Lightweight capping machine die

Abstract

This utility model discloses a lightweight capping machine mold, including an upper mold and a lower mold. The upper mold has an upper forming surface, which includes a bottle cap inner sidewall forming surface and a bottle cap inner top wall forming surface. The upper mold includes a mold core assembly, which includes a mold rod structure and a mold sleeve structure. The mold sleeve structure is used for forming the bottle cap inner sidewall forming surface, and the mold rod structure is used for forming the bottle cap inner top wall forming surface. The mold rod structure includes a mold rod body and a mold rod end sleeve, which is detachably connected to the end of the mold rod body. The lower mold has a lower forming surface, and the upper forming surface and the lower forming surface cooperate to form a mold cavity for forming bottle caps. This utility model can extend the service life of the mold, facilitate maintenance, and prevent bottle cap dents, resulting in good forming quality.

Description

Technical Field

[0001] This utility model relates to the field of cap-making equipment technology, specifically to a lightweight capping machine mold. Background Technology

[0002] China is a major global manufacturer and consumer of packaging. Plastic packaging accounts for over 30% of the total output value of the packaging industry, making it a vital force in the sector and playing an irreplaceable role in food, beverages, daily necessities, and various industrial and agricultural production areas. In recent years, the plastic packaging industry has seen steady growth in packaging products and materials, with new packaging materials, processes, technologies, and products constantly emerging. Today, most beverages, cosmetics, and pharmaceuticals use plastic packaging, and plastic bottle caps are indispensable in plastic bottle structures, often requiring separate production.

[0003] There are various types of machines and equipment for manufacturing plastic bottle caps, among which the molding capping machine is the most commonly used. Existing capping machine molds, especially the parts used for forming the inner top wall of the bottle cap, are prone to deformation and failure during the mold closing and demolding process, which shortens the life of the parts and the life of the entire mold. Moreover, the replacement cost of these parts is high and the replacement is difficult. On the other hand, the top wall of the bottle cap is prone to dents during the demolding process. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a lightweight capping machine mold that can extend the service life of the mold, facilitate maintenance, and prevent bottle cap dents, resulting in good molding quality.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A lightweight capping machine mold, characterized in that it includes an upper mold and a lower mold;

[0007] The upper mold has an upper forming surface, which includes an inner sidewall forming surface and an inner top wall forming surface of the bottle cap; the upper mold includes a mold core assembly, which includes a mold rod structure and a mold sleeve structure, the mold sleeve structure is used for forming the inner sidewall forming surface of the bottle cap, and the mold rod structure is used for forming the inner top wall forming surface of the bottle cap; the mold rod structure includes a mold rod body and a mold rod end sleeve, and the mold rod end sleeve is detachably connected to the end of the mold rod body;

[0008] The lower mold has a lower forming surface, and the upper forming surface cooperates with the lower forming surface to form a mold cavity for forming bottle caps.

[0009] In one optional embodiment, a first mating portion is formed circumferentially at the end of the mold rod body; a second mating portion is formed inside the mold rod end sleeve, and the first mating portion and the second mating portion are screwed together.

[0010] In one optional embodiment, a demolding air source is further included; the inner top wall molding surface of the bottle cap has an inner ring and an outer ring;

[0011] The end of the mold rod body has a plug portion, and the end face of the plug portion forms the inner ring of the inner top wall forming surface of the bottle cap.

[0012] The mold rod end sleeve has a connecting hole, through which the end of the mold rod body can pass, and the end of the mold rod end sleeve forms the outer ring of the inner top wall forming surface of the bottle cap.

[0013] A first gap is formed between the plug portion of the mold rod body and the connecting hole of the mold rod end sleeve, and the first gap is connected to the demolding air source.

[0014] In one optional embodiment, the mold rod end sleeve is sequentially formed with a forming part, a supporting part and a connecting part along its axial direction. The forming part is used for forming the forming surface of the inner top wall of the bottle cap, and the connecting part is used for connecting with the mold rod body. The supporting part is connected between the forming part and the connecting part.

