Shell forming device for lighter production

Abstract

The invention discloses a shell forming device for lighter production, and particularly relates to the field of plastic processing equipment.The shell forming device comprises a base box, a plurality of mold closing guide stand columns are arranged at the top of the base box, a top cover is installed at the tops of the multiple mold closing guide stand columns, and a hydraulic cylinder is arranged on the top cover; the output end of the hydraulic cylinder is connected with a movable mold mounting plate, and a movable mold plate is arranged at the bottom of the movable mold mounting plate. According to the shell forming device for lighter production, the racks arranged on the two sides of the movable mold plate are in meshing transmission with the overturning gear, so that the cleaning mechanism can be automatically overturned to be folded or unfolded along with lifting of the movable mold plate, the cleaning mechanism automatically avoids during mold closing, and the cleaning mechanism automatically resets and cleans the surface of a mold and a cavity during mold opening; and the cleaning procedure is seamlessly integrated in the injection molding period, additional driving units or shutdown manual intervention is not needed, and the production continuity and the equipment automation level are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of plastic processing equipment, in particular to a shell forming device for lighter production. BACKGROUND

[0002] The lighter is a fire taking device, and the production quality of its shell is directly related to the use performance and safety of the product. The most common lighter on the market is a disposable plastic lighter, and the overall shell is usually manufactured by plastic injection molding process. In the process of lighter shell injection molding, mold design, forming precision, cooling efficiency and demolding effect are key factors affecting product quality and production efficiency. During the closing and opening of the lighter shell injection molding equipment, impurities such as plastic debris, release agent or flash may be left on the surface of the mold and the cavity. If not cleaned in time, it will not only affect the surface quality of the next injection molding product, but also cause mold wear, poor closing, and even equipment failure.

[0003] Chinese patent document CN221968847U discloses a lighter shell forming device, which comprises a mounting mechanism and a forming mechanism for producing lighter shells. The forming mechanism is fixed above the mounting mechanism. The utility model discloses a forming mechanism is arranged, the injection tube is connected with the injection molding machine, the injection molding machine is started, the molten plastic enters the outer mold inside through the injection tube, the product is cooled and formed, and then the electric push rod is started. The electric push rod is retracted to drive the lifting block and the outer mold to rise. The lifting block rises to pull the traction rope, and the inner mold at the other end of the traction rope descends accordingly. The spring and the telescopic rod are compressed, the inner mold descends to drive the module to descend, the product adhered to the outside of the module is gradually separated from the module under the action of the supporting seat, and when the outer mold rises to the set position, the upper surface of the module and the upper surface of the supporting seat are on the same horizontal plane. At this time, the product is completely separated from the module, and then the worker can take the product. The existing technology has the following problems:

[0004] The above-mentioned document relies on manual cleaning or additional blowing device after stopping for cleaning the plastic debris left on the mold, which has the problems of incomplete cleaning, affecting production rhythm, increasing labor cost, etc. Although the existing automatic cleaning device can reduce the labor burden to some extent, it has the problems of complex structure, large space occupation, and cleaning action independent of the closing and opening process, which needs additional driving and control unit, and it is difficult to realize efficient synchronization with the injection molding cycle.

[0005] Especially under the background of rapid development of intelligent manufacturing equipment industry, injection molding equipment is developing towards high efficiency, high automation and low energy consumption. In the existing technology, there is a lack of integrated design that can naturally drive the cleaning mechanism to act during the closing and opening process, which leads to the disconnection between the cleaning process and the forming cycle, and restricts the production continuity and the intelligent level of the overall equipment. SUMMARY

[0006] The main purpose of the present application is to provide a shell forming device for lighter production, which can effectively solve the problems of incomplete mold cleaning, low production efficiency caused by the disconnection between cleaning process and injection molding cycle, serious waste of waste heat of cooling system and inconvenience of debris collection and processing in the prior art.

[0007] To achieve the above purpose, the technical scheme adopted by the present application is:

[0008] A shell forming device for lighter production, comprising a base box, a plurality of mold closing guide columns are arranged on the top of the base box, a top cover is installed on the top of the plurality of mold closing guide columns, a hydraulic cylinder is arranged on the top cover, a movable mold mounting plate is connected to the output end of the hydraulic cylinder, a movable mold plate is arranged on the bottom of the movable mold mounting plate, a fixed mold plate is arranged on the top of the base box for mold closing with the movable mold plate, a plurality of shell forming cavities are formed in the fixed mold plate, characterized in that: a turnover mechanism is arranged on the bottom of the top cover on both sides, the turnover mechanism comprises a rack and a turnover gear, the rack is arranged on the left and right sides of the movable mold plate, the rack is engaged with the turnover gear of the turnover mechanism, a cleaning mechanism that can rotate is connected to one side of the turnover gear, a heat exchange mechanism is arranged in the inner cavity of the base box, a liquid cooling mechanism is integrated in the fixed mold plate, the input end of the heat exchange mechanism is connected to the output end of the liquid cooling mechanism, the cleaning mechanism comprises a gas blowing mechanism, a debris collection drawer is arranged on both sides of the base box, the hot air output end of the heat exchange mechanism is selectively connected to the gas blowing mechanism of the cleaning mechanism or the bottom of the debris collection drawer.

