connected to the upper end of the support seat, a feed inlet is opened at the upper end of the heat preservation barrel, a heat conduction layer is provided on the inner wall of the heat preservation barrel, and a heating wire is embedded in the heat conduction layer; an injection molding mechanism, the injection molding mechanism is used to inject the melted material into the upper mold body; a stirring mechanism, the stirring mechanism is used to promote the melting of the material.

[0007] Preferably, the injection molding mechanism includes a pump body installed on the upper end of the horizontal plate, the liquid inlet end of the pump body extends to the inner bottom of the insulation barrel, and the liquid outlet end of the pump body is connected to the interior of the upper mold body through a hose.

[0008] Preferably, the stirring mechanism comprises a rotating shaft vertically arranged in the heat-insulating barrel, a stirring rod is provided at the upper end of the rotating shaft, and a rectangular groove is provided at the upper end of the stirring rod.

[0009] Preferably, a motor is installed at the upper end of the heat preservation barrel, and the output shaft of the motor is fixedly connected to a rectangular bar, and the lower end of the rectangular bar extends into the rectangular groove and is slidably connected to the rectangular groove.

[0010] Preferably, a mesh plate is provided in the heat preservation barrel, and the lower end of the rotating shaft is rotatably connected to the mesh plate.

[0011] Preferably, a second hydraulic telescopic rod is installed on the inner top of the heat preservation barrel, and the telescopic end of the second hydraulic telescopic rod is fixedly connected to the upper end of the mesh plate.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] A mesh plate is provided. During the melting process, the mesh plate is moved up so that the upper end surface of the mesh plate is located on the surface of the melted liquid. Then, the melting state can be judged by observing whether there are residual plastic particles on the upper surface of the mesh plate through the feed port. Whether the melting is complete can be judged intuitively. Due to the setting of the mesh plate, residual bubbles in the melted plastic can be filtered out to avoid the situation where bubbles affect subsequent injection molding. In addition, the second hydraulic telescopic rod can be used to allow multiple stirring rods to move up and down and rotate, further improving the stirring uniformity. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural schematic diagram of a high-toughness polyphenylene sulfide PPS material constant temperature insulation mold proposed by the utility model;

[0015] Figure 2 for Figure 1 A partial cross-sectional schematic diagram of

[0016] Figure 3 for Figure 2 Enlarged view of point A.

[0017] In the figure: 1 support seat, 2 lower mold body, 3 vertical plate, 4 horizontal plate, 5 pump body, 6 first hydraulic telescopic rod, 7 upper mold body, 8 hose, 9 insulation barrel, 10 motor, 11 feed port, 12 temperature conductive layer, 13 heating wire, 14 second hydraulic telescopic rod, 15 mesh plate, 16 rotating shaft, 17 stirring rod, 18 rectangular groove. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] Reference Figure 1-Figure 3 A high-toughness polyphenylene sulfide PPS material constant temperature insulation mold, including a support base 1, the upper end of the support base 1 is symmetrically fixedly connected with two vertical plates 3, the upper ends of the two vertical plates 3 are commonly fixedly connected with a horizontal plate 4, the lower end of the horizontal plate 4 is fixedly connected with a first hydraulic telescopic rod 6, the telescopic end of the first hydraulic telescopic rod 6 is fixedly connected with an upper mold body 7, and the upper end of the support base 1 is provided with a lower mold body 2;

[0020] The thermostatic melting mechanism includes a thermostatic barrel 9 fixedly connected to the upper end of the support base 1, a feed port 11 is provided at the upper end of the thermostatic barrel 9, a thermal conductive layer 12 is provided on the inner wall of the thermostatic barrel 9, and a heating wire 13 is embedded in the thermal conductive layer 12;

[0021] The mold body 7 further includes an injection molding mechanism, which is used to inject the melted material into the upper mold body 7. The injection molding mechanism includes a pump body 5 installed at the upper end of the horizontal plate 4. The liquid inlet end of the pump body 5 extends to the inner bottom of the insulation barrel 9. The liquid outlet end of the pump body 5 is connected to the upper mold body 7 through a hose 8.

[0022] The stirring mechanism is used to promote the melting of the material. The stirring mechanism includes a rotating shaft 16 vertically arranged in the heat preservation barrel 9. A stirring rod 17 is provided at the upper end of the rotating shaft 16. A rectangular groove 18 is provided at the upper end of the stirring rod 17. A motor 10 is installed at the upper end of the heat preservation barrel 9. The output shaft of the motor 10 is fixedly connected with a rectangular bar. The lower end of the rectangular bar extends into the rectangular groove 18 and is slidably connected with the rectangular groove 18.

