CN110341124A

CN110341124A - 32AH battery jar hot flow path one goes out four mould structures and its forming method

Info

Publication number: CN110341124A
Application number: CN201910592233.8A
Authority: CN
Inventors: 缪琦亮
Original assignee: Younifu (changxing) Automation Equipment Co Ltd
Current assignee: Younifu (changxing) Automation Equipment Co Ltd
Priority date: 2019-07-03
Filing date: 2019-07-03
Publication date: 2019-10-18

Abstract

The present invention provides 32AH battery jar hot flow paths one to go out four mould structures and its forming method, its mould structure is arranged symmetrically by carrying out to sprue, branch flow passage and the runner in flow distribution plate, cooperate material injection nozzle in the center symmetric setting of battery jar, the flow, flow velocity and material feeding pressure for so that feed nozzle is branched to the raw material of each material injection nozzle are consistent, average, guarantee to be balanced into sub- two sides by raw material injection pressure as far as possible, and then is avoided as far as possible into son because the tilt quantity of unbalance stress run-off the straight is excessive；Its forming method passes through in mold-closing injection step, utilize the setting of sprue, branch flow passage and runner, cooperate the material injection nozzle of the central point setting in a center of symmetry along type chamber, type after material injection nozzle feeds injection into molding is intracavitary, the pressure for the raw material for injecting material injection nozzle keeps balancing as far as possible in the two sides for entering son, makes to deviate into son not run-off the straight as far as possible.

Description

32AH battery jar hot flow path one goes out four mould structures and its forming method

Technical field

The present invention relates to battery jar injection molding processing technique field, specially 32AH battery jar hot flow path one goes out four Mould structure and its forming method.

Background technique

The plastic mould of existing battery jar injection molding is Cold runner injection mold, and Cold runner injection mold will Plastic cement under molten condition enters mold cavity by sprue bush, runner and cast gate, and any heating element is not provided in runner, For cold runner plastic mould during forming battery jar, there are following technical problems:

1, waste material regrinding-material can be formed in sprue bush, runner, gate portions after the die sinking of cold burden road mold；

2: molding cycle is long, the pressure loss is big, and production efficiency is low；

3, the low unsightly wall unevenness of molding product surface finish is even；

4, mechanical property is lower.

Application No. is 201810521774.7 Chinese patents to disclose a kind of battery battery case and battery for Chinese invention The inside of lid hot flow path plastic mould, including die main body, die main body is equipped with heating system, and heating system is mounted on mold master In body, Active Interface is equipped in die main body, Active Interface is fixedly connected by screw with die main body.This kind of battery battery What slot and battery cover hot flow path plastic mould used is hot flow path plastic mould, is equipped with temperature control box, and temperature control box has temperature High warning function and automatic regulation function are spent, the temperature in Integral hot runner system is effectively adjusted by temperature control box, from And the control of solution temperature change is made to cool down the remaining raw material of mould inside will not within the scope of permissible accuracy, avoid It again passes by disintegrating apparatus to be crushed, production scene is made not generate dust, there is no employment injuries to employee, without environment dirt Dye, to reach environmental-protection function.

Although above-mentioned patent is realized to battery jar hot flow path injection molding, there are following technologies to ask for it Topic:

1, not in view of in injection molding process, pressure of the arranged distribution of material injection nozzle in fill process is to electric power storage The influence of pond casing forming quality reduces the mechanical property of battery jar after molding；

2, during battery jar molding shot, raw material injection pressure is big, after long-term work, type chamber is easily caused to rupture；

3, after battery jar molding, in knockout course, mandril directly ejects battery jar, causes to occur on battery jar recessed Block influences surface smoothness.

Summary of the invention

In view of the above problems, the present invention provides a kind of 32AH battery jar hot flow paths one to go out four mould structures, pass through Arranged symmetrically, central symmetry of the cooperation material injection nozzle in battery jar is carried out to sprue, branch flow passage and the runner in flow distribution plate Setting, the flow, flow velocity and material feeding pressure for so that feed nozzle is branched to the raw material of each material injection nozzle are consistent, average, guarantee as far as possible Enter sub- two sides to be balanced by raw material injection pressure, and then avoided as far as possible into son because the tilt quantity of unbalance stress run-off the straight is excessive, The material injection nozzle raw material injection flow and pressure for solving existing hot flow path plastic mould ask the technology that product quality has an impact Topic.

