Burr removing device and method for injection molding product

Abstract

The invention discloses a burr removing device and method for an injection product. The burr removing device for the injection product comprises a cooling box body, the cooling box body is provided with an output port, the output port is communicated with the cooling mechanism, and the cooling mechanism conveys a cooling medium into the cooling box body through the output port; the roller is arranged in the cooling box body and is used for accommodating an injection product; the rotary driving mechanism is connected with the roller and used for driving the roller to rotate; and the cooling box body is provided with a nozzle, the nozzle is communicated with the spraying mechanism, and the spraying mechanism sprays particles into the roller through the nozzle so as to remove burrs on the injection molding product in the roller. The burr removing efficiency can be improved, and the quality of a product obtained after burr removing can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of surface processing, and particularly relates to a burr removal device and method for injection molded products. Background Art

[0002] At present, after the body of an injection molded part is formed, most of them use the traditional method of manually removing the burrs at the mold joint with a blade. However, the manual deburring method often has low efficiency, and there is also the uncertainty of manual operation, which is prone to the situation of missed burr removal or incomplete burr removal. If such products flow into the client and are assembled onto a vehicle, the consequences will be unthinkable. Summary of the Invention

[0003] The purpose of the present invention is to solve the problems of low efficiency and poor quality in manual burr removal in the prior art. The present invention provides a burr removal device and method for injection molded products, which can improve the burr removal efficiency and the quality of the products after burr removal.

[0004] To solve the above technical problems, an embodiment of the present invention provides a burr removal device for injection molded products, including:

[0005] A cooling box body;

[0006] A cooling mechanism, an output port is provided on the cooling box body, the output port is connected to the cooling mechanism, and the cooling mechanism conveys a cooling medium into the cooling box body through the output port;

[0007] A drum, which is arranged inside the cooling box body and is used to accommodate injection molded products;

[0008] A rotary drive mechanism, which is connected to the drum and is used to drive the drum to rotate;

[0009] A spraying mechanism, a spray port is provided on the cooling box body, the spray port is connected to the spraying mechanism, and the spraying mechanism sprays particles into the drum to remove the burrs on the injection molded products inside the drum.

[0010] According to another specific embodiment of the present invention, it further includes: a controller, which is electrically connected to the rotary drive mechanism, the cooling mechanism, and the spraying mechanism respectively;

[0011] The controller is used to monitor the running time of the rotary drive mechanism. When it is monitored that the running time of the rotary drive mechanism reaches a first preset time, the controller controls the cooling mechanism and the spraying mechanism to stop running, and controls the rotary drive mechanism to continue running until the rotary drive mechanism runs for a second preset time, then controls the rotary drive mechanism to stop running, and issues a material taking prompt message.

[0012] According to another specific embodiment of the present invention, it further includes a temperature sensor, electrically connected to the controller, and the temperature sensor is used to measure the temperature of the cooling box body and upload the obtained temperature value to the controller;

[0013] The controller is further used to monitor the temperature value uploaded by the temperature sensor in real time. Based on the temperature value reaching the lower temperature limit, the controller controls the cooling mechanism to stop delivering the cooling medium into the cooling box body and controls the spraying mechanism to operate to spray particles into the drum. And, based on the temperature value reaching the upper temperature limit, the controller controls the cooling mechanism to deliver the cooling medium into the cooling box body.

[0014] According to another specific embodiment of the present invention, it further includes a dust collection device, which includes a dust collection pipeline and an exhaust fan arranged in the dust collection pipeline. One end of the dust collection pipeline is communicated with the top of the cooling box body, and the other end is communicated to the outside.

[0015] According to another specific embodiment of the present invention, the drum wall is provided with mesh holes, and the aperture of the mesh holes is 2 mm - 4 mm.

[0016] According to another specific embodiment of the present invention, it further includes an impurity recovery device, and the impurity recovery device includes:

[0017] A material receiving port, which is arranged in a funnel shape at the bottom of the cooling box body;

[0018] A vibration screening mechanism, arranged below the material receiving port and communicated with the material receiving port. The vibration screening mechanism is successively provided with a burr recovery port, a particle recovery port, and a dust outlet from top to bottom. A particle recovery box is arranged at the particle recovery port, and the particle recovery box is connected to the spraying mechanism.

[0019] According to another specific embodiment of the present invention, the rotary drive mechanism includes a first drive motor and a first transmission mechanism. The first drive motor is fixed on the outside of the cooling box body, and the first transmission mechanism is respectively connected to the first drive motor and the bottom of the drum. The first drive motor rotates the drum through the first transmission mechanism.

