Injection mold for simultaneous demolding of a cup lid and a spoon

Abstract

The utility model belongs to injection mold field provides a kind of for cup cover and spoon synchronous demolding injection mold, comprising: fixed mould base;Movable mould base, it is movably arranged in the lower of fixed mould base, and after movable mould base and fixed mould base are pasted, cup cover cavity and spoon cavity that are not interconnected are formed between movable mould base and fixed mould base;First demolding component is set in movable mould base, and first demolding component includes core, movable mould plate and core block are set in movable mould base, and core is movably penetrated through core block. Compared with prior art, the utility model has the advantages that through the distribution demolding operation of first demolding component and second demolding component, it is guaranteed that buckle portion can be smoothly separated from mould, and simultaneously using the formed reserved gap, so that cup cover and spoon can be pushed out simultaneously, avoid the problem of low efficiency caused by the step-by-step demolding in traditional mould, improve production efficiency, and also provide convenience for subsequent packaging operation.

Description

Technical Field

[0001] This utility model belongs to the field of injection molds, specifically relating to an injection mold for simultaneous demolding of a cup lid and a spoon. Background Technology

[0002] In the fields of food packaging and disposable tableware, cup lids and spoons are often used together as matching components. In order to meet the needs of product functionality, portability and ease of use, modern designs often set a buckle structure on the inner wall of the cup lid to securely fix the spoon to the cup lid, so as to prevent the spoon from falling off or becoming contaminated during transportation or use. Although this structural design improves the practicality of the product, it also puts forward higher requirements for the molding and demolding processes of injection molds.

[0003] In existing technologies, common injection molds typically employ a split-mold structure to separately mold the cup lid and spoon, and the demolding process is also mostly carried out in steps. Specifically, after the mold completes injection molding, the cup lid is demolded first, followed by the spoon. The entire demolding process is quite cumbersome, not only time-consuming but also prone to product deformation or damage during the demolding of the cup lid's snap-fit ​​structure, affecting the yield rate. Especially when the snap-fit ​​structure is complex or small in size, traditional demolding methods are difficult to control precisely, easily causing snap-fit ​​breakage or incomplete demolding, leading to an increased product scrap rate. In addition, the separate demolding steps make subsequent packaging operations cumbersome (requiring each spoon and cup lid to be selected and paired for packaging), seriously affecting overall production efficiency. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing an injection mold that ensures stable demolding of the snap-fit ​​part and facilitates subsequent packaging after simultaneous demolding of the spoon and cup lid.

[0005] The purpose of this utility model can be achieved through the following technical solution: a molding die for simultaneous demolding of a cup lid and a spoon is proposed, wherein the inner wall of the cup lid has a snap-fit ​​part, including: a fixed mold base;

[0006] A movable mold base is movably disposed below the fixed mold base, and after the movable mold base and the fixed mold base are fitted together, a cup lid cavity and a spoon cavity that are not connected to each other are formed between the movable mold base and the fixed mold base;

[0007] A first demolding component is disposed within the moving mold base. The first demolding component includes a core. A moving mold plate and a core block are disposed within the moving mold base. The core moves through the core block to form the snap-fit ​​portion between the core and the core block.

[0008] A second demolding assembly and a third demolding assembly are disposed within the moving mold base. The second demolding assembly is connected to the moving mold plate and has a reserved gap with the third demolding assembly. When the third demolding assembly moves, it is used to extend into the spoon-shaped cavity.

[0009] The first demolding component is used to push the core to move along the direction of the fixed mold base to separate the cup lid from the moving mold plate. When the second demolding component pushes the moving mold plate to lift, the snap-fit ​​part disengages from the core. At the same time, the second demolding component abuts against the third demolding component to demold the cup lid and the spoon to the desired position simultaneously.

[0010] In the above-mentioned injection mold for simultaneous demolding of cup lid and spoon, the first demolding component includes a driving component and a core fixing plate. The output end of the driving component is connected to a push plate, which movably abuts against the core fixing plate. The bottom end of the core is connected to the core fixing plate, so that when the push plate moves, it can drive the core through the core block.

[0011] In the aforementioned injection mold for simultaneous demolding of a cup lid and a spoon, a demolding gap is formed between the core fixing plate and the moving mold base.

[0012] In the above-mentioned injection mold for simultaneous demolding of cup lid and spoon, a guide post is also provided in the moving mold base, and a guide sleeve is installed in both the core fixing plate and the push plate, with the guide post movably inserted into the guide sleeve.

