Plastic adhesive containing maleic anhydride graft polymer and preparation equipment

Abstract

The invention discloses a plastic adhesive containing a maleic anhydride graft polymer and preparation equipment, the plastic adhesive comprises mixing equipment for mixing raw materials, extrusion equipment and granulation equipment, the extrusion equipment comprises a feeding device, a melting device and an extrusion device; the feeding device comprises a feeding hopper, a detection box, a sampling inspection mechanism, a testing mechanism and a rechecking mechanism, the feeding hopper is connected with the melting device and used for discharging materials, the detection box is arranged above the feeding hopper, and a transmission mechanism is arranged at the bottom end of the detection box; the sampling inspection mechanism is used for sampling inspection of raw materials in the detection box, the testing mechanism is used for detecting whether caking exists in a sampling inspection sample or not, and the re-checking mechanism is used for re-detecting the caking sample. The adhesive has the effects of being high in adhesive force and not prone to falling off, and in addition, whether materials are caked or not can be intelligently detected.

Description

Technical Field

[0001] The present application relates to the technical field of adhesives, and in particular to a plastic adhesive containing a maleic anhydride grafted polymer and a preparation device. Background Art

[0002] At present, plastics, synthetic rubber and synthetic fibers have formed three indispensable synthetic materials in daily life. Specifically, plastics are materials that are made of natural or synthetic resins as the main component, with various additives added, and can be molded into a certain shape under certain temperature and pressure conditions, and keep the shape unchanged at room temperature. Plastic products are a general term for daily and industrial products made of plastic as the main raw material. It includes products made of all processes such as injection molding and blister molding using plastic as the raw material. Plastic is a type of synthetic polymer material with plasticity. Compared with metal, stone and wood, plastic products have the advantages of low cost and strong plasticity. They are widely used in the national economy. The plastic industry occupies an extremely important position in the world today. For many years, the production of plastic products has developed rapidly around the world. However, many plastic products are not all integrally formed, but also need to be assembled by parts. In the assembly process, adhesives are needed. However, the existing adhesives used for bonding plastics have poor bonding strength during bonding, and the plastics will fall off, which seriously affects the quality of plastic products.

[0003] In the related art, a Chinese patent with publication number CN113462319A proposes a plastic adhesive containing a maleic anhydride grafted polymer, wherein the plastic adhesive is composed of an ethylene-vinyl acetate copolymer, a maleic anhydride grafted polymer, a thickener and a regulator, wherein the ethylene-vinyl acetate copolymer is a random copolymer, and the content of vinyl acetate in the ethylene-vinyl acetate copolymer is 20-40%, and the weight ratio of the ethylene-vinyl acetate copolymer, the maleic anhydride grafted polymer, the thickener and the regulator is (4-6): (1-3): (4-6): 1. The adhesive of the present invention has the advantages of strong bonding force and is not easy to fall off when bonding plastic products, and the preparation method of the adhesive is simple, and no solvent is needed in the reaction process, which can avoid the pollution and flammability caused by the adhesive, and has high production efficiency and low cost, and has good economic benefits and industrial production prospects.

[0004] Regarding the above-mentioned related technologies, the inventors believe that there are the following defects: the raw materials need to be mixed first, and then the raw materials are melted, extruded and granulated. When the raw materials are added to the extruder, it is necessary to ensure that the materials do not clump, otherwise the feeding position of the extruder will be blocked, affecting normal production work. Summary of the invention

[0005] In order to improve the problem of raw material agglomeration affecting material feeding, the present application provides a plastic adhesive containing a maleic anhydride grafted polymer and a preparation device.

[0006] The present application provides a preparation device for a plastic adhesive containing a maleic anhydride grafted polymer, which adopts the following technical solution: A preparation device for a plastic adhesive containing a maleic anhydride grafted polymer, comprising a mixing device for mixing raw materials, an extrusion device and a granulation device, wherein the extrusion device comprises a feeding device, a melting device and an extrusion device; The feeding device includes a feeding hopper, a detection box, a sampling mechanism, a testing mechanism and a review mechanism. The feeding hopper is connected to the melting device and is used to feed the material. The detection box is arranged above the feeding hopper and a transmission mechanism is arranged at the bottom of the detection box. The sampling mechanism is used to sample the raw materials in the detection box. The testing mechanism is used to detect whether there is agglomeration in the sample, and the review mechanism is used to re-test the agglomerated sample.

[0007] Optionally, the sampling mechanism includes a bracket rotatably arranged on the detection box, a plurality of rotating rods arranged on the bracket, a rotating motor for realizing the rotation of the bracket, a plurality of sampling cages rotatably arranged on the rotating rods, and a sampling motor for realizing the rotation of the sampling cage, and one side of the sampling cage is opened.

