Plastic cup one-to-eight combined mold

Abstract

The utility model relates to the field of plastic production, in particular to a plastic cup one-to-eight combined mold which comprises a mold body, the mold body is composed of an upper mold body located at the upper end and a lower mold body located at the lower end, the upper mold body is composed of an upper mold plate, an upper mold seat plate and an upper mold fixing plate, eight cavities are formed in the bottom face of the upper mold plate, and the lower mold plate is located at the lower end of the mold body. A sprue bush is inserted into the upper mold plate, an injection molding opening is formed in the center of the upper mold fixing plate, the lower mold is composed of a lower mold fixing plate, a push plate and a lower mold plate, a push plate guide column is installed at the center of the push plate, eight mold cores are installed on the top face of the lower mold plate, a guide column is installed on the top face of the lower mold plate, and the lower mold plate is hollow. A push rod fixing plate is connected into the lower die plate in a sleeved mode, eight push rods are arranged on the top face of the push rod fixing plate, and a material pulling rod and a reset rod are arranged on the top face of the push rod fixing plate. According to the design, stress is more uniform during working, the forming quality of the plastic cup is high, meanwhile, production efficiency is high, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic production, in particular to a one-eight-out combined mold for plastic cups. Background Art

[0002] Plastic cups refer to disposable containers for drinks and tea. Nowadays, plastic cups can be seen everywhere, and various derivatives have also appeared. Molds are needed to make plastic cups.

[0003] The patent with publication number CN209036992U discloses a plastic cup mold. The plastic cup mold comprises an upper mold and a lower mold, the upper mold is a cylinder and has an annular groove with an opening downward, the bottom of the annular groove is arc-shaped, a hollow support rod is provided in the central axis direction of the upper mold, the upper end of the hollow support rod passes through the top of the upper mold, the lower mold is a cylinder and has an upward cylindrical cavity in the interior, the upper port of the lower mold is matched with the annular groove, an annular step is provided on the outer wall of the lower mold, and it is matched with the annular step when the upper mold is pressed down, an annular groove is provided on the outer wall of the lower mold near the upper port, the bottom of the annular groove is arc-shaped, and a support rod is provided in the central axis direction of the bottom of the lower mold to slide with the lower mold.

[0004] Although the mouth of the plastic cup produced by the mold of the utility model is curved, which prevents the mouth from causing damage to other parts of the mouth, is safe to use, and solves the problem that the plastic cup produced by the mold easily scratches the mouth skin, its production efficiency and automation level are low, and it still requires a lot of labor. In view of this, we propose a plastic cup one-out eight-combination mold. Utility Model Content

[0005] The utility model aims to provide a one-outlet eight-outlet combined mold for plastic cups to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A one-eight-out combined mold for a plastic cup comprises a mold body, wherein the mold body is composed of an upper mold at the upper end and a lower mold at the lower end;

[0008] The upper mold comprises an upper mold plate, an upper mold base plate, and an upper mold fixing plate which are fixed by bolts from bottom to top in sequence. The bottom surface of the upper mold plate is provided with eight truncated cone-shaped and evenly distributed cavities near the edge. A sprue sleeve is fixedly inserted in the center of the upper mold plate. A positioning ring is fixedly clamped in the center of the upper mold base plate. An injection port for a discharge pipe of an injection molding machine to enter the mold body is provided in the center of the upper mold fixing plate.

[0009] The lower mold comprises a lower mold fixing plate, a push plate, and a lower mold plate which are fixed by bolts in sequence from bottom to top, at least one push plate guide column is fixedly installed near the center of the push plate, eight cores corresponding to the mold cavities in position are fixedly installed on the top surface of the lower mold plate, and push rod holes are opened at the centers of the eight cores, a plurality of guide columns are fixedly installed near the edge of the top surface of the lower mold plate, the lower mold plate is hollow inside and open on the bottom surface, a detachably connected gasket is provided at the edge of the bottom surface of the lower mold plate, a push rod fixing plate is slidably clamped inside the lower mold plate, eight push rods corresponding to the push rod holes in position are fixedly installed on the top surface of the push rod fixing plate, and a pulling rod and a plurality of reset rods are fixedly installed at the center of the top surface and near the edge of the push rod fixing plate respectively;

[0010] A plurality of external hydraulic rods are arranged between the lower die fixing plate and the upper die fixing plate near the edge, and a steel column passing through the lower die fixing plate is arranged at the center between the plurality of external hydraulic rods.

