CN210148629U - A kind of injection molding die for processing bicycle bell seat - Google Patents

Abstract

The utility model discloses an injection molding mold for processing a bicycle bell seat. The bell seat comprises an arc-shaped first clamping part and an arc-shaped second clamping part which cooperate with each other; the mold comprises an upper mold component and a lower mold assembly. The mold assembly, the two arc-shaped cavities formed after the upper mold core and the lower mold core are matched for accommodating the first clamping part and the second clamping part are respectively connected with the first clamping part and the second clamping part. The shapes of the joints are matched; the lower end of the glue injection port is connected with a runner system for supplying mold material to the arc-shaped cavity, and a gate is provided at the connection between the runner system and the arc-shaped cavity, and the The outlet of the gate is arranged on the inner arc surface of the arc cavity. In the utility model, by improving the position of the gate outlet, the gate outlet is arranged on the inner arc surface of the arc cavity, the surfaces of the first clamping part and the second clamping part after forming are smooth, and the product The apparent quality is better.

Description

A kind of injection molding die for processing bicycle bell seat

technical field

The utility model belongs to the field of molds, in particular to a mold for processing a bicycle bell seat.

Background technique

The connection between the bicycle bell and the bicycle handle is generally connected through the bicycle bell seat, and the bicycle bell seat is generally a buckle component. The processing method of the bicycle bell seat in the prior art is often processed by machine tools, which requires many complicated and tedious processing procedures. And the processing cycle of the product is long, and the processing cost is relatively high.

Utility model content

The technical problem to be solved by the utility model is to overcome the deficiencies and defects mentioned in the above background technology, and to provide an injection molding die for processing a bicycle bell seat. Using the mold to produce a bicycle bell seat can greatly reduce the production and processing of the bicycle bell seat. It has the advantages of relatively low processing cost, short processing cycle and good product apparent quality. In order to solve the above-mentioned technical problems, the technical scheme proposed by the present utility model is:

An injection molding die for processing a bicycle bell seat, the bell seat comprises an arc-shaped first clamping part and an arc-shaped second clamping part that cooperate with each other, and the two ends of the first clamping part are provided with clamping holes, so the The two ends of the second clamping part are provided with buckles matched with the clamping holes; the forming mold includes an upper mold assembly and a lower mold assembly, and the upper mold assembly sequentially includes an upper template, a flow channel from bottom to top The stripping plate and the upper mold fixing plate, the center of the upper mold fixing plate is provided with a glue injection port, and the glue injection port is fixed with the upper mold fixing plate through the positioning ring; A template, a pair of oppositely arranged backing plates and a lower die fixing plate located on both sides of the lower template, an ejector device is provided between the lower die fixing plate and a pair of oppositely arranged backing plates, and an ejector is arranged in the upper template. There is an upper mold core with a cavity, and a lower mold core with a cavity is arranged in the lower mold plate. The two arc-shaped cavities of the connecting part are respectively matched with the shapes of the first clamping part and the second clamping part; the lower end of the glue injection port is connected with a flow channel system for supplying mold material to the arc-shaped cavity, so A gate is provided where the flow channel system communicates with the arc-shaped cavity, and the outlet of the gate is set on the inner arc surface of the arc-shaped cavity.

In the above injection molding mold, preferably, the flow channel system includes a main flow channel and a plurality of branch flow channels, the main flow channel is connected with the injection port, one end of the branch flow channel is connected with the main flow channel, and the other end is connected with the gate inlet. Connected. Multiple runners are used to send the mold material in the main runner to each independent arc-shaped cavity. More preferably, two shunt passages are connected to the second clamping part, and one shunt passage is connected to the first clamping part.

In the above injection molding mold, preferably, the arc-shaped cavity for accommodating the second clamping part is horizontally arranged between the upper mold core and the lower mold core, and the arc-shaped cavity for accommodating the first clamping part is vertical It is installed between the upper mold core and the lower mold core. The above setting method is to keep the appearance of the bell seat without the parting line damaging the appearance.

In the above injection molding mold, preferably, the inner arc surface and the outer arc surface of the arc-shaped cavity for accommodating the second clamping portion are provided with a plurality of cold material wells, and the ejection device is connected to the cold material well. In the utility model, the cold material well is connected with the ejector pin of the ejector. The existence of the cold material well can prevent the cold material from entering the arc cavity and affect the quality of the parts, and make the mold material fill the arc cavity smoothly.

In the above-mentioned injection molding mold, preferably, a through hole is provided on the second clamping portion, and auxiliary opening parts for opening the through hole are further provided on the side surfaces of the upper mold core and the lower mold core. The existence of the auxiliary opening part facilitates the opening of the lateral side of the second clamping part placed horizontally.

In the above injection molding mold, preferably, the upper mold assembly is provided with a guide post, and the lower mold assembly is provided with a guide post matched with the guide post to ensure that the upper mold assembly and the lower mold assembly are matched. Column slot.

