Extruder capable of conveniently adjusting position of machine head

Abstract

The invention relates to the technical field of plastic forming extruders, in particular to an extruder capable of conveniently adjusting the position of a machine head, the extruder comprises a machine body and a machine head mold, a connecting mechanism is further arranged between the machine body and the machine head mold, and two parallel guide plates are arranged on the outer side face of the machine head mold at intervals; the connecting mechanism comprises limiting plates, connecting pipes, flange plates, adjusting plates, adjusting screws, connecting plates, vertical rods and moving plates, and the limiting plates are arranged on the two sides of each guide plate respectively; two ends of the connecting pipe are respectively connected with the machine body and the machine head mold through flange plates; the adjusting plate is arranged on the side face of the limiting plate, and the adjusting screw penetrates through a threaded hole in the adjusting plate and then is attached to the surface of the machine head mold. The connecting mechanism between the machine body and the machine head mold of the extruder is in flexible connection, the position of the machine head mold can be conveniently adjusted, and the working efficiency is improved; the connecting mechanism is resistant to high temperature and high pressure, long in service life and good in heat preservation performance, a heater is not needed, and cost is saved.

Description

Technical Field

[0001] The invention relates to the technical field of plastic forming, in particular to an extruder with convenient adjustment of die head position. Background Art

[0002] In the existing extruders, the machine body and the die are mostly hard-connected. The machine body and the die are integrated, and the die cannot move independently. When the position of the die needs to be adjusted, the entire extruder can only be adjusted. The extruder is very heavy, and the adjustment is time-consuming and labor-intensive, which affects the production progress.

[0003] There is also a steel wire hose that connects the machine body and the machine head mold. The steel wire hose is a hose made of rubber wrapped steel wire. It has high hardness and low bending degree. High temperature will accelerate the aging of rubber and is prone to leakage. It is not suitable for long-term high temperature and high pressure environment. In addition, the steel wire hose has poor thermal insulation performance and needs to be heated by a heater.

[0004] The invention patent with authorization announcement number CN 102126283 B provides an extruder die head calibrator, which can facilitate the calibration of the die head. The calibrator includes a core mold connecting part, and at least two unfolding positioning structures are evenly distributed along the circumference of the core mold connecting part. One end of the unfolding positioning structure is movably connected to the control structure to form a connecting end, and the other end forms a positioning end. When the control structure drives the connecting end of the unfolding positioning structure, each positioning end is separated from each other and opens at equal angles with the axis of the core mold connecting part as the reference line. Through the opened positioning end, it is possible to accurately and quickly determine whether the gap between the mouth mold and the core mold is uniform. If it is not uniform, the core mold position can be adjusted accordingly through the gap adjustment screw on the mouth mold to make the above gap uniform.

[0005] In the process of realizing the present invention, the inventors found that the prior art has at least the following problems: 1. For the one-piece extruder, it is inconvenient to adjust the position of the head mold, the metal connection has poor thermal insulation performance, and a heater needs to be installed, which increases the cost; 2. The extruder that uses a steel wire hose to connect the body and the head mold has a limited adjustment range and a short life; 3. There is no better solution for other technologies related to the position adjustment of the extruder head mold. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention develops an extruder with convenient head position adjustment. The connecting mechanism between the body of the extruder and the head mold is a soft connection, and the position of the head mold can be conveniently adjusted, thereby improving work efficiency; the connecting mechanism is resistant to high temperature and high pressure and has a long service life; the connecting mechanism has good thermal insulation performance and does not require the use of a heater, thereby saving costs.

[0007] The technical solution to the technical problem solved by the present invention is as follows: an embodiment of the present invention provides an extruder for conveniently adjusting the position of a die head, comprising a fuselage and a die head mold; a connecting mechanism is further provided between the fuselage and the die head mold; two parallel guide plates are spaced apart on the outer side of the die head mold, and the guide plates are annular; the connecting mechanism comprises a limit plate, a connecting pipe, a flange plate, an adjustment plate, an adjustment screw, a connecting plate, a vertical rod, and a movable plate; a limit plate is provided on both sides of each guide plate, the limit plate is annular, the limit plate is fitted with the guide plate, and the inner circle diameter of the limit plate is larger than the inner circle diameter of the guide plate; the two ends of the connecting pipe are respectively The fuselage and the machine head mold are connected through a flange plate; an adjustment plate is arranged on the side of the limit plate, the adjustment plate connects four limit plates, four adjustment plates are arranged evenly around the center line of the limit plate, a through threaded hole is arranged in the center of the adjustment plate, the threaded hole passes through the center line of the machine head mold, and the adjustment screw passes through the threaded hole on the adjustment plate and fits with the surface of the machine head mold; the upper end of the vertical rod is connected to the limit plate, and the lower end is connected to the horizontal movable plate, the movable plate is provided with a long hole along the length direction of the fuselage, and the connecting plate is provided with threaded holes corresponding to the long holes on the movable plate, the movable plate is fixed to the connecting plate by screws, and the connecting plate is connected to the fuselage.

