Plastic bottom shell forming mold

Abstract

The utility model discloses a plastic bottom shell forming die which comprises a lower die mechanism and an upper die mechanism arranged above the lower die mechanism, the lower die mechanism comprises a lower die, the middle of the upper end face of the lower die is concaved inwards to form a forming groove, and a positioning groove is formed in one side of the upper end face of the lower die. Two hydraulic telescopic rods connected with the upper die mechanism are symmetrically arranged on the upper end face of the lower die, a cutting mechanism is arranged on the upper end face of the lower die and located on the periphery of the forming groove, the upper die mechanism comprises an upper die, a forming column right facing the forming groove is arranged on one side of the bottom end of the upper die, and a positioning rod right facing the positioning groove is arranged on the other side of the bottom end of the upper die. According to the plastic bottom shell trimming device, burrs generated when a plastic bottom shell is formed can be trimmed, the subsequent processing procedures of the plastic bottom shell are reduced, and the production cost of the plastic bottom shell is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to plastic bottom shell forming technical field, concretely is a plastic bottom shell forming die. BACKGROUND

[0002] As the important component part of many electronic products, electric appliances and the like, the performance of the plastic bottom shell forming die directly influences the quality, production efficiency and cost of the product. With the continuous improvement of the quality requirement of the plastic bottom shell product in the market and the gradual expansion of the production scale, the original forming die exposes some problems in the actual application, such as forming defects, long production cycle, die easy to damage and the like, so it has important practical significance to improve it.

[0003] In the production of the plastic bottom shell, the plastic melt is usually injected into the die, and then it is formed after waiting for cooling, but the flash is generated at the edge of the plastic bottom shell when the existing forming die is used for forming the plastic bottom shell, and the flash is difficult to clean, which not only influences the appearance quality of the product, but also increases the workload and cost of the post-processing process. UTILITY MODEL CONTENT

[0004] The utility model discloses a plastic bottom shell forming die, has the advantages of automatic flash cleaning, solves the problem that the flash generated when the current plastic bottom shell is formed is inconvenient to handle.

[0005] In order to achieve the above object, the utility model provides the following technical scheme: a plastic bottom shell forming die, including lower die mechanism and the upper die mechanism of being placed in the upper die mechanism of lower die mechanism, the lower die mechanism includes lower die, the upper end surface middle part recess of lower die is formed with the forming groove, and the upper end surface one side is provided with the positioning groove, and the upper end surface symmetry of lower die is provided with two hydraulic telescopic rods of connecting upper die mechanism, the upper end surface of lower die is provided with cutting mechanism in the periphery of forming groove, the upper die mechanism includes upper die, the bottom end one side of upper die is provided with the forming column of being opposite to the forming groove, and the bottom end opposite side is provided with the positioning rod of being opposite to the positioning groove, and the lower end surface of upper die is provided with sealing mechanism in the periphery of forming column and opposite cutting mechanism.

[0006] Preferably, the cutting mechanism includes a cutting knife, two drive mechanisms are symmetrically installed at the bottom end of the cutting knife, one of the two drive mechanisms close to the outer side of the lower die is connected with a drive rod, and one end of the drive rod extends out of the side surface of the lower die.

[0007] Preferably, the cutting knife is connected with a driven rod on one side, first gears are arranged at both ends of the driven rod, chain plates are engaged with the outer edge surfaces of the two first gears, second gears are engaged with the other ends of the chain plates, and the second gears are fixedly connected with the drive mechanisms.

[0008] Preferably, the upper end surface of the cutting knife is provided with a knife edge, the top end of the knife edge is provided with an arc surface away from the forming groove, and the side of the knife edge facing the forming groove is provided with a vertical cutting surface.

[0009] Preferably, each of the driving mechanisms comprises a third gear fixedly connected with the driving rod, and a fourth gear engaged with one side of the third gear, and the opposite sides of the third gear and the fourth gear are both engaged with toothed plates, and the top ends of the two toothed plates are both fixedly connected with the lower end surface of the cutting knife.

