A plastic granule production line for automotive electrical switches

Abstract

The present application discloses a production line for plastic granules for automotive electrical switches, comprising a screw extruder, a water cooling trough, a drip trough, a slitting machine and a granule dryer, a bottom plate, the four corners of which are fixedly provided with columns; a drying box, the outer wall of which is fixedly provided with a plurality of ears corresponding to the columns, a spring is provided between each column and the corresponding ear, an inlet is arranged at the top of the drying box, an outlet is arranged at the other end of the bottom of the drying box, and the lower end of the partition is close to the outlet. In daily use, by adopting the above technical scheme, the strip material is extruded, and after being water-cooled in the water cooling trough, it passes through the drip trough, and large water droplets attached to the surface of the strip material fall into the drip trough under the action of gravity, and then enter the slitting machine to be cut to obtain plastic granules, which enter the granule dryer for drying. During the production process, water droplets will not splash around, and the wear on the equipment is small, there are no vulnerable parts, and the use cost is low.

Description

Technical Field

[0001] The invention relates to a plastic particle production line for automobile electrical appliance switches. Background Art

[0002] There are many kinds of auto parts, among which there are many types of switch structures. The complete switch structure needs to be assembled through various sub-parts, and many sub-parts are plastic products, which need to be manufactured by injecting molten plastic particles into molds. In the production process of plastic particles, many devices need to cooperate with each other. The production process of plastic particles needs to be fed, then extruded into strips by an extruder, and then cut into particles of uniform size by a pelletizer after cooling;

[0003] During the production process, plastic particles need to be dried, usually by air drying or air drying. With the current surge in demand for plastic products, this drying method often requires laying plastic particles to increase the contact area between the plastic particles and the air, which takes up a lot of valuable space resources. For this reason, other inventors have proposed solutions:

[0004] The Chinese invention patent with publication number CN117774171A discloses a plastic pellet production line and production method, which includes a water cooling mechanism, a pelletizing mechanism, a conveying mechanism, and a drying mechanism. The drying mechanism includes a draining component and a blowing component. When passing through a first roller brush and a second roller brush, the water attached to the plastic strip falls back into the water cooling tank under the guidance of the bristles, and then cooperates with the high-speed airflow in the first and second blowing tanks to dry the remaining water on the plastic strip. In addition, the guide roller drives the plastic strip mounted thereon to shake in a direction perpendicular to the plastic strip to shake off the water droplets on the plastic strip, thereby reducing the site area requirements of the plastic pellet production line. However, the defects thereof are as follows:

[0005] 1. Although the first roller brush and the second roller brush can brush off some of the water on the plastic strip when they rotate, the bristles will also rub against the plastic strip and are easily worn. They need to be checked and replaced regularly to ensure the cleaning effect of the water on the plastic strip. This undoubtedly increases the cost of use;

[0006] 2. The centrifugal force generated by the rotation of the first roller brush and the second roller brush will throw the water droplets onto other parts, making other parts easily corroded by the water droplets, shortening the service life of the equipment;

[0007] 3. The moisture in the high-speed airflow is not treated, which affects the volatilization rate of the moisture on the surface of the plastic strips. Therefore, two blowing troughs need to be set up, which undoubtedly increases the site area requirements of the plastic granule production line. Summary of the invention

[0008] The present invention aims to solve one of the technical problems existing in the prior art.

[0009] The present application provides a plastic granule production line for automotive electrical switches, including a screw extruder, a water cooling tank, a drip tank, a slitting machine and a granule dryer, wherein the granule dryer includes:

[0010] A drying machine body, which has an inlet and an outlet, and a porous partition is obliquely arranged in the inner cavity;

[0011] A dry hot air generator, which is used to supply dry hot air flow into the drying machine body;

[0012] The throwing mechanism is used to throw up the plastic particles passing through the porous partition.

[0013] The dryer body includes:

[0014] A bottom plate, with columns fixed at the four corners of the top;

[0015] The drying box has a plurality of ears corresponding to the columns fixed on its outer wall;

[0016] Among them, a spring is arranged between each column and the corresponding support ear, the inlet is arranged at the top of the drying box, the outlet is arranged at the other end of the bottom of the drying box, and the lower end of the partition is close to the outlet.

[0017] The throwing mechanism includes:

[0018] A frame, comprising a top plate and a pair of support plates, fixedly connected to the top of the bottom plate;

[0019] a slot extending through the porous partition and the bottom of the drying box;

[0020] A lifting shell, which can be lifted and installed in the top plate and the slot;

[0021] The reciprocating lifting drive is used to control the reciprocating lifting of the lifting shell.

