Adjustable extruder head structure

Abstract

The invention belongs to the technical field of heat insulation strip production equipment, and particularly provides an adjustable extruder head structure which comprises an extrusion barrel internally provided with a rotary extrusion rod, one end of the extrusion barrel is fixedly connected with a die body, a fixing shaft is arranged on the side, close to the extrusion rod, of the die body, and a check ring is rotatably connected to the fixing shaft; the check ring is connected between the extrusion cylinder and the die body in a dynamic sealing mode, a gear ring is arranged on the outer portion of the check ring in the circumferential direction, the gear ring is in meshing transmission with a driving gear fixedly connected to the output end of a micro motor, the micro motor is electrically connected to a controller, a discharging hole is formed in the check ring, extrusion holes of different shapes are formed in the die body, and the extrusion holes are communicated with one another. Miniature electromagnetic valves electrically connected to the controller are fixed to the ends of the two sides of the channel, the extrusion holes communicate with a vacuum shaping system through vacuum drainage channels, exhaust valves are arranged on the sides, close to the extrusion holes, of the vacuum drainage channels, and the vacuum shaping system and the exhaust valves are electrically connected to the controller. The produced heat insulation strip can be replaced without shutdown.

Description

Technical Field

[0001] The invention relates to the technical field of thermal insulation strip production equipment, and in particular to an adjustable extruder head structure. Background Art

[0002] The thermal insulation strips used in thermally-insulated aluminum doors and windows can block the heat transfer between the main profiles of the doors and windows, thereby reducing the heat conduction between different spaces and playing a role in heat preservation. According to the main material, the thermal insulation strips are divided into two types: PVC type and PA66 type (also known as polyamide 66 or nylon 66). Since PA66 is significantly better than PVC type in basic performance indicators such as toughness and thermal insulation effect, PVC type thermal insulation strips are basically eliminated by the market.

[0003] The production and molding of thermal insulation strips requires the use of an extruder. The pre-treated raw materials are fed into the extruder, and through the rotation and extrusion of the screw, they are extruded from the mold to form thermal insulation strips with a certain shape and size. In order to obtain thermal insulation strips of different shapes, the mold of the extruder needs to be adjusted. When replacing the mold, it is necessary to stop the machine, disassemble the original mold, install a new mold, and then resume production. This process is very cumbersome and affects production efficiency. Summary of the invention

[0004] In view of the above-mentioned defects, the present invention provides an adjustable extruder head structure, which can switch to output insulation strips of different shapes without stopping the machine, thereby solving the problem of residual material.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an adjustable extruder head structure, comprising an extrusion barrel and a die body, wherein a rotatable extrusion rod is arranged in the extrusion barrel, one end of the extrusion barrel near the rod head of the extrusion rod is fixedly connected to the die body, a fixed shaft is arranged in the middle of the die body near the extrusion rod, a retaining ring is rotatably connected to the fixed shaft, the retaining ring is dynamically sealed and connected between the extrusion barrel and the die body, a gear ring is circumferentially arranged on the outer circumference of the retaining ring, the gear ring is meshed with a driving gear fixedly connected to the output end of a micro motor, the micro motor is electrically connected to a controller, a discharge hole is opened on the retaining ring, a plurality of extrusion holes of different shapes are arranged on the die body, a connected channel is arranged between any two of the extrusion holes, micro solenoid valves electrically connected to the controller are fixed on both sides of the channel, any of the extrusion holes is provided with a vacuum drainage channel connected to a vacuum shaping system, an exhaust valve is arranged on the side of the vacuum drainage channel close to the extrusion hole, and the vacuum shaping system and the exhaust valve are both electrically connected to the controller.

[0006] As a further improvement of the present invention, the mold body is formed by sealing and fixing a front mold body and a rear mold body, and the channels and vacuum drainage channels connecting the extrusion holes are formed by sealingly closing the mold through a semi-annular groove body arranged on the front mold body and the rear mold body.

[0007] As a further improvement of the present invention, both ends of the semi-annular groove bodies on the front mold body and the rear mold body are provided with semi-annular threads for fixing the exhaust valve and the micro solenoid valve.