[0010] Preferably, the sealing mechanism comprises a sealing plate embedded in the upper mold and slidingly connected with the upper mold, and the lower end surface of the sealing plate is flush with the lower end surface of the upper mold, and the upper end surface is provided with a plurality of springs.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] 1、The utility model discloses a cutting knife, a driving rod, a driven rod, a first gear, a chain plate, a second gear, a third gear, a fourth gear and a toothed plate are arranged, the second gear is driven to rotate by rotating the driving rod, the driven rod is driven to rotate by the second gear engaging the chain plate and the first gear, and the two third gears are driven to rotate, the toothed plate is driven to ascend and descend synchronously by the third gear engaging the fourth gear, the cutting knife is ejected from the upper end surface of the lower mold, the burrs generated when the plastic bottom shell is formed are trimmed, the subsequent processing procedure of the plastic bottom shell is reduced, and the production cost of the plastic bottom shell is reduced.

[0013] 2、The utility model discloses a sealing plate and a spring are arranged, the sealing plate is embedded in the upper mold, and the bottom end of the sealing plate is flush with the lower end surface of the upper mold, the upper mold can be sealed when the plastic bottom shell is formed, the plastic melt can not enter the groove in which the sealing plate is embedded, the sealing plate is embedded in the upper mold by extruding the spring when the burrs of the plastic bottom shell are cut, the sealing plate can be matched when the burrs of the plastic bottom shell are cut, and the upper mold can be sealed when the plastic bottom shell is formed. ACCURATE DRAWINGS

[0014] Figure 1 It is a front view structural schematic diagram of the utility model;

[0015] Figure 2 It is a bottom view structural schematic diagram of the utility model;

[0016] Figure 3 It is a cutting mechanism structural schematic diagram of the utility model; Figure 1

[0017] Figure 4 It is a sealing mechanism structural schematic diagram of the utility model; Figure 2

[0018] ​​Figure 5 The utility model discloses Figure 1 The vertical section structure schematic diagram of cutting mechanism in it shows;

[0019] Figure 6 The utility model discloses Figure 5 The enlarged schematic diagram of structure A in it shows.

[0020] The reference signs and names in the drawing are as follows:

[0021] 1, lower mould mechanism;11, lower mould;12, forming groove;13, hydraulic telescopic rod;14, positioning groove;2, upper mould mechanism;21, upper mould;22, forming column;23, positioning rod;3, cutting mechanism;31, cutting knife;32, drive rod;33, driven rod;34, first gear;35, chain plate;36, second gear;37, knife edge;4, driving mechanism;41, third gear;42, fourth gear;43, toothed plate;5, sealing mechanism;51, sealing plate;52, spring. Specific implementation

[0022] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0023] In the description of the embodiments of the utility model, it is understood that the orientation or position relationship indicated by the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship shown in the drawings, and is only for the convenience of describing the embodiments of the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0024] In the embodiments of the utility model, unless there are explicit provisions and limitations, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the embodiments of the utility model can be understood according to the specific circumstances.

[0025] Please refer to Figures 1 to 6 The utility model provides an embodiment: a plastic bottom shell forming die, including lower die mechanism 1 and the upper die mechanism 2 of being placed in lower die mechanism 1 top, lower die mechanism 1 includes lower die 11, and the upper end surface middle part recess of lower die 11 forms the forming groove 12, and the upper end surface one side of lower die 11 is provided with the positioning groove 14, and the upper end surface of lower die 11 is provided with two hydraulic telescopic rods 13 of connecting upper die mechanism 2, and the upper end surface of lower die 11 is provided with cutting mechanism 3 in the periphery of forming groove 12, upper die mechanism 2 includes upper die 21, and the bottom end one side of upper die 21 is provided with the forming column 22 of facing forming groove 12, and the bottom end other side of upper die 21 is provided with the positioning rod 23 of facing positioning groove 14, and the lower end surface of upper die 21 is provided with sealing mechanism 5 of facing cutting mechanism 3 in the periphery of forming column 22, cutting mechanism 3 includes cutting knife 31, and two drive mechanisms 4 of symmetric installation are connected with driving rod 32 in the one drive mechanism 4 of two drive mechanisms 4 near the outside of lower die 11, and driving rod 32 one end extends out lower die 11 side, and cutting knife 31 one side is connected with driven rod 33, and the both ends of driven rod 33 are provided with first gear 34, and the outer edge surface of two first gears 34 is engaged with chain plate 35, and the other end of chain plate 35 is engaged with second gear 36, and second gear 36 is fixedly connected with drive mechanism 4, and the upper end surface of cutting knife 31 is provided with knife edge 37, and the top end of knife edge 37 is provided with arc surface away from forming groove 12, and the side of knife edge 37 towards forming groove 12 is provided with vertical tangent plane, and each drive mechanism 4 includes third gear 41, and third gear 41 is fixedly connected with driving rod 32, and the one side of third gear 41 is engaged with fourth gear 42, and the one side of third gear 41 and fourth gear 42 is engaged with toothed plate 43, and the top end of two toothed plates 43 is fixedly connected with the lower end surface of cutting knife 31, and sealing mechanism 5 includes sealing plate 51, and sealing plate 51 is embedded in the inside of upper die 21 and is slidably connected with upper die 21, and the lower end surface of sealing plate 51 is flush with the lower end surface of upper die 21, and the upper end surface is provided with a plurality of springs 52.

