Injection mold for thin-wall part of household appliance shell

Abstract

The utility model provides an injection mold for a thin-wall part of a household appliance shell, which belongs to the technical field of injection molds, aims to solve the problem that the use safety is influenced due to certain potential safety hazards existing in the conventional injection mold, and comprises a fixed mold, a workpiece push-out plate, a sliding mold, a workpiece injection port, a first positioning plate, a positioning pressing plate, a second positioning plate and a guide push rod, the workpiece push-out plate is vertically slidably connected to the middle of the fixed mold. The four guide push rods are evenly distributed and connected to the outer side of the fixed mold through bolts. The sliding mold is in bolted connection with the upper parts of the four guide push rods; the workpiece injection port is formed in the middle of the sliding mold; the first positioning plate is welded on the front side of the fixed mold; the positioning pressing plate is welded on the front side of the sliding mold; the second positioning plate is welded on the rear side of the fixed mold; according to the utility model, the workpieces are automatically pushed out through the sliding push plate, so that the blanking efficiency of the workpieces is improved, the potential safety hazard is reduced, and the use safety of the injection mold is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molds, and more specifically, particularly relates to an injection mold for thin-walled parts of a home appliance shell. Background Art

[0002] When manufacturing thin-walled parts such as home appliance housings, the raw material needs to be injected into the mold from the injection port first, and then compressed air is filled into the mold after the raw material is formed to separate the workpiece from the mold. The movable mold and the fixed mold are then separated, and the workpiece is pushed out by the ejector rod.

[0003] For example, CN217729508U discloses an injection mold for thin-walled plastic parts, comprising a bottom plate, a movable mold plate, a movable mold core, a fixed mold plate, a fixed mold core, an ejection mechanism and a blowing mechanism, wherein the ejection mechanism comprises a push plate and an ejector rod, the top end of the ejector rod passes upward through the movable mold plate and the movable mold core to the surface of the movable mold core, and the blowing mechanism comprises an air inlet, an air inlet channel and a blowing channel, the air inlet channel is respectively connected to the air inlet and the blowing channel, and the end of the blowing channel away from the air inlet channel extends to the surface of the movable mold core; this injection mold is suitable for injection molding of thin-walled plastic parts, after the thin-walled plastic part in the injection molding cavity is cooled, the blowing mechanism is first used to inject compressed air into the injection molding cavity to separate the thin-walled plastic part from the movable mold core and the fixed mold core to avoid adhesion, and then the ejection mechanism is used to eject the thin-walled plastic part, thereby avoiding the phenomenon that the plastic part is deformed and damaged due to uneven force in the direct ejection method of the ejector rod, which is beneficial to improving product quality, improving the yield rate, and extending the service life of thin-walled plastic parts.

[0004] Based on the above, after the workpiece is ejected, the staff is required to reach between the movable mold and the fixed mold to remove the workpiece. Once the power parts of the movable mold are damaged, it is easy to cause injury to the staff, which poses certain safety hazards and affects the safety of the injection mold. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides an injection mold for thin-walled parts of household appliance shells, so as to solve the problem that after the workpiece is ejected, the staff needs to reach their hands between the movable mold and the fixed mold to remove the workpiece. Once the power parts of the movable mold are damaged, it is easy to cause injury to the staff, which poses certain safety hazards and affects the safety of the use of the injection mold.

[0006] The purpose and function of the thin-walled injection mold for the housing of household appliances of the utility model are achieved by the following specific technical means:

[0007] A plastic injection mold for thin-walled parts of a household appliance housing, comprising a fixed mold, a workpiece ejection plate, a sliding mold, a workpiece injection port, a first positioning plate, a positioning pressure plate, a second positioning plate, a cutting structure, a pusher structure and a guide push rod; the workpiece ejection plate is slidably connected to the middle part of the fixed mold up and down; four guide push rods are provided, and the four guide push rods are evenly distributed and bolted to the outside of the fixed mold; the sliding mold is bolted to the upper part of the four guide push rods; the workpiece injection port is opened in the middle part of the sliding mold; the first positioning plate is welded to the front side of the fixed mold; the positioning pressure plate is welded to the front side of the sliding mold; the pusher structure is arranged at the front side of the fixed mold; the second positioning plate is welded to the rear side of the fixed mold; the cutting structure is arranged at the rear side of the fixed mold.

