Blanking device of injection molding machine

Abstract

The utility model provides a blanking device of an injection molding machine, which comprises a mechanical arm arranged on the outer side of a forming mold of the injection molding machine, a base and a plurality of vibrating pieces, the base is connected to the swing end of the mechanical arm, and a plurality of suction cups and air exhaust assemblies connected with the suction cups are arranged on the side, back on to the mechanical arm, of the base side by side. A plurality of mounting holes are further formed in the base; the multiple vibration pieces are inserted into the mounting holes in a one-to-one correspondence mode, and each vibration piece is used for generating vibration stress and is further in transmission connection with a driving mechanism; when the suction cup sucks the product, the vibration piece can move back to the groove bottom of the mounting hole to be connected with the product so as to transmit vibration stress to the product, and the product vibrates and is separated from the forming mold. According to the discharging device of the injection molding machine, the product can be separated from the forming mold in a vibration mode firstly, then the product is taken down from the forming mold through the mechanical arm, the product is prevented from being damaged when taken out, and the injection molding quality of the product is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of blanking equipment for injection molding machines, and more specifically relates to a blanking device for injection molding machines. Background Art

[0002] Injection molding machine is also known as injection molding machine or injection machine; in actual use, the injection molding machine can heat thermoplastic plastics, and then apply high pressure to the molten plastic to make it shoot toward and fill the molding mold, thereby making plastic products of various shapes.

[0003] At present, after the injection molding is completed, the injection molding machine usually performs the unloading work with the cooperation of a robotic arm; specifically, the existing robotic arm uses a suction cup to adsorb the product and removes the mold through the horizontal and vertical movement of the robotic arm.

[0004] The inventors discovered that due to a certain degree of adhesion between the newly formed product and the mold, the product is easily damaged when driven by the robotic arm, resulting in defects such as low product forming rate and poor product quality. Utility Model Content

[0005] The purpose of the present application is to provide an injection molding machine unloading device to solve the technical problem in the prior art that a robotic arm is likely to damage a product when directly removing the product from a molding mold.

[0006] To achieve the above-mentioned purpose, the technical solution adopted in this application is: to provide an injection molding machine unloading device, including a robotic arm for being arranged outside the molding mold of the injection molding machine and for being connected to the product; it also includes:

[0007] A base connected to the swing end of the robotic arm; a plurality of suction cups and an air extraction assembly connected to each of the suction cups are arranged in parallel on the side of the base facing away from the robotic arm; and a plurality of mounting holes arranged around the suction cups are also opened on the base; and

[0008] A plurality of vibrating members are plugged into the plurality of mounting holes in a one-to-one correspondence; each of the vibrating members is used to generate vibration stress and is also connected to a driving mechanism;

[0009] Wherein, the driving mechanism can drive the vibrating member to move along the axial direction of the mounting hole;

[0010] When the suction cup absorbs the product, the vibrating member can move away from the groove bottom of the mounting hole and contact the product, so as to transmit the vibration stress to the product, vibrate the product and separate it from the forming mold.

[0011] Preferably, the vibrating member includes:

[0012] a docking seat, slidably inserted into the corresponding mounting hole and drivingly connected to the corresponding driving mechanism; and

[0013] A plurality of cyclone vibrators are arranged in parallel on a side of the docking seat facing the robotic arm;

[0014] Wherein, an air supply mechanism is connected to the docking seat; the air supply mechanism is connected to each of the cyclone vibrators, and is used to provide compressed air to the cyclone vibrators, so that the cyclone vibrators generate the vibration stress and transmit the vibration stress to the docking seat.

[0015] Preferably, the air supply mechanism includes:

[0016] an air storage pump, fixedly disposed on the base, for generating and containing the compressed air, and having an output terminal for discharging the compressed air; and

[0017] A plurality of branch pipes are connected to the plurality of cyclone vibrators in a one-to-one correspondence, and an air delivery pipe is provided between the branch pipe and the air storage pump; one end of the air delivery pipe is connected to the output terminal, and the other end is connected to the plurality of branch pipes.

[0018] Preferably, a first solenoid valve is provided on the gas delivery pipe.

[0019] Preferably, a plurality of rubber vibration strips are provided on the side of the docking seat facing away from the robotic arm.

