Food-grade mold for bottle cap production

Abstract

The utility model relates to the technical field of injection molds, in particular to a food-grade mold for bottle cap production, which comprises a female mold plate, a male mold plate, a movable rod and an ejector pin, the front end face of the male mold plate is fixedly provided with a first electric telescopic rod, the upper end of the first electric telescopic rod is fixedly connected with a mounting plate, the top of the mounting plate is provided with a mounting groove, and the movable rod is arranged in the mounting groove. And a sliding block is arranged in the mounting groove in a sliding manner through a guide device, a limiting device and a clamping driving device. According to the device, a bottle cap injection molding machine adhered to the top of the ejector pin can be separated through a pair of semicircular ring clamping blocks after injection molding and mold opening; and the pair of semicircular clamping blocks can be automatically opened and combined to wrap the ejector pin without external force in the backward moving process, and structures such as two groups of first electric telescopic rods do not need to be arranged on the front side and the rear side, so that the structure is simpler.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to a food-grade mold for bottle cap production. Background Technology

[0002] In the production of beverages as food, food-grade plastic bottles are used for filling, and the production of bottle caps requires injection molding using food-grade molds. The injection molding of bottle caps involves six steps: controlling injection pressure, injection time, injection temperature, holding pressure, cooling, and demolding. The injection temperature stage involves controlling the raw material in the injection molding machine barrel to a suitable processing temperature. However, malfunctions during this process can cause the raw material temperature to be too high or too low, resulting in the material sticking to the ejector pins of the mold. An existing bottle cap injection mold (application number CN202222970561.7) includes a male mold plate and a female mold plate, with a movable rod movably installed between the male and female mold plates… allowing a clamping block to clamp the bottle material stuck to the ejector pins. Then, by driving an electric push rod, a slide rail moves up and down, allowing the material to detach from the ejector pins, which is very convenient. However, this device requires two sets of electric push rods and clamping blocks on the front and rear sides for clamping and detachment, making the structure not simple enough. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies that require two sets of electric push rods and clamping blocks on the front and rear sides for clamping and detachment, resulting in an unsimplistic structure. This invention proposes a food-grade mold for bottle cap production.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] Design a food-grade mold for bottle cap production, including a female mold, a male mold, a movable rod, and an ejector pin. The front end of the male mold is fixedly provided with a first electric telescopic rod, and the upper end of the first electric telescopic rod is fixedly connected to a mounting plate. The top of the mounting plate is provided with a mounting groove, and a sliding block is slidably provided in the mounting groove through a guide device, a limiting device, and a clamping drive device. The rear end of the sliding block is fixedly connected to a U-shaped frame. Inside the U-shaped frame, a pair of rotating shafts are rotatably provided through a clamping device, and the upper and lower ends of the rotating shafts pass through and are rotatably connected to the U-shaped frame. A rotating plate is fixedly provided on the outer wall of the rotating shaft, and a semi-circular ring clamping block sleeved on the ejector pin is integrally formed at the rear end of the rotating plate. An automatic opening device is provided at the rear end of the pair of semi-circular ring clamping blocks.

[0006] Preferably, the clamping drive device includes a second electric telescopic rod, the front end face of the sliding block is provided with a through hole, and the second electric telescopic rod is slidably disposed in the through hole, and the front and rear ends of the second electric telescopic rod are respectively fixedly connected to the mounting plate and the U-shaped frame.

[0007] Preferably, the automatic opening device includes guide plates, and the rear ends of the pair of semi-circular ring clamping blocks are integrally formed with guide plates, and the rear ends of the pair of guide plates are expanded outward into a V shape in a direction away from each other.

[0008] Preferably, each of the two shafts is fixedly connected to a gear at its lower end, and the two gears mesh with each other.

[0009] Preferably, the clamping device includes a torsion spring and a retaining ring. The upper ends of the pair of rotating shafts are integrally formed with baffles. The outer walls of the pair of rotating shafts are respectively fitted with torsion springs. The top of the U-shaped frame is fixed with a pair of retaining rings respectively fitted on the pair of rotating shafts. The two ends of the torsion springs are respectively fixedly connected to the baffles and the retaining rings.

[0010] Preferably, the guiding device includes a guide groove and a guide rail. The U-shaped frame and the sliding block are provided with guide grooves on both sides, and the guide rail is slidably arranged in the guide groove. The ends of the pair of guide rails that are away from each other are fixedly connected to the mounting plate.

[0011] Preferably, the limiting device includes a limiting block and a limiting groove. The bottom of the mounting plate is provided with a limiting groove that is connected to the mounting groove at the top, and the limiting block is slidably provided in the limiting groove. The top of the limiting block is fixedly connected to a sliding block.

