Plastic color master batch cutting machine

Abstract

The invention relates to the technical field of pelletizing devices, in particular to a plastic color master batch cutting machine which comprises a base, a driving motor, a support and a cutter, the driving motor is fixedly mounted on the base, and the plastic color master batch cutting machine is characterized in that a water cooling tank is arranged on the upper side of the base, and the support is slidably mounted at the end, away from an extruder, of the water cooling tank; through the design of the water injection assembly and the water injection tank, the piston is driven to move through the vertical reciprocating motion of the support, cooling water in the water cooling tank is injected into the water injection tank, and a water injection cavity is filled with the cooling water; cooling water in the water injection cavity flows out from a cutting gap between the side wall of the cutting knife and the side wall of the adjacent water cooling groove along the side wall of the cutting knife and makes contact with the end face of the color master strip to be cut, so that the end face of the color master strip is rapidly cooled, the color master strip is prevented from being attached to the cutter, and the thickness of a cutting edge is increased; the problems that the color master strips are broken and torn during cutting, and a large number of unqualified waste materials are generated are solved, and the percent of pass of products is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cutting device, in particular to a plastic color master batch cutting machine. BACKGROUND

[0002] The plastic color master batch cutting machine is a special equipment for cutting strip-shaped plastic color master batch into uniform particles; when producing color master batch particles, first, the color master batch raw materials are mixed and added to a hot melt extruder to extrude color master batch strips, which are then transmitted to a water cooling device for cooling, and the cooled color master batch strips are uniformly transported to the cutting area by the driving device, and the cutting tool is driven to cut the color master batch strips according to the set length to obtain color master batch particles, which can process a large amount of color master batch strips in a short time, has high cutting precision, and is widely used in plastic processing, color master batch production and other industries.

[0003] When the cutter of the cutting machine cuts the color master strip, the color master strip is extruded at the cutting edge of the cutter, and the external force applied by the cutter causes the color master strip to break, and at the moment of breaking, some debris will be generated, which will adhere to the cutting edge and the surrounding surface of the cutter, causing the thickness of the cutter to increase, and when cutting the color master strip subsequently, the color master strip is prone to edge collapse and tearing, resulting in a large amount of unqualified waste, greatly reducing the production efficiency and product qualification rate; for this problem, the prior art provides a solution, for example, the utility model patent with patent application number CN202021497827.5 provides a cutting machine for preventing cutting tool from adhering to debris, which provides the following technical solution in the patent, a cutting machine for preventing cutting tool from adhering to debris, comprising a machine case, a machine frame and a conveying belt, the conveying belt and the machine case are fixedly arranged on the machine frame, a limiting plate is arranged inside the machine case, the limiting plate is fixedly arranged on the two opposite inner side walls of the machine case, a cutting tool body is slidably arranged in the limiting plate, one end of the cutting tool body away from the conveying belt is provided with a driving mechanism for driving the cutting tool body to reciprocate along the limiting plate, the two opposite side walls of the limiting plate are provided with elastic scrapers at one end close to the conveying belt, one end of the elastic scraper away from the limiting plate is slidably connected with the cutting tool body, by arranging the elastic scraper on the limiting plate, the food debris adhered to the side wall of the cutting tool body during operation can be scraped off by the elastic scraper, keeping the cutting tool body clean; but in product production, color master particles of different diameters are needed, so the size of the color master strip extruded by the hot melt extruder needs to be adjusted to meet the production demand, when the required product size is large, the color master strip passes through the cooling equipment, due to the large diameter, the color master strip inside is not completely solidified, the color master strip that is not completely cooled and solidified has certain viscosity, so that the color master strip will adhere to the cutting tool, and in the above-mentioned prior art, since the scraper is made of elastic material, the shear force generated by the scraper cannot overcome the adhesion between the color master and the cutting tool, so that the scraper deforms elastically, and then relative sliding occurs between the scraper and the color master, the color master cannot be effectively scraped off the scraper, and the color master strip adhered to the cutting tool cannot be cleaned, when cutting the color master strip subsequently, the color master strip is prone to edge collapse and tearing, resulting in a large amount of unqualified waste. SUMMARY

[0004] The purpose of the present application is to provide a plastic color master particle cutting machine to solve the problem that when cutting the color master strip that is not completely solidified, the color master strip will adhere to the cutting tool, causing the thickness of the cutting tool to increase, and when cutting the color master strip subsequently, the color master strip is prone to edge collapse and tearing, resulting in a large amount of unqualified waste.

