Reinforced belt composite core mold and mold

Abstract

The utility model belongs to the technical field of composite pipes, and particularly relates to a reinforced belt composite core mold and a mold, the core mold comprises a core mold base body used for wire feeding and a core mold head used for wire discharging, the core mold head and the core mold base body are structurally independent, the core mold head is connected to the front end of the core mold base body, a wire passing channel is formed in the middle of the core mold base body, and the wire passing channel is communicated with the core mold base body. A wire passing hole is formed in the middle of the core die head, and the wire passing channel is communicated with the wire passing hole. The utility model relates to a composite core mold and a mold in a reinforcing belt manufacturing process, the core mold is improved, a traditional integrated core mold is adjusted into a split type connecting structure, when finished products of different sizes need to be machined, only a core mold head needs to be replaced, a core mold base body at the rear end does not need to be replaced, the machining difficulty is reduced, and the machining efficiency is improved. Parts are easy to process; and the part cost is reduced.

Description

Technical Field

[0001] The present application belongs to the technical field of composite pipes, and in particular, relates to a reinforced belt composite core mold and a mold. Background Art

[0002] At present, the non-metallic pipes for oil and gas are mainly RTP pipes, among which RTP mainly uses various reinforced tapes, such as steel fiber reinforced tapes, steel cord reinforced tapes, polyester tapes, aramid tapes, etc. These are all unidirectional tapes, and the manufacturing process of their reinforced tapes is basically similar: multiple strands of reinforced wires are bundled and divided into equal intervals and arranged side by side → heating → the parallel multiple strands of reinforced wires pass through the mold and are compounded with plastic in the mold (that is, the extruded molten plastic wraps the reinforced wires) → cooling → pulling and winding. The above-mentioned steel fiber refers to a thin steel wire with a diameter generally less than 0.5mm; the steel cord refers to a structure composed of two or more steel wires, or a combination of strands or a combination of strands and wires, with a diameter ranging from 0.5 to 3.0mm.

[0003] In the prior art, the relevant patents include a Chinese invention patent with the patent number CN201910682504.9 and the name "Reinforcement belt production line, belt making mold and reinforcement belt production process", and its technical solution is: a reinforcement belt production line, including: a wire pay-off frame, unwinding multiple strands of reinforcement wire; a combing wire assembly, which divides and combs the unwinding multiple strands of reinforcement wire according to the strands; a heating assembly, which heats the reinforcement wire after combing; a belt making mold, the heated reinforcement wire can pass through the vacuum chamber and the composite chamber successively and be compounded with the molten plastic in the composite chamber to form a strip-shaped reinforcement belt; a shaping assembly, which allows the reinforcement belt to pass through the two rollers in the shaping assembly and adjusts the spacing between the two rollers so that the thickness of the reinforcement belt is equal to the spacing between the two rollers to shape the reinforcement belt; a cooling assembly, which cools the reinforcement belt; and a collection assembly. The core mold of the above patent is an integral part, or a part divided into upper and lower parts (for easy processing), and the entire core mold is a standard part. In order to stabilize the arrangement of multiple strands of steel wire, the wire holes are longer, which may cause the following problems:

[0004] (1) Difficult to process, and the smoothness, parallelism and levelness of the hole after processing cannot be guaranteed;

[0005] (2) High cost;

[0006] (3) Because the wire hole is slightly larger than the steel wire and is too long, the friction contact surface increases. High-speed production (20m / min) can easily damage the core mold or cause it to get stuck. It can also easily cause wear of the steel wire coating, affecting the composite quality and performance of the reinforced belt. Summary of the invention

[0007] In order to overcome the above problems existing in the prior art, a reinforced belt composite core mold and a mold are now proposed.

[0008] To achieve the above technical effects, the technical solution of the present application is as follows:

[0009] A reinforced belt composite core mold includes a core mold base body for wire feeding and a core mold head for wire discharging. The core mold head and the core mold base body are structurally independent of each other. The core mold head is connected to the front end of the core mold base body. A wire passing channel is provided in the middle of the core mold base body, and a wire passing hole is provided in the middle of the core mold head. The wire passing channel is communicated with the wire passing hole.

[0010] Further, the wire passing channel is a through groove structure, and the height of the wire passing channel is less than 10 mm.

[0011] Further, the core mold head and the core mold base body are connected to each other by a first locking bolt.

[0012] Further, a sealing step is provided at the connection between the core mold head and the core mold base body. A convex structure is provided at one end of the core mold head, and a concave structure is provided at one end of the adjacent core mold base body. The convex structure is located in the concave structure to form a sealing step.