[0008] Optionally, the testing mechanism includes a non-woven fabric, a winding assembly, a plurality of winding ropes, a tension sensor and a buzzer, the non-woven fabric is movably arranged on one side of the opening of the sampling cage, the winding assembly is used to wind the winding ropes, the tension sensor is used to connect any one of the winding ropes, and the tension sensor is electrically connected to the buzzer.

[0009] Optionally, the testing mechanism also includes an identification component, which includes a U-shaped hose, a liquid level sensor arranged at either end of the hose, and a control unit for controlling the lifting and lowering of the other end of the hose, wherein both ends of the hose are in the same horizontal plane when the hose is in an initial position, and the liquid level sensor is arranged at a specified position in the hose and is used to identify the presence of agglomerations in a set number of samples in the sampling cage.

[0010] Optionally, the control part includes a support frame, a first electromagnet, a first rack, a first gear, a first bevel gear, a second bevel gear, a screw rod, a sliding rod and a control block, the first electromagnet is fixed on the corresponding rotating rod, the support frame is fixed on the detection box, the first rack slides on the support frame, the first electromagnet is used to adsorb with the first rack, the first gear, the first bevel gear and the second bevel gear are all rotatably arranged on the support frame, the first gear is meshed with the first rack, the first bevel gear is coaxially fixed with the first gear, the second bevel gear is coaxially fixed with the end of the screw rod, the screw rod rotates on the support frame, the sliding rod is fixed on the support frame, the control block is spirally matched with the screw rod, the control block is slidably sleeved on the sliding rod, and the control block is fixedly connected to one end of the hose.

[0011] Optionally, the review mechanism includes an elastically arranged rolling plate, a support plate fixed to the sampling cage, and a reciprocating part for realizing reciprocating motion of the rolling plate. A plurality of protrusions are also fixedly connected to the side of the rolling plate. The non-woven fabric is located between the support plate and the rolling plate, and the protrusions impact and roll the samples in the non-woven bag.

[0012] Optionally, the reciprocating part includes a second electromagnet, a reciprocating electric push rod and a spring, the rolling plate is fixedly connected to an elastic rod, the sampling cage is fixedly connected to a vertical plate, the vertical plate is provided with an elastic hole for the elastic rod to pass through, the spring is sleeved outside the elastic rod, the two ends of the spring are respectively fixedly connected to the rolling plate and the vertical plate, the reciprocating electric push rod is fixed on the vertical plate, the reciprocating electric push rod is fixedly connected to the second electromagnet, and the second electromagnet is adsorbed to the rolling plate.

[0013] Optionally, the cleaning assembly includes a beating rod, an elastic member, and an adjusting portion for controlling the reciprocating swing of the beating rod, the beating rod is rotatably connected to the side wall of the sampling cage opening, and the beating rod is connected to the sampling hole via an elastic member.

[0014] Optionally, the adjustment part includes an adjustment electric push rod, an adjustment electromagnet, an adjustment gear and an adjustment rack, the adjustment gear is fixedly connected to the end of the beating rod, the adjustment gear is meshingly connected to the adjustment rack, the output end of the adjustment electric push rod is fixedly connected to the adjustment electromagnet, and the adjustment electromagnet is adsorbed and connected to the adjustment rack.

[0015] The present application also provides a plastic adhesive containing a maleic anhydride grafted polymer, which adopts the following technical solution: A plastic adhesive containing a maleic anhydride grafted polymer, the raw material components of which are: 40 parts of ethylene-vinyl acetate copolymer, 10 parts of maleic anhydride grafted polymer, 40 parts of thickener and 10 parts of regulator by weight, wherein the content of vinyl acetate in the ethylene-vinyl acetate copolymer is 30%.

