An adjustable extruder head structure

Abstract

The present invention belongs to the technical field of heat insulation strip production equipment, and specifically provides an adjustable extruder head structure, which includes an extrusion barrel with a rotating extrusion rod inside. One end of the extrusion barrel is fixedly connected to a die body. A fixed shaft is arranged on one side of the die body close to the extrusion rod. A retaining ring is rotatably connected to the fixed shaft, and the retaining ring is movably and sealingly connected between the extrusion barrel and the die body. A gear ring is circumferentially arranged on the outside of the retaining ring, and the gear ring is meshed and driven 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, and different-shaped extrusion holes are arranged on the die body. The extrusion holes communicate with each other. Micro solenoid valves electrically connected to the controller are fixedly arranged at both ends of the channel on both sides. The extrusion holes are all communicated to a vacuum sizing system through a vacuum drainage channel. An exhaust valve is arranged on one side of the vacuum drainage channel close to the extrusion hole. The vacuum sizing system and the exhaust valve are both electrically connected to the controller. The above can achieve the replacement of the produced heat insulation strip without stopping the machine.

Description

Technical Field

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

[0002] The insulating strip used in broken bridge 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 different main materials, the insulating strips are divided into two types: PVC type and PA66 type (also known as polyamide 66 or nylon 66). Since PA66 is significantly superior to the PVC type in terms of basic performance indicators such as toughness and heat insulation effect, the PVC type insulating strip has basically been eliminated from the market.

[0003] The production and molding of insulating strips require the use of an extruder. The pre-treated raw materials are fed into the extruder and extruded from the mold through the rotation and extrusion of the screw to form an insulating strip with a certain shape and size. To obtain insulating 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 defects, the present invention provides an adjustable extruder head structure, which can switch to output insulating strips of different shapes without stopping the machine and solve the problem of residual material.

[0005] To achieve the above object, the present invention provides the following technical solution: An adjustable extruder head structure includes an extrusion barrel and a die body. A rotatable extrusion rod is arranged in the extrusion barrel. One end of the extrusion barrel close to 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 close to the extrusion rod. A retaining ring is rotatably connected to the fixed shaft. The retaining ring is movably and sealingly connected between the extrusion barrel and the die body. A toothed ring is circumferentially arranged outside the retaining ring. The toothed ring is meshed and driven 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 with different shapes are arranged on the die body. A channel is arranged between any two of the extrusion holes and is communicated with each other. Micro solenoid valves electrically connected to the controller are fixedly arranged at both ends of the channel. Any one of the extrusion holes is provided with a vacuum drainage channel communicated with a vacuum sizing system. An exhaust valve is arranged on one side of the vacuum drainage channel close to the extrusion hole. The vacuum sizing system and the exhaust valve are both electrically connected to the controller.

[0006] As a further improvement of the present invention, the die body is formed by sealing and fixing a front die body and a rear die body. The channels and vacuum drainage channels communicated between the extrusion holes are all formed by hermetically closing the half-ring grooves arranged on the front die body and the rear die body.

[0007] As a further improvement of the present invention, at both ends of the semi-circular grooves on the front mold body and the rear mold body, semi-circular threads for fixing exhaust valves and micro solenoid valves are provided.

[0008] As a further improvement of the present invention, an installation groove is opened in the middle of the rod head of the extrusion rod, a first bearing is fitted in the installation groove, and the 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 at the outer end of the installation groove.

[0010] As a further improvement of the present invention, the tooth root of the outer edge tooth ring of the retaining ring is flush with the outer edge of the extrusion barrel.

[0011] As a further improvement of the present invention, the micro motor is fixedly connected to the motor base provided on the outer side of the extrusion barrel.

[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 bracket is fixedly connected to one side of the outer side of the extrusion barrel close to the mold body, 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 bracket are connected by bolts.

[0014] Advantages of the present invention:

[0015] 1. By providing extrusion holes of different shapes on the mold body, the mold body can produce heat insulation strips of different shapes. By providing an adjustable retaining ring with a discharge hole at the feeding part of the mold body, the shape of the produced heat insulation strip can be selected without stopping the machine.

[0016] 2. Connect each extrusion hole through a channel, and set an adjustable micro solenoid valve in the channel to arbitrarily adjust and select the connected extrusion holes. All channels can form a vacuum negative pressure in a short time through the vacuum sizing 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 blocking, affecting the next replacement, and at the same time improve the utilization rate of raw materials.