[0011] Preferably, a truncated cone-shaped flow channel is provided inside the sprue sleeve for the injection molding raw material to enter the mold cavity, and a branch flow channel is provided on the bottom surface of the upper mold plate between the sprue sleeve and each of the mold cavities.

[0012] Preferably, the push rod fixing plate is provided with a plurality of through holes which are matched in size with the push plate guide pillars, are equal in number and have corresponding positions, and the push plate guide pillars are slidably inserted into the corresponding through holes in the push rod fixing plate.

[0013] Preferably, the gasket ring is installed cocentrically with the lower template, and the inner diameter of the gasket ring is larger than the outer diameter of the bottom surface of the lower template, and a plurality of the guide pillars are slidably inserted in the upper template.

[0014] Preferably, a groove is provided at the top end of the pulling rod, the pulling rod is slidably inserted in the center of the lower template, and the height of the pulling rod is smaller than the inner height of the lower template.

[0015] Preferably, the push rod is slidably inserted into the lower template through the push rod hole, and a plurality of reset rods are slidably inserted into the top surface of the lower template near the edge.

[0016] Preferably, the volume of the cavity is greater than the volume of the core; when the core is fully inserted into the cavity, a gap of 0.02 to 0.1 cm is left between the outer wall of the core and the inner wall of the cavity.

[0017] Preferably, the top end of the external hydraulic rod is fixed to the external frame by bolts, the bottom end of the steel column is fixed to the plane by bolts, the lower mold fixing plate and the center of the push plate are coaxially provided with an inner through hole for the steel column to pass through the lower mold, and the steel column can lift the push rod fixing plate of the lower mold moving downward until the core is demolded; the external hydraulic rod includes an outer rod and an inner rod slidably inserted outside the outer rod, the outer rod is inserted and fixed in the lower mold fixing plate, and the top end of the inner rod is fixedly connected to the upper mold fixing plate by bolts.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. The eight-out-of-one combined mold for plastic cups uses a hydraulic device as the power source, which not only ensures the quality of the plastic cups produced, but also ensures production efficiency. At the same time, the degree of automated production is high, which greatly reduces manual labor;

[0020] 2. The plastic cup has eight combined molds, which can make the force more even during operation, so that the cup molding quality is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a structural schematic diagram of the mold opening of the mold device in the utility model;

[0023] Figure 3 It is a schematic diagram of the main cross-sectional structure of the mold body in the utility model;

[0024] Figure 4 It is a schematic diagram of the overall explosion structure of the utility model mold body;

[0025] Figure 5 It is a schematic diagram of the structure of the lower template in the utility model when viewed from above;

[0026] Figure 6 It is a schematic diagram of the main cross-sectional structure of the lower template in the utility model;

[0027] Figure 7 It is a schematic diagram of the structure of the upper template in the utility model when viewed from above;

[0028] Figure 8 It is a schematic diagram of the cross-sectional structure of the upper template in the utility model;

[0029] Fig. 9 This is a schematic diagram of the structure of the push rod fixing plate in the utility model;

[0030] In the figure:

[0031] 1. Mold body;

[0032] 2. Upper mold; 20. Upper mold plate; 201. Cavity; 202. Runner; 21. Sprue bushing; 22. Upper mold base plate; 23. Positioning ring; 24. Upper mold fixing plate; 240. Injection port;

[0033] 3. Lower die; 30. Lower die fixing plate; 31. Push plate; 310. Push plate guide pin; 32. Push rod fixing plate; 320. Push rod; 321. Reset rod; 322. Pull rod; 33. Lower die plate; 330. Core; 331. Guide pin; 332. Push rod hole; 334. Gasket;

