Efficiency-enhanced extruder structure

Abstract

The utility model provides an efficiency-enhanced extruder structure, which is characterized in that under the condition of not changing the extrusion process of the original extruder, the existing extruder structure is utilized, and a runner on an inner opening mold is designed and improved, so that a sizing material with enough width is provided for an outer opening mold; the problem that the width of tread rubber extruded by an existing extruder structure is limited is solved. By designing and increasing the number of glue channel openings in the outer opening mold, the phenomena that the production efficiency is low and the extrusion capacity is insufficient when an existing extruder structure is used are solved; the rubber flow channel is additionally arranged on the extrusion main machine, so that multi-formula rubber material extrusion can be realized, and the defect that a traditional extrusion main machine is single in finished product type is overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of fetal membrane manufacturing, in particular to an efficiency-enhanced extruder structure. Background Art

[0002] The tread rubber is the outermost layer of the tire that is in direct contact with the road surface and has a pattern printed on the surface. It can give the tire traction, can cushion the impact and swing during driving, and has the function of preventing the cord layer from being cut and punctured. It is molded and discharged through a die by extrusion molding. It is widely used in aluminum special-shaped structures and also used in plastic parts. In short, the die for extruding the tread rubber is a mold molding tool, which mainly realizes the processing of the shape of the object by changing the physical state of the molded material.

[0003] After extensive searching, it was found that: Chinese utility model patent: application number [CN201220407450.9], publication number [CN202702572U], the utility model discloses a composite rubber extrusion die, including three mold forming plates, product cavity grooves, inlaid mold centers, and assembly guide pillars. The three mold forming plates are respectively a mold front forming plate, a mold middle forming plate, and a mold rear forming plate, which are arranged in sequence and connected together through assembly guide pillars. The three mold forming plates are provided with inlaid mold centers, and the centers on the three mold forming plates constitute the product cavity grooves. The mold forming plates form an extended and gradually changing product cavity groove to ensure the continuous stability of the glue output and to ensure that the size fluctuation of the product is within a reasonable tolerance range; the inlaid mold center reduces the obstruction to the rubber material, prevents the rubber material from flowing unsmoothly to produce scorched particles, and affects the surface appearance of the product; an air flow channel is opened on the inlaid mold center to ensure that the pressure in the hole of the product is consistent during production and that the product is not deformed. However, when the extrusion die is used, it can only extrude one (one) rubber strip at a time, which results in low production efficiency and insufficient extrusion capacity. If the capacity is increased by adding new equipment, the high investment cost of the new extrusion equipment and factory buildings will inevitably lead to increased operating costs. Utility Model Content

[0004] The purpose of the utility model is to provide an extruder structure with enhanced performance to solve the above technical problems.

[0005] In order to solve the above technical problems, the utility model provides an efficiency-enhanced extruder structure, including an extruder main body and an extruder die, the extruder die including an inner die and an outer die, the inner die is provided with a central glue flow channel and a side glue flow channel, the input end of the central glue flow channel is connected to the first glue delivery cavity of the extruder main body, and the output end thereof is connected to the first glue channel of the outer die, and the first glue channel is not less than one;

[0006] The input end of the edge glue flow channel is connected to the second glue feeding cavity of the extruder main machine, and the output end thereof is connected to the second glue channel of the outer die, and the second glue channel is symmetrically distributed along the center line of the first glue channel.

[0007] In a preferred embodiment, the central glue flow channel and the side glue flow channel are arranged in an upper and lower spacing.

[0008] In a preferred embodiment, the central glue flow channel and the side glue flow channel converge along the extension direction of the flow channels.

[0009] In a preferred embodiment: the cross-sectional area of ​​the edge glue flow channel is larger than the cross-sectional area of ​​the second glue flow channel.

[0010] In a preferred embodiment: the cross-sectional area of ​​the central glue flow channel is larger than the cross-sectional area of ​​the first glue flow channel.

[0011] In a preferred embodiment, a locking mechanism is also included, and the locking mechanism presses against the radial surface of the outer die to apply a pre-tightening force to the extrusion die.