[0016] In summary, the present application includes at least one of the following beneficial technical effects: 1. Under the control of two winding motors, the non-woven fabric is moved to the position of the opening of the sampling cage. At the same time, the sampling motor controls the sampling cage to start rotating, and the opening of the sampling cage is always kept upward during the rotation. If the sample is not agglomerated, the sample will fall from the gap of the sampling cage. If the sample is agglomerated, the material will stay in the sampling cage. Since the winding rope is in a straight state, the tension of the tension sensor is controlled to be 0 or at the set value in the initial state. After the sample screening is completed, the sampling cage is controlled to rotate to the lower position, and the agglomerated sample in the sampling cage falls onto the non-woven fabric. At this time, the value of the tension sensor changes, and the tension sensor controls the buzzer to sound an alarm, proving that there is agglomeration in the sample; 2. When the buzzer starts to alarm, the non-woven fabric starts to move vertically downward under the action of the two winding rollers, and the sample starts to fall toward the lowest position, and the non-woven fabric also folds until the non-woven fabric moves to the range of the rolling plate. At this time, the second electromagnet is powered off, and under the elastic force of the spring, the rolling plate impacts toward the support plate, and the sample in the non-woven fabric is crushed by the impact. If the sample is just a lump, and there are hard impurities in the sample, it will not be broken even under the impact of the rolling plate. Then the non-woven fabric is pulled upward until it returns to its initial position, and the sampling cage starts to rotate, the non-woven fabric is pulled upward, and the non-woven fabric is pulled until the tension sensor returns to the initial value, and finally the non-woven fabric is rotated downward. If the tension sensor still changes in value, it proves that the agglomerate is a hard impurity. If the tension sensor does not change in value, it proves that the agglomerate has been crushed by the impact. 3. When the review is completed, if it is proved that there is indeed agglomeration in the sample in the sampling cage, the first electromagnet is energized to notify the control bracket to rotate, and the first rack is located on the support frame and only when the first electromagnet moves to the top, the first electromagnet contacts the first rack, and the first electromagnet begins to adsorb the first rack and move. The movement of the first rack drives the first gear to rotate, and the rotation of the first gear drives the first bevel gear to rotate. During the rotation of the first gear, the lead screw begins to rotate under the action of the second bevel gear, and the rotation of the control block is limited by the sliding bar, and the control block is driven to move in the vertical direction. At this time, the control block drives the corresponding end of the hose to move upward, and the liquid level at the other end of the hose begins to drop. If agglomerated samples are detected in two sampling cages, the liquid level sensor can identify the presence of agglomeration in the samples in the two sampling cages under the action of the first rack twice. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the present application; Figure 2 is a schematic diagram of a feeding device in Example 1 of the present application; Figure 3 is a schematic diagram of the test mechanism in Example 1 of the present application; Figure 4 is a schematic diagram of a cleaning component according to a first embodiment of the present application; Figure 5 It is a top view of the first rack, the first gear, the first bevel gear, the second bevel gear, and the screw in Example 1 of the present application.

[0018] 1. The hopper is connected to the support frame of the machine. The hopper is connected to the support frame of the machine. The hopper is connected to the support frame of the machine. The hopper is connected to the support frame of the machine. The hopper is connected to the support frame of the machine. The hopper is connected to the support frame of the machine. The hopper is connected to the support frame of the machine. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1-5 This application is described in further detail. Embodiment 1

[0020] The present application embodiment discloses a preparation device for a plastic adhesive containing a maleic anhydride grafted polymer. Figure 1-Figure 5 The preparation equipment of the plastic adhesive containing maleic anhydride grafted polymer includes a mixing device for mixing raw materials, an extrusion device 1 and a granulation device. The extrusion device 1 includes a feeding device, a melting device and an extrusion device. The raw materials are first mixed and then fed into the extrusion device 1 for granulation. The feeding device is used to feed the materials, and the melting device heats and melts the raw materials. The extrusion device adopts a screw in the prior art. In this embodiment, the feeding device needs to detect whether the raw materials are agglomerated.

[0021] The feeding device includes a feeding hopper 2, a detection box 3, a sampling mechanism, a testing mechanism and a review mechanism. The feeding hopper 2 is connected to the melting device and is used to discharge the material. The upper end of the feeding hopper 2 is open. The detection box 3 is arranged above the feeding hopper 2 and a transmission mechanism is arranged at the bottom end of the detection box 3. The transmission mechanism is used to seal the bottom end of the detection box 3. The transmission mechanism includes a transmission motor and a transmission plate. The transmission plate is rotatably connected to the bottom end of the sampling box through a rotating shaft. The rotating shaft is located on the symmetric plane of the transmission plate. The output end of the transmission motor is fixedly connected to one end of the rotating shaft. The transmission motor controls the rotating shaft to rotate. At this time, the transmission plate starts to rotate. There is a gap between the transmission plate and the side wall of the detection box 3. At this time, the raw material enters the feeding hopper from the detection box 3.