To achieve the above object, the invention provides the following technical scheme:

32AH battery jar hot flow path one goes out four mould structures, comprising:

Upper mold assembly, the upper mold assembly along the vertical direction from top to bottom successively include be overlapped mutually connection thermal insulation board, Upper mould fixed plate, hot runner manifold, upper mold cover board and cope plate are provided with several four equidistant arrangements on the cope plate and are used for The chamber of injection molding battery jar, and be arranged around the chamber and cooling is carried out to the battery jar molding in chamber Coolant flow channel is provided with the hot flow path group that thermoplastic is injected with the chamber and into the chamber in the upper mold assembly, should Hot flow path group includes the feed nozzle for charging, the flow distribution plate connecting with the feed nozzle, and along the flow distribution plate central point in The symmetrically arranged four groups of equidistant arrangements of the heart and with the one-to-one material injection nozzle group of the chamber, the feed nozzle is relative to the note Material mouth group is set on the central point of another side end face of the flow distribution plate, and the flow distribution plate is arranged at ladder, is inside respectively set There are superposed sprue, branch flow passage and runner positioned at lower part, the midpoint of the sprue is connected to the feed nozzle, Its both ends is connected to the midpoint of the corresponding branch flow passage, and the both ends of the branch flow passage connect the midpoint of the corresponding runner, should Material injection nozzle of the both ends connection of runner in same group of the material injection nozzle group；And

Lower mould assembly, the lower mould assembly successively include the push plate being overlapped mutually, lower template from top to bottom along the vertical direction And lower mold fixed plate, the push plate push setting along the vertical direction, be vertically arranged in the lower template it is several enter subelement, This enter subelement penetrate the push plate and the chamber correspond it is interspersed cooperatively form with battery jar at profiling be arranged at Type chamber, the lower mold fixed plate connect setting with the lower template, are provided in the lower mould assembly and push pushing away for the push plate Sending component.

As an improvement, the upper mold cover board seal closure is set on the chamber, and it is provided on the upper mold cover board for pacifying Fill the feed nozzle mounting hole of the feed nozzle.

As an improvement, the side wall camber outwardly convex where the chamber width direction is arranged.

As an improvement, the hot flow path group further includes electrical heating elements, the electrical heating elements are embedded in the flow distribution plate It is interior, around the sprue, branch flow passage and runner setting.

As an improvement, the diameter of the sprue is D1, the diameter of the branch flow passage is D2, and the diameter of the runner is D3, D1, D2 and D3 meet relationship: D1 > D2 > D3.

As an improvement, every group of the material injection nozzle group includes the note in a center of symmetry along the central point of the battery jar Expect mouth, which is diagonally set to above the corresponding chamber, and the material injection nozzle respectively corresponds and is set to molding institute On the middle line for stating the width direction of second group arranged on battery jar length direction and the 5th group single lattice.

As an improvement, recess is provided with tiger's jaw at the position of the push plate and the cope plate corresponding matching, which is Slope setting, with the cope plate bottom around the corresponding cladding setting of the convex mouth of the chamber, and the convex mouth is around the chamber Room setting.

As an improvement, the push component includes:

The lower end of first guide rod, first guide rod is connected in the lower template, and end penetrates described thereon Push plate, the push plate is slided along first guide rod to be arranged；

The upper end of second guide rod, second guide rod connect setting with the push plate, and lower end is slideably positioned in institute It states in lower template；And

Push rod, the push rod upper end connect setting with the push plate, and lower end is slideably positioned in the lower template, And its lower end is provided with and engages with the lower template, the cylindrical limiting section limited to the push plate.

As an improvement, it is described enter subelement include length direction equidistant arrangement along the chamber it is several enter son, this enters The sub single lattice in the battery jar is arranged in a one-to-one correspondence, and son is corresponding to be somebody's turn to do positioned at entering described in the chamber length direction two sides The equal camber outwardly convex setting in the position of side wall where chamber width direction.

The beneficial effect of plastic rubber mold structure of the present invention is:

(1) present invention is arranged symmetrically by carrying out to sprue, branch flow passage and the runner in flow distribution plate, cooperates material injection nozzle In the center symmetric setting of battery jar, feed nozzle is made to branch to the flow, flow velocity and material feeding pressure of the raw material of each material injection nozzle It is consistent, average, guarantee to be balanced into sub- two sides by raw material injection pressure as far as possible, and then avoided as far as possible into son because unbalance stress is sent out Raw inclined tilt quantity is excessive, guarantees that the size of molding battery jar is all satisfied design size, it is anti-crushing, anti-to improve battery jar The mechanical property split；

(2) present invention is by entering sub- carry out arc with positioned at type cavity length two sides to the side wall where type chamber width direction Protrusion processing, makes the side wall of the length direction of molding battery jar after cooling meat, offsets cooling receive by raised surplus Contracting amount makes the side wall where battery jar width direction not to contract, improves the forming quality of battery jar, improve product Dimensional accuracy；

(3) present invention is by pushing push plate using the mandril of injection molding machine, passing through push plate using push plate is arranged in lower template With the engaging on battery jar opening edge edge, battery jar is pushed to be detached from son from entering, realizes the demoulding processing of battery jar, avoid Mandril directly ejects the shell of electric power storage, influences surface smoothness；

(4) present invention coats the convex mouth on cope plate by the way that tiger's jaw is arranged in lower template, that is, realizes upper mold Quick positioning molding between assembly and lower mould assembly, while the type chamber being set on cope plate is reinforced, it avoids being molded The high pressure of machine makes type chamber spalling, the intensity of raising type chamber.

