Aluminum-free food cover secondary ejection mold

Abstract

The utility model belongs to the ejection die technical field especially, it is a kind of secondary ejection die of aluminium-free food cover, in view of the existing secondary ejection die of aluminium-free food cover cannot simultaneously link first ejection device and second ejection device, thereby cause the problem of poor stripping effect, present and propose following scheme, it includes: lower die; First ejection device is provided with four, four first ejection device is all set in the bottom of lower die;Worm and gear drive mechanism is provided with two, two worm and gear drive mechanisms are respectively set in the bottom of four first ejection device;Lifting device, lifting device is provided with two, two lifting devices are all set in the top of fixed frame;Second ejection device, second ejection device is respectively set in the top of two lifting devices;Die closing device;The utility model can simultaneously link first ejection device and second ejection device, thereby reach the purpose of improving stripping effect.

Description

Technical Field

[0001] This application relates to the field of ejection mold technology, and in particular to a secondary ejection mold for aluminum-free food lids. Background Technology

[0002] A secondary ejection mold for aluminum-free food lids is an injection molding mold specifically designed for the production of aluminum-free food lids. This mold is designed to address the problem of incomplete or difficult demolding during the injection molding process, where a protruding spoon-fixing part is required at the bottom of the food lid. This spoon-fixing part has a high extension height and thin walls, which can lead to incomplete demolding and demolding difficulties.

[0003] Patent document CN217123868U discloses a secondary ejection mold for aluminum-free food lids, including a frame and a first template and a second template adapted to each other within the frame. An ejection mechanism connected to the first template is provided within the frame. The first template includes several first mold cores and inserts movably disposed outside the first mold cores. A spring block is movably disposed on the first mold core. The ejection mechanism includes a first moving component and a second moving component arranged at different heights. The first moving component is connected to the insert, and the second moving component is connected to the spring block. When the first moving component pushes for the first time, it drives the insert, the second moving component, and the spring block to move. When the first moving component pushes for the second time, it drives the insert to lift the food lid.

[0004] However, existing aluminum-free food cap secondary ejection molds cannot simultaneously link the first ejection device and the second ejection device, resulting in poor demolding effect. To address this, an aluminum-free food cap secondary ejection mold is proposed. Summary of the Invention

[0005] In order to improve the problem that the existing aluminum-free food cap secondary ejection mold cannot simultaneously link the first ejection device and the second ejection device, resulting in poor demolding effect, this application provides an aluminum-free food cap secondary ejection mold.

[0006] The technical solution for the secondary ejection mold of an aluminum-free food lid provided in this application is as follows:

[0007] A secondary ejection mold for aluminum-free food lids includes:

[0008] Lower mold;

[0009] The first ejection device, there are four first ejection devices, and all four first ejection devices are located at the bottom of the lower mold;

[0010] There are two worm gear transmission mechanisms, which are respectively located at the bottom of the four first ejection devices;

[0011] There are two lifting devices, both of which are located on top of the fixed frame.

[0012] The second ejection device is respectively installed on the top of the two lifting devices;

[0013] A mold closing device is located at the top of the lower mold.

[0014] Furthermore, the first ejection device includes a second connecting rod, a second bidirectional lead screw, two second telescopic rods, and ejector pins. A fixed frame is fixedly connected to the bottom of the lower mold. The second bidirectional lead screw is rotatably connected to the fixed frame and threadedly connected to the second connecting rod. The top of the second connecting rod is fixedly connected to the ejector pins. The two ends of the two second telescopic rods are fixedly connected to the ejector pins and the fixed frame, respectively. The second bidirectional lead screw drives the second connecting rod, the two second telescopic rods, and the ejector pins to move. The ejector pins eject the edges of the bowl lid.