[0015] In one optional embodiment, the support portion is cone-shaped, with a large end and a small end formed at both ends, the large end of the support portion facing the forming portion, and the small end of the forming portion facing the connecting portion.

[0016] In one optional embodiment, a first gas equalization chamber is formed between the plug portion of the mold rod body and the connecting hole of the mold rod end sleeve, and the first gas equalization chamber communicates with the first gap.

[0017] The support portion of the mold rod end sleeve has a plurality of ventilation holes arranged in a ring, which are used to connect the first gas equalization chamber to the demolding air source.

[0018] In one optional embodiment, a gas distribution chamber is formed between the mold sleeve structure and the mold rod structure, and the gas distribution chamber is connected to the first gas equalization chamber through the vent hole.

[0019] In one optional embodiment, the mold sleeve structure includes an inner mold sleeve and an outer mold sleeve, the outer mold sleeve being sleeved outside the inner mold sleeve, the inner mold sleeve being used for forming the inner plug of the bottle cap, and the outer mold sleeve being used for forming the thread of the bottle cap; a second gap is formed between the inner mold sleeve and the outer mold sleeve, the second gap being used to communicate with a demolding air source.

[0020] In one optional embodiment, a second air-equalizing chamber is formed between the mold rod body and the outer mold sleeve, and the second air-equalizing chamber communicates with the second gap;

[0021] A first air passage is formed on the outer side of the mold rod body, and the first air passage connects the gas distribution chamber and the second gas equalization chamber.

[0022] In one optional embodiment, a second air channel is formed on the outer side of the mold rod body, and the second air channel is connected to the second uniform air chamber and the demolding air source;

[0023] Both the first and second air passages are arranged in a ring around the circumference of the mold rod body.

[0024] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0025] 1. The lightweight capping machine mold of this utility model uses the power provided by the capping machine to drive the mold closing and demolding to achieve the forming and ejection of bottle caps. The lightweight capping machine mold of this embodiment splits the mold rod structure into two parts, namely the mold rod body and the mold rod end sleeve. The mold rod end sleeve is detachably fixed to the end of the mold rod body. The easily worn part is treated as a separate part. When the mold rod structure deforms and fails during the mold closing and demolding process, only the mold rod end sleeve needs to be disassembled and replaced to continue to use it. It is not necessary to replace the entire mold rod structure or disassemble the entire upper mold. This makes maintenance convenient, saves costs, and extends the service life of the mold.

[0026] 2. The lightweight capping machine mold of this utility model forms a first gap between the plug part of the mold rod body and the connecting hole of the mold rod end sleeve, and connects the first gap with the demolding air source, thereby connecting the demolding air source with the inner top wall forming surface of the bottle cap. During the demolding process, the demolding gas from the demolding air source is delivered to the inner top wall forming surface of the bottle cap, and the demolding gas is evenly delivered from the first gap between the inner and outer rings. The gap between the inner top wall forming surface of the bottle cap and the cap plate of the formed bottle cap is connected with the positive pressure air source or the normal pressure air source, which facilitates demolding and at the same time prevents the inner top wall of the bottle cap from sinking, resulting in good forming quality. Attached Figure Description

[0027] Figure 1 This is a perspective view of the lightweight capping machine mold of Example 1;

[0028] Figure 2 This is a front view of the lightweight capping machine mold of Example 1;

[0029] Figure 3 This is a cross-sectional view of section AA of the lightweight capping machine mold in Example 1;

[0030] Figure 4 This is a schematic diagram of the mold rod structure of the lightweight capping machine mold in Example 1;

[0031] Figure 5 This is a schematic diagram showing the connection between the mold rod body and the mold rod end sleeve of the lightweight capping machine mold in Example 1;

[0032] Figure 6 This is a schematic diagram of the structure of the mold rod body of the lightweight capping machine mold in Example 1;

[0033] Figure 7 This is a schematic diagram of the mold rod end sleeve of the lightweight capping machine mold in Example 1.

