Medical cleaning ball forming injection mold

Abstract

A medical cleaning ball forming injection mold comprises a cavity mold plate and a core mold plate, a hot runner system is arranged on the cavity mold plate, an upper cavity insert is arranged in the cavity mold plate, a lower cavity insert is arranged in the core mold plate, the upper cavity insert is matched with the lower cavity insert, a cleaning ball cavity surface is arranged in the upper cavity insert and the lower cavity insert, and a cleaning ball is arranged in the cleaning ball cavity surface. A mold core fixing plate is arranged below the mold core template, two mold feet are arranged below the mold core fixing plate, a mold core compound plate is arranged below the two mold feet, an upper ejection plate and a lower ejection plate are arranged between the two mold feet, ejection rods are arranged on the upper ejection plate and the lower ejection plate, and cleaning spherical cores are arranged at the heads of the ejection rods; a cleaning ball core penetrates through the core fixing plate and extends into the upper cavity insert and the lower cavity insert, a cleaning ball mold cavity is formed between the cleaning ball core and the cleaning ball mold cavity, the hot runner system is communicated with the cleaning ball mold cavity, an air channel is arranged in the ejector rod, an air blowing hole is formed in the cleaning ball core, an air inlet hole is formed in the lower ejector plate, and the air blowing hole, the air channel and the air inlet hole are communicated with one another. The air inlet is externally connected with an air source.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of forming injection mould of medical cleaning ball, belong to injection mould field. BACKGROUND

[0002] Plastic products are produced by injection mould, for example a kind of medical cleaning ball, according to product shape and structure analysis, cleaning ball is hollow spherical type, connect with pipe, therefore, joint of connecting pipe is provided on hollow spherical body. The traditional technology produces such product, generally adopts blow molding, but the product surface of blow molding is rough, wall thickness is uneven, especially the junction of joint and hollow spherical body is difficult to form, yield has not been high all the time, raw material is wasted greatly, and production cost is high. SUMMARY

[0003] The utility model aims at overcoming the shortcomings of prior art, provide a kind of forming injection mould of medical cleaning ball by injection mould injection molding, cost is saved, and efficiency is high.

[0004] To achieve the above object, the utility model adopts the following technical scheme:

[0005] A kind of forming injection mould of medical cleaning ball, including cavity template and core plate, hot runner system is provided on cavity template, upper cavity insert is provided in cavity template, lower cavity insert is provided in core plate, upper cavity insert is matched with lower cavity insert, and cleaning ball cavity surface is provided in upper cavity insert and lower cavity insert, core fixed plate is provided below core plate, two blocks of mould foot are provided below core fixed plate, core double plate is provided between two blocks of mould foot, upper top plate and lower top plate are provided between two blocks of mould foot, top rod is provided on upper top plate and lower top plate, the head of top rod is provided with cleaning ball core, cleaning ball core passes through core fixed plate and extends into upper cavity insert and lower cavity insert, and forms cleaning ball mould cavity between cleaning ball core and cleaning ball cavity surface, hot runner system is communicated with cleaning ball mould cavity, gas path is provided in top rod, blowing hole is provided in cleaning ball core, gas inlet is provided in lower top plate, blowing hole, gas path and gas inlet are communicated with each other, and gas inlet is connected with gas source.

[0006] Further, the top rod and cleaning ball core are provided with water path, water path plate is provided below lower top plate, water inlet is provided in water path plate, water inlet is communicated with water path, and connected with cooling water source.

[0007] Further, the hot runner system includes hot runner support provided on cavity template, cavity double plate is provided on hot runner support, gate is provided on cavity double plate, flow channel plate is provided in hot runner support, flow channel hole is provided in flow channel plate, needle valve type hot nozzle is connected below flow channel plate, gate, flow channel hole and needle valve type hot nozzle are communicated, and needle valve type hot nozzle is communicated with cleaning ball mould cavity.

[0008] Furthermore, the number of the upper cavity inserts and the lower cavity inserts is 1-32, and the number of the ejector pins and the cleaning ball cores corresponds to the number of the upper cavity inserts and the lower cavity inserts.

