CN104149288A

CN104149288A - Automobile evaporator shell hot runner mold capable of ejecting workpieces

Info

Publication number: CN104149288A
Application number: CN201410359311.7A
Authority: CN
Inventors: 吴光武
Original assignee: CHENGDU XINGBODA PRECISION MACHINERY Co Ltd
Current assignee: CHENGDU XINGBODA PRECISION MACHINERY Co Ltd
Priority date: 2014-07-28
Filing date: 2014-07-28
Publication date: 2014-11-19

Abstract

The invention discloses an automobile evaporator shell hot runner mold capable of ejecting workpieces. A supporting plate is arranged between a mold cavity plate and a moving mold plate; a mold core fixing plate is arranged between the supporting plate and the mold cavity plate; a mold core is arranged between the mold core fixing plate and the mold cavity plate, is arranged in the mold core fixing plate, and indents to form a cavity; the mold cavity plate is internally provided with material injection channels; the supporting plate is internally provided with an installation cavity; a hydraulic core-pulling mechanism is arranged in the installation cavity and is fixed to the mold cavity plate; a hot runner system is communicated with the interior of the cavity; a hollow support seat is arranged between the support plate and the moving mold plate, and is provided with a push plate; the push plate is provided with a push rod; the push rod is in contact with the cavity; the moving mold plate is provided with a push pipe; the push pipe penetrates through the push plate, a push plate fixing plate, the supporting plate, the mold core fixing plate and the mold core, and then is arranged in the cavity. The mold is provided with the flat push rod and the push pipe, so that the ejector mark defect cannot be generated, and the workpieces cannot be damaged.

Description

A kind of automobile evaporator upper shell hot runner mould that can eject workpiece

Technical field

The present invention relates to a kind of mould, especially relate to a kind of automobile evaporator upper shell hot runner mould that can eject workpiece.

Background technology

Mould, is the instrument for formed article, and this instrument consists of various parts.It mainly realizes the processing of article profile by the change of institute's moulding material physical state.Conventionally use in industry, in order to injection moulding, blowing, extrude, various moulds and instrument that the method such as die casting or forging forming, smelting, punching press, stretching obtains required product.Mould kind is a lot, can be divided into: the mould of the mould of processing metal and machining of non-metallic and powder metallurgy according to processing object and processing technology.By the difference of the material of institute's moulding, mould can be divided into hardware dies, plastic mould, with and special dies.According to design feature, mould can be divided into again the blanking die of plane and have the swaging die in space.Make under external force blank become the instrument of the product that has given shape and size.Be widely used in stamping-out, die forging, cold-heading, extruding, metallic sintered products compacting, compression casting, and during the compression moulding of goods such as engineering plastics, rubber, pottery or the shaping of injection moulding process.Mould has specific profile or cavity shape, and the contour shape that application has cutting edge can make blank, by outline line shape, separated (stamping-out) occur.Application cavity shape can make blank obtain corresponding three-dimensional shape.Mould generally comprises dynamic model and two parts of cover half (or punch and die), the two partable.In the time of separately, take out product, while closing up, make blank inject mold cavity and be shaped.Mould is precision instrument, complex-shaped, bears the expansive force of blank, and structural strength, rigidity, case hardness, surface roughness and machining accuracy are all had higher requirements, and the development level that mould is produced is one of important symbol of machine-building level.Evaporimeter upper shell construction profile is of a size of 1000 mm * 320 mm * 75mm, and wall thickness is 3.0 mm, and material adopts the ABS/PC of the TL of Volkswagen 52231 standards.It is a plastic in Multifunctional commerce car air-conditioning system, is arranged on automobile inner top, relies on the metallic support on both sides to support fixing.This plastic belongs to automobile appearance part, and there is dermatoglyph side, requires specious.Dermatoglyph region, side does not allow to occur the defects such as scuffing, bubble, shrinkage cavity and crazing.Plastic also requires to have higher curved intensity, notch impact toughness, thermomechanical stability, higher cold resistance, higher colour fasteness to sunlight and the anti-flammability preferably preferably preferably of disturbing.Function muscle and the plastic inner wall surface spacing of housing are very little, but plastic is very large to the package power of mould herein, demoulding difficulty, the push rod in existing mold be all immediate roof to plastic wall, when package power is larger, easily push up bad plastic or produce top white.