In view of the above problems, the present invention provides battery jar forming method, by utilizing in mold-closing injection step The setting of sprue, branch flow passage and runner cooperates the material injection nozzle of the central point setting in a center of symmetry along type chamber, in material injection nozzle Type after feeding injection into molding is intracavitary, and the pressure for the raw material for injecting material injection nozzle keeps balancing as far as possible in the two sides for entering son, Make to deviate into son not run-off the straight as far as possible, solve in battery jar forming process, raw material injection pressure produces product quality Raw the technical issues of influencing.

32AH battery jar forming method, includes the following steps

Step 1: mold flow analysis, using MOLDFLOW mold flow analysis software to the shape and injection of the battery jar of 32AH Condition of molding carries out sunykatuib analysis, designs above-mentioned 32AH battery jar hot flow path one and goes out four mould structures；

Step 2: material prepares, plastic grain heating, drying evaporation water, drying temperature is 80-90 DEG C, and drying time is 2 hours；

Step 3: fusion plastification, plastic grain is added to inside injecting machine material tube, by heating and injection molding machine by hopper Feed particulate material is become molten condition by screw rod rotation, and melt plastic cement temperature is 220 DEG C；

Step 4: mold-closing injection, upper mold assembly and lower mould assembly pass through the guide-localization of guide rod and guide sleeve, make convex mouth and tiger Mouth is plugged together and is molded, after molding, injection molding machine by the raw material after hot melt by feed nozzle along sprue it is average be diverted to mainstream It in the branch flow passage of road two sides, then is averagely diverted in the runner of two sides by branch flow passage, is most injected into afterwards through runner is average Along the material injection nozzle of the central point setting in a center of symmetry of chamber, it is injected into the chamber after molding by material injection nozzle, and carry out Pressure maintaining processing, wherein injection pressure 120-130Mpa, stage injection time are 9-12s, dwell pressure 95-105Mpa, are protected The pressure time is 5-7s；

Step 5: it is cooling, after raw material injection pressure maintaining terminates, stops into glue, coolant liquid is passed through to chamber by coolant flow channel Indoor raw material carries out cooling treatment, cooling time 35-45s；

Step 6: die sinking pickup, after to be cooled, upper mold assembly and lower mould assembly are opened, and injection molding machine mandril is applied to On the push rod being connected with push plate, push plate is released along the first guide rod and the second guide rod, will be buckled to by push plate in entering on son 32AH battery jar pushes disengaging output outward；

Step 7: product testing, after molding 32AH battery jar placement 12h is fully cooled, to battery ruler It is very little to measure, while length-width direction is detected because of the deflection generated that shrinks, guarantee that size meets the margin of tolerance of production requirement.

The beneficial effect of forming method of the present invention is:

(1) present invention is by using the setting of sprue, branch flow passage and runner, cooperating edge in mold-closing injection step The material injection nozzle of the central point of type chamber setting in a center of symmetry, the type after material injection nozzle feeds injection into molding is intracavitary, makes material feeding Mouth injection raw material pressure enter son two sides keep balancing as far as possible, make into son as far as possible not run-off the straight deviate, guarantee at The size of the battery jar of type is all satisfied design size, improves that battery jar is anti-crushing, mechanical property of cracking resistance；

(2) before battery jar carries out injection molding processing mold flow analysis step can be arranged, to battery jar in the present invention Processing and forming carry out mold flow analysis, using MOLDFLOW mold flow analysis software to the shape of battery jar and injection moulding condition Sunykatuib analysis is carried out, the optimal setting position of material injection nozzle is calculated, designs and be best suitable for the model battery jar processing and forming Plastic rubber mold structure improves the quality and dimensional accuracy of molding battery jar.

In conclusion the present invention is with plastic rubber mold structure stability, strong, battery forming method more optimizes, and realizes The mechanical property and dimensional accuracy of molding battery jar are high, and any surface finish.

Detailed description of the invention

Fig. 1 is positive structure diagram of the present invention；

Fig. 2 is overlooking structure diagram of the present invention；

Fig. 3 is hot flow path group stereoscopic schematic diagram of the present invention；

Fig. 4 is hot flow path group of the present invention longitudinal direction schematic cross-sectional view；

Fig. 5 is hot flow path group transverse direction schematic cross-sectional view of the present invention；

Fig. 6 is lower template schematic perspective view of the present invention；

Fig. 7 is lower template positive structure diagram one of the present invention；

Fig. 8 is lower template side structure schematic view two of the present invention；

Fig. 9 is lower template side structure schematic view of the present invention；

Figure 10 is chamber schematic cross-sectional view one of the present invention；

Figure 11 is chamber schematic cross-sectional view two of the present invention；

Figure 12 is hot flow path group positive structure diagram of the present invention；

Figure 13 is the forming method flow diagram of embodiment of this case two.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time The orientation or positional relationship of the instructions such as needle ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of The description present invention and simplified description, rather than the equipment of indication or suggestion meaning or element must have a particular orientation, with spy Fixed orientation construction and operation, therefore be not considered as limiting the invention.