[0005] To achieve the above purpose, the present application provides the following technical scheme:

[0006] The utility model provides a plastic color master batch cutting machine, including base, drive motor, support and cutting knife, drive motor is fixedly installed on the base, the upside of base is equipped with water cooling tank, support is slidably installed in water cooling tank far from the one end of extruder, and the sliding direction of support is vertical direction, the side of support is equipped with slide groove close to drive motor, slide groove is horizontally arranged, the output of drive motor is equipped with slide rod, the eccentricity of slide rod is arranged with drive motor's axle, slide rod is slidably connected in slide groove, cutting knife is fixedly installed on the upside of support, the cutting edge of cutting knife is upward, the side wall of water cooling tank is equipped with the mouth of clamping close to support, the width of cutting knife is greater than the width of the mouth of clamping, and the cutting gap is equipped between the cutting edge of cutting knife and the side wall of water cooling tank, the side wall of water cooling tank is equipped with the water injection groove on the one end side to support, the water injection groove is in intercommunication with cutting gap, the water injection assembly is connected on the support, the water injection assembly is in intercommunication with water injection groove, when drive motor drives support to move upward, support extrudes the water in water injection groove into cutting gap through water injection assembly.

[0007] It is easy to understand that when the color master batch is to be produced, the color master batch raw materials are mixed and added into the hot melt extruder to extrude the color master batch strip, at this time, the extruded color master batch strip is in a molten state, the color master batch strip in the molten state is passed into the water cooling tank, the water cooling tank is provided with cooling water, the color master batch strip in the molten state is in contact with the cooling water to exchange heat, so that the color master batch strip is rapidly cooled to realize the change from the liquid state to the solid state, which is helpful to the subsequent cutting and other processing procedures, at this time, the color master batch strip is conveyed into the clamping mouth on the water cooling tank under the driving of the transmission device in the water tank, the size of the clamping mouth in the vertical direction is matched with the straight line of the color master batch strip, so as to limit the position of the color master batch strip in the vertical direction, so that the color master batch strip is in the horizontal position, under the driving of the conveying device, the color master batch strip is stretched out from the clamping mouth to the outside of the water cooling tank, when the length of the color master batch strip reaches the set value, the transmission device stops, at this time, the axial direction of the color master batch strip is perpendicular to the end face of the water cooling tank, at this time, the drive motor is started, the drive motor drives the eccentrically arranged slide rod to rotate around the motor shaft, the slide rod is slidably connected with the slide groove on the support, since the slide groove is horizontally arranged, the slide rod can only slide in the horizontal direction in the slide groove, but the slide rod itself rotates in a circle, which causes a component force perpendicular to the direction of the slide groove when the slide rod slides in the slide groove, at the same time, since the support is slidably connected with the slide grooves vertically arranged on the front and back side walls of the water cooling tank through the slide arm, at this time, the rotary motion of the motor is converted into the reciprocating sliding of the support in the vertical direction, the support drives the cutting knife and the piston to move up and down in the reciprocating motion of the support, at this time, the cutting knife moves relatively with the opposite end face of the water cooling tank, the cutting knife cuts the color master batch strip in the upward motion of the cutting knife.

[0008] Further, in the process of cutting the color master batch by the cutting knife, the reciprocating movement of the support is used to drive the injection of cooling water into the water injection groove and fill the water injection cavity through the design of the water injection assembly. Since the cutting gap is provided between the side wall of the cutting knife and the side wall of the adjacent water cooling groove, the cooling water in the water injection cavity flows out from the cutting gap between the side wall of the cutting knife and the side wall of the adjacent water cooling groove at this time. At this time, the cooling water contacts the end face of the cut color master batch, and then exchanges heat with the end face of the color master batch, so that the end face of the color master batch is rapidly cooled to realize the transformation from liquid to solid, avoid the color master batch adhering to the cutting tool when cutting the color master batch inside which is not completely solidified, so that the thickness of the cutting tool is increased, and the color master batch is prone to edge collapse and tearing during subsequent cutting of the color master batch, resulting in a large amount of waste problem, and the qualified rate of the product is ensured.

[0009] Preferably, the water injection assembly comprises a piston connected with the support, the bottom of the water cooling groove is provided with a vertically arranged pressure groove, the piston is slidingly installed in the pressure groove, the water cooling groove is provided with a water passage groove, the two ends of the water passage groove are respectively communicated with the inner side wall of the water cooling groove and the inner side wall of the water injection groove, and the water passage groove completely penetrates the pressure groove, the position where the water passage groove is communicated with the pressure groove is located on the upper side of the piston, a first one-way valve is arranged in the water passage groove between the water cooling groove and the pressure groove, a second one-way valve is arranged in the water injection groove, the two ends of the second one-way valve are respectively communicated with the water injection groove and the water passage groove, the passing directions of the first one-way valve and the second one-way valve are opposite, and the passing direction of the first one-way valve is the direction of flowing into the pressure groove.

[0010] Since the piston is connected with the support, the piston moves up and down during the reciprocating movement of the support. During the downward movement of the piston, the piston slides in the pressure groove. During the downward movement of the piston, the pressure groove is in a negative pressure state. Since the passing directions of the first one-way valve and the second one-way valve are opposite, and the passing direction of the first one-way valve is the direction of flowing into the pressure groove, the cooling water in the water cooling groove is introduced into the pressure groove through the water passage groove at this time. When the piston moves upward, the first one-way valve in the water passage groove between the pressure groove and the inner wall of the water cooling groove prevents the cooling water in the pressure groove from flowing to the inner wall of the water cooling groove. The piston continues to move upward. At this time, the cooling water in the pressure groove flows to the water injection cavity through the second one-way valve. Through the above design, the reciprocating movement of the support drives the movement of the piston, and the mechanical energy of the support is directly converted into the power driving the flow of cooling water, without the need for an additional power source, which improves the energy utilization efficiency and makes the power utilization of the whole system more efficient.

