Heat conduction type plastic injection mold

Abstract

The utility model discloses a heat conduction type plastic injection mold which comprises a lower mold body, a supporting frame is fixed to the upper surface of the outer side of the lower mold body, two electric push rods are fixed to the upper surface of the supporting frame, the output ends of the electric push rods penetrate through the surface of the supporting frame, and the output ends of the electric push rods are fixedly connected with an upper mold body. A feeding groove is formed in the surface of the upper mold, a limiting supporting column is fixed to the side surface of the upper mold, and a buffering connecting box is fixed to the side surface of the lower mold. According to the heat conduction type plastic injection mold, a transmission gear and a linkage toothed plate are arranged, an electric push rod drives an upper mold to ascend and descend, so that raw materials are conveniently taken out, during machining, a piston rod is driven to descend through a limiting supporting column, the piston rod compresses buffering oil, buffering is achieved, and meanwhile the buffering oil pushes a friction sliding block to horizontally slide; and the friction sliding block brakes the piston rod, so that further deceleration buffering is facilitated, and the practicability of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plastics processing, in particular to a heat conduction formula plastic injection mold. BACKGROUND

[0002] The heat conduction formula plastic injection mold is a kind of injection mold in the process of plastic injection, utilize heat conduction principle to realize the heating of plastic melt, heat preservation and the temperature control of mold itself, heater is the key component of heat conduction formula injection mold, for generating heat, common heater has electric heating wire heater, electromagnetic heater etc., electric heating wire heater generates heat by electric current through resistance wire, simple structure, lower cost, heating temperature range is wider;Electromagnetic heater utilizes electromagnetic induction principle to generate heat, and heating efficiency is high, fast, and the control precision of temperature is also higher, the role of heat conduction plate or heating rod is to transfer the heat generated by heater to each part of mold, ensure that mold temperature is uniform, heat conduction plate is generally made of material with good heat conduction performance, such as aluminum alloy, copper etc.;Heating rod is a kind of rod-shaped heating element, can be directly inserted into the specified position of mold, and the local area is heated.

[0003] The existing plastic tray is produced, and the molten plastic raw material is injected into the cavity of mold by the screw of injection molding machine, and the injection pressure and speed are adjusted according to the characteristics of plastic raw material and the size of tray, so that the plastic can be filled in the cavity, when the tray is cooled and solidified, the mold is opened, and the tray is taken out from the mold, but the volume of plastic tray is large, so that there is large adhesion between tray and mold, and it is inconvenient to separate and take out. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a heat conduction formula plastic injection mold to solve the problem that the volume of plastic tray is large, so that there is large adhesion between tray and mold, and it is inconvenient to separate and take out.

[0005] To achieve the above object, the utility model provides the following technical scheme: A kind of heat conduction formula plastic injection mould, including lower mould, its outer side upper surface is fixed with support frame, the upper surface of the support frame is fixed with 2 electric push rods, the output end of the electric push rod penetrates the surface of support frame, and the output end of electric push rod is fixedly connected with upper mould, the surface of the upper mould is equipped with feed slot, the side surface of the upper mould is fixed with limit support column, the side surface of the lower mould is fixed with buffer connecting box, the upper surface of the buffer connecting box is provided with recess, and the inner wall of buffer connecting box recess is slidably connected with piston rod, the inner wall of buffer connecting box recess is equipped with friction sliding block, the lower end of the lower mould is provided with cavity, and the inner wall of the lower end cavity of the lower mould is provided with linkage ejection mechanism, it is moved by the rotation of transmission gear and linkage toothed plate and linkage piston column to guide air from air guide groove to support piston column and auxiliary ejector.

[0006] Preferably, the lower end of the feed slot is bifurcated, the limit support column is inverted L-shaped, and the lower end of the limit support column is provided with a tooth block.

[0007] The lower end of the feed slot is bifurcated to improve the uniformity of feeding, and the limit support column drives the transmission gear to rotate.

[0008] Preferably, the buffer connecting box recess is provided with buffer oil, the piston rod and the friction sliding block are perpendicular to each other, the buffer oil in the buffer connecting box is between the piston rod and the friction sliding block, and the upper end of the piston rod is fixedly connected to the lower surface of the limit support column.

