Forming device downstream of the banbury

Abstract

The utility model provides a kind of forming device after banburying machine discharging, it is related to the technical field of rubber processing device, and it includes: the feeding port of double-cone feeding assembly is connected with the material after mixing of banburying machine, the discharge port of double-cone feeding assembly is communicated with the one end of extrusion die head, the other end of extrusion die head is towards the slit of three-roll calender, the discharging side of three-roll calender is connected with slitting assembly by conveyor belt, and full-cutting machine is arranged on the side, away from three-roll calender, of slitting assembly;Edge material recovery component is arranged below slitting assembly, for sending the excess edge material back into double-cone feeding assembly, solve the technical problem of inconsistent parameters of output billet, low efficiency of half-cutting machine in prior art, achieve the technical effect of quickly changing the rubber discharged from banburying machine into flat surface, thickness uniformity sheet.

Description

Technical Field

[0001] This utility model relates to the technical field of rubber processing equipment, and in particular to a molding device after the discharge of a mixing mill. Background Technology

[0002] In the manufacturing process of electronic products, epoxy molding compounds are generally used to encapsulate and protect chips. However, during the high-temperature curing process, the epoxy resin and its additives in the epoxy molding compound are prone to generating oxidation products, which continuously adhere to the surface of the encapsulation mold and become difficult to clean after long-term accumulation. Therefore, special rubber cleaning materials have been produced. These materials are processed into sheet-like finished products of fixed sizes by rubber manufacturers and supplied to encapsulation customers. In this way, the adhesive force of rubber vulcanization and the cleaning agent inside can be used to clean the mold.

[0003] The current production process for this rubber cleaning material includes mixing, molding, and packaging. In the molding process, an open mill is used to press the mixed rubber into strips of uniform thickness using two parallel rollers. The timing of sheeting is determined manually, and then a semi-automatic cutting machine is used to cut the rubber into sheets.

[0004] However, existing equipment is difficult to meet the demand for efficient and stable production when in use; the operation process is highly dependent on the experience of the operators, resulting in poor consistency of key parameters such as temperature, thickness and width of sheet output blanks; in addition, the semi-cutting machine results in extremely low cutting efficiency, with a cutting frequency of about once per second, and the processing time of a single sheet is about 30 seconds, which cannot form efficient collaboration with upstream equipment, and the step-by-step design of the overall structure further extends the production cycle. Utility Model Content

[0005] The purpose of this utility model is to provide a forming device after the output of an internal mixer, so as to alleviate the technical problems of inconsistent parameters of the output billet and low efficiency of the semi-cutting machine in the prior art.

[0006] The forming device after the discharge of the internal mixer provided by this utility model includes: a double cone feeding assembly, an extrusion die, a three-roll calender, a strip cutting assembly, a full-cutting machine, and an edge material recycling assembly; The feed inlet of the double cone feed assembly receives the material mixed by the internal mixer, and the discharge outlet of the double cone feed assembly is connected to one end of the extrusion die. The other end of the extrusion die faces the gap of the three-roll calender. The discharge side of the three-roll calender is connected to the strip cutting assembly via a conveyor belt. A full-cutting cutter is installed on the side of the strip cutting assembly away from the three-roll calender. The edge material recycling component is located below the cutting component and is used to send excess edge material back into the double cone feeding component.

[0007] Furthermore, the double-cone feeding assembly includes a hopper and a conical feeding screw; The hopper is a hollow cavity with an opening at the top. Two tapered feeding screws are installed at an angle inside the hopper. The feed side of the two tapered feeding screws is close to the top of the hopper, and the discharge side of the two tapered feeding screws is close to the bottom of the hopper and is connected to one end of the extrusion die through an extrusion hole.

[0008] Furthermore, the extrusion die includes a feeding section, a transition section, and an extrusion section; The feed inlet of the feeding section is circular and connects to the hopper. The inner diameter of the transition section gradually decreases from the end near the feed section to the end near the discharge section. The discharge outlet of the discharge section is flat and has a thickness of 15-25 mm.

[0009] Furthermore, the three-roll calender includes three parallel pressure rolls, each of which has a cooling water channel extending along its axial direction inside.

[0010] Furthermore, the slicing assembly includes an upper blade holder, a cutting blade, and a blade pad; The upper blade holder is raised and lowered above the blade pad by a pneumatic cylinder. Several cutting blades are evenly spaced along the length of the side of the upper blade holder facing the blade pad. The diameter of the cutting blades on both sides is 150mm to 155mm, and the diameter of the cutting blade in the middle is 145mm to 147mm. The blade pad has notches at the corresponding positions on both sides of the cutting blade.

