A valve plate function test platform of an injection molding machine

Abstract

The application provides an injection molding machine valve plate function test platform, which comprises a receiving cabinet, a clamping device, a test mechanism and a control mechanism. In the working process of the injection molding machine valve plate function test platform, the clamping device clamps and fixes the valve plate to be tested. The hydraulic pump transmits the oil in the oil tank to the input end of the valve plate to be tested through the oil delivery pipe. The safety pressure valve block can control the oil pressure in the oil delivery pipe to avoid safety hazards caused by excessive oil pressure. After the oil passes through the valve plate to be tested, it flows back to the oil tank through the return pipe. The pressure gauge is used to monitor the oil pressure in the return pipe in real time and transmit the oil pressure information to the control mechanism. The control mechanism determines whether the sealing performance of the valve plate to be tested is qualified according to the working pressure of the hydraulic pump and the oil pressure information of the pressure gauge. The injection molding machine valve plate function test platform has high test efficiency, high precision and low error for the valve plate to be tested.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of injection molding machine valve plate testing, in particular to an injection molding machine valve plate function test platform. BACKGROUND

[0002] Injection molding machine, also known as injection molding machine or injection machine, is the main molding equipment for making various shaped plastic products by using thermoplastic or thermosetting plastics. Injection molding machine is divided into vertical injection molding machine, horizontal injection molding machine and full electric injection molding machine. Injection molding machine can heat plastic and apply high pressure to molten plastic to fill the mold cavity. The working principle of injection molding machine is similar to that of syringe for injection. It is by the pushing force of the screw that the molten plastic in the molten state is injected into the closed mold cavity, and the product is obtained after solidification and setting. Injection molding is a cyclic process, each cycle mainly includes: quantitative feeding-melting plasticization-pressurizing injection-mold filling-cooling-opening mold taking out. After taking out the plastic parts, the mold is closed again for the next cycle.

[0003] However, the neutron valve plate applied on the injection molding machine needs to be tested during production. The traditional testing method is to manually connect the valve plate with the valve to test the air tightness. The manual testing procedure is complicated, the shrinkage rate is low, and the error is large. SUMMARY

[0004] Therefore, it is necessary to provide an injection molding machine valve plate function test platform to solve the technical problems of complicated manual testing procedure, low shrinkage rate and large error.

[0005] An injection molding machine valve plate function test platform, comprising: a receiving cabinet, a clamping device, a testing mechanism and a control mechanism;

[0006] The clamping device is arranged on the receiving cabinet for clamping and fixing the valve plate to be tested;

[0007] The testing mechanism comprises an oil tank, a hydraulic pump, an oil delivery pipe, a safety pressure valve block, a return pipe and a pressure gauge; the oil tank is arranged in the receiving cabinet, the input end of the hydraulic pump is communicated with the oil tank, and the output end of the hydraulic pump is communicated with the input end of the oil delivery pipe; the output end of the oil delivery pipe is communicated with the input end of the valve plate to be tested; the safety pressure valve block is arranged on the oil delivery pipe; the input end of the return pipe is communicated with the output end of the valve plate to be tested; the pressure gauge is arranged on the return pipe, and the output end of the return pipe is communicated with the input end of the oil tank;

[0008] The hydraulic pump and the pressure gauge are electrically connected with the control mechanism.

[0009] In one of the embodiments, the testing mechanism further comprises a cooling machine, which is connected with the receiving cabinet, and the return pipe is communicated with the input end of the oil tank through the cooling machine.

[0010] In one of the embodiments, the testing mechanism further comprises an oil pressure action detection assembly, which comprises a receiving frame, an action oil cylinder, a detection connecting plate and a proximity sensor; the action oil cylinder is arranged on the return pipe and communicated with the return pipe, and the action oil cylinder is connected with the receiving cabinet through the receiving frame; the proximity sensor is connected with the receiving frame through the detection connecting plate; the proximity sensor can detect the driving column in the extended state in the action oil cylinder; and the proximity sensor is electrically connected with the control mechanism.

[0011] In one of the embodiments, the testing mechanism further comprises a filter, which is arranged on the return pipe.

[0012] In one of the embodiments, an oil injection nozzle is arranged on the oil tank.

[0013] In one of the embodiments, a cleaning valve is arranged on the oil tank.

[0014] In one of the embodiments, a plurality of lifting lugs are arranged around the receiving cabinet.