[0008] Furthermore, the cutting structure includes a guide mounting plate and a workpiece cutter; two guide mounting plates are provided, and the two guide mounting plates are respectively slid up and down and connected to the left and right sides of the second positioning plate; the workpiece cutter is bolted to the upper part of the second positioning plate.

[0009] Furthermore, the cutting structure also includes a positioning magnet and a limiting iron sheet; two positioning magnets are provided, and the two positioning magnets are respectively fixedly connected to the left and right sides of the second positioning plate; two limiting iron sheets are provided, and the two limiting iron sheets are respectively fixedly connected to the lower end surfaces of the two guide mounting plates.

[0010] Furthermore, the cutting structure also includes a limiting pressure plate and a second elastic member; the limiting pressure plate is welded to the rear side of the sliding mold; two second elastic members are provided, and the workpiece cutter is elastically connected to the second positioning plate through the two second elastic members.

[0011] Furthermore, the pushing member structure includes a workpiece pushing rod, a sliding pushing plate and a first elastic member; a plurality of the workpiece pushing rods are provided, and the plurality of the workpiece pushing rods are evenly distributed and fixedly connected to the upper end surface of the workpiece pushing plate; a plurality of the first elastic members are provided, and the sliding pushing plate is elastically connected to the first positioning plate through the plurality of the first elastic members.

[0012] Furthermore, the pushing piece structure also includes a traction rope and a guide telescopic rod; two traction ropes are provided, and the two traction ropes are respectively fixedly connected to the left and right sides of the sliding push plate, and the two traction ropes are both fixedly connected to the positioning pressure plate; two guide telescopic rods are provided, and the two guide telescopic rods are respectively fixedly connected to the left and right sides of the sliding push plate, and the two guide telescopic rods are both fixedly connected to the first positioning plate.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The workpiece is automatically pushed out by sliding the push plate, making it more convenient to take the workpiece, improving the workpiece unloading efficiency, and effectively preventing the staff from putting their hands between the movable mold and the fixed mold, preventing the staff from being injured when the power parts are damaged, effectively reducing safety hazards, and improving the safety of injection molds. The positioning of the workpiece cutter by the positioning magnet ensures the stability of the workpiece cutter during cutting. The formed home appliance shell is cut by the workpiece cutter, effectively ensuring the injection molding effect of the home appliance shell and improving the processing quality of the home appliance shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2 It is a schematic diagram of the position of the second positioning plate of the utility model.

[0017] Figure 3 It is a schematic diagram of the position of the first positioning plate of the utility model.

[0018] Figure 4 It is a schematic diagram of the matching relationship between the first positioning plate and the sliding push plate of the utility model.

[0019] Figure 5 It is a schematic diagram of the position of the workpiece ejection plate of the utility model.

[0020] Figure 6 It is a schematic diagram of the positions of the positioning magnet and the second elastic member of the utility model.

[0021] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

[0022] 1. Fixed mold; 2. Workpiece ejection plate; 201. Workpiece ejection rod; 3. Sliding mold; 301. Limiting pressure plate; 4. Workpiece injection port; 5. First positioning plate; 501. Sliding push plate; 502. First elastic member; 503. Traction rope; 504. Guide telescopic rod; 6. Positioning pressure plate; 7. Second positioning plate; 701. Positioning magnet; 702. Guide mounting plate; 703. Limiting iron sheet; 704. Workpiece cutter; 705. Second elastic member; 8. Guide push rod. DETAILED DESCRIPTION

[0023] The implementation of the utility model is further described in detail below in conjunction with the drawings and examples.