[0011] Furthermore, a pad with a diameter of 10mm to 20mm is provided between two adjacent cutting blades.

[0012] Furthermore, the full-cutting machine includes a frame and a cutting blade; A cutting blade is fixedly mounted on the frame and is driven to reciprocate by a cylinder; a conveying roller is installed below the cutting blade to cut the conveyed sheet material.

[0013] Furthermore, the edge material recycling assembly includes a conveyor belt and a drive motor. The feed end of the conveyor belt is located below both sides of the cutting assembly to receive the edge material generated during cutting. The discharge end of the conveyor belt extends to the top of the hopper, and the drive motor is connected to the drive roller of the conveyor belt.

[0014] Beneficial effects: The internal mixer discharge forming device provided by this utility model receives the mixed material from the internal mixer through a double cone feeding assembly and evenly conveys it to the extrusion die. With the flat outlet design of the extrusion die, it can initially form regular long strips of thin sheet. The subsequent three-roll calender accurately controls the material thickness through an adjustable gap structure, and combined with the hollow cooling of the equipment, the material temperature can be adjusted in real time. Compared with the open mill in the prior art that relies on the operator's experience, it significantly improves the temperature and thickness consistency of the formed material, and greatly reduces the cost and process of generating defective products and reprocessing.

[0015] Meanwhile, this device optimizes production efficiency and resource utilization through the collaboration of the strip cutting assembly and the full-cutting machine, as well as the edge material recycling assembly. The strip cutting assembly can achieve semi-cutting of different widths by adjusting the blade spacing according to customer needs, while the full-cutting machine can accurately cut sheets of the required length by controlling the feeding speed. This invention reduces raw material costs and production energy consumption, achieving efficient and energy-saving rubber molding processing. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the forming device after the discharge of the internal mixer provided in this embodiment of the utility model; Figure 2 A top view of the double cone feeding assembly in the forming device after the discharge of the internal mixer provided in this embodiment of the utility model; Figure 3 This is a schematic diagram of the extrusion die in the forming device after the material is discharged from the internal mixer, provided in an embodiment of the present invention. Figure 4 This is a schematic diagram of the strip-cutting assembly in the forming device after the internal mixer discharge provided in an embodiment of the present invention.

[0018] Icons: 1-Double cone feeding assembly; 101-Hopper; 102-Conical feeding screw; 2-Extrusion die; 201-Feeding section; 202-Transition section; 203-Discharge section; 3-Three-roll calender; 4-Strip cutting assembly; 401-Upper blade holder; 402-Cutter; 403-Blade pad; 404-Notch; 5-Full-cutting machine; 501-Frame; 502-Cutter; 6-Edge material recycling assembly; 601-Conveyor belt. Detailed Implementation

[0019] 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.

[0020] 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.

[0021] 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.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element 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. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of 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.

[0025] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0026] like Figure 1 As shown, the forming device after the discharge of the internal mixer provided by this utility model includes: a double cone feeding assembly 1, an extrusion die head 2, a three-roll calender 3, a strip cutting assembly 4, a full-cutting machine 5, and an edge material recycling assembly 6. The feed inlet of the double cone feed assembly 1 receives the material mixed by the internal mixer. The discharge outlet of the double cone feed assembly 1 is connected to one end of the extrusion die 2. The other end of the extrusion die 2 faces the gap of the three-roll calender 3. The discharge side of the three-roll calender 3 is connected to the strip cutting assembly 4 via a conveyor belt. The strip cutting assembly 4 is equipped with a full-cutting cutter 5 on the side away from the three-roll calender 3. The edge material recycling component 6 is located below the strip cutting component 4 and is used to send excess edge material back into the double cone feeding component 1.