[0020] According to another specific embodiment of the present invention, the first transmission mechanism includes a first straight bevel gear and a second straight bevel gear. The first straight bevel gear and the second straight bevel gear are meshed with each other, and the axis of the first straight bevel gear is perpendicular to the axis of the second straight bevel gear. The first straight bevel gear is connected to the drive end of the first drive motor, and the second straight bevel gear is connected to the bottom of the drum through a fixed bearing.

[0021] According to another specific embodiment of the present invention, it further includes an in-and-out driving mechanism. The in-and-out driving mechanism includes a second driving motor, a second transmission mechanism, and a rotating shaft. The second driving motor is arranged outside the cooling box body. The rotating shaft is connected to the bottom of the drum, and both ends of the rotating shaft are rotatably fixed on the cooling box body. The second transmission mechanism is respectively connected to the second driving motor and the rotating shaft. Wherein, the drum is inclinedly arranged inside the cooling box body, and the extending direction of the rotating shaft is perpendicular to the inclined direction of the drum.

[0022] According to another specific embodiment of the present invention, the cooling medium is liquid nitrogen. The cooling mechanism includes a liquid nitrogen storage device, a liquid nitrogen delivery pipe, and an electromagnetic valve. One end of the liquid nitrogen delivery pipe is communicated with the liquid nitrogen storage device, and the other end is connected to the inside of the cooling box body through an output port. The electromagnetic valve is arranged on the liquid nitrogen delivery pipe and is electrically connected to the controller.

[0023] According to another specific embodiment of the present invention, the spraying mechanism includes a spraying impeller and a spraying motor. The spraying motor drives the spraying impeller to rotate at a high speed.

[0024] The embodiment of the present invention also discloses an injection molding product burr removal method based on the injection molding product burr removal device as described above. The method includes:

[0025] Put the injection molding product after injection molding into the drum inside the cooling box body;

[0026] Control the cooling mechanism to operate to convey the cooling medium into the cooling box body;

[0027] Control the rotation driving mechanism to rotate the drum;

[0028] Real-time detect the temperature of the cooling box body. When the detected temperature reaches the lower temperature limit, control the spraying mechanism to spray particles into the drum to remove the burrs on the injection molding product in the drum, and control the cooling mechanism to stop conveying the cooling medium into the cooling box body; when the detected temperature reaches the upper temperature limit, control the cooling mechanism to convey the cooling medium into the cooling box body;

[0029] When the rotation driving mechanism runs for the first preset time, control the cooling mechanism and the spraying mechanism to stop running, and the rotation driving mechanism continues to run;

[0030] When the rotation driving mechanism runs for the second preset time, control the rotation driving mechanism to stop running, and send a material taking prompt message;

[0031] Take out the injection molding product after burr removal from the drum and put it into a drying device for drying.

[0032] By providing a cooling box body, and arranging a drum, a cooling mechanism, a rotary drive mechanism and a spraying mechanism inside the cooling box body. The drum is used to place the injection-molded products after injection molding. The cooling box body is provided with an output port and a spray port. The output port is communicated with the cooling mechanism. The cooling mechanism conveys a cooling medium into the interior of the cooling box body through the output port. The rotary drive mechanism is connected to the bottom of the drum and is used to drive the drum to rotate. The spray port is communicated with the spraying mechanism. The spraying mechanism sprays particles into the drum through the spray port. By reducing the temperature inside the cooling box body, the burrs on the product surface are catalyzed. At this time, the particles sprayed by the spraying mechanism impact the product surface, so that the burrs on the injection-molded product can be removed. And under the action of the rotary drive mechanism, the drum rotates, so that the burrs can be removed more thoroughly, effectively and evenly. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 Schematic perspective view showing an apparatus for removing burrs from injection-molded products provided by an embodiment of the present invention Figure 1 ;

[0034] Figure 2 Schematic perspective view showing an apparatus for removing burrs from injection-molded products provided by an embodiment of the present invention Figure 2 ;

[0035] Figure 3 Schematic perspective view showing an apparatus for removing burrs from injection-molded products provided by an embodiment of the present invention Figure 3 ;

[0036] Figure 4 Schematic perspective view showing a rotary drive mechanism and an inlet / outlet drive mechanism provided by an embodiment of the present invention;

[0037] Figure 5 Schematic flow chart showing a method for removing burrs from injection-molded products provided by an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0038] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiments, this does not mean that the features of this invention are limited to this implementation manner. On the contrary, the purpose of introducing the invention in conjunction with the implementation manner is to cover other alternatives or modifications that may be extended based on the claims of the present invention. In order to provide a deep understanding of the present invention, many specific details will be included in the following description. The present invention can also be implemented without these details. In addition, in order to avoid confusing or obscuring the key points of the present invention, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0039] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0040] In the description of this embodiment, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the inventive product is customarily placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0041] The terms "first", "second", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0042] In the description of this embodiment, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0043] To make the objectives, technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the drawings.

