Plastic part forming mold

Abstract

The utility model belongs to the technical field of plastic part processing and producing molds, and particularly relates to a plastic part forming mold which comprises a lower mold core, a cavity is formed in the lower mold core, a plurality of T-shaped pipes are arranged in the cavity at equal intervals, a water return tank is fixedly connected to the bottom of the lower mold core, and a cooling tank is arranged at the bottom of the water return tank. The output end of the cooling box is fixedly connected with a water inlet box, first conveying pumps and second conveying pumps are arranged on the two sides of the water return box and the two sides of the water inlet box correspondingly, and the output ends of the first conveying pumps and the second conveying pumps on the two sides are fixedly connected to one ends of a return pipe and a conveying pipe. Input ends of the first delivery pump and the second delivery pump are communicated with the water return tank and the water inlet tank. According to the utility model, condensed water is introduced into the lower mold core from the inside of the water inlet tank to uniformly and quickly cool the mold, so that the heat can be quickly converted, the condensed water absorbs a large amount of heat in the moving process and is cooled, and then the condensed water is discharged through a thin opening at the tail end, so that the heat is uniformly dissipated to a greater extent; according to the cooling structure, a plurality of single-channel water passing groove structures are adopted, short-distance flowing of cold water can be achieved, and the heat exchange effect is stable.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plastic accessory processing and production mould, specifically to a plastic accessory forming die. BACKGROUND

[0002] The plastic mould is matched with the plastic forming machine in the plastic processing industry, and is a tool for giving the plastic product a complete configuration and accurate size, the conventional plastic product mould is matched with the male die assembly to form, and the hot melt plastic raw material is extruded to form, and the plastic product needs to be cooled completely after extrusion forming, and the cooling time is long, therefore, the plastic forming mould with rapid cooling function is in great demand.

[0003] The utility model discloses a kind of plastic accessory rapid forming injection mould, including bottom plate, the upper side of the bottom plate is equipped with horizontal plate, the top of the horizontal plate is fixedly connected with lower die holder, and the lower die holder is opened with annular cavity.This utility model is moved to the lower die holder by the second electric telescopic rod of starting, injection material is added to the lower die holder by injection tube, cold water is added to the connecting box, and the water pump is started to discharge cold water into annular cavity, cold water absorbs heat in plastic workpiece, fan blows, heat is discharged through air hole, and cold water falls into connecting box, so that a cycle is achieved, but comprehensive structure schematic diagram shows that, its cooling liquid delivery pipeline is flat, and it covers the range of entire mould, so its cooling liquid flow distance is extremely long, and in this flow process, cooling liquid is always heat exchanged with mould, heat in flow process only rises linearly, so that heat exchange efficiency is reduced, so cooling effect is different in different positions of cooling liquid flow, so that the cooling effect of plastic product is different, and different cooling temperature difference can cause plastic to be deformed, product quality is easily affected, so a plastic forming mould capable of uniform and stable cooling is needed to solve such problems. UTILITY MODEL CONTENTS

[0004] In view of the defects of the prior art, the utility model provides a plastic accessory forming die, which solves the problems that in the flow process, the cooling liquid is always heat exchanged with the mould, the heat in the flow process only rises linearly, the heat exchange efficiency is reduced, the cooling effect is different in different positions of the cooling liquid flow, and the cooling effect of the plastic product is different.

[0005] To achieve the above object, the utility model provides the following technical scheme: A plastic accessory forming die, including lower die, the inside of lower die is provided with chamber, the inside of chamber is provided with a plurality of T type pipes at equal intervals, the bottom of lower die is fixedly connected with backwater tank, the bottom of backwater tank is provided with cooling tank, the output of cooling tank is fixedly connected with water inlet tank, both sides of backwater tank and water inlet tank are provided with first delivery pump and second delivery pump respectively, the output of both sides first delivery pump and second delivery pump is fixedly connected in one end of backflow pipe and delivery pipe, the input of first delivery pump and second delivery pump is communicated with backwater tank and water inlet tank, one end of backflow pipe and delivery pipe all penetrates both sides of lower die and is fixedly connected with T type pipe, the just below of water inlet tank is provided with work table, the bottom of work table is provided with hydraulic cylinder.

[0006] As a preferred technical scheme of the utility model, the upper surface of the work table is welded with guide rods at the four corners, the guide rods are slidably connected at the four corners of the inside of the lower die, the top ends of the guide rods are bolted at the four corners of the bottom of the upper die, and a flow guide plate is welded at the middle of the upper surface of the lower die.

[0007] As a preferred technical scheme of the utility model, the bottom of the lower die is fixedly connected with ejector rods at the four corners, and the outside of the ejector rods is provided with compression springs.

[0008] As a preferred technical scheme of the utility model, the T type pipe is T-shaped, and the side edges of the T type pipe are closely fitted.

[0009] As a preferred technical scheme of the utility model, the inside of the upper die is provided with an injection molding hole, and the two ends of the injection molding hole penetrate the inside of the upper die and the die head and extend to the outside.

[0010] As a preferred technical scheme of the utility model, the outside of the backflow pipe and the delivery pipe is provided with a pressure gauge and a thermometer.

