CN210359194U

CN210359194U - Runner structure and zinc alloy forming die

Info

Publication number: CN210359194U
Application number: CN201920770525.1U
Authority: CN
Inventors: 陈荣才
Original assignee: Shenzhen City Baotian Precision Plastic Mould Co ltd
Current assignee: Shenzhen City Baotian Precision Plastic Mould Co ltd
Priority date: 2019-05-26
Filing date: 2019-05-26
Publication date: 2020-04-21
Anticipated expiration: 2029-05-26

Abstract

The utility model discloses a runner structure and zinc alloy forming die, the runner structure is seted up in zinc alloy forming die, the runner structure is arranged in carrying the metal liquid to advancing jiao kou of each die cavity structure among the zinc alloy forming die, the runner structure includes: a main flow channel; the runner, will the sprue with advance gluey mouth intercommunication, the runner includes anterior segment runner and back end runner, anterior segment runner intercommunication the sprue with the back end runner, the anterior segment runner is the curve runner, the back end runner with advance gluey mouth and be connected, the size of back end runner is in the orientation the size of anterior segment runner is crescent in the direction. The utility model provides a zinc alloy forming die's runner structure makes the interior molten metal of runner can be smooth and easy flow in the die cavity structure, has reduced bad phenomena such as molten metal backward flow, promotes the quality of shaping product.

Description

Runner structure and zinc alloy forming die

Technical Field

The utility model relates to a metal forming technology field especially relates to a runner structure and zinc alloy forming die.

Background

The metal die casting is a process of filling molten metal into a die-casting die cavity at a high speed under a high pressure, and solidifying the molten metal under a high pressure state to form a metal die casting, and is one of the most efficient metal forming and casting methods at present.

In the case of common molding of multi-mold products, the molten metal filling time of a multi-cavity is likely to deviate according to the balance degree of a flow channel, and it is very important to maintain the flow balance of molten metal in the die-casting molding process. The smoothness of the molten metal flow is a key factor of the flow balance of the molten metal. The flow channel of the conventional zinc alloy forming die is designed to be straight and single, and when molten metal is fed, the molten metal flows unsmoothly, the resistance to the flow of the molten metal is high, so that adverse effects such as backflow and the like are easy to occur, and the quality of a formed product is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a runner structure and zinc alloy forming die aims at solving current zinc alloy forming die's the metal liquid feed and flows the problem that is not smooth and easy.

According to the embodiment of the application, a flow channel structure is provided, flow channel structure sets up in zinc alloy forming die, flow channel structure is arranged in advancing jiao kou with each die cavity structure in carrying zinc alloy forming die with the molten metal, flow channel structure includes: a main flow channel; the runner, will the sprue with advance gluey mouth intercommunication, the runner includes anterior segment runner and back end runner, anterior segment runner intercommunication the sprue with the back end runner, the anterior segment runner is the curve runner, the back end runner with advance gluey mouth and be connected, the size of back end runner is in the orientation the size of anterior segment runner is crescent in the direction.

The utility model discloses an among the runner structure, the back end runner includes: the drainage cavity is connected with the front section runner; the guide cavity is connected with the drainage cavity and the glue inlet, and the thickness of the drainage cavity is larger than that of the guide cavity.

The utility model discloses an among the runner structure, the both ends in direction chamber with advance the junction perpendicular to of jiao kou advance jiao kou.

The utility model discloses an among the runner structure, the thickness in direction chamber is keeping away from the direction in drainage chamber reduces gradually.

The utility model discloses an among the runner structure, the back end runner still includes: the thickened part is arranged at the tail end of the rear section runner; the depth of the thickened portion is greater than the depth of the guide portion.

The utility model discloses an in the runner structure, it establishes to advance gluey mouth on the arc surface of die cavity structure.

The utility model discloses an among the runner structure, the direction chamber with advance the junction of jiao kou be equipped with one with circular arc surface vertically inclined plane.

The utility model discloses an among the runner structure, the runner structure still includes the changeover portion, connects the sprue with the subchannel.

The utility model discloses an among the runner structure, the sprue is cylindrical runner, the diameter of sprue is at the orientation increase gradually in the direction of subchannel.

The utility model discloses still provide a zinc alloy forming die, including above-mentioned runner structure.

The technical scheme provided by the embodiment of the application can have the following beneficial effects: the application designs a zinc alloy forming die's runner structure, through curved anterior segment runner and the back end runner that becomes the angle setting with the cavity structure for in the molten metal in the runner can be smooth and easy flows into the cavity structure, reduced bad phenomena such as molten metal backward flow, promote the quality of shaping product.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.

Fig. 1 is a schematic structural diagram of a zinc alloy forming die according to an embodiment of the present invention;

FIG. 2 is a partial cross-sectional view of the zinc alloy forming die of FIG. 1 at A-A;

fig. 3 is a schematic view of a hot runner system according to an embodiment of the present invention;

fig. 4 is a cross-sectional view of a hot-runner system in accordance with an embodiment of the present invention;

fig. 5 is an exploded view of a manifold structure according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a view angle of the main body of the flow distribution plate according to the embodiment of the present invention;

fig. 7 is a sectional view of a hot nozzle main body of a zinc alloy forming die according to an embodiment of the present invention;