[0024] Embodiment 1:

[0025] As attached Figure 1 To Attachment Figure 5As shown:

[0026] The utility model provides an injection mold for thin-walled parts of a home appliance shell, comprising a fixed mold 1, a workpiece ejection plate 2, a sliding mold 3, a workpiece injection port 4, a first positioning plate 5, a positioning pressure plate 6, a push piece structure and a guide push rod 8; the workpiece ejection plate 2 is slidably connected to the middle part of the fixed mold 1 up and down; four guide push rods 8 are provided, and the four guide push rods 8 are evenly distributed and bolted to the outside of the fixed mold 1; the sliding mold 3 is bolted to the upper part of the four guide push rods 8; the workpiece injection port 4 is opened in the middle part of the sliding mold 3; the first positioning plate 5 is welded to the front side of the fixed mold 1; the positioning pressure plate 6 is welded to the front side of the sliding mold 3; and the push piece structure is arranged at the front side of the fixed mold 1.

[0027] Among them, the pushing member structure includes a workpiece pushing rod 201, a sliding pushing plate 501 and a first elastic member 502; a plurality of workpiece pushing rods 201 are provided, and the plurality of workpiece pushing rods 201 are evenly distributed and fixedly connected to the upper end surface of the workpiece pushing plate 2; a plurality of first elastic members 502 are provided, and the sliding pushing plate 501 is elastically connected to the first positioning plate 5 through the plurality of first elastic members 502.

[0028] Among them, the pushing piece structure also includes a traction rope 503 and a guide telescopic rod 504; two traction ropes 503 are provided, and the two traction ropes 503 are respectively fixedly connected to the left and right sides of the sliding push plate 501, and the two traction ropes 503 are both fixedly connected to the positioning pressure plate 6; two guide telescopic rods 504 are provided, and the two guide telescopic rods 504 are respectively fixedly connected to the left and right sides of the sliding push plate 501, and the two guide telescopic rods 504 are both fixedly connected to the first positioning plate 5.

[0029] The specific usage and function of this embodiment are as follows: the raw material is injected into the mold from the workpiece injection port 4. After the home appliance shell is formed, compressed air is filled into the mold. Then the guide push rod 8 pushes the sliding mold 3. The workpiece push-out plate 2 drives the workpiece push-out rod 201 to push the home appliance shell out of the fixed mold 1. When the sliding mold 3 moves, it drives the positioning pressure plate 6 to move, thereby loosening the traction rope 503. When the sliding mold 3 is higher than the sliding push plate 501, the sliding push plate 501 automatically pops out under the action of the first elastic member 502 to push the home appliance shell to move outward. The guide telescopic rod 504 can guide the movement of the sliding push plate 501. After the home appliance shell is removed, the traction rope 503 is pulled to compress the first elastic member 502 to make the sliding push plate 501 close to the first positioning plate 5. When the sliding mold 3 is reset, the traction rope 503 can be released.

[0030] Embodiment 2:

[0031] As attached Figure 2 To Attachment Figure 6 As shown:

[0032] On the basis of the first embodiment, it further includes a second positioning plate 7 and a cutting structure; the second positioning plate 7 is welded to the rear side of the fixed mold 1; and the cutting structure is arranged on the rear side of the fixed mold 1.

[0033] Among them, the cutting structure includes a guide mounting plate 702 and a workpiece cutter 704; there are two guide mounting plates 702, and the two guide mounting plates 702 are respectively connected to the left and right sides of the second positioning plate 7 by sliding up and down; the workpiece cutter 704 is bolted to the upper part of the second positioning plate 7.

[0034] Among them, the cutting structure also includes a positioning magnet 701 and a limiting iron sheet 703; there are two positioning magnets 701, and the two positioning magnets 701 are respectively fixedly connected to the left and right sides of the second positioning plate 7; there are two limiting iron sheets 703, and the two limiting iron sheets 703 are respectively fixedly connected to the lower end surfaces of the two guide mounting plates 702.

[0035] Among them, the cutting structure also includes a limiting pressure plate 301 and a second elastic member 705; the limiting pressure plate 301 is welded to the rear side of the sliding mold 3; two second elastic members 705 are provided, and the workpiece cutter 704 is elastically connected to the second positioning plate 7 through the two second elastic members 705.

