Lunch box mold
By designing a hydraulic column-driven bottom mold drop structure, the problem of traditional molds using active driving structure when ejecting the lunch box is solved, achieving more efficient and higher-rate ejection of the lunch box.
Patent Information
- Application Number
- CN202421302964.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-07
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-06-07
AI Technical Summary
Traditional lunch box molds require active driving structures such as electric push cylinders or springs when ejecting the lunch box, resulting in power consumption and some lunch boxes cannot be fully ejected.
A lunch box mold is designed, and the bottom mold is driven down by a hydraulic column, and the thrust structure is used to lift the lunch box out to avoid the power structure of active thrust.
The lunch box mold can be automatically ejected without the need for an active driving structure, which improves the ejection efficiency and ejection rate of the lunch box.
Smart Images
Figure CN222607824U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of molds, and in particular relates to a lunch box mold. Background Art
[0002] Disposable fast food boxes have shifted from traditional foam lunch boxes to environmentally friendly lunch boxes. The original foam lunch boxes were eliminated because they were not resistant to high temperatures and the production process caused damage to the environment. They were replaced by plastic lunch boxes, paper lunch boxes, wooden lunch boxes, metal foil lunch boxes, etc. Among them, metal foil lunch boxes are widely used because of their advantages such as high temperature resistance, non-toxicity, recyclability and more environmental protection. The material of the metal foil lunch box is usually aluminum foil or tin foil. The stamping process is adopted during production. The commonly used lunch box stamping mold has a fixed bottom mold and a top mold that moves up and down for stamping. Since the lunch box remains in the mold cavity of the bottom mold after stamping, an ejection mechanism is required to eject the lunch box for easy removal of the lunch box.
[0003] Since the bottom mold of the traditional mold is fixed, the ejection mechanism needs to adopt an active drive structure such as an electric push cylinder for ejection, which consumes electricity. Some ejection mechanisms use spring ejection. After stamping, some lunch boxes will be tightly stretched in the bottom mold cavity. The use of spring ejection cannot guarantee that all lunch boxes can be ejected. Utility Model Content
[0004] The utility model aims to provide a lunch box mould, which, when ejecting the lunch box, utilizes the descending stroke of the bottom mould and the ejection structure to eject the lunch box automatically, without adopting an active ejection power structure, so as to solve the problems raised in the above-mentioned background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lunch box mold, comprising a base plate and a bottom mold, the bottom mold is movably arranged above the base plate, the four corners of the bottom mold are fixedly connected with hydraulic columns, the bottom ends of the hydraulic columns are fixedly connected with the top end of the base plate, the top end of the base plate is fixedly connected with a top mold structure, the bottom mold is arranged below the top mold structure, and the bottom of the bottom mold cavity is provided with an ejection structure, the ejection structure comprises a top plate slidably connected to the inside of the bottom mold cavity, the bottom end of the top plate is fixedly connected with an insert cylinder, the insert cylinder passes through the bottom end of the bottom mold, the outside of the insert cylinder is movably connected with a cylinder, and the bottom end of the cylinder is fixedly connected to the top end of the base plate.
[0006] Furthermore, the bottom end of the bottom mold cavity is provided with a groove matching with the top plate.
[0007] Furthermore, the top mold structure includes a mounting plate, the bottom end of the mounting plate is fixedly connected to the top mold, the top mold and the bottom mold are arranged correspondingly, support columns are symmetrically arranged on both sides of the bottom end of the mounting plate, and the bottom end of the support column is fixedly connected to the top end of the base plate.
[0008] Furthermore, reinforcing ribs are symmetrically arranged on the top of the mounting plate.
[0009] Furthermore, a spring is arranged inside the insert tube, and two ends of the spring are respectively fixedly connected to the top end of the inner wall of the insert tube and the bottom end of the inner wall of the cylinder, and the top end of the cylinder is fixedly connected to a ring.
[0010] Furthermore, the cross section of the top plate is H-shaped.
[0011] Furthermore, a support structure is symmetrically arranged at the top of the base plate, and the support structure includes a U-shaped frame fixedly connected to the top of the base plate, the top of the U-shaped frame and the top of the ring are in the same horizontal plane, and an intermediate plate is fixedly connected to the middle of the U-shaped frame.
[0012] Compared with the prior art, the utility model has the beneficial effect that when ejecting the lunch box, the ejection structure automatically ejects the lunch box by utilizing the descending stroke of the bottom mold, without the need for an active ejection power structure, and can also improve the ejection efficiency and ejection rate of the lunch box. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0014] Figure 2 It is a left sectional view of the utility model;
[0015] Figure 3 It is a front view of the utility model;
[0016] Figure 4 It is an exploded view of the bottom mold and ejection structure of the utility model.