[0009] The piston rod guides the buffer oil to the friction sliding block by sliding downward.

[0010] Preferably, the linkage ejection mechanism includes a transmission gear rotatably connected to the side surface of the lower mould, the side surface of the lower mould is provided with a recess, and the inner wall of the lower mould side surface recess is slidably connected with a linkage toothed plate, the lower surface of one end of the linkage toothed plate is fixedly connected with a linkage piston column, the lower end of the lower mould is internally provided with an air guide groove, the top surface of the air guide groove is slidably connected with a support piston column, and the upper end of the support piston column is fixedly connected with an auxiliary ejector.

[0011] The transmission gear rotates to drive the linkage toothed plate to move vertically by the linkage ejection mechanism.

[0012] Preferably, the transmission gear is meshingly connected to the limit support column through a tooth block, the linkage toothed plate is L-shaped, and the linkage toothed plate is meshingly connected to the transmission gear through a tooth block.

[0013] Adopting the technical scheme, through the movement of the linkage tooth plate, the linkage tooth plate pushes air into the air guide groove through the linkage piston column.

[0014] Preferably, the linkage tooth plate is connected with the lower mold through a spring, and the linkage piston column is connected with the air guide groove.

[0015] Adopting the technical scheme, through the air guide groove, air is guided to the support piston column, so that the support piston column drives the auxiliary ejection block to move.

[0016] Preferably, the support piston column is connected with the air guide groove through a spring, and the upper end of the auxiliary ejection block penetrates through the bottom surface of the upper end groove of the lower mold.

[0017] Adopting the technical scheme, through the upward sliding of the auxiliary ejection block, the auxiliary ejection block assists in ejecting the formed product.

[0018] Compared with the prior art, the heat conduction type plastic injection mold has the advantages that:

[0019] 1. The transmission gear and the linkage tooth plate are arranged, so that when the device works, the upper mold is lifted by the electric push rod, so that the raw materials are easily taken out, and when the device works, the piston rod is lowered by the limiting support column, so that the piston rod compresses the buffer oil, so that the buffer oil pushes the friction sliding block to slide horizontally, and the friction sliding block brakes the piston rod, so that further speed reduction and buffering are facilitated, and the practicability of the device is improved.

[0020] 2. The support piston column and the auxiliary ejection block are arranged, so that when the device works, the product is easily taken out by the upward movement of the upper mold, the limiting support column is upwardly slid to drive the transmission gear to rotate through the tooth block, the transmission gear drives the linkage tooth plate and the linkage piston column to downwardly slide, the linkage piston column guides air from the air guide groove to the support piston column, and finally the support piston column is pushed to drive the auxiliary ejection block to lift the product, so that the convenience of personnel in taking out the product is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a three-dimensional structure schematic view of the lower mold and the support frame connected in the utility model;

[0022] Figure 2 It is a three-dimensional structure schematic view of the electric push rod and the upper mold connected in the utility model;

[0023] Figure 3 It is a three-dimensional structure schematic view of the lower mold and the auxiliary ejection block connected in the utility model;

[0024] Figure 4 It is a three-dimensional structure schematic view of the lower mold and the air guide groove connected in the utility model;

[0025] Figure 5 The utility model discloses a linkage tooth plate and linkage piston column connection three-dimensional structure schematic diagram

[0026] Figure 6 The utility model discloses Figure 2 The utility model discloses an enlarged structure schematic diagram of A place in the middle.

[0027] In the drawing: 1, lower mould; 2, support frame; 3, electric push rod; 4, upper mould; 5, feed groove; 6, limiting support column; 7, buffer connecting box; 8, piston rod; 9, friction sliding block; 10, transmission gear; 11, linkage tooth plate; 12, linkage piston column; 13, gas guide groove; 14, support piston column; 15, auxiliary ejection. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not 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 scope of the utility model.