[0012] The present invention proposes a food-grade mold for bottle cap production, which has the following advantages: the device can not only detach the bottle caps adhering to the top of the ejector pins from the injection molding machine after the injection molding is opened by a pair of semi-circular ring clamping blocks, but also automatically open and close to cover the ejector pins without external force during the backward movement of the pair of semi-circular ring clamping blocks, eliminating the need for structures such as two sets of first electric telescopic rods on the front and rear sides, making the structure simpler. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a food-grade mold for bottle cap production proposed in this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of a food-grade mold for bottle cap production proposed in this utility model.

[0015] Figure 3 This is an enlarged view of area A of a food-grade mold for bottle cap production proposed in this utility model;

[0016] Figure 4This is a schematic diagram of a limiting device for a food-grade mold used in bottle cap production, as proposed in this utility model.

[0017] Figure 5 This is a schematic diagram of the bottom structure of a food-grade mold for bottle cap production proposed in this utility model.

[0018] In the diagram: 1. First electric telescopic rod; 2. Mounting plate; 3. Sliding block; 4. Semi-circular ring clamping block; 5. Female template; 6. Male template; 7. Movable rod; 8. Guide plate; 9. Rotating plate; 10. Rotating shaft; 11. Torsion spring; 12. Fixing ring; 13. U-shaped frame; 14. Guide groove; 15. Guide rail; 16. Second electric telescopic rod; 17. Limiting block; 18. Ejector pin. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Reference Figure 1-5 A food-grade mold for bottle cap production includes a female mold 5, a male mold 6, a movable rod 7, and an ejector pin 18. A first electric telescopic rod 1 is fixedly mounted on the front end of the male mold 6, and an mounting plate 2 is fixedly connected to the upper end of the first electric telescopic rod 1. An mounting groove is provided on the top of the mounting plate 2, and a sliding block 3 is slidably mounted in the mounting groove through a guide device, a limiting device, and a clamping drive device. A U-shaped frame 13 is fixedly connected to the rear end of the sliding block 3. A pair of rotating shafts 10 are rotatably mounted inside the U-shaped frame 13 through a clamping device, and both the upper and lower ends of the rotating shafts 10 pass through and are rotatably connected to the U-shaped frame 13. A rotating plate 9 is fixedly mounted on the outer wall of the rotating shaft 10, and a semi-circular ring clamping block 4 sleeved on the ejector pin 18 is integrally formed at the rear end of the rotating plate 9. An automatic opening device is provided at the rear end of the pair of semi-circular ring clamping blocks 4.

[0021] Reference Figure 2 In order to drive the sliding block 3 to move back and forth and thus control the movement of the semi-circular ring clamping block 4, the clamping drive device includes a second electric telescopic rod 16. The front end face of the sliding block 3 is provided with a through hole, and the second electric telescopic rod 16 is slidably arranged in the through hole. The front and rear ends of the second electric telescopic rod 16 are respectively fixedly connected to the mounting plate 2 and the U-shaped frame 13.

[0022] Reference Figure 2 In order to enable the semi-circular ring clamping block 4 to automatically open when it encounters the ejector pin 18, the automatic opening device includes a guide plate 8. The rear ends of the pair of semi-circular ring clamping blocks 4 are integrally formed with guide plates 8, and the rear ends of the pair of guide plates 8 are expanded outward into a V shape in the direction away from each other.

[0023] In order to enable the two semi-circular ring clamping blocks 4 to rotate synchronously, a pair of rotating shafts 10 are fixedly connected to the lower ends of each shaft, and the two gears mesh with each other.

[0024] Reference Figure 2 In order to enable the pair of semi-circular ring clamping blocks 4 to automatically merge and cover the ejector pin 18, the clamping device includes a torsion spring 11 and a fixing ring 12. The upper ends of the pair of rotating shafts 10 are integrally formed with baffles. The outer walls of the pair of rotating shafts 10 are respectively fitted with torsion springs 11. The top of the U-shaped frame 13 is fixed with a pair of fixing rings 12 respectively fitted on the pair of rotating shafts 10. The two ends of the torsion spring 11 are respectively fixedly connected to the baffles and the fixing rings 12.

[0025] Reference Figure 1-5 In order to make the sliding block 3 slide only back and forth, the guiding device includes a guide groove 14 and a guide rail 15. The U-shaped frame 13 and the sliding block 3 are only provided with guide grooves 14 on both sides, and the guide rail 15 is slidably provided in the guide groove 14. The ends of the pair of guide rails 15 that are far away from each other are fixedly connected to the mounting plate 2.