[0015] In one of the embodiments, a plurality of supporting feet are arranged at the bottom of the receiving cabinet.

[0016] In one of the embodiments, a plurality of rotating wheels are arranged at the bottom of the receiving cabinet.

[0017] In one of the embodiments, the rotating wheels are universal wheels.

[0018] In the working process of the above-mentioned injection molding machine valve plate function test platform, the clamping device clamps and fixes the valve plate to be tested. The hydraulic pump transmits the oil in the oil tank to the input end of the valve plate to be tested through the oil delivery pipe. The safety pressure valve block can control the oil pressure in the oil delivery pipe to avoid safety hazards caused by excessive oil pressure. After the oil passes through the valve plate to be tested, it flows back to the oil tank through the return pipe. The pressure gauge is used to monitor the oil pressure in the return pipe in real time and transmit the oil pressure information to the control mechanism. The control mechanism determines whether the sealing performance of the valve plate to be tested is qualified according to the working pressure of the hydraulic pump and the oil pressure information of the pressure gauge. The above-mentioned injection molding machine valve plate function test platform has high testing efficiency, high precision and low error for the valve plate to be tested. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic view of the injection molding machine valve plate function test platform in one of the embodiments.

[0020] Figure 2 Fig. 2 is a schematic view of a structure of a clamping device in an embodiment;

[0021] Figure 3 Fig. 3 is a schematic view of a partial structure of a clamping device in an embodiment;

[0022] Figure 4 Fig. 4 is a schematic view of a structure of a clamping device in an embodiment; Figure 3 Fig. 5 is a schematic view of a structure of a clamping device in an embodiment;

[0023] Figure 5 Fig. 6 is a schematic view of a structure of a clamping device in an embodiment; Figure 4 Fig. 7 is a schematic view of a structure of a clamping device in an embodiment. DETAILED DESCRIPTION

[0024] In order to make the above objectives, features and advantages of the present application more clear and comprehensible, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application can be practiced without some or all of these specific details, and that the present application is not limited to the specific embodiments disclosed below. In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are merely used for convenience of description of the present application and simplification of description, and thus cannot be construed as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus cannot be construed as limiting the present application.

[0025] In addition, the terms "first", "second", etc. are used only for the purpose of description, and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Thus, the features defined with "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0026] In the present application, unless specifically defined otherwise, the terms "mount", "connected", "connecting", "fixed", and the like, should be construed broadly and can be either fixed connections or detachable connections, or integral; can be mechanical or electrical connections; can be direct connections or indirect connections via intermediate media; can be internal connections of two elements or interaction relationship between two elements, unless specifically defined otherwise. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] In the present application, unless specifically defined otherwise, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through intermediate media. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0028] It should be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on the other element or there can be a mediating element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or there can be a mediating element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not the only implementation.

[0029] Please refer to Figures 1 to 5 The present application provides an injection molding machine valve plate function test platform 20, which comprises a receiving cabinet 210, a clamping device 10, a test mechanism 220 and a control mechanism.

[0030] The clamping device is arranged on the receiving cabinet 210 for clamping and fixing the valve plate 800 to be tested. In the embodiment, a plurality of lifting lugs 211 are arranged around the receiving cabinet 210 for hooking and lifting the receiving cabinet 210 by a lifting device. In an embodiment, a plurality of supporting feet 212 are arranged at the bottom of the receiving cabinet 210 to avoid moisture. In another embodiment, a plurality of rotating wheels are arranged at the bottom of the receiving cabinet 210 to facilitate movement of the receiving cabinet 210. Further, the rotating wheels are universal wheels.

[0031] The testing mechanism 220 comprises an oil tank 221, a hydraulic pump 222, an oil delivery pipe 223, a safety pressure valve block 224, a backflow pipe 225 and a pressure gauge 226. The oil tank 221 is arranged in the receiving cabinet 210. In the embodiment, an oil filling nozzle 201 is arranged on the oil tank 221, and the oil tank 221 is filled with oil through the oil filling nozzle 201. Further, a cleaning valve 202 is arranged on the oil tank 221, and the oil tank 221 is cleaned through the cleaning valve 202. The input end of the hydraulic pump 222 is communicated with the oil tank 221, and the output end of the hydraulic pump 222 is communicated with the input end of the oil delivery pipe 223. The output end of the oil delivery pipe 223 is communicated with the input end of the valve plate 800 to be tested. The safety pressure valve block 224 is arranged on the oil delivery pipe 223. The input end of the backflow pipe 225 is communicated with the output end of the valve plate 800 to be tested. The pressure gauge 226 is arranged on the backflow pipe 225, and the output end of the backflow pipe 225 is communicated with the input end of the oil tank 221.