[0022] The throwing mechanism also includes:

[0023] A drainage cavity, which is arranged in the top plate and connected with a drainage pipe;

[0024] A water inlet, which is arranged on the side of the lifting shell facing the inlet;

[0025] The water outlet is arranged at the bottom of the lifting shell.

[0026] The reciprocating lift drive includes:

[0027] A return spring, the upper end and the lower end of which are respectively in contact with the lifting shell and the top plate;

[0028] A turntable, which is rotatably mounted on the inner side of one of the support plates via a rotating shaft;

[0029] A connecting rod, one end of which is hinged to the bottom of the lifting shell, and the other end of which is hinged to the rotating disk;

[0030] The motor is used to drive the rotating shaft to rotate.

[0031] The reciprocating lift drive also includes:

[0032] A shifting block, which is fixedly connected to an end of the rotating shaft away from the rotating disk;

[0033] A shifting rod, which is fixedly connected to the peripheral wall of the outer end of the output shaft of the motor through a supporting block;

[0034] The shifting rod can shift the shifting block when the output shaft of the motor rotates.

[0035] The reciprocating lift drive also includes:

[0036] A jack, which is arranged at an end of the rotating shaft away from the rotating disk;

[0037] An insert block, which is fixedly connected to the outer end of the motor output shaft;

[0038] The insert block can be rotatably inserted in the insert hole.

[0039] The dry hot air generator includes:

[0040] An air intake fan, the air outlet of which is connected to the bottom of the inner cavity of the drying box through an air intake pipe;

[0041] An electric heating tube is mounted on the air inlet pipe;

[0042] An exhaust fan, the air inlet end of which is connected to the upper part of the inner cavity of the drying box through an exhaust duct;

[0043] The dehumidification unit is used to dehumidify the air flow passing through the air intake pipe.

[0044] The dehumidification unit includes:

[0045] A dehumidification shell connected to the air inlet pipe and the lower section of the exhaust pipe;

[0046] A rotating block, which has a pair of opposed filter chambers penetrating vertically and is rotatably mounted in the dehumidification housing by a motor drive;

[0047] A plurality of partitions are respectively arranged at the top and bottom of each filter chamber;

[0048] Wherein, each filter chamber is provided with moisture absorbing particles.

[0049] The dehumidification unit also includes:

[0050] A dehumidification port is arranged on a side of the top of the dehumidification shell away from the air inlet pipe;

[0051] A plurality of curved pipes, all in L-shape, are respectively arranged in each filter chamber, one end of which is connected to the outer wall of the rotating block and the other end of which extends into the bottom of each filter chamber;

[0052] The upper section of the exhaust duct is connected to the side wall of the dehumidification shell away from the drying box end.

[0053] The beneficial effects of the present invention are as follows:

[0054] 1. Through the setting of drip trough, drying machine body, dry hot air generator and throwing mechanism, the strip material is drained and cut into plastic particles. The plastic particles are thrown to shake off some water and fully contact with hot air in all directions, which improves the drying effect, does not splash water droplets, and reduces the loss of equipment;

[0055] 2. Through the arrangement of the frame, notch, lifting shell, reciprocating spring, turntable, motor, rotating shaft, connecting rod, shift block and shift lever, the plastic particles passing through the porous partition are thrown up, thereby improving the drying effect of the hot air on the plastic particles;

[0056] 3. Through the arrangement of an air intake fan, an air intake pipe, an electric heating tube, an exhaust fan, an exhaust pipe, a dehumidification shell, a rotating block, a plurality of partitions, hygroscopic particles, a dehumidification port and a plurality of bent pipes, the airflow that is about to enter the drying body is dehumidified, and the hygroscopic particles can be self-dried, thereby improving the continuous use of the hygroscopic particles and reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 This is an overall view of the production line of plastic particles for automotive electrical switches in the embodiment of the present application;

[0058] Figure 2 This is a schematic diagram of the particle drying structure in the embodiment of the present application;

[0059] Figure 3 This is a schematic diagram of the structure of the reciprocating lifting drive in the embodiment of the present application;

[0060] Figure 4 for Figure 2 Schematic diagram of the local enlarged structure at point A in the middle.

