A die head assembly for casting equipment for multi-layer structure protective film

Abstract

The present application discloses a die assembly of a casting device for a multi-layer structure protective film, which relates to the technical field of die assembly of a casting machine, and comprises a fixing frame, wherein two groups of fixing frames are provided, and a first die head and a second die head are provided in parallel between the outer surfaces of one side of the two groups of fixing frames close to each other, a soft board is clamped between the first die head and the second die head, a first injection port and a second injection port are provided in sequence inside the first die head parallel to the inner wall of the soft board, a third injection port and a fourth injection port are provided in sequence inside the second die head parallel to the inner wall of the soft board, a handle is provided on the top outer surface of the soft board, a group of motors are provided on the front outer surfaces of the two groups of fixing frames, and two pairs of air inlet pipes and air outlet pipes are provided in parallel on the outer surfaces of one side of the first die head and the second die head away from each other. Through the cooperation of the above structures, the thickness and width of the film can be adjusted according to production requirements to meet the requirements of different industries for multi-layer structure protective films.

Description

Technical Field

[0001] The utility model belongs to the technical field of casting machine die heads, in particular to a casting equipment die head component for a multi-layer structure protective film. Background Art

[0002] The die assembly of the cast film equipment for multi-layer protective film is a precision equipment component specially used for the production of multi-layer protective film. The die assembly consists of multiple parts, including a feed port and an extrusion port, to form a multi-layer film. Through the carefully designed nozzle and flow channel structure, the die assembly can ensure the precise allocation and uniform distribution of each layer of film material during the extrusion process, thereby achieving high-quality production of multi-layer protective film. The thickness and width of the film can be adjusted according to production needs to meet the needs of different industries for multi-layer protective film.

[0003] The utility model with the announcement number CN220362951U discloses a casting die head, which includes a plurality of die head units and a feed pipeline. Each die head unit has a feed channel, and the feed channels between the plurality of die head units are spaced apart; the feed pipeline is connected to the feed channel, and the casting die head can improve the problem of the thickness of each layer of the prepared multi-layer film material being difficult to control and the poor thickness uniformity to a certain extent.

[0004] In the process of implementing this application, it was found that the technology has the following problems: in the above patent documents, the die assembly of the casting equipment cannot uniformly shape the multi-layer raw materials, cannot adjust the raw material injection flow rate, and no heating assembly is set, which makes it difficult to ensure the stability and uniformity of the film, which is not conducive to the melting and casting of the raw materials, and reduces production efficiency.

[0005] For this purpose, a die head assembly of a casting device for a multi-layer protective film is proposed. Utility Model Content

[0006] The purpose of the utility model is to uniformly shape multi-layer raw materials and effectively adjust the thickness and width of the film to meet the needs of different industries for multi-layer protective films. The present application provides a die head assembly for a casting equipment for a multi-layer protective film.

[0007] The technical solution adopted by the utility model is as follows:

[0008] A die assembly of a casting device for a multi-layer protective film, comprising a fixing frame, wherein two groups of the fixing frames are provided, and a first die and a second die are provided in parallel between the outer surfaces of one side of the two groups of fixing frames close to each other, a soft board is clamped between the first die and the second die, and a first injection port and a second injection port are provided in sequence inside the first die parallel to the inner wall of the soft board;

[0009] A third injection port and a fourth injection port are sequentially arranged inside the second die head parallel to the inner wall of the soft board, a handle is arranged on the top outer surface of the soft board, a group of motors are arranged on the front outer surfaces of the two groups of fixing frames, and two pairs of air inlet pipes and air outlet pipes are arranged in parallel on the outer surfaces of the sides of the first die head and the second die head that are away from each other.

[0010] Furthermore, a group of connection blocks are provided on the left and right outer surfaces of the first die head and the second die head, and a threaded rod is provided on the output end of each group of the motors.

[0011] Furthermore, a group of screw rod chambers are opened on the inner wall of each group of the fixing frame, and each group of the screw rod chambers includes a first thread, a threaded sleeve and a connecting block. The periphery of each group of threaded rods is sequentially provided with a first thread and a second thread, and the periphery of the first thread and the second thread are rotatably connected with a group of threaded sleeves, and the first thread and the second thread have opposite thread directions.

[0012] Furthermore, the outer surface of the other end of each group of the threaded rods is rotatably connected to the inner wall of the corresponding screw rod chamber, and each group of the threaded sleeves is fixedly connected to the corresponding connecting block.

[0013] Furthermore, two groups of heating cavities are arranged in parallel on the inner walls of the first die head and the second die head, and the two groups of heating cavities are respectively connected with the air passages of the air inlet pipe and the air outlet pipe.