[0022] The sampling mechanism is used to sample the raw materials in the detection box 3, the testing mechanism is used to detect whether there is agglomeration in the sample, and the review mechanism is used to re-test the agglomerated sample. The sampling mechanism includes a bracket 4 rotatably arranged on the detection box 3, a plurality of rotating rods 5 arranged on the bracket 4, a rotating motor for realizing the rotation of the bracket 4, a plurality of sampling cages 6 rotatably arranged on the rotating rods 5, and a sampling motor for realizing the rotation of the sampling cage 6. One side of the sampling cage 6 is opened, the bracket 4 is rotatably connected to the detection box 3, and the axis of rotation of the bracket 4 and the detection box 3 is horizontally arranged. The rotating rods 5 are set to four or Any three are acceptable. Four rotating rods 5 are equidistantly arranged on the outside of the bracket 4. The rotating motor is used to control the rotation of the bracket 4. The rotation axis of the sampling cage 6 and the rotating rod 5 is parallel to the rotation axis of the bracket 4, and in the initial state, the opening side of the sampling cage 6 faces the rotation direction of the bracket 4. That is, when the bracket 4 rotates, the sampling cage 6 is controlled to rotate toward the material in the detection box 3, and the opening of the sampling cage 6 faces the material. The plane where the material in the detection box 3 is located is above the lowest point of rotation of the sampling cage 6. Therefore, when the sampling cage 6 rotates to the bottom, the material can enter the sampling cage 6 to complete the sampling of the material.

[0023] The testing mechanism includes a non-woven fabric 7, a winding assembly, a plurality of winding ropes 8, a tension sensor 11 and a buzzer 12. The non-woven fabric 7 is movably arranged at one side of the opening of the sampling cage 6. The winding assembly is used to wind the winding ropes 8. The tension sensor 11 is used to connect any winding rope 8. The tension sensor 11 is electrically connected to the buzzer 12. The number of winding ropes 8 is set to two. The non-woven fabric 7 is movably arranged at the initial position of the sampling cage 6, and the area of ​​the non-woven fabric 7 is larger than the opening area of ​​the sampling cage 6. The winding assembly includes two winding ropes. A winding box, two winding rollers 10 and two winding motors 9, the winding motor 9 is fixed in the winding box, the winding roller 10 is rotatably arranged in the winding box, the winding motor 9 controls the rotation of the winding roller 10, the two winding ropes 8 are respectively fixedly connected to the outer peripheral walls of the two winding rollers 10, the winding box is provided with through holes for the winding ropes 8 to pass through, the winding boxes are respectively arranged on both sides of the sampling cage 6, when the sampling cage 6 starts sampling, the winding ropes 8 are located at the opening of the sampling cage 6; the tension sensor 11 is connected to the honey collector through a PLC controller; Reference Figure 1-Figure 5 After the sampling cage 6 completes sampling, the non-woven fabric 7 is pulled to the position of the opening of the sampling cage 6 under the control of the two winding motors 9. At the same time, the sampling motor controls the sampling cage 6 to start rotating, and the opening of the sampling cage 6 is kept facing upward during the rotation. If the sample is not agglomerated, the sample falls from the gap of the sampling cage 6. If the sample is agglomerated, the material stays in the sampling cage 6. Since the winding rope 8 is in a straight state, the tension of the tension sensor 11 is controlled to be 0 or at a set value in the initial state. After the sample screening is completed, the sampling cage 6 is controlled to rotate to the lower position, and the agglomerated sample in the sampling cage 6 falls onto the non-woven fabric 7. At this time, the value of the tension sensor 11 changes, and the tension sensor 11 controls the buzzer 12 to sound an alarm, proving that there is agglomeration in the sample.

[0024] The review mechanism includes an elastically arranged rolling plate 24, a support plate 25 fixed to the sampling cage 6, and a reciprocating part for realizing the reciprocating motion of the rolling plate 24. A plurality of protrusions 26 are also fixedly connected to the side of the rolling plate 24. The non-woven fabric 7 is located between the support plate 25 and the rolling plate 24. The protrusions 26 impact and roll the samples in the bag of the non-woven fabric 7. The review mechanism is used to judge whether the agglomerated samples are agglomerates or other hard impurities to avoid affecting the detection accuracy. The reciprocating part includes a second electromagnet 27, a reciprocating electric push rod 28 and a spring 29. The rolling plate 24 is fixedly connected to an elastic rod 31 The sampling cage 6 is fixedly connected with a vertical plate 32, and the vertical plate 32 is provided with an elastic hole 30 for the elastic rod 31 to pass through. The spring 29 is sleeved outside the elastic rod 31, and the two ends of the spring 29 are respectively fixedly connected with the rolling plate 24 and the vertical plate 32. The reciprocating electric push rod 28 is fixed on the vertical plate 32, and the reciprocating electric push rod 28 is fixedly connected with the second electromagnet 27. The second electromagnet 27 is adsorbed with the rolling plate 24. In the initial state, the second electromagnet 27 adsorbs the rolling plate 24, and the reciprocating electric push rod 28 controls the rolling plate 24 to move toward the direction of the vertical plate 32. At this time, the spring 29 is in a compressed state.