[0034] 4. External hydraulic rod; 401. External rod; 402. Internal rod;

[0035] 5. Steel column. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solution in the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] See also Figure 1-Figure 9 , the utility model provides a technical solution:

[0038] A one-outlet eight-out combination mold for a plastic cup comprises a mold body 1, the mold body 1 is composed of an upper mold 2 at the upper end and a lower mold 3 at the lower end, the upper mold 2 comprises an upper mold plate 20, an upper mold base plate 22, and an upper mold fixing plate 24 which are fixed by bolts from bottom to top in sequence, eight truncated cone-shaped and evenly distributed cavities 201 are provided near the edge of the bottom surface of the upper mold plate 20, a sprue sleeve 21 is fixedly inserted in the center of the upper mold plate 20, a positioning ring 23 is fixedly clamped in the center of the upper mold base plate 22, an injection port 240 for the discharge pipe of the injection molding machine to enter the mold body 1 is provided at the center of the upper mold fixing plate 24, and the lower mold 3 comprises a lower mold fixing plate 30, a push plate 31, and a lower mold plate 33 which are fixed by bolts from bottom to top in sequence, at least one push plate guide column 310 is fixedly installed near the center of the push plate 31, and a lower mold plate 33 is fixedly installed on the top surface of the lower mold plate 33. There are eight cores 330 corresponding to the cavities 201 in position, and push rod holes 332 are opened in the centers of the eight cores 330. A plurality of guide pillars 331 are fixedly installed on the top surface of the lower mold plate 33 near the edge. The lower mold plate 33 is hollow inside and open on the bottom. A detachable gasket ring 334 is provided at the edge of the bottom surface of the lower mold plate 33. A push rod fixing plate 32 is slidably connected inside the lower mold plate 33. Eight push rods 320 corresponding to the push rod holes 332 in position are fixedly installed on the top surface of the push rod fixing plate 32, and a pulling rod 322 and a plurality of reset rods 321 are fixedly installed at the center and near the edge of the top surface of the push rod fixing plate 32 respectively. A plurality of external hydraulic rods 4 are provided near the edge between the lower mold fixing plate 30 and the upper mold fixing plate 24, and a steel column 5 passing through the lower mold fixing plate 30 is provided at the center between the plurality of external hydraulic rods 4.

[0039] In this embodiment, a truncated cone-shaped flow channel is provided inside the sprue sleeve 21 for the injection molding material to enter the cavity 201. The sprue sleeve 21 is in direct contact with the injection machine nozzle and is a part with a main flow channel. A branch flow channel 202 is provided on the bottom surface of the upper mold plate 20 between the sprue sleeve 21 and each cavity 201. The branch flow channel 202 can be used to flow the injection molding material from the main flow channel to each cavity to ensure the quality of the finished plastic cup.

[0040] In this embodiment, a plurality of through holes are provided on the push rod fixing plate 32, which are matched in size with the push plate guide pillars 310, are equal in number and have corresponding positions. The push plate guide pillars 310 are slidably inserted into the corresponding through holes on the push rod fixing plate 32. The push rod fixing plate 32 is mainly used to fix the push rod 320 and the reset rod 321, and ensure that the position of the finished plastic cup is accurate and stable when it is pushed out. The push plate guide pillars 310 are used to ensure that the push rod fixing plate 32 will not produce movement deviation when moving up and down.

[0041] In this embodiment, the gasket 334 is installed concentrically with the lower mold plate 33, and the inner diameter of the gasket 334 is larger than the outer diameter of the bottom surface of the lower mold plate 33, so that the gasket 334 has a larger space to form the sliding space required for the push rod fixing plate 32 to determine the ejection distance of the finished plastic cup. A plurality of guide pillars 331 are slidably inserted in the upper mold plate 20, and the guide pillars 331 are parts used to determine the relative position between the lower mold 3 part and the upper mold 2 part.