[0061] Reference numerals

[0062] 100-screw extruder, 200-water cooling tank, 300-drip tank, 400-slitting machine, 500-granule dryer, 1-drying machine body, 11-bottom plate, 12-column, 13-drying box, 14-support ear, 2-porous partition, 3-dry hot air generator, 31-intake fan, 32-intake pipe, 33-electric heating cylinder, 34-exhaust fan, 35-exhaust duct, 4-throwing mechanism, 41-top plate, 42-support plate, 43- Notch, 44-lifting shell, 45-drainage chamber, 46-drainage pipe, 47-water inlet, 48-water outlet, 5-reciprocating lifting drive, 51-reset spring, 52-turntable, 53-rotating shaft 1, 54-connecting rod, 55-shift block, 56-shift rod, 57-support block, 58-jack, 59-plug block, 6-dehumidification unit, 61-dehumidification shell, 62-rotating block, 63-filter chamber, 64-partition net, 65-dehumidification port, 66-elbow. DETAILED DESCRIPTION

[0063] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0064] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0065] In the following, in conjunction with the accompanying drawings, the plastic granule production line for automotive electrical switches provided in the embodiment of the present application is described in detail through specific embodiments and their application scenarios.

[0066] Embodiment 1:

[0067] like Figures 1 to 4As shown, an embodiment of the present application provides a plastic granule production line for automotive electrical switches, including a screw extruder 100, a water cooling tank 200, a drip tank 300, a slitting machine 400 and a granule dryer 500. The granule dryer 500 includes a drying body 1, which has an inlet and an outlet, and a porous partition 2 is obliquely arranged in the inner cavity; a dry hot air generator 3, which is used to supply dry hot air flow into the drying body 1; and a throwing mechanism 4, which is used to throw up the plastic granules passing through the porous partition 2.

[0068] Furthermore, the drying machine body 1 includes a bottom plate 11, on the four corners of which columns 12 are fixedly provided; a drying box 13, on the outer wall of which a plurality of ears 14 corresponding to each column 12 are fixedly provided; wherein a spring is provided between each column 12 and the corresponding ear 14, the inlet is provided at the top of the drying box 13, the outlet is provided at the other end of the bottom of the drying box 13, and the lower end of the partition is close to the outlet.

[0069] Furthermore, the throwing mechanism 4 includes a frame, which includes a top plate 41 and a pair of support plates 42, which are fixed to the top of the bottom plate 11; a slot 43, which passes through the porous partition 2 and the bottom of the drying box 13; a lifting shell 44, which can be lifted and installed in the top plate 41 and the slot 43; a reciprocating lifting drive 5, which is used to control the reciprocating lifting of the lifting shell 44.

[0070] Furthermore, the throwing mechanism 4 also includes a drainage cavity 45, which is arranged in the top plate 41 and is connected to a drainage pipe 46; a water inlet 47, which is arranged on the inlet side of the lifting shell 44; and a water outlet 48, which is arranged at the bottom of the lifting shell 44.

[0071] In this embodiment of the present application, due to the adoption of the above-mentioned structure, the raw materials are put into the screw extruder 100 for mixing, melting and extruding the strip plastic, the water cooling tank 200 has cooling water, and the drip tank 300 is provided with a plurality of rotating rollers. After the strip plastic passes through the cooling water in the water cooling tank 200 and the guidance of the rotating rollers in the drip tank 300, part of the moisture on the surface gathers into water droplets, falls into the drip tank 300, enters the slitting machine 400 for slitting, and the obtained plastic particles enter the inner cavity of the drying machine body 1 from the inlet and fall into The reciprocating lifting drive 5 operates on the upper surface of the higher end of the porous partition 2, so that the lifting shell 44 is lifted and lowered reciprocatingly, which generates vibration and transmits it to the drying machine body 1, so that the materials on each porous partition 2 slide toward the outlet, and the plastic particles moved to the top of the lifting shell 44 are thrown up as the lifting shell 44 rises. The hot air generator continuously supplies hot air into the drying machine body 1, and the hot air can dry the plastic particles moving toward the outlet and thrown up on the porous partition 2, and finally the dried plastic particles leave the drying machine body 1 through the outlet;

[0072] Water droplets on the plastic particles located on the upper surface of the porous partition 2 can enter the bottom of the inner cavity of the drying machine body 1 through the holes on the porous partition 2, and when the lifting shell 44 descends to the lowest position, enter the upgrading shell 44 through the water inlet 47, and then be discharged through the water outlet 48, the drainage cavity 45 and the drainage pipe 46, so as to maintain a low humidity in the drying machine body 1.