[0008] As a further improvement of the present invention, a mounting groove is provided in the middle of the rod head of the extrusion rod, a first bearing is fitted in the mounting groove, and an inner ring hole of the first bearing matches the fixed shaft.

[0009] As a further improvement of the present invention, a sealing ring is fixedly connected to the fixed shaft located at the outer end of the mounting groove.

[0010] As a further improvement of the present invention, the tooth roots of the outer edge gear ring of the retaining ring are flush with the outer edge of the extrusion cylinder.

[0011] As a further improvement of the present invention, the micro motor is fixedly connected to a motor base arranged outside the extrusion cylinder.

[0012] As a further improvement of the present invention, the shape of the discharge hole is fan-shaped.

[0013] As a further improvement of the present invention, an L-shaped fixing frame is fixedly connected to one side of the extrusion barrel outside the barrel close to the mold body, and a fixing plate is fixedly connected to one side of the mold body close to the extrusion barrel, and the fixing plate and the fixing frame are connected by bolts.

[0014] Beneficial effects of the present invention: 1. By setting extrusion holes of different shapes on the die body, the die body can produce insulation strips of different shapes. By setting an adjustable retaining ring with a discharge hole at the die body feed, the shape of the insulation strip to be produced can be selected without stopping the machine.

[0015] 2. Each extrusion hole is connected through a channel, and an adjustable micro solenoid valve is set in the channel, which can arbitrarily adjust and select the connected extrusion hole. All channels can form a vacuum negative pressure in a short time through the vacuum shaping system, and the raw materials in the original production extrusion hole can be sucked into the extrusion hole to be produced, which can prevent the raw materials in the original production extrusion hole from solidifying and clogging, affecting the next replacement, and at the same time can improve the utilization rate of the raw materials.

[0016] 3. The vacuum shaping system used is a necessary device for cooling and shaping the insulation strips during the production of the insulation strips. It can be directly connected without adding any additional equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an axonometric diagram of the adjustable extruder head structure of the present invention; Figure 2 yes Figure 1 A is an enlarged schematic diagram; Figure 3 Schematic diagram of the internal structure of the extruder head; Figure 4 yes Figure 3 The enlarged schematic diagram of point B in FIG. Figure 5 It is the axonometric view of the retaining ring structure; Figure 6 This is a schematic diagram of the front view of the extruder head; Figure 7 It is a schematic diagram of the internal structure of the model.

[0018] In the figure: 1-extrusion cylinder, 2-micro motor, 3-mold body, 300-rear mold body, 301-front mold body, 302-connecting plate, 303-first extrusion hole, 304-second extrusion hole, 305-third extrusion hole, 306-first channel, 307-second channel, 308-third channel, 309-first vacuum drainage channel, 310-second vacuum drainage channel, 311-third vacuum drainage channel; 4-fixed plate, 5-fixed frame, 6-motor base, 7-driving gear, 8-retaining ring, 800-gear ring, 801-discharging hole; 9-extrusion rod, 900-rod head, 901-installing groove; 10-sealing ring, 11-first bearing, 12-fixed shaft. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific examples described herein are only used to explain the present invention and are not intended to limit the present invention. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only referenced to the directions of the accompanying drawings. Therefore, the directional terms used are used to illustrate and are not used to limit the present invention. In addition, in all embodiments, the same figure numerals represent the same elements.

[0020] See also Figure 1 and Figure 3 The present invention provides an adjustable extruder head structure, including an extrusion barrel 1, which is horizontally arranged, and has an opening at one end thereof, and the side of the extrusion barrel 1 away from the opening is connected to a feeding end. An extrusion rod 9 is arranged inside the extrusion barrel 1, and the extrusion rod 9 is a rod body structure with a spiral surface. A driving device is arranged at one end of the extrusion rod 9 away from the opening of the extrusion barrel 1, and the output end of the driving device is fixed to the end of the extrusion rod 9.

[0021] As a further explanation of this embodiment, the driving device driving the extrusion rod 9 to rotate inside the extrusion barrel 1 and the feeding of the extrusion barrel 1 are both well-known technologies in the prior art and are not described in detail here.