[0020] Preferably, the driving mechanism includes:

[0021] a first connecting rod hinged on a side of the base facing the robotic arm, with a hinge axis located in the middle of the first connecting rod to form two swing ends located at both ends of the first connecting rod; one of the swing ends of the first connecting rod is connected to the vibrating member via a second connecting rod; and

[0022] a linear cylinder, fixedly mounted on the base, with a power output end hinged to the other swing end of the first connecting rod;

[0023] The linear cylinder can drive the first connecting rod to swing, so as to drive the vibrating member to move along the axial direction of the mounting hole through the second connecting rod.

[0024] Preferably, the air extraction component includes:

[0025] An air collecting box, which has a hollow interior and is disposed on a side of the base facing the robotic arm; the air collecting box has a plurality of connecting pipes communicating with the interior thereof, and the plurality of connecting pipes are connected to the plurality of suction cups in a one-to-one correspondence; and

[0026] An air extraction pump is provided on the air collecting box, and an air extraction end thereof is communicated with the interior of the air collecting box;

[0027] Wherein, when the suction cup contacts the product, the air pump is suitable for discharging the air inside the air collecting box to form a negative pressure environment, so that the product is adsorbed on the suction cup.

[0028] Preferably, a second solenoid valve is further provided on the air collecting box.

[0029] Preferably, the side of the base facing the robotic arm has a mounting base detachably connected to the robotic arm.

[0030] In an embodiment of the present application, when using the unloading device of the injection molding machine, the robotic arm drives the base to move toward the molding mold of the injection molding machine, and then turns on the vacuum assembly to allow the suction cup to adsorb the product to be taken out. Then, the driving mechanism drives the corresponding vibrating member close to the product until it abuts against the product. Then, the vibrating member is started, and each vibrating member can drive the product to vibrate, thereby slowly separating the product from the molding mold of the injection molding machine. When the product is out of the molding mold, the robotic arm drives the base away from the injection molding machine, thereby taking the product out.

[0031] Compared with the prior art, the injection molding machine unloading device provided in the embodiment of the present application first separates the part of the product in contact with the molding mold by vibration when removing the product from the molding mold, and then removes the product from the mold, thereby preventing the product from sticking to the molding mold, avoiding damage to the product when taking it out, ensuring product quality, and reducing economic losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0033] Figure 1 Schematic diagram of the three-dimensional structure of the injection molding machine blanking device provided in the embodiment of the present application Figure 1 ;

[0034] Figure 2 Schematic diagram of the three-dimensional structure of the injection molding machine blanking device provided in the embodiment of the present application Figure 2 ;

[0035] Figure 3 Schematic diagram of the three-dimensional structure of the injection molding machine blanking device provided in the embodiment of the present application Figure 3 ;

[0036] Figure 4A schematic front view of the structure of the injection molding machine blanking device provided in an embodiment of the present application;

[0037] Figure 5 A schematic diagram of the back structure of the injection molding machine blanking device provided in an embodiment of the present application;

[0038] Figure 6 A side structural diagram of a blanking device for an injection molding machine provided in an embodiment of the present application;

[0039] Figure 7 For the Figure 6 Schematic diagram of the cross-sectional structure along line AA;

[0040] Among them, the reference numerals in the figures are:

[0041] 1. Base; 11. Mounting hole; 12. Suction cup; 13. Mounting seat; 2. Vibrating member; 21. Docking seat; 211. Rubber vibration strip; 22. Cyclone vibrator; 3. Driving mechanism; 31. First connecting rod; 32. Linear cylinder; 33. Second connecting rod; 4. Vacuum assembly; 41. Air collecting box; 411. Second solenoid valve member; 42. Air pump; 43. Connecting pipe; 5. Air supply mechanism; 51. Air storage pump; 52. Branch pipe; 53. Air supply pipe; 531. First solenoid valve member; 6. Robotic arm. DETAILED DESCRIPTION

[0042] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0043] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0044] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0046] Please also refer to Figures 1 to 7 The present invention provides an injection molding machine blanking device, which includes a mechanical arm 6 disposed outside a molding die of the injection molding machine and connected to a product; a base 1 and a plurality of vibrating members 2.

[0047] The base 1 is connected to the swing end of the robotic arm 6; a plurality of suction cups 12 are arranged side by side on the side of the base 1 facing away from the robotic arm 6, and an exhaust component 4 connected to each suction cup 12; the suction cup 12 adopts a double-layer structure, with a larger adsorption area and suction force adjustment range; and a plurality of mounting holes 11 arranged around the suction cup 12 are also opened on the base 1; the axial direction of each mounting hole 11 is perpendicular to the surface of the base 1, and each mounting hole 11 is provided with a guide rail arranged parallel to the mounting hole 11.