[0025] Therefore, when the buzzer 12 starts to alarm, under the action of the two winding rollers 10, the non-woven fabric 7 starts to move vertically downward and the sample starts to fall toward the lowest position, and the non-woven fabric 7 also folds until the non-woven fabric 7 moves into the range of the rolling plate 24. At this time, the second electromagnet 27 is powered off, and under the elastic force of the spring 29, the rolling plate 24 impacts toward the support plate 25, and the sample in the non-woven fabric 7 is impacted and broken. If the sample is just a lump, and when there are hard impurities in the sample, it will not be broken even under the impact of the rolling plate 24. Then the non-woven fabric 7 is pulled upward until it returns to its initial position, and the sampling cage 6 starts to rotate, the non-woven fabric 7 is pulled upward, and the non-woven fabric 7 is pulled until the tension sensor 11 returns to its initial value, and finally the non-woven fabric 7 is rotated downward. If the tension sensor 11 still changes in value, it proves that the lump is a hard impurity. If the tension sensor 11 does not change in value, it proves that the lump has been impacted and broken.

[0026] The testing mechanism also includes an identification component, which includes a U-shaped hose 13, a liquid level sensor 14 arranged in either end of the hose 13, and a control unit for controlling the lifting and lowering of the other end of the hose 13. When the hose 13 is in the initial position, both ends are in the same horizontal plane. The liquid level sensor 14 is arranged at a specified position in the hose 13 and is used to identify the presence of agglomeration in the samples in a set number of sampling cages 6. The hose 13 is placed vertically in the initial state, and one end thereof is fixed and unchanged, and the lifting end also needs to ensure that the liquid inside it is in a horizontal state during the movement. As one end of the hose 13 is lifted and lowered, the liquid level at the other end will also change accordingly. In this embodiment, if there are agglomerated samples in two of the four sampling cages 6, it is proved that there is a problem in the stirring of the material, and it needs to be stirred and mixed again. Moreover, each sampling cage 6 triggers the same distance for the active end of the hose 13 to move. Therefore, the liquid level sensor 14 is arranged at a position corresponding to the change of the liquid level in the end of the hose 13 during two lifts. If the liquid level sensor 14 just recognizes that the liquid level is just flush with it, it can also trigger the corresponding buzzer 12 to sound an alarm.

[0027] Reference Figure 1-Figure 5 The control unit includes a support frame 15, a first electromagnet 16, a first rack 17, a first gear 18, a first bevel gear 19, a second bevel gear 20, a screw 21, a slide bar 22 and a control block 23. The first electromagnet 16 is fixed on the corresponding rotating rod 5, the support frame 15 is fixed on the detection box 3, the first rack 17 slides on the support frame 15, the first electromagnet 16 is used to adsorb with the first rack 17, the first gear 18, the first bevel gear 19, and the second bevel gear 20 are all rotatably arranged on the support frame 15, the first gear 18 is meshed with the first rack 17, the first bevel gear 19 is coaxially fixed with the first gear 18, and the second bevel gear 20 is connected to the end of the screw 21. Coaxially fixed, the screw rod 21 rotates on the support frame 15, the slide bar 22 is fixed on the support frame 15, the control block 23 is spirally matched with the screw rod 21, the control block 23 is slidably sleeved on the slide bar 22, the control block 23 is fixedly connected to one end of the hose 13, the length direction of the screw rod 21 and the slide bar 22 is parallel to the length direction of the corresponding end of the hose 13, the first electromagnet 16 just abuts against the first rack 17 when the corresponding sampling cage 6 rotates to the top, so as to realize the adsorption relationship between the first electromagnet 16 and the first rack 17, the axial direction of the first bevel gear 19 is parallel to the axial direction of the first gear 18, and the axial direction of the second bevel gear 20 is vertically set.