[0009] Preferably, the turnover mechanism comprises a hanging plate fixed to the bottom of the top cover, the bottom end of the hanging plate is rotatably connected to the turnover gear through a rotating shaft, two limiting blocks are arranged on the side wall of the turnover gear, and the maximum rotating angle of the turnover gear is limited to 90 degrees by the two limiting blocks.

[0010] Preferably, the cleaning mechanism comprises a turnover mounting plate fixedly connected to the side wall of the turnover gear, a door-shaped turnover plate is connected to one end of the turnover mounting plate, L-shaped hanging plates are fixedly arranged on the bottom of the door-shaped turnover plate on the front and rear sides, and a reciprocating mechanism is arranged between the opposite faces of the horizontal parts of the two L-shaped hanging plates.

[0011] Preferably, the left and right reciprocating mechanisms each include a side plate fixed to the outer wall of the L-shaped hanging plate, and one of the reciprocating mechanisms includes a servo motor mounted on the side plate of the L-shaped hanging plate, the rear side of the left and right reciprocating mechanisms is movably provided with a transmission gear, the servo motor is connected with one of the transmission gears, the rear side of the two transmission gears is fixedly provided with a reciprocating lead screw, the reciprocating lead screw is rotatably connected with the side plate at the rear end and the rear side, a sliding block is movably connected with the reciprocating lead screw, a support rod is arranged on the upper and lower sides of the sliding block, and a cleaning brush plate for cleaning the bottom of the movable mold plate and the top of the fixed mold plate is arranged at the end of the two support rods.

[0012] Preferably, the air blowing mechanism includes a mounting horizontal rod fixed between the opposite faces of the front and rear L-shaped hanging plates, a plurality of air blowing nozzles are arranged on the mounting horizontal rod, the plurality of air blowing nozzles are located above the plurality of shell forming cavities after the two cleaning mechanisms are combined, the plurality of air blowing nozzles are connected with gas supply hoses, the other ends of the plurality of gas supply hoses are connected with a gas collecting pipe, and the gas collecting pipe is connected with the hot air output end of the heat exchange mechanism.

[0013] Preferably, the heat exchange mechanism includes a heat preservation sealed box arranged in the base box, an S-shaped bent copper pipe is coiled in the heat preservation sealed box, a water pump is arranged at the top of the heat preservation sealed box, the inlet of the S-shaped bent copper pipe is connected with the outlet of the liquid cooling mechanism through the water pump, a fan is arranged at the right side of the base box, an air inlet pipe is connected with the output end of the fan, the other end of the air inlet pipe penetrates into the inner cavity of the heat preservation sealed box, air outlet pipes are fixedly connected with the left and right sides of the heat preservation sealed box, and the other ends of the two air outlet pipes penetrate into the left and right sides of the base box and are fixedly connected with the air collecting pipe.

[0014] Preferably, the outer wall of the air collecting pipe is fixedly connected with a gas conveying hose one and a gas conveying hose two, the outer walls of the gas conveying hose one and the gas conveying hose two are each provided with an electric control valve, the gas conveying hose one is connected with the gas collecting pipe of the cleaning mechanism, and the gas conveying hose two is connected with an air pipe leading to the bottom of the debris collecting drawer.

[0015] Preferably, the liquid cooling mechanism includes a wrapped cooling pipe arranged around each shell forming cavity, a plurality of wrapped cooling pipes are connected with liquid inlet tubes, the bottoms of the plurality of liquid inlet tubes are connected with a water collecting pipe two, the bottom of the water collecting pipe two is fixedly connected with a liquid inlet pipe, the other end of the liquid inlet pipe is connected with the output end of the water pump, the outlet of the wrapped cooling pipe is connected with a water collecting pipe one through a backflow tube, one end of the water collecting pipe one is connected with a liquid outlet pipe, and the liquid outlet pipe is connected with the input end of the water pump.

[0016] Preferably, the left and right sides of the fixed mold plate are provided with arc guide blocks, the top of the base box is provided with arc collecting grooves on the front and back sides, the arc collecting grooves are located on the front and back sides of the fixed mold plate and the arc guide blocks to collect and clean the debris, the L-shaped hanging plate of the cleaning mechanism is provided with a scraping plate, and the bottom of the scraping plate is matched with the inner wall contour of the arc collecting groove when the scraping plate rotates, so that the debris is scraped into the debris collecting drawer.