In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more, Unless otherwise specifically defined.

Embodiment one:

As shown in Fig. 1 to Fig. 6, Fig. 8 and Figure 10, a kind of 32AH battery jar hot flow path one goes out four mould structures, comprising:

Upper mold assembly 10, the upper mold assembly 10 successively include being overlapped mutually the heat-insulated of connection from top to bottom along the vertical direction Plate 1, upper mould fixed plate 2, hot runner manifold 3, upper mold cover board 4 and cope plate 5, be provided on the cope plate 5 several four it is equidistant Arrangement and the chamber 51 for being used for injection molding battery jar 50, and around the chamber 51 setting and to molding described in chamber 51 Battery jar 50 carries out cooling coolant flow channel, is provided with and is connected to the chamber 51 and to the chamber 51 in the upper mold assembly 10 The hot flow path group 6 of interior injection thermoplastic, which includes the feed nozzle 61 for charging, is connect with the feed nozzle 61 Flow distribution plate 62, and along the flow distribution plate 62 central point setting in a center of symmetry four groups of equidistant arrangements and with the chamber 51 one by one Corresponding material injection nozzle group 63, the feed nozzle 61 are set to another side end face of the flow distribution plate 62 relative to the material injection nozzle group 63 Central point on, the flow distribution plate 62 is arranged at ladder, be inside respectively arranged with superposed sprue 621, be located at lower part Branch flow passage 622 and runner 623, the midpoint of the sprue 621 is connected to the feed nozzle 61, and both ends connection is corresponding The midpoint of the branch flow passage 622, the both ends of the branch flow passage 622 connect the midpoint of the corresponding runner 623, the runner Material injection nozzle 631 of the 623 both ends connection in same group of the material injection nozzle group 63；And

Lower mould assembly 20, the lower mould assembly 20 along the vertical direction from top to bottom successively include be overlapped mutually push plate 7, under Template 8 and lower mold fixed plate 9, the push plate 7 push setting along the vertical direction, are vertically arranged in the lower template 8 several Enter subelement 81, this, which enters subelement 81 and penetrates the push plate 7 and the chamber 51, corresponds interspersed cooperatively form and battery The forming cavity that shell 50 is arranged at profiling, the lower mold fixed plate 9 connect setting with the lower template 8, in the lower mould assembly 20 It is provided with the push component 71 for pushing the push plate 7.

As shown in Figures 3 to 5, wherein the hot flow path group 6 further includes electrical heating elements 64, the electrical heating elements 64 It is embedded in the flow distribution plate 62, is arranged around the sprue 621, branch flow passage 622 and runner 623.

It should be noted that more traditional hot flow path plastic mould, the present invention is by sprue 621 and is located in flow distribution plate 62 Feed nozzle 61 at heart position is connected to, and is set to sprue 621 on flow distribution plate 62, branch flow passage 622, runner 623 and material feeding Mouth 631 be it is in a center of symmetry along the center of flow distribution plate 62, guarantee to flow to the flow of raw material of each material injection nozzle 631, pressure equal It is identical, meanwhile, realization material injection nozzle 631 as far as possible is symmetrical arranged on chamber 51, makes material injection nozzle 631 suitable to chamber 51 While smooth charging, it can be ensured that the pressure for entering sub 811 two sides raw materials being arranged in chamber 51 balances as far as possible, enters son as far as possible Will not run-off the straight.

As shown in figure 12, in addition, the hot flow path plastic rubber mold structure in the present embodiment is for injection molding 32AH electric power storage Pond shell, and the mould structure is four cave of a mould, there are four chambers 51 for setting, and therefore, material injection nozzle group 63 is provided with four groups, every group Material injection nozzle 631 is preferably 2, and the central point setting in a center of symmetry along the correspondence chamber 51, material injection nozzle 631 is respectively provided with On 51 any one groups of the correspondence chamber diagonal, and the material injection nozzle 631 is located at the molding storage in chamber 51 On the middle line of the width direction for second group and the 5th group single lattice 501 that battery case 50 arranges along its length, it is arranged as before, a side Face allows for the pressure balance to son 811 is entered, and another aspect allows for, note of the material injection nozzle 631 to each position of chamber 51 The fluency of material is directly arranged on the middle line of 51 width direction of chamber if it is by material injection nozzle 631, will lead to, and chamber 51 is long The material flow of two sides is insufficient where spending direction, diagonal to be arranged, can mutually compensating by two material injection nozzles 631, to chamber 51 each position carries out material feeding.