[0032] The hydraulic pump 222 and the pressure gauge 226 are electrically connected with the control mechanism. It should be noted that, in the embodiment, the control mechanism is a lower computer. Specifically, the control mechanism is a PLC, and in another embodiment, the control mechanism is a single-chip microcomputer. In other embodiments, the control mechanism comprises an upper computer and a lower computer, and the upper computer is electrically connected with the lower computer.

[0033] During the long-time working of the injection molding machine valve plate function test platform 20, the temperature of the oil will rise. In order to cool the oil, please refer to Figure 1 In one embodiment, the testing mechanism 220 further comprises a cooling machine 227, the cooling machine 227 is connected with the receiving cabinet 210, and the backflow pipe 225 is communicated with the input end of the oil tank 221 through the cooling machine 227. Further, the cooling machine 227 is an oil cooler. In another embodiment, the cooling machine 227 is a water cooler. In yet another embodiment, the cooling machine 227 is an air cooler. In this way, the cooling machine 227 can effectively cool the oil.

[0034] In order to accurately judge the test action, in one embodiment, the test mechanism 220 further comprises an oil pressure action detection assembly 230, which comprises a receiving frame 231, an action oil cylinder 232, a detection connecting plate 233 and a proximity sensor 234. The action oil cylinder 232 is arranged on the return pipe 225 and communicates with the return pipe 225, and the action oil cylinder 232 is connected with the receiving cabinet 210 through the receiving frame 231. The proximity sensor 234 is connected with the receiving frame 231 through the detection connecting plate 233. The proximity sensor 234 can detect the driving column 235 in the extended state in the action oil cylinder 232. The proximity sensor 234 is electrically connected with the control mechanism. That is, when the high-pressure oil in the return pipe 225 passes through, the oil pressure drives the driving column 235 to extend, and the proximity sensor 234 can detect the driving column 235 in the action oil cylinder 232 and transmit the corresponding signal to the control mechanism, proving the successful state of the detection action. In this way, the oil pressure action detection assembly 230 can accurately judge the test action.

[0035] In order to improve the working stability of the injection molding machine valve plate function test platform 20, in one embodiment, the test mechanism 220 further comprises a filter 228 arranged on the return pipe 225, which is used to filter out impurities in the oil. After passing through the filter 228, the oil flows into the oil tank 221. The filter 228 avoids the impurities in the oil from blocking the oil circuit, thereby improving the working stability of the injection molding machine valve plate function test platform 20.

[0036] The above-mentioned injection molding machine valve plate function test platform 20 clamps and fixes the valve plate 800 to be tested by the clamping device 10 during the working process. The hydraulic pump 222 transmits the oil in the oil tank 221 to the input end of the valve plate 800 to be tested through the oil delivery pipe 223. The safety pressure valve block 224 can control the oil pressure in the oil delivery pipe 223 to avoid safety hazards caused by excessive oil pressure. The oil flows back to the oil tank 221 through the return pipe 225 after passing through the valve plate 800 to be tested. The pressure gauge 226 is used to monitor the oil pressure in the return pipe 225 in real time and transmit the oil pressure information to the control mechanism. The control mechanism determines whether the sealing performance of the valve plate 800 to be tested is qualified according to the working pressure of the hydraulic pump 222 and the oil pressure information of the pressure gauge 226. The above-mentioned injection molding machine valve plate function test platform 20 has high test efficiency, high accuracy and low error for the valve plate 800 to be tested.

[0037] Please refer to Figures 2 to 5 , the clamping device 10 comprises a receiving plate 100, a driving mechanism 200, a connecting plate 300, two triangular supporting plates 400, an oil circuit communication block 500 and a plurality of detection valves 600.

