A dining car floor board injection molding die

Abstract

The utility model discloses a kind of dining car floor board injection moulding mould, belong to mould technical field. Including mounting plate, laminated connection shell one, shell two, shell three and top cover, and the mould pressing mechanism being set to the inside of shell two. Mould pressing mechanism it includes the connecting plate and cylinder being fixed in the outside of shell two, the output end of cylinder is fixedly connected through connecting frame with the extrusion plate of the side wall of shell two and inside, extrusion plate top is fixedly connected with the extrusion column of matrix, extrusion column top end is fixedly connected with mould pressing plate, and mould pressing plate is set below mould cavity. When working, cylinder drives connecting frame to drive extrusion plate and mould pressing plate movement, realizes the auxiliary compression or ejection action of mould cavity. The utility model solves the problem that existing mould lacks internal stable drive and precision centering, improves the compactness and forming precision of injection molding part, and simultaneously through the optimization arrangement of cooling pipe, effectively shortens production cycle.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to an injection molding mold for a food cart partition. Background Technology

[0002] Food cart partitions, as key load-bearing components in various service carts and logistics food carts, are typically made of thermoplastic plastics through injection molding. Due to the characteristics of food cart usage scenarios, partitions are required to have a large load-bearing area, good flatness, and high structural strength. Therefore, in the injection molding process, the structural design of the mold plays a crucial role in ensuring product molding quality, dimensional accuracy, and production efficiency.

[0003] However, in the existing injection molding technology system, the structural design of mold cavities for such large-area flat parts often has certain limitations. Traditional mold bases and drive structures are relatively simple, usually relying entirely on the ejector pins or clamping mechanisms of the injection molding machine to passively execute actions. The mold itself lacks an independent, stable, and controllable internal drive and pressurization mechanism. When facing the injection molding requirements of large-sized partition plates, this passive structure makes it difficult to achieve uniform and synchronous auxiliary compression or ejection actions within the mold.

[0004] Specifically, existing molds often lack effective external power input interfaces and internal precision transmission chains when performing internal template lifting for pressing or demolding operations. This leads to tilting and jamming of the internal template during operation due to a single stress point or lack of guidance. This instability in movement not only causes quality defects such as warping and inconsistent wall thickness in the partition plate due to uneven local stress, but in severe cases, it can even cause wear and damage to the moving parts of the mold, shortening the mold's service life and making it difficult to meet the modern industrial demand for efficient and precise manufacturing of high-quality food cart partition plates. Therefore, a food cart partition plate injection molding mold is proposed to solve the above problems. Utility Model Content

[0005] In view of the problems existing in the injection mold cavity of food cart partition panels, such as the lack of an independent, stable and controllable internal driving and pressurization mechanism, and the tendency of the internal template to tilt and jam due to lack of precision guidance during the lifting process, this utility model aims to provide a food cart partition panel injection mold cavity with an improved structure that can effectively solve the above problems.

[0006] This utility model provides an injection molding mold for a food cart partition panel, including: a mounting plate, outer shell one, outer shell two, outer shell three, a top cover, and a pressing mechanism.

[0007] Among them, the mounting plate serves as the basic load-bearing component of the mold. Its top is fixedly connected to the first outer shell, the top of the first outer shell is fixedly connected to the second outer shell, the top of the second outer shell is fixedly connected to the third outer shell, and the top cover is fixed to the top of the third outer shell by fastening bolts, which together constitute the outer shell layer structure of the mold.

[0008] The core innovation lies in the pressure molding mechanism installed inside the mold. This mechanism includes a connecting plate, a cylinder, a connecting frame, an extrusion plate, an extrusion column, and a pressure plate. The specific structure and connection relationships are as follows:

[0009] The connecting plate is fixedly connected to the outer side wall of the second outer shell, serving as a rigid frame to support the drive components. The cylinder, as a power source, is mounted on the connecting plate, and the output end of the cylinder is fixedly connected to the connecting frame. The connecting frame extends through the through hole in the side wall of the second outer shell into the interior of the second outer shell and is firmly fixedly connected to the extrusion plate located inside the second outer shell. The extrusion plate is horizontally set at the bottom of the inner cavity of the second outer shell and is used to receive power from the cylinder for vertical lifting and lowering movement. Several extrusion columns are fixedly connected to the top surface of the extrusion plate. The extrusion columns are evenly distributed in a matrix and serve as push rods for uniformly transmitting power. The tops of the several extrusion columns are all fixedly connected to a pressure template, which is set below the mold cavity, and its surface matches the bottom of the mold cavity.