[0027] Specifically, the double-cone feeding assembly 1 is located at the discharge port of the internal mixer to receive the rubber and its mixture transported from the internal mixer. A circular discharge port is located on one side wall of the double-cone feeding assembly 1 near the lower middle part. This circular discharge port is sealed and connected to the circular feed end of the extrusion die 2 via a flange with a sealing gasket. The extrusion die 2 is horizontally arranged, with a flat discharge port at its end furthest from the double-cone feeding assembly 1. This flat discharge port is horizontally aligned with the feed side gap between the two parallel pressure rollers of the three-roll calender 3, ensuring that the extruded long strips can directly enter the roller gap. The three pressure rollers of the three-roll calender 3 rotate horizontally in parallel and at the same speed, and their discharge... The side is equipped with an inclined or horizontal conveyor belt, and the other end of the conveyor belt is directly connected to the feed end of the strip cutting assembly 4. The strip cutting assembly 4 can achieve different widths of half-cutting by adjusting the blade spacing according to customer needs. The discharge end of the strip cutting assembly 4 is connected to the feed end of the full-cutting machine 5. The feed conveying roller of the full-cutting machine 5 is directly opposite the half-cut strip output by the strip cutting assembly 4, and the cutting blade is located above and downstream of the conveying roller. The edge material recycling assembly 6 is laid horizontally below the strip cutting assembly 4, forming a drop area for the edge material cut off on both sides, and bends upward to the double cone feeding assembly 1 to form an edge material conveying channel, which feeds the dropped edge material back into the mixing to avoid material waste.

[0028] It achieves continuous material conveying from the internal mixer to the final sheet forming, avoiding the material handling losses and interruptions caused by the dispersed arrangement of multiple devices in the existing technology; the cyclic connection design of the edge material recycling component 6 and the double cone feeding component 1 can directly reuse the excess edge material generated by the cutting component 4, reducing raw material waste; in addition, the cutting component 4 can achieve half-cutting of different widths by adjusting the cutting blade spacing according to customer needs, and the full-cutting machine 5 can accurately cut the sheet of the required length by controlling the feeding speed, which improves the stability and efficiency of the forming process and enhances the parameter consistency of the output blank.

[0029] In embodiments of this utility model, such as Figure 2As shown, the double-cone feeding assembly 1 includes a hopper 101 and conical feeding screws 102. The hopper 101 is a hollow cavity with an opening at the top. The two conical feeding screws 102 are arranged at an inclination inside the hopper 101. The feeding side of the two conical feeding screws 102 is close to the top of the hopper 101, and the discharge side of the two conical feeding screws 102 is close to the bottom of the hopper 101 and is connected to one end of the extrusion die 2 through an extrusion hole.

[0030] like Figure 3 As shown, the extrusion die 2 includes a feeding section 201, a transition section 202, and a discharge section 203. The feeding port of the feeding section 201 is circular and connects to the material bin 101. The inner diameter of the transition section 202 gradually decreases from one end near the feeding section 201 to the end near the discharge section 203. The discharge port of the discharge section 203 is flat and has a thickness of 15-25 mm.

[0031] The three-roll calender 3 includes three parallel pressure rolls, each of which has a cooling water channel extending along its axial direction inside.

[0032] Specifically, the hopper 101 is a hollow cavity with an opening at the top. The top directly serves as the feed inlet for receiving the material mixed by the internal mixer, ensuring that the material can be directly poured into the hopper. Two conical feed screws 102 are symmetrically and inclinedly arranged inside the hopper 101. Their feed side (material inlet end) is close to the top area of ​​the hopper 101, which fully receives the material falling from above in the hopper and avoids local accumulation of material in the hopper. The discharge side (material output end) of the two conical feed screws 102 converges towards the bottom of the hopper 101 and is sealed and connected to one end of the extrusion die 2 through the extrusion hole opened at the bottom of the hopper 101. The extrusion die 2 is divided into a feeding section 201, a transition section 202 and a discharge section 203 along the material conveying direction. The circular feed port of the feeding section 201 is connected to the hole at the bottom of the hopper 101. The inner diameter of the transition section 202 gradually decreases to achieve gradual compression of the material in the die. The discharge port of the discharge section 203 is flat and has a thickness of 15-25 mm, preferably 20 mm. The three rollers of the three-roll calender 3 are arranged in parallel along the horizontal direction, and a material calendering channel is formed between adjacent rollers. Each roller has a cooling water channel that runs through it along its axial direction. The two ends of the water channel extend to the outside of the roller end face to form an independent water inlet and outlet, which is convenient for connecting to an external temperature control water circuit.

[0033] Two inclined conical feeding screws 102 evenly convey the material in the hopper 101 to the bottom, avoiding material interruption or flow fluctuation caused by gravity accumulation. At the same time, the discharge side is sealed and connected to the extrusion die 2. The extrusion die 2 has a three-stage continuous action. The circular design of the feeding section 201 is adapted to the material output shape of the hopper extrusion hole. The gradual inner diameter of the transition section 202 can gradually eliminate air bubbles inside the material and improve the density. The flat discharge port of the discharge section 203 directly presses the material into long strips and thin sheets, avoiding the problem of irregular sheet shape of traditional open mills.

