CN214010687U - A airtight detection device for die-casting product short-term test gas tightness - Google Patents
A airtight detection device for die-casting product short-term test gas tightness Download PDFInfo
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- CN214010687U CN214010687U CN202023135031.8U CN202023135031U CN214010687U CN 214010687 U CN214010687 U CN 214010687U CN 202023135031 U CN202023135031 U CN 202023135031U CN 214010687 U CN214010687 U CN 214010687U
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Abstract
The utility model discloses an airtight detection device for die-casting product short-term test gas tightness. The device comprises a first cylinder, a cylinder bracket, a guide pillar, a guide sleeve, an upper pressure plate, an upper air inlet base, a lower air inlet base and a product positioning block; a plurality of product positioning blocks are arranged on the top of the lower air inlet base; the first cylinder is vertically arranged on the cylinder bracket; the two vertical guide posts are arranged on the cylinder bracket through guide sleeves; the upper pressure plate is horizontally sleeved on the two guide posts; the upper air inlet base is fixedly connected with the bottom end of the upper pressure plate; the lower part of the upper air inlet base is provided with a middle groove, and a pressing block spring and a pressing block are arranged in the middle groove; the top of the pressing block spring is propped against the upper air inlet base, and the bottom of the pressing block spring is inserted into the top of the pressing block; a circle of small check ring is arranged outside the bottom of the pressing block; an inflation channel is arranged beside the middle groove of the upper air inlet base; an L-shaped inflation channel is arranged in the lower air inlet base. The air tightness detection device solves the problems of accuracy and rapidity of air tightness detection of die-casting products in specific shapes, and can meet the requirements of mass production.
Description
Technical Field
The utility model belongs to the technical field of die-casting, a airtight detection device for die-casting product short-term test gas tightness is related to.
Background
Some die-casting products with special structures need to be subjected to air tightness detection after being processed and cleaned by a die-casting machine. For example, as shown in fig. 1, 2, 3, 4, a die-cast product 30 is a special structural automobile component, and includes a flange ring 33 with a certain thickness (3.5-4mm), three bolt holes 44 (capable of being assembled with other automobile components) are provided at the periphery of the flange ring 33, a cover 35 is provided at the upper part of the flange ring 33, a ring sleeve 39 is provided at the lower part of the flange ring 33, two symmetrical circular arc-shaped large openings 32 and a circular arc-shaped small opening 34 are provided on the cover 35, a protruding round block 36 is provided at the center top of the cover 35, the upper end face of the round block 36 is higher than the cover 35 (located at the outer side of the cover 35), and a small screw hole 37 (capable of being installed with other accessories) is provided at the center of the top of the upper end of the round block 36; inside the cover cap 35, a hollow cylinder with an outer diameter smaller than the diameter of the round block 36 is arranged below the round block 36, a small cylinder 38 is arranged inside the hollow cylinder and at the center below the round block 36, a pin hole 45 (in which a steel pin can be inserted) is arranged at the center of the small cylinder 38, and three small clapboards 46 are uniformly divided into three cavities 31 between the small cylinder 38 and the inner wall of the hollow cylinder below the round block 36; that is, the die-cast product has three middle cavity portions (i.e., at three cavities 31) and three outer window portions (i.e., at two large openings 32 and one small opening 34); the 3 cavities 31 belong to the middle cavity part of the product, and the three outer window parts (namely two large openings 32 and one small opening 34) belong to the outer cavity part of the product; customers have special requirements in terms of gas tightness for such die cast products: and respectively detecting the air tightness of the middle cavity part and the outer cavity part of the product under the condition of the air pressure of 140KPa, wherein the leakage rate is not more than 0.5 cc/min.
Due to the particularity of the product structure and the fact that whether the air tightness meets the requirements of customers is not as intuitive as size measurement, whether the air tightness of the product meets the requirements of customers is difficult to judge; the product also has subsequent processing procedures, and the cost of production and manufacturing materials and labor cost are directly increased if the judgment is wrong; in addition, the greater yield of the product itself increases the above-mentioned risks.
