A syringe rubber plug production forming device

Abstract

The utility model provides a kind of syringe rubber plug production forming device, it is related to syringe rubber plug production forming technical field, and it includes: injection-molding workstation, support table, lower mould, upper mould and replacement assembly, injection-molding workstation top is equipped with support table, support table top is equipped with lower mould, and lower mould top is equipped with upper mould, and support table outer end both sides are equipped with replacement assembly, for the quick replacement of lower mould, replacement assembly includes: blanking station, replacement station, limit slot, spare mould and support seat.This kind of syringe rubber plug production forming device can quickly complete the replacement of lower mould by replacement assembly, and the replaced lower mould can be cooled on blanking station and then taken down for cleaning, and it will not affect to continue injection-molding production syringe rubber plug, can avoid scalding caused by lower mould overheat, ensure that lower mould replacement process is safely carried out.

Description

Technical Field

[0001] This utility model relates to the field of syringe stopper manufacturing technology, specifically a syringe stopper manufacturing apparatus. Background Technology

[0002] The syringe stopper (also known as a syringe piston or plunger seal) is a key component inside the syringe, typically made of an elastic material such as medical-grade rubber or thermoplastic elastomer. Located inside the syringe barrel (tube) and connected to the plunger rod, the stopper's outer diameter is slightly larger than the syringe barrel's inner diameter. As it moves within the barrel, it fits tightly against the barrel wall, forming a liquid-tight or airtight seal to prevent leakage of medication or the ingress of air.

[0003] Injector stoppers typically require injection molds (also known as molding dies) during production, especially when using materials such as thermoplastic elastomers (TPE) or liquid silicone rubber (LSR) for injection molding. In existing injection molding production of syringe stoppers, since different sizes of syringe stoppers need to be produced, it is necessary to change the lower mold and then replace it with a lower mold of different cavity size to produce syringe stoppers of different sizes. However, when changing the lower mold, it is not possible to complete the replacement quickly because the lower mold is hot and heavy. Utility Model Content

[0004] The present invention addresses the shortcomings of the prior art by providing a syringe stopper production molding device. This device solves the problem that in the existing syringe stopper injection molding process, when producing syringe stoppers of different sizes, it is necessary to change the lower mold and then replace it with a lower mold of different cavity sizes to produce syringe stoppers of different sizes. However, when changing the lower mold, it is difficult to quickly replace it because the lower mold is hot and heavy.

[0005] Specifically, the replacement of components allows for quick replacement of the lower mold. The removed lower mold can be cooled on the unloading platform before being removed for cleaning, without affecting the continued injection molding of the syringe plug. This avoids burns caused by overheating of the lower mold and ensures safety during the lower mold replacement process.

[0006] The technical problem to be solved by this utility model is achieved by the following technical solution: A syringe stopper manufacturing apparatus includes: an injection molding worktable, a support platform, a lower mold, an upper mold, and a replacement assembly. The support platform is mounted on the top of the injection molding worktable, the lower mold is mounted on the top of the support platform, and the upper mold is mounted on the top of the lower mold. The replacement assembly is provided on both sides of the outer end of the support platform for quickly replacing the lower mold. The replacement assembly includes: a feeding platform, a replacement platform, a limiting groove, a spare mold, and a support base.

[0007] In a further preferred embodiment, a feeding platform is installed on one side of the outer end of the support platform, and a replacement platform is installed on the side of the outer end of the support platform opposite to the feeding platform. Limiting grooves are provided on the top of both the replacement platform and the feeding platform. A spare mold is provided on the top of the replacement platform, and a support base is installed on one side of the bottom of both the replacement platform and the feeding platform.

[0008] In a further preferred embodiment, an injection tube is installed on one side of the top of the upper mold, a fixing plate is provided on the top of the upper mold, an electric cylinder is installed on the top of the fixing plate, a telescopic rod is installed at the bottom of the electric cylinder, and the bottom of the telescopic rod is connected to the upper mold.

[0009] In a further preferred embodiment, sliding rods are installed on both sides of the bottom of the fixing plate, and sliding sleeves that are slidably connected to the sliding rods are installed on both sides of the top of the upper mold.

[0010] In a further preferred embodiment, an electric push rod is installed at the bottom of the support platform, a circular top block is installed at the top of the electric push rod, and an opening is provided at the bottom of the lower mold.