[0009] The beneficial effects of the utility model are:

[0010] Compared with the existing technology, first, the cleaning ball is injection molded with an injection mold, with a smooth surface and uniform wall thickness;

[0011] Easy to mold, especially the junction between the cleaning ball body and the joint, convenient injection molding and filling, high molding precision, high product yield, less raw material waste, and cost saving;

[0012] 3. The air blowing and expansion demoulding method is adopted, which makes demoulding easy;

[0013] 4. One mold with multiple cavities and high production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of an injection mold for a medical cleaning ball according to the utility model;

[0015] Figure 2 The utility model is a three-dimensional schematic diagram of a medical cleaning ball molding injection mold. DETAILED DESCRIPTION

[0016] The present invention will be described in detail below with reference to specific implementation cases. The following implementation cases will help those skilled in the art to further understand the present invention, but will not limit the present invention in any form.

[0017] like Figure 1 、 Figure 2 As shown, the utility model relates to a medical cleaning ball molding injection mold, including a cavity template 1 and a core template 2, a hot runner system is set on the cavity template 1, an upper cavity insert 3 is set in the cavity template 1, a lower cavity insert 5 is set in the core template 2, the upper cavity insert 3 cooperates with the lower cavity insert 5, and a cleaning ball cavity surface is set in the upper cavity insert 3 and the lower cavity insert 5, a core fixing plate 6 is set under the core template 2, two mold feet 7 are set under the core fixing plate, a core complex plate 8 is set under the two mold feet, and an upper top plate 9 and A lower top plate 10, an upper top plate 9 and a top rod 11 are provided on the lower top plate 10, and a cleaning spherical core 12 is provided on the head of the top rod. The cleaning spherical core 12 passes through the core fixing plate 8 and extends into the upper cavity insert 3 and the lower cavity insert 5, and forms a cleaning ball mold cavity 13 with the cleaning spherical cavity surface. The hot runner system is connected to the cleaning ball mold cavity 13, an air path 15 is provided in the top rod 11, a blowing hole 16 is provided in the cleaning spherical core 12, and an air inlet 17 is provided in the lower top plate 10. The blowing hole 16, the air path 15 and the air inlet 17 are connected to each other, and the air inlet 17 is connected to an external air source.

[0018] When injection molding, the molten plastic raw material is injected from the hot runner system into the cleaning ball mold cavity 13 to fill, maintain pressure and shape the cleaning ball mold cavity 13, obtain the medical cleaning ball 27, and then demold, the core mold plate 2 and the lower cavity insert 5 are separated from the upper cavity insert 3 and the cavity mold plate 1 by the power of the injection molding machine, the cleaning ball 27 remains on the cleaning ball core 12 and moves downward with the core mold plate 2 and the lower cavity insert 5. During the mold opening process, the lower platen 10 hits the ejection push rod of the injection molding machine, which drives the lower platen 10 and the ejector rod 11 on the upper platen 9 to move upward, causing the cleaning ball core 12 and the cleaning ball 27 on the ejector rod 11 to be ejected from the lower cavity insert 5. Then the air source works, blowing air through the air inlet hole 17, air path 15 and air blowing hole 16 against the inner wall of the cleaning ball 27, causing the cleaning ball 27 to expand and fall off the cleaning ball core 12, and the demolding is completed. In actual production, the plastic raw material of the present scheme is modified PVC material, the formed cleaning ball has a relatively thin wall thickness and good ductility, and when the cleaning ball is in an incomplete cooling and solidification state during the blowing demolding, the inner wall of the cleaning ball 27 is tightly attached to the cleaning ball core 12. When the cleaning ball is inflated, the entire ball body of the cleaning ball 27 is blown and falls off the cleaning ball core 12. During the blowing, a mechanical hand can be used to carry a receiving hopper to receive the blown cleaning ball 27, and the cleaning ball 27 can automatically recover to the pre-inflation state (size) under the action of the properties (ductility) of the modified PVC material. A processing procedure is completed. The present scheme uses injection molding and blowing expansion demolding, which is high in production efficiency and low in cost.

[0019] Further, the ejector rod 11 and the cleaning ball core 12 are provided with a water path 18, the lower platen 10 is provided with a water path plate 19, the water inlet hole 20 is provided in the water path plate 19, the water inlet hole 20 is communicated with the water path 19, and the water inlet hole 20 is externally connected with a cooling water source. After the product (cleaning ball) is injection molded, it needs to be cooled and shaped, but it cannot be completely shaped. The water path 18 is injected with cooling water, which can accelerate and control the shaping time of the product, reduce the shaping time, improve the production efficiency, control the cooling state of the product, and facilitate the blowing expansion of the product during demolding.