[0044] As Figures 1 to 3 shown, the embodiment of the present invention provides a burr removing device for injection molded products, including:

[0045] A cooling box body 1;

[0046] A cooling mechanism 2, an output port 21 is provided on the cooling box body 1, the output port 21 is communicated with the cooling mechanism 2, and the cooling mechanism 2 conveys a cooling medium into the cooling box body 1 through the output port 21;

[0047] A roller 3, disposed inside the cooling box body 1, and the roller 3 is used to accommodate injection molded products;

[0048] A rotary drive mechanism 4, connected to the roller 3, for driving the roller 3 to rotate;

[0049] A spraying mechanism 5, a spray port 11 is provided on the cooling box body 1, the spray port 11 is communicated with the spraying mechanism 5, and the spraying mechanism 5 sprays particles into the inside of the roller 3 through the spray port 11 to remove burrs on the injection molded products inside the roller 3.

[0050] With this technical solution, by setting the cooling box body 1, and arranging a drum 3, a cooling mechanism 2, a rotary drive mechanism 4 and a spraying mechanism 5 inside the cooling box body 1, the drum 3 is used to place the injection-molded products after injection molding. The cooling box body 1 is provided with an outlet 21 and a spray nozzle 11. The outlet 21 is communicated with the cooling mechanism 2. The cooling mechanism 2 conveys a cooling medium into the interior of the cooling box body 1 through the outlet 21. The rotary drive mechanism 4 is connected to the bottom of the drum 3 and is used to drive the drum 3 to rotate. The spray nozzle 11 is communicated with the spraying mechanism 5. The spraying mechanism 5 sprays particles into the drum 3 through the spray nozzle 11. By reducing the temperature inside the cooling box body 1 in the present invention, the burrs on the product surface are catalyzed. At this time, the particles sprayed by the spraying mechanism 5 impact the product surface, and the burrs on the injection-molded products can be removed. Moreover, under the action of the rotary drive mechanism 4, the drum 3 rotates, so that the burrs can be removed more thoroughly, effectively and evenly.

[0051] Optionally, in this embodiment, the spray nozzle 11 and the outlet 21 are respectively arranged on the side wall of the cooling box body 1, and the drum 3 is inclinedly arranged inside the cooling box body 1. When the drum 3 is in the working position inside the cooling box body 1, the spray nozzle 11 faces the mouth of the drum 3, so as to facilitate the spraying mechanism 5 to spray particles into the drum 3 through the spray nozzle 11.

[0052] Furthermore, it further includes: a controller, which is electrically connected to the rotary drive mechanism 4, the cooling mechanism 2 and the spraying mechanism 5 respectively;

[0053] The controller is used to monitor the running time of the rotary drive mechanism 4. When it is monitored that the running time of the rotary drive mechanism 4 reaches the first preset time, the controller controls the cooling mechanism 2 and the spraying mechanism 5 to stop running, and controls the rotary drive mechanism 4 to continue running until the rotary drive mechanism 4 runs for the second preset time, then controls the rotary drive mechanism 4 to stop running, and issues a material taking prompt message.

[0054] As Figure 1 and Figure 3 shown, a device body is arranged outside the cooling box body 1, and a control panel 6 is arranged on the device body. The controller is integrated in the control panel 6.

[0055] After the rotary drive mechanism 4 drives the drum 3 to rotate for the first preset time, the controller controls the cooling mechanism 2 to stop refrigerating and controls the spraying mechanism 5 to stop spraying particles. At this time, the rotary drive mechanism 4 continues to drive the drum 3 to rotate until the second preset time. In this embodiment, the first preset time is less than the second preset time. After the cooling mechanism 2 and the spraying mechanism 5 stop running, the rotary drive mechanism 4 continues to run for a period of time to prevent the particles from adhering to the injection-molded products.

[0056] Further, it further includes a temperature sensor, electrically connected to the controller. The temperature sensor is used to measure the temperature of the cooling box body 1 and upload the obtained temperature value to the controller;

[0057] The controller is also used to monitor the temperature value uploaded by the temperature sensor in real time. Based on the temperature value reaching the lower temperature limit, the controller controls the cooling mechanism 2 to stop delivering the cooling medium into the cooling box body 1 and controls the spraying mechanism 5 to operate to spray particles into the inside of the drum 3. And, based on the temperature value reaching the upper temperature limit, the controller controls the cooling mechanism 2 to deliver the cooling medium into the cooling box body 1.