[0023] Among them, a mesh plate 15 is arranged in the insulation barrel 9, and the mesh plate 15 is a plate body with many fine mesh holes thereon. The lower end of the rotating shaft 16 is rotatably connected to the mesh plate 15, and a second hydraulic telescopic rod 14 is installed on the inner top of the insulation barrel 9, and the telescopic end of the second hydraulic telescopic rod 14 is fixedly connected to the upper end of the mesh plate 15.

[0024] In the utility model, when in use, the staff puts polyphenylene sulfide PPS plastic particles from the feed port 11, then starts the internal electric heating wire 13, and starts the motor 10 at the same time. After the motor 10 is started, it will drive the rectangular bar to rotate, and the rotation of the rectangular bar will rotate the shaft 16, thereby rotating the multiple stirring rods 17, so that the plastic particles are evenly heated and melted as a whole, achieving the effect of constant temperature heating, and the setting of the heat preservation barrel 9 can avoid the temperature from spreading;

[0025] After a period of melting, the second hydraulic telescopic rod 14 can be started to shorten, so that the mesh plate 15 moves up to the maximum height (when adding materials, it is necessary to ensure that the height of the added materials after melting is lower than the maximum height of the mesh plate 15), and the upper end surface of the mesh plate 15 is located on the melting liquid surface. Then, the melting state can be judged by observing whether there are residual plastic particles on the upper surface of the mesh plate 15 through the feed port 11;

[0026] After the pump body 5 is started, the residual bubbles in the melted plastic can be filtered out due to the setting of the mesh plate 15, so as to avoid the bubbles affecting the subsequent injection molding.

[0027] It is worth mentioning here that after the above-mentioned motor 10 is started, the second hydraulic telescopic rod 14 can also be started to reciprocate up and down, and the mesh plate 15 can be used to drive the rotating shaft 16 to reciprocate up and down, so that multiple stirring rods 17 can be rotated up and down, further improving the stirring uniformity;

[0028] After the melting is completed, the upper mold body 7 and the lower mold body 2 are closed by using the first hydraulic telescopic rod 6, and then the pump body 5 is started to perform injection molding.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-toughness polyphenylene sulfide PPS material constant temperature insulation mold, characterized in that: include: A support seat (1), wherein the upper end of the support seat (1) is symmetrically fixedly connected to two vertical plates (3), the upper ends of the two vertical plates (3) are commonly fixedly connected to a horizontal plate (4), the lower end of the horizontal plate (4) is fixedly connected to a first hydraulic telescopic rod (6), the telescopic end of the first hydraulic telescopic rod (6) is fixedly connected to an upper mold body (7), and the upper end of the support seat (1) is provided with a lower mold body (2); A constant temperature melting mechanism, the constant temperature melting mechanism comprising a heat preservation barrel (9) fixedly connected to the upper end of the support seat (1), a feed port (11) being provided at the upper end of the heat preservation barrel (9), a heat conduction layer (12) being provided on the inner wall of the heat preservation barrel (9), and a heating wire (13) being embedded in the heat conduction layer (12); An injection molding mechanism, the injection molding mechanism being used to inject melted material into the interior of the upper mold body (7); A stirring mechanism is used to promote the melting of the material.

2. A high-toughness polyphenylene sulfide PPS material constant temperature insulation mold according to claim 1, characterized in that: The injection molding mechanism comprises a pump body (5) installed at the upper end of the horizontal plate (4), the liquid inlet end of the pump body (5) extends to the inner bottom of the heat preservation barrel (9), and the liquid outlet end of the pump body (5) is connected to the interior of the upper mold body (7) through a hose (8).

3. A high-toughness polyphenylene sulfide PPS material constant temperature insulation mold according to claim 1, characterized in that: The stirring mechanism comprises a rotating shaft (16) vertically arranged in the heat-insulating barrel (9), a stirring rod (17) is provided at the upper end of the rotating shaft (16), and a rectangular groove (18) is provided at the upper end of the stirring rod (17).

4. A high-toughness polyphenylene sulfide PPS material constant temperature insulation mold according to claim 3, characterized in that: A motor (10) is installed at the upper end of the heat preservation barrel (9), and the output shaft of the motor (10) is fixedly connected to a rectangular bar, and the lower end of the rectangular bar extends into the rectangular groove (18) and is slidably connected to the rectangular groove (18).

5. A high-toughness polyphenylene sulfide PPS material constant temperature insulation mold according to claim 3, characterized in that: A mesh plate (15) is arranged inside the heat preservation barrel (9), and the lower end of the rotating shaft (16) is rotatably connected to the mesh plate (15).

6. A high-toughness polyphenylene sulfide PPS material constant temperature insulation mold according to claim 5, characterized in that: A second hydraulic telescopic rod (14) is installed on the inner top of the heat preservation barrel (9), and the telescopic end of the second hydraulic telescopic rod (14) is fixedly connected to the upper end of the mesh plate (15).

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