The existing method for detecting the air tightness of the die-casting product with the special structure generally comprises the following steps: as shown in fig. 5, a sealing block 42 is manually inserted into the inner side of the product, two sealing rings 13 and 14 are respectively inserted into two connecting parts of the sealing block 42 and the product for sealing connection, an inflation hole is formed in the center of the sealing block 42, and the middle part of the product is subjected to air tightness detection after inflation; the outer side of the product is manually covered with a sealing cover 43, a sealing ring 12 is filled in the connecting position of the sealing cover 43 and the product for sealing connection, an inflation hole channel is formed in the center of the sealing cover 43, and the outer side of the product is subjected to air tightness detection after inflation. The air tightness detection method is complex in operation, low in detection accuracy, long in detection time (generally requiring tens of minutes), low in detection speed and incapable of meeting the requirements of mass production.
At present, an air tightness detection instrument for rapidly detecting the air tightness of the die-casting products (specific products) with special structures does not exist.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a detection accuracy height customized according to specific product, detect the short special quick gas tightness detecting instrument consuming time, an airtight detection device who is used for die-casting product short-term test gas tightness promptly.
The technical scheme of the utility model as follows:
the utility model relates to an air tightness detection device for rapidly detecting air tightness of die-casting products, which comprises one or more air tightness detection jigs (namely detection instruments); each air tightness detection jig comprises a first air cylinder, an air cylinder bracket, a guide pillar, a guide sleeve, an upper pressing plate, an upper air inlet base, a lower air inlet base, a pressing block spring, a pressing block and a plurality of product positioning blocks; a plurality of product positioning blocks which are matched with the die-casting products in shape and size are arranged on the top of the lower air inlet base; the first cylinder is vertically arranged on the cylinder bracket; the left and right guide pillars which are vertically arranged are arranged on the cylinder bracket through guide sleeves; the upper pressure plate is horizontally arranged and sleeved at the bottoms of the two guide pillars; the upper air inlet base is fixedly connected with the bottom end of the upper pressure plate; the lower part of the upper air inlet base is provided with a middle groove, and a pressing block spring and a pressing block are arranged in the middle groove; the top of the pressing block spring is propped against the upper air inlet base at the top of the middle groove; the bottom of the pressing block spring is inserted into the top of the pressing block; a circle of small check ring is arranged outside the bottom of the pressing block; the bottom of the pressing block is provided with an opening, namely a gas channel; a certain gap, namely a gas channel, is formed between the small retainer ring and a top protruding block of the die-casting product which is placed on the product positioning block in place; an inflation channel is arranged beside the middle groove of the upper air inlet base; the cylinder bracket is fixedly arranged on a bottom plate on the workbench; the lower air inlet base is fixedly arranged on a bottom plate on the workbench; an L-shaped inflation channel is arranged in the lower air inlet base.
Furthermore, the air tightness detection device of the utility model also comprises a frame which is divided into an upper layer, a middle layer and a lower layer; the upper layer is provided with an operation box and an instrument box; a waste box (unqualified product box) is arranged at the upper part of the lower layer, and an electric cabinet is arranged at the lower part of the lower layer; the bottom of the middle layer is provided with a workbench, and the workbench is provided with the air tightness detection jig.
Furthermore, the air tightness detection device of the utility model also comprises a mark rod and a second cylinder; openings are arranged on the first positioning block and the second positioning block of the product, and the front end of the mark rod is inserted from the openings and connected with the outer side end of the product; the rear end of the mark rod is connected with the front end of a push rod of the second cylinder; the second cylinder is transversely arranged on the workbench.
Furthermore, the first air cylinder and the second air cylinder are respectively connected with a compressed air pipeline in a factory through an inflation pipeline, and an inflation valve is arranged on the inflation pipeline and is arranged in the instrument box; the two inflation valves which are arranged in the instrument box and respectively connected with the first cylinder and the second cylinder are connected with the output end of a PLC controller in the electric cabinet.
Furthermore, an infrared sensor (i.e. a signal device) for monitoring whether the upper pressure plate moves down to the proper position is arranged on the cylinder bracket of each detection instrument; a manual starting button and a manual stopping button are arranged beside the detection instrument on the rack.
Furthermore, a grating sensor for protecting the safety of operators is arranged beside each detection instrument on the rack.