[0058] Specifically, in this embodiment, the temperature sensor is arranged on the cooling box body 1. It should be noted that in order to ensure that the temperature inside the cooling box body 1 is reduced to a low enough level, the temperature sensor detects the temperature of the cooling box body 1. This is because the cooling box body 1 is generally made of stainless steel. If the temperature of the cooling box body 1 reaches the working temperature, the inside thereof can also reach the working temperature.

[0059] Specifically, the controller monitors the temperature of the cooling box body 1 in real time. After the injection molded product is placed into the drum 3, the rotation driving mechanism 4 starts to drive the drum 3 to rotate, and at the same time the cooling mechanism 2 starts to refrigerate, so that the burrs of the injection molded product become brittle. When the cooling mechanism 2 reduces the temperature inside the cooling box body 1 to the lower temperature limit, the spraying mechanism 5 starts to operate to spray particles into the drum 3, and the particles hit the surface of the injection molded product to remove the burrs on the product surface. During this period, if the controller monitors that the temperature of the cooling box body 1 reaches the upper temperature limit, the cooling mechanism 2 starts to operate to reduce the temperature inside the cooling box body 1, ensuring that the burrs on the product surface become brittle, and further ensuring the removal of the burrs on the product surface.

[0060] Optionally, the control panel 6 includes a display screen 61, which is used to display the temperature value detected by the temperature sensor, the running time of the rotation driving mechanism 4, the material taking prompt information, etc.

[0061] Further, as Figure 2 and Figure 3 shown, in this embodiment, the spraying mechanism 5 includes a spraying impeller 51 and a spraying motor 52, and the spraying motor 52 drives the spraying impeller 51 to rotate at a high speed.

[0062] Specifically, the spraying motor 52 is fixed outside the cooling box body 1, and its driving end is connected to the spraying impeller 51, and is used to drive the spraying impeller 51 to rotate at a high speed. A spray port 11 is provided on the cooling box body 1, and the spraying impeller 51 is arranged at the spray port 11. The spraying impeller 51 rotates at a high speed under the drive of the spraying motor 52, so as to drive the particles to continuously spray out from the spray port 11.

[0063] Further, as Figure 1 and Figure 2As shown, in this embodiment, it further includes a dust collection device 7. The dust collection device 7 includes a dust collection pipeline and an exhaust fan arranged in the dust collection pipeline. One end of the dust collection pipeline is communicated with the top of the cooling box body 1, and the other end is communicated to the outside.

[0064] Specifically, in order to suck out the floating dust suspended in the cooling box body 1, an air outlet is provided at the top of the cooling box body 1. The air outlet is connected to one end of the dust collection pipeline, and the other end of the dust collection pipeline is communicated to the outside, so that the dust collection pipeline connects the inside of the cooling box body 1 with the outside. By arranging an exhaust fan in the dust collection pipeline, the exhaust fan extracts the gas in the cooling box body 1, thereby discharging the floating dust in the cooling box body 1 to the outside.

[0065] As Figure 1 and Figure 2 shown, in this embodiment, the dust collection pipeline includes a first dust collection part 71, a second dust collection part 72 and a third dust collection part 73 that are communicated with each other. The floating dust in the cooling box body 1 is discharged to the outside after passing through the first dust collection part 71, the second dust collection part 72 and the third dust collection part 73 under the action of the exhaust fan. Among them, the first dust collection part 71 is arranged at the air outlet of the cooling box body 1. The second dust collection part 72 is cylindrical and vertically arranged on one side of the cooling box body 1, and its two ends are respectively communicated with the first dust collection part 71 and the third dust collection part 73. One end of the third dust collection part 73 is connected to the second dust collection part 72, and the other end is connected to the outside. In a specific embodiment of this embodiment, the exhaust fan is arranged in the third dust collection part 73 and near the outlet. Optionally, an opening is provided at the bottom of the second dust collection part 72, and a dust collection bag is provided below the opening. The dust collection bag is hermetically arranged below the opening to collect the floating dust falling from the inner wall of the second dust collection part 72.

[0066] Furthermore, the barrel wall of the roller 3 is provided with mesh holes so that the removed burrs and particles are screened out from the mesh holes. Optionally, the aperture of the mesh holes is 2mm - 4mm. If the aperture of the mesh holes is too small, the removed burr scraps in the roller 3 are not easy to shake off. If it is too large, there is a risk of knocking and damaging the edges and corners of some products. More preferably, the aperture of the mesh holes is 3mm.

[0067] Furthermore, as Figure 2 and Figure 3 shown, in this embodiment, it further includes an impurity recovery device. The impurity recovery device includes:

[0068] A material receiving port 81, which is arranged in a funnel shape at the bottom of the cooling box body 1;

[0069] A vibration screening mechanism 82, which is arranged below the material receiving port 81 and communicated with the material receiving port 81. The vibration screening mechanism 82 is successively provided with a burr recovery port 83, a particle recovery port 84 and a dust outlet 85 from top to bottom. A particle recovery box 86 is provided at the particle recovery port 84, and the particle recovery box 86 is connected to the spraying mechanism 5.