[0017] Preferably, the top of the base box is provided with drawer clamping grooves on the left and right sides, the debris collecting drawer is arranged in the drawer clamping groove in a pullable manner, the inner wall bottom of the drawer clamping groove is provided with an air outlet groove, a shunt pipe is arranged in the air outlet groove, a plurality of air outlet holes are formed in the shunt pipe, the shunt pipe is connected with the air pipe of the heat exchange mechanism, and a plurality of air outlet holes penetrating into the inner cavities of the two air outlet grooves are formed in the left and right sides of the base box for discharging hot air.

[0018] Compared with the prior art, the present application has the following beneficial effects:

[0019] 1. The utility model provides a shell forming device for lighter production, through the meshing transmission of the rack and the turnover gear arranged on the both sides of the movable mold plate, the cleaning mechanism can automatically turn over and retract or expand the operation with the lifting of the movable mold plate, the cleaning mechanism automatically avoids when the mold is closed, and automatically resets and cleans the mold surface and the cavity when the mold is opened, so that the cleaning process is seamlessly integrated in the injection molding cycle, without additional driving unit or manual intervention, and the production continuity and equipment automation level are improved.

[0020] 2. The utility model provides a shell forming device for lighter production, through the heat exchange mechanism, the waste heat of the hot water discharged from the liquid cooling system is recycled, the air is heated through the S-shaped curved copper pipe to form hot air, and the electric control valve intelligently controls the hot air flow direction, the hot air is delivered to the air blowing mechanism to assist in removing the residues in the cavity in the cleaning stage, and the bottom of the debris collecting drawer is guided to prevent the debris from adhering in the non-cleaning stage, the waste cooling waste heat in the traditional process is effectively utilized, the additional energy consumption is reduced, the closed loop utilization of energy is realized, and the clean production is realized.

[0021] 3. The utility model provides a shell forming device for lighter production, through the reciprocating cleaning brush plate, the directional air blowing nozzle and the scraping plate which can scrape material with the turnover action included in the cleaning mechanism, the debris on the surface of the movable mold plate and the fixed mold plate can be completely removed, and the debris is guided to the arc collecting groove, and finally pushed into the debris collecting drawer on the both sides by the scraping plate, combined with the hot air softening treatment at the bottom, the plastic debris adhesion is effectively prevented, and the cleaning is facilitated. DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0023] Figure 2 Fig. 1 is a schematic view of the top cover profile structure of the present application;

[0024] Figure 3 Fig. 2 is a schematic view of the turnover mechanism and cleaning mechanism structure of the present application;

[0025] Figure 4 Fig. 3 is a schematic view of the movable mold plate in the closed mold state of the present application;

[0026] Figure 5 Fig. 4 is a schematic view of the reciprocating mechanism and air blowing mechanism structure of the present application;

[0027] Figure 6 Fig. 5 is a schematic view of the top of the base box of the present application;

[0028] Figure 7 Fig. 6 is a schematic view of the inner cavity of the base box of the present application;

[0029] Figure 8 Fig. 7 is a schematic view of the heat exchange mechanism structure of the present application;

[0030] Figure 9 Fig. 8 is a schematic view of the liquid cooling mechanism structure of the present application;

[0031] Figure 10 Fig. 9 is a schematic view of the drawer card slot of the present application;

[0032] Figure 11 Fig. 10 is a schematic view of the present application Figure 10 Fig. 11 is an enlarged view of position A in Fig. 10.

[0033] In the figure: 1, base box; 11, mold closing guide column; 12, top cover; 121, through hole; 13, hydraulic cylinder; 131, movable mold mounting plate; 1311, anti-collision groove; 132, movable mold plate; 14, debris collection drawer; 15, fixed mold plate; 151, shell forming cavity; 152, circular arc guide block; 153, injection tube; 154, liquid cooling mechanism; 1541, wrapped cooling tube; 1542, backflow fine tube; 1543, liquid inlet fine tube; 1544, water collecting pipe I; 1545, water collecting pipe II; 155, liquid inlet tube; 156, liquid outlet tube; 16, circular arc collection groove; 17, heat exchange mechanism; 171, heat preservation sealed box; 172, S-shaped bent copper pipe; 173, air outlet pipe; 174, air collecting pipe; 1741, air conveying hose I; 1742, air conveying hose II; 1743, electric control valve; 1744, air pipe; 17441, shunt pipe; 17442, air outlet hole; 175, water pump; 18, fan; 181, air inlet pipe; 19, drawer clamping groove; 191, air outlet groove; 1911, air outlet hole; 2, turnover mechanism; 21, hanging plate; 22, turnover gear; 23, rack; 24, limit block; 3, cleaning mechanism; 31, turnover mounting plate; 32, door-shaped turnover plate; 33, reciprocating mechanism; 331, side plate; 332, servo motor; 333, transmission gear; 334, reciprocating lead screw; 335, sliding block; 3351, support rod; 3352, cleaning brush plate; 336, limit sliding rod; 337, guide inclined plate; 34, L-shaped hanging plate; 35, scraping plate; 36, air blowing mechanism; 361, mounting cross rod; 362, air blowing nozzle; 363, air supply hose; 364, air collecting pipe. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, purposes and effects realized by the present application easy to understand, the present application is further described below in combination with specific embodiments.