[0036] The specific usage and function of this embodiment are as follows: when the sliding mold 3 moves, it will drive the limiting pressure plate 301 to move, thereby causing the workpiece cutter 704 to lose pressure. At this time, the workpiece cutter 704 rises under the action of the second elastic member 705 until the positioning magnet 701 and the limiting iron sheet 703 contact each other. At this time, the positioning magnet 701 will fix the position of the workpiece cutter 704, and the guide mounting plate 702 can guide the movement of the workpiece cutter 704. When the sliding push plate 501 pushes the home appliance housing, the workpiece will gradually approach the workpiece cutter 704 until the workpiece cutter 704 cuts off the small tail left during the injection molding of the home appliance housing. After the sliding mold 3 is reset, the limiting pressure plate 301 will squeeze the workpiece cutter 704 again to make the workpiece cutter 704 close to the second positioning plate 7.

Claims

1. An injection mold for a thin-walled part of a housing of a household appliance, comprising a fixed mold (1), a workpiece ejection plate (2), a sliding mold (3), a workpiece injection port (4), a first positioning plate (5), a positioning pressure plate (6), a second positioning plate (7), a cutting structure, a pusher structure and a guide push rod (8); the workpiece ejection plate (2) is slidably connected to the middle of the fixed mold (1) up and down; a plurality of guide push rods (8) are evenly distributed and bolted to the outer side of the fixed mold (1); the sliding mold (3) is bolted to the upper part of the plurality of guide push rods (8); the workpiece injection port (4) is opened in the middle of the sliding mold (3); and the characteristics are as follows: The first positioning plate (5) is welded to the front side of the fixed mold (1); the positioning pressure plate (6) is welded to the front side of the sliding mold (3); the pushing piece structure is arranged on the front side of the fixed mold (1); the second positioning plate (7) is welded to the rear side of the fixed mold (1); and the cutting structure is arranged on the rear side of the fixed mold (1).

2. An injection mold for thin-walled parts of home appliance housings as claimed in claim 1, characterized in that: The push piece structure comprises a workpiece pushing rod (201), a sliding push plate (501) and a first elastic member (502); a plurality of the workpiece pushing rods (201) are evenly distributed and fixedly connected to the upper end surface of the workpiece pushing plate (2); and the sliding push plate (501) is elastically connected to the first positioning plate (5) via a plurality of the first elastic members (502).

3. An injection mold for thin-walled parts of home appliance housings as claimed in claim 2, characterized in that: The push piece structure also includes a traction rope (503) and a guide telescopic rod (504); the left and right sides of the sliding push plate (501) are respectively fixedly connected with a traction rope (503), and the traction rope (503) is fixedly connected to the positioning pressure plate (6); the left and right sides of the sliding push plate (501) are respectively fixedly connected with a guide telescopic rod (504), and the guide telescopic rod (504) is fixedly connected to the first positioning plate (5).

4. The thin-walled part injection mold for home appliance housing according to claim 1, characterized in that: The cutting structure comprises a guide mounting plate (702) and a workpiece cutter (704); the left and right sides of the second positioning plate (7) are respectively connected to the guide mounting plate (702) in an upward and downward sliding manner; and the workpiece cutter (704) is bolted to the upper part of the second positioning plate (7).

5. An injection mold for thin-walled parts of home appliance housings as claimed in claim 4, characterized in that: The cutting structure further comprises a positioning magnet (701) and a limiting iron sheet (703); one positioning magnet (701) is fixedly connected to the left and right sides of the second positioning plate (7); and one limiting iron sheet (703) is fixedly connected to the lower end surface of each guide mounting plate (702).

6. An injection mold for thin-walled parts of home appliance housings as claimed in claim 5, characterized in that: The cutting structure further comprises a limiting pressure plate (301) and a second elastic member (705); the limiting pressure plate (301) is welded to the rear side of the sliding mould (3); and the workpiece cutter (704) is elastically connected to the second positioning plate (7) via a plurality of the second elastic members (705).

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