[0011] Preferably, the second one-way valve comprises a U-shaped groove block, a stop block and a tension spring, the stop block is slidingly installed in the water injection groove, the U-shaped groove block is fixedly installed on the upper end surface of the stop block, and the U-shaped groove block and the stop block are arranged in a T shape, the opening direction of the U-shaped groove block is upward, and the upper end of the U-shaped groove block extends to the upper side of the clamping opening, one end of the U-shaped groove block away from the support is slidingly connected with the water passage groove, the tension spring is arranged on the side wall of the stop block away from the support, and the two ends of the tension spring are connected with the stop block and the inner side wall of the water injection groove respectively, a clamping block is arranged on the bottom wall of the cold water groove near one end of the support, the U-shaped groove block abuts against the side wall of the support when the stop block abuts against the clamping block, and the U-shaped groove block completely slides out of the water passage groove, the side wall of the water injection groove, the side wall of the cutting knife and the side wall of the support form a water injection cavity, and the water injection cavity is in communication with the cutting gap.

[0012] Under the action of the tension spring, the U-shaped groove block is located in the water passage groove between the pressure groove and the water injection groove. When the piston moves upward, the first one-way valve located in the water passage groove between the pressure groove and the inner wall of the water cooling groove prevents the cooling water in the pressure groove from flowing to the inner wall of the water cooling groove. At this time, the pressure in the pressure groove increases, and the cooling water in the pressure groove acts on the second one-way valve, thereby pushing the U-shaped groove block in the water passage groove to slide toward the support. The U-shaped groove block leaves the water passage groove. At this time, the pressure groove is in communication with the water injection groove, until the stop block on the U-shaped groove block contacts the side wall of the clamping block. At this time, the tension spring is stretched, and one end of the U-shaped groove block abuts against the side wall of the support. At this time, the water injection groove, the vertical surface on the side wall of the cutting knife, and the side wall of the support form a water injection cavity. At this time, water flows into the water injection cavity and fills the water injection cavity. At the same time, since the opening direction of the U-shaped groove block points to the clamping opening, and the upper end surface of the U-shaped groove block is flush with the upper end surface of the clamping opening, under the action of the U-shaped groove block, the cooling water in the water injection cavity flows from the gap between the side wall of the cutting knife and the side wall of the adjacent water cooling groove to the clamping opening, preventing the cooling water in the water injection cavity from flowing out in other directions, ensuring that there is a continuous and stable flow of cooling water to the end surface of the color master batch during the cutting of the color master batch, maintaining a stable cooling environment, avoiding uneven cooling or interruption of cooling due to cooling water flowing out in other directions, thereby ensuring the quality stability of the color master batch during the cutting process.

[0013] Preferably, a vertical surface is arranged on the side wall of the cutting knife close to the cold water groove, a booster groove is arranged on the vertical surface, the length of the booster groove is equal to the length of the clamping opening, the side projection of the booster groove is trapezoidal, the opening of the booster groove faces the cold water groove, and the opening height of the booster groove is greater than the length from the water injection groove to the upper end surface of the clamping opening.

[0014] When the cooling water in the water injection cavity comes to the booster tank, because the opening of the booster tank faces the cold water tank, and the cutting gap between the vertical face of the cutting knife and the adjacent end face of the water cooling tank is arranged, at this time the cooling water in the booster tank flows to the cutting gap between the vertical face of the cutting knife and the adjacent end face of the water cooling tank along the side wall of the booster tank, at this time the cross-sectional area of the cooling water gradually decreases, and the flow rate of the cooling water gradually increases, at this time the cooling water flows along the vertical direction at high speed, the flow rate of the fluid is higher, the heat transfer coefficient is higher, the high-speed flowing cooling water can quickly take away the heat of the end face of the color master strip, speed up the heat exchange process, cool the end face of the color master strip quickly, avoid the color master strip from adhering to the cutting tool, increase the thickness of the cutting tool, and in subsequent cutting of the color master strip, the color master strip is prone to edge collapse and tearing, a large amount of waste is generated, and the qualified rate of products is ensured.

[0015] Preferably, an inclined surface is arranged on the cutting knife, the inclined surface is arranged obliquely, and the inclined direction of the inclined surface is directed to the clamping opening. A first guide block is arranged on the upper side of the support, the side wall of the first guide block close to the cutting knife is parallel to the inclined surface, the side wall of the first guide block close to the water cooling tank and the inclined surface and the side wall of the support form a flushing groove, and a through groove is arranged on the support.