FIG. 8 is a schematic view of a flow channel structure of a conventional zinc alloy forming die;

fig. 9 is a schematic view of a flow channel structure of a zinc alloy forming die according to an embodiment of the present invention;

fig. 10 is a schematic view of a flow channel structure of a zinc alloy forming die according to another embodiment of the present invention;

fig. 11 is a schematic view of a flow channel structure of a zinc alloy forming mold according to an embodiment of the present invention;

fig. 12 is another view structural diagram of the flow channel structure of the zinc alloy forming mold according to the embodiment of the present invention;

fig. 13 is an enlarged view at a in the flow passage structure of the zinc alloy molding die in fig. 12;

fig. 14 is an enlarged view at B in the flow passage structure of the zinc alloy molding die of fig. 11;

fig. 15 is a schematic view of an exhaust structure of a zinc alloy forming die according to an embodiment of the present invention;

fig. 16 is a schematic sectional view of an exhaust structure of a zinc alloy forming die according to another embodiment of the present invention;

fig. 17 is a schematic sectional view of an exhaust structure of a zinc alloy forming die according to another embodiment of the present invention;

FIG. 18 is an enlarged view at C of the vent structure of the zinc alloy forming die of FIG. 17;

FIG. 19 is an enlarged view at D of the vent structure of the zinc alloy forming die of FIG. 15;

fig. 20 is a schematic view of an exhaust structure of a zinc alloy forming die according to another embodiment of the present invention;

FIG. 21 is an enlarged view at F of the vent structure of the zinc alloy forming die of FIG. 20;

fig. 22 is a schematic view of a venting structure of a zinc alloy forming die according to an embodiment of the present invention;

fig. 23 is an enlarged view at E in the exhaust structure of the zinc alloy forming die of fig. 19.

Description of reference numerals:

10. a hot runner system; 11. a diverter plate body; 111. a flow distribution plate flow passage; 1111. an inlet flow passage; 1112. An outlet flow passage; 1113. connecting the flow channel; 112. mounting holes; 113. grooving; 1131. a first slot; 1132. a second slot; 1133. a third slot is formed; 114. a front side; 115. a rear side; 116. fixing grooves; 12. a hot nozzle body; 121. an installation step; 122. a heating stage; 123. a hot nozzle runner; 124. a collar; 125. a hot nozzle sleeve; 1251. an opening; 1252. accommodating grooves; 1253. a guide portion; 126. a main flow passage part; 13. a flow channel structure; 131. a main flow channel; 132. a shunt channel; 1321. a front section runner; 1322. a rear section runner; 13221. a drainage lumen; 13222. a guide cavity; 13223. a front end junction; 13224. a rear end junction; 13225. a bevel; 1323. thickening part; 133. a transition flow channel; 30. an exhaust structure; 31. an exhaust chamber; 311. a first stage exhaust chamber; 312. a second stage exhaust cavity; 313. a third stage exhaust chamber; 314. a transition chamber; 315. an auxiliary exhaust chamber; 316. an exhaust groove; 40. a cavity structure; 41. a circular arc surface; 50. a heating section; 51. a diverter plate heating section; 52. a hot nozzle heating part; 60. a temperature sensing unit; 61. a temperature sensing part of the flow distribution plate; 611. a first temperature sensing member; 612. a second temperature sensing member; 613. a third temperature sensing element; 62. a hot nozzle temperature sensing part; 70. A front mold frame; 80. a rear mould frame; 90. a front mold fixing plate; 100. a rear mold fixing plate; 200. and (5) a main filling nozzle.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be further understood that the term "and/or" as used in the specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

Referring to fig. 1 and 2, a zinc alloy forming mold according to an embodiment of the present disclosure includes a hot runner system 10, an exhaust structure 30, a cavity structure 40, a front mold frame 70, a rear mold frame 80, a front mold fixing plate 90, a rear mold fixing plate 100, and a main filling nozzle 200. The front mold frame 70, the rear mold frame 80, the front mold fixing plate 90 and the rear mold fixing plate 100 are used to mount the hot runner system 10, the exhaust structure 30 and the cavity structure 40. The hot runner system 10 is connected to the cavity structure 40, and the exhaust structure 30 is connected to the cavity structure 40. Molten metal raw materials in the gun nozzle of the zinc alloy forming die flow into the hot runner system 10 from the main pouring nozzle 200, then flow into the glue inlet of the cavity structure 40 from the hot runner system 10, and then molten metal is injected into the cavity structure 40 to form a product. When the product is formed, the excessive molten metal flows into the exhaust structure 30 from the cavity structure 40 to form exhaust slag. In this embodiment, the molten metal is a molten zinc alloy.

Referring to fig. 3-5, in an alternative embodiment, the hot runner system 10 includes a manifold body 11, at least two hot nozzle bodies 12, a heating portion 50, a temperature sensing portion 60, and a flow passage structure 13; at least two hot nozzle bodies 12 are connected to the flow distribution plate body 11, and the number of the hot nozzle bodies 12 is two in the present embodiment, it is understood that the number of the hot nozzle bodies 12 may be three, four, etc.; the heating part is simultaneously connected with the flow distribution plate main body 11 and the hot nozzle main body 12, and the heating part 50 is used for heating the flow distribution plate main body 11 and the hot nozzle main body 12; the temperature sensing part is connected with the surface of the flow distribution plate body 11 and the surface of the hot nozzle body 12 at the same time, and is used for detecting the temperature of the flow distribution plate body 11 and the hot nozzle body 12. The runner structure 13 is used for connecting the hot nozzle main body 12 with the glue inlet of the cavity structure 40, and when the mold operates, the molten metal sequentially passes through the flow distribution plate main body 11, the hot nozzle main body 12 and the runner structure 13 and finally enters the cavity structure 40.