[0028] In this embodiment, after the review is completed, if it is proved that there is indeed agglomeration in the sample in the sampling cage 6, the first electromagnet 16 is energized to notify the control bracket 4 to rotate, and the first rack 17 is located on the support frame 15 and only when the first electromagnet 16 moves to the top, the first electromagnet 16 contacts the first rack 17, and the first electromagnet 16 begins to absorb the first rack 17 to move, and the first rack 17 drives the first gear 18 to rotate during the movement of the first gear 18, and the first bevel gear 19 drives the first bevel gear 19 to rotate during the rotation of the first gear 18, and the first bevel gear 19 is rotated during the rotation of the second bevel gear 20. Under the action, the screw rod 21 starts to rotate, the rotation of the control block 23 is restricted by the slide bar 22, and the control block 23 is driven to move in the vertical direction. At this time, the control block 23 drives the corresponding end of the hose 13 to move upward, and the liquid level at the other end of the hose 13 begins to drop. If agglomerated samples are detected in two sampling cages 6, under the action of the first rack 17 twice, the liquid level sensor 14 can identify the presence of agglomeration in the samples in the two sampling cages 6. After the detection work is completed, the first rack 17 can be reset manually, or the first rack 17 can be pushed to the initial position by an electric push rod or other equipment.

[0029] When the inspection is completed, the non-woven fabric 7 needs to be cleaned. The cleaning component includes a flapping rod 34, an elastic member 35, and an adjusting part for controlling the reciprocating swing of the flapping rod 34. The flapping rod 34 is rotatably connected to the side wall of the opening of the sampling cage 6. The flapping rod 34 and the sampling cage 6 are connected by an elastic member 35. The elastic member 35 adopts a torsion spring in this embodiment. When the flapping rod 34 is away from the sampling cage 6, the elastic member 35 is in a deformed state; the adjusting part includes an adjusting electric push rod 36, an adjusting electromagnet 37, an adjusting gear 38 and an adjusting rack 33. The adjusting gear 38 is fixedly connected to the end of the flapping rod 34, and the adjusting gear 38 is meshed with the adjusting rack 33. The adjusting electric push rod 36 The output end is fixedly connected to the adjusting electromagnet 37, and the adjusting electromagnet 37 is adsorbed and connected to the adjusting rack 33; in the initial state, the adjusting electric push rod 36 controls the adjusting electromagnet 37 to move in the direction away from the opening of the sampling cage 6, and under the cooperation of the adjusting rack 33 and the adjusting gear 38, the beating rod 34 swings in the direction away from the sampling cage 6. When the detection work is completed, the adjusting electromagnet 37 is powered off, and under the action of the elastic member 35, the beating rod 34 beats in the direction of the non-woven fabric 7, and at this time, the sampling motor controls the sampling cage 6 to rotate, and rotates the non-woven fabric 7 to the top. At this time, under the beating action of the beating rod 34, the sample on the non-woven fabric 7 falls from the sampling cage 6.

[0030] The implementation principle of the device for preparing a plastic adhesive containing a maleic anhydride grafted polymer in the embodiment of the present application is as follows: when the bracket 4 rotates, the sampling cage 6 is controlled to rotate toward the material in the detection box 3, and the opening of the sampling cage 6 faces the material. The plane where the material in the detection box 3 is located is located above the lowest point of the sampling cage 6. Therefore, when the sampling cage 6 rotates to the bottom, the material can enter the sampling cage 6 to complete the sampling of the material; Under the control of the two winding motors 9, the non-woven fabric 7 is pulled to the position of the opening of the sampling cage 6. At the same time, the sampling motor controls the sampling cage 6 to start rotating, and the opening of the sampling cage 6 is always kept upward during the rotation. If the sample is not agglomerated, the sample will fall from the gap of the sampling cage 6. If the sample is agglomerated, the material will remain in the sampling cage 6. Since the winding rope 8 is in a straight state, the tension of the tension sensor 11 is controlled to be 0 or at a set value in the initial state. After the sample screening is completed, the sampling cage 6 is controlled to rotate to the lower position, and the agglomerated sample in the sampling cage 6 falls onto the non-woven fabric 7. At this time, the value of the tension sensor 11 changes, and the tension sensor 11 controls the buzzer 12 to sound an alarm, proving that there is agglomeration in the sample.

[0031] After the buzzer 12 starts to alarm, under the action of the two winding rollers 10, the non-woven fabric 7 starts to move vertically downward and the sample starts to fall toward the lowest position, and the non-woven fabric 7 also folds until the non-woven fabric 7 moves into the range of the rolling plate 24. At this time, the second electromagnet 27 is powered off, and under the elastic force of the spring 29, the rolling plate 24 impacts toward the support plate 25, and the sample in the non-woven fabric 7 is impacted and broken. If the sample is just a lump, and when there are hard impurities in the sample, it will not be broken even under the impact of the rolling plate 24. Then the non-woven fabric 7 is pulled upward until it returns to its initial position, and the sampling cage 6 starts to rotate, the non-woven fabric 7 is pulled upward, and the non-woven fabric 7 is pulled until the tension sensor 11 returns to its initial value, and finally the non-woven fabric 7 is rotated downward. If the tension sensor 11 still changes in value, it proves that the lump is a hard impurity. If the tension sensor 11 does not change in value, it proves that the lump has been impacted and broken.

