PVC pipe extrusion molding device

Abstract

The utility model relates to the technical field of PVC (polyvinyl chloride) pipes, and particularly discloses a PVC pipe extrusion molding device which comprises a vacuum shaping device main body and a guide channel for guiding the PVC pipes, a heating cavity is fixedly arranged in the vacuum shaping device main body, a processing mechanism for processing the PVC pipes is fixedly connected in the heating cavity, and the vacuum shaping device main body is fixedly connected with the guide channel. The processing mechanism comprises two rotating rods which are symmetrically and rotatably connected into the heating cavity, the surfaces of one ends of the two rotating rods are sleeved with torsional springs, one ends of the torsional springs are fixedly connected with the inner wall of the heating cavity, and two sets of clamping plates are fixedly connected to the surfaces of the two rotating rods at intervals; and meanwhile, the two ends of the PVC pipe located between the two sets of clamping plates are clamped, and the PVC pipe is driven to make contact with and be attached to the heated metal fan-shaped prism, so that the PVC pipe which is just machined and formed is turned into a bent PVC pipe, the manufacturing cost of the PVC pipe is reduced, and the forming efficiency of the PVC pipe is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to PVC tubular product technical field, concretely is a kind of PVC tubular product extrusion forming device. BACKGROUND

[0002] PVC tubular product forming device is the special equipment for producing polyvinyl chloride (PVC) tubular product, PVC plastic tubular product is often used in life for drainage effect, the main components of PVC tubular product forming device have extruder, vacuum setting device, traction machine and cutting machine, wherein the raw materials required by PVC tubular product, such as PVC resin, stabilizer, plasticizer and the like are mixed in proportion into extruder and heated to melt into molten state, and the tubular shape is formed at the head of extruder, enters vacuum setting device and is shaped and cooled, and under the action of traction machine and cutting machine, PVC tubular product is continuously moved out from vacuum setting device and is divided into PVC plastic pipes of the same length.

[0003] And commonly used PVC tubular product has cylindrical type and curved type, the existing processing curved PVC plastic pipe is obtained by the way of secondary processing of already formed cylindrical PVC plastic pipe, wherein the processing way is to place a section of cylindrical PVC plastic pipe on the mold with specific bending degree to deform by secondary heating and extrusion, and the efficiency of this processing curved PVC plastic pipe is low, increases the cost of manufacturing PVC tubular product, therefore, we propose a kind of PVC tubular product extrusion forming device. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of PVC tubular product extrusion forming device to solve the inconvenient problem of curved PVC plastic pipe processing in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of PVC tubular product extrusion forming device, including vacuum setting device main body and be used to guide PVC tubular product's guide channel, the heating cavity is fixed in the vacuum setting device main body and is opened, heating cavity is fixedly connected with the processing mechanism for processing PVC tubular product in it;

[0006] The processing mechanism includes two rotating rods that are symmetrically rotatably connected in the heating cavity, torsional spring is sleeved on the surface of one end of two rotating rods, one end of the torsional spring is fixedly connected with the inner wall of heating cavity, two the surface of rotating rod is fixedly connected with two groups of clamping plates, the electric hydraulic rod is fixedly connected in the heating cavity, a group of dividing knives are fixedly connected to the output end of electric hydraulic rod, the dividing knife is located directly above guide channel, the extrusion assembly for extruding the bending of PVC tubular product is fixedly connected in the heating cavity, and the oblique guide opening for guiding out curved plastic pipe is opened in the heating cavity.

[0007] The clamping plate comprises a first inclined plate and a second inclined plate fixedly connected to the surfaces of the two rotating rods respectively, and the two groups of clamping plates are located directly below the guide channel.