[0016] The support is connected to the two ends of the cutting knife through sliding arms and is slidably connected to the sliding grooves on the front and rear side walls of the water cooling tank. The two ends of the cutting knife are fixed to ensure the sliding of the support, avoid the pressure of the cooling water in the water injection cavity acting on the cutting knife, cause the cutting knife to bend, increase the distance between the side wall of the cutting knife and the adjacent side wall of the water cooling tank, and thus affect the size of the color master particles and the flow rate of the cooling water between the vertical face of the cutting knife and the adjacent side wall of the water cooling tank, and affect the heat exchange rate between the cooling water and the end face of the color master strip. The qualified rate of the color master particle product is ensured.

[0017] Preferably, a shunt hole is arranged on the first guide block, the shunt hole is arranged vertically and penetrates the first guide block, the flushing groove includes a first washing groove section and a second washing groove section, the width of the first washing groove section is greater than that of the second washing groove section, the first washing groove section is in communication with the shunt hole and the through groove, and the shunt hole is located at the connection between the first washing groove section and the second washing groove section.

[0018] Through the setting of the shunt hole and the flushing groove, part of the cooling water in the water injection cavity flows to the washing groove section through the through groove, part of the cooling water flows to the second section of the washing groove, and then flows to the cutting blade edge along the direction of the inclined surface, thereby cooling the end face of the color master strip on the inclined surface, avoiding the color master strip from adhering to the cutting knife, and part of the cooling water flows to the shunt hole during the process, at this time, the high-speed flowing cooling water is located in the vertical direction, the high-speed flowing cooling water through the shunt hole limits the color master particles between the shunt hole and the vertical surface, avoiding the color master particles from obtaining a certain initial speed under the action of the cutting force when the color master particles are quickly cut by the cutting knife, which can cause the color master particles to splash and scatter from the cutting area to the surrounding, and cause the color master particles to be difficult to collect.

[0019] Further, through the design that the width of the first section of the washing groove is greater than the width of the second section of the flushing groove hole, at this time, the cross-sectional area of the cooling water gradually decreases, and the flow rate of the cooling water gradually increases, at this time, the cooling water flows to the cutting knife edge at high speed along the direction of the inclined surface, the greater the flow rate of the fluid, the higher the heat transfer coefficient, the high-speed flowing cooling water can quickly take away the heat of the end face of the color master strip, accelerate the heat exchange process, and quickly cool the end face of the color master strip.

[0020] Preferably, the two end side walls of the support away from the clamping opening are fixedly connected with sliding arms, and the side wall of the water cooling groove is provided with a sliding groove, and the sliding groove is vertically arranged, and the sliding arms are slidingly connected in the sliding groove.

[0021] Through the design of the first guide block and the through groove, part of the cooling water in the water injection cavity flows to the flushing groove through the through groove, and then flows to the cutting blade edge along the direction of the inclined surface, thereby cooling the end face of the color master strip on the vertical surface, avoiding the color master strip from adhering to the inclined surface of the cutting knife, and increasing the thickness of the cutting tool, and causing the color master strip to be prone to edge collapse and tearing during subsequent cutting of the color master strip, and causing a large amount of unqualified waste, thereby ensuring the qualified rate of products.

[0022] Preferably, a plurality of protrusions are arranged on the sliding arm, the plurality of protrusions are symmetrically and uniformly arranged on the front and rear side walls of the sliding arm, the length of the protrusion is equal to the length of the sliding arm in the vertical direction, the cross section of the protrusion is triangular, and the protrusion is slidingly connected with the sliding groove.

[0023] The plurality of protrusions arranged on the sliding arm are uniformly arranged on the two side walls, and the cross section of the protrusion is triangular, when the sliding arm and the sliding groove are slidingly matched, the protrusions are in contact with the sliding groove, compared with the whole plane of the sliding arm in contact with the sliding groove, the actual contact area of the two is greatly reduced, thereby reducing the friction between the sliding arm and the sliding groove, prolonging the service life of the sliding arm and the sliding groove, and further prolonging the service life of the whole equipment.

[0024] Compared with the prior art, the present application has the following advantages:

[0025] 1. The application is characterized in that the water injection assembly and the water injection tank are designed, the upper and lower reciprocating movement of the support drives the piston to move, the cooling water in the water cooling tank is injected into the water injection tank, and the water injection cavity is filled with cooling water; the cooling water in the water injection cavity flows out from the cutting gap between the cutting knife side wall and the side wall of the adjacent water cooling tank along the cutting knife side wall, and contacts the end face of the color master batch being cut, so that the end face of the color master batch is rapidly cooled, the color master batch is prevented from adhering to the cutter, the thickness of the cutter is increased, the color master batch is prevented from appearing edge collapse and tearing phenomenon during cutting, a large amount of unqualified waste is prevented, and the qualified rate of products is ensured.