[0017] 3. The used vacuum sizing system is a device required for cooling and sizing the heat insulation strip during production, and can be directly connected without additional equipment. Description of the Drawings

[0018] Figure 1 It is an isometric view of the adjustable extruder head structure of the present invention;

[0019] Figure 2Yes Figure 1 An enlarged schematic view of part A in

[0020] Figure 3 Internal schematic view of the extruder head structure

[0021] Figure 4 Yes Figure 3 An enlarged schematic view of part B in

[0022] Figure 5 Axonometric view of the retaining ring structure

[0023] Figure 6 Front view schematic of the extruder head

[0024] Figure 7 Internal structure schematic of the die body

[0025] In the figure: 1 - extrusion barrel, 2 - micro motor, 3 - die body, 300 - rear die body, 301 - front die 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 - fixing plate, 5 - fixing bracket, 6 - motor base, 7 - driving gear, 8 - retaining ring, 800 - gear ring, 801 - discharge hole; 9 - extrusion rod, 900 - rod head, 901 - installation groove; 10 - sealing ring, 11 - first bearing, 12 - fixed shaft. Detailed implementation method

[0026] In order to make the purpose, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the attached drawings. It should be understood that the specific examples described herein are only used to explain the present invention and are not used to limit the present invention. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or rear, etc., are only the directions referring to the attached drawings. Therefore, the directional terms used are for explanation and not for limiting the present invention. In addition, in all embodiments, the same reference numerals represent the same components.

[0027] Please refer to Figure 1 and Figure 3 , the present invention provides an adjustable extruder head structure, including an extrusion barrel 1, the extrusion barrel 1 is horizontally arranged, one end of the extrusion barrel 1 is provided with an opening, and the side of the extrusion barrel 1 far from the opening communicates with the feeding end. An extrusion rod 9 is arranged in the extrusion barrel 1, and the extrusion rod 9 is a rod body structure provided with a spiral surface. One end of the extrusion rod 9 far from the opening of the extrusion barrel 1 is provided with a driving device, and the output end of the driving device is fixed to the end of the extrusion rod 9.

[0028] 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 will not be elaborated here.

[0029] Please refer to 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 frustum-shaped. An installation groove 901 is opened at the center of the end of the rod head 900, and the installation groove 901 is a circular groove body.

[0030] A 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 die body 3, and the fixed shaft 12 is arranged at the center of the die body 3.

[0031] A sealing ring 10 is also sleeved on the fixed shaft 12. One end of the sealing ring 10 close to the die body 3 is flush with the notch end of the installation groove 901. The outer edge of the sealing ring 10 is in dynamic sealing connection with the installation groove 901. The inner side of the sealing ring 10 is fixedly connected to the fixed shaft 12 by interference fit.

[0032] As a further explanation of this embodiment, by arranging the sealing ring 10 at the notch of the installation groove 901, it is possible to prevent materials from entering the installation groove 901, thereby affecting the rotation of the bearing.

[0033] Please refer to Figures 1 to 5 , a retaining ring 8 is also arranged between the die body 3 and the extrusion barrel 1. An installation hole is arranged at the center of the retaining ring 8, and the retaining ring 8 is in dynamic sealing connection with the fixed shaft 12 through the installation hole. A discharge hole 801 is opened 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 the discharge holes 801 on the retaining ring 8 can be set to 1 or 2 according to requirements.

[0034] The outer edge of the retaining ring 8 is a circumferentially arranged tooth ring 800 structure. The tooth root of the tooth ring 800 on the outer edge of the retaining ring 8 is flush with the outer edge of the barrel of the extrusion barrel 1. The tooth ring 800 on the outer edge of the retaining ring 8 meshes with the driving gear 7, 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 extrusion barrel 1.

[0035] As a further explanation of this embodiment, the micro motor 2 can drive the gear 7 to rotate, so that the retaining ring 8 meshing with the driving gear 7 rotates, and thus the position of the discharge hole 801 on the retaining ring 8 can be adjusted.

[0036] Please refer to Figures 1 to 7, the outer edge of the die body 3 is the same size as the outer edge of the barrel 1 of the extruder. On the upper and lower sides of the die body 3 near one end of the barrel 1 of the extruder, fixing plates 4 are welded, and first fixing holes are provided on the fixing plates 4.

