CN209257460U - A blister forming mechanism for a blister forming machine - Google Patents

Abstract

The utility model discloses a blister forming mechanism for a blister forming machine, which comprises a punch and a die, the punch is fixedly connected to a punch base, the punch base is fixedly connected to a bottom plate column, and the die is fixedly connected to a On the die seat, the die is movably connected to the guide rod, and the guide rod is fixedly connected to the punch. A driving mechanism is installed on the upper side of the die seat to drive it to move. The drive mechanism and the bottom plate column are installed on the bracket. A thin conveyor belt is installed between the die and the die. The thin conveyor belt is provided with a forming through hole. The bracket is a horizontal U-shaped structure. A return spring is sleeved on the guide rod. The two ends of the return spring are respectively against the punch and the die. The utility model can quickly realize the softened PVC film blister forming through the concave-convex mold, the driving motive and the thin conveyor belt. The cost is reduced, the molding effect is good, and the scrap rate is greatly reduced.

Description

A blister forming mechanism for a blister forming machine

technical field

The utility model relates to a blister forming mechanism for a blister forming machine, which belongs to the technical field of blister forming machines for capsule medicines.

Background technique

At present, the blister forming machine is widely used in the packaging production of various capsules, tablets and other products. The forming process is usually to preheat the PVC film first, and then form it by compression molding or blister forming. Compression molding is to use compressed air to blow and press the heated and softened sheet to the mold to make it cling to the four walls of the mold. The molding speed is relatively fast, so the heated PVC film brings more heat into the molding device, and it is easy to soften and tighten. The sticky mold is not easy to fall off; the vacuum forming method is used to absorb the softened sheet on the four walls of the mold to form a blister cavity. Due to the limited suction force generated by the vacuum and the limited angle of the blister leaving the roller after forming, it is only suitable for shallow blisters and thinner materials. Regardless of compression molding or blister molding, good air tightness is required, which increases the complexity and cost of the overall processing of the equipment. Generally speaking, the existing blister forming device has a complex structure, and the forming effect is not good, unqualified blisters are prone to appear, and the forming rate is low.

Contents of the invention

The technical problem to be solved by the utility model is: to provide a blister forming mechanism for a blister forming machine to solve the above-mentioned problems in the prior art.

The technical scheme adopted by the utility model is: a blister forming mechanism for a blister forming machine, including a punch and a die, the punch is fixedly connected to the punch seat, the punch seat is fixedly connected to the bottom plate column, and the concave The die is fixedly connected to the die base, the die is movably connected to the guide rod, the guide rod is fixedly connected to the punch, and the upper side of the die base is equipped with a driving mechanism to drive it to move. The driving mechanism and the bottom plate column are installed on the bracket On the top, a thin conveyor belt is installed between the punch and the die, the thin conveyor belt is provided with a forming through hole, the bracket is a horizontal U-shaped structure, and a return spring is sleeved on the guide rod, and the two ends of the return spring are respectively against the punch and on the die.

Preferably, the lower end of the above-mentioned die is provided with a spring ear seat, and the spring ear seat is connected to a spring push plate through a spring, and the through hole on the surface of the spring push plate is consistent with the size of the hole on the surface of the die.

Preferably, a guide pin is sleeved inside the above-mentioned spring, the upper end of the guide pin is fixedly connected to the spring ear seat, and the lower end of the guide pin is movably penetrated into the spring push plate.

Preferably, the above-mentioned male mold and the concave mold are provided with cooling chambers, and the cooling chambers are connected with water inlet pipes and water outlet pipes.

Preferably, the above-mentioned drive mechanism includes a roller, a cam and a drive motor, the roller is rotatably connected to the roller frame, the roller frame is fixedly connected to the die base, the cam is fixedly connected to the output shaft of the drive motor and the axis of rotation is the same as that of the roller The axes are parallel, the surface of the roller is always in contact with the surface of the cam, and after the cam rotates, the punch and the die can be brought into contact.