[0012] Compared with the prior art, the technical solution of the utility model has the following beneficial effects:

[0013] The utility model provides an efficiency-enhanced extruder structure, which utilizes the existing extruder structure without changing the original extrusion process of the extruder, and improves the design of the flow channel on the inner die to ensure that the outer die is provided with a rubber material of sufficient width, thereby solving the problem of limited width of the tread rubber extruded by the existing extruder structure.

[0014] The utility model provides a performance-enhanced extruder structure, which solves the problems of low production efficiency and insufficient extrusion capacity when the existing extruder structure is used by designing and increasing the number of glue passages on an outer die. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an external schematic diagram of the extruder of the utility model;

[0016] Figure 2 This is an axial section view of the structure of the extruder of the utility model;

[0017] Figure 3 It is a left view of the inner die 102 of the extruder of the utility model;

[0018] Figure 4 It is a right side view of the inner die 102 of the extruder of the utility model;

[0019] Figure 5 This is a schematic axial section diagram of the inner die 102 of the extruder of the utility model;

[0020] Figure 6 yes Figure 1Sectional view at AA;

[0021] Figure 7 It is a schematic diagram of the cross-sectional structure of the traditional outer die shaft;

[0022] Figure 8 This is the effect of using a traditional die to extrude the tread rubber;

[0023] Fig. 9 This is a schematic diagram of the cross-sectional structure of the outer die shaft of the utility model;

[0024] Fig.10 The utility model is used to extrude the tread rubber. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "installed / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0028] refer to Figure 1-2The utility model provides an enhanced performance extruder structure, including an extruder main body 101 and an extrusion die, wherein the extrusion die includes an inner die 102 and an outer die 103. Since the inner die 102 and the outer die 103 are two separate entities in terms of spatial structure, and the inner die 102 is clamped between the extrusion main body 101 and the outer die 103. In order to simplify the connection structure between the monomers to reduce the equipment manufacturing cost expenditure while taking into account the connection stability between the extrusion main body 101 and the extrusion die, the embodiment of the utility model is also provided with a locking mechanism 104 for fixing the extrusion die. The extrusion die applies a pre-tightening force relative to the extrusion main body 101 to the locking mechanism 104 pressed against the radial surface of the outer die 103, so that the extrusion die fits tightly on the extrusion main body 101 to ensure the sealing of the connection. On the other hand, the pressure applied by the locking mechanism 104 acts on the extruder main unit 101 through the extrusion die. While the extruder main unit 101 is passively stressed, the change in the cross-section of the rubber channel causes the inner cavity pressure to increase, and the tread rubber shape formed under the same rubber output amount is more uniform.

[0029] The inner die 102 is provided with a center glue flow channel 102-1 and a side glue flow channel 102-2. Figure 3-5 As shown in the structure diagram of the left and right radial surfaces of the inner die 102, it can be seen that the center glue flow channel 102-1 and the side glue flow channel 102-2 are arranged in an upper and lower interval. Different from the traditional die radial (horizontal flow channel) extrusion die, the utility model improves the design of the flow channel on the inner die 102. Figure 5 In the axial cross-section of the inner die 102, it can be seen that the center glue flow channel 102-1 and the side glue flow channel 102-2 gradually converge in the direction of their flow channel extension. Since the input end of the center glue flow channel 102-1 is connected to the first glue delivery cavity 101-1 of the extruder main unit 101, and its output end is connected to the first glue channel 103-1 on the outer die 103, and the cross-sectional area of ​​the center glue flow channel 102-1 is larger than the cross-sectional area of ​​the first glue channel 103-1 (similarly, the input end of the side glue flow channel 102-2 is connected to the second glue delivery cavity 101-2 of the extruder main unit 101, and its output end is connected to the second glue channel 103-2 of the outer die 103). The cross-sectional area of ​​the side glue channel 102-2 is larger than that of the second glue channel 103-2), which makes the glue from the first glue feeding cavity 101-1 (second glue feeding cavity 101-2) not only subject to the friction and extrusion force of the inclined flow channel side wall when flowing through the central glue channel 102-1 (side glue channel 102-2), but also the cavity output pressure increases at the output port of the central glue channel 102-1 (side glue channel 102-2) due to the change in cross-sectional area. On the basis of the same extrusion rate, if Figure 7-8As shown, the conventional extruder needs to control the extrusion pressure by controlling the extrusion cross-sectional area at the rubber material outlet to ensure the uniformity of the material discharge. However, this structure, to a certain extent, causes the rubber surface of the extruded tire membrane to be thin, so that it is difficult to meet the requirements of product performance. As mentioned above, the utility model designs the rubber flow channel in the inner die 102 to increase the pressure value in the rubber flow channel, such as Figure 9-10 As shown, while ensuring the extrusion pressure and uniformity of the rubber compound, the problem of limited product performance parameters caused by the small extrusion cross-sectional area at the traditional rubber compound outlet is improved.