[0032] When the review is completed, if it is proved that there is indeed agglomeration in the sample in the sampling cage 6, the first electromagnet 16 is energized to notify the control bracket 4 to rotate, and the first rack 17 is located on the support frame 15 and only when the first electromagnet 16 moves to the top, the first electromagnet 16 contacts the first rack 17, and the first electromagnet 16 begins to absorb the first rack 17 to move, and the first rack 17 drives the first gear 18 to rotate during the movement of the first rack 17, and the first gear 18 drives the first bevel gear 19 to rotate during the rotation of the first gear 18. During the rotation of the first bevel gear 19, the screw rod 21 starts to rotate under the action of the second bevel gear 20, and the rotation of the control block 23 is limited by the slide bar 22, and the control block 23 is driven to move in the vertical direction. At this time, the control block 23 drives the corresponding end of the hose 13 to move upward, and the liquid level at the other end of the hose 13 begins to drop. If there are samples with agglomeration detected in two sampling cages 6, under the action of the first rack 17 twice, the liquid level sensor 14 can identify that there is agglomeration in the samples in the two sampling cages 6.

[0033] In the initial state, the adjusting electric push rod 36 controls the adjusting electromagnet 37 to move in the direction away from the opening of the sampling cage 6. Under the cooperation of the adjusting rack 33 and the adjusting gear 38, the beating rod 34 swings in the direction away from the sampling cage 6. When the detection work is completed, the adjusting electromagnet 37 is powered off. Under the action of the elastic member 35, the beating rod 34 beats in the direction of the non-woven fabric 7. At this time, the sampling motor controls the rotation of the sampling cage 6 to rotate the non-woven fabric 7 upwards. At this time, under the beating action of the beating rod 34, the sample on the non-woven fabric 7 falls from the sampling cage 6 Embodiment 2

[0034] The present application embodiment discloses a plastic adhesive containing a maleic anhydride grafted polymer. Figure 1 The plastic adhesive containing maleic anhydride grafted polymer has the following raw material components by weight: 40 parts of ethylene-vinyl acetate copolymer, 10 parts of maleic anhydride grafted polymer, 40 parts of thickener and 10 parts of regulator. Among them, the content of vinyl acetate in the ethylene-vinyl acetate copolymer is 30%. When the above adhesive is used to bond plastic products, it has the advantages of strong bonding force and not easy to fall off. The preparation process of the adhesive is simple, and no solvent is needed in the reaction process, which can avoid the pollution to the environment and the danger of flammability. It has high production efficiency and low cost, and has good economic benefits and industrial production prospects.

[0035] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A preparation device for a plastic adhesive containing a maleic anhydride grafted polymer, Features: It comprises a mixing device for mixing raw materials, an extrusion device (1) and a granulation device, wherein the extrusion device (1) comprises a feeding device, a melting device and an extrusion device; The feeding device comprises a feeding hopper (2), a detection box (3), a sampling mechanism, a testing mechanism and a review mechanism; the feeding hopper (2) is connected to the melting device and is used to feed the material; the detection box (3) is arranged above the feeding hopper (2) and a transmission mechanism is arranged at the bottom of the detection box (3); the sampling mechanism is used to perform sampling on the raw materials in the detection box (3); the testing mechanism is used to detect whether there is agglomeration in the sample sample; and the review mechanism is used to re-test the agglomerated sample.

2. The preparation device of the plastic adhesive containing maleic anhydride grafted polymer according to claim 1, Features: The sampling inspection mechanism comprises a bracket (4) rotatably arranged on the detection box (3), a plurality of rotating rods (5) arranged on the bracket (4), a rotating motor for realizing the rotation of the bracket (4), a plurality of sampling inspection cages (6) rotatably arranged on the rotating rods (5), and a sampling inspection motor for realizing the rotation of the sampling inspection cage (6); one side of the sampling inspection cage (6) is arranged to be open.

3. The preparation device of the plastic adhesive containing maleic anhydride grafted polymer according to claim 2, Features: The testing mechanism comprises a non-woven fabric (7), a winding assembly, a plurality of winding ropes (8), a tension sensor (11) and a buzzer (12); the non-woven fabric (7) is movably arranged on one side of the opening of the sampling cage (6); the winding assembly is used to wind the winding rope (8); the tension sensor (11) is used to connect any one of the winding ropes (8); and the tension sensor (11) is electrically connected to the buzzer (12).