It further illustrates, terminal box is connected and fixed with flow distribution plate 62 by hexagonal socket head cap screw, the side that terminal box passes through wiring Formula connects temperature control box and hot runner manifold heating equipment outward, hot runner manifold heating equipment heating flow channel plate, is equipped in material injection nozzle 631 Needle, needle are fixed on the needle pendant on the piston rod of needle sleeve inner, and at the same time, needle sleeve is by screw connection It is fixed on upper mould fixed plate 1, needle sleeve surrounding is provided with stomata and is connected with the stomata on upper mould fixed plate 1, further Stomata on upper mould fixed plate is fitted closely with the solenoid valve stomata being fixed on runner 623 by high-temperature resistant seal ring, electricity Magnet valve other side air inlet is connected by tracheae with the tracheae in workshop, and solenoid valve is fixed on flow distribution plate 62 by screw, electricity Magnet valve is connect by way of line on the sequence controller on injection molding machine, for receive injection molding machine transmitting injection with stop Only injection signal, solenoid valve by receive the signal that sequence controller transmits can control each needle open and closure when Between.

Wherein, it is produced in the present embodiment in 32AH battery jar injection molding production process, raw material injection pressure is preferably 125Mpa, raw material stage injection injection time are preferably 10s, and 51 dwell pressure of chamber is preferably 100Mpa, when 51 pressure maintaining of chamber Between preferably 5s, 51 cooling time of chamber be preferably 40s.

As shown in figs. 4 and 5, as a preferred embodiment, the diameter of the sprue 621 is D1, the branch The diameter of runner 622 is D2, and the diameter of the runner 623 is D3, and D1, D2 and D3 meet relationship: D1 > D2 > D3.

It should be noted that by being divided the diameter of sprue 621, branch flow passage 622 and runner 623 step by step, The diameter of the pressure and runner that flow raw material in corresponding runner matches, and the diameter of the big runner of flowing pressure is corresponding The diameter for the runner for also becoming larger, while also avoiding flowing pressure small is opened excessive, and the structure inside flow distribution plate 62 is destroyed.

As shown in figure 4, as a preferred embodiment, the feed nozzle 61 is set backwards to the side of the flow distribution plate 62 It is equipped with positioning sleeve 611, the arrival end of the feed nozzle 61 is provided with tapered portion 612, and the lower end of the tapered portion 612 is connected with back taper portion 613。

It should be noted that passing through.

As a preferred embodiment, 4 seal closure of upper mold cover board is set on the chamber 51, and the upper mould cover The feed nozzle mounting hole 41 for installing the feed nozzle 61 is provided on plate 4.

It should be noted that upper mold cover board 4 directly overlays on cope plate 5, and directly opens up type chamber in cope plate 5, increase The strong intensity of cope plate 5, avoids 5 transition of cope plate from slotting, is suitable for the biggish battery case injection mould of dimensions model An either mould produces the injection molds of multiple battery cases, and this kind of injection molds is mostly that injection pressure is biggish, be easy because Injection pressure spalling chamber 51.

As shown in Figure 10, as a preferred embodiment, the push plate 7 includes:

The middle part of support frame 701, the support frame 701 is provided with inserting slot 702, the covering of the inserting slot 702 chamber 51 Setting；And

Push plate mold insert 703, the edge of push plate mold insert 703 are set in the inserting slot 702, offer enter son described in confession thereon The notch 704 that unit 61 penetrates.

It should be noted that push plate 7 is carried out split settings, push plate 7 is respectively set to support frame 701 and push plate mold insert 703, push plate mold insert 703 is for ejecting battery jar 50, the roughness of every mechanical property and surface processing, light Cleanliness is superior to support frame 701.

As shown in Figures 6 to 9, as a preferred embodiment, the push component 71 includes:

First guide rod 711, the lower end of first guide rod 711 are connected in the lower template 8, and end is worn thereon The saturating push plate 7, the push plate 7 is slided along first guide rod 711 to be arranged；

Second guide rod 712, the upper end of second guide rod 712 connect setting with the push plate 7, and lower end sliding is set It is placed in the lower template 8；And

Push rod 713,713 upper end of push rod connect setting with the push plate 7, lower end be slideably positioned in it is described under In template 8, and its lower end is provided with and engages with the lower template 8, the cylindrical limiting section limited to the push plate 7 714。

It should be noted that the hot flow path plastic rubber mold structure that the present invention is more traditional, is pushed away by the mandril cooperation of injection molding machine Bar 713 drives push plate 7 to push outward, and the battery jar tipped upside down on son 811 is pushed disengaging output outward, avoids injection molding Machine directly passes through mandril and acts on battery jar, and the battery jar ejection pit that will be disengaged from destroys the light on battery jar surface It is clean.

