Plastic forming mold

Abstract

The invention relates to the field of plastics, in particular to a plastic forming mold which comprises a circular ring support, a plurality of forming molds are fixedly connected to the circular ring support, and a pushing mechanism is fixedly connected to each forming mold. The forming die comprises an arc cavity, a plurality of forming holes are formed in the arc cavity, and an expansion sleeve is fixedly connected into each forming hole. The expansion sleeve is made of heat-resistant rubber; the arc cavities are fixedly connected to the circular ring support, and the multiple arc cavities are combined to form a circular cavity. A connecting cavity is fixedly connected to the arc cavity, and a water inlet pipeline and a water outlet pipeline are fixedly connected to the connecting cavity; and plastic particles with different diameters can be prepared according to different use requirements.

Description

Technical Field

[0001] The invention relates to the field of plastics, in particular to a plastic molding die. Background Art

[0002] A plastic mold is a tool used to produce plastic parts. The plastic raw materials are heated and melted, then injected into the mold and cooled to form the desired plastic product. For example, publication number CN206393870U discloses a foldable plastic mold that is convenient for collecting defective products, including a plastic mold lower mold, and a mold waste trough is provided at the bottom of the plastic mold lower mold. The disadvantage of this patent is that it is impossible to prepare plastic particles of different diameters according to different usage requirements. Summary of the invention

[0003] The object of the present invention is to provide a plastic forming die which can prepare plastic particles of different diameters according to different usage requirements.

[0004] The purpose of the present invention is achieved through the following technical solutions:

[0005] A plastic forming mold comprises a circular ring bracket, a plurality of forming molds are fixedly connected to the circular ring bracket, and a material pushing mechanism is fixedly connected to each forming mold;

[0006] The forming mold comprises an arc cavity, a plurality of forming holes are arranged on the arc cavity, and an expansion sleeve is fixedly connected in each forming hole;

[0007] The expansion sleeve is made of heat-resistant rubber;

[0008] The arc cavity is fixedly connected to the circular ring bracket, and a plurality of arc cavities are combined to form a circular cavity;

[0009] The arc cavity is fixedly connected to a connecting cavity, and the connecting cavity is fixedly connected to a water inlet pipe and a water outlet pipe;

[0010] The water outlet pipe is fixedly connected with a cut-off plate, the water outlet pipe is fixedly connected with a telescopic mechanism I, the telescopic end of the telescopic mechanism I is fixedly connected with a cut-off ball, the cut-off plate is provided with an arc hole, and the cut-off ball is received in the arc hole;

[0011] The intercepting ball is provided with a mounting groove, and a pressure sensor is arranged in the mounting groove;

[0012] The arc cavity is fixedly connected with an arc baffle, the pushing mechanism includes a material storage cavity, a pushing plate is slidably connected in the material storage cavity, the material storage cavity is fixedly connected to the arc cavity, the side of the material storage cavity is fitted with the arc baffle, the material storage cavity is fixedly connected with a telescopic mechanism II, the telescopic end of the telescopic mechanism II is fixedly connected with a material injection barrel, the lower end of the material injection barrel is fixedly connected to the pushing plate, the lower end of the material injection barrel is connected with the material storage cavity, the material injection barrel is fixedly connected with a connecting pipe, a rotating shaft is rotatably connected in the material injection barrel, and a driving motor for driving the rotating shaft to rotate is fixedly connected to the material injection barrel;

[0013] A plurality of plug posts are arranged at the lower end of the push plate, the positions of the plurality of plug posts and the plurality of expansion sleeves correspond to each other, and the plug posts can be inserted into the expansion sleeves;

[0014] A rotating shaft is rotatably connected between the multiple arc cavities, and a plurality of cutting tools are fixedly connected to the rotating shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0016] Figure 1 It is a schematic diagram of the structure of the plastic molding die of the present invention;

[0017] Figure 2 It is a schematic diagram of the combined structure of multiple molding dies of the present invention;

[0018] Figure 3 It is a schematic diagram of the structure of the cutting tool of the present invention;

[0019] Figure 4 It is a schematic diagram of the structure of the circular ring support of the present invention;

[0020] Figure 5 It is a schematic diagram of the molding die structure of the present invention;

[0021] Figure 6 It is a schematic diagram of the cross-sectional structure of the molding die of the present invention;

[0022] Figure 7 It is a schematic diagram of the structure of multiple material pushing mechanisms of the present invention;

[0023] Figure 8 It is a schematic diagram of the structure of the material pushing mechanism of the present invention;

[0024] Fig. 9 It is a schematic diagram of the cross-sectional structure of the material pushing mechanism of the present invention;

[0025] Fig.10 It is a structural schematic diagram of a push plate of the present invention.

