Plastic shell injection mold

Abstract

The utility model relates to the technical field of injection molds, in particular to a plastic shell injection mold which comprises a bottom plate, a lower mold body is arranged above the bottom plate, an upper mold body is arranged above the lower mold body, a demolding sealing mechanism is arranged in the lower mold body, and a material pushing and cleaning mechanism is arranged behind the demolding sealing mechanism. According to the utility model, the expanded sealing ring is matched with the annular groove on the upper mold, so that the sealing performance of the joint of the lower mold and the upper mold can be improved, and the influence on the flatness of the surface of a molded product caused by external air entering from the joint of the lower mold and the upper mold is avoided; the surface of the formed product and the inner attaching position of the mold groove are completely separated after being evenly stressed, deformation caused by demolding due to the fact that the formed product which is not completely cooled is uneven in stress is avoided, and the demolding efficiency and the finished product effect are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold technical field, concretely is a plastic shell injection mold. BACKGROUND

[0002] The electric gun plastic shell injection mold is an important tool for producing plastic parts such as electric vehicle charging gun shells, and the design and manufacturing process of the injection mold is very important because it directly affects the appearance quality, structural strength, service life and production efficiency of the charging gun. The design and manufacturing of the charging gun plastic shell injection mold is a high-precision and high-demand process involving material selection, mold design, processing technology, production control and other aspects. Through fine design and manufacturing, the quality and function of the charging gun shell can meet market demand.

[0003] The current charging gun plastic shell injection mold mostly has the problem of joint affecting air tightness and affecting product forming quality at the joint of the lower mold and the upper mold. In view of this, a plastic shell injection mold is proposed to solve the above problems. INVENTION CONTENTS

[0004] The utility model discloses a plastic shell injection mold, which solves the problem of increasing the sealing property of the joint of the lower mold and the upper mold, and avoids the influence of external air entering from the joint of the lower mold and the upper mold on the flatness of the formed product surface.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A plastic shell injection mold, comprising a bottom plate, a lower mold disposed above the bottom plate, an upper mold disposed above the lower mold, a demolding sealing mechanism disposed inside the lower mold, and a pushing and cleaning mechanism disposed behind the demolding sealing mechanism.

[0007] Preferably, the demolding sealing mechanism seals the joint of the lower mold and the upper mold.

[0008] Preferably, the top surface of the lower mold is fixedly connected with a support rod, the top end of the support rod is fixedly connected with a top plate, the top surface of the top plate is installed with a hydraulic rod, and the top surface of the upper mold is fixedly connected with a lifting seat.

[0009] Preferably, the demolding sealing mechanism comprises an upper pull rod, the upper pull rod is provided with two rods, the bottom end of each upper pull rod is slidingly connected with a sleeve, the bottom end of the sleeve is fixedly connected with a lower pull rod, the side surface of the sleeve is fixedly connected with two gas supply pipes, and one end of each gas supply pipe away from the sleeve is fixedly connected with a sealing ring.

[0010] Preferably, the bottom end of the pull-down rod is fixedly connected with a connecting block, the upper side of the connecting block is fixedly connected with a lifting plate, the top end of the lifting plate is fixedly connected with three top die rods, the top surface of each top die rod is fixedly connected with a top die block, and the inner wall top end of the lower die is fixedly connected with a die groove.

[0011] Preferably, the sealing ring is fixedly connected with the top surface of the lower die, the bottom surface of the upper die is provided with a ring groove matched with the sealing ring, the inside of the sealing ring is a hollow structure, the upper pull-down rod is fixedly connected with the side surface of the upper die, the lifting plate is slidingly connected with the lower die, the die groove is slidingly connected with the top die block, the inside of the sleeve is provided with a reset spring, both ends of the reset spring are fixedly connected with the upper pull-down rod and the lower pull-down rod respectively, and the inside bottom surface of the die groove is provided with a through groove.

[0012] Preferably, the pushing and cleaning mechanism comprises two bending rods, each bending rod is fixedly connected with the rear surface of the upper die, the end, away from the upper die, of the bending rod is fixedly connected with a supporting rod, the outside of the supporting rod is slidingly connected with a supporting groove plate, the end, away from the lower die, of the supporting groove plate is slidingly connected with a pressing rod on the inside, both ends of the pressing rod are fixedly connected with sliding push rods, the end, away from the pressing rod, of the sliding push rod is fixedly connected with a push plate, the front side of the push plate is slidingly connected with a replacement strip, the side of the replacement strip is hingedly connected with an elastic scraper, and the top end of the lower die is fixedly connected with slide rod seats on both sides.

[0013] Preferably, the supporting groove plate is hingedly connected with the rear side of the lower die, the slide rod seat is slidingly connected with the sliding push rod, the elastic scraper is of an elastic structure, and the cross section shape of the bottom end of the elastic scraper is arc-shaped.