In the above injection molding mold, preferably, the ejection device includes an ejector pin push plate, an ejector pin panel and an ejector pin, the ejector pin ejector plate is arranged on the lower mold fixing plate, the ejector pin panel is arranged on the ejector pin ejector plate, the ejector pin ejector The ejector pin is arranged on the ejector pin panel, and the ejector pin movably passes through the lower mold fixing plate and the lower mold core and extends into the arc-shaped cavity.

Compared with the prior art, the advantages of the present utility model are:

1. In this utility model, by improving the position of the gate outlet, the gate outlet is located on the inner arc surface of the arc-shaped cavity, and the glue head interface after injection is located at the first clamping part and the second clamping part. On the back of the joint part, the surfaces of the formed first clip joint part and the second clip joint part are smooth, and the apparent quality of the product is better.

2. The molding die in the utility model has the advantages of simple structure, reasonable arrangement of the runner system, and convenient use.

3. In the utility model, the bicycle bell seat is obtained by processing the molding die, the processing cycle is short, the processing cost is low, and mass production can be realized.

Description of drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a molding die in an embodiment.

FIG. 2 is a front view of the molding die in the embodiment.

FIG. 3 is a sectional view of the plane A-A in FIG. 2 .

FIG. 4 is a schematic structural diagram after some components are hidden in FIG. 1 (the hidden components in the figure mainly include an upper die plate, an upper die core, a runner stripper plate and an upper die fixing plate).

Fig. 5 is a schematic structural diagram after some components are hidden in Fig. 1 (the hidden components in the figure mainly include an upper die plate, an upper die core, a runner stripper plate, an upper die fixing plate, a lower die core and a lower die plate).

FIG. 6 is a schematic diagram of the arrangement structure of the runner system in the forming mold.

illustration:

1. The first clamping part; 2. The second clamping part; 3. The upper template; 4. The runner stripping plate; 5. The upper mold fixing plate; 6. The glue injection port; Template; 10. Backing plate; 11. Lower mold fixing plate; 12. Upper mold core; 13. Lower mold core; Auxiliary opening parts; 19, guide post; 20, guide post groove; 21, ejector pin push plate; 22, ejector pin panel; 23, ejector pin.

Detailed ways

In order to facilitate understanding of the present utility model, the present utility model will be described more comprehensively and in detail below with reference to the accompanying drawings and preferred embodiments of the specification, but the protection scope of the present utility model is not limited to the following specific embodiments.

Unless otherwise defined, all technical terms used hereinafter have the same meaning as commonly understood by those skilled in the art. The technical terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit the protection scope of the present invention.

Example:

As shown in Figures 1-6, in the injection molding die for processing a bicycle bell seat in this embodiment, the bell seat includes an arc-shaped first engaging portion 1 and an arc-shaped second engaging portion 2 that cooperate with each other. The first engaging portion 1. There are clamping holes at both ends, and the two ends of the second clamping portion 2 are provided with buckles that match the clamping holes; the forming die includes an upper die assembly and a lower die assembly, and the upper die assembly includes an upper Template 3, runner stripping plate 4 and upper die fixing plate 5, the upper die fixing plate 5 is provided with a glue injection port 6 in the center, and the glue injection opening 6 is fixed with the upper die fixing plate 5 through the positioning ring 7; the lower die assembly is composed of From top to bottom, it includes a lower die plate 8, a pair of oppositely arranged backing plates 10 and a lower die fixing plate 11 on both sides of the lower die plate 8, and a pair of oppositely arranged backing plates 10 are provided on the lower die fixing plate 11. The ejecting device, the upper die plate 3 is provided with an upper die core 12 with a cavity, the lower die plate 8 is provided with a lower die core 13 with a cavity, and the upper die core 12 is matched with the lower die core 13. The two arc-shaped cavities accommodating the first clamping part 1 and the second clamping part 2 are respectively matched with the shapes of the first clamping part 1 and the second clamping part 2; The arc-shaped cavity provides a runner system for the mold material. A gate 14 is provided at the connection between the runner system and the arc-shaped cavity, and the outlet of the gate 14 is set on the inner arc surface of the arc-shaped cavity (as shown in Figure 6). shown). The outlet of the gate 14 is located on the inner arc surface of the arc-shaped cavity, and the plastic head interface after injection is located on the back of the first clamping part 1 and the second clamping part 2. The molded first clamping part 1 The surface of the second clamping part 2 is smooth, and the apparent quality of the product is better.

In this embodiment, the flow channel system includes a main flow channel 15 and three branch flow channels 16 . The main flow channel 15 communicates with the injection port 6 . Wherein, two shunt channels 16 are connected to the arc-shaped cavity for accommodating the second clamping part 2 , and one shunt channel 16 is connected to the arc-shaped cavity for accommodating the first clamping part 1 .

In this embodiment, the arc-shaped cavity for accommodating the second clamping part 2 is horizontally arranged between the upper mold core 12 and the lower mold core 13 , and the arc-shaped cavity for accommodating the first clamping part 1 is vertical It is arranged between the upper mold core 12 and the lower mold core 13 .

In this embodiment, the inner arc surface and the outer arc surface of the arc cavity for accommodating the second clamping portion 2 are provided with a plurality of cold material wells 17 , and the ejector pins 23 of the ejector are connected to the cold material wells 17 .