[0014] Furthermore, the other side of the first injection port, the second injection port, the third injection port and the fourth injection port is connected with a shaping port, and the outer surface of the soft board is slidably connected with the inner surface of the side where the first die head and the second die head are close to each other.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0016] 1. In the utility model, when a multi-layer protective film is produced by using a die assembly of a casting device, different types of plastic raw materials are respectively conveyed to the first injection port, the second injection port, the third injection port and the fourth injection port, and the position of the soft board between the first die head and the second die head is adjusted by pulling the handle, thereby adjusting the on-off and injection flow rates of the injection ports of different raw materials, thereby determining the thickness and uniformity of each layer of the film, and starting the corresponding motor to rotate the threaded rod connected to the output end thereof. Since the first thread and the second thread rotate in opposite directions, the threaded sleeves on their peripheries will approach or move away from each other, thereby adjusting the width of the molding port, and effectively adjusting the thickness and width of the film to meet the needs of different industries for multi-layer protective films.

[0017] 2. In the utility model, heating gas is injected into the heating chamber through the air inlet pipe, and multiple groups of raw material injection ports are heated through the heating chamber, ensuring that each material can be extruded at an appropriate temperature and pressure. Various molten plastics are extruded through the molding port in a preset proportion and sequence to form a multi-layer film. The extruded multi-layer film undergoes subsequent cooling treatment to maintain its shape and performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the setting method of the shaping port of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the die head spacing adjustment component of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the setting method of the heating chamber of the utility model;

[0022] Figure 5 It is a main cross-sectional view of the touch head assembly of the utility model.

[0023] In the figure: 1-fixed frame; 2-first die head; 3-second die head; 4-first injection port; 5-handle; 6-inlet pipe; 7-outlet pipe; 8-motor; 9-second injection port; 10-soft board; 11-connecting block; 12-molding port; 13-first thread; 14-threaded sleeve; 15-second thread; 16-threaded rod; 17-third injection port; 18-fourth injection port; 19-heating chamber; 20-screw chamber. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example 1

[0025] Reference Figure 1-Figure 5A die assembly of a casting device for a multi-layer protective film comprises a fixing frame 1, wherein the fixing frame 1 is provided with two groups, and a first die head 2 and a second die head 3 are arranged in parallel between the outer surfaces of the two groups of fixing frames 1 on one side close to each other, a soft board 10 is clamped and arranged between the first die head 2 and the second die head 3, a first injection port 4 and a second injection port 9 are arranged in sequence inside the first die head 2 parallel to the inner wall of the soft board 10, a third injection port 17 and a fourth injection port 18 are arranged in sequence inside the second die head 3 parallel to the inner wall of the soft board 10, a handle 5 is arranged on the top outer surface of the soft board 10, a group of motors 8 are arranged on the front outer surfaces of the two groups of fixing frames 1, and two pairs of air inlet pipes 6 and air outlet pipes 7 are arranged in parallel on the outer surfaces of the first die head 2 and the second die head 3 on the side away from each other. Specifically, the thickness and width of the film can be adjusted according to production requirements through the cooperation of the above structures to meet the requirements of different industries for multi-layer protective films.

[0026] Reference Figure 1-Figure 5 , a group of connecting blocks 11 are provided on the outer surfaces of the left and right sides of the first die head 2 and the second die head 3, and a threaded rod 16 is provided at the output end of each motor 8. Specifically, the threaded rod 16 connected to the output end is rotated by starting the corresponding motor 8. A group of screw rod chambers 20 are provided on the inner wall of each fixed frame 1, and each group of screw rod chambers 20 includes a first thread 13, a threaded sleeve 14 and a connecting block 11. The periphery of each group of threaded rods 16 is sequentially provided with a first thread 13 and a second thread 15, and the periphery of the first thread 13 and the second thread 15 is rotatably connected with a group of threaded sleeves 14, and the first thread 13 and the second thread 15 have opposite thread directions. Specifically, because the first thread 13 and the second thread 15 have opposite thread directions, the threaded sleeves 14 on their peripheries will approach or move away from each other.

[0027] Reference Figure 1-Figure 5 The outer surface of the other end of each set of threaded rods 16 is rotatably connected to the inner wall of the corresponding screw chamber 20, and each set of threaded sleeves 14 is fixedly connected to the corresponding connection block 11. Specifically, the outer threaded sleeves 14 move closer or farther away from each other, driving the corresponding connection blocks 11 to move closer or farther away from each other, thereby adjusting the width of the molding port 12, and effectively adjusting the thickness and width of the film to meet the needs of different industries for multi-layer protective films. Two sets of heating chambers 19 are arranged in parallel on the inner walls of the first die 2 and the second die 3, and the two sets of heating chambers 19 are connected to the airways of the air inlet pipe 6 and the air outlet pipe 7 respectively. Specifically, the heating gas is injected into the heating chamber 19 through the air inlet pipe 6, and the multiple sets of raw material injection ports are heated through the heating chamber 19, ensuring that each material can be extruded at an appropriate temperature and pressure.

