A hand-held sprayer housing injection mold

Abstract

The utility model discloses a kind of handheld sprayer shell injection mould, it is related to injection mould technical field, including fixed mould and movable mould, several groups of mould grooves are opened between the fixed mould and movable mould, further include: stripping assembly, it is set on fixed mould, wherein, stripping assembly includes several groups of first notch, the first notch is set in the inside of fixed mould, several groups of second notch are opened in the inside of fixed mould, and second notch is located the just below of first notch, piston piece is sleeved in the inside of second notch, the top of piston piece is fixed with movable rod, reset spring is sleeved on the outer surface of movable rod, the middle part of fixed mould is communicated with gas pipe, the top of gas pipe is communicated with shunt pipe, the top of fixed mould is fixed with fixed cylinder, piston rod is sleeved in the inside of fixed cylinder, second notch and fixed cylinder are connected by communicating with circular pipe, the mode of stripping by air pressure, prevent to cause indentation to sprayer shell.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically an injection mold for a handheld sprayer shell. Background Technology

[0002] Chinese patent publication number "CN219789116U" discloses an automatic demolding injection mold comprising an upper mold plate and a lower mold plate, forming a molding cavity between the upper and lower mold plates. An upper push plate is provided above the upper mold plate, and a first spring is provided between the upper push plate and the upper mold plate. A positioning post is provided above the upper push plate, and an upper ejector pin is provided below the upper push plate. A lower push plate is provided below the lower mold plate, and a second spring is provided between the lower push plate and the base. A lower ejector pin is provided on the lower push plate. The upper and lower ejector pins are arranged opposite to each other, with the upper ejector pin corresponding to the upper cavity and the lower ejector pin corresponding to the lower cavity. The upper and lower cavities form the molding cavity. The base is provided with a driving assembly, which is connected to the upper mold plate.

[0003] The aforementioned patent describes a method for demolding products that primarily uses a pusher to compress the product and control the separation of the product from the mold. While this method can promote product demolding, when the product and mold are tightly fitted together, the pusher can easily cause indentations on the product's surface during the compression process, thus affecting the quality of the molded product. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an injection mold for the shell of a handheld sprayer.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a handheld sprayer shell injection mold, comprising a fixed mold and a moving mold, wherein a plurality of mold grooves are provided between the fixed mold and the moving mold, and further comprising: A demolding assembly, which is mounted on the fixed mold, is used to demold the sprayer housing; The demolding assembly includes several sets of first slots, which are located inside the fixed mold. Several sets of second slots are opened inside the fixed mold, and the second slots are located directly below the first slots. A piston is fitted inside the second slot, and a movable rod is fixed to the top of the piston. A return spring is fitted on the outer surface of the movable rod. An air supply pipe is connected to the middle of the fixed mold, and a diverter pipe is connected to the top of the air supply pipe. A fixed cylinder is fixed to the top of the fixed mold, and a piston rod is fitted inside the fixed cylinder. The second slots and the fixed cylinder are connected by a circular tube.

[0006] As described above, the top end of the movable rod passes through the second slot and is slidably connected to the first slot, and the top end of the movable rod seals the first slot.

[0007] As described above, the first slot is connected to the mold slot, and the diversion pipe is connected to the first slot.

[0008] As described above, the reset spring is elastically supported between the second slot and the piston, and the interior of the second slot is filled with hydraulic oil.

[0009] As described above, the top end of the piston rod passes through the fixed cylinder, and the bottom of the moving mold is in compressive contact with the piston rod.

[0010] As mentioned above, the bottom end of the gas pipeline is connected to an external gas pump.

[0011] Compared with existing technologies, this injection mold for a handheld sprayer housing has the following advantages: 1. The elastic force of this utility model, after the fixed mold and the moving mold separate, will drive the piston to compress the hydraulic oil inside the second groove, so that the hydraulic oil is transported through the round pipe to the inside of the fixed cylinder until the top of the movable rod moves to the bottom of the diversion pipe. At this time, the diversion pipe will be directly connected to the mold groove. Therefore, after the air is input into the diversion pipe through the air supply pipe, the air pressure will be used to demold the mold inside the mold groove. The demolding method of using air pressure prevents the sprayer shell from being indented.