Summary of the invention

The push rod that the object of the invention is to overcome in above-mentioned existing mold is all that immediate roof is to plastic wall, when package power is larger, easily white problem is pushed up in bad plastic of top or generation, designed a kind of automobile evaporator upper shell hot runner mould that can eject workpiece, this mould is by arrange flat ejector pin and ejector sleeve simultaneously, ejector sleeve is withstood on the cylinder table between function muscle and plastic inwall, there will not be the white defect in top, flat ejector pin cross-sectional area acts on greatly in workpiece wall not can defective work piece, having solved the push rod in existing mold is all that immediate roof is to plastic wall, when package power is larger, easily white problem is pushed up in bad plastic of top or generation.

Object of the present invention is achieved through the following technical solutions: a kind of automobile evaporator upper shell hot runner mould that can eject workpiece, comprise cavity plate and moving platen, described cavity plate be arranged on moving platen directly over, between cavity plate and moving platen, be provided with gripper shoe, between gripper shoe and cavity plate, be provided with core fixing plate, the bottom of core fixing plate contacts with the top of gripper shoe, between core fixing plate and cavity plate, be provided with core, the bottom of core is arranged in core fixing plate, the top of core is arranged in cavity plate, core forms cavity near one end indent of cavity plate, in cavity plate, be provided with material feeding passage, material feeding passage passes the two ends of cavity plate and is communicated with cavity, in described gripper shoe, be provided with installation cavity, in installation cavity, be provided with hydraulic core pulling mechanism, the bottom of hydraulic core pulling mechanism is fixed on the bottom of installation cavity, and the top of hydraulic core pulling mechanism and the bottom of cavity plate are fixed, and hydraulic core pulling mechanism can promote the movement that cavity plate is carried out vertical, directly over described cavity plate, be provided with TOP-TIP, TOP-TIP is communicated with cavity inside, between described gripper shoe and moving platen, be provided with the supporting seat of inner hollow, the two ends of supporting seat contact with moving platen with gripper shoe respectively, the inside of supporting seat is provided with push pedal, between push pedal and moving platen, be provided with cushion block, the two ends of cushion block contact with moving platen with push pedal respectively, the top of push pedal is provided with push pedal fixed head, push pedal fixed head is arranged on supporting seat inside, in push pedal, be provided with push rod, bottom and the push pedal of push rod are fixed, the top of push rod is successively through push pedal fixed head, gripper shoe, core fixing plate, after core, contact with cavity, on moving platen, be provided with ejector sleeve, the bottom of ejector sleeve is fixed in moving platen, the top of ejector sleeve is successively through push pedal, push pedal fixed head, gripper shoe, core fixing plate, after core, be arranged in cavity.

Described TOP-TIP comprises nozzle, hot runner manifold, hot-fluid pipeline, heating plate, temperature sensor and installing plate, installing plate be arranged on cavity plate directly over, in installing plate, be provided with centring ring, the bottom of centring ring is arranged in cavity plate, hot-fluid pipeline is through centring ring, nozzle is arranged on installing plate below, nozzle is connected with hot-fluid pipeline, temperature sensor is enclosed within nozzle outer wall and is connected with the inside of nozzle, heating plate is arranged between installing plate and cavity plate, and heating plate and installing plate are fixed, hot runner manifold is arranged on heating plate, nozzle, temperature sensor and hot-fluid pipeline are all fixed on hot runner manifold, the bottom of nozzle is inserted in material feeding passage and with cavity and is communicated with.

On the top end face of described push pedal, be provided with release link, bottom and the push rod of release link are fixed, and the top of release link and the bottom of gripper shoe are fixed, and on the outer wall of release link, are sheathed with spring, and the two ends of spring contact with gripper shoe with push pedal fixed head respectively.