[0042] In this embodiment, a groove is provided at the top of the pulling rod 322. The groove on the top surface of the pulling rod 322 is used to pull out the raw material in the gate sleeve 21 to prevent the injection raw material from solidifying and blocking its flow channel. The pulling rod 322 is slidably inserted in the center of the lower mold plate 33, and the height of the pulling rod 322 is less than the internal height of the lower mold plate 33, so as to form a certain material removal space inside the lower mold plate 33. At the same time, when the raw material is injected into the mold, it is ensured that the pulling rod 322 will not block the flow channel.

[0043] In this embodiment, the push rod 320 is slidably inserted into the lower template 33 through the push rod hole 332, and a plurality of reset rods 321 are slidably inserted into the top surface of the lower template 33 near the edge to push out the finished plastic cup.

[0044] In this embodiment, the volume of the cavity 201 is greater than the volume of the core 330; when the core 330 is fully inserted into the cavity 201, a gap of 0.02 to 0.1 cm is left between the outer wall of the core 330 and the inner wall of the cavity 201. The core 330 is a convex part on the lower template. When the mold body 1 is merged, the gap between the core 330 and the cavity 201 constitutes the molding space of the mold. When the mold is opened, the finished product is attached to the outer surface of the core 330.

[0045] In this embodiment, the top end of the external hydraulic rod 4 is fixed to the external frame by bolts, and the bottom end of the steel column 5 is fixed to the plane by bolts. The lower mold fixing plate 30 and the center of the push plate 31 are coaxially provided with an inner through hole for the steel column 5 to pass through. When the lower mold 3 passes downward through the steel column 5, the steel column 5 pushes the push rod fixing plate 32 upward until the core 330 is demoulded; the external hydraulic rod 4 includes an outer rod 401 and an inner rod 402 slidably inserted in the outer rod 401. The outer rod 401 is inserted and fixed in the lower mold fixing plate 30, and the top end of the inner rod 402 is fixedly connected to the upper mold fixing plate 24 by bolts.

[0046] Finally, it should be noted that the components such as the external hydraulic rod 4 involved in the utility model are all universal standard parts or components known to technical personnel in the field. Their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods, and will not be elaborated here.

[0047] When the eight-outlet combined mold for a plastic cup of the utility model is in use, the upper mold 2 is fixed on the outer rod 401, the lower mold 3 is fixed on the inner rod 402, and the lower mold 3 moves upward with the outer hydraulic rod 4 until the lower mold 3 fits with the upper mold plate 20, and this state is the mold closing state; then the injection molding machine starts to move toward the injection port 240 and starts to inject the material, and the material enters the cavity 201 along the gate sleeve runner 211 and the branch runner 202. After the cup is formed, it will adhere to the surface of the core 330, and the lower mold 3 moves downward with the outer hydraulic rod 4 until it is penetrated by the steel column 5. The steel column 5 pushes the push rod fixing plate 32 upward, and at the same time, the push rod 320 passes through the push rod hole 332 to push the cup out, and this state is the mold opening state.

[0048] The above shows and describes the basic principle, main features and advantages of the present embodiment of the utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiment. The above embodiment and description are only preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present embodiment may have various changes and improvements, which fall within the scope of the present utility model to be protected. The scope of protection claimed by the present utility model is defined by the attached claims and their equivalents.