It further illustrates, the step with 714 corresponding matching of limiting section is provided in lower template 8, utilize step and limit The limit that distance is pushed to push plate 7 is realized in the engaging in position portion 714.

As shown in figure 11, as a preferred embodiment, side wall camber where 51 width direction of the chamber Outwardly convex setting.

Further, it is described enter subelement 61 include length direction equidistant arrangement along the chamber 51 it is several enter son 811, this enters son 811 and is arranged in a one-to-one correspondence with the single lattice 501 in the battery jar 50, and is located at 51 length direction two of chamber The equal camber outwardly convexs setting in position of side walls where entering corresponding 51 width directions of chamber of son 811 described in side.

It should be noted that cooling meat can occur after moulding for battery jar, and battery jar width direction institute Side wall due to there is no the booster action of partition 502, be easily recessed inwardly contraction after the cooling period, and the present invention passes through in chamber 51 With it is corresponding enter son 811 on be arranged arc outwardly convex, distortion allowance is set in advance, utilize distortion allowance offset cooling meat Bring deformation quantity makes the side wall where battery jar width direction not in the deformation that is recessed inwardly.

As shown in Figure 10, as a preferred embodiment, the position of the push plate 7 and 5 corresponding matching of cope plate The place's of setting recess is provided with tiger's jaw 70, which is slope setting, with 5 bottom of cope plate around the convex of the chamber 51 The corresponding cladding setting of mouth 52, and the convex mouth 52 is arranged around the chamber 51.

It should be noted that the present invention passes through to improve the cooperation precision between upper mold assembly 10 and lower mould assembly 20 Tiger's jaw 70 is set in push plate 7, carries out interspersed cooperation positioning using the convex mouth 52 on tiger's jaw 70 and cope plate 5, while utilizing tiger The cladding of 70 pairs of convex mouthes 52 of mouth, reinforces chamber 51, when material injection nozzle 631 being made to carry out material feeding to chamber 51, even if injection molding machine Pressure it is excessive, will not swollen bad chamber 51.

Embodiment two:

Reference implementation example one describes two 32AH battery jar forming method of the embodiment of the present invention.

As shown in figure 13,32AH battery jar forming method, comprising the following steps:

Step 1: mold flow analysis, using MOLDFLOW mold flow analysis software to the shape and injection of the battery jar of 32AH Condition of molding carries out sunykatuib analysis, designs 32AH battery jar hot flow path one described in embodiment one and goes out four mould structures；

Step 4: mold-closing injection, upper mold assembly 10 and lower mould assembly 20 pass through the guide-localization of guide rod and guide sleeve, make convex mouth 52 plug together with tiger's jaw 70 and are molded, and after molding, the raw material after hot melt is averaged by feed nozzle 61 along sprue 611 by injection molding machine Be diverted in the branch flow passage 612 of 611 two sides of sprue, then be averagely diverted in the runner 613 of two sides by branch flow passage 612, It is most injected into along the material injection nozzle 61 of the central point setting in a center of symmetry of chamber 51 through runner 613 is average afterwards, passes through note Material mouth 61 is injected into the chamber 51 after molding, and carries out pressure maintaining processing, wherein injection pressure 120-130Mpa, segmentation note Penetrating the time is 9-12s, dwell pressure 95-105Mpa, dwell time 5-7s；

Step 5: it is cooling, after raw material injection pressure maintaining terminates, stops into glue, coolant liquid is passed through to chamber by coolant flow channel Raw material in room 51 carries out cooling treatment, cooling time 35-45s；

Step 6: die sinking pickup, after to be cooled, upper mold assembly 10 and lower mould assembly 20 are opened, and injection molding machine mandril is made It uses on the push rod 713 being connected with push plate 7, push plate 7 is released along the first guide rod 711 and the second guide rod 712, it will by push plate 7 Be buckled in enter son 811 on 32AH battery jar outward push disengaging export；

It should be noted that being injected into using MOLDFLOW mold flow analysis software to battery battery case in step 1 Type carries out sunykatuib analysis, is uniformly distributed with the buckling deformation of product, glue thickness as foundation, carries out to product into glue point quantity and position Optimization analysis goes out four mould structures to design the 32AH battery jar hot flow path one of optimal case.

It further illustrates, in step 4, is infused using the material injection nozzle of the central point setting in a center of symmetry along type chamber The pressure for entering the raw material that the type to after molding is intracavitary, injects material injection nozzle keeps balance in the two sides for entering son, makes not occur into son Inclination and offset guarantees that the size of molding battery jar is all satisfied design size, improves that battery jar is anti-crushing, mechanical property of cracking resistance Energy.

It further explains, in step 6, pushes push plate using the mandril of injection molding machine, pass through push plate and battery The engaging at shell opener edge pushes battery jar to be detached from son from entering, and realizes the demoulding processing of battery jar, it is straight to avoid mandril The shell for connecing ejection electric power storage, influences surface smoothness.