In this embodiment, the second clamping portion 2 is provided with a through hole, and the side surfaces of the upper mold core 12 and the lower mold core 13 are further provided with auxiliary opening members 18 for opening the through holes.

In this embodiment, the upper mold assembly is provided with a guide post 19, and the lower mold assembly is provided with a guide post groove 20 matching with the guide post 19 to ensure that the upper mold assembly and the lower mold assembly are matched.

In this embodiment, the ejection device includes an ejector pin push plate 21, an ejector pin panel 22 and an ejector pin 23. The ejector pin push plate 21 is provided on the lower die fixing plate 11, the ejector pin panel 22 is provided on the ejector pin push plate 21, and the ejector pin 23 is provided on the ejector pin On the panel 22, the ejector pins 23 can move through the lower mold fixing plate 11 and the lower mold core 13 and extend into the arc-shaped cavity.

In this embodiment, after the mold material passes through the runner system from the injection port 6, it enters the arc-shaped cavity through the gate 14. When the arc-shaped cavity is completely filled, the pressure is automatically maintained to make the product dense, and then the mold is separated. Through the ejection device, the product is separated from the molding die, and then the next injection molding is performed, and the cycle works in sequence, which can realize mass production and high production efficiency.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. For those skilled in the art, the present utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (7)

1. An injection molding mold for processing a bicycle bell seat is disclosed, wherein the bell seat comprises an arc-shaped first clamping part (1) and an arc-shaped second clamping part (2) which are matched with each other, clamping holes are formed in two ends of the first clamping part (1), and buckles matched with the clamping holes are formed in two ends of the second clamping part (2); the forming die comprises an upper die assembly and a lower die assembly, the upper die assembly sequentially comprises an upper die plate (3), a runner stripper plate (4) and an upper die fixing plate (5) from bottom to top, a glue injection port (6) is formed in the center of the upper die fixing plate (5), and the glue injection port (6) is fixed with the upper die fixing plate (5) through a positioning ring (7); the lower die assembly sequentially comprises a lower die plate (8), a pair of oppositely arranged base plates (10) and a lower die fixing plate (11) from top to bottom, wherein the base plates (10) and the lower die fixing plate (11) are positioned on two sides of the lower die plate (8), an ejection device is arranged between the pair of oppositely arranged base plates (10) on the lower die fixing plate (11), the lower die assembly is characterized in that an upper die core (12) with a cavity is arranged in the upper die plate (3), a lower die core (13) with the cavity is arranged in the lower die plate (8), and two arc-shaped cavities which are formed after the upper die core (12) is matched with the lower die core (13) and are used for accommodating a first clamping portion (1) and a second clamping portion (2) are respectively matched with the shapes of the first clamping portion (; the lower end of the glue injection port (6) is connected with a runner system used for providing a mold material for the arc-shaped cavity, a sprue (14) is arranged at the communication position of the runner system and the arc-shaped cavity, and an inner arc surface of the arc-shaped cavity is arranged at the outlet of the sprue (14).

2. The injection mold for processing a bicycle bell seat as claimed in claim 1, wherein the runner system comprises a main runner (15) and a plurality of sub-runners (16), the main runner (15) is communicated with the glue injection port (6), one end of the sub-runner (16) is communicated with the main runner (15), and the other end is communicated with the inlet gate (14).

3. The injection mold for processing a bicycle bell seat as claimed in claim 1 or 2, wherein the arc-shaped cavity for accommodating the second clamping portion (2) is horizontally provided between the upper mold core (12) and the lower mold core (13), and the arc-shaped cavity for accommodating the first clamping portion (1) is vertically provided between the upper mold core (12) and the lower mold core (13).

4. The injection mold for machining a bicycle bell seat as claimed in claim 3, wherein a plurality of cold charge wells (17) are provided on the inner and outer arc surfaces of the arc-shaped cavity for accommodating the second clamping portion (2), and the ejector is connected to the cold charge wells (17).

5. The injection mold for machining a bicycle bell seat as claimed in claim 3, wherein the second engaging portion (2) is provided with a through hole, and the side surfaces of the upper mold core (12) and the lower mold core (13) are further provided with an auxiliary hole-opening member (18) for opening the through hole.

6. The injection mold for machining a bicycle bell seat as claimed in claim 1 or 2, wherein the upper mold assembly is provided with guide posts (19), and the lower mold assembly is provided with guide post slots (20) matching with the guide posts (19) to ensure the upper mold assembly and the lower mold assembly to match each other.

7. The injection mold for machining the bicycle bell seat as claimed in claim 1 or 2, wherein the ejector device comprises a thimble push plate (21), a thimble panel (22) and a thimble (23), the thimble push plate (21) is disposed on the lower mold fixing plate (11), the thimble panel (22) is disposed on the thimble push plate (21), the thimble (23) is disposed on the thimble panel (22), and the thimble (23) movably passes through the lower mold fixing plate (11) and the lower mold core (13) and extends into the arc-shaped cavity.

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