[0073] Embodiment 2:

[0074] like Figures 2 to 3 As shown, in this embodiment, in addition to the structural features of the aforementioned embodiments, the reciprocating lifting drive 5 includes a reset spring 51, whose upper and lower ends are respectively abutted against the lifting shell 44 and the top plate 41; a turntable 52, which is rotatably mounted on the inner side of one of the support plates 42 through a rotating shaft 53; a connecting rod 54, one end of which is hinged to the bottom of the lifting shell 44, and the other end is hinged to the turntable 52; and a motor, which is used to drive the rotating shaft 53 to rotate.

[0075] Furthermore, the reciprocating lifting driver 5 also includes a shifting block 55, which is fixedly connected to the end of the rotating shaft 53 away from the turntable 52; a shifting rod 56, which is fixedly connected to the outer end peripheral wall of the output shaft of the motor through a supporting block 57, and the shifting rod 56 can shift the shifting block 55 when the output shaft of the motor rotates.

[0076] Furthermore, the reciprocating lifting driver 5 also includes a socket 58, which is arranged at the end of the rotating shaft 53 away from the turntable 52; an insert block 59, which is fixed to the outer end of the motor output shaft, and the insert block 59 can be rotatably inserted in the socket 58.

[0077] In this embodiment of the present application, due to the adoption of the above-mentioned structure, the motor is running, and its output shaft drives the lever 56 and the support block 57 to rotate around the circumference of the rotating shaft 53, and the lever block 55 is driven to drive the rotating shaft 53 to rotate. During the shifting process, the lever block 55 drives the rotating shaft 53 and the turntable 52 to rotate, and the connecting rod 54 pulls the lifting shell 44 down, and the return spring 51 is compressed to store elastic potential energy until the top surface of the lifting shell 44 is flush with the top surface of the porous partition 2. At this time, the lever block 55 is located above the lever 56. Without the restriction of the lever block 55, the return spring 51 releases the elastic potential energy, so that the lifting shell 44 rises, and at the same time, the turntable 52 and the rotating shaft 53 are driven to rotate through the pull rod until the pull rod rotates to the end connected to the turntable 52 is in the top position, the lifting shell 44 stops, and the plastic particles on the top are thrown up, the motor continues to rotate, the shift block 55 approaches and contacts the shift block 55, driving the shift block 55, the rotating shaft 53, the turntable 52 and the pull rod to move, so that the lifting shell 44 descends and resets. During the rotation of the output shaft of the motor and the rotating shaft 53, the plug block 59 rotates in the socket 58, so that the output shaft and the rotating shaft 53 can remain coaxial, ensuring that the shift block 55 and the shift rod 56 are fully in contact.

[0078] Embodiment 3:

[0079] like Figure 1 and Figure 4 As shown, in this embodiment, in addition to the structural features of the aforementioned embodiments, the dry hot air generator 3 includes an air intake fan 31, whose air outlet end is connected to the bottom of the inner cavity of the drying box 13 through an air intake pipe 32; an electric heating tube 33, which is sleeved on the air intake pipe 32; an exhaust fan 34, whose air intake end is connected to the upper part of the inner cavity of the drying box 13 through an exhaust duct 35; and a dehumidification unit 6, which is used to dehumidify the airflow passing through the air intake pipe 32.

[0080] Furthermore, the dehumidification unit 6 includes a dehumidification shell 61, which is connected to the air inlet pipe 32 and the lower section of the exhaust pipe 35; a rotating block 62, which has a pair of opposing filter chambers 63 penetrating up and down, and can be rotatably installed in the dehumidification shell 61 by a motor drive; a plurality of partition nets 64, which are respectively arranged at the top and bottom of each filter chamber 63, and each filter chamber 63 is provided with hygroscopic particles.

[0081] Furthermore, the dehumidification unit 6 also includes a dehumidification port 65, which is arranged on the side of the top of the dehumidification shell 61 away from the air inlet pipe 32; a plurality of curved pipes 66, all of which are L-shaped, are respectively arranged in each filter chamber 63, one end of which is connected to the outer wall of the rotating block 62, and the other end extends into the bottom of each filter chamber 63; the upper section of the exhaust duct 35 is connected to the side wall of the dehumidification shell 61 away from the drying box 13.