[0013] In the above-mentioned injection mold for simultaneous demolding of cup lid and spoon, the second demolding component includes a lifting plate and a connecting plate. The lifting plate is located below the connecting plate and abuts against it. A connecting column is installed on the connecting plate, which passes through the push plate and the core fixing plate and is connected to the moving template.

[0014] In the aforementioned injection mold for simultaneous demolding of a cup lid and a spoon, an elastic element is also connected between the connecting plate and the moving mold base.

[0015] In the aforementioned injection mold for simultaneous demolding of a cup lid and a spoon, an anti-misalignment guide sleeve is installed in both the lifting plate and the connecting plate, and an anti-misalignment column is installed in the anti-misalignment guide sleeve.

[0016] In the above-mentioned injection mold for simultaneous demolding of a cup lid and a spoon, the third demolding component includes a receiving plate and a demolding module. The receiving plate is located below the demolding module and abuts against it. The receiving plate and the connecting plate form the demolding pre-reserved gap. Several push rods are installed on the demolding module, and the push rods extend movably into the spoon cavity.

[0017] In the aforementioned injection mold for simultaneous demolding of a cup lid and a spoon, an inclined pad is installed on the fixed mold base, and an inclined surface is formed on the inner wall of the moving mold base, with the inclined pad movably pressed against the inclined surface.

[0018] In the aforementioned injection mold for simultaneous demolding of a cup lid and a spoon, a guide hole is provided on the moving mold base, and a guide post is connected to the fixed mold base, with the guide post movably inserted into the guide hole.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) The present invention provides an injection mold for simultaneous demolding of cup lid and spoon. Through the distributed demolding operation of the first demolding component and the second demolding component, the snap-fit ​​part can be smoothly released from the mold, which effectively prevents the cup lid from being damaged during demolding and affecting the product qualification rate. At the same time, the reserved gap formed allows the cup lid and spoon to be pushed out at the same time, avoiding the inefficiency caused by the step-by-step demolding in traditional molds. While improving production efficiency, it also provides convenience for subsequent packaging operations. This mold realizes the integration of the injection molding process and packaging process of cup lid and matching spoon, and improves versatility and adaptability.

[0021] (2) An elastic element is set between the connecting plate and the moving mold base so that the lifting plate can be accurately reset after demolding, which improves the response speed and automation of the demolding component, reduces manual intervention, and improves the overall production efficiency.

[0022] (3) By setting inclined pads on the fixed mold base and fitting them to the inclined surface of the moving mold base, the fitting stability between the moving mold base and the fixed mold base is enhanced, the sealing performance and molding accuracy when the mold is closed are improved, and molding defects such as flash are reduced, thus improving product quality. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the moving mold base;

[0024] Figure 2 yes Figure 1 Schematic diagram of the cross section at point AA;

[0025] Figure 3 yes Figure 1 Schematic diagram of the cross section at point BB;

[0026] Figure 4 yes Figure 1 Enlarged view of section C in the image;

[0027] Figure 5 This is a schematic diagram of the installation structure between the first demolding component, the second demolding component, and the moving template;

[0028] Figure 6 This is a schematic diagram of the fixed mold base.

[0029] In the picture, 1 is the cup lid; 10 is the snap fastener.

[0030] 2. Fixed mold base; 20. Inclined pad; 21. Guide pillar;

[0031] 3. Moving mold base; 30. Moving mold plate; 31. Core block; 32. Inclined surface; 33. Guide hole;

[0032] 4. First demolding assembly; 40. Core; 41. Drive component; 42. Core fixing plate; 420. Demolding gap; 43. Push plate;

[0033] 5. Second demolding assembly; 50. Reserved gap; 51. Lifting plate; 52. Connecting plate; 53. Connecting column; 530. Elastic element; 54. Anti-detachment guide sleeve; 55. Anti-detachment column;

[0034] 6. Third demolding component; 60. Support plate; 61. Demolding module; 62. Ejector rod. Detailed Implementation

[0035] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0036] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0037] like Figures 1 to 6 As shown, this utility model discloses an injection mold for simultaneous demolding of a cup lid 1 and a spoon. The inner wall of the cup lid 1 has a snap-fit ​​part 10, and includes a fixed mold base 2, a moving mold base 3, a first demolding component 4, a second demolding component 5, and a third demolding component 6.