Further, the plurality of product positioning blocks comprise a first product positioning block, a second product positioning block and a third product positioning block; a third product positioning block is fixed on the lower air inlet base; the first product positioning block is fixed on the lower air inlet base; the second product positioning block is fixed on the first product positioning block.
Furthermore, a third product positioning block is fixed on the lower air inlet base through a screw; the first product positioning block is fixed on the lower air inlet base through a screw; the second product positioning block passes through the first product positioning block by a screw and is fixed on the lower air inlet base.
Furthermore, the pressing block is provided with a central through hole, the top of the pressing block is provided with an upward convex connecting part with the spring (the bottom of the spring of the pressing block is inserted into the connecting part with the spring), and the bottom of the pressing block is provided with a circle of downward convex connecting part with the retainer ring (the small retainer ring is sleeved outside the circle of the bottom of the pressing block and the connecting part with the retainer ring); the ring and the retainer ring connecting part are not closed, and two symmetrical openings (namely gas channels) are arranged on the two sides of the ring and the retainer ring connecting part.
Furthermore, a first quick connector is arranged at an inlet of the inflation channel beside the middle groove of the upper air inlet base; and a second quick connector is arranged at the inlet of the inflation channel beside the lower air inlet base. An inflation channel beside the middle groove of the upper air inlet base is connected with a compressed air pipeline in a factory through a first quick connector and an inflation pipeline, and an inflation valve is arranged on the inflation pipeline and is arranged in the instrument box; an inflation channel in the lower air inlet base is connected with a compressed air pipeline in a factory through a second quick connector and an inflation pipeline, and an inflation valve is arranged on the inflation pipeline and is arranged in the instrument box; the two inflation valves which are arranged in the instrument box and respectively connected with the first quick connector and the second quick connector are connected with the output end of a PLC controller in the electric cabinet.
The utility model has the advantages that:
the utility model discloses an airtight detection device for die-casting product short-term test gas tightness is a tool that is used for the gas tightness of quick and accurate detection product, and what milliliter gas is leaked every minute to the product of can feeding back.
The utility model discloses an airtight detection device for die-casting product short-term test gas tightness, the accuracy and the rapidity problem that the gas tightness of the die-casting product of specific shape detected have been solved, whether the product is customer's requirement is judged to the gas tightness state that detects out the product through the gas tightness detection tool of customizing, whether follow-up procedure carries out to the reconfirmination, the cost control of big product in die-casting production link has been strengthened in batches, the waste of material and cost of labor has been reduced, the burden of die-casting enterprise has been reduced.
Drawings
Fig. 1 is a schematic structural view of a die-cast product of a special structure in the present invention (the outer side of the product is upward);
fig. 2 is a schematic structural view of a die-cast product according to the present invention (with the inside of the product facing upward);
fig. 3 is a schematic structural view of a die-cast product of a special structure according to the present invention, in which a half is cut away;
FIG. 4 is a schematic structural view of a middle section of a die-cast product of a special structure according to the present invention;
FIG. 5 is a schematic view of a conventional airtightness detection method;
fig. 6 is a schematic structural diagram of the air tightness detection device for rapidly detecting the air tightness of the die-casting product according to the present invention;
fig. 7 is a schematic structural view of the air-tightness detection jig of the present invention in one direction;
fig. 8 is a schematic structural view of the air-tightness detecting jig of the present invention in another direction;
fig. 9 is a schematic sectional view of the air tightness detecting jig of the present invention;
fig. 10 is a schematic structural view of the pressing block 9 in one direction in the present invention;
fig. 11 is a schematic structural view of the pressing block 9 in another direction;
fig. 12 is a schematic front structural view of the pressing block 9 of the present invention;
fig. 13 is a schematic structural view of the pressing block 9 and the pressing block spring 8 of the present invention mounted together;
fig. 14 is a schematic structural view of the pressing block 9 and the pressing block spring 8 of the present invention mounted together.