[0026] 2. The application is characterized in that the U-shaped groove block is designed, when the color master batch is cut, the piston extrudes the cooling water, and then drives the stop block and the U-shaped groove block, so that the cooling water enters the water injection cavity composed of the vertical surface on the cutting knife, the side wall in the opening direction of the U-shaped groove block and the side wall of the support, and the cooling water in the water injection cavity flows to the clamping opening from the cutting gap between the cutting knife side wall and the side wall of the adjacent water cooling tank through the setting of the opening direction of the U-shaped groove block, the cooling water in the water injection cavity is prevented from flowing out from other directions, the color master batch is maintained in a stable cooling environment during cutting, and the quality stability of the color master batch during the cutting process is ensured.

[0027] 3. The application is characterized in that the width of the first section of the washing groove on the booster groove and the flushing groove is greater than the width of the second section of the flushing groove hole, so that the cooling water gradually decreases the cross-sectional area when flowing to the end face of the color master batch, and the flow rate of the cooling water gradually increases; at this time, the cooling water flows to the cutting knife edge at high speed along the inclined surface direction, the flow rate of the fluid is higher, the convective heat transfer coefficient is higher, the cooling water flowing at high speed can quickly take away the heat of the end face of the color master batch, the end face of the color master batch is rapidly cooled, the color master batch is prevented from adhering to the cutter, the thickness of the cutter is increased, the color master batch is prevented from appearing edge collapse and tearing phenomenon during cutting, and the qualified rate of products is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a whole structure schematic view of the plastic color master batch cutting machine of the application;

[0029] Figure 2 It is a whole structure axial section view of the plastic color master batch cutting machine of the application;

[0030] Figure 3 It is Figure 1 the section view of A-A;

[0031] Figure 4 It is Figure 3 the partial section view of B-B;

[0032] Figure 5 It is Figure 3 the partial enlarged view of C;

[0033] Figure 6 As Figure 5 Structure diagram of cutting knife in cutting state;

[0034] Figure 7 Assembling diagram of support and cutting knife in the application.

[0035] In the figure: 1, water cooling tank; 11, clamping opening; 12, water injection groove; 13, water injection cavity; 14, pressure tank; 15, water channel; 16, clamping block; 17, sliding groove; 2, driving motor; 21, sliding rod; 3, support; 31, sliding groove; 32, No. 1 guide block; 33, flushing groove; 34, through groove; 35, sliding arm; 36, protrusion; 37, shunt hole; 38, washing groove section one; 39, washing groove section two; 4, cutting knife; 41, vertical surface; 42, inclined surface; 43, booster groove; 44, cutting gap; 5, piston; 6, No. 1 check valve; 7, No. 2 check valve; 71, U-shaped groove block; 72, tension spring; 73, stop block. DETAILED DESCRIPTION

[0036] Please refer to Figures 1 to 7 The application provides a plastic color master batch cutting machine, and the technical scheme is as follows:

[0037] A plastic color master batch cutting machine, comprising a base, a driving motor 2, a support 3 and a cutting knife 4, the driving motor 2 is fixedly installed on the base, a water cooling tank 1 is arranged on the upper side of the base, the support 3 is slidingly installed at one end of the water cooling tank 1 away from an extruder, and the sliding direction of the support 3 is a vertical direction, a sliding groove 31 is arranged on the side of the support 3 close to the driving motor 2, the sliding groove 31 is horizontally arranged, a sliding rod 21 is arranged on the output end of the driving motor 2, the sliding rod 21 is eccentrically arranged with the shaft center of the driving motor 2, the sliding rod 21 is slidingly connected in the sliding groove 31, the cutting knife 4 is fixedly installed on the upper side of the support 3, the cutting edge of the cutting knife 4 faces upward, a clamping opening 11 is arranged on the side wall of the water cooling tank 1 close to the support 3, the width of the cutting knife 4 is greater than the width of the clamping opening 11, and a cutting gap 44 is arranged between the cutting edge of the cutting knife 4 and the side wall of the water cooling tank 1, a water injection groove 12 is arranged on the end side wall of the water cooling tank 1 facing the support 3, the water injection groove 12 is communicated with the cutting gap 44, a water injection assembly is connected to the support 3, the water injection assembly is communicated with the water injection groove 12, and when the driving motor 2 drives the support 3 to move upward, the support 3 extrudes the water in the water injection groove 12 into the cutting gap 44 through the water injection assembly.