[0010] Through the above combination, during operation, the cylinder drives the connecting frame to move, the connecting frame drives the extrusion plate to move, and the extrusion plate synchronously transmits power to the matrix-arranged extrusion columns, which ultimately causes the extrusion columns to move the pressure plate closer to or away from the mold cavity and apply the set pressure, thus realizing precise and stable auxiliary compression or ejection action inside the mold.

[0011] Preferably, the mold further includes a guide rod, which is designed as a high-strength long rod structure that sequentially passes through the interior of the second outer shell, the first outer shell, and the mounting plate. The bottom of the guide rod is fixedly connected to the mounting plate. The guide rod is configured to penetrate the multi-layer shell structure, providing a long-stroke, high-rigidity guide reference for the vertical movement of the extrusion plate and the pressing plate of the pressing mechanism, further improving the accuracy of the mold movement.

[0012] Preferably, a guide sleeve is also fixed inside the outer shell, and a guide post is provided at the corresponding position on the outer periphery of the pressure plate or mold cavity. The upper end of the guide post and the guide sleeve form a sliding connection that fits precisely. The combination of the guide post and the guide sleeve ensures the centering accuracy of the mold in the final closing and pressurizing stage and eliminates the mold closing gap deviation.

[0013] Preferably, the mold cavity and the cavity location are provided with cooling pipes. The cooling pipes are distributed in an S-shape or mesh structure inside the outer shell three and located in the area above the mold cavity. The two ends of the cooling pipes extend through the side wall of the outer shell three to the outside of the mold. The cooling pipes are configured to quickly remove the heat accumulated in the raw material in the mold cavity and the cavity through efficient heat exchange after being connected to an external cooling device, thereby greatly shortening the injection molding cycle.

[0014] Preferably, the connecting plate is a rigid L-shaped plate structure. The vertical part of the connecting plate is fixed to the outer side wall of the outer shell II by screws, and the horizontal part is used to stably support the vertically installed cylinder. At the same time, the connecting frame adopts a bent or Z-shaped structure to connect the cylinder piston rod and the internal extrusion plate. This design ensures that the external power can be smoothly converted into the vertical lifting and lowering movement of the internal components without interference.

[0015] Preferably, a connector is fixedly connected to the side of the mounting plate. The connector is configured as an electrical interface for reliably connecting to an external power source to provide the required electrical energy to the cylinder solenoid valve or other electrical components integrated in the mold.

[0016] This utility model has the following beneficial effects:

[0017] 1. This utility model solves the problems of lack of efficient auxiliary compression function and poor applicability of single ejection mechanism in the existing mold structure by setting a connecting plate and cylinder on the outside of the outer shell, and using a connecting frame to connect the internal extrusion plate through the outer shell, thereby driving the matrix-arranged extrusion columns and pressure plate to move. It achieves the ability to accurately control the internal pressure plate to uniformly press or assist ejection of the mold cavity through external power, improves the density and demolding convenience of the injection molding of the food cart partition, and enhances the overall structural functionality of the mold.

[0018] 2. This utility model solves the problems of mold movement trajectory deviation and mold closing misalignment caused by uneven force during injection molding and mold opening and closing by integrating a guide sleeve inside the outer shell and setting guide posts at the pressure plate or mold cavity position to form a precision column sleeve fit. At the same time, it uses a guide rod that penetrates through the multi-layer shell structure to guide the pressure molding mechanism for a long stroke. This achieves the technical effect of significantly improving the mold closing centering accuracy, eliminating product flash and uneven wall thickness defects, and ensuring stable and reliable mold movement.