[0048] Multiple vibrators 2 are plugged into multiple mounting holes 11 one by one, and the plugging direction of each vibrator 2 is consistent with the axial direction of the corresponding mounting hole 11; each vibrator 2 is used to generate vibration stress and is also connected to a driving mechanism 3; the vibrator 2 can use a pneumatic vibrator or an electric vibrator.

[0049] The driving mechanism 3 can drive the vibrating member 2 to move along the axial direction of the mounting hole 11 , so that the plurality of vibrating members 2 move toward or away from the bottom of the mounting hole 11 .

[0050] When the suction cup 12 absorbs the product, the vibrating member 2 can move away from the bottom of the mounting hole 11 and contact the product, so as to transmit vibration stress to the product, vibrate the product and separate it from the molding die.

[0051] In an embodiment of the present application, when using the unloading device of the injection molding machine, the robotic arm 6 drives the base 1 to move toward the molding mold of the injection molding machine, and then turns on the vacuum assembly 4 to allow the suction cup 12 to adsorb the product to be taken out. Then, the driving mechanism 3 drives the corresponding vibrating member 2 close to the product until it abuts against the product. Then, the vibrating member 2 is started, and each vibrating member 2 can drive the product to vibrate, thereby slowly separating the product and the molding mold of the injection molding machine. When the product is out of the molding mold, the robotic arm 6 drives the base 1 away from the injection molding machine, thereby taking the product out.

[0052] Compared with the prior art, the injection molding machine unloading device provided in the embodiment of the present application first separates the part of the product in contact with the molding mold by vibration when removing the product from the molding mold, and then removes the product from the mold, thereby preventing the product from sticking to the molding mold, avoiding damage to the product when taking it out, ensuring product quality, and reducing economic losses.

[0053] In some embodiments, please refer to Figures 1 to 7 As a specific embodiment of the injection molding machine blanking device provided in this application, the vibrating member 2 includes a docking seat 21 and a plurality of cyclone vibrators 22.

[0054] The docking seat 21 is slidably inserted into the corresponding mounting hole 11 and is transmission-connected to the corresponding driving mechanism 3 ; moreover, the insertion direction of the docking seat 21 is consistent with the axial direction of the mounting hole 11 .

[0055] Several cyclone vibrators 22 are arranged in parallel on the side of the docking seat 21 facing the robotic arm 6. Each cyclone vibrator 22 is detachably connected to the docking seat 21 through a fixing bolt. When the cyclone vibrator 22 is installed, its air inlet is set toward the robotic arm 6. The specific number of cyclone vibrators 22 can be adjusted according to the size of the vibration force required for product demolding.

[0056] When the cyclone vibrator 22 is used, it needs to be connected to the air supply mechanism 5, which is set on the docking seat 21; the air supply mechanism 5 is connected to each cyclone vibrator 22, and is used to provide compressed air to the cyclone vibrator 22, so that the cyclone vibrator 22 generates vibration stress and transmits the vibration stress to the docking seat 21.

[0057] It should be noted that pneumatic vibrators use compressed air as a power source to make the balls run at high speed in a predetermined track, thereby generating a certain frequency and centrifugal force to vibrate. Pneumatic rotary vibrators only use compressed air as a power source, with low gas consumption, making them both safe and energy-saving.

[0058] By adopting the above technical solution, the vibrating member 2 can use compressed air to generate vibration stress, which is both safe and energy-saving.

[0059] In some embodiments, please refer to Figure 3 、 Figures 5 to 7 As a specific embodiment of the injection molding machine unloading device provided in this application, the air supply mechanism 5 includes an air storage pump 51 and multiple branch pipes 52.

[0060] The air storage pump 51 is fixedly arranged on the base 1, and is used to generate and contain compressed air, and has an output end for discharging compressed air to the outside; the air storage pump 51 adopts a small air pump, and the amount of air it contains can meet the amount of air required for a group of cyclone vibrators 22 to complete one unloading operation; when the unloading device is not performing unloading action and is in standby state, the air storage pump 51 is turned on until the compressed air is full; when the unloading device needs to perform unloading work, the air storage pump 51 stops storing air and outputs compressed air at the same time for multiple cyclone vibrators 22 to vibrate.

[0061] The multiple branch pipes 52 are connected to the multiple cyclone vibrators 22 in a one-to-one correspondence, and an air delivery pipe 53 is provided between the branch pipe 52 and the air storage pump 51 ; one end of the air delivery pipe 53 is connected to the output terminal, and the other end is connected to the multiple branch pipes 52 .