[0038] Please refer to Figures 2 to 6The bracket 3 is connected with the piston 5, the bottom of the water cooling tank 1 is provided with a vertical pressure tank 14, the piston 5 is slidingly installed in the pressure tank 14, the water cooling tank 1 is provided with a water passing tank 15, the two ends of the water passing tank 15 are respectively communicated with the inner side wall of the water cooling tank 1 and the inner side wall of the water injection tank 12, and the water passing tank 15 completely penetrates the pressure tank 14, the position where the water passing tank 15 is communicated with the pressure tank 14 is located on the upper side of the piston 5, a first one-way valve 6 is arranged in the water passing tank 15 between the water cooling tank 1 and the pressure tank 14, a second one-way valve 7 is arranged in the water injection tank 12, the two ends of the second one-way valve 7 are respectively communicated with the water injection tank 12 and the water passing tank 15, the passing directions of the first one-way valve 6 and the second one-way valve 7 are opposite, and the passing direction of the first one-way valve 6 is the direction of flowing into the pressure tank 14, the second one-way valve 7 comprises a U-shaped groove block 71, a stop block 73 and a tension spring 72, the stop block 73 is slidingly installed in the water injection tank 12, the U-shaped groove block 71 is fixedly installed on the upper end face of the stop block 73, and the U-shaped groove block 71 and the stop block 73 are arranged in a T shape, the opening direction of the U-shaped groove block 71 is upward, and the upper end of the U-shaped groove block 71 extends to the upper side of the clamping opening 11, the end of the U-shaped groove block 71 away from the bracket 3 is slidingly connected with the water passing tank 15, the tension spring 72 is arranged on the side wall of the stop block 73 away from the bracket 3, and the two ends of the tension spring 72 are respectively connected with the stop block 73 and the inner side wall of the water injection tank 12, a clamping block 16 is arranged on the end of the bottom wall of the water tank close to the bracket 3, the U-shaped groove block 71 abuts against the side wall of the bracket 3 when the stop block 73 abuts against the clamping block 16, and the U-shaped groove block 71 completely slides out of the water passing tank 15, the side wall of the water injection tank 12, the side wall of the cutting knife 4, the side wall in the opening direction of the U-shaped groove block 71 and the side wall of the bracket 3 form a water injection cavity 13, and the water injection cavity 13 is communicated with the cutting gap 44.

[0039] Please refer to Figures 2 to 6, the cutting knife 4 is provided with a vertical surface 41 on the side wall close to the cold water tank, the vertical surface 41 is provided with a booster groove 43, the length of the booster groove 43 is equal to the length of the clamping port 11, the side projection of the booster groove 43 is trapezoidal, the opening of the booster groove 43 faces the cold water tank, the opening height of the booster groove 43 is greater than the length from the water injection groove 12 to the upper end surface of the clamping port 11, the first guide block 32 is provided with a shunt hole 37, the shunt hole 37 is vertically arranged and the first guide block 32 penetrates, the flushing groove 33 includes a washing groove one section 38 and a washing groove two section 39, the width of the washing groove one section 38 is greater than the width of the flushing groove 33 two section, the flushing groove 33 one section is communicated with the shunt hole 37 and the through groove 34 respectively, the shunt hole 37 is located at the connection between the washing groove one section 38 and the washing groove two section 39, the cutting knife 4 is provided with an inclined surface 42, the inclined surface 42 is arranged obliquely, the inclined direction of the inclined surface 42 points to the clamping port 11, the upper side of the support 3 is provided with a first guide block 32, the side wall close to the side of the cutting knife 4 of the first guide block 32 is parallel to the inclined surface 42, the side wall close to the side of the water cooling tank 1 of the first guide block 32 and the inclined surface 42 and the side wall of the support 3 form the flushing groove 33, the support 3 is provided with a through groove 34, the flushing groove 33 is communicated with the water injection cavity 13 through the through groove 34.

[0040] Please refer to Figure 1 and Figure 4 , the two end side walls of the support 3 away from the clamping port 11 are fixedly connected with a sliding arm 35, the side wall of the water cooling tank 1 is provided with a sliding groove 17, the sliding groove 17 is vertically arranged, the sliding arm 35 is slidingly connected in the sliding groove 17, the sliding arm 35 is provided with a plurality of protrusions 36, the plurality of protrusions 36 are symmetrically and uniformly distributed on the front and rear side walls of the sliding arm 35, the length of the protrusion 36 is equal to the length in the vertical direction of the sliding arm 35, the cross section of the protrusion 36 is triangular, the protrusion 36 is slidingly connected with the sliding groove 17.

[0041] Working principle: When masterbatch particles are to be produced, the masterbatch raw materials are mixed and added into the hot melt extruder to extrude the masterbatch. At this time, the extruded masterbatch is in a molten state. The masterbatch in the molten state is passed into the water-cooling tank 1. Cooling water is installed in the water-cooling tank 1. The molten masterbatch contacts the cooling water and then performs heat exchange, so that the masterbatch is quickly cooled and the transition from liquid to solid is achieved, which is helpful for subsequent processing steps such as cutting. At this time, the masterbatch is driven by the transmission device in the water tank to be conveyed to the clamping port 11 on the water-cooling tank 1. The size of the clamping port 11 in the vertical direction matches the straight line of the masterbatch, thereby limiting the position of the masterbatch in the vertical direction, so that the masterbatch is in a horizontal position. Driven by the transmission device, the masterbatch extends from the clamping port 11 to the outside of the water-cooling tank 1. When the length of the masterbatch reaches the set value, the transmission device stops. At this time, the axis of the masterbatch is about When the cam 31 is in the vertical direction, the cam 31 is in the horizontal direction, and the cam 31 is in the horizontal direction, so that the cam 31 can only slide horizontally in the cam 31. However, the cam 31 itself moves in a circular motion, which causes the cam 21 to slide in the cam 31 and generate a component force perpendicular to the direction of the cam 31. At the same time, since the bracket 3 is slidably connected to the sliding groove 17 vertically arranged on the front and rear side walls of the water-cooling tank 1 through the sliding arm 35, the rotational motion of the motor is converted into a reciprocating sliding motion of the bracket 3 in the vertical direction. During the up and down reciprocating motion of the bracket 3, the cutting knife 4 and the piston 5 are driven to move up and down. At this time, relative motion occurs between the cutting knife 4 and the end face of the water-cooling tank 1 that is in the vertical direction. During the upward motion of the cutting knife 4, the cutting knife 4 cuts the masterbatch.