In described gripper shoe, be provided with guide pillar, the bottom of guide pillar is welded on the top end face of gripper shoe, and the top of guide pillar is arranged in cavity plate through core fixing plate, is provided with guide pin bushing in cavity plate, the two ends of guide pin bushing are communicated with the two ends of cavity plate respectively, and guide pin bushing is linked on the outer wall of guide pillar.

In sum, the invention has the beneficial effects as follows: this mould is by arrange flat ejector pin and ejector sleeve simultaneously, ejector sleeve is withstood on the cylinder table between function muscle and plastic inwall, there will not be the white defect in top, flat ejector pin cross-sectional area acts on greatly in workpiece wall not can defective work piece, solved the push rod in existing mold and be all immediate roof to plastic wall, when package power is larger, has easily pushed up bad plastic or produce the white problem in top.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention.

Mark and corresponding parts title in accompanying drawing: 1-installing plate; 2-heating plate; 3-hot-fluid pipeline; 4-centring ring; 5-nozzle; 6-temperature sensor; 7-hot runner manifold; 8-material feeding passage; 9-cavity plate; 10-core fixing plate; 11-hydraulic core pulling mechanism; 12-installation cavity; 13-release link; 14-spring; 15-supporting seat; 16-moving platen; 17-push pedal; 18-connecting through hole; 19-cushion block; 20-push pedal fixed head; 21-push rod; 22-gripper shoe; 23-guide pillar; 24-guide pin bushing; 25-core; 26-cavity; 27-ejector sleeve.

The specific embodiment

Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited only to this.

Embodiment 1:

As shown in Figure 1, a kind of automobile evaporator upper shell hot runner mould that can eject workpiece, comprise cavity plate 9 and moving platen 16, described cavity plate 9 be arranged on moving platen 16 directly over, between cavity plate 9 and moving platen 16, be provided with gripper shoe 22, between gripper shoe 22 and cavity plate 9, be provided with core fixing plate 10, the bottom of core fixing plate 10 contacts with the top of gripper shoe 22, between core fixing plate 10 and cavity plate 9, be provided with core 25, the bottom of core 25 is arranged in core fixing plate 10, the top of core 25 is arranged in cavity plate 9, core 25 forms cavity 26 near one end indent of cavity plate 9, in cavity plate 9, be provided with material feeding passage 8, material feeding passage 8 passes the two ends of cavity plate 9 and is communicated with cavity 26, in described gripper shoe 22, be provided with installation cavity 12, in installation cavity 12, be provided with hydraulic core pulling mechanism 11, the bottom of hydraulic core pulling mechanism 11 is fixed on the bottom of installation cavity 12, the bottom of the top of hydraulic core pulling mechanism 11 and cavity plate 9 is fixed, and hydraulic core pulling mechanism 11 can promote cavity plate 9 and carries out the movement of vertical, directly over described cavity plate 9, be provided with TOP-TIP, TOP-TIP and cavity 26 internal communication, between described gripper shoe 22 and moving platen 16, be provided with the supporting seat 15 of inner hollow, the two ends of supporting seat 15 contact with moving platen 16 with gripper shoe 22 respectively, the inside of supporting seat 15 is provided with push pedal 17, between push pedal 17 and moving platen 16, be provided with cushion block 19, the two ends of cushion block 19 contact with moving platen 16 with push pedal 17 respectively, the top of push pedal 17 is provided with push pedal fixed head 20, push pedal fixed head 20 is arranged on supporting seat 15 inside, in push pedal 17, be provided with push rod 21, the bottom of push rod 21 and push pedal 17 are fixing, the top of push rod 21 is successively through push pedal fixed head 20, gripper shoe 22, core fixing plate 10, after core 25, contact with cavity 26, on moving platen 16, be provided with ejector sleeve 27, the bottom of ejector sleeve 27 is fixed in moving platen 16, the top of ejector sleeve 27 is successively through push pedal 17, push pedal fixed head 20, gripper shoe 22, core fixing plate 10, after core 25, be arranged in cavity 26.Hydraulic core pulling mechanism 11 itself is existing parts, to realize and loosing core as power by hydraulic coupling, cavity plate 9 is backed down or furthered, pressing cavity plate 9 and core 25, be convenient to control its distance, also make the distance between injection moulding process cavity plate 9 and core 25 there will not be variation, when withdrawing pattern feeding, need to control hydraulic core pulling mechanism 11 first by the cavity plate 9 release cores 25 in top, expose cavity 26, workpiece in cavity 26 ejects under the effect of push rod 21, take out, and then by cavity plate 9 core 25 enclosed cavities 26 that further, again by material feeding passage 8, carry out injection moulding, so cyclically carry out work.Blind hole on 4 cylinder tables on plastic becomes 2D angle with stripping direction, must first deviate from blind hole, and then the whole plastic demoulding.The release method of blind hole is a lot, but due to the blind hole that will loose core residing position and excessive with the angle of stripping direction on plastic, adopts mechanical Angle Pin to loose core unstable reliable, and deadlock phenomenon easily occurs, and die boundary dimensions also will increase greatly.Employing is inserted and is taken out mode with plastic, although die cost reduces.But increased operating personnel's labour intensity, the injection production cycle is elongated, and plastic also easily produces overlap.Now adopt hydraulic core pulling mechanism, solved above-mentioned defect, reduced mould sunset screen dimensions, improved production efficiency, saved production cost.2 narrow and high function muscle on plastic, if mould adopts monolithic construction, function muscle adopts common spark machined, cannot effectively carry out surface finish processing, function muscle area surfaces roughness is poor, can affect the plastic demoulding, also easily at this near zone, produces top in vain.In order to address the above problem, mold cores has adopted inlaid type structure, has so just solved mold polish problem.Due to function muscle and plastic inner wall surface spacing very little, but plastic is very large to the package power of mould herein, therefore demoulding difficulty must add ejecting mechanism herein.If select separately round push rod, rod diameter is very little, and maximum can only be got $ 4m; If select separately flat ejector pin, push rod cross-sectional area can be obtained greatly.These 2 kinds of modes are all that immediate roof is to plastic wall, when package power is larger, easily bad plastic of top or generation top are white, this mould, by flat ejector pin and ejector sleeve 27 are set simultaneously, withstands on ejector sleeve 27 on the cylinder table between function muscle and plastic inwall, there will not be the white defect in top, flat ejector pin cross-sectional area acts on greatly in workpiece wall not can defective work piece, solved the push rod in existing mold and be all immediate roof to plastic wall, when package power is larger, has easily pushed up bad plastic or produce the white problem in top.