[0082] In this embodiment of the present application, due to the adoption of the above-mentioned structure, the air intake fan 31 is running, so that the air flow passes through the air intake pipe 32. After the air flow passing through the air intake pipe 32 is dehumidified by the hygroscopic particles and heated by the heating cylinder, it enters the inner cavity of the drying machine body 1 to dry the plastic particles. The water vapor on the surface of the plastic particles is adsorbed by the hot dry air flow. Under the action of the exhaust fan 34, the humid and hot air flow passes through the corresponding bends 66 to heat the hygroscopic particles in the filter chamber 63 away from the air intake pipe 32, so that the moisture in these hygroscopic particles evaporates. The external air flows through the filter chamber 63 from the dehumidification port 65, entrains the evaporated moisture of the hygroscopic particles, and then enters the lower section of the exhaust duct 35. The dehumidification port 65 can be connected to the outdoors or other workshops with lower humidity through a pipeline.

[0083] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0084] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A plastic granule production line for automotive electrical switches, comprising a screw extruder (100), a water cooling tank (200), a drip tank (300), a slitting machine (400) and a granule dryer (500), characterized in that: The particle dryer (500) comprises: A drying machine body (1) having an inlet and an outlet, and a porous partition (2) disposed obliquely in the inner cavity; A dry hot air generator (3), used for supplying dry hot air flow into the drying machine body (1); A throwing mechanism (4) for throwing up the plastic particles that have passed through the porous partition (2); The throwing mechanism (4) comprises: A frame, comprising a top plate (41) and a pair of support plates (42), fixedly connected to the top of the bottom plate (11); a notch (43) extending through the porous partition (2) and the bottom of the drying box (13); A lifting shell (44) which is installed in the top plate (41) and the slot (43) in a liftable manner; A reciprocating lifting driver (5), used for controlling the reciprocating lifting of the lifting shell (44); A drainage cavity (45), which is arranged in the top plate (41) and is connected to a drainage pipe (46); A water inlet (47) disposed on the lifting shell (44) facing the inlet side; A water outlet (48) disposed at the bottom of the lifting shell (44); The reciprocating lifting drive (5) comprises: A return spring (51), the upper end and the lower end of which are respectively in contact with the lifting shell (44) and the top plate (41); A rotating disk (52) rotatably mounted on the inner side of one of the support plates (42) via a rotating shaft (53); A connecting rod (54), one end of which is hinged to the bottom of the lifting shell (44), and the other end of which is hinged to the rotating disk (52); A motor, used for driving the rotating shaft 1 (53) to rotate; A shifting block (55) fixedly connected to the end of the rotating shaft (53) away from the rotating disk (52); A shifting rod (56) fixedly connected to the peripheral wall of the outer end of the output shaft of the motor via a supporting block (57); Wherein, the shifting rod (56) can shift the shifting block (55) when the motor output shaft rotates; A socket (58) disposed at an end of the rotating shaft (53) away from the rotating disk (52); An insert block (59) fixedly connected to the outer end of the motor output shaft; Wherein, the insert block (59) is rotatably inserted into the insert hole (58); The hot dry air generator (3) comprises: An air intake fan (31), the air outlet end of which is connected to the bottom of the inner cavity of the drying box (13) through an air intake pipe (32); An electric heating tube (33) which is sleeved on the air inlet pipe (32); An exhaust fan (34), the air inlet end of which is connected to the upper part of the inner cavity of the drying box (13) through an exhaust duct (35); a dehumidification unit (6) for dehumidifying the airflow flowing through the air inlet pipe (32); The dehumidification unit (6) comprises: A dehumidification shell (61) connected to the air inlet pipe (32) and the lower section of the exhaust pipe (35); A rotating block (62) having a pair of opposed filter chambers (63) penetrating vertically and rotatably mounted in the dehumidification housing (61) by being driven by a motor; A plurality of partitions (64) are respectively arranged at the top and bottom of each of the filter chambers (63); Wherein, each of the filter chambers (63) is provided with hygroscopic particles; A dehumidification port (65) arranged on a side of the top of the dehumidification shell (61) away from the air inlet pipe (32); A plurality of curved pipes (66), each of which is L-shaped and is disposed in each of the filter chambers (63), one end of which is connected to the outer wall of the rotating block (62) and the other end of which extends into the bottom of each of the filter chambers (63); The upper section of the exhaust duct (35) away from the drying box (13) is in communication with the side wall of the dehumidification shell (61).

2. The plastic granule production line for automotive electrical switches according to claim 1, characterized in that: The drying machine body (1) comprises: A bottom plate (11) having columns (12) fixedly disposed at four corners of the top; A drying box (13) has a plurality of ears (14) fixedly disposed on its outer wall and corresponding to each column (12); A spring is provided between each of the columns (12) and the corresponding lug (14), the inlet is provided at the top of the drying box (13), the outlet is provided at the other end of the bottom of the drying box (13), and the lower end of the partition is close to the outlet.

Images