In the figure: 1. the device comprises a first air cylinder 2, a guide post 3, an air cylinder bracket 4, a guide sleeve 5, an upper pressure plate 6, an upper air inlet base 7, a lower air inlet base 8, a pressing block spring 9, a pressing block 10, a small check ring 11, an air cylinder push rod 12, a sealing ring 13, a sealing ring 14, a sealing ring 15, a mark rod 16, a first quick joint 17, a second quick joint 18, a first product positioning block 19, a second product positioning block 20, a third product positioning block 21, a second air cylinder 22, a frame 23, a grating sensor 24, an infrared sensor 25, an operation box 26, a first instrument box 27, a second instrument box 28, a first air tightness detection jig 29, a second air tightness detection jig 30, a product 31, a cavity 32, a large opening 33, a flange ring 34, a small opening 35, a cover cap 36, a round block 37, The small screw hole 38, the small cylinder 39, the ring sleeve 41, the bottom plate 42, the sealing block 43, the sealing cover 44, the bolt hole 45, the pin hole 46, the small partition plate 47, the first manual starting button 48, the second manual starting button 49, the manual stopping button 50, the electric cabinet 51, the waste box 91, the spring connecting part 92, the retainer ring connecting part 93, the opening 94, the small retainer ring sleeving part 95 and the central through hole
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
Examples
As shown in fig. 6, the utility model relates to an air tightness detecting device for fast detecting air tightness of die casting products, which comprises a frame 22, wherein the frame 22 is divided into an upper layer, a middle layer and a lower layer; an operation box 25 is arranged in the middle of the upper layer, and a first instrument box 26 and a second instrument box 27 are respectively arranged on the left side and the right side; a waste box 51 is arranged at the upper part of the lower layer, and an electric cabinet 50 is arranged at the lower part; the bottom of the middle layer is a workbench, and the workbench is provided with a left air tightness detection jig and a right air tightness detection jig (namely two sets of detection instruments).
The utility model discloses an airtight detection device includes two detecting instrument, two gas tightness detection tool promptly (first gas tightness detection tool 28, second gas tightness detection tool 29 promptly). As shown in fig. 7, 8 and 9, each air tightness detection jig (i.e., a detection instrument) includes a first air cylinder 1, a guide pillar 2, an air cylinder bracket 3, a guide sleeve 4, an upper pressure plate 5, an upper air inlet base 6, a lower air inlet base 7, a bottom plate 41, a pressure block spring 8, a pressure block 9, a small retainer ring 10, a first quick coupling 16, a second quick coupling 17, a first product positioning block 18, a second product positioning block 19 and a third product positioning block 20; a first product positioning block 18, a second product positioning block 19 and a third product positioning block 20 which are matched with the die-casting product 30 in shape and size are arranged on the top of the lower air inlet base 7; the third product positioning block 20 is fixed on the lower air inlet base 7 through a screw; the first product positioning block 18 is also fixed on the lower air inlet base 7 through a screw; the second product positioning block 19 is fixed on the lower air inlet base 7 by a screw passing through the first product positioning block 18. The first cylinder 1 is vertically arranged on a cylinder support 3. The left and right guide posts 2 which are vertically arranged are arranged on the cylinder bracket 3 through guide sleeves 4; the upper pressure plate 5 is horizontally arranged and sleeved at the lower parts of the two guide pillars 2; the upper air inlet base 6 is fixedly connected with the bottom end of the upper pressure plate 5. The lower part of the upper air inlet base 6 is provided with a middle groove (a circular counter bore), and a pressing block spring 8 and a pressing block 9 which are arranged together are arranged in the middle groove; the top of the briquetting spring 8 is propped against the upper air inlet base 6 at the top of the middle groove; the bottom of the pressing block spring 8 is inserted into the top of the pressing block 9; a circle of small retainer ring 10 is arranged around the bottom of the pressing block 9; the bottom of the pressing block 9 is provided with an opening, namely a gas channel; a certain gap, i.e. a gas channel, is formed between the small retainer ring 10 and a top protruding round block 36 of the die-casting product 30 which is placed in place on the product positioning block. The cylinder bracket 3 is fixedly arranged on a bottom plate 41 on the workbench; the lower air inlet base 7 is fixedly arranged on a bottom plate 41 on the workbench.