The course of work:

The shape of the battery jar of 32AH and injection moulding condition are simulated using MOLDFLOW mold flow analysis software Analysis, design 32AH battery jar hot flow path one go out four mould structures, prepare raw material, the evaporation of plastic grain heating, drying later Moisture, drying temperature are 80-90 DEG C, and drying time is 2 hours, it is dry after be added to inside injecting machine material tube by hopper, Feed particulate material is become into molten condition by heating and screw in injection molding machine rotation, melt plastic cement temperature is 220 DEG C, upper mold assembly 10 pass through the guide-localization of guide rod and guide sleeve with lower mould assembly 20, plug together convex mouth 52 with tiger's jaw 70 and are molded, after molding, note The molding machine branch flow passage 612 for being diverted to 611 two sides of sprue that the raw material after hot melt is average along sprue 611 by feed nozzle 61 It is interior, then be averagely diverted in the runner 613 of two sides by branch flow passage 612, most it is injected into afterwards through runner 613 is average along chamber In the material injection nozzle 61 of 51 central point setting in a center of symmetry, it is injected into the chamber 51 after molding, is gone forward side by side by material injection nozzle 61 Row pressure maintaining processing, wherein injection pressure 120-130Mpa, the stage injection time be 9-12s, dwell pressure 95-105Mpa, Dwell time is 5-7s, after raw material injection pressure maintaining terminates, stops into glue, is passed through coolant liquid in chamber 51 by coolant flow channel Raw material carry out cooling treatment, cooling time 35-45s, after to be cooled, upper mold assembly 10 and lower mould assembly 20 are opened, note Molding machine mandril is applied on the push rod 713 being connected with push plate 7, and push plate 7 is released along the first guide rod 711 and the second guide rod 712, is led to Cross push plate 7 will be buckled in enter son 811 on 32AH battery jar outward push disengaging export, molding 32AH battery jar is put It sets after 12h is fully cooled, battery size is measured, while detecting length-width direction because of the deflection generated that shrinks, Guarantee that size meets the margin of tolerance of production requirement.

The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.

Claims

1.32AH battery jar hot flow path one goes out four mould structures characterized by comprising

Upper mold assembly (10), the upper mold assembly (10) successively include being overlapped mutually the heat-insulated of connection from top to bottom along the vertical direction Plate (1), upper mould fixed plate (2), hot runner manifold (3), upper mold cover board (4) and cope plate (5) are provided on the cope plate (5) Several four equidistant arrangements and be used for injection molding battery jar (50) chamber (51), and around the chamber (51) setting and it is right The molding battery jar (50) carries out cooling coolant flow channel in chamber (51), be provided in the upper mold assembly (10) with The chamber (51) connection and to the hot flow path group (6) of injection thermoplastic in the chamber (51), the hot flow path group (6) include for into The feed nozzle (61) of material, the flow distribution plate (62) being connect with the feed nozzle (61), and along the flow distribution plate (62) central point at center Symmetrically arranged four groups of equidistant arrangements and with the one-to-one material injection nozzle group (63) of the chamber (51), feed nozzle (61) phase The material injection nozzle group (63) is set on the central point of the flow distribution plate (62) another side end face, the flow distribution plate (62) at Ladder setting, is inside respectively arranged with superposed sprue (621), branch flow passage (622) and runner positioned at lower part (623), the midpoint of the sprue (621) is connected to the feed nozzle (61), and both ends are connected to the corresponding branch flow passage (622) midpoint, the both ends of the branch flow passage (622) connect the midpoint of the corresponding runner (623), the runner (623) Material injection nozzle (631) of the both ends connection in same group of the material injection nozzle group (63)；And

Lower mould assembly (20), the lower mould assembly (20) along the vertical direction from top to bottom successively include be overlapped mutually push plate (7), Lower template (8) and lower mold fixed plate (9), the push plate (7) push setting along the vertical direction, set vertically on the lower template (8) Be equipped with it is several enter subelement (81), this, which enters subelement (81) and penetrates the push plate (7) and correspond with the chamber (51), wears The forming cavity for cooperatively forming and being arranged with battery jar (50) at profiling is inserted, the lower mold fixed plate (9) and the lower template (8) are even Setting is connect, is provided with the push component (71) for pushing the push plate (7) in the lower mould assembly (20).

2. 32AH battery jar hot flow path one according to claim 1 goes out four mould structures, which is characterized in that the upper mold Cover board (4) seal closure is set on the chamber (51), and is provided on the upper mold cover board (4) for installing the feed nozzle (61) Feed nozzle mounting hole (41).

3. 32AH battery jar hot flow path one according to claim 1 goes out four mould structures, which is characterized in that the chamber (51) the side wall camber outwardly convex setting where width direction.