[0019] 3. This utility model solves the problem of traditional mold cooling water circuit design being simple and having low heat dissipation efficiency, resulting in long curing time and easy thermal deformation of the food cart partition plate. It solves the problem by setting S-shaped or mesh-like cooling pipes in the three inner cavities of the outer shell and placing them above the mold cavity. It achieves the effect of using a large-area covered circulating water circuit to quickly remove heat from the mold cavity, greatly shortening the injection molding cycle and improving product shaping quality and production efficiency. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of an injection molding mold for a food cart partition panel proposed in this utility model;

[0021] Figure 2 This is a schematic diagram of the connecting plate of an injection molding die for a food cart partition panel proposed in this utility model;

[0022] Figure 3 This is a schematic diagram of the outer shell of the injection molding mold for a food cart partition panel proposed in this utility model;

[0023] Figure 4 This is a schematic diagram of the top cover of an injection molding mold for a food cart partition panel proposed in this utility model;

[0024] Figure 5 This is a schematic diagram of the guide sleeve of an injection molding die for a food cart partition panel proposed in this utility model;

[0025] Figure 6 This is a schematic diagram of the guide rod of the injection molding mold for a food cart partition panel proposed in this utility model;

[0026] Figure 7 This is a schematic diagram of the extrusion column of an injection molding die for a food cart partition panel proposed in this utility model.

[0027] Legend:

[0028] 1. Mounting plate; 2. Connector; 3. Outer shell one; 4. Outer shell two; 5. Outer shell three; 6. Pressing mechanism; 61. Connecting plate; 62. Cylinder; 63. Connecting frame; 64. Extrusion plate; 65. Extrusion column; 66. Pressing plate; 67. Mold cavity; 68. Guide rod; 69. Guide column; 7. Guide sleeve; 8. Cooling pipe; 9. Top cover; 10. Fastening bolts. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example:

[0031] Reference Figures 1 to 7 This utility model provides an injection molding mold for a food cart partition, which aims to solve the structural defects in the prior art, such as insufficient mold clamping precision and low molding cooling efficiency, which lead to poor product quality.

[0032] A food cart partition injection molding mold includes a mounting plate 1 and a shell assembly stacked and fixedly connected above the mounting plate 1. The shell assembly is provided with a pressing mechanism 6 for driving the mold to close and apply pressure.

[0033] Mounting plate 1 serves as the basic load-bearing component of the mold, supporting the weight of the entire mold assembly and providing a stable mounting surface. Connector 2 is fixedly connected to the side of mounting plate 1, which is used to connect to an external power source to enable power supply to electrical components. Housing 1 3 is fixedly connected to the top plane of mounting plate 1. Housing 2 4 is fixedly connected to the top of housing 1 3. Housing 3 5 is fixedly connected to the top of housing 2 4. Top cover 9 is fixedly connected to the top of housing 3 5. Top cover 9 is secured to the top plane of housing 3 5 by fastening bolts 10 passing through countersunk holes on the surface of top cover 9 and screwing into threaded holes on the top of housing 3 5, thereby firmly pressing and fixing top cover 9 to the top plane of housing 3 5 to form a closed upper structure of the mold.

[0034] A connecting plate 61 is fixedly connected to the outer side wall of the second outer shell 4. The connecting plate 61 serves as the rigid frame of the molding mechanism 6 to support the driving components. A cylinder 62 is installed on the connecting plate 61. The cylinder 62 serves as a power source and can output a stable linear thrust. A connecting frame 63 is fixedly connected to the output end of the cylinder 62. The other end of the connecting frame 63 extends through the through hole opened in the side wall of the second outer shell 4 into the interior of the second outer shell 4 and is fixedly connected to the extrusion plate 64 located inside the second outer shell 4.

[0035] The extrusion plate 64 is horizontally positioned at the bottom of the inner cavity of the outer shell 4. It is used to receive the power transmitted from the cylinder 62 via the connecting frame 63 and to move it. Multiple extrusion columns 65 are fixedly connected to the top surface of the extrusion plate 64. The multiple extrusion columns 65 are evenly distributed in a matrix to synchronously and evenly transmit the power of the extrusion plate 64 upward. The top of the extrusion columns 65 are all fixedly connected to the pressure plate 66. The pressure plate 66 is positioned below the mold cavity 67 and is used to approach the mold cavity 67 under the power drive and apply a set pressure to complete the injection compression action.