[0022] See also Figure 1 , Figure 3 and Figure 4 A rod head 900 is provided on one side of the extrusion rod 9 close to the extrusion barrel 1, and the shape of the rod head 900 is a truncated cone. A mounting groove 901 is provided at the center of the end of the rod head 900, and the mounting groove 901 is a circular groove body.

[0023] The first bearing 11 is arranged in the installation groove 901, and the first bearing 11 is fixed in the installation groove 901 by interference fit. The inner ring hole of the first bearing 11 is matched with one end of the fixed shaft 12, and the two are fixedly connected by interference fit. The other end of the fixed shaft 12 is integrally formed with the mold body 3, and the fixed shaft 12 is arranged at the center of the mold body 3.

[0024] The fixed shaft 12 is also sleeved with a sealing ring 10, and one end of the sealing ring 10 close to the mold body 3 is flush with the notch end of the installation groove 901. The outer edge of the sealing ring 10 is dynamically sealed with the installation groove 901. The inner side of the sealing ring 10 is fixedly connected to the fixed shaft 12 by interference fit.

[0025] As a further explanation of this embodiment, by providing a sealing ring 10 at the notch of the mounting groove 901, it is possible to prevent materials from entering the mounting groove 901 and affecting the rotation of the bearing.

[0026] See also Figures 1 to 5 A retaining ring 8 is also provided between the die body 3 and the extrusion cylinder 1. A mounting hole is provided at the center of the retaining ring 8, and the retaining ring 8 is dynamically sealed and connected to the fixed shaft 12 through the mounting hole. A discharge hole 801 is provided on the retaining ring 8, and the shape of the discharge hole 801 is a sector with a central angle of 60°. The number of discharge holes 801 on the retaining ring 8 can be set to 1 or 2 as required.

[0027] The outer edge of the retaining ring 8 is a circumferentially arranged gear ring 800 structure. The tooth root of the gear ring 800 on the outer edge of the retaining ring 8 is flush with the outer edge of the barrel of the extruder barrel 1. The gear ring 800 on the outer edge of the retaining ring 8 is meshed with the driving gear 7, and the driving gear 7 is fixedly connected to the output end of the micro motor 2, the micro motor 2 is fixedly connected to the motor base 6, and the motor base 6 is fixedly connected to the barrel of the extruder barrel 1.

[0028] As a further explanation of this embodiment, the micro motor 2 can drive the gear 7 to rotate, thereby causing the retaining ring 8 meshing with the driving gear 7 to rotate, and the position of the discharge hole 801 on the retaining ring 8 can be adjusted.

[0029] See also Figures 1 to 7 The outer edge of the mold body 3 is the same size as the outer edge of the extrusion tube 1. The upper and lower sides of the outer edge of the mold body 3 near one end of the extrusion tube 1 are welded with a fixing plate 4, and the fixing plate 4 is provided with a first fixing hole.

[0030] A fixing frame 5 is welded on the upper and lower sides of the extrusion cylinder 1 . The fixing frame 5 is in an “L” shape. The structure of the fixing frame 5 along the radial direction of the extrusion cylinder 1 is a vertical plate. The height of the vertical plate is higher than the tooth height of the gear ring 800 .

[0031] The structure of the fixing frame 5 along the axial direction of the extrusion barrel 1 is a horizontal plate, the end of which abuts against the fixing plate 4 and is provided with a second fixing hole, which can be matched with the first fixing hole. The second fixing hole is provided with a thread inside, and the mold body 3 can be fixedly connected to the extrusion barrel 1 by bolts.

[0032] As a further explanation of this embodiment, by limiting the height of the vertical plate of the fixing frame 5, it can be ensured that the rotation of the retaining ring 8 is not affected.

[0033] The mold body 3 is provided with a plurality of extrusion holes, the number of which is 3, including a first extrusion hole 303, a second extrusion hole 304, and a third extrusion hole 305. The shapes of the first extrusion hole 303, the second extrusion hole 304, and the third extrusion hole 305 are all different. A first vacuum drainage channel 309 is provided on one side of the first extrusion hole 303, an exhaust valve is installed at the end of the first vacuum drainage channel 309 close to the first extrusion hole 303, and the first vacuum drainage channel 309 is connected to the outside at a side away from the first extrusion hole 303.