[0042] When the piston 5 is in the process of downward movement, the downward sliding of the piston 5 in the pressure groove 14, the pressure groove 14 is in a negative pressure state, and the fixed stop block 73 under the action of the tension spring 72, and then the U-shaped groove block 71 is located in the water passage 15 between the pressure groove 14 and the water injection groove 12, at this time the negative pressure state of the pressure groove 14 through the water passage 15 into the water cooling tank 1 in the cooling water into the pressure groove 14, when the piston 5 upward movement process, at this time the water passage 15 between the pressure groove 14 and the inner wall of the water cooling tank 1 in the one-way valve 6 prevents the cooling water in the pressure groove 14 from flowing to the inner wall of the water cooling tank 1, with the piston 5 continues to move upward, at this time the pressure in the pressure groove 14 increases, and the cooling water in the pressure groove 14 acts on the second one-way valve 7, and then pushes the U-shaped groove block 71 in the water passage 15 to slide to the support 3 direction, the U-shaped groove block 71 leaves the water passage 15, at this time the pressure groove 14 and the water injection groove 12 are communicated, until the stop block 73 on the U-shaped groove block 71 and the side wall of the clamping block 16 contact, at this time the tension spring 72 is stretched, and one end of the U-shaped groove block 71 and the side wall of the support 3 abut, at this time the water injection groove 12 and the vertical face 41 on the cutting knife 4, the side wall of the opening direction of the U-shaped groove block 71 and the side wall of the support 3 form the water injection cavity 13, at this time the water comes into the water injection cavity 13, and fills the water injection cavity 13, part of the cooling water in the water injection cavity 13 comes into the booster groove 43, and flows to the cutting knife 4 blade through the cutting gap 44 between the vertical face and the adjacent end face of the water cooling tank 1, and then cools the color master batch end face on the vertical face 41, and part of the cooling water in the water injection cavity 13 comes into the washing groove one section 38 through the through groove 34, part of the cooling water flows to the washing groove two section 39, and then flows to the cutting knife 4 blade in the direction of the inclined face 42, and then cools the color master batch end face on the inclined face 42, avoids the color master batch from adhering to the cutting knife 4, and part of the cooling water flows to the shunt hole 37, collects the color master batch particles after cutting, and avoids the color master batch particles cut by the cutting knife 4 from splashing and scattering.

[0043] When the cutting is completed, the support 3 drives the piston 5 to move downward, and the piston 5 slides in the pressure groove 14, and the pressure of the pressure groove 14 changes from positive pressure to negative pressure, and the elastic potential energy of the tension spring 72 is released to pull the stop block 73 and then drive the U-shaped groove block 71 to move to the water passage 15 between the pressure groove 14 and the water injection groove 12.

[0044] The above describes one specific embodiment of the application in detail with reference to the drawings, but the application is not limited to the above described embodiments. For those skilled in the art, various changes, modifications, replacements and variations of the embodiments without departing from the principles and ideas of the application shall still fall within the protection scope of the application.

Claims

1. A plastic masterbatch cutting machine, comprising a base, a drive motor (2), a bracket (3) and a cutting blade (4), wherein the drive motor (2) is fixedly mounted on the base, and is characterized in that: A water cooling groove (1) is provided on the upper side of the base, the bracket (3) is slidably installed on the end of the water cooling groove (1) away from the extruder, and the sliding direction of the bracket (3) is vertical, a slide groove (31) is provided on the side of the bracket (3) close to the drive motor (2), the slide groove (31) is horizontally arranged, and a slide rod (21) is provided at the output end of the drive motor (2), the slide rod (21) is eccentrically arranged with the axis of the drive motor (2), and the slide rod (21) is slidably connected in the slide groove (31), the cutting knife (4) is fixedly installed on the upper side of the bracket (3), the cutting edge of the cutting knife (4) faces upward, and the water cooling groove (1) is close to the bracket. A clamping opening (11) is provided on the side wall of the frame (3); the width of the cutting knife (4) is greater than the width of the clamping opening (11); a cutting gap (44) is provided between the cutting edge of the cutting knife (4) and the side wall of the water-cooling groove (1); a water injection groove (12) is provided on the side wall of one end of the water-cooling groove (1) facing the frame (3); the water injection groove (12) is connected to the cutting gap (44); a water injection assembly is connected to the frame (3); and when the driving motor (2) drives the frame (3) to move upward, the frame (3) squeezes water in the water injection groove (12) into the cutting gap (44) through the water injection assembly.