[0014] By means of the above technical scheme, the plastic shell injection mold is provided.

[0015] (1) The mold sealing mechanism is arranged, the sealing ring after expansion is matched with the ring groove on the upper die, the sealing property of the joint between the lower die and the upper die is improved, the outside air is prevented from entering the joint between the lower die and the upper die to affect the flatness of the surface of the formed product, meanwhile, the top die rod passes through the inside of the die groove and pushes the formed mold upwards to make the surface of the formed product completely separate from the die groove after the surface of the formed product and the inside of the die groove are uniformly stressed, the deformation of the formed product caused by uneven stress during demolding is avoided, and the demolding efficiency and the finished product effect are improved.

[0016] (2), the utility model discloses a push material cleaning mechanism is set up, make the fragment of spade to fall into to the mould groove, and discharge from the through slot in mould groove, thereby prevent the residual fragment from influencing the lower mould and upper mould to close and influence sealing effect and forming effect, simultaneously, when the elastic scraper resets, elastic scraper is deflected around replacement strip and restores deformation, reduces the friction between reset elastic scraper and lower mould, and through elastic scraper also can play the role of transferring the material of demoulding mould. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings, which are included to provide a further understanding of the present application and are incorporated in and constitute a part of this application, illustrate embodiments of the present application and serve to explain the principles of the present application.

[0018] Figure 1 It is the whole front perspective structure schematic diagram of the utility model;

[0019] Figure 2 It is the rear perspective structure schematic diagram in the utility model;

[0020] Figure 3 It is the structure schematic diagram of the demoulding sealing mechanism in the utility model;

[0021] Figure 4 It is the structure schematic diagram of the push material cleaning mechanism in the utility model;

[0022] Figure 5 It is the push plate connecting structure schematic diagram in the utility model;

[0023] Figure 6 It is the structure schematic diagram of the utility model in Figure 5 The enlarged structure schematic diagram of A in it.

[0024] In the drawing: 1, bottom plate; 2, lower mould; 3, upper mould; 4, support rod; 5, demoulding sealing mechanism; 51, upper pull rod; 52, sleeve; 53, lower pull rod; 54, gas delivery pipe; 55, sealing ring; 56, connecting block; 57, lifting plate; 58, top die rod; 59, top die block; 510, mould groove; 6, push material cleaning mechanism; 61, bent rod; 62, support rod; 63, support groove plate; 64, pressure applying rod; 65, sliding push rod; 66, push plate; 67, sliding rod seat; 68, replacement strip; 69, elastic scraper; 7, top plate; 8, hydraulic rod; 9, lifting seat. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the utility model.

[0026] Please refer to Figures 1-6 As shown in the technical scheme, the utility model provides a kind of technical scheme: a plastic shell injection mold, including bottom plate 1, the upper portion of bottom plate 1 is provided with lower mould 2, the upper portion of lower mould 2 is provided with upper mould 3, the inside of lower mould 2 is provided with demoulding sealing mechanism 5, the rear of demoulding sealing mechanism 5 is provided with push material cleaning mechanism 6;

[0027] Demoulding sealing mechanism 5 seals the junction of lower mould 2 and upper mould 3.

[0028] The top surface of lower mould 2 is fixedly connected with support rod 4, the top end of support rod 4 is fixedly connected with top plate 7, the top surface of top plate 7 is installed with hydraulic rod 8, and the top surface of upper mould 3 is fixedly connected with lifting seat 9.

[0029] In the embodiment, demoulding sealing mechanism 5 includes upper pull rod 51, upper pull rod 51 is provided with two rods, the bottom end of each upper pull rod 51 is slidably connected with sleeve 52, the bottom end of sleeve 52 is fixedly connected with lower pull rod 53, the side surface of sleeve 52 is fixedly connected with two gas conveying pipes 54, one end of each gas conveying pipe 54 away from sleeve 52 is fixedly connected with sealing ring 55, the bottom end of lower pull rod 53 is fixedly connected with connecting block 56, the upper portion of connecting block 56 is fixedly connected with lifting plate 57, the top end of lifting plate 57 is fixedly connected with three top die rods 58, the top surface of each top die rod 58 is fixedly connected with top die block 59, the inner wall top end of lower mould 2 is fixedly connected with mould groove 510, sealing ring 55 is fixedly connected with the top surface of lower mould 2, the bottom surface of upper mould 3 is provided with ring groove matched with sealing ring 55, the inside of sealing ring 55 is hollow structure, upper pull rod 51 is fixedly connected with the side surface of upper mould 3, lifting plate 57 is slidably connected with lower mould 2, mould groove 510 is slidably connected with top die block 59, the inside of sleeve 52 is provided with reset spring, and both ends of reset spring are fixedly connected with upper pull rod 51 and lower pull rod 53 respectively, the inside bottom surface of mould groove 510 is provided with through slot, after the inside of sealing ring 55 is filled with air and expands, and is matched with the ring groove of upper mould 3 through sealing ring 55, the sealing property of the junction of lower mould 2 and upper mould 3 can be increased through the matching of expanded sealing ring 55 and the ring groove of upper mould 3, so that the outside air entering from the joint of lower mould 2 and upper mould 3 can be avoided to affect the flatness of the surface of forming product, then upper pull rod 51 drives reset spring to reset by driving upper mould 3, then upper pull rod 51 drives sleeve 52 to drive lower pull rod 53 to move upward, lower pull rod 53 drives connecting block 56 to move lifting plate 57 to make top die rod 58 drive top die block 59 to move upward, at this time, top die rod 58 passes through the inside of mould groove 510, and the formed mould is pushed out upward.