As shown in fig. 9, an inflation channel is arranged beside the middle groove of the upper air inlet base 6, a first quick coupling 16 is arranged at the inlet of the inflation channel, the inflation channel is connected with a compressed air pipeline in a factory through the first quick coupling 16 and an inflation pipeline, an inflation valve is arranged on the inflation pipeline, and the inflation valve is arranged in the instrument box (a first instrument box 26 and a second instrument box 27). An L-shaped inflation channel is arranged in the lower air inlet base 7, a second quick connector 17 is arranged at the inlet of the inflation channel beside the lower air inlet base 7, the inflation channel is connected with a compressed air pipeline in a factory through the second quick connector 17 and an inflation pipeline, an inflation valve is arranged on the inflation pipeline, and the inflation valve is arranged in an instrument box (a first instrument box 26 and a second instrument box 27). The two inflation valves respectively connected with the first quick connector 16 and the second quick connector 17 and arranged in the instrument boxes (the first instrument box 26 and the second instrument box 27) are connected with the output end of a PLC controller in the electric control box 50, and the electric control box 50 respectively judges and controls the inflation valve connected with the first quick connector 16 and the inflation valve connected with the second quick connector 17 according to the received signals and set conditions.
As shown in fig. 8 and 9, the air tightness detecting device of the present invention further includes a mark rod 15 and a second cylinder 21; openings are formed in the first positioning block 18 and the second product positioning block 19, and the front end of the mark rod 15 is inserted from the openings and connected with the outer side end of the product 30; the rear end of the marking rod 15 is connected with the front end of a push rod of the second air cylinder 21. The second cylinder 21 is disposed transversely on the table. The first cylinder 1 and the second cylinder 21 are respectively connected with a compressed air pipeline in a factory through inflation pipelines, and inflation valves are arranged on the inflation pipelines and are arranged in instrument boxes (a first instrument box 26 and a second instrument box 27); the two inflation valves respectively connected with the first cylinder 1 and the second cylinder 21 and arranged in the instrument boxes (the first instrument box 26 and the second instrument box 27) are connected with the output end of a PLC controller in the electric control box 50, and the electric control box 50 respectively judges and controls the inflation valve connected with the first cylinder 1 and the opening inflation time and the inflation duration (namely the action time and the action duration of the first cylinder 1 and the second cylinder 21) of the inflation valve connected with the second cylinder 21 according to the received signals and set conditions.
As shown in fig. 6, the left and right sides of the front portion of the middle bottom table of the frame 22 are respectively provided with a manual start button (a first manual start button 47 and a second manual start button 48). A manual stop button 49 is also provided on one side of the table.
As shown in fig. 6, a grating sensor 23 for protecting the safety of the operator is provided beside the two detection instruments on the frame 22. An infrared sensor 24 (i.e., a signal device) for monitoring whether the upper press plate 5 moves down to the right is arranged on the left workbench of the cylinder bracket 3 of each detection instrument.
As shown in fig. 10, 11, 12, 13 and 14, the pressing block 9 is provided with a central through hole 95, the top of the pressing block 9 is provided with an upward protruding and spring connecting part 91 (the bottom of the pressing block spring 8 is inserted into the spring connecting part 91 of the pressing block 9), the bottom of the pressing block 9 is provided with a downward protruding circle and retainer ring connecting part 92 (the small retainer ring 10 is enclosed outside the circle and retainer ring connecting part 92 at the bottom of the pressing block 9, namely, the small retainer ring connecting part 94 in fig. 10); the ring and retainer ring connecting part 92 is not closed, and two symmetrical openings 93, namely, flushing gas passages, are formed in the two sides of the ring and retainer ring connecting part; the inner diameter of the small retainer ring 10 is slightly larger than the outer diameter of the top protruding round block 36 of the casting product 30, and a gap, namely a punching gas channel, of about 0.5mm is formed between the small retainer ring 10 and the corresponding shape of the casting product 30 placed in place on the product positioning block, namely the top protruding round block 36 of the die casting product 30; when the pressing block 9 presses the casting product 30, the outer cavity of the casting product 30 is communicated with the central through hole 95 of the pressing block 9 through the gas passages; that is, the ram gas entering the upper inlet base 6 from the charging channel passes through the two openings 93 at the bottom of the pressing block 9 and then passes through the gap of about 0.5mm between the small retainer ring 10 and the protruding round block 36 at the top of the product 30, and enters the outer cavity of the product 30 to perform gas leakage detection.