[0034] A second vacuum drainage channel 310 is disposed on one side of the second extrusion hole 304 . An exhaust valve is installed at the end of the second vacuum drainage channel 310 close to the second extrusion hole 304 . The side of the second vacuum drainage channel 310 away from the second extrusion hole 304 is connected to the outside.

[0035] A third vacuum drainage channel 311 is provided on one side of the third extrusion hole 305 , an exhaust valve is installed at the end of the third vacuum drainage channel 311 close to the third extrusion hole 305 , and the side of the third vacuum drainage channel 311 away from the third extrusion hole 305 is connected to the outside.

[0036] The exhaust valves are all electrically connected to the controller. The first vacuum drainage channel 309, the second vacuum drainage channel 310, and the third vacuum drainage channel 311 are connected to the vacuum shaping system.

[0037] As a further explanation of this embodiment, the vacuum pump of the vacuum molding system can form a vacuum negative pressure state in the first extrusion hole 303, the second extrusion hole 304, and the third extrusion hole 305, and the exhaust valve can ensure that only gas passes through. The vacuum molding system is an existing device for cooling and quickly molding the extruded thermal insulation strips in the existing thermal insulation strip production process.

[0038] The first extrusion hole 303 and the second extrusion hole 304 are connected through the first channel 306 . Micro solenoid valves are fixed at both ends of the first channel 306 . The micro solenoid valves are electrically connected to the controller.

[0039] The second extrusion hole 304 and the third extrusion hole 305 are connected to each other through a second channel 307 . Micro solenoid valves are fixed to both side ends of the second channel 307 . The micro solenoid valves are electrically connected to a controller.

[0040] The third extrusion hole 305 is connected to the first extrusion hole 303 through a third channel 308 . Micro solenoid valves are fixed to both side ends of the third channel 308 . The micro solenoid valves are electrically connected to the controller.

[0041] As a further explanation of this embodiment, the micro electromagnetic valves at the ends of either side of any channel can be controlled to open and close by the controller, thereby controlling the two extrusion holes to communicate with each other.

[0042] The mold body 3 is a split structure, including a front mold body 301 and a rear mold body 300. The first vacuum drainage channel 309, the second vacuum drainage channel 310, and the third vacuum drainage channel 311 are all formed by the semi-annular groove body on the front mold body 301 and the rear mold body 300. The first channel 306, the second channel 307, and the third channel 308 are also formed by the semi-annular groove body on the front mold body 301 and the rear mold body 300.

[0043] The two side ends of the semi-ring groove of the front mold body 301 and the rear mold body 300 are provided with semi-ring threads, which can fix the exhaust valve and the micro electromagnetic valve after the film is closed. It can also be used to fix the joint, so as to communicate with the vacuum pump of the vacuum setting system through the pipeline.

[0044] A connecting plate 302 is provided on the side where the front mold body 301 and the rear mold body 300 are close to each other. Matching connecting holes are opened on the connecting plate 302, and the front mold body 301 and the rear mold body 300 can be fixed and tightly connected by bolts and nuts.

[0045] As a further explanation of this embodiment, by setting the mold body 3 as a split structure, the installation and fixation of the exhaust valve and the micro solenoid valve can be ensured. At the same time, when the first channel 306, the second channel 307, and the third channel 308 are blocked, they can be opened for cleaning to ensure the service life.

[0046] The working principle and use process of this embodiment: When in use, the raw material enters the extrusion tube 1 and is then pushed toward the rod head 900 by the extrusion rod 9. After the raw material reaches the end of the extrusion tube 1, it is blocked by the retaining ring 8. The raw material can only enter the extrusion hole of the mold body 3 opposite to the discharge hole 801, thereby producing a thermal insulation strip of the shape that can be extruded by this extrusion hole.