[0062] In some embodiments, see Figure 2 、 Figure 3 、 Figures 5 to 7 As a specific embodiment of the injection molding machine unloading device provided in this application, a first solenoid valve component 531 is provided on the air delivery pipe 53.

[0063] The first solenoid valve 531 is a flow regulating valve, and the opening of the valve can be controlled by a program to control the flow of compressed air in the air pipe 53 and further control the vibration force generated by the cyclone vibrator 22 .

[0064] In some embodiments, please refer to Figure 1 、 Figure 2 and Figure 4 As a specific embodiment of the injection molding machine unloading device provided in the present application, a plurality of rubber vibration strips 211 are provided on the side of the docking seat 21 facing away from the robotic arm 6. The rubber vibration strips 211 are made of a relatively soft material, and the rubber vibration strips 211 have a plurality of protrusions for abutting against the product; the protrusions enable the rubber vibration strips 211 to adapt to products with irregular shapes, and the relatively soft rubber material enables the rubber vibration strips 211 to be slightly deformed when in contact with the product, so that the rubber vibration strips 211 and the product have a larger contact area, thereby better transmitting vibration stress.

[0065] In some embodiments, please refer to Figure 3 、 Figure 5 and Figure 6 As a specific embodiment of the injection molding machine blanking device provided in this application, the driving mechanism 3 includes a first connecting rod 31 and a linear cylinder 32.

[0066] The first connecting rod 31 is hinged on the side of the base 1 facing the robotic arm 6, and the hinge axis is located in the middle of the first connecting rod 31. Both ends of the first connecting rod 31 are freely movable swinging ends; one of the swinging ends of the first connecting rod 31 is connected to the vibrating member 2 through a second connecting rod 33; specifically, the swinging end of the first connecting rod 31 close to the outside of the base 1 is hinged to one end of the second connecting rod 33, and the other end of the second connecting rod 33 is hinged to the vibrating member 2; according to the size of the vibrating member 2, the number of the first connecting rod 31 and the second connecting rod 33 can be two, which can be respectively arranged on both sides of the linear cylinder 32.

[0067] The linear cylinder 32 is fixedly mounted on the base 1 , and its power output end is hinged to the other swinging end of the first connecting rod 31 . The linear cylinder 32 can drive the first connecting rod 31 to swing, thereby driving the vibrating member 2 to move axially along the mounting hole 11 through the second connecting rod 33 .

[0068] By adopting the above technical solution, the linear motion of the linear cylinder 32 can be converted into the swing of the first connecting rod 31, and the swing of the first connecting rod 31 can be converted into the linear motion of the second connecting rod 33, thereby driving the vibrating member 2 to perform linear motion along the axial direction of the mounting hole 11; the cylinder and connecting rod mechanism has a simple structure and is not prone to failure, which reduces the volume of the unloading device and improves the reliability of the unloading device.

[0069] In some embodiments, please refer to Figure 6 and Figure 7 As a specific embodiment of the injection molding machine unloading device provided in this application, the air extraction component 4 includes an air collecting box 41 and an air extraction pump 42.

[0070] The air collecting box 41 has a hollow internal structure and is arranged on the side of the base 1 facing the robotic arm 6; the air collecting box 41 has a plurality of connecting pipes 43 connected to the interior thereof, and the plurality of connecting pipes 43 are connected to the plurality of suction cups 12 in a one-to-one correspondence.

[0071] The air extraction pump 42 is disposed on the air collecting box 41 , and an air extraction end thereof is communicated with the interior of the air collecting box 41 .

[0072] During specific use, the robotic arm 6 first drives the suction cup 12 to contact the product, and then the air pump 42 is suitable for discharging the air inside the air collecting box 41 to form a negative pressure environment, so that the product is adsorbed on the suction cup 12.

[0073] By adopting the above technical solution, the adsorption of multiple suction cups 12 can be achieved using one air pump 42, which saves costs.

[0074] In some embodiments, please refer to Figure 6 and Figure 7 As a specific embodiment of the injection molding machine unloading device provided in this application, a second solenoid valve component 411 is also provided on the air collecting box 41.

[0075] The second solenoid valve component 411 is program-controlled to switch the connection state between the air collecting box 41 and the external environment; when it is necessary to release the product adsorbed on the multiple suction cups 12, the vacuum pump 42 is first closed through the program, and the second solenoid valve component 411 is opened through program control. The interior of the air collecting box 41 is connected to the external environment, and the external air enters the interior of the air collecting box 41, so that the air pressure inside the air collecting box 41 is the same as the external air pressure, so that the multiple suction cups 12 lose their adsorption effect to release the product.