[0012] Second, through the cooperation between the moving mold and the piston rod, when the fixed mold and the moving mold are closed, the bottom of the moving mold will drive the piston rod to move downward along the inner wall of the fixed cylinder, thereby squeezing the hydraulic oil inside into the second slot, causing it to lift the piston component, thereby driving the movable rod to seal the connection between the mold slot and the first slot, thus avoiding affecting the molding of the sprayer shell.

[0013] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional view of the side of the present invention; Figure 3 This utility model Figure 2 Enlarged structural diagram at point A; Figure 4 This is a schematic diagram of the structure of the sprayer shell after molding.

[0015] In the diagram: 1. Fixed mold; 2. Moving mold; 3. Mold groove; 4. First groove; 5. Second groove; 6. Movable rod; 7. Piston; 8. Return spring; 9. Gas supply pipe; 10. Diverter pipe; 11. Fixed cylinder; 12. Piston rod; 13. Round pipe. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] like Figure 1-4 As shown, this utility model provides an injection mold for a handheld sprayer casing, including a fixed mold 1 and a moving mold 2, with a plurality of mold grooves 3 formed between the fixed mold 1 and the moving mold 2, and also includes: A demolding assembly, which is disposed on the fixed mold 1, is used to demold the sprayer housing; The demolding assembly includes several sets of first slots 4, which are located inside the fixed mold 1. Several sets of second slots 5 are opened inside the fixed mold 1, and the second slots 5 are located directly below the first slots 4. A piston 7 is fitted inside the second slot 5. A movable rod 6 is fixed to the top of the piston 7. A return spring 8 is fitted on the outer surface of the movable rod 6. An air supply pipe 9 is connected to the middle of the fixed mold 1. A diverter pipe 10 is connected to the top of the air supply pipe 9. The bottom of the air supply pipe 9 is connected to an external air pump. A fixed cylinder 11 is fixed to the top of the fixed mold 1. A piston rod 12 is fitted inside the fixed cylinder 11. The second slots 5 and the fixed cylinder 11 are connected by a round pipe 13.

[0018] After the fixed mold 1 and the moving mold 2 are separated, the moving mold 2 will release the pressure on the piston rod 12. At this time, the elastic force of 18 will drive the piston 7 to compress the hydraulic oil inside the second slot 5, so that the hydraulic oil will be transported to the inside of the fixed cylinder 11 through the round pipe 13, causing the top of the movable rod 6 to move to the position below the diversion pipe 10. At this time, the diversion pipe 10 will be directly connected to the mold slot 3. Therefore, after the air is input into the diversion pipe 10 through the air supply pipe 9, the air pressure will be used to demold the mold inside the mold slot 3.

[0019] like Figure 3 As shown, the top of the movable rod 6 passes through the second slot 5 and is slidably connected to the first slot 4, and the top of the movable rod 6 seals the first slot 4.

[0020] The connection between the movable rod 6 and the first slot 4 can be sealed to prevent the liquefied plastic from flowing out. After the sprayer shell is formed, the movable rod 6 is separated from the mold slot 3. At this time, the airflow output from the inside of the diversion pipe 10 can automatically push the sprayer shell out.

[0021] like Figure 3 As shown, the first slot 4 is connected to the mold slot 3, and the diversion pipe 10 is connected to the first slot 4.

[0022] Through the cooperation between the first slot 4 and the mold slot 3, and the cooperation between the diversion pipe 10 and the first slot 4, when the movable rod 6 moves to the bottom of the diversion pipe 10, airflow will be input from the first slot 4 into the interior of the mold slot 3, which facilitates the demolding of the sprayer shell.

[0023] like Figure 3 As shown, the reset spring 8 is elastically supported between the second slot 5 and the piston 7, and the interior of the second slot 5 is filled with hydraulic oil.