[0038] The driving mechanism 200 is connected with the receiving plate 100. In the embodiment, the driving mechanism 200 is a driving oil cylinder, and further, the driving oil cylinder is communicated with the output end of the hydraulic pump 222. In another embodiment, the driving mechanism 200 is a driving air cylinder. The connecting plate 300 is connected with the receiving plate 100 perpendicularly. In the embodiment, the connecting plate 300 is integrally formed with the receiving plate 100. Each end of the connecting plate 300 is connected with the receiving plate 100 through a triangular supporting plate 400. Further, in another embodiment, each end of the connecting plate 300 is integrally formed with a corresponding triangular supporting plate 400. The connecting plate 300 is provided with a through hole 301. The oil passage connecting block 500 is adapted to the through hole 301, and the oil passage connecting block 500 is inserted into the through hole 301 and connected with the connecting plate 300. The oil passage connecting block 500 is provided with a plurality of detection oil channels 501. Each detection valve 600 is connected with the connecting plate 300. The output end of each detection oil channel 501 is communicated with the input end of a corresponding detection valve 600. The output end of the detection valve 600 is communicated with the return pipe 225.

[0039] The input end of each detection oil channel 501 is provided with a sealing interface mechanism 700. The sealing interface mechanism 700 comprises an input oil pipe 710, a soft vertebral body sealing ring 720, a connecting sleeve 730, an annular soft sealing gasket 740, and an extrusion pipe 750. One end of the input oil pipe 710 is communicated with the detection oil channel 501, and the end of the input oil pipe 710 away from the oil passage connecting block 500 is provided with a limiting ring 711. In the embodiment, the limiting ring 711 is integrally formed with the input oil pipe 710. The soft vertebral body sealing ring 720 is adapted to the input oil pipe 710, and the soft vertebral body sealing ring 720 is sleeved on the end of the input oil pipe 710 away from the limiting ring 711. The connecting sleeve 730 is sleeved on the input oil pipe 710, and the end of the connecting sleeve 730 away from the oil passage connecting block 500 is provided with a first annular blocking plate 731, and the other end is provided with a second annular blocking plate 732. In the embodiment, the first annular blocking plate 731 is integrally formed with the connecting sleeve 730. In another embodiment, the second annular blocking plate 732 is integrally formed with the connecting sleeve 730.

[0040] The annular soft sealing gasket 740 is arranged on the inner wall of the first annular barrier plate 731. In the embodiment, the annular soft sealing gasket 740 is a soft rubber gasket. In another embodiment, the annular soft sealing gasket 740 is a soft silica gel gasket. The inner diameter of the second annular barrier plate 732 is greater than the outer diameter of the limiting ring 711, the limiting ring 711 is matched with the connecting sleeve 730, and the limiting ring 711 is inserted into the connecting sleeve 730 and is in sliding connection with the connecting sleeve 730. The extrusion pipe 750 is connected with the second annular barrier plate 732, the extrusion pipe 750 is provided with a tapered hole 701, the tapered hole 701 is matched with the soft pyramidal sealing ring 720, the soft pyramidal sealing ring 720 is inserted into the tapered hole 701 and abuts against the extrusion pipe 750.

[0041] During the working process of the clamping device 10, the valve plate to be tested 800 is placed between the driving mechanism 200 and the oil passage connecting block 500, and the driving mechanism 200 abuts the valve plate to be tested 800 on the oil passage connecting block 500. In this process, the connecting pipe 810 on the valve plate to be tested 800 is inserted into the connecting sleeve 730 and the input oil pipe 710, the body of the valve plate to be tested 800 abuts on the first annular barrier plate 731, and the first annular barrier plate 731 abuts on the limiting ring 711 through the annular soft sealing gasket 740. On the other hand, the body of the valve plate to be tested 800 is driven by the first annular barrier plate 731, the connecting sleeve 730 and the extrusion pipe 750 to extrude the soft pyramidal sealing ring 720, and the soft pyramidal sealing ring 720 is extruded to extrude the input oil pipe 710, so that the input oil pipe 710 extrudes and fixes the connecting pipe 810 on the valve plate to be tested 800, so as to increase the connection stability of the valve plate to be tested 800 and the oil passage connecting block 500. That is, on the one hand, the limiting ring 711 and the annular soft sealing gasket 740 abut to play a preliminary sealing role, and on the other hand, the extrusion pipe 750 and the soft pyramidal sealing ring 720 abut to play a further sealing role. Secondly, the input oil pipe 710 extrudes and fixes the connecting pipe 810 on the valve plate to be tested 800, which plays a sealing role again. On the basis of multiple sealing, the valve plate to be tested 800 and the oil passage connecting block 500 can be perfectly sealed and connected, and the test accuracy and stability are greatly improved.

[0042] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present disclosure.