[0034] In the figure: 10. Mold rod structure; 11. Mold rod body; 111. First mating part; 112. Inner ring of the forming surface of the inner top wall of the bottle cap; 113. Plug part; 114. First air passage; 115. Second air passage; 12. Mold rod end sleeve; 121. Second mating part; 122. Outer ring of the forming surface of the inner top wall of the bottle cap; 123. Connecting hole; 124. Forming part; 125. Support part; 126. Connecting part; 127. Vent hole; 13. First gap; 14. First gas equalization chamber; 15. Second gas equalization chamber; 16. Gas distribution chamber; 20. Mold sleeve structure; 21. Inner mold sleeve; 22. Outer mold sleeve; 23. Second gap; 40. Lower mold; 50. Mold cavity. Detailed Implementation

[0035] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Unless otherwise specified, the materials and equipment used in this embodiment are all commercially available. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0036] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In the description of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0037] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected," "linked," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a connection through an intermediary, or a connection within two elements or an interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0038] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus.

[0039] Example 1:

[0040] Please refer to Figure 1-7 This embodiment provides a lightweight capping machine mold, including an upper mold and a lower mold 40;

[0041] The upper mold has an upper forming surface, which includes an inner sidewall forming surface and an inner top wall forming surface of the bottle cap; the upper mold includes a mold core assembly, which includes a mold rod structure 10 and a mold sleeve structure 20, the mold sleeve structure 20 is used for forming the inner sidewall forming surface of the bottle cap, and the mold rod structure 10 is used for forming the inner top wall forming surface of the bottle cap; the mold rod structure 10 includes a mold rod body 11 and a mold rod end sleeve 12, the mold rod end sleeve 12 being detachably connected to the end of the mold rod body 11;

[0042] The lower mold 40 has a lower forming surface, and the upper forming surface cooperates with the lower forming surface to form a mold cavity 50 for forming a bottle cap.

[0043] Based on the above structure, the upper and lower molds 40 are installed on the capping machine during use. The capping machine provides power to drive the mold closing and demolding to achieve the forming and ejection of the bottle cap. The lightweight capping machine mold of this embodiment splits the mold rod structure 10 into two parts, namely the mold rod body 11 and the mold rod end sleeve 12. The mold rod end sleeve 12 is detachably fixed to the end of the mold rod body 11. The easily worn part is treated as a separate part. When the mold rod structure 10 is deformed and fails during the mold closing and demolding process, only the mold rod end sleeve 12 needs to be disassembled and replaced to continue using it. It is not necessary to replace the entire mold rod structure 10 or disassemble the entire upper mold. This makes maintenance convenient, saves costs, and extends the service life of the mold.

[0044] Specifically, a first mating part 111 is formed circumferentially at the end of the mold rod body 11; a second mating part 121 is formed inside the mold rod end sleeve 12, and the first mating part 111 and the second mating part 121 are screwed together. It has the advantages of simple structure and convenient assembly and disassembly.

[0045] The lightweight capping machine mold of this embodiment also includes a demolding air source (not shown in the figure). The demolding air source can be a positive pressure air source or a normal pressure air source. The demolding air source is connected to the upper mold through a connecting pipe and a connecting nozzle. The specific structure and connection method of the demolding air source are well known to those skilled in the art and will not be described in detail here.

[0046] The inner top wall of the bottle cap has an inner ring and an outer ring; the end of the mold rod body 11 has a plug 113, and the end face of the plug 113 forms the inner ring 112 of the inner top wall of the bottle cap; the mold rod end sleeve 12 has a connecting hole 123, and the connecting hole 123 allows the end of the mold rod body 11 to pass through it, and the end of the mold rod end sleeve 12 forms the outer ring 122 of the inner top wall of the bottle cap.

[0047] A limiting ring is formed around the mold rod body 11, and a limiting surface is formed at the end of the mold rod end sleeve 12. When the mold rod end sleeve 12 is screwed to the mold rod body 11, it is screwed until the limiting surface abuts against the limiting ring. At this time, the inner ring 112 of the inner top wall forming surface of the bottle cap and the outer ring 122 of the inner top wall forming surface of the bottle cap are on the same plane.

