Direct-drive electric glue melting all-in-one machine

Abstract

The utility model discloses a direct-drive electric glue melting all-in-one machine, and relates to the technical field of electric glue melting equipment. The all-in-one machine body comprises an alternating current motor, and a driver is arranged on the top of the alternating current motor. The frequency conversion fan is matched with the radiator to carry out efficient heat dissipation on the driver, and the water inlet and the water outlet are matched to drive the alternating current motor to do work to generate heat in a liquid cooling heat dissipation mode, so that high reliability and high environmental adaptability of a product under continuous operation are guaranteed, the sealing ring is matched with the waterproof ring to carry out all-directional sealing on the driver, and the service life of the product is prolonged. The thin-film capacitor can protect a circuit, effectively adjust the voltage of the driver, balance the power of the circuit, further protect the circuit from high-voltage impact and transient damage, improve power factors, save energy, reduce emission and reduce power consumption, is not provided with a speed reducing mechanism, can improve the efficiency of the machine and reduce noise, does not need lubrication and maintenance, and is suitable for popularization and application. Therefore, the equipment failure rate caused by heat damage, lubricant aging and the like is reduced, and the service life of the product is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of electric glue melting equipment, in particular to a direct-drive electric glue melting integrated machine. Background Technique

[0002] The electric glue melting solution mainly adopts the scheme of Siemens frequency converter plus asynchronous motor and gearboxes such as Zhang Beiluo. This scheme has been too costly for a long time and has been gradually replaced by hydraulic motors. At present, high-power hydraulic motors are mainly imported brands, which are expensive, have a long delivery period, have increased internal leakage, reduced efficiency, and increased energy consumption after long-term use. Once damaged, the maintenance cost is too high. In recent years, through continuous pursuit, injection molding machine customers in specific industries such as automotive parts, trash cans, PET, and fruit basket machines have gradually increased their demand for electric glue melting. With the cost reduction of key products such as high-power drivers, high-torque motors, and domestic reducers, their performance can be achieved and their service life is reliable. The electric glue melting solution is slowly replacing the imported hydraulic motor solution. Currently, the following are the main methods for pre-plasticizing and melting glue in injection molding machines:

[0003] (1) The first method is to use a hydraulic motor to drive the plasticizing screw to rotate for glue melting. Its working principle is that a servo motor drives a hydraulic oil pump, the hydraulic oil pump drives a hydraulic motor, and the hydraulic motor drives the plasticizing screw to rotate to provide torque. After multiple conversions, the final conversion efficiency is only about 66.8% - 72.7%. Then, according to the operating conditions of the injection molding machine, the system pressure during glue melting is usually about 12 mpa, and the maximum speed of the servo pump is usually 2100 revolutions. (Conversion process during glue melting: servo motor - hydraulic pump - hydraulic pipeline - hydraulic valve plate - hydraulic valve - hydraulic pipeline - hydraulic motor) Calculated according to this operating condition, the efficiency of a general servo motor is 92.6% - 93.4%, the efficiency of the oil pump is about 87.8% - 91.6%, the efficiency of the hydraulic pipeline is 97.5% - 98.6%, the efficiency of the hydraulic valve plate valve is 97% - 98.3%, the efficiency of the hydraulic pipeline is 98% - 99%, and the efficiency of the hydraulic motor is about 88% - 90%. The comprehensive efficiency is about 78.6%. This method has a low comprehensive efficiency due to multiple conversions;

[0004] (2) The second method is to use a motor to directly drive the plasticizing screw to rotate for glue melting. This method requires a large torque for the motor. Currently, large-torque motors on the market are generally large in volume and require a very large-power driver, resulting in a very high overall construction cost;

[0005] (3) The third type is to use a standard servo motor in combination with a traditional reduction gearbox to drive the plasticizing screw. The connection between the traditional reduction gearbox and the standard servo motor is not well-matched. Therefore, an additional transition flange and coupling are required to connect with the standard servo motor. In this way, a servo motor with a small torque can be selected. Such a standard servo motor is usually much smaller in external dimensions than a hydraulic motor, but longer in the axial direction. After the reduction gearbox is installed in combination with the transition flange and coupling and then connected to the plasticizing screw to form an electro-melting glue structure, it has a large self-weight and a long axial length, which easily causes the rear end of the screw pre-plasticizing seat to sag, resulting in screw eccentricity. At this time, corresponding support needs to be provided for the motor to avoid the problem of screw eccentricity. This requires increasing the length of the machine base to support the motor, which increases the manufacturing cost of the injection molding machine to a certain extent. At the same time, it also greatly increases the overall dimensions of the machine in the axial direction, and a factory building with a large placement space needs to be configured, which is not conducive to controlling the manufacturing cost. Summary of the Invention