2. A plastic masterbatch cutting machine according to claim 1, characterized in that: The water injection assembly includes a piston (5), the piston (5) is connected to the bracket (3), a vertically arranged pressure groove (14) is provided at the bottom of the water cooling groove (1), the piston (5) is slidably installed in the pressure groove (14), a water groove (15) is provided in the water cooling groove (1), the two ends of the water groove (15) are respectively connected to the inner wall of the water cooling groove (1) and the inner wall of the water injection groove (12), and the water groove (15) completely passes through the pressure groove (14), and the water groove (15) and the pressure groove are connected. The position of communication with the water cooling tank (1) and the pressure tank (14) is located on the upper side of the piston (5). A first check valve (6) is provided in the water passage (15) between the water cooling tank (1) and the pressure tank (14). A second check valve (7) is provided in the water injection tank (12). Both ends of the second check valve (7) are respectively connected with the water injection tank (12) and the water passage (15). The passing directions of the first check valve (6) and the second check valve (7) are opposite, and the passing direction of the first check valve (6) is the direction of flowing into the pressure tank (14).

3. A plastic masterbatch cutting machine according to claim 2, characterized in that: The second one-way valve (7) includes a U-shaped groove block (71), a stop block (73) and a tension spring (72). The stop block (73) is slidably mounted in the water injection groove (12). The U-shaped groove block (71) is fixedly mounted on the upper end surface of the stop block (73). The U-shaped groove block (71) and the stop block (73) are arranged in a T-shape. The opening direction of the U-shaped groove block (71) is upward, and the upper end of the U-shaped groove block (71) extends to the upper side of the clamping port (11). The end of the U-shaped groove block (71) away from the bracket (3) is slidably connected to the water trough (15). The tension spring (72) is arranged at the end of the stop block (73) away from the bracket. (3), the two ends of the tension spring (72) are respectively connected to the stopper (73) and the inner side wall of the water injection groove (12), and a clamping block (16) is provided on the bottom wall of the cold water groove close to the bracket (3). When the stopper (73) and the clamping block (16) are in contact with each other, the U-shaped groove block (71) and the side wall of the bracket (3) are in contact, and the U-shaped groove block (71) completely slides to the outside of the water groove (15). The side wall of the water injection groove (12), the side wall of the cutting knife (4), the side wall of the U-shaped groove block (71) in the opening direction and the side wall of the bracket (3) form a water injection cavity (13), and the water injection cavity (13) is connected to the cutting gap (44).

4. The plastic masterbatch cutting machine according to claim 1, characterized in that: A vertical surface (41) is provided on a side wall of the cutting knife (4) close to the cold water trough, and a pressurizing groove (43) is provided on the vertical surface (41). The length of the pressurizing groove (43) is equal to the length of the clamping port (11). The side projection of the pressurizing groove (43) is trapezoidal. The opening of the pressurizing groove (43) faces the cold water trough, and the opening height of the pressurizing groove (43) is greater than the length from the water injection trough (12) to the upper end face of the clamping port (11).

5. A plastic masterbatch cutting machine according to claim 4, characterized in that: The cutting blade (4) is provided with an inclined surface (42), the inclined surface (42) is inclined, and the inclined direction of the inclined surface (42) points to the clamping port (11); a first guide block (32) is provided on the upper side of the bracket (3); the side wall of the first guide block (32) close to the cutting blade (4) is parallel to the inclined surface (42); the side wall of the first guide block (32) close to the water cooling tank (1) forms a flushing groove (33) with the inclined surface (42) and the side wall of the bracket (3); a through groove (34) is provided on the bracket (3), and the flushing groove (33) is connected to the water injection chamber (13) through the through groove (34).

6. The plastic masterbatch cutting machine according to claim 5, characterized in that: The first guide block (32) is provided with a diverter hole (37), which is vertically arranged and passes through the first guide block (32). The flushing trough (33) includes a first washing trough section (38) and a second washing trough section (39). The width of the first washing trough section (38) is greater than the width of the second washing trough section (33). The first washing trough section (33) is connected to the diverter hole (37) and the through trough (34) respectively. The diverter hole (37) is located at the connection between the first washing trough section (38) and the second washing trough section (39).

7. A plastic masterbatch cutting machine according to claim 1, characterized in that: Slide arms (35) are fixedly connected to the side walls of both ends of the bracket (3) away from the clamping port (11), and a slide groove (17) is provided on the side wall of the water cooling tank (1). The slide groove (17) is vertically arranged, and the slide arm (35) is slidably connected in the slide groove (17).

8. The plastic masterbatch cutting machine according to claim 7, characterized in that: The slide arm (35) is provided with a plurality of protrusions (36), which are symmetrically distributed on the front and rear side walls of the slide arm (35), the length of the protrusions (36) is equal to the length of the slide arm (35) in the vertical direction, the cross section of the protrusions (36) is triangular, and the protrusions (36) are slidably connected to the slide groove (17).

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