The flow distribution plate main body 11 includes a flow distribution plate flow passage 111 and a mounting hole 112 provided therein. The flow distribution plate channel 111 is disposed in the middle of the flow distribution plate main body 11, the flow distribution plate channel 111 includes an inlet channel 1111, at least two outlet channels 1112, and a connecting channel 1113 connecting the inlet channel 1111 and the outlet channels 1112, the connecting channel 1113 is disposed along the length direction of the flow distribution plate main body 11, and the at least two outlet channels 1112 are in one-to-one correspondence with the at least two hot nozzle main bodies 12. The molten metal in the flow distribution plate flow channel 111 enters the connecting flow channel 1113 from the inlet flow channel 1111 and finally flows out from the at least two outlet flow channels 1112 respectively to flow into the at least two hot nozzle bodies 12.

Referring to fig. 5, the mounting holes 112 are disposed along the length direction of the flow distribution plate body 11 and penetrate through two ends of the flow distribution plate body 11, and the mounting holes 112 are used for placing the heating portion 50. The connecting flow path 1113 is provided along the longitudinal direction of the flow distribution plate body 11, so that the heating part 50 placed in the mounting hole 112 is parallel to the connecting flow path 1113, the distances from the parts of the heating part 50 in the mounting hole 112 to the connecting flow path 1113 are equal, and the heating part 50 has a uniform heating effect on the molten metal in the connecting flow path 1113. The heating unit 50 heats the flow distribution plate body 11 from the inside, and the temperature transmission effect is more excellent. Compare and locate the scheme of flow distribution plate surface with the heating member in market, heating portion is fast to 11 rate of heating of flow distribution plate main part among the technical scheme of this application, and heating efficiency is high.

The number of the mounting holes 112 is set to two, and the two mounting holes 112 are symmetrically arranged with respect to the flow distribution plate flow passage 111 in the width direction of the flow distribution plate main body 11. The heating portions 50 are disposed inside the two mounting holes 112 to heat the liquid in the flow dividing plate flow channel 111 from two positions, so that the heating effect is better and the heating efficiency is high.

Referring to fig. 4, 5 and 6, a plurality of slots 113 are arranged at different positions of the splitter plate main body 11, and are used for installing temperature sensing parts, and the temperature sensing parts detect the temperatures at different positions of the splitter plate main body 11 from different positions, and compared with a scheme that only one position on the splitter plate main body 11 is tested in the prior art, the technical scheme of the application monitors the temperatures at multiple positions of the splitter plate main body 11, and is beneficial to monitoring the temperature of the molten metal in the flow channel 111 of the splitter plate.

The slots 113 include two first slots 1131, two second slots 1132, and a third slot 1133, which are all opened along the length direction of the splitter plate body 11, that is, the first slots 1131, the second slots 1132, and the third slots 1133 are all parallel to the splitter plate flow channel 111 and the heating portion disposed in the mounting hole 112, so that the distances between the slots and the splitter plate flow channel 111 are equal, which eliminates the influence of temperature variation at multiple positions of the splitter plate flow channel 111, and makes the test result of each position more accurate.

The two first slots 1131 are disposed on the same side of the flow distribution plate body 11 and are symmetrically disposed about the inlet channel 1111, that is, the temperature sensing portion in each first slot 1131 is respectively used for detecting the temperature of the molten metal in one half of the connecting channel 1113. The two half connecting runners 1113 are connected to the two hot nozzle bodies 12 through the outlet runners 1112, and each hot nozzle body 12 corresponds to four cavity structures 40, so that the temperature of the molten metal in each half connecting runner 1113 is related to the quality of the corresponding four molded products. When the product of the cavity structure 40 corresponding to the same hot nozzle body 12 is abnormal, the temperature detected by the temperature sensing part in the corresponding first slot 1131 is also abnormal, so that the user can conveniently monitor the mold.

Referring to fig. 4 and 5, the two first slots 1131 are arranged in a straight line, and the length of the first slot 1131 is approximately half of the length of the connecting flow channel 1113, that is, the total length of the first slot 1131 is approximately equal to the length of the connecting flow channel 1113, so that the end of the first slot 1131 is arranged at a position near the end of the connecting flow channel 1113, and at this time, the temperature sensing part in the first slot 1131 is closest to the connecting flow channel 1113, and the temperature to be tested is also closer to the temperature of the molten metal in the connecting flow channel 1113. If the length of the first slot 1131 is too long, the length of the temperature sensing portion in the first slot 1131 is also longer, which wastes material and causes inaccurate temperature measurement.

Referring to fig. 5 and 6, the second slot 1132 is disposed on the side of the diverter plate body 11 opposite the first slot 1131. Such as a first slot 1131 disposed on the front side 116 of the diverter plate body 11 and a second slot 1132 disposed on the back side 117 of the diverter plate body 11. The length of the second slot 1132 is smaller than that of the first slot 1131, and the second slot 1132 is disposed near the positions of both ends of the connecting flow passage 1113, so that the temperature sensing part in the second slot 1132 detects the temperature of the molten metal at the positions of both ends of the connecting flow passage 1113 from another position. Because the two mounting holes 112 are symmetrically arranged, the temperatures of the front side surface 116 and the rear side surface 117 of the flow distribution plate main body 11 are close, so that the temperature tested at the second slot 1132 is close to the temperature tested at the first slot 1131, and by comparing the test result of the temperature sensing part in the second slot 1132 with the test result of the temperature sensing part in the first slot 1131, whether the heating part in the mounting hole 112 is abnormal or not can be determined, if the heating part in a certain mounting hole 112 is in fault, the test result of the temperature sensing part in the second slot 1132 and the test result of the temperature sensing part in the first slot 1131 have a large difference.