[0070] Specifically, the particle recovery box 86 is used to collect the particles recovered from the particle recovery port 84. One side of the injection impeller 51 is connected to the cooling box body 1, and the other side is connected to the particle recovery box 86 through a particle pipeline. The injection impeller 51 rotates at a high speed under the drive of the injection motor 52, thereby driving the particles in the particle recovery box 86 to continuously eject from the nozzle 11.

[0071] Specifically, the upper end of the material receiving port 81 is connected to the bottom of the cooling box body 1, and the lower end is connected to the vibration screening mechanism 82, so that the burrs, particles and dust screened out from the mesh holes enter the vibration screening mechanism 82 through the material receiving port 81. The vibration screening mechanism 82 is provided with a burr recovery layer, a particle recovery layer and a dust recovery layer in sequence from top to bottom according to the particle size of the impurities. A vibration motor is provided at the bottom of the dust recovery layer, and the vibration motor is connected to the dust recovery layer through a spring. The burrs, particles and dust are screened out in sequence through the vibration of the vibration motor. The burr recovery layer and the particle recovery layer are respectively provided with a screen mesh protruding upward, and the aperture of the screen mesh provided in the burr recovery layer is larger than the aperture of the screen mesh of the particle recovery layer and smaller than the outer diameter of the burrs, so that the burr recovery layer can leave the burrs in this layer, but screen out the particles and finer dust to the next layer, and the burrs are discharged through the burr recovery port 83. The aperture of the screen mesh provided in the particle recovery layer is smaller than the diameter of the particles, so that the particles can be discharged from the particle recovery port 84 into the particle recovery box 86, and the dust is screened out again and enters the dust recovery layer, and then is discharged from the dust outlet 85 during the vibration of the vibration motor. Optionally, a dust recovery bag can be hermetically connected to the dust outlet 85 to discharge the dust into the dust recovery bag to avoid environmental pollution. By classifying the waste materials through the impurity recovery device, the burrs, particles and dust can be classified and collected, and the particles can be directly discharged into the particle recovery box 86, so that the particles in the particle recovery box 86 can be recycled.

[0072] Optionally, the particles ejected by the ejection mechanism 5 are plastic particles.

[0073] The plastic particles are a soft medium, which can well avoid damage to the surface of the injection molded product, so that the surface roughness of the product will not be affected, and the appearance quality of the product is guaranteed. In a specific embodiment of the present embodiment, the diameter of the plastic particles is 0.5 mm.

[0074] Furthermore, as Figure 4 shown, the rotary drive mechanism 4 includes a first drive motor 41 and a first transmission mechanism. The first drive motor 41 is fixed outside the cooling box body 1, and the first transmission mechanism is respectively connected to the first drive motor 41 and the bottom of the drum 3. The first drive motor 41 rotates the drum 3 through the first transmission mechanism.

[0075] Specifically, the rotation drive mechanism 4 includes a first drive motor 41 and a first transmission mechanism. The first drive motor 41 is fixed to the outside of the cooling box 1, and the first transmission mechanism connects the first drive motor 41 and the drum 3. When the drive end of the first drive motor 41 rotates, the drum 3 is rotated through the first transmission mechanism.

[0076] Furthermore, as Figure 4 shown, in this embodiment, the first transmission mechanism includes a first straight bevel gear 42 and a second straight bevel gear 43. The first straight bevel gear 42 and the second straight bevel gear 43 mesh with each other, and the axis of the first straight bevel gear 42 is perpendicular to the axis of the second straight bevel gear 43. The first straight bevel gear 42 is connected to the drive end of the first drive motor 41, and the second straight bevel gear 43 is connected to the bottom of the drum 3.

[0077] Specifically, the first straight bevel gear 42 is connected to the drive end of the first drive motor 41, and the second straight bevel gear 43 is connected to the bottom of the drum 3 through a connecting shaft. The first straight bevel gear 42 and the second straight bevel gear 43 mesh with each other, and their axes are perpendicular to each other. When the drive end of the first drive motor 41 rotates, the drum 3 is driven to rotate through the first straight bevel gear 42, the second straight bevel gear 43 and the connecting shaft.