[0011] In a further preferred embodiment, a heat-resistant sealing ring is installed inside the opening, and the circular top block is tightly fitted to the inner wall of the heat-resistant sealing ring.

[0012] In a further preferred embodiment, the support platform has a movable cavity inside, and the electric push rod is located inside the movable cavity.

[0013] Compared with existing technologies, the beneficial effects of this utility model are: (1) The lower mold can be quickly replaced by using the unloading platform, replacement platform, limit groove, spare mold and support base. The replaced lower mold can be cooled on the unloading platform and then taken off for cleaning. It will not affect the continued injection molding production of syringe plugs. It can avoid the lower mold from getting too hot and causing burns, and ensure safety during the replacement of the lower mold. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the support platform structure of this utility model.

[0016] Figure 3 This is a schematic diagram of the feeding platform and replacement platform of this utility model.

[0017] Figure 4 This is a cross-sectional schematic diagram of the support platform of this utility model.

[0018] Figure 5 This is a schematic cross-sectional view of the lower mold of this utility model.

[0019] Figures 1-5 middle: Injection molding workbench; 101, support platform; 102, lower mold; 103, upper mold; 104, injection pipe; 105, fixing plate; 106, electric cylinder; 107, telescopic rod; 108, slide rod; 109, sliding sleeve.

[0020] 201. Unloading platform; 202. Changing platform; 203. Limiting groove; 204. Spare mold; 205. Support base.

[0021] Electric push rod; 301, circular top block; 302, opening; 303, heat-resistant sealing ring; 304, movable cavity. Detailed Implementation

[0022] To further illustrate the technical means and effects adopted by this utility model to achieve its intended purpose, the present utility model will be described in detail below with reference to the accompanying drawings and preferred embodiments. It should be noted that the terms "left," "right," "upper," "lower," "top," "bottom," "one side," "provided with," "installed with," "connected with," "top end," "bottom end," "provided with," "open with," "fixed connection," "movable connection," "threaded connection," "clamping," "sleeving," "outer end," "inner end," "external," and "internal" in the following description are only for ease of understanding and description, and are not intended to indicate or imply that the components or structures referred to must have a specific orientation or installation method, and therefore should not be construed as limitations on this utility model.

[0023] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0024] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments. Example

[0025] like Figures 1-5 As shown, a syringe stopper manufacturing and molding device includes: an injection molding worktable 1, a support platform 101, a lower mold 102, an upper mold 103, and a replacement assembly. The support platform 101 is installed on the top of the injection molding worktable 1, the lower mold 102 is installed on the top of the support platform 101, and the upper mold 103 is provided on the top of the lower mold 102. The replacement assembly is provided on both sides of the outer end of the support platform 101 for quickly replacing the lower mold 102. The replacement assembly includes: a feeding platform 2, a replacement platform 201, a limiting groove 202, a spare mold 203, and a support base 204.

[0026] Among them, an injection tube 104 is installed on one side of the top of the upper mold 103, a fixing plate 105 is provided on the top of the upper mold 103, an electric cylinder 106 is installed on the top of the fixing plate 105, a telescopic rod 107 is installed at the bottom of the electric cylinder 106, and the bottom of the telescopic rod 107 is connected to the upper mold 103.

[0027] When producing syringe stoppers, the electric cylinder 106 is activated to drive the telescopic rod 107 to move downwards. The telescopic rod 107 pushes the upper mold 103 downwards to the lower mold 102, where it fits tightly against the lower mold 102, sealing the cavity inside the lower mold 102. The injection tube 104 is fixed to the feeding hose. The existing feeding hose is connected to the liquid pump on the feeding box. The liquid pump and the feeding box are equipped with a suction pipe. The existing feeding components are all existing technologies. The feeding components consist of a power supply part and a control part, which are well known to those skilled in the art, so they will not be described in detail. After the liquid pump starts working, it draws the raw material for the syringe stopper into the injection tube 104 and discharges it into the cavity inside the lower mold 102, filling the cavity. The syringe stopper is produced and formed by the cooperation of the lower mold 102 and the upper mold 103.

[0028] The fixed plate 105 has slide rods 108 installed on both sides of its bottom, and the upper mold 103 has slide sleeves 109 installed on both sides of its top, which are slidably connected to the slide rods 108.

[0029] When the telescopic rod 107 moves the upper mold 103 up and down, the upper mold 103 is slidably connected to the slide rod 108 through the sliding sleeve 109, ensuring stable operation of the upper mold 103 during its up and down movement and ensuring alignment and sealing with the lower mold 102.