[0008] The extrusion assembly comprises an electric telescopic rod fixedly connected in the heating cavity, an output end of the electric telescopic rod is fixedly connected with a servo motor, an output end of the servo motor is fixedly connected with a reciprocating screw rod, two push arms are slidably connected to the surface of the reciprocating screw rod, a limiting rod is slidably connected in each of the two push arms, the limiting rod is fixedly connected with the inner wall of the heating cavity, a first guide rod and a second guide rod are fixedly connected to one end of the two push arms respectively, and a mold is fixedly arranged in the heating cavity.

[0009] The length of the first guide rod is greater than the length of the second guide rod.

[0010] The mold comprises a driven rod rotatably connected in the heating cavity, a group of circular discs are fixedly connected to the surface of the driven rod at intervals, a plurality of sector prisms are arranged on the surface of the circular disc, a gear one is fixedly connected to one end of the driven rod, a gear two is engaged with the surface of the gear one, the gear number ratio of the gear two and the gear one is constant, a driving rod is fixedly connected to one end of the gear two, one end of the driving rod penetrates to the outside of the heating cavity, and a knob for manually rotating the driving rod is fixedly connected to one end of the driving rod.

[0011] A semicircular groove is arranged on the surface of each of the plurality of sector prisms.

[0012] A plurality of arc-shaped grooves are arranged on the surface of the circular disc, a circular rod is slidably connected in each of the plurality of arc-shaped grooves, the plurality of circular rods are fixedly connected with the plurality of sector prisms in one-to-one correspondence, and a plurality of sliding grooves slidably connected with the circular rods are fixedly connected in the heating cavity.

[0013] The utility model at least has the following beneficial effects:

[0014] The guide rods arranged at one end of the two push arms clamp the two ends of the PVC pipe material located between the two groups of clamping plates, and drive the PVC pipe material to contact and adhere to the heated metal sector prisms, so that the newly processed PVC pipe material is processed into a curved PVC pipe material, the manufacturing cost of the PVC pipe material is reduced, and the forming efficiency of the PVC pipe material is improved.

[0015] The plurality of sector prisms are arranged, so that when the circular disc is manually rotated by a fixed angle, the diameter of the circle formed by the plurality of sector prisms changes correspondingly, so that when the required PVC pipe material bending degree is greater, the diameter of the circle formed by the plurality of sector prisms is controlled to be greater, thereby improving the efficiency of workers operating the equipment to produce PVC pipe materials.

[0016] By setting the length of the first guide rod is greater than the length of the second guide rod, so that the PVC pipe can be quickly connected with the two guide rods when bending, which is beneficial to the downward movement of the push arm and the guide rod to push the PVC pipe to contact with the fan-shaped prism, and after the PVC pipe is processed, the first guide rod drives one end of the PVC pipe to move upward at the same time, so that the whole PVC pipe is inclined, which is convenient for the processed PVC pipe to separate from the fan-shaped prism, so as to carry out the next PVC pipe bending work. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole structure front view schematic diagram of the utility model;

[0018] Figure 2 It is a vacuum shaping device main body cross section structure schematic diagram of the utility model;

[0019] Figure 3 It is Figure 2 The enlarged schematic diagram of A in the middle;

[0020] Figure 4 It is Figure 2 The enlarged schematic diagram of B in the middle;

[0021] Figure 5 It is a mold structure schematic diagram of the utility model;

[0022] Figure 6 It is a two group of clamping plate structure schematic diagram of the utility model.