[0030] In the embodiment, the pushing and cleaning mechanism 6 comprises two bent rods 61, each of which is fixedly connected to the rear surface of the upper mold 3, and the end of the bent rod 61 away from the upper mold 3 is fixedly connected with a supporting rod 62, the outer side of the supporting rod 62 is slidingly connected with a supporting groove plate 63, the inner side of the end of the supporting groove plate 63 away from the lower mold 2 is slidingly connected with a pressing rod 64, both ends of the pressing rod 64 are fixedly connected with sliding push rods 65, the end of the sliding push rod 65 away from the pressing rod 64 is fixedly connected with a push plate 66, the front side of the push plate 66 is slidingly connected with a replacement strip 68, the side of the replacement strip 68 is hingedly connected with an elastic scraper 69, both sides of the top end of the lower mold 2 are fixedly connected with sliding rod seats 67, the supporting groove plate 63 is hingedly connected with the rear side of the lower mold 2, the sliding rod seat 67 is slidingly connected with the sliding push rod 65, the elastic scraper 69 is of an elastic structure, and the cross section shape of the bottom end of the elastic scraper 69 is arc-shaped, the supporting groove plate 63 in the overturning state pushes the pressing rod 64 to move, the pressing rod 64 moves to drive the connected sliding push rod 65 to slide along the sliding rod seat 67, so that the sliding push rod 65 pushes the push plate 66 to move, the replacement strip 68 connected with the side of the push plate 66 contacts the top surface of the lower mold 2 through the elastic scraper 69, the elastic scraper 69 in the bending state scrapes and cleans the residual burrs and scraps on the upper surface of the lower mold 2, the scraped scraps fall into the mold groove 510 and are discharged from the through slot in the mold groove 510, so that the residual scraps do not affect the closing of the lower mold 2 and the upper mold 3, and the sealing effect and the forming effect are affected, and meanwhile, when the elastic scraper 69 is reset, the elastic scraper 69 is deflected around the replacement strip 68 and recovers the deformation.

[0031] The hydraulic rod 8 on the supporting rod 4 extends downward under the driving of the external hydraulic pump, pushes the lifting seat 9 through the extension, and makes the upper mold 3 close to the lower mold 2 along the supporting rod 4, at this time, the upper mold 3 is pressed in the reset spring in the extrusion sleeve 52 through the connected upper pulling rod 51, and the air in the extrusion sleeve 52 is discharged into the sealing ring 55 through the connected gas conveying pipe 54, when the inside of the sealing ring 55 is filled with air and expands, and is attached to the ring groove of the upper mold 3 through the sealing ring 55, the sealing property of the joint of the lower mold 2 and the upper mold 3 is increased through the engagement of the expanded sealing ring 55 and the ring groove of the upper mold 3, and the outside air is prevented from entering from the joint of the lower mold 2 and the upper mold 3 to affect the flatness of the surface of the formed product;

[0032] When the hydraulic rod 8 is in the retracted state, the lifting seat 9 drives the upper die 3 to move upward, at this time the upper die 3 drives the upper pull rod 51 to pull the reset spring, then the upper pull rod 51 drives the sleeve 52 to pull the lower pull rod 53 to move upward together, the lower pull rod 53 moves to drive the connecting block 56 to connect the lifting plate 57 to make the top die rod 58 push the top die block 59 to move upward, at this time the top die rod 58 passes through the inside of the die groove 510, and the formed die is pushed out upward, so that the surface of the formed product is completely separated from the adhering part in the die groove 510 after being stressed evenly, thereby avoiding deformation of the formed product caused by uneven stress when demolding, and improving demolding efficiency and finished product effect;