Beneficial effects of the utility model: compared with the prior art, the utility model has the following effects:

(1) The utility model can quickly realize the softened PVC film blister forming through the concave-convex mold, the driving motive and the thin conveyor belt. The cross-sectional shape of the concave-convex mold is the same, and the driving mechanism is used for extrusion molding without considering the air tightness problem , equipment processing is simplified, cost is reduced, molding effect is good, and scrap rate is greatly reduced;

(2) The spring push plate is connected to the spring push plate by the spring ear seat, which is convenient for the replacement of the spring push plate and the die. The installed spring push plate has the same shape as the lower surface of the die. When the spring is in a compressed state, the spring push plate and the die In close contact, it becomes a part of the die. When the spring is in a non-compressed state, the spring separator will cause the formed blister to fall off under the action of the elastic force, making the formed blister fall off more conveniently. Guide pins are set to ensure that the spring push plate is in contact with the die. The correspondence of the upper hole improves the positioning accuracy;

(3) Cooling chambers are set in the concave and convex molds to take away the heat brought by the heat softening process of the PVC film and the heat generated by the device, so that the formed blister board can be cooled and hardened rapidly to avoid adhesion with the concave and convex molds, so as to fall off and cool down The water is connected to the water tank and the pump through the water inlet and outlet pipes, which can be recycled repeatedly, which reduces energy consumption, reduces the complexity of the equipment and has good cooling effect, simple and convenient manufacturing and maintenance, and low cost;

(4) By driving the motor to control the cam with the function of gap movement, and pushing the rotatable roller, the up and down movement of the movable part composed of the die and the die base is realized, and the air pressure is replaced by mechanical pressure, which avoids the airtightness of the device. Insufficient air pressure and other problems caused by poor performance, so that the compression molding is uniform; the cam and the thin conveyor belt are controlled by the motor for intermittent movement, and the rotation period of the cam is the same as the movement time interval of the thin conveyor belt, so as to ensure that the formed blisters that fall off can be removed in time. The conveyor belt is sent to the finished product area to realize the continuous processing of blisters.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a schematic view of the structure of the thin belt of the present invention;

Fig. 3 is a left view structural representation of the utility model;

FIG. 4 is a schematic diagram of the enlarged structure of part A of FIG. 3 .

In the figure, 1-base plate column; 2-punch seat; 3-punch; 4-thin conveyor belt; 5-spring push plate; 6-spring; 7-spring ear seat; 8-guide rod; 9-die; 10-die seat; 11-roller device; 12-cam; 13-return spring; 14-bracket; 15-forming through hole; 16-guide pin; 17-inlet pipe; 18-outlet pipe; 19-drive motor; 20-roller frame; 21-motor frame.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is further introduced.

Embodiment 1: As shown in Figures 1-4, a blister forming mechanism for a blister forming machine includes a punch 3 and a die 9, the punch 3 is fixedly connected to the punch seat 2, and the punch seat 2. Fixedly connected to the base plate column 1, the die 9 is fixedly connected to the die holder 10, the die 9 is movably connected to the guide rod 8, the guide rod 8 is fixedly connected to the punch 3, and the upper side of the die holder 10 is installed There is a driving mechanism to drive its movement, the driving mechanism and the bottom plate column 1 are installed on the bracket 14, a thin conveyor belt 4 is installed between the punch 3 and the concave mold 9, the thin conveyor belt 4 is provided with a forming through hole 15, and the bracket 14 is a horizontal U-shaped structure, the guide rod 8 is sleeved with a return spring 13, and the two ends of the return spring 13 are respectively against the punch 3 and the die 9, and the upper end of the punch 3 is provided with a convex strip in the longitudinal section of the capsule, and the concave The lower end surface of the die 9 is provided with grooves matching the convex strips. The convex strips and concave strips extrude the film to realize blister forming. The size of the grooves is 0.5mm larger than the convex strips. Coating of viscous material.

Preferably, the lower end of the above-mentioned die 9 is provided with a spring ear seat 7, and the spring ear seat 7 is connected with a spring push plate 5 through a spring 6, and the through hole on the surface of the spring push plate 5 is consistent with the size of the hole on the surface of the die 9.

Preferably, the above-mentioned spring 6 is sleeved with a guide pin 16, the upper end of the guide pin 16 is fixedly connected to the spring ear seat 7, and the lower end movably penetrates into the spring push plate 5, so as to facilitate the automatic shedding of the product after the blister is formed.

Preferably, the above-mentioned male mold 3 and the concave mold 9 are all provided with a cooling cavity, the cooling cavity is connected with a water inlet pipe 17 and a water outlet pipe 18, the water inlet pipe is connected to the water tank through a water pump and a spiral telescopic pipe, and the water outlet pipe is connected to the water tank through a spiral telescopic pipe. The water tank, the water inlet pipe 17 and the water outlet pipe 18 are all provided with quick connectors.