[0034] In embodiments of this utility model, such as Figure 4 As shown, the slicing assembly 4 includes an upper blade holder 401, a cutter 402, and a blade pad 403; the upper blade holder 401 is raised and lowered above the blade pad 403 by a pneumatic cylinder, and a number of cutters 402 are evenly spaced along its length on the side of the upper blade holder 401 facing the blade pad 403; the diameter of the cutters 402 on both sides is 150mm to 155mm, and the diameter of the cutter 402 in the middle is 145mm to 147mm; The blade pad 403 has notches 404 at the corresponding positions of the cutters 402 on both sides.

[0035] A pad with a diameter of 10mm to 20mm is provided between two adjacent cutting blades 402 and connected by bolts.

[0036] The full-cutting machine 5 includes a frame 501 and a cutter 502; the cutter 502 is fixedly mounted on the frame 501 and is driven to reciprocate by a cylinder; a conveying roller is provided below the cutter 502 for cutting the conveyed sheet.

[0037] The edge material recycling assembly 6 includes a conveyor belt 601 and a drive motor. The feed end of the conveyor belt 601 is located below both sides of the cutting assembly 4 and is used to receive the edge material generated by cutting. The discharge end of the conveyor belt 601 extends to the top of the hopper 101, and the drive motor is connected to the drive roller of the conveyor belt 601.

[0038] Specifically, the upper blade holder 401 is connected to the equipment frame via pneumatic cylinders symmetrically arranged on both sides, and can be raised and lowered to be suspended directly above the blade pad 403, forming a vertical cutting structure; several cutters 402 are fixed at even intervals along the length of the bottom surface of the upper blade holder 401 facing the blade pad 403, wherein the cutters 402 located on the outermost sides of the upper blade holder 401 have a diameter of 150mm to 155mm (circular cutters 402, preferably 150mm), and the remaining intermediate cutters 402 between the outermost cutters 402 are straight. The blade holder 402 has a diameter of 145mm to 147mm (preferably 146mm), and a pad with a diameter of 10mm to 20mm is sandwiched between each pair of adjacent blades 402. The pad is fixedly connected to the bottom surface of the upper blade holder 401 by a through bolt. The spacing between the blades 402 can be adjusted by replacing the pads with different diameters. The upper surface of the blade pad 403 corresponds one-to-one with the blades 402, and a notch 404 is only provided directly below the blades 402 on both sides. The depth of the notch 404 is adapted to the cutting requirements of the blades 402 on both sides. The notch 404 allows the blades 402 on both sides to cut into the blade pad 403 by 3mm, which can then cut the rubber. However, the middle blade 402, due to its smaller diameter, is 1mm away from the blade pad and will not completely cut the rubber, resulting in a partial cut. Excess material after cutting on both sides is recycled by the material recycling assembly 6.

[0039] The cutting blade 502 of the full-cutting machine 5 is vertically slidably connected to the middle of the frame 501 via a guide rail. The top of the cutting blade 502 is fixedly connected to the horizontally set cylinder piston rod. Driven by the cylinder, it realizes the up-and-down reciprocating cutting action to cut the semi-cut strip material in the length direction and complete the forming.

[0040] The strip cutting assembly 4 completely cuts off the edge material through the large-diameter cutters 402 on both sides and the notches 404 of the cutter pads 403, while the small-diameter cutter 402 in the middle only performs half-cutting of the material. This achieves the simultaneous operation of "separation of half-cut strips and edge material" and avoids the tediousness of multiple cutter adjustments required by traditional cutting. At the same time, the bolt connection pads between adjacent cutters 402 can be flexibly replaced with different diameter specifications of 10mm to 20mm to meet the customer's needs for half-cut strips of different widths, solving the problem of time-consuming adjustment of cutting dimensions in traditional equipment.

[0041] Secondly, the full-cutting machine 5 uses a cylinder to drive the cutting blade 502 for reciprocating cutting, which improves efficiency and ensures consistent cutting dimensions compared to the existing technology of half-cutting machines that only cut once per second and require 30 seconds for a single sheet.

[0042] Based on the above embodiments, the specific working process of the forming device after the discharge of the internal mixer provided by this utility model is as follows: The mixed material from the internal mixer is poured into the hopper 101. Two inclined conical feed screws 102 rotate to transport the rubber, which is then fed into the extrusion die 2 through a hole. In the extrusion die 2, the material is finally extruded into a long sheet from the flat discharge section 203. The sheet directly enters the gap between the rollers of the three-roll calender 3, which presses the sheet to the specified thickness.