[0038] The moving mold base 3 is movably disposed below the fixed mold base 2, and after the moving mold base 3 and the fixed mold base 2 are fitted together, a cup lid cavity 1 and a spoon cavity that are not interconnected are formed between the moving mold base 3 and the fixed mold base 2; the first demolding assembly 4 is disposed in the moving mold base 3, and the first demolding assembly 4 includes a core 40. The moving mold base 3 is provided with a moving template 30 and a core block 31. The core 40 movably passes through the core block 31 to form a snap-fit ​​part 10 between the core 40 and the core block 31; the second demolding assembly 5 and the third demolding assembly 6 are disposed in the moving mold base 3. Inside the mold base 3, the second demolding component 5 is connected to the moving template 30, and there is a reserved gap 50 between it and the third demolding component 6; when the third demolding component 6 moves, it is used to extend into the spoon cavity; the first demolding component 4 is used to push the core 40 to move along the direction of the fixed mold base 2 to separate the cup lid 1 from the moving template 30, and when the second demolding component 5 pushes the moving template 30 to lift, the snap-fit ​​part 10 disengages from the core 40, and at the same time the second demolding component 5 abuts against the third demolding component 6 to demold the cup lid 1 and the spoon to the desired position simultaneously.

[0039] like Figure 4 As shown, the inner wall of the cup lid 1 to be formed in this embodiment has a snap-fit ​​part 10. The snap-fit ​​part 10 allows the cup lid 1 to be easily snapped onto the cup body to achieve the required sealing function. Specifically, after the moving mold base 3 and the fixed mold base 2 are attached, the mold forms non-connected casting channels. These two channels (i.e., the spoon cavity and the cup lid 1 cavity) are used for one-time injection molding of the cup lid 1 and spoon. After injection molding is completed, the moving mold base 3 gradually moves away from the fixed mold base 2 (i.e., mold opening action). At this time, the first demolding component 4 is activated, pushing the core 40 along the... Figure 2 The cup lid 1 moves vertically upward, thus separating it from the core block 31. It's worth noting that at this point, the latching part 10 remains latched within the core 40, and there is a height difference between the cup lid 1 and the moving template 30. As the second demolding component 5 is activated, it pushes the moving template 30 upward (see reference). Figure 6This allows the moving template 30 to contact the cup lid 1 during its lifting motion. The lifting action of the moving template 30 then detaches the cup lid 1 and its latching part 10 from the core 40. Simultaneously, due to the pre-reserved gap 50, the third demolding component 6 does not shift before the moving template 30 contacts the cup lid 1. Only when the moving template 30 and cup lid 1 are in contact does the second demolding component 5 also press against the third demolding component 6. This ensures that during subsequent lifting of the moving template 30, the latching part 10 detaches from the core 40 along with the cup lid 1, while the molded spoon is also detached from the core 40 by the third demolding component 6. Driven to detach from the spoon cavity, the demolding action of the cup lid 1 and the spoon is at the same frequency, which helps to ensure that they are in the same horizontal position after synchronous demolding. This avoids the inefficiency caused by the step-by-step demolding required in traditional molds, and improves production efficiency. At the same time, the cup lid 1 and the spoon can be picked up synchronously by an external robotic arm (which may be equipped with suction cups) and sent to the subsequent packaging process. The whole process does not require manual secondary sorting and packaging of the cup lid 1 and the spoon. This mold realizes the integration of the injection molding process and packaging process of the cup lid 1 and the matching spoon, and improves versatility and adaptability.

[0040] The first demolding assembly 4 includes a drive component 41 and a core fixing plate 42. The output end of the drive component 41 is connected to a push plate 43, which moves against the core fixing plate 42. The bottom end of the core 40 is connected to the core fixing plate 42, so that when the push plate 43 moves, it can drive the core 40 through the core block 31.

[0041] like Figure 2 As shown, in this embodiment, the bottom of the core 40 is arranged in an inverted T-shape, and a corresponding T-shaped groove is provided in the core fixing plate 42. As the bottom end of the core 40 is inserted into the core fixing plate 42, the connection between the core 40 and the core fixing plate 42 is ensured by the push plate 43 pressing against the core fixing plate 42. This method also facilitates installation and disassembly, providing convenience for subsequent maintenance and replacement. Meanwhile, the driving component 41 drives the push plate 43 along... Figure 2 When the core fixing plate 42 moves vertically upward, the core 40 can move synchronously along the direction of the core. Figure 2 The mold moves vertically upwards to detach the cup lid 1 from the core block 31 on the core 40, creating a height difference with the moving template 30. It should be noted that this height difference is the same as the distance of the aforementioned pre-reserved gap 50, facilitating the synchronous demolding of the spoon and cup lid 1 subsequently. This structure is simple to operate, ensuring the molding quality and demolding consistency of the cup lid 1's snap-fit ​​part 10, and improving the demolding accuracy and service life of the mold.

