Feed hopper for cable extrusion molding

Abstract

The utility model discloses a feeding hopper for cable extrusion molding, and belongs to the technical field of cable extrusion molding feeding. The device mainly comprises a bottom frame, a barrel is installed on the bottom frame, a screw rod and a heating unit are installed in the barrel through a bearing, the heating unit is installed on the barrel and provided with an air heater and a hopper, the hopper is installed on the barrel and communicated with the barrel, an arc groove is formed in the inner wall of the hopper, and the two discharging units are installed at an opening of the hopper. The hopper comprises a material plate and a spring, the material plate is installed in the hopper in a hinged mode, the spring is located in the arc groove, the two ends of the spring are connected with the material plate and the arc groove respectively, and the material plate is suitable for rotating and resets under the action of the spring so as to open and close the hopper. The feeding hopper for cable extrusion molding solves the problems that in the extrusion molding process, plastic materials are prone to being accumulated at the feeding port, and accumulation and compaction of the plastic materials are caused.

Description

Technical Field

[0001] This application relates to the technical field of cable extrusion feeding, and specifically provides a feeding hopper for cable extrusion. Background Art

[0002] During the production of cables, in order to form an insulating layer or sheath on the surface of the cable conductor, an extrusion process is usually adopted. During the extrusion process, an extruder is usually used, which can evenly extrude and coat the molten plastic material on the cable conductor to form a continuous insulating layer or sheath.

[0003] For example, the patent with the publication number CN220904044U specifically discloses a cable extruder for preventing material blockage. The extruder includes an extrusion chamber. An inlet is provided at the top of the extrusion chamber. One end of the extrusion chamber away from the inlet is connected to an extrusion head. An anti-blocking component is provided inside the extrusion chamber near the extrusion head, and the anti-blocking component has a heating plate.

[0004] In the above-mentioned disclosed patent, the extruder mainly inputs plastic material into the extrusion chamber through the inlet, melts the plastic material under the action of the heating plate, and extrudes the melted plastic material towards the extrusion head.

[0005] However, in the above-mentioned extruder, since the feeding of the extrusion chamber is mainly carried out through the inlet, during the continuous input of the inlet, under the action of the heating plate, part of the plastic material at the connection between the inlet and the extrusion chamber melts, but part of the plastic material in the upper section of the inlet cannot be completely melted due to temperature reasons, which may cause excessive plastic material to accumulate in the inlet, resulting in the accumulation and compaction of the plastic material, affecting the subsequent plastic material transportation and heating uniformity. Therefore, a feeding hopper for cable extrusion is needed to solve the above problems.

[0006] It should be noted that the above information disclosed in this background art section is only used to understand the background art of the concept of this application, and therefore, it may include information that does not constitute the prior art. Summary of the Utility Model

[0007] Based on the above problems existing in the prior art, the problem to be solved by this application is to provide a feeding hopper for cable extrusion, which solves the problem that plastic material is likely to accumulate at the inlet during the extrusion process, resulting in the accumulation and compaction of the plastic material.

[0008] To achieve the above object, the present application provides the following technical solution: A feeding hopper for cable extrusion, including a chassis on which a cylinder body is installed. A screw rod is installed in the cylinder body by bearings, a heating unit which is installed on the cylinder body and has a hot air blower, a hopper which is installed on the cylinder body and communicates with the cylinder body. An arc groove is provided on the inner wall of the hopper, and two feeding units are installed at the opening of the hopper. The hopper includes a material plate which is hinged and installed in the hopper, and a spring which is located in the arc groove. The two ends of the spring are respectively connected to the material plate and the arc groove. The material plate is adapted to rotate and reset under the action of the spring to open and close the hopper.

[0009] Preferably, the two ends of the material plate extend with protruding ends which are adapted to the arc groove.

[0010] Preferably, the connecting ends of the two material plates and the hopper are arranged oppositely to form a double-door structure, and rubber strips are installed on the end faces of the two material plates close to each other.