[0076] In some embodiments, please refer to Figure 1 、 Figure 3 and Figure 5 As a specific embodiment of the injection molding machine unloading device provided in this application, the base 1 has a mounting seat 13 that is detachably connected to the robotic arm 6 on the side facing the robotic arm 6; the mounting seat 13 can be detachably connected to the connecting flange of the robotic arm 6 in the form of multiple bolt pairs, which provides convenience for the subsequent maintenance and replacement of the unloading device.

[0077] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. An injection molding machine unloading device, comprising a mechanical arm for being arranged outside the molding die of the injection molding machine and for being connected to the product; characterized in that: Also includes: A base connected to the swing end of the robotic arm; a plurality of suction cups and an air extraction assembly connected to each of the suction cups are arranged in parallel on the side of the base facing away from the robotic arm; and a plurality of mounting holes arranged around the suction cups are also opened on the base; and A plurality of vibrating members are plugged into the plurality of mounting holes in a one-to-one correspondence; each of the vibrating members is used to generate vibration stress and is also connected to a driving mechanism; Wherein, the driving mechanism can drive the vibrating member to move along the axial direction of the mounting hole; When the suction cup absorbs the product, the vibrating member can move away from the groove bottom of the mounting hole and contact the product, so as to transmit the vibration stress to the product, vibrate the product and separate it from the forming mold.

2. The blanking device for an injection molding machine according to claim 1, wherein: The vibrating element comprises: a docking seat, slidably inserted into the corresponding mounting hole and drivingly connected to the corresponding driving mechanism; and A plurality of cyclone vibrators are arranged in parallel on a side of the docking seat facing the robotic arm; Wherein, an air supply mechanism is connected to the docking seat; the air supply mechanism is connected to each of the cyclone vibrators, and is used to provide compressed air to the cyclone vibrators, so that the cyclone vibrators generate the vibration stress and transmit the vibration stress to the docking seat.

3. The injection molding machine blanking device according to claim 2, characterized in that: The air supply mechanism comprises: an air storage pump, fixedly disposed on the base, for generating and containing the compressed air, and having an output terminal for discharging the compressed air; and A plurality of branch pipes are connected to the plurality of cyclone vibrators in a one-to-one correspondence, and an air delivery pipe is provided between the branch pipe and the air storage pump; one end of the air delivery pipe is connected to the output terminal, and the other end is connected to the plurality of branch pipes.

4. The blanking device for an injection molding machine according to claim 3, wherein: The gas delivery pipe is provided with a first electromagnetic valve component.

5. The blanking device for an injection molding machine according to claim 2, wherein: A plurality of rubber vibration strips are provided on the side of the docking seat facing away from the mechanical arm.

6. The blanking device for an injection molding machine according to claim 1, wherein: The driving mechanism comprises: a first connecting rod hinged on a side of the base facing the robotic arm, with a hinge axis located in the middle of the first connecting rod to form two swing ends located at both ends of the first connecting rod; one of the swing ends of the first connecting rod is connected to the vibrating member via a second connecting rod; and a linear cylinder, fixedly mounted on the base, with a power output end hinged to the other swing end of the first connecting rod; The linear cylinder can drive the first connecting rod to swing, so as to drive the vibrating member to move along the axial direction of the mounting hole through the second connecting rod.

7. The blanking device for an injection molding machine according to claim 1, wherein: The air extraction component comprises: An air collecting box, which has a hollow interior and is disposed on a side of the base facing the robotic arm; the air collecting box has a plurality of connecting pipes communicating with the interior thereof, and the plurality of connecting pipes are connected to the plurality of suction cups in a one-to-one correspondence; and An air extraction pump is provided on the air collecting box, and an air extraction end thereof is communicated with the interior of the air collecting box; Wherein, when the suction cup contacts the product, the air pump is suitable for discharging the air inside the air collecting box to form a negative pressure environment, so that the product is adsorbed on the suction cup.

8. The blanking device for an injection molding machine according to claim 7, wherein: The air collecting box is also provided with a second electromagnetic valve component.

9. The blanking device for an injection molding machine according to any one of claims 1 to 8, characterized in that: The side of the base facing the robotic arm is provided with a mounting base detachably connected to the robotic arm.

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