[0035] Embodiment 1

[0036] As Figures 1-11As shown, a shell forming device for lighter production, comprising a base box 1, the top of the base box 1 is fixedly installed with a top cover 12 through four die guide columns 11, the center of the top cover 12 is fixedly installed with a hydraulic cylinder 13, which is connected to a hydraulic station through a high-pressure oil pipe, the hydraulic station is built-in proportional valve and displacement sensor, which can be linked with PLC controller, the output end of the hydraulic cylinder 13 is connected downward a movable die mounting plate 131, the movable die mounting plate 131 is slidingly matched with the die guide column 11, the bottom center of the movable die mounting plate 131 is installed with a movable die plate 132, on the top of the base box 1, a fixed die plate 15 is fixedly installed opposite to the movable die plate 132, a plurality of shell forming cavities 151 for forming lighter shell are arranged in rectangular array on the upper surface of the fixed die plate 15, the fixed die plate 15 is integrated with a complex liquid cooling mechanism 154 inside, which is used for rapid cooling after injection molding, a rack 23 is fixedly installed on both sides of the movable die plate 132, the rack 23 is engaged with a set of turnover gears 22 of a turnover mechanism 2, the turnover mechanism 2 mainly comprises a turnover gear 22 installed on the top cover 12 or the base box 1 through a hanger plate 21, and a limiting block 24 arranged on the side wall of the turnover gear 22 for limiting, when the movable die plate 132 is lowered to the die closing position, the rack 23 drives the turnover gear 22 to rotate by 90 degrees, at this time, one limiting block 24 abuts against the lower edge of the hanger plate 21, ensuring that the cleaning mechanism 3 stably stays in the retracted position and does not shake due to vibration, the outer wall of the turnover gear 22 is connected with the cleaning mechanism 3, the cleaning mechanism 3 comprises a turnover mounting plate 31 connected with the turnover gear 22, a door-shaped turnover plate 32 connected with the other end of the turnover mounting plate 31, an L-shaped hanger plate 34 fixedly installed at the bottom of the door-shaped turnover plate 32, and a reciprocating mechanism 33 and a blowing mechanism 36 installed on the L-shaped hanger plate 34;

[0037] When the hydraulic cylinder 13 drives the movable die plate 132 to descend and close the die, the rack 23 descends synchronously, drives the turnover gear 22 to rotate, so as to swing the cleaning mechanism 3 to the both sides of the movable die plate 132, leaving space for die injection molding, after the die is closed, injection molding is carried out through the injection pipe 153, the liquid cooling mechanism 154 is connected with cooling water to cool the product, when the die is opened, the movable die plate 132 rises, the rack 23 reversely drives the turnover gear 22, so that the cleaning mechanism 3 swings back to below the movable die plate 132 and merges;

[0038] At this time, the reciprocating mechanism 33 moves to the mold surface to clean the mold surface. Specifically, the servo motor 332 contained in the reciprocating mechanism 33 is started to drive the cleaning brush plate 3352 to clean the surface of the movable mold plate 132 and the fixed mold plate 15, and at the same time, the air blowing nozzle 362 of the air blowing mechanism 36 blows air into the shell molding cavity 151, and the collected debris is collected into the circular arc collection groove 16 at the top of the base box 1. The S-shaped bent copper pipe 172 of the heat exchange mechanism 17 is connected with the liquid outlet of the liquid cooling mechanism 154, which is used to recover the residual heat carried by the cooling water. The fan 18 blows air into the heat preservation sealed box 171 of the heat exchange mechanism 17, which is heated into hot air after flowing through the S-shaped bent copper pipe 172. The hot air is selectively delivered to the air blowing mechanism 36 for softening and blowing off the plastic residues in the cavity, or delivered to the bottom of the debris collection drawer 14 for heating and softening the collected plastic debris, preventing adhesion and facilitating cleaning.