[0078] Furthermore, as Figure 4 shown, it further includes an inlet / outlet drive mechanism 9. The inlet / outlet drive mechanism 9 includes a second drive motor 91, a second transmission mechanism and a rotating shaft 92. The second drive motor 91 is arranged on the outside of the cooling box 1. The rotating shaft 92 is connected to the bottom of the drum 3 and the two ends of the rotating shaft 92 are respectively rotatably fixed on the cooling box 1. The second transmission mechanism connects the second drive motor 91 and the rotating shaft 92. Among them, the drum 3 is inclinedly arranged in the cooling box 1, and the extending direction of the rotating shaft 92 is perpendicular to the inclined direction of the drum 3.

[0079] Specifically, in this embodiment, the first drive motor 41 and the second drive motor 91 are arranged side by side on the outer side wall of the cooling box 1. The rotating shaft 92 is arranged inside the cooling box 1 and connected to the bottom of the drum 3. The two end parts of the rotating shaft 92 are respectively rotatably fixed on the cooling box 1 through rotating bearings. In this embodiment, a protective cover 45 is arranged at the middle position of the rotating shaft 92, and the rotating shaft 92 is divided into two sections and fixed on both sides of the protective cover 45 respectively. The drum 3 is arranged on one side of the protective cover 45, and a fixed bearing 44 is arranged inside the protective cover 45. The connecting shaft is rotatably connected to the fixed bearing 44. Specifically, the first straight bevel gear 42 and the second straight bevel gear 43 are arranged inside the protective cover 45, and the second straight bevel gear 43 is rotatably fixed on the fixed bearing 44 through the connecting shaft. In order to facilitate the connection between the drive end of the first drive motor 41 and the first straight bevel gear 42, in this embodiment, the rotating shaft 92 is a hollow rotating shaft, and the drive end of the first drive motor 41 is provided with a second rotating shaft 46, and the second rotating shaft 46 passes through the hollow rotating shaft 92 to be connected to the first straight bevel gear 42.

[0080] In this embodiment, the drum 3 is inclinedly arranged inside the cooling box 1, and the inclination direction of the drum 3 is perpendicular to the extending direction of the rotating shaft 92. The second drive motor 91 rotates the rotating shaft 92 through the second transmission mechanism, thereby driving the protective cover 45 to rotate, and further can change the orientation direction of the mouth of the drum 3. When the in-out drive mechanism 9 rotates the drum 3 outwards, the mouth of the drum 3 faces outwards relative to the cooling box 1, and at this time, it is convenient for the operator to take and place the injection molded product; when the in-out drive mechanism 9 rotates the drum 3 inwards, the mouth of the drum 3 faces inwards relative to the cooling box 1, and at this time, it is convenient to deburr the injection molded product. Adopting this technical solution can not only facilitate the taking and placing of the injection molded product, but also save the space of the cooling box 1.

[0081] Further, as Figure 4 shown, in this embodiment, the second transmission mechanism includes a driving wheel 93, a driven wheel 94 and a transmission chain 95. The driving wheel 93 is connected to the second drive motor 91, and the transmission chain 95 is meshed with both the driving wheel 93 and the driven wheel 94. One end of the rotating shaft 92 is fixedly connected to the driven wheel 94.

[0082] Specifically, the driving wheel 93 is connected to the drive end of the second drive motor 91, the driven wheel 94 is fixedly connected to one end of the rotating shaft 92, and the second rotating shaft 46 passes through the driven wheel 94 and the rotating shaft 92 to be connected to the first straight bevel gear 42. The transmission chain 95 is meshed with the driving wheel 93 and the driven wheel 94, so that when the second drive motor 91 operates, the driven wheel 94 is driven to rotate through the driving wheel 93 and the transmission chain 95, thereby being able to drive the rotating shaft 92 to rotate, and further driving the mouth of the drum 3 to rotate into and out of the cooling box 1.

[0083] Furthermore, the cooling medium is liquid nitrogen. The cooling mechanism 2 includes a liquid nitrogen storage device, a liquid nitrogen delivery pipe, and a solenoid valve. One end of the liquid nitrogen delivery pipe is connected to the liquid nitrogen storage device, and the other end is connected to the inside of the cooling box 1 through the output port 21. The solenoid valve is arranged on the liquid nitrogen delivery pipe and electrically connected to the controller.

[0084] Specifically, the cooling mechanism 2 delivers liquid nitrogen into the cooling box 1 through the output port 21 to lower the temperature inside the cooling box 1 to the lower temperature limit.