[0023] In the drawing: 1, vacuum shaping device main body;101, guide channel;102, heating cavity;2, processing mechanism;201, rotating rod;202, torsional spring;203, clamping plate;204, electric hydraulic rod;205, dividing cutter;206, inclined guide opening;207, first inclined plate;208, second inclined plate;3, extrusion assembly;301, electric telescopic rod;302, servo motor;303, reciprocating screw rod;304, push arm;305, limiting rod;306, first guide rod;307, second guide rod;4, mold;401, driven rod;402, disc;403, fan-shaped prism;404, gear one;405, gear two;406, driving rod;407, knob;408, semicircular groove;409, arc-shaped groove;410, round rod;411, sliding groove. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] Referring to Figures 1-6 The utility model provides a technical scheme: a PVC pipe extrusion forming device, including vacuum setting device main part 1 and be used for guiding PVC pipe's guide channel 101, the PVC pipe that has the preliminary shape from the head of extruder moves out will be drawn machine guide into vacuum setting device main part 1's guide channel 101, and is shaped and is cooled quickly in it, forms the PVC pipe with certain hardness, the heating cavity 102 is fixed in vacuum setting device main part 1, and the heating filament is distributed in the inner wall of heating cavity 102, can quickly improve the temperature of heating cavity 102 and PVC pipe and make it soften, the processing mechanism 2 for processing PVC pipe is fixedly connected in heating cavity 102, processing mechanism 2 includes two rotary rods 201 that are symmetrically rotationally connected in heating cavity 102, and the torsional spring 202 is covered in the surface of one end of two rotary rods 201, and one end of torsional spring 202 is fixedly connected with the inner wall of heating cavity 102, and two rotary rods 201's surface is fixedly connected with two groups of clamping plates 203 at intervals, and the electric hydraulic rod 204 is fixedly connected in heating cavity 102, and one group of cutting knives 205 is fixedly connected in the output end of electric hydraulic rod 204, and cutting knives 205 are located in the just above of guide channel 101, and the extrusion assembly 3 for extruding PVC pipe bending is fixedly connected in heating cavity 102, and the oblique guide opening 206 for guiding out curved plastic pipe is set up in heating cavity 102, and the clamping plate 203 includes the first inclined plate 207 and the second inclined plate 208 that are fixedly connected in the surface of two rotary rods 201 respectively, and two groups of clamping plates 203 are located in the just below of guide channel 101, in initial state, torsion spring 202 and rotary rod 201 are balanced and keep stationary state with each other force, when the cutting knife of one group that is located in the just above of guide channel 101 is moved down under the drive of electric hydraulic rod 204, cutting knife will cut the part PVC pipe in guide channel 101 and be moved and rest on the surface of two groups of clamping plates 203 under the action of gravity, because the included angle of first inclined plate 207 and second inclined plate 208 between two groups of clamping plates 203 is different, when the PVC pipe on two groups of clamping plates 203 is in the state of one end low and one end high, it is favorable to keep PVC pipe in heating cavity 102 and extrusion assembly 3 accurate butt joint processing.