[0036] The guide rod 68 is designed as a high-strength long rod structure, and the guide rod 68 passes through the interior of the outer shell 4, the outer shell 3 and the mounting plate 1 in the vertical direction. The bottom end of the guide rod 68 is fixedly connected to or tightly fitted into the deep hole of the mounting plate 1. By penetrating the multi-layer shell structure, the guide rod 68 provides a long-stroke, high-rigidity guide reference for the up and down movement of the entire molding mechanism 6, ensuring that the movement trajectory of the extrusion plate 64 and the pressing plate 66 under stress always remains vertical and accurate, effectively preventing the mechanism from jamming or deflecting due to lateral force.

[0037] Inside the outer shell 3 5, a guide sleeve 7 for precision positioning is fixedly installed. The guide sleeve 7 is embedded in the four corners or key stress areas of the inner cavity of the outer shell 3 5. Correspondingly, a vertically upward guide post 69 is fixedly installed at the outer periphery of the lower pressure platen 66 or the mold cavity 67. During the process of the pressure mold mechanism 6 performing the mold closing action to move the pressure platen 66 upward, the upper end of the guide post 69 can be accurately inserted into and slidably fitted inside the guide sleeve 7. This precision column sleeve fit structure formed by the guide post 69 and the guide sleeve 7 ensures the centering accuracy of the mold in the final closing and pressurizing stage, eliminates the mold closing gap deviation, and thus ensures the uniformity of the wall thickness of the injection molded partition of the dining car.

[0038] In a preferred embodiment, a cooling pipe 8 is provided inside the outer shell 3 5. The cooling pipe 8 is fixedly installed in the inner cavity of the outer shell 3 5 and arranged in an S-shaped or mesh-like structure directly above the mold cavity 67. The two ends of the cooling pipe 8 extend through the side wall of the outer shell 3 5 to the outside of the mold. This structure allows the cooling pipe 8 to be connected to an external cooling circulation device. When the low-temperature coolant flows inside, it can quickly remove the heat accumulated in the mold cavity 67 and the raw material in the cavity through efficient heat exchange. The connecting plate 61 is fixedly connected to the outer wall of the outer shell 2 4, and the cylinder 62 is vertically installed on the horizontal surface of the connecting plate 61 and connected to the outer shell 2 4. The connecting frame 63 adopts a bent or Z-shaped rigid structure. One end of the connecting frame 63 is fixedly connected to the piston rod of the cylinder 62, and the other end passes through the side wall of the outer shell 2 4 and is firmly connected to the internal extrusion plate 64 through a strip-shaped through hole. This ensures that the external vertical power can be smoothly converted into the vertical lifting and lowering motion of the internal components without interference. The extrusion plate 64 is horizontally set at the bottom of the inner cavity of the outer shell 2 4. Several extrusion columns 65 are arranged in a matrix on the upper surface of the extrusion plate 64. This multi-point support structure ensures that the pressure plate 66 is subjected to uniform force and prevents the pressure plate 66 from deforming or tilting due to local stress concentration during the compression process.

[0039] The implementation principle of this application embodiment is as follows: the mounting plate 1 serves as the basic bearing component of the mold, and is connected to the power supply through the connector 2. The top of the mounting plate 1 is fixedly connected to the outer shell 3, the top of the outer shell 3 is fixedly connected to the outer shell 4, the top of the outer shell 4 is fixedly connected to the outer shell 5, the top of the outer shell 5 is fixedly connected to the top of the outer shell 5, and the top cover 9 is fixedly connected to the top of the outer shell 5 by fastening bolts 10. The outer shell 4 is fixedly connected to the outside of the outer shell 61, and the connecting plate 61 is used to install the cylinder 62. Injection molding is performed through the compression molding mechanism 6.