[0039] Example 2

[0040] As shown in Figures 1-11 The working process of the turnover mechanism 2 and the cleaning mechanism 3 is divided into two states:

[0041] Clamping state: when the movable mold plate 132 descends, the rack 23 on both sides of the movable mold plate 132 descends and passes through the through hole 121 of the top cover 12. The rack 23 is engaged with the turnover gear 22 below the hanger plate 21, which drives the turnover gear 22 to rotate and drives the turnover mounting plate 31 and the door-shaped turnover plate 32 to turn to both sides of the movable mold plate 132. At this time, the L-shaped hanger plate 34 at the bottom of the door-shaped turnover plate 32 moves to both sides of the movable mold plate 132, and the scraping plate 35 enters the circular arc collection groove 16. When the movable mold plate 132 and the fixed mold plate 15 are completely clamped, the limiting block 24 on the side wall of the turnover gear 22 rotates to the vertical state and abuts against the hanger plate 21, achieving limiting. In this state, the cleaning mechanism 3 is in the retracted position and does not affect the clamping injection;

[0042] The mold is opened: when the movable mold plate 132 rises, the rack 23 drives the reversing gear 22 to rotate in reverse, causing the door-shaped reversing plate 32 and the L-shaped hanging plate 34 to flip towards the bottom of the movable mold plate 132, until the two door-shaped reversing plates 32 merge at the opposite ends, and the transmission gears 333 of the two L-shaped hanging plates 34 mesh with each other, the servo motor 332 starts to drive the reciprocating screw 334 to rotate, the sliding block 335 has a ball nut matching the reciprocating screw 334 inside, so that the sliding block 335 drives the support rod 3351 and the cleaning brush plate 3352 to move back and forth, cleaning the bottom of the movable mold plate 132 and the top of the fixed mold plate 15, and when the plastic particles fall from the upper movable mold plate 132, they can be blocked by the guide inclined plate 337 located above the reciprocating screw 334 between the opposite surfaces of the front and rear L-shaped hanging plates 34, preventing the reciprocating screw 334 from rotating normally, so that the plastic debris scraped off from the upper movable mold plate 132 falls onto the lower fixed mold plate 15. At the same time, the air blowing mechanism 36 blows air through the air nozzle 362 aimed at the shell forming cavity 151 to blow out the debris. The air nozzle 362 is a flat seam type nozzle with an outlet width of 1 mm to ensure concentrated and powerful airflow. The air supply hose 363 is made of high-temperature resistant silicone tube, and the connection between the air supply hose 363 and the air collecting pipe 364 is fastened with a stainless steel throat clamp to prevent air leakage. The debris is scraped off by the cleaning brush plate 3352 and falls into the circular arc collection groove 16. The scraping plate 35 rotates with the L-shaped hanging plate 34 to scrape the debris into the debris collection drawer 14. After cleaning, the movable mold plate 132 continues to rise to the initial position. The cleaning brush plate 3352 is made of PA66 nylon material with a melting point of 235-263°C, excellent high-temperature resistance, and can adapt to high-temperature movable mold plate 132 and fixed mold plate 15, improving the service life.

[0043] The debris that is swept off is guided by the circular arc guide blocks 152 on both sides of the fixed mold plate 15 and falls into the circular arc collection groove 16 on the base box 1. With the flipping action of the cleaning mechanism 3 before the next mold closing, the scraping plate 35 installed on the side of the L-shaped hanging plate 34 will scrape the debris in the circular arc collection groove 16 to both sides, and finally fall into the debris collection drawer 14.

[0044] Example 3

[0045] As Figures 1-11As shown, the heat exchange mechanism 17 includes a heat preservation sealed box 171 arranged inside the base box 1, an S-shaped bent copper pipe 172 is coiled in the heat preservation sealed box 171, a water pump 175 is arranged at the top of the heat preservation sealed box 171, the inlet of the S-shaped bent copper pipe 172 is connected with the outlet of the liquid cooling mechanism 154 through the water pump 175, a fan 18 is arranged at the right side of the base box 1, the output end of the fan 18 is connected with an air inlet pipe 181, the other end of the air inlet pipe 181 penetrates into the inner cavity of the heat preservation sealed box 171, heat preservation sealed boxes 171 are fixedly connected with air outlet pipes 173 on the left and right sides, the other ends of the two air outlet pipes 173 respectively penetrate into the left and right sides of the base box 1 and are fixedly connected to the air collecting pipe 174, the outer wall of the air collecting pipe 174 is fixedly connected with a gas conveying hose one 1741 and a gas conveying hose two 1742, the outer walls of the gas conveying hose one 1741 and the gas conveying hose two 1742 are both installed with an electric control valve 1743, the gas conveying hose one 1741 is connected with the air collecting pipe 364 of the cleaning mechanism 3, the gas conveying hose two 1742 is connected with an air pipe 1744 leading to the bottom of the debris collecting drawer 14, the liquid cooling mechanism 154 includes a wrapped cooling pipe 1541 arranged around each shell forming cavity 151, a plurality of wrapped cooling pipes 1541 are all connected with liquid inlet tubes 1543, the bottom of the plurality of liquid inlet tubes 1543 is connected with a water collecting pipe two 1545, the bottom of the water collecting pipe two 1545 is fixedly connected with a liquid inlet pipe 155, the other end of the liquid inlet pipe 155 is connected with the output end of the water pump 175, the outlet of the wrapped cooling pipe 1541 is communicated with a water collecting pipe one 1544 through a backflow tube 1542, one end of the water collecting pipe one 1544 is connected with a liquid outlet pipe 156, the liquid outlet pipe 156 is connected with the input end of the water pump 175, drawer clamping grooves 19 are formed on the top and left and right sides of the base box 1, the debris collecting drawer 14 is arranged in the drawer clamping groove 19 in a pullable manner, an air outlet groove 191 is formed in the inner wall of the bottom of the drawer clamping groove 19, a shunt pipe 17441 is arranged in the air outlet groove 191, a plurality of air outlet holes 17442 are formed in the shunt pipe 17441, the shunt pipe 17441 is connected with the air pipe 1744 of the heat exchange mechanism 17, a plurality of air outlet holes 1911 are formed in the left and right sides of the base box 1 and penetrate into the inner cavities of the two air outlet grooves 191, for discharging hot air;