[0029] Please refer to Figures 1-6 The utility model provides a kind of technical solutions: a heat conduction formula plastic injection mould, including lower mould 1, support frame 2, electric push rod 3, upper mould 4, feed groove 5, limiting support column 6, buffer connecting box 7, piston rod 8, friction sliding block 9, transmission gear 10, linkage tooth plate 11, linkage piston column 12, gas guide groove 13, support piston column 14 and auxiliary ejection 15, lower mould 1, its outside upper surface is fixed with support frame 2, the upper surface of support frame 2 is fixed with 2 electric push rods 3, the lower end of feed groove 5 is bifurcate design, limiting support column 6 is inverted L type design, and the lower end side surface of limiting support column 6 is provided with tooth block, buffer connecting box 7 recess is provided with buffer oil, piston rod 8 and friction sliding block 9 are perpendicular to each other and are provided, buffer oil in buffer connecting box 7 is located between piston rod 8 and friction sliding block 9, the upper end of piston rod 8 is fixedly connected with the lower surface of limiting support column 6, the inside of lower mould 1 and upper mould 4 of the device is provided with electric heating wire and is heated, after the upper mould 4 is lowered and is combined with lower mould 1 by electric push rod 3, raw material is introduced by feed groove 5, and is cooled and formed in the recess of the upper end of lower mould 1.

[0030] The output end of the electric push rod 3 penetrates the surface of the support frame 2, and the output end of the electric push rod 3 is fixedly connected with the upper mold 4, the surface of the upper mold 4 is provided with a feeding groove 5, the linkage ejection mechanism comprises a transmission gear 10 which is rotatably connected to the side surface of the lower mold 1, the side surface of the lower mold 1 is provided with a groove, and the inner wall of the groove of the side surface of the lower mold 1 is slidably connected with a linkage toothed plate 11, the lower surface of one end of the linkage toothed plate 11 is fixedly connected with a linkage piston column 12, the inner part of the lower end of the lower mold 1 is provided with a gas guide groove 13, the top surface of the gas guide groove 13 is slidably connected with a supporting piston column 14, the upper end of the supporting piston column 14 is fixedly connected with an auxiliary ejection block 15, and the upper mold 4 is lowered while sliding downward, the upper mold 4 drives the limiting support column 6 and the piston rod 8 to descend, so that the piston rod 8 compresses the buffer oil to buffer, and at the same time, the buffer oil pushes the guide friction sliding block 9, which facilitates the friction sliding block 9 to brake the piston rod 8, so as to further buffer the piston rod 8, and reduce the impact damage of the device.

[0031] The side surface of the upper mold 4 is fixedly connected with the limiting support column 6, the side surface of the lower mold 1 is fixedly connected with the buffer connecting box 7, the upper surface of the buffer connecting box 7 is provided with a groove, and the inner wall of the groove of the buffer connecting box 7 is slidably connected with the piston rod 8, the inner wall of the groove of the buffer connecting box 7 is installed with the friction sliding block 9, the transmission gear 10 is meshingly connected with the limiting support column 6 through a tooth block, the linkage toothed plate 11 is designed in an L shape, and the linkage toothed plate 11 is meshingly connected with the transmission gear 10 through a tooth block, when the product needs to be taken out, the upper mold 4 is lifted by the electric push rod 3, at the same time, the upper mold 4 drives the transmission gear 10 to rotate through the tooth block of the limiting support column 6, and the transmission gear 10 drives the linkage toothed plate 11 to descend, so that the linkage toothed plate 11 drives the linkage piston column 12 to descend, and the linkage piston column 12 pushes the air from the gas guide groove 13 to the supporting piston column 14.

[0032] The lower end of the lower mold 1 is provided with a cavity, and the inner wall of the cavity of the lower end of the lower mold 1 is provided with the linkage ejection mechanism, which drives the linkage toothed plate 11 and the linkage piston column 12 to move by the rotation of the transmission gear 10 to guide the air from the gas guide groove 13 to the supporting piston column 14 and the auxiliary ejection block 15, the linkage toothed plate 11 is connected with the lower mold 1 through a spring, the linkage piston column 12 is communicated with the gas guide groove 13, the supporting piston column 14 is communicated with the gas guide groove 13, and the supporting piston column 14 and the gas guide groove 13 are connected through a spring, the upper end of the auxiliary ejection block 15 penetrates the bottom surface of the upper end groove of the lower mold 1, and the supporting piston column 14 drives the upper end auxiliary ejection block 15 to move after being pushed by the air, so that the auxiliary ejection block 15 lifts the product, and the convenience of taking out the product by personnel is improved.