[0026] Reference Figure 1-5 To prevent the sliding block 3 from falling off, the limiting device includes a limiting block 17 and a limiting groove. The bottom of the mounting plate 2 is provided with a limiting groove that is connected to the mounting groove at the top, and the limiting block 17 is slidably provided in the limiting groove. The top of the limiting block 17 is fixedly connected to the sliding block 3.

[0027] Working principle: After the mold is opened and the bottle cap is ejected by the ejector pin 18, the sliding block 3 and the semi-circular ring clamping block 4 are moved backward by the second electric telescopic rod 16 until a pair of guide plates 8 abut against the ejector pin 18. The semi-circular ring clamping block 4 continues to move backward, so that the pair of guide plates 8, under the action of the ejector pin 18, drive the pair of semi-circular ring clamping blocks 4 to open synchronously under the action of a pair of gears and accommodate the ejector pin 18. The torsion spring 11 causes the two semi-circular ring clamping blocks 4 to merge and cover the ejector pin 18. The first electric telescopic rod 1 drives the two semi-circular ring clamping blocks 4 to move upward and detach the bottle cap that is attached to the top of the ejector pin 18 from the injection molding machine.

[0028] This device can not only detach the bottle caps attached to the top of the ejector pins 18 from the injection molding machine after the injection mold is opened by a pair of semi-circular ring clamping blocks 4, but also automatically open and close to cover the ejector pins 18 without external force during the backward movement of the pair of semi-circular ring clamping blocks 4. There is no need to set two sets of first electric telescopic rods 1 on the front and rear sides, etc., making the structure simpler.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A food grade mould for bottle cap production comprising a female mould plate (5), a male mould plate (6), a movable rod (7), an ejection pin (18), characterized in that, The front end surface of the male die (6) is fixedly provided with a first electric telescopic rod (1), and the upper end of the first electric telescopic rod (1) is fixedly connected with a mounting plate (2), the top of the mounting plate (2) is provided with a mounting groove, and the sliding block (3) is slidably arranged in the mounting groove through a guide device, a limiting device and a clamping driving device, the rear end of the sliding block (3) is fixedly connected with a U-shaped frame (13), a pair of rotating shafts (10) are rotatably arranged in the U-shaped frame (13) through a clamping device, and the upper and lower ends of the rotating shaft (10) are rotatably connected with the U-shaped frame (13), the outer wall of the rotating shaft (10) is fixedly provided with a rotating plate (9), and the rear end of the rotating plate (9) is integrally formed with a semicircular clamping block (4) sleeved on the ejection pin (18), and the rear ends of the pair of semicircular clamping blocks (4) are provided with an automatic opening device.

2. A food grade mold for bottle cap production as claimed in claim 1 wherein, The clamping driving device comprises a second electric telescopic rod (16), a through hole is formed in the front end surface of the sliding block (3), and the second electric telescopic rod (16) is slidably arranged in the through hole, and the front and rear ends of the second electric telescopic rod (16) are fixedly connected with the mounting plate (2) and the U-shaped frame (13) respectively.

3. A food grade mold for bottle cap production as claimed in claim 1 wherein, The automatic opening device comprises a guide plate (8), the rear end of each of the pair of semicircular clamping blocks (4) is integrally provided with a guide plate (8), and the rear ends of the pair of guide plates (8) are outwardly expanded into a V shape away from each other.

4. A food grade mold for bottle cap production as claimed in claim 1 wherein, The lower ends of the pair of rotating shafts (10) are fixedly connected with gears, and the two gears are meshed with each other.

5. A food grade mold for bottle cap production as claimed in claim 1 wherein, The clamping device comprises a torsional spring (11) and a fixed ring (12), the upper end of each of the pair of rotating shafts (10) is integrally provided with a baffle, the outer wall of each of the pair of rotating shafts (10) is sleeved with a torsional spring (11), the top of the U-shaped frame (13) is fixedly provided with a pair of fixed rings (12) sleeved on the pair of rotating shafts (10) respectively, and the two ends of the torsional spring (11) are fixedly connected with the baffle and the fixed ring (12) respectively.

6. A food grade mold for bottle cap production as claimed in claim 1 wherein, The guide device comprises a guide groove (14) and a guide rail (15), the two sides of the U-shaped frame (13) and the sliding block (3) are only provided with the guide groove (14), and the guide rail (15) is slidably arranged in the guide groove (14), and the ends of the pair of guide rails (15) away from each other are fixedly connected with the mounting plate (2).

7. A food grade mold for bottle cap production as claimed in claim 1 wherein, The limiting device comprises a limiting block (17) and a limiting groove, the bottom of the mounting plate (2) is provided with a limiting groove in communication with the mounting groove at the upper end, and the limiting block (17) is slidably arranged in the limiting groove, and the top of the limiting block (17) is fixedly connected with the sliding block (3).

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