[0011] Compared with the prior art, the utility model provides a plastic accessory forming die, which has the following beneficial effects:

[0012] 1. The plastic accessory forming die can uniformly and quickly cool the die by introducing condensed water from the inside of the water inlet tank into the lower die, and the condensed water can absorb a large amount of heat during movement through the special design of the T type pipe, which can quickly convert heat, and the condensed water can be discharged through the small end to achieve uniform heat dissipation to a greater extent.

[0013] 2、The plastic accessory forming die, through cooling after completion, the thermometer monitors the internal temperature in real time, after the injection molding process is completed, the lower die core is lowered under the control of the hydraulic cylinder, so that the plastic accessory also descends, when the lower die core descends to the bottom, the ejector rod contacts the workbench surface, and the plastic accessory is ejected, which is simple in structure, convenient to operate, better meets the processing requirement, and brings convenience to the staff. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0015] Figure 2 It is a partial enlarged structure schematic view of the utility model;

[0016] Figure 3 It is a side view of the utility model;

[0017] Figure 4 It is a lower die core internal structure schematic view of the utility model;

[0018] Figure 5 It is an upper die core internal structure schematic view of the utility model.

[0019] In the drawing: 1, lower die core; 2, chamber; 3, T-shaped pipe; 4, guide plate; 5, backwater tank; 6, cooling tank; 7, water inlet tank; 8, first conveying pump; 9, second conveying pump; 10, thermometer; 11, pressure gauge; 12, backflow pipe; 13, conveying pipe; 14, guide rod; 15, hydraulic cylinder; 16, ejector rod; 17, compression spring; 18, workbench; 19, upper die core; 20, die head; 21, injection hole. DETAILED DESCRIPTION

[0020] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, instead of 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 protection scope of the utility model. Embodiment one

[0021] Please refer to Figures 1-4In the embodiment, the plastic accessory forming die comprises a lower die core 1, a chamber 2 is arranged in the lower die core 1, a plurality of T-shaped pipes 3 are equidistantly arranged in the chamber 2, a water return tank 5 is fixedly connected to the bottom of the lower die core 1, a cooling tank 6 is arranged at the bottom of the water return tank 5, an inlet water tank 7 is fixedly connected to the output end of the cooling tank 6, first and second delivery pumps 8 and 9 are arranged on the two sides of the water return tank 5 and the inlet water tank 7 respectively, the output ends of the first and second delivery pumps 8 and 9 are fixedly connected to one end of a return pipe 12 and a delivery pipe 13, the input ends of the first and second delivery pumps 8 and 9 are communicated with the water return tank 5 and the inlet water tank 7, one end of the return pipe 12 and the delivery pipe 13 penetrates through the two sides of the lower die core 1 and is fixedly connected to the T-shaped pipe 3, a workbench 18 is arranged below the inlet water tank 7, and a hydraulic cylinder 15 is arranged at the bottom end of the workbench 18.

[0022] In the embodiment, the second delivery pump 9 is opened, the condensed water is introduced from the inside of the inlet water tank 7 into the lower die core 1, the mold is uniformly and quickly cooled, through the special design of the T-shaped pipe 3, through the large-area short-distance contact, the heat is quickly converted, the condensed water absorbs a large amount of heat in the moving process, the temperature is lowered, and the condensed water is discharged through the end fine port, the heated area is reduced, the heat dissipation is more uniform, the cooling structure adopts the multiple single-channel water channel structure, the short-distance flow of the cold water can be realized, the heat exchange effect is stable, the water temperature difference between the inlet position and the outlet position is not too large due to the large conventional moving distance, and therefore the uniform water cooling is affected, the T-shaped structure can effectively ensure the sufficiency of the contact between the cold water and the mold and the uniformity of the heat exchange, the product cooling is uniform and stable, the deformation caused by the uneven heat is avoided, and therefore the product quality can be ensured.

[0023] Preferably, guide rods 14 are welded at the four corners of the upper surface of the workbench 18, the guide rods 14 are slidably connected to the four corners in the inside of the lower die core 1, the top ends of the guide rods 14 are connected to the four corners at the bottom end of an upper die core 19 through bolts, and a flow guide plate 4 is welded to the middle of the upper surface of the lower die core 1.

[0024] Preferably, guide rods 14 are welded at the four corners of the upper surface of the workbench 18, the guide rods 14 are slidably connected to the four corners in the inside of the lower die core 1, the top ends of the guide rods 14 are connected to the four corners at the bottom end of an upper die core 19 through bolts, and a flow guide plate 4 is welded to the middle of the upper surface of the lower die core 1.

[0025] Preferably, guide rods 14 are welded at the four corners of the upper surface of the workbench 18, the guide rods 14 are slidably connected to the four corners in the inside of the lower die core 1, the top ends of the guide rods 14 are connected to the four corners at the bottom end of an upper die core 19 through bolts, and a flow guide plate 4 is welded to the middle of the upper surface of the lower die core 1.

[0026] When the lower die core 1 drops to the bottom, the ejector rod 16 contacts the surface of the workbench 18, and the plastic part is ejected, the structure is simple, the operation is convenient, the processing requirements are better met, and the staff is facilitated.