[0048] A first gap 13 is formed between the plug portion 113 of the mold rod body 11 and the connecting hole 123 of the mold rod end sleeve 12. The first gap 13 is connected to the demolding gas source, thereby connecting the demolding gas source with the inner top wall forming surface of the bottle cap. During the demolding process, the demolding gas from the demolding gas source is delivered to the inner top wall forming surface of the bottle cap, and the demolding gas is sent out through the first gap 13 between the inner and outer rings. The gap between the inner top wall forming surface of the bottle cap and the cap plate of the formed bottle cap is connected to the positive pressure gas source or the normal pressure gas source, which facilitates demolding and at the same time prevents the inner top wall of the bottle cap from sinking, resulting in good forming quality.

[0049] Furthermore, the mold rod end sleeve 12 is sequentially formed with a forming part 124, a support part 125, and a connecting part 126 along its axial direction. The forming part 124 is used for forming the inner top wall forming surface of the bottle cap, and the connecting part 126 is used for connecting to the mold rod body 11. The support part 125 is connected between the forming part 124 and the connecting part 126. In this embodiment, the support part 125 is conical, with a large end and a small end formed at both ends. The large end of the support part 125 faces the forming part 124, and the small end of the forming part 124 faces the connecting part 126. By providing the support part 125 between the forming part 124 and the connecting part 126, the conical support part 125 helps to support the end face of the forming part 124, so that the mold rod end sleeve 12 is subjected to uniform force during the molding process, avoiding damage and extending its service life.

[0050] The mold sleeve structure 20 of this embodiment includes an inner mold sleeve 21 and an outer mold sleeve 22. The outer mold sleeve 22 is sleeved outside the inner mold sleeve 21. The inner mold sleeve 21 is used for forming the inner plug of the bottle cap, and the outer mold sleeve 22 is used for forming the thread of the bottle cap. A second gap 23 is formed between the inner mold sleeve 21 and the outer mold sleeve 22. The second gap 23 is used to communicate with the demolding air source to facilitate demolding of the inner sidewall forming surface of the bottle cap.

[0051] A first gas equalization chamber 14 is formed between the plug portion 113 of the mold rod body 11 and the connecting hole 123 of the mold rod end sleeve 12. The first gas equalization chamber 14 is connected to the first gap 13. A plurality of ventilation holes 127 are arranged in a ring on the support portion 125 of the mold rod end sleeve 12. The ventilation holes 127 are used to connect the first gas equalization chamber 14 to the demolding air source.

[0052] A gas distribution chamber 16 is formed between the mold sleeve structure 20 and the mold rod structure 10, and the gas distribution chamber 16 is connected to the first gas equalization chamber 14 through the vent hole 127.

[0053] A second gas equalization chamber 15 is formed between the mold rod body 11 and the outer mold sleeve 22, and the second gas equalization chamber 15 is connected to the second gap 23.

[0054] The outer side of the mold rod body 11 has a first air passage 114 and a second air passage 115. The first air passage 114 connects the air distribution chamber 16 and the second air equalization chamber 15; the second air passage 115 connects the second air equalization chamber 15 and the demolding air source.

[0055] The first air passage 114 and the second air passage 115 are both arranged in a ring around the circumference of the mold rod body 11.

[0056] Based on the above structure, the demolding gas source enters the second gas equalization chamber 15 through several second air channels 115. After the second gas equalization chamber 15 is filled, a portion of the demolding gas is evenly delivered to the inner sidewall forming surface of the bottle cap through the second gap 23, realizing the demolding of the inner sidewall of the bottle cap. Another portion of the demolding gas enters the gas distribution chamber 16 through the first air channel 114. The demolding gas in the gas distribution chamber 16 enters the first gas equalization chamber 14 through the vent 127. After the first gas equalization chamber 14 is filled, the demolding gas is evenly delivered to the inner top wall forming surface of the bottle cap through the first gap 13, realizing the demolding of the bottle cap. The lightweight capping machine mold of this embodiment is easy to demold, can prevent the bottle cap from being dented, and the finished bottle cap has good quality.