4. 32AH battery jar hot flow path one according to claim 1 goes out four mould structures, which is characterized in that the hot-fluid Road group (6) further includes electrical heating elements (64), and the electrical heating elements (64) are embedded in the flow distribution plate (62), surrounds institute State sprue (621), branch flow passage (622) and runner (623) setting.

5. 32AH battery jar hot flow path one according to claim 1 goes out four mould structures, which is characterized in that the mainstream The diameter in road (621) is D1, and the diameter of the branch flow passage (622) is D2, and the diameter of the runner (623) is D3, D1, D2 and D3 meets relationship: D1 > D2 > D3.

6. 32AH battery jar hot flow path one according to claim 1 goes out four mould structures, which is characterized in that every group of institute Stating material injection nozzle group (63) includes the material injection nozzle (631) in a center of symmetry along the central point of the battery jar (50), the material feeding Mouth (631) is diagonally set to above the corresponding chamber (51), and the material injection nozzle (631) respectively correspond be set to it is molding On the middle line of the width direction of second group and the 5th group single lattice (501) arranged on battery jar (50) length direction.

7. 32AH battery jar hot flow path one according to claim 1 goes out four mould structures, which is characterized in that the push plate (7) recess at the position of the cope plate (5) corresponding matching is provided with tiger's jaw (70), which is slope setting, With the cope plate (5) bottom around the setting of convex mouth (52) of the chamber (51) corresponding cladding, and the convex mouth (52) is around institute State chamber (51) setting.

8. 32AH battery jar hot flow path one according to claim 1 goes out four mould structures, which is characterized in that the push Component (71) includes:

The lower end of first guide rod (711), first guide rod (711) is connected on the lower template (8), thereon end It penetrates the push plate (7), the push plate (7) is slided along first guide rod (711) to be arranged；

Second guide rod (712), the upper end of second guide rod (712) connect setting, lower end sliding with the push plate (7) It is set on the lower template (8)；And

Push rod (713), push rod (713) upper end connect setting with the push plate (7), and lower end is slideably positioned in described In lower template (8), and its lower end is provided with and engages with the lower template (8), the cylinder limited to the push plate (7) Limiting section (714).

9. 32AH battery jar hot flow path one according to claim 1 go out four mould structures, which is characterized in that it is described enter son Unit (81) include the length direction equidistant arrangement along the chamber (51) it is several enter sub (811), this enter sub (811) with it is described Single lattice (501) in battery jar (50) is arranged in a one-to-one correspondence, and be located at chamber (51) the length direction two sides it is described enter son (811) the equal camber outwardly convex setting in the position of side wall where corresponding chamber (51) width direction.

10.32AH battery jar forming method, which comprises the following steps:

Step 1: mold flow analysis, using MOLDFLOW mold flow analysis software to the shape and injection moulding of the battery jar of 32AH Condition carries out sunykatuib analysis, and 32AH battery jar hot flow path one described in any one of design the claims 1 to 9 goes out four Mould structure；

Step 2: material prepares, plastic grain heating, drying evaporation water, drying temperature is 80-90 DEG C, and drying time is 2 small When；

Step 3: fusion plastification, plastic grain is added to inside injecting machine material tube, by heating and screw in injection molding machine by hopper Feed particulate material is become molten condition by rotation, and melt plastic cement temperature is 220 DEG C；

Step 4: mold-closing injection, upper mold assembly (10) and lower mould assembly (20) make convex mouth by the guide-localization of guide rod and guide sleeve (52) it plugs together and is molded with tiger's jaw (70), after molding, injection molding machine is by the raw material after hot melt by feed nozzle (61) along sprue (611) in the average branch flow passage (612) for being diverted to sprue (611) two sides, then two sides are averagely diverted to by branch flow passage (612) Runner (613) in, the most central point in a center of symmetry setting that is injected into along chamber (51) average through runner (613) afterwards Material injection nozzle (61) in, be injected into the chamber (51) after molding by material injection nozzle (61), and carry out pressure maintaining processing, wherein note Injection pressure is 120-130Mpa, and the stage injection time is 9-12s, dwell pressure 95-105Mpa, dwell time 5-7s；

Step 5: it is cooling, after raw material injection pressure maintaining terminates, stops into glue, coolant liquid is passed through to chamber by coolant flow channel (51) raw material in carries out cooling treatment, cooling time 35-45s；

Step 6: die sinking pickup, after to be cooled, upper mold assembly (10) and lower mould assembly (20) are opened, and injection molding machine mandril is made It uses on the push rod (713) being connected with push plate (7), push plate (7) is released along the first guide rod (711) and the second guide rod (712), is led to Crossing push plate (7) will be buckled in entering the 32AH battery jar on sub (811) and push disengaging outward to export；

Step 7: product testing, after molding 32AH battery jar placement 12h is fully cooled, to battery size into Row measurement, while length-width direction is detected because of the deflection generated that shrinks, guarantee that size meets the margin of tolerance of production requirement.