[0046] When the injection molded product is cooled, the cooling water enters the liquid cooling mechanism 154 inside the fixed mold plate 15 through the liquid inlet pipe 155, the cooling water flows into the wrapped cooling pipe 1541 wrapped around the outer wall of each shell forming cavity 151 through the water collecting pipe two 1545 and the liquid inlet tube 1543, becomes hot water after absorbing the heat of the plastic product, and then is collected to the water collecting pipe one 1544 through the backflow tube 1542, and finally is discharged through the liquid outlet pipe 156, the traditional method is to directly cool or discharge this part of hot water, causing energy waste;

[0047] Further, the hot water discharged by the liquid outlet pipe 156 is pumped into the S-shaped curved copper pipe 172 of the heat exchange mechanism 17 by the water pump 175. Due to the excellent heat conductivity of the copper pipe, the heat of the hot water is efficiently transferred to the closed space of the heat preservation sealed box 171. At this time, the fan 18 is started to blow the ambient air into the heat preservation sealed box 171 through the air inlet pipe 181. The air is heated when flowing through the surface of the S-shaped curved copper pipe 172, forming medium-low temperature hot air. These hot air is transported to the air collecting pipe 174 through the air outlet pipe 173. The air collecting pipe 174 is connected with two pipelines: the air supply hose one 1741 and the air supply hose two 1742, and the on-off of which is controlled by the electric control valve 1743 respectively. The electric control valve 1743 can realize intelligent switching through the PLC control system linked with the hydraulic cylinder 13 at the top of the top cover 12.

[0048] During the mold opening cleaning stage, the electric control valve 1743 on the air supply hose one 1741 is opened, and the electric control valve 1743 on the air supply hose two 1742 is closed. The hot air is transported to the air blowing nozzle 362 of the air blowing mechanism 36 through the air collecting pipe 364 and the air supply hose 363, and blows to the shell forming cavity 151. This can effectively soften the possibly adhered plastic residues, and improves the air blowing cleaning effect.

[0049] During the mold closing production stage or after the cleaning is completed, the air supply hose one 1741 is closed, and the air supply hose two 1742 is opened. The hot air enters the shunt pipe 17441 at the bottom of the drawer card slot 19 through the air pipe 1744, and blows upward from the air outlet hole 17442 to the metal bottom plate of the debris collecting drawer 14, continuously heating and softening the plastic debris in the drawer. This can effectively prevent the debris from adhering to the inner wall of the drawer due to cooling, and facilitates the subsequent cleaning work.

[0050] The heat exchange mechanism 17 recycles the waste heat of injection cooling into useful cleaning energy, realizes the closed loop utilization of energy, improves the cleaning efficiency, and reduces the overall energy consumption.

[0051] The working principle of the shell forming device for lighter production will be described in detail below.