The third slot 1133 is disposed on the front side 116 or the rear side 117 of the diverter plate body 11, with the third slot 1133 generally facing an end of the inlet channel 1111. At this time, the temperature sensing portion in the third groove 1133 is closest to the end position of the nozzle runner, and the temperature at the inlet runner 1111 is detected, and if the temperature is abnormal, it is described that the portion of the mold that heats the raw material to the molten metal is abnormal.

It is understood that in some embodiments, the second slot 1132 and the temperature sensing portion within the second slot 1132 may not be provided. The temperature sensing parts in the third groove 1133 and the third groove 1133 may not be provided, and the temperature of the connection flow passage 1113 may be detected only by the temperature sensing part in the first groove 1131.

Referring to fig. 4 and 7, the hot nozzle body 12 is a stepped shaft structure, and the hot nozzle body 12 includes a mounting step 121 and a heating step 122, and the diameter of the heating step 122 is smaller than that of the mounting step 121. The mounting step 121 is connected to the manifold body 11, and the heating unit is provided outside the heating step 122 to heat the nozzle body 12. The surface of the heating step 122 is further provided with an installation groove (not shown), and the installation groove is used for placing the temperature sensing part 60, so as to detect the temperature of the hot nozzle main body 12. The hot nozzle flow passage 123 is formed inside the hot nozzle main body 12, and the hot nozzle flow passage 123 inside the hot nozzle main body 12 is connected with the outlet flow passage 1112 in the flow distribution plate flow passage 111. The molten metal flows from the manifold channel 111 into the hot tip channel 123, then from the hot tip channel 123 into the channel structure 13, and then into each cavity structure 40 to mold the product. The zinc alloy mold commonly used at present usually adopts a cold runner structure of the main runner 131, so that the produced nozzle has larger volume and heavier weight. The hot runner structure with at least two hot nozzle main bodies 12 is adopted in the scheme, and each of the at least two hot nozzle main bodies 12 is connected with the same number of cavity structures 40, so that the size of the main runner 131 is greatly smaller, the sum of the weight of the water gaps formed by the at least two main runners 131 is also greatly smaller than the weight of the water gaps generated by the existing cold runner structure, and the weight of the water gaps is reduced from 135g to 70g, so that the cost is saved.

Referring to fig. 3, 8 and 9, in the zinc alloy mold of the conventional single hot nozzle cold runner structure, the cross-sectional area of the single main runner 131a needs to be larger than the sum of the cross-sectional areas of the eight branch runners, so that the size of the single main runner 131a is very large, the size of the nozzle is also huge, raw materials are wasted, and the molding time is also long. Each hot nozzle body 12 in this embodiment is connected to one main runner 131, each main runner 131 is connected to four sub-runners 132, and each sub-runner 132 is connected to one cavity structure 40 to mold a product. The cross-sectional area of the main flow channel 131 corresponding to each hot nozzle main body 12 is larger than the sum of the cross-sectional areas of the four branch channels 132, so that the volume and the weight of the raw materials are reduced.

Referring to fig. 7, in an alternative embodiment, nozzle body 12 further includes a sprue portion 126 disposed adjacent to heating step 122, a sprue 131 of the mold is disposed inside sprue portion 126, and sprue 131 communicates with nozzle runner 123. The main flow passage portion 126 is integrally provided with the heating step 122.

Referring to fig. 7 again, in an alternative embodiment, the heating portion 50 outside the heating step 122 is an annular heating ring wound around the heating step 122, and the annular heating ring heats the nozzle body 12 from the circumference of the nozzle body 12, so as to heat the nozzle body 12 uniformly, ensure the temperature of the nozzle body 12, and improve the quality of the molded product. A collar 124 is further sleeved outside the heating portion outside the heating step 122, and the collar 124 is connected with the hot nozzle body 12. The collar 124 is disposed on the exterior of the heating portion to protect the heating portion and the hot nozzle body 12.

Referring to fig. 1, 2 and 7, the hot nozzle body 12 further includes a hot nozzle sleeve 125, and the hot nozzle sleeve 125 abuts against the front mold frame 70 of the mold. The front mold frame 70 is provided with a hot nozzle slot (not labeled in fig. 2), the hot nozzle sleeve 125 is installed at the position of the hot nozzle slot, and the heating step 122 of the hot nozzle main body 12 sequentially penetrates through the hot nozzle sleeve 125 and the hot nozzle slot. The hot nozzle sleeve 125 is provided with a through hole (not labeled in the figure) for the heating step 122 to pass through, and the diameter of the through hole is larger than the diameter of the heating step 122 and smaller than the diameter of the installation step 121, so that the end surface of the installation step 121 close to the heating step 122 is attached to the end surface of the hot nozzle sleeve 125, and the installation step 121 is connected with the front mold frame 70 through the hot nozzle sleeve 125. If the nozzle cover 125 is not provided, the nozzle body 12 may be damaged after a long-term use of the mold, and the nozzle body 12 needs to be replaced, which increases maintenance costs.

