A nosepiece insert mold

Abstract

The utility model discloses a head embedded sleeve mould, including first sleeve mould and second sleeve mould, first sleeve mould includes first mould cover, first mould core, and second sleeve mould includes second mould cover, second mould core, the first mould core of first sleeve mould is sleeved in the second mould core of second sleeve mould, the first mould cover of first sleeve mould is sleeved in the second mould cover of second sleeve mould, between the guide material cone of first mould core and the guide material cone of second mould core, between the guide material cone hole of first mould cover and the guide material cone hole of second mould cover respectively form smooth guide material cone transition surface and cone hole transition surface, and form melt channel between guide material cone transition surface and cone hole transition surface. Adopt this scheme, can choose sleeve mould specification according to the extrusion specification, do not involve the dismounting problem of complex head in the specification switching process, only need to dismount embedded sleeve mould in the specification switching process. The head nested sleeve mould with the structure can effectively save the head switching time, can improve production efficiency greatly, saves production cost.

Description

Technical Field

[0001] This utility model relates to an embedded die for a machine head, belonging to the field of cable production technology. Background Technology

[0002] In the extrusion production industry, meeting the demand for multi-specification products often requires the use of multiple die heads. When switching product specifications, the original die head needs to be removed, a new mold installed, and the new mold calibrated before production can begin. The frequent disassembly and assembly during mold changes often leads to a decrease in die head positioning accuracy and an increased risk of seal failure. Furthermore, because multiple die heads need to be prepared for production, a large number of molds need to be stored for each switch, occupying significant warehouse space and increasing manufacturing costs, becoming a key factor restricting production efficiency. Improving existing technologies also often faces a contradiction between physical switching and efficient continuous production caused by differences in size and pressure between existing die heads; this phenomenon has become a bottleneck problem in the industry. Utility Model Content

[0003] To address the problems mentioned above in the background art, this utility model provides a head-embedded mold.

[0004] The technical solution to achieve the purpose of this utility model is:

[0005] Including the first set of molds and the second set of molds;

[0006] The first mold set includes a first mold sleeve and a first mold core; the second mold set includes a second mold sleeve and a second mold core.

[0007] The first mold core of the first mold set is fitted inside the second mold core of the second mold set; the first mold sleeve of the first mold set is fitted inside the second mold sleeve of the second mold set.

[0008] A smooth guide cone transition surface and a cone hole transition surface are formed between the guide cone of the first mold core and the guide cone of the second mold core, and between the guide cone hole of the first mold sleeve and the guide cone hole of the second mold sleeve, respectively. A melt channel is formed between the guide cone transition surface and the cone hole transition surface.

[0009] In the aforementioned embedded die head design, when small-diameter extrusion is required, both the first and second die sets are assembled. The conductor extends from the conductor hole of the first die core, and the extruded material passes through the shaping section of the second die core after being extruded from the melt channel. At this stage, the second die core is in operation. When large-diameter extrusion is required, the first die core and the first die sleeve are removed, and the conductor extends from the conductor hole of the first die core. At this point, the transition surface of the guide cone of the first die core and the transition surface of the cone hole of the second die sleeve form a new melt channel, and the first die core is in operation. This structure avoids complex die head assembly and disassembly issues; only the embedded die set needs to be disassembled and assembled during specification switching. Using this structure, specification switching requires only a simple change, eliminating the need for storing and switching a large number of dies. This saves both die head switching time and die storage issues, significantly improving production efficiency.

[0010] Further, or optionally, to facilitate fixing the first and second sets of dies and prevent slippage between them during the extrusion of the extruded material,

[0011] The outer peripheral wall of the shaping section of the first mold sleeve is provided with a first annular step, forming a limiting surface that extends radially outward.

[0012] The inner peripheral wall of the shaping section of the second mold is provided with a second annular step, forming an inwardly extending bearing surface;

[0013] The radius of the first annular step is greater than the radius of the second annular step, and the limiting surface and the bearing surface are fitted together.

[0014] Further or optionally, in order to facilitate the assembly of the first mold core into the second mold core and prevent the interior of the second mold core from being scratched and affecting the smoothness of the extruded surface, the first mold core is provided with an axially extending transition cone surface on the side near the first mold sleeve, so that the outer diameter of the shaft decreases axially, forming an assembly guide section.