[0017] In the accompanying drawings, the components represented by the reference numerals are listed as follows:
[0018] 1. Base plate; 2. Bottom mold; 21. Groove; 3. Hydraulic column; 4. Top mold structure; 41. Mounting plate; 42. Top mold; 43. Support column; 44. Reinforcement rib; 5. Ejection structure; 51. Top plate; 52. Cylinder; 53. Insert cylinder; 54. Spring; 55. Ring; 6. Support structure; 61. U-shaped frame; 62. Middle plate. DETAILED DESCRIPTION
[0019] In order to make the purpose and advantages of the utility model more clear, the utility model is specifically described in combination with the following embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the utility model, and does not strictly limit the protection scope of the specific request of the utility model.
[0020] like Figure 1-4As shown, a lunch box mold comprises a base plate 1 and a bottom mold 2, the bottom mold 2 is movably arranged above the base plate 1, the four corners of the bottom mold 2 are fixedly connected with hydraulic columns 3, the bottom ends of the hydraulic columns 3 are fixedly connected to the top of the base plate 1, the top of the base plate 1 is fixedly connected with a top mold structure 4, the bottom mold 2 is arranged below the top mold structure 4, and the bottom of the mold cavity of the bottom mold 2 is provided with an ejection structure 5, the ejection structure 5 comprises a top plate 51 slidably connected to the inside of the mold cavity of the bottom mold 2, the bottom end of the top plate 51 is fixedly connected with an insert cylinder 53, the insert cylinder 53 passes through the bottom end of the bottom mold 2, the outside of the insert cylinder 53 is movably connected with a cylinder 52, the bottom end of the cylinder 52 is fixedly connected to the top of the base plate 1, and the bottom end of the mold cavity of the bottom mold 2 is provided with a groove 21 matching the top plate 51.
[0021] According to the above structure, when producing aluminum foil lunch boxes, the stamping original plate is placed inside the bottom mold 2, and then the bottom mold 2 is driven to rise by the hydraulic column 3. During the rising process, the top mold structure 4 squeezes the stamping original plate, thereby stamping the lunch box into shape. During stamping, the top plate 51 rises together with the bottom mold 2 inside the groove 21. When the stamping is completed, the hydraulic column 3 drives the bottom mold 2 to descend, and the top plate 51 descends. When it descends to a certain height, the bottom end of the insert cylinder 53 contacts the bottom end of the inner wall of the cylinder 52, and the insert cylinder 53 supports the top plate 51 to stop descending, and the bottom mold 2 continues to descend. At this time, the top plate 51 will automatically eject the lunch box inside the mold cavity of the bottom mold 2. When ejecting the lunch box, the bottom mold 2 is used for self-determination of ejection by descending stroke. The structure is simple, and the ejection efficiency and ejection rate of the lunch box are improved.
[0022] like Figure 3 As shown, the top mold structure 4 includes a mounting plate 41, the bottom end of the mounting plate 41 is fixedly connected to a top mold 42, the top mold 42 is arranged corresponding to the bottom mold 2, support columns 43 are symmetrically arranged on both sides of the bottom end of the mounting plate 41, the bottom end of the support column 43 is fixedly connected to the top end of the base plate 1, and reinforcing ribs 44 are symmetrically arranged on the top end of the mounting plate 41.
[0023] According to the above structure, during stamping, the top die 42 at the bottom end of the mounting plate 41 is fixed above the bottom die 2. When the bottom die 2 rises, the top die 42 cooperates with the bottom die 2 for stamping, and the reinforcing ribs 44 play a role in reinforcing the mounting plate 41 to prevent the mounting plate 41 from deformation.
[0024] like Figure 4 As shown, the cross section of the top plate 51 is H-shaped, a spring 54 is provided inside the insert tube 53, two ends of the spring 54 are respectively fixedly connected to the top end of the inner wall of the insert tube 53 and the bottom end of the inner wall of the cylinder 52, and a ring 55 is fixedly connected to the top end of the cylinder 52.
[0025] According to the above structure, the cross-section of the top plate 51 is H-shaped, which can increase the contact area between the top plate 51 and the top of the lunch box during ejection, reduce the pressure of the top plate 51 on the lunch box, make the bottom of the lunch box evenly stressed, and avoid deformation of the lunch box during ejection. The spring 54 plays the role of pulling down the insert cylinder 53. When the bottom mold 2 starts to rise, the spring 54 pulls the insert cylinder 53, and then pulls the top plate 51 to slide into the interior of the groove 21.
[0026] like Figure 3 As shown, a support structure 6 is symmetrically arranged at the top of the substrate 1, and the support structure 6 includes a U-shaped frame 61 fixedly connected to the top of the substrate 1, the top of the U-shaped frame 61 and the top of the ring 55 are in the same horizontal plane, and an intermediate plate 62 is fixedly connected to the middle of the U-shaped frame 61.