The nozzle casing 125 is provided with a receiving groove 1252, the mounting step 121 is placed in the receiving groove 1252, and the outer wall of the mounting step 121 is in clearance fit with the side wall of the receiving groove 1252. An opening 1251 is provided on a side wall of the hot nozzle cover 125, and the heating part and the temperature sensing part protrude from the opening 1251. A guide portion 1253 is further provided at the opening 1251 of the receiving groove 1252, and the guide portion 1253 functions to facilitate the mounting of the mounting step 121 to the receiving groove 1252. The guiding portion 1253 may be a chamfer structure or other structures, which is not limited herein.

Referring to fig. 5 and 7, the heating portion 50 includes a flow distribution plate heating portion 51 and a hot nozzle heating portion 52, the flow distribution plate heating portion 51 is disposed in the mounting hole 112, the flow distribution plate heating portion 51 is used for heating the flow distribution plate main body 11, and the hot nozzle heating portion 52 is fitted over the heating step 122 of the hot nozzle main body 12 to heat the hot nozzle main body 12. The hot nozzle heating portion 52 extends the hot nozzle jacket 125 from the opening 1251.

Referring to fig. 4, 5, 6 and 7 again, the temperature sensing part 60 includes a temperature sensing part 61 of the diversion plate and a temperature sensing part 62 of the hot nozzle, and the temperature sensing part 61 of the diversion plate includes a first temperature sensing element 611, a second temperature sensing element 612 and a third temperature sensing element 613. The first temperature sensing element 611 is disposed in the first slot 1131, the second temperature sensing element 612 is disposed in the second slot 1132, and the third temperature sensing element 613 is disposed in the third slot 1133. The hot nozzle temperature sensing part 62 extends from the heating step 122 to the side of the mounting step 121, and finally protrudes from the opening 1251 of the hot nozzle casing 125. The first slot 1131, the second slot 1132 and the third slot 1133 are further provided with a plurality of fixing slots 118, and the first temperature sensing element 611, the second temperature sensing element 612 and the third temperature sensing element 613 are fixed on the flow distribution plate main body 11 by fixing elements. The two second temperature sensing elements 612 are disposed on the main body 11 of the flow dividing plate near two ends of the connecting flow channel 1113, and the third temperature sensing element 613 is disposed on the main body 11 of the flow dividing plate near an end of the inlet flow channel 1111 far from the connecting flow channel 1113. The lengths of the second temperature sensing element 612 and the third temperature sensing element 613 are both smaller than the length of the first temperature sensing element 611, the second temperature sensing element 612 is used for testing the temperature at the two ends of the connecting flow passage 1113, and the third temperature sensing element 613 is used for testing the temperature at the end of the inlet passage. The first temperature sensing element 611, the second temperature sensing element 612 and the third temperature sensing element 613 may adopt thermocouple temperature sensing lines.

Referring to fig. 10, in order to describe the runner structure of the mold more intuitively, the runner model of the runner structure forming mold of the zinc alloy according to an embodiment of the present invention is in a shape corresponding to the runner structure. The flow channel structure 13 includes a main flow channel 131, a transition flow channel 133 and a plurality of branch flow channels 132, the transition flow channel 133 being used to connect the end of the main flow channel 131 and the start of each branch flow channel 132. This structure facilitates the molten metal of the main runner 131 to uniformly flow into the respective sub-runners 132.

In an alternative embodiment, the main flow channel 131 is a cylindrical flow channel, and the diameter of the main flow channel 131 gradually increases in the direction toward the transition flow channel 133, which facilitates the post-forming nozzle demolding. The cross-sectional area of the main flow passage 131 is larger than the sum of the cross-sectional areas of the respective sub-flow passages 132, and this structure ensures that the molten metal is sufficiently flowed into the respective sub-flow passages 132.

As shown in fig. 10 and 11, the transition duct 133 has a circular configuration. One end surface of the circular transition duct 133 is connected to the main duct 131, and the other end surface is connected to the plurality of branch ducts 132. Before entering each sub-runner 132, the molten metal passes through the circular transition runner 133, then flows into each sub-runner 132, and the molten metal flowing into each sub-runner 132 is substantially uniform, so that the occurrence of the situation that the molten metal enters each sub-runner 132 unevenly and the like is reduced, and the consistency of each molded product is improved.

Referring to fig. 10 and 13, the branch channel 132 includes a front section channel 1321 and a rear section channel 1322, the front section channel 1321 connects the main channel 131 and the rear section channel 1322, the rear section channel 1322 is connected with the glue inlet of the cavity structure 40, the front section channel 1321 is set as a curved channel, the curved channel ensures the smoothness of the molten metal flowing in the channel, and avoids the bad phenomena of air inclusion and the like caused by the blocked molten metal flowing, so that the molten metal can be better filled into the cavity structure 40.

In an alternative embodiment, the cross-sectional area of the forward segment flow passage 1321 decreases in a direction toward the aft segment flow passage 1322, and the velocity of the molten metal is lost as the molten metal flows within the flow passage. The cross-sectional area setting of runner is the state that reduces gradually, has guaranteed that the in-process molten metal of filling is the acceleration state, is favorable to the molten metal fully to enter into each die cavity structure 40 and carries out the shaping, has promoted the shaping product quality.