[0026] In the figure: annular bracket 10; forming mold 20; arc cavity 21; expansion sleeve 22; arc baffle 23; connecting cavity 24; water inlet pipe 25; water outlet pipe 26; telescopic mechanism I 27; intercepting plate 28; intercepting ball 29; pushing mechanism 30; material storage cavity 31; pushing plate 32; plug column 33; telescopic mechanism II 34; injection barrel 35; connecting pipe 36; screw shaft 37; rotating shaft 41; cutting tool 42. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below with reference to the accompanying drawings.

[0028] like Figures 1 to 10 As shown, in order to achieve the technical effect of "being able to prepare plastic particles of different diameters according to different usage requirements", the structure and function of a plastic molding mold are described in detail below;

[0029] A plastic forming mold comprises a circular ring bracket 10, a plurality of forming molds 20 are fixedly connected to the circular ring bracket 10, and a material pushing mechanism 30 is fixedly connected to each forming mold 20;

[0030] The molding die 20 comprises a circular arc cavity 21, and a plurality of molding holes are arranged on the circular arc cavity 21, and an expansion sleeve 22 is fixedly connected in each molding hole;

[0031] The expansion sleeve 22 is made of heat-resistant rubber;

[0032] The arc cavity 21 is fixedly connected to the annular bracket 10, and a plurality of arc cavities 21 are combined to form a circular cavity;

[0033] The arc cavity 21 is fixedly connected to a connecting cavity 24, and the connecting cavity 24 is fixedly connected to a water inlet pipe 25 and a water outlet pipe 26;

[0034] The water outlet pipe 26 is fixedly connected with a cut-off plate 28, and the water outlet pipe 26 is fixedly connected with a telescopic mechanism I 27, and a cut-off ball 29 is fixedly connected to the telescopic end of the telescopic mechanism I 27. The cut-off plate 28 is provided with an arc hole, and the cut-off ball 29 is received in the arc hole.

[0035] The arc cavity 21 is fixedly connected with an arc baffle 23, and the pushing mechanism 30 includes a material storage cavity 31, a pushing plate 32 is slidably connected in the material storage cavity 31, the material storage cavity 31 is fixedly connected to the arc cavity 21, and the side of the material storage cavity 31 is in contact with the arc baffle 23, and a telescopic mechanism II 34 is fixedly connected to the material storage cavity 31, and a material injection barrel 35 is fixedly connected to the telescopic end of the telescopic mechanism II 34, and the lower end of the material injection barrel 35 is fixedly connected to the pushing plate 32, and the lower end of the material injection barrel 35 is connected to the material storage cavity 31, and a connecting pipe 36 is fixedly connected to the material injection barrel 35, and a rotating shaft 41 is rotatably connected in the material injection barrel 35, and a driving motor for driving the rotating shaft 41 to rotate is fixedly connected to the material injection barrel 35;

[0036] When in use, the cooling water pipeline is connected to the water inlet pipeline 25, the injection molding raw material pipeline is connected to the connecting pipeline 36, and the injection molding raw material is continuously introduced into the injection barrel 35. A heating mechanism is provided in the injection barrel 35, and the heating mechanism heats the injection molding raw material. The driving motor is started, and the driving motor can be fixedly connected to the injection barrel 35 by means of screws or the like. The output shaft of the driving motor starts to rotate, and the output shaft of the driving motor drives the rotating shaft 41 to rotate, so that the rotating shaft 41 rotates in the injection barrel 35. When the rotating shaft 41 rotates, a downward driving force is generated, so that the injection molding raw material enters the lower end storage cavity 31 of the push plate 32;

[0037] like Figure 2 As shown, the material storage cavity 31 is located on the upper side of the arc cavity 21, and the injection molding material in the material storage cavity 31 is discharged through the multiple expansion sleeves 22 on the arc cavity 21. A rotating shaft 41 is rotatably connected between the multiple arc cavities 21, and multiple cutting tools 42 are fixedly connected to the rotating shaft 41. A servo motor can be fixedly connected to one of the arc cavities 21, and the rotating shaft 41 is driven by the servo motor to rotate the rotating shaft 41, and the rotating shaft 41 drives the multiple cutting tools 42 to rotate, so that the cutting tools 42 cut the injection molding material discharged from the lower end of the expansion sleeve 22 to form injection molding particles;

[0038] Furthermore, when the diameter of the injection molded particles needs to be adjusted, such as Figure 6 As shown, cooling water is introduced into the connecting cavity 24 through the water inlet pipe 25, and the cooling water cools the expansion sleeve 22 to ensure that the expansion sleeve 22 is in a low temperature state. At the same time, the injection molding material passing through the expansion sleeve 22 is also cooled, and the telescopic mechanism I 27 is started. The telescopic mechanism I 27 can be a hydraulic cylinder or an electric push rod. The telescopic end of the telescopic mechanism I 27 drives the intercepting ball 29 to move, adjusts the position of the intercepting ball 29, adjusts the size of the arc hole on the intercepting plate 28, and adjusts the pressure of the cooling water in the connecting cavity 24 on the expansion sleeve 22, as shown in FIG. Figure 6As shown, the inner arc of the expansion sleeve 22 is set, and then the expansion sleeve 22 expands under the action of the cooling water pressure, so that the inner diameter of the expansion sleeve 22 becomes smaller, and then the injection molding raw material passing through is plasticized, so that plastic particles of different diameters can be prepared according to different usage requirements;