[0027] According to the above structure, the supporting structure 6 plays a role in supporting the bottom mold 2. When the hydraulic column 3 contracts to the shortest state, the bottom end of the bottom mold 2 contacts the top end of the U-shaped frame 61. The U-shaped frame 61 supports the bottom mold 2, and the middle plate 62 can improve the stability of the U-shaped frame 61.
[0028] The working principle of the utility model is as follows: when producing aluminum foil lunch boxes, a stamping original plate is placed inside the bottom die 2, and then the bottom die 2 is driven to rise by the hydraulic column 3. During the rising process, the top die 42 cooperates with the bottom die 2 to extrude the stamping original plate, thereby stamping the lunch box into shape. During stamping, the top plate 51 rises together with the bottom die 2 inside the groove 21. When the stamping is completed, the hydraulic column 3 drives the bottom die 2 to descend, and the top plate 51 descends. When it descends to a certain height, the bottom end of the insert cylinder 53 contacts the bottom end of the inner wall of the cylinder 52, and the insert cylinder 53 supports the top plate 51 to stop descending, and the bottom die 2 continues to descend. At this time, the top plate 51 will automatically eject the lunch box inside the mold cavity of the bottom die 2. When ejecting the lunch box, the bottom die 2 is used for self-determination of ejection by descending stroke. The structure is simple and the lunch box is improved. The ejection efficiency and ejection rate are improved. The reinforcing ribs 44 play the role of reinforcing the mounting plate 41 to prevent the mounting plate 41 from being deformed. The cross-section of the top plate 51 is H-shaped, which can increase the contact area between the top plate 51 and the top of the lunch box during ejection, reduce the pressure of the top plate 51 on the lunch box, make the bottom of the lunch box evenly stressed, and avoid deformation of the lunch box during ejection. The spring 54 plays the role of pulling down the insert cylinder 53. When the bottom mold 2 starts to rise, the spring 54 pulls the insert cylinder 53, and then pulls the top plate 51 to slide into the inside of the groove 21. The supporting structure 6 plays the role of supporting the bottom mold 2. When the hydraulic column 3 shrinks to the shortest state, the bottom end of the bottom mold 2 contacts the top end of the U-shaped frame 61, and the U-shaped frame 61 supports the bottom mold 2. The middle plate 62 can improve the stability of the U-shaped frame 61.
[0029] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.
Claims
1. A lunch box mold, comprising a base plate (1) and a bottom mold (2), characterized in that: The bottom mold (2) is movably arranged above the base plate (1); the four corners of the bottom mold (2) are fixedly connected to hydraulic columns (3); the bottom ends of the hydraulic columns (3) are fixedly connected to the top end of the base plate (1); the top end of the base plate (1) is fixedly connected to a top mold structure (4); the bottom of the mold cavity of the bottom mold (2) is arranged below the top mold structure (4); an ejection structure (5) is arranged at the bottom of the mold cavity of the bottom mold (2); the ejection structure (5) comprises a top plate (51) slidably connected to the inside of the mold cavity of the bottom mold (2); the bottom end of the top plate (51) is fixedly connected to an insert cylinder (53); the insert cylinder (53) passes through the bottom end of the bottom mold (2); the outside of the insert cylinder (53) is movably connected to a cylinder (52); the bottom end of the cylinder (52) is fixedly connected to the top end of the base plate (1).
2. A lunch box mold according to claim 1, characterized in that: The bottom end of the mold cavity of the bottom mold (2) is provided with a groove (21) that matches the top plate (51).
3. A lunch box mold according to claim 2, characterized in that: The top mold structure (4) comprises a mounting plate (41), the bottom end of the mounting plate (41) being fixedly connected to a top mold (42), the top mold (42) being arranged corresponding to the bottom mold (2), support columns (43) being symmetrically arranged on both sides of the bottom end of the mounting plate (41), the bottom ends of the support columns (43) being fixedly connected to the top end of the base plate (1).
4. A lunch box mold according to claim 3, characterized in that: Reinforcing ribs (44) are symmetrically arranged on the top end of the mounting plate (41).
5. A lunch box mold according to claim 4, characterized in that: A spring (54) is arranged inside the insert tube (53), and two ends of the spring (54) are respectively fixedly connected to the top end of the inner wall of the insert tube (53) and the bottom end of the inner wall of the cylinder (52), and a ring (55) is fixedly connected to the top end of the cylinder (52).
6. A lunch box mold according to claim 5, characterized in that: The cross section of the top plate (51) is H-shaped.
7. A lunch box mold according to claim 6, characterized in that: A support structure (6) is symmetrically arranged at the top of the base plate (1), the support structure (6) comprising a U-shaped frame (61) fixedly connected to the top of the base plate (1), the top of the U-shaped frame (61) and the top of the ring (55) being in the same horizontal plane, and an intermediate plate (62) being fixedly connected to the middle of the U-shaped frame (61).