[0006] To achieve the above object, the utility model provides the following technical solution: A direct-drive electro-melting glue integrated machine, including an integrated machine main body, the integrated machine main body includes an AC motor, a driver is arranged on the top of the AC motor, a drive box cover is arranged on the top of the driver, a motor wire outlet hole corresponding to the inside of the driver is arranged on the top of the AC motor, a variable-frequency fan and a radiator located on one side of the variable-frequency fan are arranged inside the drive box cover, a circuit board is arranged inside the driver, an IGBT module is arranged on the top of the circuit board, the top of the IGBT module extends into the inside of the drive box cover and fits with the bottom of the radiator, and the driver is internally provided with at least one film capacitor.

[0007] As a preferred technical solution of the utility model, the radiator includes a radiator base, and at least one heat sink is arranged on the top of the radiator base.

[0008] As a preferred technical solution of the utility model, an IGBT module docking groove is arranged at the bottom of the radiator base, and the top of the IGBT module extends into the inside of the IGBT module docking groove and fits with the inner wall top of the IGBT module docking groove.

[0009] As a preferred technical solution of the utility model, a waterproof ring is arranged at the bottom of the radiator base and located outside the IGBT module docking groove, and the bottom of the waterproof ring fits with the top of the driver.

[0010] As a preferred technical solution of the utility model, the number of film capacitors is at least two. One ends of the two film capacitors are connected by a copper bar, and the other ends extend to one side of the driver and are threadedly sleeved with waterproof nuts.

[0011] As a preferred technical solution of the present utility model, three-phase power access terminals are provided on the top of the circuit board on one side of the IGBT module, a junction box is provided on the top of the driver on one side of the drive box cover, the top ends of the three-phase power access terminals extend into the interior of the junction box, a junction box cover is provided on the top of the junction box, and a waterproof coil is sleeved on one side of the junction box.

[0012] As a preferred technical solution of the present utility model, a rear end cover is provided on the top of the AC motor, the rear end cover is conical, a motor wire outlet hole is arranged inside the rear end cover, a circular groove is provided on the top of the rear end cover, and an end cover pressing plate embedded inside the circular groove is provided at the bottom of the driver.

[0013] As a preferred technical solution of the present utility model, a sealing ring is arranged between the interior of the circular groove and the bottom of the end cover pressing plate, a through hole is provided on the top of the driver, and the top of the IGBT module is sleeved with the through hole.

[0014] As a preferred technical solution of the present utility model, an air inlet and an air outlet are respectively arranged on both sides of the drive box cover, the air inlet is on one side of the radiator, and the air outlet is on one side of the variable-frequency fan.

[0015] As a preferred technical solution of the present utility model, an oil seal sleeved with the output shaft of the AC motor is nested at the bottom of the AC motor, a water inlet and a water outlet on one side of the water inlet are arranged on one side of the AC motor, and mounting plates are further arranged on both sides of the AC motor.

[0016] Compared with the prior art, the present utility model provides a direct drive electric melting glue machine, which has the following beneficial effects:

[0017] For this direct drive electric melting glue machine, the variable-frequency fan cooperates with the radiator to efficiently dissipate heat from the driver, and cooperates with the water inlet and the water outlet to drive the heat generated by the work of the AC motor through the liquid cooling heat dissipation method, thereby ensuring high reliability and high environmental adaptability under the continuous operation of the product. The sealing ring cooperates with the waterproof ring to provide all-round sealing for the driver. The film capacitor can protect the circuit, effectively regulate the voltage of the driver, balance the circuit power, and further protect the circuit from high-voltage impact and short-term damage. It can improve the power factor, save energy and reduce emissions, and reduce power consumption. Without a speed reduction mechanism, it can improve the efficiency of the machine and reduce noise, and does not require lubrication and maintenance, thereby reducing the equipment failure rate caused by reasons such as thermal damage and lubricant aging, and greatly increasing the service life of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of a direct drive electric melting glue machine proposed by the present utility model;

[0019] Figure 2 The side view of the structure of a direct-drive electro-melting glue integrated machine proposed by the present utility model;

[0020] Figure 3 The schematic diagram of the oil seal structure of a direct-drive electro-melting glue integrated machine proposed by the present utility model;

[0021] Figure 4 The sectional view of the main body structure of a direct-drive electro-melting glue integrated machine proposed by the present utility model;

[0022] Figure 5 The schematic diagram of the junction box structure of a direct-drive electro-melting glue integrated machine proposed by the present utility model;

[0023] Figure 6 The exploded view of the driver structure of a direct-drive electro-melting glue integrated machine proposed by the present utility model;

[0024] Figure 7 The schematic diagram of the radiator structure of a direct-drive electro-melting glue integrated machine proposed by the present utility model;

[0025] Figure 8 The exploded view of the main body structure of a direct-drive electro-melting glue integrated machine proposed by the present utility model.