[0011] Preferably, the heating unit further includes a hoop group which consists of two corresponding hoop rings. A heating cavity is formed between the hoop group and the inner wall of the cylinder body, and the hot air blower communicates with the heating cavity.

[0012] Preferably, a motor is installed on one side of the chassis, and the output end of the motor is connected to the end of the screw rod.

[0013] The beneficial effect of the present application is: A feeding hopper for cable extrusion provided by the present application opens and closes the hopper through the mutual cooperation of two material plates. When the two material plates are subjected to an external force, the two material plates rotate to open the hopper, and at the same time, the rotation of the material plate compresses the spring to contract. After the external force on the material plate disappears, under the action of the spring, the material plate bounces back to reset and closes the hopper, thereby achieving the purpose of intermittent opening and closing of the hopper and solving the problem that plastic material is likely to accumulate at the feeding port during the extrusion process, resulting in the accumulation and compaction of plastic material.

[0014] In addition to the purposes, features and advantages described above, the present application has other purposes, features and advantages. The following will refer to the drawings for a further detailed description of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The specification drawings forming a part of the present application are used to provide a further understanding of the present application. The schematic embodiments and descriptions thereof of the present application are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0016] Figure 1This is the overall schematic diagram of a feeding hopper for cable extrusion in the present application;

[0017] Figure 2 is Figure 1 the enlarged schematic diagram of part A in

[0018] Figure 3 is Figure 2 the enlarged structural schematic diagram of the blanking unit in

[0019] Among them, the reference numerals in the figure are as follows:

[0020] 1, chassis; 11, motor; 12, cylinder; 13, hopper; 131, arc groove; 2, heating unit; 21, hot air blower; 22, hoop group; 221, heating cavity; 3, blanking unit; 31, material plate; 32, spring. Specific embodiments

[0021] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The following will describe the present application in detail with reference to the drawings and in combination with the embodiments.

[0022] In order to enable those skilled in the art to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0023] As Figure 1 shown, the present application provides a feeding hopper for cable extrusion, including a chassis 1 and a cylinder 12 installed on the chassis 1. The cylinder 12 is used to provide a melting area for the plastic material and its transportation. A screw rod (not shown in the figure) is installed in the cylinder 12 by bearings. At the same time, a motor 11 is provided at one end of the chassis 1, and the output end of the motor 11 is connected to the end of the screw rod to drive the screw rod to rotate, thereby realizing the transportation of the plastic material in the cylinder 12;

[0024] At the same time, a hopper 13 is installed on the cylinder 12 near the motor 11. The hopper 13 is communicated with the inside of the cylinder 12, so as to transport the plastic material into the cylinder 12 through the hopper 13;

[0025] As Figures 2 - 3As shown, two groups of unloading units 3 are installed at the opening of the hopper 13, and the unloading units 3 include material plates 31 hingedly installed in the hopper 13, and the connection ends of the two groups of material plates 31 and the hopper 13 are arranged opposite to each other to form a double-door structure, and rubber strips (not shown in the figure) are installed on the end surfaces of the two groups of material plates 31 close to each other so that the end surfaces of the two groups of material plates 31 close to each other are suitable for contacting each other through the rubber strips to close the hopper 13;

[0026] Protruding ends extend from both ends of the material plate 31, and arc grooves 131 adapted to the protruding ends of the material plate 31 are provided on the side walls of the hopper 13, so that when the material plate 31 rotates, the protruding ends cooperate with the arc grooves 131 to limit the rotation of the material plate 31, and a spring 32 is provided in the arc grooves 131, and the two ends of the spring 32 are respectively connected to the protruding ends of the material plate 31 and the end surfaces in the arc grooves 131;

[0027] When adding materials into the hopper 13, the plastic materials are first accumulated on the two sets of material plates 31, and downward pressure is applied to the two sets of material plates 31. When the materials accumulated on the material plates 31 are greater than the maximum bearing limit of the material plates 31, the two sets of material plates 31 rotate and squeeze the spring 32 to shrink the spring 32. At the same time, the two sets of material plates 31 are separated from each other, and the hopper 13 is opened, so that the plastic materials on the material plates 31 enter the interior of the hopper 13;