[0020] Further, the hot runner system comprises a hot runner support 21 arranged on the cavity plate 1, a cavity cover plate 22 arranged on the hot runner support, a gate 23 arranged on the cavity cover plate 22, a runner plate 24 arranged in the hot runner support 21, a runner hole 25 arranged in the runner plate 24, a needle valve hot nozzle 26 connected below the runner plate, the gate 23, the runner hole 25 and the needle valve hot nozzle 26 being communicated, and the needle valve hot nozzle 26 being communicated with the cleaning ball cavity 13. During injection molding, the molten plastic raw material enters from the gate 23, and is injected into the cleaning ball cavity 13 through the runner hole 25 and the needle valve hot nozzle 26. The needle valve hot nozzle 26 has the functions of automatic temperature control and material control, and can control the weight and temperature of the raw material injected into the cleaning ball cavity 13, thereby improving the good product yield of the product.

[0021] Further, the upper cavity insert 3 and the lower cavity insert 5 have 1-32, and the number of the ejector rod 11 and the cleaning ball core 12 corresponds to the number of the upper cavity insert 3 and the lower cavity insert 5, that is, 1-32 products can be produced at one time, and one mold has multiple cavities, thereby improving the production efficiency.

[0022] The above specific embodiments are used to explain and illustrate the present application, rather than limit the present application. Any modification and change made to the present application within the spirit and protection scope of the claims of the present application shall fall into the protection scope of the present application.

Claims

1. A medical cleaning ball molding injection mold, characterized in that The invention comprises a cavity template (1) and a core template (2), a hot runner system is arranged on the cavity template (1), an upper cavity insert (3) is arranged in the cavity template (1), a lower cavity insert (5) is arranged in the core template (2), the upper cavity insert (3) cooperates with the lower cavity insert (5), and a cleaning ball cavity surface is arranged in the upper cavity insert (3) and the lower cavity insert (5), a core fixing plate (6) is arranged under the core template (2), two mold feet (7) are arranged under the core fixing plate, a core double plate (8) is arranged under the two mold feet, an upper top plate (9) and a lower top plate (10) are arranged between the two mold feet, and the upper top plate (9) and the lower top plate are provided. A push rod (11) is provided on the plate (10), and a cleaning ball core (12) is provided on the head of the push rod. The cleaning ball core (12) passes through the core fixing plate (8) and extends into the upper cavity insert (3) and the lower cavity insert (5), and forms a cleaning ball mold cavity (13) with the cleaning ball cavity surface. The hot runner system is connected to the cleaning ball mold cavity (13). An air path (15) is provided in the push rod (11), an air blowing hole (16) is provided in the cleaning ball core (12), and an air inlet hole (17) is provided in the lower top plate (10). The air blowing hole (16), the air path (15) and the air inlet hole (17) are connected to each other, and the air inlet hole (17) is connected to an external air source.

2. A medical cleaning ball molding injection mold according to claim 1, characterized in that A water channel (18) is provided in the top rod (11) and the cleaning ball core (12), a water channel plate (19) is provided under the lower top plate (10), a water inlet hole (20) is provided in the water channel plate, and the water inlet hole (20) is communicated with the water channel (19) and is connected to an external cooling water source.

3. A medical cleaning ball molding injection mold according to claim 1, characterized in that The hot runner system includes a hot runner bracket (21) arranged on the cavity template (1), a cavity doubler plate (22) arranged on the hot runner bracket, a gate (23) arranged on the cavity doubler plate (22), a runner plate (24) arranged in the hot runner bracket (21), a runner hole (25) arranged in the runner plate (24), a needle valve hot nozzle (26) connected below the runner plate, the gate (23), the runner hole (25) and the needle valve hot nozzle (26) are connected, and the needle valve hot nozzle (26) is connected to the cleaning ball mold cavity (13).

4. The medical cleaning ball molding injection mold according to claim 1, characterized in that The number of the upper cavity inserts (3) and the lower cavity inserts (5) is 1-32, and the number of the ejector pins (11) and the cleaning ball cores (12) corresponds to the number of the upper cavity inserts (3) and the lower cavity inserts (5).

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