[0026] In the figure: 1. Main body of the integrated machine; 11. AC motor; 111. Round groove; 112. Sealing ring; 113. Mounting plate; 114. Output shaft; 115. Oil seal; 116. Rear end cover; 117. Motor wire outlet hole; 12. Driver; 121. Junction box; 122. Junction box cover; 123. Waterproof coil; 124. End cover pressing plate; 125. Through hole; 13. Drive box cover; 131. Air inlet; 132. Air outlet; 14. Variable frequency fan; 15. Circuit board; 151. IGBT module; 152. Three-phase power access terminal; 16. Radiator; 161. Radiator base; 162. Heat sink; 163. IGBT module docking slot; 164. Waterproof ring; 17. Film capacitor; 171. Copper row; 172. Waterproof nut; 18. Water inlet; 19. Water outlet. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0028] Please refer to Figure 1-8, A direct-drive electric melting glue integrated machine, including an integrated machine main body 1. The integrated machine main body 1 includes an AC motor 11. At the top of the AC motor 11, there is a driver 12. At the top of the driver 12, there is a drive box cover 13. At the top of the AC motor 11, there is a motor wire outlet hole 117 corresponding to the inside of the driver 12. Inside the drive box cover 13, there is a variable-frequency fan 14 and a radiator 16 on one side of the variable-frequency fan 14. Inside the driver 12, there is a circuit board 15. On the top of the circuit board 15, there is an IGBT module 151. The top of the IGBT module 151 extends into the inside of the drive box cover 13 and fits against the bottom of the radiator 16. Inside the driver 12, there is a number of film capacitors 17 not less than one. The setting of the motor wire outlet hole 117 enables the AC motor 11 to directly lead out wires from the rear end cover 116, completely eliminating the previous concerns about waterproofing. Between the end cover pressing plate 124 and the circular groove 111 at the top of the rear end cover 116, there is a sealing ring 112. The end cover pressing plate 124 and the circular groove 111 are fixed by screws, ensuring the sealing between the driver 12 and the AC motor 11. The circuit board 15 is electrically connected to the AC motor 11. The circuit board 15, the film capacitor 17, the IGBT module 151, and the three-phase power access terminal 152 form the driver 12. The traditional hydraulic oil pump power system is upgraded to a servo hydraulic system, reducing the energy consumption of the injection molding machine by more than 39.6%. The AC motor 11 is directly driven, with higher efficiency and more energy-saving. The melting of glue accounts for 50%-60% of the total energy consumption, saving at least 15-40%.

[0029] As a specific technical solution of this embodiment, the radiator 16 includes a radiator base 161. At the top of the radiator base 161, there is a number of radiator fins 162 not less than one. At the bottom of the radiator base 161, there is an IGBT module docking groove 163. The top of the IGBT module 151 extends into the inside of the IGBT module docking groove 163 and fits against the inner top wall of the IGBT module docking groove 163. At the bottom of the radiator base 161, there is a waterproof ring 164 around the outside of the IGBT module docking groove 163. The bottom of the waterproof ring 164 fits against the top of the driver 12. Between the top of the IGBT module 151 and the IGBT module docking groove 163, there is thermal conductive silicone grease coated, which can accelerate the conduction of heat and further ensure the heat dissipation effect. The setting of the waterproof ring 164 ensures the sealing between the radiator 16 and the IGBT module 151. Used in conjunction with the sealing ring 112, this ensures the overall sealing of the driver 12. The electronic components inside the driver 12 are in a sealed and highly protected space state, meeting the IP54-level protection design and can operate in more severe environments.

[0030] As a specific technical solution of this embodiment, the number of the thin-film capacitors 17 is at least two. One ends of the two thin-film capacitors 17 are connected by a copper bar 171, and the other ends extend to one side of the driver 12 and are threadedly sleeved with waterproof nuts 172. The two thin-film capacitors 17 are connected in series through the copper bar 171. In order to complete a series of complex actions and the back-and-forth switching of height and speed, it poses a great test to the AC motor 11 and the circuit. Through the two thin-film capacitors 17, the circuit can be filtered and adjusted, and electrical energy can be released, so as to realize the suppression and filtering of the circuit, change the circuit working state and harmonic influence, thereby improving the efficiency and reliability of the whole system. Secondly, the thin-film capacitors 17 can protect the circuit, effectively adjust the voltage of the driver 12, balance the circuit power, and further protect the circuit from high-voltage impact and short-term damage. The thin-film capacitors 17 can also improve the power factor, save energy and reduce emissions, and reduce power consumption. It is not driven by a servo motor or a speed reduction mechanism, has a simple structure, directly gives an instruction to the driver 12, and then drives the AC motor 11 to operate without a speed reduction mechanism, without lubrication and maintenance. The AC motor 11 is equipped with an encoder, and closed-loop control is achieved through the feedback of the encoder, with high speed stability.