[0026] The extrusion assembly 3 includes a motorized telescopic rod 301 fixedly connected in the heating cavity 102, which can receive an electric signal to make its output end retract, the output end of the motorized telescopic rod 301 is fixedly connected with a servo motor 302, which can receive an electric signal to rotate a fixed number of turns, the output end of the servo motor 302 is fixedly connected with a reciprocating screw rod 303, the surface of the reciprocating screw rod 303 is provided with two opposite screw grooves, the two screw grooves are connected end to end, a plurality of balls are slidably arranged in each screw groove, the plurality of balls are located in two push arms 304, the reciprocating screw rod 303 is slidably connected with the two push arms 304, the two push arms 304 are slidably connected with a limiting rod 305, the limiting rod 305 is fixedly connected with the inner wall of the heating cavity 102, one end of each of the two push arms 304 is fixedly connected with a first guide rod 306 and a second guide rod 307, the length of the first guide rod 306 is greater than the length of the second guide rod 307, the two guide rods can enter the two ends of the PVC pipe, thereby achieving the purpose of clamping the PVC pipe, and the PVC pipe can be driven to move towards the mold 4, when the curved PVC pipe is processed, the output end of the motorized telescopic rod 301 resets, the two guide rods stop extruding the inner walls of the two ends of the PVC pipe, and the output end of the servo motor 302 resets, so that the second guide rod 307 is pulled out of one end of the PVC pipe, the length of the first guide rod 306 is greater than that of the second guide rod 307, so one end of the first guide rod 306 is still located in the inner wall of the other end of the PVC pipe, and the first guide rod 306 moves upwards along with the push arm 304 in the resetting of the output end of the motorized telescopic rod 301, in this movement, the first guide rod 306 pushes one end of the PVC pipe to tilt upwards, so that the PVC pipe is separated from the fan-shaped prisms 403, thereby falling into the heating cavity 102 and moving out of the inclined guide opening 206, and the heating cavity 102 is fixedly provided with the mold 4, the mold 4 includes a driven rod 401 rotatably connected in the heating cavity 102, a group of disc plates 402 are fixedly connected at intervals on the surface of the driven rod 401, a plurality of arc-shaped grooves 409 are formed in the surface of each disc plate 402, and a circular rod 410 is slidably connected in each arc-shaped groove 409, the plurality of circular rods 410 are fixedly connected with the plurality of fan-shaped prisms 403 one by one, a plurality of sliding grooves 411 slidably connected with the circular rods 410 are fixedly connected in the heating cavity 102, a plurality of fan-shaped prisms 403 are arranged on the surface of each disc plate 402, the fan-shaped prisms 403 are made of metal and have good heat conductivity, so that the temperature of the fan-shaped prisms 403 can be quickly increased and the softening of the PVC pipe can be accelerated, a semicircular groove 408 is formed in the surface of each fan-shaped prism 403, so that the PVC pipe can be closely attached to the semicircular groove 408, so that the PVC pipe maintains a circular cross-section while bending a certain degree of curvature, one end of the driven rod 401 is fixedly connected with a gear one 404, the surface of the gear one 404 is engaged with a gear two 405, the gear number ratio of the gear two 405 to the gear one 404 is constant, and the gear ratio is one to three, so that the gear two 405 rotates one third of a circle when the gear one 404 rotates one circle, thereby facilitating workers to adjust the diameter of the PVC pipe and the required bending degree,The diameters of the plurality of fan-shaped prisms 403 are adjusted, so that the greater the diameter of the plurality of fan-shaped prisms 403, the smaller the bending degree required by the PVC pipe, and vice versa. One end of the gear two 405 is fixedly connected with the driving rod 406, one end of the driving rod 406 penetrates to the outside of the heating cavity 102, and one end of the driving rod 406 is fixedly connected with the knob 407 for manually rotating the driving rod 406. Because the required bending degree of the PVC pipe is different, the worker can rotate the knob 407 according to the actual use condition, so that the gear two 405 rotates, the gear one 404 rotates the fixed number of turns, the disc 402 rotates the fixed angle, the arc-shaped groove 409 on the disc 402 extrudes one end of the circular rod 410, so that the other end of the circular rod 410 pushes the fan-shaped prisms 403 to move linearly, thereby changing the diameter of the plurality of fan-shaped prisms 403. When the PVC pipe is stationary on the two groups of clamping plates 203, because the two ends of the PVC pipe are high and low, the low end of the PVC pipe is inserted into the first guide rod 306. At this time, the output end of the servo motor 302 drives the reciprocating lead screw 303 to rotate, so that the two push arms 304 drive the two guide rods to move close to each other, thereby clamping the PVC pipe on the two groups of clamping plates 203. At this time, the two guide rods are deeply inserted into the two ends of the PVC pipe. The output end of the electric telescopic rod 301 drives the servo motor 302 to move linearly downward in the heating cavity 102, so that the two push arms 304 and the two guide rods move downward. The two guide rods contact the inner wall of the PVC pipe and drive the PVC pipe to move downward, and make the PVC pipe contact the semicircular groove 408 of the plurality of fan-shaped prisms 403, thereby changing the bending degree of the PVC pipe.