[0030] Among them, a feeding platform 2 is installed on one side of the outer end of the support platform 101, and a replacement platform 201 is installed on the side of the outer end of the support platform 101 opposite to the feeding platform 2. Limiting grooves 202 are opened on the top of the replacement platform 201 and the feeding platform 2. A spare mold 203 is provided on the top of the replacement platform 201, and a support seat 204 is installed on one side of the bottom of the replacement platform 201 and the feeding platform 2.

[0031] When replacing the lower mold 102, first use the telescopic rod 107 to move the upper mold 103 upward to separate it from the lower mold 102. Then, loosen and remove the bolts installed inside the lower mold 102 to release the fixation between the lower mold 102 and the support platform 101. Then, push the lower mold 102 to the unloading platform 2 so that the lower mold 102 moves from the support platform 101 to the unloading platform 2. During the movement, the limiting groove 202 limits the movement to prevent the lower mold 102 from falling off the unloading platform 2. After the lower mold 102 is removed, push the spare mold 203 on the replacement platform 201 to the support platform 101 so that the spare mold 203 is connected and installed with the support platform 101. The replacement of the lower mold 102 is completed quickly. The removed lower mold 102 can be cooled on the unloading platform 2 before being removed for cleaning without affecting the continued injection molding of the syringe plug. This avoids the lower mold 102 getting too hot and causing burns, ensuring safety during the replacement of the lower mold 102.

[0032] The limiting groove 202 is flush with the surface of the support table 101 to ensure that the lower mold 102 will not get stuck when it is moved off the support table 101.

[0033] Among them, the bottom of the support platform 101 is equipped with an electric push rod 3, the top of the electric push rod 3 is equipped with a circular top block 301, and the bottom of the lower mold 102 is provided with an opening 302.

[0034] After the syringe stopper is formed by the cooperation of the lower mold 102 and the upper mold 103, the telescopic rod 107 drives the upper mold 103 to move upward and separate from the lower mold 102. Then, the electric push rod 3 is activated to push the circular top block 301 into the mold cavity of the lower mold 102 through the opening 302 at the bottom of the lower mold 102, and contact the formed syringe stopper. This pushes the syringe stopper out of the mold cavity of the lower mold 102, so that the syringe stopper can be quickly demolded from the mold cavity for easy material removal.

[0035] The opening 302 is equipped with a heat-resistant sealing ring 303, and the circular top block 301 is tightly fitted with the inner wall of the heat-resistant sealing ring 303.

[0036] When the opening 302 and the circular top block 301 are used, the heat-resistant sealing ring 303 can increase the sealing between the opening 302 and the circular top block 301, preventing the raw material entering the mold cavity of the lower mold 102 from flowing out and being wasted, and ensuring that the lower mold 102 and the upper mold 103 can normally produce and shape the syringe plug.

[0037] The support platform 101 has a movable cavity 304 inside, and the electric push rod 3 is located inside the movable cavity 304.

[0038] When the electric push rod 3 is in use, the movable cavity 304 inside the support platform 101 can provide the electric push rod 3 with a space to move, ensuring that the electric push rod 3 can move up and down and extend normally, thereby driving the circular top block 301 to eject the molded syringe plug normally.

[0039] When the electric cylinder 106 and the electric push rod 3 are in use, a control panel is installed on the outside of the injection molding worktable 1. The control panel is electrically connected to the electric cylinder 106 and the electric push rod 3 respectively. The power of the control panel, the electric cylinder 106 and the electric push rod 3 is provided by an external power source. The control panel can control the electric cylinder 106 and the electric push rod 3 to start and stop. The control program involved in this utility model can be implemented by those skilled in the art based on the same or similar principles in the prior art. This part is not the innovation of this utility model.

[0040] Working principle: When producing syringe stoppers, the electric cylinder 106 is activated to drive the telescopic rod 107 to move downwards. The telescopic rod 107 pushes the upper mold 103 downwards to the lower mold 102, where it fits tightly against the lower mold 102, sealing the cavity inside the lower mold 102. The injection tube 104 is fixed to the feeding hose. The existing feeding hose is connected to the liquid pump on the feeding box. The liquid pump and the feeding box are equipped with a suction pipe. The existing feeding components are all existing technologies. The feeding components consist of a power supply and a control unit, which are well known to those skilled in the art, so they will not be described in detail. After the liquid pump starts working, it draws the raw material for the syringe stopper into the injection tube 104 and discharges it into the cavity inside the lower mold 102, filling the cavity. The syringe stopper is produced and molded by the cooperation of the lower mold 102 and the upper mold 103.