[0008] As an optimization, the head mold is cylindrical, the guide plate is parallel to the end face of the head mold, and the two guide plates are symmetrically arranged relative to the center of gravity of the head mold.

[0009] As an optimization, four vertical rods are provided.

[0010] As an optimization, the connecting pipe comprises, from inside to outside, a polytetrafluoroethylene layer, a spiral steel wire layer, a fluororubber layer, a steel wire braided layer, and a silicone protective layer.

[0011] As an optimization, the spiral steel wire layer is provided with a spiral steel wire, and the steel wire braided layer is provided with a woven steel wire mesh.

[0012] As an optimization, the spiral steel wires of the spiral steel wire layer are wrapped in polytetrafluoroethylene or fluororubber.

[0013] As an optimization, the connecting mechanism also includes a heat-insulating layer, in which heat-insulating cotton is arranged, and the heat-insulating layer wraps the connecting pipe.

[0014] The effects provided in the summary of the invention are only the effects of the embodiments, rather than all the effects of the present invention. The above technical solution has the following advantages or beneficial effects:

[0015] 1. The two ends of the connecting pipe are respectively connected to the fuselage and the head mold. The connecting pipe is a hose. The head mold is clamped by a limit plate. The limit plate can limit the freedom of the head mold in the length direction of the fuselage. The position of the head mold along the vertical direction and the width direction of the fuselage can be adjusted by rotating the adjustment screw. The position of the head mold along the length direction of the fuselage can be adjusted by adjusting the position of the movable plate on the connecting plate. The connection mechanism between the body of the extruder and the head mold is a soft connection. The position of the head mold can be easily adjusted, thereby improving work efficiency.

[0016] 2. The connecting pipe is provided with a polytetrafluoroethylene layer, a spiral steel wire layer, a fluororubber layer, a steel wire braided layer, and a silicone protective layer from the inside to the outside. The polytetrafluoroethylene layer can be used safely in the temperature range of -60°C to 260°C, can withstand a pressure of 1.6Mpa, and has stable performance and corrosion resistance. In addition, due to the low friction coefficient of polytetrafluoroethylene, the high-temperature molten material will not stick to the inner wall of the pipe, which improves the fluid delivery capacity and reduces energy loss. The spiral steel wire layer can provide skeleton support, so that the connecting pipe has good tensile and compressive properties, can withstand large external forces, and is not easy to be broken or flattened. The fluororubber layer is a polymer elastomer that can withstand a high temperature of 260°C and has many advantages such as anti-aging, high temperature resistance, wear resistance, corrosion resistance, and good sealing. The steel wire braided layer is a mesh structure formed by winding and weaving multiple layers of steel wires, which can improve the strength of the connecting pipe. The silicone protective layer has good flexibility and can protect the connecting pipe from mechanical damage and chemical corrosion. When the high-temperature molten material flows through the inside of the connecting pipe, the polytetrafluoroethylene layer contacts the fluid. The polytetrafluoroethylene layer has poor thermal conductivity and can effectively keep warm. The connecting pipe does not require a heater and can ensure the temperature stability of the internal fluid.

[0017] 3. Wrapping the outer part of the connecting pipe with an insulation layer can further improve the insulation performance of the connecting pipe and can isolate and protect the connecting pipe.

[0018] 4. By arranging the two guide plates symmetrically relative to the center of gravity of the die head, the weight of the die head can be released vertically to the limit plate to avoid shear force and make the force more reasonable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of an embodiment of the present invention.

[0020] Figure 2 This is a front view of an embodiment of the present invention.

[0021] Figure 3 for Figure 1 A partial enlarged view of area A.

[0022] Figure 4 It is a front view of a die head in one embodiment of the present invention.

[0023] Figure 5 for Figure 2 A partial enlarged view of area B in the middle.

[0024] Figure 6 It is a front view of a connecting mechanism in one embodiment of the present invention.

[0025] Figure 7 It is a three-dimensional diagram of a connecting mechanism in one embodiment of the present invention.

[0026] Figure 8 The figure is an exploded view of a connecting mechanism in one embodiment of the present invention.

[0027] Fig. 9 The figure is a schematic diagram of the structure of a connecting pipe in one embodiment of the present invention.