Use the utility model discloses an airtight detection device carries out the step that the gas tightness detected to the die-casting product as follows:
after the equipment is powered on, the air tightness detection device is reset (the upper pressure plates 5 of the two detection instruments rise to the highest position), and the two detection instruments are in standby after power-on self-detection.
An operator places two products 30 to be detected on product positioning blocks (a first product positioning block 18, a second product positioning block 19 and a third product positioning block 20) of two air tightness detection jigs respectively and ensures that the products are placed in place (the first product positioning block 18 props against the outer side of an outer ring of a flange cover 33 of the products 30, the second product positioning block 19 props against the outer side of a flange bolt connection part of the products 30, and the third product positioning block 20 props against the inner side of the products 30); then, the manual start buttons (the first manual start button 47 and the second manual start button 48) located on the left and right sides of the table are simultaneously pressed by both hands; at the moment, the PLC control system of the equipment respectively controls the first air cylinders 1 of the two sets of air tightness detection jigs to push the upper pressure plate 5 downwards to move, the sealing rings (the sealing rings 12, 13 and 14) between equipment parts are used for ensuring that the equipment does not have the leakage problem, and the pressing block 9 and the pressing block spring 8 in the equipment are used for ensuring that the machining surface of a product is in close contact with the sealing rings (the pressing force is provided by the pressing block spring 8) after the upper pressure plate 5 moves downwards to a proper position, so that the air pressure of an air tightness detection space of an air inflation part in the equipment can reach the detection requirement of 140KPa after air inlet.
After the upper pressing plate 5 moves downwards to the proper position, a signal device (an infrared sensor 24) feeds back a proper position signal to a PLC control system of the equipment, and the PLC control system of the equipment starts to perform automatic air tightness detection (automatically controlled by a PLC controller); the working process is as follows:
firstly, the PLC control system of the device controls the inflation valves arranged in the instrument boxes (first instrument box 26 and second instrument box 27) and connected with the second quick coupling 17 on the lower air inlet base 7 and the inflation channel in the lower air inlet base 7 to open, the middle cavity of the product is inflated for 10s through the inflation channel arranged in the lower air inlet base 7, then the inflation valves are closed and the gas leakage amount of the central part of the product is detected, and after 4s, the detection result can be obtained, and whether the technical requirements are met or not is judged according to the detection result:
1. meeting the requirements (the leakage amount is 0-0.5 ml/min.): and feeding back the measured leakage data to a display screen of the instrument box on the same side for workers to confirm the leakage condition of the product.
2. Unsatisfactory (leakage over 0.5 ml/min.): the detection instrument (on the display screen of the operation box) can prompt which equipment has a product with unsatisfactory air tightness and give an alarm.
Next, the PLC control system of the device controls the inflation valve, which is arranged in the instrument box (first instrument box 26, second instrument box 27), is connected with the first quick connector 16 on the upper air inlet base 6 and the inflation channel in the upper air inlet base 6 to be opened, inflates the outer cavity part of the product for 10s through the inflation channel arranged in the upper air inlet base 6, then closes the inflation valve and starts to detect the gas leakage amount of the outer cavity part of the product, and can obtain the detection result after 4s, and determines whether to meet the technical requirements according to the detection result:
1. meeting the requirements (the leakage amount is 0-0.5 ml/min.): and feeding back the measured leakage data to a display screen of the instrument box on the same side for workers to confirm the leakage condition of the product.
2. Unsatisfactory (leakage over 0.5 ml/min.): the detection instrument (on the display screen of the operation box) can prompt which equipment has a product with unsatisfactory air tightness and give an alarm.
(the time spent, testing requirements, result feedback and equipment action for air intake from the upper intake base 6 is the same as for air intake from the lower intake base 7.)
And finally, only when the air tightness detection results of the upper air inlet and the lower air inlet meet the requirements, the PLC control system of the equipment controls the second air cylinder 21 to push the marking rod 15 to eject a pit on the product 30 with the air tightness meeting the requirements, and the air tightness of the product meets the requirements of customers.