[0043] Next, the calendered sheet is conveyed to the cutting assembly 4, where the cutter 402 cuts the sheet into semi-cut strips. These semi-cut strips are then conveyed to the full-cutting machine 5, where the cutter 502, driven by a cylinder, reciprocates and, in conjunction with the feeding speed of the lower conveyor rollers, cuts the semi-cut strips into sheets of the appropriate size for supply to the packaging customer. This allows the adhesive force of the rubber vulcanization and the cleaning agent inside to clean the mold.

[0044] In addition, the edge material generated by the cutting assembly 4 falls onto the lower conveyor belt 601, which transports the edge material from below the cutting assembly 4 to the hopper 101, thus realizing the recycling of edge material.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A molding device after a banburying machine discharge, characterized by, include: Double cone feeding assembly (1), extrusion die (2), three-roll calender (3), strip cutting assembly (4), full-cutting machine (5) and edge recycling assembly (6); The feed inlet of the double cone feeding assembly (1) receives the material mixed by the internal mixer. The discharge outlet of the double cone feeding assembly (1) is connected to one end of the extrusion die (2). The other end of the extrusion die (2) faces the gap of the three-roll calender (3). The discharge side of the three-roll calender (3) is connected to the strip cutting assembly (4) via a conveyor belt. The strip cutting assembly (4) is equipped with the full-cutting machine (5) on the side away from the three-roll calender (3). The edge material recycling component (6) is located below the cutting component (4) and is used to send excess edge material back into the double cone feeding component (1).

2. The forming device after the discharge from the internal mixer according to claim 1, characterized in that, The double cone feeding assembly (1) includes a hopper (101) and a cone-shaped feeding screw (102). The hopper (101) is a hollow cavity with an opening at the top. Two tapered feeding screws (102) are arranged at an inclination inside the hopper (101). The feeding side of the two tapered feeding screws (102) is close to the top of the hopper (101), and the discharge side of the two tapered feeding screws (102) is close to the bottom of the hopper (101) and is connected to one end of the extrusion die (2) through the extrusion hole.

3. The forming device after the discharge from the internal mixer according to claim 2, characterized in that, The extrusion die (2) includes a feeding section (201), a transition section (202) and a discharge section (203); The feed inlet of the feed section (201) is circular and connects to the hopper (101). The inner diameter of the transition section (202) gradually decreases from one end near the feed section (201) to the other end near the discharge section (203). The discharge outlet of the discharge section (203) is flat and has a thickness of 15-25 mm.

4. The forming device after the discharge from the internal mixer according to claim 1, characterized in that, The three-roll calender (3) includes three parallel pressure rolls, each of which has a cooling water channel extending along its axial direction inside.

5. The forming device after the discharge from the internal mixer according to claim 1, characterized in that, The slicing assembly (4) includes an upper blade holder (401), a cutter (402), and a blade pad (403). The upper blade holder (401) is raised and lowered above the blade pad (403) by a pneumatic cylinder. A plurality of cutting blades (402) are evenly spaced along the length of the side of the upper blade holder (401) facing the blade pad (403). The diameter of the cutting blades (402) on both sides is 150mm to 155mm, and the diameter of the cutting blade (402) in the middle is 145mm to 147mm. The blade pad (403) has notches (404) at corresponding positions on both sides of the cutter (402).

6. The forming device after the discharge of the internal mixer according to claim 5, characterized in that, The two adjacent cutting knives (402) are provided with a gasket with a diameter of 10-20 mm connected by bolts.

7. The forming device after the discharge of the internal mixer according to claim 1, characterized in that, The full-cutting machine (5) comprises a rack (501) and a cutting knife (502). The cutting knife (502) is fixedly arranged on the rack (501) and reciprocally moves by being driven by a gas cylinder; a conveying roller is arranged below the cutting knife (502) and is used for conveying the sheet material.

8. The forming device after the discharge of the internal mixer according to claim 2, characterized in that, The edge material recycling assembly (6) comprises a conveying belt (601) and a driving motor; the feeding end of the conveying belt (601) is located below both sides of the slitting assembly (4) and is used for receiving the edge material generated by cutting; the discharging end of the conveying belt (601) extends to the top of the bin (101); and the driving motor is connected with the transmission roller of the conveying belt (601).

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