[0030] In addition, since the traditional extruder can only extrude one (one) rubber strip at a time, the production efficiency is low during use, and there is a phenomenon of insufficient extrusion capacity. If the production capacity is increased by adding new equipment, the high investment cost of the new extrusion equipment and factory buildings will inevitably lead to an increase in operating costs. In view of this, the first rubber channel 103-1 of the outer die 103 of this embodiment adopts a multi-opening discharge port, that is, there is no less than one first rubber channel 103-1 connected to the output end of the central rubber channel 102-1, such as Figure 6 As shown, the present embodiment is illustrated by two first glue channels 103-1 spaced in parallel with a predetermined distance. Since the glue in the first glue channel 103-1 is supplied through the first glue delivery cavity 101-1 of the extruder main unit 101, and the second glue channel 103-2 is symmetrically distributed along the center line of the first glue channel 103-1, its glue is delivered through the second glue delivery cavity 101-2 of the extruder main unit 101. The separately separated glue delivery channels ensure that the provided center glue and side glue do not interfere with each other during the delivery process. On the other hand, according to different production and manufacturing requirements, the glue medium conveyed by the first glue channel 103-1 and the second glue delivery cavity 101-2 can be in the form of glue of the same formula or different formulas, so as to overcome the disadvantage of the single finished product type of the traditional extruder main unit 101.

[0031] The above is only a preferred specific implementation method of the utility model, but the design concept of the utility model is not limited to this. Any technician familiar with the technical field who uses this concept to make non-substantial changes to the utility model within the technical scope disclosed by the utility model shall be deemed to infringe the protection scope of the utility model.

Claims

1. A performance-enhanced extruder structure, comprising an extruder main body and an extruder die, characterized in that: The extrusion die comprises an inner die and an outer die, wherein the inner die is provided with a central glue flow channel and a side glue flow channel, wherein the input end of the central glue flow channel is connected to the first glue delivery cavity of the extrusion main machine, and the output end thereof is connected to the first glue channel of the outer die, and the number of the first glue channels is not less than one; The input end of the edge glue flow channel is connected to the second glue feeding cavity of the extruder main machine, and the output end thereof is connected to the second glue channel of the outer die, and the second glue channel is symmetrically distributed along the center line of the first glue channel.

2. The performance-enhanced extruder structure according to claim 1, characterized in that: The central glue flow channel and the side glue flow channel are arranged in an upper and lower interval.

3. The performance-enhanced extruder structure according to claim 1, characterized in that: The central glue flow channel and the side glue flow channel converge along the extending direction of the flow channels.

4. The performance-enhanced extruder structure according to claim 1, characterized in that: The cross-sectional area of ​​the edge glue flow channel is greater than the cross-sectional area of ​​the second glue channel.

5. The performance-enhanced extruder structure according to claim 1, characterized in that: The cross-sectional area of ​​the central glue flow channel is greater than the cross-sectional area of ​​the first glue flow channel.

6. The performance-enhanced extruder structure according to claim 1, characterized in that: The invention also comprises a locking mechanism, wherein the locking mechanism presses against the radial surface of the outer die to apply a pre-tightening force to the extrusion die.

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