Referring to fig. 10, 12 and 13, the back-end flow passage 1322 is angled with respect to the cavity structure 40 such that the distance between the back-end flow passage 1322 and the cavity structure 40 increases in a direction toward the front-end flow passage 1321. The included angle between the rear segment flow passages 1322 and the cavity structure 40 may be 20-70 °. The structure is used for preventing the metal liquid in the flow channel from flowing back and influencing the quality of the product. The glue inlet of the cavity structure 40 is a long opening, the back-section runner 1322 extends from one side of the glue inlet to the other side of the glue inlet, and the distance between the back-section runner 1322 and the cavity structure 40 is gradually increased in the direction towards the front-section runner 1321, which is favorable for the smoothness of the molten metal flowing in the runner. If the distances between the rear runner 1322 and the cavity structure 40 are equal, that is, the rear runner 1322 and the cavity structure 40 are arranged in parallel, one end of the cavity structure 40, which is far away from the main runner 131, receives molten metal after the other end, which affects the molding quality of the product.

In an alternative embodiment, the rear segment flow passage 1322 includes a drainage chamber 13221 and a guide chamber 13222, the drainage chamber 13221 is connected with the front segment flow passage 1321, the guide chamber 13222 connects the drainage chamber 13221 with a glue inlet of the die cavity structure 40, and the guide chamber 13222 guides the molten metal in the drainage chamber 13221 into the die cavity structure 40 for forming.

The glue inlet of the cavity structure 40 is approximately arranged at the middle position of the cavity structure 40. The thickness of the guide chamber 13222 is set to be smaller than that of the drainage chamber 13221, and the structure is set to accelerate the molten metal in the rear-stage runner 1322 so that the molten metal fills the cavity structure 40.

Referring to fig. 13, in an alternative embodiment, the connection between the two ends of the guiding cavity 13222 and the two sides of the glue inlet is substantially perpendicular to the glue inlet. The structure enables molten metal in the back-section runner 1322 to vertically enter the glue inlet, so that the cavity structure 40 is conveniently filled with the molten metal, and the quality of a molded product is improved.

Specifically, the front end junction 13223 of the guide cavity 13222 is connected to the front end of the glue inlet of the cavity structure 40, and the front end of the guide cavity 13222 is perpendicular to the glue inlet; the rear end connection 13224 of the guide cavity 13222 is connected with the rear end of the glue inlet of the cavity structure 40, and the rear end of the guide cavity 13222 is perpendicular to the rear end of the glue inlet of the cavity structure 40, that is, the molten metal in the guide cavity 13222 vertically enters the cavity structure 40. It is understood that the connection between the two ends of the guide cavity 13222 and the glue inlet may not be perpendicular to the glue inlet, for example, the angle between the connection between the two ends of the guide cavity 13222 and the glue inlet is in the range of 70-110 °.

In an alternative embodiment, the thickness of the guide cavity 13222 decreases from the end near the forward flow passage 1321 to the end away from the forward flow passage 1321. The arrangement of this structure is in the accelerating condition when making molten metal get into cavity structure 40, ensures that the molten metal fills cavity structure 40, reduces the product defective rate, promotes the quality of shaping product.

Specifically, the guide cavity 13222 is used for connecting the drainage cavity 13221 and the glue inlet, the thickness of the guide cavity 13222 is the largest at a position close to the drainage cavity 13221, the thickness of the guide cavity 13222 is the smallest at a position close to the glue inlet, and the thickness of the glue inlet can be 0.25mm, so that the speed of molten metal at the glue inlet is in the range of 50-60m/s, the erosion phenomenon of an insert is avoided, and the service life of the mold is shortened.

Referring to fig. 10 and 13, in an alternative embodiment, the back segment flow passage 1322 further includes a thickened portion 1323, the thickened portion 1323 is disposed at an end of the back segment flow passage 1322 away from the front segment flow passage 1321, wherein the thickness of the thickened portion 1323 is greater than that of the guiding chamber 13222. In the process that the molten metal flows into the rear section flow passage 1322 from the end of the rear section flow passage 1322 close to the front section flow passage 1321 and then flows away from the front section flow passage 1321, a certain loss occurs in speed, and the molten metal may not flow into the end of the rear section flow passage 1322 away from the front section flow passage 1321, which may affect the molding quality of a product. The runner model is formed by grooves formed in an upper die core and a lower die core of the die, the thickness of the thickened portion 1323 is large, namely the depth of the groove corresponding to the thickened portion 1323 is deep, the bottom surface of the groove corresponding to the thickened portion 1323 is lower than that of the groove corresponding to the guide cavity 13222, and liquid can preferentially flow to the lower part. Therefore, the structure enables the molten metal to flow to the thickened portion 1323 first, the probability that the molten metal cannot flow into the side, far away from the front section flow passage 1321, of the cavity structure 40 is reduced, and the quality of products is improved.

As shown in fig. 11 and 14, in an alternative embodiment, the glue inlet of the cavity structure 40 is opened on the arc surface 41 of the cavity structure 40. The connection part of the guide cavity 13222 and the glue inlet is provided with an inclined plane 13225, and the inclined plane 13225 is vertical to the circular arc surface 41. From the mechanics perspective, the structure is convenient for a product to be directly broken off from the water gap after being formed, and the occurrence of adverse conditions such as excessive materials or material shortage of the glue inlet is avoided.

Referring to fig. 15, in order to describe the exhaust structure of the mold more intuitively, the exhaust material slag is used to describe the exhaust structure of the mold. Exhaust structure is used for eliminating the gas pocket of shaping product, and exhaust structure includes front mould benevolence body and back mould benevolence body, is equipped with front mould exhaust chamber on the front mould benevolence body, is equipped with back mould exhaust chamber on the back mould benevolence body, and front mould benevolence body and this body coupling of back mould benevolence, front mould exhaust chamber and the combination of back mould exhaust chamber have formed exhaust chamber 31.