[0085] During operation, first, the opening of the drum 3 faces the outside of the cooling box 1 to put the injection-molded product after injection molding into the drum 3. The controller controls the second driving motor 91 to start running, and drives the opening of the drum 3 to rotate towards the inside of the cooling box 1 through the second transmission mechanism. When the drum 3 rotates to the working position, the second driving motor 91 stops running, and the opening of the drum 3 faces the inside of the cooling box 1. Then the controller controls the first driving motor 41 to start running and controls the solenoid valve to open. Thus, the drum 3 starts to rotate through the first transmission mechanism under the action of the first driving motor 41, and the cooling mechanism 2 injects liquid nitrogen into the cooling box 1 through the output port 21 to lower the temperature inside the cooling box 1; at the same time, the exhaust fan of the dust collection device 7 starts running to discharge floating dust, and the vibration motor of the vibration screening mechanism 82 starts running. When the temperature sensor detects that the temperature of the cooling box 1 reaches the lower temperature limit, the solenoid valve closes, and the supply of liquid nitrogen is blocked. At this time, the injection motor 52 starts running, so as to drive the injection impeller 51 to rotate at a high speed to throw the particles in the particle recovery box 86 into the drum 3; among them, the removed burrs are discharged through the burr recovery port 83, the particles are discharged into the particle recovery box 86 through the particle recovery port 84, and the dust is discharged into the dust recovery bag through the dust outlet 85. If the temperature rises to the upper temperature limit, the solenoid valve opens again, and the liquid nitrogen starts to be supplied. When the first driving motor 41 runs for the first preset time, the controller controls the solenoid valve to close and the injection motor 52 to stop running, so as to stop the supply of liquid nitrogen and stop throwing particles; when the first driving motor 41 runs for the second preset time, the controller controls the first driving motor 41 to stop running, and controls the exhaust fan to stop running and the vibration motor to stop running.

[0086] Optionally, the injection-molded product after removing burrs is put into a drying device for drying to remove the water mist on the surface of the product.

[0087] According to the injection-molded product burr removal device provided by the present invention, the burr removal efficiency can be improved, air pollution can be reduced, and the quality of the product after burr removal can be improved.

[0088] As Figure 5As shown, an embodiment of the present invention also provides a method for removing burrs from an injection-molded product, which is carried out based on the above-mentioned burr-removing device for injection-molded products. The method includes the following steps:

[0089] Step S101: Place the injection-molded product after injection molding into the drum 3 in the cooling box 1;

[0090] Step S102: Control the cooling mechanism 2 to operate to convey the cooling medium into the cooling box 1;

[0091] Step S103: Control the rotation drive mechanism 4 to rotate the drum 3;

[0092] Step S104: Detect the temperature of the cooling box 1 in real time. When the detected temperature reaches the lower temperature limit, control the spraying mechanism 5 to spray particles into the drum 3 to remove the burrs on the injection-molded product in the drum 3, and control the cooling mechanism 2 to stop conveying the cooling medium into the cooling box 1; when the detected temperature reaches the upper temperature limit, control the cooling mechanism 2 to convey the cooling medium into the cooling box 1;

[0093] Step S105: When the rotation drive mechanism 4 runs for the first preset time, control the cooling mechanism 2 and the spraying mechanism 5 to stop running, and the rotation drive mechanism 4 continues to run;

[0094] Step S106: When the rotation drive mechanism 4 runs for the second preset time, control the rotation drive mechanism 4 to stop running and send a material-taking prompt message;

[0095] Step S107: Take out the injection-molded product after burr removal from the drum 3 and place it in a drying device for drying.

[0096] Furthermore, it also includes collecting dust and recovering impurities during the operation of the rotation drive mechanism 4.

[0097] Although the present invention has been illustrated and described by referring to some preferred embodiments of the present invention, those of ordinary skill in the art should understand that the above content is a further detailed description of the present invention in combination with specific embodiments, and it cannot be determined that the specific implementation of the present invention is only limited to these descriptions. Those skilled in the art can make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A burr removal device for injection molded products, characterized in that, Comprising: Cooling box body; Cooling mechanism, an output port is provided on the cooling box body, the output port is communicated with the cooling mechanism, and the cooling mechanism conveys a cooling medium into the cooling box body through the output port; Drum, arranged inside the cooling box body, and the drum is used for accommodating the injection molded product; Rotary drive mechanism, connected to the drum and used for driving the drum to rotate; Spraying mechanism, a spray port is provided on the cooling box body, the spray port is communicated with the spraying mechanism, and the spraying mechanism sprays particles into the drum through the spray port to remove burrs on the injection molded product in the drum.

2. The burr removal device for injection molded products according to claim 1, characterized in that, Further comprising: Controller, electrically connected to the rotary drive mechanism, the cooling mechanism and the spraying mechanism respectively; The controller is used for monitoring the running time of the rotary drive mechanism. When it is monitored that the running time of the rotary drive mechanism reaches a first preset time, the controller controls the cooling mechanism and the spraying mechanism to stop running, and controls the rotary drive mechanism to continue running until the rotary drive mechanism runs for a second preset time, then controls the rotary drive mechanism to stop running, and issues a material taking prompt message.