Described TOP-TIP comprises nozzle 5, hot runner manifold 7, hot-fluid pipeline 3, heating plate 2, temperature sensor 6 and installing plate 1, installing plate 1 be arranged on cavity plate 9 directly over, in installing plate 1, be provided with centring ring 4, the bottom of centring ring 4 is arranged in cavity plate 9, hot-fluid pipeline 3 is through centring ring 4, nozzle 5 is arranged on installing plate 1 below, nozzle 5 is connected with hot-fluid pipeline 3, temperature sensor 6 is enclosed within nozzle 5 outer walls and is connected with the inside of nozzle 5, heating plate 2 is arranged between installing plate 1 and cavity plate 9, and heating plate 2 is fixing with installing plate 1, hot runner manifold 7 is arranged on heating plate 2, nozzle 5, temperature sensor 6 and hot-fluid pipeline 3 are all fixed on hot runner manifold 7, the bottom of nozzle 5 is inserted in material feeding passage 8 and with cavity 26 and is communicated with.Because evaporator shell projected area is very large, and long especially, on plastic, also have 2 very narrow and high function muscle; Also because raw material are ABS/PC, and adopted toughness reinforcingly, mobility is very poor, adopts common flow passage system to fill difficulty, and easily produces the defects such as weld mark, makes produced plastic performance not reach requirement, and produces the solidifying material of a large amount of running gate systems.By plastic component structure, performance, functional requirement are analyzed, determine that mould adopts TOP-TIP, 6 place's point gate feedings, because do not add glass fibre in evaporimeter upper shell material, belong to common engineering plastics, therefore adopt needle jet, sharp mouth material adopts iron copper, surface titanizing is processed, and needle jet has the following advantages: 1. on goods, can not leave gate vestiges; 2. in the time of die sinking can being prevented, there is leading silk and salivation phenomenon; 3. when screw in injection molding machine retreats, can effectively prevent back suction material from die cavity; 4. can coordinate sequential control to reduce molding product weld marks, reduce plastic distortion.Nozzle adopts high rigidity mouth body, high heat-barrier material heat insulation loop and collet, high abrasion, high heat insulation sprue bush and mouth core, can effectively stop thermal loss, improves service life.The main task of hot runner manifold is to keep, under constant temperature, melt is sent into each single nozzles from sprue, makes melt Pressure Drop in transport process as far as possible little, does not allow material degradation.Heating plate 2 is as heating element heater, adopt after hot flow path injection moulding, melt temperature in temperature sensor 6 monitoring nozzles 5, prevent the cooling evaporator shell that causes too soon of temperature and produce slight crack, mold filling is convenient, can improve the ratio of briquetting of evaporator shell, can not produce the defects such as weld mark, improve Forming Quality, can not produce the solidifying material of running gate system, reduced plastic cost.

On the top end face of described push pedal 17, be provided with release link 13, the bottom of release link 13 and push rod 21 are fixing, the bottom of the top of release link 13 and gripper shoe 22 is fixed, and is sheathed with spring 14 on the outer wall of release link 13, and the two ends of spring 14 contact with gripper shoe 22 with push pedal fixed head 20 respectively.Release link 13 is to keep the mould after action to realize reset function, thereby work next time, fit spring 14 on the outer wall of release link 13, utilize the elasticity of spring 14, make between release link 13 and gripper shoe 22 is to have an elastic force all the time, and the two ends of spring 14 are weldingly fixed in push pedal fixed head 20 and gripper shoe 22, reducing gripper shoe 22 contacts firmly with the direct of supporting seat 15, when release link 13 resets, can use spring 14 elastic resets, increase the service life of release link 13.

In described gripper shoe 22, be provided with guide pillar 23, the bottom of guide pillar 23 is welded on the top end face of gripper shoe 22, the top of guide pillar 23 is arranged in cavity plate 9 through core fixing plate 10, in cavity plate 9, be provided with guide pin bushing 24, the two ends of guide pin bushing 24 are communicated with the two ends of cavity plate 9 respectively, and guide pin bushing 24 is linked on the outer wall of guide pillar 23.The setting of guide pillar 23 and guide pin bushing 24, is to determine that in moulding each time, the track that parts move is to remain on same straight line, and the workpiece size that makes batch production is standard more, and qualification rate is higher, and the workpiece of same batch can directly be changed.

The above; it is only preferred embodiment of the present invention; not the present invention is done to any pro forma restriction, any simple modification, equivalent variations that every foundation technology of the present invention, method are done above embodiment in fact, within all falling into protection scope of the present invention.