[0033] Working principle: when the heat conduction type plastic injection mold is used, the upper mold 4 is driven to descend by the electric push rod 3, the electric heating wire inside the lower mold 1 and the upper mold 4 is used for heating and keeping warm, then the raw materials are introduced into the forming through the feeding groove 5, then the electric push rod 3 drives the upper mold 4 to ascend for taking materials, the transmission gear 10 is driven to rotate by the limiting support column 6, the transmission gear 10 drives the linkage tooth plate 11 and the linkage piston column 12 to descend, the linkage piston column 12 inflates the support piston column 14 through the air guide groove 13, finally the support piston column 14 drives the auxiliary ejection block 15 to push and eject the product, so that the materials are taken conveniently, the practicability is increased.

[0034] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat-conducting plastic injection mold, comprising a lower mold (1), a support frame (2) fixed on its outer upper surface, two electric push rods (3) fixed on the upper surface of the support frame (2), the output ends of the electric push rods (3) penetrating the surface of the support frame (2), and the output ends of the electric push rods (3) being fixedly connected to an upper mold (4), characterized in that: The surface of the upper mold (4) is provided with a feeding groove (5), the side surface of the upper mold (4) is fixedly provided with a limiting support column (6), the side surface of the lower mold (1) is fixedly provided with a buffering connecting box (7), the upper surface of the buffering connecting box (7) is provided with a groove, the inner wall of the groove of the buffering connecting box (7) is slidably connected with a piston rod (8), the inner wall of the groove of the buffering connecting box (7) is provided with a friction sliding block (9), the lower end of the lower mold (1) is provided with a cavity, and the inner wall of the cavity of the lower end of the lower mold (1) is provided with a linkage ejection mechanism.

2. A heat transfer plastic injection mold according to claim 1, wherein: The lower end of the feeding groove (5) is bifurcated, the limiting support column (6) is designed in an inverted L shape, and the side surface of the lower end of the limiting support column (6) is provided with a tooth block.

3. A heat transfer plastic injection mold according to claim 1, wherein: The buffering connecting box (7) is provided with buffering oil inside the groove, the piston rod (8) and the friction sliding block (9) are arranged perpendicularly to each other, the buffering oil in the buffering connecting box (7) is located between the piston rod (8) and the friction sliding block (9), and the upper end of the piston rod (8) is fixedly connected with the lower surface of the limiting support column (6).

4. The heat transfer plastic injection mold of claim 1, wherein: The linkage ejection mechanism comprises a transmission gear (10), the transmission gear (10) is rotatably connected to the side surface of the lower mold (1), the side surface of the lower mold (1) is provided with a groove, and the inner wall of the groove of the side surface of the lower mold (1) is slidably connected with a linkage toothed plate (11), one end of the linkage toothed plate (11) is fixedly provided with a linkage piston column (12), the lower end of the lower mold (1) is provided with a gas guide groove (13) inside, the top surface of the gas guide groove (13) is slidably connected with a supporting piston column (14), and the upper end of the supporting piston column (14) is fixedly provided with an auxiliary ejection block (15).

5. A heat transfer plastic injection mold according to claim 4, wherein: The transmission gear (10) is in meshing connection with the limiting support column (6) through the tooth block, the linkage toothed plate (11) is designed in an L shape, and the linkage toothed plate (11) is in meshing connection with the transmission gear (10) through the tooth block.

6. A heat transfer plastic injection mold according to claim 4, wherein: The linkage toothed plate (11) is connected with a spring between the linkage toothed plate (11) and the lower mold (1), and the linkage piston column (12) is in communication with the gas guide groove (13).

7. A heat transfer plastic injection mold according to claim 4, wherein: The supporting piston column (14) is in communication with the gas guide groove (13), and a spring is connected between the supporting piston column (14) and the gas guide groove (13), and the upper end of the auxiliary ejection block (15) penetrates through the bottom surface of the upper end groove of the lower mold (1).

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