4. The preparation device of the plastic adhesive containing maleic anhydride grafted polymer according to claim 3, Features: The testing mechanism further comprises an identification component, the identification component comprising a U-shaped hose (13), a liquid level sensor (14) arranged in either end of the hose (13), and a control unit for controlling the lifting and lowering of the other end of the hose (13); the two ends of the hose (13) are in the same horizontal plane when in an initial position; the liquid level sensor (14) is arranged in a specified position in the hose (13) and is used to identify the presence of agglomeration in a set number of samples in the sampling cage (6).

5. The preparation device of the plastic adhesive containing maleic anhydride grafted polymer according to claim 4, Features: The control unit comprises a support frame (15), a first electromagnet (16), a first rack (17), a first gear (18), a first bevel gear (19), a second bevel gear (20), a screw rod (21), a slide rod (22) and a control block (23), wherein the first electromagnet (16) is fixed on the corresponding rotating rod (5), the support frame (15) is fixed on the detection box (3), the first rack (17) slides on the support frame (15), the first electromagnet (16) is used to be adsorbed with the first rack (17), the first gear (18), the first bevel gear (19), the second bevel gear (20) ) are rotatably arranged on the support frame (15), the first gear (18) is meshedly connected with the first rack (17), the first bevel gear (19) is coaxially fixed with the first gear (18), the second bevel gear (20) is coaxially fixed with the end of the screw rod (21), the screw rod (21) is rotatably arranged on the support frame (15), the slide rod (22) is fixed on the support frame (15), the control block (23) is spirally matched with the screw rod (21), the control block (23) is slidably sleeved on the slide rod (22), and the control block (23) is fixedly connected to one end of the hose (13).

6. The preparation device of the plastic adhesive containing maleic anhydride grafted polymer according to claim 4, Features: The review mechanism includes an elastically arranged rolling plate (24), a support plate (25) fixed to the sampling cage (6), and a reciprocating portion for realizing the reciprocating motion of the rolling plate (24), and a plurality of protrusions (26) are fixedly connected to the side of the rolling plate (24), and the non-woven fabric (7) is located between the support plate (25) and the rolling plate (24), and the protrusions (26) impact and roll the sample in the bag of the non-woven fabric (7).

7. The preparation device of the plastic adhesive containing maleic anhydride grafted polymer according to claim 6, Features: The reciprocating part includes a second electromagnet (27), a reciprocating electric push rod (28) and a spring (29); the rolling plate (24) is fixedly connected to an elastic rod (31); the sampling cage (6) is fixedly connected to a vertical plate (32); the vertical plate (32) is provided with an elastic hole (30) for the elastic rod (31) to pass through; the spring (29) is sleeved outside the elastic rod (31); the two ends of the spring (29) are respectively fixedly connected to the rolling plate (24) and the vertical plate (32); the reciprocating electric push rod (28) is fixed on the vertical plate (32); the reciprocating electric push rod (28) is fixedly connected to the second electromagnet (27); and the second electromagnet (27) is adsorbed to the rolling plate (24).

8. The preparation device of the plastic adhesive containing maleic anhydride grafted polymer according to claim 7, Features: The cleaning assembly comprises a beating rod (34), an elastic member (35), and an adjusting portion for controlling the reciprocating swing of the beating rod (34); the beating rod (34) is rotatably connected to the side wall at the opening of the sampling cage (6); and the beating rod (34) is connected to the sampling hole via the elastic member (35).

9. The preparation device of the plastic adhesive containing maleic anhydride grafted polymer according to claim 8, Features: The adjusting part comprises an adjusting electric push rod (36), an adjusting electromagnet (37), an adjusting gear (38) and an adjusting rack (33); the adjusting gear (38) is fixedly connected to the end of the beating rod (34); the adjusting gear (38) is meshingly connected to the adjusting rack (33); the output end of the adjusting electric push rod (36) is fixedly connected to the adjusting electromagnet (37); and the adjusting electromagnet (37) is adsorbedly connected to the adjusting rack (33).

10. A plastic adhesive containing a maleic anhydride grafted polymer, prepared by using the preparation device for a plastic adhesive containing a maleic anhydride grafted polymer according to any one of claims 1 to 9, Features: The raw material components are as follows by weight: 40 parts of ethylene-vinyl acetate copolymer, 10 parts of maleic anhydride grafted polymer, 40 parts of thickener and 10 parts of regulator. Among them, the content of vinyl acetate in the ethylene-vinyl acetate copolymer is 30%.

Images