[0015] Furthermore, the worm gear transmission mechanism includes a first bidirectional lead screw, a belt, a rotary motor, two worm wheels, and a worm. Two fixed blocks are fixedly connected to the bottom of the fixed frame. The two ends of the worm are rotatably connected to the inner walls of the two fixed blocks, respectively. The rotary motor is mounted on the fixed block on the left side of the worm. Both worm wheels mesh with the worm and are rotatably connected to the bottom of the fixed frame. The two worm wheels are symmetrically distributed around the central axis of the fixed frame. A pulley is fixedly fitted at the bottom of the worm wheel on the left side of the fixed frame. This pulley is connected to the pulley at the bottom of the first bidirectional lead screw via a belt. The top of the pulley at the bottom of the first bidirectional lead screw is fixedly connected to the first bidirectional lead screw. When the rotary motor is started, it drives the worm to rotate, which in turn drives the two worm wheels to rotate, and the two worm wheels drive the two second bidirectional lead screws to rotate.

[0016] Furthermore, the lifting device includes a cylinder, a first connecting rod, and two first telescopic rods. The first bidirectional lead screw is rotatably connected to the lower mold and threadedly connected to the first connecting rod. The cylinder is installed on the top of the first connecting rod. The two ends of the two first telescopic rods are fixedly connected to the lower mold and the cylinder, respectively. By starting the cylinder, the cylinder drives the second ejection device to move to the top of the bowl lid body.

[0017] Furthermore, the second ejection device includes a telescopic block, an air pump, and an air plug. The output shaft of the cylinder is fixedly connected to the telescopic block, the air pump is mounted on the telescopic block, and the output port of the air pump is fixedly connected to the air plug. When the air pump is started, it generates negative pressure inside the air plug, which is used to adsorb the protrusion of the bowl lid.

[0018] Furthermore, the mold closing device includes an upper mold, a push rod motor, and a support frame. The support frame is fixedly connected to the lower mold, the push rod motor is mounted on the support frame, and the output shaft of the push rod motor is fixedly connected to the upper mold. The upper mold and the lower mold are slidably connected. When the push rod motor is started, the push rod motor drives the upper mold to move, so that the upper mold seals and closes the lower mold. Then, the raw material is injected between the upper mold and the lower mold.

[0019] In summary, this application includes at least one of the following beneficial technical effects:

[0020] 1. By activating two cylinders, the two cylinders respectively drive two telescopic blocks, two air pumps and two air plugs to move to the top of the bowl lid body. Activating the two air pumps creates negative pressure inside the two air plugs, and the negative pressure is used to perform adsorption on the protruding parts of the bowl lid.

[0021] 2. The two second bidirectional lead screws drive the two second connecting rods, the two first telescopic rods, and the two second ejection devices to move. The second ejection devices drive the center position of the bowl lid to move. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure in Embodiment 1 of this application;

[0023] Figure 2 This is a schematic diagram of the internal structure in Embodiment 1 of this application;

[0024] Figure 3 This is a schematic diagram of the fixed frame, four first ejection devices, two second ejection devices, two worm gear transmission mechanisms and two belt transmission mechanisms in Embodiment 1 of this application;

[0025] Figure 4 This is a schematic diagram of the connection structure of the four first ejection devices, two second ejection devices, two worm gear transmission mechanisms, and two belt transmission mechanisms in Embodiment 1 of this application.

[0026] Reference numerals: 1. Upper mold; 2. Push rod motor; 3. Support frame; 4. Lower mold; 5. Belt; 6. Pulley; 7. Fixed frame; 8. Ejector pin; 9. Cylinder; 10. Telescopic block; 11. Air pump; 12. Air plug; 13. First telescopic rod; 14. First connecting rod; 15. First double-acting lead screw; 16. Second connecting rod; 17. Second double-acting lead screw; 18. Second telescopic rod; 19. Rotating motor; 20. Worm gear; 21. Worm wheel; 22. Fixed block. Detailed Implementation Example 1

[0027] The following is in conjunction with the appendix Figures 1-4 The first embodiment of this application will be described in further detail.

[0028] A secondary ejection mold for aluminum-free food lids includes:

[0029] Lower mold 4;

[0030] The first ejection device, there are four first ejection devices, and all four first ejection devices are located at the bottom of the lower mold 4;

[0031] There are two worm gear transmission mechanisms, which are respectively located at the bottom of the four first ejection devices;

[0032] There are two lifting devices, both of which are located on the top of the fixed frame 7.

[0033] The second ejection device is respectively installed on the top of the two lifting devices;

[0034] A mold closing device is located on the top of the lower mold 4.