The exhaust cavity 31 is communicated with the cavity structure 40, and the bottom wall surface of the exhaust cavity 31 is wave-shaped. In order to save space of the conventional mold, most of the exhaust structures comprise a slag ladle and an exhaust cavity with a plane surface, and the slag ladle has a large volume, so that the waste of raw materials is caused. The scheme of this application does not design the sediment package, directly adopts the surface to exhaust for the exhaust chamber 31 of wave type, and the exhaust chamber 31 of wave type has increased the exhaust stroke in exhaust chamber 31, has reduced the waste of raw and other materials under the prerequisite of the quality of guaranteeing the shaping product.

In an alternative embodiment, the overall shape of the exhaust cavity 31 is a linear structure, and the wave-shaped surface of the exhaust cavity 31 discharges the gas in the cavity structure 40 in a wave form, so that the exhaust stroke is increased; and compared with a plane exhaust cavity, the occupied space of the exhaust cavity is reduced.

Referring to fig. 16, in an alternative embodiment, the connection part of the exhaust cavity 31 and the cavity structure 40 is an exhaust port, and in order to facilitate breaking off the exhaust slag generated in the production process, the exhaust port is arranged on the arc surface of the cavity structure 40, and the part of the exhaust cavity 31 connected with the cavity structure is perpendicular to the arc surface of the cavity structure 40.

The size of the part of the exhaust cavity 31 connected with the cavity structure 40 is larger than that of the part far away from the cavity structure 40, for example, the thickness of the part of the exhaust cavity 31 close to the cavity structure is 0.5mm, and the thickness of the other part of the exhaust cavity is 0.3-0.4 mm. Therefore, the strength of the part of the exhaust cavity 31 connected with the cavity structure 40 is higher than that of other parts, so that the phenomenon that the exhaust slag is not completely broken off due to the fact that the exhaust slag is broken off from other parts when a user breaks off the exhaust slag is avoided.

Referring to fig. 16 again, in an alternative embodiment, an exhaust groove 316 is disposed on the front mold core body or the rear mold core body, the exhaust groove 316 is connected to an end of the exhaust cavity 31 away from the cavity structure 40, and the exhaust groove 316 communicates the exhaust cavity 31 with the front mold core body, or the exhaust groove 316 communicates the exhaust cavity 31 with an exterior of the rear mold core body, so as to exhaust the gas in the exhaust cavity 31. The depth of the exhaust groove is 0.3 mm.

In an alternative embodiment, as shown in fig. 17 and 18, the vent chamber 31 includes a first stage vent chamber 311 and a second stage vent chamber 312, the first stage vent chamber 311 is connected to the cavity structure 40, and the second stage vent chamber 312 is connected to the first stage vent chamber 311 at an included angle. This structure has further reduced the space that the exhaust chamber 31 occupy the mould to increased the carminative stroke in exhaust chamber 31, promoted the quality of shaping product.

Specifically, the angle between second-stage exhaust chambers 312 and first-stage exhaust chambers 311 is set to 90 °, increasing the stroke in which exhaust chambers 31 are exhausted. The included angle between the second-stage air discharge chambers 312 and the first-stage air discharge chambers 311 may be set to other angles, which is not limited to this, and the included angle of 90 ° is just one example.

Referring to fig. 18, in an alternative embodiment, the exhaust chamber 31 further includes a third exhaust chamber 313, the third exhaust chamber 313 is connected to the second exhaust chamber 312 at an included angle, and the addition of the third exhaust chamber 313 further increases the exhaust stroke of the exhaust chamber 31. Because the restriction of mould size, only set up under the condition of first order exhaust chamber 311 and second level exhaust chamber 312, exhaust effect is not too good, probably causes the bad of shaping product, adds a third level exhaust chamber 313, and the maximize is saved the exhaust chamber and is taken up the space of mould to the carminative stroke in exhaust chamber 31 has been increased, the quality of shaping product is promoted.

Specifically, one end of the second-stage exhaust cavity 312 is connected to the first-stage exhaust cavity 311, the other end of the second-stage exhaust cavity 312 is connected to the third-stage exhaust cavity 313, and the first-stage exhaust cavity 311 and the third-stage exhaust cavity 313 are respectively disposed on two sides of the second-stage exhaust cavity 312. The included angle between third-level exhaust cavity 313 and second-level exhaust cavity 312 is set to 90 degrees, and three exhaust cavities connected in sequence at included angles are adopted, so that the exhaust stroke is increased, and the space occupied by the exhaust cavities in the mold is saved. The included angle between the third stage exhaust cavity 313 and the second stage exhaust cavity 312 may be set to other angles, and is not limited herein.

It will be appreciated that more stages of venting cavities may be provided, as die size permits. For example fourth level exhaust chamber and fifth level exhaust chamber, fourth level exhaust chamber is the contained angle setting with third level exhaust chamber 313, and fifth level exhaust chamber is the contained angle setting with fourth level exhaust chamber, and the exhaust stroke in exhaust chamber has been increased to the maximize promotes exhaust effect, promotes shaping product quality.

Referring to FIG. 19, in an alternative embodiment, the vent chamber 31 further includes a transition chamber 314, one end of the transition chamber 314 being connected to the cavity structure 40 and the other end of the transition chamber 314 being connected to the first stage vent chamber 311. The junction of the transition chamber 314 and the cavity structure 40 is the vent of the mold. The cross-sectional area of the exhaust port is smaller than the cross-sectional area of the connection between the first-stage exhaust cavity 311 and the transition cavity 314, and the structure is designed to facilitate the gas in the cavity structure 40 to be exhausted from the exhaust port. In gas flows into great environment from less environment easily, the exhaust in convenient exhaust chamber has promoted exhaust effect to promote the quality of shaping product.