Claims

1. the automobile evaporator upper shell hot runner mould that can eject workpiece, it is characterized in that: comprise cavity plate (9) and moving platen (16), described cavity plate (9) be arranged on moving platen (16) directly over, between cavity plate (9) and moving platen (16), be provided with gripper shoe (22), between gripper shoe (22) and cavity plate (9), be provided with core fixing plate (10), the bottom of core fixing plate (10) contacts with the top of gripper shoe (22), between core fixing plate (10) and cavity plate (9), be provided with core (25), the bottom of core (25) is arranged in core fixing plate (10), the top of core (25) is arranged in cavity plate (9), core (25) forms cavity (26) near one end indent of cavity plate (9), in cavity plate (9), be provided with material feeding passage (8), material feeding passage (8) passes the two ends of cavity plate (9) and is communicated with cavity (26), in described gripper shoe (22), be provided with installation cavity (12), in installation cavity (12), be provided with hydraulic core pulling mechanism (11), the bottom of hydraulic core pulling mechanism (11) is fixed on the bottom of installation cavity (12), the bottom of the top of hydraulic core pulling mechanism (11) and cavity plate (9) is fixed, and hydraulic core pulling mechanism (11) can promote cavity plate (9) and carries out the movement of vertical, directly over described cavity plate (9), be provided with TOP-TIP, TOP-TIP and cavity (26) internal communication, between described gripper shoe (22) and moving platen (16), be provided with the supporting seat (15) of inner hollow, the two ends of supporting seat (15) contact with moving platen (16) with gripper shoe (22) respectively, the inside of supporting seat (15) is provided with push pedal (17), between push pedal (17) and moving platen (16), be provided with cushion block (19), the two ends of cushion block (19) contact with moving platen (16) with push pedal (17) respectively, the top of push pedal (17) is provided with push pedal fixed head (20), push pedal fixed head (20) is arranged on supporting seat (15) inside, in push pedal (17), be provided with push rod (21), the bottom of push rod (21) and push pedal (17) are fixing, the top of push rod (21) is successively through push pedal fixed head (20), gripper shoe (22), core fixing plate (10), after core (25), contact with cavity (26), on moving platen (16), be provided with ejector sleeve (27), the bottom of ejector sleeve (27) is fixed in moving platen (16), the top of ejector sleeve (27) is successively through push pedal (17), push pedal fixed head (20), gripper shoe (22), core fixing plate (10), after core (25), be arranged in cavity (26).

2. a kind of automobile evaporator upper shell hot runner mould that can eject workpiece according to claim 1, it is characterized in that: described TOP-TIP comprises nozzle (5), hot runner manifold (7), hot-fluid pipeline (3), heating plate (2), temperature sensor (6) and installing plate (1), installing plate (1) be arranged on cavity plate (9) directly over, in installing plate (1), be provided with centring ring (4), the bottom of centring ring (4) is arranged in cavity plate (9), hot-fluid pipeline (3) is through centring ring (4), nozzle (5) is arranged on installing plate (1) below, nozzle (5) is connected with hot-fluid pipeline (3), temperature sensor (6) is enclosed within nozzle (5) outer wall and is connected with the inside of nozzle (5), heating plate (2) is arranged between installing plate (1) and cavity plate (9), and heating plate (2) is fixing with installing plate (1), hot runner manifold (7) is arranged on heating plate (2), nozzle (5), temperature sensor (6) and hot-fluid pipeline (3) are all fixed on hot runner manifold (7), the bottom of nozzle (5) is inserted in material feeding passage (8) and with cavity (26) and is communicated with.

3. a kind of automobile evaporator upper shell hot runner mould that can eject workpiece according to claim 1, it is characterized in that: on the top end face of described push pedal (17), be provided with release link (13), the bottom of release link (13) and push rod (21) are fixing, the bottom of the top of release link (13) and gripper shoe (22) is fixed, on the outer wall of release link (13), be sheathed with spring (14), the two ends of spring (14) contact with gripper shoe (22) with push pedal fixed head (20) respectively.

4. a kind of automobile evaporator upper shell hot runner mould that can eject workpiece according to claim 1, it is characterized in that: in described gripper shoe (22), be provided with guide pillar (23), the bottom of guide pillar (23) is welded on the top end face of gripper shoe (22), the top of guide pillar (23) is arranged in cavity plate (9) through core fixing plate (10), in cavity plate (9), be provided with guide pin bushing (24), the two ends of guide pin bushing (24) are communicated with the two ends of cavity plate (9) respectively, and guide pin bushing (24) is linked on the outer wall of guide pillar (23).