Then, the PLC control system of the equipment respectively controls the first air cylinders 1 of the two sets of air tightness detection jigs to move upwards to drive the upper pressing plates 5 to move upwards, and the upper pressing plates 5 of the two sets of equipment return to the initial positions to wait for operators to take and classify the workpieces; the unsatisfactory products are put into a waste box 51 (reject box) to be treated; the rest products meeting the requirements are transferred to the next procedure for subsequent treatment.
Two grating sensors 23 are respectively arranged on two sides of the two air tightness detection jigs, and the two grating sensors 23 are respectively fixed on the machine frame at the positions which are parallel to the heights of the two air tightness detection jigs. In the process from the pressing of the manual start button to the completion of the action of the equipment or the pressing of the stop button, the grating sensor 23 works in the whole process, collects a blocking signal between two gratings in time and feeds the blocking signal back to a PLC control system of the equipment to perform automatic pause action so as to protect the safety of an operator (prevent the hand of the operator from being clamped between the upper air inlet base and the lower air inlet base by the pressing block).
The two sets of equipment work simultaneously, and the time taken to detect every two products (one beat, namely, the upper press plate goes up and down for one stroke and one cycle) is 65 s. The detection time is short, the detection speed is high, and the requirement of mass production can be met.
Claims (10)
1. An air tightness detection device for rapidly detecting air tightness of die-casting products is characterized by comprising one or more air tightness detection jigs, namely detection instruments; each air tightness detection jig comprises a first air cylinder, an air cylinder bracket, a guide pillar, a guide sleeve, an upper pressing plate, an upper air inlet base, a lower air inlet base, a pressing block spring, a pressing block and a plurality of product positioning blocks; a plurality of product positioning blocks which are matched with the die-casting products in shape and size are arranged on the top of the lower air inlet base; the first cylinder is vertically arranged on the cylinder bracket; the left and right guide pillars which are vertically arranged are arranged on the cylinder bracket through guide sleeves; the upper pressure plate is horizontally arranged and sleeved at the bottoms of the two guide pillars; the upper air inlet base is fixedly connected with the bottom end of the upper pressure plate; the lower part of the upper air inlet base is provided with a middle groove, and a pressing block spring and a pressing block are arranged in the middle groove; the top of the pressing block spring is propped against the upper air inlet base at the top of the middle groove; the bottom of the pressing block spring is inserted into the top of the pressing block; a circle of small check ring is arranged outside the bottom of the pressing block; the bottom of the pressing block is provided with an opening, namely a gas channel; a certain gap, namely a gas channel, is formed between the small retainer ring and a top protruding block of the die-casting product which is placed on the product positioning block in place; an inflation channel is arranged beside the middle groove of the upper air inlet base; the cylinder bracket is fixedly arranged on a bottom plate on the workbench; the lower air inlet base is fixedly arranged on a bottom plate on the workbench; an L-shaped inflation channel is arranged in the lower air inlet base.
2. The airtightness detection apparatus for rapidly detecting the airtightness of a die-cast product according to claim 1, further comprising a frame partitioned into upper, middle and lower three layers; the upper layer is provided with an operation box and an instrument box; a waste box is arranged at the upper part of the lower layer, and an electric cabinet is arranged at the lower part of the lower layer; the bottom of the middle layer is provided with a workbench, and the workbench is provided with the air tightness detection jig.
3. The airtightness detection apparatus for rapidly detecting the airtightness of the die-cast product according to claim 2, wherein said airtightness detection apparatus further comprises a marking rod, a second cylinder; openings are arranged on the first positioning block and the second positioning block of the product, and the front end of the mark rod is inserted from the openings and connected with the outer side end of the product; the rear end of the mark rod is connected with the front end of a push rod of the second cylinder; the second cylinder is transversely arranged on the workbench.
4. The airtightness detection apparatus for rapidly detecting the airtightness of a die-cast product according to claim 3, wherein the first cylinder and the second cylinder are respectively connected to a compressed air pipe in a factory through an inflation pipe, and the inflation pipe is provided with an inflation valve which is provided in the instrument box; the two inflation valves which are arranged in the instrument box and respectively connected with the first cylinder and the second cylinder are connected with the output end of a PLC controller in the electric cabinet.