[0041] When replacing the lower mold 102, first, the upper mold 103 is moved upwards and separated from the lower mold 102 by the telescopic rod 107. Then, the bolts installed inside the lower mold 102 are loosened and removed, releasing the fixation between the lower mold 102 and the support platform 101. Then, the lower mold 102 is pushed to the unloading platform 2, so that the lower mold 102 moves from the support platform 101 to the unloading platform 2. During the movement, the limiting groove 202 limits the movement to prevent the lower mold 102 from falling off the unloading platform 2. After the lower mold 102 is removed, the spare mold 203 on the replacement platform 201 is pushed to the support platform 101, so that the spare mold 203 is connected and installed with the support platform 101, quickly completing the replacement of the lower mold 102. The replaced lower mold 102 can be cooled on the unloading platform 2 before being removed for cleaning, without affecting the continued injection molding production of syringe plugs. This avoids the lower mold 102 becoming too hot and causing burns, ensuring safety during the replacement of the lower mold 102.

[0042] After the syringe stopper is formed by the cooperation of the lower mold 102 and the upper mold 103, the telescopic rod 107 drives the upper mold 103 to move upward and separate from the lower mold 102. Then, the electric push rod 3 is activated to push the circular top block 301 into the mold cavity of the lower mold 102 through the opening 302 at the bottom of the lower mold 102, and contact the formed syringe stopper. This pushes the syringe stopper out of the mold cavity of the lower mold 102, so that the syringe stopper can be quickly demolded from the mold cavity for easy material removal.

[0043] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0044] The above provides a detailed description of a syringe stopper production and molding apparatus provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A syringe stopper manufacturing and molding apparatus, characterized in that, include: The injection molding workbench (1), support platform (101), lower mold (102), upper mold (103) and replacement components are provided. The support platform (101) is installed on the top of the injection molding workbench (1). The lower mold (102) is installed on the top of the support platform (101). The upper mold (103) is provided on the top of the lower mold (102). Replacement components are provided on both sides of the outer end of the support platform (101) for quickly replacing the lower mold (102). The replacement components include: unloading platform (2), replacement platform (201), limiting groove (202), spare mold (203) and support base (204).

2. The syringe stopper manufacturing apparatus according to claim 1, characterized in that, A feeding platform (2) is installed on one side of the outer end of the support platform (101). A replacement platform (201) is installed on the side of the outer end of the support platform (101) opposite to the feeding platform (2). Limiting grooves (202) are opened on the top of the replacement platform (201) and the feeding platform (2). A spare mold (203) is provided on the top of the replacement platform (201). A support base (204) is installed on one side of the bottom of the replacement platform (201) and the feeding platform (2).

3. The syringe stopper manufacturing apparatus according to claim 1, characterized in that, An injection tube (104) is installed on one side of the top of the upper mold (103). A fixing plate (105) is provided on the top of the upper mold (103). An electric cylinder (106) is installed on the top of the fixing plate (105). A telescopic rod (107) is installed at the bottom of the electric cylinder (106). The bottom of the telescopic rod (107) is connected to the upper mold (103).

4. The syringe stopper manufacturing apparatus according to claim 3, characterized in that, The bottom sides of the fixed plate (105) are equipped with sliding rods (108), and the top sides of the upper mold (103) are equipped with sliding sleeves (109) that are slidably connected to the sliding rods (108).

5. The syringe stopper manufacturing apparatus according to claim 1, characterized in that, An electric push rod (3) is installed at the bottom of the support platform (101), and a circular top block (301) is installed at the top of the electric push rod (3). An opening (302) is provided at the bottom of the lower mold (102).

6. The syringe stopper manufacturing apparatus according to claim 5, characterized in that, A heat-resistant sealing ring (303) is installed inside the opening (302), and the circular top block (301) is in close contact with the inner wall of the heat-resistant sealing ring (303).

7. The syringe stopper manufacturing apparatus according to claim 5, characterized in that, The support platform (101) has an open cavity (304) inside, and the electric push rod (3) is located inside the open cavity (304).

Images