[0031] As a specific technical solution of this embodiment, three-phase power access terminals 152 are arranged on the top of the circuit board 15 on one side of the IGBT module 151, a junction box 121 is arranged on the top of the driver 12 on one side of the drive box cover 13, the top ends of the three-phase power access terminals 152 extend into the interior of the junction box 121, a junction box cover 122 is arranged on the top of the junction box 121, and a waterproof coil 123 is sleeved on one side of the junction box 121. The setting of the waterproof coil 123 can seal the position where the wire penetrates into the interior of the junction box 121, further ensuring the overall waterproof and sealing performance of the product, and making the installation more convenient. There is no need for a traditional driver 12 to be independent in a box, achieving a two-in-one structure with light weight. Open the junction box cover 122, pass the wire through the waterproof coil 123 and connect it to the three-phase power access terminal 152. After completing the wiring operation, close the junction box cover 122 and lock it with screws, which is convenient to operate and has higher safety performance.

[0032] As a specific technical solution of this embodiment, a rear end cover 116 is arranged on the top of the AC motor 11. The rear end cover 116 is conical. A motor wire outlet hole 117 is arranged inside the rear end cover 116. A circular groove 111 is arranged on the top of the rear end cover 116. A end cover pressing plate 124 embedded inside the circular groove 111 is arranged on the bottom of the driver 12. The end cover pressing plate 124 and the circular groove 111 are fixed by screws. After the end cover pressing plate 124 is fixed, a sealing ring 112 is pressed tightly to achieve waterproof sealing.

[0033] As a specific technical solution of this embodiment, a sealing ring 112 is provided between the inside of the circular groove 111 and the bottom of the end cover pressing plate 124. A through hole 125 is provided at the top of the driver 12. The top of the IGBT module 151 is sleeved with the through hole 125. The through hole 125 is matched with the IGBT module 151 in size. The top of the IGBT module 151 passes through the through hole 125 and contacts the IGBT module docking groove 163. The heat generated by the IGBT module 151 can be taken away in time by the radiator 16.

[0034] As a specific technical solution of this embodiment, an air inlet 131 and an air outlet 132 are respectively provided on both sides of the drive box cover 13. The air inlet 131 is located on one side of the radiator 16, and the air outlet 132 is located on one side of the variable-frequency fan 14. An oil seal 115 sleeved with the output shaft 114 of the AC motor 11 is nested at the bottom of the AC motor 11. A water inlet 18 and a water outlet 19 on one side of the water inlet 18 are provided on one side of the AC motor 11. Mounting plates 113 are also provided on both sides of the AC motor 11. The AC motor 11 can be fixed at the position where it needs to be installed through the mounting plates 113. When the direct-drive electric hot melt adhesive machine is continuously working, a large amount of heat will be released by the IGBT module 151 and other electronic components on the circuit board 15. To ensure the stable reliability of the driver 12, the heat of the IGBT module 151 and the electronic components will be conducted to the heat sink 162 through the radiator 16. The heat sink 162 has a large contact area with the air, which is more conducive to heat dissipation. The large-area air inlet 131 and air outlet 132 enable air convection. When the variable-frequency fan 14 is started, under the action of the variable-frequency fan 14, the heat in the driver 12 is driven and then discharged through the air outlet 132. The variable-frequency fan 14 is electrically connected to the circuit board 15. The driver 12 can adjust the rotation speed of the variable-frequency fan 14 according to the temperature change, so as to maintain the overall operation and ensure the normal operation of each component. To further cool the product, the water inlet 18 and the water outlet 19 are provided. The liquid cooling medium takes away the heat generated by the AC motor 11 itself through the water inlet hole and then flows out through the water outlet 19. In this way, the cycle runs to maintain the temperature stability of the AC motor 11 under high and low loads and continuous operation, so as to ensure the high reliability and high environmental adaptability of the product under continuous operation.