[0035] Reference Figures 2-4 The first ejection device includes a second connecting rod 16, a second bidirectional lead screw 17, two second telescopic rods 18, and an ejector pin 8. A fixed frame 7 is fixedly connected to the bottom of the lower mold 4. The second bidirectional lead screw 17 is rotatably connected to the fixed frame 7. The second bidirectional lead screw 17 is threadedly connected to the second connecting rod 16. The top of the second connecting rod 16 is fixedly connected to the ejector pin 8. The two ends of the two second telescopic rods 18 are fixedly connected to the ejector pin 8 and the fixed frame 7, respectively. The second bidirectional lead screw 17 drives the second connecting rod 16, the two second telescopic rods 18, and the ejector pin 8 to move. The ejector pin 8 ejects the edge of the bowl lid.

[0036] The worm gear transmission mechanism includes a first bidirectional lead screw 15, a belt 5, a rotating motor 19, two worm wheels 21, and a worm 20. The bottom of the fixed frame 7 is fixedly connected to two fixed blocks 22. The two ends of the worm 20 are rotatably connected to the inner walls of the two fixed blocks 22 respectively. The rotating motor 19 is installed on the fixed block 22 on the left side of the worm 20. Both worm wheels 21 mesh with the worm 20. The two worm wheels 21 are rotatably connected to the bottom of the fixed frame 7. The two worm wheels 21 are symmetrically distributed around the central axis of the fixed frame 7. A pulley 6 is fixedly sleeved at the bottom of the worm wheel 21 on the left side of the fixed frame 7. The pulley 6 is connected to the pulley 6 at the bottom of the first bidirectional lead screw 15 through the belt 5. The top of the pulley 6 at the bottom of the first bidirectional lead screw 15 is fixedly connected to the first bidirectional lead screw 15.

[0037] The lifting device includes a cylinder 9, a first connecting rod 14 and two first telescopic rods 13. The first bidirectional lead screw 15 is rotatably connected to the lower mold 4 and threadedly connected to the first connecting rod 14. The cylinder 9 is installed on the top of the first connecting rod 14. The two ends of the two first telescopic rods 13 are fixedly connected to the lower mold 4 and the cylinder 9, respectively. By starting the cylinder 9, the cylinder 9 drives the second ejection device to move to the top of the bowl lid.

[0038] The second ejection device includes a telescopic block 10, an air pump 11, and an air plug 12. The output shaft of the cylinder 9 is fixedly connected to the telescopic block 10. The air pump 11 is mounted on the telescopic block 10. The output port of the air pump 11 is fixedly connected to the air plug 12. When the two air pumps are started, they generate negative pressure inside the two air plugs. The negative pressure is used to adsorb the protrusion of the bowl lid. When the air pump 11 is started, it generates negative pressure inside the air plug 12. The negative pressure is used to adsorb the protrusion of the bowl lid.

[0039] The mold closing device includes an upper mold 1, a push rod motor 2, and a support frame 3. The support frame 3 is fixedly connected to the lower mold 4. The push rod motor 2 is mounted on the support frame 3. The output shaft of the push rod motor 2 is fixedly connected to the upper mold 1. The upper mold 1 and the lower mold 4 are slidably connected. When the push rod motor 2 is started, the push rod motor 2 drives the upper mold 1 to move, so that the upper mold 1 seals and closes the lower mold 4. Then, the raw material is injected between the upper mold 1 and the lower mold 4.

[0040] The implementation principle of the aluminum-free food lid secondary ejection mold in this application embodiment is as follows: During use, the push rod motor 2 is started, driving the upper mold 1 to move and seal the lower mold 4. Then, raw material is injected between the upper mold 1 and the lower mold 4. After cooling and molding, the push rod motor 2 is started again to separate the upper mold 1 and the lower mold 4. At this time, two cylinders 9 are started, driving two telescopic blocks 10, two air pumps 11, and two air plugs 12 to move to the top of the lid. The two air pumps 11 are started, creating negative pressure inside the two air plugs 12. This negative pressure then adsorbs the protrusions of the lid. Then, two rotary motors 19 are started, driving two worm gears 20 to rotate. The worm gear 20 drives four worm wheels 21 to rotate, which in turn drives four second double-acting screws 17 to rotate. The four second double-acting screws 17 then drive four second connecting rods 16, eight second telescopic rods 18, and four ejector pins 8 to move. The four ejector pins 8 eject the edges of the bowl lid. Simultaneously, two of the four worm wheels 21 drive two of the four pulleys 6 to rotate. These two pulleys 6 drive the other two pulleys 6 to rotate via two belts 5. The other two pulleys 6 then drive two first double-acting screws 15 to rotate. These two first double-acting screws 15 then drive two first connecting rods 14, two first telescopic rods 13, and two second ejector devices to move. The second ejector devices move the center position of the bowl lid. Example 2