[0027] It should be noted that, in the present text, relational terms such as first and second and the like can only be used to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying that there is any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising", or any other variant thereof are intended to cover non-exclusive inclusions, so that a process, method, article, or apparatus that includes a series of elements not only includes those elements, but also includes other elements not explicitly listed, or inherent to such a process, method, article, or apparatus.

[0028] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A PVC pipe extrusion molding device comprising a vacuum shaping device body (1) and a guide channel (101) for guiding the PVC pipe, characterized by: The vacuum shaping device main body (1) is internally fixed with a heating cavity (102), and a machining mechanism (2) for processing PVC pipes is fixedly connected in the heating cavity (102); The machining mechanism (2) comprises two rotating rods (201) symmetrically and rotatably connected in the heating cavity (102), the surfaces of one ends of the two rotating rods (201) are each sleeved with a torsion spring (202), one end of the torsion spring (202) is fixedly connected with the inner wall of the heating cavity (102), two groups of clamping plates (203) are fixedly connected on the surfaces of the two rotating rods (201) at intervals, an electric hydraulic rod (204) is fixedly connected in the heating cavity (102), one end of the electric hydraulic rod (204) is fixedly connected with a group of cutting knives (205), the cutting knives (205) are located directly above the guide channel (101), an extrusion assembly (3) for extruding the PVC pipe to bend is fixedly connected in the heating cavity (102), and an inclined guide opening (206) for guiding out the bent plastic pipe is formed in the heating cavity (102).

2. The PVC pipe extrusion molding apparatus according to claim 1, characterized in that: The clamping plate (203) comprises a first inclined plate (207) and a second inclined plate (208) fixedly connected on the surfaces of the two rotating rods (201) respectively, and the two groups of clamping plates (203) are located directly below the guide channel (101).

3. The PVC pipe extrusion molding apparatus according to claim 1, wherein: The extrusion assembly (3) comprises an electric telescopic rod (301) fixedly connected in the heating cavity (102), an output end of the electric telescopic rod (301) is fixedly connected with a servo motor (302), an output end of the servo motor (302) is fixedly connected with a reciprocating screw rod (303), two push arms (304) are slidably connected on the surface of the reciprocating screw rod (303), limit rods (305) are slidably connected in the two push arms (304) respectively, the limit rods (305) are fixedly connected with the inner wall of the heating cavity (102), one end of each of the two push arms (304) is fixedly connected with a first guide rod (306) and a second guide rod (307) respectively, and a mold (4) is fixedly arranged in the heating cavity (102).

4. The PVC pipe extrusion forming apparatus of claim 3, wherein: The length of the first guide rod (306) is greater than the length of the second guide rod (307).

5. The PVC pipe extrusion forming apparatus of claim 3, wherein: The mold (4) comprises a driven rod (401) rotatably connected in the heating cavity (102), a group of disc plates (402) are fixedly connected on the surface of the driven rod (401) at intervals, a plurality of sector prisms (403) are arranged on the surface of the disc plate (402), one end of the driven rod (401) is fixedly connected with a gear one (404), the surface of the gear one (404) is engaged with a gear two (405), the gear number ratio of the gear two (405) to the gear one (404) is constant, one end of the gear two (405) is fixedly connected with a driving rod (406), one end of the driving rod (406) penetrates to the outside of the heating cavity (102), and one end of the driving rod (406) is fixedly connected with a knob (407) for rotating the driving rod (406).

6. The PVC pipe extrusion apparatus of claim 5, wherein: A plurality of sector prisms (403) are arranged on the surface of the disc plate (402) at intervals.

7. The PVC pipe extrusion apparatus of claim 6, wherein: The disc (402) is provided with a plurality of arc-shaped grooves (409) on the surface, and a circular rod (410) is slidably connected in each of the arc-shaped grooves (409); the plurality of circular rods (410) are fixedly connected with the plurality of sector-shaped prisms (403) one by one; and the heating cavity (102) is fixedly connected with a plurality of sliding grooves (411) slidably connected with the circular rods (410).

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