[0040] Before the compression molding mechanism 6 performs the mold closing action, a guide column 69 is fixed inside the guide sleeve 7 inside the outer shell 2 4 to form a precise guiding fit. The guide rod 68 passes through the outer shell 2 4, the outer shell 1 3, and the mounting plate 1 to ensure the accurate movement trajectory of the compression molding mechanism 6, laying the foundation for the mold closing accuracy of compression molding. The outer shell 2 4 is fixedly connected to the outside of the connecting plate 61 as the rigid skeleton of the mechanism. A cylinder 62 is installed on the connecting plate 61. The cylinder 62 outputs a stable thrust to drive the connecting frame 63 fixedly connected to it to move. Then the connecting frame 63 drives the extrusion plate 64 fixedly connected to it to move. At this time, the extrusion plate 64 transmits power synchronously to the multiple extrusion columns 65 fixedly connected to it at the top, so that the extrusion columns 65 drive the compression plate 66 fixedly connected to it at the top to approach the mold cavity 67 and apply the set pressure. After the injection compression is completed, the cooling pipe 8 starts to work. Both ends are connected to the external cooling device. When the coolant circulates in the pipe, it quickly removes the heat of the mold cavity 67 and the raw material in the cavity through heat exchange, accelerates the curing and shaping of the partition plate, shortens the production cycle, and thus achieves the effect of compression molding.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mold for injection molding a partition panel of a food cart, comprising a mounting plate (1), a first outer shell (3), a second outer shell (4), a third outer shell (5), a top cover (9), and a molding mechanism (6); The mounting plate (1) serves as a support component for the mold base. Its top is fixedly connected to the outer shell 1 (3), the top of the outer shell 1 (3) is fixedly connected to the outer shell 2 (4), the top of the outer shell 2 (4) is fixedly connected to the outer shell 3 (5), and the top cover (9) is fixed to the top of the outer shell 3 (5) by fastening bolts (10). Its features are, The outer shell 2 (4) is externally fixedly connected to a connecting plate (61), and the connecting plate (61) serves as a rigid frame on which a cylinder (62) is mounted. The output end of the cylinder (62) is fixedly connected to the connecting frame (63), which passes through the side wall of the outer shell (4) and is fixedly connected to the extrusion plate (64) located inside the outer shell (4). The top of the extrusion plate (64) is fixedly connected to several extrusion columns (65), and the tops of the several extrusion columns (65) are fixedly connected to a pressing template (66), which is located below the mold cavity (67).

2. The injection molding mold for a food cart partition panel according to claim 1, characterized in that, During operation, the cylinder (62) drives the connecting frame (63) to move, the connecting frame (63) drives the extrusion plate (64) to move, and the extrusion plate (64) transmits power synchronously to the extrusion column (65), so that the extrusion column (65) drives the pressing plate (66) to approach the mold cavity (67) and apply a set pressure. The mold also includes a guide rod (68), which passes through the outer shell second (4), outer shell first (3) and mounting plate (1) in sequence, and the guide rod (68) is configured to ensure the accurate movement trajectory of the pressing mechanism (6).

3. The injection molding mold for a food cart partition panel according to claim 1, characterized in that, The outer shell (4) has a guide sleeve (7) fixed inside, and a guide post (69) is provided at the position of the pressing template (66) or the mold cavity (67). The guide post (69) and the guide sleeve (7) form a precision guiding fit.

4. The injection molding mold for a food cart partition panel according to claim 1, characterized in that, Cooling pipes (8) are provided in the mold cavity (67) and the cavity position. The two ends of the cooling pipes (8) are connected to external cooling devices and are configured to remove the heat of the raw materials in the mold cavity (67) and the cavity through heat exchange when the coolant is circulating.

5. The injection molding mold for a food cart partition panel according to claim 1, characterized in that, The mounting plate (1) has a connector (2) fixedly connected to its side, and the connector (2) is used to connect to a power source.

6. The injection molding mold for a food cart partition panel according to claim 1, characterized in that, The connecting plate (61) is fixed to the outer side wall of the outer shell (4), the cylinder (62) is vertically mounted on the connecting plate (61), and the connecting frame (63) has a bent structure to connect the cylinder (62) and the extrusion plate (64).

7. The injection molding mold for a food cart partition panel according to claim 1, characterized in that, The extrusion plate (64) is disposed at the bottom of the inner cavity of the outer shell (4), and the extrusion columns (65) are distributed in a matrix on the upper surface of the extrusion plate (64).

8. The injection molding mold for a food cart partition panel according to claim 4, characterized in that, The cooling pipes (8) are distributed in a mesh structure inside the outer shell (5) and located above the mold cavity (67).

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