5. The airtightness detection apparatus for rapidly detecting the airtightness of a die-cast product according to claim 4, wherein an infrared sensor for monitoring whether the upper pressure plate is moved down to the right is provided on the table on the left side of the cylinder support of each detection instrument; a manual starting button and a manual stopping button are arranged beside the detection instrument on the rack.
6. The airtightness detection apparatus for rapidly detecting the airtightness of the die-cast product according to claim 5, wherein grating sensors for protecting the safety of the operator are provided on the frame beside the two detection instruments.
7. The airtightness detection apparatus for rapidly detecting the airtightness of a die-cast product according to claim 1 or 2, wherein the plurality of product positioning blocks include a product first positioning block, a product second positioning block, and a product third positioning block; a third product positioning block is fixed on the lower air inlet base; the first product positioning block is fixed on the lower air inlet base; the second product positioning block is fixed on the first product positioning block.
8. The airtightness detection apparatus for rapidly detecting the airtightness of a die-cast product according to claim 7, wherein a third product positioning block is fixed to the lower intake base by means of screws; the first product positioning block is fixed on the lower air inlet base through a screw; the second product positioning block passes through the first product positioning block by a screw and is fixed on the lower air inlet base.
9. The airtightness detection apparatus for rapidly detecting the airtightness of a die-cast product according to claim 1 or 2, wherein the pressing block is provided with a central through hole, the top of the pressing block is provided with an upwardly-projecting spring-connecting portion, and the bottom of the spring of the pressing block is inserted into the spring-connecting portion; the bottom of the pressing block is provided with a circle of downward-protruding and retaining ring connecting part, and the small retaining ring is surrounded and sleeved outside the circle of the bottom of the pressing block and the retaining ring connecting part; two symmetrical openings, namely gas channels, are arranged on two sides of the circle and the check ring connecting part.
10. The airtightness detection apparatus for rapidly detecting the airtightness of a die-cast product according to claim 1 or 2, wherein a first quick coupling is provided at an inlet of the inflation passage beside the intermediate groove of the upper air intake base; a second quick connector is arranged at an inlet of the inflation channel beside the lower air inlet base; an inflation channel beside the middle groove of the upper air inlet base is connected with a compressed air pipeline in a factory through a first quick connector and an inflation pipeline, and an inflation valve is arranged on the inflation pipeline and is arranged in the instrument box; an inflation channel in the lower air inlet base is connected with a compressed air pipeline in a factory through a second quick connector and an inflation pipeline, and an inflation valve is arranged on the inflation pipeline and is arranged in the instrument box; the two inflation valves which are arranged in the instrument box and respectively connected with the first quick connector and the second quick connector are connected with the output end of a PLC controller in the electric cabinet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202023135031.8U CN214010687U (en) | 2020-12-23 | 2020-12-23 | A airtight detection device for die-casting product short-term test gas tightness |
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| CN202023135031.8U CN214010687U (en) | 2020-12-23 | 2020-12-23 | A airtight detection device for die-casting product short-term test gas tightness |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114216630A (en) * | 2022-02-18 | 2022-03-22 | 常州江苏大学工程技术研究院 | Air tightness detection device for filter cavity |
| CN115957985A (en) * | 2023-02-13 | 2023-04-14 | 成立航空技术(成都)有限公司 | Aerospace engine fuel nozzle tightness detection device |
| WO2023221777A1 (en) * | 2022-05-19 | 2023-11-23 | 安徽信息工程学院 | Air tightness test apparatus for motor flange end cap |
-
2020
- 2020-12-23 CN CN202023135031.8U patent/CN214010687U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114216630A (en) * | 2022-02-18 | 2022-03-22 | 常州江苏大学工程技术研究院 | Air tightness detection device for filter cavity |
| CN114216630B (en) * | 2022-02-18 | 2022-04-29 | 常州江苏大学工程技术研究院 | Air tightness detection device for filter cavity |
| WO2023221777A1 (en) * | 2022-05-19 | 2023-11-23 | 安徽信息工程学院 | Air tightness test apparatus for motor flange end cap |
| CN115957985A (en) * | 2023-02-13 | 2023-04-14 | 成立航空技术(成都)有限公司 | Aerospace engine fuel nozzle tightness detection device |
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