[0033] When the upper die 3 moves upward, the bending rod 61 connected with the upper die 3 drives the connected supporting rod 62 to move upward along the supporting groove plate 63, at this time the supporting groove plate 63 is turned upward around the connecting part of the lower die 2, the supporting groove plate 63 in the turned state drives the pressing rod 64 to move, the pressing rod 64 moves to drive the connected sliding push rod 65 to slide along the sliding rod seat 67, thereby the sliding push rod 65 drives the push plate 66 to move, the replacement strip 68 connected with the side surface of the push plate 66 contacts the lower die 2 through the elastic scraper 69, when the elastic scraper 69 contacts the top surface of the lower die 2, the elastic scraper 69 is deformed and bent under pressure, the elastic scraper 69 in the bent state removes and cleans the burrs and scraps remaining on the upper surface of the lower die 2, the removed scraps fall into the die groove 510 and are discharged from the through slot in the die groove 510, thereby preventing the remaining scraps from affecting the sealing effect and forming effect caused by the closing of the lower die 2 and the upper die 3, and when the elastic scraper 69 resets, the elastic scraper 69 deflects around the replacement strip 68 and recovers from deformation, thereby reducing the friction between the reset elastic scraper 69 and the lower die 2, and the elastic scraper 69 can also play a role in transferring the demolded die.

[0034] It should be noted that in this text, relational terms such as first and second and the like are used merely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or equipment.

[0035] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A plastic housing injection mold comprising a base plate (1), characterized in that: The bottom plate (1) is provided with a lower mold (2), the upper surface of the lower mold (2) is provided with an upper mold (3), the inside of the lower mold (2) is provided with a demolding sealing mechanism (5), the rear of the demolding sealing mechanism (5) is provided with a pushing cleaning mechanism (6). The demolding sealing mechanism (5) seals the joint of the lower mold (2) and the upper mold (3).

2. The plastic shell injection mold of claim 1, wherein: The top surface of the lower mold (2) is fixedly connected with a supporting rod (4), the top end of the supporting rod (4) is fixedly connected with a top plate (7), the top surface of the top plate (7) is installed with a hydraulic rod (8), and the top surface of the upper mold (3) is fixedly connected with a lifting seat (9).

3. The plastic shell injection mold of claim 1, wherein: The demolding sealing mechanism (5) comprises an upper pull rod (51), the upper pull rod (51) is provided with two rods, the bottom end of each upper pull rod (51) is slidably connected with a sleeve (52), the bottom end of the sleeve (52) is fixedly connected with a lower pull rod (53), the side surface of the sleeve (52) is fixedly connected with two gas conveying pipes (54), and the end, away from the sleeve (52), of each gas conveying pipe (54) is fixedly connected with a sealing ring (55).

4. The plastic shell injection mold of claim 3, wherein: The bottom end of the lower pull rod (53) is fixedly connected with a connecting block (56), the upper surface of the connecting block (56) is fixedly connected with a lifting plate (57), the top end of the lifting plate (57) is fixedly connected with three top mold rods (58), the top surface of each top mold rod (58) is fixedly connected with a top mold block (59), and the inner wall top end of the lower mold (2) is fixedly connected with a mold groove (510).

5. The plastic shell injection mold of claim 4, wherein: The sealing ring (55) is fixedly connected with the top surface of the lower mold (2), the bottom surface of the upper mold (3) is provided with a ring groove matched with the sealing ring (55), the inside of the sealing ring (55) is a hollow structure, the upper pull rod (51) is fixedly connected with the side surface of the upper mold (3), the lifting plate (57) is slidably connected with the lower mold (2), the mold groove (510) is slidably connected with the top mold block (59), the inside of the sleeve (52) is provided with a reset spring, and the two ends of the reset spring are fixedly connected with the upper pull rod (51) and the lower pull rod (53), respectively, and the inside bottom surface of the mold groove (510) is provided with a through slot.

6. The plastic shell injection mold of claim 1, wherein: The pushing cleaning mechanism (6) comprises a bent rod (61), the bent rod (61) is provided with two rods, each bent rod (61) is fixedly connected with the rear surface of the upper mold (3), the end, away from the upper mold (3), of the bent rod (61) is fixedly connected with a supporting rod (62), the outer side of the supporting rod (62) is slidably connected with a supporting groove plate (63), the inner side of the end, away from the lower mold (2), of the supporting groove plate (63) is slidably connected with a pressure applying rod (64), the two ends of the pressure applying rod (64) are fixedly connected with a sliding push rod (65), the end, away from the pressure applying rod (64), of the sliding push rod (65) is fixedly connected with a push plate (66), the front side of the push plate (66) is slidably connected with a replacement strip (68), the side surface of the replacement strip (68) is hingedly connected with an elastic scraper (69), and the top ends of the lower mold (2) are fixedly connected with sliding rod seats (67).

7. A plastic shell injection mold according to claim 6, wherein: The bracket plate (63) is hingedly connected with the rear side of the lower mold (2), the slide rod seat (67) is slidably connected with the sliding push rod (65), and the elastic scraper (69) is of an elastic structure and has an arc-shaped bottom end cross section.

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