[0039] Furthermore, the intercepting ball 29 is provided with a mounting groove, in which a pressure sensor is provided, and the pressure in the connecting cavity 24 is fed back through the pressure sensor;

[0040] Furthermore, a plurality of plug posts 33 are provided at the lower end of the push plate 32, and the positions of the plurality of plug posts 33 and the plurality of expansion sleeves 22 correspond to each other, and the plug posts 33 can be inserted into the expansion sleeves 22;

[0041] When the injection molding is almost completed, the telescopic mechanism II34 is started. The telescopic mechanism II34 can be a hydraulic cylinder or an electric push rod. The telescopic end of the telescopic mechanism II34 drives the injection barrel 35 to move, and the injection barrel 35 drives the push plate 32 to move, so that the push plate 32 slides in the storage cavity 31, and then squeezes the remaining raw materials in the storage cavity 31, so that the raw materials in the storage cavity 31 can be completely discharged from the expansion sleeve 22, ensuring that there is no residual raw material in the storage cavity 31, and at the same time, the plug 33 can be inserted into the expansion sleeve 22, and the remaining raw materials in the expansion sleeve 22 are also discharged;

[0042] Furthermore, different types of injection molding materials can be placed in multiple pusher mechanisms 30, and the expansion sleeves 22 on multiple molding molds 20 can adjust different inner diameters, thereby completing the processing of multiple materials and multiple diameters at the same time to meet more usage requirements.

Claims

1. A plastic molding die, comprising a ring bracket (10), characterized in that: A plurality of forming dies (20) are fixedly connected to the circular ring bracket (10), and a material pushing mechanism (30) is fixedly connected to each forming die (20).

2. A plastic molding die according to claim 1, characterized in that: The forming die (20) comprises a circular arc cavity (21), a plurality of forming holes are arranged on the circular arc cavity (21), and an expansion sleeve (22) is fixedly connected to each forming hole.

3. A plastic molding die according to claim 2, characterized in that: The expansion sleeve (22) is made of heat-resistant rubber.

4. A plastic molding die according to claim 2, characterized in that: The circular arc cavity (21) is fixedly connected to the circular ring bracket (10), and a plurality of circular arc cavities (21) are combined to form a circular cavity.

5. A plastic molding die according to claim 2, characterized in that: The arc cavity (21) is fixedly connected to a connecting cavity (24), and the connecting cavity (24) is fixedly connected to a water inlet pipe (25) and a water outlet pipe (26).

6. A plastic molding die according to claim 5, characterized in that: A cut-off plate (28) is fixedly connected inside the water outlet pipe (26), a telescopic mechanism I (27) is fixedly connected to the water outlet pipe (26), a cut-off ball (29) is fixedly connected to the telescopic end of the telescopic mechanism I (27), a circular arc hole is provided on the cut-off plate (28), and the cut-off ball (29) is received in the circular arc hole.

7. A plastic molding die according to claim 6, characterized in that: The intercepting ball (29) is provided with a mounting groove, and a pressure sensor is arranged in the mounting groove.

8. A plastic molding die according to claim 2, characterized in that: The arc cavity (21) is fixedly connected to an arc baffle (23), the pushing mechanism (30) comprises a material storage cavity (31), a pushing plate (32) is slidably connected in the material storage cavity (31), the material storage cavity (31) is fixedly connected to the arc cavity (21), the side of the material storage cavity (31) and the arc baffle (23) are in contact, and a telescopic mechanism II (34) is fixedly connected to the material storage cavity (31), and the telescopic mechanism II ( A material injection barrel (35) is fixedly connected to the telescopic end of the material injection barrel (34), the lower end of the material injection barrel (35) is fixedly connected to the push plate (32), the lower end of the material injection barrel (35) is connected to the material storage cavity (31), a connecting pipe (36) is fixedly connected to the material injection barrel (35), a rotating shaft (41) is rotatably connected inside the material injection barrel (35), and a driving motor for driving the rotating shaft (41) to rotate is fixedly connected to the material injection barrel (35).

9. A plastic molding die according to claim 8, characterized in that: A plurality of inserting posts (33) are arranged at the lower end of the push plate (32); the positions of the plurality of inserting posts (33) and the plurality of expansion sleeves (22) correspond to each other; and the inserting posts (33) can be inserted into the expansion sleeves (22).

10. A plastic molding die according to claim 2, characterized in that: A rotating shaft (41) is rotatably connected between the plurality of circular arc cavities (21), and a plurality of cutting tools (42) are fixedly connected to the rotating shaft (41).

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