[0013] Still further, a positioning pin is provided at one end of the core mold base body provided with the concave structure, and a positioning hole is provided at one end of the core mold head provided with the convex structure. The positioning pin is inserted into the positioning hole.

[0014] Further, the core mold base body is an integral structure.

[0015] Further, the core mold base body includes a core mold upper base body and a core mold lower base body which are connected to each other. The core mold upper base body and the core mold lower base body are connected to each other by a second locking bolt.

[0016] Further, the core mold head includes a plurality of wire passing holes which are arranged side by side and are independent of each other.

[0017] A reinforced belt composite mold includes a mounting seat, a front half mold assembly and a rear half mold assembly. A core mold is provided in the middle of the rear half mold assembly. A die head is provided at the front end of the core mold, and the die head is installed in the front half mold assembly. A flow channel is formed among the die head, the core mold, the front half mold assembly and the rear half mold assembly. A flow channel interface is provided on one side of the composite mold and is connected to an extruder.

[0018] The advantages of the present application are:

[0019] 1. The utility model relates to a composite core mold and a die in the manufacturing process of a reinforcing belt (especially a steel fiber reinforcing belt and a steel cord reinforcing belt). In this application, the core mold is improved, and the traditional integral core mold is adjusted to a split connection structure. When processing finished products of different sizes, only the core mold head needs to be replaced, and the core mold base at the rear end does not need to be replaced (that is, the core mold base is a common part), which reduces the processing difficulty, makes the parts easy to process and reduces the part cost.

[0020] 2. This application significantly reduces the size of the wire passing channel, improves the composite stability, and reduces the wear of the reinforcing wire and the core mold.

[0021] 3. The sealing step at the connection between the core mold head and the core mold base in this application can avoid the situation of material leakage.

[0022] 4. In this application, the core mold head is the part that participates in the work during the composite of the reinforcing belt. The complete and independent core mold head structure can ensure better overall structural consistency, good strength, and is more beneficial to the stable arrangement of the reinforcing wire. And the core mold head can be processed with better precision, while the core mold base does not need to be processed with too high precision. The above-mentioned "complete" means that the core mold head does not need to be divided into two parts up and down, and "independent" means that the core mold head and the core mold base are separated into two independent parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the core mold structure of this application.

[0024] Figure 2 It is a schematic diagram of the separation of the core mold head and the core mold base of this application.

[0025] Figure 3 It is a schematic diagram of the separation of the upper core mold base and the lower core mold base of the core mold of this application.

[0026] Figure 4 It is a side view of the cross-section of the core mold of this application.

[0027] Figure 5 It is a schematic diagram of the overall die of this application.

[0028] Figure 6 It is a cross-section view of the die of this application.

[0029] Figure 7 It is a cross-section view of the existing core mold.

[0030] In the drawings:

[0031] 100 - Mandrel, 200 - Mounting base, 300 - Front half - die assembly, 400 - Rear half - die assembly, 500 - Die head, 600 - Runner interface, 101 - Mandrel matrix, 102 - Mandrel head, 103 - Wire - passing channel, 104 - Wire - passing hole, 105 - First locking bolt, 106 - Sealing step, 107 - Protrusion structure, 108 - Concave structure, 109 - Positioning pin, 110 - Upper mandrel matrix, 111 - Lower mandrel matrix, 112 - Second locking bolt. Detailed implementation manners

[0032] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some but not all of the embodiments of the present application. Generally, the components of the embodiments of the present application described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application claimed, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0034] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0035] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "upper", "vertical", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of this application is usually placed, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application. In addition, the terms "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present application, it should also be noted that unless otherwise clearly specified and defined, the terms "arrangement", "installation", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0037] Embodiment 1

[0038] As Figures 1-4 shown, a reinforced belt composite core mold includes a core mold base body 101 for wire feeding and a core mold head 102 for wire discharging. The core mold head 102 and the core mold base body 101 are structurally independent of each other. The core mold head 102 is connected to the front end of the core mold base body 101. A wire passing channel 103 is provided in the middle of the core mold base body 101, and a wire passing hole 104 is provided in the middle of the core mold head 102. The wire passing channel 103 is communicated with the wire passing hole 104. The core mold head 102 of the present application is an integral structure and can be formed by integral processing, and is a standard part (i.e., replaced when producing reinforced belts with different bandwidths and different numbers of steel wires). For different size and model processing requirements, the core mold base body 101 does not need to be replaced, and only the core mold head 102 with different wire passing hole 104 sizes needs to be replaced. The wire passing hole 104 is provided on the core mold head 102, and the length of the wire passing hole 104 is shorter than that of the existing wire passing hole 104, making wire threading more convenient, and it is easy to ensure the finish and parallelism, and can also reduce the friction between the reinforcing wire and the hole.