[0015] Further or optionally, in order to ensure the strength of the first mold core and the second mold core, the angle between the generatrix of the transition cone surface and the axis of the cylinder is 5 to 10°.

[0016] Further or optionally, in order to prevent the extruded material from accumulating during the extrusion process and affecting the second die core, the exit height of the shaping section of the first die sleeve is higher than the exit height of the shaping section of the second die sleeve.

[0017] Further or optional, in order to further prevent wobbling between the first mold sleeve and the second mold sleeve and to facilitate disassembly and assembly between the two, the outer side wall of the first mold sleeve is provided with an external thread, and the inner side wall of the second mold sleeve is provided with an internal thread that mates with the external thread of the first mold sleeve. When the thread is fully screwed in, the limiting surface of the first annular step and the bearing surface of the second annular step abut against each other.

[0018] By adopting the above technical solution, this utility model has the following beneficial effects:

[0019] (1) The embedded die of this application allows for selection of die specifications based on extrusion specifications. During specification switching, there is no complex disassembly or assembly of the die head; only the embedded die needs to be disassembled and assembled. This nested die structure effectively saves die head switching time, significantly improves production efficiency, and reduces production costs.

[0020] (2) The first and second mold sleeves of the die head embedded mold of this application are respectively provided with an annular limiting surface and a bearing surface, which can effectively limit the sliding problem between the molds during the extrusion process.

[0021] (3) In this application, the first mold core of the die head embedded sleeve is provided with a transition cone surface extending along the axial direction on the side near the first mold sleeve, which can prevent the inside of the second mold core from being scratched during the extrusion process and affecting the smoothness of the extruded surface.

[0022] (4) The embedded die of the present application limits the angle between the generatrix of the transition cone surface and the axis of the cylinder for the first die core, which can effectively ensure the strength of the first die core and the second die core.

[0023] (5) In this application, the outlet height of the shaping section of the first die sleeve of the die head embedded die is higher than that of the shaping section of the second die sleeve, which can prevent the extruded material from accumulating and affecting the second die core during the extrusion process.

[0024] (6) The first and second mold sleeves of the die head embedded mold of this application are provided with matching threaded structures, which are easy to disassemble and assemble and can prevent the two from shaking during the extrusion process. Attached Figure Description

[0025] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein...

[0026] Figure 1 This is a schematic diagram of the structure of this utility model.

[0027] The labels in the attached diagram are:

[0028] First mold 1, first mold sleeve 11, first annular step 111, first mold core 12, second mold 2, second mold sleeve 21, second annular step 211, second mold core 22, melt channel 3. Detailed Implementation

[0029] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] In the description of the embodiments of this utility model, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The utility model will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of this utility model and should not be used to limit the scope of protection of this utility model.

[0035] (Example 1)

[0036] See Figure 1 A head-mounted embedded mold, comprising a first mold 1 and a second mold 2;

[0037] The first mold set 1 includes a first mold sleeve 11 and a first mold core 12, and the second mold set 2 includes a second mold sleeve 21 and a second mold core 22;

[0038] The first mold core 12 of the first mold 1 is fitted inside the second mold core 22 of the second mold 2; the first mold sleeve 11 of the first mold 1 is fitted inside the second mold sleeve 21 of the second mold 2.

[0039] Smooth guide cone transition surfaces and cone hole transition surfaces are formed between the guide cone of the first mold core 12 and the guide cone of the second mold core 22, and between the guide cone hole of the first mold sleeve 11 and the guide cone hole of the second mold sleeve 21, respectively. A melt channel 3 is formed between the guide cone transition surface and the cone hole transition surface.

[0040] In the above structure, the first set of molds and the second set of molds are installed on the machine head at the same time. At this time, both the first set of molds and the second set of molds are in use. When in use, the conductor extends out from the conductor channel of the first mold core 12, the extruder is started, the extruded material is extruded from the melt channel 3, and then extruded into shape after being shaped by the shaping section of the first mold core 12.

[0041] When a larger diameter extrusion specification is required, the first die core 12 and the first die sleeve 11 are removed from the second die core 22 and the second die sleeve 12. At this time, the channel where the first die core 12 is installed is used as the conductor channel of the second die core 22. At this time, the extruded material passes through the extrusion channel of the second die core 22 and the second die sleeve 21, and then is shaped and extruded after being shaped by the shaping section of the second die sleeve.