Preferably, the above-mentioned drive mechanism includes a roller 11, a cam 12 and a drive motor 19, the roller 11 is rotatably connected to the roller frame 20, the roller frame 20 is fixedly connected to the die base 10, and the cam 12 is fixedly connected to the drive motor 19. On the output shaft and the axis of rotation is parallel to the axis of the roller 11, the driving motor 19 is fixedly connected on the support 14 by the motor frame 2, the surface of the roller 11 is always in contact with the surface of the cam 12 and the cam 12 can rotate the punch 3 and the die 9-phase contact, the cam and the thin conveyor belt are controlled by the motor for intermittent movement, and the rotation period of the cam is the same as the movement time interval of the thin conveyor belt. The intermittent movement of the cam drives the roller to squeeze the die seat to move, thereby realizing the up and down movement of the movable part composed of the die and the die seat.

Both the belt drive motor of the thin conveyor belt and the drive motor of the drive mechanism are connected to the controller, and the controller is connected to the water pump, which can realize automatic blister forming and greatly improve the forming efficiency.

Working principle: A blister forming mechanism used in a blister forming machine. When in use, the control drive motor is powered on, and the cam rotates to drive the movable part composed of the die and the die holder to move up and down. When the movable part When moving downwards, mechanical pressure is provided, and the heat-softened PVC film is formed in the concave-convex mold under the pressure. At the same time, the cooling water enters the cooling cavity from the left side of the mold and flows out from the right side of the mold, cooling the formed blister in time to make it Hardening, with the rotation of the cam, when the movable part moves upward, the compressed spring installed on the spring ear seat of the die will play a role, and the generated elastic force will make the formed and cooled blister plate fall off through the spring push plate, and the fallen blister will fall off. The cover plate falls directly on the intermittently moving conveyor belt, and is sent to the finished product area through the conveyor belt. At the same time, the next piece of PVC film that needs to be formed and processed is sent, and the above process is repeated. Such a periodic cycle realizes continuous processing.

The above is only a specific embodiment of the present utility model, but the scope of protection of the present utility model is not limited thereto. Anyone familiar with the technical field can easily think of changes or changes within the technical scope disclosed by the utility model Replacement should be covered within the protection scope of the present utility model, therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (5)

1. A blister forming mechanism for a blister forming machine, characterized in that it includes a punch (3) and a die (9), the punch (3) is fixedly connected to the punch seat (2), and the punch The seat (2) is fixedly connected to the bottom plate column (1), the die (9) is fixedly connected to the die seat (10), the die (9) is movably connected to the guide rod (8), and the guide rod (8) Fixedly connected to the punch (3), the upper side of the die seat (10) is equipped with a drive mechanism to drive its movement, the drive mechanism and the bottom plate column (1) are installed on the bracket (14), the punch (3) and A thin conveyor belt (4) is installed between the dies (9), the thin conveyor belt (4) is provided with a forming through hole (15), the bracket (14) is a horizontal U-shaped structure, and the guide rod (8) is sleeved with a reset The spring (13), the two ends of the return spring (13) respectively lean against the punch (3) and the die (9). 2. A blister forming mechanism for a blister forming machine according to claim 1, characterized in that: the lower end of the die (9) is provided with a spring ear seat (7), and the spring ear seat (7) passes through the spring (6) A spring push plate (5) is connected, and the through hole on the surface of the spring push plate (5) is consistent with the size of the hole on the surface of the die (9). 3. A blister forming mechanism for a blister forming machine according to claim 2, characterized in that: a guide pin (16) is sleeved inside the spring (6), and the upper end of the guide pin (16) is fixedly connected to the The upper and lower ends of the spring ear seat (7) are movably inserted into the spring push plate (5). 4. A blister forming mechanism for a blister forming machine according to claim 1, characterized in that: both the punch (3) and the die (9) are provided with a cooling cavity, and the cooling cavity is connected with an inlet Water pipe (17) and outlet pipe (18). 5. A blister forming mechanism for a blister forming machine according to claim 1, characterized in that: the driving mechanism includes a roller (11), a cam (12) and a driving motor (19), and the roller (11) Rotatably connected on the roller frame (20), the roller frame (20) is fixedly connected on the die base (10), the cam (12) is fixedly connected on the output shaft of the drive motor (19) and the axis of rotation is in line with the roller ( The axes of 11) are parallel, the surface of the roller (11) is always in contact with the surface of the cam (12) and the cam (12) can contact the punch (3) and the die (9) after rotation.