[0039] As Figure 3 and Figure 4 shown, the wire passing channel 103 is a through groove structure, and the height of the wire passing channel 103 is less than 10 mm. As Figure 7 shown, the cross section of the wire passing channel 103 in the prior art is trapezoidal, and the narrowest opening dimension is greater than 10 mm. When the reinforcing wire bundles are produced at high speed, large amplitudes are likely to occur. The wire passing channel 103 provided in the middle of the core mold base body 101 of the present application is relatively narrow, and its height is less than 10 mm, which can avoid large amplitudes of the reinforcing wire (reinforcing wire bundles).

[0040] The core mold head 102 and the core mold base body 101 are connected to each other by a first locking bolt 105. In addition to the locking bolt, other connection structures well known to those skilled in the art can also be used to connect the two.

[0041] A sealing step 106 is provided at the connection between the core die head 102 and the core die base body 101. A convex structure 107 is provided at one end of the core die head 102, and a concave structure 108 is provided at one end of the adjacent core die base body 101. The convex structure 107 is located in the concave structure 108 to form the sealing step 106. The sealing step 106 at the connection between the core die head 102 and the core die base body 101 can prevent material leakage.

[0042] A positioning pin 109 is further provided at one end of the core die base body 101 provided with the concave structure 108, and a positioning hole is provided at one end of the core die head 102 provided with the convex structure 107. The positioning pin 109 is inserted into the positioning hole. A positioning pin 109 is provided at the connection part between the core die head 102 and the core die base body 101, and the core die head 102 is tightened from the end where the wire enters through two bolts on the core die base body 101.

[0043] The core die base body 101 is an integral structure. The core die base body 101 in this application can be a part formed by integral processing.

[0044] The core die head 102 includes a plurality of wire passing holes 104 that are arranged side by side and are independent of each other.

[0045] Embodiment 2

[0046] As Figures 1-4 shown, a reinforced belt composite core die includes a core die base body 101 for wire feeding and a core die head 102 for wire discharging. The core die head 102 and the core die base body 101 are structurally independent of each other. The core die head 102 is connected to the front end of the core die base body 101. A wire passing channel 103 is provided in the middle of the core die base body 101, and a wire passing hole 104 is provided in the middle of the core die head 102. The wire passing channel 103 is communicated with the wire passing hole 104. The core die head 102 of this application is an integral structure and can be formed by integral processing and is a standard part (i.e., replaced when producing reinforced belts with different bandwidths and different numbers of steel wires). For different size and model processing requirements, the core die base body 101 does not need to be replaced, and only the core die head 102 with different wire passing hole 104 sizes needs to be replaced. The wire passing hole 104 is provided on the core die head 102, and the length of the wire passing hole 104 is shorter than that of the existing wire passing hole 104, making wire threading more convenient, and it is easy to ensure the finish and parallelism, and can also reduce the friction between the reinforcing wire and the hole.

[0047] As Figure 3 and Figure 4 shown, the wire passing channel 103 is a through groove structure, and the height of the wire passing channel 103 is less than 10 mm. As Figure 7As shown, the cross-section of the wire passing channel 103 in the prior art is trapezoidal, and the narrowest opening dimension is greater than 10 mm. When the reinforcing wire bundles are produced at high speed, large amplitudes are likely to occur. The wire passing channel 103 provided in the middle of the mandrel base body 101 of the present application is relatively narrow, and its height is less than 10 mm, which can avoid large amplitudes generated by the reinforcing wires (the reinforcing wire bundles).

[0048] The mandrel head 102 and the mandrel base body 101 are connected to each other through the first locking bolts 105. In addition to the locking bolts, other connection structures well-known to those skilled in the art can also be used to connect the two.

[0049] A sealing step 106 is provided at the connection between the mandrel head 102 and the mandrel base body 101. A convex structure 107 is provided at one end of the mandrel head 102, and a concave structure 108 is provided at one end of the adjacent mandrel base body 101. The convex structure 107 is located in the concave structure 108 to form the sealing step 106. The sealing step 106 at the connection between the mandrel head 102 and the mandrel base body 101 can avoid the situation of material leakage.