[0052] As Figures 1-11As shown, the top cover 12 is supported above the base box 1 by the mold clamping guide column 11, the hydraulic cylinder 13 drives the movable mold mounting plate 131 to drive the movable mold plate 132 to descend, and the mold is clamped with the fixed mold plate 15 to perform injection molding. When the mold is clamped, the rack 23 on both sides of the movable mold plate 132 descends, drives the turnover gear 22 to rotate, and makes the cleaning mechanism 3 turn over to the both sides to leave space for clamping. After injection molding, the liquid cooling mechanism 154 passes in cooling water to cool the product. When the mold is opened, the movable mold plate 132 rises, the rack 23 drives the turnover gear 22 in the reverse direction, and the cleaning mechanism 3 is swung back to the below of the movable mold plate 132 to merge. At this time, the servo motor 332 of the reciprocating mechanism 33 is started to drive the reciprocating screw 334 to drive the cleaning brush plate 3352 to clean the bottom of the movable mold plate 132 and the top of the fixed mold plate 15. At the same time, the air blowing mechanism 36 blows hot air into each shell forming cavity 151 through the air blowing nozzle 362, softens and removes the residual debris, and the swept debris is scraped to the circular arc collecting groove 16 in front of and behind the fixed mold plate 15 by the cleaning brush plate 3352. During the cleaning process, the heat exchange mechanism 17 heats the air sent by the fan 18 through the S-shaped curved copper pipe 172 by the waste heat of the cooling water discharged by the liquid cooling mechanism 154, generates hot air, and is controlled by the electric control valve 1743 to flow: in the mold opening and cleaning stage, the hot air is sent to the air blowing mechanism 36 through the air conveying hose 1741 to assist cleaning; when the mold is clamped for production, the hot air is guided to the bottom of the debris collecting drawer 14 through the air conveying hose 1742 and the air pipe 1744 to heat and soften the plastic debris therein, prevent adhesion, and sweep the debris in the circular arc collecting groove 16 into the debris collecting drawer 14 by the scraping plate 35 when the cleaning mechanism 3 is turned over, and realize automatic collection.

[0053] The basic principles and main features of the present application are shown and described above, and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A housing forming device for lighter production, comprising a base box (1), the top of the base box (1) is provided with a plurality of mold closing guide columns (11), the top of the plurality of mold closing guide columns (11) is provided with a top cover (12), the top cover (12) is provided with a hydraulic cylinder (13), the output end of the hydraulic cylinder (13) is connected with a movable mold mounting plate (131), the bottom of the movable mold mounting plate (131) is provided with a movable mold plate (132), the top of the base box (1) is provided with a fixed mold plate (15) for mold closing with the movable mold plate (132), a plurality of housing forming cavities (151) are formed in the fixed mold plate (15), characterized in that: The lower sides of the top cover (12) are provided with turnover mechanisms (2), the turnover mechanism (2) comprises a rack (23) and a turnover gear (22), the rack (23) is arranged on the left and right sides of the movable mold plate (132), the rack (23) is engaged with the turnover gear (22) of the turnover mechanism (2), one side of the turnover gear (22) is connected with a cleaning mechanism (3) capable of rotating, the inner cavity of the base box (1) is provided with a heat exchange mechanism (17), the inside of the fixed mold plate (15) is integrated with a liquid cooling mechanism (154), the input end of the heat exchange mechanism (17) is connected with the output end of the liquid cooling mechanism (154), the cleaning mechanism (3) comprises a gas blowing mechanism (36), the two sides of the base box (1) are provided with a debris collection drawer (14), the hot air output end of the heat exchange mechanism (17) is selectively connected to the gas blowing mechanism (36) of the cleaning mechanism (3) or to the bottom of the debris collection drawer (14).

2. The case molding apparatus for a lighter production according to claim 1, wherein: The turnover mechanism (2) comprises a hanging plate (21) fixed to the bottom of the top cover (12), the bottom end of the hanging plate (21) is rotationally connected with the turnover gear (22) through a rotating shaft, the side wall of the turnover gear (22) is provided with two limiting blocks (24), and the two limiting blocks (24) limit the maximum rotating angle of the turnover gear (22) to 90 degrees.

3. The case molding apparatus for a lighter production according to claim 2, wherein: The cleaning mechanism (3) comprises a turnover mounting plate (31) fixedly connected with the side wall of the turnover gear (22), one end of the turnover mounting plate (31) is connected with a door-shaped turnover plate (32), the bottom of the door-shaped turnover plate (32) is fixedly provided with L-shaped hanging plates (34) on the front and rear sides, and a reciprocating mechanism (33) is arranged between the opposite faces of the horizontal portions of the front and rear L-shaped hanging plates (34).

4. The case molding apparatus for a lighter production according to claim 3, wherein: The left and right reciprocating mechanisms (33) each comprise a side plate (331) fixed to the outer wall of the front and rear L-shaped hanging plates (34), one of the reciprocating mechanisms (33) comprises a servo motor (332) mounted on the outer wall side plate (331) of the L-shaped hanging plate (34), the rear sides of the left and right reciprocating mechanisms (33) are movably provided with transmission gears (333), the servo motor (332) is connected with one of the transmission gears (333), reciprocating lead screws (334) are fixedly installed at the rear sides of the two transmission gears (333), the rear end of the reciprocating lead screw (334) is rotationally connected with the side plate (331) on the rear side, a sliding block (335) is transmissionally connected to the reciprocating lead screw (334), support rods (3351) are arranged on the upper and lower sides of the sliding block (335), and cleaning brush plates (3352) for cleaning the bottom of the movable mold plate (132) and the top of the fixed mold plate (15) are arranged at the ends of the two support rods (3351).