Claims

1. A plastic cup one-out-eight combined mold, characterized by: The mold body (1) comprises an upper mold (2) at the upper end and a lower mold (3) at the lower end; The upper mold (2) comprises an upper mold plate (20), an upper mold base plate (22), and an upper mold fixing plate (24) which are fixed by bolts in sequence from bottom to top; eight truncated cone-shaped and evenly distributed mold cavities (201) are provided on the bottom surface of the upper mold plate (20) near the edge; a gate sleeve (21) is fixedly inserted in the center of the upper mold plate (20); a positioning ring (23) is fixedly clamped in the center of the upper mold base plate (22); and an injection port (240) for a discharge pipe of an injection molding machine to enter the mold body (1) is provided in the center of the upper mold fixing plate (24); The lower mold (3) comprises a lower mold fixing plate (30), a push plate (31), and a lower mold plate (33) which are fixed in sequence from bottom to top by bolts. The push plate (31) is fixedly installed with at least one push plate guide column (310) near the center thereof. The top surface of the lower mold plate (33) is fixedly installed with eight cores (330) which correspond to the mold cavities (201) in position one by one, and push rod holes (332) are opened at the centers of the eight cores (330). The top surface of the lower mold plate (33) is fixedly installed with a plurality of guide columns near the edge thereof. (331), the lower template (33) is hollow inside and open at the bottom, a detachably connected gasket (334) is provided at the edge of the bottom surface of the lower template (33), a push rod fixing plate (32) is slidably connected inside the lower template (33), eight push rods (320) corresponding to the push rod holes (332) in position are fixedly installed on the top surface of the push rod fixing plate (32), and a pulling rod (322) and a plurality of reset rods (321) are fixedly installed at the center of the top surface and near the edge of the push rod fixing plate (32); A plurality of external hydraulic rods (4) are arranged near the edge between the lower mold fixing plate (30) and the upper mold fixing plate (24), and a steel column (5) passing through the lower mold fixing plate (30) is arranged at the center between the plurality of external hydraulic rods (4).

2. The one-out-eight combined mold for plastic cups according to claim 1, characterized in that: The sprue sleeve (21) is provided with a truncated cone-shaped flow channel for injection molding raw materials to enter the mold cavity (201), and the bottom surface of the upper mold plate (20) is provided with a branch flow channel (202) between the sprue sleeve (21) and each of the mold cavities (201).

3. The one-out-of-eight combined mold for plastic cups according to claim 1, characterized in that: The push rod fixing plate (32) is provided with a plurality of through holes which are matched in size with the push plate guide pillars (310), are equal in number and have corresponding positions, and the push plate guide pillars (310) are slidably inserted into the corresponding through holes on the push rod fixing plate (32).

4. The one-out-eight combined mold for plastic cups according to claim 1, characterized in that: The gasket (334) is installed cocentrically with the lower template (33), and the inner diameter of the gasket (334) is larger than the outer diameter of the bottom surface of the lower template (33). A plurality of guide pillars (331) are slidably inserted into the upper template (20).

5. The one-out-eight combined mold for plastic cups according to claim 1, characterized in that: A groove is provided at the top of the pulling rod (322), and the pulling rod (322) is slidably inserted in the center of the lower template (33), and the height of the pulling rod (322) is smaller than the inner height of the lower template (33).

6. The one-out-eight combined mold for plastic cups according to claim 1, characterized in that: The push rod (320) is slidably inserted into the lower template (33) through the push rod hole (332), and a plurality of reset rods (321) are slidably inserted on the top surface of the lower template (33) near the edge.

7. The one-out-eight combined mold for plastic cups according to claim 1, characterized in that: The volume of the mold cavity (201) is greater than the volume of the core (330); when the core (330) is fully inserted into the mold cavity (201), a gap of 0.02 to 0.1 cm is left between the outer wall of the core (330) and the inner wall of the mold cavity (201).

8. The one-out-of-eight combined mold for plastic cups according to claim 1, characterized in that: The top end of the external hydraulic rod (4) is fixed to the external frame by bolts, and the bottom end of the steel column (5) is fixed to the plane by bolts. The lower mold fixing plate (30) and the center of the push plate (31) are coaxially provided with an inner through hole for the steel column (5) to pass through the lower mold (3). The steel column (5) can push the push rod fixing plate (32) of the lower mold (3) moving downward upward until the core (330) is demoulded. The external hydraulic rod (4) includes an outer rod (401) and an inner rod (402) slidably inserted into the outer rod (401), the outer rod (401) is inserted and fixed in the lower mold fixing plate (30), and the top end of the inner rod (402) is fixedly connected to the upper mold fixing plate (24) by bolts.

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