[0042] like Figure 2As shown, this embodiment also provides a demolding gap 420 between the core fixing plate 42 and the moving mold base 3, which provides a buffer space for the movement of the core 40, avoids structural damage caused by rigid contact during demolding, improves the stability and safety of the demolding process, and extends the service life of the mold.

[0043] Preferably, in this embodiment, a guide post (not shown in the figure) is also provided in the moving mold base 3, and a guide sleeve (not shown in the figure) is installed in both the core fixing plate 42 and the push plate 43. By movably inserting the guide post into the guide sleeve, the guiding accuracy of the core 40 during the movement process is ensured, avoiding offset or jamming, improving the stability and repeatability of the demolding action, thereby improving the product molding quality.

[0044] The second demolding assembly 5 includes a lifting plate 51 and a connecting plate 52. The lifting plate 51 is located below the connecting plate 52 and abuts against it. A connecting column 53 is installed on the connecting plate 52. The connecting column 53 passes through the push plate 43 and the core fixing plate 42 and is connected to the moving template 30.

[0045] like Figure 3 and Figure 5 As shown, before the demolding action begins, there is a height difference between the second demolding component 5 and the third demolding component 6 in this embodiment (i.e., Figure 5 The reserved gap 50 shown indicates that, therefore, along the second demolding assembly 5 Figure 5 When lifted vertically upwards, because the connecting plate 52 and the moving template 30 are connected by the connecting column 53, the moving template 30 will move synchronously along the second demolding component 5 when it moves. Figure 5 Moving vertically upwards, and because there is a height difference between the moving template 30 and the cup lid 1 on the core block 31, and a reserved gap 50 between the connecting plate 52 and the third demolding component 6, the lifting plate 51 and the connecting plate 52 need to be raised a certain distance until the connecting plate 52 and the third demolding component 6 are pressed together. At this time, the moving template 30 also moves and presses against the bottom wall of the cup lid 1. As the lifting plate 51 and the connecting plate 52 move upwards again... Figure 5 Moving vertically upwards, the snap-fit ​​part 10 can be disengaged from the core 40 along with the cup lid 1 due to the lifting action of the moving template 30. At the same time, the third demolding component 6 is also pushed out of the spoon cavity by the connecting plate 52. This structure can effectively transmit demolding force, ensure synchronous and stable demolding action, and improve demolding efficiency and the overall coordination of mold operation.

[0046] Preferably, such as Figure 5As shown, in this embodiment, an elastic element 530 is also connected between the connecting plate 52 and the moving mold base 3. The elastic element 530 enables automatic reset after demolding, reducing manual intervention, improving the automation level of the mold and continuous production efficiency, and also plays a buffering role to avoid structural damage caused by excessive impact during demolding.

[0047] More preferably, such as Figure 5 As shown, by installing anti-misalignment guide sleeves in the lifting plate 51 and connecting plate 52, and using them in conjunction with anti-misalignment pillars, misalignment or malfunction between components during demolding can be effectively prevented, ensuring the accuracy and stability of the demolding components and improving the reliability of mold operation and demolding precision.

[0048] The third demolding assembly 6 includes a receiving plate 60 and a demolding module 61. The receiving plate 60 is located below the demolding module 61 and abuts against it. The receiving plate 60 and the connecting plate 52 form a demolding clearance 50. Several ejector rods 62 are installed on the demolding module 61. The ejector rods 62 extend movably into the spoon-shaped cavity.

[0049] like Figure 3 and Figure 5 As shown, after the connecting plate 52 is lifted by the lifting plate 51 and pressed against the bottom wall of the receiving plate 60 (i.e., after the reserved gap 50 is completely eliminated), the connecting plate 52 can push the receiving plate 60 upward together. Then, during the upward movement of the demolding module 61, the top of the ejector rod 62 extends into the spoon cavity to remove the molded spoon from the spoon cavity, completing the demolding action. It is worth noting that when the connecting plate 52 pushes the receiving plate 60 upward, the connecting plate 52 simultaneously pushes the moving template 30 to lift, thereby disengaging the snap-fit ​​part 10 from the core 40 and completing the demolding action along with the cup lid 1. This demolding structure is simple and reliable. Moreover, the reserved demolding gap 420 between the receiving plate 60 and the connecting plate 52 ensures the coordination and synchronicity of the demolding action, realizing the synchronous demolding of the spoon and the cup lid 1, improving production efficiency and product consistency.