3. The burr removal device for injection molded products according to claim 2, characterized in that, Further comprising a temperature sensor, electrically connected to the controller, and the temperature sensor is used for measuring the temperature of the cooling box body and uploading the obtained temperature value to the controller; The controller is further used for monitoring the temperature value uploaded by the temperature sensor in real time. Based on the temperature value reaching the temperature lower limit, the controller controls the cooling mechanism to stop conveying the cooling medium into the cooling box body and controls the spraying mechanism to run to spray the particles into the drum. And, based on the temperature value reaching the temperature upper limit, the controller controls the cooling mechanism to convey the cooling medium into the cooling box body.

4. The deburring device for injection molded products according to claim 1, characterized in that, Further comprising a dust collection device, the dust collection device includes a dust collection pipe and an exhaust fan arranged inside the dust collection pipe, one end of the dust collection pipe is communicated with the top of the cooling box body, and the other end is communicated to the outside.

5. The burr removal device for injection molded products according to claim 1, characterized in that, The drum wall is provided with mesh holes, and the aperture of the mesh holes is 2mm - 4mm.

6. The burr removal device for injection molded products according to claim 5, wherein, Further comprising an impurity recovery device, the impurity recovery device includes: Material receiving port, the material receiving port is arranged in a funnel shape at the bottom of the cooling box body; Vibrating screening mechanism, arranged below the material receiving port and communicated with the material receiving port, the vibrating screening mechanism is successively provided with a burr recovery port, a particle recovery port and a dust outlet from top to bottom, a particle recovery box is arranged at the particle recovery port, and the particle recovery box is connected to the spraying mechanism.

7. The deburring device for injection molded products according to claim 1, wherein, The rotary drive mechanism includes a first drive motor and a first transmission mechanism, the first drive motor is fixed outside the cooling box body, the first transmission mechanism is respectively connected to the first drive motor and the bottom of the drum, and the first drive motor rotates the drum through the first transmission mechanism.

8. The deburring device for injection molded products according to claim 7, wherein, The first transmission mechanism includes a first straight bevel gear and a second straight bevel gear. The first straight bevel gear and the second straight bevel gear mesh with each other, and the axis of the first straight bevel gear is perpendicular to the axis of the second straight bevel gear. The first straight bevel gear is connected to the driving end of the first driving motor, and the second straight bevel gear is connected to the bottom of the drum through a fixed bearing.

9. The burr removal device for injection molded products according to claim 1, characterized in that, It further includes an inlet / outlet driving mechanism. The inlet / outlet driving mechanism includes a second driving motor, a second transmission mechanism and a rotating shaft. The second driving motor is arranged outside the cooling box body. The rotating shaft is connected to the bottom of the drum and both ends of the rotating shaft are rotatably fixed on the cooling box body respectively. The second transmission mechanism is respectively connected to the second driving motor and the rotating shaft. Wherein, the drum is inclinedly arranged in the cooling box body, and the extending direction of the rotating shaft is perpendicular to the inclined direction of the drum.

10. The burr removal device for injection molded products according to claim 2, characterized in that, The cooling medium is liquid nitrogen. The cooling mechanism includes a liquid nitrogen storage device, a liquid nitrogen delivery pipe and a solenoid valve. One end of the liquid nitrogen delivery pipe is communicated with the liquid nitrogen storage device, and the other end is communicated with the inside of the cooling box body through the output port. The solenoid valve is arranged on the liquid nitrogen delivery pipe and is electrically connected to the controller.

11. The burr removing device for injection molded products according to claim 1, wherein The spraying mechanism includes a spraying impeller and a spraying motor. The spraying motor drives the spraying impeller to rotate at a high speed.

12. A method for removing burrs from an injection-molded product, characterized in that, Based on the injection molding product burr removal device according to any one of claims 1 to 11, the method includes: Put the injection molding product after injection molding into the drum in the cooling box body; Control the cooling mechanism to operate to convey the cooling medium into the cooling box body; Control the rotation driving mechanism to rotate the drum; Detect the temperature of the cooling box body in real time. When the detected temperature reaches the lower temperature limit, control the spraying mechanism to spray particles into the drum to remove the burrs on the injection molding product in the drum, and control the cooling mechanism to stop conveying the cooling medium into the cooling box body; when the detected temperature reaches the upper temperature limit, control the cooling mechanism to convey the cooling medium into the cooling box body; When the rotation driving mechanism runs for a first preset time, control the cooling mechanism and the spraying mechanism to stop running, and the rotation driving mechanism continues to run; When the rotation driving mechanism runs for a second preset time, control the rotation driving mechanism to stop running and send a material taking prompt message; Take out the injection molding product after burr removal from the drum and put it into a drying device for drying.

Images