In an alternative embodiment, the first stage exhaust cavity 311 is configured as a flared exhaust cavity, and the width of the first stage exhaust cavity 311 increases from the end connected to the transition cavity 314 to the end connected to the second stage exhaust cavity 312. According to the characteristics of gas flow, the structure is convenient for the exhaust cavity to exhaust.

Specifically, the width of the first stage exhaust cavity 311 is less than the width of the second stage exhaust cavity 312, and the width of the second stage exhaust cavity 312 is less than the width of the third stage exhaust cavity 313. The structure utilizes the characteristic of gas flow, and is convenient for exhausting; and adopt the mode that multistage turning round, multistage buffering, the biggest convenience exhausts, has avoided the emergence of bad phenomena such as material that spout in the production.

Referring to fig. 20 and 21, in an alternative embodiment, the second stage exhaust cavity 312 is also configured as a flared exhaust cavity, and the width of the second stage exhaust cavity 312 gradually increases toward the second stage exhaust cavity to facilitate exhaust of the second stage exhaust cavity. The minimum value of the width of the second stage exhaust cavity 312 is greater than or equal to the maximum value of the width of the first stage exhaust cavity 311.

In an alternative embodiment, the third stage exhaust cavity 313 is configured as a trumpet type exhaust cavity, the width of the third stage exhaust cavity 313 gradually decreases in a direction towards the second stage exhaust cavity 312, and the minimum width of the third stage exhaust cavity is greater than or equal to the maximum width of the second stage exhaust cavity. The air flow is transmitted from the second-stage exhaust cavity 312 to the third-stage exhaust cavity 313, and the width of the third-stage exhaust cavity 313 is gradually increased in the direction away from the second-stage exhaust cavity 312, so that the exhaust is convenient.

It can be understood that the fourth stage exhaust cavity and the fifth stage exhaust cavity can also be arranged as horn type exhaust cavities, and the fourth stage exhaust cavity and the fifth stage exhaust cavity are gradually enlarged along the flowing direction of the airflow, so that the exhaust is convenient.

Referring to FIG. 19, in an alternative embodiment, the vent chamber 31 further includes an auxiliary vent chamber 315, and the transition chamber 314 is connected to a larger planar side of the cavity structure 40 via the auxiliary vent chamber 315. The exhaust effect of the exhaust cavity 31 is optimized, and the surface defects of the molded product are reduced.

Specifically, auxiliary vent chamber 315 is connected at one end to transition chamber 314 and at the other end to one side of cavity structure 40. The scheme of this application has reduced the carminative volume of exhaust chamber, has increased the exhaust stroke in exhaust chamber, but probably form unfavorable such as water wave on the great side of shaping product, in order to get rid of these water wave badness, has increased an auxiliary exhaust chamber 315, guarantees the quality of shaping product.

Referring to fig. 22 and 23, in an alternative embodiment, the front mold venting cavity of the front mold core body is a half of the wave cavity, and the rear mold venting cavity of the rear mold core body is the other half of the wave cavity. The thickness D of the wavy exhaust is set to be 0.3-0.4mm, the weight of the exhaust is about 40% -50% of the weight of the product, the total length of the exhaust can be set to be more than 60mm, the exhaust effect of the die is improved, and the quality of the product is improved.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a runner structure, runner structure sets up in zinc alloy forming die, runner structure is arranged in carrying molten metal to advancing jiao kou of each die cavity structure in the zinc alloy forming die, its characterized in that, runner structure includes:

a main flow channel;

the runner, will the sprue with advance gluey mouth intercommunication, the runner includes anterior segment runner and back end runner, anterior segment runner intercommunication the sprue with the back end runner, the anterior segment runner is the curve runner, the back end runner with advance gluey mouth and be connected, the size of back end runner is in the orientation the size of anterior segment runner is crescent in the direction.

2. The flow channel structure according to claim 1, wherein the rear stage flow channel comprises:

the drainage cavity is connected with the front section runner;

the guide cavity is connected with the drainage cavity and the glue inlet, and the thickness of the drainage cavity is larger than that of the guide cavity.

3. The flow channel structure according to claim 2, wherein the connection between the two ends of the guide cavity and the glue inlet is perpendicular to the glue inlet.

4. The flow channel structure of claim 2, wherein the thickness of the guide chamber decreases in a direction away from the drainage chamber.

5. The flow channel structure according to claim 2, wherein the rear-stage flow channel further comprises:

the thickened part is arranged at the tail end of the rear section runner;

the depth of the thickened portion is greater than the depth of the guide cavity.

6. The flow channel structure according to claim 2, wherein the glue inlet is provided on a circular arc surface of the cavity structure.

7. The flow channel structure according to claim 6, wherein a connection part of the guide cavity and the glue inlet is provided with an inclined plane perpendicular to the arc surface.

8. The flow channel structure according to claim 1, further comprising:

and the transition section is connected with the main runner and the sub-runners.

9. A flow channel structure according to claim 1, characterised in that the main flow channel is a cylindrical flow channel, the diameter of which gradually increases in a direction towards the sub flow channels.

10. A zinc alloy forming die comprising the flow channel structure according to any one of claims 1 to 9.