[0028] Among them: fuselage 1, head mold 2, connecting mechanism 3, guide plate 21, limit plate 31, connecting pipe 32, insulation layer 33, flange plate 34, adjustment plate 35, adjustment screw 36, connecting plate 37, vertical rod 38, movable plate 39, polytetrafluoroethylene layer 321, spiral steel wire layer 322, fluororubber layer 323, steel wire braided layer 324, silicone protective layer 325. DETAILED DESCRIPTION

[0029] In order to clearly illustrate the technical features of the present invention, the present invention is described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0030] Figures 1 to 9 As an embodiment of the present invention, Figure 1 As shown, an extruder with convenient adjustment of the die head position comprises a body 1 and a die head mold 2, and a connecting mechanism 3 is also provided between the body 1 and the die head mold 2.

[0031] like Figure 4 As shown, two parallel guide plates 21 are spaced apart on the outer side of the die head mold 2, and the guide plates 21 are annular.

[0032] like Figures 6 to 8As shown, the connecting mechanism 3 includes a limit plate 31, a connecting pipe 32, a flange plate 34, an adjustment plate 35, an adjustment screw 36, a connecting plate 37, a vertical rod 38, and a movable plate 39. The limit plate 31 is respectively arranged on both sides of each guide plate 21. The limit plate 31 is annular, and the limit plate 31 fits the guide plate 21. The inner circle diameter of the limit plate 31 is larger than the inner circle diameter of the guide plate 21; the two ends of the connecting pipe 32 are respectively connected to the fuselage 1 and the head mold 2 through the flange plate 34; the adjustment plate 35 is arranged on the side of the limit plate 31, and the adjustment plate 35 connects the four limit plates 31. Four plates 35 are evenly arranged along the center line of the limit plate 31. A through threaded hole is arranged in the center of the adjustment plate 35. The threaded hole passes through the center line of the head mold 2. The adjustment screw 36 passes through the threaded hole on the adjustment plate 35 and fits with the surface of the head mold 2. The upper end of the vertical rod 38 is connected to the limit plate 31, and the lower end is connected to the horizontal moving plate 39. The moving plate 39 is provided with a long hole along the length direction of the fuselage 1. The connecting plate 37 is provided with a threaded hole corresponding to the long hole on the moving plate 39. The moving plate 39 is fixed to the connecting plate 37 by screws, and the connecting plate 37 is connected to the fuselage 1. The head mold 2 is cylindrical, and the guide plate 21 is parallel to the end face of the head mold 2. Four vertical rods 38 are arranged.

[0033] The two ends of the connecting pipe 32 are respectively connected to the fuselage 1 and the head mold 2 through flange plates 34. The connecting pipe 32 is a hose. The head mold 2 is clamped by a limiting plate 31. The limiting plate 31 can limit the freedom of the head mold 2 in the length direction of the fuselage 1. The rotating adjustment screw 36 can adjust the position of the head mold 2 along the vertical direction and the width direction of the fuselage 1. By adjusting the position of the movable plate 39 on the connecting plate 37, the position of the head mold 2 along the length direction of the fuselage 1 can be adjusted. The connection mechanism between the body and the head mold of the extruder is a soft connection, and the position of the head mold can be easily adjusted, thereby improving work efficiency.

[0034] The connecting mechanism 3 further includes a heat-insulating layer 33, in which heat-insulating cotton is arranged, and the heat-insulating layer 33 wraps the connecting pipe 32. Wrapping the heat-insulating layer 33 outside the connecting pipe 32 can further improve the heat-insulating performance of the connecting pipe 32, and can isolate and protect the connecting pipe 32.

[0035] like Fig. 9As shown, the connecting pipe 32 is composed of a polytetrafluoroethylene layer 321, a spiral steel wire layer 322, a fluororubber layer 323, a steel wire braid layer 324, and a silicone protective layer 325 from the inside to the outside. The spiral steel wire layer 322 is provided with a spiral steel wire, and the steel wire braid layer 324 is provided with a woven steel wire mesh. The spiral steel wire of the spiral steel wire layer 322 is wrapped in polytetrafluoroethylene or fluororubber. The polytetrafluoroethylene layer 321 can be used safely in the temperature range of -60°C to 260°C, can withstand a pressure of 1.6Mpa, and has stable performance and corrosion resistance. In addition, due to the low friction coefficient of polytetrafluoroethylene, high-temperature molten material will not stick to the inner wall of the pipeline, which improves the fluid conveying capacity and reduces energy loss. The spiral steel wire layer 322 can provide skeleton support, so that the connecting pipe 32 has good tensile and compressive properties, can withstand large external forces, and is not easily broken or flattened. The fluororubber layer 323 is a polymer elastomer that can withstand a high temperature of 260°C and has many advantages such as anti-aging, high temperature resistance, wear resistance, corrosion resistance, and good sealing. The steel wire braided layer 324 is a mesh structure formed by winding and braiding multiple layers of steel wires, which can improve the strength of the connecting pipe 32. The silicone protective layer 325 has good flexibility and can protect the connecting pipe 32 from mechanical damage and chemical corrosion.