[0028] Reference Figure 1-Figure 5The other side of the first injection port 4, the second injection port 9, the third injection port 17 and the fourth injection port 18 is connected with a molding port 12, and the outer surface of the soft board 10 is slidably connected with the inner surface of the side where the first die head 2 and the second die head 3 are close to each other. Specifically, by pulling the handle 5, the position of the soft board 10 between the first die head 2 and the second die head 3 is adjusted, thereby adjusting the on-off and injection flow rates of different raw material injection ports, thereby determining the thickness and uniformity of each layer of the film.

[0029] The implementation principle of the die head assembly of a casting device for a multi-layer protective film of the present application is as follows:

[0030] When the die assembly of the casting equipment is used to produce the multi-layer protective film, different types of plastic raw materials are respectively conveyed to the first injection port 4, the second injection port 9, the third injection port 17 and the fourth injection port 18, and the handle 5 is pulled to adjust the position of the soft board 10 between the first die head 2 and the second die head 3, thereby adjusting the on-off and injection flow of different raw material injection ports, thereby determining the thickness and uniformity of each layer of the film, and the corresponding motor 8 is started to rotate the threaded rod 16 connected to the output end thereof. Since the first thread 13 and the second thread 15 have opposite thread directions, the outer thread sleeves 14 will approach or move away from each other, thereby adjusting the width of the molding port 12, and effectively adjusting the thickness and width of the film to meet the needs of different industries for multi-layer protective films.

[0031] On the other hand, heating gas is injected into the heating chamber 19 through the air inlet pipe 6, and multiple groups of raw material injection ports are heated through the heating chamber 19, ensuring that each material can be extruded at an appropriate temperature and pressure. Various molten plastics are extruded through the molding port 12 in a preset proportion and sequence to form a multi-layer film. The extruded multi-layer film undergoes subsequent cooling treatment to maintain its shape and performance.

[0032] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A die assembly for a multi-layer protective film casting device, comprising a fixing frame (1), characterized in that: The fixing frame (1) is provided with two groups, and a first die head (2) and a second die head (3) are arranged in parallel between the outer surfaces of one side of the two groups of fixing frames (1) close to each other, a soft board (10) is clamped and arranged between the first die head (2) and the second die head (3), and a first injection port (4) and a second injection port (9) are arranged in sequence inside the first die head (2) and parallel to the inner wall of the soft board (10); A third injection port (17) and a fourth injection port (18) are sequentially arranged inside the second die head (3) parallel to the inner wall of the soft board (10); a handle (5) is arranged on the top outer surface of the soft board (10); a group of motors (8) are arranged on the front outer surfaces of the two groups of fixing frames (1); and two pairs of air inlet pipes (6) and air outlet pipes (7) are arranged in parallel on the outer surfaces of the first die head (2) and the second die head (3) on the sides away from each other.

2. The die assembly of a casting device for a multi-layer protective film according to claim 1, characterized in that: A group of connection blocks (11) are provided on the left and right outer surfaces of the first die head (2) and the second die head (3), and a threaded rod (16) is provided at the output end of each group of the motors (8).

3. A die assembly for a multi-layer protective film casting device as claimed in claim 2, characterized in that: Each set of the fixing frames (1) has an inner wall formed with a screw rod chamber (20), each set of the screw rod chamber (20) comprising a first thread (13), a thread sleeve (14) and a connecting block (11), the periphery of each set of threaded rods (16) is provided with a first thread (13) and a second thread (15) in sequence, and the peripheries of the first thread (13) and the second thread (15) are both rotatably connected to a set of thread sleeves (14), and the first thread (13) and the second thread (15) have opposite thread directions.

4. A die assembly for a multi-layer protective film casting device as claimed in claim 3, characterized in that: The outer surface of the other end of each group of threaded rods (16) is rotatably connected to the inner wall of the corresponding screw rod chamber (20), and each group of threaded sleeves (14) is fixedly connected to the corresponding connecting block (11).

5. The die assembly of a casting device for a multi-layer protective film according to claim 4, characterized in that: Two groups of heating chambers (19) are arranged in parallel on the inner walls of the first die head (2) and the second die head (3), and the two groups of heating chambers (19) are respectively connected to the air passages of the air inlet pipe (6) and the air outlet pipe (7).

6. The die assembly of a casting device for a multi-layer protective film according to claim 1, characterized in that: The other side of the first injection port (4), the second injection port (9), the third injection port (17) and the fourth injection port (18) is connected to a shaping port (12), and the outer surface of the soft board (10) is slidably connected to the inner surface of the first die head (2) and the second die head (3) on a side close to each other.

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