[0057] Although certain components and embodiments of this application have been illustrated and described, many modifications and alterations (e.g., variations in the size, dimensions, structure, shape and proportion of the various elements, installation arrangement, material use, color, orientation, etc.) will be conceived by those skilled in the art without actually departing from the scope and spirit of the claims.

[0058] Finally, it should be noted that the above embodiments are only preferred embodiments of this utility model and should not be used to limit the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A lightweight capping machine mold, characterized in that, Including the upper mold and the lower mold; The upper mold has an upper forming surface, which includes an inner sidewall forming surface and an inner top wall forming surface of the bottle cap; the upper mold includes a mold core assembly, which includes a mold rod structure and a mold sleeve structure, the mold sleeve structure is used for forming the inner sidewall forming surface of the bottle cap, and the mold rod structure is used for forming the inner top wall forming surface of the bottle cap; the mold rod structure includes a mold rod body and a mold rod end sleeve, and the mold rod end sleeve is detachably connected to the end of the mold rod body; The lower mold has a lower forming surface, and the upper forming surface cooperates with the lower forming surface to form a mold cavity for forming bottle caps.

2. The lightweight capping machine mold according to claim 1, characterized in that, A first mating part is formed circumferentially at the end of the mold rod body; a second mating part is formed inside the mold rod end sleeve, and the first mating part and the second mating part are screwed together.

3. The lightweight capping machine mold according to claim 1, characterized in that, It also includes a demolding air source; the inner top wall molding surface of the bottle cap has an inner ring and an outer ring; The end of the mold rod body has a plug portion, and the end face of the plug portion forms the inner ring of the inner top wall forming surface of the bottle cap. The mold rod end sleeve has a connecting hole, through which the end of the mold rod body can pass. The end sleeve of the mold rod forms the outer ring of the inner top wall forming surface of the bottle cap; A first gap is formed between the plug portion of the mold rod body and the connecting hole of the mold rod end sleeve, and the first gap is connected to the demolding air source.

4. A lightweight capping machine mold according to claim 3, characterized in that, The mold rod end sleeve has a forming part, a supporting part and a connecting part formed sequentially along its axial direction. The forming part is used to form the forming surface of the inner top wall of the bottle cap, and the connecting part is used to connect with the mold rod body. The supporting part is connected between the forming part and the connecting part.

5. A lightweight capping machine mold according to claim 4, characterized in that, The support part is conical in shape, with a large end and a small end at each end. The large end of the support part faces the forming part, and the small end of the forming part faces the connecting part.

6. A lightweight capping machine mold according to claim 4, characterized in that, A first gas equalization chamber is formed between the plug portion of the mold rod body and the connecting hole of the mold rod end sleeve, and the first gas equalization chamber is connected to the first gap. The support portion of the mold rod end sleeve has a plurality of ventilation holes arranged in a ring, which are used to connect the first gas equalization chamber to the demolding air source.

7. A lightweight capping machine mold according to claim 6, characterized in that, An air distribution chamber is formed between the mold sleeve structure and the mold rod structure, and the air distribution chamber is connected to the first air distribution chamber through the vent hole.

8. A lightweight capping machine mold according to claim 7, characterized in that, The mold structure includes an inner mold and an outer mold. The outer mold is fitted outside the inner mold. The inner mold is used for forming the inner plug of the bottle cap, and the outer mold is used for forming the thread of the bottle cap. A second gap is formed between the inner mold and the outer mold, and the second gap is used to communicate with the demolding air source.

9. A lightweight capping machine mold according to claim 8, characterized in that, A second gas equalization chamber is formed between the mold rod body and the outer mold sleeve, and the second gas equalization chamber is connected to the second gap; A first air passage is formed on the outer side of the mold rod body, and the first air passage connects the gas distribution chamber and the second gas equalization chamber.

10. A lightweight capping machine mold according to claim 9, characterized in that, A second air channel is formed on the outer side of the mold rod body, and the second air channel is connected to the second uniform air chamber and the demolding air source; Both the first and second air passages are arranged in a ring around the circumference of the mold rod body.

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