[0035] In summary, for the direct drive electro-melting glue integrated machine, the variable frequency fan 14 and the radiator 16 are used to efficiently dissipate heat from the driver 12. The inlet 18 and the outlet 19 are used to drive the heat generated by the AC motor 11 to do work through liquid cooling, so as to ensure high reliability and high environmental adaptability during the continuous operation of the product. The sealing ring 112 and the waterproof ring 164 are used to completely seal the driver 12. The film capacitor 17 can protect the circuit, effectively regulate the voltage of the driver 12, balance the circuit power, and further protect the circuit from high voltage impact and short-term damage. It can improve the power factor, save energy and reduce emissions, and reduce power consumption. Without a speed reduction mechanism, the efficiency of the machine can be improved and the noise can be reduced. Without lubrication and maintenance, the failure rate of the equipment caused by thermal damage and lubricant aging can be reduced, and the service life of the product can be greatly increased.

[0036] It should be noted that in this article, terms such as "including", "comprising" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0037] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A direct-drive electric melting glue all-in-one machine, comprising an all-in-one machine main body (1), characterized in that: The all-in-one machine main body (1) includes an AC motor (11). A driver (12) is arranged on the top of the AC motor (11). A drive box cover (13) is arranged on the top of the driver (12). A motor wire outlet hole (117) corresponding to the inside of the driver (12) is arranged on the top of the AC motor (11). A variable-frequency fan (14) and a radiator (16) located on one side of the variable-frequency fan (14) are arranged inside the drive box cover (13). A circuit board (15) is arranged inside the driver (12). An IGBT module (151) is arranged on the top of the circuit board (15). The top of the IGBT module (151) extends into the inside of the drive box cover (13) and fits against the bottom of the radiator (16). The driver (12) internally has at least one film capacitor (17).

2. The direct-drive electric hot-melt adhesive integrated machine according to claim 1, wherein: The radiator (16) includes a radiator base (161). At least one heat sink fin (162) is arranged on the top of the radiator base (161).

3. The direct-drive electric hot-melt adhesive integrated machine according to claim 1, characterized in that: An IGBT module docking groove (163) is arranged at the bottom of the radiator base (161). The top of the IGBT module (151) extends into the inside of the IGBT module docking groove (163) and fits against the inner top wall of the IGBT module docking groove (163).

4. The direct drive electric hot melt adhesive integrated machine according to claim 1, characterized in that: A waterproof ring (164) is arranged in a circle at the bottom of the radiator base (161) outside the IGBT module docking groove (163). The bottom of the waterproof ring (164) fits against the top of the driver (12).

5. The direct-drive electric hot-melt adhesive integrated machine according to claim 1, characterized in that: The number of the film capacitors (17) is at least two. One ends of the two film capacitors (17) are connected by a copper bar (171), and the other ends extend to one side of the driver (12) and are threadedly sleeved with waterproof nuts (172).

6. The direct-drive electric hot-melt adhesive integrated machine according to claim 1, characterized in that: A three-phase power access terminal (152) is arranged on the top of the circuit board (15) on one side of the IGBT module (151). A junction box (121) is arranged on the top of the driver (12) on one side of the drive box cover (13). The top end of the three-phase power access terminal (152) extends into the inside of the junction box (121). A junction box cover (122) is arranged on the top of the junction box (121). A waterproof coil (123) is sleeved on one side of the junction box (121).

7. The direct-drive electric hot-melt adhesive integrated machine according to claim 1, characterized in that: A rear end cover (116) is arranged on the top of the AC motor (11). The rear end cover (116) is conical. The motor wire outlet hole (117) is arranged inside the rear end cover (116). A round groove (111) is arranged on the top of the rear end cover (116). An end cover pressing plate (124) embedded inside the round groove (111) is arranged at the bottom of the driver (12).

8. The direct-drive electric hot-melt glue integrated machine according to claim 1, characterized in that: A sealing ring (112) is arranged between the inside of the round groove (111) and the bottom of the end cover pressing plate (124). A through hole (125) is arranged on the top of the driver (12). The top of the IGBT module (151) is sleeved with the through hole (125).

9. The direct-drive electric hot melt adhesive machine according to claim 1, wherein: On both sides of the drive box cover (13), an air inlet (131) and an air outlet (132) are respectively arranged. The air inlet (131) is located on one side of the radiator (16), and the air outlet (132) is located on one side of the variable frequency fan (14).

10. A direct-drive electric hot-melt adhesive integrated machine according to claim 1, characterized in that: At the bottom of the AC motor (11), an oil seal (115) sleeved on the output shaft (114) of the AC motor (11) is nested. On one side of the AC motor (11), a water inlet (18) and a water outlet (19) located on one side of the water inlet (18) are arranged. On both sides of the AC motor (11), mounting plates (113) are also arranged.

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