[0027] Further, the T-shaped pipe 3 is T-shaped, and the side of the T-shaped pipe 3 is closely attached.

[0028] Wherein, through the special design of the T-shaped pipe 3, through the large-area short-distance contact, the heat is quickly converted, and the condensate water can flow in the inside of the lower die core 1, the condensate water is maximally contacted with the plastic, and the uniform cooling is carried out.

[0029] Further, the upper die core 19 is internally provided with the injection hole 21, and the two ends of the injection hole 21 respectively penetrate the inside of the upper die core 19 and the die head 20 and extend to the outside.

[0030] Wherein, the plastic solution can enter the inside of the lower die core 1 through the injection hole 21, which is convenient and fast and facilitates the control of the amount.

[0031] Preferably, the outside of the return pipe 12 and the conveying pipe 13 is provided with the pressure gauge 11 and the thermometer 10.

[0032] Wherein, for monitoring the water pressure, facilitating the control.

[0033] The working principle and use process of the utility model: the operator controls the lower mould core 1 to ascend along the guide rod 14 direction through the hydraulic cylinder 15, when the lower mould core 1 is tightly attached with the upper mould core 19, the staff starts to import plastic solution, and simultaneously opens the second delivery pump 9, imports the condensed water from the inside of the water inlet tank 7 to the lower mould core 1, carries out uniform and fast cooling work to the mould, through the special design of T pipe 3, through the contact of large area short distance, makes the heat rapid conversion, makes the condensed water absorb a large amount of heat in the process of moving, the device carries out temperature reduction, and then discharges through the end fine mouth, more uniform heat dissipation, the cooling structure passes through the adoption of multiple single-channel water channels structure, can realize the short distance flow of cold water, and the heat exchange effect is stable, and the water temperature difference of the water temperature of the water inlet position and the water temperature of the water outlet position caused by the too large conventional moving distance is not prone to, thereby the non-uniform water cooling condition is influenced, the T-shaped structure can effectively guarantee the sufficiency of cold water and mould contact and the uniformity of heat exchange, makes the product temperature reduction and cooling uniform and stable, avoids the deformation condition caused by the uneven heat, thereby can guarantee product quality, the hot water after heat transfer returns to the inside of the backwater tank 5, then carries out temperature reduction through the cooling tank 6, can realize the continuous cooling work to the mould, after cooling is completed, simultaneously the thermometer 10 carries out real-time monitoring to the inside temperature, after the injection moulding process is completed, the lower mould core 1 is controlled to descend by the hydraulic cylinder 15, makes the plastic parts also descend together, when the lower mould core 1 descends to the bottom, the ejector pin 16 contacts the workbench 18 surface, and the plastic parts are ejected.

[0034] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features. Any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model, should be included in the protection scope of the utility model.

Claims

1. A plastic parts molding die, comprising a lower die core (1), characterized in that: The lower mold core (1) has a cavity (2) inside, and several T-shaped tubes (3) are equidistantly arranged inside the cavity (2). A return water tank (5) is fixedly connected to the bottom of the lower mold core (1), and a cooling tank (6) is provided at the bottom of the return water tank (5). A water inlet tank (7) is fixedly connected to the output end of the cooling tank (6). A first delivery pump (8) and a second delivery pump (9) are respectively provided on both sides of the return water tank (5) and the water inlet tank (7). The output end of the second delivery pump (9) is fixedly connected to one end of the return pipe (12) and the delivery pipe (13). The input ends of the first delivery pump (8) and the second delivery pump (9) are connected to the return water tank (5) and the inlet water tank (7). One end of the return pipe (12) and the delivery pipe (13) passes through both sides of the lower mold core (1) and is fixedly connected to the T-shaped pipe (3). A workbench (18) is provided directly below the inlet water tank (7). A hydraulic cylinder (15) is provided at the bottom of the workbench (18).

2. The plastic part molding die according to claim 1, characterized in that: The workbench (18) has guide rods (14) welded at the four corners of its upper surface. The outer diameter of the guide rods (14) is slidably connected to the four corners of the lower mold core (1). The top of the guide rods (14) is connected to the four corners of the bottom of the upper mold core (19) by bolts. The lower mold core (1) has a flow guide plate (4) welded in the middle of its upper surface.

3. The plastic part molding die according to claim 1, characterized in that: The bottom corners of the lower mold core (1) are all fixedly connected with push rods (16), and compression springs (17) are provided on the outer side of each push rod (16).

4. The plastic part molding die according to claim 1, characterized in that: The T-shaped tube (3) is T-shaped, and the sides of the T-shaped tube (3) are tightly fitted together.

5. A plastic parts molding die according to claim 2, characterized in that: The upper mold core (19) has an injection hole (21) inside. The two ends of the injection hole (21) pass through the interior of the upper mold core (19) and the mold head (20) and extend to the outside.

6. A plastic parts molding die according to claim 1, characterized in that: Pressure gauges (11) and thermometers (10) are installed on the outside of both the return pipe (12) and the delivery pipe (13).

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