[0050] like Figure 1 and Figure 6 As shown, in this embodiment, an inclined pad 20 is provided on the fixed mold base 2 and cooperates with the inclined surface 32 of the inner wall of the moving mold base 3. This can achieve a tight fit between the moving mold base 3 and the fixed mold base 2, improve the sealing performance and molding accuracy when the mold is closed, and at the same time help the separation action during demolding, thereby improving the stability and service life of the mold operation.

[0051] Preferably, in this embodiment, a guide hole 33 is provided on the moving mold base 3 and a guide post 21 is installed on the fixed mold base 2 to form a guide mating structure, which ensures the precise alignment of the moving mold base 3 and the fixed mold base 2 during the opening and closing process, avoids offset or misalignment, improves the mold closing accuracy and product forming quality, and enhances the reliability of mold operation.

[0052] It should be noted that the driving component 41 in this embodiment can be replaced by other driving devices such as hydraulic drive or cylinder drive. Similarly, the elastic component 530 in this embodiment can be replaced by other elastic devices such as compression spring or return spring.

[0053] It should be noted that in this invention, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly specified. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0054] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0055] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. An injection mold for simultaneous demolding of a cup lid and a spoon, wherein the inner wall of the cup lid has a snap-fit ​​portion, characterized in that, include: Fixed mold base; A movable mold base is movably disposed below the fixed mold base, and after the movable mold base and the fixed mold base are fitted together, a cup lid cavity and a spoon cavity that are not connected to each other are formed between the movable mold base and the fixed mold base; A first demolding component is disposed within the moving mold base. The first demolding component includes a core. A moving mold plate and a core block are disposed within the moving mold base. The core moves through the core block to form the snap-fit ​​portion between the core and the core block. A second demolding assembly and a third demolding assembly are disposed within the moving mold base. The second demolding assembly is connected to the moving mold plate and has a reserved gap with the third demolding assembly. When the third demolding assembly moves, it is used to extend into the spoon-shaped cavity. The first demolding component is used to push the core to move along the direction of the fixed mold base to separate the cup lid from the moving mold plate. When the second demolding component pushes the moving mold plate to lift, the snap-fit ​​part disengages from the core. At the same time, the second demolding component abuts against the third demolding component to demold the cup lid and the spoon to the desired position simultaneously.

2. The injection mold for simultaneous demolding of a cup lid and a spoon according to claim 1, characterized in that, The first demolding assembly includes a driving component and a core fixing plate. The output end of the driving component is connected to a push plate, which movably abuts against the core fixing plate. The bottom end of the core is connected to the core fixing plate, so that when the push plate moves, it can drive the core through the core block.

3. The injection mold for simultaneous demolding of a cup lid and a spoon according to claim 2, characterized in that, A demolding gap is formed between the core fixing plate and the moving mold base.

4. The injection mold for simultaneous demolding of a cup lid and a spoon according to claim 2, characterized in that, The moving mold base is also provided with a guide post, and the core fixing plate and the push plate are both equipped with a guide sleeve, and the guide post is movably inserted into the guide sleeve.

5. The injection mold for simultaneous demolding of a cup lid and a spoon according to claim 2, characterized in that, The second demolding assembly includes a lifting plate and a connecting plate. The lifting plate is located below the connecting plate and abuts against it. A connecting column is installed on the connecting plate, which passes through the push plate and the core fixing plate and is connected to the moving template.

6. The injection mold for simultaneous demolding of a cup lid and a spoon according to claim 5, characterized in that, An elastic element is also connected between the connecting plate and the moving mold base.

7. The injection mold for simultaneous demolding of a cup lid and a spoon according to claim 5, characterized in that, An anti-misalignment guide sleeve is installed inside both the lifting plate and the connecting plate, and an anti-misalignment column is installed inside the anti-misalignment guide sleeve.

8. An injection mold for simultaneous demolding of a cup lid and a spoon according to claim 5, characterized in that, The third demolding assembly includes a receiving plate and a demolding module. The receiving plate is located below the demolding module and abuts against it. The receiving plate and the connecting plate form the demolding pre-reserved gap. Several push rods are installed on the demolding module, and the push rods extend movably into the spoon-shaped cavity.

9. The injection mold for simultaneous demolding of a cup lid and a spoon according to claim 1, characterized in that, An inclined pad is installed on the fixed mold base, and an inclined surface is formed on the inner wall of the moving mold base. The inclined pad is movably attached to the inclined surface.

10. An injection mold for simultaneous demolding of a cup lid and a spoon according to claim 1, characterized in that, The moving mold base has a guide hole, and the fixed mold base is connected to a guide post, which is movably inserted into the guide hole.

Images