[0050] A positioning pin 109 is further provided at one end of the mandrel base body 101 provided with the concave structure 108, and a positioning hole is provided at one end of the mandrel head 102 where the convex structure 107 is placed. The positioning pin 109 is inserted into the positioning hole. A positioning pin 109 is provided at the connection part between the mandrel head 102 and the mandrel base body 101, and the mandrel head 102 is tightened from the end of the mandrel base body 101 in the direction where the reinforcing wire enters through two bolts.

[0051] The mandrel base body 101 includes a mandrel upper base body 110 and a mandrel lower base body 111 that are connected to each other. The mandrel upper base body 110 and the mandrel lower base body 111 are connected to each other through the second locking bolts 112. The mandrel base body 101 in the present application can be a structure that is separately processed and combined into upper and lower parts. When the upper and lower parts are combined, the processing difficulty can be reduced, and it is also more convenient for threading the wire. In addition to the locking bolts, other connection structures well-known to those skilled in the art can also be used to connect the two.

[0052] The mandrel head 102 includes a plurality of wire passing holes 104 that are arranged side by side and are independent of each other.

[0053] Embodiment 3

[0054] As Figure 5 and Figure 6As shown, the reinforced belt composite die includes a mounting base 200, a front half die assembly 300, and a rear half die assembly 400. A core die 100 as described in Embodiment 1 or Embodiment 2 is provided in the middle of the rear half die assembly 400. A die head 500 is provided at the front end of the core die 100, and the die head 500 is installed in the front half die assembly 300. A runner is formed between the die head 500, the core die 100, the front half die assembly 300, and the rear half die assembly 400. A runner interface 600 is provided on one side of the composite die and is connected to an extruder. Multiple strands of reinforcing filaments enter the core die 100 in the rear half die assembly 400, pass through the core die 100 and enter the runner. The runner interface 600 is connected to the extruder, and the molten plastic enters the runner from the runner interface 600. After wrapping the reinforcing filaments, it passes through the die head 500 and then completes the composite to form a reinforced belt.

Claims

1. A reinforced belt composite core mold, characterized in that: The invention comprises a core mold base (101) for feeding a wire and a core mold head (102) for outputting a wire, wherein the core mold head (102) and the core mold base (101) are independent of each other in structure, the core mold head (102) is connected to the front end of the core mold base (101), a wire passing channel (103) is provided in the middle of the core mold base (101), a wire passing hole (104) is provided in the middle of the core mold head (102), and the wire passing channel (103) is connected to the wire passing hole (104).

2. A reinforced belt composite core mold according to claim 1, characterized in that: The wire passing channel (103) is a through-slot structure, and the height of the wire passing channel (103) is less than 10 mm.

3. The reinforced belt composite core mold according to claim 1, characterized in that: The core mold head (102) and the core mold base (101) are connected to each other via a first locking bolt (105).

4. The reinforced belt composite core mold according to claim 1, characterized in that: A sealing step (106) is provided at the connection between the core mold head (102) and the core mold base (101); a convex structure (107) is provided at one end of the core mold head (102); and a concave structure (108) is provided at one end of the core mold base (101) adjacent thereto; the convex structure (107) is located in the concave structure (108) to form a sealing step (106).

5. A reinforced belt composite core mold according to claim 4, characterized in that: The core mold base (101) is provided with a concave structure (108) at one end thereof and is also provided with a positioning pin (109); the core mold head (102) is provided with a convex structure (107) and is placed in a positioning hole at one end thereof, and the positioning pin (109) is inserted into the positioning hole.

6. The reinforced belt composite core mold according to claim 1, characterized in that: The core mold base (101) is an integrated structure.

7. The reinforced belt composite core mold according to claim 1, characterized in that: The core mold base (101) comprises a core mold upper base (110) and a core mold lower base (111) which are connected to each other, and the core mold upper base (110) and the core mold lower base (111) are connected to each other via a second locking bolt (112).

8. The reinforced belt composite core mold according to claim 1, characterized in that: The core die head (102) comprises a plurality of wire-passing holes (104) which are distributed side by side and are independent of each other.

9. A reinforced belt composite mold, comprising a mounting seat (200), a front half mold assembly (300) and a rear half mold assembly (400), wherein a core mold (100) as claimed in any one of claims 1 to 8 is arranged in the middle of the rear half mold assembly (400), a mouth mold (500) is arranged at the front end of the core mold (100), and the mouth mold (500) is installed in the front half mold assembly (300), a flow channel is formed between the mouth mold (500), the core mold (100), the front half mold assembly (300) and the rear half mold assembly (400), and a flow channel interface (600) is arranged on one side of the composite mold to be connected to an extruder.

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