[0037] On the upper and lower sides of the barrel 1 of the extruder, fixing frames 5 are welded. The shape of the fixing frame 5 is "L". The structure of the fixing frame 5 along the radial direction of the barrel 1 of the extruder is a vertical plate, and the height of the vertical plate is higher than the tooth height of the gear ring 800.

[0038] The structure of the fixing frame 5 along the axial direction of the barrel 1 of the extruder is a horizontal plate. The end of the horizontal plate abuts against the fixing plate 4 and is provided with a second fixing hole, and the second fixing hole can cooperate with the first fixing hole. Threads are provided inside the second fixing hole, and the die body 3 and the barrel 1 of the extruder can be fixedly connected by bolts.

[0039] 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.

[0040] A number of extrusion holes are provided on the die body 3. The number of extrusion holes 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. One side of the first extrusion hole 303 is provided with a first vacuum drainage channel 309. An exhaust valve is installed at the end of the first vacuum drainage channel 309 near the first extrusion hole 303, and the side of the first vacuum drainage channel 309 far from the first extrusion hole 303 communicates to the outside.

[0041] One side of the second extrusion hole 304 is provided with a second vacuum drainage channel 310. An exhaust valve is installed at the end of the second vacuum drainage channel 310 near the second extrusion hole 304, and the side of the second vacuum drainage channel 310 far from the second extrusion hole 304 communicates to the outside.

[0042] One side of the third extrusion hole 305 is provided with a third vacuum drainage channel 311. An exhaust valve is installed at the end of the third vacuum drainage channel 311 near the third extrusion hole 305, and the side of the third vacuum drainage channel 311 far from the third extrusion hole 305 communicates to the outside.

[0043] The above-mentioned 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 communicate to the vacuum sizing system.

[0044] As a further explanation of this embodiment, through the vacuum pump of the vacuum sizing system, a vacuum negative pressure state can be formed in the first extrusion hole 303, the second extrusion hole 304, and the third extrusion hole 305. The exhaust valve can ensure that only gas passes through. The vacuum sizing system is an existing device used for cooling and quickly sizing the extruded heat insulation strip during the production process of the heat insulation strip.

[0045] The first extrusion hole 303 and the second extrusion hole 304 are connected through a first channel 306. Micro solenoid valves are fixed at both end portions on the two sides inside the first channel 306, and the micro solenoid valves are electrically connected to a controller.

[0046] The second extrusion hole 304 and the third extrusion hole 305 are connected through a second channel 307. Micro solenoid valves are fixed at both end portions on the two sides inside the second channel 307, and the micro solenoid valves are electrically connected to a controller.

[0047] The third extrusion hole 305 and the first extrusion hole 303 are connected through a third channel 308. Micro solenoid valves are fixed at both end portions on the two sides inside the third channel 308, and the micro solenoid valves are electrically connected to a controller.

[0048] As a further explanation of this embodiment, the opening and closing of the micro solenoid valves at both end portions of any channel can be controlled through the controller, so as to control the connection between two extrusion holes.

[0049] The die body 3 is arranged in a split structure and includes a front die body 301 and a rear die body 300. The above-mentioned first vacuum drainage channel 309, second vacuum drainage channel 310, and third vacuum drainage channel 311 are all formed by hermetically closing the semi-circular groove bodies on the front die body 301 and the rear die body 300. The above-mentioned first channel 306, second channel 307, and third channel 308 are also formed by hermetically closing the semi-circular groove bodies on the front die body 301 and the rear die body 300.

[0050] Semi-circular threads are provided at both end portions of the semi-circular groove bodies of the front die body 301 and the rear die body 300. After closing the die, the exhaust valve and the micro solenoid valve can be fixed. It can also be used to fix the joint, so as to be connected to the vacuum pump of the vacuum shaping system through a pipeline.

[0051] Connection plates 302 are provided on the sides of the front die body 301 and the rear die body 300 that are close to each other. Matching connection holes are opened on the connection plates 302, and the front die body 301 and the rear die body 300 can be tightly connected and fixed through bolts and nuts.

[0052] As a further explanation of this embodiment, by setting the die body 3 in a split structure, the installation and fixation of the exhaust valve and the micro solenoid valve can be ensured. At the same time, when blockage problems occur in the first channel 306, second channel 307, and third channel 308, they can be opened for cleaning, ensuring the service life.