[0041] The difference between this embodiment and Embodiment 1 is that a detector is fixedly connected to the lower mold 1 to monitor the ejection of the mold.

[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A secondary ejection mold for aluminum-free food lids, characterized in that: include: Lower mold (4); The first ejection device, there are four first ejection devices, and all four first ejection devices are located at the bottom of the lower mold (4); There are two worm gear transmission mechanisms, which are respectively located at the bottom of the four first ejection devices; The lifting device has two parts, both of which are located on the top of the fixed frame (7); The second ejection device is respectively installed on the top of the two lifting devices; Mold closing device, the mold closing device is set on the top of the lower mold (4).

2. The aluminum-free food lid secondary ejection mold according to claim 1, characterized in that: The first ejection device includes a second connecting rod (16), a second bidirectional lead screw (17), two second telescopic rods (18) and an ejector pin (8). A fixed frame (7) is fixedly connected to the bottom of the lower mold (4). The second bidirectional lead screw (17) is rotatably connected to the fixed frame (7). The second bidirectional lead screw (17) is threadedly connected to the second connecting rod (16). The top of the second connecting rod (16) is fixedly connected to the ejector pin (8). The two ends of the two second telescopic rods (18) are fixedly connected to the ejector pin (8) and the fixed frame (7) respectively.

3. The aluminum-free food lid secondary ejection mold according to claim 2, characterized in that: The worm gear transmission mechanism includes a first bidirectional lead screw (15), a belt (5), a rotating motor (19), two worm wheels (21), and a worm (20). Two fixed blocks (22) are fixedly connected to the bottom of the fixed frame (7). The two ends of the worm (20) are rotatably connected to the inner walls of the two fixed blocks (22). The rotating motor (19) is mounted on the fixed block (22) on the left side of the worm (20). Both worm wheels (21) mesh with the worm (20). The wheel (21) is rotatably connected to the bottom of the fixed frame (7). The two worm wheels (21) are symmetrically distributed around the central axis of the fixed frame (7). The bottom of the worm wheel (21) on the left side of the fixed frame (7) is fixedly fitted with a pulley (6). The pulley (6) is connected to the pulley (6) at the bottom of the first bidirectional screw (15) via a belt (5). The top of the pulley (6) at the bottom of the first bidirectional screw (15) is fixedly connected to the first bidirectional screw (15).

4. The aluminum-free food lid secondary ejection mold according to claim 3, characterized in that: The lifting device includes a cylinder (9), a first connecting rod (14) and two first telescopic rods (13). The first bidirectional lead screw (15) is rotatably connected to the lower mold (4). The first bidirectional lead screw (15) is threadedly connected to the first connecting rod (14). The cylinder (9) is installed on the top of the first connecting rod (14). The two ends of the two first telescopic rods (13) are fixedly connected to the lower mold (4) and the cylinder (9) respectively.

5. The aluminum-free food lid secondary ejection mold according to claim 4, characterized in that: The second ejection device includes a telescopic block (10), an air pump (11) and an air plug (12). The output shaft of the cylinder (9) is fixedly connected to the telescopic block (10). The air pump (11) is installed on the telescopic block (10), and the output port of the air pump (11) is fixedly connected to the air plug (12).

6. The aluminum-free food lid secondary ejection mold according to claim 5, characterized in that: The mold closing device includes an upper mold (1), a push rod motor (2) and a support frame (3). The support frame (3) is fixedly connected to the lower mold (4). The push rod motor (2) is mounted on the support frame (3). The output shaft of the push rod motor (2) is fixedly connected to the upper mold (1). The upper mold (1) and the lower mold (4) are slidably connected.

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