[0043] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are within the scope of protection of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. An injection molding machine valve plate functional test platform, characterized by, The utility model relates to a valve plate testing device, including: The receiving cabinet, clamping device, testing mechanism and control mechanism are provided; The clamping device is arranged on the receiving cabinet and is used for clamping and fixing the valve plate to be tested; The testing mechanism includes an oil tank, a hydraulic pump, an oil delivery pipe, a safety pressure valve block, a return pipe and a pressure gauge; The input end of the hydraulic pump is communicated with the oil tank, and the output end of the hydraulic pump is communicated with the input end of the oil delivery pipe; The output end of the oil delivery pipe is communicated with the input end of the valve plate to be tested; The safety pressure valve block is arranged on the oil delivery pipe; The input end of the return pipe is communicated with the output end of the valve plate to be tested; The pressure gauge is arranged on the return pipe, and the output end of the return pipe is communicated with the input end of the oil tank; 2. The injection molding machine valve plate functional test platform of claim 1, wherein, The hydraulic pump and the pressure gauge are electrically connected with the control mechanism; The clamping device includes a receiving plate, a driving mechanism, a connecting plate, two triangular supporting plates, an oil passage communication block and a plurality of detection valves; The driving mechanism is connected with the receiving plate and is a driving oil cylinder communicated with the output end of the hydraulic pump; The connecting plate is perpendicularly connected with the receiving plate; Each end of the connecting plate is connected with the receiving plate through a triangular supporting plate; A through hole is formed in the connecting plate, and the oil passage communication block is matched with the through hole and is inserted into the through hole and connected with the connecting plate; A plurality of detection oil channels are formed in the oil passage communication block; Each detection oil channel is connected with a detection valve; A sealing interface mechanism is arranged at the input end of each detection oil channel; The sealing interface mechanism includes an input oil pipe, a soft vertebral body sealing ring, a connecting sleeve, an annular soft sealing gasket and an extrusion pipe; One end of the input oil pipe is communicated with the detection oil channel, and the other end of the input oil pipe away from the oil passage communication block is provided with a limiting ring; The soft vertebral body sealing ring is matched with the input oil pipe and is sleeved on the other end of the input oil pipe away from the limiting ring; The connecting sleeve is sleeved on the input oil pipe, and the connecting sleeve is provided with a first annular barrier plate at one end away from the oil passage communication block and a second annular barrier plate at the other end; The annular soft sealing gasket is arranged on the inner wall of the first annular barrier plate; The inner diameter of the second annular barrier plate is larger than the outer diameter of the limiting ring, the limiting ring is matched with the connecting sleeve, the limiting ring is inserted into the connecting sleeve and is slidingly connected with the connecting sleeve; The extrusion pipe is connected with the second annular barrier plate, the extrusion pipe is provided with a tapered hole matched with the soft vertebral body sealing ring, and the soft vertebral body sealing ring is inserted into the tapered hole and abuts against the extrusion pipe. The testing mechanism further includes a cooling machine connected with the receiving cabinet, and the return pipe is communicated with the input end of the oil tank through the cooling machine.

3. The injection molding machine valve plate functional test platform of claim 1, wherein, The test mechanism further comprises an oil pressure action detection assembly, which comprises a receiving frame, an action oil cylinder, a detection connecting plate and a proximity sensor; the action oil cylinder is arranged on the return pipe and communicates with the return pipe, and the action oil cylinder is connected with the receiving cabinet through the receiving frame; the proximity sensor is connected with the receiving frame through the detection connecting plate; the proximity sensor can detect a driving column in an extended state in the action oil cylinder; and the proximity sensor is electrically connected with the control mechanism.

4. The injection molding machine valve plate functional test platform of claim 1, wherein, The test mechanism further comprises a filter arranged on the return pipe.

5. The injection molding machine valve plate functional testing platform of claim 1, wherein, An oil injection nozzle is arranged on the oil tank.

6. The injection molding machine valve plate functional testing platform of claim 1, wherein, A cleaning valve is arranged on the oil tank.

7. The injection molding machine valve plate functional testing platform of claim 1, wherein, A plurality of lifting lugs are arranged around the receiving cabinet.

8. The injection molding machine valve plate functional testing platform of claim 1, wherein, A plurality of supporting feet are arranged at the bottom of the receiving cabinet.

9. The injection molding machine valve plate functional testing platform of claim 1, wherein, A plurality of rotating wheels are arranged at the bottom of the receiving cabinet.

10. The injection molding machine valve plate functional test platform of claim 9, wherein, The rotating wheels are universal wheels.

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