[0047] When it is necessary to produce insulation strips of other shapes during the production process, the drive gear 7 is driven to rotate by the micro motor 2, and the retaining ring 8 meshing with the drive gear 7 rotates accordingly, and the discharge hole 801 on the retaining ring 8 is aligned with the extrusion hole of the required shape. This process can be controlled by the controller.

[0048] During the rotation of the retaining ring 8, the controller also controls the original production extrusion hole and the current production extrusion hole, and the micro electromagnetic valve of the connected channel is opened. Then the controller starts the vacuum pump of the vacuum shaping system to form a vacuum inside the extrusion hole to be produced. Since the vacuum negative pressure is formed inside the extrusion hole to be produced, the raw materials in the original production extrusion hole will be sucked into the current production extrusion hole along the connected channel, so that there is no residual raw material in the original production extrusion hole, preventing the residual raw material inside from solidifying and forming a blockage, which affects the replacement again.

[0049] The above are only preferred implementations of the present invention. The protection scope of the present invention is not limited to the above implementation measures. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. An adjustable extruder head structure, characterized in that: The invention comprises an extrusion barrel (1) and a die body (3), wherein a rotatable extrusion rod (9) is arranged in the extrusion barrel (1), one end of the extrusion barrel (1) close to the rod head (900) of the extrusion rod (9) is fixedly connected to the die body (3), a fixed shaft (12) is arranged in the middle of the die body (3) close to the extrusion rod (9), a retaining ring (8) is rotatably connected to the fixed shaft (12), the retaining ring (8) is dynamically sealed and connected between the extrusion barrel (1) and the die body (3), a gear ring (800) is arranged on the outer circumference of the retaining ring (8), and the gear ring (800) is fixedly connected to the micro-electric The drive gear (7) at the output end of the machine (2) is meshed for transmission, the micro motor (2) is electrically connected to the controller, the retaining ring (8) is provided with a discharge hole (801), the mold body (3) is provided with a plurality of extrusion holes of different shapes, any two of the extrusion holes are provided with a communicating channel, both ends of the channel are fixed with micro solenoid valves electrically connected to the controller, any of the extrusion holes is provided with a vacuum drainage channel connected to the vacuum shaping system, the vacuum drainage channel is provided with an exhaust valve on one side close to the extrusion hole, and the vacuum shaping system and the exhaust valve are both electrically connected to the controller.

2. The adjustable extruder head structure according to claim 1, characterized in that: The mold body (3) is formed by sealing and fixing a front mold body (301) and a rear mold body (300); the channels communicating between the extrusion holes and the vacuum drainage channel are formed by sealing and closing the mold through semi-annular grooves provided on the front mold body (301) and the rear mold body (300).

3. The adjustable extruder head structure according to claim 2, characterized in that: Both ends of the upper semi-annular groove bodies of the front mold body (301) and the rear mold body (300) are provided with semi-annular threads for fixing the exhaust valve and the micro electromagnetic valve.

4. The adjustable extruder head structure according to claim 1, characterized in that: A mounting groove (901) is provided in the middle of the rod head (900) of the extrusion rod (9), a first bearing (11) is fitted in the mounting groove (901), and an inner ring hole of the first bearing (11) matches the fixed shaft (12).

5. The adjustable extruder head structure according to claim 4, characterized in that: A sealing ring (10) is fixedly connected to the fixed shaft (12) located at the outer end of the mounting groove (901).

6. The adjustable extruder head structure according to claim 1, characterized in that: The tooth roots of the outer edge tooth ring (800) of the retaining ring (8) are flush with the outer edge of the extrusion cylinder (1).

7. The adjustable extruder head structure according to claim 1, characterized in that: The micro motor (2) is fixedly connected to a motor base (6) arranged outside the extrusion cylinder (1).

8. The adjustable extruder head structure according to claim 1, characterized in that: The shape of the discharge hole (801) is fan-shaped.

9. The adjustable extruder head structure according to claim 1, characterized in that: An L-shaped fixing frame (5) is fixedly connected to a side of the extrusion cylinder (1) close to the mold body (3), and a fixing plate (4) is fixedly connected to a side of the mold body (3) close to the extrusion cylinder (1). The fixing plate (4) and the fixing frame (5) are connected by bolts.

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