[0026] Working principle: in the utility model, the plastic melt is injected into the forming groove 12, when the hydraulic telescopic rod 13 works, the upper die 21 is lowered, the forming column 22 and the positioning rod 23 are respectively embedded into the forming groove 12 and the positioning groove 14, the plastic melt is extruded to form the plastic bottom shell, after cooling and forming, the rotary drive rod 32 drives the second gear 36 to rotate, the second gear 36 meshes with the chain plate 35 and the first gear 34 to drive the driven rod 33 to rotate, and then drives the two third gears 41 to rotate, the third gear 41 meshes with the fourth gear 42 to drive the toothed plate 43 to synchronously lift, the cutting knife 31 is ejected from the upper end surface of the lower die 11, and the burr generated during the forming of the plastic bottom shell is trimmed.

[0027] It is obvious for those skilled in the art that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, the scope of the utility model is defined by the appended claims instead of the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims should be included in the utility model. Any reference signs in the claims should not be regarded as limiting the involved claims.

Claims

1. A plastic bottom shell forming die comprising a lower die mechanism (1) and an upper die mechanism (2) disposed above the lower die mechanism (1), characterized in that: The lower die mechanism (1) includes a lower die (11), a forming groove (12) is recessed in the middle of the upper end face of the lower die (11), a positioning groove (14) is formed on one side of the upper end face, and two hydraulic telescopic rods (13) connected to the upper die mechanism (2) are symmetrically arranged on the upper end face of the lower die (11), a cutting mechanism (3) is arranged on the upper end face of the lower die (11) outside the forming groove (12), the upper die mechanism (2) includes an upper die (21), a forming column (22) is arranged on one side of the bottom end of the upper die (21) and faces the forming groove (12), a positioning rod (23) is arranged on the other side of the bottom end of the upper die (21) and faces the positioning groove (14), and a sealing mechanism (5) is arranged on the lower end face of the upper die (21) outside the forming column (22) and faces the cutting mechanism (3).

2. The plastic bottom shell forming mold according to claim 1, wherein: The cutting mechanism (3) includes a cutting knife (31), two driving mechanisms (4) are symmetrically mounted on the bottom end of the cutting knife (31), one of the two driving mechanisms (4) is connected with a driving rod (32) near the outside of the lower die (11), and one end of the driving rod (32) extends out of the side of the lower die (11).

3. The plastic bottom shell forming mold of claim 2, wherein: One side of the cutting knife (31) is connected with a driven rod (33), first gears (34) are arranged at both ends of the driven rod (33), chain plates (35) are engaged with the outer edges of the two first gears (34), a second gear (36) is engaged with the other end of the chain plate (35), and the second gear (36) is fixedly connected with the driving mechanism (4).

4. The plastic bottom shell forming mold of claim 2, wherein: A knife edge (37) is arranged on the upper end face of the cutting knife (31), an arc surface away from the forming groove (12) is arranged at the top end of the knife edge (37), and a vertical cutting surface is arranged on the side of the knife edge (37) facing the forming groove (12).

5. The plastic bottom shell forming mold of claim 2, wherein: Each driving mechanism (4) includes a third gear (41) fixedly connected with the driving rod (32), a fourth gear (42) engaged with one side of the third gear (41), and toothed plates (43) engaged with the sides of the third gear (41) and the fourth gear (42) opposite to each other, and the top ends of the two toothed plates (43) are fixedly connected with the lower end face of the cutting knife (31).

6. The plastic bottom shell forming mold of claim 1, wherein: The sealing mechanism (5) includes a sealing plate (51) embedded in the inside of the upper die (21) and in sliding connection with the upper die (21), the lower end face of the sealing plate (51) is flush with the lower end face of the upper die (21), and a plurality of springs (52) are arranged on the upper end face of the sealing plate (51).

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