[0024] The hydraulic oil filled inside the second slot 5 allows the piston 7 and movable rod 6 to move downwards when the moving mold 2 separates from the fixed mold 1, thanks to the elastic force of the return spring 8. At this time, the hydraulic oil will enter the interior of the fixed cylinder 11 through the round pipe 13 and push up the piston rod 12. When the fixed mold 1 and the moving mold 2 are closed, the moving mold 2 will squeeze the piston rod 12, so that the hydraulic oil can be driven into the interior of the second slot 5 through the piston rod 12, which facilitates the control of the movable rod 6 to return to its original position.

[0025] like Figure 2 As shown, the top end of the piston rod 12 passes through the fixed cylinder 11, and the bottom of the moving mold 2 is in contact with the piston rod 12.

[0026] Through the cooperation between the moving mold 2 and the piston rod 12, when the fixed mold 1 and the moving mold 2 are closed, the bottom of the moving mold 2 will drive the piston rod 12 to move downward along the inner wall of the fixed cylinder 11, so that the hydraulic oil inside can be squeezed into the interior of the second slot 5, causing it to lift the piston 7, thereby driving the movable rod 6 to seal the connection between the mold slot 3 and the first slot 4, so as to avoid affecting the molding of the sprayer shell.

[0027] Working principle: When demolding the sprayer housing, the fixed mold 1 and the moving mold 2 are first separated. At this time, the spring force of 18 will drive the piston 7 to compress the hydraulic oil inside the second slot 5, so that the hydraulic oil is delivered to the inside of the fixed cylinder 11 through the round pipe 13 until the top of the movable rod 6 moves to the bottom of the diversion pipe 10. At this time, the diversion pipe 10 will be directly connected to the mold slot 3. Then, the air pump is controlled to input gas into the air supply pipe 9. At this time, the gas will enter the inside of the first slot 4 through the diversion pipe 10, thereby using air pressure to automatically demold the mold inside the mold slot 3.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A handheld sprayer housing injection mold, comprising a fixed mold (1) and a moving mold (2), wherein a plurality of mold grooves (3) are provided between the fixed mold (1) and the moving mold (2), characterized in that, Also includes: A demolding assembly, which is disposed on a fixed mold (1), is used to demold the sprayer housing; The demolding assembly includes several sets of first slots (4), which are located inside the fixed mold (1). Several sets of second slots (5) are opened inside the fixed mold (1), and the second slots (5) are located directly below the first slots (4). A piston (7) is fitted inside the second slot (5). A movable rod (6) is fixed to the top of the piston (7). A return spring (8) is fitted on the outer surface of the movable rod (6). An air supply pipe (9) is connected to the middle of the fixed mold (1). A diverter pipe (10) is connected to the top of the air supply pipe (9). A fixed cylinder (11) is fixed to the top of the fixed mold (1). A piston rod (12) is fitted inside the fixed cylinder (11). The second slots (5) and the fixed cylinder (11) are connected by a round tube (13).

2. The injection mold for a handheld sprayer housing according to claim 1, characterized in that: The top end of the movable rod (6) passes through the second slot (5) and is slidably connected to the first slot (4), and the top end of the movable rod (6) seals the first slot (4).

3. The injection mold for a handheld sprayer housing according to claim 1, characterized in that: The first slot (4) is connected to the mold slot (3), and the diversion pipe (10) is connected to the first slot (4).

4. The injection mold for a handheld sprayer housing according to claim 1, characterized in that: The reset spring (8) is elastically supported between the second slot (5) and the piston (7), and the interior of the second slot (5) is filled with hydraulic oil.

5. The injection mold for a handheld sprayer housing according to claim 1, characterized in that: The top end of the piston rod (12) passes through the fixed cylinder (11), and the bottom of the moving mold (2) is in contact with the piston rod (12).

6. The injection mold for a handheld sprayer housing according to claim 1, characterized in that: The bottom end of the gas pipeline (9) is connected to an external gas pump.

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