[0028] After the plastic material on the material plate 31 enters the hopper 13, the pressure on the material plate 31 disappears, and the material plate 31 is rebounded and reset under the action of the spring 32, thereby returning the material plate 31 to its original position, and so on, thereby achieving the purpose of intermittent material discharge in the hopper 13;

[0029] Continue to refer Figure 1 As shown, a heating unit 2 is provided on the outer ring of the cylinder 12, and the heating unit 2 is used to heat and melt the plastic material in the cylinder 12. The heating unit 2 includes a clamp group 22 fixed to the cylinder 12, and a hot air blower 21 installed at the bottom of the clamp group 22, wherein the clamp group 22 is composed of two groups of corresponding clamp rings, and a heating cavity 221 is formed between the clamp group 22 and the inner wall of the cylinder 12, and the hot air blower 21 is connected to the heating cavity 221, so that heat is output to the heating cavity 221 through the hot air blower 21. In the application, the heating unit 2 adopts hot air heating in the prior art, and its specific structure and principle are not described in detail here;

[0030] When the plastic material enters the barrel 12, the hot air blower 21 and the clamping group 22 cooperate to heat the barrel 12 to melt the plastic material in the barrel 12, and the motor 11 drives the screw rod to rotate to transport the plastic material. At the same time, an extruder head is connected to the end of the barrel 12, and the extruder head is suitable for extruding the melted plastic material onto the cable conductor;

[0031] In summary, through the mutual cooperation of the two groups of material plates 31, the hopper 13 is opened and closed. When the two groups of material plates 31 are subjected to an external force, the two groups of material plates 31 rotate and open the hopper 13. At the same time, the rotation of the material plate 31 compresses the spring 32 to contract. After the external force on the material plate 31 disappears, through the action of the spring 32, the material plate 31 bounces back to its original position and closes the hopper 13, thereby achieving the purpose of intermittent opening and closing of the hopper 13 and solving the problem that plastic materials are likely to accumulate at the feeding port during the extrusion process, resulting in the accumulation and compaction of plastic materials.

[0032] The above description is only a preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any improvements and refinements within the spirit and principle of the present application and without departing from the principle of the present application should also be regarded as within the protection scope of the present application.

Claims

1. A feeding hopper for cable extrusion, comprising: A chassis (1) on which a cylinder body (12) is installed, and a screw rod is installed in the cylinder body (12) by bearings; A heating unit (2) installed on the cylinder body (12), and the heating unit (2) has a hot air blower (21); A hopper (13) installed on the cylinder body (12) and communicating with the cylinder body (12), and an arc groove (131) is formed on the inner wall of the hopper (13); Two sets of blanking units (3) installed at the opening of the hopper (13), and it is characterized in that: the hopper (13) includes: A material plate (31) hingedly installed in the hopper (13); A spring (32) located in the arc groove (131), and two ends of the spring (32) are respectively connected to the material plate (31) and the arc groove (131); Wherein: the material plate (31) is adapted to rotate and reset under the action of the spring (32) to open and close the hopper (13).

2. The feed hopper for cable extrusion according to claim 1, characterized in that: The two ends of the material plate (31) extend with protruding ends, and the protruding ends are adapted to the arc groove (131).

3. The feed hopper for cable extrusion according to claim 2, characterized in that: The connection ends of the two sets of material plates (31) and the hopper (13) are arranged oppositely to form a double-door structure, and rubber strips are installed on the end faces of the two sets of material plates (31) close to each other.

4. A hopper for cable extrusion according to claim 3, characterized in that: The heating unit (2) further includes a hoop group (22), the hoop group (22) is composed of two corresponding hoop rings, a heating cavity (221) is formed between the hoop group (22) and the inner wall of the cylinder body (12), and the hot air blower (21) is communicated with the heating cavity (221).

5. The feed hopper for cable extrusion according to claim 1, characterized in that: A motor (11) is installed on one side of the chassis (1), and the output end of the motor (11) is connected to the end of the screw rod.

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