5. The case molding apparatus for a lighter production according to claim 3, wherein: The air blowing mechanism (36) comprises a mounting horizontal rod (361) fixed between the opposite surfaces of the two L-shaped hanging plates (34), a plurality of air blowing nozzles (362) are arranged on the mounting horizontal rod (361), the plurality of air blowing nozzles (362) are located above the plurality of shell forming cavities (151) after the two cleaning mechanisms (3) are combined, the plurality of air blowing nozzles (362) are connected with air supply hoses (363), the other ends of the plurality of air supply hoses (363) are connected with a gas collecting pipe (364), and the gas collecting pipe (364) is connected with the hot air output end of the heat exchange mechanism (17).

6. The case molding apparatus for a lighter production according to claim 1, wherein: The heat exchange mechanism (17) comprises a heat preservation sealed box (171) arranged in the base box (1), an S-shaped bent copper pipe (172) is coiled in the heat preservation sealed box (171), a water pump (175) is arranged at the top of the heat preservation sealed box (171), the inlet of the S-shaped bent copper pipe (172) is connected with the outlet of the liquid cooling mechanism (154) through the water pump (175), a fan (18) is arranged on the right side of the base box (1), the output end of the fan (18) is connected with an air inlet pipe (181), the other end of the air inlet pipe (181) penetrates into the inner cavity of the heat preservation sealed box (171), air outlet pipes (173) are fixedly connected to the left and right sides of the heat preservation sealed box (171), and the other ends of the two air outlet pipes (173) penetrate into the left and right sides of the base box (1) and are fixedly connected to the air collecting pipe (174).

7. A case molding apparatus for a lighter production according to claim 6, wherein: The outer wall of the air collecting pipe (174) is fixedly connected with a gas conveying hose one (1741) and a gas conveying hose two (1742), the outer walls of the gas conveying hose one (1741) and the gas conveying hose two (1742) are both installed with electric control valves (1743), the gas conveying hose one (1741) is connected with the gas collecting pipe (364) of the cleaning mechanism (3), and the gas conveying hose two (1742) is connected with an air pipe (1744) leading to the bottom of the debris collecting drawer (14).

8. The case molding apparatus for a lighter production according to claim 6, wherein: The liquid cooling mechanism (154) comprises a wrapped cooling pipe (1541) arranged around each shell forming cavity (151), a plurality of wrapped cooling pipes (1541) are all connected with liquid inlet thin pipes (1543) in penetration, the bottoms of the plurality of liquid inlet thin pipes (1543) are connected with a water collecting pipe two (1545) in penetration, the bottom of the water collecting pipe two (1545) is fixedly connected with a liquid inlet pipe (155) in penetration, the other end of the liquid inlet pipe (155) is connected with the output end of the water pump (175), the outlet of the wrapped cooling pipe (1541) is communicated with a water collecting pipe one (1544) through a backflow thin pipe (1542), one end of the water collecting pipe one (1544) is connected with a liquid outlet pipe (156), and the liquid outlet pipe (156) is connected with the input end of the water pump (175).

9. The case molding apparatus for a lighter production according to claim 1, wherein: Both sides of the fixed mold plate (15) are provided with arc guide blocks (152), the top of the base box (1) is provided with arc collecting grooves (16) on the front and back sides, the arc collecting grooves (16) are located on the front and back sides of the fixed mold plate (15) and the arc guide blocks (152) to collect and clean the debris, the L-shaped hanging plate (34) of the cleaning mechanism (3) is provided with a scraping plate (35) on the side surface, the bottom of the scraping plate (35) is matched with the inner wall contour of the arc collecting groove (16) when rotating, and the debris is scraped into the debris collecting drawer (14).

10. The case molding apparatus for a lighter production according to claim 1, wherein: The top of the base box (1) is provided with drawer clamping grooves (19) on the left and right sides, the debris collecting drawer (14) is provided in the drawer clamping groove (19) in a pullable manner, the inner wall bottom of the drawer clamping groove (19) is provided with an air outlet groove (191), the air outlet groove (191) is provided with a shunt pipe (17441), a plurality of air outlet holes (17442) are formed in the shunt pipe (17441), the shunt pipe (17441) is connected with the air pipe (1744) of the heat exchange mechanism (17), and the left and right sides of the base box (1) are respectively provided with a plurality of air outlet holes (1911) penetrating to the inner cavities of the two air outlet grooves (191) to discharge hot air.

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