[0053] The working principle and usage process of this embodiment:

[0054] In use, the raw materials enter into the extrusion barrel 1, and then are pushed towards the side of the rod head 900 by the extrusion rod 9. After the raw materials reach the end of the extrusion barrel 1, they are blocked by the retaining ring 8, and the raw materials can only enter the extrusion holes of the die body 3 facing the discharge holes 801, so as to produce heat insulation strips in the shape that can be extruded by these extrusion holes.

[0055] During the production process, when heat insulation strips of other shapes need to be produced, the drive gear 7 is rotated by the micro motor 2, and the retaining ring 8 engaged with the drive gear 7 rotates accordingly. The discharge holes 801 on the retaining ring 8 are aligned with the extrusion holes of the required shape, and this process can be controlled by the controller.

[0056] During the rotation of the retaining ring 8, the controller also controls the micro solenoid valves of the channels connected to the original production extrusion holes and the current production extrusion holes to open. Then the controller starts the vacuum pump of the vacuum sizing system, so that a vacuum is formed inside the extrusion holes to be produced. Due to the formation of vacuum negative pressure inside the extrusion holes to be produced, the raw materials in the original production extrusion holes will be sucked into the current production extrusion holes along the connected channels, so that there is no raw material residue in the original production extrusion holes, preventing the raw materials inside from solidifying due to residue and forming blockages, which may affect subsequent replacement.

[0057] The above is only the preferred implementation mode of the present invention, and the protection scope of the present invention is not limited to the above implementation measures. All technical solutions falling within the concept of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present invention should also be regarded as within the protection scope of the present invention.

Claims

1. An adjustable extruder head structure, characterized in that, It includes an extrusion barrel (1) and a die body (3). A rotatable extrusion rod (9) is arranged inside the extrusion barrel (1). One end of the extrusion barrel (1) near 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 on the side 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 in dynamic sealing connection between the extrusion barrel (1) and the die body (3). A toothed ring (800) is circumferentially arranged outside the retaining ring (8). The toothed ring (800) is in meshing transmission with a driving gear (7) fixedly connected to the output end of a micro motor (2). The micro motor (2) is electrically connected to a controller. A discharge hole (801) is formed in the retaining ring (8). A number of extrusion holes with different shapes are arranged on the die body (3). Channels communicating with each other are arranged between any two of the extrusion holes. Micro solenoid valves electrically connected to the controller are fixedly arranged at both end parts on both sides of each channel. A vacuum drainage channel communicating with a vacuum sizing system is arranged for any one of the extrusion holes. An exhaust valve is arranged on the side of the vacuum drainage channel close to the extrusion hole. Both the vacuum sizing system and the exhaust valve are electrically connected to the controller; The die body (3) is formed by sealing and fixing a front die body (301) and a rear die body (300). The channels communicating with each other between the extrusion holes and the vacuum drainage channels are all formed by hermetically closing the die by semi-circular grooves arranged on the front die body (301) and the rear die body (300). Semi-circular threads for fixing the exhaust valve and the micro solenoid valve are arranged at both ends of the semi-circular grooves on the front die body (301) and the rear die body (300).

2. The adjustable extruder head structure according to claim 1, characterized in that, An installation groove (901) is formed in the middle of the rod head (900) of the extrusion rod (9). A first bearing (11) is fitted in the installation groove (901). The inner hole of the inner ring of the first bearing (11) matches the fixed shaft (12).

3. The adjustable extruder head structure according to claim 2, characterized in that, A sealing ring (10) is fixedly connected to the fixed shaft (12) at the outer end of the installation groove (901).

4. The adjustable extruder head structure according to claim 1, characterized in that, The tooth root of the outer edge toothed ring (800) of the retaining ring (8) is flush with the outer edge of the barrel of the extrusion barrel (1).

5. 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 barrel (1).

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

7. The adjustable extruder head structure according to claim 1, characterized in that, An L-shaped fixing frame (5) is fixedly connected to the side of the outer barrel of the extrusion barrel (1) close to the die body (3). A fixing plate (4) is fixedly connected to the side of the die body (3) close to the extrusion barrel (1). The fixing plate (4) and the fixing frame (5) are connected by bolts.

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