[0042] The outer peripheral wall of the shaping section of the first mold sleeve 11 is provided with a first annular step 111, forming a radially outwardly extending limiting surface.

[0043] The inner peripheral wall of the shaping section of the second mold sleeve 21 is provided with a second annular step 211, forming an inwardly extending bearing surface;

[0044] The radius of the first annular step 111 is larger than the radius of the second annular step 211, and the limiting surface and the bearing surface are fitted together.

[0045] The limiting surface and the bearing are both for limiting the first mold sleeve 11 and the second mold sleeve 21. In the actual setting process, other methods can also be used for limiting, such as setting a conical self-locking structure between the first mold sleeve 11 and the second mold sleeve 21 to achieve the self-locking function.

[0046] The first mold core 12 has an axially extending transition tapered surface 13 on the side near the first mold sleeve 11, causing the outer diameter of the shaft to decrease axially, forming an assembly guide section. Figure 1 In this design, the angle between the generatrix of the transition conical surface 13 and the axis of the cylinder is 5°. The second mold core 22 is also provided with a transition conical surface similar to that of the first mold core 12. During installation, the transition conical surface of the first mold core 12 is inserted into the conductor channel of the second mold core 22. The outer diameter of the first mold core 12 is equal to the inner diameter of the second mold core. At this time, the first mold core 12 and the second mold core 22 are effectively aligned. The conductor passing through the first mold core 12 is located at the center of the second mold core 22. This design can effectively prevent the cable from becoming eccentric after extrusion.

[0047] As another preferred embodiment of this solution, the outlet height of the shaping section of the first mold sleeve 11 is higher than the outlet height of the shaping section of the second mold sleeve 21. During installation, tools can be used to fix the relatively protruding part to achieve effective fixation.

[0048] As another preferred embodiment of this solution, in order to further fix the first mold sleeve 11 and the second mold sleeve 21, the outer side wall of the first mold sleeve 11 is provided with an external thread, and the inner side wall of the second mold sleeve 21 is provided with an internal thread that mates with the external thread of the first mold sleeve 11. When the thread is fully screwed in, the limiting surface of the first annular step 111 abuts against the bearing surface of the second annular step 211.

[0049] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A head-mounted embedded mold, characterized in that: Including the first mold (1) and the second mold (2); The first mold set (1) includes a first mold sleeve (11) and a first mold core (12), and the second mold set (2) includes a second mold sleeve (21) and a second mold core (22); The first mold core (12) of the first mold (1) is fitted inside the second mold core (22) of the second mold (2); the first mold sleeve (11) of the first mold (1) is fitted inside the second mold sleeve (21) of the second mold (2); Smooth guide cone transition surfaces and cone hole transition surfaces are formed between the guide cone of the first mold core (12) and the guide cone of the second mold core (22), and between the guide cone hole of the first mold sleeve (11) and the guide cone hole of the second mold sleeve (21), respectively. A melt channel (3) is formed between the guide cone transition surface and the cone hole transition surface.

2. The head-mounted embedded mold according to claim 1, characterized in that: The outer peripheral wall of the shaping section of the first mold sleeve (11) is provided with a first annular step (111), forming a radially outwardly extending limiting surface. The inner peripheral wall of the shaping section of the second mold (21) is provided with a second annular step (211) to form an inwardly extending bearing surface; The radius of the first annular step (111) is greater than the radius of the second annular step (211), and the limiting surface and the bearing surface are fitted together.

3. The head-mounted embedded mold according to claim 1, characterized in that: The first mold core (12) has an axially extending transition cone surface (13) on the side near the first mold sleeve (11), so that the outer diameter of the shaft decreases axially, forming an assembly guide section.

4. The head-mounted embedded sleeve mold according to claim 3, characterized in that: The angle between the generatrix of the transition cone surface (13) and the axis of the cylinder is 5 to 10°.

5. The head-mounted embedded mold according to claim 2, characterized in that: The exit height of the shaping section of the first mold (11) is higher than the exit height of the shaping section of the second mold (21).

6. The head-embedded mold according to claim 2, characterized in that: The first mold (11) The outer side wall of the first mold (11) is provided with an external thread, and the inner side wall of the second mold (21) is provided with an internal thread that mates with the external thread of the first mold (11). When the thread is fully screwed in, the limiting surface of the first annular step (111) abuts against the bearing surface of the second annular step (211).

Images