[0036] When the high-temperature molten material flows through the interior of the connecting tube 32, the polytetrafluoroethylene layer 321 contacts the fluid. The polytetrafluoroethylene layer 321 has poor thermal conductivity and can effectively keep warm. The connecting tube 32 does not need to use a heater, and the temperature of the internal fluid can be kept stable.

[0037] In summary, the connecting tube 32 has the following advantages: 1. Small fluid resistance and fast flow rate; 2. Smooth inner wall and easy to clean; 3. High temperature and high pressure resistance; 4. Soft and easy to bend, the head mold 2 can adjust the position in a wide range, reducing the adjustment time and improving production efficiency; 5. High strength, good toughness, not easy to leak; 6. No heater is required, saving energy and cost. It can be further known that the connecting mechanism 3 is resistant to high temperature and high pressure, has a long service life, good thermal insulation performance, does not require the use of a heater, and saves costs.

[0038] Although the above describes the specific implementation mode of the invention in conjunction with the drawings, it is not intended to limit the scope of protection of the invention. Based on the technical solution of the present invention, various modifications or variations that can be made by those skilled in the art without creative work are still within the scope of protection of the present invention.

Claims

1. An extruder with convenient head position adjustment, comprising a body (1) and a head mold (2), characterized in that: A connecting mechanism (3) is also provided between the machine body (1) and the machine head mold (2). Two parallel guide plates (21) are provided at intervals on the outer side of the machine head mold (2). The guide plates (21) are annular. The connecting mechanism (3) comprises a limit plate (31), a connecting pipe (32), a flange plate (34), an adjustment plate (35), an adjustment screw (36), a connecting plate (37), a vertical rod (38), and a movable plate (39). One limit plate (31) is provided on both sides of each guide plate (21). The limit plate (31) is annular. The limit plate (31) fits the guide plate (21). The inner diameter of the limit plate (31) is larger than the inner diameter of the guide plate (21). The two ends of the connecting pipe (32) are connected to the machine body (1) and the machine head mold (2) respectively through the flange plates (34). The adjustment plate (35) is provided on both sides of each guide plate (21). The adjusting plate (35) is arranged on the side of the limiting plate (31), the adjusting plate (35) is connected to the four limiting plates (31), and four adjusting plates (35) are evenly arranged along the center line of the limiting plate (31). A through threaded hole is arranged at the center of the adjusting plate (35), and the threaded hole passes through the center line of the machine head mold (2). The adjusting screw (36) passes through the threaded hole on the adjusting plate (35) and fits with the surface of the machine head mold (2); the upper end of the vertical rod (38) is connected to the limiting plate (31), and the lower end is connected to the horizontal moving plate (39), and the moving plate (39) is provided with a long hole along the length direction of the machine body (1), and the connecting plate (37) is provided with a threaded hole corresponding to the long hole on the moving plate (39), and the moving plate (39) is fixed to the connecting plate (37) by screws, and the connecting plate (37) is connected to the machine body (1).

2. An extruder with convenient head position adjustment according to claim 1, characterized in that: The die head mold (2) is cylindrical, the guide plate (21) is parallel to the end surface of the die head mold (2), and the two guide plates (21) are symmetrically arranged relative to the center of gravity of the die head mold (2).

3. The extruder with convenient head position adjustment according to claim 1, characterized in that: Four vertical rods (38) are provided.

4. The extruder with convenient head position adjustment according to claim 1, characterized in that: The connecting tube (32) comprises, from the inside to the outside, a polytetrafluoroethylene layer (321), a spiral steel wire layer (322), a fluororubber layer (323), a steel wire braided layer (324), and a silicone protective layer (325).

5. The extruder with convenient head position adjustment according to claim 4, characterized in that: The spiral steel wire layer (322) is provided with spiral steel wires, and the steel wire braided layer (324) is provided with a braided steel wire mesh.

6. The extruder with convenient head position adjustment according to claim 5, characterized in that: The spiral steel wires of the spiral steel wire layer (322) are wrapped in polytetrafluoroethylene or fluororubber.

7. The extruder with convenient head position adjustment according to claim 1, characterized in that: The connecting mechanism (3) further comprises a heat-insulating layer (33), heat-insulating cotton is arranged in the heat-insulating layer (33), and the heat-insulating layer (33) wraps the connecting pipe (32).

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